Pressure relief device for high pressure storage tank

By designing a pressure relief device for high-pressure storage tank, the combination of a pressure relief cylinder and a pressure relief internal valve, combined with a mechanical lifting and braking mechanism, the problem of poor pressure relief stability of the existing high-pressure pressure relief valve is solved, and stable and flexible pressure relief control is achieved.

CN222732213UActive Publication Date: 2025-04-08FUHUA TONGDA CHEM CO LTD
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Patent Information

Application Number
CN202421539585.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-02
Publication Date
2025-04-08
Estimated Expiration
2034-07-02

AI Technical Summary

Technical Problem

The existing high-pressure pressure relief valves have poor pressure relief stability and high dynamic volatility. They need to continuously charge and recharge pressure to maintain the rated value of high-pressure gas control pressure relief.

Method used

A pressure relief device for high-pressure storage tank is designed, including a pressure relief valve and a brake seat installed on the upper end of the pressure relief valve body. A pressure relief cylinder and a pressure relief internal valve are installed inside the pressure relief valve. The brake seat is equipped with a pressure relief brake mechanism, and the lifting displacement of the pressure relief valve core is controlled by mechanical lifting and braking, and the pressure relief discharge hole is opened in turn for pressure relief.

Benefits of technology

It achieves good mechanical pressure relief stability and pressure relief regulation performance. It opens and closes mechanically when pressure relief is released, and mechanically seals after pressure relief. It can flexibly adjust the pressure relief value, adapt to different pressure relief environments, and improves pressure relief stability.

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Abstract

The utility model relates to the technical field of pressure valves, and in particular to a pressure relief device for a high-pressure storage tank, wherein a pressure relief cylinder is installed inside the valve body of the pressure relief valve, and a plurality of groups of pressure relief holes are arranged from top to bottom on the cylinder body of the pressure relief cylinder, and a pressure relief inner valve is installed at the bottom of the cylinder mouth of the pressure relief cylinder, and a pressure relief brake mechanism is provided on the support of the brake seat. The utility model is based on the mechanical lifting and braking of the pressure relief brake mechanism, and controls the lifting and displacement of the pressure relief valve core along the direction of the pressure relief cylinder, and exposes the pressure relief holes on the pressure relief cylinder in sequence, which are used as high-pressure exhaust ports for pressure relief and discharge. On the one hand, it has good mechanical pressure relief stability performance, and mechanically opens and closes the pressure relief during pressure relief, and mechanically closes and seals after the pressure relief is completed. On the other hand, it has good pressure relief regulation performance, and its pressure relief value can be flexibly adjusted by opening the pressure relief holes on the pressure relief cylinder, so as to be more flexibly adapted to the on-site pressure relief environment.
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Description

Technical Field

[0001] The utility model relates to the technical field of pressure valves, in particular to a pressure relief device for a high-pressure storage tank. Background Art

[0002] As a kind of pressure valve, the pressure relief valve can open and close to relieve pressure according to the working pressure of the system. It is generally installed on the equipment or pipeline of the closed system to protect the safety of the system. It is widely used in the pressure relief work of various high-pressure storage equipment, such as various high-pressure storage tanks, high-pressure circulation pipelines and other system equipment. It plays a role in safety pressure relief protection. It is an indispensable safety valve in various high-pressure system equipment. As described in a new type of ultra-high pressure relief valve disclosed by the China Patent Network (public announcement number CN216078466U), when the pressure relief valve of this type of device is in use, the pressure pumping of the air pressure pump in the electric control box is used to pressurize the upper part of the internal gas partition of the pressure relief valve body as a compression medium, and the air pressure is used to control the pressure relief pressure value. By adjusting the pressure relief pressure value, it can be adjusted according to needs, which is conducive to the flexibility of use of the device and increases the adaptability of the device.

[0003] However, the above-mentioned patents and the high-pressure relief valves adopted in the existing market still have some shortcomings: the existing method of using high-pressure gas pumping as a compression medium to control the pressure relief value has a large variable air pressure control, and requires uninterrupted pressure filling and pressure replenishment to maintain the rated value of the high-pressure gas control pressure relief. The dynamic fluctuation is large and the pressure relief stability is poor. To this end, those skilled in the art have provided a pressure relief device for a high-pressure storage tank to solve the problems raised in the above-mentioned background technology. Utility Model Content

[0004] The main purpose of the utility model is to provide a pressure relief device for a high-pressure storage tank, which can effectively solve the problem of poor pressure relief stability of the existing high-pressure pressure relief devices in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a pressure relief device for a high-pressure storage tank includes a pressure relief valve and a brake seat installed on the upper end of the valve body of the pressure relief valve;

[0006] A pressure relief cylinder is installed inside the valve body of the pressure relief valve, and a plurality of pressure relief holes are arranged on the cylinder body of the pressure relief cylinder from top to bottom, and a pressure relief inner valve is installed at the bottom cylinder opening of the pressure relief cylinder;

[0007] The support of the brake seat is provided with a pressure relief brake mechanism;

[0008] The pressure relief brake mechanism includes a guide sleeve installed on the top of the brake seat chamber and a support seat fixed by a ring sleeve on the outside of the brake seat support. A brake guide rod is slidably connected inside the shaft sleeve of the guide sleeve, and a top support arm connected to the brake seat is clamped on the top of the arm of the brake guide rod. An electric push rod of the top support arm is connected to one side of the support seat, and a pressure relief valve core is provided at the bottom end of the arm of the brake guide rod, which passes through the pressure relief cylinder and is opposite to the pressure relief inner valve.

[0009] As a further solution of the utility model: a pressure relief flange opening perpendicular to the direction of the pressure relief cylinder is arranged on one side of the valve body of the pressure relief valve, and a pressure discharge flange opening horizontal to the direction of the pressure relief cylinder is arranged on the bottom of the valve body of the pressure relief valve.

[0010] As a further solution of the utility model: the brake guide rod comprises a telescopic guide rod and a brake push ring installed on the top end of the telescopic guide rod arm;

[0011] The top support arm comprises a top support rod and a plurality of groups of top support flanges arranged on the upper ends of the top support rod arms, and the top support flanges are in contact with the brake push ring.

[0012] As a further solution of the utility model: the outer side of the arm rod of the brake guide rod is sleeved with a compression spring which is pressed against the guide sleeve.

[0013] As a further solution of the utility model: two groups of pressure relief holes adjacent to each other are arranged at equal intervals relative to the body of the pressure relief cylinder.

[0014] As a further solution of the utility model: the valve body outer diameter of the pressure relief valve core is matched with the inner diameter of the chamber of the pressure relief cylinder, and the pressure relief valve core and the pressure relief inner valve are pressed against each other and overlapped.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] When the high-pressure pressure relief device of the utility model is installed and used, based on the mechanical lifting and braking of the pressure relief brake mechanism, the pressure relief valve core is controlled to lift and displace along the direction of the pressure relief cylinder, so that the pressure relief discharge holes on the pressure relief cylinder are exposed in sequence to serve as a high-pressure exhaust port for pressure relief and discharge. On the one hand, it has good mechanical pressure relief stability performance. During pressure relief, the pressure is mechanically opened and closed, and after the pressure relief is completed, the pressure is mechanically closed and sealed. On the other hand, it has good pressure relief regulation performance. By opening and conducting the pressure relief discharge holes on the pressure relief cylinder, the pressure relief value can be flexibly adjusted, so that it can be more flexibly adapted to the on-site pressure relief environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the pressure relief device for the high-pressure storage tank of the utility model;

[0018] Figure 2It is a first partial cross-sectional view of the pressure relief device for a high-pressure storage tank of the utility model;

[0019] Figure 3 This is a second partial cross-sectional view of the pressure relief device for a high-pressure storage tank of the utility model.

[0020] In the figure: 1. pressure relief valve; 2. brake seat; 3. pressure relief flange; 4. pressure discharge flange; 5. support seat; 6. electric push rod; 7. top support arm; 71. top support rod; 72. top support flange; 8. brake guide rod; 81. telescopic guide rod; 82. brake push ring; 9. guide sleeve; 10. compression spring; 11. pressure relief cylinder; 12. pressure relief discharge hole; 13. pressure relief internal valve; 14. pressure relief valve core. DETAILED DESCRIPTION

[0021] 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.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Please refer to Figure 1-3As shown, the pressure relief device for the high-pressure storage tank comprises a pressure relief valve 1 and a brake seat 2 installed on the upper end of the valve body of the pressure relief valve 1, a pressure relief cylinder 11 is installed inside the valve body of the pressure relief valve 1, a pressure relief flange port 3 perpendicular to the direction of the pressure relief cylinder 11 is arranged on one side of the valve body of the pressure relief valve 1, and a pressure discharge flange port 4 horizontal to the direction of the pressure relief cylinder 11 is arranged on the bottom of the valve body of the pressure relief valve 1, the pressure relief flange port 3 is connected to the pressure relief valve port of the high-pressure storage tank, the overall structure of the pressure relief device is installed on the high-pressure storage tank, and the pressure relief flange port 4 is used to conduct and discharge the depressurized high-pressure medium.

[0025] The support of the brake seat 2 is provided with a pressure relief brake mechanism, which includes a guide sleeve 9 installed at the top of the chamber of the brake seat 2 and a support seat 5 fixed to the outside of the support of the brake seat 2 by a ring sleeve. A brake guide rod 8 is slidably connected inside the shaft sleeve of the guide sleeve 9, and the top of the arm of the brake guide rod 8 is clamped with a top support arm 7 connected to the brake seat 2. One side of the support of the support seat 5 is connected to an electric push rod 6 for supporting the top support arm 7. The brake guide rod 8 includes a telescopic guide rod 81 and an installation The brake push ring 82 at the top end of the telescopic guide rod 81 arm, the top support arm 7 includes a top support rod 71 and a plurality of top support flanges 72 arranged at the upper end of the arm of the top support rod 71, and the top support flange 72 and the brake push ring 82 abut against each other. When the top support arm 7 rotates and swings, the top support flange 72 at the upper end of the arm is used to support the brake push ring 82 at the top end of the arm of the brake guide rod 8, thereby pushing the brake guide rod 8 to slide upward, thereby opening the valve of the pressure relief device and performing the pressure relief work.

[0026] The bottom end of the arm of the brake guide rod 8 is provided with a pressure relief valve core 14 that passes through the pressure relief cylinder 11 and is opposite to the pressure relief internal valve 13. The outer side of the arm of the brake guide rod 8 is sleeved with a compression spring 10 that is pressed against the guide sleeve 9. By arranging the compression spring 10 in a ring on the brake guide rod 8, it can be used as an elastic reset component. When the combination of the brake guide rod 8 and the pressure relief valve core 14 moves downward to reset, the pressure relief valve core 14 is pushed to assist in resetting, thereby improving the rapidity of the telescopic reset of the pressure relief valve core 14 and the pressure relief internal valve 13.

[0027] The body of the pressure relief cylinder 11 is provided with a plurality of groups of pressure relief holes 12 arranged from top to bottom, and a pressure relief inner valve 13 is installed at the bottom of the pressure relief cylinder 11. The two groups of pressure relief holes 12 adjacent to each other are arranged at equal intervals relative to the body of the pressure relief cylinder 11. The outer diameter of the valve body of the pressure relief valve core 14 is matched with the inner diameter of the chamber of the pressure relief cylinder 11, and the pressure relief valve core 14 and the pressure relief inner valve 13 are pressed against and overlapped with each other. When the brake guide rod 8 pulls the pressure relief valve core 14 to slide upward in the direction of the pressure relief cylinder 11, the pressure relief holes 12 on the pressure relief cylinder 11 are connected and exposed in turn, and are connected with the pressure relief inner valve 13 in turn, so as to adjust the pressure value. It has better on-site flexibility and adaptability, and can perform pressure relief work with different pressure values.

[0028] The working principle of the utility model is as follows: when the pressure relief device is used as a pressure relief valve of a high-pressure storage tank, the pressure relief flange port 3 is first connected to the pressure relief valve port of the high-pressure storage tank, the overall structure of the pressure relief device is installed on the high-pressure storage tank, and the pressure relief flange port 4 is connected to the pressure relief pipeline to discharge the high-pressure medium;

[0029] Subsequently, when the high-pressure storage tank is depressurized, the telescopic end of the electric push rod 6 is controlled to extend, and the top support arm 7 is pushed to rotate and swing upward. The top support swing of the top support arm 7 is synchronously used to push the brake guide rod 8 to slide upward along the guide sleeve 9, and then the pressure relief valve core 14 is pushed to move up and brake, so that the pressure relief discharge holes 12 on the pressure relief cylinder 11 are connected and exposed in turn, and the pressure relief internal valve 13 is formed in turn to form a conductive state, and the high-pressure medium in the high-pressure storage tank is discharged through the pipeline combination of the pressure relief flange port 3, the pressure relief discharge holes 12, the pressure relief internal valve 13, and the pressure discharge flange port 4, and the pressure is relieved and conducted. By controlling the number of the pressure relief discharge holes 12 on the pressure relief cylinder 11 that are connected, the pressure relief value can be dynamically adjusted to better match the on-site pressure relief environment. While having stable mechanical pressure relief performance, it also has good pressure relief regulation performance.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pressure relief device for a high-pressure storage tank, characterized in that: It comprises a pressure relief valve (1) and a brake seat (2) installed on the upper end of the valve body of the pressure relief valve (1); A pressure relief cylinder (11) is installed inside the valve body of the pressure relief valve (1), and a plurality of groups of pressure relief holes (12) are arranged from top to bottom on the cylinder body of the pressure relief cylinder (11), and a pressure relief inner valve (13) is installed at the bottom cylinder opening of the pressure relief cylinder (11); The support of the brake seat (2) is provided with a pressure relief brake mechanism; The pressure relief brake mechanism comprises a guide sleeve (9) mounted on the top of the chamber of the brake seat (2) and a support seat (5) fixed on the outside of the support seat of the brake seat (2) by a ring sleeve, a brake guide rod (8) is slidably connected inside the shaft sleeve of the guide sleeve (9), and a top support arm (7) connected to the brake seat (2) is clamped on the top of the arm of the brake guide rod (8), an electric push rod (6) of the top support arm (7) is connected to one side of the support seat (5), and a pressure relief valve core (14) is provided at the bottom end of the arm of the brake guide rod (8) which passes through the pressure relief cylinder (11) and is opposite to the pressure relief internal valve (13).

2. The pressure relief device for a high-pressure storage tank according to claim 1, characterized in that: A pressure relief flange opening (3) perpendicular to the direction of the pressure relief cylinder (11) is arranged on one side of the valve body of the pressure relief valve (1), and a pressure relief flange opening (4) horizontal to the direction of the pressure relief cylinder (11) is arranged on the bottom of the valve body of the pressure relief valve (1).

3. The pressure relief device for a high-pressure storage tank according to claim 1, characterized in that: The brake guide rod (8) comprises a telescopic guide rod (81) and a brake push ring (82) mounted on the top end of the arm of the telescopic guide rod (81); The supporting arm (7) comprises a supporting rod (71) and a plurality of supporting flanges (72) arranged on the upper end of the arm of the supporting rod (71), and the supporting flanges (72) and the brake push ring (82) are in contact with each other.

4. The pressure relief device for a high-pressure storage tank according to claim 1, characterized in that: The outer side of the arm of the brake guide rod (8) is sleeved with a compression spring (10) which is pressed against the guide sleeve (9).

5. The pressure relief device for a high-pressure storage tank according to claim 1, characterized in that: The two groups of pressure relief holes (12) adjacent to each other are arranged at equal intervals relative to the body of the pressure relief cylinder (11).

6. The pressure relief device for a high-pressure storage tank according to claim 1, characterized in that: The valve body outer diameter of the pressure relief valve core (14) is matched with the inner diameter of the chamber of the pressure relief cylinder (11), and the pressure relief valve core (14) and the pressure relief inner valve (13) are pressed against each other and overlap.