CN107192663B - Test system for evaluating electrified service performance of disconnecting switch contact material - Google Patents
Test system for evaluating electrified service performance of disconnecting switch contact material Download PDFInfo
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- CN107192663B CN107192663B CN201710612821.4A CN201710612821A CN107192663B CN 107192663 B CN107192663 B CN 107192663B CN 201710612821 A CN201710612821 A CN 201710612821A CN 107192663 B CN107192663 B CN 107192663B
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- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
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Abstract
The invention belongs to the technical field of electrical materials, and provides a test system for evaluating the electrified service performance of a contact material of an isolating switch, which comprises the following components: a salt spray tank and at least two pairs of serially connected sample pairs; at least two pairs of the series-connected pairs of samples are disposed within the salt spray tank; the sample pair is provided with holes for inserting a first insulating column and a second insulating column, and the sample pair is fixed on end parts of the first insulating column and the second insulating column; a first wire lug is sleeved at the joint of the sample pair and the first insulating column, a second wire lug is sleeved at the joint of the sample pair and the second insulating column, and the first wire lug and the second wire lug are respectively positioned at the upper side and the lower side of the sample pair; the first wire lug and the second wire lug are respectively connected with a first wire and a second wire; wherein the sample pair is two sample blocks of different materials or the same material overlapped with each other. The test system takes current factors into account and enables batch testing.
Description
Technical Field
The invention belongs to the technical field of electrical materials, and particularly relates to a test system for evaluating the electrified service performance of a contact material of an isolating switch.
Background
The isolating switch is one of the electrical equipment with the largest use amount and the largest application range in the power system. The movable contact and the fixed contact are used as key components of the isolating switch, and the working condition of the movable contact and the fixed contact directly affects the safe and stable operation of the power system. The contact corrosion and the heating defect caused by the contact corrosion not only can shorten the service life of the isolating switch, but also can cause serious accidents, thereby threatening the equipment and personal safety of the power grid company. Equipment damage and even large-area power failure accidents caused by the heat generation defect of the isolating switch frequently occur in China.
The conventional test system for evaluating the electrified service performance of the isolating switch contact material does not perform batch detection on the isolating switch contact material under the influence of current factors on the isolating switch contact material.
Disclosure of Invention
In view of the above, the invention provides a test system for evaluating the live service performance of a contact material of an isolating switch, which is used for solving the problem that the existing test system evaluates the live service performance of the contact material of the isolating switch and does not perform batch detection on the contact material of the isolating switch under the influence of current factors on the contact material of the isolating switch.
The specific technical scheme of the invention is as follows:
a test system for evaluating live service performance of a contact material of an isolating switch, comprising: a salt spray tank and at least two pairs of serially connected sample pairs;
at least two pairs of the series-connected pairs of samples are disposed within the salt spray tank;
the sample pair is provided with holes for inserting a first insulating column and a second insulating column, and the sample pair is fixed on end parts of the first insulating column and the second insulating column;
a first wire lug is sleeved at the joint of the sample pair and the first insulating column, a second wire lug is sleeved at the joint of the sample pair and the second insulating column, and the first wire lug and the second wire lug are respectively positioned at the upper side and the lower side of the sample pair;
the first wire lug and the second wire lug are respectively connected with a first wire and a second wire;
wherein the sample pair is two sample blocks of different materials or the same material overlapped with each other.
Further, the method further comprises the following steps: the device comprises a first insulating sleeve, a second insulating sleeve, a first spring and a second spring;
the first insulation sleeve and the first spring are sequentially sleeved on the threaded screw rod of the first insulation column and fixed through a first nut sleeved on the first insulation column;
the second insulating sleeve and the second spring are sequentially sleeved on the threaded screw rod of the second insulating column and are fixed through a second nut sleeved on the second insulating column.
Preferably, the first spring is used for providing elasticity to the first insulating sleeve;
the second spring is used for providing elasticity for the second insulating sleeve.
Preferably, the method further comprises:
a temperature controller;
the temperature controller is arranged in the salt fog box.
Further, the method further comprises the following steps: a fixing plate;
the fixing plate is provided with holes for placing the first insulating columns and the second insulating columns;
the first insulation column is fixedly connected with the fixing plate through a first nut of the first insulation column and the third nut sleeved at the bottom of the first insulation column;
the second insulating column is fixedly connected with the fixing plate through a second nut of the second insulating column and a fourth nut sleeved at the bottom of the second insulating column.
The temperature controller is arranged in the salt fog box.
Further, the method further comprises the following steps: a fixing plate and a second nut;
the fixing plate is provided with a hole, and the insulating column is positioned in the hole;
the insulation column is fixedly connected with the fixing plate through the first nut and the second nut.
Further, the method further comprises the following steps: a fixed bracket;
the fixed support is provided with a groove, and one end of the fixed plate is arranged in the groove, so that the sample pair is placed in a non-horizontal mode.
Preferably, the at least two sample pairs are arranged in parallel.
Preferably, the insulating column is a plastic screw.
Preferably, the plastic screw is one of a nylon screw, a PC screw, a PVDF screw, a PP screw, or a PTFE screw.
Preferably, the fixing plate is a PVC plate.
The invention provides a test system for evaluating the electrified service performance of a contact material of an isolating switch, which comprises the following components: a salt spray tank and at least two pairs of serially connected sample pairs; at least two pairs of the series-connected pairs of samples are disposed within the salt spray tank; the sample pair is provided with holes for inserting a first insulating column and a second insulating column, and the sample pair is fixed on end parts of the first insulating column and the second insulating column; a first wire lug is sleeved at the joint of the sample pair and the first insulating column, a second wire lug is sleeved at the joint of the sample pair and the second insulating column, and the first wire lug and the second wire lug are respectively positioned at the upper side and the lower side of the sample pair; the first wire lug and the second wire lug are respectively connected with a first wire and a second wire; wherein the sample pair is two sample blocks of different materials or the same material overlapped with each other. According to the invention, the test system considers the condition of the isolating switch contact material in the actual service process, at least two pairs of series-connected test sample pairs are arranged in the salt spray box, and the test system considers the influence of current factors on the isolating switch contact material and can detect the isolating switch contact material in batches.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings may be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a partial diagram of a test system for evaluating live performance of an isolator contact material provided in an embodiment of the present invention;
fig. 2 is a partial installation diagram of a test system for evaluating live service performance of a contact material of an isolating switch according to an embodiment of the present invention.
Illustration, 1, sample pair; 2. a first insulating column; 3. a second insulating column; 4. a first ear; 5. a second wire ear; 6. a first wire; 7. a second wire; 8. a first insulating sleeve; 9. a second insulating sleeve; 10. a first spring; 11. a second spring; 12. a first nut; 13. a second nut; 14. a fixing plate; 15. a third nut; 16. and a fourth nut.
Detailed Description
The invention provides a test system for evaluating the live service performance of an isolating switch contact material, which is used for solving the problem that the existing test system is used for evaluating the live service performance of the isolating switch contact material and is not used for detecting the isolating switch contact material in batches under the influence of current factors on the isolating switch contact material.
In order to make the objects, features and advantages of the present invention more comprehensible, the technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
A test system for evaluating live service performance of a contact material of an isolating switch, comprising: a salt spray tank and at least two pairs of series connected sample pairs 1;
at least two pairs of serially connected sample pairs 1 are arranged in the salt spray box;
the sample pair 1 is provided with holes for inserting the first insulating column 2 and the second insulating column 3, and the sample pair 1 is fixed on the end parts of the first insulating column 2 and the second insulating column 3;
the joint of the sample pair 1 and the first insulating column 2 is sleeved with a first wire lug 4, the joint of the sample pair 1 and the second insulating column 3 is sleeved with a second wire lug 5, and the first wire lug 4 and the second wire lug 5 are respectively positioned on the upper side and the lower side of the sample pair 1;
the first wire lug 4 and the second wire lug 5 are respectively connected with a first wire 6 and a second wire 7;
wherein the sample pair 1 is two sample blocks of different materials or the same material overlapped with each other.
In the embodiment of the invention, the test system considers the condition of the isolating switch contact material in the actual service process, at least two pairs of serially connected sample pairs 1 are arranged in the salt spray box, and the test system considers the influence of current factors on the isolating switch contact material and can detect the isolating switch contact material in batches.
The foregoing describes in detail one embodiment of a test system for evaluating the live performance of a contact material of an isolating switch according to the embodiment of the present invention, and the following describes in detail another embodiment of a test system for evaluating the live performance of a contact material of an isolating switch according to the embodiment of the present invention.
Referring to fig. 1, a test system for evaluating live service performance of a contact material of an isolating switch includes: a salt spray tank and at least two pairs of series connected sample pairs 1;
at least two pairs of serially connected sample pairs 1 are arranged in the salt spray box;
the sample pair 1 is provided with holes for inserting the first insulating column 2 and the second insulating column 3, and the sample pair 1 is fixed on the end parts of the first insulating column 2 and the second insulating column 3;
the joint of the sample pair 1 and the first insulating column 2 is sleeved with a first wire lug 4, the joint of the sample pair 1 and the second insulating column 3 is sleeved with a second wire lug 5, and the first wire lug 4 and the second wire lug 5 are respectively positioned on the upper side and the lower side of the sample pair 1;
the first wire lug 4 and the second wire lug 5 are respectively connected with a first wire 6 and a second wire 7;
wherein the sample pair 1 is two sample blocks of different materials or the same material overlapped with each other.
The first insulating column 2 and the second insulating column 3 are made of insulating materials, because the pressure device works under a certain current, and the corrosion dynamics of the sample to 1 can be affected if the first insulating column 2 and the second insulating column 3 are conductors.
In the embodiment of the invention, the sample pair 1 is a first sample block and a second sample block which are placed one above the other.
The first insulating column 2 and the second insulating column 3 play a role in fixing the pair of samples.
The first wire 6 and the second wire 7 should be one above the other to ensure that the current flows from the first test block to the second test block, and simulate the real current trend of the contact material service.
In the embodiment of the invention, the method further comprises the following steps: a first insulating sleeve 8, a second insulating sleeve 9, a first spring 10 and a second spring 11;
the first insulation sleeve 8 and the first spring 10 are sequentially sleeved on the threaded screw rod of the first insulation column 2 and are fixed through a first nut 12 sleeved on the first insulation column 2;
the second insulating sleeve 9 and the second spring 11 are sequentially sleeved on the threaded screw rod of the second insulating column 3 and are fixed through a second nut 13 sleeved on the second insulating column 3.
The function of the first spring 10 and the second spring 11 is to pressurize the sample pair 1, the springs of different parameters being tailored to provide different pressures P according to specific needs. The parameters of the spring are the length of the spring, the outer diameter, the wire diameter, and the material itself of the spring. The first spring 11 and the second spring 12 should also have corrosion resistance, fatigue resistance, etc. to provide a stable pressure to the test piece pair 1. The pressurization is to simulate the actual condition of the contact material in the service process, and the moving contact and the fixed contact are contacted together through a certain pressure to reach the state of a passage.
The first insulating sleeve 8 and the second insulating sleeve 9 function to isolate the specimen pair 1 from the first spring 10 and the second spring 11, the first spring 10 and the second spring 11 being metal, the contact of the first spring 10 and the second spring 11 with the specimen pair 1 being avoided affecting the corrosion kinetics of the specimen pair.
It should be noted that, the first test block and the second test block need to be perforated according to the requirement, so that the first insulating column 2 and the second insulating column 3 just pass through, leaving a margin, and avoiding that static friction between the first insulating column 2 and the second insulating column 3 and the test sample pair 1 causes that the pressurizing force of the first spring 10 and the second spring 11 is not controlled from the past.
In the embodiment of the present invention, the first insulation sleeve 8 and the second insulation 9 are plastic sleeves.
The first nut 12 and the second nut 13 can set the magnitude of the pressure by fixing the lengths of the first spring 10 and the second spring 11, respectively.
In the embodiment of the invention, the method further comprises the following steps:
a temperature controller;
the temperature controller is arranged in the salt fog box and used for adjusting the temperature in the salt fog box.
In the embodiment of the invention, the method further comprises the following steps: a fixing plate;
the fixed plate is provided with holes for placing the first insulating columns 2 and the second insulating columns 3;
the first insulation column 2 is fixedly connected with the fixed plate through a first nut 12 of the first insulation column 2 and a third nut 15 sleeved at the bottom of the first insulation column 2;
the second insulating column 3 is fixedly connected with the fixing plate through a second nut 13 of the second insulating column 3 and a fourth nut 16 sleeved at the bottom of the second insulating column 3.
In the embodiment of the invention, the method further comprises the following steps: a fixed bracket;
the fixed bolster is equipped with the recess, and the one end setting of fixed plate is in the recess for sample pair 1 is non-horizontal and places.
The fixed plate has the effect of fixing the angle, because the sample pair 1 is corroded in the test system in an acceleration way, if the sample pair 1 does not have a certain inclination angle in the process of corrosive medium deposition, the deposition medium can be acted on a certain solid surface force by the sample pair 1, so that the surface area of the sample pair 1 is full of the corrosive medium, the sample pair cannot be contacted with the deposition medium continuously, the test condition is complicated, the corrosion is uneven, the detection is difficult, and the data drift is serious. And adding a fixing plate to ensure that the angles of all the samples are consistent, wherein the angle standard is that no corrosive medium is accumulated.
It should be noted that, according to the experimental design, a plurality of parallel sample pairs may be connected in series to the same fixing plate, and a plurality of non-parallel sample pair groups may be connected in series to different fixing plates. Multiple sets of tests may be performed simultaneously by stringing up multiple identical devices.
In this embodiment, at least two pairs of samples 1 are arranged in parallel.
The first insulating column 2 and the second insulating column 3 are plastic screws.
The plastic screw is one of nylon screw, PC screw, PVDF screw, PP screw or PTFE screw.
In the embodiment of the invention, the first insulating column 2 and the second insulating column 3 are nylon screws.
In the embodiment of the invention, the fixing plate is a PVC plate.
In the embodiment of the invention, the test system can simulate the combined action of the contact materials of the isolating switch in the actual service process, namely under different conditions of pressure, current, temperature and the like. According to the embodiment of the invention, the situation of the contact material of the isolating switch in the actual service process is considered, and the functions of adjustable pressure, current addition and the like are added by analyzing the actual service process of the contact material, so that the first sample block and the second sample block are contacted with each other. In addition, the test system can be used for connecting a plurality of sample pairs in series, and is simultaneously detected, low in cost and convenient to detach.
The foregoing describes in detail one embodiment of a test system for evaluating the live service performance of a contact material of an isolating switch according to the embodiment of the present invention, and the following describes in detail one embodiment of a test system for evaluating the live service performance of a contact material of an isolating switch according to the embodiment of the present invention.
Referring to fig. 1 and 2, the first and second test blocks are perforated left and right according to a certain requirement, so that the first and second insulating columns 2 and 3 can just pass through. The first insulating column 2 is first passed through the first wire lug 5, then passed through the left hole of the sample pair 1 formed by the first sample block and the second sample block which are placed in an overlapping manner, the gap is aligned, then passed through the first plastic sleeve 8, the first spring 10 is connected in series, and the first nut 12 is screwed. Then the second insulating column 3 is firstly connected with the right hole of the sample pair 1 in series, then connected with the second wire lug 5 in series, then the second nut 13 is screwed in series with the first insulating column 2, and finally the mutual pressure of the sample pair 1 is controlled by respectively controlling the lengths of the first spring 10 and the second spring 11 through the tightness of the first nut 12 and the second nut 13, so that the installation of the test of the sample pair 1 is completed.
It should be noted that, according to specific needs, a plurality of parallel sample pairs may be strung on the same fixing plate, and a plurality of non-parallel sample pair groups may be strung on different fixing plates. Several identical devices can also be strung together and several sets of tests can be performed simultaneously.
It should be noted that, referring to fig. 2, the first wire ear 4 and the second wire ear 5 are installed for two reasons: first, the current flows from the first sample block to the second sample block, so that the current condition of the closed switch can be simulated. Secondly, the first wire ear 4 and the second wire ear 5 can cause corrosion under the action of a corrosion medium, dissolved metal can flow through the surface or accumulate on the surface, so that the test condition is complicated, the corrosion is uneven, the measurement is difficult, and the data drift is serious.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A test system for evaluating live service performance of a contact material of an isolating switch, comprising: a salt spray tank and at least two pairs of serially connected sample pairs;
at least two pairs of the series-connected pairs of samples are disposed within the salt spray tank;
the sample pair is provided with holes for inserting a first insulating column and a second insulating column, and the sample pair is fixed on end parts of the first insulating column and the second insulating column;
a first wire lug is sleeved at the joint of the sample pair and the first insulating column, a second wire lug is sleeved at the joint of the sample pair and the second insulating column, and the first wire lug and the second wire lug are respectively positioned at the upper side and the lower side of the sample pair;
the first wire lug and the second wire lug are respectively connected with a first wire and a second wire;
wherein the sample pair is two sample blocks of different materials or the same material overlapped with each other;
the test system further comprises: the device comprises a first insulating sleeve, a second insulating sleeve, a first spring and a second spring;
the first insulation sleeve and the first spring are sequentially sleeved on the threaded screw rod of the first insulation column and fixed through a first nut sleeved on the first insulation column;
the second insulating sleeve and the second spring are sequentially sleeved on the threaded screw rod of the second insulating column and are fixed through a second nut sleeved on the second insulating column;
the test system further comprises: a fixing plate;
the fixing plate is provided with holes for placing the first insulating columns and the second insulating columns;
the first insulation column is fixedly connected with the fixing plate through a first nut of the first insulation column and a third nut sleeved at the bottom of the first insulation column;
the second insulating column is fixedly connected with the fixing plate through a second nut of the second insulating column and a fourth nut sleeved at the bottom of the second insulating column;
the first insulating sleeve and the second insulating sleeve are plastic sleeves;
the first nut and the second nut respectively set the pressure by fixing the lengths of the first spring and the second spring.
2. The test system of claim 1, wherein the first spring is configured to provide a spring force to the first insulating sleeve;
the second spring is used for providing elasticity for the second insulating sleeve.
3. The test system of claim 2, further comprising:
a temperature controller;
the temperature controller is arranged in the salt fog box.
4. A test system according to claim 3, further comprising: a fixed bracket;
the fixed support is provided with a groove, and one end of the fixed plate is arranged in the groove, so that the sample pair is placed in a non-horizontal mode.
5. The test system of claim 4, wherein the at least two pairs of samples are disposed in parallel.
6. The test system of claim 5, wherein the first and second insulating posts are plastic screws.
7. The test system of claim 6, wherein the plastic screw is one of a nylon screw, a PC screw, a PVDF screw, a PP screw, or a PTFE screw.
8. The test system of claim 7, wherein the securing plate is a PVC plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612821.4A CN107192663B (en) | 2017-07-25 | 2017-07-25 | Test system for evaluating electrified service performance of disconnecting switch contact material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612821.4A CN107192663B (en) | 2017-07-25 | 2017-07-25 | Test system for evaluating electrified service performance of disconnecting switch contact material |
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| CN107192663A CN107192663A (en) | 2017-09-22 |
| CN107192663B true CN107192663B (en) | 2023-04-25 |
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| CN107782660B (en) * | 2017-10-24 | 2020-08-14 | 广东电网有限责任公司电力科学研究院 | Test method for evaluating environment durability of disconnecting link contact material |
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| CN204945012U (en) * | 2015-09-08 | 2016-01-06 | 安科工程技术研究院（北京）有限公司 | For the fixture of bimetallic corrosion test |
| CN105717040A (en) * | 2016-04-07 | 2016-06-29 | 青岛科技大学 | Clamp device for pipe flow type dynamic galvanic corrosion tests |
| CN106226696A (en) * | 2016-10-11 | 2016-12-14 | 江苏省电力试验研究院有限公司 | Isolation switch contact contact condition simulation experiment system and method in a kind of GIS |
| CN106442136A (en) * | 2016-10-18 | 2017-02-22 | 北京科技大学 | Device for testing stress corrosion behavior of metal material under fluid high pressure |
| CN206177710U (en) * | 2016-10-18 | 2017-05-17 | 北京科技大学 | Device of test metal material stress corrosion action under fluid high pressure |
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2017
- 2017-07-25 CN CN201710612821.4A patent/CN107192663B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204945012U (en) * | 2015-09-08 | 2016-01-06 | 安科工程技术研究院（北京）有限公司 | For the fixture of bimetallic corrosion test |
| CN105717040A (en) * | 2016-04-07 | 2016-06-29 | 青岛科技大学 | Clamp device for pipe flow type dynamic galvanic corrosion tests |
| CN106226696A (en) * | 2016-10-11 | 2016-12-14 | 江苏省电力试验研究院有限公司 | Isolation switch contact contact condition simulation experiment system and method in a kind of GIS |
| CN106442136A (en) * | 2016-10-18 | 2017-02-22 | 北京科技大学 | Device for testing stress corrosion behavior of metal material under fluid high pressure |
| CN206177710U (en) * | 2016-10-18 | 2017-05-17 | 北京科技大学 | Device of test metal material stress corrosion action under fluid high pressure |
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