Laboratory argon pipeline conveying system

Abstract

The utility model provides a laboratory argon pipeline conveying system which comprises a liquid argon storage system, a liquid argon vaporization system and an argon using system, the liquid argon storage system is provided with a low-temperature liquid argon storage tank, the low-temperature liquid argon storage tank is connected with the liquid argon vaporization system through a pipeline, the liquid argon vaporization system is provided with a water bath vaporizer, and the liquid argon vaporizer is connected with the argon using system through a pipeline. The rear end of the vaporizer is connected with an argon buffer tank; and the argon buffer tank is connected with an argon using system through a pipeline. According to the utility model, argon is conveyed by the pipeline instead of being supplied by a traditional argon bottle, so that the operation risk of frequently replacing the argon bottle is avoided, the safety risk of using the argon is reduced, and the labor efficiency of detection and test personnel is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgical equipment, and particularly relates to a laboratory argon gas pipeline conveying system. Background Art

[0002] Enterprise laboratories often use large-scale detection equipment such as inductively coupled plasma spectrometers, direct-reading spectrometers, and inductively coupled plasma mass spectrometers during the analysis and inspection process. These devices usually use argon gas. Argon gas has obvious emission lines in the wavelength ranges of visible light and ultraviolet light, and the positions and intensities of these emission lines are very stable, which is convenient for instrument calibration and accurate quantitative analysis. In addition, argon gas also has good inertness and stability and is not easily affected by chemical reactions. Therefore, when using a spectral analyzer for chemical analysis, argon gas can be used as an inert gas to protect the sample and the instrument and prevent possible interference.

[0003] When using argon gas for detection equipment, the requirements for argon gas are relatively high. The gas purity should be high, and the purity of argon gas is generally required to be above 99.999%; the pressure should be stable, and the pressure of argon gas should be kept stable, generally kept at 0.5 - 1.0 MPa to ensure the stability and repeatability of the spectral signal; the gas should be dry, and moisture and other impurities in the gas may affect the accuracy and precision of spectral analysis. Therefore, methods such as desiccants are needed to remove moisture and impurities; the gas should be sufficient. In order to avoid the situation of gas exhaustion or insufficiency, the gas reserve should be checked before use; safety requirements. Argon gas is an inert gas, but under high-pressure conditions, there is also an explosion risk. Therefore, relevant safety regulations need to be strictly observed.

[0004] Laboratory argon gas usually uses argon gas cylinders to provide the gas source. Argon gas cylinders are pressure vessels, and improper use poses an explosion risk; when a large number of detection devices use argon gas simultaneously, it is necessary to frequently replace the argon gas cylinders, which brings operation risks on the one hand and reduces work efficiency on the other hand. Summary of the Utility Model

[0005] In order to solve the above problems, the utility model provides a laboratory argon gas pipeline conveying system.

[0006] The technical solution of the utility model is realized as follows: A laboratory argon gas pipeline conveying system includes a liquid argon storage system, the liquid argon storage system is connected to a liquid argon vaporization system, the liquid argon vaporization system is connected to an argon gas use system in the laboratory. The liquid argon storage system includes a low-temperature liquid argon storage tank. The upper end of the low-temperature liquid argon storage tank is provided with a liquid argon inlet, and the lower end is provided with a liquid argon outlet. The liquid argon outlet is connected to the liquid argon vaporization system through a pipeline;

[0007] The liquid argon vaporization system includes a water bath vaporizer, which is connected to an argon buffer tank through a pipeline and an argon inlet A. The argon buffer tank is connected to an argon utilization system through an argon outlet A and a pipeline.

[0008] The argon utilization system includes an argon storage tank, which is provided with an argon inlet B and an argon outlet B. A pressure regulating valve on the pipeline of the argon outlet B is connected to a laboratory testing equipment system through a pipeline.

[0009] Preferably, the cryogenic liquid argon storage tank is provided with a pressure gauge A, a liquid level gauge, and a cryogenic pneumatic diaphragm regulating valve, and a cryogenic stop valve A is provided at the lower end.

[0010] Preferably, a cryogenic pneumatic diaphragm regulating and cutting-off valve and a cryogenic stop valve B are provided on the pipeline connecting the water bath vaporizer to the liquid argon outlet. A pressure gauge B and a thermometer are provided on the pipeline connecting the water bath vaporizer to the argon buffer tank. A safety valve A is provided at the upper end of the argon buffer tank, a pressure gauge C is provided in the middle, a stop valve is provided at the lower end, and a stop valve A is provided on the pipeline of the argon outlet A connecting to the argon utilization system.

[0011] Preferably, the argon storage tank is connected to the argon buffer tank. A stop valve B, a flow meter, and a stop valve are provided on the pipeline of the argon inlet B. A safety valve B is provided at the upper end of the argon storage tank, a pressure gauge D is provided in the middle, a stop valve is provided at the lower end, and a stop valve and a pressure regulating valve are provided on the pipeline connecting the argon outlet B to the testing equipment system.

[0012] Preferably, the argon utilization system can be connected to multiple in-laboratory testing equipment systems, and a parallel connection method is adopted among laboratories.

[0013] The beneficial effects of the present utility model are as follows: The present utility model changes the supply of argon for laboratory testing equipment from the traditional argon gas cylinder supply to pipeline argon gas transmission, avoiding the operation risks of frequent replacement of argon gas cylinders, reducing the safety risks of using argon gas, and improving the labor efficiency of testing and analysis personnel. Description of the Drawings

[0014] Figure 1 It is the overall flow chart of the present utility model.

[0015] Part Description: 1. Liquid argon storage system, 101. Liquid argon inlet, 102. Cryogenic pneumatic diaphragm regulating valve, 103. Cryogenic liquid argon storage tank, 104. Pressure gauge A, 105. Liquid level gauge, 106. Cryogenic stop valve A, 107. Liquid argon outlet.

[0016] 2. Liquid argon vaporization system, 201. Water bath vaporizer, 202. Low-temperature pneumatic diaphragm regulating cut-off valve, 203. Thermometer, 204. Low-temperature stop valve B, 205. Pressure gauge B, 206. Argon inlet A, 207. Argon buffer tank, 208. Safety valve A, 209. Pressure gauge C, 210. Argon outlet A, 211. Stop valve A;

[0017] 3. Argon usage system, 301. Argon storage tank, 302. Safety valve B, 303. Argon outlet B, 304. Pressure gauge D, 305. Argon inlet B, 306. Stop valve B, 307. Flowmeter, 308. Pressure regulating valve. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention 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 to the present invention.

[0020] Refer to the attached Figure 1, A laboratory argon pipeline transportation system, including a liquid argon storage system 1, a liquid argon vaporization system 2 and an argon gas usage system 3. The liquid argon storage system 1 is provided with a low-temperature liquid argon storage tank 103. At the upper end of the low-temperature liquid argon storage tank 103, there are a liquid argon inlet 101, a pressure gauge A 104, a liquid level gauge 105 and a low-temperature pneumatic diaphragm regulating valve 102. At the lower end, there are a low-temperature stop valve A 106 and a liquid argon outlet 107. The liquid argon outlet 107 is connected to the liquid argon vaporization system 2 through a pipeline; The liquid argon vaporization system 2 is successively provided with a low-temperature pneumatic diaphragm shut-off valve 202, a low-temperature stop valve B 204, a water bath vaporizer 201, a low-temperature stop valve, a pressure gauge B 205, a pressure sensor, a thermometer 203, a temperature sensor and an argon gas buffer tank 207. At the upper end of the argon gas buffer tank 207, there are a safety valve A 208 and an argon gas outlet A 210. In the middle, there is a pressure gauge C 209. At the lower end, there are a stop valve and an argon gas inlet A 206. The argon gas outlet A 206 is connected to the argon gas usage system 3; The argon gas usage system 3 is successively provided with a stop valve, a flow meter 307, a stop valve B 306 and an argon gas storage tank 301. At the upper end of the argon gas storage tank 301, there are a safety valve B 302 and an argon gas outlet B 303. In the middle, there is a pressure gauge D 304. At the lower end, there are a stop valve and an argon gas inlet B 305. The pipeline of the argon gas outlet B 303 is provided with a stop valve and a pressure regulating valve 308. The pressure regulating valve 308 is connected to the laboratory testing equipment system through a pipeline.

[0021] A pressure upper limit is set for the low-temperature pneumatic diaphragm regulating valve 102 on the low-temperature liquid argon storage tank 103. When the pressure in the storage tank is greater than the pressure upper limit, the regulating valve automatically releases gas to regulate the pressure.

[0022] For the low-temperature pneumatic diaphragm shut-off valve 202 in the liquid argon vaporization system 2, when the pipeline pressure or temperature is greater than the set standard value, the low-temperature pneumatic diaphragm shut-off valve 202 automatically disconnects. On the one hand, it controls the liquid argon vaporization amount, and on the other hand, it avoids the argon gas pressure and temperature in the pipeline from being too high, causing danger.

[0023] Specifically, when the laboratory argon pipeline transportation system is in use, liquid argon is pumped into the low-temperature liquid argon storage tank 103 through the liquid argon inlet 101 to half of the storage tank. Then, the liquid argon outlet stop valve 106 is opened, and the liquid argon is transported through the pipeline to the water bath vaporizer 201. By using heat exchange, the liquid argon sublimes into argon gas. The low-temperature pneumatic diaphragm shut-off valve 202 automatically controls the amount of liquid argon sublimating into argon gas. The argon gas enters the argon gas buffer tank 207 through the pipeline, and then enters the argon gas storage tank 301 in the argon gas usage system. It enters the laboratory testing equipment system through the pressure regulating valve 308 after the argon gas outlet B 303.

[0024] Multiple laboratories can use argon gas in the argon gas usage system, and the laboratories are in a parallel connection mode.

[0025] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A laboratory argon gas pipeline transportation system, characterized in that It includes a liquid argon storage system (1), the liquid argon storage system (1) is connected to a liquid argon vaporization system (2), the liquid argon vaporization system (2) is connected to an argon gas utilization system (3) in the laboratory, the liquid argon storage system (1) includes a cryogenic liquid argon storage tank (103), the cryogenic liquid argon storage tank (103) is provided with a liquid argon inlet (101) at the upper end and a liquid argon outlet (107) at the lower end, and the liquid argon outlet (107) is connected to the liquid argon vaporization system (2) through a pipeline; The liquid argon vaporization system (2) includes a water bath vaporizer (201), the water bath vaporizer (201) is connected to an argon gas buffer tank (207) through a pipeline and an argon gas inlet A (206), and the argon gas buffer tank (207) is connected to the argon gas utilization system (3) through an argon gas outlet A (210) and a pipeline; The argon gas utilization system (3) includes an argon gas storage tank (301), the argon gas storage tank (301) is provided with an argon gas inlet B (305) and an argon gas outlet B (303), and a pressure regulating valve (308) on the pipeline of the argon gas outlet B (303) is connected to the laboratory detection equipment system through a pipeline.

2. The laboratory argon gas pipeline transportation system according to claim 1, characterized in that The cryogenic liquid argon storage tank (103) is provided with a pressure gauge A (104), a liquid level gauge (105) and a cryogenic pneumatic diaphragm regulating valve (102), and a cryogenic globe valve A (106) is provided at the lower end.

3. A laboratory argon gas pipeline transportation system according to claim 1, characterized in that On the pipeline connecting the water bath vaporizer (201) and the liquid argon outlet (107), there are a cryogenic pneumatic diaphragm regulating and cutting-off valve (202) and a cryogenic globe valve B (204). On the pipeline connecting the water bath vaporizer (201) and the argon gas buffer tank (207), there are a pressure gauge B (205) and a thermometer (203). The argon gas buffer tank (207) is provided with a safety valve A (208) at the upper end, a pressure gauge C (209) in the middle, and a globe valve at the lower end. On the pipeline of the argon gas outlet A (210) and the argon gas utilization system (3), there is a globe valve A (211).

4. A laboratory argon gas pipeline transportation system according to claim 1, characterized in that The argon gas storage tank (301) is connected to the argon gas buffer tank (207). On the pipeline of the argon gas inlet B (305), there are a globe valve B (306), a flow meter (307) and a globe valve. The argon gas storage tank (301) is provided with a safety valve B (302) at the upper end, a pressure gauge D (304) in the middle, and a globe valve at the lower end. On the pipeline connecting the argon gas outlet B (303) and the detection equipment system, there are a globe valve and a pressure regulating valve (308).

5. A laboratory argon gas pipeline transportation system according to claim 1 or 2 or 3 or 4, characterized in that The argon gas utilization system (3) can be connected to multiple laboratory detection equipment systems, and the laboratories are in parallel connection.

Images