CN111239443A - Clamp for detecting direct current resistance of distribution network cable - Google Patents
Clamp for detecting direct current resistance of distribution network cable Download PDFInfo
- Publication number
- CN111239443A CN111239443A CN202010110914.9A CN202010110914A CN111239443A CN 111239443 A CN111239443 A CN 111239443A CN 202010110914 A CN202010110914 A CN 202010110914A CN 111239443 A CN111239443 A CN 111239443A
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- handle
- cable
- distribution network
- direct current
- clamp
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to a clamp for detecting direct current resistance of a distribution network cable, which is technically characterized in that: including T shape nut, V type clamp splice, metal measuring bar, U type seat and handle, T shape nut is two and the symmetry is installed at U type seat both ends, and the head of two T shape nuts is in the same place with the V type clamp splice installation that is used for pressing from both sides tight cable respectively, the handle is installed at U type seat lateral part central authorities and one end and is in the same place with the metal measuring bar installation, and this handle is inside to be the metal material and is linked together with the metal measuring bar, and this handle other end is equipped with two jacks that are used for connecting current joint and voltage test to connect. The invention has reasonable design, can effectively and reliably connect the detection equipment with the cable, realizes the direct current resistance detection function of the distribution network cable with the whole shaft (long distance), effectively improves the direct resistance detection efficiency of the whole shaft cable, avoids the inconvenience and waste caused by processing the cable end, can be widely used for the direct resistance test of the whole shaft cable, and can also be popularized to other similar test occasions of a power system.
Description
Technical Field
The invention belongs to the technical field of distribution network cables, and particularly relates to a clamp for detecting direct current resistance of a distribution network cable.
Background
With the development of cities, cables are applied to power systems on a large scale, particularly, distribution cables are important equipment of urban power grids, and the stability of the distribution cables plays an important role in power supply reliability.
When a power department purchases cables, various indexes of the distribution network cables need to be detected, wherein the detection of direct current resistance of the cables is an extremely important link. At present, the direct current resistance detection of the distribution network cable is basically carried out under the laboratory condition, a randomly-extracted section of about 1.5m cable core is detected through detection equipment, although the direct resistance condition of the section of cable can be effectively detected by the method, the direct resistance level of the whole-axis (long-distance) cable cannot be fully represented.
The conventional whole-axis (long-distance) cable direct resistance test usually needs to process two ends of a cable firstly, a section of core conductor is reserved, current and voltage wire clamps are convenient to fix, the detection efficiency is influenced, the cable is wasted, and therefore the problem is solved by a more effective direct resistance measurement clamp.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the clamp for detecting the direct current resistance of the distribution network cable, which has the advantages of reasonable design, accuracy, reliability, convenience in use and capability of effectively avoiding waste.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the utility model provides an anchor clamps for joining in marriage net cable direct current resistance detection, includes T shape nut, V type clamp splice, metal measuring bar, U type seat and handle, the T shape nut is two and the symmetry is installed at U type seat both ends, and the head of two T shape nuts is in the same place with the V type clamp splice installation that is used for pressing from both sides tight cable respectively, the handle is installed at U type seat lateral part central authorities and one end and is in the same place with the metal measuring bar installation, and this handle is inside to be the metal material and to be linked together with the metal measuring bar, and this handle other end is equipped with two jacks that are used for connecting current joint and voltage test to connect.
The outer side of the metal measuring rod is provided with a hard insulating layer, and the surface of the handle is made of hard insulating materials.
The T-shaped nut, the V-shaped clamping block and the U-shaped seat are all made of metal materials.
The invention has the advantages and positive effects that:
1. the invention ensures the tightness of the clamp and the distribution network cable end through the two groups of V-shaped clamping blocks, and the current and the voltage are connected into the cable through the metal measuring rod, so that the detection equipment can be effectively and reliably connected with the cable, the direct current resistance detection function of the whole-axis (long-distance) distribution network cable is realized, the direct resistance detection efficiency of the whole-axis cable is effectively improved, and the inconvenience and the waste brought by the treatment of the cable end are avoided.
2. The clamp is mainly made of metal materials, and the mechanical property of the clamp is effectively ensured.
3. The invention has the advantages of reasonable design, simple structure, easy manufacture, low cost, small volume, simple and convenient installation and easy operation, is particularly suitable for the direct resistance test of the whole-axis (long-distance) cable, and can also be popularized to other similar test occasions of a power system.
Drawings
FIG. 1 is a block diagram of the present invention;
1-a T-shaped nut; 2-V-shaped clamping blocks; 3-a metal measuring bar; 4-a hard insulating layer; 5-U-shaped seat; 6-a handle; 7-cable.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a anchor clamps for distribution network cable direct current resistance detects, as shown in figure 1, includes T-shaped nut 1, V type clamp splice 2, metal measuring rod 3, U type seat 5 and handle 6, T-shaped nut 1, V type clamp splice 2, U type seat 5 all adopt metal material to make, are equipped with stereoplasm insulating layer 4 outside metal measuring rod 3, handle 6 surface is stereoplasm insulating material. The two T-shaped nuts 1 are respectively arranged in two through holes formed in two end portions of the U-shaped seat 5, the heads of the two T-shaped nuts 1 are respectively arranged together with the V-shaped clamping blocks 2, and the two V-shaped clamping blocks 2 are used for clamping the cable 7. Handle 6 is installed at 5 lateral parts central authorities of U type seat and one end and metal measuring rod 3 and is installed together, and handle 6 is inside to be the metal material and to be linked together with metal measuring rod 3, and the handle 6 other end is equipped with two jacks, and wherein the upside jack is used for connecting current test to connect for current interface (red), and the downside jack is used for connecting voltage test to connect for voltage interface (black).
The use mode of the invention is as follows: aligning a metal measuring rod 3 to be in contact with a metal wire core of the cable, screwing T-shaped nuts 1 on two sides of the end part, and fixing the clamp to one end of a cable 7 with a complete structure through a V-shaped clamping block 2; in the same method, another clamp is fixed at the other end of the cable 7, a current test wire joint is connected to an upper side jack of the handle 6, a voltage test wire joint is connected to a lower side jack of the handle 6, and then the current test wire and the voltage test wire are connected to corresponding detection equipment, so that the direct current resistance detection function of the entire distribution network cable is realized.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (3)
1. The utility model provides a anchor clamps for distribution network cable direct current resistance detects which characterized in that: including T shape nut, V type clamp splice, metal measuring bar, U type seat and handle, T shape nut is two and the symmetry is installed at U type seat both ends, and the head of two T shape nuts is in the same place with the V type clamp splice installation that is used for pressing from both sides tight cable respectively, the handle is installed at U type seat lateral part central authorities and one end and is in the same place with the metal measuring bar installation, and this handle is inside to be the metal material and is linked together with the metal measuring bar, and this handle other end is equipped with two jacks that are used for connecting current joint and voltage test to connect.
2. The clamp for detecting the direct current resistance of the distribution network cable according to claim 1, wherein: the outer side of the metal measuring rod is provided with a hard insulating layer, and the surface of the handle is made of hard insulating materials.
3. The clamp for detecting the direct current resistance of the distribution network cable according to claim 1, wherein: the T-shaped nut, the V-shaped clamping block and the U-shaped seat are all made of metal materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110914.9A CN111239443A (en) | 2020-02-24 | 2020-02-24 | Clamp for detecting direct current resistance of distribution network cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110914.9A CN111239443A (en) | 2020-02-24 | 2020-02-24 | Clamp for detecting direct current resistance of distribution network cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111239443A true CN111239443A (en) | 2020-06-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010110914.9A Pending CN111239443A (en) | 2020-02-24 | 2020-02-24 | Clamp for detecting direct current resistance of distribution network cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111239443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066855A (en) * | 2020-10-20 | 2020-12-11 | 国网山东省电力公司潍坊供电公司 | Right-angle cable bending radius measuring tool |
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| CN101634671A (en) * | 2009-09-03 | 2010-01-27 | 河南省电力公司信阳供电公司 | Eight-terminal voltammetry measuring method of direct current resistance |
| CN201576053U (en) * | 2009-10-30 | 2010-09-08 | 浙江万马电缆股份有限公司 | DC resistance online detecting device of cable conductor |
| CN102156215A (en) * | 2011-03-24 | 2011-08-17 | 深圳市瑞雷特电子技术有限公司 | Closed-loop electric test clamp |
| CN102608428A (en) * | 2012-03-16 | 2012-07-25 | 国家电线电缆质量监督检验中心 | Testing device for direct-current (DC) resistance of cable conductor |
| CN103344798A (en) * | 2013-07-04 | 2013-10-09 | 哈尔滨理工大学 | Clamp and method for measuring direct current resistance of twisted wire core of cable |
| CN203479847U (en) * | 2013-09-30 | 2014-03-12 | 国家电网公司 | Wire clamp for testing DC resistance of transformer or loop resistance of circuit breaker |
| CN103777078A (en) * | 2012-10-19 | 2014-05-07 | 远东电缆有限公司 | Cable conductor DC-resistance testing device and testing method |
| CN205679642U (en) * | 2016-06-11 | 2016-11-09 | 重庆渝丰电线电缆有限公司 | A kind of electric wire bridge gripper |
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2020
- 2020-02-24 CN CN202010110914.9A patent/CN111239443A/en active Pending
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| CN101634671A (en) * | 2009-09-03 | 2010-01-27 | 河南省电力公司信阳供电公司 | Eight-terminal voltammetry measuring method of direct current resistance |
| CN201576053U (en) * | 2009-10-30 | 2010-09-08 | 浙江万马电缆股份有限公司 | DC resistance online detecting device of cable conductor |
| CN102156215A (en) * | 2011-03-24 | 2011-08-17 | 深圳市瑞雷特电子技术有限公司 | Closed-loop electric test clamp |
| CN102608428A (en) * | 2012-03-16 | 2012-07-25 | 国家电线电缆质量监督检验中心 | Testing device for direct-current (DC) resistance of cable conductor |
| CN103777078A (en) * | 2012-10-19 | 2014-05-07 | 远东电缆有限公司 | Cable conductor DC-resistance testing device and testing method |
| CN103344798A (en) * | 2013-07-04 | 2013-10-09 | 哈尔滨理工大学 | Clamp and method for measuring direct current resistance of twisted wire core of cable |
| CN203479847U (en) * | 2013-09-30 | 2014-03-12 | 国家电网公司 | Wire clamp for testing DC resistance of transformer or loop resistance of circuit breaker |
| CN205679642U (en) * | 2016-06-11 | 2016-11-09 | 重庆渝丰电线电缆有限公司 | A kind of electric wire bridge gripper |
| CN109298242A (en) * | 2018-11-26 | 2019-02-01 | 广西广缆科技集团有限公司 | A kind of direct current resistance m easurem ent device of cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066855A (en) * | 2020-10-20 | 2020-12-11 | 国网山东省电力公司潍坊供电公司 | Right-angle cable bending radius measuring tool |
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Application publication date: 20200605 |