CN112363032A - Device and method for testing relation between internal characteristic gas and pressure of oil-less power equipment - Google Patents
Device and method for testing relation between internal characteristic gas and pressure of oil-less power equipment Download PDFInfo
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- CN112363032A CN112363032A CN202011257535.9A CN202011257535A CN112363032A CN 112363032 A CN112363032 A CN 112363032A CN 202011257535 A CN202011257535 A CN 202011257535A CN 112363032 A CN112363032 A CN 112363032A
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- 238000012360 testing method Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 110
- 239000007924 injection Substances 0.000 claims abstract description 110
- 238000000605 extraction Methods 0.000 claims abstract description 37
- 239000007789 gas Substances 0.000 claims description 156
- 238000007789 sealing Methods 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0011—Sample conditioning
- G01N33/0016—Sample conditioning by regulating a physical variable, e.g. pressure, temperature
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
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- 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
- G01R31/16—Construction of testing vessels; Electrodes therefor
Abstract
The invention relates to a device and a method for testing the relation between internal characteristic gas and pressure of oil-less power equipment, and belongs to the technical field of transformer tests. The technical scheme is as follows: the top of the oil tank (1) is provided with a main body gas injection valve (9), a main body gas extraction valve (19) and a main body pressure release valve (10), a characteristic gas bottle (25) is connected with the main body gas injection valve (9) through a gas flowmeter control system (24), the bottom of the side wall of the oil tank (1) is provided with a main body oil injection valve (14), and the main body oil injection valve (14) is connected with an oil injection system (26); the top of the conservator (2) is provided with an conservator air injection valve (4), an conservator air extraction valve (5), a high-precision pressure gauge and an conservator injection hole, and a vacuum pump system is connected with the conservator air extraction valve. The invention realizes the simulation of the internal environment of typical oil-less power equipment by simulating the gas and pressure conditions of oil-less equipment with different voltage grades and different heights, and obtains a test result.
Description
Technical Field
The invention relates to a device and a method for testing the relation between internal characteristic gas and pressure of oil-less power equipment, and belongs to the technical field of transformer tests.
Background
At present, a large amount of characteristic gas is generated when few-oil power equipment such as a sleeve, a mutual inductor and the like operated by a power grid fails, and oil injection and even explosion of the few-oil power equipment such as the sleeve, the mutual inductor and the like can be caused in severe cases. The gas content and the generation rate of the gas with different characteristics have different influences on the internal pressure of the oil-less equipment. Therefore, it is necessary to design a set of special test apparatus and method to develop the research on the relationship between the characteristic gas and the pressure inside the oil-less power equipment.
Disclosure of Invention
The invention aims to provide a device and a method for testing the relation between characteristic gas and pressure in less-oil power equipment, which can test the relation between different characteristic gas and pressure in less-oil power equipment, are easy to operate, high in accuracy, high in adjustability, low in cost and easy to popularize and apply, and solve the problems in the background art.
The technical scheme of the invention is as follows:
a device for testing the relation between characteristic gas and pressure in less-oil power equipment comprises an oil tank, an oil conservator gas injection valve, an oil conservator gas extraction valve, a high-precision pressure gauge, a connecting pipe system, a main body gas injection valve, a main body pressure release valve, a main body oil extraction valve, a main body oil injection valve, a main body oil drain valve, an oil conservator injection hole, a main body gas extraction valve, an oil tank flange, a vacuum pump system, a gas flowmeter control system, a characteristic gas bottle and an oil injection system; the bottom of the oil conservator is connected with one end of a connecting pipe system, and the other end of the connecting pipe system is connected with the top of an oil tank through an oil tank flange; the top of the oil tank is provided with a main body gas injection valve, a main body gas extraction valve and a main body pressure release valve, the characteristic gas bottle is connected with the main body gas injection valve through a gas flowmeter control system, the side wall of the oil tank is provided with a main body oil extraction valve, the bottom of the side wall of the oil tank is provided with a main body oil injection valve, and the main body oil injection valve is connected with an oil injection system; the top of the conservator is provided with an conservator air injection valve, an conservator air exhaust valve, a high-precision pressure gauge and an conservator injection hole, and the vacuum pump system is connected with the conservator air exhaust valve.
The oil tank is provided with a thermometer seat, and the thermometer seat is provided with a thermometer.
And an oil level gauge is arranged on the oil conservator.
And a stop valve is arranged on the connecting pipe system.
And a main body lifting hook is arranged on the side wall of the oil tank.
And the bottom of the oil tank is provided with main body supporting legs.
The oil tank comprises an oil tank body and an oil tank cover, a main body sealing rubber strip is arranged between the oil tank body and the oil tank cover in a matching mode, and the oil tank cover, the main body sealing rubber strip and the oil tank body are fixed through main body fixing bolts; the oil conservator comprises an oil conservator box body and an oil conservator box cover, an oil conservator sealing rubber strip is arranged between the oil conservator box body and the oil conservator box cover in a matched mode, and the oil conservator box cover, the oil conservator sealing rubber strip and the oil conservator box body are fixed through an oil conservator fixing bolt.
The main body gas injection valve, the main body gas extraction valve and the main body pressure release valve are arranged on the oil tank cover; the oil conservator air injection valve, the oil conservator air extraction valve, the high-precision pressure gauge and the oil conservator injection hole are arranged on the oil conservator box cover.
Two oil conservator hanging rings are arranged on the oil conservator cover.
A test method for the relation between the characteristic gas and the pressure inside the oil-less power equipment adopts the test device and comprises the following specific steps:
s1, setting the height of the connecting pipe system, selecting the connecting pipe system, hoisting the conservator, and connecting the conservator, the connecting pipe system and the oil tank;
s2, closing the main gas injection valve and the conservator gas injection valve, connecting the vacuum pump system with the conservator gas extraction valve, vacuumizing, and simultaneously opening the high-precision pressure gauge to observe the internal pressure;
s3, connecting the main body oil injection valve with an oil injection system for oil injection, and observing the oil level condition of an oil level indicator on the oil conservator;
s4, closing the main oil injection valve, standing and observing a high-precision pressure gauge to detect the internal pressure;
and S5, connecting the characteristic gas bottle to a gas flowmeter control system, connecting the gas flowmeter control system with a main body gas injection valve, opening the valve of the characteristic gas bottle, adjusting the gas flow rate through the gas flowmeter control system, opening the main body gas injection valve to start gas injection, observing and recording the numerical value of the high-precision pressure gauge, and finishing measurement.
A gas solubility test method for different characteristic gases in a less-oil power device is used for carrying out gas solubility tests for different characteristic gases under different pressures and different temperatures in the less-oil power device, and the test device is adopted and comprises the following specific steps:
s1, setting the height of the connecting pipe system, selecting the connecting pipe system, hoisting the conservator, and connecting the conservator, the connecting pipe system and the oil tank;
s2, closing the main gas injection valve and the conservator gas injection valve, connecting the vacuum pump system with the conservator gas extraction valve, vacuumizing, simultaneously opening the high-precision pressure gauge to observe the internal pressure, and pumping the pressure to the required measurement pressure value;
s3, connecting the main body oil injection valve with an oil injection system for oil injection, and observing the oil level condition of an oil level indicator on the oil conservator;
s4, closing the main oil injection valve, standing and observing a high-precision pressure gauge to detect the internal pressure;
s5, connecting the characteristic gas bottle to a gas flowmeter control system, connecting the gas flowmeter control system with a main body gas injection valve, opening the valve of the characteristic gas bottle, adjusting the gas flow rate through the gas flowmeter control system, opening the main body gas injection valve to start gas injection, and observing and recording the values of a thermometer and a high-precision pressure gauge in a thermometer seat;
and S6, sampling oil through the main oil sampling valve at the planned time node, and testing the gas content in the oil to obtain the gas solubility of the characteristic gas under the pressure.
The invention has the following positive effects: 1. the gas and pressure conditions of the oil-less equipment with different voltage grades and different heights can be simulated by only replacing the combination mode of different connecting pipe systems, and a plurality of inconveniences caused by repeated design of different devices are avoided. 2. And a vacuumizing oil injection method is adopted, so that the simulation of the internal environment of typical oil-less power equipment is realized. 3. The invention has been applied, the research of the influence of gases with different characteristics on the internal pressure of the oil-less equipment is developed in a laboratory, the test result can reflect the more real engineering condition, and the invention has certain engineering practical significance. 4. The oil conservator and the oil tank can be separated, and the oil tank can independently form a test device. 5. The invention can also be used for gas solubility research of different characteristics under different pressures and different temperatures.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a top view of the fuel tank of the present invention;
FIG. 4 is a schematic view of the structure of the conservator of the present invention;
FIG. 5 is a side view of the conservator of the present invention;
FIG. 6 is a top view of the conservator of the present invention;
FIG. 7 is a schematic view of the present invention in use;
in the figure: the device comprises an oil tank 1, an oil conservator 2, an oil conservator hanging ring 3, an oil conservator gas injection valve 4, an oil conservator air extraction valve 5, a high-precision pressure gauge 6, a stop valve 7, a connecting pipe system 8, a main body gas injection valve 9, a main body pressure release valve 10, a main body fixing bolt 11, a main body lifting hook 12, a main body oil extraction valve 13, a main body oil injection valve 14, a main body oil drain valve 15, a main body supporting leg 16, an oil conservator injection hole 17, an oil level gauge 18, a main body air extraction valve 19, a main body sealing rubber strip 20, an oil conservator sealing rubber strip 21, an oil tank flange 22, a vacuum pump system 23, a gas flowmeter control system 24, a characteristic gas bottle.
Detailed Description
The invention is further described with reference to the following figures and examples:
a device for testing the relation between characteristic gas and pressure in less-oil power equipment comprises an oil tank 1, an oil conservator 2, an oil conservator gas injection valve 4, an oil conservator gas extraction valve 5, a high-precision pressure gauge 6, a connecting pipe system 8, a main body gas injection valve 9, a main body pressure release valve 10, a main body gas extraction valve 13, a main body oil injection valve 14, a main body oil drain valve 15, an oil conservator injection hole 17, a main body gas extraction valve 19, an oil tank flange 22, a vacuum pump system 23, a gas flowmeter control system 24, a characteristic gas bottle 25 and an oil injection system 26; the bottom of the oil conservator 2 is connected with one end of a connecting pipe system 8, and the other end of the connecting pipe system 8 is connected with the top of the oil tank 1 through an oil tank flange 22; the top of the oil tank 1 is provided with a main body gas injection valve 9, a main body gas extraction valve 19 and a main body pressure release valve 10, a characteristic gas bottle 25 is connected with the main body gas injection valve 9 through a gas flowmeter control system 24, the side wall of the oil tank 1 is provided with a main body oil extraction valve 13, the bottom of the side wall of the oil tank 1 is provided with a main body oil injection valve 14, and the main body oil injection valve 14 is connected with an oil injection system 26; the top of the conservator 2 is provided with an conservator air injection valve 4, an conservator air extraction valve 5, a high-precision pressure gauge 6 and an conservator injection hole 17, and a vacuum pump system 23 is connected with the conservator air extraction valve 5.
The oil tank 1 is provided with a thermometer seat 27, and the thermometer seat 27 is provided with a thermometer.
An oil level gauge 18 is arranged on the oil conservator 2.
And a stop valve 7 is arranged on the connecting pipe system 8.
And a main body lifting hook 12 is arranged on the side wall of the oil tank 1.
The bottom of the oil tank 1 is provided with main body supporting legs 16.
The oil tank 1 comprises an oil tank body and an oil tank cover, a main body sealing rubber strip 20 is arranged between the oil tank body and the oil tank cover in a matching mode, and the oil tank cover, the main body sealing rubber strip 20 and the oil tank body are fixed through a main body fixing bolt 11; the conservator 2 comprises an conservator box body and an conservator box cover, an conservator sealing rubber strip 21 is arranged between the conservator box body and the conservator box cover in a matched mode, and the conservator box cover, the conservator sealing rubber strip 21 and the conservator box body are fixed through conservator fixing bolts.
The main body gas injection valve 9, the main body gas extraction valve 19 and the main body pressure release valve 10 are arranged on the oil tank cover; the conservator air injection valve 4, the conservator air extraction valve 5, the high-precision pressure gauge 6 and the conservator injection hole 17 are arranged on the conservator cover.
Two oil conservator hanging rings 3 are arranged on the oil conservator cover.
A test method for the relation between the characteristic gas and the pressure inside the oil-less power equipment adopts the test device and comprises the following specific steps:
s1, setting the height of the connecting pipe system, hoisting the conservator after selection, and connecting the conservator 2, the connecting pipe system 8 and the oil tank 1 (the maximum height is 5 m, and the specific height can be adjusted according to actual conditions);
s2, closing the main gas injection valve 9 and the conservator gas injection valve 4, connecting the vacuum pump system 23 and the conservator gas extraction valve 5, vacuumizing, and simultaneously opening the high-precision pressure gauge 6 to observe the internal pressure;
s3, connecting the main body oil injection valve 14 with the oil injection system 26 for oil injection, and observing the oil level condition of the oil level indicator 18 on the oil conservator 2;
s4, closing the main body oil filling valve 14, standing and observing the high-precision pressure gauge 6 to detect the internal pressure;
and S5, connecting the characteristic gas bottle 25 to the gas flowmeter control system 24, connecting the gas flowmeter control system 24 with the main body gas injection valve 9, opening the valve of the characteristic gas bottle 25, adjusting the gas flow rate through the gas flowmeter control system 24, opening the main body gas injection valve 9 to start gas injection, observing and recording the value of the high-precision pressure gauge 6, and finishing the measurement.
The specific implementation mode of the invention is as follows with reference to the attached drawings 1-7:
four holes are opened at 1 top of oil tank, can install main part gas injection valve 9, main part bleeder valve 19, main part pressure release valve 10 and high accuracy manometer 6 respectively, after the conservator 2 assembles with oil tank 1 through connecting pipe system 8, can realize evacuation, oiling, gas injection, detect this device internal pressure function.
The oil tank 1 is provided with a main body suction valve 19 and a main body oil filling valve 14, and can finish the vacuum oil filling work.
Oil tank 1 is equipped with the main part and gets fuel tap 13, can get inside oil appearance, realizes carrying out the gas content chemical examination in the oil to inside oil appearance under the internal environment condition not influencing.
The connecting pipe system can be formed by selecting one connecting pipe with the length of 1 meter and two connecting pipes with the length of 2 meters, and five height combinations with the lengths of 1, 2, 3, 4 and 5 meters can be formed.
And an oil level gauge 18 is arranged on the oil conservator 2, so that the height of the oil surface in the oil conservator can be accurately checked.
All be equipped with main part lifting hook 12 on four lateral walls of oil tank 1 for the oil tank hoist and mount are removed more conveniently.
Two lifting rings are arranged on the oil conservator 2, and when the height is too high, the lifting belts can be passed through to hoist, so that the stability and the safety are guaranteed.
The oil tank 1 is provided with a thermometer seat 27, and the temperature of the medium in the oil tank can be measured after the thermometer is inserted.
The invention can also develop the expanding research:
1. the oil conservator 2 and the oil tank 1 can be separated, the oil tank 1 can independently form a testing device, the oil tank flange 22 at the top of the oil tank 1 is filled with oil after being provided with a sleeve, the tail part of the sleeve is connected with a tested sample piece to carry out high-pressure test, and the insulation performance of the tested sample piece is verified under different pressures and when gas with different characteristics is injected.
2. The invention can also expand the function to carry out the research on the insulating property of the oil paper insulating sample piece under different temperatures and different pressures and the research on the gas solubility in characteristic gas oil.
The method is characterized in that gas solubility tests of gases with different characteristics at different pressures and different temperatures are carried out in the oil-less power equipment, and the test steps are as follows:
s1, setting the height of the connecting pipe system, hoisting the conservator after selection, and connecting the conservator 2, the connecting pipe system 8 and the oil tank 1;
s2, closing the main gas injection valve 9 and the conservator gas injection valve 4, connecting the vacuum pump system 23 with the conservator gas extraction valve 5, vacuumizing, simultaneously opening the high-precision pressure gauge 6 to observe the internal pressure, and pumping the pressure to the required measurement pressure value;
s3, connecting the main body oil injection valve 14 with the oil injection system 26 for oil injection, and observing the oil level condition of the oil level indicator 18 on the oil conservator 2;
s4, closing the main body oil filling valve 14, standing and observing the high-precision pressure gauge 6 to detect the internal pressure;
s5, connecting the characteristic gas bottle 25 to the gas flowmeter control system 24, connecting the gas flowmeter control system 24 with the main body gas injection valve 9, opening the valve of the characteristic gas bottle 25, adjusting the gas flow rate through the gas flowmeter control system 24, opening the main body gas injection valve 9 to start gas injection, and observing and recording the values of the thermometer and the high-precision pressure gauge 6 in the thermometer seat 27;
and S6, sampling oil through the main oil sampling valve 13 at the planned time node, and testing the gas content in the oil to obtain the gas solubility of the characteristic gas under the pressure.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a device of experimental few oily power equipment internal characteristic gas and pressure relation which characterized in that: the device comprises an oil tank (1), an oil conservator (2), an oil conservator air injection valve (4), an oil conservator air extraction valve (5), a high-precision pressure gauge (6), a connecting pipe system (8), a main body air injection valve (9), a main body pressure release valve (10), a main body oil extraction valve (13), a main body oil injection valve (14), a main body oil drain valve (15), an oil conservator injection hole (17), a main body air extraction valve (19), an oil tank flange (22), a vacuum pump system (23), a gas flowmeter control system (24), a characteristic gas bottle (25) and an oil injection system (26); the bottom of the oil conservator (2) is connected with one end of a connecting pipe system (8), and the other end of the connecting pipe system (8) is connected with the top of the oil tank (1) through an oil tank flange (22); the top of the oil tank (1) is provided with a main body gas injection valve (9), a main body gas extraction valve (19) and a main body pressure release valve (10), a characteristic gas bottle (25) is connected with the main body gas injection valve (9) through a gas flowmeter control system (24), the side wall of the oil tank (1) is provided with a main body oil extraction valve (13), the bottom of the side wall of the oil tank (1) is provided with a main body oil injection valve (14), and the main body oil injection valve (14) is connected with an oil injection system (26); the top of the conservator (2) is provided with an conservator air injection valve (4), an conservator air extraction valve (5), a high-precision pressure gauge (6) and an conservator injection hole (17), and a vacuum pump system (23) is connected with the conservator air extraction valve (5).
2. The device for testing the internal characteristic gas-pressure relationship of the oil-less power equipment as claimed in claim 1, wherein: the oil tank (1) is provided with a thermometer seat (27), and the thermometer seat (27) is provided with a thermometer.
3. The device for testing the internal characteristic gas-pressure relationship of the oil-less power equipment as claimed in claim 1, wherein: an oil level gauge (18) is arranged on the oil conservator (2).
4. The device for testing the internal characteristic gas-pressure relationship of the oil-less power equipment as claimed in claim 1, wherein: and a stop valve (7) is arranged on the connecting pipe system (8).
5. The device for testing the internal characteristic gas-pressure relationship of the oil-less power equipment as claimed in claim 1, wherein: and a main body lifting hook (12) is arranged on the side wall of the oil tank (1).
6. The device for testing the internal characteristic gas-pressure relationship of the oil-less power equipment as claimed in claim 1, wherein: the bottom of the oil tank (1) is provided with main body supporting legs (16).
7. The device for testing the internal characteristic gas-pressure relationship of the oil-less power equipment as claimed in claim 1, wherein: the oil tank (1) comprises an oil tank body and an oil tank cover, a main body device body sealing rubber strip (20) is arranged between the oil tank body and the oil tank cover in a matching mode, the oil tank cover, the main body device body sealing rubber strip (20) and the oil tank body are fixed through a main body fixing bolt (11), and two oil conservator hanging rings (3) are arranged on the oil conservator cover; the conservator (2) comprises an conservator box body and an conservator box cover, an conservator sealing rubber strip (21) is arranged between the conservator box body and the conservator box cover in a matched mode, and the conservator box cover, the conservator sealing rubber strip (21) and the conservator box body are fixed through conservator fixing bolts.
8. The apparatus of claim 7, wherein the gas pressure relationship is determined by a gas pressure sensor, the gas pressure sensor is configured to measure the gas pressure relationship: the main body gas injection valve (9), the main body gas extraction valve (19) and the main body pressure release valve (10) are arranged on the oil tank cover; the conservator air injection valve (4), the conservator air extraction valve (5), the high-precision pressure gauge (6) and the conservator injection hole (17) are arranged on the conservator box cover.
9. A test method for the relation between the internal characteristic gas and the pressure of the oil-less power equipment adopts a test device of any one of claims 1 to 8, and is characterized by comprising the following specific steps:
s1, setting the height of the connecting pipe system, hoisting the oil conservator (2) after selection, and connecting the oil conservator (2), the connecting pipe system (8) and the oil tank (1);
s2, closing the main body gas injection valve (9) and the conservator gas injection valve (4), connecting the vacuum pump system (23) with the conservator gas extraction valve (5) and vacuumizing, and simultaneously opening the high-precision pressure gauge (6) to observe the internal pressure;
s3, connecting the main body oil injection valve (14) with an oil injection system (26) for oil injection, and observing the oil level condition of an oil level indicator (18) on the oil conservator (2);
s4, closing the main body oil filling valve (14), standing and observing a high-precision pressure gauge (6) to detect the internal pressure;
and S5, connecting the characteristic gas bottle (25) to a gas flowmeter control system (24), connecting the gas flowmeter control system (24) with a main gas injection valve (9), opening the valve of the characteristic gas bottle (25), adjusting the gas flow rate through the gas flowmeter control system (24), opening the main gas injection valve (9) to start gas injection, observing and recording the numerical value of a high-precision pressure gauge (6), and finishing measurement.
10. A method for testing the gas solubility of different characteristic gases in the interior of oil-less electric equipment by adopting the testing device of any one of claims 1 to 8 is characterized by comprising the following specific steps:
s1, selecting the height of the connecting pipe system (8), hoisting the conservator (2), and connecting the conservator (2), the connecting pipe system (8) and the oil tank (1);
s2, closing the main body gas injection valve (9) and the conservator gas injection valve (4), connecting the vacuum pump system (23) with the conservator gas extraction valve (5) and vacuumizing, simultaneously opening the high-precision pressure gauge (6) to observe the internal pressure, and pumping the pressure to the required measurement pressure value;
s3, connecting the main body oil injection valve (14) with an oil injection system (26) for oil injection, and observing the oil level condition of an oil level indicator (18) on the oil conservator (2);
s4, closing the main body oil filling valve (14), standing and observing a high-precision pressure gauge (6) to detect the internal pressure;
s5, connecting the characteristic gas bottle (25) to a gas flowmeter control system (24), connecting the gas flowmeter control system (24) with a main gas injection valve (9), opening the valve of the characteristic gas bottle (25), adjusting the gas flow rate through the gas flowmeter control system (24), opening the main gas injection valve (9) to start gas injection, and observing and recording the values of a thermometer and a high-precision pressure gauge (6) in a thermometer seat (27);
and S6, sampling oil through the main body oil sampling valve (13) at the scheduled time node, and testing the gas content in the oil to obtain the gas solubility of the characteristic gas under the pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011257535.9A CN112363032A (en) | 2020-11-12 | 2020-11-12 | Device and method for testing relation between internal characteristic gas and pressure of oil-less power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011257535.9A CN112363032A (en) | 2020-11-12 | 2020-11-12 | Device and method for testing relation between internal characteristic gas and pressure of oil-less power equipment |
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| Publication Number | Publication Date |
|---|---|
| CN112363032A true CN112363032A (en) | 2021-02-12 |
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|---|---|---|---|
| CN202011257535.9A Pending CN112363032A (en) | 2020-11-12 | 2020-11-12 | Device and method for testing relation between internal characteristic gas and pressure of oil-less power equipment |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN107314860A (en) * | 2016-04-27 | 2017-11-03 | 上海金艺检测技术有限公司 | The chromatogram diagnostic method of oil-filled transformer loaded switch seepage |
| CN108630400A (en) * | 2018-03-05 | 2018-10-09 | 广东电网有限责任公司佛山供电局 | A kind of oil-immersed transformer balance pressure apparatus for examination and repair and method |
| CN109581158A (en) * | 2018-11-22 | 2019-04-05 | 西南交通大学 | A kind of electricity of transformer oil isolit-hot comprehensive test platform of pressure-stream-and test method |
| CN111638075A (en) * | 2020-05-19 | 2020-09-08 | 中国电力科学研究院有限公司 | Pressure simulation test device for fault gas production of oil-less equipment |
| CN213581186U (en) * | 2020-11-12 | 2021-06-29 | 保定天威保变电气股份有限公司 | Device for testing relation between internal characteristic gas and pressure of oil-less power equipment |
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2020
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| CN102539283A (en) * | 2011-01-06 | 2012-07-04 | 北京盈胜泰科技术有限公司 | System for monitoring ingredient change of insulating oil of transformer |
| CN103149345A (en) * | 2013-02-25 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Detecting method and detecting device for intelligent dissolved gas-in-oil component |
| CN107314860A (en) * | 2016-04-27 | 2017-11-03 | 上海金艺检测技术有限公司 | The chromatogram diagnostic method of oil-filled transformer loaded switch seepage |
| CN108630400A (en) * | 2018-03-05 | 2018-10-09 | 广东电网有限责任公司佛山供电局 | A kind of oil-immersed transformer balance pressure apparatus for examination and repair and method |
| CN109581158A (en) * | 2018-11-22 | 2019-04-05 | 西南交通大学 | A kind of electricity of transformer oil isolit-hot comprehensive test platform of pressure-stream-and test method |
| CN111638075A (en) * | 2020-05-19 | 2020-09-08 | 中国电力科学研究院有限公司 | Pressure simulation test device for fault gas production of oil-less equipment |
| CN213581186U (en) * | 2020-11-12 | 2021-06-29 | 保定天威保变电气股份有限公司 | Device for testing relation between internal characteristic gas and pressure of oil-less power equipment |
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