CN207528621U - A kind of on-Line Monitor Device for the detection of electrical equipment HF gases - Google Patents
A kind of on-Line Monitor Device for the detection of electrical equipment HF gases Download PDFInfo
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- CN207528621U CN207528621U CN201721720191.4U CN201721720191U CN207528621U CN 207528621 U CN207528621 U CN 207528621U CN 201721720191 U CN201721720191 U CN 201721720191U CN 207528621 U CN207528621 U CN 207528621U
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- collimator
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- 239000007789 gas Substances 0.000 title claims abstract description 104
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 239000013307 optical fiber Substances 0.000 claims abstract description 83
- 230000003287 optical effect Effects 0.000 claims abstract description 25
- 238000012545 processing Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 241000233855 Orchidaceae Species 0.000 claims 1
- 230000005611 electricity Effects 0.000 claims 1
- -1 laser Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 229910018503 SF6 Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 4
- 229960000909 sulfur hexafluoride Drugs 0.000 description 4
- 238000007689 inspection Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The utility model discloses a kind of on-Line Monitor Devices for the detection of electrical equipment HF gases, including laser, optical fiber gas chamber, infrared sensor and signal processor, filled with the HF gases in electrical equipment in optical fiber gas chamber, and optical fiber gas chamber is equipped with optical fiber incidence end and fiber-optic output, laser is connect by incident optical with optical fiber incidence end, fiber-optic output is connect by the output optical fiber with infrared sensor, and the output terminal of infrared sensor is connect with signal processor line；During detection, laser transmitting laser is entered from optical fiber incidence end in optical fiber gas chamber by incident optical, it is exported after indoor HF gases absorb and to form shoot laser from fiber-optic output to infrared sensor, the optical signal received is converted into electric signal and is transmitted to signal processor and handled by infrared sensor, obtain the concentration information of HF gases in optical fiber gas chamber, realize the real-time online detection of electrical equipment HF gases, detection is accurately and reliably.
Description
Technical field
The utility model is related to transmission facility on-line monitoring technique fields, and electrical equipment HF gas is used for more particularly to one kind
The on-Line Monitor Device that physical examination is surveyed.
Background technology
Sulfur hexafluoride (SF6) gas has excellent insulation and arc extinction performance, the dielectric as high voltage electric equipment
Equipment size can be greatly reduced, therefore it is each to be widely used in gas insulation breaker, high-voltage switch gear, transformer, mutual inductor etc.
In kind electrical equipment.
When electrical equipment breaks down, edge flashing usually occurs on solid insulator surface or punctures at highfield
Gas between device housings so that form ground short circuit, and sulfur hexafluoride gas at this time is by the dielectric or gold with fault point
Belong to and generate complicated chemical reaction, generate the decomposition products such as a large amount of hydrogen fluoride gas (HF) and with dust, these decomposition products
Not only result in performance deterioration, the metal erosion of equipment built-in electrical insulation medium, and operation that can be to other electrical equipments and area
The safety belt of domain staff carrys out hidden trouble.Therefore, it is extremely important for the detection of HF gases in sulfur hexafluoride.
Detection at present mostly carries out the HF gases in electrical equipment offline inspection using electrochemical sensor, but HF gases have
There is strong corrosivity, be not suitable for offline inspection, and offline inspection has test inaccuracy, it is easily affected by environment, short life
Problem.
Therefore how to make the detection of HF gases in electrical equipment accurate and safe and simple, be that those skilled in the art need at present
Technical problems to be solved.
Utility model content
The purpose of this utility model is to provide a kind of on-Line Monitor Device for the detection of electrical equipment HF gases, can
Realize the accurate on-line checking of electrical equipment HF gases.
In order to solve the above technical problems, the utility model provides a kind of on-line monitoring for the detection of electrical equipment HF gases
Device, including being used to emitting the laser of laser, the optical fiber gas chamber filled with HF gases, for converting optical signal into electric signal
Infrared sensor and the signal processor for being handled the electric signal, the optical fiber gas chamber are equipped with laser
The indoor optical fiber incidence end of gas and the fiber-optic output by laser export gas chamber are imported, the laser passes through incident optical and institute
Optical fiber incidence end connection is stated, the fiber-optic output is connect by the output optical fiber with the infrared sensor, the infrared sensing
The output terminal of device is connect with the signal processor line.
Preferably, the signal processor includes line connection and is respectively used to carry out the electric signal at preposition amplification
Reason, lock phase enhanced processing and second harmonic handle and form preamplifier, lock-in amplifier and the harmonic wave regulation and control of detection data
Device.
Preferably, it further includes to receive the detection data and the detection data is analyzed and shown is upper
Machine, the host computer are connect with the signal processor.
Preferably, the driver and temperature controller for controlling the laser stabilization output laser are further included.
Preferably, the optical fiber gas chamber is blind flange, and the hollow ring being coaxial therewith is fixed in the blind flange, described
Optical fiber gas chamber is mounted on by the blind flange on electrical equipment, and the center of the blind flange is equipped with for the incident light
The optical fiber leadout hole of fine and described the output optical fiber disengaging.
Preferably, the circumference of the hollow ring is equipped with incident collimator and outgoing collimator, the incidence collimator
Exit direction with the outgoing collimator is along the radial direction of the hollow ring, and the exit end of the incidence collimator is towards institute
It states in hollow ring, towards outside the hollow ring, the incident optical is connected to described the exit end of the outgoing collimator
The incidence end of incident collimator, the exit end of the outgoing collimator are connected to the output optical fiber.
Preferably, the incident collimator and an outgoing collimation there are one being set on the circumference of the hollow ring
Device, the outgoing collimator are located at the position with the incident collimator face on the hollow ring.
Preferably, the circumference of the hollow ring is equipped with multiple incident collimators and multiple outgoing collimations
Device, multiple outgoing collimators are corresponded with multiple incident collimators, and the installation position of the outgoing collimator
The installation position of the corresponding incident collimator of face, the incidence end of an incident collimator be used for it is described enter
Optical fiber connection is penetrated, the exit end of an outgoing collimator with the output optical fiber for connecting, remaining each described outgoing
Incidence end of the exit end of collimator with an incident collimator is connect by optical fiber.
Preferably, the circumference of the hollow ring is equipped with collimator fixed seat, the incidence collimator and the outgoing
Collimator is installed in the collimator fixed seat.
On-Line Monitor Device provided by the utility model for the detection of electrical equipment HF gases emits laser including being used for
Laser, the optical fiber gas chamber filled with HF gases, for the infrared sensor that converts optical signal into electric signal and for pair
The signal processor that electric signal is handled, optical fiber gas chamber is equipped with imports the indoor optical fiber incidence end of gas and by laser by laser
The fiber-optic output of gas chamber is exported, laser is connect by incident optical with optical fiber incidence end, and fiber-optic output passes through emergent light
Fibre is connect with infrared sensor, and the output terminal of infrared sensor is connect with signal processor line.
During detection, laser transmitting laser formed incident laser, incident laser by incident optical from optical fiber incidence end into
Entering in optical fiber gas chamber, incident laser exports after HF gases in optical fiber gas chamber absorb and to form shoot laser from fiber-optic output, and
Infrared sensor is transmitted to by the output optical fiber, the optical signal received is converted into electric signal by infrared sensor, and electric signal passes
It transports to signal processor to be handled, obtains the concentration information of HF gases in optical fiber gas chamber.
After entering optical fiber gas chamber due to incident laser, the indoor HF gases of gas can sponge its distinctive spectral band, lead
The variation of shoot laser light intensity is caused, the HF gases of various concentration, trap is different, and the light intensity of shoot laser is also different, therefore red
It is the optical signal that carries gas concentration information that outer sensor, which will receive, converts optical signal into electric signal, then through signal
The concentration information of HF gases in optical fiber gas chamber can be just obtained after processor processing.In conclusion it is provided by the utility model
Line monitoring device can realize the real-time online detection of electrical equipment HF gases, and detection is accurately and reliably.
Description of the drawings
Fig. 1 is that one kind of the on-Line Monitor Device provided by the utility model for the detection of electrical equipment HF gases is specific
The structure diagram of embodiment；
Fig. 2 is a kind of structure diagram of specific embodiment of optical fiber gas chamber provided by the utility model；
Fig. 3 is a kind of use state diagram of specific embodiment of optical fiber gas chamber provided by the utility model.
Specific embodiment
The core of the utility model is to provide a kind of on-Line Monitor Device for the detection of electrical equipment HF gases, can
Realize the accurate on-line checking of electrical equipment HF gases.
In order to which those skilled in the art is made to more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
It please refers to Fig.1 to Fig. 3, Fig. 1 is the online prison provided by the utility model for the detection of electrical equipment HF gases
Survey a kind of structure diagram of specific embodiment of device；Fig. 2 is a kind of tool of optical fiber gas chamber provided by the utility model
The structure diagram of body embodiment；Fig. 3 is a kind of making for specific embodiment of optical fiber gas chamber provided by the utility model
Use status diagram.
The on-Line Monitor Device for the detection of electrical equipment HF gases that specific embodiment of the present invention provides, including
Laser 1, optical fiber gas chamber 2, infrared sensor 3 and signal processor 4, wherein, optical fiber gas chamber 2 is located in electrical equipment, gas chamber
The interior HF gases filled in electrical equipment, and optical fiber gas chamber 2 is equipped with and laser is imported the indoor optical fiber incidence end of gas and will be swashed
The fiber-optic output of light guide discharge chamber, laser 1 are connect by incident optical 01 with optical fiber incidence end, and fiber-optic output is by going out
It penetrates optical fiber 02 to connect with infrared sensor 3, the output terminal of infrared sensor 3 is connect with 4 line of signal processor.
During detection, laser 1 emits laser and forms incident laser, and incident laser is by incident optical 01 from optical fiber incidence end
Into in optical fiber gas chamber 2, incident laser is defeated from fiber-optic output after HF gases in optical fiber gas chamber 2 absorb and to form shoot laser
Going out, and pass through the output optical fiber 02 and be transmitted to infrared sensor 3, the optical signal received is converted into electric signal by infrared sensor 3,
Electric signal transmission to signal processor 4 is handled, and obtains the concentration information of HF gases in optical fiber gas chamber 2.
After entering optical fiber gas chamber 2 due to incident laser, the indoor HF gases of gas can sponge its distinctive spectral band, lead
The variation of shoot laser light intensity is caused, the HF gases of various concentration, trap is different, and the light intensity of shoot laser is also different, therefore red
It is the optical signal that carries gas concentration information that outer sensor 3, which will receive, converts optical signal into electric signal, then through signal
The concentration information of HF gases in optical fiber gas chamber 2 can be just obtained after the processing of processor 4.It is in conclusion provided by the utility model
On-Line Monitor Device can realize the real-time online detection of electrical equipment HF gases, and detection is accurately and reliably.
On the basis of above-mentioned specific embodiment, the on-Line Monitor Device of specific embodiment of the present invention offer,
Signal processor 4 can specifically include preamplifier 41, lock-in amplifier 42 and the harmonic wave modulator 43 of line connection, preceding storing
Big device 41, lock-in amplifier 42 and harmonic wave modulator 43 carry out preposition enhanced processing to the electric signal received respectively, lock is mutually put
Big processing and second harmonic processing form the detection data of HF gas concentration information in reflection optical fiber gas chamber 2.
Further, specific embodiment of the present invention provide on-Line Monitor Device, signal processor 4 can also with it is upper
Position machine 5 is attached, and after signal processor 4 obtains detection data to the Electric signal processing received, detection data is uploaded to
Host computer 5, host computer 5 are analyzed and are shown to detection data, and staff is facilitated to understand in real time.
Further, driver 03 and temperature controller 04 can also be set, and driver 03 and temperature controller 04 are electrically connected with laser 1
It connects, control laser 1 exports stabilized lasers.
On the basis of above-mentioned each specific embodiment, the on-line monitoring that specific embodiment of the present invention provides fills
It puts, for convenience of the detection of HF gases, optical fiber gas chamber 2 is specifically as follows blind flange 21, is fixed with and is coaxial therewith in blind flange 21
Hollow ring 22, optical fiber incidence end and fiber-optic output be located on the circumference of hollow ring 22, meanwhile, for convenience of optical fiber gas chamber
2 and the connection of laser 1, infrared sensor 3 etc., optical fiber leadout hole 23 can be equipped in the center of blind flange 21, it is incident
Optical fiber 01 and the output optical fiber 02 are drawn from optical fiber leadout hole 23 to be connect with 1 grade of laser；Optical fiber gas chamber 2 is passed through into flange during use
Lid 21 is mounted on electrical equipment, and 1 other building blocks of grade of laser are real mounted on other appropriate locations far from electrical equipment
Now on-line monitoring inside electric appliance HF gas contents are safe and reliable at a distance, and can avoid signal processor 4 will not be by
The influence of near electrical equipment electromagnetic field ensures detection structure accurately and reliably.
In order to control the transmission direction of laser, ensure incident laser from optical fiber incidence end enter optical fiber gas chamber 2 after final energy
It is enough to be projected from fiber-optic output, incident collimator 24 and outgoing collimator 25 can be equipped on the circumference of hollow ring 22, is entered
It penetrates collimator 24 and is emitted the exit direction of collimator 25 along the radial direction of hollow ring 22, the exit end court of incident collimator 24
Into hollow ring 22, the exit end of collimator 25 is emitted towards outside hollow ring 22, and incident optical 01 is connected to incidence
The incidence end of collimator 24, the exit end of outgoing collimator 25 are connected to the output optical fiber 02.
Specifically, incident collimator 24 and an outgoing collimator there are one being set on the circumference of hollow ring 22
25, and outgoing collimator 25 is located at the position on hollow ring 22 with incident 24 face of collimator, incident laser passes through incident light
Fibre 01 enters optical fiber gas chamber 2, and is collimated by incident collimator 24, is transmitted in the outgoing collimator 25 with its face, then pass through
The output optical fiber 02 is crossed to export, incident laser through incident collimator 24 reach outgoing collimator 25 during its distinctive frequency spectrum wave
Section absorbs to form shoot laser by HF gases in gas chamber.
In another embodiment specific implementation mode, it in order to increase light intensity variation, improves and measures precision, in hollow ring 22
Multiple incidence collimators 24 and multiple outgoing collimators 25, multiple outgoing collimators 25 and multiple incident standards can be equipped on circumference
Straight device 24 corresponds, and the setting position of the corresponding incident collimator of installation position face of each outgoing collimator 25
It puts, i.e. laser can be transmitted to corresponding after an incident collimator 24 collimates from the exit end of the incidence collimator 24
Outgoing is accurate to play device, and the incidence end of one of incidence collimator 24 with incident optical 01 for connecting, an outgoing collimator 25
Exit end for being connect with the output optical fiber 02, remaining is each emitted exit end of collimator 25 and incident is collimated with one
The incidence end of device 24 is connected by optical fiber；During detection, incident laser enters optical fiber gas chamber 2 by incident optical 01, and pass through into
It penetrates collimator 24 to collimate, be transmitted in the outgoing collimator 25 with its face, it is incident accurate to introduce another using optical fiber transmission
Emit laser at straight device 24, and so on, it is finally transmitted in the outgoing collimator 25 being connect with output optical fibre, and by outgoing
Optical fiber 02 exports, and in Laser emission receive process so repeatedly, the indoor HF gases of gas can constantly sponge special in laser
Some spectral bands increase the variation of shoot laser light intensity, improve detection accuracy.
Specifically, it can be provided with 10 incident collimators 24 and 10 outgoing collimators 25, incident collimator 24 and go out
Collimator 25 is penetrated uniform intervals and to be staggered on the circumference of hollow ring 22；It is more convenient for realizing incident 24 He of collimator
Outgoing collimator 25 connects and the control to laser transmission direction.Certainly, the tool of incident collimator 24 and outgoing collimator 25
Body sets quantity and set-up mode to be not limited to this, and can be adjusted according to actual conditions, as long as ensureing incident laser from light
Fine incidence end enters after optical fiber gas chamber 2 can finally project from fiber-optic output, be within the protection scope of the utility model.
Further, for convenience of the installation of incident collimator 24 and outgoing collimator 25, on the circumference of hollow ring 22
Collimator fixed seat can be installed, and incident collimator 24 and the outgoing collimator 25 are installed in collimator fixed seat
On.
The on-Line Monitor Device provided by the utility model for the detection of electrical equipment HF gases has been carried out in detail above
It is thin to introduce.Specific case used herein is expounded the principle and embodiment of the utility model, above example
Explanation be merely used to help understand the method and its core concept of the utility model.It should be pointed out that for the art
For those of ordinary skill, under the premise of the utility model principle is not departed from, several change can also be carried out to the utility model
Into and modification, these improvement and modification are also fallen into the protection domain of the utility model claims.
Claims (9)
1. a kind of on-Line Monitor Device for the detection of electrical equipment HF gases, which is characterized in that emit laser including being used for
Laser, the optical fiber gas chamber filled with HF gases, for the infrared sensor that converts optical signal into electric signal and for institute
State the signal processor that electric signal is handled, the optical fiber gas chamber be equipped with by laser import the indoor optical fiber incidence end of gas and
By the fiber-optic output of laser export gas chamber, the laser is connect by incident optical with the optical fiber incidence end, the light
Fine output terminal is connect by the output optical fiber with the infrared sensor, the output terminal of the infrared sensor and the signal processing
Device line connects.
2. on-Line Monitor Device according to claim 1, which is characterized in that the signal processor includes line and connects and divide
The electric signal be used to not carried out to preposition enhanced processing, lock phase enhanced processing and second harmonic to handle and form detection data
Preamplifier, lock-in amplifier and harmonic wave modulator.
3. on-Line Monitor Device according to claim 2, which is characterized in that further include to receive the detection data simultaneously
The host computer that the detection data is analyzed and shown, the host computer are connect with the signal processor.
4. on-Line Monitor Device according to claim 3, which is characterized in that further include to control the laser stabilization
Export the driver and temperature controller of laser.
5. on-Line Monitor Device according to any one of claims 1 to 4, which is characterized in that the optical fiber gas chamber is method
Orchid is covered, and the hollow ring being coaxial therewith is fixed in the blind flange, and the optical fiber gas chamber is mounted on electricity by the blind flange
In gas equipment, the center of the blind flange is equipped with the optical fiber export passed in and out for the incident optical and the output optical fiber
Hole.
6. on-Line Monitor Device according to claim 5, which is characterized in that the circumference of the hollow ring is equipped with incidence
The exit direction of collimator and outgoing collimator, the incidence collimator and the outgoing collimator is along the hollow ring
Radially, the exit end of the incident collimator is towards in the hollow ring, and the exit end of the outgoing collimator is described in
Outside hollow ring, the incident optical is connected to the incidence end of the incident collimator, and the exit end of the outgoing collimator connects
It is connected to the output optical fiber.
7. on-Line Monitor Device according to claim 6, which is characterized in that there are one being set on the circumference of the hollow ring
The incidence collimator and an outgoing collimator, the outgoing collimator are located on the hollow ring and the incidence
The position of collimator face.
8. on-Line Monitor Device according to claim 6, which is characterized in that the circumference of the hollow ring is equipped with multiple
The incidence collimator and multiple outgoing collimators, multiple outgoing collimators and multiple incident collimators are one by one
It is corresponding, and the installation position of the corresponding incident collimator of installation position face of the outgoing collimator, an institute
The incidence end of incident collimator is stated for being connect with the incident optical, the exit end of an outgoing collimator is used for and institute
The output optical fiber connection is stated, remaining incidence end of each exit end for being emitted collimator with an incident collimator is led to
Cross optical fiber connection.
9. on-Line Monitor Device according to claim 6, which is characterized in that the circumference of the hollow ring is equipped with collimation
Device fixed seat, the incidence collimator and the outgoing collimator are installed in the collimator fixed seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721720191.4U CN207528621U (en) | 2017-12-11 | 2017-12-11 | A kind of on-Line Monitor Device for the detection of electrical equipment HF gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721720191.4U CN207528621U (en) | 2017-12-11 | 2017-12-11 | A kind of on-Line Monitor Device for the detection of electrical equipment HF gases |
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| Publication Number | Publication Date |
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| CN207528621U true CN207528621U (en) | 2018-06-22 |
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ID=62578091
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721720191.4U Active CN207528621U (en) | 2017-12-11 | 2017-12-11 | A kind of on-Line Monitor Device for the detection of electrical equipment HF gases |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765184A (en) * | 2019-01-16 | 2019-05-17 | 深圳供电局有限公司 | Optical gas absorbance pond and optical gas detection system |
| CN109870412A (en) * | 2019-03-04 | 2019-06-11 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of multi-path long light path gas chamber applied to inside SF6 equipment |
| CN110361329A (en) * | 2019-07-29 | 2019-10-22 | 云南电网有限责任公司昭通供电局 | A kind of detection system for the SF6 decomposition product that can improve detection accuracy |
| CN110887812A (en) * | 2019-12-03 | 2020-03-17 | 国网重庆市电力公司电力科学研究院 | HF gas detection device in high-voltage switch equipment |
-
2017
- 2017-12-11 CN CN201721720191.4U patent/CN207528621U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109765184A (en) * | 2019-01-16 | 2019-05-17 | 深圳供电局有限公司 | Optical gas absorbance pond and optical gas detection system |
| CN109870412A (en) * | 2019-03-04 | 2019-06-11 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of multi-path long light path gas chamber applied to inside SF6 equipment |
| CN110361329A (en) * | 2019-07-29 | 2019-10-22 | 云南电网有限责任公司昭通供电局 | A kind of detection system for the SF6 decomposition product that can improve detection accuracy |
| CN110887812A (en) * | 2019-12-03 | 2020-03-17 | 国网重庆市电力公司电力科学研究院 | HF gas detection device in high-voltage switch equipment |
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