A special top cover for pressure vessel

Abstract

The utility model discloses a pressure vessel technical field's special top cover of pressure vessel, including the body of pressure vessel and the cover of the body top cover, the cover top fixed mounting is used to monitor the barometer of air pressure, the bottom of cover and is close to the central place and has the embedding portion of downward extension, install the sealing element between embedding portion and the body, and the cover is fixed after being covered in the body top and is locked, and the cover and embedding portion and the body top and inboard wall are double -coated and sealed with sealing element, and air pressure can be upward to the sealing element and exhaust element can be downward to the sealing element, improve the sealing property that the cover and the body carry out the sealing, when needing exhaust, make exhaust element drive sealing element and move upward, so as to discharge gas in time.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessels, specifically a top cover for pressure vessels. Background Technology

[0002] A pressure vessel is a sealed container capable of withstanding pressure. Pressure vessels have extremely wide applications and play an important role in many sectors of industry, civil use, military industry, and scientific research. In the chemical and petrochemical industries, pressure vessels are mainly used for heat transfer, mass transfer, reaction processes, and the storage and transportation of pressurized gases or liquefied gases. They are also widely used in other industrial and civil fields, such as pressure cookers, air compressors, various special compressors, and auxiliary equipment of refrigeration compressors (coolers, gas storage tanks, liquid coolant storage tanks, etc.).

[0003] In the safe operation system of pressure vessels (such as reactors, storage tanks, and autoclaves), the sealing performance and venting controllability of the top cover are the core links to ensure equipment reliability. The current sealing and venting design of pressure vessel top covers has significant technical defects, making it difficult to meet the safety requirements under high temperature, high pressure, and multi-media conditions. Most existing pressure vessel top covers adopt a single sealing structure, which is obviously insufficient under complex operating conditions. The failure risk of a single seal is a concern. Traditional top covers rely on a single seal of rubber gaskets (such as nitrile rubber and fluororubber) or metal bellows. When the medium pressure fluctuates (such as a sudden increase from 0.5MPa to 2MPa), the gasket is prone to elastic fatigue, resulting in a decrease in the sealing specific pressure. Under high temperature conditions, traditional sealing materials (such as asbestos gaskets) will experience a decrease in compressibility due to thermal aging, while metal seals will produce gaps due to differences in thermal expansion coefficients.

[0004] Furthermore, the existing top cover venting design struggles to balance operational efficiency and sealing protection. The venting structure suffers from independence defects. Traditional pressure vessels require additional venting valves (such as ball valves or needle valves) to vent, and the separation of the valve passage from the sealing surface leads to two leakage risks. There is also the problem of mutual interference between venting and sealing: when manually opening the venting valve, the top cover bolts must be loosened first to reduce the sealing pressure, which can easily cause the sealing gasket to shift. Therefore, a special top cover for pressure vessels needs to be designed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a top cover specifically for pressure vessels to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure vessel top cover, comprising a pressure vessel body and a cover body placed on top of the body, wherein a pressure gauge for monitoring air pressure is fixedly installed on the top of the cover body, and an embedded part extends downward from the bottom of the cover body near the center, wherein a sealing element is installed between the embedded part and the body body, and multiple sets of venting elements arranged in a circle are installed at the bottom of the cover body above the sealing element.

[0007] Preferably, the sealing element includes a sealing ring laid at the bottom of the cover body, a first sealing ring fixedly installed on the outside of the embedded part and near the bottom, a second sealing ring slidably installed on the outside of the embedded part and above the first sealing ring, an extension fixedly connected to the inner ring of the sealing ring, and a plurality of evenly arranged protrusions extending from the edge of the second sealing ring, the protrusions fitting against the extension.

[0008] Preferably, the exhaust component includes a notch formed on the outside of the embedded portion, and two exhaust pipes are fixedly installed on the top of the notch, with a sealing cap screwed onto the top of the exhaust pipe.

[0009] Preferably, the exhaust component further includes a plurality of movable cavities arranged circumferentially on the inner side of the cover body, with a screw threaded through the inner side of each movable cavity, and a connecting plate mounted on the screw via a fixing part, the other end of which is fixedly connected to a second sealing ring.

[0010] Preferably, a guide rod is fixedly installed on the top of the inner side of the movable cavity, and a spring for pressing the connecting plate is fitted on the outer side of the guide rod.

[0011] Preferably, a sealing part is fixedly connected to the bottom of the second sealing ring, and a sealing groove is provided on the top of the first sealing ring.

[0012] Preferably, a guide block is installed on the other side of the connecting plate, and the guide block is slidably connected to the movable cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The pressure gauge penetrates the cover and enters the main body to monitor air pressure. The cross-section of the embedded part is arc-shaped, so that the cover forms a T-shape. After the cover is placed on the top of the main body, it is locked and fixed. The sealing element is used to double-fit and seal the cover and embedded part with the top and inner wall of the main body. The air pressure can push the sealing element upward and the venting element can press the sealing element downward, which improves the sealing performance between the cover and the main body. When it is necessary to vent, the venting element drives the sealing element to move upward so as to release the gas in time and avoid damage caused by excessive air pressure.

[0015] 2. The sealing ring and the extension have an L-shaped cross section. The sealing ring at the bottom of the cover is pressed against the top of the body. The first sealing ring and the second sealing ring both have an L-shaped cross section. The first sealing ring and the second sealing ring interlock with each other. Multiple protrusions on one side of the second sealing ring are embedded into the extension on one side of the sealing ring and fit tightly together, improving the sealing performance of the splicing buckle between the cover and the body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0018] Figure 3 This is a left-side sectional perspective view of the overall structure of this utility model;

[0019] Figure 4 The overall structure of this utility model Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the overall structure of the present invention, including the sealing ring, the first sealing ring, the second sealing ring, the extension, and the protrusion.

[0021] In the diagram: 1. Body; 2. Cover; 3. Pressure gauge; 4. Embedded part; 5. Sealing ring; 6. First sealing ring; 7. Second sealing ring; 8. Extension part; 9. Protrusion part; 10. Notch; 11. Exhaust pipe; 12. Sealing cap; 13. Movable cavity; 14. Screw; 15. Connecting plate; 16. Guide rod; 17. Spring; 18. Sealing part; 19. Sealing groove; 20. Guide block. Detailed Implementation

[0022] 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.

[0023] Example 1

[0024] Please refer to Figures 1-5As shown, this utility model provides a special top cover for pressure vessels, including a pressure vessel body 1 and a cover 2 covering the top of the body 1. A pressure gauge 3 for monitoring air pressure is fixedly installed on the top of the cover 2. An embedded part 4 extends downward from the bottom of the cover 2 near the center. A sealing element is installed between the embedded part 4 and the body 1. Multiple sets of exhaust elements arranged in a circle are installed at the bottom of the cover 2 above the sealing element.

[0025] It should be noted that the original exhaust valve, safety valve, and other structures can all be used normally in the cover 2 described in this article. The exhaust valve, safety valve, and other structures are existing technologies and are not described in detail in this article. The pressure gauge 3 penetrates the cover 2 and enters the body 1 to monitor the air pressure. The cross-section of the embedded part 4 is arc-shaped so that the cover 2 forms a T-shape. After the cover 2 is placed on the top of the body 1, it is locked and fixed. The sealing element is used to double-fit and seal the cover 2 and the embedded part 4 with the top and inner side wall of the body 1. The air pressure can push the sealing element upward and the exhaust element can press the sealing element downward, which improves the sealing performance between the cover 2 and the body 1. When it is necessary to exhaust, the exhaust element drives the sealing element to move upward so as to release the gas in time and avoid damage caused by excessive air pressure.

[0026] Specifically, the sealing element includes a sealing ring 5 laid at the bottom of the cover body 2, a first sealing ring 6 fixedly installed on the outside of the embedded part 4 and near the bottom, a second sealing ring 7 slidably installed on the outside of the embedded part 4 and above the first sealing ring 6, an extension part 8 fixedly connected to the inner ring of the sealing ring 5, a plurality of evenly arranged protrusions 9 extending from the edge of the second sealing ring 7, the protrusions 9 fitting with the extension part 8, a sealing part 18 fixedly connected to the bottom of the second sealing ring 7, and a sealing groove 19 opened at the top of the first sealing ring 6.

[0027] Among them, the sealing ring 5 and the extension 8 have an L-shaped cross section. The sealing ring 5 at the bottom of the cover 2 is pressed onto the top of the body 1. The first sealing ring 6 and the second sealing ring 7 both have an L-shaped cross section. The first sealing ring 6 and the second sealing ring interlock with each other. At the same time, the sealing part 18 is embedded in the sealing groove 19 for sealing again. Multiple protrusions 9 on one side of the second sealing ring 7 are embedded into the extension 8 on one side of the sealing ring 5 and fit tightly together, improving the sealing performance of the splicing and snapping of the cover 2 and the body 1.

[0028] More specifically, the exhaust component includes a notch 10 opened on the outside of the embedded part 4, two exhaust pipes 11 are fixedly installed on the top of the notch 10, and a sealing cap 12 is screwed to the top of the exhaust pipe 11. The exhaust component also includes a plurality of movable cavities 13 arranged circumferentially on the inside of the cover body 2. A screw 14 passes through the inside of the movable cavity 13. A connecting plate 15 is installed on the screw 14 through the fixing part 141. The other end of the connecting plate 15 is fixedly connected to the second sealing ring 7. A guide rod 16 is fixedly installed on the top of the inside of the movable cavity 13. A spring 17 for pressing the connecting plate 15 is fitted on the outside of the guide rod 16. A guide block 20 is installed on the other side of the connecting plate 15. The guide block 20 is slidably connected to the movable cavity 13.

[0029] Furthermore, the first sealing ring 6 and the second sealing ring 7 are located on one side of the notch 10. The screw 14 can drive the connecting plate 15 to move up and down through the fixing part 141. The sealing cap 12 is screwed to the exhaust pipe 11 to prevent gas from overflowing and to seal it. When it is necessary to exhaust gas, the sealing cap 12 is removed, and the screw 14 is used to drive the connecting plate 15 to move upward through the fixing part 141, so that the connecting plate 15 drives the second sealing ring 7 to move upward and separate from the first sealing ring 6. That is, a gap is created between the first sealing ring 6 and the second sealing ring 7 to facilitate gas discharge.

[0030] Among them, the spring 17 on the outside of the guide rod 16 can press down the connecting plate 15 to increase the contact strength of the second sealing ring 7 embedded in the first sealing ring 6, and the guide block 20 can guide and limit the connecting plate 15 to prevent the connecting plate 15 from shifting and affecting the sealing performance of the second sealing ring 7.

[0031] Working principle: First, the cover 2 is installed and fixed to the top of the main body 1. At this time, the sealing ring 5 at the bottom of the cover 2 is pressed against the top of the main body 1, the first sealing ring 6 and the second sealing ring are engaged with each other, and the sealing part 18 is embedded in the sealing groove 19 to seal again. The multiple protrusions 9 on one side of the second sealing ring 7 are embedded in the extension 8 on one side of the sealing ring 5 and fit tightly. Then, the screw 14 is rotated so that it drives the connecting plate 15 to move downward through the fixing part 141. At the same time, the connecting plate 15 drives the guide block 20 to slide in the movable cavity 13. Meanwhile, the spring 17 on the outside of the guide rod 16 presses down on the connecting plate 15 so that the first sealing ring 6 and the second sealing ring 7 fit tightly together.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pressure vessel top cover, comprising a pressure vessel body (1) and a cover (2) disposed on top of the body (1), characterized in that: A barometer (3) for monitoring air pressure is fixedly installed on the top of the cover (2). An embedded part (4) extends downward from the bottom of the cover (2) near the center. A sealing element is installed between the embedded part (4) and the body (1). Multiple sets of exhaust elements arranged in a circle are installed at the bottom of the cover (2) above the sealing element.

2. The pressure vessel top cover according to claim 1, characterized in that: The sealing element includes a sealing ring (5) laid at the bottom of the cover (2), a first sealing ring (6) fixedly installed on the outside of the embedded part (4) and near the bottom, a second sealing ring (7) slidably installed on the outside of the embedded part (4) and above the first sealing ring (6), an extension part (8) fixedly connected to the inner ring of the sealing ring (5), and a plurality of evenly arranged protrusions (9) extending from the edge of the second sealing ring (7), the protrusions (9) fitting against the extension part (8).

3. The pressure vessel top cover according to claim 2, characterized in that: The exhaust component includes a notch (10) opened on the outside of the embedded part (4), and two exhaust pipes (11) are fixedly installed on the top of the notch (10), and a sealing cap (12) is screwed to the top of the exhaust pipe (11).

4. A pressure vessel top cover according to claim 3, characterized in that: The exhaust component also includes a plurality of movable cavities (13) arranged circumferentially on the inner side of the cover (2). A screw (14) passes through the inner side of the movable cavity (13). A connecting plate (15) is installed on the screw (14) through a fixing part (141). The other end of the connecting plate (15) is fixedly connected to the second sealing ring (7).

5. A pressure vessel top cover according to claim 4, characterized in that: A guide rod (16) is fixedly installed on the top of the inner side of the active cavity (13), and a spring (17) for pressing the connecting plate (15) is fitted on the outer side of the guide rod (16).

6. A pressure vessel top cover according to claim 5, characterized in that: The bottom of the second sealing ring (7) is fixedly connected to a sealing part (18), and the top of the first sealing ring (6) is provided with a sealing groove (19).

7. A pressure vessel top cover according to claim 6, characterized in that: A guide block (20) is installed on the other side of the connecting plate (15), and the guide block (20) is slidably connected to the movable cavity (13).

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