Fixing outer cover for liquid nitrogen transportation

Abstract

The utility model relates to the technical field of outer covers of liquid nitrogen tanks, and discloses a fixed outer cover for liquid nitrogen transportation, which comprises a cover cylinder and a counterweight ring, the counterweight ring is fixed on the lower outer ring of the cover cylinder in a surrounding manner, the counterweight ring and the cover cylinder are connected into an integral structure, an annular plate is fixed on the lower outer ring of the counterweight ring in a surrounding manner, and an annular air bag is fixed on the inner surface of the cover cylinder in a surrounding manner. The three air bags are distributed at equal intervals and communicate with one another through connecting pipes, the two sides of the uppermost air bag are connected with an air inlet pipe and an air outlet pipe which communicate with the interior of the uppermost air bag correspondingly, and the air inlet pipe and the air outlet pipe both penetrate out of the upper portion of the cover cylinder. According to the technical scheme, the multiple circles of air bags are arranged in the cover cylinder, the air bags are inflated to abut against the outer ring of the nitrogen tank so that the cover cylinder can be locked on the outer ring of the nitrogen tank in a sleeved mode, the bottom of the cover cylinder and the balance weight ring abut against the surface of a compartment in a supported mode, and therefore the nitrogen tank can be stably placed and prevented from toppling over; and meanwhile, the nitrogen tank can be protected, and cold air can be released.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen tank covers, in particular to a fixed cover for liquid nitrogen transportation. Background Art

[0002] Liquid nitrogen is liquid nitrogen, which is inert, colorless, odorless, non-corrosive, non-flammable, and extremely low in temperature. Nitrogen makes up most of the atmosphere (78.03% by volume and 75.5% by weight). Nitrogen is inactive and does not support combustion. When it vaporizes, it absorbs a lot of heat and causes frostbite. Nitrogen accounts for 78% of the air. Liquid nitrogen is widely used in industry, so most liquid nitrogen is stored and transported in liquid storage bottles.

[0003] During the transfer, the liquid nitrogen tank is placed on the transport vehicle. During the movement of the vehicle, the liquid nitrogen tank is prone to tipping over, which is risky, and the outer surface of the liquid nitrogen tank is also relatively cold and needs to be protected. Therefore, we propose a fixed outer cover for liquid nitrogen transportation. Utility Model Content

[0004] The utility model aims to provide a fixed outer cover for liquid nitrogen transportation. By arranging multiple circles of air bags inside the cover tube, the cover tube can be locked on the outer circle of the nitrogen tank by inflating the air bags and pressing against the outer circle of the nitrogen tank. The bottom of the cover tube and the counterweight circle are supported on the surface of the carriage, so that the nitrogen tank can be stably placed to avoid tipping over. At the same time, the nitrogen tank can also be protected and cooled, thereby solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixed outer cover for liquid nitrogen transportation, comprising a cover barrel and a counterweight ring, wherein the counterweight ring is fixed around the lower outer ring of the cover barrel, the counterweight ring and the cover barrel are connected to form an integral structure, and a ring plate is fixed around the lower outer ring of the counterweight ring; an annular airbag is fixed around the inner surface of the cover barrel, three airbags are provided and equidistantly distributed, the airbags are interconnected by connecting pipes, and both sides of the uppermost airbag are connected to an intake pipe and an exhaust pipe connected to the interior thereof, and both the intake pipe and the exhaust pipe pass through the upper exterior of the cover barrel.

[0006] By adopting the above technical solution, the cover tube is firstly put on the outer ring of the nitrogen tank, and then the airbag is inflated to make it press against the outer surface of the nitrogen tank. The bottom of the cover tube and the counterweight ring are supported on the surface of the car body, so that the nitrogen tank is stabilized to prevent tipping over and has a protective effect.

[0007] Optionally, a handle is fixed on the top surface of the cover cylinder, and the handle is fixed at a middle position of the top of the cover cylinder.

[0008] By adopting the above technical solution, when taking the cover tube, the cover tube can be held by the handle.

[0009] Optionally, a rubber sleeve is fixedly sleeved on the outer ring of the handle, and the inner ring of the rubber sleeve is pressed tightly against the outer surface of the handle.

[0010] By adopting the above technical solution, the rubber sleeve can be used to hold the outer ring of the handle more comfortably.

[0011] Optionally, a one-way valve is installed on the air intake pipe, and the one-way valve is connected downward.

[0012] By adopting the above technical solution, air can be injected into the airbag in only one direction at the air intake pipe, and there is no need to additionally provide a valve body structure that requires manual operation at the air intake pipe.

[0013] Optionally, a valve is installed on the exhaust pipe, and the valve is connected to the exhaust pipe.

[0014] By adopting the above technical solution, when exhaust is required, the valve is opened to exhaust the gas inside the airbag.

[0015] Optionally, a rubber pad is fixed around the bottom surface of the cover tube and the counterweight ring, and the rubber pad is fixed to the bottom surface of the cover tube and the counterweight ring by fitting.

[0016] By adopting the above technical solution, the cover tube and the counterweight ring can be placed stably and anti-swaying when supported on an uneven car body surface.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The technical solution of the present application is to arrange multiple circles of air bags inside the cover tube, and the air bags can be inflated to press against the outer circle of the nitrogen tank to lock the cover tube on the outer circle of the nitrogen tank. The bottom of the cover tube and the counterweight ring are supported on the surface of the car body, so that the nitrogen tank can be stably placed to avoid tipping over. At the same time, it can also protect the nitrogen tank and release the cold air.

[0019] 2. The technical solution of the present application enables the airbags to be interconnected, so that all the airbags can be inflated or deflated at the same time, and the ring plate arranged around the outer ring of the counterweight ring can increase the support area and ensure stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the fixed outer cover for liquid nitrogen transportation of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a fixed outer cover for liquid nitrogen transportation according to the utility model.

[0023] In the figure: 1, cover tube; 11, handle; 111, rubber sleeve; 2, counterweight ring; 21, ring plate; 22, rubber pad; 3, air bag; 31, connecting pipe; 32, air inlet pipe; 321, one-way valve; 33, exhaust pipe; 331, valve. DETAILED DESCRIPTION

[0024] See also Figure 1-2 The utility model provides a technical solution: a fixed outer cover for liquid nitrogen transportation, comprising a cover barrel 1 and a counterweight ring 2, the counterweight ring 2 is fixed around the lower outer ring of the cover barrel 1, the counterweight ring 2 and the cover barrel 1 are connected to form an integral structure, a handle 11 is fixed on the top surface of the cover barrel 1, the handle 11 is fixed at the middle position of the top of the cover barrel 1, and a rubber sleeve 111 is fixed on the outer ring of the handle 11, the inner ring of the rubber sleeve 111 is tightly pressed against the outer surface of the handle 11, and the rubber sleeve 111 can be comfortably gripped on the outer ring of the handle 11 to lift and hold the cover barrel 1.

[0025] An annular airbag 3 is fixed around the inner surface of the cover tube 1. The airbag 3 is tightly attached to the inner wall surface of the cover tube 1. Three airbags 3 are arranged and equidistantly distributed. The airbags 3 are connected to each other through connecting pipes 31. The left side of the top airbag 3 is connected with an air intake pipe 32. The air intake pipe 32 is connected to the inside of the airbag 3 and passes through the upper outside of the cover tube 1. When the cover tube 1 is put on the outer ring of the nitrogen tank, the nitrogen tank is placed on the inner ring of the airbag 3, so that the air pump is connected to the air intake pipe 32, so that the airbag 3 is inflated through the air intake pipe 32 to expand it, and then it is tightly locked to the outer surface of the nitrogen tank. A one-way valve 321 is installed on the air intake pipe 32, and the one-way valve 321 is conducted downward. After the inflation is completed, the internal gas of the airbag 3 can be prevented from being discharged through the air intake pipe 32.

[0026] An exhaust pipe 33 is connected to the right side of the top airbag 3. The exhaust pipe 33 is connected to the inside of the airbag 3 and passes through to the upper outside of the cover tube 1. A valve 331 is installed on the exhaust pipe 33. The valve 331 is connected to the inside of the exhaust pipe 33. When the cover tube 1 needs to be removed, the valve 331 is opened to allow the internal gas of the airbag 3 to be discharged and contracted from the exhaust pipe 33. The airbag 3 no longer contacts the outer surface of the nitrogen tank, and the cover tube 1 can be removed.

[0027] When the cover cylinder 1 is placed, the counterweight ring 2 at the bottom is supported on the surface of the car together with the cover cylinder 1, so that the cover cylinder 1 can be placed stably, and the nitrogen tank locked inside it can also be placed stably to prevent tipping. In addition, a ring plate 21 is fixed around the lower outer ring of the counterweight ring 2. The ring plate 21 can increase the support area and make the support placement more stable. A rubber pad 22 is fixed around the bottom surface of the cover cylinder 1 and the counterweight ring 2. The rubber pad 22 is fixed to the bottom surface of the cover cylinder 1 and the counterweight ring 2 by fitting. When placed on an uneven car surface, it can prevent shaking during placement.

[0028] When in use, the cover tube 1 is held by the handle 11 and is put on the outer ring of the nitrogen tank placed in the transport vehicle, and the bottom of the cover tube 1 and the bottom of the counterweight ring 2 are supported on the surface of the car body through the rubber pad 22, and then the air pump is connected to the air intake pipe 32, and the air pump is started to inflate the three annular air bags 3 to make them expand. After the air bags 3 are expanded, they are pressed against the outer surface of the nitrogen tank and locked. Then the connection with the air pump is disconnected and the air pump is turned off. Under the action of the air bags 3, the nitrogen tank is locked inside the cover tube 1, and the cover tube 1 is stably supported on the ground when the counterweight is used. With the large-area support of the ring plate 21, the support is more stable, which prevents the nitrogen tank from tipping over, protects the nitrogen tank and reduces the influence of cold air on its outer surface. When the cover tube 1 needs to be removed, the valve 331 is first opened to release the gas in the air bags 3 and shrink them. Then the cover tube 1 can be taken away by holding it again by the handle 11.

Claims

1. A fixed outer cover for liquid nitrogen transportation, comprising a cover cylinder (1) and a counterweight ring (2), characterized in that: The counterweight ring (2) is fixed around the lower outer ring of the cover tube (1), the counterweight ring (2) and the cover tube (1) are connected to form an integral structure, and a ring plate (21) is fixed around the lower outer ring of the counterweight ring (2); An annular airbag (3) is fixedly disposed around the inner surface of the cover tube (1); three airbags (3) are provided and are equidistantly distributed; the airbags (3) are interconnected via connecting pipes (31); both sides of the uppermost airbag (3) are respectively connected to an air intake pipe (32) and an exhaust pipe (33) that are in communication with the interior thereof; the air intake pipe (32) and the exhaust pipe (33) both penetrate to the upper exterior of the cover tube (1).

2. A fixed outer cover for liquid nitrogen transportation according to claim 1, characterized in that: A handle (11) is fixed on the top surface of the cover cylinder (1), and the handle (11) is fixed at the middle position of the top of the cover cylinder (1).

3. A fixed outer cover for liquid nitrogen transportation according to claim 2, characterized in that: The outer ring of the handle (11) is sleeved and fixed with a rubber sleeve (111), and the inner ring of the rubber sleeve (111) is tightly pressed against the outer surface of the handle (11).

4. A fixed outer cover for liquid nitrogen transportation according to claim 1, characterized in that: A one-way valve (321) is installed on the air inlet pipe (32), and the one-way valve (321) is connected downward.

5. The fixed outer cover for liquid nitrogen transportation according to claim 1, characterized in that: A valve (331) is installed on the exhaust pipe (33), and the valve (331) is communicated with the exhaust pipe (33).

6. A fixed outer cover for liquid nitrogen transportation according to claim 1, characterized in that: A rubber pad (22) is fixed around the bottom surfaces of the cover tube (1) and the counterweight ring (2); the rubber pad (22) is fixed to the bottom surfaces of the cover tube (1) and the counterweight ring (2) by fitting.

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