Vacuum heat insulation device for discharging cryogenic gas at normal temperature

Abstract

The utility model discloses a vacuum heat insulation device for discharging cryogenic gas at normal temperature, which belongs to the technical field of cryogenic liquid pipeline transportation, solves the technical problem that a large amount of gas formed in the cryogenic liquid transportation process cannot be directly discharged or recycled due to supercooling, and comprises an outer shell, an inner shell is arranged in the outer shell, and an outer shell is arranged in the inner shell. A heater is installed in the inner shell, one end of a vacuum heat insulation connector is connected to the inner shell, the other end of the vacuum heat insulation connector penetrates through the outer shell to be communicated with the outside, an air inlet is formed in the end, located outside the outer shell, of the vacuum heat insulation connector, and an exhaust port is further formed in the top of the inner shell and communicated with the outside of the outer shell. The device is used for discharging the gas vaporized by the cryogenic gas at normal temperature.

Description

Technical Field

[0001] The utility model belongs to the technical field of cryogenic liquid pipeline transportation, and in particular relates to a vacuum insulation device used for discharging cryogenic gas at room temperature. 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. These cryogenic liquids are affected by the ambient temperature and form cryogenic gases after vaporization. These gases in pipes or containers will affect the physical properties of liquids such as flow, so they need to be discharged from pipes or containers. Direct discharge of cryogenic gases into the air or direct collection and utilization may cause safety problems. Utility Model Content

[0003] The purpose of the utility model is to:

[0004] In order to solve the technical problem in the prior art that a large amount of gas generated during the transportation of cryogenic liquid cannot be directly discharged or recycled due to overcooling, a vacuum insulation device for discharging cryogenic gas at room temperature is provided.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A vacuum insulation device for discharging cryogenic gas at room temperature comprises an outer shell, an inner shell is installed inside the outer shell, a heater is installed inside the inner shell, one end of a vacuum insulation joint is connected to the inner shell, the other end of the vacuum insulation joint passes through the outer shell and is connected to the outside, an air inlet is provided at one end of the vacuum insulation joint located outside the outer shell, and an exhaust port is also provided on the top of the inner shell, and the exhaust port is connected to the outside of the outer shell.

[0007] Furthermore, a vacuum insulation interlayer is provided between the outer shell and the inner shell.

[0008] Furthermore, the top end of the exhaust port is connected with an exhaust port flange.

[0009] Furthermore, a vacuum joint is connected to the surface of the shell.

[0010] Furthermore, a maintenance flange is connected to the bottom end of the shell, a bottom shell is installed on the maintenance flange, a temperature controller is installed in the bottom shell, and the temperature controller is electrically connected to the heating rod.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] 1. The product of the utility model has the advantage of not frosting or icing. The vacuum interlayer 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; the three types of heat conduction are reduced to the minimum value, achieving the requirement that the outer pipe and outer cylinder of the product are kept consistent with the ambient temperature.

[0013] 2. The vacuum insulation device of the utility model has a compact layout and reasonable process, and various valves can be adjusted or replaced according to the process required by the user.

[0014] 3. 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.

[0015] 4. The entire product of the utility model adopts a vacuum insulation structure. When conveying cryogenic liquids, its surface will not freeze or frost, and there will be no water droplets or water mist, which ensures the cleanliness and tidiness of the on-site environment to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the front view of the internal structure of the utility model;

[0017] Figure 2 This is the external structure diagram of the utility model;

[0018] Figure 3 It is a top view of the internal structure of the utility model.

[0019] Markings in the figure: 1-exhaust flange, 2-exhaust port, 3-vacuum insulation interlayer, 4-outer shell, 5-evacuation joint, 6-inner shell, 7-heating rod, 8-maintenance flange, 9-temperature controller, 10-vacuum insulation joint, 11-air inlet. DETAILED DESCRIPTION

[0020] 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.

[0021] A vacuum insulation device for discharging cryogenic gas at room temperature, comprising an outer shell 4, an inner shell 6 installed inside the outer shell 4, a heater installed inside the inner shell 6, one end of a vacuum insulation joint 10 connected to the inner shell 6, the other end of the vacuum insulation joint 10 passes through the outer shell 4 and communicates with the outside, an air inlet 11 is provided at one end of the vacuum insulation joint 10 located outside the outer shell 4, and an exhaust port 2 is also provided on the top of the inner shell 6, and the exhaust port 2 is communicated with the outside of the outer shell 4. An air inlet 11 is used for the entry of cryogenic medium; an air outlet is used for the outflow of normal temperature gas. The device is composed of several stainless steel components and is designed for vacuum insulation.

[0022] Preferably, a vacuum insulation interlayer 3 is provided between the outer shell 4 and the inner shell 6 .

[0023] Preferably, the top end of the exhaust port 2 is connected to an exhaust port flange 1 .

[0024] Preferably, a vacuum joint 5 is connected to the surface of the housing 4, and the vacuum joint 5 can be vacuumed and maintained at any time.

[0025] Preferably, the bottom end of the housing 4 is connected with a maintenance flange 8, the bottom housing 4 is mounted on the maintenance flange 8, a temperature controller 9 is mounted inside the bottom housing 4, and the temperature controller 9 is electrically connected to the heating rod 7. The temperature control heating system is provided with four adjustable temperature levels.

[0026] This utility model is suitable for the discharge of various non-toxic and non-flammable low-temperature and cryogenic gases at room temperature; it can realize automatic heating and exhaust by connecting the power supply, and can also start and stop the heating function in conjunction with the on-site control program; it adopts a vacuum insulation structure, and the low-temperature gas flows into the device, and its surface does not freeze or frost, and there is no water droplets or water mist, avoiding the safety hazards caused by ice and dripping in the pipeline. The detachable structure is convenient for maintenance and replacement of parts; the temperature of the device can be adjusted in four gears; it adopts a full-structure 304 stainless steel, which is corrosion-resistant, has low cold loss, and is not easy to damage;

[0027] The exhaust port 2 of the device is provided with a flange, which can be equipped with accessories such as a safety valve, a pressure gauge, a check valve, and a filter. The air inlet 11 is a vacuum insulated female connector, which will not freeze due to low temperature. Preferably, the exhaust diameter is set to DN25, and the exhaust pressure is set to less than 1MPa.

[0028] 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 vacuum insulation device for discharging cryogenic gas at room temperature, characterized in that: The invention comprises an outer shell (4), an inner shell (6) is installed inside the outer shell (4), a heater is installed inside the inner shell (6), one end of a vacuum insulation joint (10) is connected to the inner shell (6), the other end of the vacuum insulation joint (10) passes through the outer shell (4) and is connected to the outside, an air inlet (11) is provided at one end of the vacuum insulation joint (10) located outside the outer shell (4), and an exhaust port (2) is also provided at the top of the inner shell (6), and the exhaust port (2) is connected to the outside of the outer shell (4).

2. A vacuum insulation device for discharging cryogenic gas at room temperature according to claim 1, characterized in that: A vacuum insulation interlayer (3) is provided between the outer shell (4) and the inner shell (6).

3. The vacuum insulation device for discharging cryogenic gas at room temperature according to claim 1, characterized in that: The top end of the exhaust port (2) is connected to an exhaust port flange (1).

4. The vacuum insulation device for discharging cryogenic gas at room temperature according to claim 1, characterized in that: An evacuation joint (5) is connected to the surface of the housing (4).

5. The vacuum insulation device for discharging cryogenic gas at room temperature according to claim 1, characterized in that: The bottom end of the shell (4) is connected to a maintenance flange (8), the maintenance flange (8) is installed with a bottom shell (4), a temperature controller (9) is installed in the bottom shell (4), and the temperature controller (9) is electrically connected to the heating rod (7).

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