777results about How to "Prevent affecting operation" patented technology

The invention relates to a hydrogenation method for a coal tar suspension bed of a heterogeneous catalyst. The method comprises processes of coal tar raw material pretreatment and distillatory separation, coal tar heavy fraction suspension bed hydrogenation cracking and conventional light fraction oil extraction, wherein the suspension bed hydrogenation reaction temperature is between 320 and 480DEG C, the reaction pressure is 8 to 19MPa, the volume air speed is 0.3 to 3.0h<-1>, the hydrogen oil volume ratio is 500 to 2,000, the catalyst is a powdery granular coal tar suspension bed hydrogenation catalyst of a single metal active ingredient containing molybdenum, nickel, cobalt, tungsten or iron or a composite multi-metal active ingredient, the adding amount of the catalyst is based on the ratio of the metal quantity of the active ingredient to the weight of the coal tar raw materials of 0.1: 100-4: 100, most of tail oil containing the catalyst after lightweight oil is separated froma hydrogenation reaction product is directly circulated to a hydrogenation bed reactor, a small part of tail oil is subjected to catalyst removal treatment and then circulated to the hydrogenation bed reactor to be subjected to further lightweight treatment, and the heavy oil is totally or furthest circulated. The method fulfills the purposes of maximum production of the lightweight oil in the coal tar and cyclic utilization of the catalyst, and greatly improves the utilization efficiency of the raw materials and the catalyst.

The invention relates to a compound coal tar hydrogenation catalyst and a preparation method thereof. The catalyst comprises a high-activity component of water-soluble salts of molybdenum, nickel, cobalt or tungsten and comprises a low-activity component of iron oxide ore or iron sulfide ore, wherein the mass ratio of the metals in the high-activity component to the metals in the low-activity component is 1:1,000 to 1:10; iron accounts for more than or equal to 40 weight percent of the ore; and water accounts for less than 2 weight percent of the catalyst. The catalyst is used for the coal tar hydrocracking technical process in a suspension bed, has higher hydrogenation activity and the lightweight oil yield of over 94 percent, and can be recycled; the preparation and use cost of the catalyst can be greatly reduced, the consumption of the catalyst is reduced in the process, the coke deposition of the reaction system is avoided simultaneously and the operation cycle is prolonged.

The invention relates to a distribution-automation distributed type FA (feeder automation) linkage test method. The method comprises the following steps of enabling a main station to send configuration parameters of a relay protection tester, and enabling the relay protection tester to send voltage and current signals to a distributed type FA terminal to be collected; starting to test, and enabling the distributed type FA terminal to judge the faults after the load change of the abnormal current is detected, and report a telemetering and telesignaling value to the main station; after the main station receives the abnormal telemetering and telesignaling value, controlling the relay protection tester to send a remote control signal to a switch simulation device which is used for simulating a switch on a column; and after the switch simulation device acts according to the received remote control signal, feeding the processed information back to the main station by the distributed FA terminal. The invention also discloses a distribution-automation distributed type FA linkage test system. The method and the system have the advantage that the power off of a line is not required, the fault simulation signal is directly provided for the FA equipment, the influence on the safe and normal running of primary equipment in the debugging process of the distribution-automation system is avoided, and the test process is more concise and quicker.

The invention discloses a multi-air-channel constant-humidity fresh air ventilator with joint control over temperature and CO2 and a working method thereof. The fresh air ventilator is provided with a fresh air port, an air return port, an air supply port and an air outlet, wherein double-layer air channels, a total heat exchanger, an air treatment module, an exhaust treatment module and a fan are arranged in the fresh air ventilator. According to the outdoor gas phase condition and the indoor air data measured by a temperature sensor and a CO2 concentration sensor, the fresh air ventilator has five working modes, namely a full fresh air mode in winter, a full fresh air mode in summer, a return air internal circulation mode in summer, a natural ventilation mode and a standby mode during full-year running time. According to the fresh air ventilator, the design of an upper air channel and a lower air channel is adopted, the fresh air entering the room and the return air are subjected to full heat exchange on the upper air channel just in the fresh air mode in summer and in the fresh air mode in winter, heat recovery is not needed in the other modes, and therefore the lower air channel bypasses the total heat exchanger, the system resistance is reduced, and the energy consumption of the fan is reduced.

The invention discloses a substation area differential protection method for an intelligent substation, which comprises a big differential protection mode taking the substation as the principal thing, and more than two small differential protection modes taking the substations as the principal things; the big differential protection mode serves as a starting element, any one small differential protection mode serves as an action element; when the two conditions are satisfied simultaneously, the differential protection outputs action; the small differential protection modes are still failure selecting elements; the range of the big differential protection mode is delimitated by high voltage side current of each transformer and all outlet current on the medium voltage side generating line and the low voltage side generating line, of the substation, (not comprising buscouple and segment); the ranges of the small differential protection modes are delimitated by corresponding high voltage side current of the transformer, and all corresponding outlet current on the generating lines connected with main change medium voltage side and low voltage side, (not comprising buscouple and segment). The method not only can thoroughly protect the substation, but also can close the failure transformer in a targeted manner, is small in influence range for the electricity using user, and is particularly suitable for the substation provided with two or more than two transformers to use.

The invention relates to a storage-type super-low nitric oxide system in a coal fired boiler coal mill. On the basis of the existing low-nitrogen burning technology, the superfine coal powder preparation technology and the smoke circulating technology are adopted. The smoke circulating technology adopts cold furnace smoke to be mixed with primary air to be supercharged by a primary fan, the heating and powder feeding technology of an air preheater and the hot air and high-temperature furnace smoke drying technology of the powder production system are adopted, i.e. superfine coal powder can be prepared, the hot furnace smoke enters a primary air large air bellow, the hot furnace smoke is mixed with superfine coal powder prepared by a superfine coal powder preparation device in a coal powder blender and supplied by a powder supply machine from a coal powder cabin to be heated, and the air-powder mixture is fed into a low-nitrogen burner through a primary air pipe. In the main burning area of the boiler, since the air content of the furnace smoke is little, a lower residual air coefficient can be realized, the emission of the nitric oxide can be reduced.

The invention discloses a method and a system for centrally checking weak passwords of equipment, and relates to the technical field of computer network information security and network management. The method comprises the following steps: when weak password check needs to be performed on the equipment, acquiring a password file of each piece of to-be-checked equipment by receiving the to-be-checked equipment and to-be-checked items, and uploading the password files onto a centralized control server; splitting the received password files into a plurality of cracking tasks through the centralized control server, and allocating the cracking tasks onto a plurality of cracking analysis servers according to the principle of load balance; automatically matching corresponding weak password dictionaries according to the to-be-checked items through the cracking analysis servers, and finishing weak password check according to corresponding levels; and uploading check results onto the centralized control server through each cracking analysis server in order to perform summarization analysis. Through adoption of the method and the system, the weak passwords of all equipment can be checked comprehensively and accurately; centralized weak password dictionary management is realized; and a whole-network weak password standard is unified.

The invention discloses a wide-power water electrolysis hydrogen production system and method. The system comprises a rectifier transformer and an electrolytic bath, the rectifier transformer convertsAC into DC and then introduces DC into the electrolytic bath; the system further comprises a gas-liquid separator, a gas cooler and a gas drop catcher; the rectifier transformer is connected with a fluctuating power supply; the gas-liquid separator comprises a hydrogen separator and an oxygen separator; the gas cooler comprises a hydrogen cooler and an oxygen cooler; the gas drop catcher comprises a hydrogen drop catcher and an oxygen drop catcher; the cathode electrolyte outlet of the electrolytic bath is communicated with the hydrogen separator of the gas-liquid separator, and the anode electrolyte outlet of the electrolytic bath is communicated with the oxygen separator of the gas-liquid separator. The problems that a conventional water electrolysis hydrogen production system is limited in power adjustable range, and the response capacity of the system such as pressure adjustment, and the like, in the wide power fluctuation period is insufficient are solved.

The invention discloses a system for recycling the raw gas afterheat of a coke oven, and belongs to the technical field of the recycling utilization of raw gas afterheat. The system for recycling the raw gas afterheat of the coke oven comprises a heat exchange medium circulating system and a water charging system, wherein the heat exchange medium circulating system comprises a heat exchanger set, a steam pocket and a forced circulation pump, a water inlet of the heat exchanger set is connected to a water outlet of the steam pocket through the forced circulation pump, a water outlet of the heat exchanger set is connected to a water inlet of the steam pocket, and a steam outlet in the steam pocket is connected to an external steam pipe network; the water charging system comprises a buffer water tank, a make-up pump, a feed pump and a desalting oxygen removal water tank, the feed pump is arranged between the buffer water tank and the desalting oxygen removal water tank, and the buffer water tank is connected to the steam pocket through the make-up pump. The system can be used for effectively, safely and reliably recycling the raw gas afterheat and circularly converting a heat exchange medium into middle and low pressure steam; the system operation can be effectively detected and controlled, so that the safe and normal operation of the system is ensured, and the accident rate is reduced.

The invention relates to a catalytic hydrogenation method and a catalytic hydrogenation apparatus for coal tar. The catalytic hydrogenation method comprises the following steps of performing atmospheric distillation on raw materials of the coal tar to obtain at least a carbolic oil fraction, a diesel fraction and a heavy oil fraction; performing slurry-bed hydrocracking on the heavy oil fraction to obtain a slurry-bed hydrocracking product; separating the slurry-bed hydrocracking product to obtain a liquid phase and solid phase mixed flow of high pressure separated oil and low pressure separated oil and a hydrogen-rich gas; filtering a part of the liquid phase and solid phase mixed flow of the high pressure separated oil and the low pressure separated oil to obtain a catalyst residue and a filter solution; performing atmospheric distillation separation on the filter solution and the residual liquid phase and solid phase mixed flow of the high pressure separated oil and the low pressure separated oil to obtain a light fraction and a catalyst-containing tail oil at the bottom of a tower; and recycling the catalyst-containing tail oil at the bottom of the tower to the slurry-bed hydrocracking reaction for reprocess. The method decreases the difficulty of catalyst residue separation and reduces the content of organic materials in the catalyst residue, so that the utilization rate of the raw materials and the efficiency of the catalyst can be increased.

The invention provides a method and system for remotely updating a terminal equipment program. The method comprises the following steps: acquiring a version to be updated of terminal equipment from a data server through a communication server; feeding current version information by the terminal equipment and generating confirmation version information; finally confirming an upgraded program version according to the information; transmitting data of the program version to the terminal equipment; receiving and flashing the program through the terminal equipment; and finishing a process of remotely updating the terminal equipment program. Through the scheme, wireless remote connection of the terminal equipment is realized, and the upgraded program version is finally confirmed by means of judgment through the current version information fed back by the terminal equipment, the version information to be upgraded configured in the terminal server, and the confirmation information of the version information to be upgraded by the terminal equipment, so that the problems of version confusion and program update errors or failures caused by program update of the terminal equipment in the prior art are solved effectively. Through the method for remotely updating the terminal equipment program provided in the scheme, version confusion is prevented and correct update of the program is ensured through a way of generating multiple pieces of confirmation information and making a judgment.

The invention discloses a durable power distribution automatic cabinet, which comprises a cabinet body, wherein the bottom of the cabinet body is provided with a supporting plate; the middle of the upper surface of the supporting plate is provided with a placement groove adaptive to the cabinet body; the bottom end of the cabinet body is arranged in the placement groove; the bottom of the supporting plate is fixedly provided with supporting rods which are evenly distributed; the bottom of the supporting rod is fixedly provided with an embedding plate; the bottom of the embedding plate is fixedly provided with spacing columns which are in annular array distribution; and a division plate is fixedly installed in the cabinet body and independently segments the inner cavity of the cabinet body into a first wiring chamber and a second wiring chamber. One side of the cabinet body is provided with a regulation box, so that temperature in the cabinet body can be lowered when the durable power distribution automatic cabinet is used, heat generated in the working process of an electric appliance component in the cabinet body is emitted, and a situation that the operation of equipment is affected since the heat is accumulated in the cabinet body is avoided so as to be favorable for prolonging the service life of the equipment.

The invention discloses a low-voltage big user integrated protection control method for a power distribution network, comprising establishing a power distribution network area autonomous management system that includes a low-voltage large user intelligent terminal, a public transformer intelligent base station and an area intelligent control center which are in mutual communication connection by an integrated communication network; dynamically configuring a low-voltage load rated capacity according to change of power distribution network load; timely monitoring load groups of a public transformer area and collecting data of the same, when the electrical load of the public transformer area exceeds the rate capacity, controlling the low-voltage large user intelligent terminal to perform overloaded regulation and control on the power distribution network in a plurality of gradient manners, and dynamically recording the maximum load data of the power distribution network. Through the integrated communication network, transmitting the maximum load data to the public transformer intelligent base station by the low-voltage large user intelligent terminal to analyze and forecast the load groups, transmitting the analyzed data to the area intelligent control center by the public transformer intelligent base station, and thereby achieving power quality and line loss background analysis, and overall regulation and control on the power distribution network.

The invention discloses an automatic plugging-in device of a connector pin. The automatic plugging-in device comprises a machine frame, an emptying device, a plugging device, a plurality of terminal conveying devices, a feeding device, a discharging device, a CCD photographing device and a terminal supporting device, wherein the emptying device is fixed to the machine frame, the plugging device is connected with the emptying device in a butted mode, the multiple terminal conveying devices are arranged in front of the plugging device, the feeding device and the discharging device are arranged at the two ends of the terminal conveying devices, the CCD photographing device is arranged on the side of the plugging device, and the terminal supporting device is used for fixing mobile terminals. On the one hand, automatic conveying of other stations can be achieved; on the other hand, the automatic plugging-in device can be connected with a plurality of automatic plugging-in devices in a butted mode, so that the production efficiency is improved exponentially; the feeding device and the discharging device are arranged at the two ends of the terminal conveying devices, so that automatic feeding and discharging are achieved; due to the fact that the CCD photographing device is arranged for photographing, position coordinates of each jack in the terminals are obtained, and precise coordinates are provided for follow-up plugging-in of pins.

The invention discloses a method for locking a screw automatically. The method for locking the screw automatically comprises the following steps that a to-be-assemble product is assembled to an installation position, and a CCD visual detector scans the shape of the to-be-assemble product and uploads scanned data to a control device; the control device calculates the coordinates of a screw hole of the to-be-assemble product according to the received shape data of the to-be-assemble product; the control device controls a electric screwdriver to act and drives a screw clamping device to move, and thus the screw clamping device is located over the screw hole in the corresponding position; the screw clamping device clamps the screw supplied by a screw feed device; and the control device controls an air cylinder to push the electric screwdriver and the screw clamping device to move downwards, thus the screw is inserted into the screw hole in the corresponding position, the electric screwdriver is started, the screw is screwed into the screw hole, and product assembly is completed. The provided method for locking the screw automatically is high in work efficiency and high in product assembly yield.

The invention relates to a treatment device and method for simultaneously removing high-concentration SS, fluoride, sulfate, arsenate and COD in desulfurization waste water. The treatment device is characterized in that an overflowing port of a settling pond is connected with a first delivery pump through a pipeline, a first-level defecator stirring device is installed on a first-level defecator, and a second delivery pump is connected with a third reaction tank through a pipeline. The treatment method includes the steps that the desulfurization waste water enters the settling pond for primary settling, and then outlet water sequentially enters a first reaction tank and a second reaction tank to be subjected to a chemical-coagulating sedimentation reaction and then enters the first-level defecator for solid-liquid separation; supernate is introduced into the third reaction tank, mixed liquid after the reaction sequentially enters a flocculation tank to be subjected to a flocculation reaction and a second-level defecator to be defecated and concentrated; the supernate is introduced into a filtering device to be filtered, and the pH value of output water is adjusted to be 6-9. The high-concentration SS, fluoride, sulfate, arsenate and COD in the desulfurization waste water are effectively and simultaneously removed.

The invention provides a self-power-generation cooling type host case. The self-power-generation cooling type host case comprises a case body, a heat absorption disk, a miniature direct-current water pump, a heat dissipation disk, a temperature difference power generation piece and a miniature cooling box, wherein the case body is of a closed structure, circular flow of heat dissipation liquid in a pipe of the heat absorption disk and circular flow of heat dissipation liquid in a pipe of the heat dissipation disk are achieved through the miniature direct-current water pump, the miniature cooling box is fixed to the cold surface of the temperature difference power generation piece in an attachment mode, the hot surface of the temperature difference power generation piece is assembled on a heating component in the case body, the miniature cooling box is connected to a circulation pipeline arranged between the heat absorption disk and the heat dissipation disk through a hose, and the miniature direct-current water pump is connected with the temperature difference power generation piece through an electric wire. The heat dissipation liquid absorbs heat through the heat absorption disk, then, the heat is discharged out through the heat dissipation disk, the heat dissipation capacity of the self-power-generation cooling type host case changes along with changes of heating power in the case body, and when the amount of generated heat is larger, the heat dissipation speed is higher.

The invention discloses an inland river dual fuel power-driven vessel security control system, and the system comprises a main control cabinet, a separate display control panel, six combustible gas detectors, an audible-visual alarm, a general alarm system and a secondary security system. When any one of the six combustible gas detectors detects that the combustible gas concentration is higher than 30% LEL, a PLC controller separately transmits an instruction to a master-control panel, the separate display control panel and the audible-visual alarm, the master-control panel and the separate display control panel display a combustible gas danger signal and a danger source place, and a light alarm transmits an alarm signal; if no staff removes the danger and resets at that time, a vessel general alarm system is triggered after the time delay; when any one of the six combustible gas detectors detects that the combustible gas concentration sequentially increases and is higher than 45% LEL, the audible-visual alarm and the secondary security system are triggered at the same time, an air tank air supply main valve is cut, then the dual fuel mode of the dual fuel supply converts to a diesel oil mode.

The invention relates to hydro-electric power generating equipment with an impurity removing function. The hydro-electric power generating equipment comprises a water turbine, a filter screen and a cleaning device. The cleaning device comprises a collecting bucket, a steering mechanism, a horizontal moving mechanism, a lifting mechanism and a clamping mechanism, wherein the steering mechanism, the horizontal moving mechanism, the lifting mechanism and the clamping mechanism are located on one side of the collecting bucket. The steering mechanism comprises a first motor, a driving wheel, a belt, a driven wheel, a rotary shaft and a turnplate. The horizontal moving mechanism comprises an air cylinder and a sliding plate. The lifting mechanism comprises fixed blocks, sliding blocks, a telescopic frame, hinged blocks, a lifting plate and a driving assembly. The clamping mechanism comprises a second motor, a lead screw, a sliding rod, a sliding block and a clamping rod. According to the hydro-electric power generating equipment with the impurity removing function, impurities in water are blocked through the filter screen at a water inlet and then are removed from the filter screen through the cleaning device, the effect that the water smoothly flows into the water turbine is guaranteed, and meanwhile, the situation that the impurities enter the water turbine, normal operation of a rotary wheel in the water turbine is affected, accordingly, normal power generation of the water turbine is affected, and the water turbine is damaged is avoided.

The invention discloses a high-low-voltage switch cabinet with an automatic protection function. The high-low-voltage switch cabinet comprises a cabinet body and a machine seat, wherein connecting blocks are fixedly connected onto the bottoms of the left and right sides of the cabinet body; support rods are fixedly connected onto the inner walls of the two sides of the machine seat through fixingblocks; the connecting blocks are inserted and connected onto the support rods; a first strong power spring and a second spring power spring are connected onto each support rod in a sleeving way; thetop end of the first strong power spring is fixedly connected onto the top end of the support rod; and the bottom end of the first strong power spring is fixedly connected with the upper surface of the connecting block. Through the arrangement and the mutual matching of the cabinet body, a fan, a ventilation pipe, a multi-way pipe, an air suction head and a temperature sensor, the problem that theexisting high-low-voltage switch cabinet cannot timely and effectively discharge heat is solved; and through the arrangement and the mutual matching of a dry powder fire-fighting box, a conveying pipe, a spray head, an electric control valve and a smoke sensor, the problem that the existing high-low-voltage switch cabinet cannot perform fire hazard control on inside electric appliance elements issolved.

The invention discloses an electricity utilization protection method based on comprehensive integration of public transformers. The method comprises the following steps: a voltage transformer and a current transformer are connected in parallel to a low-voltage wire outlet end of a public transformer to acquire voltage and current information of the low-voltage wire outlet end of the public transformer in real time and obtain real-time voltage and current data; data operation processing is performed on the real-time voltage and current data to obtain the real-time relevant electric quantity value of a power supply line; the relevant electric quantity value is compared with a corresponding preset electric quantity value to judge whether the relevant electric quantity value meets the conditions of electricity utilization protection; and when the relevant electric quantity value meets the conditions of electricity utilization protection, electricity utilization protection is executed, wherein electricity utilization protection includes short-circuit protection, zero-sequence over-current protection, overvoltage protection, under-voltage protection, zero line breaking protection, phase lack protection, single-phase high-impedance grounding protection and / or three-phase power balance protection. The invention further discloses an electricity utilization protection device. By adopting the electricity utilization protection method and the electricity utilization protection device of the invention, power supply lines can be comprehensively and effectively protected, and the safety and reliability of electricity utilization can be improved.

The invention relates to a mold-melting shell maker, and belongs to the field of shell maker equipment. The mold-melting shell maker comprises a base (1), a rotary workbench (6) arranged on the base (1) rotationally, a linear lifting mechanism arranged above the rotary workbench (6) vertically and a horizontal connecting arm. The inner end of the horizontal connecting arm is fitted on the linear lifting mechanism, and the horizontal connecting arm can slide along the linear lifting mechanism vertically; the outer end of the connecting arm is fixed with a vertical rotary lifting mechanism, the lower end of the rotary lifting mechanism is fixedly connected to a breaker (26) through a universal joint (28), the upper portion of the breaker (26) is provided with a breaker bearing seat (27) provided with a bearing inside, the corresponding distance between the breaker bearing seat (27) and the rotary lifting mechanism is fixed through a pull rod (43), and the lower end of the pull rod (43) is hinged with the breaker bearing seat (27). The mold-melting shell maker has the advantages that slurry sticking and sand sticking can be performed automatically, operating efficiency is improved, the thickness of a wax mold shell is uniform, and quality is stable.

The invention discloses a fitness training guide system on the basis of somatic games. The fitness training guide system is characterized by comprising a remote guide service platform, a fitness guide client, somatic game equipment, audio and video signal control switching equipment and display equipment. The fitness guide client is used for acquiring health information and fitness requirements of users; the remote guide service platform is used for providing somatic game fitness guide schemes for the users; the somatic game equipment is used for outputting somatic game projects; the audio and video signal control switching equipment is used for actively switching the fitness training guide schemes and somatic game operation display interfaces and outputting the fitness training guide schemes and the somatic game operation display interfaces to the display equipment. The fitness training guide system has the advantages that the fitness training guide system can access third-party somatic game equipment, the somatic games are combined with fitness guide, and accordingly the personalized fitness requirements can be met.

The invention discloses an application program on-line upgrading method. The application program on-line upgrading method comprises the steps of obtaining a target application program and an electrifying guide program; storing the target application program and the electrifying guide program to different storage spaces of which erasing is independent respectively; in the embedded system running process, when an application program upgrading instruction is received, accessing the target application program through the electrifying guide program and programming a program code of the target application program to a set address inside an embedded system. By means of the application program on-line upgrading method, the target application program and the electrifying guide program are stored tothe different storage spaces of which erasing is independent respectively, so that the target application program and the electrifying guide program do not interfere each other, the application program can be simply and effectively upgraded on line, the work efficiency is improved, manpower cost is saved, and the influence on normal running of the embedded system is prevented. The invention further discloses an application program on-line upgrading device and equipment and a storage medium. The application program on-line upgrading device and equipment and the storage medium also have the corresponding advantages.

The invention discloses an intelligent constant-temperature dehumidification device. The device comprises a machine body. A supporting plate is fixedly installed inside the machine body. A water collection box is fixedly installed at the bottom of the supporting plate. A constant-temperature chamber is fixedly connected with the bottom of the water collection chamber. An exhaust fan, a first dehumidification mechanism and a second dehumidification mechanism are arranged on the top of the supporting plate from right to left in sequence. The first dehumidification mechanism is composed of a dehumidification box, adsorption sponge, a dehumidification cover, an electric telescopic rod and a push plate. The second dehumidification mechanism is composed of a dehumidification barrel, a barrel cover, desiccant and an air outlet pipe. A drainage pipe communicates with the bottom end of the dehumidification box fixedly. According to the intelligent constant-temperature dehumidification device, air in a station is sucked into the dehumidification barrel through the exhaust fan, moisture in the air is adsorbed by the adsorption sponge preliminary, and then enters the dehumidification barrel after being adsorbed by the adsorption sponge, the air is fed into the desiccant so that more moisture can be adsorbed by the desiccant, then the moisture in the air is removed, and the influence causedby moisture to the equipment in the station is reduced.

The invention discloses a chemical raw material stirring device. The device comprises a raw material tank, A feed inlet is formed in the upper portion of the raw material tank, a discharge opening is formed in the lower portion of the raw material tank, a stirring shaft is arranged in the raw material tank, the stirring shaft is connected with a speed reducer on the top of the outer side of the raw material tank, the speed reducer is connected with a driving motor, a screen plate dividing the raw material into an upper cavity and a lower cavity is arranged in the raw material tank, a plurality of through holes are formed in the screen plate, a smashing and rolling bar is arranged on the portion, located above the screen plate and close to the screen plate, on the stirring shaft, and a spiral stirring blade is arranged on the portion, below the screen plate, on the stirring shaft. According to the chemical raw material stirring device, chemical raw material smashing and rolling are integrated with stirring in the raw material tank, labor is saved, and the stirring device has the advantages of being reasonable in structural design, easy to manufacture, convenient to use and maintain, high in work efficiency and the like.

The present invention provides a flexible circuit board and a display device. The flexible circuit board comprises a pad area and copper foil areas at both sides. Each copper foil area comprises two subsidiary copper foil areas and an alignment mark area, each alignment mark area comprises an alignment mark and a connecting structure, and each connecting structure electrically connects subsidiarycopper foils of the two corresponding subsidiary copper foil areas. The Orthographic projections of the alignment mark of each alignment mark area and the corresponding connecting structure on the flexible circuit board are not overlapped. The technical scheme can improve the welding precision of the flexible circuit board and other components and keep the integrity of the electrical connection ofthe copper foils, so that electrostatic interference signals and electromagnetic interference signals produced in the installing or working process of the flexible circuit board are timely conductedinto a grounding wire and eliminated, the problem that the interference signals affect the normal operation of the other components of the flexible circuit board or signal lines is avoided, and thus the signal transmission quality of the flexible circuit board is improved.

Provided is a device for utilizing a PLC to intelligently control a plurality of frequency converters to perform pressure regulating water supply. A traditional microcomputer water supply control mode is broken through, each pressurized water pump is controlled through one independent frequency converter to run, the damage to the whole device caused by the frequency converter damage is effectively avoided, and burnout of the frequency converters caused by reverse power transmission caused by suction adhesion of a contactor is also avoided. An air pressure water tank is arranged, the air pressure ratio in the water tank is controlled strictly, gas is supplemented when lacked, the regulating water quantity is increased, running time and starting times of the water pumps are shortened when the water utilization quantity is small, and the effects of energy saving and power saving are achieved obviously. Noise caused by gas and water pump air blockage caused by the fact that compressed gas in the tank enters a pipe network during the power outage and water supply stopping period of the device can be effectively avoided through the arrangement of air stopping valves in the tank. Reactive loss caused by high floatation of the water utilization quantity and frequent starting of a high-power water pump can be avoided by adopting a plurality of small-power water pumps to replace the high-power water pump. Secondary pollution to living water is avoided due to the arrangement of a buffering tank, the constant air pressure ratio in the air pressure water tank is controlled, and the regulating water quantity in the water tank is guaranteed.

The invention discloses a box-type substation which comprises a box and an automatic cooling system. The interior of the box is divided into three small chambers including a high-pressure chamber, a low-pressure chamber and a voltage transformation chamber by partitions, wallboards of each small chamber include inner wallboards and outer wallboards in spaced arrangement, the automatic cooling system is mounted in the box, and the outer wallboards are made of composite heat-insulating materials. The box is made of the composite heat-insulating materials, so that outside heat can be insulated from being transmitted into the box, and influences on operating of voltage transformation equipment in the box can be avoided. The automatic cooling system is mounted in the box, so that heat generated during operating of the voltage transformation equipment in the box can be discharged outside the box to guarantee the whole box-type substation to operate at a normal temperature, and safety of the substation is guaranteed.