Pipe end fitting with sealing reinforcement

Abstract

The utility model discloses a pipeline end connecting piece with sealed reinforcing structure belongs to pipeline connection technical field, and the connecting piece includes connecting pipe, flow pipe, connecting mechanism and sealing mechanism, and the connecting mechanism is through the hoop of inner wall shape and pipeline outer wall feature matching overall wrapping connection, to homogenization connection stress, and sealing mechanism carries out secondary sealing through the flexible sealing bush of outside, and the bush is equipped with the compensating sealing ring that can self -inflating of meeting fluid. The utility model discloses through setting up detachable hoop, and make the inner wall shape of hoop and the polygon nut of connecting pipe and flow pipe outer wall, support ring and so on structure matching, utilize the whole package locking mode to connect, reduced stress concentration, strengthened anti -vibration ability, avoided the situation of connection loose failure, will connection stress evenly distribute in whole connection area, strengthened the connection strength and structural stability.

Description

Technical Field

[0001] This utility model relates to the field of pipe connection technology, and in particular to a pipe end connector with a sealing and reinforcing structure. Background Technology

[0002] In many industrial fields such as chemical industry, water supply, and energy, pipelines are an indispensable infrastructure for fluid transportation, and the connection between pipelines is a key link in the entire pipeline system. Common methods for achieving pipeline end connections mainly include threaded connections and flange connections.

[0003] Traditional connection methods have revealed some inherent shortcomings in practical applications. Whether it is a threaded connection or a flange connection, the tightening force is concentrated on the threaded pair or a few bolts. This stress-concentrated connection method is prone to gradual loosening of fasteners when facing the continuous vibration of the pipeline system caused by fluid pulsation and equipment operation, resulting in a decrease in connection strength. The thermal expansion and contraction effect generated when the pipeline transports hot and cold media will also repeatedly act on these stress concentration points, further aggravating the risk of connection loosening, thereby affecting the structural stability and safety of the entire pipeline system.

[0004] The sealing performance of traditional connection methods is directly related to the stability of the connection. Once the connection becomes loose, the clamping force of the gasket in the flange connection will become uneven or insufficient, and the sealing clearance of the threaded connection will also increase. Both of these situations will directly lead to seal failure and leakage. Gaskets or sealants, traditional sealing materials are passive seals. After long-term temperature changes and media erosion, they will age, harden, and lose elasticity. They cannot actively adapt to changes in working conditions to compensate for the decline in their performance. Once an initial small leak occurs, it will quickly expand.

[0005] Therefore, this utility model proposes a pipe end connector with a sealing and reinforcing structure to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of pipe end connectors, such as insufficient connection strength and vibration resistance leading to loose connections, and the sealing structure being prone to failure due to changes in working conditions, resulting in leakage risks, this utility model aims to provide a pipe end connector with a modified structure that can effectively solve the above problems and has a reinforced sealing structure.

[0007] This utility model provides a pipe end connector with a sealing and reinforcing structure, including: a connecting pipe, a flow pipe, a connecting mechanism, and a sealing mechanism.

[0008] The connecting mechanism is composed of two detachable clamps, one and two, which are fixed to each other. The sealing mechanism includes a flexible sealing bushing with a groove on its inner wall and an expansion compensation sealing ring placed in the groove.

[0009] Furthermore, the end of the connecting pipe is provided with a threaded structure and is threadedly connected to the flow pipe. The connecting mechanism is combined by wrapping the entire connection between the connecting pipe and the flow pipe, while the flexible sealing bushing of the sealing mechanism is combined by surrounding and covering the external joint between the connecting mechanism and the flow pipe.

[0010] Preferably, the outer wall of the connecting pipe is fixed with a polygonal nut, and the outer wall of the flow pipe is fixed with a support ring. Correspondingly, the inner walls of clamp one and clamp two are respectively provided with limiting groove one and limiting groove two. The limiting groove one is adapted to the shape of the polygonal nut, and the limiting groove two is adapted to the shape of the support ring.

[0011] Preferably, the end of the connecting pipe is also connected to a polygonal adapter pipe, and the internal space shape of the first clamp and the second clamp matches the outer wall shape of the polygonal adapter pipe.

[0012] Preferably, each of the corresponding ends of the clamp one and the clamp two is fixed with a fixing block, and two adjacent fixing blocks are fastened together by fixing bolts and fixing nuts passing through them.

[0013] Preferably, a shock-absorbing pad is provided between the two adjacent fixed blocks to absorb vibration.

[0014] Preferably, the sealing mechanism further includes a support base, which is fixed to the outer wall of the first clamp, the second clamp and the flow tube, and the outer wall of the flexible sealing bushing is provided with a limiting hole that slides with the support base.

[0015] Preferably, the flexible sealing bushing is a highly elastic bushing.

[0016] Preferably, the expansion compensation sealing ring is made of a fluid-expanding material.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting a detachable clamp and matching the inner wall shape of the clamp with the polygonal nut, support ring and other structures on the outer wall of the connecting pipe and the flow pipe, uses an overall wrapping and locking method for connection. This solves the problem in the prior art that pipe connectors rely solely on thread or flange connections, resulting in stress concentration, poor vibration resistance, and easy loosening and failure. It achieves the technical effect of evenly distributing the connection stress throughout the entire connection area, greatly enhancing the connection strength and structural stability.

[0018] 2. This utility model solves the problems of performance degradation of the sealing structure under temperature and pressure fluctuations, inability to self-repair after minor leakage, and low sealing reliability in the prior art by adding a flexible sealing bushing to the outside of the connector and setting a compensating sealing ring that can automatically expand when exposed to fluid on the inner wall of the bushing. It achieves the technical effect of building a double sealing defense line and being able to adaptively compensate and seal when leakage occurs, significantly improving the sealing reliability of the device under complex working conditions.

[0019] 3. This utility model, by adopting an external clamp fastening and adding a shock-absorbing pad structure, solves the problems of complex installation of traditional connection methods, and the fact that vibration can easily cause fasteners to loosen, increasing maintenance difficulty and cost. It achieves the technical effect of simplifying the installation process, effectively preventing bolt loosening, reducing maintenance frequency and cost, and extending service life. Attached Figure Description

[0020] Figure 1 This is a perspective view of a pipe end connector with a sealing and reinforcing structure proposed in this utility model; Figure 2 This is a schematic diagram of the structure of a connecting pipe with a sealing and reinforcing structure for a pipe end connector proposed in this utility model; Figure 3 This is an exploded view of the flow tube of a pipe end connector with a sealing and reinforcing structure proposed in this utility model; Figure 4 This is an exploded view of a clamp with a sealing and reinforcing structure for a pipe end connector proposed in this utility model.

[0021] Legend: 1. Connecting pipe; 2. Flow pipe; 3. Polygonal nut; 4. Polygonal adapter pipe; 5. Connecting mechanism; 501. Support ring; 502. Clamp one; 503. Clamp two; 504. Limiting groove one; 505. Limiting groove two; 506. Fixing block; 507. Fixing bolt; 508. Fixing nut; 509. Shock-absorbing pad; 6. Sealing mechanism; 601. Support seat; 602. Flexible sealing bushing; 603. Limiting hole; 604. Installation groove; 605. Expansion compensation sealing ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides a pipe end connector with a sealing reinforcement structure, which aims to solve the problems of uneven stress on pipe connectors leading to loose connections and easy failure of the sealing structure when temperature and pressure change.

[0024] A pipe end connector with a sealing reinforcement structure includes a connecting pipe 1 and a flow pipe 2. The end of the connecting pipe 1 is provided with a threaded structure and is threadedly connected to the flow pipe 2. The connector also includes a connecting mechanism 5 for strengthening the connection strength and a sealing mechanism 6 for strengthening the sealing performance. The connecting mechanism 5 is completely wrapped around the connection between the connecting pipe 1 and the flow pipe 2, while the sealing mechanism 6 is disposed outside the connecting mechanism 5 and the flow pipe 2.

[0025] To solve the above-mentioned technical problems, the technical solution of this embodiment is the connecting mechanism 5, and the connecting mechanism 5 forms a specific structural fit and connection relationship with the aforementioned connecting pipe 1 and flow pipe 2.

[0026] Please refer to the following carefully. Figure 1 , Figure 3 and Figure 4 The connecting mechanism 5 includes two detachably fixed clamps, a first clamp 502 and a second clamp 503. To achieve the engagement with the clamps, a polygonal nut 3 and a polygonal adapter pipe 4 are fixed to the outer wall of the connecting pipe 1, while a support ring 501 is fixed to the outer wall of the flow pipe 2. Limiting grooves 504 and 505 are respectively formed on the inner walls of the first clamp 502 and the second clamp 503, and their internal spatial shapes also match the shape of the outer wall of the polygonal adapter pipe 4. In the assembled state, the first limiting groove 504 is adapted to the shape of the polygonal nut 3, and the second limiting groove 505 is adapted to the shape of the support ring 501. The shapes are matched, and this irregular matching limiting structure ensures that clamp 1 502 and clamp 2 503 can lock the connecting pipe 1 and the flow pipe 2 in both axial and circumferential directions after being combined. In order to achieve the tight connection of clamp 1 502 and clamp 2 503, a fixing block 506 is fixed at the corresponding end of clamp 1 502 and clamp 2 503. Two adjacent fixing blocks 506 are fastened together by fixing bolts 507 and fixing nuts 508 that pass through them. In order to avoid loosening caused by vibration, a shock-absorbing pad 509 is also provided between two adjacent fixing blocks 506.

[0027] Based on the above embodiments, the present invention may further include the following preferred technical solutions: In one preferred embodiment, to achieve reliable positioning of the flexible sealing bushing 602, the sealing mechanism 6 further includes a support base 601, which is fixed to the outer wall of clamp 1 502, clamp 2 503 and flow tube 2. The outer wall of the flexible sealing bushing 602 is provided with a limiting hole 603 that slides with the support base 601. In another preferred embodiment, to improve the fit and reliability of the seal, the flexible sealing bushing 602 is a highly elastic bushing. Furthermore, to achieve adaptive compensation sealing in the event of micro-leakage, the expansion compensation sealing ring 605 is made of a fluid-expanding material.

[0028] Working principle: When connecting the ends of two adjacent flow pipes 2 through connecting pipe 1, both ends of connecting pipe 1 are connected to polygonal adapter pipes 4, and the opposite sides of the two polygonal adapter pipes 4 are connected to threaded pipes. Polygonal nuts 3 are fixedly connected to the left and right ends of the outer wall of connecting pipe 1, and sealing reinforcement structures are installed on the outer walls of the two threaded pipes. The two flow pipes 2 are connected through the threads of the threaded pipes. Then, support rings 501 are fixedly connected to the outer walls of the two flow pipes 2. The connection between the flow pipe 2 and connecting pipe 1 is fixed vertically by clamps 1 502 and clamp 2 503. Limiting grooves 1 504 and 2 505 are opened between the two clamps, which correspond to the shapes of the polygonal nuts 3 and support rings 501, respectively. The shape of the internal space of the two clamps can also correspond to the polygonal adapter pipes 4. The shape of the outer wall matches, allowing the two clamps to wrap around the polygonal nut 3, the polygonal adapter pipe 4, and the support ring 501. The support of the protruding parts of the polygonal nut 3 and the support ring 501 enhances the connection strength. Then, since the front ends of the clamp 1 502 and clamp 2 503 are fixedly connected to the fixing blocks 506, the fixing bolts 507 are passed through the two adjacent fixing blocks 506 and then fixed by the fixing nuts 508. At the same time, the shock-absorbing pads 509 are installed between the two fixing blocks 506 to prevent the bolts from loosening due to vibration. The device, through the cooperation of the components of the connecting mechanism 5, ensures that the connection between the connecting pipe 1 and the flow pipe 2 is evenly stressed, preventing the sealing effect from being affected by single-point stress on the connecting components. Furthermore, the special structure of the polygonal nut 3 and the polygonal adapter pipe 4 makes the connection more stable and simplifies the installation process. Furthermore, after sealing the connection between the connecting pipe 1 and the flow pipe 2 using a sealing reinforcement structure, support seats 601 are fixedly installed at the bottom of clamp 1 502, the top of clamp 2 503, and the upper and lower ends of the outer wall of the flow pipe 2. Then, a flexible sealing bushing 602 is installed on the outer wall at the connection between the clamp and the flow pipe 2, and the support seats 601 slide to connect with multiple limiting holes 603 on the outer wall of the flexible sealing bushing 602, thereby restricting the position of the flexible sealing bushing 602 and allowing the flexible sealing bushing 602 to utilize its high elasticity. The connection points are sealed and plugged. At the same time, installation grooves 604 are opened on both the left and right ends of the inner wall of the flexible sealing bushing 602. Then, an expansion compensation sealing ring 605 is added in the installation groove 604. When it encounters water flow, it can automatically expand, which strengthens the sealing effect at the edge of the flexible sealing bushing 602. This allows the device to enhance the sealing of the connection position between the connecting pipe 1 and the flow pipe 2 through the cooperation of the various components of the sealing mechanism 6. This prevents the sealing reinforcement structure of the device itself from failing due to rapid changes in external pressure and temperature, reduces sealing costs, and increases the service life of the connecting parts.

Claims

1. A pipe end connector with a sealing and reinforcing structure, comprising a connecting pipe (1) and a flow pipe (2), wherein the end of the connecting pipe (1) is provided with a threaded structure and is threadedly connected to the flow pipe (2); Its features are, The connector further includes a connecting mechanism (5), which includes a clamp one (502) and a clamp two (503) that are detachably fixed to each other. The clamp one (502) and the clamp two (503) are combined and wrapped around the connection between the connecting pipe (1) and the flow pipe (2). as well as The sealing mechanism (6) includes a flexible sealing bushing (602), which surrounds and covers the external joint between the connecting mechanism (5) and the flow tube (2). The inner wall of the flexible sealing bushing (602) is provided with a placement groove (604), and the placement groove (604) contains an expansion compensation sealing ring (605).

2. The pipe end connector with a sealing and reinforcing structure according to claim 1, characterized in that, The outer wall of the connecting pipe (1) is fixed with a polygonal nut (3), and the outer wall of the flow pipe (2) is fixed with a support ring (501). The inner walls of the clamp one (502) and the clamp two (503) are respectively provided with a limiting groove one (504) and a limiting groove two (505). The limiting groove one (504) is adapted to the shape of the polygonal nut (3), and the limiting groove two (505) is adapted to the shape of the support ring (501).

3. A pipe end connector with a sealing and reinforcing structure according to claim 2, characterized in that, The end of the connecting pipe (1) is also connected to a polygonal adapter pipe (4), and the internal space shape of the clamp one (502) and the clamp two (503) matches the outer wall shape of the polygonal adapter pipe (4).

4. A pipe end connector with a sealing and reinforcing structure according to claim 1, characterized in that, The corresponding ends of the clamp one (502) and the clamp two (503) are fixed with fixing blocks (506), and two adjacent fixing blocks (506) are fastened together by fixing bolts (507) and fixing nuts (508) passing through them.

5. A pipe end connector with a sealing and reinforcing structure according to claim 4, characterized in that, A shock-absorbing pad (509) is also provided between the two adjacent fixed blocks (506).

6. A pipe end connector with a sealing and reinforcing structure according to claim 1, characterized in that, The sealing mechanism (6) also includes a support base (601), which is fixed to the outer wall of the clamp one (502), clamp two (503) and the flow tube (2). The outer wall of the flexible sealing bushing (602) is provided with a limiting hole (603) that slides with the support base (601).

7. A pipe end connector with a sealing and reinforcing structure according to claim 1, characterized in that, The flexible sealing bushing (602) is a highly elastic bushing.

8. A pipe end connector with a sealing and reinforcing structure according to claim 1, characterized in that, The expansion compensation sealing ring (605) is made of a fluid-expanding material.

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