Safety valve for olefin separation device

Abstract

The utility model discloses a safety valve for an olefin separation device in the related technical field of safety valves, which comprises a main valve body and a valve cover arranged above the main valve body, a sliding groove is arranged on the inner wall of the upper portion of the main valve body, a limit matching plate is arranged on the outer side of the sliding groove, a limit groove is arranged on the limit matching plate, and the limit groove is matched with the sliding groove. The groove width of the limiting groove is smaller than that of the sliding groove, and an adjusting pressing block is arranged in the sliding groove. According to the safety valve, the valve plate is driven to move mainly through pressure changes, the pushing block pushes the sealing plug to move upwards along the sliding groove, then the upper connector of the pressure relief communicating pipe is opened, the upper connector and the lower connector are communicated, effective pressure relief is conducted through the one-way valve, and the pressure relief range of the safety valve can be adjusted through the pressure adjusting jackscrew. Limiting matching plates are arranged on the outer sides of the sliding grooves, lifting movement of the sealing plug can be limited, dismounting, mounting and overhauling are facilitated, a sealing gasket is arranged on the sealing face of the sealing plug, and the stability of the sealing state is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field related to safety valves, and specifically relates to a safety valve for an olefin separation device. Background Technique

[0002] Olefins are an important class of organic compounds, widely used in fields such as chemical industry, medicine, and pesticides. Olefin separation is an important link in chemical production, which is of great significance for improving product purity, reducing energy consumption, and increasing production efficiency. In olefin separation work, common methods include distillation, adsorption, crystallization, extraction, etc. Distillation is one of the commonly used methods in olefin separation work. By controlling temperature and pressure, olefins and other components in the mixture are separated. The distillation method has the advantages of simple operation and low cost. During the distillation process, the temperature and air pressure inside the equipment will change. To improve the safety of equipment use, safety valves are usually installed. The existing safety valves have complex structures and are not convenient for overhauling and replacing internal parts.

[0003] In view of this, the present utility model is specifically proposed. Summary of the Invention

[0004] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a safety valve for an olefin separation device. To solve the above technical problem, the basic concept of the technical solution adopted by the present utility model is:

[0005] A safety valve for an olefin separation device includes a main valve body and a valve cover arranged above it. A sliding groove is provided on the inner wall of the upper part of the main valve body. A limit fitting plate is arranged outside the sliding groove. A limit groove is provided on the limit fitting plate. The width dimension of the limit groove is smaller than the width dimension of the sliding groove. An adjusting pressure block is arranged in the sliding groove. The lower part of the adjusting pressure block is connected to a sealing plug through a spring. The sealing plug is also clamped and installed in the sliding groove. An extended adjusting end is fixedly arranged on the outside of the sealing plug. A pushing block is arranged below the extended adjusting end. The side of the pushing block is fixedly connected to a support rod on a valve plate through a connecting rod. A guide ring is sleeved outside the support rod of the valve plate. The guide ring is fixedly installed on the inner wall of the main valve body through a guide frame. The guide ring is used to limit the lifting movement process of the valve plate to ensure the stability of the movement process.

[0006] As a further scheme of the present utility model: A lower limit support ring is fixedly arranged on the inner wall of the main valve body below the valve plate. A sealing sleeve is covered on the outer circle of the valve plate to ensure the sealing performance of the cooperation between the valve plate and the inner wall of the main valve body.

[0007] As a further solution of the present utility model: a check valve is installed at the middle position above the valve cover, a pressure regulating set screw is arranged on the side of the check valve, an adjusting plate is arranged at the lower end of the pressure regulating set screw, the adjusting plate is arranged in the installation groove formed on the adjusting pressing block, and the safety relief pressure of the main valve body is adjusted through the pressure regulating set screw.

[0008] As a further solution of the present utility model: a sealing ring is arranged at the matching position of the pressure regulating set screw and the valve cover, a sealing groove is formed on the top surface of the main valve body, and a sealing ring is arranged in the sealing groove to enhance the sealing performance of the cooperation between the valve cover and the main valve body.

[0009] As a further solution of the present utility model: an installation flange is integrally arranged below the main valve body, and installation holes are processed on the installation flange to facilitate the installation and use of the main valve body.

[0010] As a further solution of the present utility model: an upper joint and a lower joint are arranged on the main valve body, the upper joint and the lower joint are connected and communicated through a pressure relief connecting pipe, and a sealing gasket is arranged on the sealing surface of the sealing plug to enhance the sealing effect.

[0011] As a further solution of the present utility model: the lower joint is located below the lower limit support ring to effectively connect the upper and lower cavities of the main valve body.

[0012] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art.

[0013] The safety valve of the present utility model mainly drives the valve plate to move by using the pressure change, so that the pushing block pushes the sealing plug to move upward along the sliding groove, and then opens the position of the upper joint of the pressure relief connecting pipe, connects the upper and lower parts, and effectively relieves pressure through the check valve.

[0014] The pressure relief range of the safety valve of the present utility model can be adjusted by the pressure regulating set screw. A limit matching plate is arranged outside the sliding groove, which can not only limit the lifting movement of the sealing plug, but also facilitate disassembly, installation and maintenance. A sealing gasket is arranged on the sealing surface of the sealing plug to ensure the stability of the sealing state.

[0015] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0016] The accompanying drawings, as part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a main sectional view of the present utility model;

[0019] Figure 3 is a partial enlarged view at A of the present utility model;

[0020] Figure 4 is a schematic diagram of the sliding groove of the present utility model.

[0021] In the figure: 1, main valve body; 2, valve cover; 3, mounting flange; 4, mounting hole; 5, check valve; 6, pressure regulating set screw; 7, pressure relief connecting pipe; 8, lower joint; 9, upper joint; 10, lower limit support ring; 11, valve plate; 12, sealing sleeve; 13, guide frame; 14, guide ring; 15, connecting rod; 16, pushing block; 17, mounting groove; 18, adjusting pressing block; 19, adjusting plate; 20, limiting groove; 21, sliding groove; 22, spring; 23, sealing plug; 24, extended adjusting end; 25, sealing gasket; 26, sealing groove; 27, sealing ring; 28, sealing ring; 29, limiting and cooperating plate.

[0022] It should be noted that these accompanying drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0024] Such as Figures 1 to 4As shown in the figure, a safety valve for an olefin separation device includes a main valve body 1 and a valve cover 2 arranged above it. A sliding groove 21 is provided on the inner wall of the upper part of the main valve body 1. A limit fitting plate 29 is arranged outside the sliding groove 21. A limit groove 20 is provided on the limit fitting plate 29. The groove width dimension of the limit groove 20 is smaller than that of the sliding groove 21. An adjusting pressure block 18 is arranged in the sliding groove 21. The lower part of the adjusting pressure block 18 is connected to a sealing plug 23 through a spring 22. The sealing plug 23 is also clamped and installed in the sliding groove 21. An extended adjusting end 24 is fixedly arranged on the outside of the sealing plug 23. A pushing block 16 is arranged below the extended adjusting end 24. The side of the pushing block 16 is fixedly connected to a support rod on a valve plate 11 through a connecting rod 15. A guide ring 14 is sleeved on the outside of the support rod of the valve plate 11. The guide ring 14 is fixedly installed on the inner wall of the main valve body 1 through a guide frame 13. The guide ring 14 is used to limit the lifting movement process of the valve plate 11 to ensure the stability of the movement process.

[0025] Among them, a lower limit support ring 10 is fixedly arranged on the inner wall of the main valve body 1 below the valve plate 11. A sealing sleeve 12 is covered on the outer circle of the valve plate 11 to ensure the sealing performance of the cooperation between the valve plate 11 and the inner wall of the main valve body 1.

[0026] A one-way valve 5 is installed at the middle position above the valve cover 2. A pressure regulating set screw 6 is arranged on the side of the one-way valve 5. The lower end of the pressure regulating set screw 6 is provided with an adjusting plate 19. The adjusting plate 19 is arranged in an installation groove 17 provided on the adjusting pressure block 18. The safety relief pressure of the main valve body 1 is adjusted through the pressure regulating set screw 6.

[0027] A sealing ring 28 is arranged at the matching position between the pressure regulating set screw 6 and the valve cover 2. A sealing groove 26 is provided on the top surface of the main valve body 1. A sealing ring 27 is arranged in the sealing groove 26 to enhance the sealing performance of the cooperation between the valve cover 2 and the main valve body 1.

[0028] An installation flange 3 is integrally arranged below the main valve body 1. Installation holes 4 are processed on the installation flange 3 to facilitate the installation and use of the main valve body 1.

[0029] An upper joint 9 and a lower joint 8 are arranged on the main valve body 1. The upper joint 9 and the lower joint 8 are connected through a pressure relief connecting pipe 7. A sealing gasket 25 is arranged on the sealing surface of the sealing plug 23 to enhance the sealing effect.

[0030] The lower joint 8 is located below the lower limit support ring 10 to effectively connect the upper and lower cavities of the main valve body 1.

[0031] The working principle of the utility model is as follows: The safety pressure value of the safety valve can be adjusted by the pressure regulating screw 6. When the spring 22 is in a compressed state, a greater pressure is required to move the valve plate 11 up and down to open the sealing plug 23. Springs 22 of different specifications will also have a greater impact on the pressure value range of the safety valve. Therefore, according to the different use environments and conditions of the safety valve, a spring 22 of the appropriate specification is selected for safety pressure setting. When the pressure at the lower part of the main valve body 1 continuously increases and reaches the preset range, the valve plate 11 moves upward. The connecting rod 15 on the valve plate 11 drives the pushing block 16 to push the sealing plug 23 upward, and the spring 22 is compressed. As the sealing plug 23 moves upward, the upper joint 9 position of the pressure relief connecting pipe 7 is opened, so that the pressure relief connecting pipe 7 is in a connected state. The high-pressure gas enters the upper part of the main valve body 1 and is discharged outward through the one-way valve 5 for pressure relief. When the pressure continuously decreases, the spring 22 resets and drives the sealing plug 23 to move downward to seal the upper joint 9 and stop pressure relief.

[0032] The structure of the present utility model is reasonably designed and convenient for installation and use. The safety valve mainly uses the pressure change to drive the movement of the valve plate 11, so that the pushing block 16 pushes the sealing plug 23 to move upward along the sliding groove 21, thereby opening the upper joint 9 position of the pressure relief connecting pipe 7 and connecting the upper and lower parts. Effective pressure relief is carried out through the one-way valve 5. The pressure relief range of the safety valve can be adjusted by the pressure regulating screw 6. A limit fitting plate 29 is arranged outside the sliding groove 21, which can not only limit the lifting movement of the sealing plug 23, but also facilitate disassembly, installation and maintenance. A sealing gasket 25 is arranged on the sealing surface of the sealing plug 23 to ensure the stability of the sealing state.

[0033] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, may make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A safety valve for an olefin separation device, comprising a main valve body (1) and a valve cover (2) arranged above the main valve body, characterized in that: A sliding groove (21) is provided on the upper inner wall of the main valve body (1), a limit matching plate (29) is provided on the outer side of the sliding groove (21), a limit groove (20) is provided on the limit matching plate (29), the groove width of the limit groove (20) is smaller than the groove width of the sliding groove (21), an adjusting pressure block (18) is provided in the sliding groove (21), the lower side of the adjusting pressure block (18) is connected to the sealing plug (23) via a spring (22), and the sealing plug (23) is also The card is installed in the sliding groove (21), and an extension adjustment end head (24) is fixedly provided on the outer side of the sealing plug (23). A push block (16) is provided below the extension adjustment end head (24). The side of the push block (16) is fixedly connected to the support rod on the valve plate (11) through a connecting rod (15). A guide ring (14) is sleeved on the outer side of the support rod of the valve plate (11), and the guide ring (14) is fixedly installed on the inner wall of the main valve body (1) through a guide frame (13).

2. A safety valve for an olefin separation device according to claim 1, characterized in that: A lower limit support ring (10) is fixedly arranged on the inner wall of the main valve body (1) below the valve plate (11), and a sealing sleeve (12) is arranged on the outer circumference of the valve plate (11).

3. A safety valve for an olefin separation device according to claim 2, characterized in that: A one-way valve (5) is installed in the middle position above the valve cover (2), a pressure regulating screw (6) is arranged on the side of the one-way valve (5), an adjustment plate (19) is arranged at the lower end of the pressure regulating screw (6), and the adjustment plate (19) is arranged in a mounting groove (17) provided on the adjustment pressure block (18).

4. A safety valve for an olefin separation device according to claim 3, characterized in that: A sealing ring (28) is provided at the matching position of the pressure regulating top screw (6) and the valve cover (2), a sealing groove (26) is provided on the top surface of the main valve body (1), and a sealing ring (27) is arranged in the sealing groove (26).

5. A safety valve for an olefin separation device according to claim 4, characterized in that: A mounting flange (3) is integrally provided below the main valve body (1), and a mounting hole (4) is machined on the mounting flange (3).

6. A safety valve for an olefin separation device according to claim 5, characterized in that: An upper joint (9) and a lower joint (8) are provided on the main valve body (1); the upper joint (9) and the lower joint (8) are connected via a pressure relief connecting pipe (7); and a sealing gasket (25) is provided on the sealing surface of the sealing plug (23).

7. A safety valve for an olefin separation device according to claim 6, characterized in that: The lower joint (8) is located below the lower limit support ring (10).

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