CN107589353A - Insulator rain test device and salt fog test method - Google Patents
Insulator rain test device and salt fog test method Download PDFInfo
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- CN107589353A CN107589353A CN201710841708.3A CN201710841708A CN107589353A CN 107589353 A CN107589353 A CN 107589353A CN 201710841708 A CN201710841708 A CN 201710841708A CN 107589353 A CN107589353 A CN 107589353A
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Abstract
The present invention relates to a kind of insulator rain test device and salt fog test method, wherein device includes：Horizontal is drenched with rain row, adjustable water supply installation and testing stand, and adjustable water supply installation delivery port and the horizontal water inlet pipe mouth set on row of drenching with rain connects, and the horizontal row that drenches with rain is arranged at the testing stand top；Wherein, the horizontal row that drenches with rain is provided with the adjustable shower nozzle in direction that multiple rows of one end connects with water route, and the drench with rain water inlet pipe mouth of row of horizontal is provided with the first water valve；Testing stand is used to place insulator to be measured, and when carrying out salt fog test, horizontal drenches with rain to arrange is sprayed water to the insulator on testing stand, simulates condition of drenching with rain.Above-mentioned insulator rain test device, enable to whole horizontal drench with rain row equably spray on insulator to be measured of the water droplet to testing stand, to insulator carry out salt fog test, so as to the situation that in test analog insulation is uniformly drenched with rain.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of uniform rain test device of insulator and salt fog test
Method.
Background technology
In extra-high voltage DC transmission system, the reliability service of extra-high voltage transformer plays key effect.For extra-high
The design of buckling electric equipment external insulation is, it is necessary to consider that pollution flashover and dirty rain dodge both sides performance.Existing experience shows that dirty rain dodges
Cause one of major reason of current conversion station external insulation flashover, it is therefore desirable to carry out the research that insulator dirt rain dodges characteristic, be extra-high
The design of DC transmission system current conversion station external insulation is pressed to provide reference.
In order to detect, the anti-rain of insulator dodges and anti-soil rain dodges ability, it is necessary to design the rain test device of insulator, mould
Intend the situation of drenching with rain of insulator, the anti-rain of insulator is dodged and anti-soil rain dodges ability and tested.
However, current insulator rain test device, dodges in Artificial Rain and dirty rain is dodged in experiment, it is impossible to simulation uniformly leaching
The situation of rain.
The content of the invention
Based on this, it is necessary to can not simulate the problem of uniformly drenching with rain situation for conventional insulators rain test device, carry
For a kind of insulator rain test device and salt fog test method.
A kind of insulator rain test device, including：Horizontal is drenched with rain row, adjustable water supply installation and testing stand, wherein, institute
State adjustable water supply installation delivery port and the horizontal water inlet pipe mouth set on row of drenching with rain to connect, the horizontal row that drenches with rain is arranged at
Above the testing stand；
Wherein, the horizontal, which drenches with rain to arrange, is provided with the adjustable shower nozzle in direction that multiple rows of one end connects with water route, the water
The drench with rain water inlet pipe mouth of row of flat is provided with the first water valve；The testing stand is used to place insulator to be measured, is carrying out examination of drenching with rain
When testing, the horizontal drenches with rain to arrange is sprayed water to the insulator on the testing stand, simulates condition of drenching with rain.
Above-mentioned insulator rain test device, the water that the multiple water tank conveys limited amount by water yield control system flow into
Horizontal is drenched with rain in row, the water speed and hydraulic pressure of the upper each row's shower nozzle water spray of row of being drenched with rain by the first water valve controlled level formula, while side
To adjustable shower nozzle by set direction spray water, enable to whole horizontal drench with rain row equably spray water droplet to the examination
Test on the insulator to be measured on platform, salt fog test is carried out to insulator, uniformly drenched with rain so as in test analog insulation
Situation.
A kind of salt fog test method of insulator rain test device as described above, comprises the following steps：
In on-test, insulator to be measured is placed on testing stand, the second water valve is opened, adjusts the water rate control
System so that the horizontal, which is drenched with rain, arranges the insulator that shower nozzle sprinkling region is completely covered on the testing stand；
The water supply quality of multiple water tanks is adjusted, what setting insulator was drenched with rain stains condition；
Adjust the horizontal to drench with rain the first water valve of row, the amount of drenching with rain of insulator is set；
The sprinkling direction of each shower nozzle is adjusted, the angle of drenching with rain of insulator is set；
It is described stain condition, the amount of drenching with rain and angle of drenching with rain under to insulator carry out salt fog test.
The test method of above-mentioned insulator rain test device, insulator to be measured is placed on testing stand, opens second
Water valve, the water inflow horizontal that the multiple water tank conveys limited amount by water yield control system are drenched with rain in row, pass through the first water
Valve controlled level formula, which is drenched with rain, arranges the water speed and hydraulic pressure of upper each row's shower nozzle water spray, while the adjustable shower nozzle in direction is sprayed by the direction set
Water, enable to whole horizontal drench with rain row equably spray on insulator to be measured of the water droplet to the testing stand, it is right
Insulator carries out salt fog test, so as to the situation that in test analog insulation is uniformly drenched with rain, by adjusting multiple water tanks
Water supply quality, set what insulator drenched with rain to stain condition, row's setting amount of drenching with rain and drenched with rain angle by adjusting the horizontal and drenching with rain
Degree, it is described stain condition, the amount of drenching with rain and angle of drenching with rain under to insulator carry out salt fog test, can simulate what is uniformly drenched with rain
Situation.
Brief description of the drawings
Fig. 1 is insulator rain test device schematic diagram；
Fig. 2 drenches with rain for the horizontal of one embodiment arranges structural representation；
Fig. 3 drenches with rain for the horizontal of one embodiment arranges stereogram；
Fig. 4 is the adjustable water supply installation stereogram of one embodiment；
Fig. 5 is the adjustable water supply installation structural representation of one embodiment；
Fig. 6 is the testing stand stereogram of one embodiment；
Fig. 7 is the salt fog test method flow diagram of insulator rain test device；
Fig. 8 is the fit correlation schematic diagram of the withstanding voltage under different dry arcing distances.
Embodiment
The embodiment of insulator rain test device to the present invention and salt fog test method below in conjunction with the accompanying drawings
Describe in detail.
It is insulator rain test device schematic diagram with reference to figure 1 and Fig. 2, Fig. 1, Fig. 2 is that the horizontal of one embodiment is drenched
Rain arranges 10 structural representations, and the insulator rain test device includes：
Horizontal is drenched with rain row 10, adjustable water supply installation 20 and testing stand 30, wherein, the adjustable delivery port of water supply installation 20
Connected with located at the drench with rain water inlet pipe mouth 101 of 10 one end of row of horizontal, the horizontal row that drenches with rain 10 is arranged at the testing stand
30 tops；
Wherein, the horizontal row that drenches with rain 10 is provided with the adjustable shower nozzle 102 in direction that multiple rows of one end connects with water route, institute
State horizontal drench with rain row 10 water inlet pipe mouth 101 be provided with the first water valve 103；
The testing stand 30 is used to place insulator to be measured, and when carrying out salt fog test, the horizontal is drenched with rain row 10
Sprayed water to the insulator on the testing stand 30, simulate condition of drenching with rain.
Above-mentioned insulator rain test device, the multiple water tank 210 convey limited amount by water yield control system 220
Water flows into horizontal and drenched with rain in row 10, by the controlled level formula of the first water valve 103 drench with rain on row 10 water speed of each row's shower nozzle 102 and
Hydraulic pressure, while the adjustable shower nozzle 102 in direction is by the direction water spray set, the whole horizontal row that drenches with rain is enabled to 10 equably to spray
Spill on insulator to be measured of the water droplet to the testing stand 30, salt fog test is carried out to insulator, so as in test
The situation that analog insulation is uniformly drenched with rain.
With reference to figure 3, Fig. 3 drenches with rain for the horizontal of one embodiment arranges 10 stereograms, in an optional embodiment, institute
Stating the horizontal row that drenches with rain 10 includes：The master that first long tube 104, the second long tube 105 connect from beginning to end with two the first transverse tubes 106
Body water pipe 110；
The horizontal drench with rain row 10 one end be provided with water inlet pipe mouth 101, the water inlet pipe mouth 101 is provided with the first water valve
103, a plurality of the second transverse tube connected with first long tube 104 is provided between the long tube 105 of the first long tube 104 and second
107, multiple adjustable shower nozzles 102 in the direction connected with second transverse tube 107 are provided with every second transverse tube 107,
The shower nozzle 102 sprays direction towards the table top of testing stand 30.
Specifically, the main body water pipe 110 and second transverse tube 107 can be metal, the multiple metal of modeling and/or plastics material
The water pipe of material；Optionally, the main body water pipe 110 is galvanized iron conduit；Optionally, second transverse tube 107 is galvanized iron conduit.
Specifically, the size of the main body water pipe 110 can be set according to actual conditions；Optionally, the main body water pipe
110 the first long tube 104 and the length of the second long tube 105 are 400cm, two the first transverse tubes 106 of the main body water pipe 110
Length with the second transverse tube 107 is 200cm；Optionally, the main body water pipe 110 is a diameter of 10cm hollow rectangle water
Pipe.
Specifically, the spacing between the number of second transverse tube 107 and adjacent second transverse tube 107 can be according to actual feelings
Condition is set；Optionally, be provided between the long tube 105 of the first long tube 104 and second 13 articles connected with the first long tube 104
Two transverse tubes 107；Optionally, the spacing between adjacent second transverse tube 107 is equal；Optionally, between adjacent second transverse tube 107
Away from for 30cm.
Specifically, set the spacing between the number of shower nozzle 102 and adjacent shower nozzle 102 can be with second transverse tube 107
Set according to actual conditions；Optionally, the adjustable shower nozzle 102 in 3 directions is set on each second transverse tube 107；Optionally,
Spacing between adjacent shower nozzle 102 is equal；Optionally, the spacing between adjacent shower nozzle 102 is 30cm.
In an optional embodiment, spaced set has 13 between the long tube 105 of the first long tube 104 and second
The second transverse tube 107 connected with the first long tube 104, the shower nozzle 102 of spaced set 3 on second transverse tube 107.
Specifically, the sprinkling direction of the adjustable shower nozzle 102 in direction can be set according to being actually needed, such as the spray
The first 102 spray angle row that can be drenched with rain with the horizontal 10 is in 0 degree~an angle of 90 degrees degree；Optionally, the shower nozzle 102 sprays angle
It 10 be in an angle of 90 degrees degree that degree, which is arranged to the horizontal row that drenches with rain, i.e., the described sprinkling of shower nozzle 102 direction is arranged to and the level
The formula row that drenches with rain is 10 vertical.
The technical scheme of above-described embodiment, the multiple water tank 210 convey the water of limited amount by water yield control system 220
Flow into horizontal to drench with rain in the main body water pipe 110 for arranging 10, then flowed into by main body water pipe 110 in multiple second transverse tubes 107, first
The control of water valve 103 flows into the water speed and hydraulic pressure of each second transverse tube 107, and then controls multiple sprays on each second transverse tube 107
First 102 water speed and hydraulic pressure, while the adjustable shower nozzle 102 in direction enables to whole horizontal to drench by the direction water spray set
Rain row 10 equably sprays water droplet, so as to the situation that in test analog insulation is uniformly drenched with rain.
With reference to figure 4, Fig. 4 is the stereogram of adjustable water supply installation 20 of one embodiment, in an optional embodiment, institute
Stating adjustable water supply installation 20 includes：Multiple water tanks 210 and water yield control system 220, each delivery port of water tank 210 pass through
The drench with rain water inlet pipe mouth 101 of row 10 of the water yield control system 220 and the horizontal connects, each water outlet of water tank 210
Mouth is provided with the second water valve 211.
Specifically, the number of the water tank 210 can be configured according to being actually needed；Optionally, the adjustable water supply
Device 20 includes two water tanks 210.
Specifically, the model of the water tank 210 can be set according to being actually needed；Optionally, the water tank 210 is 5 tons
The mixed water tank of capacity.
The technical scheme of above-described embodiment, by setting multiple water tanks 210 and being arranged at each delivery port of water tank 210
Second water valve 211, the water that can be exported by switching each regulating tank 210 of second water valve 211, realizes adjustable water supply installation
The control of 20 output waters.
In an optional embodiment, the top of water tank 210 is provided with opening 212, and the opening 212 is used to add
Test reagent and/or the device for placing liquid electric conductivity in measurement water tank 210.
The technical scheme of above-described embodiment, by setting the top end opening 212 of water tank 210, it can easily pass through water tank 210
Opening 212 adds the water quality of water in test reagent regulating tanks 210, is drenched with rain the water quality of the water spray of row 10, passed through with adjusting horizontal
Regulating water quality realizes the salt fog test for the situation of drenching with rain for simulating the different for example dirty rainwater of rain event；By being used from opening 212
The electrical conductivity of water in electrical conductivity device to test water tank 210, in that context it may be convenient to the conductivity data of the water for salt fog test is learnt,
The electrical conductivity for the water that salt fog test uses can be adjusted.
With reference to figure 5, Fig. 5 is the structural representation of adjustable water supply installation 20 of one embodiment, in an optional embodiment
In, the water yield control system 220 includes：Filter 221, water pump 222, check valve 223, motor-driven valve 224 and differential pressure balancing valve
225, the filter 221, water pump 222 and check valve 223 are sequentially communicated, and the water inlet of filter 221 goes out with check valve 223
Motor-driven valve 224 is communicated between the mouth of a river, differential pressure balancing valve 225 is communicated between the water inlet of motor-driven valve 224 and delivery port；
Wherein, the water inlet of filter 221 connects with the delivery port of each water tank 210, and the check valve 223 goes out
The drench with rain water inlet pipe mouth 101 of row 10 of the mouth of a river and the horizontal connects.
The technical scheme of above-described embodiment, the water yield control system 220 by the check valve 223, motor-driven valve 224 with
And differential pressure balancing valve 225 controls water speed and hydraulic pressure of the water supply installation by the output current of water yield control system 220 so that Duo Geshui
Case 210 conveys current by water yield control system 220 by the water speed and hydraulic pressure of setting, the hydraulic pressure of stable water delivery, avoids due to water
The hydraulic pressure that water change in case 210 is brought changes and the hydraulic pressure of row's water outlet of 10 shower nozzle 102 is unstable so that horizontal is drenched with rain, and protects
The hydraulic pressure and water speed that card horizontal drenches with rain row 10 to stablize uniformly are sprayed water, and reach the effect that simulation is uniformly drenched with rain.
In an optional embodiment, the delivery port of check valve 223 is provided with pressure sensor 226, the filtering
First pressure table 227 is provided between device 221 and water pump 222, second pressure gauge is provided between water pump 222 and check valve 223
228, the one end of pressure sensor 226 is provided with the 3rd pressure gauge 229 between check valve 223 and pressure sensor 226.
The technical scheme of above-described embodiment, by set in 220 each position of water yield control system multiple pressure gauges and
Water outlet sets pressure sensor 226, can easily obtain the current hydraulic pressure at links in water yield control system 220
Value, the water pressure conditions for flowing through water yield control system 220, convenient regulating pondage control system can be monitored by the hydraulic pressure value of acquisition
The hydraulic pressure of the output current of system 220, ensure the stability of the current hydraulic pressure of outflow water yield control system 220.
In an optional embodiment, the adjustable water supply installation 20 also includes base 230, the multiple water tank 210
And water yield control system 220 is fixedly installed on the base 230, the bottom surface of base 230 is provided with multiple pulleys 231.
The technical scheme of above-described embodiment, adjustable water supply installation 20 and multiple water tanks 210 are fixed on a base 230,
The bottom surface of base 230 is provided with multiple pulleys 231, with convenient and strength-saving can slide transport adjustable supply water by pulley 231 and fill
Put 20.
Specifically, the shape of the base 230 can be square, rectangle, ellipse, circle or other shapes；Tool
Body, the number of the support leg 232 can be set according to being actually needed；Optionally, the base 230 is rectangle, institute
State and be each provided with a pulley 231 at the bottom surface corner of base 230.
In an optional embodiment, the base 230 be provided with it is multiple can uprightly or the support leg 232 packed up,
When the support leg 232 is in collapsed state, the pulley 231 can drive base 230 to slide, when the support leg
232 when being in erectility, and the pulley 231 can not drive base 230 to slide.
Specifically, the shape of the base 230 can be square, rectangle, ellipse, circle or other shapes；Tool
Body, the number of the support leg 232 can be set according to being actually needed；Optionally, the base 230 is rectangle, institute
The every side for stating the bottom surface long side both sides of base 230 is symmetrically arranged with two support legs 232.
The technical scheme of above-described embodiment, by base 230 set it is multiple can uprightly or the support leg 232 packed up,
When the support leg 232 is in collapsed state, the pulley 231 can drive base 230 to slide, when the support leg
232 when being in erectility, and the pulley 231 can not drive base 230 to slide, and can need to slide the adjustable dress that supplies water of transport
It is to pack up support leg 232 to put 20, it is not necessary to which sliding will support leg 232 upright when transporting adjustable water supply installation 20, avoid
Because external force effect causes adjustable water supply installation 20 to slide or overturn.
With reference to figure 6, Fig. 6 is the stereogram of testing stand 30 of one embodiment, in an optional embodiment, the experiment
Platform 30 includes horizonal base plate 310 and is arranged at multiple universal wheels 311 of the bottom surface of horizonal base plate 310, the upper table of horizonal base plate 310
A sample disc 312 is fixedly installed among face, the sample disc 312 is used to place insulator to be measured.
Specifically, the number of the universal wheel 311 can be set according to being actually needed；Specifically, the horizonal base plate 310
Shape can be square, rectangle, ellipse, circle or other shapes；Optionally, the horizonal base plate 310 is pros
Shape, a universal wheel 311 is each provided with the bottom surface corner of horizonal base plate 310.
Specifically, the shape of the sample disc 312 can be square, rectangle, ellipse, circle or other shapes；
Optionally, the sample disc 312 is circular sample disk 312.
The technical scheme of above-described embodiment, because the bottom surface of testing stand 30 is provided with multiple universal wheels 311, it can facilitate
Effortlessly nigration platform 30, the position of the convenient adjustment test bed 30 when drench with rain test；The upper table of horizonal base plate 310
A sample disc 312 is fixedly installed among face, the sample disc 312 can easily place insulator to be measured.
The technical scheme of each embodiment of summary, the multiple water tank 210 are set by the output of water yield control system 220
The water-carrying capacity for the stable hydraulic pressure put, horizontal is flowed into by the water of pipeline limited amount and drenched with rain in the main body water pipe 110 for arranging 10,
Flowed into again by main body water pipe 110 in multiple second transverse tubes 107, the control of the first water valve 103 flows into the water of each second transverse tube 107
Speed and hydraulic pressure, and then the water speed and hydraulic pressure of multiple shower nozzles 102 on each second transverse tube 107 are controlled, while the adjustable spray in direction
First 102, by the direction water spray set, enable to water and angle of the whole horizontal with drenching with rain 10 stable and uniforms of row by setting
Spray water droplet；By being provided with pulley 231 in the adjustable bottom of water supply installation 20 and supporting the bottom plate of leg 232, Neng Goufang
Just avoid adjustable water supply installation 20 to slide rollover while being moved to adjustable water supply installation 20；It is open by water tank 210
212 add the water quality of water in test reagent regulating tank 210, realize the situation of drenching with rain for simulating the different for example dirty rainwater of rain event
Salt fog test；By the electrical conductivity from opening 212 using water in electrical conductivity device to test water tank 210, examination of drenching with rain can be adjusted
Test the electrical conductivity of the water used, so as in test stably the analog insulation difference amount of drenching with rain, difference drench with rain angle and
The situation that difference is uniformly drenched with rain under the conditions of staining.
With reference to figure 7, Fig. 7 is the salt fog test method flow diagram of insulator rain test device, a kind of as above any one institute
The salt fog test method for the insulator rain test device stated, comprises the following steps：
S101, in on-test, insulator to be measured is placed on testing stand 30, opens the second water valve 211, adjust institute
State water yield control system 220 so that the horizontal drench with rain row 10 shower nozzles 102 sprinkling region be completely covered on the testing stand 30
Insulator；
Above-mentioned steps, insulator to be measured is placed on testing stand 30, the horizontal, which is drenched with rain, arranges 10 shower nozzles 102 towards institute
Testing stand 30 is stated, the second water valve 211 is opened and current is exported from multiple water tanks 210, pass through regulating pondage control system 220
Regulation and control be conveyed to horizontal drench with rain row 10 water so that the horizontal drench with rain row 10 shower nozzles 102 sprinkling region be completely covered
Insulator on the testing stand 30, so as to followed by salt fog test.
S102, adjusts the water supply quality of multiple water tanks 210, and what setting insulator was drenched with rain stains condition；
Above-mentioned steps, by the water supply quality for adjusting multiple water tanks 210 so that water tank 210 is set according to the output of experiment demand
Surely the water of condition is stained so that the horizontal row 10 that drenches with rain spills the water for staining condition of setting and stains the leaching of the situation of drenching with rain to simulate
Rain is tested.
S103, adjust the horizontal and drench with rain the first water valve 103 of row 10, the amount of drenching with rain of insulator is set；
Above-mentioned steps, the first water valve 103 drenched with rain by adjusting the horizontal, set according to the needs of salt fog test exhausted
The amount of drenching with rain of edge.
S104, the sprinkling direction of each shower nozzle 102 is adjusted, the angle of drenching with rain of insulator is set；
Above-mentioned steps, by adjusting the sprinkling direction of the adjustable shower nozzle 102 in each direction, according to the need of salt fog test
The angle of drenching with rain of insulator is set.
S105, it is described stain condition, the amount of drenching with rain and angle of drenching with rain under to insulator carry out salt fog test.
Above-mentioned steps, abovementioned steps setting stain condition, the amount of drenching with rain and angle of drenching with rain under insulator is drenched with rain
Experiment, measure the salt fog test data of needs.
Above-mentioned insulator salt fog test method, insulator to be measured is placed on testing stand 30, opens the second water valve 211,
The water inflow horizontal that the multiple water tank 210 conveys limited amount by water yield control system 220 is drenched with rain in row 10, passes through first
Water valve 103 controls the water speed and hydraulic pressure of each row's shower nozzle 102, while the adjustable shower nozzle 102 in direction is sprayed water by the direction set, can
So that whole horizontal is drenched with rain, row 10 is equably sprayed on insulator to be measured of the water droplet to the testing stand 30, to insulation
Son carries out salt fog test, so as to the situation that in test analog insulation is uniformly drenched with rain.By the confession for adjusting multiple water tanks 210
Water water quality, set what insulator drenched with rain to stain condition, the setting amounts of drenching with rain of row 10 and drenched with rain angle by adjusting the horizontal and drenching with rain
Degree, it is described stain condition, the amount of drenching with rain and angle of drenching with rain under to insulator carry out salt fog test, can simulate what is uniformly drenched with rain
Situation so that the test data measured is more accurate.
In an optional embodiment, the water supply quality of the multiple water tanks 210 of regulation, the dye for setting insulator to drench with rain
The step of dirty condition, includes：
The opening 212 set by the top of water tank 210 in the multiple water tank 210 adds test reagent, sets the water
The salt of the reclaimed water of case 210 is close and ash is close.
Specifically, the salt is close and ash is close to be configured according to the experiment demand of reality, such as can set multigroup
Different salt is close and ash is close respectively to insulator progress salt fog test to be measured.
In an optional embodiment, the amount of drenching with rain is 2mm/min, and the angle of drenching with rain is 90 degree；
In an optional embodiment, the condition of staining be supply water salt it is close be 0.25mg/cm2, ash is close to be
1.5mg/cm2。
In an optional embodiment, the salt fog test is that bushing shell for transformer dry arcing distance chooses experiment.
Optionally, the bushing shell for transformer dry arcing distance is chosen experiment and comprised the following steps：
S201, setting stain condition, the amount of drenching with rain and angle of drenching with rain under, to 500kV bushings shell for transformer carry out short circuit examination
Test.
During this, drenched with rain condition by the simulation of insulator rain test device, to 500kV under the conditions of the drenching with rain of setting
Bushing shell for transformer test product carries out maximum withstanding voltage experiment.
In one embodiment, the polluting manners of the setting include：It is 0.25mg/cm that it is close, which to test salt,2, ash is close to be
1.5mg/cm2；The amount of drenching with rain of the setting includes：The amount of drenching with rain is 2mm/min；The angle of drenching with rain of the setting includes：Drench with rain
Angle is 90 degree, wherein, described 90 degree are 90 degree downward with horizontal plane of angle of drenching with rain.
The combination of experimental condition in above-described embodiment, more excellent result of the test can be obtained, so as to more science
Objectively determine that the withstanding voltage drenched with rain under state is influenceed by sleeve pipe dry arcing distance.
In one embodiment, in the short circuit experiment, short circuit is carried out from the earth terminal of 500kV bushings shell for transformer.
In above-described embodiment, short circuit is carried out from earth terminal, the rainwater that sleeve pipe top can be avoided to pour drips to casing part
Influence experiment.
Result of the test is as shown in table 1；Nonlinear fitting is carried out to the result of table 1, as a result as shown in figure 8, Fig. 8 is different dry arc
The fit correlation schematic diagram of withstanding voltage under.
The short circuit result of the test of table 1
S202, tested to obtain withstanding voltage and the relation of dry arcing distance according to the short circuit, and obtain withstanding voltage with doing
Arc distance from relational expression.
During this, by drawing the relation of withstanding voltage and dry arcing distance to bushing shell for transformer progress short circuit experiment and obtaining
Go out relational expression.
In one embodiment, it is described obtain withstanding voltage and dry arcing distance relational expression the step of can include：According to
The short circuit tests to obtain withstanding voltage and the data of dry arcing distance carry out nonlinear fitting, obtains withstanding voltage and dry arcing distance
Relational expression.
As embodiment, the relational expression of the withstanding voltage and dry arcing distance can be：
UW=-10-5Lg 2+0.118Lg-1.2661 (1)
In formula, UWRepresent withstanding voltage, LgRepresent dry arcing distance.
S203, maximum withstanding voltage experiment is carried out to 500kV bushings shell for transformer test product, obtains the 500kV transformers set
The maximum withstanding voltage of pipe.
In this step, in order to draw the critical dry arcing distance of test product, maximum withstanding voltage experiment, bar of drenching with rain are carried out to test product
Part is identical with above-mentioned experiment, and result of the test is as shown in table 2.
The maximum withstanding voltage result of the test of table 2
Withstanding voltage state is flashover or tolerance status, and as shown in Table 2, test product maximum withstanding voltage is 295kV.
S204, setting sea is calculated using the withstanding voltage and the relational expression of dry arcing distance, and according to the withstanding voltage
Rise sheer from level ground the dry arcing distance recommendations of area's 500kV bushings shell for transformer.
The dry arcing distance recommendation of the bushing shell for transformer of withstanding voltage can be calculated according to formula (1).Further, it is right
The dry arcing distance recommendation carries out elevation correction, obtains plains region dry arcing distance recommendation.
For example, according to formula (1) can be calculated tolerance 318kV bushing shell for transformer dry arcing distance be 4600mm, test
The Altitude Regions in place are more than 1000m, and this dry arcing distance is applied to height above sea level>1000m areas, elevation correction is carried out to result, can
It is 4300mm to obtain plains region dry arcing distance recommendation.
Above-mentioned bushing shell for transformer dry arcing distance chooses experiment, and short circuit experiment is carried out to 500kV bushings shell for transformer and draws tolerance
The relation of voltage and dry arcing distance simultaneously draws relational expression, then maximum withstanding voltage experiment is carried out to test product and draws its maximum tolerance electricity
Pressure experiment, setting Altitude Regions are calculated by the relational expression of withstanding voltage and dry arcing distance, 500kV bushings shell for transformer are done
Arc distance is from recommendation；The dry arcing distance of bushing shell for transformer can be selected exactly, meet grade of rated voltage under the state of drenching with rain
External insulation requirement, effectively can prevent rain from dodging, the design for 500kV bushings shell for transformer provides reference.
Expression or logic and/or step described otherwise above herein in flow charts, for example, being considered use
In the order list for the executable instruction for realizing logic function, may be embodied in any computer-readable medium, for
Instruction executing device, device or equipment (such as computer based device including the device of processor or other can be held from instruction
Luggage is put, the device of device or equipment instruction fetch and execute instruction) use, or combine these instruction executing devices, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction executing device, device or equipment or the dress used with reference to these instruction executing devices, device or equipment
Put.
The more specifically example (non-exhaustive list) of computer-readable medium includes following：Connected up with one or more
Electrical connection section (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, computer-readable medium, which can even is that, to print the paper of described program thereon or other are suitable
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, software that multiple steps or method can be performed in memory and by suitable instruction executing device with storage
Or firmware is realized.If, and in another embodiment, can be with well known in the art for example, realized with hardware
Any one of row technology or their combination are realized：With the logic gates for realizing logic function to data-signal
Discrete logic, have suitable combinational logic gate circuit application specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. insulator rain test device, it is characterised in that including：Horizontal is drenched with rain row, adjustable water supply installation and experiment Platform, wherein, the adjustable water supply installation delivery port and the horizontal water inlet pipe mouth set on row of drenching with rain connects, and the horizontal is drenched Rain row is arranged above the testing stand；Wherein, the horizontal, which drenches with rain to arrange, is provided with the adjustable shower nozzle in direction that multiple rows of one end connects with water route, the horizontal The water inlet pipe mouth of row of drenching with rain is provided with the first water valve；The testing stand is used to place insulator to be measured, and when carrying out salt fog test, the horizontal, which is drenched with rain, arranges to the examination The insulator tested on platform is sprayed water, and simulates condition of drenching with rain.
- 2. insulator rain test device according to claim 1, it is characterised in that the horizontal row that drenches with rain includes： First long tube, the second long tube and two the first transverse tubes connect the main body water pipe formed from beginning to end；The horizontal drench with rain row one end be provided with water inlet pipe mouth, the water inlet pipe mouth is provided with the first water valve, first long tube And second be provided with a plurality of the second transverse tube connected with first long tube between long tube, it is provided with every second transverse tube Multiple adjustable shower nozzles in direction connected with second transverse tube, the shower nozzle spray direction towards the testing stand table top；And/orSpaced set has 13 the second transverse tubes connected with the first long tube between first long tube and the second long water pipe, described 3 shower nozzles of spaced set on second transverse tube；And/orThe main body water pipe is galvanized iron conduit.
- 3. insulator rain test device according to claim 1, it is characterised in that the adjustable water supply installation includes： Multiple water tanks and water yield control system, each water outlet of water tank are drenched by the water yield control system and the horizontal The water inlet pipe mouth connection of rain row, each water outlet of water tank are provided with the second water valve；And/orThe water tank top is provided with opening, described to be open for adding test reagent and/or placing liquid electric in measurement water tank The device of conductance；And/orThe adjustable water supply installation includes two water tanks, and the water tank is the mixed water tank of 5 tons of capacity.
- 4. insulator rain test device according to claim 3, it is characterised in that the water yield control system includes： Filter, water pump, check valve, motor-driven valve and differential pressure balancing valve, the filter, water pump and check valve are sequentially communicated, the mistake Motor-driven valve is communicated between filter water inlet and check valve delivery port, pressure is communicated between the motor-driven valve water inlet and delivery port Poor balanced valve；Wherein, the filter water inlet connects with the delivery port of each water tank, the check valve delivery port and the water Flat drench with rain row water inlet pipe mouth connection；And/orThe check valve delivery port is provided with pressure sensor, and first pressure table, water are provided between the filter and water pump Second pressure gauge is provided between pump and check valve, is provided between check valve and pressure sensor close to pressure sensor one end 3rd pressure gauge.
- 5. insulator rain test device according to claim 3, it is characterised in that the adjustable water supply installation also includes Base, the multiple water tank and water yield control system are fixedly installed on the base, and the base end face is provided with multiple Pulley, the base be provided with it is multiple can uprightly or the support leg packed up, when the support leg is in collapsed state, institute Stating pulley can drive base to slide, and when the support leg is in erectility, the pulley can not drive base to slide.
- 6. insulator rain test device according to claim 1, it is characterised in that the testing stand includes horizonal base plate With the multiple universal wheels for being arranged at horizonal base plate bottom surface, a sample disc, institute are fixedly installed among the horizonal base plate upper surface Sample disc is stated to be used to place insulator to be measured.
- 7. a kind of salt fog test method of insulator rain test device as described in any one of claim 1 to 6, its feature exist In comprising the following steps：In on-test, insulator to be measured is placed on testing stand, the second water valve is opened, adjusts the water rate control system System so that the horizontal, which is drenched with rain, arranges the insulator that shower nozzle sprinkling region is completely covered on the testing stand；The water supply quality of multiple water tanks is adjusted, what setting insulator was drenched with rain stains condition；Adjust the horizontal to drench with rain the first water valve of row, the amount of drenching with rain of insulator is set；The sprinkling direction of each shower nozzle is adjusted, the angle of drenching with rain of insulator is set；It is described stain condition, the amount of drenching with rain and angle of drenching with rain under to insulator carry out salt fog test.
- 8. the test method of insulator rain test device according to claim 7, it is characterised in that the regulation is multiple The water supply quality of water tank, what setting insulator was drenched with rain includes the step of staining condition：By the multiple Water in Water Tanks case top set opening add test reagent, set the Water in Water Tanks salt it is close and Ash is close.
- 9. the test method of insulator rain test device according to claim 7, it is characterised in that the amount of drenching with rain is 2mm/min, the angle of drenching with rain is 90 degree；And/orThe condition of staining be supply water salt it is close be 0.25mg/cm2, close ash is 1.5mg/cm2。
- 10. the test method of insulator rain test device according to claim 7, it is characterised in that the examination of drenching with rain Test to choose for bushing shell for transformer dry arcing distance and test；The bushing shell for transformer dry arcing distance is chosen experiment and comprised the following steps：Setting stain condition, the amount of drenching with rain and angle of drenching with rain under, to 500kV bushings shell for transformer carry out short circuit experiment；Tested to obtain withstanding voltage and the relation of dry arcing distance according to the short circuit, and obtain the pass of withstanding voltage and dry arcing distance It is formula；Maximum withstanding voltage experiment is carried out to 500kV bushings shell for transformer test product, obtains the maximum resistance to of the 500kV bushings shell for transformer By voltage；Setting Altitude Regions are calculated using the withstanding voltage and the relational expression of dry arcing distance, and according to the withstanding voltage The dry arcing distance recommendation of 500kV bushings shell for transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710841708.3A CN107589353A (en) | 2017-09-18 | 2017-09-18 | Insulator rain test device and salt fog test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710841708.3A CN107589353A (en) | 2017-09-18 | 2017-09-18 | Insulator rain test device and salt fog test method |
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| CN107589353A true CN107589353A (en) | 2018-01-16 |
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| CN201710841708.3A Pending CN107589353A (en) | 2017-09-18 | 2017-09-18 | Insulator rain test device and salt fog test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553796A (en) * | 2019-09-21 | 2019-12-10 | 苏州华亚智能科技股份有限公司 | box type rain test equipment |
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Application publication date: 20180116 |