Natural gas storage tank transportation leak-proof detection device

Abstract

The utility model discloses a natural gas storage tank transportation leak-proof detection device which comprises a weighing frame, a storage tank is fixedly connected above the weighing frame, two groups of connecting shafts are fixedly connected below the weighing frame, two sides of each group of connecting shafts are rotatably connected with rolling shaft sleeves, one side of each rolling shaft sleeve is fixedly connected with a wheel, and the other side of each rolling shaft sleeve is fixedly connected with a motor. And the lower part of the weighing frame is rotatably connected with a rotating shaft. The utility model relates to the technical field of storage tank transportation leak-proof detection devices. According to the natural gas storage tank transportation leak-proof detection device, through mutual cooperation of a rotating disc and a piston head, uniform spraying cooling can be continuously conducted on a water tank without a water pump in the movement process of a weighing frame, through mutual cooperation of a sliding sleeve and a two-way threaded rod, cotton cloth can cover the outer wall of the storage tank, and the detection efficiency is improved. The storage tank can be prevented from being directly exposed to the sun to cause adverse effects, the device can be matched with a spraying pipe to block a leakage point, and the leakage condition can be detected more conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-leakage detection devices for storage tank transportation, in particular to an anti-leakage detection device for natural gas storage tank transportation. Background Art

[0002] LNG is the abbreviation of liquefied natural gas. Liquefied natural gas transport vehicles are referred to as LNG transport vehicles. After LNG is transported from the gas source to the LNG gas supply station in the gas-using city by road tank trucks or tank container trucks, the tank truck storage tank is pressurized to 0.6MPa by the air-temperature booster gasifier on the tank truck (or the tank container truck is pressurized by the unloading booster gasifier set in the station). At the same time, the tank pressure is reduced to about 0.4MPa, so that a pressure difference of about 0.2MPa is formed between the tank truck and the LNG storage tank, and the LNG in the tank truck is unloaded into the gas supply station tank by using this pressure difference. At the end of unloading, the natural gas in the tank truck is recovered through the gas phase pipeline of the unloading platform. During the transportation of liquefied natural gas transport vehicles, a leak detection device is required. However, the existing natural gas storage tank transportation leak detection device still has some shortcomings, such as being unable to prevent the storage tank from being exposed to direct sunlight during transportation, and for example, when natural gas leaks, it is impossible to detect and plug the leak in time. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a natural gas storage tank transportation anti-leakage detection device, which solves the problem of the storage tank transportation anti-leakage detection device.

[0004] To achieve the above objectives, the utility model is implemented through the following technical solutions: a natural gas storage tank transportation anti-leakage detection device, including a weighing frame, a storage tank is fixedly connected to the top of the weighing frame, two groups of connecting shafts are fixedly connected to the bottom of the weighing frame, both sides of each group of connecting shafts are rotatably connected to rolling sleeves, one side of the rolling sleeves is fixedly connected to a wheel, a rotating shaft is rotatably connected to the bottom of the weighing frame, a V-belt is rotatably connected between the rotating shaft and the rolling sleeve, a turntable is fixedly connected to one end of the rotating shaft, a fixed beam is fixedly connected to the top of the weighing frame, a bidirectional threaded rod is rotatably connected to the bottom of the fixed beam, and two groups of sliding sleeves are rotatably connected to the outer wall of the bidirectional threaded rod.

[0005] Preferably, a water tank is fixedly connected to the bottom of the weighing frame, one end of the water tank is fixedly connected to a piston cylinder, the interior of the piston cylinder is slidably connected to a piston head, the interior of the water tank is fixedly connected to a first telescopic spring, the other end of the first telescopic spring is fixedly connected to a first baffle, and the first baffle is arranged at one end of the piston cylinder.

[0006] Preferably, the other end of the rotating shaft is fixedly connected to a turntable, one end of the turntable is rotatably connected to a connecting rod, the other end of the connecting rod is rotatably connected to one side of the piston head, a second telescopic spring is fixed inside one end of the piston head, the other end of the second telescopic spring is fixedly connected to a second baffle, two groups of air inlets are opened inside the piston head, and the second baffle is arranged on one side of the air inlet.

[0007] Preferably, one end of the water tank is fixedly connected to a solenoid valve, one end of the solenoid valve is fixedly connected to a water pipe, and a plurality of groups of spray pipes are fixedly connected below the fixed beam.

[0008] Preferably, the water pipe passes through the fixed beam and is connected to the spray pipe, a central fixed block is fixedly connected to the middle of the storage tank, cotton cloth is fixedly connected to both sides of the central fixed block, and the other end of each group of cotton cloth is fixedly connected to one end of the sliding sleeve.

[0009] Preferably, a waterproof motor is fixedly connected below one end of the fixed beam, one end of the waterproof motor is fixedly connected to one end of the bidirectional threaded rod, and a pressure relief valve is provided at one end of the water tank.

[0010] Beneficial Effects

[0011] The utility model provides a natural gas storage tank transportation anti-leakage detection device. Compared with the prior art, it has the following beneficial effects:

[0012] 1. The natural gas storage tank transportation anti-leakage detection device, through the cooperation of the turntable and the piston head, realizes the continuous water tank movement during the weighing frame movement, and can evenly spray and cool the storage tank without using a water pump.

[0013] 2. The natural gas storage tank transportation anti-leakage detection device can cover the outer wall of the storage tank with cotton cloth through the cooperation of the sliding sleeve and the two-way threaded rod to prevent the storage tank from being adversely affected by direct sunlight. It can also cooperate with the spray pipe to block the leakage point, which can more conveniently detect the leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a side view structural schematic diagram of the structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the cutaway structure of the utility model;

[0017] Figure 4 The utility model structure Figure 3 Schematic diagram of point A.

[0018] In the figure: 1. weighing frame; 2. storage tank; 3. wheels; 4. connecting shaft; 5. rolling bushing; 6. V-belt; 7. rotating shaft; 8. pressure relief valve; 9. solenoid valve; 10. water tank; 11. fixed beam; 12. water pipe; 13. spray pipe; 14. waterproof motor; 15. cotton cloth; 16. sliding sleeve; 17. two-way threaded rod; 18. first telescopic spring; 19. first baffle; 20. piston cylinder; 21. second baffle; 22. second telescopic spring; 23. piston head; 24. connecting rod; 25. turntable; 26. air inlet; 27. center fixing block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model provides a technical solution: a natural gas storage tank transportation leakage detection device, including a weighing frame 1, a storage tank 2 is fixedly connected to the top of the weighing frame 1, two groups of connecting shafts 4 are fixedly connected to the bottom of the weighing frame 1, both sides of each group of connecting shafts 4 are rotatably connected to rolling sleeves 5, one side of the rolling sleeve 5 is fixedly connected to a wheel 3, a rotating shaft 7 is rotatably connected to the bottom of the weighing frame 1, a V-belt 6 is rotatably connected between the rotating shaft 7 and the rolling sleeve 5, one end of the rotating shaft 7 is fixedly connected to a turntable 25, a fixed beam 11 is fixedly connected to the top of the weighing frame 1, a bidirectional threaded rod 17 is rotatably connected to the bottom of the fixed beam 11, and two groups of sliding sleeves 16 are rotatably connected to the outer wall of the bidirectional threaded rod 17.

[0022] A water tank 10 is fixedly connected to the bottom of the weighing frame 1, one end of the water tank 10 is fixedly connected to a piston cylinder 20, the interior of the piston cylinder 20 is slidably connected to a piston head 23, the interior of the water tank 10 is fixedly connected to a first telescopic spring 18, the other end of the first telescopic spring 18 is fixedly connected to a first baffle 19, and the first baffle 19 is arranged at one end of the piston cylinder 20.

[0023] The other end of the rotating shaft 7 is fixedly connected to a turntable 25, one end of the turntable 25 is rotatably connected to a connecting rod 24, the other end of the connecting rod 24 is rotatably connected to one side of a piston head 23, a second telescopic spring 22 is fixed inside one end of the piston head 23, the other end of the second telescopic spring 22 is fixedly connected to a second baffle 21, two groups of air inlets 26 are opened inside the piston head 23, and the second baffle 21 is arranged on one side of the air inlet 26.

[0024] Based on the working principle of the natural gas storage tank transportation anti-leakage detection device of the first embodiment, when the weighing frame 1 is moving, the wheel 3 can drive the rolling sleeve 5 to rotate, and when the rolling sleeve 5 rotates, it drives the V-belt 6 to make the rotating shaft 7 connected to the bottom of the weighing frame 1 rotate along with it, and when the rotating shaft 7 rotates, it can drive the turntable 25 to rotate, and the rotation of the turntable 25 can make the connecting rod 24 to make a circular motion, and during the movement, it drives the piston head 23 to slide inside the piston cylinder 20, and when the piston head 23 moves into the inside of the piston cylinder 20, the air pressure inside the piston cylinder 20 presses against the first baffle 19, The first baffle 19 pulls the first telescopic spring 18 to move toward the inside of the water tank 10. At this time, the air inside the piston cylinder 20 can enter the inside of the water tank 10. When the piston head 23 moves toward the outside of the piston cylinder 20, the first baffle 19 returns to its original position under the action of the first telescopic spring 18. The air pressure inside the piston cylinder 20 is lower than the external air pressure. The external gas will push open the second baffle 21 at the air inlet 26 and enter the inside of the piston cylinder 20 to prepare for the next pressurization. When you want to spray and cool the storage tank 2, start the solenoid valve 9, and water will enter the inside of the spray pipe 13 from the water pipe 12 and then be evenly sprinkled.

[0025] Embodiment 2

[0026] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The utility model proposes a natural gas storage tank transportation anti-leakage detection device. Compared with the first embodiment, this embodiment also includes: one end of the water tank 10 is fixedly connected to the solenoid valve 9, one end of the solenoid valve 9 is fixedly connected to the water pipe 12, and a plurality of groups of spray pipes 13 are fixedly connected below the fixed beam 11.

[0027] The water pipe 12 passes through the fixed beam 11 and is connected to the spray pipe 13. A central fixed block 27 is fixedly connected to the middle of the storage tank 2. Cotton cloth 15 is fixedly connected to both sides of the central fixed block 27. The other end of each group of cotton cloth 15 is fixedly connected to one end of the sliding sleeve 16.

[0028] A waterproof motor 14 is fixedly connected below one end of the fixed beam 11 , one end of the waterproof motor 14 is fixedly connected to one end of a bidirectional threaded rod 17 , and a pressure relief valve 8 is provided at one end of the water tank 10 .

[0029] The working principle of the natural gas storage tank transportation anti-leakage detection device based on the second embodiment is: when the storage tank 2 needs to be protected from the sun, the waterproof motor 14 is started, and the rotation of the waterproof motor 14 drives the bidirectional threaded rod 17 to rotate, so that the cotton cloth 15 on the outer wall of the bidirectional threaded rod 17 can be moved inward or outward at the same time, and when the sliding sleeve 16 moves, it unfolds the cotton cloth 15, so that the cotton cloth 15 can cover the outer wall of the storage tank 2. An air pressure detection device is arranged inside the storage tank 2. When it is found that the air pressure of the storage tank 2 is reduced, the solenoid valve 9 is started, and the water flow will be transmitted to the inside of the spray pipe 13 through the water pipe 12 for spraying, and then the cotton cloth 15 will be soaked under the spraying of the spray pipe 13. Since the storage tank 2 contains liquefied natural gas, which is usually around minus 162 degrees Celsius, the natural gas coming out from the leakage point will first exchange heat with the wet cotton cloth 15, and then the cotton cloth 15 will freeze to block the leakage point to prevent it from continuing to leak, so that the leakage point can be observed more clearly, which is more convenient for subsequent maintenance.

[0030] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A natural gas storage tank transportation anti-leakage detection device, comprising a weighing frame (1), characterized in that: The top of the weighing frame (1) is fixedly connected to a storage tank (2); the bottom of the weighing frame (1) is fixedly connected to two groups of connecting shafts (4); both sides of each group of connecting shafts (4) are rotatably connected to rolling sleeves (5); one side of the rolling sleeve (5) is fixedly connected to a wheel (3); the bottom of the weighing frame (1) is rotatably connected to a rotating shaft (7); a V-belt (6) is rotatably connected between the rotating shaft (7) and the rolling sleeve (5); one end of the rotating shaft (7) is fixedly connected to a turntable (25); the top of the weighing frame (1) is fixedly connected to a fixed beam (11); the bottom of the fixed beam (11) is rotatably connected to a bidirectional threaded rod (17); the outer wall of the bidirectional threaded rod (17) is rotatably connected to two groups of sliding sleeves (16).

2. A natural gas storage tank transportation anti-leakage detection device according to claim 1, characterized in that: A water tank (10) is fixedly connected below the weighing frame (1), one end of the water tank (10) is fixedly connected to a piston cylinder (20), the interior of the piston cylinder (20) is slidably connected to a piston head (23), the interior of the water tank (10) is fixedly connected to a first telescopic spring (18), the other end of the first telescopic spring (18) is fixedly connected to a first baffle (19), and the first baffle (19) is arranged at one end of the piston cylinder (20).

3. A natural gas storage tank transportation anti-leakage detection device according to claim 2, characterized in that: The other end of the rotating shaft (7) is fixedly connected to a rotating disk (25), one end of the rotating disk (25) is rotatably connected to a connecting rod (24), the other end of the connecting rod (24) is rotatably connected to one side of a piston head (23), a second telescopic spring (22) is fixed inside one end of the piston head (23), the other end of the second telescopic spring (22) is fixedly connected to a second baffle (21), two groups of air inlets (26) are provided inside the piston head (23), and the second baffle (21) is arranged on one side of the air inlet (26).

4. A natural gas storage tank transportation anti-leakage detection device according to claim 3, characterized in that: One end of the water tank (10) is fixedly connected to a solenoid valve (9), one end of the solenoid valve (9) is fixedly connected to a water pipe (12), and a plurality of groups of spray pipes (13) are fixedly connected below the fixed beam (11).

5. A natural gas storage tank transportation anti-leakage detection device according to claim 4, characterized in that: The water pipe (12) passes through the fixed beam (11) and is connected to the spray pipe (13); a central fixed block (27) is fixedly connected to the middle of the storage tank (2); cotton cloth (15) is fixedly connected to both sides of the central fixed block (27); and the other end of each group of cotton cloth (15) is fixedly connected to one end of the sliding sleeve (16).

6. A natural gas storage tank transportation anti-leakage detection device according to claim 5, characterized in that: A waterproof motor (14) is fixedly connected below one end of the fixed beam (11), one end of the waterproof motor (14) is fixedly connected to one end of a bidirectional threaded rod (17), and a pressure relief valve (8) is provided at one end of the water tank (10).

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