A natural gas storage device for petrochemical industry

Abstract

This utility model relates to the field of energy technology and discloses a natural gas storage device for petrochemicals, including a fixed frame. A fixed ring is fixedly connected to the outer wall of the fixed frame, and an outer tank is fixedly connected to the outer wall of the fixed ring. A pressure-reducing outlet pipe is connected to the inner wall of the outer tank, and a back-pressure valve housing is connected to the outer wall of the pressure-reducing outlet pipe. A spring is fixedly connected to the inner wall of the back-pressure valve housing, and a piston is fixedly connected to the other end of the spring. A pressure-reducing inlet pipe is connected to the inner wall of the back-pressure valve housing, and a connecting pipe is connected to the inner wall of the pressure-reducing inlet pipe. In this utility model, overpressured gas in the inner tank is automatically released to the low-pressure outer tank through the back-pressure valve, or the gas can be released to the outer tank manually by operating the pressure relief valve. The double-layered tank design greatly increases space utilization, reduces costs, and improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of energy technology, and in particular to a natural gas storage device for petrochemical applications. Background Technology

[0002] Natural gas is a mixture of hydrocarbon and non-hydrocarbon gases naturally occurring in underground strata. Its main component is methane, and it also contains small amounts of low-carbon alkanes such as ethane, propane, and butane, as well as non-hydrocarbon gases such as carbon dioxide, nitrogen, and hydrogen sulfide. When burned, it mainly produces carbon dioxide and water. It is a relatively clean type of fossil energy. With the expansion of demand from automobiles, power generation, and other fields, the proportion of natural gas in the global energy structure continues to increase, and its role is constantly being upgraded.

[0003] Natural gas is a clean, efficient, and low-carbon fossil energy source. However, its physical properties and supply-demand dynamics directly drive the demand for storage equipment. As the global energy transitions towards low carbon, the proportion of natural gas in the energy consumption structure continues to increase. In the petrochemical field, natural gas is both a fuel and an important chemical raw material, widely used in industry and civil applications. Storage equipment is crucial for ensuring supply. During the storage and retrieval of natural gas, the pressure inside the storage tank fluctuates due to changes in the amount of medium. Currently, for natural gas storage equipment, overpressured gas is usually stored in external equipment, compressed, and then stored back into the tank, resulting in resource waste and space occupation. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a natural gas storage device for petrochemicals, aiming to improve the space occupation problem in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a natural gas storage device for petrochemicals, comprising a fixed frame, a fixed ring fixedly connected to the outer wall of the fixed frame, an outer tank fixedly connected to the outer wall of the fixed ring, a pressure-reducing outlet pipe connected to the inner wall of the outer tank, a back pressure valve housing connected to the outer wall of the pressure-reducing outlet pipe, a spring fixedly connected to the inner wall of the back pressure valve housing, a piston rod fixedly connected to the other end of the spring, a pressure-reducing inlet pipe connected to the inner wall of the back pressure valve housing, a connecting pipe connected to the inner wall of the pressure-reducing inlet pipe, a pressure relief valve housing connected to the outer wall of the pressure-reducing inlet pipe, a sealing ring fixedly connected to the top of the pressure relief valve housing, a threaded piston rod threadedly connected to the inner wall of the pressure relief valve housing, a knob fixedly connected to the top of the threaded piston rod, an inner tank connected to the outer wall of the pressure-reducing outlet pipe on the right side of the pressure relief valve housing, and a movable structure fixedly connected to the bottom of the fixed frame, the function of which is to move the entire device when a change in position is required.

[0006] As a further description of the above technical solution:

[0007] The movable structure includes a base plate, the top of which is fixedly connected to the bottom of a fixed frame. Multiple fixed outer shells are fixedly connected to the bottom of the base plate. A first rotating column is rotatably connected to the outer wall of each fixed outer shell. A second rotating column is rotatably connected to the outer wall of the fixed outer shell. A locking bar is fixedly connected to the outer wall of the second rotating column. A buckle is rotatably connected to the outer wall of the fixed outer shell. A movable leg is fixedly connected to the outer wall of the first rotating column. A connecting column is rotatably connected to the other end of the movable leg. A connecting rod is fixedly connected to the bottom of the connecting column. A tire is rotatably connected to the outer wall of the connecting rod. A brake block is fixedly connected to the outer wall of the connecting rod.

[0008] As a further description of the above technical solution:

[0009] The inner wall of the outer tank is connected to a safety valve housing, and the inner wall of the safety valve housing is threaded with a knob.

[0010] As a further description of the above technical solution:

[0011] The bottom of the knob two is rotatably connected to the piston column two, and the outer wall of the piston column two is slidably connected to multiple baffles.

[0012] As a further description of the above technical solution:

[0013] A spring is fixedly connected to the bottom of the multiple baffles, and a pressure gauge is connected to the inner wall of the pressure-reducing air intake pipe.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the inner tank is connected to a gas intake pipe, and the inner wall of the gas intake pipe is connected to multiple valves.

[0016] As a further description of the above technical solution:

[0017] The outer wall of the gas intake pipe is connected to a one-way valve, and the outer wall of the inner tank is fixedly connected to a connecting block.

[0018] As a further description of the above technical solution:

[0019] The bottom of the base plate is fixedly connected to a support leg, and the bottom of the support leg is fixedly connected to a frustum rubber pad.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the overpressure gas in the inner tank is automatically released into the low-pressure outer tank through the back pressure valve, or the gas can be released into the outer tank by manually operating the pressure relief valve. The double-layer tank greatly increases the space utilization, reduces costs, and improves work efficiency.

[0022] 2. In this utility model, the entire device can be moved by extending and retracting the bottom movable leg and fixing the locking bar. It also has a braking device that can brake it. When it is not in use, the telescopic leg can be retracted, which does not occupy space. The structure is simple, easy to disassemble and replace, and has a long service life. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a natural gas storage device for petrochemical applications proposed in this utility model;

[0024] Figure 2 This is a partial structural diagram of a pressure-reducing inlet pipe for a natural gas storage device for petrochemical applications, as proposed in this utility model.

[0025] Figure 3 This is a partial structural exploded view of the housing of a pressure relief valve for a natural gas storage device used in petrochemicals, as proposed in this utility model.

[0026] Figure 4 This is a partial structural cross-sectional view of the back pressure valve housing of a natural gas storage device for petrochemical applications proposed in this utility model.

[0027] Figure 5 This is a partial structural diagram of the fixed outer shell of a natural gas storage device for petrochemical applications proposed in this utility model;

[0028] Figure 6 This is a partial structural diagram of the movable leg of a natural gas storage device for petrochemicals proposed in this utility model;

[0029] Figure 7 This is a partial structural diagram of a connecting block for a natural gas storage device for petrochemical applications proposed in this utility model.

[0030] Figure 8 This is a partial structural cross-sectional view of the safety valve housing of a natural gas storage device for petrochemical applications proposed in this utility model.

[0031] Legend:

[0032] 1. Fixed frame; 2. Moving structure; 201. Base plate; 202. Fixed outer shell; 203. Rotating column one; 204. Rotating column two; 205. Clamping bar; 206. Buckle; 207. Moving leg; 208. Connecting column; 209. Connecting rod; 210. Brake block; 211. Tire; 3. Fixed ring; 4. Outer tank; 5. Pressure reducing outlet pipe; 6. Back pressure valve shell; 7. Spring one; 8. Piston column one; 9. Pressure reducing inlet pipe; 10. Connecting pipe; 11. Pressure relief valve housing; 12. Sealing ring; 13. Threaded piston rod; 14. Knob one; 15. Inner tank; 16. Safety valve housing; 17. Piston rod two; 18. Baffle; 19. Spring two; 20. Knob two; 21. Pressure gauge; 22. Check valve; 23. Valve; 24. Support leg; 25. Frustum rubber pad; 26. Connecting block; 27. Air intake pipe. Detailed Implementation

[0033] 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.

[0034] Please see the appendix Figure 1 , attached Figure 3 and attached Figure 4 This utility model provides an embodiment of a natural gas storage device for petrochemical applications, comprising a fixed frame 1, a fixed ring 3 fixedly connected to the outer wall of the fixed frame 1, an outer tank 4 fixedly connected to the outer wall of the fixed ring 3, a pressure-reducing outlet pipe 5 connected to the inner wall of the outer tank 4, a back pressure valve housing 6 connected to the outer wall of the pressure-reducing outlet pipe 5, a spring 7 fixedly connected to the inner wall of the back pressure valve housing 6, a piston rod 8 fixedly connected to the other end of the spring 7, and a pressure-reducing inlet pipe 9 connected to the inner wall of the back pressure valve housing 6 for pressure-reducing inlet. The inner wall of pipe 9 is connected to a connecting pipe 10, the outer wall of pressure-reducing inlet pipe 9 is connected to a pressure relief valve housing 11, the top of pressure relief valve housing 11 is fixedly connected to a sealing ring 12, the inner wall of pressure relief valve housing 11 is threadedly connected to a threaded piston column 13, the top of the threaded piston column 13 is fixedly connected to a knob 14, the outer wall of pressure-reducing outlet pipe 5 on the right side of pressure relief valve housing 11 is connected to an inner tank 15, and the bottom of the fixed frame 1 is fixedly connected to a movable structure 2. The function of the movable structure 2 is to move the entire device when the position needs to be changed.

[0035] Specifically, a fixing ring 3 is fixedly connected to the outer wall of the fixing frame 1. The outer wall of the fixing ring 3 is fixedly connected to the outer tank 4. The inner wall of the outer tank 4 is connected to a pressure-reducing outlet pipe 5. The outer wall of the pressure-reducing outlet pipe 5 is connected to the back pressure valve housing 6, forming a closed gas channel. A spring 7 is fixedly connected to the inner wall of the back pressure valve housing 6. The other end of the spring 7 is connected to the piston rod 8 to achieve the pressure regulation function. At the same time, the inner wall of the back pressure valve housing 6 is also connected to a pressure-reducing inlet pipe 9. The inner wall of the pressure-reducing inlet pipe 9 is connected to the connecting pipe 10, forming a complete gas input channel. The outer wall of the air inlet pipe 9 is also connected to the pressure relief valve housing 11. A sealing ring 12 is fixedly connected to the top of the pressure relief valve housing 11 to ensure the gas sealing. A threaded piston column 13 is connected to the inner wall of the pressure relief valve housing 11 by threads. A knob 14 is fixedly connected to the top of the threaded piston column 13 for easy manual pressure adjustment. In addition, the outer wall of the pressure relief outlet pipe 5 on the right side of the pressure relief valve housing 11 is also connected to an inner tank 15. Finally, a movable structure 2 is fixedly connected to the bottom of the fixed frame 1. The function of this movable structure 2 is to facilitate the movement of the entire equipment when the equipment position needs to be changed.

[0036] Please see the appendix Figure 1 , attached Figure 5 and attached Figure 6 The movable structure 2 includes a base plate 201. The top of the base plate 201 is fixedly connected to the bottom of the fixed frame 1. Multiple fixed shells 202 are fixedly connected to the bottom of the base plate 201. A rotating column 1 203 is rotatably connected to the outer wall of the fixed shell 202. A rotating column 204 is rotatably connected to the outer wall of the fixed shell 202. A locking bar 205 is fixedly connected to the outer wall of the rotating column 204. A buckle 206 is rotatably connected to the outer wall of the fixed shell 202. A moving leg 207 is fixedly connected to the outer wall of the rotating column 1 203. A connecting column 208 is rotatably connected to the other end of the moving leg 207. A connecting rod 209 is fixedly connected to the bottom of the connecting column 208. A tire 211 is rotatably connected to the outer wall of the connecting rod 209. A brake block 210 is fixedly connected to the outer wall of the connecting rod 209.

[0037] Specifically, the movable structure 2 includes a base plate 201, the top of which is fixedly connected to the bottom of the fixed frame 1 to ensure that there is no relative movement between them. Multiple fixed outer shells 202 are fixedly connected to the bottom of the base plate 201. These fixed outer shells 202 are evenly distributed on the bottom of the base plate 201. A rotating column 1 203 is rotatably connected to the outer wall of each fixed outer shell 202, and a rotating column 204 is also rotatably connected to the outer wall of each fixed outer shell 202. A locking bar 205 is fixedly connected to the outer wall of the rotating column 204. Furthermore, each fixed outer shell 202 is also rotatably connected to... There is a buckle 206, and a movable leg 207 is fixedly connected to the outer wall of the rotating column 203. This movable leg 207 can extend or retract to adapt to different terrains and usage needs. The other end of the movable leg 207 is rotatably connected to a connecting column 208. The connecting column 208 serves to connect the movable leg 207 and the connecting rod 209. The bottom of the connecting rod 209 is fixedly connected to a connecting rod 209. A tire 211 is rotatably connected to the outer wall of the connecting rod 209. A brake block 210 is also fixedly connected to the outer wall of the connecting rod 209. The function of the brake block 210 is to clamp the tire 211 when needed to prevent it from rotating excessively.

[0038] Please see the appendix Figure 1 , attached Figure 2 and attached Figure 8 The inner wall of the outer tank 4 is connected to a safety valve housing 16. The inner wall of the safety valve housing 16 is threaded with a knob 20. The bottom of the knob 20 is rotatably connected to a piston column 17. The outer wall of the piston column 17 is slidably connected to multiple baffles 18. The bottom of the multiple baffles 18 is fixedly connected to a spring 19. The inner wall of the pressure reducing air inlet pipe 9 is connected to a pressure gauge 21.

[0039] Specifically, a safety valve housing 16 is installed on the inner wall of the outer tank 4. This safety valve housing 16 is connected to a knob 20 via threads on the inner wall. The bottom of the knob 20 is rotatable and connected to a piston rod 17. Multiple baffles 18 are slidably connected to the outer wall of the piston rod 17, and springs 19 are fixedly connected to the bottom of these baffles 18. In addition, a pressure gauge 21 is connected to the inner wall of the pressure-reducing inlet pipe 9.

[0040] Please see the appendix Figure 1 , attached Figure 5 and attached Figure 7 The inner wall of the inner tank 15 is connected to a gas intake pipe 27, the inner wall of the gas intake pipe 27 is connected to multiple valves 23, the outer wall of the gas intake pipe 27 is connected to a one-way valve 22, the outer wall of the inner tank 15 is fixedly connected to a connecting block 26, the bottom of the bottom plate 201 is fixedly connected to a support leg 24, and the bottom of the support leg 24 is fixedly connected to a frustum rubber pad 25.

[0041] Specifically, the inner wall of the inner tank 15 is connected to a gas extraction pipe 27. Multiple valves 23 are evenly distributed on the inner wall of this pipe 27. These valves 23 control the flow of gas, ensuring that gas can be smoothly extracted from the inner tank 15. A one-way valve 22 is connected to the outer wall of the gas extraction pipe 27. The main function of this one-way valve 22 is to prevent gas backflow, ensuring that gas can only flow out of the inner tank 15 and cannot flow back in. In addition, a connecting block 2 is fixedly connected to the outer wall of the inner tank 15. 6. The function of this connecting block 26 is to fix the inner tank 15 to the outer tank 4 to ensure the stability of the inner tank 15. At the bottom of the base plate 201, a set of support legs 24 are fixedly connected. The main function of these support legs 24 is to support the entire device and ensure its stability during use. At the bottom of the support legs 24, a frustum rubber pad 25 is fixedly connected. The main function of this frustum rubber pad 25 is to absorb shock and prevent slippage, ensuring that the entire device will not cause safety hazards due to vibration or slippage during use.

[0042] Working principle: When the air pressure in the inner tank 15 is too high, the gas enters the back pressure valve housing 6 through the pressure reducing inlet pipe 9, compressing the piston column 8 and causing the spring 7 to contract. Then, the gas enters the outer tank 4 through the pressure reducing outlet pipe 5. When the air pressure in the inner tank 15 is normal, the piston column 8 moves downward to close the pressure reducing inlet pipe 9 due to the action of the spring 7, stopping the gas discharge. Alternatively, the pressure gauge 21 can be observed to determine whether pressure relief is needed. Rotating the knob 14 moves the threaded piston column 13 upward, allowing the gas to enter the pressure reducing outlet pipe 5 through the pressure reducing inlet pipe 9 and then enter the inner tank 15.

[0043] When the device needs to be moved, remove the latch 206. The locking rod 205 rotates downward due to gravity, straightening the moving leg 207. Rotate the locking rod 205 back to its original position and re-lock the locking rod 205 with the latch 206. At this point, the device can move. Due to the action of the connecting column 208, it can turn during movement. When it reaches the target position, the brake block 210 is used for braking. Remove the latch 206, rotate the moving leg 207 back to its original position, rotate the locking rod 205 again, and lock the locking rod 205 with the latch 206. At this time, the support leg 24 supports the device, and the movement of the device is completed.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A natural gas storage device for petrochemical applications, comprising a mounting frame (1), characterized in that: A fixing ring (3) is fixedly connected to the outer wall of the fixing frame (1). An outer tank (4) is fixedly connected to the outer wall of the fixing ring (3). A pressure-reducing outlet pipe (5) is connected to the inner wall of the outer tank (4). A back pressure valve housing (6) is connected to the outer wall of the pressure-reducing outlet pipe (5). A spring (7) is fixedly connected to the inner wall of the back pressure valve housing (6). A piston rod (8) is fixedly connected to the other end of the spring (7). A pressure-reducing inlet pipe (9) is connected to the inner wall of the back pressure valve housing (6). A connecting pipe (10) is connected to the inner wall of the pressure-reducing inlet pipe (9). The outer wall of the pressure-reducing inlet pipe (9) is connected to the pressure relief valve housing (11). A sealing ring (12) is fixedly connected to the top of the pressure relief valve housing (11). A threaded piston column (13) is threadedly connected to the inner wall of the pressure relief valve housing (11). A knob (14) is fixedly connected to the top of the threaded piston column (13). The outer wall of the pressure-reducing outlet pipe (5) on the right side of the pressure relief valve housing (11) is connected to the inner tank (15). A movable structure (2) is fixedly connected to the bottom of the fixed frame (1). The function of the movable structure (2) is to move the entire device when the position needs to be changed.

2. The natural gas storage equipment for petrochemical use according to claim 1, characterized in that: The movable structure (2) includes a base plate (201), the top of which is fixedly connected to the bottom of the fixed frame (1). Multiple fixed outer shells (202) are fixedly connected to the bottom of the base plate (201). A first rotating column (203) is rotatably connected to the outer wall of each fixed outer shell (202), and a second rotating column (204) is rotatably connected to the outer wall of each fixed outer shell (202). A locking rod (205) is fixedly connected to the outer wall of the second rotating column (204). The outer wall of the fixed housing (202) is rotatably connected to a buckle (206), the outer wall of the rotating column (203) is fixedly connected to a movable leg (207), the other end of the movable leg (207) is rotatably connected to a connecting column (208), the bottom of the connecting column (208) is fixedly connected to a connecting rod (209), the outer wall of the connecting rod (209) is rotatably connected to a tire (211), and the outer wall of the connecting rod (209) is fixedly connected to a brake block (210).

3. A natural gas storage device for petrochemical use according to claim 1, characterized in that: The inner wall of the outer tank (4) is connected to a safety valve housing (16), and the inner wall of the safety valve housing (16) is threaded with a knob (20).

4. A natural gas storage device for petrochemical use according to claim 3, characterized in that: The bottom of the knob two (20) is rotatably connected to the piston column two (17), and the outer wall of the piston column two (17) is slidably connected to multiple baffles (18).

5. A natural gas storage device for petrochemical use according to claim 4, characterized in that: A spring (19) is fixedly connected to the bottom of the multiple baffles (18), and a pressure gauge (21) is connected to the inner wall of the pressure reducing air intake pipe (9).

6. A natural gas storage device for petrochemical use according to claim 1, characterized in that: The inner wall of the inner tank (15) is connected to a gas intake pipe (27), and the inner wall of the gas intake pipe (27) is connected to multiple valves (23).

7. A natural gas storage device for petrochemical use according to claim 6, characterized in that: The outer wall of the gas intake pipe (27) is connected to a one-way valve (22), and the outer wall of the inner tank (15) is fixedly connected to a connecting block (26).

8. A natural gas storage device for petrochemical use according to claim 2, characterized in that: The bottom of the base plate (201) is fixedly connected to a support leg (24), and the bottom of the support leg (24) is fixedly connected to a frustum rubber pad (25).

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