CN217360124U - Device for measuring electric contact performance - Google Patents
Device for measuring electric contact performance Download PDFInfo
- Publication number
- CN217360124U CN217360124U CN202220965419.0U CN202220965419U CN217360124U CN 217360124 U CN217360124 U CN 217360124U CN 202220965419 U CN202220965419 U CN 202220965419U CN 217360124 U CN217360124 U CN 217360124U
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- contact
- sample
- clamp
- arc ablation
- fixed support
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- 238000002679 ablation Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 18
- 238000005259 measurement Methods 0.000 abstract description 12
- 238000010891 electric arc Methods 0.000 abstract description 10
- 238000009530 blood pressure measurement Methods 0.000 abstract description 3
- 238000011056 performance test Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Abstract
A pressure sensor arranged at the upper end of a fixed support is connected with an upper clamp through an insulating connecting rod, and an electrostatic contact sample is clamped on the upper clamp; a hydraulic rod of a hydraulic servo system arranged at the middle lower part of the fixed support is connected with a lower clamp through an insulating connecting rod, and the lower clamp clamps an electro-kinetic contact sample; the upper clamp and the lower clamp are respectively led out of a lead and externally connected with a 220v power supply and a resistance-variable box to form an electric arc ablation loop; the utility model discloses with four kinds of functions set in an organic whole in the electric arc ablation performance test, accomplish electric arc ablation, temperature rise measurement, contact resistance measurement and pressure measurement, alternate test parameter in the certain limit, realize studying the influence law of different influence factors to electric arc ablation and temperature rise, convenient operation, safe and reliable.
Description
Technical Field
The utility model relates to an electrical contact material capability test technical field, in particular to arc ablation, temperature rise measurement, contact resistance measurement and the pressure measurement's to electrical contact element measure the device of electrical contact performance.
Background
The contact plays a crucial role in electrical components, and the electrical contact performance of the contact must have strict requirements, wherein the contact resistance and the temperature rise are two most basic performance indexes for representing the performance of the contact element.
At present, only standard equipment for testing temperature rise exists at home and abroad, researchers build an electric arc ablation device according to own requirements, and after ablation is completed, samples are respectively loaded into a contact resistance testing device and a temperature rise testing device for testing. In the testing process, parameters such as contact force, stroke, arc ablation current and the like are fixed and unchanged, and the purpose of arc ablation is to test the service life of the arc ablation. After arc ablation, the surface flatness of the contacts changes, and the contact state of the surfaces of the two contacts is accidental when the two contacts are contacted at any time, so that the contact resistance measured each time is not well matched with the temperature rise curve. Therefore, the set-up equipment is not suitable for research and teaching, and the main content of scientific research is to discuss the rule of contact resistance and temperature rise change caused by arc ablation or the rule of influence of the surface morphology of the arc ablation on the contact resistance and the temperature rise. The surface oxide film of the sample can be damaged in the frequent disassembly and assembly process of the sample, and the oxide film is a main factor causing the change of contact resistance and temperature rise, so that no device for measuring the electric contact performance suitable for scientific research and teaching exists at present.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a measure device of electrical contact performance, the device need not dismantle the sample in the test process, realizes studying the influence law of different influence factors to contact resistance and temperature rise.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a device for measuring electric contact performance comprises a fixed support 8, wherein a pressure sensor 1 is arranged at the upper end of the fixed support 8, the pressure sensor 1 is connected with an upper clamp 5-1 through a first insulating connecting rod 9-1, and an electrostatic contact sample 6-1 is clamped on the upper clamp 5-1; a hydraulic servo system 4 is arranged at the middle lower part of the fixed support 8, a hydraulic rod of the hydraulic servo system 4 is connected with a lower clamp 5-2 through a second insulating connecting rod 9-2, and a sample 6-2 in electric contact is clamped on the lower clamp 5-2; the upper clamp 5-1 and the lower clamp 5-2 are respectively led out of an upper lead 7-1 and a lower lead 7-2, and the upper lead 7-1 and the lower lead 7-2 are externally connected with a 220v power supply and a resistance-variable box to form an arc ablation loop.
The electrostatic contact sample 6-1 is provided with a temperature sensor 2 at a position 60mm +/-10 mm away from the sample, and the temperature sensor 2 is fixed on a fixed support 8.
A position sensor 3 is arranged beside the electrokinetic contact sample 6-2 for controlling the up-and-down stroke.
The temperature sensor 2 is fixed on the fixing support 8, and the upper and lower fixing positions of the temperature sensor are adjusted through a long screw hole.
The pressure sensor 1, the position sensor 3 and the hydraulic servo system 4 form signal control and information transmission with an external computer through a PLC, and the temperature sensor 2 forms signal transmission with the external computer.
The utility model has the advantages that:
the utility model discloses with four kinds of functions set in an organic whole in the electric arc ablation capability test, accomplish electric arc ablation, temperature rise measurement, contact resistance measurement and ressure measurement. And the test parameters, namely the frequency of arc ablation, the ablation current, the maximum contact pressure of the contact, the travel distance of the movable contact, the current and the pressure during temperature rise test and the contact resistance under different contact force conditions can be adjusted through remote operation and control of an external computer.
The utility model discloses can simulate ac contactor's the action of opening and shutting, when using the device to measure the electrical contact performance, contact element loading and unloading are convenient, and electric arc ablation return circuit and detection return circuit mutually noninterference can guarantee the precision and the data stability of test result.
In the whole test process, the sample is not required to be disassembled, the test parameters can be changed at will, and the influence rule of different influence factors on the arc ablation and the temperature rise can be researched.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the fixing bracket 8 of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the device for measuring the electrical contact performance comprises a fixed support 8, wherein a pressure sensor 1 is arranged at the upper end of the fixed support 8, the pressure sensor 1 is connected with an upper clamp 5-1 through a first insulating connecting rod 9-1, and an electrostatic contact sample 6-1 is clamped on the upper clamp 5-1; a hydraulic servo system 4 is arranged at the middle lower part of the fixed support 8, a hydraulic rod of the hydraulic servo system 4 is connected with a lower clamp 5-2 through a second insulating connecting rod 9-2, and the lower clamp 5-2 clamps an electro-kinetic contact sample 6-2; the upper clamp 5-1 and the lower clamp 5-2 are respectively led out of an upper lead 7-1 and a lower lead 7-2, and the upper lead 7-1 and the lower lead 7-2 are externally connected with a 220v power supply and a variable resistance box to form an electric arc ablation loop.
The sample 6-1 is contacted with the static electricity, and a temperature sensor 2 is arranged at a position 60mm +/-10 mm away from the sample.
A position sensor 3 is arranged beside the electrokinetic contact sample 6-2 for controlling the up-and-down stroke.
The upper and lower fixed positions of the temperature sensor 2 are adjusted through a long screw hole.
The pressure sensor 1, the position sensor 3 and the hydraulic servo system 4 form signal control and information transmission with an external computer through a PLC, and the temperature sensor 2 forms signal transmission with the external computer.
The utility model discloses a theory of operation does:
when in use, the utility model is arranged in an isolation cabin and remotely controlled by a computer to carry out the operations of electric arc ablation, temperature rise measurement, contact resistance measurement and pressure measurement;
1. arc ablation
Respectively arranging the electrostatic contact sample 6-1 and the electrokinetic contact sample 6-2 into an upper clamp 5-1 and a lower clamp 5-2, and externally connecting an upper lead 7-1 and a lower lead 7-2 with a 220v power supply and a resistance-changing box to form an arc ablation loop; the static contact sample 6-1 is kept still, the up-and-down moving and speed control of the dynamic contact sample 6-2 is controlled by the hydraulic servo system 4, and the feedback signal of the up-and-down moving stroke position is controlled by the position sensor 3, so that the dynamic and static contact samples form arc ablation, and the action of the stroke, the arc ablation speed and the contact pressure on the arc ablation is researched.
2. Temperature rise measurement
After the arc ablation test was completed, the temperature sensor 2 measured and recorded the initial temperature of the dynamic and electrostatic contact samples (the temperature of the electrostatic contact sample 6-1 and the dynamic electrical contact sample 6-2 were the same). And applying a certain current value (which can be set) to the dynamic and electrostatic contact samples through an arc ablation loop, keeping the current value for a period of time (which can be set), measuring and recording the temperatures of the dynamic and electrostatic contact samples again, wherein the temperatures are measured by the temperature sensor 2.
3. Contact resistance measurement
When the dynamic and static contact samples complete the periodic arc ablation test, the dynamic and static contact samples are contacted through the hydraulic servo system 4, the upper lead 7-1 and the lower lead 7-2 are externally connected with a micro-resistance measuring instrument, the contact resistance is measured, and the measuring result is recorded.
4. Pressure value measurement
In the arc ablation test, the pressure during contact needs to be controlled, and each contact is considered to be the same condition until the contact force reaches a set value. The pressure value is measured by the pressure sensor 1 in real time and is output to a computer through a PLC system, so that the contact force reaches a set value in each contact.
Claims (5)
1. A device for measuring electric contact performance is characterized by comprising a fixed support (8), wherein a pressure sensor (1) is arranged at the upper end of the fixed support (8), the pressure sensor (1) is connected with an upper clamp (5-1) through a first insulating connecting rod (9-1), and an electrostatic contact sample (6-1) is clamped on the upper clamp (5-1); a hydraulic servo system (4) is arranged at the middle lower part of the fixed support (8), a hydraulic rod of the hydraulic servo system (4) is connected with a lower clamp (5-2) through a second insulating connecting rod (9-2), and the lower clamp (5-2) clamps an electrically-moved contact sample (6-2); the upper clamp (5-1) and the lower clamp (5-2) are respectively led out of an upper lead (7-1) and a lower lead (7-2), and the upper lead (7-1) and the lower lead (7-2) are externally connected with a 220v power supply and a variable resistance box to form an arc ablation loop.
2. A device for measuring the electrical contact properties according to claim 1, characterized in that the electrostatic contact sample (6-1) is provided with a temperature sensor (2) at a distance of 60mm ± 10mm from the sample, and the temperature sensor (2) is fixed on a fixed support (8).
3. A device for measuring the performance of an electric contact according to claim 2, characterized in that the temperature sensor (2) is fixed on a fixing support (8), and the upper and lower fixing positions of the temperature sensor are adjusted by a long screw hole.
4. A device for measuring the properties of an electrical contact according to claim 1, characterized in that a position sensor (3) is provided beside the sample of electrokinetic contact (6-2) to control its up and down stroke.
5. The device for measuring the electric contact performance according to claim 1, wherein the pressure sensor (1), the position sensor (3) and the hydraulic servo system (4) form signal control and information transmission with an external computer through a PLC, and the temperature sensor (2) forms signal transmission with the external computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220965419.0U CN217360124U (en) | 2022-04-25 | 2022-04-25 | Device for measuring electric contact performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220965419.0U CN217360124U (en) | 2022-04-25 | 2022-04-25 | Device for measuring electric contact performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217360124U true CN217360124U (en) | 2022-09-02 |
Family
ID=83056328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220965419.0U Expired - Fee Related CN217360124U (en) | 2022-04-25 | 2022-04-25 | Device for measuring electric contact performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217360124U (en) |
-
2022
- 2022-04-25 CN CN202220965419.0U patent/CN217360124U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |