SF6 gas measuring device

Abstract

The utility model discloses an SF6 gas measuring device, belongs to the technical field of SF6 gas concentration detection, and aims to solve the problems that in the prior art, a mechanism for adjusting the position of a gas inlet pipe is lacked, the gas inlet pipe cannot be in contact with a leakage point, so that the position of the leakage point is measured inaccurately, a detection box cannot be closed after gas enters the detection box, and the detection cost is low. SF6 still enters the detection box, so that the detection result is not accurate. Comprising a box body which is made of stainless steel, a sliding hole is formed in the side face of the box body, a round hole is formed in the lower end of the side face, provided with the sliding hole, of the box body, the sliding hole is slidably connected with a plugging assembly, and a touch assembly is installed at the round hole. According to the SF6 gas measuring device, due to the arrangement of the plugging assembly, no SF6 enters the box body during detection, the accuracy of SF6 concentration detection is guaranteed, due to the arrangement of the touch assembly, a pipe head can be conveniently in contact with a measuring point, the measuring area is expanded, and then the position of a leakage point is accurately measured.

Description

Technical Field

[0001] The utility model belongs to the technical field of SF6 gas concentration detection, and in particular relates to a SF6 gas measuring device. Background Art

[0002] SF6 (sulfur hexafluoride) gas is used as the insulating medium in AIS / GIS substations due to its excellent dielectric strength properties. SF6 leakage is one of the common problems of power companies that have installed AIS / GIS circuit breakers. Leakage may occur in any part of the circuit breaker, such as valve fittings, bushings and flanges. If SF6 leaks, the pressure in the SF6 chamber will drop rapidly, thereby reducing the arc extinguishing ability. In order to detect whether SF6 is leaking, a gas concentration measuring device is required for measurement.

[0003] Chinese patent CN207832651U discloses a device for measuring SF6 gas concentration, including a detection box, a mounting frame is provided on the inner side wall of one end of the detection box, two mounting rods are symmetrically installed on the inner side wall of the mounting frame, a driving motor is commonly installed on the two mounting rods, a fan blade is installed on the driving end of the driving motor, a ventilation hole is opened on the outer side wall of the detection box close to the fan blade, and a dustproof net is installed inside the ventilation hole.

[0004] The above-mentioned device lacks a mechanism for adjusting the position of the intake pipe. When it is necessary to specifically measure the SF6 leakage point (such as valve accessories, bushings and flanges), the intake pipe needs to be lifted, and when the leakage point is at a higher position, the intake pipe cannot contact the leakage point, resulting in inaccurate measurement of the leakage point position. At the same time, the detection box cannot be sealed after the gas enters the detection box, and SF6 still enters the detection box, resulting in inaccurate detection results. Therefore, a technical measure is proposed to solve the problem of lack of a mechanism for adjusting the position of the intake pipe, the intake pipe cannot contact the leakage point, resulting in inaccurate measurement of the leakage point position, and the detection box cannot be sealed after the gas enters the detection box, and SF6 still enters the detection box, resulting in inaccurate detection results. Utility Model Content

[0005] (1) Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an SF6 gas measuring device, aiming to solve the problem that the prior art lacks a mechanism for adjusting the position of the intake pipe, the intake pipe cannot contact the leakage point, resulting in inaccurate measurement of the leakage point position, and the detection box cannot be sealed after the gas enters the detection box, and SF6 will still enter the detection box, resulting in inaccurate detection results.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides such an SF gas measuring device, including a box body, the box body is made of stainless steel, a sliding hole is opened on the side of the box body, a circular hole is opened at the lower end of the side of the box body with the sliding hole, the sliding hole is slidably connected with a blocking component, a touch component is installed at the circular hole, a signal processor is installed inside the box body, a dual-wavelength NDIR infrared sensor is adjacent to the signal processor, and a display screen is provided on the upper surface of the box body. Thanks to the setting of the blocking component, SF6 will not enter the box body during detection, thereby ensuring the accuracy of SF6 concentration detection. At the same time, thanks to the setting of the touch component, it is convenient to contact the pipe head with the measurement point, thereby facilitating the gas at the measurement point to be transported to the dual-wavelength NDIR infrared sensor in the box body, thereby expanding the measurement area, thereby accurately measuring the position of the leakage point.

[0009] Furthermore, a plurality of groups of evenly distributed mounting blocks are installed on the side of the box body, fixing ropes are installed on the mounting blocks, and Velcro is installed on the fixing ropes.

[0010] Furthermore, a button is provided on the upper surface of the box body, and two groups of symmetrically distributed vertical plates are installed inside the box body. A plug hole is provided on the upper part of the vertical plate, and an air hole is provided at the center of the vertical plate.

[0011] Furthermore, a row of holes is provided on one side of the box body away from the sliding hole, a horizontal plate is installed between the row of holes and the vertical plate, and a fan is installed on the upper surface of the horizontal plate. Thanks to the setting of the fan, it is convenient to draw air into the box body.

[0012] Furthermore, a bottom plate is movably installed at the lower part of the box body, a battery is arranged inside the bottom plate, and bolts are threadedly connected on both sides of the bottom plate. Thanks to the arrangement of the battery, it is convenient to power the display screen, dual-wavelength NDIR infrared sensor, signal processor, and fan.

[0013] Furthermore, the sealing assembly includes a pull rod, which is connected to a connecting rod. The connecting rod is slidably adapted to the sliding hole and the plug hole. A magnetic ring is provided on the outer sleeve of the connecting rod. Two groups of vertical rods are provided at the lower part of the connecting rod. A blocking block is connected to the lower end of the vertical rod, and the blocking block is snap-fitted with the air hole.

[0014] Furthermore, the touch assembly includes a tube body, which is installed on the side of the box body, and the tube body is adapted to the circular hole. The tube body is connected to a telescopic hose, and the telescopic hose is connected to a connecting pipe. The connecting pipe is threadedly movably connected to an intermediate pipe, and the intermediate pipe is threadedly movably connected to a detection tube. A tube head is provided at the end of the detection tube. Thanks to the setting of the telescopic hose, the direction of the tube head can be rotated conveniently, so that the tube head can contact the measuring point conveniently.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model provides a blocking component so that no SF6 can enter the box during detection, thereby ensuring the accuracy of SF6 concentration detection. The pull rod is pulled outward to drive the blocking block to move outward, and the blocking block moves outward to release the blockage of the air hole. When it is necessary to detect the SF6 concentration, the pull rod is pushed inward to drive the blocking block to block the air hole.

[0018] Through the setting of the touch component, it is convenient to contact the tube head with the measuring point, and then to transport the gas at the measuring point to the dual-wavelength NDIR infrared sensor in the box body, expand the measurement area, and then accurately measure the location of the leakage point. Through the setting of the telescopic hose, it is convenient to rotate the direction of the tube head, and the tube head is convenient to contact the measuring point, the intermediate tube and the connecting tube are threadedly connected, and then the detection tube and the intermediate tube are threadedly connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 Schematic diagram of the internal structure of the box;

[0022] Figure 3 It is a schematic diagram of the plugging component structure;

[0023] Figure 4 This is a schematic diagram of the structure of the touch component in the separated state.

[0024] The marks in the attached drawings are: 1. box body; 2. sealing component; 3. touch component; 4. display screen; 5. mounting block; 6. Velcro; 7. button; 8. fixing rope; 9. sliding hole; 10. round hole; 11. air hole; 12. jack; 13. vertical plate; 14. signal processor; 15. dual-wavelength NDIR infrared sensor; 16. battery; 17. bottom plate; 18. bolt; 19. row of holes; 20. horizontal plate; 21. fan; 201. pull rod; 202. magnetic ring; 203. connecting rod; 204. blocking block; 205. vertical rod; 301. pipe body; 302. telescopic hose; 303. connecting pipe; 304. intermediate pipe; 305. detection pipe; 306. pipe head. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This specific implementation is a SF6 gas measurement device, and its structural schematic diagram is as follows Figure 1 , Figure 2 As shown, it includes a box body 1, which is made of stainless steel, a sliding hole 9 is opened on the side of the box body 1, and a round hole 10 is opened at the lower end of the side of the box body 1 with the sliding hole 9, and the sliding hole 9 is slidably connected with a blocking component 2, and a touch component 3 is installed at the round hole 10, a signal processor 14 is installed inside the box body 1, and a dual-wavelength NDIR infrared sensor 15 is adjacent to the signal processor 14, a display screen 4 is provided on the upper surface of the box body 1, and multiple groups of evenly distributed mounting blocks 5 are installed on the side of the box body 1, and a fixing rope 8 is installed on the mounting block 5, and a Velcro is installed on the fixing rope 8 6. A button 7 is provided on the upper surface of the box body 1. Two groups of symmetrically distributed vertical plates 13 are installed inside the box body 1. A plug hole 12 is provided on the upper part of the vertical plate 13. An air hole 11 is provided at the center of the vertical plate 13. A row of holes 19 is provided on the side of the box body 1 away from the sliding hole 9. A horizontal plate 20 is installed between the row of holes 19 and the vertical plate 13. A fan 21 is installed on the upper surface of the horizontal plate 20. A bottom plate 17 is movably installed at the lower part of the box body 1. A battery 16 is provided inside the bottom plate 17. Bolts 18 are threadedly connected on both sides of the bottom plate 17. The fixing rope 8 is fixed to the shoulder of the staff. Use magic The fixing rope 8 is connected to the sticker 6, and then the sealing component 2 is opened to seal the dual-wavelength NDIR infrared sensor 15. The touch component 3 is extended according to the height of the valve fittings, the bushing and the flange, and the touch component 3 is contacted with the measuring point. Then, the fan 21 is controlled to start by the button 7. The fan 21 starts to draw the air at the measuring point into the touch component 3. Then, under the action of the fan 21, the air enters the circular hole 10, and the air enters the box body 1 through the circular hole 10. Then, the air enters the wavelength NDIR infrared sensor through the air hole 11. Then, the sealing component 2 is restored to the original position to seal the dual-wavelength NDIR infrared sensor 15, and then the dual-wavelength NDIR infrared sensor 15 is started to measure the gas concentration. The dual-wavelength NDIR infrared sensor 15 transmits the data to the signal processor 14, and the signal processor 14 transmits the processed signal to the display screen 4. The operator can conveniently observe the concentration of SF6 and determine the leakage point. The device uses the battery 16 to power the display screen 4, the dual-wavelength NDIR infrared sensor 15, the signal processor 14, and the fan 21.

[0027] Reference Figure 1 , Figure 2 , Figure 3 As shown, the blocking assembly 2 includes a pull rod 201, which is connected to a connecting rod 203. The connecting rod 203 is slidably matched with the sliding hole 9 and the plug hole 12. A magnetic ring 202 is provided on the outer sleeve of the connecting rod 203. Two groups of vertical rods 205 are provided at the lower part of the connecting rod 203. The lower end of the vertical rod 205 is connected to a blocking block 204. The blocking block 204 is snap-fitted with the air hole 11. When the pull rod 201 is pulled outward, the pull rod 201 moves outward and drives the connecting rod 203 to move outward. The connecting rod 203 moves outward and drives the magnetic ring 202 and the vertical rod 205 to move outward. The vertical rod 205 moves outward and drives the blocking block 204 to move outward. The blocking block 204 moves outward to release the blockage of the air hole 11.

[0028] Reference Figure 1 , Figure 2 , Figure 4 As shown, the touch component 3 includes a tube body 301, which is installed on the side of the box body 1, and the tube body 301 is adapted to the round hole 10. The tube body 301 is connected to a telescopic hose 302, and the telescopic hose 302 is connected to a connecting tube 303. The connecting tube 303 is threadedly movably connected to an intermediate tube 304, and the intermediate tube 304 is threadedly movably connected to a detection tube 305. A pipe head 306 is provided at the end of the detection tube 305, and the intermediate tube 304 is threadedly connected to the connecting tube 303, and then the detection tube 305 is threadedly connected to the intermediate tube 304.

[0029] Working principle: fix the fixing rope 8 on the shoulder of the staff, connect the fixing rope 8 with Velcro 6, and then open the sealing component 2 to seal the dual-wavelength NDIR infrared sensor 15 (the principle of the dual-wavelength NDIR infrared sensor 15 is that most molecules can absorb infrared light, causing them to bend, stretch or twist. The amount of infrared light absorbed is proportional to the concentration. Each molecule absorbs infrared light of a wavelength representing the type of bond that exists. SF6 has a strong absorbance at 10.7um. The SF6 absorption band is unique and therefore highly selective. The dual-wavelength NDIR infrared sensor 15 can use INFS520P sulfur hexafluoride + oxygen sensor). The specific method is to pull the pull rod 201 outward, and the pull rod 201 moves outward to drive the connecting rod 203 to move outward. The connecting rod 203 moves outward to drive the magnetic ring 202 and the vertical rod 205 to move outward. The vertical rod 205 moves outward to drive the blocking block 204 to move outward. The blocking block 204 moves outward to release the blockage of the pore 11.

[0030] At this time, the touch component 3 is extended, and the corresponding number of intermediate tubes 304 are installed according to the height of the valve fittings, bushings and flanges to ensure that the pipe head 306 is in contact with the detection position, and the intermediate tube 304 is threadedly connected with the connecting tube 303, and then the detection tube 305 is threadedly connected with the intermediate tube 304. Through the setting of the touch component 3, it is convenient to make the pipe head 306 contact with the measuring point, and then accurately measure the position of the leakage point. Through the setting of the telescopic hose 302, it is convenient to rotate the direction of the pipe head 306, so that the pipe head 306 is in contact with the measuring point.

[0031] The pipe head 306 is brought into contact with the measuring point, and then the fan 21 is started by controlling the button 7. The fan 21 starts to draw the air at the measuring point into the touch component 3, and then the air enters the circular hole 10 under the action of the fan 21, and the air enters the box body 1 through the circular hole 10, and then the air enters the wavelength NDIR infrared sensor through the air hole 11, and then the plugging component 2 is restored to the original position to seal the dual-wavelength NDIR infrared sensor 15, and then the dual-wavelength NDIR infrared sensor 15 is started to measure the gas concentration, and the dual-wavelength NDIR infrared sensor 15 transmits the data to the signal processor 14 (the signal processor 14 amplifies the signal of the dual-wavelength NDIR infrared sensor 15, and adjusts the filter box to a form suitable for display on the display screen 4), and the signal processor 14 transmits the signal to the display screen 4 after processing. The operator can conveniently observe the concentration of SF6 and determine the leakage point. Through the setting of the plugging component 2, no SF6 will enter the box body 1 during the detection, thereby ensuring the accuracy of SF6 detection;

[0032] The device supplies power to the display screen 4 , the dual-wavelength NDIR infrared sensor 15 , the signal processor 14 , and the fan 21 through the battery 16 .

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A SF6 gas measuring device, comprising a box body (1), characterized in that: The box body (1) is made of stainless steel, a sliding hole (9) is provided on the side of the box body (1), a circular hole (10) is provided at the lower end of the side of the box body (1) on which the sliding hole (9) is provided, the sliding hole (9) is slidably connected to a blocking component (2), a touch component (3) is installed at the circular hole (10), a signal processor (14) is installed inside the box body (1), a dual-wavelength NDIR infrared sensor (15) is adjacent to the signal processor (14), and a display screen (4) is provided on the upper surface of the box body (1).

2. The SF6 gas measuring device according to claim 1, characterized in that: A plurality of evenly distributed mounting blocks (5) are mounted on the side of the box body (1), a fixing rope (8) is mounted on the mounting block (5), and a Velcro (6) is mounted on the fixing rope (8).

3. The SF6 gas measuring device according to claim 2, characterized in that: The upper surface of the box body (1) is provided with a button (7), and two groups of symmetrically distributed vertical plates (13) are installed inside the box body (1). The upper part of the vertical plates (13) is provided with a plug hole (12), and the center position of the vertical plates (13) is provided with an air hole (11).

4. The SF6 gas measuring device according to claim 3, characterized in that: A row of holes (19) is provided on a side of the box body (1) away from the sliding hole (9), a horizontal plate (20) is installed between the row of holes (19) and the vertical plate (13), and a fan (21) is installed on the upper surface of the horizontal plate (20).

5. The SF6 gas measuring device according to claim 4, characterized in that: A bottom plate (17) is movably mounted at the lower part of the box body (1), a storage battery (16) is arranged inside the bottom plate (17), and bolts (18) are threadedly connected on both sides of the bottom plate (17).

6. The SF6 gas measuring device according to claim 5, characterized in that: The blocking assembly (2) comprises a pull rod (201), the pull rod (201) is connected to a connecting rod (203), the connecting rod (203) is slidably matched with the sliding hole (9) and the plug hole (12), a magnetic ring (202) is provided on the outer sleeve of the connecting rod (203), two groups of vertical rods (205) are provided at the lower part of the connecting rod (203), the lower end of the vertical rod (205) is connected to a blocking block (204), and the blocking block (204) is snap-fitted with the air hole (11).

7. The SF6 gas measuring device according to claim 6, characterized in that: The touch assembly (3) comprises a tube body (301), the tube body (301) is mounted on the side of the box body (1), the tube body (301) is adapted to the round hole (10), the tube body (301) is connected to a telescopic hose (302), the telescopic hose (302) is connected to a connecting tube (303), the connecting tube (303) is threadedly movably connected to an intermediate tube (304), the intermediate tube (304) is threadedly movably connected to a detection tube (305), and a tube head (306) is provided at the end of the detection tube (305).

Images