CN108896495B - Environment-friendly insulating gas and metal compatibility test simulation device and test method - Google Patents
Environment-friendly insulating gas and metal compatibility test simulation device and test method Download PDFInfo
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- CN108896495B CN108896495B CN201811074300.9A CN201811074300A CN108896495B CN 108896495 B CN108896495 B CN 108896495B CN 201811074300 A CN201811074300 A CN 201811074300A CN 108896495 B CN108896495 B CN 108896495B
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- 239000002184 metal Substances 0.000 title claims abstract description 98
- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000004088 simulation Methods 0.000 title claims abstract description 14
- 238000010998 test method Methods 0.000 title claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 12
- 239000010935 stainless steel Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000007769 metal material Substances 0.000 abstract description 14
- 238000012544 monitoring process Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
- G01N23/225—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion
- G01N23/2251—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material using electron or ion using incident electron beams, e.g. scanning electron microscopy [SEM]
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses an environment-friendly insulating gas and metal compatibility test simulation device and a test method, wherein the device comprises the following steps: stainless steel tank body (1), its characterized in that: an air chamber (2) is fixed in the stainless steel tank body (1), a sealing cover (7) is covered on the top of the air chamber (2), a metal sleeve (8) is connected to the center of the bottom of the sealing cover (7), and a metal heating rod (16) is placed in the metal sleeve (8); the device solves the problem that the prior art does not aim at the related device and the test method for the compatibility of the insulating gas and the metal material in the electrical equipment, and can not effectively test the compatibility of the insulating gas and the metal material.
Description
Technical Field
The invention belongs to the technology of compatibility test of insulating gas and metal, and particularly relates to an environment-friendly device and method for simulating the compatibility test of insulating gas and metal.
Background
In the electrical equipment, in an insulating air chamber taking gas as an insulating medium, the insulating gas can be fully contacted with other parts of the equipment, and the electrical equipment generally works continuously for a long time; the metal in the equipment such as the diversion busbar is mixed with about 70 ℃ of temperature rise under normal working conditions, and the local temperature can be higher under the conditions of faults and the like. Considering temperature rise and fault conditions, whether a novel insulating gas used in the electric equipment reacts with a metal material or not to influence the normal working operation of the equipment becomes a concern in the field. Therefore, before the novel insulating gas is applied to the electrical equipment, the compatibility of the gas and the metal parts must be ensured, the corrosion to the equipment materials is avoided, and the insulating gas is not decomposed, so that the reliable existence of the main component of the novel insulating gas and the reliability of the metal materials are ensured.
The prior art does not aim at the related device and the test method for the compatibility of the insulating gas and the metal material in the electrical equipment, and cannot effectively test the compatibility of the insulating gas and the metal material.
Disclosure of Invention
The invention aims to solve the technical problems that: the environment-friendly insulating gas and metal compatibility test simulation device and the environment-friendly insulating gas and metal compatibility test method are provided to solve the problem that the prior art does not aim at the related device and test method of the insulating gas and metal material compatibility in electrical equipment and cannot effectively test the insulating gas and metal material compatibility.
The technical scheme of the invention is as follows:
an environment-friendly insulating gas and metal compatibility test simulation device, which comprises: the stainless steel tank body is internally fixed with an air chamber, the top of the air chamber is covered with a sealing cover, the center of the bottom of the sealing cover is connected with a metal sleeve, and a metal heating rod is placed in the metal sleeve.
And the sealing cover is provided with a valve which is connected with the air pipe.
The sealing cover is provided with a barometer.
A sealing groove is arranged at the joint of the air chamber and the stainless steel tank body, and a sealing ring is arranged in the sealing groove.
The bottom of the sealing cover is provided with a first temperature sensor; a second temperature sensor is arranged on the outer wall of the metal sleeve; the first temperature sensor and the second temperature sensor of the second temperature sensor are connected with a digital thermometer.
The material of the metal sleeve is the same as the material of the metal to be detected; the metal to be measured is fixed on the outer wall of the metal sleeve through a metal wire which is the same as the metal to be measured in material.
The test method of the environment-friendly insulating gas and metal compatibility test simulation device comprises the following steps:
step 1, preparation before test: before each experiment, the device is wiped by absolute ethyl alcohol, the metal to be detected is fixed on the outer wall of the metal sleeve, and then the metal sleeve is placed into a gas chamber to detect the air tightness of the device; the method comprises the following specific steps: opening a valve switch, connecting an air pipe to a vacuum pump, opening a positive air pump to vacuumize the air chamber until the air pressure representation number is-0.1 MPa, closing the valve switch and the vacuum pump, and standing for 60s; reading the number of the barometer again after 60s, and if the number of the barometer is not different between the front and back two times, indicating that the device has good air tightness;
step 2, inflating: connecting an air pipe to the gas interface to be detected, and closing a valve switch after the inflation is completed;
step 3, test: after the inflation is completed, the device is connected with a power supply, and the heating rod heats the air chamber in the tank body;
and step 4, after the test is finished, determining whether the gas is compatible with the metal to be tested through the change of the metal to be tested.
The method for determining whether the gas is compatible with the metal to be tested according to the change of the metal to be tested in the step 4 is as follows: after observing the color of the metal to be detected to determine whether the metal to be detected is compatible, detecting the metal to be detected by a scanning electron microscope, checking the surface morphology and the element composition, and determining whether the metal to be detected is compatible.
The invention has the beneficial effects that:
the invention can meet the test requirement of researching the compatibility of the insulating gas and the metal material contacted with the insulating gas in the electrical equipment, can simulate the contact test of the insulating gas and the material under various real working conditions, and provides an important test platform for evaluating the reliability of the insulating gas.
The device can provide researchers with compatibility tests of insulating gas and metal materials under various conditions such as different air pressures, different temperatures, different materials and the like, and has high reliability, high stability and safety.
The device disclosed by the invention can be used for researching the compatibility of the insulating gas and the metal material, and related technicians can be used for researching the compatibility test of the environment-friendly gas and the internal materials of equipment such as the insulating sealing material on the premise of definite test purposes after modifying, so that the application scene of the device is further expanded.
The device can fully simulate the working environment in the insulating air chamber in the running process of the electric equipment, simulate the actual working condition of the metal contact in the electric equipment by controlling the temperature of the heating rod, ensure that the amount of the used gas cannot change in a good closed environment, fully simulate the working environment of various electric equipment, and accurately reflect the compatibility condition of the environment-friendly insulating gas and various metal materials under the conditions of different air pressures and different temperatures.
The invention solves the problems that the prior art does not aim at the related device and the test method for the compatibility of the insulating gas and the metal material in the electrical equipment, and the compatibility of the insulating gas and the metal material can not be effectively tested.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the bottom of the seal cap of the present invention;
FIG. 3 is a schematic top view of the seal cap of the present invention;
FIG. 4 is a schematic view of a heating rod according to the present invention.
Detailed Description
An environment-friendly insulating gas and metal compatibility test simulation device, which comprises: the stainless steel tank body 1, the stainless steel tank body 1 internal fixation has air chamber 2, and air chamber 2 top is covered with sealed lid 7, and sealed lid 7 bottom central point puts and is connected with metal sleeve 8, has placed metal heating rod 16 in the metal sleeve 8.
The stainless steel tank body 1 and the sealing cover 7 are assembled by adopting the screw 6, so that the technical requirements of bearing 0-0.4 Mpa of air pressure and having good tightness can be met.
The sealing cover 7 is provided with a valve 11, and the valve 11 is connected with an air pipe 12. The bottom end of the valve 11 is connected with the sealing cover 7 and is communicated with the air chamber 2, the top end of the valve 11 is a threaded interface with the outer diameter of 6mm, the valve can be directly connected with an air pipe 12 with the inner diameter of 6mm, and the sealing performance of the interface can be enhanced by adopting a threaded design at the joint. The valve is used for filling and discharging test gas into and from the air chamber.
The sealing cover 7 is provided with a barometer 14; the barometer measures the air pressure in the air chamber through an air hole 13 on the sealing cover 7. The barometer 14 is used to monitor the pressure of the gas that is charged into the chamber 2 during the test. And in the whole test process, whether the device has air leakage phenomenon or not can be monitored, and the reliability of air chamber sealing is ensured.
The air chamber 2 is provided with seal groove 4 with stainless steel tank body 1 junction, is provided with sealing washer 5 in the seal groove 4. The radius of the inner wall of the stainless steel tank body 1 is 60mm, the radius of the outer wall is 80mm, the thickness of the outer wall of the air chamber 2 is 20mm, the depth of the air chamber 2 is 150mm, the height of the outer wall is 165mm, and the thickness of the bottom of the air chamber 2 is 15mm. The sealing groove 4 is arranged at the joint of the air chamber 2 and the sealing cover 7, and the sealing ring 5 is a high-temperature-resistant sealing ring, so that the air chamber and the sealing cover can be tightly combined, and the tightness of the device is ensured. In order to ensure that the heat in the air chamber maintains a constant value, the heat preservation effect is improved, a layer of sponge heat preservation layer is arranged on the outer wall of the air chamber, and the heat dissipation is reduced.
The bottom of the sealing cover 7 is provided with a first temperature sensor 9; a second temperature sensor 10 is arranged on the outer wall of the metal sleeve 8; second temperature sensor the first temperature sensor 9 and the second temperature sensor 10 are connected with a digital thermometer.
The first temperature sensor 9 is used for monitoring the temperature of the gas in the gas chamber; the second temperature sensor 10 is used for monitoring the temperature of the metal sleeve; the two temperature sensors are respectively connected with a digital thermometer, so that the temperature and the temperature change process of the metal sleeve and the test gas to be tested in the air chamber can be visually observed.
The metal sleeve 8 is a cylinder with the height of 100mm, the radius of the outer wall of the metal sleeve 8 is 20mm, the radius of the inner wall of the metal sleeve 8 is 15mm, the thickness of the metal sleeve is 5mm, and the thickness of the bottom of the metal sleeve 8 is 5mm.
The material of the metal sleeve 8 is the same as that of the metal to be detected; the metal to be measured is fixed on the outer wall of the metal sleeve 8 through metal wires which are the same as the metal to be measured in material.
The middle of the upper part of the sealing cover is designed as a hollow 15, the hollow 15 is connected with the inner core of the metal sleeve 8, a metal heating rod 16 is placed, the metal sleeve 8 and the sealing cover 7 are connected by adopting a flange, the sealing tightness of the connecting part is ensured by using a sealing ring, the metal heating rod is in a cylindrical shape with the radius of 15mm and the height of 50mm, and the top end of the heating rod 16 is connected with a power supply through a wire.
The test method of the environment-friendly insulating gas and metal compatibility test simulation device comprises the following steps:
step 1, preparation before test: before each experiment, the device is wiped by absolute ethyl alcohol, the metal to be detected is fixed on the outer wall of the metal sleeve, and then the metal sleeve is placed into a gas chamber to detect the air tightness of the device; the method comprises the following specific steps: opening a valve switch, connecting an air pipe to a vacuum pump, opening a positive air pump to vacuumize the air chamber until the air pressure representation number is-0.1 MPa, closing the valve switch and the vacuum pump, and standing for 60s; reading the number of the barometer again after 60s, and if the number of the barometer is not different between the front and back two times, indicating that the device has good air tightness;
step 2, inflating: connecting an air pipe to the gas interface to be detected, and closing a valve switch after the inflation is completed; the pressure in the air chamber reaches the test condition.
Step 3, test: after the inflation is completed, the device is connected with a power supply, and the heating rod heats the air chamber in the tank body; the temperature was brought to test conditions and maintained.
And step 4, after the test is finished, determining whether the gas is compatible with the metal to be tested through the change of the metal to be tested.
Determination by variation of the metal to be measured as described in step 4 the method for judging whether the gas is compatible with the metal to be tested is as follows: determining whether the metal to be detected is compatible or not by observing the color of the metal to be detected, and observing whether the color of the metal to be detected changes or not; and detecting the metal to be detected with the color change by a scanning electron microscope, checking the surface morphology and the element composition, and determining whether the metal to be detected is compatible.
Claims (6)
1. An environment-friendly insulating gas and metal compatibility test simulation device, which comprises: stainless steel tank body (1), its characterized in that: an air chamber (2) is fixed in the stainless steel tank body (1), a sealing cover (7) is covered on the top of the air chamber (2), a metal sleeve (8) is connected to the center of the bottom of the sealing cover (7), and a metal heating rod (16) is placed in the metal sleeve (8); a sealing groove (4) is arranged at the joint of the air chamber (2) and the stainless steel tank body (1), and a sealing ring (5) is arranged in the sealing groove (4); a sponge heat-insulating layer is arranged on the outer wall of the air chamber; the material of the metal sleeve (8) is the same as the material of the metal to be detected; the metal to be measured is fixed on the outer wall of the metal sleeve (8) through a metal wire which is the same as the metal to be measured in material.
2. The environment-friendly insulating gas and metal compatibility test simulation device according to claim 1, wherein: the sealing cover (7) is provided with a valve (11), and the valve (11) is connected with an air pipe (12).
3. The environment-friendly insulating gas and metal compatibility test simulation device according to claim 1, wherein: the sealing cover (7) is provided with a barometer (14).
4. The environment-friendly insulating gas and metal compatibility test simulation device according to claim 1, wherein: the bottom of the sealing cover (7) is provided with a first temperature sensor (9); a second temperature sensor (10) is arranged on the outer wall of the metal sleeve (8); the second temperature sensor the first temperature sensor (9) and the second temperature sensor (10) are connected with a digital thermometer.
5. The test method of the environment-friendly insulating gas and metal compatibility test simulation device as claimed in claim 1, which comprises the following steps:
step 1, preparation before test: before each experiment, the device is wiped by absolute ethyl alcohol, the metal to be detected is fixed on the outer wall of the metal sleeve, and then the metal sleeve is placed into a gas chamber to detect the air tightness of the device; the method comprises the following specific steps: opening a valve switch, connecting an air pipe to a vacuum pump, opening a positive air pump to vacuumize the air chamber until the air pressure representation number is-0.1 MPa, closing the valve switch and the vacuum pump, and standing for 60s; reading the number of the barometer again after 60s, and if the number of the barometer is not different between the front and back two times, indicating that the device has good air tightness;
step 2, inflating: connecting an air pipe to the gas interface to be detected, and closing a valve switch after the inflation is completed;
step 3, test: after the inflation is completed, the device is connected with a power supply, and the heating rod heats the air chamber in the tank body;
and step 4, after the test is finished, determining whether the gas is compatible with the metal to be tested through the change of the metal to be tested.
6. The method for testing the environment-friendly insulating gas and metal compatibility test simulation device according to claim 5, wherein the method comprises the following steps: the method for determining whether the gas is compatible with the metal to be tested according to the change of the metal to be tested in the step 4 is as follows: after observing the color of the metal to be detected to determine whether the metal to be detected is compatible, detecting the metal to be detected by a scanning electron microscope, checking the surface morphology and the element composition, and determining whether the metal to be detected is compatible.
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| CN201811074300.9A CN108896495B (en) | 2018-09-14 | 2018-09-14 | Environment-friendly insulating gas and metal compatibility test simulation device and test method |
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| CN201811074300.9A CN108896495B (en) | 2018-09-14 | 2018-09-14 | Environment-friendly insulating gas and metal compatibility test simulation device and test method |
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| CN108896495A CN108896495A (en) | 2018-11-27 |
| CN108896495B true CN108896495B (en) | 2024-04-12 |
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