CN203929456U - Sulfur hexafluoride gas sampling detecting device - Google Patents

Abstract

The utility model discloses a SF ₆ gas sampling and detection device, which solves the problems of poor sampling effect and inability to detect on-site in the existing device, and is characterized in that a non-return card and an indicator board are arranged on the upper part of the bottle body, and a Upper air guide rod, HF colorimetric tube, lower air guide rod, sampling/vacuumizing interface, two-position five-way valve, throttle valve, sampling bottle, gas washing bottle are set inside the bottle body; there are functions on the base Gear selection, function selection key, pressure gauge, power indicator light, power socket, two-position five-way valve connected to sampling/vacuumizing interface, check card, sampling bottle, throttle valve, gas washing bottle; throttle valve connected to HF The catch of the colorimetric tube. The utility model has only one external connection port, compact and reasonable structure, elegant appearance, simple and clear operation, convenient maintenance, flexible use, relatively independent functions, and can detect the concentration of hydrogen fluoride (HF) gas in the sample gas in time at the SF ₆ equipment site It integrates the functions of HF gas detection, gas washing and gas sampling of the sampled gas.

Description

Sulfur hexafluoride gas sampling and detection device

technical field

The utility model relates to a sampling and detection device, in particular to a device for sampling SF ₆ gas and detecting characteristic decomposition products.

Background technique

With the continuous development of the application of sulfur hexafluoride electrical equipment, the use of sulfur hexafluoride gas samples in operation to analyze whether there are latent faults in electrical equipment and the development trend of monitoring faults is the research direction of oil and gas workers. How to obtain Authentic samples are critical. The current metal container for SF ₆ gas sampling is a hollow container, the inner wall of which is easily compatible and adsorbed with SF ₆ gas, and it cannot be vacuumed before sampling, and there is no gas washing link, so the true state of the sample cannot be guaranteed.

SF ₆ gas decomposition products are also an important basis for judging whether electrical equipment is faulty. Using a colorimetric tube, the concentration of some SF ₆ characteristic decomposition gases can be checked simply and conveniently. Among them, HF gas detection is representative: for transformers and GIS equipment without arc extinguishing chambers, HF is an important characteristic gas for fault judgment and fault analysis. At present, this step needs to take back gas samples to the laboratory for analysis, which cannot be inspected immediately on site.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art and provide a kind of SF ₆ gas sampling and detection device, which is designed and manufactured in combination and integrates the functions of HF gas detection, gas washing and gas sampling of the sampling gas into one, both In addition to sampling SF ₆ gas for electrical equipment, gas storage tanks and gas storage cylinders that use SF ₆ gas, it can also detect the content of hydrogen fluoride (HF) gas in the sample gas in time at the site of SF ₆ gas use and storage.

The utility model is characterized in that it includes an operating handle, a bottle body and a base, and a check card and an indicator board are arranged on the upper part of the bottle body. The side of the bottle is equipped with an upper air guide rod, HF colorimetric tube, lower air guide rod, sampling/vacuumizing interface, handle, and the HF colorimetric tube is connected between the upper air guide rod and the lower air guide rod; There are two-position five-way valves, throttle valves, sampling bottles, and gas washing bottles inside; the base is provided with function selection gears, function selection keys, pressure gauges, power indicator lights, and power sockets. The position is divided into chromatographic gear, closing gear II, and vacuum gear; the operating handle is connected to the two-position five-way valve, and the two-position five-way valve is connected to the sampling/vacuumizing interface, check card, sampling bottle, throttling valve, gas washing bottle; the throttle valve is connected to the upper port of the HF colorimetric tube, and the sampling bottle and the gas washing bottle are each connected to a pressure gauge.

Operating procedures:

1. Before sampling, the function selection key at the lower part of the device should be turned to the vacuum position, the sampling/vacuum interface should be connected to the sampling bottle and the gas washing bottle respectively, and the sampling bottle and the gas washing bottle should be vacuumed.

2. When sampling, turn the operating handle clockwise to the HF test position. At this time, the sampling/vacuum interface is connected to the HF colorimetric tube interface, and the throttle valve is opened to start the HF test.

3. Continue to rotate the operating handle clockwise to the gas scrubbing position. At this time, the sampling/vacuumizing interface is connected to the gas scrubbing bottle interface, and sulfur hexafluoride gas enters the gas scrubbing bottle.

4. Continue to rotate the operating handle clockwise to the sampling position. At this time, the sampling/vacuum interface is connected to the sampling bottle interface, and sulfur hexafluoride gas enters the sampling bottle.

5. Continue to rotate the operating handle clockwise to the off position to end sampling.

The connecting pipeline and the inner wall of the sampling bottle of the utility model are passivated by saturated hydrogen sulfide gas, and the inner wall has no compatibility and adsorption for SF ₆ gas and its decomposition products after treatment, thereby ensuring the true state of the sample, which is not convenient It is of great significance to analyze the quality of SF ₆ gas by chromatography or mass spectrometry on site.

It can be seen from the above technical solution that the utility model has only the only external connection port (the same interface for vacuum pumping, gas sampling and sample gas output detection), compact and reasonable structure, beautiful appearance, simple and clear operation, convenient maintenance and flexible use , The function is relatively independent, and it has its own HF gas colorimetric tube detection, and the pressure gauge displays the pressure of the sampled gas during sampling; it has good adaptability, and it is not only suitable for sulfur hexafluoride gas electrical equipment, but also for SF6 gas electrical equipment. Sampling and detection of hexafluoride gas cylinders and gas storage tanks; small size, light weight, suitable for production sites; can detect the content of hydrogen fluoride (HF) gas in the sample gas in time at the SF ₆ equipment site, and the first time for SF 6 ₆ Make a preliminary judgment on the discharge failure of the equipment; integrate the functions of HF gas detection, gas washing and gas sampling of the sampled gas, and use a card sleeve type quick hose connection for the external interface, which is convenient to use and free from maintenance.

Description of drawings

Fig. 1 is a schematic diagram of the appearance structure of the utility model.

Fig. 2 is a schematic diagram of the internal structure of the utility model.

Fig. 3 is a schematic diagram of the indicator board of the present invention.

Fig. 4 is a schematic diagram of the function selection gear of the utility model.

In the figure, 1. Operating handle, 2. Non-return card, 3. Indicator board, 4. Bottle body, 5. Upper air guide rod, 6. HF colorimetric tube, 7. Lower air guide rod, 8. Sampling/pumping Vacuum interface, 9. Handle, 10. Base, 11. Function selection gear, 12. Function selection key, 13. Pressure gauge, 14. Power indicator light, 15. Power socket, 16. Two-position five-way valve, 17 .Sampling bottle, 18. Throttle valve, 19. Washing bottle;

31. Closing gear Ⅰ, 32. Sampling gear, 33. Air washing gear, 34. HF testing gear;

111. Chromatography file, 112. Close file II, 113. Vacuum file.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, the utility model includes an operating handle 1, a check card 2, an indicator plate 3, a bottle body 4, an upper air guide rod 5, an HF colorimetric tube 6, a lower air guide rod 7, and a sampling/vacuumizing interface 8. Handle 9, base 10, function selection gear 11, function selection key 12, pressure gauge 13, power indicator light 14, power socket 15, etc. A non-return card 2 and an indicator plate 3 are arranged on the top of the bottle body 4 . As shown in Figure 3, the indicator board 3 is divided into closing gear I 31, sampling gear 32, air washing gear 33, and HF testing gear 34. On the side of the bottle body 4, the upper air guide rod 5, HF colorimetric tube 6, lower air guide rod 7, sampling/vacuumizing interface 8, handle 9 are set, and the HF colorimetric tube 6 is connected to the upper air guide rod 5 and the lower air guide rod 5. Between the air guide rods 7; the base 10 is provided with a function selection gear 11, a function selection key 12, a pressure gauge 13, a power indicator light 14, and a power socket 15. As shown in FIG. 4 , the function selection gear 11 is divided into a chromatographic gear 111 , a closing gear II 112 , and a vacuum gear 113 .

As shown in FIG. 2 , a two-position five-way valve 16 , a throttle valve 18 , a sampling bottle 17 , and a gas washing bottle 19 are arranged inside the bottle body 4 . The operating handle 1 is connected to a two-position five-way valve 16, and the two-position five-way valve 168 is connected to a sampling/vacuumizing interface, a check card 2, a sampling bottle 17, a throttle valve, and a gas washing bottle 19; The throttle valve 18 is connected to the upper port of the HF colorimetric tube 6, and the sampling bottle 17 and the gas washing bottle 19 are each connected to a pressure gauge 13.

Claims (1)

1. A sulfur hexafluoride gas sampling and detection device, characterized in that it comprises a bottle body (4), an operating handle (1), a base (10), and a check card (2), indicating plate (3), the indicator plate (3) is divided into closing gear I (31), sampling gear (32), washing gas gear (33), HF test gear (34); on the side of the bottle body (4) Set the upper air guide rod (5), HF colorimetric tube (6), lower air guide rod (7), sampling/vacuumizing interface (8), handle (9), and the HF colorimetric tube (6) is connected to the upper Between the air guide rod (5) and the lower air guide rod (7); a two-position five-way valve (16), a throttle valve (18), a sampling bottle (17), and a gas scrubber are arranged inside the bottle body (4). bottle (19); the base (10) is provided with a function selection gear (11), a function selection key (12), a pressure gauge (13), a power indicator light (14), and a power socket (15). The function selection gear (11) is divided into chromatographic gear (111), closing gear II (112), and vacuum gear (113); the operating handle (1) is connected to the two-position five-way valve (16), and the The two-position five-way valve (16) is connected to the sampling/vacuumizing interface (8), the check card (2), the sampling bottle (17), the throttle valve (18), and the gas washing bottle (19); The valve (18) is connected to the upper port of the HF colorimetric tube (6), and the sampling bottle (17) and the gas washing bottle (19) are respectively connected to a pressure gauge (13).