Cryogenic vacuum insulation type detachable gas-liquid separator

Abstract

The utility model discloses a cryogenic vacuum insulation type detachable gas-liquid separator, belongs to the technical field of cryogenic liquid pipeline transportation, and solves the technical problems that in the prior art, flow loss is serious due to large gas resistance in cryogenic liquid transportation, liquid at a liquid outlet of equipment is little, gas at the liquid outlet of the equipment is much, and the gas-liquid separator cannot work. A separator body is installed in the valve box body, one end of a liquid inlet pipe and one end of a liquid outlet pipe are connected to the side wall of the separator body, the other end of the liquid inlet pipe and the other end of the liquid outlet pipe penetrate through the outer wall of the valve box body and are fixedly installed on the valve box body, and a filter screen cylinder is installed in the separator body. A buoyancy device is installed in the filter screen cylinder, one end of an exhaust mechanism is installed in the buoyancy device, and the other end of the exhaust mechanism upwards extends out of the separator body and the valve box body to be connected to the upper portion of the valve box body. The utility model is used for separating the gas resistance gas in the pipeline transportation of cryogenic liquid.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep-cold liquid pipeline transportation and is a deep-cold vacuum insulation type detachable gas-liquid separator. Background Art

[0002] Liquefied gases with a boiling point below 120K are usually called cryogenic liquids. They can be liquid nitrogen or liquid argon, hydrogen, helium, neon, methane and carbon monoxide, etc.

[0003] In the prior art, in the transportation of cryogenic liquids, the separator cannot achieve the purpose of vacuum insulation, so ice and frost are prone to occur. In the pipeline transportation of cryogenic liquid media, since the boiling point is much lower than the normal temperature, these gases often cause gas blockage in the transportation pipeline, affecting the normal flow of the pipeline. Utility Model Content

[0004] The purpose of the utility model is to:

[0005] In order to solve the technical problems in the prior art that in the transportation of cryogenic liquids, large gas resistance causes serious flow loss, and the equipment cannot work due to less liquid and more gas at the liquid outlet, a cryogenic vacuum insulated detachable gas-liquid separator is proposed.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A deep-cold vacuum insulated detachable gas-liquid separator comprises a valve box body, a separator body is installed in the valve box body, one end of a liquid inlet pipe and a liquid outlet pipe are respectively connected to the side walls of the separator body, the other ends of the liquid inlet pipe and the liquid outlet pipe respectively pass through the outer wall of the valve box body and are fixedly installed on the valve box body, a filter screen cylinder is installed in the separator body, a buoyancy device is installed in the filter screen cylinder, one end of an exhaust mechanism is installed in the buoyancy device, and the other end of the exhaust mechanism extends upward from the separator body and the valve box body to be connected above the valve box body.

[0008] Furthermore, the exhaust mechanism includes an exhaust pipe with one air inlet end installed inside the filter screen cylinder, a separator cover is connected between the exhaust pipe and the filter screen cylinder, the other air outlet end of the exhaust pipe is arranged outside the valve box body, and an air valve is also installed on the exhaust pipe.

[0009] Furthermore, the top of the filter screen cylinder and the separator cover are fixed to the top surface of the valve box body by bolts, and the top of the filter screen cylinder is also connected to an air pipe fixing cylinder covered on the outside of the exhaust pipe, and an air pipe fixing mechanism is connected between the inner wall of the air pipe fixing cylinder and the exhaust pipe.

[0010] Furthermore, anti-radiation composite paper is respectively provided on the inner walls of the exhaust pipe and the air valve.

[0011] Furthermore, the main body is provided with a vacuum nozzle for vacuum maintenance, and the liquid inlet pipe, the liquid outlet pipe and the valve box main body are respectively connected with a liquid pipe fixing cylinder, and the inner wall of the liquid pipe fixing cylinder is respectively connected with a liquid inlet pipe and the liquid outlet pipe.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] 1. The cryogenic vacuum insulated detachable gas-liquid separator of the utility model can remove the gas blocking gas in the pipeline and ensure that the pipeline separator does not freeze or frost, which will not cause greater vaporization of the cryogenic liquid. It is easy to disassemble, convenient for maintenance and cleaning, and convenient for re-vacuuming and maintenance on site. It does not require power control and is very suitable for harsh working conditions such as the wilderness where there is a lack of power.

[0014] 2. The vacuum interlayer of the product of the utility model adopts vacuuming to isolate convection heat transfer, and covers the inner pipe and valve accessories with multiple layers of anti-radiation composite paper to block radiation heat transfer, and adopts low thermal conductivity and flame retardant non-metallic support to reduce conduction heat transfer; all three types of thermal conduction are reduced to the minimum value, achieving the requirement that the outer tube and outer cylinder of the product are kept consistent with the ambient temperature.

[0015] 3. The vacuum insulation product of the utility model has a compact layout, reasonable process, and can adjust or replace various valves according to the process required by the user.

[0016] 4. The vacuum insulation product of the utility model is small in size and has the advantages of being easy to transport, easy to disassemble, and can be operated centrally and is convenient and fast.

[0017] 5. The product of the utility model adopts a vacuum insulation structure. When conveying cryogenic liquid, the valve box surface is free of ice and frost, water droplets and water mist, which guarantees the minimum cooling loss of the conveyed liquid to the greatest extent and avoids the gasification waste of the cryogenic liquid caused by conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an assembly structure diagram of the gas-liquid separator of the utility model;

[0019] Figure 2 This is an exploded diagram of the enterprise separator structure of the utility model.

[0020] Markings in the figure: 1-valve box body, 2-separator body, 3-liquid inlet pipe, 4-liquid outlet pipe, 5-filter mesh cylinder, 6-exhaust mechanism, 7-buoyancy device, 8-exhaust pipe, 9-air valve, 10-air pipe fixing cylinder, 11-air pipe fixing mechanism, 12-vacuum nozzle, 13-liquid pipe fixing cylinder, 14-liquid pipe fixing mechanism, 15-separator cover. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] A cryogenic vacuum insulated detachable gas-liquid separator comprises a valve box body 1, a separator body 2 is installed in the valve box body 1, the side walls of the separator body 2 are respectively connected to one end of a liquid inlet pipe 3 and a liquid outlet pipe 4, the other ends of the liquid inlet pipe 3 and the liquid outlet pipe 4 respectively pass through the outer wall of the valve box body 1 and are fixedly installed on the valve box body 1, a filter screen cylinder 5 is installed in the separator body 2, a buoyancy device 7 is installed in the filter screen cylinder 5, one end of an exhaust mechanism 6 is installed in the buoyancy device 7, and the other end of the exhaust mechanism 6 extends upward from the separator body 2 and the valve box body 1 to be connected above the valve box body 1.

[0023] Furthermore, the exhaust mechanism 6 includes an exhaust pipe 8 with one air inlet end installed inside the filter screen cylinder 5, a separator cover 15 is connected between the exhaust pipe 8 and the filter screen cylinder 5, and the other air outlet end of the exhaust pipe 8 is arranged outside the valve box body 1, and an air valve 9 is also installed on the exhaust pipe 8.

[0024] Furthermore, the top end of the filter mesh cylinder 5 and the separator cover 15 are fixed to the top surface of the valve box body 1 by bolts, and the top end of the filter mesh cylinder 5 is also connected to an air pipe fixing cylinder 10 covered on the outside of the exhaust pipe 8, and an air pipe fixing mechanism 11 is connected between the inner wall of the air pipe fixing cylinder 10 and the exhaust pipe 8.

[0025] Anti-radiation composite paper is provided on the inner walls of the exhaust pipe 8 and the air valve 9 respectively.

[0026] The main body is provided with a vacuum nozzle 12 for vacuum maintenance, and a liquid pipe fixing cylinder 13 is respectively connected between the liquid inlet pipe 3 and the liquid outlet pipe 4 and the valve box main body 1, and a liquid pipe fixing mechanism 14 is respectively connected between the inner wall of the liquid pipe fixing cylinder 13 and the liquid inlet pipe 3 and the liquid outlet pipe 4.

[0027] The separator has the following features:

[0028] 1) Suitable for gas discharge after various low-temperature and deep-cold liquids reach boiling point;

[0029] 2) Self-powered, automatic exhaust can be achieved without power supply;

[0030] 3) The vacuum insulation structure is adopted. When transporting cryogenic liquids, there is no ice or frost on the surface, no water droplets or water mist, which maximizes the minimum cold loss of the transported medium and avoids the gasification waste of cryogenic liquids caused by transportation.

[0031] 4) Disassembled structure for easy maintenance and replacement of parts;

[0032] 5) The pressure-resistant buoy structure solves the problem of the buoyancy structure being vulnerable when the pipeline pressure is above 0.6MPa;

[0033] 6) The whole structure is made of 304 stainless steel, which is corrosion-resistant, has low cold loss and is not easy to be damaged.

[0034] The separator working process of the utility model is as follows:

[0035] Before using the separator, a vacuum is drawn between the valve box body 1 and the separator body 2. When in use, the cryogenic liquid is discharged into the separator body 2 through the liquid inlet pipe 3, and the gas vaporized from the cryogenic liquid enters the interior through the filter mesh tube 5 and rises to the top. When the air valve 9 of the exhaust pipe 8 opens the passage, the gas is discharged from the exhaust pipe 8, and the liquid below is discharged from the liquid outlet pipe 4 on the other side, thereby realizing gas-liquid separation of the cryogenic liquid. The vacuum interlayer of the separator uses vacuum to isolate convective heat transfer, and covers the inner pipe and valve fittings with multiple layers of anti-radiation composite paper to block radiation heat transfer, and uses low thermal conductivity and flame-retardant non-metallic supports to reduce conduction heat transfer. All three types of thermal conductivities are reduced to the minimum value, achieving the requirement that the outer pipe and outer cylinder of the product remain consistent with the ambient temperature, greatly reducing cold loss.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A deep-cold vacuum insulated detachable gas-liquid separator, characterized in that: The invention comprises a valve box body (1), wherein a separator body (2) is installed in the valve box body (1), and one end of a liquid inlet pipe (3) and a liquid outlet pipe (4) are respectively connected to the side wall of the separator body (2), and the other ends of the liquid inlet pipe (3) and the liquid outlet pipe (4) respectively pass through the outer wall of the valve box body (1) and are fixedly installed on the valve box body (1), and a filter screen cylinder (5) is installed in the separator body (2), and a buoyancy device (7) is installed in the filter screen cylinder (5), and one end of an exhaust mechanism (6) is installed in the buoyancy device (7), and the other end of the exhaust mechanism (6) extends upward from the separator body (2) and the valve box body (1) to be connected above the valve box body (1).

2. A cryogenic vacuum insulated detachable gas-liquid separator according to claim 1, characterized in that: The exhaust mechanism (6) comprises an exhaust pipe (8) whose air inlet end is installed inside the filter screen cylinder (5), a separator cover (15) is connected between the exhaust pipe (8) and the filter screen cylinder (5), and the other end of the exhaust pipe (8) for air outlet is arranged outside the valve box body (1), and an air valve (9) is also installed on the exhaust pipe (8).

3. A cryogenic vacuum insulated detachable gas-liquid separator according to claim 2, characterized in that: The top end of the filter screen cylinder (5) and the separator cover (15) are fixedly mounted on the top surface of the valve box body (1) by means of bolts. The top end of the filter screen cylinder (5) is also connected to an air pipe fixing cylinder (10) which is arranged outside the exhaust pipe (8). An air pipe fixing mechanism (11) is connected between the inner wall of the air pipe fixing cylinder (10) and the exhaust pipe (8).

4. A cryogenic vacuum insulated detachable gas-liquid separator according to claim 2, characterized in that: Anti-radiation composite paper is respectively provided on the inner walls of the exhaust pipe (8) and the air valve (9).

5. The cryogenic vacuum insulation type detachable gas-liquid separator according to claim 1, characterized in that: The main body is provided with a vacuum nozzle (12) for vacuum maintenance, and a liquid pipe fixing cylinder (13) is respectively connected between the liquid inlet pipe (3) and the liquid outlet pipe (4) and the valve box main body (1), and a liquid pipe fixing mechanism (14) is respectively connected between the inner wall of the liquid pipe fixing cylinder (13) and the liquid inlet pipe (3) and the liquid outlet pipe (4).

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