Liquid carbon dioxide storage tank pressure relief device

Abstract

The utility model discloses a pressure relief device for a liquid carbon dioxide storage tank, which relates to the technical field of carbon dioxide storage and comprises a base plate, a vertical supporting plate is fixedly arranged on one side of the upper surface of the base plate, a power box is fixedly arranged at one end, far away from the base plate, of the vertical supporting plate, and an internal communicating pipe is fixedly arranged at the top of the inner wall of the power box. The outer wall of the internal communicating pipe is slidably sleeved with an external protective pipe, one side of the top of the external protective pipe is communicated with a pressure relief connecting pipe, and a blocking plate is fixedly arranged at the end, away from the external protective pipe, of the pressure relief connecting pipe. According to the pressure relief device for the liquid carbon dioxide storage tank, the blocking plate moves up and down under the action of the external protective pipe, the pressure relief connecting pipe is communicated with the pipeline, and the effects that the pipeline is communicated with the storage tank when pressure relief treatment is needed, the pipeline is prevented from being always communicated with the pressure relief pipeline, and the sealing performance of pressure relief equipment is improved are achieved; the problems that during pressure relief treatment of a traditional storage tank, leakage is prone to occurring, and the safety effect is reduced due to poor sealing performance are solved.

Description

Technical Field

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

[0002] A pressure vessel is a pressure storage device, which is widely used in the chemical industry, and a pressure control device is usually installed on the pressure vessel. The pressure control device is also called a pressure relief device. The pressure relief device can be adjusted according to the stored items in the pressure vessel, and can prevent the internal pressure of the pressure vessel from being too high, causing the pressure vessel to rupture or even explode.

[0003] Currently, the traditional pressure relief device for a liquid carbon dioxide storage tank cannot be accurately controlled during use, resulting in internal pressure leakage, making subsequent operations inconvenient, and at the same time, the safety of operators is not guaranteed. The traditional pressure relief device is inconvenient to control, increasing the operation difficulty of the pressure relief work. After the pressure relief is completed, it cannot be reset in time, resulting in excessive leakage of internal carbon dioxide. Summary of the Utility Model

[0004] In view of the problems that the traditional pressure relief device for a liquid carbon dioxide storage tank cannot be accurately controlled during use, resulting in internal pressure leakage, making subsequent operations inconvenient, and at the same time, the safety of operators is not guaranteed. The traditional pressure relief device is inconvenient to control, increasing the operation difficulty of the pressure relief work. After the pressure relief is completed, it cannot be reset in time, resulting in excessive leakage of internal carbon dioxide, the present utility model is proposed.

[0005] To solve the above technical problems, the present utility model provides the following technical solution: A pressure relief device for a liquid carbon dioxide storage tank, which includes a base plate. One side of the upper surface of the base plate is fixedly provided with a support vertical plate. One end of the support vertical plate away from the base plate is fixedly provided with a power box. The top of the inner wall of the power box is fixedly provided with an internal communication pipe. The outer wall of the internal communication pipe is slidably sleeved with an external protection pipe. One side of the top of the external protection pipe is communicated with a pressure relief connection pipe. One end of the pressure relief connection pipe away from the external protection pipe is fixedly provided with a plug plate. One side of the plug plate away from the pressure relief connection pipe is slidably arranged on one side of the inner wall of the power box.

[0006] One end of the plug plate away from the pressure relief connection pipe is fixedly provided with a lower pressing plate. One side of the lower pressing plate away from the pressure relief connection pipe is fixedly provided with a moving support plate through an arc-shaped connecting plate. Both ends of the bottom of the moving support plate are fixedly provided with sliding rods. One end of the sliding rod away from the moving support plate passes through the bottom of the power box and is fixedly provided with a vertical sliding rod. One end of the vertical sliding rod away from the sliding rod is fixedly provided with a pedal. One side of the pedal away from the vertical sliding rod is fixedly arranged in the middle of the upper surface of an elastic bottom plate. Both ends of the bottom of the elastic bottom plate are slidably connected with the inner wall of a slide rail on one side of the upper surface of the base plate.

[0007] Preferably, pressure relief openings are provided on both sides of the power box. A connecting pipe is connected to the pressure relief opening on the left side of the power box. An internally threaded pipe is slidably inserted into one end of the connecting pipe away from the power box. A limiting plate is provided at the top of the end of the connecting pipe located inside the internally threaded pipe. The limiting plate is of an annular structure. The outer diameter of the limiting plate is larger than the inner diameter of the right end of the internally threaded pipe, and the inner diameter of the limiting plate is equal to the inner diameter of the connecting pipe. The limiting plate is always located inside the internally threaded pipe. Sliding grooves are fixedly provided on both sides of the inner wall of the power box, and the inner wall width of the sliding grooves is the same as the width of the plug plate.

[0008] Preferably, the middle part of the lower pressing plate is slidably sleeved on the outer circumferential surface of the bottom of the internal connecting pipe. Both ends of the bottom of the lower pressing plate are provided with telescopic rods. A spring is sleeved on the outer circumferential surface of the telescopic rods, and the bottom of the spring is fixedly provided on the bottom of the inner wall of the power box.

[0009] Preferably, a trapezoidal slider is fixedly provided in the middle of one side of the pedal, and a trapezoidal sliding groove is fixedly provided in the middle of one side of the supporting vertical plate. One end of the trapezoidal slider away from the pedal is slidably connected to the trapezoidal sliding groove in the middle of one side of the supporting vertical plate.

[0010] Preferably, pressure relief openings are provided on both sides of the middle part of the internal connecting pipe. The pressure relief openings on both sides of the internal connecting pipe are coaxially arranged with the pressure relief openings on both sides of the power box. The diameters of the pressure relief openings on both sides of the internal connecting pipe are the same as the inner wall diameters of the pressure relief connecting pipes. The bottom of the internal connecting pipe is hermetically provided. The bottom of the internal connecting pipe is fixedly provided on the bottom of the inner wall of the power box through a support rod. A drain opening communicating with the pressure relief connecting pipe is provided on the top of the plug plate.

[0011] Preferably, the outer circumferential surface of the bottom of the outer protective pipe is fixedly connected to the middle part of the lower pressing plate. The length of the outer protective pipe is twice that of the internal connecting pipe, and the inner wall of the outer protective pipe is in close contact with the outer wall of the internal connecting pipe.

[0012] Advantages of the utility model:

[0013] 1. By setting the plug plate to move up and down under the action of the outer protective pipe, the pressure relief connecting pipe is connected to the pipeline, so that when pressure relief treatment is required, the pipeline is connected to the storage tank, avoiding the pipeline being always connected to the pressure relief pipeline, and increasing the sealing performance of the pressure relief device. This solves the problem that traditional storage tank pressure relief treatment is prone to leakage and poor sealing performance, resulting in reduced safety.

[0014] 2. By setting the connecting pipe to rotate inside the internally threaded pipe, the device can be in a stationary state while being connected, avoiding damage caused by following rotation, facilitating installation, avoiding damage to the device body during installation, and enabling the device to be reset in time after use, facilitating subsequent use and improving the utilization rate of the device. Description of the drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0016] Figure 1 is a schematic diagram of the internal structure of the present utility model;

[0017] Figure 2 is a schematic diagram of a partial structure of the present utility model;

[0018] Figure 3 is a left view schematic diagram of the present utility model;

[0019] Figure 4 is a schematic diagram of the overall structure of the present utility model.

[0020] Explanation of reference numerals:

[0021] 1, base plate; 2, elastic bottom plate; 3, pedal; 4, vertical sliding rod; 5, supporting vertical plate; 6, sliding rod; 7, telescopic rod; 8, lower pressing plate; 9, external protection tube; 10, pressure relief connecting pipe; 11, internal communication pipe; 12, plug plate; 13, internal threaded pipe; 14, communication pipe; 15, power box; 16, moving support plate. Specific embodiments

[0022] To make the above objects, features and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings of the specification.

[0023] Refer to Figures 1-4, which is an embodiment of the present utility model, provides a pressure relief device for a liquid carbon dioxide storage tank. This pressure relief device for a liquid carbon dioxide storage tank includes a base plate 1. On one side of the upper surface of the base plate 1, a support vertical plate 5 is fixedly arranged. At the end of the support vertical plate 5 far from the base plate 1, a power box 15 is fixedly arranged. Pressure relief openings are arranged on both sides of the power box 15. A connecting pipe 14 is communicated with the pressure relief opening on the left side of the power box 15. At one end of the connecting pipe 14 far from the power box 15, an internally threaded pipe 13 is slidably inserted. At the top of the end of the connecting pipe 14 located inside the internally threaded pipe 13, a limiting plate is arranged. The limiting plate is of an annular structure. The outer diameter of the limiting plate is larger than the inner diameter of the right end of the internally threaded pipe 13, and the inner diameter of the limiting plate is equal to the inner diameter of the connecting pipe 14. The limiting plate is always located inside the internally threaded pipe 13. On both sides of the inner wall of the power box 15, sliding grooves are fixedly arranged. The inner wall width of the sliding grooves is the same as the width of the plug plate 12. Connecting the pressure relief openings on both sides of the power box 15 with the connecting pipe 14 facilitates discharging the pressure at one end of the internally threaded pipe 13 through the power box 15 via the connecting pipe 14. One end of the connecting pipe 14 is rotatably connected to the internally threaded pipe 13, which facilitates connecting the internally threaded pipe 13 with an external storage tank and ensures that when rotating, the connecting pipe 14 and the rest of the devices at the right end are in a static state. At the top of the inner wall of the power box 15, an internal connecting pipe 11 is fixedly arranged. Pressure relief openings are arranged on both sides of the middle of the internal connecting pipe 11. The pressure relief openings on both sides of the internal connecting pipe 11 are coaxially arranged with the pressure relief openings on both sides of the power box 15. The diameters of the pressure relief openings on both sides of the internal connecting pipe 11 are the same as the inner wall diameter of the pressure relief connecting pipe 10. The bottom of the internal connecting pipe 11 is hermetically arranged to prevent the pressure entering the internal connecting pipe 11 from leaking, increasing the sealing performance. The bottom of the internal connecting pipe 11 is fixedly arranged on the bottom of the inner wall of the power box 15 through a support rod. At the top of the plug plate 12, a discharge port communicated with the pressure relief connecting pipe 10 is arranged. The pressure relief openings on both sides of the internal connecting pipe 11 facilitate connecting with the pressure relief openings on both sides of the external protection pipe 9. The outer wall of the internal connecting pipe 11 is slidably sleeved with an external protection pipe 9. The outer circumferential surface at the bottom of the external protection pipe 9 is fixedly connected to the middle of the lower pressing plate 8 to ensure that the external protection pipe 9 and the lower pressing plate 8 move simultaneously. The length of the external protection pipe 9 is twice that of the internal connecting pipe 11 to avoid movement conflicts between the external protection pipe 9 and the internal connecting pipe 11 during movement. The inner wall of the external protection pipe 9 is in close contact with the outer wall of the internal connecting pipe 11 to prevent pressure gas from leaking through the external protection pipe 9 during the movement process, increasing its sealing performance. On one side at the top of the external protection pipe 9, a pressure relief connecting pipe 10 is communicated. At one end of the pressure relief connecting pipe 10 far from the external protection pipe 9, a plug plate 12 is fixedly arranged. On the side of the plug plate 12 far from the pressure relief connecting pipe 10, it is slidably arranged on one side of the inner wall of the power box 15.

[0024] One end of the plugging plate 12 away from the pressure relief connecting pipe 10 is fixedly provided with a lower pressing plate 8. The middle part of the lower pressing plate 8 is slidably sleeved on the outer circumferential surface of the bottom of the internal connecting pipe 11. Both ends of the bottom of the lower pressing plate 8 are provided with telescopic rods 7. A spring is sleeved on the outer circumferential surface of the telescopic rod 7. The bottom of the spring is fixedly provided on the bottom of the inner wall of the power box 15. The telescopic rod 7 is arranged below the lower pressing plate 8 to ensure the smooth movement of the lower pressing plate 8 when it is stressed and lifted or lowered. At the same time, through the spring outside the telescopic rod 7, it is ensured that the lower pressing plate 8 can be reset in time after movement. One side of the lower pressing plate 8 away from the pressure relief connecting pipe 10 is fixedly provided with a moving support plate 16 through an arc-shaped connecting plate. Both ends of the bottom of the moving support plate 16 are fixedly provided with sliding rods 6. One end of the sliding rod 6 away from the moving support plate 16 passes through the bottom of the power box 15 and is fixedly provided with a vertical sliding rod 4. One end of the vertical sliding rod 4 away from the sliding rod 6 is fixedly provided with a pedal 3. The middle part of one side of the pedal 3 is fixedly provided with a trapezoidal slider. The middle part of one side of the supporting vertical plate 5 is fixedly provided with a trapezoidal chute. One end of the trapezoidal slider away from the pedal 3 is slidably connected with the trapezoidal chute in the middle of one side of the supporting vertical plate 5. The trapezoidal slider on one side of the pedal 3 ensures that it can move straight and prevents tilting during movement. One side of the pedal 3 away from the vertical sliding rod 4 is fixedly provided in the middle of the upper surface of the elastic bottom plate 2. Both ends of the bottom of the elastic bottom plate 2 are slidably connected with the inner walls of the sliding rails on one side of the upper surface of the base plate 1.

[0025] During the use process, when it is necessary to carry out pressure relief treatment on the inside of the storage tank, rotate the internal thread pipe 13 to communicate with the storage tank. Since the connecting pipe 14 and the internal thread pipe 13 are in a rotationally connected state, when the internal thread pipe 13 is rotated, the connecting pipe 14 remains stationary. When the internal thread pipe 13 rotates and moves a certain distance, the connecting pipe 14 is in close contact with one end of the storage tank, increasing its sealing performance while the connection is completed. After the connection is completed, an external force is applied to the pedal 3 to drive the pressing plate to drive the vertical sliding rod 4 to move downward. The vertical sliding rod 4 drives the outer protection pipe 9 on the top of the moving support plate 16 to move downward through the sliding rod 6. The outer protection pipe 9 drives the two pressure relief connecting pipes 10 and the plugging plate 12 on both sides to move downward. When the drain port on the top of the plugging plate 12 is at the same horizontal position as the connecting pipe 14, the pressure inside the storage tank is discharged outward through the connecting pipe 14. When the pressure relief is completed, the force applied to the pedal 3 is released, and the pedal 3 resets. At the same time, the plugging plate 12 moves away from the connecting pipe 14, and the plugging plate 12 seals the connecting pipe 14 through the bottom sealing state, ensuring the safety of the device after the pressure relief is completed.

[0026] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A liquid carbon dioxide storage tank pressure relief device, comprising a base plate (1), characterized in that: A support vertical plate (5) is fixedly provided on one side of the upper surface of the base plate (1); a power box (15) is fixedly provided on one end of the support vertical plate (5) away from the base plate (1); an internal connecting pipe (11) is fixedly provided on the top of the inner wall of the power box (15); an external protective pipe (9) is slidably sleeved on the outer wall of the internal connecting pipe (11); a pressure relief connecting pipe (10) is connected to one side of the top of the external protective pipe (9); a blocking plate (12) is fixedly provided on one end of the pressure relief connecting pipe (10) away from the external protective pipe (9); a side of the blocking plate (12) away from the pressure relief connecting pipe (10) is slidably provided on one side of the inner wall of the power box (15); the blocking plate (12) away from the pressure relief connecting pipe (10) is slidably provided on one side of the inner wall of the power box (15); A lower pressure plate (8) is fixedly provided at one end of the elastic bottom plate (10), a moving support plate (16) is fixedly provided on the side of the lower pressure plate (8) away from the pressure relief connecting pipe (10) through an arc-shaped connecting plate, sliding rods (6) are fixedly provided at both ends of the bottom of the moving support plate (16), an end of the sliding rod (6) away from the moving support plate (16) passes through the bottom of the power box (15) and is fixedly provided with a vertical sliding rod (4), an end of the vertical sliding rod (4) away from the sliding rod (6) is fixedly provided with a pedal (3), a side of the pedal (3) away from the vertical sliding rod (4) is fixedly provided at the middle part of the upper surface of the elastic bottom plate (2), and the two ends of the bottom of the elastic bottom plate (2) are slidably connected to the inner wall of the slide rail on one side of the upper surface of the base plate (1).

2. A liquid carbon dioxide storage tank pressure relief device according to claim 1, characterized in that: The power box (15) is provided with pressure relief ports on both sides. A connecting pipe (14) is provided in communication with the pressure relief port on the left side of the power box (15). An end of the connecting pipe (14) away from the power box (15) is slidably plugged with an internally threaded pipe (13). A limit plate is provided at the top of one end of the connecting pipe (14) located inside the internally threaded pipe (13). The limit plate is an annular structure. The outer diameter of the limit plate is larger than the inner diameter of the right end of the internally threaded pipe (13). The inner diameter of the limit plate is equal to the inner diameter of the connecting pipe (14). The limit plate is always located inside the internally threaded pipe (13). Slide grooves are fixedly provided on both sides of the inner wall of the power box (15). The inner wall width of the slide groove is the same as the width of the blocking plate (12).

3. A liquid carbon dioxide storage tank pressure relief device according to claim 1, characterized in that: The middle part of the lower pressure plate (8) is slidably sleeved on the outer circumferential surface of the bottom of the internal connecting pipe (11), and telescopic rods (7) are provided at both ends of the bottom of the lower pressure plate (8). A spring is sleeved on the outer circumferential surface of the telescopic rod (7), and the bottom of the spring is fixedly arranged on the bottom of the inner wall of the power box (15).

4. A liquid carbon dioxide storage tank pressure relief device according to claim 1, characterized in that: A trapezoidal sliding block is fixedly provided in the middle of one side of the pedal (3), a trapezoidal sliding groove is fixedly provided in the middle of one side of the supporting vertical plate (5), and one end of the trapezoidal sliding block away from the pedal (3) is slidably connected to the trapezoidal sliding groove in the middle of one side of the supporting vertical plate (5).

5. A liquid carbon dioxide storage tank pressure relief device according to claim 1, characterized in that: Pressure relief ports are arranged on both sides of the middle of the internal connecting pipe (11); the pressure relief ports on both sides of the internal connecting pipe (11) are arranged coaxially with the pressure relief ports on both sides of the power box (15); the diameter of the pressure relief ports on both sides of the internal connecting pipe (11) is the same as the inner wall diameter of the pressure relief connecting pipe (10); the bottom of the internal connecting pipe (11) is sealed; the bottom of the internal connecting pipe (11) is fixed to the bottom of the inner wall of the power box (15) by a support rod; and the top of the blocking plate (12) is provided with a relief port connected to the pressure relief connecting pipe (10).

6. A liquid carbon dioxide storage tank pressure relief device according to claim 1, characterized in that: The outer circumferential surface of the bottom of the external protective tube (9) is fixedly connected to the middle of the lower pressure plate (8), the length of the external protective tube (9) is twice that of the internal connecting tube (11), and the inner wall of the external protective tube (9) is in close contact with the outer wall of the internal connecting tube (11).

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