Liquid level meter heating device of liquid oxygen storage tank

Abstract

The utility model relates to the technical field of heating devices, and discloses a liquid oxygen storage tank liquid level meter heating device. The liquid oxygen storage tank liquid level meter heating device comprises an air pump, an air inlet pipe is fixedly installed below the air pump, a connecting pipe is fixedly installed on the rear side of the air pump, an air chamber is fixedly installed on the rear side of the connecting pipe, a heat conduction plate is fixedly installed in the air chamber, and a cover plate is fixedly installed above the air chamber. The heating pipe is of a three-way structure, an opening in the front side of the heating pipe is connected with the bent pipe through a flange, the bent pipe is communicated with the heating pipe, and the inner diameter of the heating pipe is larger than the outer diameter of the liquid phase pipe. The liquid-phase pipe is heated, so that the heated nitrogen flows through the outer side of the liquid-phase pipe, the temperature of the liquid-phase pipe is increased, the heating effect on the liquid-phase pipe is achieved, and the situation that the liquid-phase pipe is prone to ice blockage in the using process and consequently a pipeline is blocked can be avoided through the mode.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, in particular to a heating device for a liquid oxygen storage tank level gauge. Background Art

[0002] Liquid oxygen storage tank is a kind of equipment specially used for storing and supplying liquid oxygen. It is an insulated pressure vessel designed for the storage and supply of cryogenic liquid oxygen. Liquid oxygen storage tank can store liquid oxygen under deep cryogenic conditions. This deep cryogenic environment is much lower than the low temperature achieved by ordinary refrigeration engineering, generally below 120K. This equipment can liquefy or separate and purify the raw gas and its components to produce and maintain a deep cryogenic environment.

[0003] The existing referenceable Chinese utility model patent with announcement number CN2565001Y discloses a double bellows differential pressure level gauge, which is related to a measuring instrument for the height of liquid stored in a liquid storage container. It aims to solve the problem that the pressure in the high and low pressure chambers of the existing level gauge penetrates into the bellows, causing damage to the bellows and measurement failure. The level gauge comprises a central plate and a high pressure chamber and a low pressure chamber on both sides, respectively accommodating a high pressure bellows and a low pressure bellows in the high and low pressure chambers, the inner ends of the high and low pressure bellows have pipe seats connected to the central plate respectively, and the outer ends are respectively connected to the two ends of the central rod, the central rod has a reset spring, one end is connected to the dial on the central rod, and the other end is connected to the torque tube. The torque tube is connected to the angle magnification mechanism in a transmission manner, and the cavity openings of the high and low pressure chambers are respectively provided with seals between the pipe seats of the high and low pressure bellows. It is suitable for measuring the height of liquids such as liquid hydrogen, liquid oxygen, and liquid carbon dioxide in liquid storage containers.

[0004] The original liquid oxygen storage tank level gauge of the liquid oxygen purification product has no heating device. Due to the low temperature of liquid oxygen and the small diameter of the liquid phase tube of the level gauge, ice blockage and pipeline blockage are prone to occur during use, causing great interference to the measured value. The measured value will produce errors after the gas source pipeline on the positive side of the level gauge is blocked. At the same time, the nitrogen flow rate will also interfere with the measured value. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the utility model provides a liquid oxygen storage tank level gauge heating device, which has the advantages of being able to avoid and solve the above technical problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the present utility model provides the following technical solutions: A heating device for the liquid oxygen storage tank liquid level gauge, comprising: an air pump, an intake pipe is fixedly installed below the air pump, a connecting pipe is fixedly installed at the rear side of the air pump, an air chamber is fixedly installed at the rear side of the connecting pipe, a heat conducting plate is fixedly installed inside the air chamber, a cover plate is fixedly installed above the air chamber, a fan is fixedly installed above the cover plate, a limiting frame is fixedly installed above the fan, a bent pipe is fixedly installed at the rear side of the air chamber, a gas guide pipe is fixedly installed at the lower end of the bent pipe, and a heating pipe is fixedly installed at the rear end of the gas guide pipe; the air chamber can restrict the gas to pass through the heat conducting plates installed equidistantly inside.

[0009] As a preferred technical solution of the present utility model, the air pump is communicated with the air chamber through the connecting pipe, and the heat conducting plates are installed equidistantly left and right inside the air chamber; the air pump can transport nitrogen.

[0010] As a preferred technical solution of the present utility model, the connecting pipe is installed symmetrically front and back with the center of the air chamber as the reference on the front and rear sides of the air chamber, and an opening structure fitted with the heat conducting plate is provided on the surface of the cover plate; the connecting pipe can facilitate the connection between the air chamber and the air pump.

[0011] As a preferred technical solution of the present utility model, the upper end of the heat conducting plate penetrates through the top end of the cover plate and contacts the top surface of the inner wall of the limiting frame, and the bottom end of the limiting frame is fixedly connected to the cover plate; the heat conducting plate can facilitate the conduction of heat.

[0012] As a preferred technical solution of the present utility model, the fans are installed symmetrically front and back above the cover plate, and the air outlet directions of the fans are the same, and the fans are fitted and installed inside the limiting frame; the fans can generate an air flow to heat up the heat conducting plate.

[0013] As a preferred technical solution of the present utility model, the bent pipe is communicated with the air chamber through the connecting pipe, and the bent pipe is communicated with the gas guide pipe through a flange; the gas guide pipe can facilitate the nitrogen to enter the heating pipe.

[0014] As a preferred technical solution of the present utility model, the heating pipe is of a tee structure, the front opening of the heating pipe is connected to the bent pipe through a flange, the bent pipe is communicated with the heating pipe, and the inner diameter of the heating pipe is larger than the outer diameter of the liquid phase pipe; the bent pipe can facilitate the connection between the gas guide pipe and the connecting pipe.

[0015] Compared with the prior art, the present utility model provides a heating device for the liquid oxygen storage tank liquid level gauge, which has the following beneficial effects:

[0016] 1. In this utility model, through the setting of an air pump, an intake pipe is fixedly installed at the bottom end of the air pump. The bottom end of the intake pipe is communicated with a liquid oxygen storage tank. After the air pump is started, it can extract nitrogen in the liquid oxygen storage tank and transport it to the inside of the air chamber through a connecting pipe. The temperature of the heat conduction plate will decrease when nitrogen passes through. The airflow generated by the fan enables the outside air to flow through the part of the heat conduction plate above the cover plate, so that the heat conduction plate can absorb the heat in the outside air, thereby increasing the temperature of the nitrogen flowing between the heat conduction plates. The heating pipe is of a tee structure. The front opening of the heating pipe is connected to a bent pipe through a flange, and the bent pipe is communicated with the heating pipe. The inner diameter of the heating pipe is larger than the outer diameter of the liquid phase pipe. During use, the liquid phase pipe is placed inside the heating pipe. After the nitrogen is heated, it will enter the inside of the heating pipe through the connecting pipe, the bent pipe, and the air guide pipe. Thus, the heated nitrogen flows through the outside of the liquid phase pipe, thereby heating the liquid phase pipe and achieving a heating effect on the liquid phase pipe. This method can prevent the liquid phase pipe from being easily blocked by ice during use and blocking the pipeline.

[0017] 2. In this utility model, through the setting of the intake pipe, the intake pipe is communicated with the liquid oxygen storage tank. The nitrogen in the liquid oxygen storage tank will be transported to the air chamber through the air pump. After being heated, the nitrogen will enter the inside of the heating pipe through the connecting pipe, the bent pipe, and the air guide pipe. The nitrogen that enters the inside of the heating pipe will be re-discharged into the liquid oxygen storage tank, forming a nitrogen cycle. Thus, during the process of heating the liquid phase pipe, the air pressure inside the liquid oxygen storage tank will not increase, resulting in deviation in the detection data of the liquid level gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 is a schematic diagram of the connection structure between the air pump and the air chamber of this utility model;

[0020] Figure 3 is a schematic diagram of the fan installation structure of this utility model;

[0021] Figure 4 is a schematic diagram of the connection structure between the air guide pipe and the heating pipe of this utility model;

[0022] Among them: 1. Air pump; 11. Intake pipe; 12. Connecting pipe; 13. Air chamber; 14. Heat conduction plate; 15. Cover plate; 16. Fan; 17. Limit frame; 18. Bent pipe; 19. Air guide pipe; 110. Heating pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes in detail the embodiments of this utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate this utility model, but cannot be used to limit the scope of this utility model.

[0024] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1 - Figure 4 , in this embodiment, a liquid oxygen storage tank liquid level gauge heating device includes: an air pump 1, an air inlet pipe 11 is fixedly installed below the air pump 1, a connecting pipe 12 is fixedly installed behind the air pump 1, an air chamber 13 is fixedly installed behind the connecting pipe 12, a heat conducting plate 14 is fixedly installed inside the air chamber 13, a cover plate 15 is fixedly installed above the air chamber 13, a fan 16 is fixedly installed above the cover plate 15, a limiting frame 17 is fixedly installed above the fan 16, a bent pipe 18 is fixedly installed behind the air chamber 13, a gas guide pipe 19 is fixedly installed at the lower end of the bent pipe 18, and a heating pipe 110 is fixedly installed at the rear end of the gas guide pipe 19.

[0027] The air pump 1 is communicated with the air chamber 13 through the connecting pipe 12, and the heat conducting plates 14 are equidistantly installed left and right inside the air chamber 13.

[0028] The connecting pipe 12 is symmetrically installed on the front and rear sides of the air chamber 13 with the center of the air chamber 13 as the reference, and an opening structure fitted with the heat conducting plate 14 is provided on the surface of the cover plate 15.

[0029] The upper end of the heat conducting plate 14 penetrates through the top end of the cover plate 15 and contacts the top surface of the inner wall of the limiting frame 17, and the bottom end of the limiting frame 17 is fixedly connected to the cover plate 15.

[0030] The fans 16 are symmetrically installed on the upper side of the cover plate 15, and the air outlet directions of the fans 16 are the same. The fans 16 are fitted and installed inside the limiting frame 17.

[0031] The elbow pipe 18 is communicated with the air chamber 13 through the connecting pipe 12, and the elbow pipe 18 is communicated with the air guide pipe 19 through a flange.

[0032] The heating pipe 110 has a tee structure. The front opening of the heating pipe 110 is connected to the elbow pipe 18 through a flange. The elbow pipe 18 is communicated with the heating pipe 110, and the inner diameter of the heating pipe 110 is larger than the outer diameter of the liquid phase pipe.

[0033] Specifically, the air pump 1 can transport nitrogen. The air inlet pipe 11 can be communicated with the storage tank. The connecting pipe 12 can facilitate the connection between the air chamber 13 and the air pump 1. The air chamber 13 can restrict the gas from passing through the equally spaced heat conducting plates 14 installed inside. The heat conducting plates 14 can facilitate heat conduction. The cover plate 15 can seal the upper end of the air chamber 13. The fan 16 can generate an air flow to heat up the heat conducting plates 14. The limit frame 17 can restrict the gas flow direction. The elbow pipe 18 can facilitate the connection between the air guide pipe 19 and the connecting pipe 12. The air guide pipe 19 penetrates through the liquid oxygen storage tank, and the bottom end is located inside the liquid oxygen storage tank. The air guide pipe 19 can facilitate the nitrogen to enter the heating pipe 110. The heating pipe 110 is located inside the liquid oxygen storage tank, and the heating pipe 110 can restrict the nitrogen from passing through the outside of the liquid phase pipe.

[0034] During use, the air inlet pipe 11 is fixedly installed at the bottom end of the air pump 1. The bottom end of the air inlet pipe 11 is communicated with the liquid oxygen storage tank. After the air pump 1 is started, it can extract the nitrogen inside the liquid oxygen storage tank and transport it to the inside of the air chamber 13 through the connecting pipe 12. The temperature of the heat conducting plates 14 will decrease when the nitrogen passes through. The air flow generated by the fan 16 enables the outside air to flow through the part of the heat conducting plates 14 above the cover plate 15, so as to facilitate the heat conducting plates 14 to absorb the heat from the outside air, thereby increasing the temperature of the nitrogen flowing between the heat conducting plates 14. The heating pipe 110 has a tee structure. The front opening of the heating pipe 110 is connected to the elbow pipe 18 through a flange. The elbow pipe 18 is communicated with the heating pipe 110, and the inner diameter of the heating pipe 110 is larger than the outer diameter of the liquid phase pipe. During use, the liquid phase pipe is located inside the heating pipe 110. After the nitrogen is heated, it will enter the inside of the heating pipe 110 through the connecting pipe 12, the elbow pipe 18, and the air guide pipe 19, so that the heated nitrogen flows through the outside of the liquid phase pipe, thereby heating the liquid phase pipe and achieving a heating effect on the liquid phase pipe. This method can avoid the liquid phase pipe from being easily blocked by ice during use and blocking the pipeline. The air inlet pipe 11 is communicated with the liquid oxygen storage tank. The nitrogen in the liquid oxygen storage tank will be transported to the air chamber 13 through the air pump 1. After being heated, the nitrogen will enter the inside of the heating pipe 110 through the connecting pipe 12, the elbow pipe 18, and the air guide pipe 19. The nitrogen entering the inside of the heating pipe 110 will be discharged back into the liquid oxygen storage tank to form a nitrogen cycle, thereby avoiding an increase in the air pressure inside the liquid oxygen storage tank during the heating process of the liquid phase pipe, resulting in a deviation in the detection data of the liquid level gauge.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid oxygen storage tank liquid level gauge heating device, characterized in that, Including: An air pump (1), an intake pipe (11) is fixedly installed below the air pump (1), a connecting pipe (12) is fixedly installed at the rear side of the air pump (1), an air chamber (13) is fixedly installed at the rear side of the connecting pipe (12), a heat conducting plate (14) is fixedly installed inside the air chamber (13), a cover plate (15) is fixedly installed above the air chamber (13), a fan (16) is fixedly installed above the cover plate (15), a limiting frame (17) is fixedly installed above the fan (16), a bent pipe (18) is fixedly installed at the rear side of the air chamber (13), a guide pipe (19) is fixedly installed at the lower end of the bent pipe (18), and a heating pipe (110) is fixedly installed at the rear end of the guide pipe (19).

2. The temperature increasing device for the liquid oxygen storage tank liquid level gauge according to claim 1, wherein: The air pump (1) is communicated with the air chamber (13) through the connecting pipe (12), and the heat conducting plates (14) are installed equidistantly left and right inside the air chamber (13).

3. The temperature increasing device for the liquid oxygen storage tank liquid level gauge according to claim 1, wherein: The connecting pipe (12) is installed symmetrically front and back with the center of the air chamber (13) as the reference on the front and rear sides of the air chamber (13), and an opening structure fitted with the heat conducting plate (14) is provided on the surface of the cover plate (15).

4. The temperature increasing device for the liquid oxygen storage tank liquid level gauge according to claim 1, wherein: The upper end of the heat conducting plate (14) penetrates through the top end of the cover plate (15) and contacts the top surface of the inner wall of the limiting frame (17), and the bottom end of the limiting frame (17) is fixedly connected to the cover plate (15).

5. The temperature increasing device for the liquid oxygen storage tank liquid level gauge according to claim 1, wherein: The fans (16) are symmetrically installed front and back above the cover plate (15), and the air outlet directions of the fans (16) are the same. The fans (16) are fitted and installed inside the limiting frame (17).

6. The temperature increasing device for the liquid oxygen storage tank liquid level gauge according to claim 1, wherein: The bent pipe (18) is communicated with the air chamber (13) through the connecting pipe (12), and the bent pipe (18) is communicated with the guide pipe (19) through a flange.

7. The temperature increasing device for the liquid oxygen storage tank liquid level gauge according to claim 1, wherein: The heating pipe (110) is of a three-way structure. The front opening of the heating pipe (110) is connected to the bent pipe (18) through a flange. The bent pipe (18) is communicated with the heating pipe (110), and the inner diameter of the heating pipe (110) is larger than the outer diameter of the liquid phase pipe.

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