Corrugated compensator with energy absorbing and buffering assembly

Abstract

The invention provides a corrugated compensator with an energy-absorbing and buffering assembly, which comprises a corrugated compensator body, a foaming assembly is arranged at one end of the leakage corrugated compensator body, and the leakage foaming assembly comprises an outer ring plate, an inner ring plate, an energy-absorbing and buffering assembly and an energy-absorbing and buffering assembly, the outer side of the upper inner ring plate is fixedly mounted on the lower side of the outer ring plate, and lower inner ring plates matched with the upper inner ring plate are symmetrically and fixedly mounted on the lower side of the upper inner ring plate; and the foaming piece is arranged on the front side of the corrugated compensator body, the leakage foaming piece comprises a shell installed on the lower side of the upper inner ring plate, an inner cavity is formed in the leakage shell, and a foaming layer used for generating a foam material is arranged in the leakage inner cavity. The leaked liquid flows into a collecting cavity in the bottom plate under the action of gravity. When accumulated liquid makes contact with the isolation layer, the isolation layer can be dissolved, raw materials stored on the two sides are promoted to be mixed and have a chemical reaction, foam is generated and fills a gap between a pipeline and the compensator body, and blocking is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corrugated compensator, and in particular to a corrugated compensator with energy-absorbing and buffering components. BACKGROUND

[0002] The corrugated compensator, also commonly known as expansion joint or expansion coupling, is composed of a corrugated pipe (a kind of elastic element) as the main working body and accessories such as end pipes, supports, flanges, and conduits. It is mainly used in various pipelines to absorb the dimensional changes of pipelines, conduits, and containers caused by thermal expansion and cold contraction, or to compensate for the axial, lateral, and angular displacement of pipelines, conduits, and containers. It can also be used for noise reduction and vibration reduction to reduce pipeline deformation stress and improve pipeline service life. The connection mode of the corrugated compensator is divided into flange connection and welding.

[0003] Some existing corrugated compensators mainly use a buffering and energy-absorbing structure to relieve the loosening of bolts and nuts at the interface of the pipeline caused by long-term changes in cold and hot temperatures. However, with the long-term use of the pipeline, the buffering and energy-absorbing structure cannot completely eliminate the loosening phenomenon, and gaps may still occur at the interface between the pipeline and the compensator, leading to internal material leakage. SUMMARY

[0004] The present application aims to solve the problem of the existing corrugated compensator buffering and energy-absorbing structure, which cannot completely eliminate the loosening phenomenon, and gaps may still occur at the interface between the pipeline and the compensator, leading to internal material leakage. The present application provides a corrugated compensator with energy-absorbing and buffering components.

[0005] The technical solution adopted by the present application to solve its technical problem is a corrugated compensator with energy-absorbing and buffering components, which comprises a corrugated compensator body, one end of the corrugated compensator body is provided with a foaming component, the foaming component comprises an outer ring plate arranged on the front side of the corrugated compensator body, an upper inner ring plate fixedly installed on the lower side of the outer ring plate, and a lower inner ring plate fixedly installed on the lower side of the upper inner ring plate in a symmetrical manner, the upper inner ring plate and the lower inner ring plate are matched with the outer ring plate to form an outer package structure to wrap the gap, and a foaming piece arranged on the front side of the corrugated compensator body, the foaming piece comprises a shell installed on the lower side of the upper inner ring plate, an inner cavity is formed in the shell, and a foaming layer for generating foam material is arranged in the inner cavity, the foamed foam enters the upper inner ring plate, the lower inner ring plate, and the outer ring plate to fill the gap.

[0006] Further, the foaming layer comprises a polyisocyanate layer arranged on one side of the inner cavity of the shell, a polyol layer arranged on the other side of the inner cavity of the shell, and a separation layer arranged between the polyisocyanate layer and the polyol layer to separate the raw materials and prevent mixing of the two.

[0007] Further, the outer side of the upper inner ring plate is fixedly connected with upper connecting feet in pairs, and the inner side of the upper connecting feet is rotatably connected with bolts.

[0008] Further, the outer side of the lower inner ring plate is fixedly connected with lower connecting feet in pairs, and the inner side of the lower connecting feet is provided with threaded holes matched with the bolts, so that the upper inner ring plate and the lower inner ring plate are assembled into a complete circular plate through cooperation of the upper connecting feet and the lower connecting feet.

[0009] Further, the front side of the shell is provided with a slot, and the inner side of the slot is slidably connected with a sealing plate, so that the sealing plate is opened to facilitate filling of raw materials.

[0010] Further, the front side of the shell is provided with connecting pieces in pairs, and the connecting pieces are used for quick disassembly and assembly of the sealing plate.

[0011] Further, the connecting piece comprises a sleeve shell arranged on the front side of the sealing plate, a plug rod slidably connected in the inner side of the sleeve shell, and a fixed plate slidably connected with the outer end of the plug rod, so that the plug rod is limited when inserted into the inner side of the fixed plate; and a spring arranged in the inner side of the sleeve shell and fixedly connected with the inner wall of the sleeve shell at one end, so that the plug rod is driven to move in the inner side of the sleeve shell by the elastic force of the spring.

[0012] Further, the front side of the sleeve shell is provided with a rectangular sliding groove parallel to the sleeve shell, and the inner side of the sliding groove is slidably connected with a push piece matched with the sliding groove.

[0013] Further, one side of the push piece close to the fixed plate is fixedly connected with one end of the plug rod, and the other side of the push piece is arranged at the other end of the spring, so that the push piece is pushed to drive the plug rod to slide in the inner side of the sleeve shell, and the spring is compressed to generate elastic force.

[0014] Further, the bottom end of the shell is fixedly connected with a bottom plate, the rear side of the bottom plate is fixedly connected with a mounting piece, and the shell is mounted on the bottom of the corrugated compensator body through the mounting piece and the bottom plate.

[0015] Further, the front side of the corrugated compensator body is provided with a pipeline, and the foaming assembly is arranged on the outer side of the pipeline.

[0016] The corrugated compensator with the energy-absorbing and buffering assembly has the following advantages: The present application optimizes the design of the foaming assembly. When a gap between the pipeline and the bellows compensator body causes liquid leakage, the liquid will flow into the collection cavity in the bottom plate under the action of gravity. When the accumulated liquid contacts the isolation layer, it will dissolve the isolation layer, causing the stored raw materials on both sides to mix and chemically react to generate foam. The foam is then pressed into the cavity formed by the upper inner ring plate, the lower inner ring plate and the outer ring plate, and finally fills the gap between the pipeline and the compensator body to achieve leakage plugging. This design can effectively prevent further leakage of the liquid and facilitate subsequent maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective structural schematic view of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 2 is a front view structural schematic view of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 3 is a bottom view structural schematic view of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 4 is a first cross-sectional structural schematic view of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 5 is a second cross-sectional structural schematic view of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 6 is a cross-sectional view of a foaming piece of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 7 is a structural schematic view of a foaming assembly of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 8 is an upper structural schematic view of a foaming assembly of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 9 is a lower structural schematic view of a foaming assembly of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 10 is a local structural schematic view of a foaming assembly of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application; Figure 11 is a structural schematic view of a connecting piece of a bellows compensator with an energy-absorbing and buffering assembly provided by the present application.

[0018] In the figure: 1, bellows compensator body; 101, flange; 102, bellows; 103, lug; 104, pull rod; 105, nut; 2, pipeline; 3, outer ring plate; 301, upper inner ring plate; 4, lower inner ring plate; 401, shell; 402, bottom plate; 403, sealing plate; 404, mounting piece; 5, connecting piece; 501, fixed plate; 502, insertion rod; 503, push piece; 504, spring; 505, sleeve; 6, upper connecting foot; 601, lower connecting foot; 602, bolt; 7, polyisocyanate layer; 701, isolation layer; 702, polyol layer. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are merely intended to explain the present application and are not intended to limit the present application.

[0020] Reference is made to Figures 1-11The corrugated compensator with energy-absorbing buffer assembly provided by the application comprises a corrugated compensator body 1, which is a compensating device for absorbing the size change of a pipeline, conduit or container caused by thermal expansion and cold shrinkage by utilizing the effective telescopic deformation of the elastic element of the corrugated compensator, and belongs to a compensating element. The corrugated compensator body 1 is capable of absorbing axial, lateral and angular displacement and is composed of two groups of flanges 101, corrugated pipes 102 and multiple groups of ear plates 103 and multiple pull rods 104. The corrugated pipes 102 are made of stainless steel series 304 / 304L, have good resistance to weak corrosive media such as water and steam and non-oxidizing acid, have a wide applicable temperature range (-196℃~+450℃) and high cost performance. The corrugated pipes 102 are designed to be able to withstand multiple cyclic displacements without plastic deformation. In a complex system, an external pressure type or balanced type structure can be used to eliminate the thrust of pressure on the fixing point. The two groups of flanges 101 are symmetrically arranged at the two ends of the corrugated pipes 102 and are connected to the corrugated pipes 102 by a conduit to form a whole. The two ends of the corrugated pipes 102 are provided with end pipes, which are important components of the corrugated compensator and are mainly used for connecting the compensator and the pipeline 2 system and serving as a transition component between the corrugated pipes 102 and the pipeline 2. The end pipes are fixed to the corrugated pipes 102 by welding to ensure that the pipeline 2 system can absorb axial, lateral or angular displacement and reduce the influence of stress on the pipeline 2 in a high-pressure, high-temperature or corrosive environment. The multiple groups of ear plates 103 are uniformly arranged on the outside of the flanges 101 and are connected by welding. The ear plates 103 are internally provided with connecting holes matched with the pull rods 104. The pull rods 104 are slidingly connected in the connecting holes. The two ends of the pull rods 104 are uniformly provided with threaded grooves. The two ends of the pull rods 104 are threadedly connected with nuts 105. The pull rods 104 are used for limiting the displacement direction or protecting the corrugated pipes 102. The pull rods 104 are connected with the corrugated pipe 102 structure of the compensator to ensure that the compensator can stably work in the pipeline 2 system and prevent deformation or damage caused by vibration or external force. In a large-pull-rod 104 lateral type corrugated compensator, the pull rods 104 can withstand the internal pressure thrust of the pipeline 2 system, prevent the corrugated pipes 102 from failing due to excessive pressure and limit the deformation range of the corrugated pipes 102 to prevent excessive stretching or compression and prolong the service life of the compensator. By adjusting the length or tightness of the pull rods 104, the displacement capacity of the compensator can be controlled to adapt to different pipeline 2 thermal expansion requirements. The pull rods 104 can ensure that the compensator can stably operate for a long time and reduce the maintenance cost of the pipeline 2 system.

[0021] Specifically, the working principle of the bellows compensator body 1: first, compensate for axial displacement and thermal expansion absorption: when the pipeline 2 is elongated due to temperature rise, the bellows 102 is compressed; when the temperature decreases, the bellows 102 is stretched. The elastic deformation of the bellows offsets the length change of the pipeline 2. The internal medium pressure will generate an axial thrust, and the bellows 102 will absorb this force through deformation, reducing the load on the fixed support. Second, compensate for lateral / angular displacement, lateral displacement: when the pipeline 2 is laterally offset, the bellows 102 absorbs the displacement by lateral bending deformation with the aid of hinge or universal joint structure. Angular displacement: when the end of the pipeline 2 is angularly deflected, the bellows 102 adapts to the angular change by local compression / stretching deformation. Third, vibration and noise reduction: the flexible structure of the bellows 102 can absorb the energy of mechanical vibration or fluid pulsation, reducing system noise and stress.

[0022] One end of the bellows compensator body 1 is provided with a foaming assembly, which comprises: an outer ring plate 3 arranged on the front side of the bellows compensator body 1; an upper inner ring plate 301 fixedly installed on the lower side of the outer ring plate 3, the lower side of the upper inner ring plate 301 is symmetrically fixedly installed with a lower inner ring plate 4 matched therewith, and the outer ring plate 3 is matched to form an outer package structure to wrap the gap; a foaming piece arranged on the front side of the bellows compensator body 1, the foaming piece comprises a shell 401 installed on the lower side of the upper inner ring plate 301, an inner cavity is formed in the shell 401, and a foaming layer for generating foam material is arranged in the inner cavity. The foamed foam enters the upper inner ring plate 301, the lower inner ring plate 4 and the outer ring plate 3 to fill the gap.

[0023] Further, the front side of the bellows compensator body 1 is provided with a pipeline 2, and the foaming assembly is sleeved outside the pipeline 2.

[0024] Specifically, the pipeline 2 is sleeved with a flange 101, the pipeline 2 and the bellows compensator body 1 are connected through the flange 101 and the flange 101, the foaming assembly is sleeved outside the pipeline 2 and the bellows compensator body 1, and is located at the gap between the two groups of flanges 101 and flanges 101, which is convenient for subsequent foaming and filling. The inner diameter of the outer ring plate 3 is equal to the outer diameter of the flange 101, and a positioning groove matched with the lug plate 103 is formed on the rear side of the outer ring plate 3, and the positioning groove and the lug plate 103 are one-to-one corresponding. The outer ring plate 3 and the lug plate 103 are connected by sliding insertion, and a feeding port is formed in the middle bottom side of the outer ring plate 3. An upper side of the upper inner ring plate 301 is provided with a discharge port corresponding to the feeding port in the middle of the outer ring plate 3. The upper inner ring plate 301 and the lower inner ring plate 4 are both semicircular, and the inner diameter and the outer diameter are equal.

[0025] Further, the foaming layer comprises: a polyisocyanate layer 7 arranged on one side of the inner side of the shell 401; a polyol layer 702 arranged on the other side of the inner side of the shell 401; and a separation layer 701 arranged between the polyisocyanate layer 7 and the polyol layer 702, used to separate the raw materials and prevent mixing.

[0026] Specifically, the polyisocyanate layer 7 uses isocyanate material, such as special treated toluene diisocyanate, the polyol layer 702 uses polyether polyol material, and the reaction of isocyanate and polyol generates polyurethane, and the reaction of isocyanate and water generates carbon dioxide, which is used as a foaming agent to promote the formation of foam, and the separation layer 701 uses polyvinyl alcohol, which does not contain active groups that react with isocyanate or hydroxyl groups, so it remains inert in the polymerization system of TDI and polyether polyol, and has good water solubility, which can be used as an additive or carrier in a water-based system. The principle is that the liquid leaked from the pipeline 2 will flow into the collection cavity in the bottom plate 402 under the action of gravity. When the accumulated liquid contacts the separation layer 701, the separation layer 701 will be dissolved, causing the polyisocyanate layer 7 and the polyol layer 702 to mix and chemically react to generate foam.

[0027] Further, the outer side of the upper inner ring plate 301 is symmetrically provided with an upper connecting leg 6 by welding.

[0028] Further, the outer side of the lower inner ring plate 4 is symmetrically provided with a lower connecting leg 601 by welding, and the lower connecting leg 601 is internally provided with a threaded hole matched with the bolt 602.

[0029] Specifically, the upper connecting leg 6 and the lower connecting leg 601 are equal in size, and the upper connecting leg 6 is internally provided with a threaded hole matched with the bolt 602 and corresponding to the threaded hole of the lower connecting leg 601, and the sizes are equal. During assembly, the upper connecting leg 6 is correspondingly attached to the lower connecting leg 601, and then connected by the bolt 602, so as to assemble the upper inner ring plate 301 and the lower inner ring plate 4 into a whole. The bottom end of the lower inner ring plate 4 is provided with an entrance, and the foam can enter the upper inner ring plate 301 and the lower inner ring plate 4 through the entrance for filling.

[0030] Further, the front of the shell 401 is provided with a slot, and the slot is internally slidably connected with a sealing plate 403. Opening the sealing plate 403 facilitates the filling of raw materials.

[0031] Specifically, the shell 401 is internally provided with a reaction cavity, and the reaction raw materials can chemically react in the reaction cavity.

[0032] Further, the front side of the shell 401 is symmetrically provided with a connecting piece 5, through which the cover plate 403 can be quickly disassembled and assembled.

[0033] Further, the connecting piece 5 comprises a sleeve 505 provided on the front side of the cover plate 403, a plug rod 502 slidingly connected in the sleeve 505, the outer end of the plug rod 502 being slidingly connected with a fixing plate 501, the plug rod 502 playing a limiting role after being inserted into the fixing plate 501, and a spring 504 provided in the sleeve 505 and welded at one end to the inner wall of the sleeve 505, the spring 504 being used to drive the plug rod 502 to move in the sleeve 505 by virtue of the elastic force of the spring 504.

[0034] Specifically, the inside of the sleeve 505 is provided with a placing groove for accommodating internal parts, one end of the sleeve 505 is provided with a circular hole, the plug rod 502 is slidingly connected in the circular hole, the fixing plate 501 is provided with a limiting hole matched with the plug rod 502 on the side close to the sleeve 505, one end of the plug rod 502 is slidingly connected in the limiting hole, and the cover plate 403 is installed in the shell 401 through the connecting piece 5.

[0035] Further, the front side of the sleeve 505 is provided with a rectangular sliding groove parallel to the sleeve 505, and the sliding groove is slidingly connected with a push piece 503 matched with the sliding groove.

[0036] Further, the side of the push piece 503 close to the fixing plate 501 is welded on one end of the plug rod 502, and the other side of the push piece 503 is provided on the other end of the spring 504, the push piece 503 being used to drive the plug rod 502 to slide in the sleeve 505 and simultaneously compress the spring 504 to generate elastic force.

[0037] Specifically, the rear side of the fixing plate 501 is screwed to the front side of the shell 401, the sleeve 505 is assembled into a whole body by an outer shell and a rectangular plate, the push piece 503 is in T shape and slidingly connected in the sleeve 505, the other end of the spring 504 abuts against the other end of the push piece 503, the push piece 503 is pulled to move to the middle of the shell 401, then the spring 504 is compressed, and the plug rod 502 is simultaneously pulled out of the fixing plate 501 to be separated, so that the cover plate 403 can be opened to take raw materials.

[0038] Further, the bottom end of the shell 401 is welded with a bottom plate 402, the rear side of the bottom plate 402 is welded with a mounting piece 404, and the shell 401 is mounted at the bottom of the corrugated compensator body 1 through the mounting piece 404 and the bottom plate 402.

[0039] Specific, the inside of the mounting plate is provided with a connecting hole, the inside of the connecting hole is rotatably connected with a screw, the bottom plate 402 is detachably installed on the outside of the flange 101 through the screw, the top end of the bottom plate 402 is provided with two round holes, one of which is located at the gap between the two flanges 101, and the other is located at the lower side of the shell 401, the lower side of the shell 401 is provided with a connecting hole, and corresponds to the other round hole at the top end of the bottom plate 402.

[0040] The working process of the corrugated compensator with the energy-absorbing and buffering assembly provided by the application is as follows: when a gap is generated between the pipeline 2 and the corrugated compensator, the liquid in the pipeline 2 flows out from the gap, under the action of gravity, and flows into the inside of the shell 401, and the liquid flows into the collecting cavity in the bottom plate 402 under the action of gravity. When the accumulated liquid contacts the isolation layer 701, the isolation layer 701 is dissolved, the stored raw materials on both sides are mixed and chemical reaction occurs, and foam is generated. With the continuous chemical reaction, the foam increases, and the foam is then pressed into the cavity formed by the upper inner ring plate 301, the lower inner ring plate 4 and the outer ring plate 3, and finally fills the gap between the pipeline 2 and the compensator main body, thereby realizing emergency plugging of the leakage.

[0041] The above is only the preferred embodiment of the application, and is not used to limit the application, and any modification, equivalent replacement and improvement made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A corrugated compensator with an energy absorbing and buffering component, comprising a corrugated compensator body, characterized in that: A foaming component is provided at one end of the corrugated compensator body, and the foaming component includes: An outer ring plate, which is arranged on the front side of the corrugated compensator body; The upper inner ring plate is fixedly mounted on the lower side of the outer ring plate on its outer side, and the lower side of the upper inner ring plate is symmetrically fixedly mounted with a matching lower inner ring plate, which cooperates with the outer ring plate to form an outer structure to wrap the gap; A foaming part is arranged on the front side of the corrugated compensator body. The foaming part includes a shell installed on the lower side of the upper inner ring plate. An inner cavity is opened inside the shell. A foaming layer for generating foam material is provided inside the inner cavity. The foamed foam enters the upper inner ring plate, the lower inner ring plate and the outer ring plate to fill the gap.

2. The corrugated compensator with energy absorbing and buffering components according to claim 1, characterized in that: The foaming layer comprises: a polyisocyanate layer disposed on an inner side of the housing; a polyol layer disposed on the other inner side of the housing; The isolation layer is located between the polyisocyanate layer and the polyol layer and is used to separate the raw materials and prevent the two from mixing.

3. The corrugated compensator with energy absorbing and buffering components according to claim 1, characterized in that: The outer side of the upper inner ring plate is symmetrically fixedly connected with an upper connecting leg, and the inner side of the upper connecting leg is rotatably connected with a bolt.

4. The corrugated compensator with energy absorbing and buffering components according to claim 3, characterized in that: The outer side of the lower inner ring plate is symmetrically fixedly connected with a lower connecting foot, and the interior of the lower connecting foot is provided with a threaded hole adapted for a bolt. The upper inner ring plate and the lower inner ring plate are assembled into a complete circular plate through the cooperation of the upper connecting foot and the lower connecting foot.

5. The corrugated compensator with energy absorbing and buffering components according to claim 1, characterized in that: A notch is provided on the front side of the shell, and a sealing plate is slidably inserted and connected inside the notch. The sealing plate can be opened to facilitate filling of raw materials.

6. The corrugated compensator with energy absorbing and buffering components according to claim 5, characterized in that: Connecting pieces are symmetrically arranged on the front side of the shell, and the sealing plate can be quickly disassembled and assembled through the connecting pieces.

7. The corrugated compensator with energy absorbing and buffering components according to claim 6, characterized in that: The connecting piece includes: a casing, which is arranged on the front side of the sealing plate; An insertion rod is slidably inserted into the interior of the housing, and an outer end of the insertion rod is slidably inserted into a fixing plate. When the insertion rod is inserted into the fixing plate, it plays a limiting role; The spring is arranged inside the casing, and one end of the spring is fixedly connected to the inner wall of the casing. The elastic force characteristic of the spring is used to drive the insertion rod to move inside the casing.

8. The corrugated compensator with energy absorbing and buffering components according to claim 7, characterized in that: A rectangular sliding groove parallel to the housing is provided on the front side of the housing, and a paddle adapted to the sliding groove is slidably connected inside the sliding groove.

9. The corrugated compensator with energy absorbing and buffering components according to claim 8, characterized in that: The side of the paddle close to the fixed plate is fixedly connected to one end of the insertion rod, and the other side of the paddle is arranged at the other end of the spring. When the paddle is moved, the insertion rod slides inside the housing and the spring is squeezed to generate elastic force.

10. The corrugated compensator with energy absorbing and buffering components according to claim 1, characterized in that: The bottom end of the shell is fixedly connected to a bottom plate, the rear side of the bottom plate is fixedly connected to a mounting piece, and the shell is mounted on the bottom of the corrugated compensator body through the mounting piece and the bottom plate.

11. The corrugated compensator with energy absorbing and buffering components according to claim 1, characterized in that: A pipe is provided on the front side of the corrugated compensator body, and the foaming component is sleeved on the outside of the pipe.

Images