LNG storage tank pressure reducing device

Abstract

The utility model relates to the technical field of LNG storage tanks, and discloses an LNG storage tank pressure reduction device which comprises a spray tower and a tank body, the bottom of the spray tower is fixedly connected with a bottom plate, the bottom of the inner wall of the spray tower is fixedly connected with a diffusion pipe, the right sides of the diffusion pipe and the spray tower penetrate through and are in sliding connection with an exhaust pipe, and the exhaust pipe is connected with an exhaust pipe. A connecting pipe is rotatably connected to the middle of the top of the spraying tower, a liquid medicine barrel is fixedly connected to the top of the outer wall of the connecting pipe, uniformly-distributed nozzles are arranged on the top of the outer wall of the connecting pipe, and a worm wheel penetrates through and is fixedly connected to the top of the middle of the outer wall of the connecting pipe; rotating plates are fixedly connected to the left side and the right side of the front end of the top of the spraying tower. According to the gas degradation device, when the pressure intensity is too large, the first valve is opened, redundant gas can be rapidly diffused to the whole spray tower through the diffusion pipe, and the brake motor drives the worm to rotate, so that the worm gear, the connecting pipe and the nozzle are driven to rotate, the nozzle sprays liquid medicine, and the gas is rapidly degraded.

Description

Technical Field

[0001] This utility model relates to the field of LNG storage tank technology, specifically to an LNG storage tank depressurization device. Background Technology

[0002] LNG storage tanks are specialized equipment used to store liquefied natural gas (LNG). They typically employ a double-layer metal structure with excellent thermal insulation properties, effectively reducing heat transfer and preventing LNG vaporization. The materials used must be resistant to low temperatures to ensure stable performance at low temperatures.

[0003] The LNG storage tank pressure reduction device is used to control the pressure inside the LNG storage tank. When the pressure inside the tank exceeds the set value, the safety valve opens to release some gas to reduce the pressure. This effectively prevents safety accidents caused by overpressure and ensures the safe and stable operation of the LNG storage tank.

[0004] Existing LNG storage tank depressurization devices have the following problems: it is inconvenient to quickly handle the ejected gas; to avoid excessive pressure, the gas needs to be released, and since the released gas may be harmful to the human body, workers usually need to wear protective gear when operating it. This not only cannot guarantee safety, but also easily pollutes the environment. In order to address the above problems, an LNG storage tank depressurization device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an LNG storage tank depressurization device that solves the problem of inconvenient and rapid processing of ejected gas in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an LNG storage tank depressurization device, comprising a spray tower and a tank body, wherein a base plate is fixedly connected to the bottom of the spray tower, a diffuser is fixedly connected to the bottom of the inner wall of the spray tower, an exhaust pipe is slidably connected through the diffuser and the right side of the spray tower, a connecting pipe is rotatably connected to the top center of the spray tower, a liquid tank is fixedly connected to the top of the outer wall of the connecting pipe, evenly distributed nozzles are provided on the top of the outer wall of the connecting pipe, a worm gear is fixedly connected through and to the top center of the connecting pipe, rotating plates are fixedly connected to the left and right sides of the top front end of the spray tower, a brake motor is fixedly connected to the left side of the left rotating plate, a worm is fixedly connected to the output end of the brake motor, the worm is meshed with the worm gear, and snap-fit ​​components are provided at the front and rear ends of the top of the tank body.

[0007] By adopting the above technical solution, when the pressure is too high, the first valve is opened, and the excess gas will quickly diffuse to the entire spray tower through the diffuser. The brake motor drives the worm gear to rotate, which in turn drives the worm wheel, connecting pipe and nozzle to rotate. The nozzle sprays out liquid medicine to quickly degrade the gas.

[0008] As a further description of the above technical solution: the snap-fit ​​assembly includes a sleeve, the bottom of which is fixedly connected to the tank body, a push rod slidably connected to the inner wall of the sleeve, a spring fixedly connected to one end of the push rod and the sleeve, a pull bar fixedly connected to the top of the push rod, the pull bar slidably connected to the sleeve, a mounting base penetrating and slidably connected to the middle of the top of the tank body, a pressure gauge fixedly connected to the top of the mounting base, insertion holes on both the left and right sides of the middle of the top of the tank body, inserts slidably connected to the inner wall of the insertion holes, one side of the inserts being fixedly connected to the mounting base, and the other end of the push rod being slidably connected to the mounting base.

[0009] By adopting the above technical solution, when the pressure gauge is being repaired, the push rod can be moved along the slide groove by the pull rod. After the push rod is detached from the mounting base, the pressure gauge can be pulled out for repair.

[0010] As a further description of the above technical solution: a sliding groove is provided at the top of the sleeve, and the inner wall of the sliding groove is slidably connected to the pull bar.

[0011] By adopting the above technical solution, the groove allows the pull bar to slide stably.

[0012] As a further description of the above technical solution: mounting holes are provided at the four top corners of the base plate.

[0013] By adopting the above technical solution, mounting holes are used to install the base plate.

[0014] As a further description of the above technical solution: both the front and rear ends of the bottom of the tank are fixedly connected to fixing plates, and the bottom of the fixing plates is fixedly connected to the bottom plate.

[0015] By adopting the above technical solution, a fixing plate is used to install the tank.

[0016] As a further description of the above technical solution: a first valve is provided on the top of the outer wall of the exhaust pipe.

[0017] By adopting the above technical solution, the first valve controls whether the exhaust pipe is unobstructed.

[0018] As a further description of the above technical solution: a drain pipe is connected through and fixedly connected to the bottom middle of the tank, and a second valve is provided on the outer wall of the drain pipe.

[0019] By adopting the above technical solution, the second valve is used to control whether the pipeline is unobstructed.

[0020] As a further description of the above technical solution: a fixing member is fixedly connected to the rear end of the medicine tank, and the other end of the fixing member is fixedly connected to the spray tower. A sealing plug is threaded through and connected to the front end of the top left side of the spray tower.

[0021] By adopting the above technical solution, fasteners are used to install the liquid tank, and sealing plugs are used to seal the spray tower.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. The present invention provides an LNG storage tank depressurization device. When the pressure is too high, the first valve is opened and the excess gas will be rapidly diffused to the entire spray tower through the diffuser. The brake motor drives the worm gear to rotate, thereby driving the worm wheel, connecting pipe and nozzle to rotate. The nozzle sprays out liquid medicine to quickly degrade the gas.

[0024] 2. The LNG storage tank pressure reduction device provided by this utility model allows the pressure gauge to be inspected by pulling the pull rod along the slide groove. After the push rod is removed from the mounting base, the pressure gauge can be pulled out for inspection. Attached Figure Description

[0025] Figure 1 This is a perspective view of the present utility model;

[0026] Figure 2 This is a schematic diagram of the pipe arrangement of this utility model;

[0027] Figure 3 This is a representation of the pressure required for this utility model.

[0028] Figure 4 This is a schematic diagram of the worm gear of this utility model;

[0029] Figure 5 This is a schematic diagram of the spray tower of this utility model;

[0030] Figure 6 This is a cross-sectional view of the sleeve of this utility model.

[0031] In the diagram: 1. Liquid tank; 2. Fixing component; 3. Spray tower; 4. Base plate; 5. Mounting hole; 6. Fixing plate; 7. Tank body; 8. First valve; 9. Exhaust pipe; 10. Second valve; 11. Pipeline; 12. Tie rod; 13. Slide groove; 14. Sleeve; 15. Insertion hole; 16. Top rod; 17. Insert; 18. Mounting base; 19. Pressure gauge; 20. Rotating plate; 21. Worm gear; 22. Sealing plug; 23. Brake motor; 24. Worm wheel; 25. Diffuser; 26. Nozzle; 27. Connecting pipe; 28. Spring. Detailed Implementation

[0032] 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.

[0033] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0034] Combination Figures 1-4 This utility model discloses an LNG storage tank depressurization device, comprising a spray tower 3 and a tank body 7. A base plate 4 is fixedly connected to the bottom of the spray tower 3, through which the spray tower 3 is mounted. A sliding groove 13 is provided at the top of the sleeve 14, and the inner wall of the sliding groove 13 is slidably connected to a tie rod 12, allowing the tie rod 12 to slide stably. Mounting holes 5 are provided at each of the four corners of the top of the base plate 4, through which the base plate 4 is mounted. Fixing plates 6 are fixedly connected to both the front and rear ends of the bottom of the tank body 7, and the bottom of the fixing plates 6 is fixedly connected to the base plate 4, through which the tank body 7 is mounted. A first valve 8 is provided on the top of the outer wall of the exhaust pipe 9 to control whether the exhaust pipe 9 is unobstructed. A drain pipe 11 is connected through and fixedly to the bottom of the middle of the tank body 7. A second valve 10 is provided on the outer wall of the drain pipe 11 to control whether the drain pipe 11 is unobstructed. A fixing member 2 is fixedly connected to the rear end of the medicine tank 1. The other end of the fixing member 2 is fixedly connected to the spray tower 3 to install the medicine tank 1. A sealing plug 22 is connected through and threaded to the front end of the top left side of the spray tower 3 to seal the spray tower 3.

[0035] Combination Figures 4-6 A diffuser pipe 25 is fixedly connected to the bottom of the inner wall of the spray tower 3. An exhaust pipe 9 is slidably connected to the diffuser pipe 25 and the right side of the spray tower 3. Through the pores on the surface of the diffuser pipe 25, the gas can be rapidly diffused to the entire spray tower 3. A connecting pipe 27 is rotatably connected to the top center of the top of the spray tower 3. A liquid tank 1 is fixedly connected to the top of the outer wall of the connecting pipe 27. Evenly distributed nozzles 26 are provided on the top of the outer wall of the connecting pipe 27. Liquid is sprayed through the connecting pipe 27 and the nozzles 26. A worm gear 24 is fixedly connected to the top center of the outer wall of the connecting pipe 27. Rotating plates 20 are fixedly connected to the left and right sides of the top front end of the spray tower 3. A brake motor 23 is fixedly connected to the left side of the left rotating plate 20. A worm 21 is fixedly connected to the output end of the brake motor 23. The worm 21 is meshed with the worm gear 24. The brake motor 23 drives the worm 21 to rotate, which in turn drives the worm gear 24, the connecting pipe 27 and the nozzles 26 to rotate.

[0036] Combination Figure 3The tank body 7 has snap-fit ​​components at both the front and rear ends of its top. Each snap-fit ​​component includes a sleeve 14, the bottom of which is fixedly connected to the tank body 7. The sleeve 14 is installed through the tank body 7. A push rod 16 is slidably connected to the inner wall of the sleeve 14. A spring 28 is fixedly connected between one end of the push rod 16 and the sleeve 14, holding the push rod 16 in place. A pull bar 12 is fixedly connected to the top of the push rod 16, and the pull bar 12 is slidably connected to the sleeve 14. A mounting base is slidably connected through the middle of the top of the tank body 7. 18. A pressure gauge 19 is fixedly connected to the top of the mounting base 18. The pressure gauge 19 is installed through the mounting base 18. The top of the tank body 7 has two insertion holes 15 on the left and right sides. The inner wall of the insertion hole 15 is slidably connected to the plug 17. One side of the plug 17 is fixedly connected to the mounting base 18. The plug 17 and the insertion hole 15 cooperate with each other to assist the installation of the mounting base 18. The other end of the push rod 16 is slidably connected to the mounting base 18. The push rod 16 is used to limit the mounting base 18.

[0037] Working principle: When the pressure in tank 1 is too high, the first valve 1 is opened, and the excess gas will be quickly sprayed into the diffuser 25 through the exhaust pipe 90. Through the pores on the surface of the diffuser 25, the gas will quickly diffuse into the entire interior of the spray tower 3. Then, the brake motor 23 is turned on, and the output end of the brake motor 23 rotates, driving the worm gear 21 to rotate, thereby driving the worm wheel 24, the connecting pipe 27 and the nozzle 26 to rotate. The nozzle 26 sprays atomized liquid to quickly degrade the gas. After degradation, the sealing cover 22 can be opened to discharge the harmless gas, thereby maintaining balance. After the material in tank 7 is emptied, when the pressure gauge 19 needs to be inspected, the pull rod 12 can be used to drive the top rod 16 along the slide groove 13 and press the spring 28 to move. After the top rod 16 is disengaged from the mounting base 18, the pressure gauge 19 can be pulled away for inspection.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LNG storage tank depressurization device, comprising a spray tower (3) and a tank body (7), characterized in that: The bottom of the spray tower (3) is fixedly connected to a base plate (4). The bottom of the inner wall of the spray tower (3) is fixedly connected to a diffuser pipe (25). The diffuser pipe (25) and the right side of the spray tower (3) are connected to an exhaust pipe (9). The top of the spray tower (3) is rotatably connected to a connecting pipe (27). The top of the outer wall of the connecting pipe (27) is fixedly connected to a liquid tank (1). The top of the outer wall of the connecting pipe (27) is provided with evenly distributed nozzles (26). The top of the middle of the outer wall of the connecting pipe (27) is connected to a worm gear (24). The top front end of the spray tower (3) is fixedly connected to both the left and right sides of a rotating plate (20). The left side of the rotating plate (20) is fixedly connected to a brake motor (23). The output end of the brake motor (23) is fixedly connected to a worm (21). The worm (21) is meshed with the worm gear (24). The top front and rear ends of the tank (7) are provided with snap-fit ​​components.

2. The LNG storage tank depressurization device according to claim 1, characterized in that: The snap-fit ​​assembly includes a sleeve (14), the bottom of which is fixedly connected to the tank body (7). A push rod (16) is slidably connected to the inner wall of the sleeve (14). A spring (28) is fixedly connected between one end of the push rod (16) and the sleeve (14). A pull bar (12) is fixedly connected to the top of the push rod (16). The pull bar (12) is slidably connected to the sleeve (14). An installation base (18) is slidably connected through the middle of the top of the tank body (7). A pressure gauge (19) is fixedly connected to the top of the installation base (18). Insert holes (15) are provided on both the left and right sides of the middle of the top of the tank body (7). A plug (17) is slidably connected to the inner wall of the insert hole (15). One side of the plug (17) is fixedly connected to the installation base (18). The other end of the push rod (16) is slidably connected to the installation base (18).

3. The LNG storage tank depressurization device according to claim 2, characterized in that: The top of the sleeve (14) is provided with a groove (13), and the inner wall of the groove (13) is slidably connected to the pull bar (12).

4. The LNG storage tank depressurization device according to claim 1, characterized in that: Mounting holes (5) are provided at the four corners of the top of the base plate (4).

5. The LNG storage tank depressurization device according to claim 1, characterized in that: The bottom of the tank (7) is fixedly connected to both the front and rear ends of the tank body (7), and the bottom of the fixed plate (6) is fixedly connected to the bottom plate (4).

6. The LNG storage tank depressurization device according to claim 1, characterized in that: A first valve (8) is provided on the top of the outer wall of the exhaust pipe (9).

7. The LNG storage tank depressurization device according to claim 1, characterized in that: A pipe (11) is connected through and fixedly connected to the bottom middle of the tank (7), and a second valve (10) is provided on the outer wall of the pipe (11).

8. The LNG storage tank depressurization device according to claim 1, characterized in that: The rear end of the liquid tank (1) is fixedly connected to a fixing member (2), and the other end of the fixing member (2) is fixedly connected to the spray tower (3). A sealing plug (22) is threaded through and connected to the front end of the top left side of the spray tower (3).

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