Spectrum detection device for sulfur hexafluoride gas concentration

Abstract

The utility model discloses a spectrum detection device for sulfur hexafluoride gas concentration, which relates to the technical field of sulfur hexafluoride concentration detection and comprises a device main body, a detection probe is arranged outside the device body, an adjusting assembly is arranged on one side of the detection probe, an air inlet pipe is fixedly connected to one side of the device body through an external air pump, and a drainage pipe is fixedly connected to the side, away from the air inlet pipe, of the device body. The detection probe emits laser or infrared light beams to directly penetrate through a gas area to be detected, the concentration is inverted by measuring attenuation of transmission light or reflected light, the position of the detection probe is adjusted through the adjusting assembly so as to adapt to different areas, the sulfur hexafluoride gas concentration can be rapidly inspected and detected in real time, and the practicability of equipment is improved. When leakage is found, the device is switched to a suction mode, gas is sucked into the device body through the gas inlet pipe, the concentration and decomposition products are accurately measured, the two modes can be switched according to detection targets, environmental conditions and maintenance capacity, and various requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of sulfur hexafluoride concentration detection technology, specifically to a spectroscopic detection device for sulfur hexafluoride gas concentration. Background Technology

[0002] Sulfur hexafluoride is an inorganic compound that is a stable, colorless, odorless, non-toxic, and non-flammable gas at room temperature and pressure. It is about five times the density of air. The sulfur hexafluoride molecule has an octahedral structure with small bond distances and high bond energies, which makes it very stable. At temperatures not exceeding 180 degrees Celsius, its compatibility with electrical structural materials is similar to that of nitrogen.

[0003] There are currently several methods for measuring sulfur hexafluoride (SF6) gas concentration. Firstly, there are quantitative and qualitative detection methods for SF6. Qualitative detection is mainly used in environments where the concentration detection requirements are not high. Quantitative detection, on the other hand, requires real-time detection of the ppm concentration value, which is more demanding and difficult. At present, the only fast and accurate quantitative detection method is NDIR (non-dispersive infrared) detection technology. The advantages of NDIR detectors are high sensitivity, long service life, low maintenance workload, and safety and reliability.

[0004] Chinese patent literature discloses an infrared spectroscopy sulfur hexafluoride gas detection module (publication number CN209640214U), which includes a sulfur hexafluoride detection chamber set on a PCB circuit board. An infrared light source and a detection sensor are respectively arranged on the left and right sides of the sulfur hexafluoride detection chamber. An inlet pipe and an outlet pipe are arranged on the end face of the sulfur hexafluoride detection chamber. The detection sensor is connected to a gas sensor driving device. The gas sensor driving device sends a driving signal to the detection sensor and simultaneously receives the detection data from the detection sensor. Simultaneously, it sends the detection data to a signal amplifier, amplifies it, and then sends it to a high-precision analog-to-digital converter. After analog-to-digital conversion by the high-precision analog-to-digital converter, the data is imported into an analog microcontroller. The analog microcontroller is connected to a data output interface, and the data is exported through the data output interface. However, the following defects still exist in the implementation process:

[0005] While the devices described in the aforementioned literature can employ high-precision analog-to-digital converters (ADCs) to obtain the amplitudes of the detection channel and reference channel, the ratio of which is related to the gas concentration, thus improving data accuracy, these devices rely on drawing gas into the detection chamber for concentration detection. This results in a long response time and complex maintenance, limiting their effectiveness in detecting sulfur hexafluoride (SF6) gas leaks in large factories. However, relying solely on open optical path detection leads to weak trace detection capabilities. To balance sensitivity and convenience, it is necessary to integrate two detection modes to improve the efficiency and accuracy of SF6 concentration detection. Utility Model Content

[0006] The purpose of this invention is to provide a spectroscopic detection device for sulfur hexafluoride gas concentration, so as to solve the problem of low efficiency of using a single detection method mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A spectroscopic detection device for sulfur hexafluoride gas concentration includes a main body; a detection probe is disposed on the outside of the main body, an adjustment component is disposed on one side of the detection probe, an air inlet pipe is fixedly connected to one side of the main body via an external air pump, a drain pipe is fixedly connected to the side of the main body away from the air inlet pipe, a shelf is fixedly connected to one side of the main body, and an auxiliary detection component is disposed inside the main body. The auxiliary detection component includes a filter cylinder fixedly connected to the outer wall of the main body, a gas storage cylinder fixedly connected to the other end of the filter cylinder, a connecting pipe fixedly connected to the outer wall of the gas storage cylinder, a gas exchange cylinder fixedly connected to one end of the connecting pipe, and an output end of the connecting pipe connected to an external vacuum pump via a pipe.

[0009] The above technical solution involves a detection probe that emits a laser or infrared beam that directly passes through the area of ​​the gas to be tested. The concentration is determined by measuring the attenuation of the transmitted or reflected light. The position of the detection probe can be adjusted by an adjustment component to adapt to different areas. This allows for rapid, real-time monitoring of sulfur hexafluoride gas concentration, increasing the equipment's practicality. When a leak is detected, the system switches to suction mode, drawing the gas into the main body of the device through the intake pipe for precise measurement of concentration and decomposition products. The two modes can be switched according to the detection target, environmental conditions, and maintenance capabilities, catering to various needs.

[0010] A further improvement of the present invention is that the adjustment component includes a limiting frame fixedly connected to one side of the main body of the device, a lifting base slidably connected to the inner wall of the limiting frame, a limiting groove opened on one side of the limiting frame, and one side of the detection probe slidably connected to the inner wall of the limiting groove.

[0011] The above technical solution uses a limiting groove to prevent the detection probe from tilting.

[0012] A further improvement of this utility model is that: triangular inclined blocks are symmetrically fixedly connected to the inner side wall of the limiting frame; abutment blocks are symmetrically rotatably connected to the top of the inner side wall of the lifting base; springs are fixedly connected to one side of each of the two abutment blocks; a limiting rod is fixedly connected to one side of each of the two abutment blocks; the limiting rod and the lifting base are slidably connected; an elastic rope is fixedly connected to the bottom of each abutment block; a first rack is fixedly connected to one end of one of the elastic ropes; a gear is meshed on the inner side wall of the first rack; a second rack is meshed on the outer wall of the gear; and an adjusting rod is fixedly connected to the top of the gear.

[0013] Using the above technical solution, the inner wall of the limiting frame is provided with multiple triangular inclined blocks. While the sliding lifting base is in motion, the top inclined surfaces of the contact blocks located on both sides of the lifting base first contact the inclined surfaces of the triangular inclined blocks. After the two separate, the sharp corners of the triangular inclined blocks are engaged in the notches of the contact blocks. At this time, under the action of the contact blocks, the lifting base is fixed inside the limiting frame. When adjusting downwards, the adjusting rod is rotated, causing the gear to rotate and the first rack and second rack to slide inside the lifting base, and pulling the elastic rope back, so that the contact blocks are tilted inwards, thereby disengaging them from the triangular inclined blocks. Under the action of this structure, the position of the detection probe can be quickly adjusted, improving the detection efficiency.

[0014] A further improvement of the present invention is that: the top of the gas storage cylinder is connected to the top of the inner wall of the device body, a limiting plate is slidably connected to the top of the inner wall of the device body, a first-grade absorbent cotton is detachably connected inside the limiting plate, and convex grooves are provided on both sides of the limiting plate.

[0015] Using the above technical solution, the No. 1 absorbent cotton adsorbs the gas remaining on the inner wall, and the No. 1 absorbent cotton can be disassembled by sliding limit plate.

[0016] A further improvement of this utility model is that a fixed frame is slidably connected to the top of the inner wall of the device body, and a cleaning cotton is detachably connected to the outer wall of the fixed frame. The outer wall of the cleaning cotton and the inner wall of the device body are slidably connected.

[0017] Using the above technical solution, lime water can be sprayed onto the surface of the cleaning cotton to wipe the inner wall of the main body of the device, neutralizing the acidic gas and further improving the accuracy of subsequent detection.

[0018] A further improvement of this utility model is that: a filter screen is fixedly connected to the inner wall of the filter cylinder, a second type of absorbent cotton is detachably connected to the middle position inside the filter cylinder, and a condenser tube is fixedly connected to the end of the inner wall of the filter cylinder away from the filter screen.

[0019] The above technical solution involves a condenser tube that lowers the gas temperature, separates the liquid water, and then sends the gas into the main body of the device. At the same time, a filter screen is used to initially filter dust and impurities in the gas, and then the gas is adsorbed again by the No. 2 adsorption cotton, which increases the accuracy of gas detection.

[0020] A further improvement of this utility model is that a buffer pad is fixedly connected to one side of the lifting base, and multiple weakening grooves are opened on the surface of the buffer pad.

[0021] The above technical solution features a buffer pad with multiple weakening grooves on its surface and is made of rubber. During position adjustment, the buffer pad absorbs the potential energy generated by shaking, preventing vibration from damaging the internal components of the detection probe and improving the service life of the equipment.

[0022] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0023] 1. This utility model provides a spectral detection device for sulfur hexafluoride gas concentration. The device emits a laser or infrared beam through the gas area to be measured by a detection probe. The concentration is determined by measuring the attenuation of transmitted or reflected light. The position of the detection probe can be adjusted by an adjustment component to adapt to different areas. This allows for rapid inspection and real-time detection of sulfur hexafluoride gas concentration, increasing the practicality of the device. When a leak is detected, the device switches to a suction mode, drawing the gas into the main body of the device through an intake pipe for precise measurement of concentration and decomposition products. The two modes can be switched according to the detection target, environmental conditions, and maintenance capabilities, catering to various needs.

[0024] 2. This utility model provides a spectroscopic detection device for sulfur hexafluoride gas concentration. A gas pump draws gas into a storage cylinder through an inlet pipe and transports it to the top of the device body for collection and detection. After detection, a vacuum pump draws residual gas from the storage cylinder and the device body into a ventilation cylinder, ensuring that no sulfur hexafluoride residue affects the accuracy of subsequent sulfur hexafluoride concentration detection. It should be noted that after detection, residual gas on the inner wall is absorbed by a first-order absorbent cotton. This absorbent cotton can be disassembled using a sliding limit plate. Additionally, lime water can be sprayed onto the surface of the cleaning cotton to wipe the inner wall of the device body, neutralizing the acidic gas and further improving the accuracy of subsequent detections. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the overall structure of the limiting frame in this utility model;

[0028] Figure 3 This is a schematic diagram of the cooperative structure of the lifting base and the limiting frame in this utility model;

[0029] Figure 4 This is a three-dimensional structural diagram of the contact block and the first rack in this utility model.

[0030] Figure 5 This is a schematic diagram of the internal structure of the main body of the device in this utility model;

[0031] Figure 6 This is a three-dimensional structural diagram of the fixing frame and cleaning cotton in this utility model;

[0032] Figure 7 This is a schematic diagram of the internal structure of the filter cartridge in this utility model.

[0033] In the diagram: 1. Main body of the device; 2. Detection probe; 3. Lifting base; 4. Drain pipe; 5. Air inlet pipe; 6. Shelf; 7. Limiting frame; 8. Buffer pad; 9. Adjusting rod; 10. Limiting slide groove; 11. Triangular wedge block; 12. Abutment block; 13. Spring; 14. Limiting rod; 15. Elastic rope; 16. First rack; 17. Gear; 18. Second rack; 19. Air exchange cylinder; 20. Air storage cylinder; 21. Connecting pipe; 22. Filter cylinder; 23. Limiting plate; 24. No. 1 absorbent cotton; 25. Fixing frame; 26. Cleaning cotton; 27. Filter screen; 28. No. 2 absorbent cotton; 29. ​​Condenser pipe. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the embodiments.

[0035] Example 1

[0036] like Figure 1 and Figure 5 As shown, this utility model provides a spectroscopic detection device for sulfur hexafluoride gas concentration, including a device body 1; a detection probe 2 is provided on the outside of the device body 1, an adjustment component is provided on one side of the detection probe 2, an air inlet pipe 5 is fixedly connected to one side of the device body 1 through an external air pump, a drain pipe 4 is fixedly connected to the side of the device body 1 away from the air inlet pipe 5, a shelf 6 is fixedly connected to one side of the device body 1, and an auxiliary detection component is provided inside the device body 1, which is used to remove impurities carried in sulfur hexafluoride.

[0037] In this embodiment, the detection probe 2 emits a laser or infrared beam that passes directly through the area of ​​the gas to be tested. The concentration is inverted by measuring the attenuation of the transmitted or reflected light. The position of the detection probe 2 is adjusted by the adjustment component to adapt to different areas. This allows for rapid inspection and real-time detection of sulfur hexafluoride gas concentration, increasing the practicality of the equipment. When a leak is detected, the device switches to the suction mode, drawing the gas into the interior of the main body 1 through the air inlet pipe 5. The concentration and decomposition products are then accurately measured. The two modes can be switched according to the detection target, environmental conditions, and maintenance capabilities, catering to various needs.

[0038] Example 2

[0039] like Figure 5 and Figure 6As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the auxiliary detection component includes a filter cylinder 22 fixedly connected to the outer wall of the device body 1, an air storage cylinder 20 fixedly connected to the other end of the filter cylinder 22, a connecting pipe 21 fixedly connected to the outer wall of the air storage cylinder 20, an air exchange cylinder 19 fixedly connected to one end of the connecting pipe 21, and the output end of the connecting pipe 21 connected to an external vacuum pump through a pipe. The top of the air storage cylinder 20 is connected to the top of the inner wall of the device body 1. A limiting plate 23 is slidably connected to the top of the inner wall of the device body 1. An adsorption cotton 24 is detachably connected inside the limiting plate 23. Protruding grooves are provided on both sides of the limiting plate 23. A fixing frame 25 is slidably connected to the top of the inner wall of the device body 1. A cleaning cotton 26 is detachably connected to the outer wall of the fixing frame 25. The outer wall of the cleaning cotton 26 is slidably connected to the inner wall of the device body 1.

[0040] When high-precision detection of sulfur hexafluoride gas concentration is required during spectral detection, the gas needs to be drawn into the main body of the device 1. However, this method will result in residual gas inside the device when it is used again, leading to inaccurate data results during the second detection.

[0041] In this embodiment, a gas pump draws gas into the gas storage cylinder 20 through the air inlet pipe 5 and delivers it to the top of the device body 1 for collection and detection. After the detection is completed, a vacuum pump draws the residual gas in the gas storage cylinder 20 and inside the device body 1 into the ventilation cylinder 19 to ensure that there is no sulfur hexafluoride residue inside the equipment that would affect the accuracy of subsequent sulfur hexafluoride concentration detection. It should be noted that after the detection is completed, the gas remaining on the inner wall is absorbed by the No. 1 absorbent cotton 24. The No. 1 absorbent cotton 24 can be disassembled by sliding the limiting plate 23. At the same time, lime water can be sprayed on the surface of the cleaning cotton 26 to wipe the inner wall of the device body 1 to neutralize the acidic gas and further improve the accuracy of subsequent detection.

[0042] like Figure 7 As shown, preferably, a filter screen 27 is fixedly connected to the inner wall of the filter cylinder 22, a second absorbent cotton 28 is detachably connected to the middle position inside the filter cylinder 22, and a condenser tube 29 is fixedly connected to the end of the inner wall of the filter cylinder 22 away from the filter screen 27.

[0043] In this embodiment, the detection of sulfur hexafluoride concentration is not accurate in humid environments. Therefore, the gas temperature is reduced by the condenser 29, the liquid water is separated, and the gas is sent into the main body 1 of the device. At the same time, the filter screen 27 is used to initially filter the dust and impurities in the gas, and then the second adsorption cotton 28 is used for secondary adsorption to increase the accuracy of gas detection.

[0044] Example 3

[0045] like Figure 2As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the adjustment component includes a limiting frame 7 fixedly connected to one side of the device body 1, a lifting base 3 slidably connected to the inner side wall of the limiting frame 7, a limiting groove 10 is opened on one side of the limiting frame 7, one side of the detection probe 2 is slidably connected to the inner wall of the limiting groove 10, and a buffer pad 8 is fixedly connected to one side of the lifting base 3, and a plurality of weakening grooves are opened on the surface of the buffer pad 8.

[0046] like Figure 2 , Figure 3 and Figure 4 As shown, preferably, triangular inclined blocks 11 are symmetrically fixedly connected to the inner sidewall of the limiting frame 7, and abutment blocks 12 are symmetrically rotatably connected to the top of the inner sidewall of the lifting base 3. Springs 13 are fixedly connected to one side of each of the two abutment blocks 12, and limiting rods 14 are fixedly connected to one side of each of the two abutment blocks 12. The limiting rods 14 and the lifting base 3 are slidably connected. Elastic ropes 15 are fixedly connected to the bottom of each abutment block 12. One end of one of the elastic ropes 15 is fixedly connected to a first rack 16. A gear 17 is meshed on the inner sidewall of the first rack 16, and a second rack 18 is meshed on the outer sidewall of the gear 17. An adjusting rod 9 is fixedly connected to the top of the gear 17.

[0047] During rapid inspection using probe 2, the detection points may be too high, requiring manual lifting for inspection. This not only leads to inaccurate detection points but also increases hand fatigue for staff, hindering the inspection process.

[0048] In this embodiment, the back of the detection probe 2 passes through the limiting groove 10 and is slidably connected to the limiting frame 7. The detection probe 2 is connected to the lifting base 3 through the buffer pad 8. The operator adjusts the height of the detection probe 2 by adjusting the position of the lifting base 3. Specifically, the inner wall of the limiting frame 7 is provided with multiple triangular inclined blocks 11. While the lifting base 3 is sliding, the top inclined surface of the abutment block 12 located on both sides of the lifting base 3 first contacts the inclined surface of the triangular inclined block 11. After the two separate, the sharp corner of the triangular inclined block 11 is inserted into the notch of the abutment block 12. At this time, under the action of the abutment block 12, the lifting base 3 is fixed inside the limiting frame 7. When adjusting downward, the adjusting rod 9 is rotated, causing the gear 17 to rotate and the first rack 16 and the second rack 18 to slide inside the lifting base 3, and pulling the elastic rope 15 back, so that the abutment block 12 is tilted inward, thereby causing it to separate from the triangular inclined block 11. Under the action of this structure, the position of the detection probe 2 can be quickly adjusted, improving the detection efficiency.

[0049] It should be noted that the surface of the buffer pad 8 has multiple weakening grooves and is made of rubber. During the adjustment of its position, the buffer pad 8 absorbs the potential energy generated by shaking, avoiding vibration damage to the internal components of the detection probe 2 and improving the service life of the equipment.

[0050] The working principle of the spectral detection device for sulfur hexafluoride gas concentration is explained in detail below.

[0051] like Figures 1-7 As shown, during the detection process, a rapid inspection is first performed using the detection probe 2 according to different scenarios. The detection probe 2 emits a laser or infrared beam that directly passes through the area of ​​the gas to be tested. The concentration is inverted by measuring the attenuation of transmitted or reflected light. The back of the detection probe 2 passes through the limiting groove 10 and slides into the limiting frame 7. The detection probe 2 is connected to the lifting base 3 through the buffer pad 8. The operator adjusts the height of the detection probe 2 by adjusting the position of the lifting base 3. The inner wall of the limiting frame 7 is provided with multiple triangular inclined blocks 11. While the lifting base 3 is sliding, the top inclined surface of the abutment block 12 located on both sides of the lifting base 3 first contacts the inclined surface of the triangular inclined block 11. After the two separate, the sharp corner of the triangular inclined block 11 is inserted into the notch of the abutment block 12. At this time, under the action of the abutment block 12, the lifting base 3 is fixed inside the limiting frame 7. When adjusting downward, the adjusting rod 9 is rotated, causing the gear 17 to rotate and the first rack 16 and the second rack 1 8 slides within the lifting base 3 and pulls the elastic rope 15 back, causing the contact block 12 to tilt inward, thus disengaging it from the triangular inclined block 11. Under this structure, the position of the detection probe 2 can be quickly adjusted, improving detection efficiency. When a leak is detected, the system switches to suction mode, using an air pump to draw gas from the air inlet pipe 5 into the gas storage cylinder 20 and then to the top of the device body 1 for collection and detection. After detection, a vacuum pump is used to draw the residual gas in the gas storage cylinder 20 and the device body 1 into the ventilation cylinder 19, ensuring that there is no sulfur hexafluoride residue inside the equipment that would affect the accuracy of subsequent sulfur hexafluoride concentration detection. It should be noted that after detection, the gas remaining on the inner wall is absorbed by the first absorbent cotton 24. The first absorbent cotton 24 can be disassembled by sliding the limit plate 23. At the same time, lime water can be sprayed on the surface of the cleaning cotton 26 to wipe the inner wall of the device body 1, neutralizing the acidic gas and further improving the accuracy of subsequent detection.

[0052] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A device for spectroscopic detection of the concentration of sulfur hexafluoride gas, comprising a device body (1); characterized in that: The outside of the device body (1) is provided with a detection probe (2), one side of the detection probe (2) is provided with an adjusting assembly, one side of the device body (1) is fixedly connected with an air inlet pipe (5) through an external air pump, the side away from the air inlet pipe (5) of the device body (1) is fixedly connected with a drain pipe (4), one side of the device body (1) is fixedly connected with a storage rack (6), the inside of the device body (1) is provided with an auxiliary detection assembly, the auxiliary detection assembly comprises a filter cartridge (22) fixedly connected to the outer wall of the device body (1), the other end of the filter cartridge (22) is fixedly connected with a gas storage cylinder (20), the outer wall of the gas storage cylinder (20) is fixedly connected with a connecting pipe (21), one end of the connecting pipe (21) is fixedly connected with a gas exchange cylinder (19), the output end of the connecting pipe (21) is connected with an external vacuum pump through a pipeline.

2. The apparatus for detecting the concentration of sulfur hexafluoride gas by spectrum according to claim 1, characterized in that: The adjusting assembly comprises a limiting frame (7) fixedly connected to one side of the device body (1), a lifting base (3) is slidably connected to the inner side wall of the limiting frame (7), a limiting sliding groove (10) is formed in one side of the limiting frame (7), and one side of the detection probe (2) is slidably connected with the inner wall of the limiting sliding groove (10).

3. The apparatus for detecting the concentration of sulfur hexafluoride gas by spectrum according to claim 2, characterized in that: The inner side wall of the limiting frame (7) is fixedly connected with triangular inclined blocks (11) in a symmetrical manner, the top of the inner side wall of the lifting base (3) is rotatably connected with abutting blocks (12) in a symmetrical manner, one side of each of the two abutting blocks (12) is fixedly connected with a spring (13), one side of each of the two abutting blocks (12) is fixedly connected with a limiting rod (14), the limiting rod (14) and the lifting base (3) are slidably connected, the bottom of each of the abutting blocks (12) is fixedly connected with an elastic rope (15), one end of one of the elastic ropes (15) is fixedly connected with a first gear rack (16), the inner side wall of the first gear rack (16) is meshingly connected with a gear (17), the outer wall of the gear (17) is meshingly connected with a second gear rack (18), and the top of the gear (17) is fixedly connected with an adjusting rod (9).

4. The apparatus for detecting the concentration of sulfur hexafluoride gas by spectrum according to claim 3, characterized in that: The top of the gas storage cylinder (20) is connected with the top of the inner side wall of the device body (1), the top of the inner side wall of the device body (1) is slidably connected with a limiting plate (23), the inside of the limiting plate (23) is detachably connected with a first adsorbing cotton (24), and the two sides of the limiting plate (23) are provided with convex grooves.

5. The apparatus for detecting the concentration of sulfur hexafluoride gas by spectrum according to claim 4, characterized in that: The top of the inner side wall of the device body (1) is slidably connected with a fixing frame (25), the outer wall of the fixing frame (25) is detachably connected with a cleaning cotton (26), and the outer wall of the cleaning cotton (26) and the inner side wall of the device body (1) are slidably connected.

6. The apparatus for detecting the concentration of sulfur hexafluoride gas by spectrum according to claim 1, characterized in that: The inner wall of the filter cartridge (22) is fixedly connected with a filter screen (27), the inside of the filter cartridge (22) is detachably connected with a second adsorbing cotton (28) at the middle position, and the end of the inner wall of the filter cartridge (22) away from the filter screen (27) is fixedly connected with a condenser pipe (29).

7. The apparatus for detecting the concentration of sulfur hexafluoride gas by spectrum according to claim 2, characterized in that: One side of the lifting base (3) is fixedly connected with a buffer pad (8), and a plurality of weakening grooves are formed in the surface of the buffer pad (8).

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