CN108956689A - Cable Superheated steam drier simulator and analogy method - Google Patents
Cable Superheated steam drier simulator and analogy method Download PDFInfo
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- CN108956689A CN108956689A CN201810583713.3A CN201810583713A CN108956689A CN 108956689 A CN108956689 A CN 108956689A CN 201810583713 A CN201810583713 A CN 201810583713A CN 108956689 A CN108956689 A CN 108956689A
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- G01N25/00—Investigating or analyzing materials by the use of thermal means
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Abstract
Disclose a kind of cable Superheated steam drier simulator and analogy method, cable Superheated steam drier simulator includes cylinder body (18), cylinder cap (2), electrode terminal (11) and temperature sensor binding post (13), connect gas mass spectrometry (15) of the air collecting pipe in gas production hole via gas production ball valve (16) connection for thermal decomposition gas component in real-time detection cylinder body, the gas-guide tube one end for connecting air inlet/outlet connects vacuum pump (5) via Vacuum ball valve (4), the other end connects gas source (7) via air inlet ball valve (6), it is located in the confined space for uniformly heated heating element (8), it includes the groove for accommodating cable, the temperature sensor (14) of measurement cable temperature is arranged in the side of heating element (8), it heats electrode (9) and is based on temperature control unit (12) Heating signal heat so that the cable in heating element (8) reaches predetermined temperature.
Description
Technical field
The present invention relates to a kind of cable insulation status on-line monitoring technique field, especially a kind of cable Superheated steam drier mould
Quasi- device and analogy method.
Background technique
Power cable is widely used in electric system, is the basic original part for constituting electric system, the safety of equipment can
It is the key that guarantee that entire electric system operates normally by property.However, real running results show in recent years, cable connector, electricity
The Frequent Accidents such as cable terminal, air insulation switchgear, cable tunnel, specifically show as inducing by overheat catches fire, explodes more
Deng.Power cable ontology or cable accessory because the problems such as construction and installation, product quality and external force are destroyed caused by conductive cable contacts it is bad,
The long-term accumulation of heat of equipment causes abnormal high temperature, and then generates Superheated steam drier, gradually leads to solid insulating material aging, all
It if decomposed, burns, carbonization etc., insulation and electric property decline so that thermal breakdown occur, and then induce the catastrophe failures such as fire.
Superheated steam drier generally can be along with lasting local anomaly high temperature, and occurs inside cable, has concealment high and early stage
The slow feature of temperature rise, there are many methods that can be applied to the measurement of cable outside wall temperature at present, but are all difficult to realize effectively examine
It surveys.
Power cable is made of many kinds of substance, such as high molecular polymer, plasticizer, stabilizer, fire retardant and micro anti-
Oxidant etc..Under the action of overheating fault localized hyperthermia, wire cable insulating material can decompose, various additives
(such as plasticiser, antioxidant etc.) can gradually escape insulating materials under the action of thermal stress, generate as phthalic acid two is pungent
The gaseous products such as ester and 2-Ethylhexyl Alcohol, as Superheated steam drier is further exacerbated by, high molecular polymer molecule in power cable
Chain is broken, and generates such as CO, CO2, NO gaseous product.These characteristic gas and fault point mistake generated in superheating process
There are close ties in thermal fault degree and insulating materials degradation.Therefore, detection cable ontology and splice insulation can be passed through
Material decomposed gas component under different degrees of overheating fault searches out the feature decomposition gas for capableing of Efficient Characterization overheating fault
Parameter illustrates cable insulation material and crosses the mechanism that thermal decomposition generates gas, on this basis to realize cable and cable connector
Equal distribution net equipments overheating fault assessment provides foundation with early warning, promotes the condition monitoring and fault diagnosis side of the relevant devices such as cable
Method design and improvement, are improved to the relevant devices trouble diagnosibility such as cable, are avoided electric system that fire occurs, are exploded and even stop
The serious problems such as electricity.Therefore, the simulator that power cable hot-spot faulty insulator material decomposes is developed, is to realize electric power
The necessary means of system failure detection and Electrical Safety.
The simulator of existing cable Superheated steam drier is mainly tube furnace or hot air aging case, such as GB/T17650.1-
Experimental provision disclosed in the test method of evolved gas mainly includes tube furnace when the material combustion of 1998 cables or optical cable, quartz
Glass tube, drexel bottle, air supply system etc., the major defect of the device are the hydracid gas that can only be measured certain mass material and be discharged
Body total amount, and be use chemical principle as calculation method, cause detection gas type limited, detection accuracy is low；
For another example " IEEE Transactions on Dielectrics and Electrical Insulation " October in 2016
" Effect of Heat-treatment and Samp1e Preparation on Physica1 in volume 23
A Properties of XLPEDC Cable Insulation Material " text, the Hossein Ghorbani of ABB AB
Et al. be a conventional oven to the device that twisted polyethylene cable carried out thermal simulation, the shortcomings that device be inside device with it is outer
Boundary's gas connection, the gas that can not be generated to cable material in superheating process are collected detection.
Disclosed above- mentioned information are used only for enhancing the understanding to background of the present invention in the background section, it is thus possible to
Information comprising not constituting the prior art known to a person of ordinary skill in the art in home.
Summary of the invention
In place of solving above-mentioned the deficiencies in the prior art, the present invention provides a kind of cable Superheated steam drier simulator and mould
Quasi- method, can simulate the cable Superheated steam drier under different degrees of superheat, and acquire what cable material in superheating process discharged
Gas and the data for obtaining gas component and its content, for realize the assessment of the distribution net equipments overheating faults such as cable and early warning provide according to
According to the spy high with accuracy, structure is simple, material discharges gas and its change of component data when capable of obtaining different degrees of superheat
Point.
The purpose of the present invention is be achieved by the following technical programs.
One aspect of the present invention, a kind of cable Superheated steam drier simulator include,
Cylinder body is cylindrical body of the top with flanging and bottom end closure,
Cylinder cap connects the flanging via fixing piece and makes the cylinder cap and institute to be fixed on the top of the cylinder body
It states cylinder body and forms confined space, the cylinder cap seals the cylinder body via O-ring seal, and the central location of the cylinder cap is equipped with the
One through-hole, affixed quartz glass observation window in the first through hole,
Electrode terminal, the second through-hole passed through on the side of the cylinder body via ceramic component connect the electrode
It insulate and seals between terminal and cylinder body, described electrode terminal one end connects the heating electrode being arranged in confined space, separately
One end connection is used for temperature controlled temperature control unit,
Temperature sensor binding post makes described via third through-hole of the ceramic component on the side of the cylinder body
It insulate and seals between temperature sensor binding post and cylinder body, the connection of temperature sensor binding post one end is arranged in confined air
Interior temperature sensor, other end connection are used for temperature controlled temperature control unit,
Gas production hole is located at the side of the cylinder body, and the air collecting pipe for connecting the gas production hole is connected via gas production ball valve to be used
In the gas mass spectrometry for thermally decomposing gas component in real-time detection cylinder body, the air collecting pipe is equipped with the pressure for measuring air pressure
Force snesor,
Air inlet/outlet is located at the other side of the cylinder body, connects gas-guide tube one end of the air inlet/outlet via vacuum
Ball valve connects vacuum pump, and the other end connects gas source via air inlet ball valve,
Heating element is located in the confined space for the uniformly heated heating element comprising accommodates cable
Groove, the temperature sensor for measuring the cable temperature is arranged in the side of heating element, and the heating electrode is based on
The heating signal of temperature control unit heats so that the cable in heating element reaches predetermined temperature.
In the cable Superheated steam drier simulator, the internal diameter of cylinder body is 275~285mm, highly for 300~
310mm, with a thickness of 8~12mm；The hem width degree of turning up is 30~40mm, and with a thickness of 8~12mm, the flanging is uniformly arranged
14~16 are used to connect the tapped through hole of the cylinder cap, and the fixing piece is the bolt across the tapped through hole.
In the cable Superheated steam drier simulator, the aperture of first through hole is 60~80mm, and described second is logical
Hole and/or the aperture of third through-hole are 5~8mm, and the aperture in the gas production hole is 10~16mm, and the aperture of the air inlet/outlet is
16~22mm.
In the cable Superheated steam drier simulator, affixed equally distributed 3~5 height in the bottom end of the cylinder body
Degree is the support leg of 80~120mm.
In the cable Superheated steam drier simulator, the groove diameter is 30~40mm, and depth is 2~4mm.
In the cable Superheated steam drier simulator, the cylinder body and/or cylinder cap are made of stainless steel material, institute
Heating element is stated to be made of ceramics or cathode copper or aluminium.
In the cable Superheated steam drier simulator, the pressure sensor is pressure gauge, and the gas source is sky
Gas cylinder.
In the cable Superheated steam drier simulator, the O-ring seal is annular fluorine rubber ring, the temperature
Control unit is the temperature controller of number display.
In the cable Superheated steam drier simulator, neighbour of the gas mass spectrometry to cable thermal decomposition generation
Dioctyl phthalate, 2-Ethylhexyl Alcohol, CO, CO2 or NO gas detection are to obtain the Information in Mass Spectra and gas content of gas.
According to another aspect of the present invention, a kind of analogy method using the cable Superheated steam drier simulator walks
Suddenly include:
In first step, cable is placed in the groove, after vacuum pump vacuumizes confined space via air inlet/outlet,
Gas source inputs predetermined gas via air inlet/outlet；
In second step, heating electrode heats the cable so that in heating element based on the heating signal of temperature control unit
Reach predetermined temperature, wherein temperature sensor measurement cable temperature is observed cable by quartz glass observation window and thermally decomposed
Journey；
In third step, after heating the predetermined time or light after thermal decomposition reaches predetermined extent, gas mass spectrometry
The Information in Mass Spectra and gas content of thermal decomposition gas and detection thermal decomposition gas are collected via gas production hole.
The invention has the following advantages:
Power cable overheating fault process can be simulated, and realizes that cable insulation material decomposes gas collection and detection, this
Invention solves existing cable Superheated steam drier tube furnace or hot air aging box analog device can not achieve decomposition gas detection
Or detection gas type is limited, the low deficiency of detection accuracy.Apparatus of the present invention can be real by temperature controller and temperature sensor
Existing accurate temperature controlling of the overheating fault simulation heating element at 25~300 DEG C of temperature range, and the reeded thermal fault of top tape
Simulation heating element may be implemented to be evenly heated sample.Apparatus of the present invention structure is simple and safe, application easy to spread.
The present invention can detecte cable insulation material decomposed gas component under different degrees of overheating fault, find out overheat event
The feature decomposition gas parameter of barrier, for realize the distribution net equipments overheating fault such as cable and cable connector assessment with early warning provide according to
According to the design of the relevant devices condition monitoring and fault diagnosis method such as promotion cable and improvement.
The above description is only an overview of the technical scheme of the present invention, in order to make technological means of the invention clearer
Understand, reach the degree that those skilled in the art can be implemented in accordance with the contents of the specification, and in order to allow the present invention
Above and other objects, features and advantages can be more clearly understood, illustrated below with a specific embodiment of the invention
Explanation.
Detailed description of the invention
By reading the detailed description in hereafter preferred embodiment, various other advantages and benefits of the present invention
It will become apparent to those of ordinary skill in the art.Figure of description only for the purpose of illustrating preferred embodiments,
And it is not to be construed as limiting the invention.It should be evident that drawings discussed below is only some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.And throughout the drawings, identical component is presented with like reference characters.
In the accompanying drawings:
Fig. 1 is the structural schematic diagram of cable Superheated steam drier simulator according to an embodiment of the invention；
Fig. 2 is the structural representation of the heating element of cable Superheated steam drier simulator according to an embodiment of the invention
Figure；
The step of Fig. 3 is the analogy method of cable Superheated steam drier simulator according to an embodiment of the invention signal
Figure.
Below in conjunction with drawings and examples, the present invention will be further explained.
Specific embodiment
The specific embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although being shown in attached drawing of the invention
Specific embodiment, it being understood, however, that may be realized in various forms the present invention without that should be limited by embodiments set forth here
System.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be complete by the scope of the present invention
Be communicated to those skilled in the art.
It should be noted that having used some vocabulary in the specification and claims to censure specific components.Ability
Field technique personnel it would be appreciated that, technical staff may call the same component with different nouns.This specification and right
It is required that not in such a way that the difference of noun is as component is distinguished, but with the difference of component functionally as differentiation
Criterion."comprising" or " comprising " as mentioned throughout the specification and claims are an open language, therefore should be solved
It is interpreted into " including but not limited to ".Specification subsequent descriptions are to implement better embodiment of the invention, so the description be with
For the purpose of the rule of specification, the range that is not intended to limit the invention.Protection scope of the present invention is when the appended right of view
It is required that subject to institute's defender.
In order to facilitate understanding of embodiments of the present invention, further by taking specific embodiment as an example below in conjunction with attached drawing to be solved
Explanation is released, and each attached drawing does not constitute the restriction to the embodiment of the present invention.
In order to better understand, Fig. 1 is the knot of cable Superheated steam drier simulator according to an embodiment of the invention
Structure schematic diagram, as shown in Figure 1, a kind of cable Superheated steam drier simulator includes,
Cylinder body 18 is cylindrical body of the top with flanging and bottom end closure,
Cylinder cap 2 connects the flanging via fixing piece to be fixed on the top of the cylinder body 18 and make the cylinder cap 2
Confined space is formed with the cylinder body 18, the cylinder cap 2 seals the cylinder body 18 via 0 type sealing ring 3, in the cylinder cap 2
Position is entreated to be equipped with first through hole, affixed quartz glass observation window 1 in the first through hole,
Electrode terminal 11, the second through-hole passed through on the side of the cylinder body 18 via ceramic component make the electricity
It insulate and seals between pole binding post 11 and cylinder body 18,11 one end of electrode terminal connection is arranged in adding in confined space
Thermode 9, other end connection are used for temperature controlled temperature control unit 12,
Temperature sensor binding post 13, the third through-hole passed through on the side of the cylinder body 18 via ceramic component make
It insulate and seals between the temperature sensor binding post 13 and cylinder body 18, described 13 one end of temperature sensor binding post connects cloth
The temperature sensor 14 in confined space is set, other end connection is used for temperature controlled temperature control unit 12,
Gas production hole is located at the side of the cylinder body 18, and the air collecting pipe for connecting the gas production hole connects via gas production ball valve 16
The gas mass spectrometry 15 for thermally decomposing gas component in real-time detection cylinder body is connect, the air collecting pipe is equipped with for measuring gas
The pressure sensor 17 of pressure,
Air inlet/outlet is located at the other side of the cylinder body 18, connects gas-guide tube one end of the air inlet/outlet via true
Empty ball valve 4 connects vacuum pump 5, and the other end connects gas source 7 via air inlet ball valve 6,
Heating element 8 is located in the confined space for the uniformly heated heating element 8 comprising accommodates electricity
The groove of cable, the temperature sensor 14 for measuring the cable temperature are arranged in the side of heating element 8, the heating electrode
9 heating signals based on temperature control unit 12 heat so that the cable in heating element 8 reaches predetermined temperature.
For a further understanding of the present invention, in one embodiment, a kind of cable Superheated steam drier simulator includes shell
Body, intelligent digital temperature controller, overheating fault simulation heating element, vacuum pump, gas mass spectrometry.The shell, by cylinder body
It is formed with cylinder cap.The material of the cylinder body is stainless steel, and the shape of the cylinder body is cylinder of the top with flanging, bottom end closure
Shape.The internal diameter of the cylinder body is 275~285mm, is highly 300~310mm, with a thickness of 8~12mm；The cylinder body turns up hem width
Degree is 30~40mm, with a thickness of 8~12mm, and 14~16 tapped through holes is uniformly arranged on flanging, for being connected and fixed
The cylinder cap.The through-hole that one aperture is 5~8mm is set in the lower part of the one side wall of the cylinder body, and will by ceramic component
One electrode terminal is fixed in through-holes, to connect temperature sensor output end.It is arranged in the lower part of the side wall of the cylinder body
Two apertures are the through-hole of 5~8mm, and two electrode terminals are fixed in the two through-holes by ceramic component respectively,
To guarantee insulation and sealing between electrode terminal and cylinder body, and connect overheating fault simulation heating element heating electrode.
On the top of another side wall of the cylinder body, through-hole, that is, gas production hole that one aperture is 10~16mm, gas production ball valve one end are set
It is connected by Stainless steel tee pipe with gas production hole and pressure gauge, the pressure gauge is for monitoring and showing the intracorporal vacuum of the cylinder
Gas pressure after degree and inflation；The other end of the gas production ball valve is connected by plastic catheter with gas mass spectrometry, is used for
It realizes and the real-time monitoring and data of decomposed gas component in the cylinder body is extracted；In the lower part of the cylinder body other side, setting
One aperture is through-hole, that is, air inlet/outlet of 16~22mm, and the vacuum pump is connected by Vacuum ball valve with the air inlet/outlet, is used
To vacuumize to cylinder interior realization, the air steel cylinder is connected by air inlet ball valve with the air inlet/outlet, to realize pair
Clean dry air is filled in cylinder body.On the outer end of the bottom surface of the cylinder body uniformly 3~5 height of affixed setting be 80~
The support leg is placed on the ground by the support leg of 120mm, to support and protect cylinder body.The diameter of the cylinder cap and institute
The outer diameter for stating cylinder body top flanging matches, and corresponds on the flanging of the cylinder body top in the cylinder cap edge
At 14~16 tapped through holes, it is also uniformly arranged 14~16 tapped through holes.The cylinder cap passes through 14~16 tapped through holes
It connect with bolt and 0 type sealing ring with cylinder body top flanging, to guarantee the leakproofness of the cylinder body, and can hold
Air pressure change in being put to the test.The circular through hole for being 60~80mm in center one diameter of setting of the cylinder cap, in the through-hole
In affixed quartz glass lid, to observe overheating fault simulation process.
The input terminal of digital readout temperature controller is electrically connected by air switch breaker with the city of 220V/50Hz, the digital display
The temperature control end of temperature controller is connected by conducting wire with the overheating fault simulation heating element temperature sensor, is realized and is passed to temperature
The reception for the overheating fault simulation heating component temperature signal that sensor detects, the intelligent digital temperature controller it is defeated
The electrode on side wall that outlet passes through the tank body is connected with the heating motor of the overheating fault simulation heating element, real
Existing temp of heating element control.
The overheating fault simulation heating component shape is that diameter is 50~60mm, is highly the cylindrical body of 8~10mm,
To simulate overheating fault overheating, and the overheating fault simulation heating element crests be arranged a diameter be 30~
40mm depth is the groove of 2~4mm, to place insulating materials sample, and realizes and is evenly heated to sample；The overheat
The material of fault simulation heating element is or ceramics or cathode copper or aluminium；The side of the overheating fault simulation heating element is set
Heating electrode is connected by insulated conductor with two electrode terminal inner opposite ends of the cylinder side wall there are two setting, described
The other end of two electrode terminals of cylinder side wall be connected with the intelligent digital temperature controller output end, realize overheat therefore
Hinder the heating process of simulation heating element；A temperature sensing is arranged in the side of the overheating fault simulation heating element simultaneously
Device, the temperature sensor binding post and the intelligent digital temperature controller that the temperature sensor is arranged by the cylinder side wall
Temperature control end is connected, and realizes the control to overheating fault simulation heating component temperature.
The gas chromatograph-mass spectrometer is used to carry out HIGH SENSITIVITY AND HIGH PRECISION to the gas of complicated component and trace quickly to detect,
The Information in Mass Spectra of each component in sample, retention time information and content can be obtained, may be implemented in cable superheating process
The quick detection of such as dioctyl phthalate, 2-Ethylhexyl Alcohol, C0, CO2, NO ppm grade gas of release, acquisition cable mistake
Thermal fault discharges gas and decomposes gas information.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the internal diameter of cylinder body 18 is 275~
285mm is highly 300~310mm, with a thickness of 8~12mm；The hem width degree of turning up is 30~40mm, with a thickness of 8~12mm,
The flanging is uniformly arranged 14~16 for connecting the tapped through hole of the cylinder cap, and the fixing piece is across the spiral shell
The bolt of line through-hole.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the aperture of first through hole is 60~
The aperture of 80mm, second through-hole and/or third through-hole is 5~8mm, and the aperture in the gas production hole is 10~16mm, described
The aperture of air inlet/outlet is 16~22mm.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the bottom end of the cylinder body 18 is affixed
Equally distributed 3~5 height are the support leg 10 of 80~120mm.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the groove diameter be 30~
40mm, depth are 2~4mm.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the cylinder body 18 and/or cylinder cap 2
It is made of stainless steel material, the heating element 8 is made of ceramics or cathode copper or aluminium.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the pressure sensor 17 is pressure
Power table, the gas source 7 are air steel cylinder.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the O-ring seal 3 is annular
Fluorine rubber ring, the temperature control unit 12 are the temperature controller of number display.
In the preferred embodiment of cable Superheated steam drier simulator of the present invention, the gas mass spectrometry 15 is right
Cable thermally decomposes the dioctyl phthalate, 2-Ethylhexyl Alcohol, CO, CO2 or NO gas detection of generation to obtain the matter of gas
Spectrum information and gas content.
For a further understanding of the present invention,
Embodiment 1
As depicted in figs. 1 and 2, cable Superheated steam drier simulator includes quartz glass observation window 1, cylinder cap 2, cylinder body
18, heating element 8, vacuum pump 5, gas mass spectrometry 15 that digital readout temperature controller 12, overheating fault are simulated.
The material of the cylinder body 18 is stainless steel, and the shape of the cylinder body 18 is circle of the top with flanging, bottom end closure
Cylindricality.The internal diameter of the cylinder body 18 is 275mm, is highly 300mm, with a thickness of 8mm；The cylinder body 18 hem width degree of turning up is
30mm with a thickness of 8mm, and is uniformly arranged 14 tapped through holes on flanging, for being connected and fixed the cylinder cap 2.Institute
The through-hole that an aperture is 5mm is arranged in the middle part for stating the one side wall of cylinder body 18, and is consolidated an electrode terminal 13 by ceramic component
Determine in through-holes, to connect 14 output end of temperature sensor.In the lower part of the one side wall of the cylinder body 18, two apertures are set
For the through-hole of 5mm, and two electrode terminals 11 are fixed in the two through-holes by ceramic component respectively, to guarantee electricity
Insulation and sealing between pole binding post 11 and cylinder body 18, and connect overheating fault simulation heating element heating electrode 9.Described
Through-hole, that is, gas production hole that an aperture is 6mm is arranged in the top of another side wall of cylinder body 18, and described 16 one end of gas production ball valve is not by
Rust steel tee tube is connected with gas production hole and pressure gauge 17, and the pressure gauge 17 is used to monitoring and showing the vacuum in the cylinder body 18
Gas pressure after degree and inflation；The other end of the gas production ball valve 16 is connected by plastic catheter with gas mass spectrometry 15,
For realizing the real-time monitoring and data extraction to decomposed gas component in the cylinder body 18；Under 18 other side of cylinder body
Side, through-hole, that is, air inlet/outlet that one aperture of setting is 16mm, the vacuum pump 5 pass through Vacuum ball valve 4 and the air inlet/outlet phase
Even, to vacuumize to realizing inside cylinder body 18, and the air steel cylinder 7 passes through air inlet ball valve 6 and is connected with the air inlet/outlet,
To realize to being filled with clean dry air in cylinder body 18.The uniformly affixed setting 3 on the outer end of the bottom surface of the cylinder body 18
Height is the support leg 10 of 80mm, the support leg 10 is placed on the ground, to support and protect cylinder body 18.
The diameter of the cylinder cap 2 and the outer diameter of the 18 top flanging of cylinder body match, and in 2 edge of cylinder cap
It corresponds at 14 tapped through holes on the 18 top flanging of cylinder body, is also uniformly arranged 14 tapped through holes.Described
Cylinder cap 2 is connect by 14 tapped through holes and bolt and O-ring seal 3 with the 18 top flanging of cylinder body, to protect
The leakproofness of the card cylinder body 18, and the air pressure change in test can be born.It is arranged always in the center of the cylinder cap 2
Diameter is the circular through hole of 60mm, in the through hole affixed quartz glass observation window 1, to observe overheating fault simulation process.
The input terminal of the digital readout temperature controller 12 is electrically connected by air switch breaker with the city of 220V/50Hz, institute
The temperature control end for the intelligent digital temperature controller 12 stated passes through conducting wire and the overheating fault simulation heating element temperature sensor 14
It is connected, realizes the reception of 8 temperature signal of overheating fault simulation heating element detected to temperature sensor, it is described
The electrode 11 on side wall that the output end of intelligent digital temperature controller 12 passes through the tank body adds with the overheating fault simulation
Thermal element heats electrode 9 and is connected, and realizes and controls the temperature of heating element 8.
The shape of the overheating fault simulation heating element 8 is that diameter is 50mm, is highly the cylindrical body of 8mm, to
Overheating fault overheating is simulated, and it is 30mm depth that a diameter, which is arranged, at the top of the overheating fault simulation heating element 8
For the groove of 2mm, to place insulating materials sample, and realizes and sample is evenly heated；The overheating fault simulation adds
The material of thermal element 8 is or ceramics or cathode copper or aluminium；There are two the side settings of the overheating fault simulation heating element 8
Heating electrode 9 is connected by insulated conductor with two 11 inner opposite ends of electrode terminal of 18 side wall of cylinder body, described
The other end of two electrode terminals 11 of 18 side wall of cylinder body is connected with 12 output end of digital readout temperature controller, realizes overheat event
Hinder the heating process of simulation heating element 8；A temperature sensing is arranged in the side of the overheating fault simulation heating element 8 simultaneously
Device 14, temperature sensor binding post 13 and the digital display temperature of the temperature sensor 14 by 18 side wall of cylinder body setting
It controls 12 temperature control end of instrument to be connected, realizes the control to 8 temperature of overheating fault simulation heating element.
The gas chromatograph-mass spectrometer 15 is for complicated component and trace gas carries out HIGH SENSITIVITY AND HIGH PRECISION and quickly detects, can
To obtain the Information in Mass Spectra of each component in sample, retention time information and content, may be implemented to release in cable superheating process
The quick detection of such as dioctyl phthalate put, 2-Ethylhexyl Alcohol, CO, CO2, N0 ppm grades of gas, obtains cable overheat
Failure discharges gas and decomposes gas information.
Embodiment 2
Cable Superheated steam drier simulator is the same as embodiment 1, in which: the internal diameter of the cylinder body 18 is 280mm, is highly
305mm, with a thickness of 10mm；The cylinder body 18 turns up hem width degree for 35mm, with a thickness of 10mm, and 15 is uniformly arranged on flanging
A tapped through hole.The through-hole that an aperture is 7mm is arranged in the middle part of the one side wall of the cylinder body 18.In the one side wall of the cylinder body 18
Lower part the through-hole that two apertures are 7mm is set.The through-hole that an aperture is 6mm, which is arranged, on the top of 18 one side wall of cylinder body is
Gas production hole；The lower section of 18 other side of cylinder body, through-hole, that is, air inlet/outlet that one aperture of setting is 18mm.The bottom of the cylinder body 18
The support leg 10 that uniformly affixed 4 height of setting are 100mm on the outer end in face.The diameter of the cylinder cap 2 and the cylinder body 18 push up
The outer diameter of end flanging matches, and is uniformly arranged 15 tapped through holes.Center one quartz glass of setting of the cylinder cap 2 is seen
Examine window 1, diameter 70mm.
Embodiment 3
Cable Superheated steam drier simulator, with embodiment 1, in which: the internal diameter of the cylinder body 18 is 285mm, is highly
310mm, with a thickness of 12mm；The cylinder body 18 turns up hem width degree for 40mm, with a thickness of 12mm, and 16 is uniformly arranged on flanging
A tapped through hole.The through-hole that an aperture is 8mm is arranged in the middle part of the one side wall of the cylinder body 18.In the one side wall of the cylinder body 18
Lower part the through-hole that two apertures are 8mm is set.On the top of 18 one side wall of cylinder body, the through-hole that one aperture is 10mm is set
That is gas production hole；The lower section of 18 other side of cylinder body, through-hole, that is, air inlet/outlet that one aperture of setting is 22mm.The cylinder body 18
The support leg 10 that uniformly affixed 5 height of setting are 120mm on the outer end of bottom surface.The diameter of the cylinder cap 2 and the cylinder body 18
The outer diameter of top flanging matches, and is uniformly arranged 16 tapped through holes.One quartz glass of center setting of the cylinder cap 2
Observation window 1, diameter 80mm.
The step of Fig. 3 is the analogy method of cable Superheated steam drier simulator according to an embodiment of the invention signal
Figure, a kind of analogy method step using the cable Superheated steam drier simulator include:
In first step S1, cable is placed in the groove, and vacuum pump 5 vacuumizes confined space via air inlet/outlet
Afterwards, gas source 7 inputs predetermined gas via air inlet/outlet；
In second step S2, heating electrode 9 is heated based on the heating signal of temperature control unit 12 so that in heating element 8
Cable reach predetermined temperature, wherein temperature sensor 14 measure cable temperature, pass through quartz glass observation window 1 observe cable
Thermal decomposition process；
In third step S3, after heating the predetermined time or light after thermal decomposition reaches predetermined extent, gas chromatography mass spectrometry
Instrument 15 collects the Information in Mass Spectra and gas content of thermal decomposition gas and detection thermal decomposition gas via gas production hole.
Although embodiment of the present invention is described in conjunction with attached drawing above, the invention is not limited to above-mentioned
Specific embodiments and applications field, above-mentioned specific embodiment are only schematical, directiveness, rather than restricted
's.Those skilled in the art are under the enlightenment of this specification and in the range for not departing from the claims in the present invention and being protected
In the case where, a variety of forms can also be made, these belong to the column of protection of the invention.
Claims (10)
1. a kind of cable Superheated steam drier simulator, which is characterized in that cable Superheated steam drier simulator includes,
Cylinder body (18) is cylindrical body of the top with flanging and bottom end closure,
Cylinder cap (2) connects the flanging via fixing piece and makes the cylinder cap with the top for being fixed on the cylinder body (18)
(2) and the cylinder body (18) forms confined space, and the cylinder cap (2) seals the cylinder body (18), institute via 0 type sealing ring (3)
The central location for stating cylinder cap (2) is equipped with first through hole, affixed quartz glass observation window (1) in the first through hole,
Electrode terminal (11), the second through-hole passed through on the side of the cylinder body (18) via ceramic component make the electricity
It insulate and seals between pole binding post (11) and cylinder body (18), electrode terminal (11) one end connection is arranged in confined space
Interior heating electrode (9), other end connection are used for temperature controlled temperature control unit (12),
Temperature sensor binding post (13), the third through-hole passed through on the side of the cylinder body (18) via ceramic component make
It insulate and seals between the temperature sensor binding post (13) and cylinder body (18), described temperature sensor binding post (13) one end
The temperature sensor (14) being arranged in confined space is connected, other end connection is used for temperature controlled temperature control unit
(12),
Gas production hole is located at the side of the cylinder body (18), and the air collecting pipe for connecting the gas production hole connects via gas production ball valve (16)
The gas mass spectrometry (15) for thermally decomposing gas component in real-time detection cylinder body is connect, the air collecting pipe is equipped with for measuring
The pressure sensor (17) of air pressure,
Air inlet/outlet is located at the other side of the cylinder body (18), connects gas-guide tube one end of the air inlet/outlet via vacuum
Ball valve (4) connects vacuum pump (5), and the other end connects gas source (7) via air inlet ball valve (6),
Heating element (8) is located in the confined space for the uniformly heated heating element (8) comprising accommodates electricity
The groove of cable, the temperature sensor (14) for measuring the cable temperature are arranged in the side of heating element (8), the heating
The heating signal that electrode (9) is based on temperature control unit (12) heats so that the cable in heating element (8) reaches predetermined temperature.
2. cable Superheated steam drier simulator according to claim 1, it is characterised in that: it is preferred, cylinder body (18)
Internal diameter is 275~285mm, is highly 300~310mm, with a thickness of 8~12mm；The hem width degree of turning up is 30~40mm, thickness
For 8~12mm, the flanging is uniformly arranged 14~16 for connecting the tapped through hole of the cylinder cap, and the fixing piece is
Across the bolt of the tapped through hole.
3. cable Superheated steam drier simulator according to claim 1, it is characterised in that: the aperture of first through hole is 60
The aperture of~80mm, second through-hole and/or third through-hole is 5~8mm, and the aperture in the gas production hole is 10~16mm, institute
The aperture for stating air inlet/outlet is 16~22mm.
4. cable Superheated steam drier simulator according to claim 1, it is characterised in that: the bottom end of the cylinder body (18)
Affixed equally distributed 3~5 height are the support leg (10) of 80~120mm.
5. cable Superheated steam drier simulator according to claim 1, it is characterised in that: the groove diameter be 30~
40mm, depth are 2~4mm.
6. cable Superheated steam drier simulator according to claim 1, it is characterised in that: the cylinder body (18) and/or
Cylinder cap (2) is made of stainless steel material, and the heating element (8) is made of ceramics or cathode copper or aluminium.
7. cable Superheated steam drier simulator according to claim 1, it is characterised in that: the pressure sensor (17)
For pressure gauge, the gas source (7) is air steel cylinder.
8. cable Superheated steam drier simulator according to claim 1, it is characterised in that: the 0 type sealing ring (3) is
Annular fluorine rubber ring, the temperature control unit (12) are the temperature controller of number display.
9. cable Superheated steam drier simulator according to claim 1, it is characterised in that: the gas mass spectrometry
(15) to the dioctyl phthalate, 2-Ethylhexyl Alcohol, C0, C02 or NO gas detection of cable thermal decomposition generation to obtain gas
The Information in Mass Spectra and gas content of body.
10. a kind of analogy method using the cable Superheated steam drier simulator of any of claims 1-9, special
Sign is: its step includes:
In first step (S1), cable is placed in the groove, and vacuum pump (5) vacuumizes confined space via air inlet/outlet
Afterwards, gas source (7) inputs predetermined gas via air inlet/outlet；
In second step (S2), the heating signal that heating electrode (9) is based on temperature control unit (12) is heated so that heating element
(8) cable in reaches predetermined temperature, wherein temperature sensor (14) measures cable temperature, passes through quartz glass observation window (1)
Observe cable thermal decomposition process；
In third step (S3), after heating the predetermined time or light after thermal decomposition reaches predetermined extent, gas mass spectrometry
(15) Information in Mass Spectra and gas content of thermal decomposition gas and detection thermal decomposition gas are collected via gas production hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583713.3A CN108956689A (en) | 2018-06-07 | 2018-06-07 | Cable Superheated steam drier simulator and analogy method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810583713.3A CN108956689A (en) | 2018-06-07 | 2018-06-07 | Cable Superheated steam drier simulator and analogy method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108956689A true CN108956689A (en) | 2018-12-07 |
Family
ID=64493694
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810583713.3A Pending CN108956689A (en) | 2018-06-07 | 2018-06-07 | Cable Superheated steam drier simulator and analogy method |
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| CN110470339A (en) * | 2019-08-05 | 2019-11-19 | 国网湖南省电力有限公司 | A kind of portable cable integrated detecting device and its application method |
| CN110568326A (en) * | 2019-09-02 | 2019-12-13 | 国网甘肃省电力公司电力科学研究院 | Electric-thermal combined aging and gas decomposition test device and application method |
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| CN111812148A (en) * | 2020-07-16 | 2020-10-23 | 重庆科技学院 | Thermal stability test method and system for PVC (polyvinyl chloride) of high-voltage cable outer sheath |
| CN113406488A (en) * | 2021-06-16 | 2021-09-17 | 国网安徽省电力有限公司电力科学研究院 | GIS internal overheating fault test device and test method |
| CN113685722A (en) * | 2021-08-11 | 2021-11-23 | 广西电网有限责任公司电力科学研究院 | Insulating material aging gas collecting device in power switch cabinet |
| CN113685722B (en) * | 2021-08-11 | 2023-10-20 | 广西电网有限责任公司电力科学研究院 | Insulating material ageing gas collection device in power switch cabinet |
| CN113866220A (en) * | 2021-09-26 | 2021-12-31 | 上海钧嵌传感技术有限公司 | Cable welding point fault monitoring device and method |
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Application publication date: 20181207 |