117results about How to "Avoid fire risk" patented technology

The invention discloses a self-glued asphalt adhesive material, a preparation method of the self-glued asphalt adhesive material, and a self-glued asphalt waterproof coiled material. A raw material formula of the self-glued asphalt adhesive material comprises the following ingredients of petroleum asphalt, naphthenic oil, tackifying resin, butadiene styrene rubber and / or modified butadiene styrene rubber, polyethylene wax, elastomer polymers and filing materials. By using the high-initial-viscosity and high-heat-resistance self-glued asphalt adhesive material as a bonding layer for bonding the self-glued waterproof coiled material and a base layer (such as a roof); the polyethylene wax in the bonding layer and the petroleum asphalt take a crosslinking reaction, so that the heat resistance performance of the self-glued asphalt adhesive material is improved. The self-glued asphalt adhesive material has good bonding performance, and is fully bonded with the base layer, so that the bonding is firm; in addition, the heat resistance being higher than 90 DEG C can be born; the low-temperature flexibility reaches -30 DEG C; the self-glued asphalt adhesive material has high heat-resistance performance, so that the requirements of facade construction using the waterproof coiled material as the waterproof layer can be met; in addition, the softening overflowing of the self-glued asphalt adhesive material can be prevented. The waterproof requirements of the base layer in various climates can be almost met; the hot melting construction is not needed.

A rechargeable battery includes an electrode assembly having a first electrode and a second electrode, a first case housing the electrode assembly and electrically coupled to the first electrode, and a second case electrically insulated from the first case and housing the first case, wherein the second case is electrically coupled to the second electrode.

The invention relates to a building steel structure beam column assembly type rigid joint which is characterized in that splicing plates are interactively arranged on upper flanges and lower flanges of a cantilever beam and a frame beam, and the splicing plates on the two sides are connected with the beams by welding seams in a steel structure processing factory previously. During field mounting of the joint, the splicing plates firmly welded on the two sides serve as ear plates to allow a mounting beam section to be in place quickly; after being in place, the splicing plates are connected with the upper flange and the lower flange of the beam on the other side and spliced with a web plate by bolts; and the mounting of the beam column rigid joint is accomplished. The beam column joint is wholly spliced by the bolts in a mounting field, and is reasonable in structure, definite in force transmission, high in construction efficiency and good in safety; the field mounting is in place quickly; no welding is adopted; the mounting efficiency can be improved; the risk of a fire caused by the welding is avoided; and the joint is wholly assembled by the bolts in a construction field, so that a great convenience is brought to a construction site where the construction field condition is poor and the welding cannot be carried out conveniently.

A hair iron comprising a pair of openable / closable hair-sandwiching arms that each store in void spaces shielded by shielding members a heat-source plate and a hair-heating plate positioned adjacent to the heat-source plate and sandwiches hairs when the arms are closed; wherein the pair of arms are openably / closably connected on one end by a pivot, and spring pressure is used to maintain the pair or arms in opening directions in a normal condition; wherein the heating plates are installed so that they face each other; wherein tapered portions are provided in a base, on the void space side, of the heating plate, and a gasket is securely fitted in the formed tapered voids in order to improve the steam cutoff property of the void spaces; and wherein the temperature can be controlled easily at the operator's fingertips.

A method and apparatus for removing a string of casing from a well bore. The method and apparatus include a plurality of drill bits substantially aligned with each other for drilling a plurality of holes in the string of casing. The plurality of holes can be used to lift the string in casing from the well bore via a series of incremental casing sections.

A laundry machine (100) is proposed. The laundry machine comprises a drum (115) for housing the laundry to be treated, an encasing portion (105,120) for encasing the drum (115), and a lighting apparatus (245) for illuminating the inside of the drum (115). The lighting apparatus (245) comprises one or more lighting devices (250) associated to the drum (115), and a power feeding assembly for power supplying said one or more lighting devices (250). In the solution according to one or more embodiments of the present invention, the power feeding assembly comprises an electro-magnetic apparatus (265) arranged for power supplying, at least partially contactless, said one or more lighting devices (250).

The invention relates to a campus dormitory electricity monitoring system based on NB-IOT communication and a control method thereof. The system includes an electric detection module, an electric circuit break module, an infrared temperature monitoring module, a smoke sensing module, a wireless communication module, a main controller and a monitoring center, wherein the electric detection module and the electric circuit break module employs integrated design, the electric detection module and the power circuit break module respectively achieve signal feedback with the main controller, the infrared temperature monitoring module and the main controller have signal feedback, the main controller sends a command to the electric circuit break module to control on / off according to a human body infrared signal and the duration, a student dormitory is monitored and controlled under the weak electricity environment, the human body pyrolysis infrared technology is adopted to detect people existence in the dormitory, for example, indoor monitoring systems monitor safety of electricity, if no one is in the dormitory, the dormitory is directly powered off, and the risk of fire caused by chargingmicro-power products such as mobile phones and laptops when no one in the dormitory can be eliminated.

The invention relates to a sticky smoke dust removal system and method for actively regenerating pre-sprayed powder for a coke oven. The tops of bag type dust removers are provided with purified gas outlets; the purified gas outlets are connected with a dust removal fan, a muffler and a chimney in sequence; the lower parts of dust removal chambers of the bag type dust removers are provided with smoke dust inlets; the smoke dust inlets are connected with dust remover inlet pipelines; the dust remover inlet pipelines in front of the smoke dust inlets are provided with pre-sprayed powder inlets;the pre-sprayed powder inlets are connected with a powder exhaust nozzle of a powder active regeneration and jetting integrated device through powder conveying pipelines; the bottoms of ash bins of the bag type dust removers are provided with ash outlets; the ash outlets are connected with a mill dust inlet and a mill dust bin of the powder active regeneration and jetting integrated device respectively through a scraper. The sticky smoke dust removal system is used, through configuring the powder active regeneration and jetting integrated device, for realizing the automatic addition, the excess material outward delivery, the active pyrolysis and regeneration, the automatic spray coating, the output amount regulation and the recycling of the pre-sprayed powder in the dust removal system; the pre-sprayed powder does not need to be externally supplemented, and thus, the reliable and stable running of the dust removal system is ensured.

A method and apparatus for removing a string of casing from a well bore. The method and apparatus include a plurality of drill bits substantially aligned with each other for drilling a plurality of holes in the string of casing. The plurality of holes can be used to lift the string in casing from the well bore via a series of incremental casing sections.

The invention provides an elevator control system and method based on intelligent recognition. The system comprises an image acquisition module used for obtaining image data in an elevator in real time; an image detection module connected with the image acquisition module and used for recognizing the identity of people taking the elevator in the elevator according to the image data and recognizingwhether a pet or an electric vehicle exists in the elevator or not; an early warning module connected with the image detection module and used for carrying out early warning when the electric vehicleand / or the pet exist / exists in the elevator; and an elevator control module connected with the image detection module, wherein when the electric vehicle exists in the elevator, the elevator control module controls the elevator to be static and in a door opening state, and when no electric vehicle exists in the elevator, the elevator control module controls the elevator to move to a correspondingfloor according to the identity of people taking the elevator in the elevator. Contactless operation can be achieved so that the user experience can be improved.

The immersed liquid cooling heat dissipation module comprises a box body with an opening at the bottom, a liquid cooling plate for placing a battery module is arranged at the bottom of the box body, the liquid cooling plate and the box body form a closed structure, the box body is filled with a cooling liquid for immersing the battery module, and a liquid cooling medium is introduced into the liquid cooling plate. The box body is filled with the cooling liquid used for immersing the battery module, high safety and efficient heat dissipation performance are achieved, the battery module is directly cooled by arranging the liquid cooling plate on which the liquid cooling medium flows, and the heat dissipation capacity of the battery module is improved. The flow velocity of the liquid cooling medium of the liquid cooling plate is adjusted by monitoring the temperature of the battery, and the temperature of the battery is controlled within a reasonable working interval.

The invention discloses an automatic cotton laboratory sample compression forming device. The automatic cotton laboratory sample compression forming device comprises a base, a left box plate, a right box plate, a lower box door, an upper box door, crossbeams, an oil cylinder, a guide rod and a guide wheel, wherein the left box plate and the right box plate are arranged above the base, the lower box door and the upper box door which can be opened front and back are arranged on the left box plate and the right box plate, the crossbeams are arranged on the tops of the left box plate and the right box plate, the oil cylinder and the guide rod are arranged on the crossbeams, the guide wheel is matched with the guide rod, a main pressure device is arranged on the lower part of the oil cylinder, an upper pressure head is arranged on the lower part of the main pressure device, the guide rod penetrates through the guide wheel and the crossbeam and is then connected with the main pressure device, a lower pressure head is arranged on the upper part of the base, and the upper pressure head and the lower pressure head are matched with each other; the left box plate, the right box plate, the lower box door and the upper box door form a space capable of accommodating cotton. The automatic cotton laboratory sample compression forming device is relatively simple in structure, the remaining cotton samples after the inspection can be compressed into laboratory samples with certain specification, density and shape, the cotton sample processing way is in a mechanical mode instead of a manual operation mode, the working efficiency is effectively improved, and a positive role in better preventing the fire risk can be realized.

The invention discloses a rotary dehumidifier type condensation dehumidification device for metal armored equipment and a control method thereof. The device includes a rotary dehumidifier, a ventilation unit and an automatic condensation dehumidification controller; On the installed equipment, it is connected with the rotary dehumidifier through the air inlet pipe and the return air pipe; the device has a simple structure and a high degree of automation, which realizes the automatic remote control of the condensation of the metal armored equipment and greatly reduces the opening time of the dehumidification equipment. Avoid the fire risk caused by overheating of the dehumidification equipment inside the metal armored equipment; the internal humidity control of a single metal armored equipment is relatively uniform, and the humidity target value can be set arbitrarily, avoiding the phenomenon of uneven dehumidification inside the large-volume metal armored equipment , the dehumidification effect is good; the dehumidification process will not cause the internal temperature of the metal armored equipment to rise, avoiding the risk of excessive aging of the insulating material.

The invention relates to a fuzzy controller for a charger for an electric vehicle. The fuzzy controller adopts a fuzzy control technology to control supply or cut off of an alternating-current power supply to the applicable charger, determines whether the charger is converted in a floating-charge or charge-stopping state by judging the size of the current of the alternating-current power supply inputted into the charger of the electric vehicle roughly, sets the floating-charge delay time to make up the error of judgment, provides the certain floating-charge time for batteries, and sets the overtime counting time to limit the abnormal working time of the charger so as to prevent the faults of the system from expanding.

The invention relates to the field of brake systems and provides an electromagnetic actuation device suitable for a brake system. The electromagnetic actuation device comprises at least two fixed disks and at least one movable disk. The fixed disks are coaxial with the movable disks. Each movable disk is located between two adjacent fixed disks. Pairs of fixed disk iron cores are circumferentially disposed at intervals on each fixed disk. A fixed disk coil is wound on each fixed disk iron core. Each fixed disk coil is connected to an external power supply in a parallel manner. When the fixed disk coils are powered, polarity of two adjacent fixed disk iron cores is opposite and a magnetic field along different directions and perpendicular to a plane on which each fixed disk is positioned is generated. Movable disk iron cores corresponding to positions and number of the fixed disk iron cores are disposed on the movable disks. A movable disk coil is wound on each movable disk iron core along a radial direction of each movable disk. The movable disk coils are connected to external charging / power-utilizing parts. When the fixed disk coils are powered to generate magnetic fields and during rotation of the movable disks, induced current and electromagnetic fore which prevent the movable disks from rotating are generated in movable disk coils which emit heat, and kinetic energy needs to be overcome by the brake system is converted into electric energy, electromagnetic energy and heat energy.

The invention discloses an LDO power supply circuit comprising an LDO power supply and a capacitor. The capacitor is a ceramic capacitor of which one end is connected with the output end of the LDO power supply and the other end is connected to the ground. An aluminum electrolytic capacitor or a tantalum electrolytic capacitor is replaced by the scheme of arranging the ceramic capacitor to be connected in series with a small resistor so that the risk of fire of the capacitor can be avoided, the influence of high and low temperature can be avoided, and the circuit is enabled to be more flexible and reliable.

The invention discloses a stable combustion combustor based on pre-combustion chamber temperature control and an operation method thereof. A primary air rotational flow device of the stable combustioncombustor is arranged at an inlet of a pre-combustion chamber, so that a wind-powder mixture generates strong rotational flow before entering the pre-combustion chamber to be combusted, and the low-load stable-combustion performance of the combustor is ensured. A direct-current center air duct is arranged at an inlet of the pre-combustion chamber, and the phenomena of coking, burning loss and thelike of the pre-combustion chamber under high loads can be avoided by adjusting the opening degree of direct-current center air. Secondary air with adjustable rotational flow intensity is arranged onthe outer side of a cavity of the pre-combustion chamber, mixing of the secondary air and air powder flow in the pre-combustion chamber is delayed, generation of nitric oxide is reduced, and meanwhile the low-load stable combustion performance and the coking and burning loss prevention performance of the combustor can be improved in an auxiliary mode by adjusting the rotational flow intensity ofthe secondary air. The deep peak regulation capacity of a coal-fired boiler can be effectively improved, and the coal quality adaptability of a deep peak regulation unit is broadened.

The invention relates to a method for measuring soil organic matter, which comprises the following steps: putting a soil sample into a dry triangular flask; adding a potassium dichromate sulfuric acidsolution with a preset molar concentration into the triangular flask; putting the triangular flask filled with mixed solution into a drying oven for heating; after heating, taking out and cooling thetriangular flask; adding a preset volume of distilled water to enable the volume of the mixed solution in the triangular flask to reach a preset volume; adding an o-phenanthroline ferrous indicator with the volume matched with the acidity of the mixed solution according to the acidity of the mixed solution; and titrating the mixed solution in the triangular flask by using a ferrous sulfate solution. Through heating by the drying oven, the risk of fire possibly occurring in the heating process of the oil bath can be avoided. The soil sample in the triangular flask is accurately heated at constant temperature, so that the heating temperature can be accurately controlled. The triangular flask is directly heated in the heating process, there is no need to transfer the soil sample from a testtube to the triangular flask, and the risk of harm to the human body and clothes caused by digestion liquid transfer is avoided.

The present invention provides a power feed mechanism, a rotation pedestal device and a semiconductor processing device. The power feed mechanism is configured to feed an output power of a power source into a rotary part, and comprises: a conductive fixed part electrically connected with the power source; a conductive rotary part electrically connected with the rotary part and configured to perform synchronous rotation with the rotary part; and a conductive connection structure being in electrical contact with the conductive fixed part and the conductive rotary part without influence of rotation motion of the conductive rotary part. The power feed mechanism can improve the power transmission efficiency and can avoid sparking risk in the prior art.

The invention provides an intelligent gas alarm device. The device comprises a control system which is connected with a detection system, a power supply system, a display system, a linkage system, analarm system and a communication system and used for controlling the whole intelligent gas alarm device. The detection system adopts two or more gas sensors arranged in parallel to ensure that the alarm device continues to work after one of the sensors fails, is used for detecting the gas concentration, is connected with the control system and sends the detected gas concentration value to the control system; the power supply system is used for supplying power to the whole intelligent gas alarm device; the display system comprises a state indicating lamp and a liquid crystal display screen; thelinkage system is connected with the power supply system and the control system, and the linkage system opens a window, closes a gas electromagnetic valve or closes an air switch according to an instruction of the control system and requirements; the alarm system comprises an LED flashing lamp, a buzzer and a voice alarm; and the communication system is used for enabling the intelligent gas alarmdevice to have a wireless communication function.

The invention relates to a concrete curing device and a curing method for winter construction in a cold region. During winter construction in the cold region, a current concrete curing measure is highin energy consumption, has potential safety hazard, and is difficult to fit for concrete curing in winter in the cold region. The curing device is a rectangular frame body sequentially enclosed by four side plates, wherein concrete is filled in the rectangular frame body; a top plate and a bottom plate are horizontally arranged on the top part and the bottom part of the rectangular frame; a phase-change material layer is arranged on the outer wall of a template frame and is an electrified and heat-storage layer body; and a heat insulating layer is arranged on the outer wall of the phase-change material layer. According to the method provided by the invention, the phase-change material layer located between the template frame and the heat-insulating layer transfers heat to the concrete through the template frame, and continuously heats and cures the concrete through a repetitive heating and heat releasing way. The concrete curing device and the curing method for winter construction inthe cold region provided by the invention are used for concrete curing in winter site construction in the cold region.

The invention discloses an exhaust hood capable of automatically opening and closing air deflectors. The exhaust hood mainly comprises an exhaust fume collecting hood assembly, a host shell assembly and a fan assembly. The host shell assembly is located on the upper part of the exhaust fume collecting hood assembly; the fan assembly is located in the host shell assembly; the slidable air deflectors are arranged on the exhaust fume collecting hood assembly, and is connected with a drive device; an air inlet is formed in the exhaust fume collecting hood assembly; the drive device drives the airdeflectors to slide between a first position for shielding the air inlet and a second position for opening the air inlet. According to the exhaust hood provided by the invention, the two air deflectors are arranged under the exhaust hood and correspond to independent movement systems; when a cooking utensil on one side is used, the air deflector corresponding to the cooking utensil can be opened,so that the occurrence of the phenomenon that a lampblack collecting effect is influenced by turbulence caused by hedge of an air flow on the other side can be prevented, a lampblack escape phenomenonduring a rising process is reduced, and the lampblack collecting effect is improved maximally; when cooking utensils on two sides are used at the same time, both the left air deflector and the rightair deflector can be opened.

The invention discloses a boiler stable combustion control method for a deep peak regulation working condition of a coal-fired unit. The boiler stable combustion control method comprises the following steps that the coal supply quantity entering a boiler hearth is controlled through a coal feeder frequency converter instruction (1), the primary air quantity required for conveying pulverized coal is controlled through a coal grinding mill hot air door baffle instruction (2), the secondary air quantity entering the boiler hearth is controlled through an air feeder moving blade instruction (3), and after the unit enters the deep peak regulation working condition, an emergency steady-combustion coal quantity operation loop (4) is additionally arranged in front of a coal feeder instruction operation loop (7) for controlling the coal feeding quantity entering the boiler hearth; and an emergency steady-combustion air volume calculation loop (50) is added in front of a air feeder moving blade instruction calculation loop (12). Through an arranged judgment threshold device, the sensitivity of entering the deep peak regulation working condition is improved, the combustion working condition of a boiler can be rapidly adjusted through reasonable cooperative processing distribution, the combustion stability of the boiler in the critical state is improved, the fire extinguishing risk of the boiler is avoided, and long-term safe and stable operation of the unit is maintained.

The invention relates to a surge protection device with high breaking capacity; the surge protection device has a shell that is provided with at least two extraction electrodes, and a voltage limitingdevice and a thermal tripping mechanism that are installed in the shell. The thermal tripping mechanism comprises a fixed assembly, a movable assembly and a thermal triggering device; the fixed assembly and the movable assembly form a plurality of displacement switches which are arranged in series, and the thermal triggering device and the movable assembly are arranged in a linkage mode, so thatthe problems that a thermal protection device of an existing surge protection device does not have an overcurrent protection function and the thermal protection device is prone to false tripping or advanced tripping when surge current flows through are solved.

The invention provides a mechanical change-over switch arrangement structure of an on-load tap-changer for a converter transformer. The mechanical change-over switch arrangement structure of the on-load tap-changer for the converter transformer comprises a change-over switch and a tap selector, wherein the change-over switch is arranged outside an oil tank of the converter transformer body, and the tap selector is arranged inside the oil tank of the converter transformer body; and a mechanical driving mechanism is arranged on the oil tank of the converter transformer body, is respectively connected with the change-over switch and the tap selector, and is used for driving the change-over switch to switch and driving the tap selector to act. The change-over switch is arranged outside the oiltank of the converter transformer body of the converter transformer, and the tap selector is arranged inside the oil tank of the converter transformer body, so that the change-over switch is separated from the oil tank of the converter transformer body, and the oil tank of the converter transformer body can be prevented from catching fire when an inter-stage short-circuit fault occurs to the change-over switch.

The invention relates to a thermal insulation pipe joint structure and a construction method of a thermal insulation pipe joint. The thermal insulation pipe joint structure is used for connection of prefabricated thermal insulation pipes and comprises a glass fiber reinforced plastic sleeve, manually painted glass fiber reinforced plastics and a joint thermal insulation layer, wherein the two ends of the glass fiber reinforced plastic sleeve are coated by the manually painted glass fiber reinforced plastics, and the joint thermal insulation layer is formed inside the glass fiber reinforced plastic sleeve. The construction method of the thermal insulation pipe joint comprises the following steps: step 1, the glass fiber reinforced plastic sleeve is provided, and the joint of two prefabricated thermal insulation pipes is sleeved with the glass fiber reinforced plastic sleeve, wherein the two prefabricated thermal insulation pipes are connected in advance; step 2, the two ends of the glass fiber reinforced plastic sleeve are coated by the manually painted glass fiber reinforced plastics, wherein the manually painted glass fiber reinforced plastics extend to outer protective layers of the prefabricated thermal insulation pipes; step 3, the joint thermal insulation layer is formed in the glass fiber reinforced plastic sleeve; step 4, filling holes and exhaust holes in the glass fiber reinforced plastic sleeve are sealed. According to the thermal insulation pipe joint structure and the construction method of the thermal insulation pipe joint, no naked flame is needed for site operation, and therefore the fire risk caused by naked flames in a construction process in a limited space can be effectively eradicated.

The invention provides an opposite spraying type impinging stream oily fume purification device. The device comprises a purification tank and a water storage tank, wherein one side of the purification tank is welded with one side of the water storage tank through a pipeline; an oily fume gas inlet and a purified gas discharge port are formed in the other side of the purification tank, and the purified gas discharge port is located above the oily fume gas inlet; a purification tank drainage port is formed in the bottom of the purification tank, an oily fume gas and water impinging area is formed in the middle of the purification tank, a first jet pipe and a second jet pipe which are embedded into each other are arranged in the impinging area, the first jet pipe and the second jet pipe are oppositely arranged in the same plane, distributed in a staggered manner and both provided with jet holes, one side of the first jet pipe is connected with an oily fume inlet, the other side of the first jet pipe is sealed through a pipeline, one side of the second jet pipe is connected with a water storage tank water outlet of the water storage tank, and the other side of the second jet pipe is sealed through a pipeline. The opposite spraying type impinging stream oily fume purification device has the benefits as follows: the flue gas temperature and the flue gas emission concentration in a gas duct are remarkably reduced; the fire risk is reduced, and the air quality is improved; the device is simple and convenient to mount, maintain and operate.

A method for producing a hydrophobic element is disclosed and includes the following steps: a) preparing a mixture of water and an organic material from sustainably renewable resources, b) moulding the mixture prepared in step a) to obtain a moulded element, c) drying and densifying the moulded element obtained in step b) to obtain a dried and densified element-, and d) impregnating to the core the dried and densified element obtained in step c) with a binder composed of organic materials from sustainably renewable resources. A covering hydrophobic element containing more than 90%, and preferably more than 99%, of an organic material from sustainably renewable resources is also disclosed.

Disclosed is a system for interrupting an electric power of an outlet or closing a gas valve through detection of the absence of a user. The system includes a signal transmission device installed on an outside of the outlet and a gas valve device. The signal transmission device detects the existence of the user to output the gas valve device receive the control signal to control the flow of connected to signal an electric power or gas.