51results about How to "Meet the requirements of on-site use" patented technology

The invention discloses a portable nutritional-recipe electronic scale and a weighing data processing method therefor, relates to a weighing instrument or method for a special purpose, and especially relates to a weighing instrument which has functions of diet guide and nutrition recipe according to the weighing results. The electronic scale comprises a scale body, a scale disc, and a weighing module. An embedded system in the scale body is connected to a food nutrition module, a standard recipe module, and a menu module through a database management module. The embedded system is connected to the weighing module, enables the weight data of food to be transmitted to a meal list module of the embedded system, and generates a meal list containing the weight data of good. The embedded system obtains the nutrition information of the food from the food nutrition module according to the generated meal list, calculates the nutrition content of all foods of the meal list, and displays the nutrition content through a touch screen. The embedded system achieves man-machine interaction of a weighing process through the touch screen connected to a touch screen module, and adjusts the weight and variety of food in the meal list according to groups, and achieves the functions of diet guide and nutrition recipe.

The invention discloses a dynamic detection technology for well control products and wellhead devices in a state of high and low temperature. The air temperature of an inside cavity for measured objects is heated to a rated high temperature of 60 DEG to 121 DEG or reduced to a rated low temperature of subzero 18 DEG to subzero 60 DEG, then the temperature is maintained at the rated temperature; a measured object is pressurized to the rated working pressure of 1 to 140 MPa, being repeatedly opened at least 20 times at the rated pressure; the temperature value and the pressure value are collected after the rated pressure stabilizing for 0.5 to 2 hours, then whether the quality and performance of the measured object is qualified is decided by fluctuations of the temperature value and the pressure value. The dynamic detection technology comprising pressure testing in high and low temperature conditions, then increasing or reducing the temperature of the measured object, after repeatedly opening in high and low temperature conditions, simulating the sealability of the measured object after multiple opens with low surrounding temperature and high medium temperature to simulating the practical working condition to decide whether the quality and performance of the measured object meets the requirements of the site use.

The invention discloses an environment-friendly flame-retardant cable material and a preparation method thereof. The cable material comprises, by weight, 30-40 parts of an ethylene-vinyl acrylate copolymer, 10-20 parts of an EPDM rubber, 7-15 parts of modified talcum powder, 22-30 parts of a flame retardant, 3-10 parts of whisker, 2-8 parts of an antioxidant and 0.5-5.5 parts of a plasticizer. Thepreparation method comprises (1) weighing: weighing components according to the specified ratio, (2) mixing, (3) mixing: mixing the raw materials in a kneader at a temperature of 140 to 160 DEG C for25min, and (4) extrusion granulation: adding the raw materials into a twin-screw extruder and carrying out extrusion granulation at a processing temperature of 200-220 DEG C. The environment-friendlyflame-retardant cable material has good flame retardant performances and excellent comprehensive performances. The preparation method has simple processes and high processing efficiency and can meetthe needs of large-scale industrial production.

The invention provides a matched curing agent for casting furan resin and a preparing method thereof. The method comprises: a, adding phenol into a reaction kettle, starting a stirrer, and adding sulfuric acid slowly to enable a material temperature in the reaction kettle to not exceed 60 DEG C; b, after the sulfuric acid is added, opening a steam valve, rising the temperature to 93-103 DEG C and timing and performing heat preservation; c, ending the heat preservation and cooling to 60 DEG C, and adding a fortifier and stirring; d, cooling to 50 DEG C and adding water; e, after the water adding is finished, adding a regulator and continuing to stir; f, cooling to 40 DEG C, sampling for inspection, and metering, packaging and putting into storage after the inspection is qualified. A phenolsulfonic acid curing agent generated by the preparing method can realize batch production, and usable time, hardening and strength of a sand mould all meet use requirements on site.

The invention discloses a remote electric leakage locating and detecting device for low voltage overhead lines and belongs to the technical field of electric power equipment detection. The remote electric leakage locating and detecting device is provided with a cross-core type current transformer, a filter circuit, an operational amplifier circuit and an MCU main chip, wherein the MCU main chip is respectively connected with a storage circuit, a key input circuit, an RS485 circuit, an alarm circuit and a power source processing detection circuit. The RS485 circuit is connected with a wireless transceiver module. The remote electric leakage locating and detecting device can carry out remote detection without being influenced by external magnetic field interference, and has the advantages of accurate measurement and rapid speed. Current leakage can be checked to eliminate hidden dangers current leakage points to avoid electric shock, fire and other safety accidents which have serious impact on personal and property safety.

The invention belongs to the technical field of polymer injection of an oil field. In order to solve the problem that currently, rapid dispersion and injection of powder polymer in water and the system operation are influenced a lot by the outside environment, the invention discloses a system for rapidly dispersing and diluting the powder polymer in an offshore or alpine or fault-block oil field, which comprises a water supply tank, a dry powder tank and a buffer tank. The water supply tank, the dry powder tank and the buffer tank are all connected with a nitrogen source; the dry powder tank is sequentially connected with a feeder, a buffer container, a negative pressure jet device and the buffer tank; the water supply tank is sequentially connected with a water supply pump and the negative pressure jet device; the water supply tank is also connected with a diluting water pump; the buffer tank is further connected with a mother liquid conveying pump; an outlet of the mother liquid conveying pump is connected with an outlet of the diluting water pump. The system disclosed by the invention is compact in structure and convenient to move; the integral system is in the protection of nitrogen, so that the influence of the outside environment can be avoided and oxygen in the air is prevented from degrading the viscosity of target liquid to influence oil productivity.

The invention relates to an external connection gas source and ion mobility spectrometry combination system, which is composed of an air generator (automatic air source), a gas piping coupling component and an ion mobility spectrometry rapid detector, the air generator extracts air in a gas tank, the air in the gas tank is performed with processes of oil removal, water removal, dedusting and purifying, the air is conveyed to a suction pump inlet of the ion mobility spectrometry rapid detector through the gas piping coupling component, and is purified and flowed in the split mode to be taken as a drift gas and a carrying gas of the ion mobility spectrometry. The system can treat the air humidity as lowest relative humidity of 0%, and can make the ion mobility spectrometry to operate for 1-6 months under the condition that the relative humidity is less than 2%, the ion mobility spectrometry rapid detector can increase the sensitivity of the tested sample under the humidity condition, and the types of the detection sample is increased.

The invention discloses conductive anti-corrosion paint and a preparation method thereof. The conductive anti-corrosion paint is mainly prepared from the following ingredients in parts by weight: 24 to 44 parts of carboxyl acrylic resin, 16 to 32 parts of carboxyl acrylic resin curing agents, 4 to 12 parts of conductive filling materials, 0.5 to 3.2 parts of diluents, 0.8 to 3.8 part of preservatives, 0.3 to 1.6 parts of coupling agents, 0.2 to 0.8 part of flatting agents and 15 to 35 parts of solvents. The paint recipe and proportion are optimized, so that the conduction and anti-corrosion functions of the paint are realized; the spray coating or brush coating mode is used for preparing the conductive anti-corrosion coating on the surface of the treated workpiece; the paint can be widelyused on metal structure elements of electric industry grounding net device, petrochemical industry oil storage devices and the like; the functions of conduction, static electricity conduction, anti-corrosion and the like can be realized; the field use requirements are met.

The invention relates to a new detachable direct connection horizontal single-stage pump. The single-stage pump consists of three parts, which are a pump, an elongated shaft motor and a pedestal, and is characterized in that the pump comprises a pump body, an impeller, a pump cover and a mechanical seal, wherein the part for mounting the elongated shaft motor of the pedestal is provided with a dovetail groove sliding guide rail; the pump body is fixedly arranged at one end of the pedestal by bolts; the bottom of the elongated shaft motor is provided with a dovetail groove; the dovetail groove at the bottom of the elongated shaft motor is formed in the dovetail groove sliding guide rail on the pedestal. The impeller, the pump cover, the mechanical seal and the elongated shaft motor are assembled into an integrated component. The single-stage pump has the advantages that the disassembly is flexible and convenient during maintenance or replacement of a spare part since a back opening door type structure is adopted, the maintenance or replacement of the spare part is also extremely easy and no special lifting appliance or personnel are required even if a high-power motor pump unit is arranged so that the maintenance time and cost are saved, the motor is in direct connection with the pump so that the middle structure is simplified and the stability of operation is enhanced, the pump has a simple structure and is easy to implement, the defects of the conventional direct connection single-stage pump are overcome and the requirements for field use of clients can be fully met.

The invention belongs to the technical field of oil field chemistry and in particular relates to a neutral hard scale softening agent for a three-component compound flooding screw pump well, aiming at solving the problem that the screw pump well is excessively corroded by a scale cleaning agent so that the screw pump well cannot be washed with acid after scale is formed. The neutral hard scale softening agent is prepared from organic phosphate, organic phosphonate, a dispersant, alkali and water and the content of the components is as follows in percentage by weight: 10 percent to 40 percent of the organic phosphate, 2 percent to 10 percent of the organic phosphonate, 1 percent to 5 percent of the dispersant, 1 percent to 3 percent of the alkali and 50 percent to 80 percent of the water. The neutral hard scale softening agent provided by the invention can be used for scale removal and releasing of the three-component compound flooding screw pump well; the scale of parts including a screw pump rotor and the like is completely softened and fallen off and completely cleaned; the neutral hard scale softening agent has the advantages that the corrosion is low, any injury on a chromium-plated coating of the screw pump rotor is not caused, the coating of the rotor does not fall off, a condition that working is not carried out due to pump leakage is avoided and the production time efficiency of the screw pump well can be effectively ensured and the like.

The invention discloses a repairing method for a connecting rod for a reeling machine jaw. The vertical distance actually required between two pin holes is obtained by measurement and calculation; the vertical distance actually required between the two pin holes is divided by a sin value of the maximum stretch corner of the connecting rod, so that the actual length of the connecting rod to be repaired is obtained; and a connecting rod meeting the length requirement is selected to replace the connecting rod according to the actual length of the connecting rod to be repaired, thereby accomplishing the repairing of the connecting rod for the reeling machine jaw. With the adoption of the method, the wearing of each part is not required to be analyzed and modified, only gaps at the head and tail of a whole worn chain is required to be controlled and eliminated, the connecting rod is lengthened or shortened for compensation, and other worn parts such as copper bushes and pin shafts are still repaired according to the designed dimensions. The method is simple and practical, complicated detailed analysis is avoided, and the practice proves that the repairing quality of a reeling machine can be ensured completely, and the field use requirements can be met.

The invention discloses an underwater drilling tool attitude detection system, which comprises a tunneling mechanism, a power lift mechanism and an operation control system. The power lift mechanism is arranged on the ground and used for lifting the tunneling mechanism, and the operation control system is used for controlling operation of each mechanism. The tunneling mechanism comprises a tunneling frame, the outer end of the tunneling frame is in slide guide fit with a slide groove type anti-torque device fixedly mounted on the vertical shaft wall, a main driving device is mounted in the middle of the tunneling frame and connected to a drilling arm below the tunneling frame, and at least two auxiliary driving devices mounted on the drilling arm are connected with a drilling tool below the drilling arm. Two tilt angle sensors are horizontally mounted on the tunneling frame, a plurality of first position sensors are uniformly distributed on the drilling arm, a plurality of second position sensors are uniformly distributed on the drilling tool, and the tilt angle sensors, the first position sensors and the second position sensors are all connected with the operation control system.The underwater drilling tool attitude detection system is high in sensitivity, low in power loss and great in anti-interference performance and well meets onsite utilization requirements.

The invention discloses a detection technology for well control products and wellhead devices in conditions with high-temperature gaseous medium, comprising steps as follows: heating and stabilizing the air temperature of an inside cavity for measured objects to a rated high temperature of 60 DEG to 121 DEG; pressurizing a measured object to a rated working pressure of 1 to 140 MPa and stabilizing the pressure for 0.5 to 2 hours, collecting the temperature and pressure values of the measured object, deciding whether the quality and performance of the measured object is qualified according to fluctuations of the temperature and pressure values. Through pressure testing in high-temperature gaseous medium and increasing the temperature of the measured object, the invention can sufficiently simulate the sealability of the measured object in high environment temperature and gaseous medium to simulate the practical working condition to decide whether the quality and performance of the measured object meets the requirements of the site use.

The invention relates to a slender-rod pressure release valve. A valve body is a cylinder; an upper valve cover is hermetically arranged on the top of the valve body; a bottom cover is hermetically arranged on the bottom of the valve body; the upper valve cover, the valve body and the bottom cover form a sealed cylindrical cavity; a valve element is assembled in the cylindrical cavity and can move up and down; the lower end of a valve rod is connected with the valve element, and the upper end of the valve rod passes through a central through hole of the upper valve cover; the top of the valve rod is connected with the lower end of a slender rod vertically arranged; the upper end of the slender rod is connected with a support rack; the support rack is fixedly connected with the upper valve cover; the bottom cover is provided with a medium high-pressure input passage; inner port of the medium high-pressure input passage is opposite to the bottom of the valve element; the valve body is provided with a medium low-pressure output passage; an inner port of the medium low-pressure output passage is positioned in an inner wall of the valve body; when the valve element is kept static, the inner port of the medium low-pressure output passage is plugged by the valve element; when the valve element moves upward, the inner port of the medium low-pressure output passage is opened. The slender-rod pressure release valve is wide in application range and high in adjustment precision.

The invention discloses a roller dismounting device for a sizing mill. The roller dismounting device comprises a downward pressing device, a push-pull device and a rack, wherein the downward pressing device comprises a downward pressing hydraulic cylinder and a hydraulic system A matched with the downward pressing hydraulic cylinder, the downward pressing hydraulic cylinder is vertically fixed at the top end of the rack, the telescoping end of the downward pressing hydraulic cylinder faces downwards, and the hydraulic system A controls telescoping of the downward pressing hydraulic cylinder; a photoelectric switch A is further arranged on the rack; the push-pull device comprises a push-pull hydraulic cylinder, a hydraulic system B matched with the push-pull hydraulic cylinder, guide tracks and a bearing plate, the push-pull hydraulic cylinder is horizontally arranged on the surface of a work platform of the rack, the guide tracks are laid on the surface of the work platform of the rack, the bearing plate is glidingly mounted on the guide tracks, the push-pull hydraulic cylinder drives the bearing plate to move along the guide tracks, the bearing plate is used for accommodating rollers, and a photoelectric switch B is further arranged on the surface of the work platform of the rack. By means of the roller dismounting device for the sizing mill, the working efficiency for roller dismounting is improved, the labor intensity is reduced, and the safety coefficient of work is increased.

The invention discloses a deep dehumidification energy-saving fresh air unit. The unit consists of a fresh air duct and a return air duct, a fresh air inlet and an air supply port are arranged on thefresh air duct, a fresh air fan is arranged in the fresh air duct between the fresh air inlet and the air supply port, a return air inlet and an exhaust port are arranged on the return air duct, the return air duct between the return air inlet and the exhaust port is provided with a return air fan, a first direct expansion system, a second direct expansion system and a third direct expansion system are cooperatively arranged in the fresh air duct and the return air duct. The first direct expansion system comprises a first evaporator, the second direct expansion system comprises a second evaporator, and the third direct expansion system comprises a third evaporator and a third condenser, wherein the first evaporator, the second evaporator, the third evaporator, and the third condenser are sequentially disposed in the fresh air duct. The invention fully utilizes the ground source water, the return air energy and the reheat energy, and simultaneously the first evaporator replaces the water meter cooler, the secondary heat transfer energy loss is reduced, and the whole energy saving effect is obvious. At the same time, the invention is suitable for winter working condition and can heatfresh air.

The invention discloses an adjustable pull rod of a core bar support frame. The adjustable pull rod (1) is characterized by consisting of a first pull rod (2), a second pull rod (3), an adjusting nut (4) and a fixed bolt (5), wherein the first pull rod (2) is an integrated structure, one end is a pin shaft hole having a shaft sleeve, and the other end is a projected external thread; the second pull rod (3) is an integrated structure, one end is a pin shaft hole having a shaft sleeve, and the center of the other end is an internal thread; the adjusting nut (4) is an internal / external thread structure, is in fit connection with the external thread of the first pull rod (2) through the internal thread, is in fit connection with the internal thread of the second pull rod (3) through the external thread, and is positioned on the second pull rod (3) through the fixed bolt (5); internal and external threads of the adjusting nut (4) have the same rotating direction and different pitches; and when the adjusting nut (4) rotates by one lap, the length of the pull rod is changed by a pitch difference, so that the purpose of finely adjusting the length of the pull rod can be achieved, and the precise centering of three support rollers of the core bar support frame is realized.

The invention relates to a nano-material modified silicone acrylic emulsion. The nano-material modified silicone acrylic emulsion is prepared from the following raw materials in percentage by weight:65-75% of an organic silicon modified acrylic emulsion, 1-3% of a pH regulator, 10-30% of a nano-material, 1.5-2% of a dry film mildew inhibitor, 1.5-2% of a hydrophobic agent and 0-10% of deionized water. By using the nano material, the dry film mildew inhibitor and the hydrophobic agent and adjusting the dilution process, the product not only satisfies the field use requirements, but also improves the properties of wetting permeability, drying speed, water resistance, mildew resistance and the like on the muddy base material. The silicone acrylic emulsion has a good reinforcing effect and can be used for reinforcing and repairing muddy cultural relics.

The invention provides a sealing structure for a soluble bridge plug, and relates to the technical field of oilfield downhole tools. The butt joint position of two push rings is in the middle of a glue barrel, the two push rings are in butt joint and are connected through a connecting buckle, each push ring is connected with a baffle ring through a tension spring, the cross section of the connecting buckle is in a U shape, and vertical face ring plates on the two sides of the U-shaped connecting buckle are clamped in ring grooves of the push rings; a sharp-corner-shaped cutting edge abutting against the inner wall of the connecting buckle is arranged on the inner sides of the two vertical face annular plates of the connecting buckle and at the butt joint position of the two push rings, and a section of thin-walled pipe is arranged at the cutting edge position of the connecting buckle; and a plurality of one-way teeth facing the baffle rings extend from the outer circles of the push rings from the butt joint position. The sealing structure for a soluble bridge plug has the following beneficial effects that the expandable push rings are arranged, the connecting buckle is broken in the expansion process of the rubber barrel, the one-way teeth on the push rings perform scraping treatment on the inner wall of a sleeve at the expansion part of the rubber barrel, dirt, impurities and oil on the inner wall of the sleeve are cleaned away, the treated inner wall of the sleeve is smooth and clean, and the sealing effect of the rubber barrel is improved.

The invention provides a side pushing device and a hydraulic support. The side pushing device comprises a first side pushing driving assembly, a second side pushing driving assembly and side protection plates; the first side pushing driving assembly is provided with a first driving end and a first fixing end, and the first fixing end is connected with a supporting plate outside the side pushing device; the second side pushing driving assembly is provided with a second driving end and a second fixing end, the second fixing end is connected with the supporting plate, and the second side pushingdriving assembly and the first side pushing driving assembly are oppositely arranged in the first direction; the side protection plates are arranged at the first driving end and the second driving endcorrespondingly; and the first driving end can move in the first direction relative to the first fixing end, and the second driving end can move in the first direction relative to the second fixing end. According to the technical scheme, the first side pushing driving assembly and the second side pushing driving assembly are relatively independent and drive the corresponding side protection plates independently, so that the use stability and reliability of the side pushing device are ensured, and the stable and reliable work of the side pushing device is further ensured.

The invention relates to a small-flow control valve. A guide sleeve is arranged in a valve cavity and is also arranged on a spacer bush; a bush seat is arranged in an inner hole of the guide sleeve, is also arranged on a valve seat and is pressed by the guide sleeve; a sealing soft bush is arranged in an inner cavity of the bush seat; bush assembly center through holes which axially penetrate through and are communicated are formed in the center of the bush seat and the center of the sealing soft bush; a valve core is assembled in the inner hole of the guide sleeve, an inner hole of the spacer bush, the bush assembly center through holes and the valve seat center hole in a moving manner; the outer circumferential wall of the upper part of the valve core and the inner hole wall of the guide sleeve are in seal sling fit; the outer wall of the lower part of the valve core is in seal sliding fit with the inner walls of the bush assembly center through holes and the inner wall of the center hole of the valve seat; a V-shaped oblique cutting groove along the length direction of the valve core is formed in the outer wall of the lower part of the valve core and has an inclined angle alpha in the length direction and an included angle beta in the direction of the cross section. According to the small-flow control valve disclosed by the invention, the field use requirement can be better met, the miniflow adjustment is realized, the manufacturing cost is reduced, and the control precision is improved.

The invention discloses a drilling stroke and pressure control system for a vertical shaft sinking machine. The system comprises a plurality of synchronous winch systems, the synchronous winch systemsare peripherally distributed on the ground along a vertical shaft and in one-to-one correspondence to multiple lifting positions on the vertical shaft sinking machine, and movable pulleys are arranged at the lifting positions respectively. A plurality of groups of upper and lower limiting sensors as many as the synchronous winch systems are mounted on the inner side of a segment on the wall of the vertical shaft, and the upper and lower limiting sensors and coders of the synchronous winch systems are connected with a controller. Attitude stability of a tunneling structure can be guaranteed, perpendicularity in vertical shaft tunneling can be well controlled, high reliability and high accuracy in drilling stroke and pressure control are realized, and onsite utilization requirements can bewell met.

The invention discloses an underwater drilling tool attitude detection system. The system comprises a tunneling mechanism, a power lift mechanism arranged on the ground and used for lifting and releasing the tunneling mechanism and an operation control system used for controlling operation of the mechanisms, wherein the tunneling mechanism comprises a tunneling rack, the outer end part of the tunneling rack is in sliding pilot fit with a chute type anti-torque device fixedly mounted on the wall of a vertical shaft, a main drive device is mounted in the middle of the tunneling rack and connected onto a drill boom located below the tunneling rack, and at least two auxiliary drive devices mounted on the drill boom are connected with a drilling tool located below the drill boom; two tilt anglesensors are horizontally mounted on the tunneling rack, a plurality of first position sensors are uniformly distributed on the drill boom, a plurality of second position sensors are uniformly distributed on the drill boom, and the tilt angle sensors, the first position sensors and the second position sensors are connected with the operation control system. The underwater drilling tool attitude detection system is high in sensitivity, quite low in power loss and high in anti-interference performance and can meet the requirement of field service.

The invention provides a TFK-II parking anti-running device computer control system. The TFK-II parking anti-running device computer control system comprises a computer operation platform, a manual emergency operation platform and a control cabinet, wherein the computer operation platform and the manual emergency operation platform are arranged in a peak tail signal cabin, and the control cabinet is arranged in a transfer room near an equipment site. An optical cable serves as a transmission medium between the computer operation platform and the control cabinet and comprises an optical fiber MODEM1-1 connected to the computer operation platform and an optical fiber MODEM1-2 connected into the control cabinet, and another optical cable serves as a transmission medium between the manual emergency operation platform and the control cabinet and comprises an optical fiber MODEM2-1 connected to the manual emergency operation platform and an optical fiber MODEM2-2 connected into the control cabinet, wherein the optical fiber MODEM1-1 is connected with the optical fiber MODEM1-2, and the optical fiber MODEM2-1 is connected with the optical fiber MODEM2-2. The TFK-II parking anti-running device computer control system has the advantages of being long in transmission distance, high in stability, strong in extended function, stable in performance, high in reliability and convenient to operate, modular design is adopted, and an operation interface is clear and visualized.

The invention discloses a cooling coating for a power device and a preparation method thereof. The cooling coating comprises the following raw materials in parts by weight: 40-48 parts of epoxy resin,12-16 parts of conductive metal powder, 9-13 parts of carbon nanotubes, 3-5 parts of fumed silica, 4-8 parts of polyacrylamide, 2-4 parts of sodium dodecyl benzene sulfonate, 1-4 parts of dioctyl phthalate, 4-6 parts of silicon nitride, 2-5 parts of nano titanium dioxide, 4-8 parts of polyvinyl butyral, 1-3 parts of a coupling agent, 0.5-2.8 parts of a dispersant, 0.3-2.2 parts of a defoamer and22-34 parts of a solvent. The cooling coating has a cooling function, can effectively reduce the temperatures on the surface and inside the power device, and has an obvious cooling effect.

The invention provides a variable frequency speed regulation control method and control device of a pump. According to the method, the output rotating speed of a frequency converter is controlled through the torque of a driving motor, so that the output flow of the plunger-kind pump is controlled, the speed of the frequency converter is reduced under the condition that the flow meets the application requirement, so that energy conservation and consumption reduction are achieved, abrasion during the period is reduced, and the service life of the pump is prolonged.

The invention discloses a heat dissipation coating for a power device and a preparation method thereof. The coating is prepared from the following raw materials in parts by weight: 40 to 48 parts of organic silicon resin, 12 to 16 parts of conductive metal powder, 9 to 13 parts of carbon nano tube, 3 to 5 parts of silicon dioxide, 4 to 8 parts of polyacrylamide, 2 to 4 parts of bentonite, 1 to 4 parts of dioctyl phthalate, 4 to 6 parts of silicon nitride, 2 to 5 parts of nano titanium dioxide, 4 to 8 parts of polyvinyl butyral, 1 to 3 parts of adhesion promoter, 0.5 to 2.8 parts of dispersingagent, 0.3 to 2.2 parts of leveling agent and 22 to 34 parts of solvent. The heat dissipation coating disclosed by the invention has a heat dissipation function, can effectively reduce temperatures ofthe surface and the inside of the power device and has obvious heat dissipation and cooling effects.

The invention relates to a novel direct-connected single-stage pump which comprises a pump body, impellers, a pump cover, an inflow section, a lengthened shaft motor and a base. The novel direct-connected single-stage pump is characterized in that molten bottom feet are arranged on the pump cover and the inflow section, bottom feet are arranged under the lengthened shaft motor, the pump body is arranged between the pump cover and the inflow section, the pump cover and the inflow section are linked through double-screw bolts, and the lengthened shaft motor is arranged on one side of the pump cover. The novel direct-connected single-stage pump is characterized in that the pump cover, the inflow section, the bottom feet of the lengthened shaft motor are all arranged on the base. The novel direct-connected single-stage pump has the advantages that when a spare part is overhauled or exchanged, a user can not only conduct overhauling and exchanging by dismantling the motor to unlock the pump body, but also conduct overhauling and exchanging by dismantling the inflow section to unlock the pump body, and the pump body can be assembled by rotating at any angle. The novel direct-connected single-stage pump is simple in structure and easy to achieve, makes up shortage of the existing direct connection single stage pump and is capable of abundantly meeting requirements of a client on filed use.

The invention relates to a disc spring type axial vibration acceleration tool. The problem that an existing shock absorption effect provided only by hydraulic pressurization is not obvious and a drillbit is prone to drill to unstable is mainly solved. The disc spring type axial vibration acceleration tool is characterized in that the lower end of an upper connector (1) is in threaded connection with an outer shell (3); a lower connector (4) is mounted on a lower boss in the outer shell (3), a lining pipe (2) is mounted in a concave platform at the top end of the inner cavity of the upper connector (1), a disc spring (6) sleeves the lining pipe (2), a nozzle (5) is mounted in the concave platform in the middle of the middle of the upper end of the lower connector (4), and the upper end ofthe lower end of the disc spring (6) abut against the upper end face of the inner cavity of the upper connector (1) and the upper end face of the lower connector (4) respectively. According to the disc spring type axial vibration acceleration tool, the drilling pressure can be effectively applied to the drill bit, the mechanical drilling speed is improved, and stable drilling is facilitated.