32results about How to "Avoid tightness" patented technology

The utility model discloses an ammonium nitrate solution concentration blending reation kettle with anti -explosion function belongs to reation kettle equipment technical field, the utility model discloses a reation kettle body is communicated with the discharge valve at reation kettle body bottom, can carry out even heating to solution through the electric heating plate in the reation kettle body inner wall bottom groove, avoid local temperature too high and cause ammonium nitrate to decompose gas and cause explosion, the cooperation design of stirring rod and top motor can carry out sufficient stirring to ammonium nitrate solution in reation kettle, make solution concentration distribution even. The annular ring and the explosion -proof pipe fixedly connected with the annular ring that reation kettle body surface sets up up and down, effectively enhanced the overall structural strength of reation kettle, the gas outlet pipe of top annular ring and the gas inlet pipe of bottom annular ring mutually cooperate, and the outside cold gas enters the space between the explosion -proof pipe and reation kettle body, and then even cooling is carried out to reation kettle body, and then gas is discharged to the outside from the gas outlet pipe, and the device has the advantages that the explosion -proof effect is good.

The utility model discloses a water tank with constant pressure measurement function belongs to water tank technical field, aims at solving the most water outlet point of prior art is located water tank under one side of liquid level, and the position of water outlet point is fixed immovably, along with the water supply of carrying out, the liquid level in water supply water tank is constantly reduced, wherein the distance between water outlet point and liquid level will constantly reduce, lead to the water pressure of water outlet point constantly small, although the water tank usually has the water replenishing mechanism to reach the purpose of time water replenishing, but actually still can form fluctuation to the water pressure of water supply water tank, cannot realize constant pressure water supply, and the water replenishing of water tank single, every day also cannot carry out measurement statistics, thereby the actual water replenishing of subsequent management personnel cannot know water tank accurately, thereby bring the problem of influence to the judgment and overhaul of personnel. Including stainless steel water tank, the upper side of stainless steel water tank is connected with inlet pipe, and the other side below of stainless steel water tank is connected with outlet pipe.

This application relates to the field of gas sensor packaging technology, specifically to an automated packaging method, system, and packaging device for gas sensors. The method includes: pre-establishing a packaging process parameter-gas-sensitive channel adaptation model; calculating the actual coaxiality deviation and correcting the sealing pressure reference value based on the gas-sensitive channel aperture; starting the integrated packaging unit, applying pre-pressure according to the corrected sealing pressure, and simultaneously collecting the temperature of the sealing area through an infrared temperature measurement module to determine whether dynamic adjustment of the welding temperature is needed; after welding, maintaining the corrected sealing pressure, and dynamically adjusting the pressure holding time based on the gas-sensitive channel length and the creep coefficient of the sealing material to complete the sealing process. This application achieves a precise balance between sealing performance and conduction efficiency by establishing a dynamic adaptation model of process parameters and gas-sensitive channel structure, overcoming the coupling imbalance bottleneck of existing technologies.

This invention relates to the field of pipeline seepage prevention technology, specifically to a pipeline seepage prevention deformation control support device based on soft soil foundation. The device is installed at the connection point of two adjacent pipelines. The device includes a bearing ring, a support member, and at least n sets of limiting members. Bearing rings are connected to the outer walls of both pipelines near the connection point. Each set of limiting members includes two bearing plates, arranged in an inverted V-shape with alternating front-to-back arrangements. Each bearing plate has a recessed groove containing a friction plate that slides back and forth. When the lower left side of the n bearing plates on the left side of the n sets of limiting members is far from the lower right side of the n bearing plates on the right side, the two friction plates in the same set make relative pressure contact. The support member supports the limiting members. This invention solves the problem that when a support device supports a pipeline, it easily shifts downwards with the settlement of the soft soil foundation, leading to deformation and leakage at the weak connection point of the supported pipeline.

The utility model discloses a portable equipment of vehicle-mounted instrument program offline download belongs to the field of automobile electron technique, including shell, control panel, state indicating unit, connecting wire bundle and man -machine interaction unit, and control panel fixed mounting is in the shell inside, and state indicating unit sets up in the shell surface, and connecting wire bundle one end is electrically connected with control panel, and the other end is from the shell inside and stretches out, and man -machine interaction unit sets up in the shell surface, and state indicating unit is electrically connected with control panel, the control panel includes MCU module, CAN communication module, external interface, power module, LED module, touch module, NOR FLASH module and USB communication protection interface, can be offline operation completely, through built -in large capacity NORFLASH storage program file, gets rid of the dependence of PC, notebook computer and so on host computer equipment, has promoted the portability and flexibility of field operation.

The present application relates to the technical field of high polymer material, and particularly relates to a kind of nanoparticle alkali-resistant hydrophobic modifier.The nanoparticle alkali-resistant hydrophobic modifier is composed of 25-55 parts of skeleton resin, 15-45 parts of anchoring agent, 1-10 parts of reinforcing agent and 100-300 parts of solvent.The present application uses perfluoropolymer system, so that the modifier is resistant to temperature of 400 DEG C or above and strong alkali corrosion;After sintering, it forms homogeneous and firm combination with PTFE matrix, solving the problem of interface peeling.The modifier is particularly suitable for preparing sealing gasket for alkaline electrolytic cell in high-salt and high-humidity environment at sea, significantly improving the dimensional stability and service life of the gasket.

This invention discloses a multi-strand synchronous stranding winding machine for soft copper conductors, relating to the technical field of conductor processing equipment. The machine includes a base, with a frame fixedly mounted on the top. Rotary shafts are rotatably mounted on both sides of the frame. A first guide frame, a second guide frame, and a mounting plate are fixedly mounted on the outer wall of the rotating shafts. A first servo motor is fixedly mounted on one outer wall of the frame. A first clamping assembly allows for quick clamping and fixing of the pay-off reel, making the clamping operation convenient and efficient. The pay-off and traction components can also adjust the clamping roller spacing via bolts to accommodate different specifications of soft copper conductors, offering strong versatility. Through the cooperation of the pay-off assembly, the second clamping assembly, the transmission structure, and the winding assembly, integrated synchronous operation of multi-strand soft copper conductors from pay-off, stranding, traction to winding is achieved. This not only improves the accuracy and quality of soft copper conductor processing but also optimizes the operation process and increases production efficiency.

The application discloses a parallel hole damping-spiral tube inerter underwater damping device and belongs to the technical field of underwater vibration control. The device comprises an upper shell, a lower shell, a damping spring, an open small hole damping and an open fluid inerter. The upper shell and the lower shell are two parts in relative sliding. The damping spring and the open small hole damping are assembled in parallel to form an integral body, which together constitutes an open spring damping. The open spring damping and the open fluid inerter are connected in parallel, and the upper and lower ends of the two are respectively fixed to the upper shell and the lower shell. The open small hole damping and the open fluid inerter are both installed in the upper shell and the lower shell. The application adopts a parallel topology structure of inerter, damping and spring. The double spiral pipes and the symmetrical piston rods realize the fluid inerter effect in two directions. The small holes on the damping piston realize the speed-dependent throttling damping. The device has the characteristics of wide frequency vibration isolation, strong static load capacity, symmetrical positive and negative characteristics and deep water environment.

The utility model discloses a kind of deep-sea camera convenient maintenance cabin structure, it is related to deep-sea equipment technical field, including outer cabin and spiral power assembly, the inside of outer cabin is equipped with maintenance mechanism, one end of outer cabin is equipped with spiral power assembly, in the utility model, through sealing ring is connected in outer cabin outside, the inner ring surface of threaded compensating pipe is attached with sealing ring, ensure preliminary sealing, external water pressure is passed through observation window and outer cabin and is passed to first gasbag, first gasbag is compressed and passes through connecting channel and is passed to compensating gasbag with pressure, compensating gasbag is compressed and drives push plate movement, telescopic link moves on fixed sleeve plate, dynamically adjust push plate position to compensate internal and external pressure difference, further seal the junction of outer cabin and connecting cover, enhance the contact pressure of sealing surface, the linkage design of gasbag and compression spring can respond to deep-sea water pressure change in real time, avoid high pressure to cause cabin deformation or sealing failure.

This utility model discloses a convenient fastening device for flared flanges, relating to the technical field of flared flange fastening devices. The convenient fastening device includes a flared flange A and a convenient fastening device. The device includes a housing, telescopic plates, hexagonal locking blocks, a return spring, a receiving groove, a limiting block, and a limiting groove. The housing is located on one side of the flared flange A. Two telescopic plates are slidably connected inside the housing. The number of hexagonal locking blocks is the same as the number of telescopic plates, and they are all fixedly connected to the surface of the corresponding telescopic plates. The return spring is fixedly connected to the opposite surfaces of the two telescopic plates. The receiving groove is located inside the housing, and the return spring is located inside the receiving groove. The convenient fastening device allows the flange mounting nut to limit the rotation of the flange mounting screws when tightened, and it is easy to operate. It can simultaneously limit the rotation of two flange mounting screws, resulting in higher efficiency.

The utility model relates to sealing strip processing technical field, and disclose a kind of sealing strip cleaning mechanism, including cleaning tank and the cover plate of being set above cleaning tank and being compatible therewith, the side wall of cleaning tank is fixedly installed with hydraulic pressure jacks, cover plate is fixedly installed in the telescopic end of hydraulic pressure jack, the lower surface of cover plate is provided with clamping positioning assembly corresponding sealing strip, the inner wall of cleaning tank is respectively provided with flushing component and brush washing component.The sealing strip cleaning mechanism, sealing strip is clamped in below cover plate, the bottom side of sealing strip is hung in cleaning tank inside, through the rotation of stand column driven by speed reducer, it can drive cleaning brush roller to rotate in horizontal direction, in the process of rotation, based on bevel gear and bevel gear ring meshing, it can drive cleaning brush roller to rotate, in the process of periodic positive and negative reciprocating rotation of speed reducer, utilize the surface friction contact of cleaning brush roller and the sealing strip of hanging, realize the effect of scrubbing to sealing strip surface, ensure the cleanliness of sealing strip cleaning.

The application discloses a high-temperature gas safety valve with pressure relief protection and relates to the field of safety valves.The safety valve housing is provided with an inlet at the left side, and an outlet at the bottom; a pressure relief pipe is communicated with the right outer wall of the safety valve housing, a liquid cooling delivery box is fixedly installed at the lower end of the pressure relief pipe, a one-way gas outlet nozzle is installed at the right end of the pressure relief pipe, and is used for discharging gas. The high-temperature gas safety valve with pressure relief protection is provided with a pressure relief pipe and a multistage pressure relief mechanism, a one-way gas inlet assembly is used for guiding gas to enter step by step, a middle pressure relief assembly is used for buffering and decompressing, and a one-way gas outlet assembly is used for stably discharging, so that scalding hazards are further avoided; the heat-resistant sealing piece on the outer side of the disc, the synchronous linkage design of the opening mechanism and the elastic buffering effect of the buffering mechanism ensure that the valve is sensitive in action under high pressure, and the risk of jamming or failure is reduced.

The application discloses a kind of based on sea condition multimodal perception's offshore dynamic docking sealing method, obtains propagation path parameter and calculates initial fluctuation index, obtains the deviation value sequence corresponding to path fluctuation;Get the corrected attitude vector;By weighted fusion method, reduce the credibility weight of corresponding direction data, and recalculate overall credibility distribution;Determine the optimized attitude vector;Judge whether path fluctuation is stable, if unstable then iteration updates deviation value sequence;Get final position attitude calculation result, for the correction of docking position deviation, output accurate docking instruction sequence.The application enhances the buffering and absorption capacity of equipment to external impact, prevents rigid collision and sealing failure caused by sudden surge or flow field pulsation, improves the safety, flexibility and sealing reliability of offshore dynamic docking.

This invention belongs to the field of plastic processing and packaging technology, and specifically relates to a packaging equipment and method for selling plastic granules. The equipment includes, in sequence, an intelligent storage silo, a pretreatment unit, a continuous metering unit, a protective filling unit, a laser sealing unit, a multi-dimensional detection unit, a blockchain traceability unit, and a flexible palletizing unit. All units are connected via an electrically controlled conveying platform for material transport. An external central AI control system, composed of an edge computing server and a PLC controller, communicates with each unit in real time via a bus. This invention utilizes a continuous recording unit that employs a servo screw feeder and an ultrasonic anti-arching vibrator for coordinated material feeding. Combined with real-time measurements from a Coriolis mass flow meter and a high-precision electronic scale, the central AI control system performs feedforward prediction and PID feedback closed-loop adjustment based on the particle property characteristic vector. The metering error is controlled within ≤±0.2%, with a fine-tuning compensation accuracy of ±0.1%.

The utility model provides a quick assembly and disassembly type swivel joint relates to swivel joint technical field, including the mounting bush, the first limit ring is fixedly connected with the mounting bush outer surface, the movable bush is sleeved with the mounting bush outer surface, the rotary connection pipe is sleeved with the mounting bush inboard. In the utility model, when connecting the mounting bush and the rotary connection pipe, first need to move the movable bush to the active state, provide the space for the insertion of rotary connection pipe, after promoting the movable bush, the rotary connection pipe can enter the mounting bush smoothly, the force that adds promotes the interaction of movable ball and movable rod, forms the activity space, and further creates the condition for the insertion of rotary connection pipe, after the insertion of rotary connection pipe, the elasticity of spring makes the movable bush restore the original position, promotes movable ball movement, further drives movable rod displacement, until movable ball is guided limit groove, ensure that the rotary connection pipe is accurate limit, prevent the separation, limit groove not only limit the separation, still guarantee that the rotary connection pipe can rotate freely after the insertion.

This utility model relates to the field of hydraulic cylinder technology, specifically to a telescopic cylinder for a roadheader, comprising a cylinder body with a cavity inside. A piston rod is disposed within the cavity, with its end extending out of the cylinder body. A spacer block with several through holes is located at the bottom of the cavity. A piston is disposed at the bottom of the piston rod and is slidably connected to the inner wall of the cylinder body. A piston seal is also provided on the outer wall of the piston. A limiting sleeve is provided at the top of the piston and is fitted onto the piston rod. A guide sleeve is provided at the end of the cylinder body, through which the piston rod passes. This utility model effectively prevents deformation of the telescopic cylinder and improves the stability and reliability of cylinder operation.

The utility model relates to modularization buckle mounting structure of cold storage insulation board, this modularization buckle mounting structure of cold storage insulation board, including angle seat, three mutually perpendicular settings right angle board are fixedly installed on angle seat, three right angle boards all are provided with the fixed part for connecting with cold storage wall, the threaded hole is all set up to right angle board both sides side wall, when using, the insulation board corner position that sticks together cold storage top wall and both sides wall is inserted into the gap between air bag and angle seat inner wall formation, until three insulation board corner place sticks together, then through fixed bolt cooperation threaded hole fixes the position of insulation board outside gap, finally opens sealed valve, through the joint is in the air bag and carries out inflation, makes air bag swell, utilizes the air bag after swelling and presses tightly insulation board corner position, makes multiple insulation board corner position each other closely sticks together, avoided as far as possible after long time use easily of insulation board corner position rises, leads to the problem that the sealing and heat preservation performance of insulation board corner place decline.

The utility model provides a kind of both ends fixed special vehicle smoke exhaust device, including first smoke pipe welding assembly, first bellow, smoke pipe installation adjustment assembly, second bellow, heat insulating sleeve and second smoke pipe welding assembly, one end of first smoke pipe welding assembly is fixedly installed in engine smoke outlet, and the other end of first smoke pipe welding assembly is connected with first bellow;One end of second smoke pipe welding assembly is fixedly installed on the deck of vehicle body smoke outlet, and the other end of second smoke pipe welding assembly is connected with second bellow;The both ends of smoke pipe installation adjustment assembly are connected with first bellow and second bellow respectively.Smoke pipe installation adjustment assembly is sealed by radial positioning, axial space adjustment and sealing element, can realize the quick installation of smoke exhaust device, avoid the difficulty of sealing and installation of smoke exhaust device due to the space angle of axis existing between two ports fixed, guarantee the loading progress and prevent the security risk of power cabin due to smoke leakage.

This application belongs to the technical field of pharmaceutical separation equipment, specifically relating to a fluorouridine filtration device. It includes a filtration cup, a filter media bottle positioned above the filtration cup for filling with fluorouridine, and a locking assembly. The inlet of the filtration cup corresponds to the outlet of the filter media bottle. A first docking platform is provided at the edge of the inlet, and a second docking platform corresponding to the first docking platform is provided at the edge of the outlet. This application achieves precise and rapid assembly of the filtration cup and filter media bottle by setting a first docking platform at the edge of the inlet and a second docking platform corresponding to the first docking platform at the edge of the outlet, and directly locking the two docking platforms using the locking assembly. The rigid constraint of the locking assembly automatically keeps the inlet / outlet coaxially aligned, avoiding the risk of poor sealing or component damage caused by traditional forceful pressing. Simultaneously, the platform-type docking structure requires only light force to lock or separate, significantly reducing the probability of material spillage during disassembly.

This invention discloses a method for extending the lifespan of a system by guiding the leakage of molten glass in a platinum channel, belonging to the TFT-LCD substrate glass industry. It primarily addresses the problem of localized, multi-point leakage during the later stages of platinum channel operation. A dedicated unloading device is designed below the original platinum channel, including a semi-circular trough and unloading pipes on both sides for guiding and unloading. This device can effectively bear and divert leakage from the platinum body. The holes at the connection between the unloading pipe and the trough are filled with mud to form a seal at the top of the unloading pipe. The unloading pipe is also filled with insulation and sealing material, allowing the molten glass leaking from inside the channel to be discharged outside the equipment in a short time. This prevents continuous diffusion and erosion of the internal refractory material, ensuring the integrity of the channel structure over a large area and preventing further expansion of localized leakage problems, thus effectively extending the channel's service life to a certain extent.

This utility model discloses a pressure regulating device for a sector-shaped feed valve, including a feed valve body and a hydraulic cylinder mounted on the front of the feed valve body. A mounting plate is fixedly installed on the top of the feed valve body, an active valve plate is movably installed on one side of the bottom of the feed valve body, and a follower valve plate is movably installed on the other side of the bottom of the feed valve body. This utility model relates to the technical field of sector-shaped feed valves. This pressure regulating device, through the cooperation between the hydraulic valve and the protective housing, can adjust the driving pressure of the hydraulic cylinder during feed valve operation, avoiding situations where insufficient pressure leads to slow or stalled closing speed, and also avoiding energy waste caused by excessive pressure, thus improving practicality. Through the cooperation of a dust cover and a fixing ring, the piston rod of the hydraulic cylinder can be closed and dustproofed during operation, preventing particulate material from adhering to the piston rod and causing surface scratches, thereby extending service life.

This invention belongs to the field of medical device technology, and specifically relates to a three-stage dilatation balloon for preventing contrast agent leakage. Addressing the problem that existing three-stage dilatation balloons rupture when the operating pressure exceeds the rated burst pressure, resulting in the instantaneous leakage of high-pressure contrast agent into the patient's body, leading to embolism or tissue damage, the following solution is proposed: an outer balloon body, an inner balloon body, a mesh reinforcement layer, a sheath, and a decompression balloon. The inner balloon body is located inside the outer balloon body, and the ultimate expansion diameter of the outer balloon body is larger than that of the inner balloon body. Both are made of different polymer materials, ensuring that the outer balloon body remains intact and forms a leakage-proof barrier when the inner balloon body ruptures. A mesh reinforcement layer is sandwiched between the inner and outer balloon bodies, and the intersection points of the mesh reinforcement layer are discretely connected to the outer wall of the inner balloon body via micro-anchors. This invention achieves automatic emergency storage and manual aspiration and removal of the contrast agent after balloon rupture, solving the safety problem of contrast agent leakage after overpressure rupture of existing balloons.

This utility model relates to the field of liquid level gauge technology and discloses an explosion-proof magnetic liquid level gauge, including a measuring plate, a measuring tube disposed on the rear side of the measuring plate, a flip-up indicator disposed on the front side of the measuring plate, a warning assembly connecting the top of the measuring tube to the warning indicator, a connecting rope fixedly connected to the inner wall of the measuring tube, a magnetic component slidably connected to the outer wall of the connecting rope, a float fixedly connected to the bottom of the magnetic component, a corrugated compensator fixedly connected to the top and bottom of the measuring tube, a first connecting pipe disposed at the end of the corrugated compensator, a third connecting pipe disposed at the end of the first connecting pipe, and a piston assembly connecting the inner wall of the third connecting pipe to a second connecting pipe. In this utility model, the magnetic liquid level gauge integrates a pressure safety protection function. When the pressure inside the tank exceeds the limit, the top warning indicator immediately alarms, and the operator can quickly drive the piston assembly to cut off the connecting pipe, preventing leakage and explosion risks while supporting pressurized disassembly and maintenance.

The application relates to a structure for preventing scrap accumulation of a numerical control rotary table, which comprises a sealing cover plate, a second sealing element and a sealing flange coaxially arranged; a gas cavity is enclosed between the sealing cover plate and the sealing flange. The application can reduce downtime cleaning time, improve machining efficiency, effectively reduce labor cost, and prolong the service life of the numerical control five-axis rotary table.

The application relates to the technical field of lighting appliances, in particular to a lamp mounting shell module and a lamp. The lamp mounting shell module comprises a mounting support, a mounting shell and a fastener. The mounting support comprises a support body and a positioning piece. The positioning piece is fixedly arranged on the support body. The support body is arranged on a mounting site of the lamp. The support body is provided with a connecting hole. The mounting shell comprises a side wall. The side wall is arranged in a surrounding mode to form a containing space. The side wall is provided with a locking groove group. The locking groove group comprises a first positioning groove and a second positioning groove. The first positioning groove and the second positioning groove respectively extend along the circumference of the side wall. The mounting support is arranged in the containing space to make the connecting hole and the second positioning groove communicate. The positioning piece is movably embedded in the first positioning groove. The fastener is arranged in the second positioning groove and the connecting hole and is used for connecting the side wall and the support body. The lamp comprises a light-emitting assembly and the lamp mounting shell module. The connection reliability between the mounting shell and the mounting support of the lamp mounting shell module is high.

The utility model discloses a steam turbine speed valve, including valve body, install the fixed shell that communicates with each other with its on the air inlet pipe of valve body top, the inside of fixed shell is provided with filter connection subassembly, be provided with sealed spacing subassembly on fixed shell, the top of fixed shell is installed with the air pipe of pipe's guide that communicates with each other, filter connection subassembly includes installation frame, installation frame setting in the inside of fixed shell, the inside of installation frame is provided with the filter screen of pluggable. The utility model discloses through the filter screen in fixed shell can effectively intercept the rust, welding slag, metal particle and so on solid impurity in steam, avoid the impurity to cause the valve clack to jam or sealing surface wear and tear in valve body, convenient to tear down the filter screen from fixed shell inside and maintain or replace simultaneously, filter screen and installation frame are independent assembly, can replace the filter screen of wear or blockage alone, reduced the cost of use, improved practicality.

The utility model belongs to the technical field of tape loom traction mechanism, especially has a tape loom traction mechanism with tension self -adaptation regulation, including the bottom plate, the top of bottom plate is provided with controller, first electric push rod and second electric push rod respectively, the telescopic end of first electric push rod is fixedly connected with the groove frame, the inside sliding connection of groove frame has the sliding frame, the upper surface and the bottom of sliding frame all are fixedly connected with the extension spring, two extension springs are fixedly connected with the inner top wall and the inner bottom wall of groove frame respectively at the end of mutual far away, the left side of groove frame is provided with the tension sensor, the telescopic end of second electric push rod is fixedly connected with the rotary frame, the back of rotary frame is provided with the rotary motor, through being provided with tension sensor, controller, first electric push rod, second electric push rod, extension spring, groove frame, rotary frame and sliding frame subassembly, can real -time monitoring tape tension, and according to the movement of floating rod automatically, make tension sensor sense tension change.

This utility model relates to the technical field of liquid ammonia treatment equipment and discloses an integrated device for liquid ammonia oil and impurity removal and gasification, comprising: an inlet pipe, the bottom end of which abuts against a metal sintered felt filter element. This integrated device for liquid ammonia oil and impurity removal and gasification, through the cooperation of a rotating sleeve, threaded block, and rotating block structure, achieves convenient assembly and disassembly of the metal sintered felt filter element. Operators can quickly complete the assembly and disassembly of the filter element without the need for additional tools, simply by rotating the rotating ring and rotating sleeve. This significantly simplifies the operation process and reduces the workload of operators. Compared with traditional filter element installation structures, this device avoids the problems of filter element damage or seal failure that may occur during cumbersome operations, effectively reducing maintenance costs. Furthermore, the convenient filter element replacement method can shorten equipment downtime for maintenance, improve the operating efficiency of the integrated device for liquid ammonia oil and impurity removal and gasification, and has good economic benefits and practical value.

The utility model relates to the technical field of expansion joint, specifically relates to a shock absorption expansion joint for heat supply and heating pipeline, both sides of one of two connecting plates are fixedly connected with side frame, and the inside of two side frames is equipped with inner plate, and one end of two inner plates is fixedly connected with the both sides of another connecting plate respectively, fixedly connected with telescopic link between two supporting plates, and the telescopic link is equipped with extrusion spring, and the both ends of extrusion spring are fixedly connected with the side of two supporting plates respectively, through setting up the structure of expansion joint pipe and extrusion spring cooperation effect between two connecting plates, the active buffering mechanism is increased on the basis of traditional bellows or rubber spare, can provide stable elastic support when the pipeline system is heated expansion or contraction, effectively absorbs high frequency vibration, pressure fluctuation and thermal stress impact, avoids the fatigue damage and sealing failure caused by rigid connection, reaches the effect of improving shock absorption effect and structural stability.