High-strength pressure-bearing structure of expansion joint

Abstract

The utility model discloses an expansion joint high strength pressure bearing structure, including expansion joint, reinforcing subassembly and protection subassembly, the expansion joint includes the corrugated pipe at the center, the reinforcing subassembly includes the inner casing pipe that is fixed installation in the expansion joint. According to the high-strength pressure-bearing structure of the expansion joint, the inner sleeve at the inner end of the corrugated pipe in the expansion joint can reinforce the strength and impact resistance of the inner end and the outer end of the inner sleeve in the use process of the expansion joint by means of a plurality of groups of inner reinforcing rings and outer reinforcing rings which are arranged at the inner end and the outer end of the inner sleeve in a staggered manner and a plurality of groups of reinforcing rods which are arranged and mounted in the inner sleeve after the inner sleeve is mounted; meanwhile, the left protective sleeve and the right protective sleeve which are mounted on the two sides of the expansion joint at the outer end of the corrugated pipe in a clamping manner, and the sealing rings which are mounted at the inner end and the outer end of the right protective sleeve and are used for multi-layer sealing between the left protective sleeve and the right protective sleeve can also realize dustproof, anti-corrosion and anti-abrasion protection of the outer end of the corrugated pipe; therefore, the service life of the corrugated pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of expansion joints, in particular to a high-strength pressure-bearing structure of an expansion joint. Background Art

[0002] An expansion joint refers to a flexible element that can effectively compensate for axial deformation. For example, the expansion joint welded on the fixed tube sheet heat exchanger shell has large axial flexibility and is easy to deform. It can compensate for the thermal expansion difference between the tube and the shell due to different wall temperatures, reduce their axial load, and thus reduce the temperature difference stress of the tube, tube sheet and shell, avoiding strength damage, instability damage and tube pull-off damage. There are many types of expansion joints, and the commonly used ones are corrugated, ring plate welding and sandwich shell structures.

[0003] Existing expansion joints, such as the high-sealing expansion joint disclosed in publication number CN210800396U, have the advantage of being easy to disassemble and install, but the fixing ring at the inner end of the airbag cavity of this expansion joint does not have a reinforcement structure at the inner and outer ends. As a result, when the pressure in the expansion joint is high, the fixing ring with a single structure is prone to deformation and other problems. For this reason, we propose a high-strength pressure-bearing structure for the expansion joint. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-strength pressure-bearing structure of an expansion joint, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A high-strength pressure-bearing structure of an expansion joint comprises an expansion joint, a reinforcement assembly and a protection assembly, wherein the expansion joint comprises a bellows at the center, the reinforcement assembly comprises an inner sleeve fixedly installed in the expansion joint, and an inner reinforcement ring and an outer reinforcement ring respectively arranged and fixedly installed at the inner and outer ends of the inner sleeve, the left end of the inner sleeve is welded to the expansion joint, a fixing ring is also welded to one side of the bellows, and a plurality of reinforcing rods are also arranged and welded to the inner end of the fixing ring.

[0007] Preferably, the inner reinforcement ring and the outer reinforcement ring are arranged alternately at the inner and outer ends of the inner sleeve, and both the inner reinforcement ring and the outer reinforcement ring are annular structures.

[0008] Preferably, the reinforcement component further comprises a plurality of groups of jacks arranged in the inner sleeve, the number of the jacks is equal to the number of the reinforcement rods, and the jacks match the reinforcement rods.

[0009] Preferably, the protective assembly comprises a left protective sleeve and a right protective sleeve respectively fixedly installed on both sides of the expansion joint, and an installation cavity opened in the left protective sleeve, and the right protective sleeve matches the installation cavity.

[0010] Preferably, the protective component further includes a plurality of groups of notches alternately provided at the inner and outer ends of the right protective sleeve, and sealing rings matched and installed in the notches.

[0011] Preferably, the expansion joint further comprises a connecting rod arranged and installed at its outer end.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In the utility model, the inner sleeve at the inner end of the bellows in the expansion joint can rely on multiple sets of inner reinforcement rings and outer reinforcement rings staggered at its inner and outer ends after installation, as well as multiple sets of reinforcement rods arranged and installed in the inner sleeve, to strengthen the strength and impact resistance of the inner and outer ends of the inner sleeve during use of the expansion joint, thereby improving its pressure-bearing strength during use;

[0014] 2. In the utility model, the left protective sleeve and the right protective sleeve installed on both sides of the expansion joint at the outer end of the bellows, as well as the sealing ring installed at the inner and outer ends of the right protective sleeve for multi-layer sealing in the connection with the left protective sleeve, can also realize dust-proof, corrosion-proof and wear-proof protection of the outer end of the bellows, thereby improving the service life of the bellows. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 Another perspective view of the present utility model;

[0017] Figure 3 It is a side sectional view of the utility model;

[0018] Figure 4 For this utility model Figure 3 A magnified view of middle;

[0019] Figure 5 This is a structural diagram of the inner sleeve of the utility model;

[0020] Figure 6 This is an installation diagram of the left protective cover and the right protective cover of the utility model;

[0021] Figure 7 It is a side sectional view of the left protective cover and the right protective cover of the utility model;

[0022] Figure 8 For this utility model Figure 7 Enlarged view of B.

[0023] Reference numerals:

[0024] 100, expansion joint; 101, bellows; 102, connecting rod;

[0025] 200, reinforcement assembly; 201, inner sleeve; 202, inner reinforcement ring; 203, outer reinforcement ring; 204, fixing ring; 205, reinforcement rod; 206, socket;

[0026] 300, protective assembly; 301, left protective cover; 302, right protective cover; 303, installation cavity; 304, notch; 305, sealing ring. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] Embodiment 1:

[0029] like Figure 1-5 As shown, this embodiment provides a high-strength pressure-bearing structure of an expansion joint, including an expansion joint 100, a reinforcement assembly 200 and a protection assembly 300. The expansion joint 100 includes a bellows 101 at the center, and the expansion joint 100 also includes a connecting rod 102 arranged and installed at its outer end. The reinforcement assembly 200 includes an inner sleeve 201 fixedly installed in the expansion joint 100, and an inner reinforcement ring 202 and an outer reinforcement ring 203 arranged and fixedly installed at the inner and outer ends of the inner sleeve 201, respectively. The left end of the inner sleeve 201 is welded to the expansion joint 100. A fixing ring 204 is welded and fixed on one side of the corrugated tube 101, and a plurality of reinforcing rods 205 are arranged and welded on the inner end of the fixing ring 204. The inner reinforcing ring 202 and the outer reinforcing ring 203 are arranged alternately at the inner and outer ends of the inner sleeve 201, and both the inner reinforcing ring 202 and the outer reinforcing ring 203 are annular structures. The reinforcing assembly 200 also includes a plurality of jacks 206 arranged and opened in the inner sleeve 201, and the number of the jacks 206 is equal to the number of the reinforcing rods 205, and the jacks 206 and the reinforcing rods 205 match each other.

[0030] Specifically, the expansion joint 100 refers to a flexible element that can effectively compensate for axial deformation and is often installed on a pipeline. The inner sleeve 201 at the inner end of the bellows 101 in the expansion joint 100 can rely on multiple groups of inner reinforcement rings 202 and outer reinforcement rings 203 arranged alternately at its inner and outer ends after installation, as well as multiple groups of reinforcement rods 205 arranged and installed in the inner sleeve 201, to strengthen the strength and impact resistance of the inner and outer ends of the inner sleeve 201 during use of the expansion joint 100, thereby improving its pressure-bearing strength during use and avoiding the problem of deformation of the inner sleeve 201 due to excessive pressure in the expansion joint 100. The fixing ring 204 fixedly installed on one side of the expansion joint 100 is mainly used to ensure the stability of the multiple groups of reinforcement rods 205 at the inner end.

[0031] Embodiment 2:

[0032] Based on the first embodiment, Figure 6-8As shown, the protection component 300 includes a left protection sleeve 301 and a right protection sleeve 302 respectively fixedly installed on both sides of the expansion joint 100, and an installation cavity 303 opened in the left protection sleeve 301, and the right protection sleeve 302 matches the installation cavity 303. The protection component 300 also includes a plurality of groups of notches 304 staggered at the inner and outer ends of the right protection sleeve 302, and sealing rings 305 matched and installed in the notches 304.

[0033] Specifically, the left protective sleeve 301 and the right protective sleeve 302 installed on both sides of the expansion joint 100 at the outer end of the bellows 101, and the sealing ring 305 installed at the inner and outer ends of the right protective sleeve 302 for multi-layer sealing in the connection with the left protective sleeve 301, can also achieve dust-proof, anti-corrosion and anti-wear protection for the outer end of the bellows 101, thereby improving the service life of the bellows 101.

[0034] The working principle and use process of this utility model:

[0035] When the pressure at the inner end of the expansion joint 100 is relatively high, the internal pressure will squeeze the inner sleeve 201 at the center. When the inner sleeve 201 is subjected to pressure, the multiple groups of inner reinforcement rings 202 and outer reinforcement rings 203 arranged alternately at the inner and outer ends will strengthen the strength of the inner sleeve 201 itself, thereby resisting the pressure from the inner end. At the same time, the multiple groups of reinforcement rods 205 arranged and installed in the inner sleeve 201 can also restrain the axial position of the inner sleeve 201, thereby enhancing its torsional strength. In the expansion joint 100 telescopic buffer, the left protective sleeve 301 and the right protective sleeve 302 engaged on both sides of the outer end can still be strengthened with the multi-layer seal between the mounting cavity 303 through the sealing ring 305 in the recess 304 on both sides of the right protective sleeve 302, thereby preventing external dust, rainwater, and foreign objects from contacting the bellows 101 and increasing its service life.

[0036] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-strength pressure-bearing structure of an expansion joint, comprising an expansion joint (100), a reinforcement component (200) and a protection component (300), wherein the expansion joint (100) comprises a bellows (101) at the center, characterized in that: The reinforcement assembly (200) comprises an inner sleeve (201) fixedly installed in the expansion joint (100), and an inner reinforcement ring (202) and an outer reinforcement ring (203) respectively arranged and fixedly installed at the inner and outer ends of the inner sleeve (201); the left end of the inner sleeve (201) is welded to the expansion joint (100); a fixing ring (204) is also welded to one side of the bellows (101); and a plurality of reinforcement rods (205) are arranged and welded to the inner end of the fixing ring (204).

2. The high-strength pressure-bearing structure of an expansion joint according to claim 1, characterized in that: The inner reinforcement ring (202) and the outer reinforcement ring (203) are arranged alternately at the inner and outer ends of the inner sleeve (201), and both the inner reinforcement ring (202) and the outer reinforcement ring (203) are annular structures.

3. The high-strength pressure-bearing structure of an expansion joint according to claim 1, characterized in that: The reinforcing assembly (200) further comprises a plurality of groups of insertion holes (206) arranged in the inner sleeve (201), the number of the insertion holes (206) being equal to the number of the reinforcing rods (205), and the insertion holes (206) and the reinforcing rods (205) are matched.

4. The high-strength pressure-bearing structure of an expansion joint according to claim 1, characterized in that: The protection assembly (300) comprises a left protection sleeve (301) and a right protection sleeve (302) respectively fixedly installed on both sides of the expansion joint (100), and an installation cavity (303) opened in the left protection sleeve (301), and the right protection sleeve (302) matches the installation cavity (303).

5. The high-strength pressure-bearing structure of an expansion joint according to claim 1, characterized in that: The protection assembly (300) further comprises a plurality of groups of notches (304) alternately provided at the inner and outer ends of the right protection sleeve (302), and sealing rings (305) matched and installed in the notches (304).

6. The high-strength pressure-bearing structure of an expansion joint according to claim 1, characterized in that: The expansion joint (100) further comprises a connecting rod (102) arranged and installed at the outer end thereof.

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