1029 results about "Pressure resistance" patented technology

The present invention discloses a testing device for a rubber water stop joint, which relates to the technical field of rubber water stop joints; in order to improve the detection efficiency; specifically, it includes a base, a supporting part and a testing part for performing a pressure test on the main body of the water stop joint. The testing part includes: a bracket: which is fixed on the outer wall of the top of the base, and a piston cylinder is fixed on the outer wall of the top of the bracket, and a filling pipe and an adjusting pipe are respectively welded on the circumferential outer wall of the piston cylinder; a piston plate: which is movably connected to the inner wall of the circumferential wall of the piston cylinder. In the present invention, by providing a driving plate, the bending seat can be driven to rotate, so that the top of the main body of the water stop joint can be twisted by the rotation of the bending seat, so that the anti-twisting performance of the bending seat can be tested. At the same time, by using the first kidney-shaped hole, the circumferential movement of the driving plate can be converted into the linear movement of the ejector rod, and the ejector rod can be used to drive the piston plate to move downward, so as to test the pressure resistance performance of the main body of the water stop joint.

The invention discloses a petroleum pipeline compression resistance detection experiment mechanism, and relates to the technical field of compression resistance detection of novel pipeline materials, the petroleum pipeline compression resistance detection experiment mechanism comprises a workbench, the upper surface of the workbench is fixedly connected with a hydraulic rod, and the output end of the hydraulic rod is fixedly connected with a pressure detection plate; and a working rod is arranged above the side of the pressure detection plate and above the workbench in a nested connection manner. According to the petroleum pipeline pressure resistance detection experiment mechanism, a first air bag can be deformed through movement of an extrusion plate, the inner side and the outer side of a pipeline can be sealed through an expanded fixed air bag, the phenomenon of gas leakage is avoided when internal pressure detection is conducted on the pipeline subsequently, an air compressor supplies air to the interior of a rotating rod through an air supply hose, and the pressure resistance of the pipeline is improved. Therefore, gas is conveyed into the pipeline from the first nozzle and the auxiliary nozzle, gas supply treatment is conducted on different directions in the pipeline, and real-time quantitative evaluation of the internal pressure bearing capacity of the pipeline can be achieved by observing the deformation condition of the pipeline and the gas supply numerical value of the air compressor.

The invention relates to the field of pressure resistance detection of a heating pipeline connection leakage-proof structure, in particular to pressure resistance performance testing equipment for a heating pipeline connection leakage-proof structure. The invention provides a heating pipeline connection leakage-proof structure pressure-resistant performance test device which comprises a box body, a valve is installed on the side wall of the box body, a placing frame is fixedly connected to the top of the box body, a water pump is installed on the box body, a water inlet pipe of the water pump extends into the box body, and a water outlet pipe of the water pump penetrates out of the placing frame. The side, close to the water pump, of the containing frame is rotationally connected with symmetrically-distributed rotating shafts. Synchronous action is achieved through the transmission assembly and the self-locking gear set, it is ensured that a pipeline is firmly fixed in a high-pressure test, and leakage or damage caused by infirm fixing is avoided; the position of the pipeline is accurately adjusted, accurate butt joint of water injection nozzles is guaranteed, the problem of poor centering performance of traditional equipment is solved, and personal errors are reduced; the automatic design significantly shortens the preparation time, improves the test efficiency, reduces the labor intensity and maintenance cost, and improves the detection precision and reliability.

The invention discloses a gas cylinder pressure resistance detection device and detection method, and relates to the technical field of gas cylinder detection. The gas cylinder pressure resistance detection device comprises a water pipe, the water pipe is used for being inserted into a gas cylinder and providing water needed by pressure resistance detection for the gas cylinder, at least two hard pipes are arranged on the periphery of the area, close to the lower end, of the water pipe, the upper ends of the hard pipes are connected with the water pipe through hinge joints, and the hard pipes are communicated with the water pipe through flexible pipes; the gas pipe is sleeved on the periphery of the water pipe, and the lower end of the gas pipe is inserted into the gas cylinder and is positioned in a bottleneck area of the gas cylinder; according to the gas cylinder pressure resistance detection device and detection method, the branch pipe, the stress pipe and the thrust mechanism are arranged, so that the branch pipe can be opened after entering the gas cylinder, and the branch pipe moves downwards in a vertically downward posture to be flush with the bottom surface of the gas cylinder after being opened to the maximum angle, and therefore, it is ensured that water can be thoroughly drained in a drainage stage, and the pressure resistance of the gas cylinder is improved. And water residues in the gas cylinder are greatly reduced.

The invention provides a double-layer combined air bag material for foundation pit dewatering well plugging and an intelligent preparation process, and belongs to the technical field of air bag materials for foundation pit plugging. Comprising an outer-layer air bag, an inner-layer air bag, an inflation system and a control system, the outer-layer air bag and the inner-layer air bag form a honeycomb type distribution structure, the outer-layer air bag wraps the inner-layer air bag, and the contact face of the outer-layer air bag and the inner-layer air bag is of a curved surface attaching structure; the surface of the inner-layer air bag is coated with a waterproof sealing layer, the inflation system and the control system are arranged on one side of the outer-layer air bag, and the control system is electrically connected with the inflation system. By means of the double-layer combined air bag structure and the inflation control system, the problems that a traditional single-layer air bag is insufficient in pressure resistance, prone to deformation and leakage, poor in environmental adaptability and lack of real-time monitoring and adjusting in foundation pit dewatering well plugging are solved, and the stable, lasting and intelligent plugging effect still can be kept in the complex environment of the foundation pit dewatering well.

The invention discloses a novel motor shell material compression resistance test bench, which comprises a base, a bottom plate is fixed on the top of the base, and a radial shrinkage extrusion test mechanism is arranged on the bottom plate and is used for testing the compression resistance of the side surface of the motor shell material; the radial shrinkage and extrusion testing mechanism comprises a disc fixed to the top of the bottom plate. The invention relates to the technical field of material testing equipment. According to the novel compression resistance test bench for the motor shell material, through the arrangement of the radial shrinkage extrusion test mechanism, the motor shell material is radially shrunk and extruded by utilizing four extrusion arc plates, so that the multi-directional pressure test on the side surface of the motor shell material is realized; compared with a traditional pressure testing device which can only conduct pressure testing on the motor shell material in the vertical direction, the testing device does not need to frequently adjust the position of the motor shell material, the testing efficiency is greatly improved, and errors generated by manual operation are also avoided.

The invention relates to the technical field of steel pipe production, and particularly discloses a production process of a seamless steel pipe special for a high-temperature-resistant and high-pressure-resistant boiler. Under preset process parameters, a clamping mechanism is used for driving a steel billet to rotate and axially feed in, and the steel billet is symmetrically and synchronously beaten through a plurality of hammer heads, so that the steel billet is formed into a round billet; heating and perforating the round billet to obtain a pierced billet; and the pierced billet is sequentially fed into a hammerhead machine and a cold-drawing machine to be subjected to heading and drawing so as to conduct sizing on the steel pipe. The steel pipe is produced by combining a hammering forging mode with a perforating mode, and a plurality of synchronous symmetrical hammers are used for hammering, so that dynamic recrystallization and grain refinement are realized, the compactness of a steel pipe material is improved, and the high-temperature resistance and the pressure resistance of the steel pipe are improved; the circular-arc-shaped hammer head is adopted to be matched with the curvature of the steel billet, stress concentration is avoided, one-time circle forging, punching and sizing of the steel billet are achieved, the advantage of procedure integration is achieved, and the production efficiency is improved.

The invention relates to the technical field of detection equipment, in particular to a pressure resistance detection device for cement prefabricated slab production, which comprises a base, a lifting mechanism is arranged at the top of the base, a mounting cylinder is connected to the lifting mechanism, a connecting rod is slidably arranged at the lower part in the mounting cylinder, a universal ball I is connected to the bottom end of the connecting rod, and a pressure applying head is connected to the universal ball I. The driving assembly can drive the annular pressing blocks from inside to outside to move downwards in sequence, so that the bottom faces of the annular pressing blocks from inside to outside are flush with the bottom face of the annular pressing block at the innermost end, and the pressure applying area is increased; meanwhile, the annular pressing blocks from outside to inside can be driven to move upwards in sequence, so that the pressure application area is reduced, the effect of flexibly adjusting the pressure application area is achieved, the complex stress condition possibly occurring in engineering is simulated, and the detection accuracy is improved.

The utility model discloses a pressure resistance detection mechanism for a pressure pipeline of special equipment. The pressure resistance detection mechanism comprises a supporting assembly, an adjusting module and a clamping module, the clamping module comprises a lead screw groove, two sliding blocks are arranged in the lead screw groove, and the two ends of the inner side of the lead screw groove are movably connected with one ends of two-way lead screws respectively. The two sealing caps are moved to the height flush with the pressure pipeline through the adjusting module, the two sealing caps are close to each other through the clamping module, so that the pressure pipeline is clamped by the two sealing caps, the pressure pipeline and the two sealing caps form a relatively closed space, an external air pump is opened, and the pressure pipeline is sealed. Peripheral air enters the valve and the pressure pipeline through the air pump, the numerical value of the barometer is observed at the same time, when the barometer reaches a certain numerical value, the external air pump is closed, waiting is conducted for a period of time, the numerical value of the barometer is observed again, the numerical value at the moment is compared with the numerical value of the last time, and the anti-pressure capacity of the pressure pipeline is obtained.

The invention belongs to the related technical field of pressure tests, and particularly discloses a gas inlet pipeline test device for a gas generator, which comprises a first base and a second base, a round frame is fixedly mounted on one side of the upper end surface of the first base, an annular pipe is embedded in the round frame, and a connecting rod is mounted at one end in the annular pipe through an arranged telescopic mechanism. The outer side of the connecting rod is externally connected with a ring rod through an inner chuck fixedly connected in a sleeving mode, a sealing rotating ring is arranged on the outer wall of one side of the round frame, a test air inlet pipe movably penetrates through the sealing rotating ring in a penetrating mode, and a particle feeding simulation mechanism is arranged at the end, away from the sealing rotating ring, of the test air inlet pipe. By simulating multi-field coupling environments such as pressure fluctuation, particle scouring and mechanical vibration under real working conditions, the problem that data deviation is large due to the fact that complex working conditions cannot be reproduced in a traditional test is solved, and precise detection and full-life-cycle evaluation of the performance such as wear resistance, pressure resistance and blockage resistance of the pipeline are achieved.

The utility model relates to a detection device, and provides a cable immersion pressure resistance detection device, which comprises a shell, a control platform, a cover plate, a water tank, a water injection pipe and the like, a control platform is arranged on the front side of the shell and composed of a control module, an instrument, a screen and the like, a cover plate is rotatably arranged on the upper portion of the shell, a water tank is arranged on the lower portion in the shell, a water injection pipe is arranged on the lower portion of the water tank, and the other end of the water injection pipe penetrates out of the shell. According to the utility model, a program is preset in the control module, when cables of different models are tested, test conditions are automatically matched according to set data, the data can be recorded and fed back in real time in a test stage, meanwhile, a closed test instrument is arranged, the test cables are separated from an operator in the test process, and the test efficiency is improved. And potential safety hazards during working are reduced.

The utility model relates to the technical field of plastic pipeline pressure testing, and discloses a plastic pipeline pressure testing device which comprises a test board, a pressure pump is fixedly connected to the top of the test board, a connecting pipe is fixedly connected to one side of the pressure pump, and a pressure gauge is fixedly connected to the outer surface of the connecting pipe and can clamp and seal the joint of the connecting pipe and a plastic pipeline. The situations that the detection result is inaccurate and the pressure resistance and the sealing performance of the pipeline cannot be truly reflected due to gas leakage of the plastic pipeline in the process that the pressure test device conveys gas for detection are avoided, so that the detection time is shortened, the detection cost is reduced, and different from a bayonet and bolt fixing mode in the prior art, the detection efficiency is improved. Manual intervention can be reduced, and the situation that the detection effect is affected by gas leakage due to looseness caused by the fact that a pipeline detection joint is impacted by conveyed gas due to immature operation technology or errors of workers is avoided.

The invention discloses a pressure-bearing performance detection method, and relates to the technical field of pressure-bearing performance detection, and the method comprises the following steps: S1, preparing a test rubber material into a strip shape; s2, pasting a plurality of test adhesive tapes on a regular polygonal detection bottom plate; s3, measuring the average thickness H1 of the test rubber strip; s4, release paper is attached to the test adhesive tape, the detection top plate is placed on the release paper, and the pressing block is placed in the middle of the top wall of the detection top plate; s5, placing the test rubber strip in a normal-temperature environment or a high-temperature environment, measuring the average thickness H2 of the test rubber strip after 6 hours, and measuring the average thickness H3 of the test rubber strip after the test rubber strip is placed in the normal-temperature environment for 1 hour; and S6, calculating the thickness reduction rate of the test rubber strip in the two states according to formulas (H1-H2) / H1 and (H1-H3) / H1. The pressure-bearing performance detection can be performed by using the detection bottom plate, the release paper, the detection top plate and the pressing block, so that the detection cost of the pressure-bearing performance detection of the door film adhesive is greatly reduced.

The present invention discloses a pressure resistance detection device for water meter production, which includes a base and two slide rails. The bottom ends of the slide rails are fixedly connected to the top end of the base. An upper pressing mechanism is arranged between the two slide rails. The upper pressing mechanism includes a movable beam. Both ends of the movable beam are fixedly connected with U-shaped rails, and the U-shaped rails are slidably connected with the slide rails. A pneumatic pressure assembly is arranged at the bottom end of the movable beam. In the present invention, by rotating the first screw rod, the first screw rod drives the flexible circular clamping plate to move up and down. When the first screw rods at both ends are rotated spirally downward and the middle first screw rod is rotated spirally upward, the flexible circular clamping plate has a large bending angle. When the first screw rods at both ends are rotated spirally upward and the middle first screw rod is rotated spirally downward, the flexible circular clamping plate has a small bending angle, so that the flexible circular clamping plate is adjusted to the shape suitable for the conical interface of the water meter, achieving the effect of fixing the interface of the water meter and improving the detection accuracy of pressure detection on the interface of the water meter.

The invention belongs to the technical field of metal sleeve forging stocks, and discloses a forging stock clamping device for a metal sleeve, which comprises a main body, a moving assembly and a clamping assembly, and further comprises a strengthening mechanism arranged on one side of the clamping assembly; wherein the reinforcing mechanism comprises a fixing cylinder fixedly connected to one side of the clamping assembly, a sliding plate is arranged in the fixing cylinder, and a reinforcing plate located outside the fixing cylinder is fixedly installed at one end of the sliding plate; a sliding plate is pushed to move, the sliding plate can push a reinforcing plate to make contact with the inner wall of the sleeve, then the strength of the sleeve can be improved, finally, a hydraulic cylinder is driven to make the reinforcing plate make contact with the inner wall of the sleeve, and the reinforcing plate and the inner wall of the sleeve form a tightly-attached mechanical supporting structure; and the overall compression resistance and deformation resistance of the sleeve are effectively improved, so that the structural damage that the surface of the sleeve is sunken due to mechanical vibration generated when the forging stock is clamped is avoided, and the quality of the forging stock is improved.

The utility model relates to ceramic ball pressure resistance detection equipment, which belongs to the technical field of ceramic ball detection equipment, and comprises a base, a top plate and a support stand column for connecting the base and the top plate, a hydraulic cylinder is arranged on the base, an adjusting screw rod is arranged on the top plate, a support circular truncated cone is fixed at the top of a piston rod of the hydraulic cylinder, and a mounting boss is arranged at the top of the support circular truncated cone. A replaceable supporting disc and a pressure-bearing disc are arranged above the mounting boss, an embedding groove for embedding the mounting concave table is formed in the bottom of the replaceable supporting disc, a supporting groove matched with the pressure-bearing disc is formed in the top of the replaceable supporting disc, a flexible protecting sleeve for protecting the piston rod is arranged on the outer side of the supporting circular table, and a detachable and replaceable pressing plate is arranged at the bottom of the adjusting lead screw. The pressure-bearing disc can be replaced independently when worn; the flexible protection sleeve can protect the piston rod of the hydraulic cylinder in the whole process, ceramic chippings and dust generated in the detection process are prevented from being attached to the surface of the piston rod or entering the hydraulic cylinder, and the service life of equipment is prolonged.

The valve device comprises a fixed valve plate, a movable valve plate and a driving part, the fixed valve plate comprises a flow channel opening, the movable valve plate is driven by the driving part to adjust the opening degree of the flow channel opening, a first protrusion is arranged on the side, close to the movable valve plate, of the fixed valve plate, and a first contact face is formed at the abutting position of the first protrusion and the movable valve plate; and on at least one position where the movable valve plate rotates relative to the fixed valve plate, the first contact surface surrounds and seals the opening of the runner opening. According to the valve device, the opening degree of the flow channel opening is adjusted through relative rotation of the movable valve plate and the fixed valve plate, the protruding structures are arranged on the fixed valve plate and / or the movable valve plate, the contact area of the fixed valve plate and the movable valve plate is effectively reduced, friction is reduced, the service life of equipment is prolonged, the good sealing effect can still be kept under the condition of the small contact area, and the service life of the equipment is prolonged. Quick opening and closing response of the valve are ensured, accurate control over the fluid flow is achieved, and the pressure resistance is improved.

The utility model relates to the technical field of compressed air energy storage, in particular to an adaptive deformation structure of a sealing layer of a gas storage chamber and the gas storage chamber, the adaptive deformation structure comprises the sealing layer, a concrete lining layer and an elastic filling piece, the sealing layer covers the inner surface of the concrete lining layer, and the elastic filling piece covers the inner surface of the concrete lining layer. The sealing layer protrudes in the direction away from the concrete lining layer, a deformation space is formed between the sealing layer and the concrete lining layer, and the deformation space is filled with the elastic filling piece. A plurality of first pressure-bearing holes are formed in the elastic filling piece, corrugated pipes are arranged in the first pressure-bearing holes in a penetrating mode, and the corrugated pipes are filled with first pressure-bearing media. A common straight pipe structure is improved into the corrugated pipe, the corrugated pipe is provided with the corrugated side wall structure and has higher pressure bearing performance compared with a straight pipe, in addition, the corrugated pipe can be filled with the first pressure bearing medium, and the pressure resistance of the corrugated pipe and the elastic filling piece can be further enhanced.

The utility model relates to the technical field of pressure test, and discloses a water-resistant sealing pressure test device, which comprises a pressure tank body, a tank cover, a fastener, a pressure gauge and a hydraulic press, the pressure tank body is provided with a tank opening, the tank cover is detachably arranged at the tank opening, and the fastener is connected between the tank cover and the pressure tank body; the pressure tank body or the tank cover is provided with a pressure measuring interface, and the pressure gauge is installed at the pressure measuring interface to detect the internal water pressure of the pressure tank body; a pressurizing opening is further formed in the pressure tank body or the tank cover, and a pressure pipeline is connected between the hydraulic press and the pressurizing opening; a threading sleeve is further arranged on the tank cover, a cable channel, an annular groove and a threaded section are arranged in the threading sleeve, the annular groove and the threaded section are located in the cable channel, a sealing rubber ring is arranged in the annular groove, a threaded pressing piece is installed on the threaded section, and the threaded pressing piece and the sealing rubber ring are in extrusion fit in the axis direction of the cable channel. Requirements of cable leading-out and voltage resistance testing are met, and the waterproof sealing performance of outboard electrical equipment and cable connection can be tested.

The invention discloses pipeline anti-pressure capability detection equipment, and relates to the field of pipeline detection, the pipeline anti-pressure capability detection equipment comprises an equipment main body, a sealing clamping mechanism is arranged on the outer wall of an adjusting frame, the sealing clamping mechanism comprises a moving seat slidably mounted on the outer wall of the adjusting frame, and a sealing end seat is fixedly mounted on the side wall of the moving seat; a pressurizing pipeline used for pressurizing the interior of the pipeline is arranged in the center of the sealing end seat, a sealing air bag and clamping assemblies distributed at equal angles are arranged on the inner wall of the sealing end seat, and a self-adaptive adjusting mechanism is arranged at the bottom of the adjusting frame. According to the pipeline anti-pressure capability detection equipment, sealing and clamping of the end of a pipeline are synchronously completed by arranging the sealing and clamping mechanism, the sealing performance and stability in the detection process are remarkably improved, and the problems of air leakage and displacement during pressurization in the pipeline are effectively prevented; and through the arrangement of the self-adaptive adjusting mechanism, rapid adaptation to pipelines with various pipe diameters is realized, and the universality and the detection efficiency of the equipment are greatly improved.

The invention relates to the technical field of PVC pipe detection, in particular to a PVC pipe compression resistance detection device which comprises a detection machine table, a lifting plate is slidably connected to the detection machine table, a pressure applying plate is installed on the lifting plate, a trigger plate is installed on the lower side of the pressure applying plate, and a bearing table used for bearing a plastic pipe is fixedly arranged on the detection machine table. A supporting rod is fixedly connected to the detection machine table, a contraction plate is connected to the supporting rod in a sliding mode, a lower spring is further arranged on the supporting rod in a sleeving mode, a positioning seat is fixedly connected to the contraction plate, the positioning seat upwards penetrates through a contraction hole in the bearing table, and a positioning rod used for limiting the plastic pipe is installed on the positioning seat. According to the device, the plastic pipe can be limited before detection, the plastic pipe is prevented from rolling during placement, the plastic pipe can be accurately placed in the middle position, the limiting of the plastic pipe can be canceled in time when detection is started, the natural change rule of the plastic pipe in the radial compression state is prevented from being influenced, and the detection accuracy is improved. And the accuracy of detection data is ensured.

The invention discloses an intelligent water pressure detection device and method based on seamless gas cylinder production, and relates to the technical field of seamless gas cylinder detection. A first arc-shaped sleeve and a second arc-shaped sleeve are arranged to be matched with a first arc-shaped block, a second arc-shaped block and a bearing cylinder, so that a relatively closed low-temperature test space and a relatively closed high-temperature test space can be formed by the first arc-shaped sleeve and the second arc-shaped sleeve in the seamless gas cylinder detection process; therefore, low-temperature and high-temperature states in a real use environment are simulated for the test process of the seamless gas cylinder, so that the body quality of the seamless gas cylinder can be detected at a real environment temperature. After the seamless gas cylinder is tested in a low-temperature environment or a high-temperature environment, the two gas cylinder clamping assemblies can exchange positions with each other, so that the compression resistance of the seamless gas cylinder in a large temperature difference environment can be detected, a different test environment is provided based on the low-temperature and high-temperature test environments, and the test efficiency of the seamless gas cylinder is improved. And the credibility of the test result of the seamless gas cylinder is further improved.

The utility model is applicable to the field of pipeline detection, and provides a pipeline pressure resistance detection device, which comprises a supporting assembly, an adjusting piece, two rotating assemblies, two clamping assemblies and a detection assembly, the supporting assembly comprises a base, the base is connected with a supporting frame, and the adjusting piece is connected in the base; the rotating assembly comprises movable frames, the two ends of the adjusting piece are connected with the movable frames, and the faces, away from each other, of the two movable frames are connected with a first motor. According to the pipeline detection device, the rotating assembly can drive the pipeline to rotate, and all positions of the pipeline in the circumferential direction and the axial direction can be comprehensively detected in cooperation with the axial movement of a detection head in the detection assembly; the pressure sensor at the bottom of the detection head can accurately detect the pressure change condition when the pipeline is pressed in real time, and the deformation condition of the pipeline can be accurately obtained through pressure fluctuation data and visual observation, so that the compression resistance of the pipeline is comprehensively evaluated.

The invention discloses a container pressure resistance test system with a multi-stage pressure stabilizing function, and belongs to the technical field of material testing, the container pressure resistance test system comprises an electric control cabinet, a box body and a water tank, a pressurization unit, a fluid distribution module and a pressure adjusting unit are installed in an inner cavity of the box body, the fluid distribution module comprises a branching device with seven outlets, a one-way valve and a flow divider, and the pressure adjusting unit is connected with the branching device. The pressure adjusting unit comprises an energy accumulator installed on a branching device, a box is communicated with a safety valve and a flow divider, the safety valve and the flow divider are communicated with a pressurizing unit and the branching device respectively, and the pressurizing unit is communicated with the branching device through a one-way valve. Six outlets of the shunt are respectively connected with a water outlet electromagnetic valve, a check valve, a water outlet module, a three-way valve and a pressure stabilizer in sequence, the other path of the shunt is connected with a pressure gauge, and a pressure sensor is mounted on the water outlet module. According to the invention, a multi-stage pressurization and pressure stabilization system is adopted and is combined with a split-flow type liquid pre-filling system, so that the device is suitable for testing the pressure resistance of various pressure containers.

The utility model discloses a water distribution device on a high-speed mixed bed, which comprises a water distribution plate with an arc-shaped cross section, the periphery of the water distribution plate is welded with the inner wall of a barrel, a manhole is arranged on the water distribution plate, a manhole plate is arranged at the manhole, the cross section of the manhole plate is arc-shaped and is consistent with the radian of the water distribution plate, and the size of the manhole plate is larger than that of the manhole. The manhole plate is located below the water distribution plate, a sealing gasket is arranged at the overlapped position of the manhole plate and the water distribution plate, the manhole plate and the water distribution plate are fixedly connected through a bolt, mounting holes are evenly distributed in the water distribution plate and the manhole plate, water caps are mounted in the mounting holes, and a water cap filtering part is mounted above the water distribution plate and the manhole plate. Resin is prevented from running to the upper portion of the water distribution plate and entering the water cap to block the water cap, the source of large pressure difference is eliminated, and the compression strength of the water distribution plate is improved.

The invention relates to the technical field of cable detection, and belongs to a detection device for testing the voltage resistance of a cable. Comprising a detection table, the detection table is fixedly connected with a fixed support, the fixed support is slidably connected with a sliding support, the fixed support is fixedly connected with a hydraulic push rod, the telescopic end of the hydraulic push rod is fixedly connected with a pressing block, the pressing block is located above the fixed support, the detection table is provided with a tooth-missing ring, and the tooth-missing ring is provided with a tooth-missing groove. The tooth-missing ring is fixedly connected with two connecting plates which are symmetrically distributed, and the two connecting plates are jointly and rotationally connected with a swing support. According to the invention, the state of the cable under composite mechanical stress is simulated by using the swing of the swing support in two directions and the extrusion of the pressure block on the cable, and the result obtained by carrying out a voltage withstanding test on the cable under the state can reflect the insulation performance evolution of the cable under the action of dynamic mechanical stress. Therefore, reference value and data with high reliability are provided for development of novel cables applied to joints of industrial robots.

The invention discloses a waterproof and pressure-resistant acceleration impact sensor, and relates to the technical field of impact detection, the waterproof and pressure-resistant acceleration impact sensor comprises a base, the bottom of the base is provided with a mounting screw groove, the top of the base is fixedly provided with a supporting stud, the outer ring of the supporting stud is sleeved with an inner protective shell in a threaded manner, and the inner protective shell is internally provided with a sensitive element. The device comprises an inner protective shell, the outer side of the inner protective shell is wrapped with an outer protective shell in a protective mode, a buffer reset mechanism is installed at the top of the outer protective shell, and an outer ring damping mechanism is installed in the buffer reset mechanism. The waterproof sealing performance, the impact resistance and pressure resistance and the signal transmission stability are remarkably improved, the problems that a traditional sensor is prone to leakage, signal distortion and connection looseness in extreme environments such as underwater explosion are effectively solved, and the sensor is suitable for complex application scenes such as wide temperature and high-frequency impact.

The invention relates to the technical field of fire-fighting pipe detection, and particularly discloses a fire-fighting pipe pressure resistance detection device and method.The fire-fighting pipe pressure resistance detection device comprises a main frame, a drainage pipe, a first spherical valve, a fire-fighting pipe, a top cover, a pressurizing cavity, an instantaneous pressure increasing mechanism, a pressure stabilizing mechanism, a water inlet pipe, a second spherical valve and a pressure gauge; the top end of the drainage pipe extends out of the top end of the main frame, a first spherical valve is arranged on the outer wall of the drainage pipe, and the bottom end of the fire-fighting pipe is connected to the top end of the drainage pipe through flange screws. The device effectively makes up the defect that the dynamic impact effect cannot be evaluated in the traditional static pressure test, can more comprehensively and accurately verify the structural integrity and the pressure bearing capacity of the fire-fighting pipe under the complex working condition, and remarkably improves the reliability of the detection result; therefore, it is ensured that the fire-fighting pipe has the capacity of continuously and stably conveying fire-fighting water in practical application, and the risk of pipeline breakage or leakage caused by the water hammer effect is greatly reduced.

The utility model relates to the technical field of pipeline pressure resistance detection, and discloses a pressure pipeline pressure resistance detection device, which comprises a detection box body, a box cover; the two groups of adjustable plugging mechanisms are symmetrically mounted on the opposite side walls of the detection box body; a pressure conduit; the plugging parts of the two groups of adjustable plugging mechanisms can plug the openings in the two ends of the pressure pipeline; and the air inflation structure is installed on one set of adjustable plugging mechanisms, one end of the air inflation structure extends towards the outside of the detection box body, and the air inflation structure is used for being connected with a pressing machine. According to the device, air leakage detection can be carried out by detecting water contained in the box body, so that the problem that the detection precision is influenced by judgment errors caused by visual observation can be avoided; and if the pressure pipeline bursts due to high-pressure gas, the detection box body can be used for protecting and preventing splinters from splashing all around, so that the safety of testers is ensured, and the cleaning workload of workers can be reduced.