Catalytic cracking expansion joint

Abstract

The utility model discloses a catalytic cracking expansion joint which comprises an expansion joint shell, an expansion limiting mechanism is fixedly installed on the outer surface of the expansion joint shell, expansion joint size adjusting mechanisms are movably connected to the two sides of the inner wall of the expansion joint shell, and the expansion joint size adjusting mechanisms are fixedly connected with the expansion limiting mechanism through fixing mechanisms. According to the catalytic cracking expansion joint, the size of the expansion joint can be adjusted through the expansion joint size adjusting mechanism and the matched arrangement of the fixing mechanism, so that the stress of the expansion joint can be smaller when the expansion joint is stressed during catalytic cracking.

Description

Technical Field

[0001] This utility model relates to the technical field of expansion joints, specifically to expansion joints for catalytic cracking. Background Technology

[0002] Expansion joints, also commonly called compensators or expansion joints, consist of a bellows (an elastic element) as their main working component, along with end pipes, supports, flanges, conduits, and other accessories. Expansion joints are flexible structures installed on container shells or pipelines to compensate for additional stress caused by temperature differences and mechanical vibrations. They utilize the effective expansion and contraction deformation of their main working component, the bellows, to absorb dimensional changes in pipelines, conduits, and containers caused by thermal expansion and contraction, or to compensate for axial, lateral, and angular displacements. They can also be used for noise reduction and vibration damping. In heating systems, to prevent pipeline deformation or damage due to thermal expansion or temperature stress during heating, compensators are installed to compensate for thermal expansion, thereby reducing stress on the pipe walls and the forces acting on valves or support structures. Currently, expansion joints cannot be adjusted in size according to the corresponding pressure, resulting in a short service life.

[0003] Currently used expansion joints sometimes deform in one direction due to excessive force during use, without being counteracted by lateral forces, resulting in poor stability during use. Utility Model Content

[0004] The purpose of this invention is to provide a catalytic cracking expansion joint to solve the problem mentioned in the background art: the expansion joint currently in use sometimes deforms in one direction due to excessive force, without being counteracted by lateral forces, resulting in poor stability during use.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a catalytic cracking expansion joint, comprising an expansion joint shell, an expansion limiting mechanism fixedly installed on the outer surface of the expansion joint shell, and an expansion joint size adjustment mechanism movably connected to both sides of the inner wall of the expansion joint shell, wherein the expansion joint size adjustment mechanism is fixedly connected to the expansion limiting mechanism through a fixing mechanism.

[0006] Preferably, the expansion limiting mechanism includes an external thread, an external ring, a connecting shaft, a side plate, a limiting groove, and a contact piece. The external thread is fixedly installed in the inner wall interlayer of the expansion joint housing. External rings are fixedly installed on both sides of the center of the outer surface of the expansion joint housing. The connecting shaft is connected to the upper and lower sides of the outer wall of the external ring. Side plates are fixedly installed on both sides of the outer surface of the expansion joint housing. Limiting grooves are formed on the upper and lower sides of the inner wall of the side plate. A contact piece is welded to one side of the inner wall of the limiting groove.

[0007] Preferably, the connecting shaft forms a sliding structure with the side receiving plate through the limiting groove, and the connecting shaft is distributed in a ring array on the outer ring.

[0008] Preferably, the expansion joint size adjustment mechanism includes a connecting pipe and a limiting strip. The connecting pipes are disposed on both sides of the inner wall of the expansion joint housing, and the connecting pipes are movably connected to the expansion joint housing through the limiting strip.

[0009] Preferably, the fixing mechanism includes a connecting block, a side panel, a threaded rod, and a fixing block. The connecting blocks are all connected and installed on the upper and lower outer walls of the connecting pipe. A side panel is welded and installed on one side of the outer wall of the connecting block. A threaded rod is fixedly installed on one side of the inner wall of the side panel. Fixing blocks are fixedly installed on both the upper and lower outer walls of the outer ring.

[0010] Preferably, the side panel is threadedly connected to the outer ring via a fixing block, and the side panel is symmetrically arranged with respect to the central axis of the expansion joint housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The catalytic cracking expansion joint, through the expansion joint size adjustment mechanism and the fixing mechanism, can adjust the size of the expansion joint, so that the expansion joint can be subjected to less stress during catalytic cracking.

[0013] 2. This catalytic cracking expansion joint, by setting an expansion limiting mechanism, can limit the position of deformation when the expansion joint is expanding and deforming, and at the same time keep it within a certain range during deformation. Attached Figure Description

[0014] Figure 1 This is a front view of the present utility model;

[0015] Figure 2 This is a diagram of the expansion limiting mechanism of this utility model;

[0016] Figure 3 This is a diagram of the expansion joint size adjustment mechanism of this utility model;

[0017] Figure 4This is a diagram of the fixing mechanism of this utility model.

[0018] In the diagram: 1. Expansion joint housing; 2. Expansion limiting mechanism; 201. External thread; 202. External connecting ring; 203. Connecting shaft; 204. Side receiving plate; 205. Limiting groove; 206. Contact piece; 3. Expansion joint size adjustment mechanism; 301. Connecting pipe; 302. Limiting strip; 4. Fixing mechanism; 401. Connecting block; 402. Side panel; 403. Threaded rod; 404. Fixing block. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a catalytic cracking expansion joint, including an expansion joint shell 1. An expansion limiting mechanism 2 is fixedly installed on the outer surface of the expansion joint shell 1. The expansion limiting mechanism 2 includes an external thread 201, an external ring 202, a connecting shaft 203, a side receiving plate 204, a limiting groove 205, and a contact piece 206. The external thread 201 is fixedly installed in the inner wall interlayer of the expansion joint shell 1. External rings 202 are fixedly installed on both sides of the center of the outer surface of the expansion joint shell 1. The connecting shaft 203 is connected to the upper and lower sides of the outer wall of the external ring 202. Side receiving plates 204 are fixedly installed on both sides of the outer surface of the expansion joint shell 1. Limiting grooves 205 are formed on the upper and lower sides of the inner wall of the side receiving plate 204. A contact piece 206 is welded on one side. During expansion and deformation, the external thread 201 will deform, which allows the external thread 201 to drive the connecting shaft 203 to move within the inner wall of the limiting groove 205. At the same time, the contact piece 206 can abut against the connecting shaft 203, thus allowing the expansion and deformation to have a certain range and limiting the position of the deformation. The connecting shaft 203 forms a sliding structure with the side plate 204 through the limiting groove 205, and the connecting shaft 203 is distributed in a ring array on the outer ring 202. This can disperse the pressure generated by the expansion joint and limit the position of the expansion deformation, increase the contact area of ​​the expansion deformation, and thus enhance the stability of the expansion joint in use.

[0021] Both sides of the inner wall of the expansion joint housing 1 are movably connected to an expansion joint size adjustment mechanism 3. The expansion joint size adjustment mechanism 3 includes a connecting pipe 301 and a limiting strip 302. The connecting pipes 301 are both located on both sides of the inner wall of the expansion joint housing 1. The connecting pipes 301 are movably connected to the expansion joint housing 1 through the limiting strip 302. Moving the connecting pipes 301 causes the limiting strip 302 to move within the inner wall of the expansion joint housing 1, thereby adjusting the size of the expansion joint. This allows the size of the expansion joint to be extended according to the intensity of the catalytic cracking process, thereby dissipating the force generated by catalytic cracking from all directions.

[0022] The expansion joint size adjustment mechanism 3 is fixedly connected to the expansion limiting mechanism 2 via a fixing mechanism 4. The fixing mechanism 4 includes a connecting block 401, a side panel 402, a threaded rod 403, and a fixing block 404. The connecting blocks 401 are all connected and installed on the upper and lower outer walls of the connecting pipe 301. The side panel 402 is welded and installed on one side of the outer wall of the connecting block 401, and the threaded rod 403 is fixedly installed on one side of the inner wall of the side panel 402. The fixing blocks 404 are fixedly installed on both the upper and lower outer walls of the outer connecting ring 202. When the connecting pipe 301 moves... The side panel 402 mounted on the outer wall of the connecting block 401 can move left and right, and the threaded rod 403 can be rotated to fix it in the inner wall of the fixing block 404. This can fix the size of the expansion joint adjustment. The side panel 402 is threadedly connected to the outer ring 202 through the fixing block 404, and the side panel 402 is symmetrically arranged with respect to the central axis of the expansion joint housing 1. This can fix the relative position of the connecting pipe 301 and the expansion joint housing 1 to prevent instability when the expansion joint is connected to the connecting device.

[0023] Working principle: First, place the device in the designated position. Move the connecting pipe 301 to make the limiting strip 302 move within the inner wall of the expansion joint housing 1. This allows for adjustment of the expansion joint size, which can be extended according to the intensity of the catalytic cracking process. This allows for stress relief from the forces generated by catalytic cracking from various directions. When the connecting pipe 301 moves, it can cause the side panel 402 mounted on the outer wall of the connecting block 401 to move left and right. Rotate the threaded rod 403 to fix it within the inner wall of the fixing block 404, thus fixing the adjusted size of the expansion joint. During expansion deformation, the external thread 201 will deform. This external thread 201 can cause the connecting shaft 203 to move within the inner wall of the limiting groove 205. At the same time, the contact piece 206 can abut against the connecting shaft 203, thus allowing the expansion deformation to have a certain range and limiting the deformation position. This completes the operation process of the catalytic cracking expansion joint.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A catalytic cracking expansion joint, characterized in that, The expansion joint includes an expansion joint housing (1), an expansion limiting mechanism (2) is fixedly installed on the outer surface of the expansion joint housing (1), and an expansion joint size adjustment mechanism (3) is movably connected to both sides of the inner wall of the expansion joint housing (1). The expansion joint size adjustment mechanism (3) is fixedly connected to the expansion limiting mechanism (2) through a fixing mechanism (4).

2. The catalytic cracking expansion joint according to claim 1, characterized in that: The expansion limiting mechanism (2) includes an external thread (201), an external ring (202), a connecting shaft (203), a side plate (204), a limiting groove (205), and a contact piece (206). The external thread (201) is fixedly installed in the inner wall interlayer of the expansion joint housing (1). The external ring (202) is fixedly installed on both sides of the center of the outer surface of the expansion joint housing (1). The connecting shaft (203) is connected to the upper and lower sides of the outer wall of the external ring (202). The side plate (204) is fixedly installed on both sides of the outer surface of the expansion joint housing (1). The upper and lower sides of the inner wall of the side plate (204) are provided with limiting grooves (205). A contact piece (206) is welded to one side of the inner wall of the limiting groove (205).

3. The catalytic cracking expansion joint according to claim 2, characterized in that: The connecting shaft (203) forms a sliding structure with the side plate (204) through the limiting groove (205), and the connecting shaft (203) is distributed in a ring array on the outer ring (202).

4. The catalytic cracking expansion joint according to claim 3, characterized in that: The expansion joint size adjustment mechanism (3) includes a connecting pipe (301) and a limiting strip (302). The connecting pipe (301) is provided on both sides of the inner wall of the expansion joint shell (1). The connecting pipe (301) is movably connected to the expansion joint shell (1) through the limiting strip (302).

5. The catalytic cracking expansion joint according to claim 4, characterized in that: The fixing mechanism (4) includes a connecting block (401), a side panel (402), a threaded rod (403), and a fixing block (404). The connecting blocks (401) are all connected and installed on the upper and lower outer walls of the connecting pipe (301). The side panel (402) is welded and installed on one side of the outer wall of the connecting block (401). The threaded rod (403) is fixedly installed on one side of the inner wall of the side panel (402). The fixing blocks (404) are fixedly installed on both the upper and lower outer walls of the outer ring (202).

6. The catalytic cracking expansion joint according to claim 5, characterized in that: The side panel (402) is threadedly connected to the outer ring (202) via a fixing block (404), and the side panel (402) is symmetrically arranged with respect to the central axis of the expansion joint housing (1).

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