CN209911456U - Insulating material resistivity measuring clamp - Google Patents
Insulating material resistivity measuring clamp Download PDFInfo
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- CN209911456U CN209911456U CN201920413434.2U CN201920413434U CN209911456U CN 209911456 U CN209911456 U CN 209911456U CN 201920413434 U CN201920413434 U CN 201920413434U CN 209911456 U CN209911456 U CN 209911456U
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Abstract
The utility model belongs to the technical field of material physical property characteristics is characterized and is measured and use, a insulating material resistivity measurement anchor clamps is disclosed, including the cushion cap, locate last anchor clamps and lower anchor clamps on the cushion cap are located last electrode assembly on the anchor clamps, and are located lower electrode assembly on the anchor clamps down. The utility model can clamp the sample through the longitudinal elasticity of the upper electrode and the lower electrode, ensure the stability of the contact conductive path when the sample is measured, and simultaneously facilitate the adjustment of the sample, and the operation flow of taking and placing the sample is simple and convenient; materials with excellent conductivity such as platinum and platinum wires are preferably selected as circuit leads, so that the accuracy of measured data is ensured; the insulation is improved, and discharging and signal interference during measurement are prevented, so that the stability and effectiveness of measurement data are ensured.
Description
Technical Field
The utility model belongs to the technical field of the material physical property sign and the application technique of measurement and specifically relates to an insulating material resistivity measurement anchor clamps are related to.
Background
Resistivity is an extremely important index for evaluating the insulation performance of an insulating material, and in the production and application of the insulating material, the insulation resistivity is often required to be measured. The quality of the test fixture is resistance and electricityThe key of the accurate test of the resistivity parameter is that the no-load insulation resistance is required to be more than 1x10 within the test temperature range during the design of the clamp14Omega. However, since the test jig itself leaks current or is affected by internal and external interference signals, a large error is easily generated when measuring the resistance of a dielectric material having a high-temperature resistivity. Therefore, in order to improve the measurement accuracy when measuring a high insulation resistivity material, it is necessary to eliminate or reduce the influence of internal and external interference signals in addition to improving the no-load insulation resistance of the test fixture.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide an insulating material resistivity measurement anchor clamps, produce the technical problem of great error easily when solving among the prior art and measuring.
In order to achieve the technical purpose, the technical scheme of the utility model provides an insulating material resistivity measuring clamp, which comprises a bearing platform, an upper clamp and a lower clamp which are arranged on the bearing platform, an upper electrode component which is arranged on the upper clamp, and a lower electrode component which is arranged on the lower clamp;
the lower clamp comprises a lower support rod fixedly connected with the bearing platform, a lower clamping finger fixedly connected with the upper end of the lower support rod and an insulating seat fixedly connected with the lower end of the lower support rod;
the upper clamp comprises an upper supporting rod which is arranged in parallel with the lower supporting rod and is elastically connected with the bearing platform, and an upper clamping finger which is fixedly connected with the upper end of the upper supporting rod and extends towards the lower clamping finger;
the lower electrode assembly comprises a lower electrode arranged on the lower clamping finger, a lower electrode insulating gasket arranged between the lower electrode and the lower clamping finger, and a lower electrode lead arranged in the lower support rod and connected with the lower electrode;
the upper electrode assembly comprises an upper electrode arranged on the upper clamping finger, an upper electrode insulating gasket arranged between the upper electrode and the upper clamping finger, and an upper electrode lead arranged in the upper supporting rod and connected with the upper electrode;
wherein, ceramic guide sleeves are sleeved outside the upper electrode lead and the lower electrode lead.
Compared with the prior art, the beneficial effects of the utility model include: the sample is clamped by the upper electrode and the lower electrode in a longitudinal elastic mode, so that a contact conductive path is stable during sample measurement, the sample is convenient to adjust, and the sample taking and placing operation process is simple and convenient; materials with excellent conductivity such as platinum and platinum wires are preferably selected as circuit leads, so that the accuracy of measured data is ensured; the insulation is improved, and discharging and signal interference during measurement are prevented, so that the stability and effectiveness of measurement data are ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
fig. 3 is an enlarged view at B in fig. 1.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1 to 3, the utility model provides an insulation material resistivity measuring clamp, which comprises a bearing platform 1, an upper clamp 2 and a lower clamp 3 arranged on the bearing platform, an upper electrode assembly 4 arranged on the upper clamp 2, and a lower electrode assembly 5 arranged on the lower clamp 3;
the lower clamp 3 comprises a lower support rod 31 fixedly connected with the bearing platform 1, a lower clamping finger 32 fixedly connected with the upper end of the lower support rod 31, and an insulating seat 33 fixedly connected with the lower end of the lower support rod 31;
the upper clamp 2 comprises an upper support rod 21 which is arranged in parallel with the lower support rod 31 and is elastically connected with the bearing platform 1, and an upper clamping finger 22 which is fixedly connected with the upper end of the upper support rod 21 and extends towards the lower clamping finger 32;
the lower electrode assembly 5 comprises a lower electrode 51 disposed on the lower clamping finger 32, a lower electrode insulating pad 52 disposed between the lower electrode 51 and the lower clamping finger 32, and a lower electrode lead 53 disposed in the lower supporting rod 31 and connected to the lower electrode 51;
the upper electrode assembly 4 comprises an upper electrode 41 arranged on the upper clamping finger 22, an upper electrode insulating gasket 42 arranged between the upper electrode 41 and the upper clamping finger 22, and an upper electrode lead 43 arranged in the upper support rod 21 and connected with the upper electrode 41;
the ceramic guide sleeves 431 and 531 are sleeved outside the upper electrode lead 43 and the lower electrode lead 53.
When the insulating material resistivity measuring clamp is used, an electrical heating furnace and the like can be matched for carrying out electrical testing on a dielectric material, the upper clamp 2 and the lower clamp 3 clamp the dielectric material and extend into the electrical heating furnace, and the upper electrode 41 and the lower electrode 51 which correspond to the upper clamp 2 and the lower clamp 3 apply testing voltage to the dielectric material, so that a testing result is obtained. The upper clamp 2 and the lower clamp 3 are made of longitudinal elastic clamping dielectric materials, so that a contact conductive path is stable when a sample is measured, the sample is convenient to adjust, and the sample taking and placing operation process is simple and convenient. In the whole test process, the upper electrode insulating gasket 42 and the lower electrode insulating gasket 52 are respectively used for isolating the upper electrode 41 from the upper clamping finger 22 and isolating the lower electrode 51 from the lower clamping finger 32, so as to prevent electric leakage and signal interference; the ceramic guide sleeves 431 and 531 are sleeved outside the upper electrode lead 43 and the lower electrode lead 53 to prevent discharge and signal interference during measurement, and the ceramic guide sleeves can be made of alumina ceramics.
The upper and lower clamping fingers 22, 32 can be made of 2520 stainless steel, are mainly used for supporting the sample, keep the stability of the sample in the measuring process, have excellent high temperature resistance, and are suitable for the high-temperature environment in the electric heating furnace. The upper and lower support rods can also be made of 2520 stainless steel, the main body has the function of supporting the clamping fingers, the lead wires are arranged in the main body, and the main body has excellent high-temperature resistance and is also suitable for the high-temperature environment in the electric heating furnace. Platinum wires may be used for both the upper electrode lead 43 and the lower electrode lead 53 to provide excellent electrical conductivity.
As a more specific scheme: the upper electrode insulating gasket 42 and the lower electrode insulating gasket 52 are both ceramic gaskets to provide excellent electrical conductivity and high temperature resistance.
In order to further avoid the electric leakage escaping to the insulating seat, the following specific scheme is provided: the surface of insulating seat 33 is equipped with the silver thick liquid cladding material of ground connection, and this silver thick liquid cladding material can discharge the electric leakage that escapes to insulating seat 33 department, reaches earth leakage protection's effect.
In order to further avoid the leakage from the clamp from escaping to the bearing platform, the following specific scheme is provided: and a mica high-temperature insulating sheet 6 is arranged between the lower support rod 31 and the bearing platform 1. Mica high temperature insulation piece has high temperature resistant and insulating good performance, and the electric contact of bracing piece and cushion cap 1 under isolated prevents that the electric charge from discharging when the experiment from influencing the experimental data.
In order to further ensure the leakage of the lead, the following specific scheme is provided: a plurality of polytetrafluoroethylene insulation blocks are arranged between the upper electrode lead 43 and the upper support rod 21 and between the lower electrode lead 53 and the lower support rod. The polytetrafluoroethylene insulating block has good insulating property, can play an electric isolation role while playing a fixing role on the lead wires in the upper supporting rod and the lower supporting rod, and prevents electric leakage and signal interference.
As a specific scheme: the shielding pipe 7 is sleeved outside the lower support rod 31, so that the heat capacity can be shielded, the effect of supporting the lower clamping finger 32 is achieved, and the ceramic pipe is sleeved to prevent electric charge leakage. Furthermore, the shielding tube 7 is made of metal, and the outer wall of the shielding tube is provided with a plurality of sheet-shaped or continuous thread-shaped metal sheets 71, so that the metal material is favorable for heat conduction and signal shielding.
As a preferred embodiment: the upper electrode 41 and the lower electrode 51 are both T-shaped or L-shaped electrodes. The T-shaped or L-shaped electrode has excellent conductivity, the surface area of the transverse part of the T-shaped or L-shaped electrode is large, the T-shaped or L-shaped electrode is used for being in contact with a tested sample, so that the electrical contact is more sufficient, and the longitudinal part of the T-shaped or L-shaped electrode is used for being connected with a lead. The upper electrode 41 and the lower electrode 51 may be made of a conductive material, such as platinum, gold, platinum-rhodium alloy, etc., which has a small influence on signal interference and is stable and resistant to high temperature.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides an insulating material resistivity measuring clamp which characterized in that: the device comprises a bearing platform, an upper clamp and a lower clamp which are arranged on the bearing platform, an upper electrode assembly arranged on the upper clamp, and a lower electrode assembly arranged on the lower clamp;
the lower clamp comprises a lower support rod fixedly connected with the bearing platform, a lower clamping finger fixedly connected with the upper end of the lower support rod and an insulating seat fixedly connected with the lower end of the lower support rod;
the upper clamp comprises an upper supporting rod which is arranged in parallel with the lower supporting rod and is elastically connected with the bearing platform, and an upper clamping finger which is fixedly connected with the upper end of the upper supporting rod and extends towards the lower clamping finger;
the lower electrode assembly comprises a lower electrode arranged on the lower clamping finger, a lower electrode insulating gasket arranged between the lower electrode and the lower clamping finger, and a lower electrode lead arranged in the lower support rod and connected with the lower electrode;
the upper electrode assembly comprises an upper electrode arranged on the upper clamping finger, an upper electrode insulating gasket arranged between the upper electrode and the upper clamping finger, and an upper electrode lead arranged in the upper supporting rod and connected with the upper electrode;
wherein, ceramic guide sleeves are sleeved outside the upper electrode lead and the lower electrode lead.
2. The insulation material resistivity measurement jig of claim 1, characterized in that: the upper electrode insulating gasket and the lower electrode insulating gasket are both ceramic gaskets.
3. The insulation material resistivity measurement jig of claim 1, characterized in that: and the surface of the insulating seat is provided with a grounded silver paste coating.
4. The insulation material resistivity measurement jig of claim 1, characterized in that: and a mica high-temperature insulating sheet is arranged between the lower supporting rod and the bearing platform.
5. The insulation material resistivity measurement jig of claim 1, characterized in that: and a plurality of polytetrafluoroethylene insulation blocks are arranged between the upper electrode lead and the upper support rod and between the lower electrode lead and the lower support rod.
6. The insulation material resistivity measurement jig of claim 1, characterized in that: and the shielding pipe is sleeved outside the lower support rod.
7. The insulation material resistivity measurement jig of claim 6, characterized in that: the shielding pipe is made of metal, and the outer wall of the shielding pipe is provided with a plurality of sheet-shaped or continuous thread-shaped metal sheets.
8. The insulation material resistivity measurement jig of claim 1, characterized in that: the upper electrode and the lower electrode are both T-shaped or L-shaped electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413434.2U CN209911456U (en) | 2019-03-29 | 2019-03-29 | Insulating material resistivity measuring clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920413434.2U CN209911456U (en) | 2019-03-29 | 2019-03-29 | Insulating material resistivity measuring clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209911456U true CN209911456U (en) | 2020-01-07 |
Family
ID=69033465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920413434.2U Active CN209911456U (en) | 2019-03-29 | 2019-03-29 | Insulating material resistivity measuring clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209911456U (en) |
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2019
- 2019-03-29 CN CN201920413434.2U patent/CN209911456U/en active Active
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