High chrome lined abrasion resistant corrugated compensator

Abstract

The utility model relates to corrugated compensator technical field discloses a kind of high-chromium lining wear-resistant corrugated compensator, including pipe body, pipe body includes corrugated part, first straight pipe part, second straight pipe part;Pipe body inside is equipped with sheath pipe, wherein, first straight pipe part or second straight pipe part is equipped with the fixed structure for fixed sheath pipe, sheath pipe is equipped with the matching hole for cooperation fixed structure, matching hole is located on the radial surface of sheath pipe. Through the above technical scheme, the problem that welding is used to fix sheath pipe and corrugated pipe in the prior art, which can leave welding marks and affect the flow efficiency of fluid, is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of corrugated compensators, and in particular to a high-chromium lined wear-resistant corrugated compensator. Background Technology

[0002] A corrugated compensator is generally a flexible connection device used to absorb dimensional changes in pipelines, containers, or equipment caused by thermal expansion and contraction, vibration, or displacement.

[0003] Currently, in order to improve the wear resistance of bellows compensators and extend their service life, a sheath made of wear-resistant materials such as high-chromium alloys (such as Cr27 and Cr30) is installed inside the bellows to prevent the flowing fluid from wearing down the bellows.

[0004] Existing sheaths are usually connected to bellows by welding. While this method can ensure the connection strength between the sheath and the bellows, it can also easily leave weld marks between them, thereby increasing flow resistance and affecting fluid flow efficiency. Utility Model Content

[0005] The main purpose of this invention is to provide a high-chromium lined wear-resistant corrugated compensator, which aims to solve the problem that welding marks are easily left when fixing the sheath and corrugated pipe by welding in related technologies, thus affecting the fluid flow efficiency.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A high-chromium lined wear-resistant corrugated compensator includes a tube body, which includes a corrugated section, a first straight tube section, and a second straight tube section. A sheath is provided inside the tube body. A fixing structure for fixing the sheath is provided on the first straight tube section or the second straight tube section. A mating hole for engaging the fixing structure is provided on the sheath, and the mating hole is located on the radial surface of the sheath.

[0008] Furthermore, the fixing structure includes a thickening block, a fixing hole, and a fixing member. The thickening block is fixedly disposed on the pipe body, the fixing hole penetrates the thickening block and the pipe body, and the fixing member is threadedly connected to the fixing hole and abuts against the mating hole.

[0009] Furthermore, the fastener includes a threaded portion and a pin portion, wherein the diameter of the pin portion is smaller than the diameter of the threaded portion.

[0010] Furthermore, each of the fixed structures and mating holes is provided in a plurality of manner, and each of the mating holes and fixed structures is evenly distributed around the circumference of the tube body, with each fixed structure corresponding to a mating hole one by one.

[0011] Furthermore, the tube body is provided with a positioning block, and the sheath tube is provided with a positioning groove for the positioning block to be embedded.

[0012] Furthermore, the longitudinal section of the sheath tube is an "H" shaped structure, and the positioning groove extends through the end away from the fixed structure.

[0013] Furthermore, each of the positioning grooves and positioning blocks is provided in a plurality of them, and each of the positioning grooves and positioning blocks is distributed circumferentially around the tube body.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] This utility model mainly includes a pipe body and a sheath. The pipe body is provided with a fixing structure, and the sheath is provided with a mating hole for cooperating with the fixing structure. That is, the technical solution of this utility model uses the mutual cooperation between the fixing structure and the mating hole to fix the sheath and the pipe body. Since the mating hole is located on the radial surface of the sheath, it can effectively avoid the fixing structure and the mating hole being on the fluid flow path, thereby avoiding the fixing structure and the mating hole affecting the normal flow of fluid. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0018] Figure 2 This is a cross-sectional view of this embodiment;

[0019] Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle;

[0020] Figure 4 This is an exploded view of this embodiment;

[0021] Figure 5 for Figure 4 Enlarged view of a section at point B in the middle;

[0022] Figure 6 for Figure 4 Enlarged view of a section at point C.

[0023] Explanation of icon numbers:

[0024] 1. Pipe body; 11. Corrugated section; 12. First straight pipe section; 13. Second straight pipe section; 14. Positioning block; 2. Sheath tube; 21. Mating hole; 22. Positioning groove; 3. Fixing structure; 31. Thickening block; 32. Fixing hole; 33. Fixing component; 331. Threaded section; 332. Pin section.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] like Figures 1-3 As shown, this embodiment proposes a high-chromium lined wear-resistant corrugated compensator, mainly including a tube body 1. The tube body 1 itself includes a corrugated section 11, a first straight tube section 12, and a second straight tube section 13. The first straight tube section 12 and the second straight tube section 13 are respectively located on both sides of the corrugated section 11. A sheath tube 2 is provided inside the tube body 1. A fixing structure 3 for fixing the sheath tube 2 is provided on the first straight tube section 12 or the second straight tube section 13. A mating hole 21 for cooperating with the fixing structure 3 is provided on the sheath tube 2. The mating hole 21 is located on the radial surface of the sheath tube 2. In this way, the fixing structure 3 and the mating hole 21 can be avoided from being located on the fluid flow path, thereby avoiding the fixing structure 3 and the mating hole 21 from affecting the normal flow of fluid.

[0028] The fixing structure 3 includes a thickening block 31, a fixing hole 32, and a fixing member 33. The thickening block 31 is fixedly disposed on the pipe body 1. Preferably, the thickening block 31 and the pipe body 1 are integrally formed to ensure the connection strength between the two. The fixing hole 32 penetrates the thickening block 31 and the pipe body 1. The fixing member 33 is threadedly connected to the fixing hole 32 and abuts against the mating hole 21. That is, the presence of the thickening block 31 can effectively expand the points for threaded connection of the fixing member 33, ensuring the fixing strength of the fixing member 33 in this embodiment. That is, the fixing member 33 and the mating hole 21 are fixed in the pipe body 1 by means of a pin.

[0029] The fastener 33 includes a threaded portion 331 and a pin portion 332. The threaded portion 331 is threadedly connected to the fixing hole 32. The diameter of the pin portion 332 is smaller than the diameter of the threaded portion 331. In this way, while ensuring the connection strength between the fastener 33 and the fixing hole 32, the number of rotations when the fastener 33 moves to the designated position is reduced, effectively improving the installation efficiency of the fastener 33.

[0030] Meanwhile, the fixing structure 3 and the mating hole 21 are provided in multiples, that is, the fixing structure 3 and the mating hole 21 are redundantly designed to improve the installation fault tolerance of this embodiment. Each mating hole 21 and the fixing structure 3 are evenly distributed around the tube body 1, and each fixing structure 3 corresponds to the mating hole 21 one by one, so that the fixing force load between the fixing sheath tube 2 and the tube body 1 can be evenly distributed between the sheath tube 2 and the tube body 1, avoiding local stress concentration and extending the service life of this embodiment.

[0031] In order to quickly align the mating holes 21 with the fixing holes 32 and improve the assembly efficiency of this embodiment, such as... Figures 4-6 As shown, in this embodiment, the tube body 1 is provided with a positioning block 14, and the sheath tube 2 is provided with a positioning groove 22 for the positioning block 14 to be embedded. That is, by means of the absolute positional relationship between the positioning structure (positioning groove 22 and positioning block 14) and the fixing structure 3, after the positioning groove 22 and each positioning block 14 are fitted together, it can be confirmed that each fixing hole 32 and each mating hole 21 are coaxially designed, thereby realizing the rapid mating between each mating hole 21 and the fixing structure 3.

[0032] Specifically, when the positioning block 14 and the positioning groove 22 cooperate with each other, they will constrain the rotational movement of the sheath tube 2. Thus, whether the sheath tube 2 can rotate in the tube body 1 can be used to determine whether the sheath tube 2 is installed in the designated position.

[0033] The longitudinal section of the sheath tube 2 is an "H"-shaped structure. The positioning groove 22 passes through the end away from the fixed structure 3. Correspondingly, the sheath tube 2 includes a first disc and a second disc. The positioning groove 22 passes through the second disc along the axial direction of the sheath tube 2, but does not pass through the first disc, so that the sheath tube 2 can be inserted into the tube body 1 in a specified direction to complete the installation of the sheath tube 2 in the tube body 1. Moreover, the first disc, relative to the second disc, can take advantage of its position to contact the fluid first, thereby avoiding the need for the positioning groove 22 to directly face the fluid. With the help of the inertia of the fluid flow, it can effectively prevent the fluid from entering the gap between the sheath tube 2 and the tube body 1 along the positioning groove 22 (the part opened on the second disc). If necessary, a second positioning block can be added to cooperate with the second disc (the part of the positioning groove 22 opened on the second disc). The second positioning block has the same structure as the positioning block 14, with the only difference being their positions (the two sides and the sides used to cooperate with the positioning groove 22 are respectively set flush with each other). Thus, the positioning groove 22 located on the second plate is effectively sealed by the second positioning block, effectively preventing fluid intrusion. The "H"-shaped sheath tube 2 can effectively reduce the contact area between it and the tube body 1, thereby reducing the wear between the sheath tube 2 and the tube body 1 during the installation of the sheath tube 2. Furthermore, since the contact area between the sheath tube 2 and the tube body 1 is small, when conveying high-temperature fluid using this embodiment, the heat transfer can be effectively isolated, heat accumulation can be reduced, and the tube body 1 (especially the corrugated part 11 of the tube body 1) can be protected from high temperature, ensuring that the tube body 1 can perform compensation work normally.

[0034] The positioning groove 22, positioning block 14, and second positioning block are all provided in multiples, which is a redundant design of the positioning structure in this embodiment to ensure the fault tolerance of this embodiment; each positioning groove 22 and positioning block 14 is circumferentially distributed around the tube body 1 to ensure that each positioning structure can help to disperse the load when constraining the sheath tube 2, avoid local stress concentration, and extend the service life of this embodiment.

[0035] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0036] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-chromium lined wear-resistant corrugated compensator, comprising a tube body (1), wherein the tube body (1) comprises a corrugated section (11), a first straight tube section (12), and a second straight tube section (13); wherein a sheath tube (2) is provided inside the tube body (1), characterized in that, The first straight tube section (12) or the second straight tube section (13) is provided with a fixing structure (3) for fixing the sheath tube (2), and the sheath tube (2) is provided with a mating hole (21) for cooperating with the fixing structure (3), and the mating hole (21) is located on the radial surface of the sheath tube (2).

2. The high-chromium lined wear-resistant corrugated compensator according to claim 1, characterized in that, The fixing structure (3) includes a thickening block (31), a fixing hole (32), and a fixing member (33). The thickening block (31) is fixedly installed on the pipe body (1). The fixing hole (32) passes through the thickening block (31) and the pipe body (1). The fixing member (33) is threaded to the fixing hole (32) and abuts against the mating hole (21).

3. The high-chromium lined wear-resistant corrugated compensator according to claim 2, characterized in that, The fastener (33) includes a threaded portion (331) and a pin portion (332), wherein the diameter of the pin portion (332) is smaller than the diameter of the threaded portion (331).

4. The high-chromium lined wear-resistant corrugated compensator according to any one of claims 1 to 3, characterized in that, The fixed structure (3) and the mating hole (21) are provided in a plurality of ways. Each of the mating holes (21) and the fixed structure (3) are evenly distributed around the tube body (1) in a circle. Each of the fixed structures (3) corresponds one-to-one with the mating hole (21).

5. The high-chromium lined wear-resistant corrugated compensator according to claim 1, characterized in that, The tube body (1) is provided with a positioning block (14), and the sheath tube (2) is provided with a positioning groove (22) for the positioning block (14) to be embedded.

6. The high-chromium lined wear-resistant corrugated compensator according to claim 5, characterized in that, The longitudinal section of the sheath tube (2) is an "H" shaped structure, and the positioning groove (22) passes through the end away from the fixed structure (3).

7. The high-chromium lined wear-resistant corrugated compensator according to claim 5 or 6, characterized in that, The positioning groove (22) and positioning block (14) are provided in several ways, and each positioning groove (22) and positioning block (14) is distributed circumferentially around the tube body (1).

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