639 results about "Pressure resistance" patented technology

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 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 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 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 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 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.

A seamless tank with excellent pressure resistance and a method for manufacturing the same are provided. The seamless tank of the present invention includes a cylindrical main body (10), a circumferential grounding portion (20b) connected to the lower end of the cylindrical main body, and a rising bottom (30) connected from the circumferential grounding portion toward the central axis. The surface area of ​​the outer surface of the rising bottom is defined as A. D The area of ​​the imaginary plane with the periphery as its outline is defined as A. B When, 1.55≥(A) D / A B The relationship is ≥1.40.

This utility model relates to the field of mold clearing strip technology, and discloses a high-temperature and pressure-resistant mold clearing strip, including a strip body, a heat-resistant layer on the side wall of the strip body, a base layer on the side wall of the heat-resistant layer, a pressure-resistant component inside the heat-resistant layer, and a splicing component on the side wall of the strip body; the pressure-resistant component includes a first fixed shell, a connecting block, and a first spring, a side wall of the fixed shell is fixedly connected to the inside of the heat-resistant layer, and the side wall of the connecting block is slidably connected to the inside of the first fixed shell. In this utility model, the two-stage buffer pressure-resistant component composed of the first fixed shell, the connecting block, and the first spring, and the second fixed shell, the connecting rod, and the second spring, enables the strip to absorb pressure layer by layer through the elastic deformation of the double springs when subjected to high mold pressure, thereby achieving the effect of dispersing high pressure and reducing local stress on the strip body, the heat-resistant layer, and the base layer. The above structure improves the pressure resistance stability and service life of the strip.

This invention relates to the field of force sensor technology, and more particularly to a pressure-balanced underwater six-dimensional force sensor sealing structure and method. It primarily addresses the problems of insufficient sealing pressure resistance and susceptibility to seawater leakage when existing six-dimensional force sensors are applied in underwater scenarios, and the fact that high underwater pressure can cause deformation of the main structure, interfering with strain measurement and leading to force signal deviation. The proposed technical solution includes a force sensor body, with a mounting plate installed at the output end of the force sensor body, and an elastic element disposed at and penetrated by the elastic element at the output end of the force sensor body; a sealing element disposed on the side of the force sensor body away from the elastic element, the sealing element being made of rigid or elastic material. The force sensor body, the elastic element, and the sealing element form a sealing structure that encloses the deformable beam and the PCB board. This invention can improve its underwater sealing pressure resistance and anti-interference capability, ensure force measurement accuracy, and assist underwater robots in precise operation.

The invention discloses a triple locking metal roof system which comprises a metal roof board, a fixing support and hook pieces, the hook pieces comprise the upper hook piece and the lower hook piece, the fixing support is provided with a pin groove, the lower end of the lower hook piece is connected with a pin shaft, the pin shaft is installed at the pin groove, and the two sides of the bottom of the fixing support are connected with a main body structure through fasteners. The metal roof panel comprises a panel body, a male rib, a female rib and buckling grooves, the two sides of the panel body are connected with the male rib and the female rib through the buckling grooves, and the male rib and the female rib are welded to the upper hook piece. According to the roof system, the waterproof performance is guaranteed, the negative pressure resistance is improved, the thermal expansion and cold contraction amount is larger, and the roof system is more suitable for being applied to large roofs.

The application discloses a kind of underground wall hat beam structure, it is related to underground diaphragm wall technical field, hat beam structure includes continuous wall main part and hat beam component, hat beam component includes first hat beam and second hat beam, first hat beam and second hat beam are located in the two sides of continuous wall main part.Support component includes first support, first connecting piece and second connecting piece, first connecting piece is located in the interior of first hat beam, second connecting piece is located in the interior of second hat beam, first support is located in the interior of continuous wall main part, and the both ends of first support are connected to first connecting piece and second connecting piece respectively.The hat beam component of the application can remain to serve as a part of underground wall, so that the integrity of underground wall is better, has better water stop and pressure resistance capacity.In addition, first hat beam and second hat beam are connected to underground wall main part by support component, so that first hat beam and second hat beam which need to be demolished can be used as formwork to pour continuous wall main part, reduce material waste.

The inspection and adjustment of the pressure sensor can be easily performed without adding a complicated mechanism. Therefore, in the liquid chromatograph, a first output value P1 of the pressure sensor (107) measured when a flow path is made in an open state to the atmosphere or a first chromatographic column (110) in which a packing is not filled is set in a chromatographic column setting portion (104) is obtained, a second output value P2 of the pressure sensor measured when a second chromatographic column (111) having a known pressure resistance Ps is set in the chromatographic column setting portion is obtained, and the gain of the pressure sensor is updated using the first output value P1 and the second output value P2.

The utility model discloses a self-adaptive structure of a valve sealing surface, which comprises a motor output shaft, a plane thrust ball bearing, a spring, a rotating shaft, a base plate, a valve moving plate, a valve fixed plate and a valve fixing seat, and an arc-shaped structure is arranged at the center of the rotating shaft; an output shaft of the motor is matched and connected with the rotating shaft; a plane thrust ball bearing, a spring and a rotating shaft are sequentially mounted on the motor output shaft from bottom to top; the rotating shaft is connected with the base plate and the valve moving plate in a matched mode. And the valve fixed plate is attached and fixed to the valve moving plate attaching surface through the valve fixing seat. The utility model discloses can carry out the self-adaptation to the two fitting plane of valve stator plate and valve rotor plate, guarantee two fitting plane complete fit, prevent liquid leakage, also have pressure resistance simultaneously, the pressure can reach 0.8 Mpa.

The present application provides a technology for improving the pressure resistance of an igniter assembly. The igniter assembly includes an igniter body having an ignition portion filled with a primer and a conductive portion extending from the ignition portion; an igniter collar having a cylindrical wall portion surrounding at least the conductive portion of the igniter body; and a resin molded body sandwiched between the igniter body and the igniter collar to integrate the igniter body and the igniter collar. The igniter collar has a first support portion provided at an inner circumferential portion of the wall portion and formed in a convex shape toward the radial inner side of the wall portion in a manner of being buried in the resin molded body, and a second support portion provided at a position in the inner circumferential portion further away from the ignition portion than the first support portion in the direction of the central axis of the wall portion and formed in a convex shape toward the radial inner side of the wall portion in a manner of being buried in the resin molded body, or formed in a concave shape toward the radial outer side of the wall portion in a manner of filling the resin molded body inside the second support portion.

This utility model discloses a wear-resistant rubber piston, relating to the field of hydraulic cylinder piston technology. It includes a first piston ring, with a second piston ring fixedly sleeved on the outer side of the first piston ring. An annular cavity is formed inside the first piston ring, and a wear-resistant mechanism is provided at the annular cavity. The wear-resistant mechanism includes a first elastic ring and a second elastic ring, with multiple springs and multiple buffer airbags spaced apart between them. The first piston ring compresses the first and second elastic rings, thereby buffering and absorbing external forces. The multiple springs connect the first and second elastic rings into a whole, improving the resistance to external forces. The multiple buffer airbags absorb the pressure on the first and second elastic rings, further enhancing the buffering and absorption of external forces, thus improving the overall pressure resistance and wear resistance of the rubber piston.

A self-priming pump body and a pressure resistance testing machine therefor. The self-priming pump body comprises a base, a drive electric motor being fixed on the base, a shell being fixed on the base, a drive cover being fixed on one side of the shell, a transmission rod being rotatably arranged in the drive cover, the output end of the drive electric motor being connected to an impeller in the shell by means of the transmission rod, a water inlet being fixed on one side of the shell, and a water outlet being fixed on the shell. The pressure resistance testing machine comprises a machine table, a material-conveying table being fixed on the machine table, two testing tables being fixed on one side of the material-conveying table, material conveying rollers being rotatably arranged in an array on the material-conveying table, two material discharge ports being provided on one side of the material-conveying table, a first cylinder being fixed on one end of each test table, and a circular plate being fixedly arranged at an output end of each first cylinder. In the present invention, the interior of a self-priming pump is tested by means of a first testing piece, which can simulate the impact of impurities in conveyed liquid on the interior of the self-priming pump body; and the exterior of the self-priming pump is tested by means of a second testing piece, which tests the compressive strength of the self-priming pump body, thereby achieving a high test accuracy.

The application relates to the technical field of heating plate performance detection, and discloses a heating plate device based on visual technology, a detection method thereof and a production process.The detection device comprises a monitoring head fixedly connected at the top of the detection device, a control center fixedly connected at the top of the detection device, a rotating drive assembly fixedly connected at the rear end inner wall of the detection device, the rotating drive assembly being provided as a driving motor, a rotating shaft fixedly connected at the front end output end of the rotating drive assembly, a first bevel gear fixedly connected at one end of the rotating shaft away from the rotating drive assembly, and second bevel gears meshingly connected on the left and right sides of the first bevel gear.The device has the advantages of improving the detection efficiency of the device, avoiding the damage of the heating plate caused by breakdown during the pressure resistance performance test of the heating plate, facilitating the subsequent exploration of the unqualified reasons of the heating plate, the timely improvement of the manufacturing process of the heating plate, the saving of resources, and the convenience for users, and the like.

The invention provides a resonance type compliant cavity composite structure pressure-resistant bending disc transducer which comprises a simply-supported ring, composite pressure-resistant assemblies are symmetrically arranged on the simply-supported ring up and down, the composite pressure-resistant assemblies and the simply-supported ring form an air cavity, and each composite pressure-resistant assembly comprises a watertight layer, a piezoelectric ceramic piece, a metal bending disc and a resonance type compliant pressure-resistant shell. The shell is arranged in the simply-supported ring, the metal bent disc is arranged above the shell, a medium cavity is formed between the shell and the metal bent disc, water permeable holes are formed in the side wall of the medium cavity, and the exterior of the transducer is communicated with the medium cavity. And a watertight layer covers the outer side. According to the composite shell structure, a pressure bearing structure and a driving structure are designed separately, pressure balance between driving force and a driving element is achieved through a coupling medium, and the anti-pressure capacity is improved; the shell is a bending vibration shell with the working frequency consistent with that of the transducer, the driving impedance is low, and the static pressure resistance is high.

The invention relates to the technical field of aero-engine gas flow path sealing, and discloses a labyrinth type multi-stage brush type sealing device which comprises a rotor runway and a multi-stage brush type sealing structure. The rotor runway comprises a plurality of convex parts and a plurality of concave parts, and the convex parts and the concave parts are sequentially and alternately connected in the first direction to form a concave-convex structure; the multi-stage brush type sealing structure comprises a plurality of brush type sealing units, part of the brush type sealing units abut against the protruding parts, and part of the brush type sealing units abut against the concave parts. The multi-stage brush type sealing is arranged, so that the pressure resistance of the sealing device is improved; and meanwhile, the rotor runway forms a concave-convex structure through sequentially and alternately connecting a plurality of convex parts and a plurality of concave parts, and is matched with a multi-stage brush type sealing structure to form a labyrinth sealing effect, so that double sealing is formed, a leakage flow path is increased, leakage energy loss is effectively increased, the leakage amount is greatly reduced, and the sealing performance of the whole device is improved.

The utility model provides a blade ring, a fastener and a high-pressure-resistant joint device, a pipeline connecting section and a fastener connecting section are arranged in the blade ring, and a connecting structure matched with the blade ring is arranged on the outer wall of the fastener. The joint device comprises a blade ring, a first fastener and a second fastener. The pipeline is fastened in a multi-stage mode through the connector device, under the condition that the pipeline and the connector device are both made of PEEK materials, the pressure resistance of the pipeline and the connector device can be larger than 80 Mpa and even reach 200 Mpa after the pipeline and the connector device are made of stainless steel or titanium materials, and the application requirements of ultra-high performance liquid chromatography and mass spectrometry can be met. Meanwhile, the fastening point positions of the pipeline to be fastened are distributed at all positions of the pipeline, so that stress point positions of the pipeline are dispersed, the stress concentration phenomenon of the pipeline is relieved, the stress borne by a single stress point of the pipeline is greatly reduced due to the dispersed stress point positions, and the situation that the pipeline is seriously deformed and blocked due to stress concentration is avoided.

According to the compression-resistant precision steel pipe, two positioning rings are symmetrically arranged in a steel pipe body, two butt-joint rings are symmetrically arranged at the two ends of the steel pipe body, butt-joint plates are arranged at the outer ends of the butt-joint rings, and the butt-joint rings can be inserted into the steel pipe body and make contact with the positioning rings; a plurality of grooves and reinforcing ribs are arranged on the outer wall of the steel pipe body, the reinforcing ribs are located in the grooves, a plurality of limiting holes are formed in the peripheral side of the butt joint plate, the two ends of each reinforcing rib can be inserted into the corresponding limiting hole, the steel pipe body is composed of an inner reinforcing layer and an outer toughness layer, the reinforcing layer made of alloy steel provides high-strength support, and the reinforcing ribs are made of steel. External pressure can be effectively resisted, and steel pipe deformation is prevented; the ductile layer made of low-carbon steel endows the steel pipe with good toughness, pressure impact can be buffered, brittle fracture is avoided, and the compressive property of the steel pipe is essentially improved through combination of the ductile layer and the steel pipe.

The utility model provides a device for detecting the pressure resistance of an autoclaved aerated concrete block. The autoclaved aerated concrete block compression resistance detection device comprises a bottom plate, the top of the bottom plate is fixedly connected with a fixing column, and the top of the fixing column is fixedly connected with a supporting table. According to the autoclaved aerated concrete block compression resistance detection device provided by the utility model, through the arrangement of the pushing seat, when compression resistance detection of a concrete block is finished, the first hydraulic column is started to drive the supporting seat to move up and down, so that the supporting seat can drive the concrete block to move out of the limiting box; at the moment, an electric push rod is started, so that the electric push rod can drive the concrete fragments to horizontally move into a storage box through a push seat, the cleaning and collecting effects of the concrete fragments are further achieved, and the problem that concrete block waste needs to be cleaned when single-time concrete block detection is finished is avoided; therefore, convenience is brought to multiple times of detection of the concrete block.

The invention discloses a pressure resistance and resistance detection device and method based on a plastic tray, and relates to the technical field of pressure resistance and resistance detection devices.The pressure resistance and resistance detection device comprises a detection sealing shell and the plastic tray, a supporting frame is arranged at the bottom of the detection sealing shell, and a temperature control box used for simulating a high-temperature storage environment is arranged on one side of the detection sealing shell; a pressure distribution mechanism is arranged at the upper end of the supporting frame. The supporting legs of the plastic tray are arranged at the upper end of the supporting plate, a weight is applied to the upper end of the supporting plate to simulate the stacking load, meanwhile, the temperature control box is used for regulating and detecting the internal temperature of the sealing shell, and high-fidelity reproduction of the real use working condition of the plastic tray in the high-temperature or low-temperature environment is achieved; load is transmitted to the supporting plate through the supporting legs and then acts on the inclined pulling plate, the inclined pulling plate is installed in the inclined groove in a sliding mode through the inclined sliding block and matched with the surface of the triangular block, and the uneven stress state under the non-ideal conditions such as uneven ground, supporting leg suspension or foreign matter interference is simulated.

The utility model relates to valve machining technical field, especially a new type valve cover. Including base, annular pipe, reinforcing surface, fixed ring and annular groove, the annular groove sets up in the base body center position, two fixed ring respectively set up on the base body, and two fixed ring respectively are close to base body both ends setting, the annular pipe sets up in the base upward operation surface. Including raw material detection, heating and material preparation, making embryo and forging, intermediate detection, trimming and shaping, cooling and cutting, welding and processing, final detection, cleaning and polishing, equipment maintenance, the utility model has the beneficial effect that: through the close connection of annular pipe and annular groove, the sealing performance of valve cover is promoted, effectively prevents medium leakage, through strict raw material detection and each link quality detection, can effectively improve the quality of valve cover, enhances its sealing property and pressure resistance, reduces the occurrence of product failure and leakage problem.

The utility model provides a liquid storage device and a compressor. The liquid storage device comprises a shell, a liquid inlet and a liquid outlet, the protruding part is arranged on the shell, and the protruding part is provided with a mounting channel communicated with the interior of the shell; one end of the guide pipe is arranged in the mounting channel, the other end of the guide pipe is located outside the shell, a mounting gap is formed between the peripheral face of the guide pipe and the inner wall face of the mounting channel, and the mounting gap close to one end of the guide pipe is smaller than the mounting gap close to the other end of the guide pipe. According to the liquid storage device provided by the invention, the mounting gap can be gradually increased or suddenly increased from one end of the guide pipe to the other end of the guide pipe, so that a connecting structure or a connecting piece can be arranged in the large mounting gap, and even if the guide pipe deviates towards one side, a sufficient laying space can be provided for a welding strip or a welding flux; and therefore, the welding strength is effectively improved, the pressure resistance value of the liquid storage device is increased, and the stability and reliability of the liquid storage device in the using process are ensured.

This utility model provides a pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe, belonging to the technical field of hollow-wall spiral wound pipes. The pressure-resistant and flame-retardant PE hollow-wall spiral wound pipe provided by this utility model features a reinforcing tube with reinforcing ribs spirally wound on its outer circumference. Pressure-resistant filler is filled into the reinforcing ribs, improving the overall rigidity and pressure resistance of the spiral wound pipe, making it less prone to deformation and damage under external pressure. Simultaneously, a plastic spring is provided between the reinforcing tube and the spiral wound pipe body, providing internal support to the reinforcing tube and enhancing its ring stiffness and axial stiffness. Due to the plastic spring and the spirally wound reinforcing ribs on the outer circumference of the reinforcing tube, stress concentration is reduced, resulting in excellent bending resistance and preventing breakage of the spiral wound pipe. Furthermore, a flame-retardant and heat-insulating layer and a corrosion-resistant layer are provided on the outer circumference of the reinforcing tube, improving the flame retardancy and corrosion resistance of the spiral wound pipe.

The invention relates to the technical field of rotary compensators, in particular to a high-pressure-resistant rotary compensator for pipelines, which comprises an outer cylinder, a flange plate connected to the outer wall of the outer cylinder, an inner cylinder rotatably arranged on the inner side of the outer cylinder and a sealing flange slidably inserted at the upper end of the outer cylinder, and fixing mechanisms are arranged among the flange plate, the sealing flange and the outer cylinder. And an auxiliary supporting mechanism is arranged between the sealing flange and the inner cylinder. The rotary compensator is convenient to disassemble and assemble, the connection between the sealing flange of the rotary compensator and the flange on the outer cylinder does not need to be realized through the matching of a plurality of bolts and nuts, and the maintenance and the installation of the rotary compensator are convenient. After the rotary compensator is assembled and fixed, an additional support can be formed for the inner cylinder of the rotary compensator, the pressure resistance of the inner cylinder is better due to the two supports, and the pressure resistance of the inner cylinder is improved, so that the situation that the supporting stability between the inner cylinder and the outer cylinder is influenced due to the fact that pressure is concentrated at one supporting position for a long time in the past is avoided; and the normal use of the rotary compensator is prevented from being influenced.

A rubber sealing type pipeline leaking stoppage device comprises one or two fixing structures and a plugging pipe matched with the fixing structures, each fixing structure comprises a first half hoop and a second half hoop which are vertically matched to form full wrapping, the first half hoop and the second half hoop are consistent in structure, and the two ends of the first half hoop and the two ends of the second half hoop are connected through first fasteners. A sealing sleeve structure matched with the first half hoop and the second half hoop is arranged between the first half hoop and the second half hoop and arranged on the outer layer of the plugging pipe in a sleeving mode, multiple sets of pressing plates are symmetrically arranged on the two sides of the sealing sleeve structure, and the symmetrically-arranged pressing plates are connected through second fasteners. By the adoption of the structure, the modular split design is adopted, and the device adapts to complex trends of different pipe diameters and also adapts to a multi-pipeline parallel scene; multiple sealing guarantee is achieved, axial movement of the sealing sleeve is prevented, and radial movement between the sealing sleeve and the hoop is avoided; disassembly and assembly are quicker and more convenient, maintenance is convenient, pressure is evenly applied, compression resistance is stable, and practicability is high.

This utility model discloses a spring-loaded NTC temperature sensor for automotive coolant, relating to the field of sensor technology. It includes a brass housing, a connector plastic shell mounted on the top of the brass housing, a terminal mounted on the bottom of the connector plastic shell, a thermally conductive material injected into the inner wall of the bottom of the brass housing, an NTC thermistor connected inside the thermally conductive material, an encapsulation material covering the outer wall of the NTC thermistor, a connection between the top of the NTC thermistor and the bottom of the terminal, and a washer mounted on the top of the brass housing. In this utility model, the resistance leads, solder joints, and terminals are encapsulated to protect the strength of the resistance leads while meeting insulation, pressure resistance, moisture-proof, and waterproof requirements. The brass housing is very thin, and the bottom is filled with thermally conductive material, ensuring the sensor has a sensitive and fast response time, improving the safety and reliability of the coolant piping system.