Pressure relief structure of pressure vessel

Abstract

The utility model relates to the technical field of pressure vessels, and discloses a pressure relief structure of a pressure vessel, which comprises a tank body and a pressure relief valve, the pressure relief valve comprises a first valve body and a second valve body, the first valve body is vertically inserted at the top of the tank body in a penetrating manner, and the second valve body is fixedly and obliquely connected to the side wall of the first valve body. One end, far away from the first valve body, of the second valve body penetrates through the side wall of the tank body, and the bottom of the first valve body is located in the tank body. The communicating pipe is opened by screwing the first adjusting bolt to adjust the first sealing plug to move upwards in the first piston cylinder, and then the communicating pipe is opened by screwing the second adjusting bolt to enable the second sealing plug to move upwards in the second piston cylinder; therefore, the three pressure relief openings are sequentially opened, air pressure in the tank body can enter the second valve body through the communicating pipe and is discharged, the communicating position of the first piston barrel and the second piston barrel can be opened by continuously screwing the first adjusting bolt, and then pressure relief of the tank body can be rapidly completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure vessels, in particular to a pressure relief structure of a pressure vessel. Background Art

[0002] Pressure vessels are sealed containers that can withstand pressure and are widely used, especially in the fields of industry, civil engineering, and military engineering. However, when the internal pressure or temperature of these containers is too high, safety issues may arise.

[0003] The pressure relief devices on traditional pressure vessels are mostly fixed structures, which are not easy to disassemble and repair, and may cause safety hazards such as steam burns during the pressure relief process. Therefore, how to quickly and effectively release the excessive pressure inside the pressure vessel to the external environment to ensure the safe operation of the pressure vessel has become an important technical requirement. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the utility model provides the following technical solutions: a pressure relief structure of a pressure vessel, comprising a tank body and a pressure relief valve, the pressure relief valve comprising a first valve body and a second valve body, the first valve body being vertically and inserted through the top of the tank body, the second valve body being fixedly connected and obliquely connected to the side wall of the first valve body, the end of the second valve body away from the first valve body passing through the side wall of the tank body, the bottom of the first valve body being located inside the tank body, and a first piston cylinder being provided at the bottom of the first valve body, and a second piston cylinder being provided at the end of the second valve body connected to the first valve body and communicating with the first piston cylinder, a movable first sealing plug being movably provided inside the first piston cylinder, a movable second sealing plug being movably provided inside the second piston cylinder, and three pressure relief ports being sequentially provided at the bottom of the second valve body.

[0005] Preferably, an L-shaped connecting pipe is provided below the connection between the first valve body and the second valve body, one end of the horizontal portion of the connecting pipe is connected to the first piston cylinder in the first valve body, and one end of the vertical portion of the connecting pipe is connected to the second piston cylinder in the second valve body.

[0006] Preferably, a first screw hole connected to the first piston cylinder is formed at the top of the first valve body, and a first adjusting bolt is threadedly inserted in the first screw hole. The first adjusting bolt passes through one end of the first screw hole and extends into the first piston cylinder and is fixedly connected to the first sealing plug. The first sealing plug is located in the first piston cylinder at the connection between the second piston cylinder and the connecting pipe.

[0007] Preferably, a second screw hole connected to the second piston cylinder is formed at one end of the second valve body away from the first valve body, and a second adjusting bolt is inserted through the second screw hole. One end of the second adjusting bolt passes through the second screw hole and is fixedly connected to the second sealing plug. The second sealing plug is located at three pressure relief ports in the second piston cylinder.

[0008] Preferably, when the first sealing plug moves to the uppermost position of the first piston cylinder, the first sealing plug is located above the connection between the second piston cylinder and the first piston cylinder.

[0009] Preferably, when the second sealing plug moves to the innermost part of the second piston cylinder, the second sealing plug is located above the three pressure relief ports.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The first regulating bolt is turned to adjust the first sealing plug to move upward in the first piston cylinder, thereby opening the connecting pipe, and then the second regulating bolt is turned to move the second sealing plug upward in the second piston cylinder, thereby opening the three pressure relief ports in sequence, so that the air pressure in the tank body can enter the second valve body through the connecting pipe and be discharged, and continuing to turn the first regulating bolt can open the connection between the first piston cylinder and the second piston cylinder, thereby quickly completing the pressure relief of the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of a partial cross-sectional structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the connection between the first valve body and the second valve body of the utility model;

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection between the first valve body and the second valve body of the utility model;

[0017] In the figure: 1, tank body; 2, first valve body; 3, second valve body; 4, first piston cylinder; 5, first sealing plug; 6, first screw hole; 7, first adjusting bolt; 8, second piston cylinder; 9, second sealing plug; 10, second screw hole; 11, second adjusting bolt; 12, pressure relief port; 13, connecting pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] Depend on Figure 1-4 It is given that the utility model includes a tank body 1 and a pressure relief valve, the pressure relief valve includes a first valve body 2 and a second valve body 3, the first valve body 2 is vertically and inserted through the top of the tank body 1, the second valve body 3 is fixedly connected and obliquely connected to the side wall of the first valve body 2, the end of the second valve body 3 away from the first valve body 2 passes through the side wall of the tank body 1, the bottom of the first valve body 2 is located inside the tank body 1, and a first piston cylinder 4 is opened at the bottom of the first valve body 2, and a second piston cylinder 8 connected to the first piston cylinder 4 is opened at the end of the second valve body 3 connected to the first valve body 2, a movable first sealing plug 5 is movably provided inside the first piston cylinder 4, and a movable second sealing plug 9 is movably provided inside the second piston cylinder 8, and three pressure relief ports 12 are opened in sequence at the bottom of the second valve body 3.

[0020] At the same time, an L-shaped connecting pipe 13 is arranged below the connection between the first valve body 2 and the second valve body 3, one end of the horizontal portion of the connecting pipe 13 is connected to the first piston cylinder 4 in the first valve body 2, and one end of the vertical portion of the connecting pipe 13 is connected to the second piston cylinder 8 in the second valve body 3.

[0021] In addition, a first screw hole 6 connected to the first piston cylinder 4 is formed at the top of the first valve body 2, and a first adjusting bolt 7 is threadedly inserted in the first screw hole 6. The first adjusting bolt 7 passes through one end of the first screw hole 6 and extends into the first piston cylinder 4 and is fixedly connected to the first sealing plug 5. The first sealing plug 5 is located in the first piston cylinder 4 at the connection between the second piston cylinder 8 and the connecting pipe 13.

[0022] In addition, a second screw hole 10 connected to the second piston cylinder 8 is formed at one end of the second valve body 3 away from the first valve body 2, and a second adjusting bolt 11 is inserted through the inside of the second screw hole 10. One end of the second adjusting bolt 11 passes through the second screw hole 10 and is fixedly connected to the second sealing plug 9. The second sealing plug 9 is located at three pressure relief ports 12 in the second piston cylinder 8, so that the first sealing plug 5 can block the connection between the second piston cylinder 8 and the first piston cylinder 4 and the connection between the connecting pipe 13 and the first piston cylinder 4.

[0023] In addition, when the first sealing plug 5 moves to the uppermost part of the first piston cylinder 4, the first sealing plug 5 is located above the connection between the second piston cylinder 8 and the first piston cylinder 4, thereby opening the connection between the second piston cylinder 8 and the first piston cylinder 4, so that the air pressure inside the tank body 1 can be quickly discharged from the three pressure relief ports 12 through the second piston cylinder 8.

[0024] It should also be noted that when the second sealing plug 9 moves to the innermost part of the second piston cylinder 8, the second sealing plug 9 is located above the three pressure relief ports 12, and the second sealing plug 9 can block the connection between the three pressure relief ports 12 and the second piston cylinder 8, and the three pressure relief ports 12 can be opened in sequence by the movement of the second sealing plug 9.

[0025] Working principle: When relieving pressure, first turn the first adjusting bolt 7 to drive the first sealing plug 5 to move upward in the first piston cylinder 4, thereby opening the connection between the connecting pipe 13 and the first piston cylinder 4, and then turn the second adjusting bolt 11 to move the second sealing plug 9 upward in the second piston cylinder 8, thereby opening the pressure relief port 12 (opening the three pressure relief ports 12 in sequence can change the pressure relief rate of the tank body 1), so that the air pressure in the tank body 1 can enter the first piston cylinder 8 in the second valve body 3 through the connecting pipe 13 and be discharged from the three pressure relief ports 12, and continue to turn the first adjusting bolt 7 to open the connection between the first piston cylinder 4 and the second piston cylinder 8, thereby quickly completing the pressure relief of the tank body 1.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure relief structure for a pressure vessel, comprising a tank body (1) and a pressure relief valve, characterized in that: The pressure relief valve comprises a first valve body (2) and a second valve body (3); the first valve body (2) is vertically and inserted through the top of the tank body (1); the second valve body (3) is fixedly connected and obliquely connected to the side wall of the first valve body (2); the end of the second valve body (3) away from the first valve body (2) passes through the side wall of the tank body (1); the bottom of the first valve body (2) is located inside the tank body (1); a first piston cylinder (4) is provided at the bottom of the first valve body (2); a second piston cylinder (8) connected to the first piston cylinder (4) is provided at the end of the second valve body (3) connected to the first valve body (2); a movable first sealing plug (5) is movably provided inside the first piston cylinder (4); a movable second sealing plug (9) is movably provided inside the second piston cylinder (8); and three pressure relief ports (12) are sequentially provided at the bottom of the second valve body (3).

2. A pressure relief structure for a pressure vessel according to claim 1, characterized in that: An L-shaped connecting pipe (13) is provided below the connection between the first valve body (2) and the second valve body (3); one end of the horizontal portion of the connecting pipe (13) is connected to the first piston cylinder (4) in the first valve body (2); and one end of the vertical portion of the connecting pipe (13) is connected to the second piston cylinder (8) in the second valve body (3).

3. A pressure relief structure for a pressure vessel according to claim 2, characterized in that: A first screw hole (6) connected to the first piston cylinder (4) is formed at the top end of the first valve body (2). A first adjusting bolt (7) is threadedly inserted into the first screw hole (6). The first adjusting bolt (7) passes through one end of the first screw hole (6) and extends into the first piston cylinder (4) and is fixedly connected to the first sealing plug (5). The first sealing plug (5) is located at the connection between the second piston cylinder (8) and the connecting pipe (13) in the first piston cylinder (4).

4. A pressure relief structure for a pressure vessel according to claim 1, characterized in that: A second screw hole (10) connected to the second piston cylinder (8) is formed at one end of the second valve body (3) away from the first valve body (2); a second adjusting bolt (11) is inserted through the inside of the second screw hole (10); one end of the second adjusting bolt (11) passes through the second screw hole (10) and is fixedly connected to the second sealing plug (9); the second sealing plug (9) is located at three pressure relief ports (12) in the second piston cylinder (8).

5. The pressure relief structure of a pressure vessel according to claim 1, characterized in that: When the first sealing plug (5) moves to the uppermost position of the first piston cylinder (4), the first sealing plug (5) is located above the connection between the second piston cylinder (8) and the first piston cylinder (4).

6. The pressure relief structure of a pressure vessel according to claim 1, characterized in that: When the second sealing plug (9) moves to the innermost part of the second piston cylinder (8), the second sealing plug (9) is located above the three pressure relief ports (12).

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