CN109490204A - A kind of device of Discharge Simulation and electric discharge decomposition gas monitoring integration - Google Patents

A kind of device of Discharge Simulation and electric discharge decomposition gas monitoring integration Download PDF

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Publication number
CN109490204A
CN109490204A CN201811534145.4A CN201811534145A CN109490204A CN 109490204 A CN109490204 A CN 109490204A CN 201811534145 A CN201811534145 A CN 201811534145A CN 109490204 A CN109490204 A CN 109490204A
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gas
signal
excitation module
signal excitation
module
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CN109490204B (en
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张国强
李康
韩冬
邱宗甲
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Institute of Electrical Engineering of CAS
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Institute of Electrical Engineering of CAS
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1218Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G01N2021/1704Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The device of a kind of Discharge Simulation and the decomposition gas monitoring integration that discharges, including light source and signal processing module, sealing gas container, wiring ring flange through walls, high-voltage wall bushing, low pressure wall bushing, charging and discharging valve, support base, high-pressure polar plate, low pressure pole plate, signal excitation module, collimating optical fibre head, microphone, insulating supporting, signal excitation module blind flange.It is characterized by: light source and signal processing module are placed on sealing gas external container, connected by the wiring ring flange through walls on optical fiber, cable and sealing gas container, the wiring ring flange through walls other side is separately connected collimating optical fibre head and microphone.When work, electric discharge is generated at the pin electrode of high-pressure polar plate, and insulating gas is excited to generate decomposition, the laser beam that light source and signal processing module issue injects signal excitation module by collimating optical fibre head, beam excitation corresponds to the gas component of absorption frequency, and sound pressure signal is generated in signal excitation inside modules, microphone detects sound pressure signal, and then obtains the concentration of corresponding gas component.

Description

A kind of device of Discharge Simulation and electric discharge decomposition gas monitoring integration
Technical field
The present invention relates to a kind of gas controlling device, in particular to gas is decomposed in a kind of electrical equipment Discharge Simulation and electric discharge The optoacoustic spectroscopy gas controlling device of monitoring integration.
Background technique
SF6 gas is widely used in breaker, mutual inductor, casing, SF6 because it is with excellent insulation and arc extinction performance In the electrical equipments such as gas insulated combined electrical equipment (Gas Insulated Switchgear, GIS).Currently, China 220kV and with The supergrid and extra-high voltage grid of upper voltage class have been strictly required all using SF6 switchgear, ownership 3.3 More than ten thousand intervals, rank first in the world.In addition, the equipment such as SF6 gas-insulated pipeline bus (Gas Insulated Line, GIL) Or the preferred power transmission mode in the crucial place such as nuclear power, water power and across river transmission of electricity piping lane.
SF6 gas chemistry is stablized, but can dissociate under electric discharge or overheated condition;Exist in no other impurities When, the SF6 of dissociation can rapid composite reduction be SF6 gas.But a small amount of water can inevitably in actual use, be mixed in SF6 gas Divide and impurity, the SF6 of dissociation such as oxygen are further reacted with these impurity compositions, generates point that a variety of toxicity are big and corrosivity is strong It solves product (SO2F2, SOF2, SO2, H2S etc.).These decomposition products are present in equipment, can further speed up equipment fault hair Open up, endanger the safety of service personnel.As the hinge that electric energy is transmitted and distributed in power grid, SF6 switchgear failure may cause Large scale equipment damage, large-area power-cuts etc. cause huge economy and society to lose.
Accounting highest of the class failure that insulate in SF6 electrical equipment malfunction, harm is maximum, this kind of failure eventually results in SF6 gas is decomposed.Failure early warning and the analysis of fault type may be implemented to the detection for decomposing gas.Currently, row It is electrochemical process and gas chromatography, Bu Nengshi that SF6 failure as defined in industry standard DL/T1205-2013, which decomposes gas detection method, Existing highly sensitive on-line monitoring.Domestic and international power industry is only limited to " periodic sampling, offline inspection " to the detection of SF6 decomposition product, The failure of SF6 electrical equipment can not be found in time.Further, since the decomposition species of SF6 gas are more, chemical property is active, from Line testing result influenced by sampling time, detection time it is very big, cause SF6 decompose gas failure criterion there is no it is unified fixed By.Therefore, need a kind of high-precision, real-time online SF6 switchgear decomposition product detection device, capture point of SF6 in time Solution preocess works out scientific and reasonable failure criterion, and the detection technique for promoting power equipment is horizontal, ensures the safety of power grid and steady It is fixed.
In addition, the gas-insulated mediums such as c-C4F8, C4F7N, CF3I there is also similar problems, continue that Discharge Simulation can be achieved With the integrated on-line equipment of gas detection.
Gas is decomposed to SF6 there are also patent at present to detect, but belongs to semi-on-line detection, is not met by event Hinder the demand of criterion research.As patent CN2747583Y " testing agency of sulfur hexafluoride electrical equipment fault locator " passes through one A four-way connection connects pressure sensor, SO2Electrochemical gas sensor and H2S electrochemical gas sensor detects SO2And H2S Content and device interior failure is diagnosed.But the patent can only detect SO2And H2S gas detects multiple gases component When will receive the limitation of sensor.It is similar that there are also patent CN101464671A " a kind of sulfur hexafluoride gas and its decomposition product prisons Survey the device and method of monitoring ".Patent CN101644670A " infrared detecting device of sulfur hexafluoride gaseous discharge micro component and SF of the method " using the method for Fourier infrared spectrum to GIS under shelf depreciation6Gas is decomposed to be detected.In addition, patent CN10151496A " the SF based on optoacoustic spectroscopy6Detection system ", patent CN101982759A " lithium sulphur content under partial discharge Solve the infrared photoacoustic spectra detection device and method of component ", " off-resonance optoacoustic spectroscopy tests and analyzes dress to patent CN102661918A It sets ".
Although these above-mentioned detection methods referred to as on-line checking, still needed in real work by sample gas from quilt It is extracted out in measurement equipment, and the photoacoustic cell of injection light acousto-optic spectrum detection device detects to realize, to guarantee the gas component detected Sample representation needs multiple cycle sampling to rinse photoacoustic cell, cannot achieve some unstable gas components in failure decomposable process Detection.Fig. 1 show traditional instrument work and application mode.In Fig. 1,1 is detecting instrument, and 2 be setting containing tested gas Standby, 3 be the lossless cycle sampling module of single interface.10 be 1 internal light source module of detecting instrument, and 11 be 1 internal control of detecting instrument Circuit module, 12 be 1 inside locking phase amplifier module of detecting instrument, and 13 be the gas cell inside detecting instrument 1, and 14 be detector Signal transducer inside device 1.21 be the gas interface of the equipment 2 containing tested gas.When work, single interface cycle sampling mould Block 3 from 2 kinds of taking-up gaseous samples of equipment containing tested gas and enters detecting instrument 1 by air inlet pipe by gas interface 21 Internal gas cell 13, flows back to single interface cycle sampling module 3 by exhaust pipe after detection, and recharges into containing tested gas Equipment 2.The equipment 2 for usually containing tested gas is sufficiently bulky, is far longer than the volume of gas cell 13 and pipeline, to guarantee from gas Body interface 21 obtains to obtain gas sample representativeness, need to use more than 3 circulating samplings of single interface cycle sampling module, recharge gas, Sample collection process consumes the plenty of time, while sample changes in cyclic process, influences testing result.
Summary of the invention
The purpose of the present invention is overcome the deficiencies in the prior art, propose that a kind of discharge fault simulation is decomposed gas with electric discharge and supervised Survey integrated apparatus.Multicomponent decomposition product real time on-line monitoring can be achieved in the present invention, avoid traditional detection method by the sampling time, Sampling location influences big problem, realizes the monitoring of gas decomposable process under discharging condition, especially SF6 gas decomposable process Detection.
Discharge fault simulation of the invention is decomposed gas monitoring integration device with electric discharge and is specifically included that at light source and signal Manage module, sealing gas container, wiring ring flange through walls, high-voltage wall bushing, low pressure wall bushing, charging and discharging valve, support Seat, high-pressure polar plate, low pressure pole plate, signal excitation module, collimating optical fibre head, microphone, insulating supporting, signal excitation module flange Lid.
The light source and signal processing module are placed on sealing gas external container, pass through optical fiber, cable and sealing gas Wiring ring flange through walls connection on container, the wiring ring flange through walls other side is separately connected collimating optical fibre head, microphone.It is described Wiring ring flange through walls is mounted on sealing gas container side wall, and main function is the case where guaranteeing the sealing of sealing gas container Infrared optical fiber, cable in lower connection.
It include laser light source and its driving, lock-in amplifier, Signal transfer box inside the light source and signal processing module And control module.It laser light source and its is driven through cable and is connected with lock-in amplifier, provide modulation frequency for lock-in amplifier Rate reference signal;It laser light source and its is driven through optical fiber and is connected with external wiring ring flange through walls;Signal transfer box and outer The wiring ring flange through walls in portion is connected, and obtains the signal of microphone, and be transferred to lock-in amplifier by signal cable;Locking phase is put Big device is connected with control module, realizes control and signal detection.The lock-in amplifier is multichannel;The laser light source and its The quantity of driving is identical as detection gas constituent species amount, and identical as collimating optical fibre head, microphone quantity.
The signal excitation module, collimating optical fibre head, microphone collectively form gas detection cell, the gas detection list Member has multiple, and quantity is determined by detection gas type, and 1 gas detection cell is arranged in every kind of detection gas component.Multiple gases Detection unit is around the arrangement in a center of symmetry of low pressure pole plate center line.I.e. signal excitation module, collimating optical fibre head, microphone are more A, quantity is determined according to detection gas type.The signal excitation module blind flange is arranged on gas detection cell top.
The signal excitation module blind flange can be flat structure, and the production of conductor material, preferably brass or aluminium are closed Golden material is provided with outer ring fixation hole, inner ring fixation hole, 6 preferably each, uniformly distributed;Each signal excitation module blind flange correspondence is more After a signal excitation module, signal excitation module blind flange and the installation of multiple signal excitation modules are fixed, with signal excitation module Central cavity corresponding position is provided with multiple ventholes.The corresponding high-pressure polar plate includes pole plate and pin electrode, the pin electrode There are 1, and pin electrode center line and low pressure pole plate center line, signal excitation module blind flange center line is overlapped.Pin electrode center The each signal excitation module centers linear distance of line-spacing is identical.
The signal excitation module blind flange is also possible to flat structure, conductor material, preferably brass or aluminium alloy Material is provided with fixation hole, fixation hole preferably 6, uniformly distributed.The corresponding signal excitation mould of each signal excitation module blind flange Block, and multiple ventholes are provided with signal excitation module centers cavity corresponding position.The corresponding high-pressure polar plate includes pole plate And pin electrode, and pin electrode is multiple, and quantity is identical as gas detection cell quantity, and pin electrode geometric dimension is identical, each Pin electrode center line is overlapped with corresponding signal excitation module centers line.
The venthole can be the center line clear opening parallel with signal excitation module centers line;But preferred ventilation Hole is the through-hole that center line and signal excitation module centers line have certain tilt angle, and tilt angle guarantees near signal The extended line of the venthole of excitation module center line intersects with the bottom surface of signal excitation module cushion chamber, without with a number excitation module Signal excitation chamber inner surface intersection.Influence of the corona noise to sound pressure signal can be reduced using which.
Insulation gas filled inside the sealing gas container, charging and discharging valve is arranged on sealing gas container side wall, For sealing gas container vacuum-pumping and it is filled with insulating gas, high-voltage wall bushing is arranged in sealing gas container top, and with High-pressure polar plate conducting;Low pressure wall bushing is arranged in sealing gas container bottom, and low pressure pole plate is mounted on sealing by support base Gas container inner lower, and be connected with low pressure wall bushing;Signal excitation module is mounted on above low pressure pole plate, insulating supporting Be mounted on above signal excitation module, high-pressure polar plate is mounted on above insulating supporting, and with signal excitation insulation module, collimated light Fine head is mounted at the collimating optical fibre head mounting hole of low pressure pole plate, and the collimated light of signal excitation module centers line, low pressure pole plate Fine head installation centerline hole, collimating optical fibre head center line three are overlapped.Microphone is mounted on the middle part of sliding channel of signal excitation module On, and microphone center line and collimating optical fibre head central axis.The low pressure pole plate, signal excitation module, signal excitation mould The conducting of block blind flange, current potential are identical.
The signal excitation module is a cylindrical body or rectangular parallelepiped structure, and making material is conductor material, preferably copper, aluminium Alloy, stainless steel, inner wall can be gold-plated, are provided with " dumbbell shape " cavity at center, cavity middle part is that " dumbbell medium position " is signal Excitation cavity is designed as resonant structure, and diameter of phi is 3~100mm, length L is 20~500mm, and meets diameter of phi and be less than length Spend L;Cavity two sides are that " dumbbell both ends position " is cushion chamber, and diameter is greater than signal excitation chamber, in two sides cushion chamber lower sides On be provided with stomata, realize the circulation of signal excitation module inside cavity gas and extraneous gas, the signal excitation chamber in the middle part of cavity Microphone mounting hole is provided on side wall, microphone mounting hole (42-3) is through-hole, is connected to the intracavitary portion of signal excitation.
The frequency response range of the microphone is 0.1Hz~30kHz, and to shelf depreciation generate 50kHz~ 200kHz range sound pressure signal is greater than 20mV/Pa without response, sensitivity.The microphone can be electricity microphone, can also be with It is optics microphone.
When this monitoring device works, high voltage power supply is by high-voltage wall bushing, low pressure wall bushing to high-pressure polar plate, low pressure Pole plate power supply, generates electric discharge at pin electrode, and insulating gas is excited to generate decomposition, and decomposes gas and pass through signal excitation module Inside blind flange free diffusing entering signal excitation module;The laser that light source and signal processing module issue passes through collimating optical fibre head Signal excitation module is injected, the gas component that beam excitation corresponds to absorption frequency generates acoustic pressure letter in signal excitation inside modules Number, microphone detection sound pressure signal simultaneously returns to light source and signal processing module, obtains corresponding gas component by processing signal Concentration.Realize the concentration of component for obtaining while generating and decomposing gas and generating gas, multiple gas detection cell detections synchronize Detect various ingredients gas.It realizes while generating decomposition gas, it can pass through laser exciation signal and obtain generation gas Concentration of component.
Detailed description of the invention
The work of Fig. 1 traditional instrument and application mode schematic diagram;
Fig. 2 is Discharge Simulation of the present invention the first embodiment schematic diagram of monitoring device integrated with electric discharge decomposition gas;
Fig. 3 is Discharge Simulation of the present invention second of embodiment schematic diagram of monitoring device integrated with electric discharge decomposition gas;
Fig. 4 is the first embodiment high-pressure polar plate structural schematic diagram of monitoring device of the invention;
Fig. 5 is the first embodiment signal excitation module blind flange schematic diagram of monitoring device of the invention;
Fig. 6 is second of embodiment high-pressure polar plate structural schematic diagram of monitoring device of the invention;
Fig. 7 is the first embodiment signal excitation module blind flange schematic diagram of monitoring device of the invention;
Fig. 8 is signal excitation module diagram of the invention;
Fig. 9 is low pressure pole plate schematic diagram of the invention;
Figure 10 is light source of the invention and signal processing module schematic diagram;
Figure 11 is a kind of aperture embodiment schematic diagram of monitoring device signal excitation module blind flange of the invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Background technique final stage is shown in the work of Fig. 1 traditional instrument and application mode schematic diagram, detailed description.
Fig. 2 is Discharge Simulation of the present invention the first embodiment schematic diagram of monitoring device integrated with electric discharge decomposition gas. As shown in Fig. 2, specifically including that light source and signal processing module 410, sealing gas container 49, wiring ring flange 48 through walls, high pressure Wall bushing 45, low pressure wall bushing 44, charging and discharging valve 411, support base 46, high-pressure polar plate 41, low pressure pole plate 43, signal swash Send out module 42, collimating optical fibre head 40, microphone 47, insulating supporting 412, signal excitation module blind flange 413.
Light source and signal processing module 410 are placed on outside sealing gas container 49, pass through optical fiber, cable and sealing gas Wiring ring flange 48 through walls connection on container 49, the other side of wiring ring flange 48 through walls is separately connected 40 He of collimating optical fibre head Microphone 47.Wiring ring flange 48 through walls is mounted on 49 side wall of sealing gas container.
The signal excitation module 42, collimating optical fibre head 40, microphone 47 collectively form gas detection cell, the gas Detection unit has multiple, and quantity is determined by detection gas type, and 1 gas detection cell is arranged in every kind of detection gas component, more A gas detection cell is around the arrangement in a center of symmetry of 43 center line of low pressure pole plate.The signal excitation module blind flange 413 is arranged On gas detection cell top.
49 inside of sealing gas container is insulation gas filled, and charging and discharging valve 411 is arranged in 49 side wall of sealing gas container On, insulating gas is vacuumized and is filled with for sealing gas container 49, and high-voltage wall bushing 45 is arranged in sealing gas container 49 Top, the setting of low pressure wall bushing 44 are mounted on sealing by support base 46 in 49 bottom of sealing gas container, low pressure pole plate 43 49 inner lower of gas container, and be connected with low pressure wall bushing 44, signal excitation unit is mounted on above low pressure pole plate 43, absolutely Edge support 412 is mounted on above signal excitation module 42, and high-pressure polar plate 41 is mounted on above insulating supporting 412, and is swashed with signal It sends out module 42 to insulate, high-pressure polar plate 41 is connected with high-voltage wall bushing 45, and collimating optical fibre head 40 is mounted on opening for low pressure pole plate 43 At hole, and 42 center line of signal excitation module, 40 center line of collimating optical fibre head, 43 aperture center line of low pressure pole plate are overlapped.Microphony Device 47 is mounted in the middle part of sliding channel of signal excitation module 42, and 47 center line of microphone and 40 center line of collimating optical fibre head hang down Directly.Pin electrode center line on the high-pressure polar plate 41 is away from each 42 center line of signal excitation module apart from identical.The low pressure Pole plate 43, signal excitation module 42, the conducting of signal excitation module blind flange 413, current potential are identical.
When this monitoring device works, high voltage power supply gives high-pressure polar plate by high-voltage wall bushing 45, low pressure wall bushing 44 41, low pressure pole plate 43 is powered, and electric discharge is generated at 41 pin electrode of high-pressure polar plate, and excites insulating gas to generate decomposition, and decompose Gas passes through inside 413 entering signal excitation module 42 of signal excitation module blind flange;Light source and signal processing module 410 issue Laser signal excitation module 42 is injected by collimating optical fibre head 40, excite the gas component of corresponding absorption frequency to generate acoustic pressure letter Number, microphone 47 detects sound pressure signal and returns to light source and signal processing module 410, obtains corresponding gas component by processing Concentration.The concentration of component for generating gas, multiple gases can be obtained by laser exciation signal while generating and decomposing gas The synchronous detection various ingredients gas of detection unit detection.
Fig. 3 is Discharge Simulation of the present invention second of embodiment schematic diagram of monitoring device integrated with electric discharge decomposition gas. As shown in figure 3, specifically including that light source and signal processing module 410, sealing gas container 49, wiring ring flange 48 through walls, high pressure Wall bushing 45, low pressure wall bushing 44, charging and discharging valve 411, support base 46, high-pressure polar plate 41, low pressure pole plate 43, signal swash Send out module 42, collimating optical fibre head 40, microphone 47, insulating supporting 412, signal excitation module blind flange 413.
Light source and signal processing module 410 are placed on outside sealing gas container 49, pass through optical fiber, cable and sealing gas Wiring ring flange 48 through walls connection on container 49,48 other side of wiring ring flange through walls is separately connected collimating optical fibre head 40 and micro- Sound device 47.Wiring ring flange 48 through walls is mounted on 49 side wall of sealing gas container.
The signal excitation module 42, collimating optical fibre head 40, microphone 47 collectively form gas detection cell, the gas Detection unit has multiple, and quantity is determined by detection gas type, and 1 gas detection cell is arranged in every kind of detection gas component, more A gas detection cell is around the arrangement in a center of symmetry of 43 center line of low pressure pole plate.The signal excitation module blind flange 413 is arranged On gas detection cell top.
49 inside of sealing gas container is insulation gas filled, and the side of sealing gas container 49 is arranged in charging and discharging valve 411 On wall, insulating gas is vacuumized and is filled with for sealing gas container 49, and high-voltage wall bushing 45 is arranged in sealing gas container The bottom of sealing gas container 49 is arranged in 49 top, low pressure wall bushing 44, and low pressure pole plate 43 is installed by support base 46 It is connected in 49 inner lower of sealing gas container, and with low pressure wall bushing 44, signal excitation unit is mounted on low pressure pole plate 43 Above, insulating supporting 412 is mounted on above signal excitation module 42, and high-pressure polar plate 41 is mounted on above insulating supporting 412, and with Signal excitation module 42 insulate, and high-pressure polar plate 41 is connected with high-voltage wall bushing 45, and collimating optical fibre head 40 is mounted on low pressure pole plate 43 tapping, and 42 center line of signal excitation module, 40 center line of collimating optical fibre head, 43 aperture center line weight of low pressure pole plate It closes.Microphone 47 is mounted in the middle part of sliding channel of signal excitation module 42, and the center line of microphone 47 and collimating optical fibre head 40 Central axis.Pin electrode quantity on the high-pressure polar plate 41 is identical as gas detection cell quantity, and pin electrode geometry Size is identical, and pin electrode center line is overlapped with the center line of corresponding signal excitation module 42.The low pressure pole plate 43, signal swash Send out module 42, signal excitation module blind flange 413 is connected, current potential is identical.
When this monitoring device works, high voltage power supply gives high-pressure polar plate by high-voltage wall bushing 45, low pressure wall bushing 44 41, low pressure pole plate 43 is powered, and electric discharge is generated at 41 pin electrode of high-pressure polar plate, and excites insulating gas to generate decomposition, and decompose Gas passes through inside 413 entering signal excitation module 42 of signal excitation module blind flange;Light source and signal processing module 410 issue Laser signal excitation module 42 is injected by collimating optical fibre head 40, excite the gas component of corresponding absorption frequency to generate acoustic pressure letter Number, microphone 47 detects sound pressure signal and fibre returns to light source and signal processing module 410, obtains corresponding gas component by processing Concentration.The concentration of component for generating gas, Duo Geqi can be obtained by laser exciation signal while generating and decomposing gas The synchronous detection various ingredients gas of body detection unit detection.
Fig. 4 is the first embodiment high-pressure polar plate structural schematic diagram of monitoring device of the invention.As shown in figure 4, high pressure Pole plate 41 is made of conductor material, and pin electrode 41-2, the position of pin electrode 41-2 are housed on the pole plate 41-1 of high-pressure polar plate 41 Distance away from 42 center line of signal excitation module is identical.
Fig. 5 is the first embodiment signal excitation module blind flange schematic diagram of monitoring device of the invention.Such as Fig. 5 institute Show, signal excitation module blind flange 413 is flat structure, and the production of conductor material, preferably brass or aluminum alloy materials are provided with Outer ring fixation hole 413-1, inner ring fixation hole 413-2, it is 6 preferably each, it is uniformly distributed.Signal excitation module blind flange 413 and 8 signals After the installation of excitation module 42 is fixed, multiple venthole 413-3 are provided with 8 42 circular cavity corresponding positions of signal excitation module.
Fig. 6 is second of embodiment high-pressure polar plate structural schematic diagram of monitoring device of the invention.As shown in fig. 6, high pressure Pole plate 41 is made of conductor material, and the pole plate 41-1 of high-pressure polar plate 41 is centrosymmetric to be equipped with pin electrode 41-2, quantity in figure It is 8, is also possible to other quantity, the center line of each pin electrode 41-2 and the signal excitation module 42 in detection device The coincidence of center line.
Fig. 7 is second of embodiment signal excitation module blind flange schematic diagram of monitoring device of the invention.Such as Fig. 7 institute Show, signal excitation module blind flange 413 is flat structure, and the production of conductor material, preferably brass or aluminum alloy materials are provided with Fixation hole 413-1, it is fixation hole preferably 6, uniformly distributed.Signal excitation module blind flange 413 and the installation of signal excitation module 42 are fixed Afterwards, multiple venthole 413-2 are provided with 42 circular cavity corresponding position of signal excitation module.
Fig. 8 is signal excitation module diagram of the invention.As shown in figure 8, signal excitation module 42 be a cylindrical body or Rectangular parallelepiped structure, the production of conductor material, preferably copper, aluminium alloy, inner wall can be gold-plated, are provided with " dumbbell shape " cavity, chamber at center I.e. " dumbbell medium position " is signal excitation chamber 42-2 in the middle part of body, is designed as resonant structure, and diameter of phi is 3~100mm, length L is 20~500mm, and meets diameter of phi less than length L;Cavity two sides are that " dumbbell both ends position " is cushion chamber 42-1, diameter Greater than signal excitation chamber 42-2, it is provided with stomata 42-4 on the cushion chamber 42-1 lower sides of two sides, realizes signal excitation module 42 The circulation of inside cavity gas and extraneous gas is provided with microphone mounting hole on the signal excitation chamber 42-2 side wall in the middle part of cavity 42-3, microphone mounting hole 42-3 are through-hole, are connected to the inside signal excitation chamber 42-2.
Fig. 9 is low pressure pole plate schematic diagram of the invention.As shown in figure 9, low-field electrode 43 is flat structure, conductor material Production, is provided with the mounting hole 43-1 of collimating optical fibre head 40, and the mounting hole 43-1 quantity is identical as 42 quantity of signal excitation module, And mounting hole 43-1 center line is overlapped with 42 center line of signal excitation module.
Figure 10 is light source of the invention and signal processing module schematic diagram.As shown in Figure 10, the light source and signal processing It include multiple laser light sources and its driving 410-1 inside module 410, the spectrum that laser light source frequency distribution corresponds to detection gas is inhaled Receive peak, lock-in amplifier 410-2, Signal transfer box 410-3, control module 410-4.Laser light source and its driving 410-1 pass through Cable is connected with lock-in amplifier 410-2, provides modulating frequency reference signal for lock-in amplifier 410-2;Laser light source and its Driving 410-1 is connected by optical fiber with external wiring ring flange 48 through walls;Interconnecting device 410-3 and external wiring flange through walls Disk 48 is connected, and obtains the signal of microphone 47, and is transferred to lock-in amplifier 410-2 by signal cable;Lock-in amplifier 410-2 is connected with control module 410-3, realizes control and signal detection.The lock-in amplifier 410-2 is multichannel.
Figure 11 is a kind of aperture embodiment schematic diagram of monitoring device signal excitation module blind flange of the invention.Such as Figure 11 Shown, signal excitation module blind flange 413 is flat structure, and conductor material, preferably brass or aluminum alloy materials are provided with solid Determine hole 413-1, after signal excitation module blind flange 413 and the installation of signal excitation module 42 are fixed, signal excitation module 42 is round Cavity corresponding position is provided with multiple venthole 413-2, and the center line of venthole 413-2 and 42 center line of signal excitation module have There is certain tilt angle, so that near the extended line of the venthole 413-2 of center line and the cushion chamber of signal excitation module 42 The bottom surface of 42-1 is intersected, and the inner surface without the signal excitation chamber 42-2 with signal excitation module 42 intersects.

Claims (8)

1. the device that gas monitoring integration is decomposed in a kind of Discharge Simulation and electric discharge, it is characterised in that: the device includes light It is source and signal processing module (410), sealing gas container (49), wiring ring flange through walls (48), high-voltage wall bushing (45), low Press to wear wall sleeve (44), charging and discharging valve (411), support base (46), high-pressure polar plate (41), low pressure pole plate (43), signal excitation Module (42), collimating optical fibre head (40), microphone (47), insulating supporting (412) and signal excitation module blind flange (413);
Light source and signal processing module (410) are placed on sealing gas container (49) outside, pass through optical fiber and sealing gas container (49) wiring ring flange (48) the through walls connection on, wiring ring flange (48) other side through walls is separately connected collimating optical fibre head (40) With microphone (47);Wiring ring flange (48) through walls is mounted on sealing gas container (49) side wall;
The signal excitation module (42), collimating optical fibre head (40), microphone (47) collectively form gas detection cell, the gas Body detection unit has multiple, and quantity is determined by detection gas type;1 gas detection cell is arranged in every kind of detection gas component, Multiple gas detection cells are around the arrangement in a center of symmetry of low pressure pole plate (43) center line;The signal excitation module blind flange (413) it is arranged on gas detection cell top, i.e. signal excitation module (42), collimating optical fibre head (40), microphone (47) is Multiple, quantity is determined according to detection gas type;
The high-pressure polar plate (41) includes pole plate (41-1) and pin electrode (41-2), center line and the low pressure pole of pin electrode (41-2) The center line of plate (43) and the center line of signal excitation module blind flange (413) are overlapped;The center line of pin electrode (41-2) with Each signal excitation module (42) center line is equidistant;
The signal excitation module blind flange (413) is flat structure, the production of conductor material, preferably brass or aluminium alloy material Material, is provided with outer ring fixation hole (413-1), inner ring fixation hole (413-2), preferably each 6 uniformly distributed;Signal excitation module blind flange (413) it after being fixed with the installation of multiple signal excitation modules (42), is provided with signal excitation module (42) central cavity corresponding position Multiple ventholes (413-3), the center line of the venthole (413-3) are overlapped or put down with signal excitation module (42) center line Row;
Sealing gas container (49) is internal insulation gas filled, and charging and discharging valve (411) is arranged in sealing gas container (49) side On wall, insulating gas is vacuumized and is filled with for sealing gas container (49), high-voltage wall bushing (45) is arranged in sealing gas At the top of container (49), and be connected with high-pressure polar plate (41);Low pressure wall bushing (44) is arranged in sealing gas container (49) bottom, Low pressure pole plate (43) is mounted on sealing gas container (49) inner lower by support base (46), and with low pressure wall bushing (49) Conducting;Signal excitation module (42) is mounted on low pressure pole plate (43) above, and insulating supporting (412) is mounted on signal excitation module (42) above, high-pressure polar plate (41) is mounted on insulating supporting (412) above, and insulate with signal excitation module (42), collimated light Fine head (40) is mounted at the collimating optical fibre head mounting hole (43-1) of low pressure pole plate (43), and signal excitation module (42) center Line, collimating optical fibre head mounting hole (43-1) center line of low pressure pole plate (43), collimating optical fibre head (40) center line three are overlapped;It is micro- Sound device (47) is mounted in the middle part of sliding channel of signal excitation module (42), and microphone (47) center line and collimating optical fibre head (42) Central axis.The low pressure pole plate (43), signal excitation module (42), signal excitation module blind flange (413) conducting, current potential It is identical.
2. the device that gas monitoring integration is decomposed in Discharge Simulation as described in claim 1 and electric discharge, it is characterised in that: described Device work when, high voltage power supply by high-voltage wall bushing (45), low pressure wall bushing (44) give high-pressure polar plate (41), low pressure Pole plate (43) power supply, generates electric discharge at pin electrode (41-2), and insulating gas is excited to generate decomposition, and decomposes gas and pass through letter Number excitation module blind flange (413) free diffusing entering signal excitation module (42) is internal;Light source and signal processing module (410) The laser of sending injects signal excitation module (42) by collimating optical fibre head (40), and beam excitation corresponds to the gas group of absorption frequency Divide and generate sound pressure signal inside signal excitation module (42), microphone (47) detection sound pressure signal simultaneously returns at light source and signal It manages module (410), the concentration of corresponding gas component is obtained by processing signal;It is obtained while generating and decomposing gas and generates gas The concentration of component of body, multiple gas detection cell detections are synchronous to detect various ingredients gas.
3. the device that gas monitoring integration is decomposed in a kind of Discharge Simulation and electric discharge, it is characterised in that: the device includes light It is source and signal processing module (410), sealing gas container (49), wiring ring flange through walls (48), high-voltage wall bushing (45), low Press to wear wall sleeve (44), charging and discharging valve (411), support base (46), high-pressure polar plate (41), low pressure pole plate (43), signal excitation Module (42), collimating optical fibre head (40), microphone (47), insulating supporting (412), signal excitation module blind flange (413);
Light source and signal processing module (410) are placed on sealing gas container (49) outside, pass through optical fiber and sealing gas container (49) wiring ring flange (48) the through walls connection on, wiring ring flange (48) other side through walls is separately connected collimating optical fibre head (40) With microphone (47).Wiring ring flange (48) through walls is mounted on sealing gas container (49) side wall;
The signal excitation module (42), collimating optical fibre head (40), microphone (47) collectively form gas detection cell, the gas Body detection unit has multiple, and quantity is determined by detection gas type, and 1 gas detection cell is arranged in every kind of detection gas component, Multiple gas detection cells are around the arrangement in a center of symmetry of low pressure pole plate (43) center line;The signal excitation module blind flange (413) it is arranged on gas detection cell top, i.e. signal excitation module (42), collimating optical fibre head (40), microphone (47) is Multiple, quantity is determined according to detection gas type;
The high-pressure polar plate (41) includes pole plate (41-1) and pin electrode (41-2), and pin electrode (41-2) is multiple, pin electrode The quantity of (41-2) is identical as gas detection cell quantity, and the geometric dimension of multiple pin electrodes (41-2) is all the same, pin electrode The center line of (41-2) is overlapped with the center line of corresponding signal excitation module (42);
The signal excitation module blind flange (413) is flat structure, the production of conductor material, preferably brass or aluminium alloy material Material, is provided with fixation hole (413-1), fixation hole (413-1) preferably 6, uniformly distributed;Signal excitation module blind flange (413) and signal After excitation module (42) installation is fixed, multiple venthole (413- are provided with signal excitation module (42) central cavity corresponding position 2), the center line of the venthole (413-2) and signal excitation module (42) center line are overlapped or parallel;
Sealing gas container (49) is internal insulation gas filled, and charging and discharging valve (411) is arranged in sealing gas container (49) side On wall, insulating gas is vacuumized and is filled with for sealing gas container (49), high-voltage wall bushing (45) is arranged in sealing gas At the top of container (49), and be connected with high-pressure polar plate (41);Low pressure wall bushing (44) is arranged in sealing gas container (49) bottom, Low pressure pole plate (43) is mounted on sealing gas container (49) inner lower by support base (46), and with low pressure wall bushing (49) Conducting;Signal excitation module (42) is mounted on low pressure pole plate (43) above, and insulating supporting (412) is mounted on signal excitation module (42) above, high-pressure polar plate (41) is mounted on insulating supporting (412) above, and insulate with signal excitation module (42), collimated light Fine head (40) is mounted at the collimating optical fibre head mounting hole (43-1) of low pressure pole plate (43), and signal excitation module (42) center Line, collimating optical fibre head mounting hole (43-1) center line of low pressure pole plate (43), collimating optical fibre head (40) center line three are overlapped;It is micro- Sound device (47) is mounted in the middle part of sliding channel of signal excitation module (42), and microphone (47) center line and collimating optical fibre head (42) Central axis;The low pressure pole plate (43), signal excitation module (42), signal excitation module blind flange (413) conducting, current potential It is identical.
4. the device that gas monitoring integration is decomposed in Discharge Simulation as claimed in claim 3 and electric discharge, it is characterised in that: described Device work when, high voltage power supply by high-voltage wall bushing (45), low pressure wall bushing (44) give high-pressure polar plate (41), low pressure Pole plate (43) power supply, generates electric discharge at pin electrode (41-2), and insulating gas is excited to generate decomposition, and decomposes gas and pass through letter Number excitation module blind flange (413) free diffusing entering signal excitation module (42) is internal;Light source and signal processing module (410) The laser of sending injects signal excitation module (42) by collimating optical fibre head (40), and beam excitation corresponds to the gas group of absorption frequency Divide and generate sound pressure signal inside signal excitation module (42), microphone (47) detection sound pressure signal simultaneously returns at light source and signal It manages module (410), the concentration of corresponding gas component is obtained by processing signal, obtained while generating and decomposing gas and generate gas The concentration of component of body, multiple gas detection cell detections are synchronous to detect various ingredients gas.
5. decomposing the device of gas monitoring integration according to Discharge Simulation described in claim 1 or 3 and electric discharge, feature exists In: it include multiple laser light sources and its driving (410-1), laser light source frequency inside the light source and signal processing module (410) Rate is distributed the spectral absorption peak of corresponding detection gas, lock-in amplifier (410-2), Signal transfer box (410-3), control module (410-4).Laser light source and its driving (410-1) are connected by cable with lock-in amplifier (410-2), are lock-in amplifier (410-2) provides modulating frequency reference signal;Laser light source and its driving (410-1) pass through optical fiber and external connection through walls Blue disk (48) is connected;Signal transfer box (410-3) is connected with external wiring ring flange (48) through walls, obtains microphone (47) Signal, and lock-in amplifier (410-2) is transferred to by signal cable;Lock-in amplifier (410-2) and control module (410-3) It is connected, realizes control and signal detection;The lock-in amplifier (410-2) is multichannel.The laser light source and its driving The quantity of (410-1) is related with detection gas constituent species quantity, and with collimating optical fibre head (40), microphone (47) quantity phase Together.
6. decomposing the device of gas monitoring integration according to Discharge Simulation described in claim 1 or 3 and electric discharge, feature exists In: the signal excitation module (42) is a cylindrical body or rectangular parallelepiped structure, the production of conductor material, preferably copper, aluminium alloy;? The center of cylindrical body or rectangular parallelepiped structure is provided with " dumbbell shape " cavity, is signal excitation chamber (42-2) in the middle part of cavity, is resonant Structure, signal excitation chamber (42-2) meet diameter of phi less than length L;Cavity two sides are cushion chamber (42-1), cushion chamber (42-1) Diameter be greater than signal excitation chamber (42-2), be provided with stomata (42-4) on two sides cushion chamber (42-1) lower sides, realize letter The circulation of number excitation module (42) inside cavity gas and extraneous gas is opened on signal excitation chamber (42-2) side wall in the middle part of cavity Have microphone mounting hole (42-3), microphone mounting hole (42-3) is through-hole, is connected to signal excitation chamber (42-2) inside.
7. decomposing the device of gas monitoring integration according to Discharge Simulation described in claim 1 or 3 and electric discharge, feature exists In: the microphone (47) is electricity microphone or optics microphone.
8. decomposing the device of gas monitoring integration according to Discharge Simulation described in claim 1 or 3 and electric discharge, feature exists In: the center line and signal excitation module (42) center line of the venthole (413-2,413-3) have certain tilt angle, So that the extended line and signal excitation module of the venthole (413-2,413-3) near signal excitation module (42) center line (42) bottom surface of cushion chamber (42-1) is intersected, not with the inner surface phase of the signal excitation chamber (42-2) of signal excitation module (42) It hands over.
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