Low-temperature liquid gas tank car filling device

Abstract

The utility model belongs to the technical field of filling of low-temperature liquid gas tank cars, and particularly relates to a filling device of a low-temperature liquid gas tank car. Comprising a low-temperature storage tank and a sealing gas pipeline, the discharging end of the low-temperature storage tank is sequentially communicated with a discharging valve and a filling valve through a pipeline, the filling valve is communicated with a claw connector base, a support is placed on the ground close to the claw connector base, a hook is welded to the support, the sealing gas pipeline is communicated with a sealing gas valve through a pipeline, and the sealing gas valve is communicated with a hose. The hose is communicated with a claw joint moving seat, an exhaust pipe and a hanging ring are welded on the claw joint moving seat, and the hanging ring is hung on the hook. The filling valve can be sealed, moisture in air is prevented from being condensed in the valve body, and meanwhile air cannot flow into a tank car in the filling process.

Description

Technical Field

[0001] The utility model belongs to the technical field of filling of low-temperature liquid gas tank trucks, and in particular relates to a filling device for low-temperature liquid gas tank trucks. Background Art

[0002] It is mainly used for filling export pipelines of cryogenic liquid products of air separation units supporting steel plants. The air separation units supporting steel plants use deep freezing to separate air, and the oxygen, nitrogen and argon produced are used in the metal smelting process of steel plants. Among them, the air separation unit also produces liquid oxygen, liquid nitrogen and liquid argon cryogenic liquid products. The product temperature is between -183 and -196℃, and they are stored in normal pressure powder insulated cryogenic liquid storage tanks for export to generate revenue. Since the cryogenic liquid product is in a deep frozen state, the filling valve is prone to freeze the moisture in the air at the valve core of the filling valve due to the phenomenon of metal heat conduction and cold loss. This causes freezing and blockage of valves and pipelines.

[0003] At present, the filling of cryogenic liquid gas tank trucks has the following deficiencies: after the filling is completed, the area between the pneumatic filling valve and the filling port joint is in a low temperature state. When it encounters water vapor contained in the air, it freezes and becomes blocked at the valve. This causes the valve 5 to be unable to operate, or it is not closed tightly, resulting in an inability to fill or the filling port cannot be effectively cut off. For this reason, people connect the sealed gas for isolation, but there is still a risk of gas pollution. If the valve for switching the sealed gas is not tight, the sealed gas will be filled into the cryogenic tank truck along with the liquid gas during the filling process, causing a product quality accident. Summary of the invention

[0004] The utility model aims to provide a low-temperature liquid gas tank truck filling device to solve the problems existing in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A low-temperature liquid gas tank truck filling device comprises a low-temperature storage tank and a sealed gas pipeline. The discharge end of the low-temperature storage tank is connected with a discharge valve and a filling valve in sequence through a pipeline. The filling valve is connected with a horn joint base. A bracket is placed on the ground near the horn joint base. A hook is welded on the bracket. The sealed gas pipeline is connected with a sealed gas valve through the pipeline. The sealed gas valve is connected with a hose. The hose is connected with a horn joint movable seat. The horn joint movable seat is welded with an exhaust pipe and a hanging ring. The hanging ring is hung on the hook.

[0007] Furthermore, one end of the clevis joint movable seat that is butted against the clevis joint base is open, and the other end of the clevis joint movable seat is sealed.

[0008] Furthermore, an air intake pipe is welded through the sealing end of the movable seat of the horn joint, a hose is sleeved on the air intake pipe, and the hose is connected to the movable seat of the horn joint through the air intake pipe.

[0009] Further, the exhaust pipe is welded to the sealed end of the movable seat of the horn joint and is in communication with the interior of the movable seat of the horn joint.

[0010] Further, a connecting rod is welded to the hanging ring, and the other end of the connecting rod is welded to the outer wall of the sealed end of the movable seat of the horn joint. The hanging ring is welded to the movable seat of the horn joint through the connecting rod.

[0011] Further, the filling valve is an electric control valve.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model can seal the filling valve, prevent moisture in the air from condensing inside the valve body, and at the same time prevent gas leakage during filling from entering the tank truck.

[0014] 2. After filling is completed, the movable seat of the horn joint is connected to the base of the horn joint. By welding the inlet pipe and the exhaust pipe to the movable seat of the horn joint, the sealing gas enters the pipeline from the inlet pipe to seal and protect the filling valve, and a dry positive pressure environment is formed inside the pipeline, thereby isolating the air. The excess gas is discharged from the exhaust pipe, and the temperature of the pipeline increases, preventing moisture in the air from condensing.

[0015] 3. During filling, the movable seat of the horn joint is hung on the hook through the hanging ring, preventing the movable seat of the horn joint from being contaminated.

[0016] 4. During filling, the movable seat of the horn joint is separated from the base of the horn joint, and no gas leakage phenomenon will occur. Description of the Drawings

[0017] Figure 1 is a schematic structural view of the utility model.

[0018] Figure 2 is a schematic structural view of the movable seat of the horn joint of the utility model.

[0019] Among them: 1. Low-temperature storage tank; 2. Sealing gas pipeline; 3. Pipeline; 4. Discharge valve; 5. Filling valve; 6. Base of the horn joint; 7. Bracket; 8. Hook; 9. Sealing gas valve; 10. Hose; 11. Movable seat of the horn joint; 12. Exhaust pipe; 13. Hanging ring; 14. Inlet pipe; 15. Connecting rod. Detailed Embodiments

[0020] In order to make the objectives, technical solutions and advantages of the utility model clearer, the following further describes the utility model in detail with reference to specific embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0021] AsFigure 1-2 As shown in the figure, a filling device for a cryogenic liquid gas tank truck includes a cryogenic storage tank 1 and a sealed gas pipeline 2. The discharge end of the cryogenic storage tank 1 is sequentially connected with a discharge valve 4 and a filling valve 5 through a pipeline 3. The filling valve 5 is connected with a base of a bayonet joint 6. A bracket 7 is placed on the ground near the base of the bayonet joint 6, and a hook 8 is welded on the bracket 7. The sealed gas pipeline 2 is connected with a sealed gas valve 9 through a pipeline 3. The sealed gas valve 9 is connected with a hose 10. The hose 10 is connected with a movable seat of the bayonet joint 11. An exhaust pipe 12 and a hanging ring 13 are welded on the movable seat of the bayonet joint 11. The hanging ring 13 is hung on the hook 8.

[0022] The bayonet joint is a commonly used quick joint for cryogenic liquids. It usually consists of two halves, and the names of the two halves are not unified. The half installed on the pipeline 3 is usually called a flange seat (for bayonet joints with flanges), a base, a fixed end, a female end, etc. In the present invention, it is called the base of the bayonet joint 6. The half installed on the hose 10 is often called a movable seat, a bayonet end, a movable end, a male end, etc. Its feature is that it has a bayonet-shaped fastener, which is called the movable seat of the bayonet joint 11 in the present invention.

[0023] An intake pipe 14 is welded through the sealed end of the movable seat of the bayonet joint 11. The hose 10 is sleeved on the intake pipe 14. The hose 10 is connected with the movable seat of the bayonet joint 11 through the intake pipe 14. The connection between the hose 10 and the rigid pipe usually uses tools such as clamps, which will not be elaborated here.

[0024] An intake pipe 14 is welded to the sealed end of the movable seat of the bayonet joint 11. The hose 10 is sleeved on the intake pipe 14. The hose 10 is connected with the movable seat of the bayonet joint 11 through the intake pipe 14.

[0025] The exhaust pipe 12 is welded to the sealed end of the movable seat of the bayonet joint 11 and is internally connected with the movable seat of the bayonet joint 11.

[0026] A connecting rod 15 is welded to the hanging ring 13, and the other end of the connecting rod 15 is welded to the outer wall of the sealed end of the movable seat of the bayonet joint 11. The hanging ring 13 is welded to the movable seat of the bayonet joint 11 through the connecting rod 15.

[0027] The filling valve 5 is an electrically controlled valve.

[0028] The working principle of the present invention is:

[0029] Low-temperature liquid gas tank trucks usually come with a swivel joint mobile seat 11 and a switch valve. When filling, the swivel joint mobile seat 11 is removed from the swivel joint base 6, hung on the hook 8 through the hanging ring 13, the sealed gas valve 9 is closed, the swivel joint mobile seat 11 carried by the tank truck is connected to the swivel joint base 6, the discharge valve 4 and the switch valve carried by the tank truck are opened. After the on-site personnel move away, the filling valve 5 is remotely electrically controlled to open, and liquid gas is filled into the tank truck. After filling, the filling valve 5 is remotely electrically controlled to close, the discharge valve 4 and the switch valve carried by the tank truck are closed to prevent the filling valve 5 from not closing tightly. The swivel joint mobile seat 11 carried by the tank truck is removed, attention should be paid to doing a good job in protection, and the pipe orifice should not face people, and the residual liquid in the pipe is discharged. The swivel joint mobile seat 11 connected to the sealed gas pipeline 2 is quickly removed from the hook 8 and docked on the swivel joint base 6, the sealed gas valve 9 is opened, and the sealed gas enters the pipeline 3 from the air inlet pipe 14 for sealing protection, and a dry positive pressure environment is formed in the pipeline 3, so as to isolate the air, and the excess gas is discharged from the exhaust pipe 12, and the temperature of the pipeline 3 rises, and the moisture in the air will not condense.

[0030] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various variations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope of the present invention.

[0031] The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

Claims

1. A low-temperature liquid gas tanker filling device, characterized in that: It includes a low-temperature storage tank and a sealed gas pipeline. The discharge end of the low-temperature storage tank is connected to a discharge valve and a filling valve in sequence through a pipeline. The filling valve is connected to a horn joint base. A bracket is placed on the ground near the horn joint base. A hook is welded on the bracket. The sealed gas pipeline is connected to a sealed gas valve through a pipeline. The sealed gas valve is connected to a hose. The hose is connected to a movable seat of the horn joint. The movable seat of the horn joint is welded with an exhaust pipe and a hanging ring. The hanging ring is hung on the hook.

2. The low-temperature liquid gas tanker filling device according to claim 1 is characterized in that: One end of the clevis joint movable seat that is butted against the clevis joint base is open, and the other end of the clevis joint movable seat is sealed.

3. The low-temperature liquid gas tanker filling device according to claim 2 is characterized in that: An air inlet pipe is welded through the sealing end of the horn joint movable seat, a hose is sleeved on the air inlet pipe, and the hose is connected to the horn joint movable seat through the air inlet pipe.

4. The low-temperature liquid gas tanker filling device according to claim 2, characterized in that: The exhaust pipe is welded to the sealing end of the clevis joint movable seat and is communicated with the interior of the clevis joint movable seat.

5. The low-temperature liquid gas tanker filling device according to claim 2, characterized in that: The hanging ring is welded with a connecting rod, the other end of the connecting rod is welded to the outer wall of the sealing end of the horn joint movable seat, and the hanging ring is welded to the horn joint movable seat through the connecting rod.

6. The low-temperature liquid gas tanker filling device according to claim 1, characterized in that: The filling valve is an electrically controlled valve.

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