Nitrogen pressure adjusting device

Abstract

The utility model discloses a nitrogen pressure adjusting device, which relates to the technical field of gas pressure adjustment and comprises a liquid nitrogen storage tank, the output end of the liquid nitrogen storage tank is fixedly communicated with a first conveying pipeline, and the output end of the first conveying pipeline is fixedly communicated with a liquid nitrogen pushing assembly. The output end of the liquid nitrogen pushing assembly fixedly communicates with a flow dividing pipeline, the output end of the flow dividing pipeline fixedly communicates with an air temperature type vaporizer, and the output end of the air temperature type vaporizer fixedly communicates with a second safety valve. Liquid nitrogen is converted into nitrogen through the nitrogen buffer tank, the air temperature type vaporizer and the filtering assembly, and the nitrogen is filtered, so that the nitrogen can be stored in the nitrogen buffer tank, the purpose of saving the nitrogen is achieved, and carbon emission in the links of liquid nitrogen manufacturing and transportation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas pressure regulation, in particular to a nitrogen pressure regulating device. Background Art

[0002] In the process of producing products, the factory needs to use liquid nitrogen to cool the production equipment. Different production lines need to use nitrogen at two pressures of 2.0MPa and 0.5MPa. When using nitrogen at a pressure of 2.0MPa, the liquid nitrogen tank needs to be pressurized to 2.0MPa to meet the needs of the production line. When the liquid nitrogen tank needs to be replenished with liquid nitrogen, due to national policy standards, liquid nitrogen needs to be transported at low pressure. The liquid nitrogen pressure inside the liquid nitrogen tank truck is less than 2.0MPa, so the liquid nitrogen tank pressure needs to be reduced to 0.7MPa in advance, otherwise the liquid nitrogen tank truck will not be able to fill the liquid nitrogen into the liquid nitrogen tank.

[0003] The existing method of adjusting the pressure of the liquid tank is to discharge nitrogen into the external environment, resulting in a waste of liquid nitrogen. In addition, the process of discharging nitrogen into the external environment is time-consuming and requires workers to supervise for a long time, which consumes a lot of manpower and affects the production efficiency of the production line. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the existing way of adjusting the pressure of the liquid tank in the prior art is to discharge nitrogen into the external environment, resulting in waste of liquid nitrogen, and the process of discharging nitrogen into the external environment is time-consuming and requires workers to be arranged for long-term supervision, thereby consuming a large amount of manpower and affecting the production efficiency of the production line, and a nitrogen pressure regulating device is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nitrogen pressure adjustment device, comprising a liquid nitrogen storage tank, the output end of the liquid nitrogen storage tank is fixedly connected to a No. 1 delivery pipeline, the output end of the No. 1 delivery pipeline is fixedly connected to a liquid nitrogen push assembly, the output end of the liquid nitrogen push assembly is fixedly connected to a shunt pipeline, the output end of the shunt pipeline is fixedly connected to an air-temperature vaporizer, the output end of the air-temperature vaporizer is fixedly connected to a No. 2 safety valve, the output end of the No. 2 safety valve is fixedly connected to a confluence pipeline, the output end of the confluence pipeline is fixedly connected to a filter assembly, the output end of the filter assembly is fixedly connected to a buffer storage pipeline, the output end of the buffer storage pipeline is fixedly connected to a plurality of No. 1 electric-controlled valves, and the output end of the No. 1 electric-controlled valve is fixedly connected to a nitrogen buffer tank.

[0006] Preferably, the liquid nitrogen pushing assembly includes two No. 1 safety valves, a gas replenishing pipe is fixedly connected between the two No. 1 safety valves, one No. 1 safety valve is fixedly connected to the No. 1 delivery pipeline, and the other No. 1 safety valve is fixedly connected to the input end of the diversion pipeline.

[0007] Preferably, the diversion pipeline includes a No. 1 inlet pipe and two No. 1 diversion pipes, the input ends of the two No. 1 diversion pipes are symmetrically fixedly connected to one side of the No. 1 inlet pipe, and the output ends of the two No. 1 diversion pipes are fixedly connected to the input end of the air-temperature vaporizer.

[0008] Preferably, the confluence pipe includes two No. 2 shunt pipes and a No. 2 inlet pipe, and the output ends of the two No. 2 shunt pipes are respectively fixedly connected to one side of the No. 2 inlet pipe.

[0009] Preferably, the filter assembly includes two No. 3 safety valves, two drainage tubes, two filter tubes and a delivery tube. The two ends of the two filter tubes are symmetrically fixed and connected to the two ends of the two drainage tubes, and the two ends of the delivery tube are fixed and connected to the middle of the drainage tube. The delivery tube and one end of the two filter tubes are fixedly connected with a No. 2 electric-controlled valve.

[0010] Preferably, a filter is fixedly installed in the middle of the filter tube.

[0011] Preferably, an anti-corrosion protection box is fixedly installed on the outer sides of the liquid nitrogen pushing assembly and the filtering assembly.

[0012] Preferably, the anti-corrosion protection box comprises sheet metal side panels and a box cover.

[0013] Preferably, the box cover is rotatably clamped on one side of the sheet metal side panel.

[0014] Preferably, an observation window is fixedly installed in the middle of the box cover.

[0015] Compared with the prior art, the advantages and positive effects of the utility model are:

[0016] 1. In the present invention, liquid nitrogen is converted into nitrogen gas and filtered through a nitrogen buffer tank, an air-temperature vaporizer and a filter assembly, so that the nitrogen gas can be stored inside the nitrogen buffer tank, thereby achieving the purpose of saving nitrogen gas and reducing carbon emissions in the liquid nitrogen manufacturing and transportation links.

[0017] 2. In the utility model, by installing an anti-corrosion protection box on the outside of the liquid nitrogen push assembly and the filter assembly, the liquid nitrogen push assembly and the filter assembly are protected from corrosion by the external environment, the service life of the nitrogen pressure regulating device is extended, and it is convenient for workers to inspect and maintain the liquid nitrogen push assembly and the filter assembly installed therein. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a nitrogen pressure adjustment device;

[0019] Figure 2 A schematic diagram of the connection relationship between an air-temperature vaporizer and a converging pipe in a nitrogen pressure regulating device proposed by the utility model;

[0020] Figure 3 The utility model provides a top view of an air temperature vaporizer and a converging pipe in a nitrogen pressure regulating device;

[0021] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0022] Figure 5 for Figure 3 A local enlarged schematic diagram of point B in the middle.

[0023] Legend: 1. Liquid nitrogen storage tank; 11. No. 1 delivery pipeline; 2. Liquid nitrogen push assembly; 21. No. 1 safety valve; 22. Gas replenishment pipe; 23. Diversion pipe; 231. No. 1 inlet pipe; 232. No. 1 diversion pipe; 3. Air-temperature vaporizer; 31. No. 2 safety valve; 4. Converging pipe; 41. No. 2 diversion pipe; 42. No. 2 inlet pipe; 5. Filter assembly; 51. No. 3 safety valve; 52. Drainage pipe; 53. Filter pipe; 531. Filter; 54. Delivery pipe; 55. No. 2 electric control valve; 6. Buffer storage pipeline; 61. No. 1 electric control valve; 7. Nitrogen buffer tank; 8. Anti-corrosion protection box; 81. Sheet metal side panel; 82. Box cover; 821. Observation window. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0026] Embodiment 1

[0027] like Figure 1-5As shown, the utility model provides a nitrogen pressure regulating device, including a liquid nitrogen storage tank 1, the output end of the liquid nitrogen storage tank 1 is fixedly connected to a No. 1 delivery pipeline 11, the output end of the No. 1 delivery pipeline 11 is fixedly connected to a liquid nitrogen push assembly 2, the output end of the liquid nitrogen push assembly 2 is fixedly connected to a shunt pipeline 23, the output end of the shunt pipeline 23 is fixedly connected to an air-temperature vaporizer 3, the output end of the air-temperature vaporizer 3 is fixedly connected to a No. 2 safety valve 31, the output end of the No. 2 safety valve 31 is fixedly connected to a confluence pipeline 4, the output end of the confluence pipeline 4 is fixedly connected to a filter assembly 5, the output end of the filter assembly 5 is fixedly connected to a buffer storage pipeline 6, the output end of the buffer storage pipeline 6 is fixedly connected to a plurality of No. 1 electric-controlled valves 61, the output end of the No. 1 electric-controlled valve 61 is fixedly connected to a nitrogen buffer tank 7, the liquid nitrogen push assembly 2 includes two No. 1 safety valves 21, a gas replenishment pipe 22 is fixedly connected between the two No. 1 safety valves 21, and a No. 1 safety valve 21 is connected to a No. 1 delivery pipeline 7. The pipeline 11 is fixedly connected, another No. 1 safety valve 21 is fixedly connected to the input end of the shunt pipeline 23, the shunt pipeline 23 includes a No. 1 inlet pipe 231 and two No. 1 shunt pipes 232, the input ends of the two No. 1 shunt pipes 232 are symmetrically fixedly connected to one side of the No. 1 inlet pipe 231, and the output ends of the two No. 1 shunt pipes 232 are fixedly connected to the input end of the air-temperature vaporizer 3, the converging pipeline 4 includes two No. 2 shunt pipes 41 and a No. 2 inlet pipe 42, and the two No. 2 shunt pipes 41 are fixedly connected to the input end of the air-temperature vaporizer 3. The output ends are fixedly connected to one side of the No. 2 inlet pipe 42, the filter assembly 5 includes two No. 3 safety valves 51, two drainage pipes 52, two filter pipes 53 and a delivery pipe 54, the two ends of the two filter pipes 53 are symmetrically fixedly connected to the two ends of the two drainage pipes 52, the two ends of the delivery pipe 54 are fixedly connected to the middle of the drainage pipe 52, the delivery pipe 54 and one end of the two filter pipes 53 are fixedly connected with a No. 2 electric-controlled valve 55, and a filter 531 is fixedly installed in the middle of the filter pipe 53.

[0028] The specific configuration and function of this embodiment are described in detail below. Before filling the liquid nitrogen storage tank 1 with liquid nitrogen, the liquid nitrogen in the liquid nitrogen storage tank 1 is passed into the No. 1 delivery pipe 11, and the liquid nitrogen enters the liquid nitrogen push assembly 2 from the No. 1 delivery pipe 11. The high-pressure gas enters the liquid nitrogen push assembly 2 through the gas replenishment pipe 22, and pushes the liquid nitrogen into the diversion pipe 23. Then, through the No. 1 inlet pipe 231 and the No. 1 diversion pipe 232 in the diversion pipe 23, they enter the two air-temperature vaporizers 3 respectively, and convert the liquid nitrogen into nitrogen. The nitrogen enters the converging pipe through the No. 2 safety valve 31. 4, and enters the interior of the No. 2 inlet pipe 42 through the two No. 2 shunt pipes 41 in turn, and enters the interior of the filter assembly 5 through the No. 2 inlet pipe 42. When it is necessary to filter nitrogen, close the No. 2 electric control valve 55 installed on the delivery pipe 54, so that the nitrogen enters the interior of the filter pipe 53 through the drainage pipe 52, and the filter 531 filters the nitrogen. The filtered nitrogen enters the interior of the buffer storage pipeline 6 and is finally stored in the interior of the nitrogen buffer tank 7. The nitrogen released in the liquid nitrogen storage tank 1 is stored by the nitrogen buffer tank 7, thereby achieving the purpose of nitrogen saving and reducing carbon emissions in the liquid nitrogen manufacturing and transportation links.

[0029] Embodiment 2

[0030] like Figure 1 and Figure 2 As shown, it includes a liquid nitrogen storage tank 1, the output end of the liquid nitrogen storage tank 1 is fixedly connected to a No. 1 delivery pipeline 11, the output end of the No. 1 delivery pipeline 11 is fixedly connected to a liquid nitrogen push assembly 2, the output end of the liquid nitrogen push assembly 2 is fixedly connected to a shunt pipeline 23, the output end of the shunt pipeline 23 is fixedly connected to an air-temperature vaporizer 3, the output end of the air-temperature vaporizer 3 is fixedly connected to a No. 2 safety valve 31, the output end of the No. 2 safety valve 31 is fixedly connected to a converging pipeline 4, the output end of the converging pipeline 4 is fixedly connected to a filter assembly 5, the outer sides of the liquid nitrogen push assembly 2 and the filter assembly 5 are fixedly installed with an anti-corrosion protection box 8, the anti-corrosion protection box 8 includes a sheet metal side panel 81 and a box cover 82, the box cover 82 is rotatably clamped on one side of the sheet metal side panel 81, and an observation window 821 is fixedly installed in the middle of the box cover 82.

[0031] The effect achieved by the entire embodiment is that the main function of the anti-corrosion protection box 8 is to protect the liquid nitrogen pushing assembly 2 and the filter assembly 5 from being corroded by the external environment. During daily maintenance of the liquid nitrogen pushing assembly 2 and the filter assembly 5, the maintenance worker can observe the working status of the liquid nitrogen pushing assembly 2 and the filter assembly 5 through the observation window 821. When the liquid nitrogen pushing assembly 2 and the filter assembly 5 need to be repaired and maintained, the box cover 82 is flipped upwards to repair and maintain the liquid nitrogen pushing assembly 2 and the filter assembly 5.

[0032] The use method and working principle of the device are as follows: before filling the liquid nitrogen storage tank 1 with liquid nitrogen, the liquid nitrogen in the liquid nitrogen storage tank 1 is passed into the No. 1 delivery pipe 11, and the liquid nitrogen enters the liquid nitrogen push assembly 2 from the No. 1 delivery pipe 11, and the high-pressure gas enters the liquid nitrogen push assembly 2 through the gas replenishment pipe 22, and pushes the liquid nitrogen into the diversion pipe 23, and then passes through the No. 1 inlet pipe 231 and the No. 1 diversion pipe 232 in the diversion pipe 23, and enters the two air-temperature vaporizers 3 respectively, and converts the liquid nitrogen into nitrogen gas. The nitrogen gas enters the confluence pipe 4 through the No. 2 safety valve 31, and enters the No. 2 inlet pipe 42 through the two No. 2 diversion pipes 41 in turn, and enters the No. 2 inlet pipe 42 from the No. 2 inlet pipe 42 into the filter assembly 5. Inside, when it is necessary to filter nitrogen, close the No. 2 electric control valve 55 installed on the delivery pipe 54, so that the nitrogen enters the interior of the filter tube 53 through the drainage pipe 52, and the filter 531 filters the nitrogen. The filtered nitrogen enters the interior of the buffer storage pipeline 6 and is finally stored in the interior of the nitrogen buffer tank 7; the main function of the anti-corrosion protection box 8 is to protect the liquid nitrogen push component 2 and the filter component 5 from being corroded by the external environment. During daily maintenance of the liquid nitrogen push component 2 and the filter component 5, the maintenance worker can observe the working status of the liquid nitrogen push component 2 and the filter component 5 through the observation window 821. When the liquid nitrogen push component 2 and the filter component 5 need to be repaired and maintained, flip the box cover 82 upwards to repair and maintain the liquid nitrogen push component 2 and the filter component 5.

[0033] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A nitrogen pressure regulating device, comprising a liquid nitrogen storage tank (1), characterized in that: The output end of the liquid nitrogen storage tank (1) is fixedly connected to a No. 1 delivery pipeline (11), the output end of the No. 1 delivery pipeline (11) is fixedly connected to a liquid nitrogen push assembly (2), the output end of the liquid nitrogen push assembly (2) is fixedly connected to a shunt pipeline (23), the output end of the shunt pipeline (23) is fixedly connected to an air-temperature vaporizer (3), the output end of the air-temperature vaporizer (3) is fixedly connected to a No. 2 safety valve (31), the output end of the No. 2 safety valve (31) is fixedly connected to a converging pipeline (4), the output end of the converging pipeline (4) is fixedly connected to a filter assembly (5), the output end of the filter assembly (5) is fixedly connected to a buffer storage pipeline (6), the output end of the buffer storage pipeline (6) is fixedly connected to a plurality of No. 1 electric-controlled valves (61), and the output end of the No. 1 electric-controlled valve (61) is fixedly connected to a nitrogen buffer tank (7).

2. A nitrogen pressure regulating device according to claim 1, characterized in that: The liquid nitrogen pushing assembly (2) comprises two No. 1 safety valves (21), a gas replenishing pipe (22) being fixedly connected between the two No. 1 safety valves (21), one of the No. 1 safety valves (21) being fixedly connected to a No. 1 delivery pipeline (11), and the other No. 1 safety valve (21) being fixedly connected to an input end of a diversion pipeline (23).

3. A nitrogen pressure regulating device according to claim 1, characterized in that: The flow diversion pipeline (23) comprises a No. 1 flow inlet pipe (231) and two No. 1 flow diversion pipes (232), the input ends of the two No. 1 flow diversion pipes (232) are symmetrically fixedly connected to one side of the No. 1 flow inlet pipe (231), and the output ends of the two No. 1 flow diversion pipes (232) are fixedly connected to the input end of the air-temperature vaporizer (3).

4. A nitrogen pressure regulating device according to claim 1, characterized in that: The confluence pipe (4) comprises two No. 2 shunt pipes (41) and a No. 2 inlet pipe (42), and the output ends of the two No. 2 shunt pipes (41) are respectively fixedly connected to one side of the No. 2 inlet pipe (42).

5. A nitrogen pressure regulating device according to claim 1, characterized in that: The filter assembly (5) comprises two No. 3 safety valves (51), two drainage tubes (52), two filter tubes (53) and a delivery tube (54); the two ends of the two filter tubes (53) are symmetrically fixedly connected to the two ends of the two drainage tubes (52); the two ends of the delivery tube (54) are fixedly connected to the middle of the drainage tube (52); and the delivery tube (54) and one end of the two filter tubes (53) are fixedly connected to a No. 2 electric control valve (55).

6. A nitrogen pressure regulating device according to claim 5, characterized in that: A filter (531) is fixedly mounted in the middle of the filter tube (53).

7. A nitrogen pressure regulating device according to claim 1, characterized in that: An anti-corrosion protection box (8) is fixedly mounted on the outer sides of the liquid nitrogen pushing component (2) and the filtering component (5).

8. A nitrogen pressure regulating device according to claim 7, characterized in that: The anti-corrosion protection box (8) comprises a sheet metal side plate (81) and a box cover (82).

9. A nitrogen pressure regulating device according to claim 8, characterized in that: The box cover (82) is rotatably engaged with one side of the sheet metal side plate (81).

10. A nitrogen pressure regulating device according to claim 8, characterized in that: An observation window (821) is fixedly mounted in the middle of the box cover (82).

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