Pressure relief device of liquid carbon dioxide storage tank

Abstract

The pressure relief device of the liquid carbon dioxide storage tank comprises a storage tank, the upper surface of the storage tank is fixedly connected with a valve body, the bottom of the inner side face of the valve body is connected with a valve element in a sliding mode, and the upper surface of the valve element is fixedly connected with a spring. According to the pressure relief device of the liquid carbon dioxide storage tank, three groups of pressure relief pipes, a connecting rod, a supporting arm, an induction button and an electric bell are arranged, so that the pressure relief speed of the device is increased, the device can realize graded pressure relief, and the safety of the device can be improved; when the storage tank is decompressed, the other end of the supporting arm presses the sensing buttons, so that the electric bell gives out warning sound to remind a worker that the storage tank is decompressed and is careful, the electric bell can be provided with three warning sounds corresponding to the three sets of sensing buttons, the device can give out different warning sounds according to different levels of pressure relief speeds, the effect is better, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief device technology, and in particular to a pressure relief device for a liquid carbon dioxide storage tank. Background Technology

[0002] Liquid carbon dioxide refers to carbon dioxide gas liquefied into a liquid form under high pressure and low temperature. Liquid carbon dioxide is usually stored in specialized storage tanks, which are typically equipped with pressure relief devices. These devices can be adjusted according to the contents stored in the pressure vessel to prevent excessive internal pressure from causing the pressure vessel to rupture or even explode.

[0003] A search revealed Chinese Patent Publication No. CN215807871U, which discloses a pressure relief device for a liquid carbon dioxide storage tank. The device includes a carbon dioxide storage tank, a pressure relief box, and a pressure relief assembly. The pressure relief box is located on one side of the carbon dioxide storage tank, and the pressure relief assembly is located inside the pressure relief box. This invention utilizes the coordinated use of a movable block, a turbine fan, a spiral spring, a fixed block, a slider, and a sliding groove. Compared to conventional pressure relief devices, this invention solves the problem of spring force attenuation caused by prolonged operation of existing pressure relief devices, thereby reducing the impact force of high-pressure gas.

[0004] While the pressure relief device in the aforementioned patent solves the problem of spring force attenuation, the airflow during pressure relief has a certain impact force, which can cause injury to nearby workers. Furthermore, the existing pressure relief devices for liquid carbon dioxide storage tanks cannot alert nearby workers to stay away during pressure relief, resulting in low safety. Therefore, it is necessary to design a pressure relief device for liquid carbon dioxide storage tanks to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a pressure relief device for a liquid carbon dioxide storage tank, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A pressure relief device for a liquid carbon dioxide storage tank includes a storage tank, a valve body fixedly connected to the upper surface of the storage tank, a valve core slidably connected to the bottom of the inner side of the valve body, a spring fixedly connected to the upper surface of the valve core, and a pressure relief pipe fixedly connected to the outer surface of the valve body; a valve stem fixedly connected to the middle of the upper surface of the valve core, a connecting rod fixedly connected to one end of the valve stem, a fixing plate fixedly connected to one side of the upper surface of the valve body, a support rod fixedly connected to the middle of the inner side of the fixing plate, support arms rotatably connected to both sides of the outer surface of the support rod, a sensor button fixedly connected to one side of the inner side of the fixing plate, and an electric bell fixedly connected to the other side of the upper surface of the valve body.

[0008] In order to reduce the impact of gas on the valve core, the bottom of the valve core is an arc-shaped structure as a pressure relief device for a liquid carbon dioxide storage tank of this utility model.

[0009] In order to enhance the sealing performance of the valve core, as a pressure relief device for a liquid carbon dioxide storage tank of this utility model, a first sealing gasket is fixedly connected to the bottom of the outer surface of the valve core, and a second sealing gasket is fixedly connected to the top of the outer surface of the valve core.

[0010] In order to enhance the stability of valve core movement, as a pressure relief device for a liquid carbon dioxide storage tank of this utility model, guide blocks are fixedly connected to both sides of the upper surface of the valve core, and guide grooves are opened on both sides of the inner side of the valve body.

[0011] In order to facilitate the reset of the support arm, as a pressure relief device for a liquid carbon dioxide storage tank of this utility model, a first torsion spring is fixedly connected to the middle of the outer surface of the support rod, and the two ends of the first torsion spring are fixedly connected to the support arm.

[0012] In order to achieve the effect of facilitating graded pressure relief, the pressure relief device of the liquid carbon dioxide storage tank of this utility model has three sets of pressure relief pipes, and the three sets of pressure relief pipes have different diameters.

[0013] In order to prevent the pressure relief pipe from being blocked by dust, as a pressure relief device for a liquid carbon dioxide storage tank of this utility model, the outer surface of the pressure relief pipe is provided with a threaded groove, and a dust cap is threadedly connected to the outer surface of the threaded groove.

[0014] In order to prevent external gas from entering the valve body, as a pressure relief device for a liquid carbon dioxide storage tank of this utility model, a bracket is fixedly connected to the middle of the inner side of the pressure relief pipe, a second torsion spring is fixedly connected to the middle of the outer surface of the bracket, baffles are fixedly connected to both ends of the second torsion spring, and a fixed rod is rotatably connected to one side of the inner side of the baffle, and the fixed rod is fixedly connected to the bracket.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this utility model, the design incorporates a pressure relief pipe, connecting rod, support arm, sensor button, and electric bell. The pressure relief pipe has three sets, increasing the pressure relief speed and enabling the device to release pressure in stages, thereby improving safety. When the valve core moves upward, the valve rod causes the connecting rod to push one end of the support arm upward, while the other end of the support arm rotates downward around the support rod at a certain angle. Pressing the sensor button triggers the electric bell to emit a warning sound, serving as an alarm to remind staff that the storage tank is being depressurized and to be cautious. The electric bell can be set to three warning sounds, corresponding to the three sets of sensor buttons, allowing the device to emit different warning sounds according to different levels of pressure relief, resulting in better effectiveness and ease of use.

[0017] 2. In this utility model, through the arrangement of the valve core, dust cap, second torsion spring, and baffle, the bottom of the valve core has an arc-shaped structure, which comes into contact with the fluid and has a buffering and protective performance. This can reduce the impact and corrosion of the fluid on the valve core, extend its service life, prevent external dust and other debris from entering, prevent blockage of the pressure relief pipe, and improve the cleanliness of the pressure relief pipe. When depressurizing, the baffle rotates under the action of the air pressure inside the storage tank, opening the pressure relief pipe to release pressure. When not depressurizing, the baffle returns to its original position under the action of the second torsion spring, closing the pressure relief pipe to prevent external gas from entering when not in use, thus ensuring the effectiveness of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the valve body structure according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the valve body according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the support arm structure according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the internal explosion structure of the pressure relief pipe in an embodiment of the present invention.

[0023] In the diagram: 1. Storage tank; 2. Valve body; 3. Valve core; 4. Spring; 5. Pressure relief pipe; 6. Valve stem; 7. Connecting rod; 8. Fixing plate; 9. Support rod; 10. Support arm; 11. Sensor button; 12. Electric bell; 13. First sealing gasket; 14. Second sealing gasket; 15. Guide block; 16. Guide groove; 17. First torsion spring; 18. Threaded groove; 19. Dust cap; 20. Bracket; 21. Second torsion spring; 22. Baffle; 23. Fixing rod. Detailed Implementation

[0024] 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.

[0025] Example

[0026] like Figure 1-5 As shown, a pressure relief device for a liquid carbon dioxide storage tank includes a storage tank 1. A valve body 2 is fixedly connected to the upper surface of the storage tank 1. A valve core 3 is slidably connected to the bottom of the inner side of the valve body 2. A spring 4 is fixedly connected to the upper surface of the valve core 3. A pressure relief pipe 5 is fixedly connected to the outer surface of the valve body 2. A valve stem 6 is fixedly connected to the middle of the upper surface of the valve core 3. A connecting rod 7 is fixedly connected to one end of the valve stem 6. A fixing plate 8 is fixedly connected to one side of the upper surface of the valve body 2. A support rod 9 is fixedly connected to the middle of the inner side of the fixing plate 8. Support arms 10 are rotatably connected to both sides of the outer surface of the support rod 9. A sensor button 11 is fixedly connected to one side of the inner side of the fixing plate 8. An electric bell 12 is fixedly connected to the other side of the upper surface of the valve body 2.

[0027] In practical use, through the arrangement of valve core 3, spring 4, pressure relief pipe 5, connecting rod 7, support arm 10, sensor button 11, and electric bell 12, valve body 2 is fixed to the upper surface of storage tank 1. Storage tank 1 stores liquid carbon dioxide. When the internal pressure of storage tank 1 becomes too high, valve core 3 moves upward under pressure, while spring 4 is compressed, opening the pressure relief pipe 5 to relieve pressure on storage tank 1, reducing the possibility of rupture or damage and increasing practicality. After pressure relief, valve core 3 returns to its original position under the elastic action of spring 4, blocking the bottom opening of valve body 2. Three sets of pressure relief pipes 5 are provided, improving the efficiency of installation. The adjustable pressure relief speed allows the device to release pressure in stages, thereby improving its safety. Simultaneously, when the valve core 3 moves upward, the valve stem 6 moves accordingly, causing the connecting rod 7 to push one end of the support arm 10 upward. The other end of the support arm 10 rotates downward around the support rod 9 at a certain angle. Pressing the sensor button 11 causes the electric bell 12 to emit a warning sound, serving as an alarm to remind personnel that the storage tank 1 is being depressurized and to be cautious. The electric bell 12 can be set with three warning sounds, corresponding to three sets of sensor buttons 11, allowing the device to emit different warning sounds according to different pressure relief speeds, resulting in better effectiveness and ease of use.

[0028] In this embodiment, the bottom of the valve core 3 has an arc-shaped structure.

[0029] In practical use, the valve core 3 is designed with an arc-shaped bottom that comes into contact with the fluid, providing buffering and protection. This reduces the impact and corrosion of the fluid on the valve core 3, extending its service life.

[0030] In this embodiment, a first sealing gasket 13 is fixedly connected to the bottom of the outer surface of the valve core 3, and a second sealing gasket 14 is fixedly connected to the top of the outer surface of the valve core 3.

[0031] In practical use, the first sealing gasket 13 and the second sealing gasket 14 enhance the sealing at the connection between the valve core 3 and the inner side of the valve body 2. The double sealing structure enhances the sealing effect and prevents air and liquid leakage.

[0032] In this embodiment, guide blocks 15 are fixedly connected to both sides of the upper surface of the valve core 3, and guide grooves 16 are opened on both sides of the inner side of the valve body 2.

[0033] In practical use, the guide block 15 is fixed on the upper surface of the valve core 3 and slides inside the guide groove 16 as the valve core 3 moves, making the movement of the valve core 3 more stable and avoiding rotational deviation.

[0034] In this embodiment, a first torsion spring 17 is fixedly connected to the middle of the outer surface of the support rod 9, and the two ends of the first torsion spring 17 are fixedly connected to the support arm 10.

[0035] In practical use, the first torsion spring 17 is set so that its two ends are connected to the support arm 10, allowing the support arm 10 to be reset after use for easy use next time.

[0036] In this embodiment, there are three sets of pressure relief pipes 5, and the diameters of the three sets of pressure relief pipes 5 are different.

[0037] In practical use, by setting up pressure relief pipes 5, the three sets of pressure relief pipes 5 have different diameters, which allows the device to release pressure in stages, thereby improving the safety of the device and meeting the requirements of the device to make pressure changes in response to different pressure demands. This avoids damage to the storage tank 1 due to excessive pressure difference, and reduces the failure rate of the storage tank 1.

[0038] In this embodiment, the outer surface of the pressure relief pipe 5 is provided with a threaded groove 18, and a dust cap 19 is threadedly connected to the outer surface of the threaded groove 18.

[0039] In practical use, the dust cap 19 is threaded to one end of the pressure relief pipe 5 through the threaded groove 18, which blocks the pipe opening and prevents external dust and other debris from entering, thus preventing the pipe opening from becoming blocked and improving the cleanliness of the pressure relief pipe 5.

[0040] In this embodiment, a bracket 20 is fixedly connected to the middle of the inner side of the pressure relief pipe 5, and a second torsion spring 21 is fixedly connected to the middle of the outer surface of the bracket 20. Both ends of the second torsion spring 21 are fixedly connected to baffles 22, and a fixing rod 23 is rotatably connected to one side of the inner side of the baffle 22. The fixing rod 23 is fixedly connected to the bracket 20.

[0041] In practical use, through the setting of the second torsion spring 21 and the baffle 22, the fixing rod 23 is fixed to the inner side of the bracket 20, and the baffle 22 is rotatably connected to the outer surface of the fixing rod 23 and connected to the second torsion spring 21. When depressurizing, the baffle 22 rotates under the action of the gas pressure inside the storage tank 1, opening the pressure relief pipe 5 to release pressure. When not depressurizing, under the action of the second torsion spring 21, the baffle 22 resets and closes the pressure relief pipe 5 to prevent external gas from entering when not in use, so as to ensure the effectiveness of the device.

[0042] Working principle: During use, storage tank 1 stores liquid carbon dioxide. When the internal pressure is too high, valve core 3 moves upward under pressure, spring 4 is compressed, opening the pressure relief pipe 5 to relieve pressure in storage tank 1. The three sets of pressure relief pipes 5 have different diameters, allowing the device to relieve pressure in stages. Dust cap 19 improves the cleanliness of the pressure relief pipe 5. Baffle 22 rotates under the pressure inside storage tank 1, opening the pressure relief pipe 5 to relieve pressure. When not relieving pressure, baffle 22 rotates under the action of the second torsion spring 21. Reset the valve core 3 to close the pressure relief pipe 5 to prevent external gas from entering when not in use. When the valve core 3 moves upward, the valve stem 6 moves accordingly, causing the connecting rod 7 to push one end of the support arm 10 upward. The other end of the support arm 10 rotates downward at a certain angle with the support rod 9 as the center. Press the sensor button 11 to make the electric bell 12 sound an alarm, which serves as a reminder and alarm to remind the staff that the storage tank 1 is being depressurized and to pay attention to safety. After the depressurization is completed, the valve core 3 resets under the elastic action of the spring 4, blocking the bottom opening of the valve body 2.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pressure relief device for a liquid carbon dioxide storage tank, comprising a storage tank (1), characterized in that: A valve body (2) is fixedly connected to the upper surface of the storage tank (1). A valve core (3) is slidably connected to the bottom of the inner side of the valve body (2). A spring (4) is fixedly connected to the upper surface of the valve core (3). A pressure relief pipe (5) is fixedly connected to the outer surface of the valve body (2). A valve stem (6) is fixedly connected to the middle of the upper surface of the valve core (3). A connecting rod (7) is fixedly connected to one end of the valve stem (6). A fixing plate (8) is fixedly connected to one side of the upper surface of the valve body (2). A support rod (9) is fixedly connected to the middle of the inner side of the fixing plate (8). Support arms (10) are rotatably connected to both sides of the outer surface of the support rod (9). A sensor button (11) is fixedly connected to one side of the inner side of the fixing plate (8). An electric bell (12) is fixedly connected to the other side of the upper surface of the valve body (2).

2. The pressure relief device for a liquid carbon dioxide storage tank according to claim 1, characterized in that: The bottom of the valve core (3) has an arc-shaped structure.

3. The pressure relief device for a liquid carbon dioxide storage tank according to claim 1, characterized in that: A first sealing gasket (13) is fixedly connected to the bottom of the outer surface of the valve core (3), and a second sealing gasket (14) is fixedly connected to the top of the outer surface of the valve core (3).

4. The pressure relief device for a liquid carbon dioxide storage tank according to claim 1, characterized in that: Guide blocks (15) are fixedly connected to both sides of the upper surface of the valve core (3), and guide grooves (16) are opened on both sides of the inner side of the valve body (2).

5. The pressure relief device for a liquid carbon dioxide storage tank according to claim 1, characterized in that: A first torsion spring (17) is fixedly connected to the middle of the outer surface of the support rod (9), and the two ends of the first torsion spring (17) are fixedly connected to the support arm (10).

6. The pressure relief device for a liquid carbon dioxide storage tank according to claim 1, characterized in that: The number of pressure relief pipes (5) is three sets, and the diameters of the three sets of pressure relief pipes (5) are different.

7. The pressure relief device for a liquid carbon dioxide storage tank according to claim 1, characterized in that: The outer surface of the pressure relief pipe (5) is provided with a threaded groove (18), and a dust cap (19) is threadedly connected to the outer surface of the threaded groove (18).

8. The pressure relief device for a liquid carbon dioxide storage tank according to claim 1, characterized in that: A bracket (20) is fixedly connected to the middle of the inner side of the pressure relief pipe (5). A second torsion spring (21) is fixedly connected to the middle of the outer surface of the bracket (20). Both ends of the second torsion spring (21) are fixedly connected to baffles (22). A fixing rod (23) is rotatably connected to one side of the inner side of the baffle (22). The fixing rod (23) is fixedly connected to the bracket (20).

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