SF6 gas detection device and use method thereof

Abstract

The invention belongs to the technical field of detection, and discloses an SF6 gas detection device and a use method thereof. The SF6 gas detection device comprises a handheld mounting mechanism, a telescopic gas guide mechanism and a detection mechanism, the handheld mounting mechanism comprises a mounting shell connected with the handheld mounting mechanism, and a mounting space is formed in the mounting shell; the telescopic air guide mechanism comprises a sealing upper cover, an air guide hose and a telescopic assembly, the sealing upper cover is detachably connected to one end of the mounting shell, the air guide hose is connected to the sealing upper cover and communicates with the mounting space, and one end of the telescopic assembly is connected to the sealing upper cover and telescopically surrounds the periphery of the air guide hose; the detection mechanism is installed in the installation space and comprises an air pump and a detection assembly, the air pump is configured to pump air into the installation space through the air guide hose, and the detection assembly is configured to detect the concentration of the air. According to the SF6 gas detection device and the use method, the SF6 gas detection device can extend into different to-be-detected spaces, the gas pump exhausts gas through the gas guide hose, and the use range is wider.

Description

Technical Field

[0001] The present invention relates to the field of detection technology, and in particular to a SF6 gas detection device and a use method thereof. Background Art

[0002] SF6 is a colorless, toxic, flammable gas, whose main components are a substance formed by the combination of sulfur and six fluorine atoms. Its density is much greater than that of air. SF6 is extremely stable and not easily hydrolyzed. It has extremely high insulation properties and arc extinguishing capabilities. In high-voltage devices, such as substations and distribution rooms, high-voltage electrical signals need to be isolated from the external environment to ensure the normal operation of the device and personal safety. SF6 can play a very important insulating role. High concentrations of SF6 can cause varying degrees of harm to the human body, such as nausea, vomiting, headache, insomnia, fatigue, etc. In severe cases, it may even lead to death.

[0003] The existing SF6 gas detection cannot effectively reach into the complex space to be detected for gas extraction detection, and is not convenient for portable use.

[0004] Therefore, there is an urgent need to design an SF6 gas detection device and a method of using the same to solve the above problems. Summary of the invention

[0005] One object of the present invention is to provide a SF6 gas detection device to solve the above-mentioned problem that when detecting SF6 gas, it is impossible to effectively extend it into a complex space to be detected for gas extraction detection, and it is not convenient for portable use.

[0006] Another object of the present invention is to provide a method for using an SF6 gas detection device. By adopting the above-mentioned SF6 gas detection device, it is possible to effectively extend into a complex space to be detected to perform gas extraction detection, and the problem of being inconvenient for portable use can be solved.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] SF6 gas detection device, including:

[0009] The handheld installation mechanism comprises a connected installation shell, wherein an installation space is formed in the installation shell;

[0010] The telescopic air guide mechanism comprises a sealing upper cover, an air guide hose and a telescopic assembly, wherein the sealing upper cover is detachably connected to one end of the mounting housing, the air guide hose is connected to the sealing upper cover and communicates with the mounting space, and one end of the telescopic assembly is connected to the sealing upper cover and is telescopically arranged around the outer periphery of the air guide hose;

[0011] The detection mechanism is installed in the above-mentioned installation space. The above-mentioned detection mechanism includes an air pump and a detection component. The above-mentioned air pump is configured to draw gas from the above-mentioned air guide hose into the above-mentioned installation space, and the detection component is configured to detect the concentration of the above-mentioned gas.

[0012] As an optional solution, the telescopic assembly includes a plurality of telescopic cylinders, the diameters of the plurality of telescopic cylinders increase successively from the inside to the outside, and the outermost telescopic cylinder is fixedly connected to the sealing upper cover.

[0013] As an optional solution, the telescopic air guide mechanism further includes a connecting ring, the connecting ring is connected to the sealing upper cover via screws, and the air guide hose is threadedly connected to the inner wall of the connecting ring.

[0014] As an optional solution, the SF6 gas detection device further includes a dehumidification gas transmission mechanism, and the dehumidification gas transmission mechanism includes:

[0015] An air intake baffle is installed in the installation shell and spaced apart from the sealing upper cover, and a first air hole is provided on the air intake baffle;

[0016] A support assembly is installed in the installation housing and spaced apart from the air intake baffle, the support assembly being located on a side of the air intake baffle away from the sealing upper cover;

[0017] A dehumidification component is connected to the support component, and the air inlet of the dehumidification component is directly opposite to the first air hole;

[0018] The central air guide seat is connected to the supporting assembly. The central air guide seat is hollow inside and communicates with the air pump. A second air hole is provided on the central air guide seat. The second air hole is directly opposite to the air outlet of the dehumidification assembly.

[0019] As an optional solution, the above-mentioned support assembly includes:

[0020] A supporting partition is installed inside the above-mentioned installation shell;

[0021] A guide plate is installed on the upper side of the supporting baffle, a guide hole is provided in the middle of the guide plate, the central air guide seat penetrates the guide hole and is connected to the supporting baffle and communicates with the air pump;

[0022] A transmission gear ring, slidingly matched with the side wall of the guide hole;

[0023] The dehumidification gas transmission mechanism further comprises a driving member, the driving member is mounted on the supporting baffle, the output end of the driving member is connected with a gear, and the gear is meshed with the inner side of the transmission gear ring;

[0024] The above-mentioned dehumidification components are provided in plurality, and the plurality of the above-mentioned dehumidification components are arranged in sequence at intervals and are all connected to the above-mentioned transmission gear ring. The above-mentioned driving member can drive the above-mentioned transmission gear ring to slide along the inner side of the above-mentioned guide hole so that the air outlet of any of the above-mentioned dehumidification components can be opposite to the above-mentioned second air hole.

[0025] As an optional solution, a guide groove is opened on the upper side of the guide plate, the guide hole is opened at the bottom of the guide groove, the bottom of the dehumidification component installed on the transmission gear ring is supported by the bottom of the guide groove, and the peripheral wall of the dehumidification component is limited to the groove wall of the guide groove.

[0026] As an optional solution, the above-mentioned testing organization also includes:

[0027] A breathable baffle is installed inside the installation shell and located at the lower side of the support assembly. The breathable baffle is provided with a plurality of breathable holes. The space between the breathable baffle and the support assembly is connected to the outside.

[0028] The cover body, the movable plug seat and the elastic member, part of the air pump is located between the breathable partition and the cover body, the air outlet of the air pump is connected to the inside of the cover body, the elastic member is located between the movable plug seat and the bottom of the mounting shell, so that the movable plug seat blocks the cover body, and the detection component is configured to detect the concentration of the gas in the cover body.

[0029] As an optional solution, the cover body is a reflector, an infrared emitting head is arranged inside the reflector, and the detection component is an image acquisition seat.

[0030] As an optional solution, the support assembly and the breathable baffle are connected via a vertical air guide sleeve, and the air inlet of the air pump extends into the vertical air guide sleeve.

[0031] The method for using the SF6 gas detection device is to use the above-mentioned SF6 gas detection device for detection. The method for using the above-mentioned SF6 gas detection device includes:

[0032] S10: Connect the sealing upper cover to the upper end of the mounting housing, slide and stretch the telescopic assembly, convert the air guide hose into a soft and hard state, and extend the air guide hose into the space to be tested;

[0033] S20: Start the air pump to allow gas to enter the installation space, and start the detection component to detect the concentration of the gas.

[0034] The beneficial effects of the present invention are:

[0035] The present invention provides an SF6 gas detection device. A telescopic component is arranged outside a gas guide hose, and the telescopic component is slid and stretched so that the telescopic component can guide and support the gas guide hose, thereby facilitating the soft-hard conversion of the gas guide hose, so that the gas guide hose can be extended into different spaces to be detected. An air pump extracts gas through the gas guide hose, and the application range is wider.

[0036] The present invention also provides a method for using the SF6 gas detection device. By adopting the above-mentioned SF6 gas detection device, it is possible to effectively extend into a complex space to be detected to perform gas extraction detection, and the problem of being inconvenient for portable use can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic cross-sectional structure diagram of the present invention as a whole;

[0039] Figure 3 It is a partial cross-sectional structural schematic diagram of the telescopic air guide mechanism of the present invention;

[0040] Figure 4 It is a schematic cross-sectional structure diagram of the handheld mounting mechanism of the present invention;

[0041] Figure 5 It is a schematic diagram of the installation structure of the infrared detection mechanism of the present invention;

[0042] Figure 6 It is a schematic cross-sectional structure diagram of the dehumidification gas transmission mechanism of the present invention;

[0043] Figure 7 It is a schematic diagram of the cross-sectional structure of the central air guide seat of the present invention.

[0044] In the figure:

[0045] 1. Handheld installation mechanism; 101. Installation housing; 102. Sealed bottom cover; 103. Handle; 104. Display screen; 105. Ventilation seat; 106. Device installation box; 107. Battery pack;

[0046] 2. telescopic air guide mechanism; 201. sealing upper cover; 2011. through hole; 202. telescopic assembly; 2021. telescopic cylinder; 203. air guide hose; 204. filter cover; 205. connecting ring;

[0047] 3. Dehumidification gas transmission mechanism; 301. Air intake baffle; 302. Support assembly; 3021. Support baffle; 3022. Guide plate; 30221. Guide hole; 30222. Guide groove; 3023. Transmission gear ring; 303. Center air guide seat; 304. Driving member; 305. Dehumidification assembly; 3051. Movable dehumidification sleeve; 3052. Breathable sheet; 3053. Dehumidification filter element; 310. Second air hole;

[0048] 4. Detection mechanism; 401. Vertical air guide sleeve; 402. Air pump; 403. Breathable baffle; 404. Sealing tank; 405. Cover body; 406. Movable plug seat; 407. Detection assembly; 408. Infrared transmitter; 409. Elastic member. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0050] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0052] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0053] This embodiment provides a SF6 gas detection device that can be inserted into different complex spaces to be detected for gas extraction detection, and is convenient for portable use. Figure 1-Figure 3 As shown, the SF6 gas detection device includes a handheld mounting mechanism 1, a telescopic gas guide mechanism 2 and a detection mechanism 4. The handheld mounting mechanism 1 includes a mounting shell 101, and a mounting space is formed in the mounting shell 101; the telescopic gas guide mechanism 2 includes a sealed upper cover 201, a gas guide hose 203 and a telescopic component 202, the sealed upper cover 201 is detachably connected to one end of the mounting shell 101, the gas guide hose 203 is connected to the sealed upper cover 201 and communicates with the mounting space, one end of the telescopic component 202 is connected to the sealed upper cover 201 and is telescopically arranged around the outer periphery of the gas guide hose 203; the detection mechanism 4 is installed in the mounting space, the detection mechanism 4 includes an air pump 402 and a detection component 407, the air pump 402 is configured to extract gas so that the gas enters the mounting space from the gas guide hose 203, and the detection component 407 is configured to detect the concentration of the gas.

[0054] The SF6 gas detection device, by arranging a telescopic component 202 outside the gas guide hose 203, slides and stretches the telescopic component 202, so that the telescopic component 202 can guide and support the gas guide hose 203, and is convenient for converting the gas guide hose 203 from soft to hard, so that it can be extended into different spaces to be detected. The air pump 402 extracts air through the gas guide hose 203, and has a wider range of use.

[0055] Optionally, a filter cover 204 is installed at the head of the air guide hose 203 to prevent impurities from being drawn into the air pump 402 and causing damage to the air pump 402 .

[0056] Alternatively, if Figure 3 As shown, the telescopic assembly 202 includes a plurality of telescopic cylinders 2021, the diameters of which increase from the inside to the outside, and the outermost telescopic cylinder 2021 is fixedly connected to the sealing upper cover 201. The telescopic function of the telescopic assembly 202 is realized by the mutual sleeve connection of the plurality of telescopic cylinders 2021. Among them, the cross section of the outermost telescopic cylinder 2021 is L-shaped, and the cross sections of the remaining telescopic cylinders 2021 are Z-shaped. Thus, when the inner telescopic cylinder 2021 slides to the farthest position, it can be limited on the end face of the outer telescopic cylinder 2021 adjacent thereto to prevent the telescopic cylinder 2021 from falling off.

[0057] Alternatively, if Figure 3 As shown, the telescopic air guide mechanism 2 also includes a connecting ring 205, which is connected to the sealing upper cover 201 by screws, and the air guide hose 203 is threadedly connected to the inner wall of the connecting ring 205. When installing the air guide hose 203, the sealing upper cover 201 is a separate component, which has a through hole 2011 ( Figure 4 Indicated in the middle), the connecting ring 205 is penetrated with a through hole 2011, the flange edge of the connecting ring 205 is connected to the sealing upper cover 201 by screws, and the air guide hose 203 is connected to the connecting ring 205 by threads. In this way, the connection of the air guide hose 203 is more reliable.

[0058] Alternatively, if Figure 3 As shown, the connecting ring 205 includes a protrusion protruding from the flange edge, the protrusion is ring-shaped, and the air guide hose 203 is threadedly connected to the inner wall of the protrusion, so that the connection between the two has a certain height and sufficient connection strength.

[0059] Alternatively, if Figure 3 As shown, the circumferential side of the protrusion is spaced apart from the inner side of the through hole 2011, and the protrusion is arranged in a stepped shape, whereby the space between the circumferential side of the protrusion and the inner side of the through hole 2011 can accommodate the two outermost telescopic cylinders 2021, and each stepped surface accommodates a telescopic cylinder 2021, making the installation and limiting of the telescopic assembly 202 more convenient.

[0060] Alternatively, if Figure 3 As shown, the outermost telescopic cylinder 2021 is locked with the flange edge by screws, so that the flange edge can be connected to both the sealing upper cover 201 and the outermost telescopic cylinder 2021 .

[0061] Alternatively, if Figure 1 As shown, a display screen 104 is fixedly mounted on the front face of the mounting housing 101 , and the dehumidification amount, gas extraction amount and SF6 gas concentration can be displayed through the display screen 104 .

[0062] Specifically, see Figure 4 Two battery blocks 107 are fixedly installed on the inner side of the middle part of the mounting shell 101. Through the processor provided on the inner side of the device mounting box 106, the battery block 107 is used to power the air pump 402 and the electrical components installed in the device mounting box 106. The processor displays the measured gas concentration and other information on the display screen 104. Its principle and circuit connection method belong to the conventional electrical settings and will not be elaborated here.

[0063] Optionally, the handheld installation mechanism 1 further includes a handle 103 , which is connected to the installation shell 101 , so that a person can hold the handle 103 tightly, extend the installation shell 101 , and then extend the air guide hose 203 into the space to be tested.

[0064] Due to the changeable environment of the space to be tested and the high humidity in the air, it has been found through long-term operation that the humidity in the air will affect the final gas detection concentration value. After the SF6 gas detection device detects, if the value is inaccurate, there will still be safety hazards.

[0065] In order to solve the above problems, Figure 4-Figure 7 As shown, the SF6 gas detection device of this embodiment also includes a dehumidification gas transmission mechanism 3, which includes an air intake baffle 301, a support assembly 302, a dehumidification assembly 305 and a central air guide seat 303. The air intake baffle 301 is installed in the installation shell 101 and is spaced apart from the sealing upper cover 201. The air intake baffle 301 is provided with a first air hole (not shown in the figure); the support assembly 302 is installed in the installation shell 101 and is spaced apart from the air intake baffle 301. The support assembly 302 is arranged on the side of the air inlet baffle 301 away from the sealing upper cover 201; the dehumidification assembly 305 is connected to the support assembly 302, and the air inlet of the dehumidification assembly 305 is opposite to the first air hole; the central air guide seat 303 is connected to the support assembly 302, the central air guide seat 303 is hollow inside and is connected to the air pump 402, and the central air guide seat 303 is provided with a second air hole 310, and the second air hole 310 is opposite to the air outlet of the dehumidification assembly 305. Through the above arrangement, under the action of the suction of the air pump 402, the gas first passes through the through hole 2011 into the space between the sealing upper cover 201 and the air intake baffle 301, and then passes through the first air hole, and then passes through the dehumidification component 305 to dehumidify the gas, and then passes through the central air guide seat 303 to reach the position corresponding to the detection component 407 in the installation space, and then the detection component 407 detects the concentration of the gas. In other words, the gas detected by the detection component 407 is dried gas, and the detection result is more accurate.

[0066] Since the dehumidification volume of the dehumidification component 305 is limited, it is cumbersome to frequently replace the dehumidification component 305. In order to solve the above problem, Figure 4-Figure 7As shown, the support assembly 302 includes a support baffle 3021, a guide plate 3022 and a transmission gear ring 3023. The support baffle 3021 is installed inside the installation shell 101; the guide plate 3022 is installed on the upper side of the support baffle 3021, and a guide hole 30221 is opened in the middle of the guide plate 3022. The central air guide seat 303 is penetrated by the guide hole 30221 and connected to the support baffle 3021 and communicated with the air pump 402; the transmission gear ring 3023 is slidably matched with the side wall of the guide hole 30221; the dehumidification The gas transmission mechanism 3 also includes a driving member 304, which is installed on the supporting partition 3021. The output end of the driving member 304 is connected to a gear, which meshes with the inner side of the transmission ring gear 3023. There are multiple dehumidification components 305, and the multiple dehumidification components 305 are arranged in sequence at intervals and are all connected to the transmission ring gear 3023. The driving member 304 can drive the transmission ring gear 3023 to slide along the inner side of the guide hole 30221 so that the air outlet of any dehumidification component 305 can be opposite to the second air hole 310.

[0067] The gear is driven to rotate by the driving member 304, and the gear drives the transmission ring gear 3023 to slide along the side wall of the guide hole 30221, thereby driving multiple dehumidification components 305 to transmit clockwise or counterclockwise, so that the dehumidification component 305 connected to the central air guide seat 303 can be replaced, thereby facilitating the maintenance of the dehumidification effect of the dehumidification gas transmission mechanism 3. By removing the sealing upper cover 201 and the installation shell 101, the dehumidification component 305 can be replaced easily. It is understandable that during use, the dehumidification volume of a dehumidification component 305 is roughly known. When the gas extracted by the air pump 402 reaches a certain value, it means that the dehumidification capacity of the dehumidification component 305 is insufficient. The driving member 304 drives the gear to rotate so that an adjacent dehumidification component 305 is connected to the central air guide seat 303. For example, there are eleven dehumidification components 305 evenly spaced. After the driving member 304 is driven ten times, when the dehumidification gas volume of the last dehumidification component 305 is reached, the operator will be prompted to replace the dehumidification component 305. The operator opens the sealing cover 201 and removes the air intake baffle 301 to replace multiple dehumidification components 305 at one time, which prolongs the time for replacing the dehumidification component 305. In other words, the dehumidification component 305 can be used for a longer time before replacement. It should be noted that the above communication function is realized by the electrical components mentioned above, etc., which will not be elaborated here.

[0068] Alternatively, if Figure 5-Figure 7As shown, a guide groove 30222 is provided on the upper side of the guide plate 3022, a guide hole 30221 is provided at the bottom of the guide groove 30222, the bottom of the dehumidification assembly 305 mounted on the transmission gear ring 3023 is supported on the bottom of the guide groove 30222, and the peripheral wall of the dehumidification assembly 305 is limited by the groove wall of the guide groove 30222. Through the above arrangement, the groove bottom and groove wall of the guide groove 30222 respectively limit the bottom and side wall of the dehumidification assembly 305, which, on the one hand, plays an auxiliary supporting role for the dehumidification assembly 305, and on the other hand, prevents the dehumidification assembly 305 from being skewed.

[0069] In this embodiment, the guide groove 30222 and the guide hole 30221 are both waist-shaped. In other embodiments, the shapes of the guide groove 30222 and the guide hole 30221 can also be circular or elliptical, which is not limited here.

[0070] Alternatively, if Figure 5-Figure 7 As shown, the dehumidification component 305 includes a movable dehumidification sleeve 3051, a breathable sheet 3052 and a dehumidification filter element 3053. The movable dehumidification sleeve 3051 is connected to the transmission gear ring 3023, the dehumidification filter element 3053 is installed inside the movable dehumidification sleeve 3051, and the breathable sheet 3052 is detachably covered on the opening of the movable dehumidification sleeve 3051. The breathable sheet 3052 can be opposite to the first air hole. It can be understood that the breathable sheet 3052 is the air inlet of the dehumidification component 305, and the air outlet of the dehumidification component 305 is opened at the bottom of the side wall of the movable dehumidification sleeve 3051, so that the air outlet of the dehumidification component 305 can be opposite to the second air hole 310 of the central air guide seat 303.

[0071] Optionally, the movable dehumidification sleeve 3051 is snap-connected with the transmission ring gear 3023 to facilitate quick disassembly. It can be understood that when replacing the dehumidification component 305, you can choose to remove the movable dehumidification sleeve 3051 from the transmission ring gear 3023 and replace the entire dehumidification component 305, or open the breathable sheet 3052, take out the dehumidification filter element 3053, and replace the dehumidification filter element 3053.

[0072] Optionally, the breathable sheet 3052 is slidably fitted with the air inlet baffle 301. It can be understood that due to the high height of the movable dehumidification sleeve 3051, both ends of the height are slidably fitted to prevent the entire dehumidification assembly 305 from being deflected.

[0073] Exemplarily, one of the air-permeable sheet 3052 and the air-intake baffle 301 is provided with a protrusion, and the other is provided with a groove, and the protrusion can slide in the groove to achieve sliding fit between the air-permeable sheet 3052 and the air-intake baffle 301 .

[0074] Alternatively, if Figure 4 and Figure 5As shown, the detection mechanism 4 also includes a breathable baffle 403, a cover body 405, a movable blocking seat 406 and an elastic member 409. The breathable baffle 403 is installed inside the mounting shell 101 and is located at the lower side of the support assembly 302. The breathable baffle 403 is provided with a plurality of breathable holes, and the space between the breathable baffle 403 and the support assembly 302 is connected to the outside; a part of the air pump 402 is located between the breathable baffle 403 and the cover body 405, and the air outlet of the air pump 402 is connected to the inside of the cover body 405. The elastic member 409 is located between the movable blocking seat 406 and the bottom of the mounting shell 101, so that the movable blocking seat 406 blocks the cover body 405, and the detection assembly 407 is configured to detect the concentration of the gas in the cover body 405. Through the above arrangement, the gas finally enters the cover body 405 under the suction of the air pump 402. Each time the gas is extracted, the air pump 402 sets a preset time to stop the extraction, so as to facilitate the detection component 407 to perform centralized detection of the gas. When the detection point is changed, the concentration of SF6 will be different due to the different detection points. The previous gas must be completely discharged to prevent the mixing of the two gases from affecting the detection results. At this time, the SF6 gas detection device is placed in the air, and the air pump 402 continues to extract gas. When the gas pressure in the air pump 402 is sufficient to counteract the elasticity of the elastic member 409, The movable plugging seat 406 is pushed open by the force, and the gas overflows from the gap between the movable plugging seat 406 and the cover body 405, then overflows from the air holes of the breathable partition 403, and finally overflows into the external space. After the air pump 402 stops working, the elastic force of the elastic member 409 presses the movable plugging seat 406 so that the movable plugging seat 406 seals the cover body 405, and the next air extraction and detection can be carried out to ensure the reliability of each air extraction result; at the same time, the movable plugging seat 406 can automatically seal the cover body 405 to prevent dust from entering the interior of the cover body 405 and affecting the detection accuracy.

[0075] Optionally, the driving member 304 and the battery block 107 are installed between the breathable partition 403 and the supporting partition 3021, and the device mounting box 106 is installed between the breathable partition 403 and the bottom plate of the mounting shell 101, that is, the sealed bottom cover 102. Of course, the positions of the two can also be interchanged. The handheld mounting mechanism 1 also includes a ventilation seat 105, which is connected to the interior of the installation and is located between the breathable partition 403 and the supporting partition 3021 and is arranged adjacent to the supporting partition 3021. Through the above arrangement, when the gas is discharged, the gas passes through the space between the breathable partition 403 and the sealed bottom cover 102 from bottom to top, and then passes through the space between the breathable partition 403 and the supporting partition 3021 from bottom to top, and then enters the external space from the ventilation seat 105. The gas flow takes away the heat of the battery block 107, electrical components and the driving member 304, thereby playing a role in ventilation and heat dissipation.

[0076] The driving member 304 (exemplarily, the model is SC-25GA300) and the air pump 402 (exemplarily, the model is ADP40DC) mentioned in this embodiment can be purchased from the market or obtained through private customization.

[0077] Optionally, the cover body 405 is a reflector, an infrared emitting head 408 is arranged inside the reflector, and the detection component 407 is an image acquisition seat. The extracted gas is irradiated with infrared light by the infrared emitting head 408, and the image acquisition seat is used to collect images of the irradiation process, and the processor provided inside the device installation box 106 processes information data, and the content of SF6 gas is detected according to the infrared spectrum absorption technology, and the measured gas content is accurate.

[0078] Alternatively, if Figure 4 and Figure 5 As shown, the support assembly 302 and the air permeable baffle 403 are connected through a vertical air guide sleeve 401, and the air inlet of the air pump 402 extends into the vertical air guide sleeve 401. The vertical air guide sleeve 401 plays a role of both conduction and support.

[0079] Optionally, the detection mechanism 4 also includes a sealing tank 404, which is covered on the outside of the air pump 402 and the cover body 405, and the movable blocking seat 406 simultaneously blocks the sealing tank 404. Through the above arrangement, the electrical components are separated from the gas, preventing the electrical components from being in the gas environment for a long time and affecting the life of the electrical components.

[0080] This embodiment also provides a method for using an SF6 gas detection device, using the above-mentioned SF6 gas detection device for detection, and the method for using the SF6 gas detection device includes:

[0081] S10: Connect the sealing upper cover 201 to the upper end of the mounting housing 101, slide and stretch the telescopic assembly 202, convert the air guide hose 203 from soft to hard, and extend the air guide hose 203 into the space to be tested;

[0082] S20: Start the air pump 402, the gas enters the installation space, and start the detection component 407 to detect the concentration of the gas.

[0083] The method for using the SF6 gas detection device can effectively extend into a complex space to be detected to perform gas extraction detection by adopting the above-mentioned SF6 gas detection device, thereby solving the problem of being inconvenient for portable use.

[0084] Specifically, the detailed usage of the SF6 gas detection device is as follows:

[0085] S1: The sealing upper cover 201 is fixedly connected to the upper end of the mounting housing 101, and the power is turned on. The multiple telescopic cylinders 2021 are composed of multiple hard sleeves, and the diameters of the multiple hard sleeves are increased from the inside to the outside. By sliding and stretching the multiple hard sleeves, the multi-section telescopic cylinders 2021 can guide and support the air guide hose 203, and the head of the air guide hose 203 is extended into the space to be detected;

[0086] S2: Start the air pump 402 to pump air, and then the air guide hose 203 filters the air in the filter cover 204 and then transports it to between the sealing upper cover 201 and the air intake baffle 301. The air passes through the first air hole and then through the air permeable sheet 3052 to the inner side of the movable dehumidification sleeve 3051 to realize the dehumidification filter element 3053 to dehumidify the air;

[0087] S3: The gas enters the second air hole 310 of the central air guide seat 303 from the air outlet of the movable dehumidification sleeve 3051, and then passes through the interior of the central air guide seat 303 to the vertical air guide sleeve 401, and then the air is guided to the interior of the cover body 405, and the extracted gas is irradiated with infrared light by the infrared emission head 408, and the image of the irradiation process is collected by the detection component 407, and the information data is processed by the processor provided in the device installation box 106, and the content of SF6 gas is detected according to the infrared spectrum absorption technology;

[0088] When performing your next test, follow these steps:

[0089] S4: Start the air pump 402, and the air pump 402 continues to pump air. When the gas pressure in the air pump 402 is sufficient to counteract the elastic force of the elastic member 409, the movable plugging seat 406 is pushed open, and the gas overflows from the gap between the movable plugging seat 406 and the cover body 405, and then overflows from the air holes of the air-permeable partition 403, and then overflows into the external space. After the air pump 402 stops working, the elastic force of the elastic member 409 presses the movable plugging seat 406 so that the movable plugging seat 406 seals the cover body 405, and S2 and S3 can be operated again;

[0090] When the dehumidification capacity of one of the dehumidification components 305 is insufficient, the following steps are implemented:

[0091] S5: Start the driving member 304, so that the driving member 304 drives the multiple movable dehumidification sleeves 3051 to transmit clockwise or counterclockwise through the gears and the waist-shaped transmission gear ring 3023 under the support of the supporting partition 3021, and then replaces the movable dehumidification sleeves 3051 connected to the central air guide seat 303. The dehumidification volume of the SF6 gas detection device is expanded, and the time for replacing the dehumidification assembly 305 is extended.

[0092] When the dehumidification capacity of the multiple dehumidification components 305 is insufficient, the following steps are implemented:

[0093] S6: Open the sealed upper cover 201, remove the multiple movable dehumidification sleeves 3051 from the transmission gear ring 3023 in sequence, then install new dehumidification components 305 in sequence, and then install the sealed upper cover 201 back in place; or

[0094] S7: Open the sealed upper cover 201, remove the plurality of air-permeable sheets 3052 from the corresponding movable dehumidification sleeves 3051 in turn, take out the plurality of dehumidification filter elements 3053 in turn, replace the new dehumidification filter elements 3053, install the plurality of air-permeable sheets 3052 on the corresponding movable dehumidification sleeves 3051, and then put the sealed upper cover 201 back in place. This facilitates the replacement of the dehumidification assembly 305.

[0095] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. SF6 gas detection device, characterized in that, include: A handheld installation mechanism (1) comprises an installation shell (101), wherein an installation space is formed in the installation shell (101); The telescopic air guide mechanism (2) comprises a sealing upper cover (201), an air guide hose (203) and a telescopic assembly (202), wherein the sealing upper cover (201) is detachably connected to one end of the installation housing (101), the air guide hose (203) is connected to the sealing upper cover (201) and communicates with the installation space, and one end of the telescopic assembly (202) is connected to the sealing upper cover (201) and is telescopically arranged around the outer periphery of the air guide hose (203); A detection mechanism (4) is installed in the installation space, the detection mechanism (4) comprising an air pump (402) and a detection component (407), the air pump (402) being configured to extract gas so that the gas enters the installation space from the air guide hose (203), and the detection component (407) being configured to detect the concentration of the gas.

2. The SF6 gas detection device according to claim 1, characterized in that: The telescopic assembly (202) comprises a plurality of telescopic cylinders (2021), the diameters of the plurality of telescopic cylinders (2021) increasing in sequence from the inside to the outside, and the outermost telescopic cylinder (2021) is fixedly connected to the sealing upper cover (201).

3. The SF6 gas detection device according to claim 1, characterized in that: The telescopic air guide mechanism (2) further comprises a connecting ring (205), wherein the connecting ring (205) is connected to the sealing upper cover (201) via screws, and the air guide hose (203) is threadedly connected to the inner wall of the connecting ring (205).

4. The SF6 gas detection device according to any one of claims 1 to 3, characterized in that: The SF6 gas detection device further comprises a dehumidification gas transmission mechanism (3), wherein the dehumidification gas transmission mechanism (3) comprises: An air intake baffle (301) is installed in the installation housing (101) and is spaced apart from the sealing upper cover (201), and a first air passage hole is provided on the air intake baffle (301); a support assembly (302) installed in the installation housing (101) and spaced apart from the air intake baffle (301), the support assembly (302) being located on a side of the air intake baffle (301) away from the sealing upper cover (201); A dehumidification component (305) is connected to the support component (302), and the air inlet of the dehumidification component (305) is directly opposite to the first air hole; The central air guide seat (303) is connected to the support assembly (302). The central air guide seat (303) is hollow inside and is connected to the air pump (402). A second air hole (310) is provided on the central air guide seat (303). The second air hole (310) is directly opposite to the air outlet of the dehumidification assembly (305).

5. The SF6 gas detection device according to claim 4, characterized in that: The support assembly (302) comprises: A supporting partition (3021) is installed inside the installation housing (101); A guide plate (3022) is installed on the upper side of the supporting baffle (3021), a guide hole (30221) is provided in the middle of the guide plate (3022), the central air guide seat (303) is penetrated by the guide hole (30221), is connected to the supporting baffle (3021), and is in communication with the air pump (402); A transmission gear ring (3023) slidingly cooperates with the side wall of the guide hole (30221); The dehumidification gas transmission mechanism (3) further comprises a driving member (304), wherein the driving member (304) is mounted on the supporting partition (3021), and an output end of the driving member (304) is connected to a gear, and the gear is meshed with the inner side of the transmission gear ring (3023); The dehumidification components (305) are provided in plurality, and the plurality of dehumidification components (305) are arranged in sequence at intervals and are all connected to the transmission gear ring (3023). The driving member (304) can drive the transmission gear ring (3023) to slide along the inner side of the guide hole (30221) so that the air outlet of any dehumidification component (305) can be directly opposite to the second air hole (310).

6. The SF6 gas detection device according to claim 5, characterized in that: A guide groove (30222) is provided on the upper side of the guide plate (3022), and the guide hole (30221) is provided at the bottom of the guide groove (30222). The bottom of the dehumidification component (305) mounted on the transmission gear ring (3023) is supported on the bottom of the guide groove (30222), and the peripheral wall of the dehumidification component (305) is limited to the groove wall of the guide groove (30222).

7. The SF6 gas detection device according to claim 4, characterized in that: The detection mechanism (4) further comprises: A breathable baffle (403) is installed inside the installation shell (101) and is located at the lower side of the support assembly (302); the breathable baffle (403) is provided with a plurality of breathable holes, and the space between the breathable baffle (403) and the support assembly (302) is connected to the outside; A cover body (405), a movable blocking seat (406) and an elastic member (409), part of the air pump (402) is located between the breathable partition (403) and the cover body (405), the air outlet of the air pump (402) is connected to the inside of the cover body (405), the elastic member (409) is located between the movable blocking seat (406) and the bottom of the mounting shell (101), so that the movable blocking seat (406) blocks the cover body (405), and the detection component (407) is configured to detect the concentration of the gas in the cover body (405).

8. The SF6 gas detection device according to claim 7, characterized in that: The cover body (405) is a reflector, an infrared emitting head (408) is arranged inside the reflector, and the detection component (407) is an image acquisition seat (407).

9. The SF6 gas detection device according to claim 7, characterized in that: The support assembly (302) and the air-permeable baffle (403) are connected via a vertical air guide sleeve (401), and an air inlet of the air pump (402) extends into the vertical air guide sleeve (401).

10. A method for using the SF6 gas detection device, characterized in that: The SF6 gas detection device according to any one of claims 1 to 9 is used for detection, and the method for using the SF6 gas detection device includes: S10: connecting the sealing upper cover (201) to the upper end of the mounting housing (101), sliding and stretching the telescopic assembly (202), converting the air guide hose (203) from soft to hard, and extending the air guide hose (203) into the space to be tested; S20: Start the air pump (402), gas enters the installation space, and start the detection component (407) to detect the concentration of the gas.

Images