Liquefied gas storage equipment with stable pressure

Abstract

The utility model discloses liquefied gas storage equipment with stable pressure, and particularly relates to the technical field of liquefied gas storage, the liquefied gas storage equipment comprises a storage tank, the top of the storage tank is provided with an inflation pipe, one side of the inflation pipe is provided with an air leakage hose, the surface of the storage tank is fixedly provided with an adjusting box, and an adjustable rebound structure is arranged in the adjusting box. The adjustable springback structure comprises a supporting cylinder, the supporting cylinder is fixedly installed at the bottom of an inner cavity of the adjusting box, a movable rod is slidably installed in the supporting cylinder, a sliding plate is arranged at the top of the movable rod, and the sliding plate is sleeved with a sealing ring. Automatic pressure relief operation can be conducted on the interiors of the adjusting box and the storage tank, it is guaranteed that the pressure in the storage tank is stable, the elastic force of the spring can be adjusted and controlled, the elastic force of the spring is improved, the situation that the reset effect of the sliding plate is affected due to elasticity loss caused by fatigue is avoided, and the overall using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquefied gas storage, and more specifically, to a liquefied gas storage device with stable pressure. Background Art

[0002] The main component of liquefied natural gas is methane, with a small amount of ethane and propane. Liquefied natural gas is colorless, odorless, non-toxic and non-corrosive. Natural gas can be liquefied under normal pressure and low temperature. Liquefied natural gas storage tanks are usually double-layer metal tanks. The liquefied gas pressure inside is very high. Any improper operation may cause an explosion. It is a special equipment.

[0003] Existing liquefied natural gas storage tanks do not have a pressure regulation function, and pressure control requires staff to control, which greatly reduces the practicality of the equipment.

[0004] After searching, the authorization announcement number is CN215807847U The Chinese patent discloses a pressure-stable liquefied gas storage device. The structure has a good adjustment function and does not require real-time monitoring by staff. It has a good automation effect and greatly improves the practicality of the equipment.

[0005] However, when this structure is actually used, the slide of this structure will continuously compress and reset the spring during sliding and resetting, causing the spring to lose its elasticity due to fatigue after long-term use, affecting the resetting effect of the slide, and causing the sealing ring to rub against the inner wall of the regulating box for a long time, which is prone to wear. The sealing ring is located inside the regulating box as a whole and is difficult to remove, which creates a burden for the operator's subsequent maintenance. In view of this, the utility model proposes a liquefied gas storage device with stable pressure. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a liquefied gas storage device with stable pressure to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a pressure-stable liquefied gas storage device, comprising a storage tank, an inflation tube is provided on the top of the storage tank, an air deflation hose is provided on one side of the inflation tube, and a regulating box is fixedly provided on the surface of the storage tank.

[0008] In order to facilitate the adjustment of the elasticity of the spring and ensure that the slide plate has a good reset effect, preferably, an adjustable rebound structure is provided inside the adjusting box, and the adjustable rebound structure includes a support tube, which is fixedly installed at the bottom of the inner cavity of the adjusting box, and a movable rod is slidably installed inside the support tube, and a slide plate is provided on the top of the movable rod, and a sealing ring is provided on the outside of the slide plate, and a movable seat is provided at the bottom end of the movable rod inside the support tube, and a screw is provided at the bottom of the movable seat, and a spring is provided on the outside of the screw at the bottom of the movable seat, and a locking nut is installed on the external thread of the screw, and the screw extends to the outside of the adjusting box, and the screw is slidably connected to the support tube and the adjusting box respectively, and the two ends of the spring are fixedly connected to the movable seat and the support tube respectively, and the sealing ring fits against the inner wall of the adjusting box.

[0009] In order to facilitate the carrying of the storage tank and to facilitate the inflation and depressurization operations, preferably, a handle is provided on the top of the storage tank, an inflation valve is installed on the outside of the inflation tube, and a deflation valve is provided on the outside of the deflation hose.

[0010] In order to facilitate the disassembly and installation between the sealing cover and the regulating box, preferably, a sealing cover is provided inside the regulating box, the storage tank is connected to the sealing cover through an air deflation hose, and a plurality of threaded holes are provided at the connection between the sealing cover and the regulating box, and bolts are installed on the internal threads of the threaded holes.

[0011] In order to facilitate pressure relief inside the storage tank and the regulating box, preferably, one end of the regulating box is connected to an air outlet pipe, and an electric valve is provided on the outside of the air outlet pipe.

[0012] In order to achieve the effect of detecting the pressure inside the regulating box, preferably, pressure sensors are installed on both inner walls of the regulating box, a controller is fixedly installed on the outside of the regulating box, a warning light is provided on the top of the controller, and the controller is electrically connected to the electric valve, warning light and pressure sensor respectively.

[0013] The technical effects and advantages of this utility model are:

[0014] 1. By setting up an adjustable rebound structure, the sliding adjustment screw moves the movable seat connected to the spring, which can be used to control the extension and contraction length of the spring, and then regulate the elasticity of the spring. After the elasticity of the spring is adjusted, the screw is locked and fixed with a locking nut to ensure that the adjusted spring maintains its state. After the elasticity of the spring is adjusted, the elasticity of the spring can be improved, ensuring that the gas rises after the slide is reset, avoiding the loss of elasticity of the spring due to fatigue after long-term use, which affects the reset effect of the slide;

[0015] 2. The detachable sealing cover and the regulating box make the top of the regulating box open. The operator can then slide the screw upwards continuously to adjust the elasticity of the spring and extend the slide plate to the outside of the regulating box, making it easier to remove and replace the sealing ring on the outside of the slide plate.

[0016] 3. The pressure inside the regulating box increases through the deflation hose, which will drive the slide to move and drive the movable rod to slide inside the support tube to squeeze the spring. When the slide contacts the pressure sensor, it means that the interior of the storage tank is full of liquefied gas. The pressure sensor will send a signal to the controller, and the controller will control the electric valve to open to relieve the pressure inside the storage tank and the regulating box. At the same time, the controller will control the warning light to start working to remind the user to close the inflation valve and stop supplying liquefied gas to the interior of the storage tank, so as to ensure the pressure inside the storage tank is stable and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the surface structure of the regulating box of the present utility model.

[0019] Figure 3 This is a schematic diagram of the connection structure between the sealing cover and the regulating box of the utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the regulating box of the present utility model.

[0021] Figure 5 For the utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0022] The accompanying drawings are marked as follows: 1. Storage tank; 2. Inflation tube; 3. Deflation hose; 4. Adjustment box; 5. Support tube; 6. Movable rod; 7. Slide plate; 8. Sealing ring; 9. Movable seat; 10. Screw; 11. Spring; 12. Locking nut; 13. Handle; 14. Inflation valve; 15. Deflation valve; 16. Sealing cover; 17. Bolt; 18. Exhaust pipe; 19. Electric valve; 20. Pressure sensor; 21. Controller; 22. Warning light. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] As attached Figure 1-5 The illustrated embodiment shows a pressure-stable liquefied gas storage device, comprising a storage tank 1 , a gas charging pipe 2 being provided on the top of the storage tank 1 , a gas deflation hose 3 being provided on one side of the gas charging pipe 2 , and a regulating box 4 being fixedly provided on the surface of the storage tank 1 .

[0025] Specifically, in this structure, the storage tank 1 is used to store liquefied gas, the inflation pipe 2 is used to transport the liquefied gas to the interior of the storage tank 1, and the deflation hose 3 is used to relieve the pressure inside the storage tank 1, thereby ensuring that the pressure inside the storage tank 1 is stable and improving safety.

[0026] In a specific embodiment, as shown in the attached Figure 4 、 5 As shown, the interior of the adjusting box 4 is provided with an adjustable rebound structure, and the adjustable rebound structure includes a support tube 5, which is fixedly installed at the bottom of the inner cavity of the adjusting box 4, and a movable rod 6 is slidably installed inside the support tube 5. A slide plate 7 is provided on the top of the movable rod 6, and a sealing ring 8 is provided on the outside of the slide plate 7. A movable seat 9 is provided at the bottom end of the movable rod 6 inside the support tube 5, and a screw 10 is provided at the bottom of the movable seat 9. A spring 11 is provided on the outside of the screw 10 at the bottom of the movable seat 9, and a locking nut 12 is installed on the external thread of the screw 10. The screw 10 extends to the outside of the adjusting box 4, and the screw 10 is slidably connected to the support tube 5 and the adjusting box 4 respectively. The two ends of the spring 11 are fixedly connected to the movable seat 9 and the support tube 5 respectively, and the sealing ring 8 fits the inner wall of the adjusting box 4.

[0027] Specifically, in this structure, when the pressure inside the storage tank 1 is transmitted to the inside of the regulating box 4 through the degassing hose 3, as the pressure inside the regulating box 4 continues to increase, the slide plate 7 will slide downward inside the regulating box 4, and drive the movable rod 6 to slide inside the support tube 5, squeezing the spring 11, indicating that the storage tank 1 is now full of liquefied gas;

[0028] After the pressure is released, the spring 11 is squeezed and reset, driving the slide plate 7 to extend upward, and squeezing the gas to make the gas move upward, thereby increasing the utilization rate of the liquefied gas, meeting the needs of users, and facilitating use;

[0029] Taking into account that the spring 11 will lose its elasticity due to fatigue after long-term use, thereby affecting the resetting effect of the slide plate 7, the operator can slide the adjusting screw 10 to move the movable seat 9 connected to the spring 11, which can be used to control the stretching and contraction length of the spring 11, and thus regulate the elasticity of the spring 11. After the elasticity of the spring 11 is adjusted, the screw 10 is locked and fixed with the locking nut 12. After the elasticity of the spring 11 is adjusted, the elasticity of the spring 11 can be improved to ensure that the gas is driven to rise after the slide plate 7 is reset.

[0030] In a specific embodiment, as shown in the attached Figure 1 As shown, a handle 13 is provided on the top of the storage tank 1 , an inflation valve 14 is installed on the outside of the inflation tube 2 , and an air release valve 15 is provided on the outside of the air release hose 3 .

[0031] Specifically, in this structure, the handle 13 is provided to facilitate carrying the storage tank 1, the inflation valve 14 is used to control the amount of gas inside the inflation tube 2 entering the storage tank 1, and the deflation valve 15 is used to open the deflation hose 3 to perform pressure relief operation on the interior of the storage tank 1.

[0032] In a specific embodiment, as shown in the attached Figure 2 、 3 As shown, a sealing cover 16 is provided inside the regulating box 4, and the storage tank 1 is connected to the sealing cover 16 through the air release hose 3. A plurality of threaded holes are provided at the connection between the sealing cover 16 and the regulating box 4, and bolts 17 are installed on the internal threads of the threaded holes.

[0033] Specifically, in this structure, the sealing cover 16 can be detachably connected to the regulating box 4 by bolts 17, which facilitates the disassembly of the sealing cover 16 and the regulating box 4, and then facilitates the disassembly of the sealing ring 8 inside the regulating box 4 and located outside the slide 7, thereby avoiding the sealing ring 8 from sliding on the inner wall of the regulating box 4 for a long time and causing wear, which affects the use effect of the sealing ring 8.

[0034] In a specific embodiment, as shown in the attached Figure 2 、 3 As shown, one end of the regulating box 4 is connected to an air outlet pipe 18 , and an electric valve 19 is provided outside the air outlet pipe 18 .

[0035] Specifically, in this structure, after the electric valve 19 is opened, the pressure inside the storage tank 1 and the regulating box 4 can be released through the air outlet pipe 18 .

[0036] In a specific embodiment, as shown in the attached Figure 2 、 3 As shown in Figure 4, pressure sensors 20 are installed on both inner walls of the regulating box 4, a controller 21 is fixedly installed on the outside of the regulating box 4, a warning light 22 is set on the top of the controller 21, and the controller 21 is electrically connected to the electric valve 19, the warning light 22 and the pressure sensor 20 respectively.

[0037] Specifically, in this structure, when the gas pressure inside the storage tank 1 enters the interior of the regulating box 4 and causes the slide 7 to slide, the gas pressure sensor 20 with model number MPXHZ6250A detects the pressure, indicating that the interior of the storage tank 1 is already filled with liquefied gas. The pressure sensor 20 will send a signal to the controller 21, and the controller 21 will control the electric valve 19 to open to relieve the pressure inside the storage tank 1 and the regulating box 4. At the same time, the controller 21 will control the warning light 22 to start working to remind the user to close the inflation valve 14 and stop introducing liquefied gas into the interior of the storage tank 1. This is specifically disclosed in the prior art and will not be improved in this application, so it will not be described in detail.

[0038] Working principle of this utility model:

[0039] The utility model provides a liquefied gas storage device with stable pressure. Specifically, first, the gas filling pipe 2 is used to introduce liquefied gas into the interior of the storage tank 1, and the gas relief valve 15 is opened. When the pressure inside the storage tank 1 increases, the pressure inside the regulating box 4 will increase accordingly through the gas relief hose 3, thereby driving the slide plate 7 to move, and driving the movable rod 6 to slide inside the support tube 5, thereby squeezing the spring 11.

[0040] When the slide plate 7 contacts the pressure sensor 20, it indicates that the storage tank 1 is filled with liquefied gas. The pressure sensor 20 sends a signal to the controller 21, which controls the electric valve 19 to open, thereby relieving the pressure inside the storage tank 1 and the regulating box 4. At the same time, the controller 21 controls the warning light 22 to start working, thereby reminding the user to close the charging valve 14 and stop the supply of liquefied gas into the storage tank 1.

[0041] As an improvement of the present invention, it is considered that the spring 11 will lose its elasticity due to fatigue after long-term use, affecting the reset effect of the slide plate 7, and in order to facilitate the disassembly and replacement of the sealing ring 8 outside the slide plate 7, it is avoided that the sealing ring 8 is worn out by sliding on the inner wall of the adjustment box 4 for a long time, affecting the use effect of the sealing ring 8. Specifically, by sliding the adjusting screw 10, the movable seat 9 connected to the spring 11 is moved, which can be used to control the extension and contraction length of the spring 11, and then the elasticity of the spring 11 is regulated. After the elasticity of the spring 11 is adjusted, the screw 10 is locked and fixed by the locking nut 12 to ensure that the adjusted spring 11 maintains its state. After the elasticity of the spring 11 is adjusted, the elasticity of the spring 11 can be improved to ensure that the gas is driven to rise after the slide plate 7 is reset.

[0042] Moreover, the sealing cover 16 can be disassembled from the adjusting box 4 by means of the bolts 17, which facilitates the disassembly between the sealing cover 16 and the adjusting box 4. By continuously sliding the screw 10 upwards, not only the elasticity of the spring 11 can be adjusted, but also the slide plate 7 can be conveniently extended to the outside of the adjusting box 4, thereby facilitating the removal and replacement of the sealing ring 8 outside the slide plate 7.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressure-stable liquefied gas storage device, comprising a storage tank (1), characterized in that: An inflation tube (2) is provided on the top of the storage tank (1), a deflation hose (3) is provided on one side of the inflation tube (2), an adjustment box (4) is fixedly provided on the surface of the storage tank (1), and an adjustable rebound structure is provided inside the adjustment box (4); The adjustable rebound structure comprises a support tube (5), the support tube (5) being fixedly mounted on the bottom of the inner cavity of the adjustment box (4), a movable rod (6) being slidably mounted inside the support tube (5), a slide plate (7) being provided on the top of the movable rod (6), and a sealing ring (8) being sleeved on the outside of the slide plate (7); A movable seat (9) is provided inside the support tube (5) at the bottom end of the movable rod (6), a screw rod (10) is provided at the bottom of the movable seat (9), a spring (11) is provided outside the screw rod (10) at the bottom of the movable seat (9), and a locking nut (12) is installed on the external thread of the screw rod (10).

2. The pressure-stabilized liquefied gas storage device according to claim 1, characterized in that: The top of the storage tank (1) is provided with a handle (13), the outside of the inflation tube (2) is provided with an inflation valve (14), and the outside of the deflation hose (3) is provided with a deflation valve (15).

3. The pressure-stabilized liquefied gas storage device according to claim 1, characterized in that: A sealing cover (16) is provided inside the regulating box (4), and the storage tank (1) is connected to the sealing cover (16) via a deflation hose (3). A plurality of threaded holes are provided at the connection between the sealing cover (16) and the regulating box (4), and bolts (17) are installed in the internal threads of the threaded holes.

4. The pressure-stabilized liquefied gas storage device according to claim 1, characterized in that: One end of the regulating box (4) is connected to an air outlet pipe (18), and an electric valve (19) is provided outside the air outlet pipe (18).

5. The pressure-stabilized liquefied gas storage device according to claim 1, characterized in that: Pressure sensors (20) are installed on both inner walls of the regulating box (4), a controller (21) is fixedly installed on the outside of the regulating box (4), a warning light (22) is provided on the top of the controller (21), and the controller (21) is electrically connected to the electric valve (19), the warning light (22) and the pressure sensor (20) respectively.

6. The pressure-stabilized liquefied gas storage device according to claim 1, characterized in that: The screw rod (10) extends to the outside of the regulating box (4), and the screw rod (10) is slidably connected to the support tube (5) and the regulating box (4), respectively. The two ends of the spring (11) are fixedly connected to the movable seat (9) and the support tube (5), respectively. The sealing ring (8) is attached to the inner wall of the regulating box (4).

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