Pull rod type rubber expansion joint capable of preventing deformation at high temperature

Abstract

The utility model relates to the technical field of rubber expansion joints, and discloses a high-temperature anti-deformation pull rod type rubber expansion joint which comprises two extension pipes, flanges are fixedly mounted on the outer portions of the two extension pipes, corrugated pipes are arranged at the inner ends of the two extension pipes, high-temperature-resistant layers are arranged on the outer portions of the two corrugated pipes, and the high-temperature-resistant layers are arranged on the outer portions of the two corrugated pipes. Mounting pipes are arranged at the ends, away from the extension pipe, of the two corrugated pipes, a mounting mechanism is arranged between the two mounting pipes, a limiting mechanism is arranged in a flange, and a first screwing bolt penetrates through a gasket to be mounted in an inserting ring and the mounting pipes in a threaded mode, so that mounting of the inserting ring and the mounting pipes is completed; the connecting pipe with the proper length can be selected for installation according to the distance between two pipelines needing to be connected, the connecting rod is installed between the first limiting piece and the second limiting piece to complete installation of the connecting rod, the problem that the length of the whole expansion joint is inconvenient to adjust according to the distance of pipeline connection is solved, and the expansion joint is more flexible to use.

Description

Technical Field

[0001] This utility model relates to the field of rubber expansion joint technology, specifically a high-temperature deformation-resistant tie rod type rubber expansion joint. Background Technology

[0002] An expansion joint is a flexible element that effectively compensates for axial deformation, reducing its stress and thus minimizing thermal stress in the tube, tube sheet, and shell, preventing strength failure, instability failure, and tube pull-out failure. It consists of accessories such as end pipes, supports, and conduits that form its main working body. Expansion joints are designed to compensate for stress caused by temperature differences.

[0003] Existing expansion joints have relatively fixed support rods during use, making it inconvenient to adjust the overall length of the expansion joint according to the spacing of pipe connections. Therefore, it is necessary to improve the high-temperature deformation-resistant tie rod type rubber expansion joint to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature deformation-resistant tie rod type rubber expansion joint to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature deformation-resistant tie rod type rubber expansion joint, comprising two extension tubes, flanges fixedly installed on the outside of each of the two extension tubes, corrugated pipes provided at the inner ends of each of the two extension tubes, high-temperature resistant layers provided on the outside of each of the two corrugated pipes, mounting pipes provided at the ends of each of the two corrugated pipes away from the extension tubes, an installation mechanism provided between the two mounting pipes, and a limit mechanism provided inside the flanges.

[0006] Preferably, the installation mechanism includes two insert rings, which are respectively disposed inside two installation tubes. A sealing ring is fixedly installed on the inner side of each of the two insert rings. A connecting tube is provided between the two insert rings. Four bolts are threadedly installed on the outside of each of the two installation tubes. A washer is provided on the outside of each bolt to make the bolt installation more compact and to avoid damaging the installation tube.

[0007] Preferably, the high-temperature resistant layer is fixedly installed between the mounting tube and the extension tube, and the bolt is threaded inside the insert ring, so that the insert ring and the mounting tube are installed.

[0008] Preferably, the sealing ring is disposed between the connecting pipe and the mounting pipe, and the sealing ring is pressed between the mounting pipe and the connecting pipe, so that the device has better sealing performance.

[0009] Preferably, the limiting mechanism includes four protrusions, which are symmetrically fixedly installed in pairs inside the two flanges. A rotating block is rotatably installed inside the protrusion, and two cylinders are fixedly installed outside the rotating block. A limiting piece is fixedly installed outside the cylinder, and a connecting rod is rotatably installed outside the cylinder. A bolt is threaded inside the cylinder, and a limiting piece is fixedly installed outside the bolt, so that the bolt can install the limiting piece.

[0010] Preferably, the connecting rod is positioned between the cylinder and the second limiting piece, thus completing the installation of the connecting rod.

[0011] Preferably, the second limiting piece is disposed at the top of the cylinder, so that the connecting rod rotates between the first limiting piece and the second limiting piece.

[0012] Compared with the prior art, this utility model provides a high-temperature deformation-resistant tie rod type rubber expansion joint, which has the following beneficial effects:

[0013] 1. This high-temperature deformation-resistant tie rod type rubber expansion joint is installed inside the plug ring and mounting pipe by tightening the bolt through the gasket thread, so that the plug ring and mounting pipe are installed. This allows for the selection of a suitable length of connecting pipe and its connected mechanism according to the required distance between the two pipes.

[0014] 2. Based on this, the present invention installs a connecting rod between limiting plate one and limiting plate two, so that the connecting rod is installed. When using the connecting rod and the connecting pipe, the installation can be selected according to the distance between the two pipes, avoiding the problem of inconvenience in adjusting the length of the overall expansion joint according to the distance of the pipe connection, making it more flexible to use.

[0015] 3. Based on this, the present invention allows the rotating block to rotate inside the protrusion, the connecting rod to rotate between the first limiting plate and the second limiting plate, and the corrugated pipe and the high-temperature resistant layer to expand and contract, so that the device can deform in multiple directions, thereby effectively compensating for axial deformation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 3 This is an exploded view of the installation mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the limiting mechanism of this utility model;

[0021] Figure 5 This is an exploded view of the limiting mechanism of this utility model.

[0022] In the diagram: 1. Extension pipe; 2. Flange; 3. Bellows; 4. High-temperature resistant layer; 5. Mounting pipe; 6. Mounting mechanism; 61. Insert ring; 62. Sealing ring; 63. Connecting pipe; 64. Gasket; 65. Bolt 1; 7. Limiting mechanism; 71. Protrusion; 72. Rotating block; 73. Cylindrical piece; 74. Limiting plate 1; 75. Connecting rod; 76. Bolt 2; 77. Limiting plate 2. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-4 This utility model provides a technical solution: a high-temperature anti-deformation tie rod type rubber expansion joint, including two extension tubes 1, flanges 2 fixedly installed on the outside of the two extension tubes 1, bellows 3 provided at the inner end of the two extension tubes 1, high-temperature resistant layer 4 provided on the outside of the two bellows 3, mounting tubes 5 provided at the end of the two bellows 3 away from the extension tubes 1, mounting mechanism 6 provided between the two mounting tubes 5, and limit mechanism 7 provided inside the flanges 2.

[0027] Furthermore, the installation mechanism 6 includes two insert rings 61, which are respectively disposed inside the two installation tubes 5. A sealing ring 62 is fixedly installed on the inner side of each insert ring 61. A connecting tube 63 is provided between the two insert rings 61. Four bolts 65 are threadedly installed on the outside of each of the two installation tubes 5. A gasket 64 is provided on the outside of the bolts 65 to make the bolts 65 installed more tightly and without damaging the installation tubes 5.

[0028] Furthermore, the high-temperature resistant layer 4 is fixedly installed between the mounting tube 5 and the extension tube 1, and the bolt 65 thread is installed inside the insert ring 61, so that the insert ring 61 and the mounting tube 5 are installed.

[0029] Furthermore, the sealing ring 62 is disposed between the connecting pipe 63 and the mounting pipe 5, and the sealing ring 62 is pressed between the mounting pipe 5 and the connecting pipe 63, so that the device has better sealing performance.

[0030] Example 2:

[0031] Please see Figure 5 Furthermore, in conjunction with Embodiment 1, the limiting mechanism 7 includes four protrusions 71, which are symmetrically fixedly installed in pairs inside the two flanges 2. A rotating block 72 is rotatably installed inside the protrusion 71. Two cylinders 73 are fixedly installed on the outside of the rotating block 72. A limiting piece 74 is fixedly installed on the outside of the cylinder 73. A connecting rod 75 is rotatably installed on the outside of the cylinder 73. A bolt 76 is threaded inside the cylinder 73. A limiting piece 77 is fixedly installed on the outside of the bolt 76, so that the bolt 76 can install the limiting piece 77.

[0032] Furthermore, the connecting rod 75 is positioned between the cylinder 73 and the limiting piece 77, thus completing the installation of the connecting rod 75.

[0033] Furthermore, the second limiting piece 77 is disposed on the top of the cylinder 73, so that the connecting rod 75 rotates between the first limiting piece 74 and the second limiting piece 77.

[0034] In actual operation, when this device is used, select a suitable length of connecting pipe 63 and its connected mechanism according to the required distance between the two pipes. Insert the insert ring 61 into the inside of the mounting pipe 5, so that the external threaded hole of the mounting pipe 5 corresponds to the external threaded hole of the insert ring 61. Place the gasket 64 on the outside of the mounting pipe 5, and then tighten the bolt 65 through the gasket 64 and thread it into the inside of the insert ring 61 and the mounting pipe 5, so that the insert ring 61 and the mounting pipe 5 are installed. The sealing ring 62 is pressed between the mounting pipe 5 and the connecting pipe 63, so that the device has better sealing performance. The other side of the insert ring 61 connected to the connecting pipe 63 is installed into the other mounting pipe 5 in the same way. At this time, the device is installed. Then select the matching connecting rod 75 and insert it into the outside of the cylinder 73. The bottom of the connecting rod 75 contacts the limiting piece 74. Thread the bolt 76 into the inside of the cylinder 73 until the limiting piece 77 contacts the cylinder. The top of the cylinder 73 allows the connecting rod 75 to be installed between the first limiting plate 74 and the second limiting plate 77, thus completing the installation of the connecting rod 75. When using the connecting rod 75 and the connecting pipe 63, the installation can be selected according to the distance between the two pipes, avoiding the problem of inconvenience in adjusting the length of the overall expansion joint according to the distance of the pipe connection, making it more flexible to use. Then, the two extension pipes 1 are installed to the pipes through the flange 2. When the two pipes are misaligned, the rotating block 72 rotates inside the protrusion 71, and the connecting rod 75 rotates between the first limiting plate 74 and the second limiting plate 77. At the same time, the corrugated pipe 3 and the high-temperature resistant layer 4 can expand and contract, allowing the device to deform in multiple directions, thereby effectively compensating for axial deformation, reducing the temperature difference stress of the pipe, tube sheet and shell, avoiding strength failure, instability failure and pipe pull-out failure, and protecting the pipeline.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A high-temperature deformation-resistant tie rod type rubber expansion joint, comprising two extension tubes (1), characterized in that: Flanges (2) are fixedly installed on the outside of both extension tubes (1), bellows (3) are provided at the inner end of both extension tubes (1), high temperature resistant layer (4) is provided on the outside of both bellows (3), installation tube (5) is provided at the end of both bellows (3) away from the extension tube (1), installation mechanism (6) is provided between the two installation tubes (5), and limit mechanism (7) is provided inside the flange (2).

2. The high-temperature deformation-resistant tie rod type rubber expansion joint according to claim 1, characterized in that: The installation mechanism (6) includes two insert rings (61), which are respectively disposed inside the two installation tubes (5). A sealing ring (62) is fixedly installed on the inner side of each of the two insert rings (61). A connecting tube (63) is provided between the two insert rings (61). Four bolts (65) are threadedly installed on the outside of each of the two installation tubes (5). A gasket (64) is provided on the outside of each bolt (65).

3. The high-temperature deformation-resistant tie rod type rubber expansion joint according to claim 2, characterized in that: The high-temperature resistant layer (4) is fixedly installed between the mounting tube (5) and the extension tube (1), and the bolt (65) is threadedly installed inside the insert ring (61).

4. The high-temperature deformation-resistant tie rod type rubber expansion joint according to claim 2, characterized in that: The sealing ring (62) is disposed between the connecting pipe (63) and the mounting pipe (5).

5. A high-temperature deformation-resistant tie rod type rubber expansion joint according to claim 1, characterized in that: The limiting mechanism (7) includes four protrusions (71), which are symmetrically fixed in pairs inside the two flanges (2). A rotating block (72) is rotatably installed inside the protrusion (71). Two cylinders (73) are fixedly installed on the outside of the rotating block (72). A limiting piece (74) is fixedly installed on the outside of the cylinder (73). A connecting rod (75) is rotatably installed on the outside of the cylinder (73). A bolt (76) is threaded inside the cylinder (73). A limiting piece (77) is fixedly installed on the outside of the bolt (76).

6. A high-temperature deformation-resistant tie rod type rubber expansion joint according to claim 5, characterized in that: The connecting rod (75) is positioned between the cylinder (73) and the limiting piece (77).

7. A high-temperature deformation-resistant tie rod type rubber expansion joint according to claim 5, characterized in that: The second limiting piece (77) is disposed on the top of the cylinder (73).

Images