36741results about How to "Improve sealing" patented technology

The invention discloses a water pressure testing device for steel pipe compression resistance detection and a testing method thereof.The device comprises a supporting assembly, a moving assembly and a fixed sealing assembly, the supporting assembly comprises a base and a pair of supporting frames fixedly connected with the top of the base, and the moving assembly is arranged above the base; the moving assembly is arranged on the base and fixedly connected with the base, and the fixed sealing assembly is connected with the moving assembly, used for fixing the steel pipe and capable of sealing the two ends of the steel pipe. The driving motor drives the positive and negative screw rod to rotate, so that the pair of moving plates move in opposite directions, the abutting blocks can abut against the inner wall of the steel pipe in the opposite moving process of the moving plates, the steel pipe can be stabilized through the abutting effect of the abutting blocks, the displacement phenomenon of the steel pipe during water pressure testing is avoided, and when the moving plates move, the steel pipe is prevented from moving. The steel pipe can be subjected to double-layer sealing, the sealing effect is good, and the accuracy of a test result can be improved.

The invention provides a multi-sealing method and system for a high-vacuum die-casting die based on topological optimization, and relates to the technical field of die structures.The multi-sealing method comprises the steps that a sealing structure parameterized model is established, geometric parameters and boundary conditions of a cavity wall face are obtained, an initial design domain is constructed, and grid units are divided; carrying out topological optimization calculation based on a multi-objective function considering contact stress distribution, and iteratively optimizing the relative density of grid cells by adopting an SIMP method; and according to the obtained topological configuration of the sealing structure, multiple sealing structure design is carried out, a three-dimensional entity model is constructed, and the sealing performance is verified through finite element analysis.

The invention belongs to the technical field of magnetofluid sealing in mechanical engineering, and particularly relates to a magnetofluid sealing device based on a labyrinth tower shape, the magnetofluid sealing device is applied to a main shaft, the magnetofluid sealing device comprises a shell assembly and a magnetofluid sealing assembly, and the shell assembly comprises a first sealing shell and an end cover; the magnetic fluid sealing assembly comprises a main shaft sleeve, a pole shoe set and a permanent magnet, a labyrinth tower-shaped sealing structure is formed between the pole shoe set and the main shaft, and the good sealing effect can still be achieved under the working conditions of large shaft diameter, high pressure and high speed; in addition, the invention further provides a sealing performance test bench for the magnetofluid sealing device based on the labyrinth tower shape, on the basis that the main shaft driving assembly is used for providing rotating speed and torque for the main shaft and the pressurizing assembly is used for providing constant pressure for the sealing device, the sealing performance of the magnetofluid sealing device is tested in cooperation with the detection assembly under the working conditions of adjusting different rotating speeds, different pressures and the like. The sealing performance of the magnetofluid sealing device is tested in real time, and the method has important guiding significance on design and optimization of a sealing gap structure.

The invention discloses a battery, a battery module and electric equipment. The battery comprises a shell, an electrode assembly, an end cover, an anti-explosion sheet and a protective layer, the housing has a housing opening. The electrode assembly is housed within the case. The end cover is connected to the shell and covers the opening of the shell. The anti-explosion piece is arranged on the end cover. The protection layer is connected to the surface of the explosion-proof sheet, and at least part of the protection layer is arranged on the side, back to the electrode assembly, of the explosion-proof sheet. And the protective layer can prevent external liquid or other impurities from directly contacting at least part of the explosion-proof sheet, so that the possibility that the explosion-proof sheet is corroded and damaged is reduced, the sealing performance of the battery is improved, the electrolyte leakage risk is reduced, and the reliability and safety performance of the battery are improved.

The invention discloses a thin mutual coal seam fracturing, gasification and carbon sequestration integrated method. The method comprises the steps of geological exploration and coal seam refined evaluation; a middle horizontal well is drilled downwards from the ground; top and bottom horizontal wells are planned and drilled in the uppermost and lower sandstone stratums of the thin mutual coal seam; a plurality of top and bottom fishbone wells are drilled obliquely downwards and upwards in the top and bottom horizontal wells; oxygen-enriched water vapor is injected into the middle horizontal well through a continuous oil pipe, the oxygen-enriched water vapor is squeezed into the reservoir under the action of high pressure, and fracturing operation is conducted; initiating an underground gasification process of the coal seam, and synchronously performing extraction operation of the coal seam gas; supercritical CO2 fracturing operation is conducted on the top horizontal well and the bottom horizontal well; injecting water-based fracturing fluid into the top horizontal well and the bottom horizontal well; gasified materials generated by coal seam combustion gasification and desorbed methane gas are extracted through the middle horizontal well, and supercritical carbon dioxide injected before is sealed for a long time. According to the method, the limitation of a traditional hydraulic fracturing technology can be solved, and the transformation effect of the reservoir can be improved.

The invention relates to the technical field of metal sliding bearings, and provides a liquid metal sliding bearing with high sealing performance, which comprises a mandrel, a graphite sealing assembly, a flange and a shaft sleeve, and further comprises a ternary gallium-based liquid metal and a silicon carbide ceramic coating, wave-shaped check rings are arranged among the multiple graphite rings at intervals, initial contact loads are provided through the wave-shaped check rings, the graphite rings and the flange are tightly attached, static sealing with excellent performance is formed in the static state, and the fit clearance between the mandrel and the shaft sleeve is filled with ternary gallium-based liquid metal. A silicon carbide ceramic coating is plated at the matching position of the mandrel and the flange, and a silicon carbide ceramic coating is also plated at the matching position of the mandrel and the shaft sleeve. By using the graphite ring, the ternary gallium-based liquid metal and the silicon carbide ceramic coating, the liquid metal has good fluidity, so that the interface can be fully filled, the liquid metal is not easy to volatilize, the lubricating effect is better, the friction factor is low, and the wear resistance is better.

The invention provides a rigidity valve which comprises fixed iron, a valve element and a valve seat. The valve core is sleeved in the fixed iron and the valve seat; the valve element can move in the axial direction relative to the fixed iron and the valve seat so as to selectively open or close a valve port in the valve seat. The stress areas of the upper surface and the lower surface of the valve element are equal, so that the upward gas pressure and the downward gas pressure borne by the valve element are equal. Through the configuration, the operation comfort and the response speed of the rigidity valve are improved, meanwhile, the sealing performance is improved, and the sealing stability is improved.

The invention discloses a longitudinal waterproof cable and a production process, and relates to the technical field of cables, the longitudinal waterproof cable comprises a cable body, the cable body comprises a cable core, a belting layer is arranged outside the cable core, a gap between the belting layer and the cable core is filled with water-blocking powder, an inner lining layer is arranged outside the belting layer, and the inner lining layer is filled with water-blocking powder. The outer portion of the inner lining layer is provided with an aluminum-plastic composite belt, the outer portion of the aluminum-plastic composite belt is provided with an outer sheath, the end portion of the outer sheath is provided with a sealing assembly, the sealing assembly is used for sealing the end portion of the cable body, and the outer sheath is sleeved with a protection assembly. The protection assembly is used for protecting the outer sheath, and the sealing assembly is matched with the protection assembly to seal the joint between the two adjacent cable bodies. The cable sheath can be effectively protected, corrosion and aging are delayed, the waterproof effect of the end of the cable is effectively improved, and water is prevented from invading from the end of the cable.

The gas purification device comprises an outer barrel, an adjusting groove is formed in the outer barrel, an adsorbent box is slidably connected into the adjusting groove, the bottom end of the adsorbent box and the bottom end in the adjusting groove are magnetically adsorbed, a jacking device for automatically adjusting the height of the adsorbent box is arranged in the outer barrel, and a discharging opening is formed in the side end of the outer barrel in a penetrating mode; the discharging port is in through connection with the adjusting groove, a mounting groove is formed in the discharging port, and a baffle for preventing the adsorbent in the adsorbent box from being discharged from the discharging port is slidably inserted into the mounting groove; through the synergistic effect of an ejector rod and a first spring in the jacking device, the height of the adsorbent box can be automatically adjusted according to the weight of an adsorbent in the adsorbent box, it is ensured that the adsorbent box is located at the optimal working height all the time, and through linkage of the ejector rod and an elastic rope, automatic opening and closing of a baffle are achieved, and adsorbent leakage is prevented; according to the automatic control system, the operation process is simplified, and the automation degree of the system is improved.

The invention relates to an energy-saving enthalpy difference test room, which comprises two adjacent rooms, namely an indoor environment simulation room and an outdoor environment simulation room, and further comprises an indoor air handling unit, an outdoor air handling unit and an indoor and outdoor air exchange unit, the outdoor environment simulation chamber is used for placing an outdoor unit of an air conditioner to be tested, the indoor air processing unit is installed in the indoor environment simulation chamber and can adjust the temperature of the indoor environment simulation chamber, and the outdoor air processing unit is installed in the outdoor environment simulation chamber and can adjust the temperature of the outdoor environment simulation chamber. The indoor and outdoor air exchange unit is communicated with the indoor environment simulation chamber and the outdoor environment simulation chamber, and cold / hot air generated by the indoor unit of the tested machine can be introduced into the outdoor environment simulation chamber.

The invention belongs to the technical field of optical cable sealing, and particularly discloses an optical cable end sealing structure and a hollow-core optical fiber cable, and the optical cable end sealing structure comprises a sealing seat which is used for sleeving and being connected to the circumferential surface of the optical cable; the sealing ring is used for sleeving and sealing the circumferential surface of the optical cable; the sealing cover is provided with a stepped blind hole, one end, provided with the stepped blind hole, of the sealing cover is used for being in threaded connection with the sealing seat along the axial direction so as to enable the sealing ring to spirally abut against the sealing seat, and the sealing cover, the sealing ring and the optical cable are used for defining a sealing cavity for sealing the end of the optical cable. The stepped blind hole of the sealing cover is used for containing the end face structure of the optical cable in a non-contact mode. The optical cable end sealing structure can stably protect the end part of the optical cable for a long time, and the optical cable end sealing structure is not easy to be punctured and poked off by a reinforcing member which may protrude in the optical cable.

The rotary cross-flow ceramic membrane filtering device comprises a shell, a main shaft unit arranged in the shell and a power unit for driving the main shaft unit to rotate, the power unit provides rotating power for the main shaft unit and drives the filtering disc to rotate, the main shaft unit is installed in the shell and executes a specific filtering task, and the shell provides necessary support and protection for the main shaft unit and the power unit and controls inflow and outflow of materials. According to the rotary cross-flow ceramic membrane filtering device provided by the invention, the ceramic membrane filtering disc is arranged, so that the filtering efficiency and the system stability are improved, the operation cost is reduced, and the rotary cross-flow ceramic membrane filtering device is suitable for being widely applied to various industrial fields needing efficient filtering solutions.

The invention relates to a low-noise water purifier. The water purifier includes a shell, an integrated waterway plate and booster pumps. The integrated waterway plate is fixed to the shell and is connected to water outlets of the booster pumps through pressure stabilizing tanks. The pressure stabilizing tanks are disposed between the booster pumps and the integrated waterway plate. The integrated waterway plate is connected to a plurality of evenly arranged connection tubes and is connected to filter core base assemblies through the connection tubes in a one-one correspondence manner. Beneficial effects of the water purifier are that 1) water knocking abnormal sound of the water purifier is reduced, thus improving user experience, 2) the structure is simple, water leakage is prevented and the production efficiency is high, and 3) replacement of a consumable of the product is simpler and more convenient.

The invention relates to the technical field of metal bearings, in particular to a reinforced liquid metal sliding bearing. The enhanced liquid metal sliding bearing comprises a rotor, a stator and liquid metal filled in an assembling gap between the rotor and the stator. The fixed positions of the rotor and the stator are provided with a spiral groove structure, a textured microstructure, an infiltration coating and a sealing coating. By adopting the enhanced liquid metal sliding bearing provided by the invention, the wettability and the wear resistance of a bearing rotating pair can be improved, and the problems of coating falling, wear, poor lubrication and the like of the enhanced liquid metal sliding bearing in a high-vacuum, high-temperature, high-pressure, high-speed and high-load use environment are effectively solved. High-pressure sealing is formed on the gaps between the stator and the rotor and between the limiting rings of the stator and the rotor, the liquid metal is kept in the bearing, the assembled bearing does not need a vacuum environment in the transfer process, meanwhile, external gas is prevented from entering the bearing structure, and the possibility that the liquid metal leaks or gets stuck is reduced.

The invention provides a normally-open large-flow switching electromagnetic valve and a hydraulic control unit of an automobile braking system. The electromagnetic valve comprises an electromagnetic coil, a valve shell, moving iron, a valve element, a small-flow valve seat and a large-flow valve seat. A containing space is formed in the valve shell, a valve element, a small-flow valve seat and a large-flow valve seat are sequentially arranged in the containing space from top to bottom, the valve element is connected with the moving iron, the electromagnetic coil is arranged around the moving iron and the valve shell, a first elastic piece is arranged between the valve element and the small-flow valve seat, and the small-flow valve seat is connected with the large-flow valve seat through a second elastic piece. When the electromagnetic coil is powered off, the valve element opens the small-flow opening, and the small-flow valve seat opens the large-flow opening, so that the electromagnetic valve is opened with large flow. When the electromagnetic coil is powered on, the valve element seals the small-flow opening, and the small-flow valve seat seals the large-flow opening, so that the electromagnetic valve is closed. The electromagnetic valve can meet the requirement that an oil inlet and an oil outlet of the electromagnetic valve are normally opened and keep high overflowing capacity, and therefore pressure can be rapidly regulated and controlled.

The machining tool comprises a base and a clamping device arranged on the base, the clamping device comprises clamping units arranged on the periphery of a workpiece to be machined, and a base for fixing the clamping units is arranged on the base; the clamping unit comprises a box body fixed to the base and an air cylinder arranged on the side, away from a workpiece, of the box body, and a plurality of ejector rod mechanisms pushed by the air cylinder are arranged on the side, close to the workpiece, of the box body. The ejector rod mechanism is of a two-section type and comprises a piston in the middle and a piston rod close to one side of a workpiece, a first cavity is formed between the piston and the piston rod, electrorheological fluid is arranged in the first cavity, and an electrode is arranged on the inner wall of the first cavity; according to the novel machining tool, a workpiece in a complex shape can be clamped through the telescopic ejector rod mechanism, meanwhile, the electrorheological fluid in the first cavity and the electrorheological fluid in the second cavity can be converted into a solid state, stable supporting can be provided, and vibration during machining can be reduced through control of the controller.

The utility model provides a fluid supply cup which comprises a rigid outer cup and a cup cover which are matched with each other, a plurality of locking slots are formed in the inner circumference of a cup opening of the rigid outer cup, a plurality of clamping elements are correspondingly arranged on the outer edge of the cup cover, and the clamping elements can be guided into the corresponding locking slots to enable the rigid outer cup to be connected with the cup cover. An anti-falling structure is arranged between the clamping element and the corresponding locking groove gap, the clamping element is screwed into the locking groove gap, the clamping element is gradually transited to the locking matching area from the clearance fit area, and the damping force of the anti-falling structure is matched in the clearance fit area. Limiting matching and locking matching of the clamping element and the locking groove gap are separately arranged, the sequential and ordered matching mode is achieved, when the clamping element is screwed out of the locking groove gap, screwing force overcomes wedge-shaped locking force of a thread structure firstly and then overcomes stopping force of an anti-falling structure, and therefore the problem that disassembly and assembly are difficult due to the fact that the clamping element and the locking groove gap face two kinds of composite resistance at the same time can be avoided; and the problem that the outer cup is easily separated from the cup cover can be avoided.

The invention relates to a double-flexible-support pendulum type all-quartz resonant accelerometer and an assembly method thereof, the accelerometer comprises a sensitive mass block structure composed of a mass block, mass block flexible supports and stress isolation areas, an upper resonant beam is connected above the mass block, and a lower resonant beam is connected below the mass block; a lower limiting plate is connected below the sensitive mass block structure, and the lower part of the lower limiting plate is connected to the mounting base; an upper limiting plate and a lower limiting plate are connected above the sensitive mass block structure, and the sensitive mass block structure and the upper limiting plate penetrate through the positioning binding post; the outer sides of the lower limiting plate, the sensitive mass block structure and the upper limiting plate are provided with a shell, and the shell is connected to the mounting base; the upper resonant beam and the lower resonant beam are electrically connected with a resonant circuit in the mounting base through positioning binding posts, and signals are transmitted to the resonant circuit; according to the invention, the environmental adaptability of the accelerometer is improved, the temperature characteristic of the accelerometer is reduced, the volume of the accelerometer is reduced, and the accelerometer adapts to the miniaturization and high-precision development trend of an inertial navigation system.

The invention discloses a pipeline pressure relief structure and a pressure relief valve with the pressure relief structure, and relates to the field of pressure relief valves, the pipeline pressure relief structure comprises a main valve, a tower-shaped valve core, a pressure gauge, an amplification gear and a labor-saving lever, and changes the situation that in the prior art, precision of a pilot valve is adjusted through a needle valve, and the needle valve and the pilot valve need to continuously play a sensing role through similar structures such as springs; a tower-shaped valve element is arranged in a main valve to conduct multi-section control over flow, then driving force on the tower-shaped valve element is amplified in a multiplied mode through a hinge rod, an amplification gear and a labor-saving lever, accurate adjustment of the tower-shaped valve element is guaranteed, and the control precision of equipment is guaranteed. In addition, the pressure gauge is connected in the pilot valve through the oil bag, and the carry block facilitating adjustment of the elastic force of the piston by the spring is arranged, so that the pilot valve can be calibrated according to the display of the pressure gauge and the flow change of the main valve, the service life of the pressure relief valve structure is prolonged, and more accurate adjustment and use of the pressure relief structure are ensured.

The invention provides an automatic judgment device for a safety valve and a verification method, and relates to the technical field of safety valve verification. The automatic judgment device comprises clamping seats which are provided with an air inlet valve and a pressure release valve, are arranged at intervals along a first horizontal direction and are used for fixing a safety valve to be tested, the translation assembly comprises a connecting piece, and the end part of the connecting piece is provided with a sealing plate matched with the safety valve to be tested for sealing; the reversing valve is arranged to be communicated with an outlet of the safety valve to be tested and alternatively communicated with the flow sensor or the bubble meter, and the adjusting piece of the adjusting assembly is arranged to drive the sealing plate to adjust the preset angle until the sealing plate is sealed with the safety valve to be tested, and the limiting piece is controlled to move to abut against the sealing plate. The first driving mechanism is arranged to drive the sealing plate to move to selectively seal the safety valve to be tested so as to verify the setting pressure or the sealing performance of the safety valve to be tested. According to the automatic judgment device, the angle of the sealing plate can be adjusted, so that the sealing performance is improved, and the stability of the sealing plate is guaranteed.

The utility model discloses a corrosion-resistant metal lining socket type multilayer pipe, which belongs to the technical field of pipes and comprises an inner pipe, a middle layer and an outer pipe which are sequentially sleeved from inside to outside, steps and / or grooves are arranged on the inner wall of a socket end, and the inner pipe, the middle layer and the outer pipe are adhered to form the pipe or compressed to form the pipe. The outer pipe comprises a socket end, a pipe body and a spigot end which are connected in sequence, the outer pipe is made of metal, the inner pipe is made of a corrosion-resistant material, each end of the pipe is provided with a sealing layer and a lining ring made of a corrosion-resistant metal material, and the length of each lining ring extending into the pipe is not less than 20mm. The anti-corrosion pipeline is good in anti-corrosion effect, and the water conveying efficiency of the pipeline is improved. The corrosion-resistant metal lining ring prevents each layer of material from being stripped; and the strength and the deformation resistance of the pipe are improved.

The invention discloses a hydrogen fuel cell unmanned aerial vehicle hydrogen cylinder positioning device which comprises a front fixing plate, a rear fixing plate is installed on the rear portion of the front fixing plate through a connecting rod, a tightening sliding groove is formed in the surface of the front fixing plate, and a tightening sliding bolt is embedded in the tightening sliding groove. A tightening supporting rod is installed below the tightening sliding bolt through a bolt, a tightening sliding plate is slightly attached to the outer side of the tightening supporting rod, a tightening sliding plate is installed on the inner surface of the rear fixing plate through a tightening supporting block, a tightening protection plate is welded to one end of the tightening supporting rod, and a tightening wheel is installed in the tightening protection plate through a bearing; an adjusting sliding groove is formed in the surface of the front fixing plate, and an adjusting moving bolt is embedded in the adjusting sliding groove. By means of the supporting legs, the hydrogen cylinder support, the gas guide structure and the downward pressing top seat, the problems that according to an existing hydrogen fuel cell unmanned aerial vehicle hydrogen cylinder positioning device, the hydrogen cylinder is still installed at the upper position, the flight stability of an unmanned aerial vehicle is likely to be affected, the hydrogen cylinder is unstable after being installed and likely to shake in the flight process, and the unmanned aerial vehicle cannot work easily are solved. And rapid mounting and dismounting are not convenient.

The invention provides a coaxial connector, and relates to the technical field of electric connectors, the coaxial connector comprises a female head, a male head and a filling member, one end of the female head is provided with a plugging groove, the male head is plugged in the plugging groove, a plugging gap is arranged between the peripheral surface of the male head and the groove side wall of the plugging groove, the filling member is arranged in the plugging gap, and the filling volume is variable. The filling part is arranged in the insertion gap and has an expanded state and a contracted state, the filling volume of the filling part in the expanded state is larger than the filling volume of the filling part in the contracted state, the peripheral surface of the filling part abuts against the wall surface of the insertion gap in a sealed mode in the expanded state, and a gap exists between the peripheral surface of the filling part and the wall surface of the insertion gap in the contracted state. According to the invention, the sealing performance when the male head and the female head are plugged can be ensured, so that the signal transmission efficiency is improved.

The invention discloses rock crushing and coring equipment for geotechnical engineering investigation, and belongs to the technical field of drilling equipment. The rock crushing and coring equipment for geotechnical engineering investigation comprises a drilling tool, a sampling barrel and a high-pressure water supply device, and further comprises a triggering part, a coring part and a control part, and the triggering part is arranged at the end, away from a drill bit of the drilling tool, of the sampling barrel; a first sliding groove is formed in the water flow reversing part, the high-pressure water supply device communicates with a water outlet in the drill bit through the water flow reversing part, the water flow reversing part communicates with the first sliding groove, and the water flow reversing part is used for communicating the high-pressure water supply device with the first sliding groove when the triggering part is triggered; one end of the sliding sleeve is hermetically and slidably connected into the first sliding groove; the cut-off part is connected with the other end of the sliding sleeve, and when high-pressure water is introduced into the first sliding groove, the sliding sleeve drives the cut-off part to move into the sampling barrel. According to the rock crushing and coring equipment for geotechnical engineering investigation, the drill bit can be cooled by using high-pressure water, the abrasion of the drill bit is reduced, and a rock core is cut off by using the high-pressure water as power, so that the integrity of the obtained rock core can be ensured.

The invention discloses a long-distance high-pressure water delivery pipeline water hammer and leakage monitoring and positioning test device, which comprises a water tank, a water outlet side experiment unit, a water return side main path experiment unit and a water return side branch experiment unit, and is characterized in that the water outlet side experiment unit and the water return side branch experiment unit are communicated with the water return side main path experiment unit; the water outlet side experiment unit, the water return side main path experiment unit and the water return side branch path experiment unit are all communicated with the water tank. The device solves the problem that tiny leakage is difficult to monitor in the high-pressure water delivery process in the existing related test experiment technology, and the problems that the water hammer experiment signal precision acquisition is insufficient and the water hammer experiment causes impact damage to equipment. The invention further discloses a using method of the long-distance high-pressure water conveying pipeline water hammer and leakage monitoring and positioning testing device.

The invention relates to the technical field of toxic gas monitoring, in particular to a limited space operation environment gas monitoring device which comprises a shell, a controller and an audible and visual alarm, a gas cavity is formed in the shell, a pushing assembly, a detection assembly and a sealing assembly are arranged in the shell, and the pushing assembly comprises an air cylinder, a through hole and a pushing plate; the detection assembly comprises a servo motor and a rotating disc, a plurality of air storage cylinders are arranged on the circumference of the rotating disc, harmful gas sensors are arranged in the air storage cylinders, the sealing assembly comprises a mounting plate and a water through hole, a micro motor, a baffle a and a baffle b are arranged in the mounting plate, an air inlet and a water inlet are formed in the mounting plate, and a piston is arranged in the water through hole. The air cylinder drives the push plate to push air in the air cavity into the air storage cylinder to be detected through the harmful gas sensor, when the push plate descends, the micro motor drives the baffle a and the baffle b to seal the air inlet, and meanwhile, the piston squeezes water in the water through hole into the position between the baffle a and the baffle b to be further sealed, so that the detection result is more accurate.

The utility model discloses a hollow glass winding device, relates to the technical field of hollow glass winding, and aims to solve the problems that a traditional hollow glass winding device needs to position the starting point of an adhesive tape for the second time after completing primary winding, and meanwhile, a warm edge adhesive tape subjected to winding is easy to distort and deform and the radian of a corner is too large. The glass feeding device comprises a glass carrying frame, a movement mechanism used for driving glass to move horizontally is installed on the glass carrying frame, a fixing column is further connected to the surface of the side, provided with the movement mechanism, of the glass carrying frame, a machine head is connected to the fixing column in a sliding mode, and a strip feeding mechanism is further arranged on the outer side of the glass carrying frame. A guide wheel set, a transmission wheel, a pressing mechanism and a cutter are installed at the end, close to the glass carrying frame, of the machine head, the pressing mechanism is arranged on the side, away from the guide wheel set, of the transmission wheel, and the cutter is arranged on the side, away from the transmission wheel, of the pressing mechanism.

The utility model discloses a battery and a power utilization device, the battery comprises a box body assembly, a battery monomer and a heat exchange assembly, the box body assembly comprises a box body and an expansion beam, the expansion beam is arranged in the box body, the battery monomer is arranged in the box body and abuts against the expansion beam, and the heat exchange assembly comprises a first heat exchange piece; the first heat exchange piece is arranged in the box body and located between the battery monomers and the box body, the first heat exchange piece is used for exchanging heat with the battery monomers, and the first heat exchange piece and the expansion beam are arranged at intervals, so that the first heat exchange piece and the expansion beam are arranged in a heat insulation mode. According to the battery provided by the embodiment of the invention, the loss of heat or cold of the first heat exchange piece can be reduced, and the heat management performance is improved.

The invention provides a sealing ring performance test system and method. The sealing ring performance test system provided by the invention comprises a test tool which comprises an upper flange and a lower flange which are matched with each other, the lower flange is provided with a sealing groove and a leak detection hole communicated with the sealing groove, the sealing groove is formed in one side, facing the upper flange, of the lower flange and is used for installing a sealing ring to be tested, and the leak detection hole is communicated with the leak detection hole; one end of the leak detection hole is communicated with the sealing groove, the other end of the leak detection hole is used for detachably installing different performance testing devices, and the different performance testing devices comprise a cold and hot state leakage performance testing device, a water pressure performance testing device, a thermal cycle testing device and a stress relaxation testing device. The system and the method provided by the invention are used for testing the performance of the sealing ring and ensuring the sealing effect and the reliability of the sealing ring under the actual working condition.

The invention discloses sample acquisition equipment for cross-linking agent processing, and belongs to the technical field of cross-linking agent production equipment.The sample acquisition equipment comprises a workbench, a stirring barrel is fixedly installed on the top wall of the workbench, and a motor is fixedly installed on the top wall of the stirring barrel. According to the scheme, through cooperation of the sampling box and the sealing plate, during sampling, a user can drive the sampling box to enter the stirring barrel through the vertical rod and the mounting box for sampling, and after sampling is finished, the user drives the sampling box to move towards the outside of the stirring barrel through the vertical rod and the mounting box and takes out the sampling box filled with a cross-linking agent to complete sampling; meanwhile, when the sampling box is taken out, the elastic cushion extends and drives the sealing plate to seal the sampling box through the linkage plate, so that the sample is prevented from being scattered, and the situation that the sample is oxidized due to long-time contact with air and the accuracy of the sample is influenced is effectively prevented; the effect of improving the sample accuracy is achieved.