CN108508312A - A kind of mixed gas electric property measuring device and its measurement method - Google Patents
A kind of mixed gas electric property measuring device and its measurement method Download PDFInfo
- Publication number
- CN108508312A CN108508312A CN201810642174.6A CN201810642174A CN108508312A CN 108508312 A CN108508312 A CN 108508312A CN 201810642174 A CN201810642174 A CN 201810642174A CN 108508312 A CN108508312 A CN 108508312A
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- China
- Prior art keywords
- adjusting screw
- mixed gas
- seal case
- measured
- screw rod
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Links
- 238000000691 measurement method Methods 0.000 title claims abstract description 10
- 239000004020 conductor Substances 0.000 claims abstract description 34
- 230000000740 bleeding effect Effects 0.000 claims abstract description 17
- 238000009413 insulation Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 66
- 229910018503 SF6 Inorganic materials 0.000 description 12
- 238000007789 sealing Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000008246 gaseous mixture Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing 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
- G01R31/1227—Testing 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 of components, parts or materials
- G01R31/1263—Testing 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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1281—Testing 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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of liquids or gases
Abstract
The invention discloses a kind of mixed gas electric property measuring device and its measurement method, which includes the seal case of an insulation and air gauge, intake valve and air bleeding valve on the seal case；The upper and lower side of the seal case is sealed equipped with corresponding and conductive adjusting screw rod, the adjusting screw rod is threadedly coupled with the seal case, one end of two adjusting screw rods is placed in the seal case, and the end that two adjusting screw rods are placed in the seal case is respectively equipped with conductive electric conductor and body to be measured.Mixed gas electric property measuring device of the present invention, can the simple and fast mixed gas progress electric measurement to various types and ratio.
Description
Technical field
The present invention relates to high-voltage insulation techniques field more particularly to a kind of mixed gas electric property measuring device and its surveys
Amount method.
Background technology
Traditional, gas insulated electric apparatus is usually using SF6(sulfur hexafluoride) is used as dielectric, but as environment is protected
The requirement of shield is higher and higher, SF6As strong greenhouse gases, application is restricted；Instead not by two kinds
It is used as the dielectric of gas insulated electric apparatus according to certain content ratio composition mix insulation gas with gas.
For the measurement of the electric property of mixed gas, mainly in the fields such as high pressure；SF6And N2Mixed gas have more
In more advantages, especially insulating properties, the SF of mixed gas is improved6Content can also improve the connecting-disconnecting function of mixed gas.In recent years
Come, SF6And N2Mixed gas engineer application it is more and more, timely in-depth study SF6And N2Mixed gas electrical spy
Property, and actual high voltage electric switch equipment is applied it to as early as possible, there is weight for improving research level of the China in the field
The realistic meaning wanted, but also compare the device for lacking research mixed gas electric property now.
Invention content
Present invention aims to overcome existing technological deficiency, a kind of mixed gas electric property measuring device is provided,
It can the simple and fast mixed gas progress electric measurement to various types and ratio.
In order to solve the above technical problem, the present invention provides a kind of mixed gas electric property measuring devices, including one
The seal case of insulation and air gauge, intake valve and air bleeding valve on the seal case；The seal case it is upper
Lower end is sealed equipped with corresponding and conductive adjusting screw rod, and the adjusting screw rod is threadedly coupled with the seal case, and two
One end of a adjusting screw rod is placed in the seal case, and two adjusting screw rods are placed in the seal case
End be respectively equipped with conductive electric conductor and body to be measured.
Preferably, the electric conductor is bulk, and the adjusting screw rod other end equipped with the electric conductor is for being grounded.
Preferably, the body to be measured is bulk identical with the conduction shape, is equipped with the adjusting spiral shell of the body to be measured
The bar other end is for connecing voltage end.
Preferably, the body to be measured is needle-shaped, and the adjusting screw rod other end equipped with the body to be measured is for connecing voltage end.
Preferably, the body to be measured is spherical, and the adjusting screw rod other end equipped with the body to be measured is for connecing voltage end.
Preferably, it is equipped with the graduated scale being fixed on the seal case beside two adjusting screw rods.
Preferably, the intake valve is check-valves；Two adjusting screw rods are respectively arranged on the seal case upper and lower side
Centre.
Preferably, two adjusting screw rods are respectively arranged on the centre of told seal case upper and lower side；The air gauge and
Intake valve is set to the upper end of the seal case, and the air bleeding valve is set to the lower end of the seal case.
A kind of mixed gas electric property measurement method is additionally provided, is surveyed using mixed gas electric property as described above
Device is measured, is included the following steps：
S1, air bleeding valve is connected to external air extractor, the inside of seal case is evacuated；
S2, to vacuum seal case by intake valve input certain proportion amount electric property to be measured gaseous mixture
Body, and during this amount that gas with various is filled with is controlled and determines by observing barometric numerical value；
S3, the adjusting screw rod other end equipped with the electric conductor is grounded, the adjusting screw rod for being equipped with the body to be measured is another
Termination voltage end is powered by voltage end for body to be measured；
S4, by the distance between two adjusting screw rod constantly regulate electric conductors and body to be measured, find out electric conductor with it is to be measured
Minimum safe distance in the case of being not turned between body, and the numerical value for obtaining the minimum safe distance is measured by graduated scale, from
And obtain the minimum safe distance under the mixed gas.
Preferably, the air extractor is vacuum pump.
Preferably, corresponding feelings can be obtained by the component ratio or constituent species for changing mixed gas in above-mentioned measurement method
The electric property of mixed gas under condition；The electrical resistance of mixed gas in the case of can also being obtained accordingly by the shape of change body to be measured
Energy.
The invention has the advantages that：
Measuring device of the present invention first determines the selection (shape for determining body to be measured) of body to be measured, then will by air bleeding valve
Seal case is evacuated, and inputs the mixed gas of certain proportion amount into the babinet of vacuum by intake valve, then connection is led
The adjusting screw rod outboard end of electric body is grounded, and the adjusting screw rod outboard end connection voltage end of body to be measured is connected, to voltage end for high pressure
(voltage of such as 85kV needs to select institute voltage supplied according to measurement), by two adjusting screw rods adjust electric conductors and body to be measured it
Between distance obtain the electric property of the mixed gas to find out minimum safe distance between the two；It can also be by adopting
With body to be measured of different shapes, go to measure the safe distance of different objects over the ground；The component ratio of mixed gas can also be changed
Either constituent species are to measure the electric property of mixed gas under different proportion or type；Measuring device of the present invention can letter
It is single that electric measurement efficiently is carried out to the mixed gas of various types and ratio, the research and switch safety to environmentally friendly gas away from
From measurement etc. have critically important realistic meaning.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and is constituted part of this application, not
Inappropriate limitation of the present invention is constituted, in the accompanying drawings：
Fig. 1 is the schematic diagram of measuring device in embodiment 1；
Fig. 2 is the schematic diagram of measuring device in embodiment 2；
Fig. 3 is the schematic diagram of measuring device in embodiment 3.
Specific implementation mode
In order to more fully understand the technology contents of the present invention, below in conjunction with attached drawing and specific embodiment to the present invention
It is described further and illustrates.
Embodiment 1
As shown in Figure 1, a kind of mixed gas electric property measuring device shown in the present embodiment, includes the sealing of an insulation
Babinet 1 and air gauge 2, intake valve 3 and air bleeding valve 4 on seal case 1, air gauge 2 are used set on 1 upper end of seal case
In measuring the air pressure in seal case 1, intake valve 3 and air bleeding valve 4 be respectively arranged on the top and bottom of seal case 1 and with sealing
1 inside connection of babinet；The upper and lower side of seal case 1, which seals, is equipped with conductive adjusting screw rod 5, and two adjusting screw rods 5 are opposite
It being correspondingly arranged, adjusting screw rod 5 is threadedly coupled with seal case 1, and one end of two adjusting screw rods 5 is placed in seal case 1, and
The end that two adjusting screw rods 5 are placed in seal case 1 is respectively equipped with conductive electric conductor 6 and body to be measured 7.
Specifically, electric conductor 6 and body to be measured 7 are identical bulk, 5 other end of adjusting screw rod equipped with electric conductor 6 is used for
Ground connection, 5 other end of adjusting screw rod equipped with body 7 to be measured is for connecing voltage end.
Specifically, intake valve 3 is check-valves, gas can only the flowing of direction and be unable to reverse flow, it is ensured that in babinet
Gas will not be reversely discharged by intake valve.
Specifically, two adjusting screw rods 5 are respectively arranged on the centre of 1 upper and lower side of seal case, it is ensured that measurement result it is accurate
Property.
Specifically, being equipped with the graduated scale 8 being vertically fixed on seal case 1 on the side of two adjusting screw rods 5, it is used for
The length that two adjusting screw rods are threaded in or out is measured, and then the distance between electric conductor 6 and body 7 to be measured is conveniently calculated.
Embodiment 2
As shown in Fig. 2, a kind of mixed gas electric property measuring device shown in the present embodiment, includes the sealing of an insulation
Babinet 1 and air gauge 2, intake valve 3 and air bleeding valve 4 on seal case 1, air gauge 2 is for measuring in seal case 1
Air pressure, intake valve 3 and air bleeding valve 4 are respectively arranged on the top and bottom of seal case 1 and are connected to 1 inside of seal case；It is close
The upper and lower side of joint sealing body 1, which seals, is equipped with conductive adjusting screw rod 5, and two adjusting screw rods 5 are correspondingly arranged in opposite directions, adjusting screw rod
5 are threadedly coupled with seal case 1, and one end of two adjusting screw rods 5 is placed in seal case 1, and two adjusting screw rods 5 are placed in
End in seal case 1 is respectively equipped with conductive electric conductor 6 and body to be measured 7.
Specifically, electric conductor 6 is bulk, 5 other end of adjusting screw rod equipped with electric conductor 6 is for being grounded；Body 7 to be measured is needle
Shape is dotted, and 5 other end of adjusting screw rod equipped with body 7 to be measured is for connecing voltage end.
Specifically, intake valve 3 is check-valves, gas can only the flowing of direction and be unable to reverse flow, it is ensured that in babinet
Gas will not be reversely discharged by intake valve.
Specifically, two adjusting screw rods 5 are respectively arranged on the centre of 1 upper and lower side of seal case, it is ensured that measurement result it is accurate
Property.
Specifically, being equipped with the graduated scale 8 being vertically fixed on seal case 1 on the side of two adjusting screw rods 5, it is used for
The length that two adjusting screw rods are threaded in or out is measured, and then the distance between electric conductor 6 and body 7 to be measured is conveniently calculated.
Embodiment 3
As shown in figure 3, a kind of mixed gas electric property measuring device shown in the present embodiment, includes the sealing of an insulation
Babinet 1 and air gauge 2, intake valve 3 and air bleeding valve 4 on seal case 1, air gauge 2 is for measuring in seal case 1
Air pressure, intake valve 3 and air bleeding valve 4 are respectively arranged on the top and bottom of seal case 1 and are connected to 1 inside of seal case；It is close
The upper and lower side of joint sealing body 1, which seals, is equipped with conductive adjusting screw rod 5, and two adjusting screw rods 5 are correspondingly arranged in opposite directions, adjusting screw rod
5 are threadedly coupled with seal case 1, and one end of two adjusting screw rods 5 is placed in seal case 1, and two adjusting screw rods 5 are placed in
End in seal case 1 is respectively equipped with conductive electric conductor 6 and body to be measured 7.
Specifically, electric conductor 6 is bulk, 5 other end of adjusting screw rod equipped with electric conductor 6 is for being grounded；Body 7 to be measured is ball
Shape, 5 other end of adjusting screw rod equipped with body 7 to be measured is for connecing voltage end.
Specifically, intake valve 3 is check-valves, gas can only the flowing of direction and be unable to reverse flow, it is ensured that in babinet
Gas will not be reversely discharged by intake valve.
Specifically, two adjusting screw rods 5 are respectively arranged on the centre of 1 upper and lower side of seal case, it is ensured that measurement result it is accurate
Property.
Specifically, being equipped with the graduated scale 8 being vertically fixed on seal case 1 on the side of two adjusting screw rods 5, it is used for
The length that two adjusting screw rods are threaded in or out is measured, and then the distance between electric conductor 6 and body 7 to be measured is conveniently calculated.
Embodiment 4
A kind of mixed gas electric property measurement method is additionally provided, using the mixing of any one of above-described embodiment 1-3
Outlet openings device for measuring properties measures, and includes the following steps：
S1, air bleeding valve is connected to external vacuum pump, the inside of seal case is evacuated；
S2, to vacuum seal case by intake valve input certain proportion amount electric property to be measured gaseous mixture
Body, and during this amount that gas with various is filled with is controlled and determines by observing barometric numerical value；
S3, the adjusting screw rod other end equipped with the electric conductor is grounded, the adjusting screw rod for being equipped with the body to be measured is another
Termination voltage end is powered by voltage end for body to be measured；
S4, by the distance between two adjusting screw rod constantly regulate electric conductors and body to be measured, find out electric conductor with it is to be measured
Minimum safe distance in the case of being not turned between body, and the numerical value for obtaining the minimum safe distance is measured by graduated scale, from
And obtain the minimum safe distance under the mixed gas.
For example, the insulating gas of environment-friendly metal sealing switch equipment is generally dry air, N2Or SF6Gaseous mixture
Body；Now with a certain proportion of N2And SF6For the mixed gas of composition, the electric property of the mixed gas, specific steps are measured
It is as follows：
(1), the vacuum pumping that first, the gas inside seal case will be first connected to by outside with air bleeding valve by we
Go out, forms vacuum；
(2), by N2It is filled in the seal case of vacuum through intake valve, stops when the numerical value on air gauge is to 0.04Mpa
It is filled with N2；Then again by SF6Gas is filled with through intake valve in seal case, stops being filled with when barometric numerical value is to 0.05Mpa
SF6；
(3), the adjusting screw rod other end ground connection equipped with electric conductor, is equipped with another termination voltage of adjusting screw rod of body to be measured
End；
(4) and then according to the maximum initial distance between electric conductor and body to be measured, by two adjusting screw rods to seal box
It screws in vivo, the distance between electric conductor and body to be measured is first adjusted to by 30mm according to the metering of graduated scale；Then pass through voltage end
The high pressure for adding 85KV to body one end to be measured, see electric conductor whether be connected between body to be measured can measure at a distance from 30mm whether
It is the safe distance of mixed gas；If the two is connected, adjusting screw rod is screwed out outward and tunes up distance between the two, is constantly being tuned up
The minimum safe distance that electric conductor is not turned on body to be measured, i.e. minimum safe distance under the mixed gas are found out in the case of distance
From can obtain the electrical performance of the mixed gas in this way；If the two is not turned on, it is screwed inwardly into adjusting screw rod and turns down between the two
Distance, the minimum safe distance that electric conductor and body to be measured are not turned on, the i.e. mixing are found out in the case where constantly turning distance down
Minimum safe distance under gas can obtain the electrical performance of the mixed gas in this way.
It, can be according to the shape of body to be measured in the case of the mixed gas of same ratio during above-mentioned measurement method
Shape, making a little (i.e. needle-shaped to bulk), spherical surface over the ground, (i.e. bulk is to bulk) etc. is a variety of over the ground for (i.e. spherical to bulk), plate over the ground
The measurement of mode measures the minimum safe distance obtained under the mixed gas respectively, and then show that the when of corresponding to different bodies to be measured is somebody's turn to do
The electric property of mixed gas.
During above-mentioned measurement method, in the case of the body to be measured of same shape, mixed gas can also be changed
It is measured after constituent species or component ratio, to measure under the mixed gas for obtaining different composition ratio or composition type
Minimum safe distance, and then obtain the electric property of corresponding mixed gas.
In other embodiments of the invention, above-mentioned mixed gas electric property measuring device can be additionally used in various mixed gases
Ratio calculate；It is calculated than example as described above, specific calculating process is as follows：First, we will first will be in seal case
The vacuum pumped that the gas in portion is connected to by outside with air bleeding valve forms vacuum, measures measure dress under vacuum state later
The total weight M set；By N2It is filled in the seal case of vacuum through intake valve, stops when the numerical value on air gauge is to 0.04MPa
It is filled with N2, the total weight M1 of measuring device is at this moment measured again；Then again by SF6Gas is filled with through intake valve in seal case, when
Barometric numerical value is filled with SF to stopping when 0.05MPa6, the total weight M2 of measuring device is at this moment measured again；Finally, it is computed
It may know that the total weight of mixed gas is M2-M, N in mixed gas2Weight be M1-M, SF in mixed gas6Weight be M2-
M1 calculates mass percent respectively shared in mixed gas, i.e. N according to the weight of two kinds of gas2Shared quality hundred
Divide than being (M1-M/M2-M) × 100%；SF6Shared mass percent is (M2-M1/M2-M) × 100%.
It is provided for the embodiments of the invention technical solution above to be described in detail, specific case used herein
The principle and embodiment of the embodiment of the present invention are expounded, the explanation of above example is only applicable to help to understand this
The principle of inventive embodiments；Meanwhile for those of ordinary skill in the art, embodiment according to the present invention, in specific embodiment party
There will be changes in formula and application range, in conclusion the content of the present specification should not be construed as limiting the invention.
Claims (10)
1. a kind of mixed gas electric property measuring device, which is characterized in that including one insulation seal case and be set to institute
State air gauge, intake valve and the air bleeding valve on seal case；The upper and lower side of the seal case is sealed equipped with corresponding and can
Conductive adjusting screw rod, the adjusting screw rod are threadedly coupled with the seal case, and one end of two adjusting screw rods is set
In in the seal case, and the end that two adjusting screw rods are placed in the seal case is respectively equipped with conductive conduction
Body and body to be measured.
2. mixed gas electric property measuring device as described in claim 1, which is characterized in that the electric conductor is bulk,
The adjusting screw rod other end equipped with the electric conductor is for being grounded.
3. mixed gas electric property measuring device as claimed in claim 2, which is characterized in that the body to be measured be with it is described
The identical bulk of conductive shape, the adjusting screw rod other end equipped with the body to be measured is for connecing voltage end.
4. mixed gas electric property measuring device as claimed in claim 2, which is characterized in that the body to be measured be it is needle-shaped,
The adjusting screw rod other end equipped with the body to be measured is for connecing voltage end.
5. mixed gas electric property measuring device as claimed in claim 2, which is characterized in that the body to be measured be it is spherical,
The adjusting screw rod other end equipped with the body to be measured is for connecing voltage end.
6. mixed gas electric property measuring device as described in any one in claim 1-5, which is characterized in that two tune
It is equipped with the graduated scale being fixed on the seal case beside section screw rod.
7. mixed gas electric property measuring device as claimed in claim 6, which is characterized in that the intake valve is non-return
Valve；Two adjusting screw rods are respectively arranged on the centre of the seal case upper and lower side.
8. mixed gas electric property measuring device as claimed in claim 7, which is characterized in that two adjusting screw rods point
Not She Yu tell seal case upper and lower side centre；The air gauge and intake valve are set to the upper end of the seal case, institute
State the lower end that air bleeding valve is set to the seal case.
9. a kind of mixed gas electric property measurement method, which is characterized in that using mixed gas as claimed in claim 8 electricity
Gas device for measuring properties, includes the following steps：
S1, air bleeding valve is connected to external air extractor, the inside of seal case is evacuated；
S2, the mixed gas that electric property to be measured is inputted by intake valve to the seal case of vacuum；
S3, the adjusting screw rod other end equipped with the electric conductor is grounded, is equipped with another termination of adjusting screw rod of the body to be measured
Voltage end is powered by voltage end for body to be measured；
S4, by the distance between two adjusting screw rod constantly regulate electric conductors and body to be measured, find out electric conductor and body to be measured it
Between be not turned in the case of minimum safe distance, to obtain the minimum safe distance under the mixed gas.
10. mixed gas electric property measurement method as claimed in claim 9, which is characterized in that the air extractor is true
Sky pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810642174.6A CN108508312A (en) | 2018-06-21 | 2018-06-21 | A kind of mixed gas electric property measuring device and its measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810642174.6A CN108508312A (en) | 2018-06-21 | 2018-06-21 | A kind of mixed gas electric property measuring device and its measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108508312A true CN108508312A (en) | 2018-09-07 |
Family
ID=63403520
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810642174.6A Pending CN108508312A (en) | 2018-06-21 | 2018-06-21 | A kind of mixed gas electric property measuring device and its measurement method |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1700029A (en) * | 2005-04-26 | 2005-11-23 | 何平安 | Insulation gas voltage endurance testing method and testing device |
| CN103913682A (en) * | 2014-03-28 | 2014-07-09 | 重庆大学 | Insulating gas insulating performance experiment system and method thereof applied to electrical equipment |
| CN203825147U (en) * | 2014-04-23 | 2014-09-10 | 沈阳工业大学 | Multifunctional gas discharge and plasma arc detection device |
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