CN111220825A - A connect fixing device for power cable test - Google Patents
A connect fixing device for power cable test Download PDFInfo
- Publication number
- CN111220825A CN111220825A CN201911234192.1A CN201911234192A CN111220825A CN 111220825 A CN111220825 A CN 111220825A CN 201911234192 A CN201911234192 A CN 201911234192A CN 111220825 A CN111220825 A CN 111220825A
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- China
- Prior art keywords
- fixing
- cable
- connecting part
- transition
- fixing device
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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
-
- 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
- G01R1/0416—Connectors, terminals
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cable Accessories (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a connecting and fixing device for testing a power cable, which comprises a connecting part, a fixing part and a transition part, wherein the connecting part is arranged on the connecting part; one end of the connecting part is arranged at the measuring end of the signal testing line, and the other end of the connecting part is used for being connected with the conductor part of the tested cable; the fixing part is used for fixing the connecting part with a conductor part of the tested cable; the transition part is used for connection transition between one end of the connecting part and the signal testing line. The combination arrangement of the connecting part, the fixing part and the transition part can greatly improve the convenience and the connection reliability of the power cable test, and has the characteristics of simple structure, low cost, high connection reliability and the like.
Description
Technical Field
The invention relates to the technical field of power measurement, in particular to a connecting and fixing device for power cable testing.
Background
In power cable testing, it is often necessary to apply test signals to the cable under test without distortion. In conventional measurements, a test signal is generally connected to a power cable through a test clip, but in the case of a high-voltage power cable having a large cross-sectional area, the end of a cable conductor forms an end face and is difficult to connect through the test clip.
Meanwhile, for time domain pulse reflection (TDR) measurement with high signal quality requirements, the test signal output is generally transmitted by using a coaxial cable, and if the coaxial cable is simply branched and then connected with a test clamp, the impedance mismatch of the transmission coaxial cable is caused, electric wave reflection is formed, the test signal quality is influenced, the measurement precision is reduced, and even an accurate result cannot be obtained.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a connection fixture for power cable testing that at least partially solves the problem of the inconvenience of applying test signals in the existing power cable testing.
One of the objects of the present invention is achieved by a connection fixing device for power cable testing, comprising a connecting portion, a fixing portion and a transition portion;
one end of the connecting part is arranged at the measuring end of the signal testing line, and the other end of the connecting part is used for being connected with the conductor part of the tested cable;
the fixing part is used for fixing the connecting part with a conductor part of the tested cable;
the transition part is used for connection transition between one end of the connecting part and the signal testing line.
Optionally, the connecting portion is a spring thimble, and one end of the spring thimble is fixed to the measuring end of the signal testing line by welding.
Optionally, the fixing portion includes at least two outer conductors, and under the condition of testing, one end of the fixing portion is fixed to the shielding layer of the tested cable, and the other end of the fixing portion is connected to the shielding layer of the signal testing line.
Optionally, the transition portion includes a crimping ring, and the crimping ring is used for crimping the other end of the fixing portion into the shielding layer of the signal testing line.
Optionally, the diameter of the outer conductor is in a continuously tapered shape.
Optionally, one end of the fixing portion is fixed to the shielding layer of the tested cable through a fastening bolt.
Due to the adoption of the technical scheme, the invention has the following advantages: the combination arrangement of the connecting part, the fixing part and the transition part can greatly improve the convenience and the connection reliability of the power cable test, and has the characteristics of simple structure, low cost, high connection reliability and the like.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The drawings of the invention are illustrated as follows:
fig. 1 is a schematic structural view of the connection fixing device of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
Examples
One of the objects of the present invention is achieved by a connection fixing device for power cable testing, comprising a connecting portion, a fixing portion and a transition portion;
one end of the connecting part is arranged at the measuring end of the signal testing line, and the other end of the connecting part is used for being connected with the conductor part of the tested cable;
the fixing part is used for fixing the connecting part with a conductor part of the tested cable;
the transition part is used for connection transition between one end of the connecting part and the signal testing line.
The tested cable comprises a conductor part 1, an insulating layer 2 and a shielding layer 3, and can be a high-voltage power cable to be tested.
Optionally, the connecting portion is a spring thimble, and one end of the spring thimble is fixed to the measuring end of the signal testing line by welding.
As shown in fig. 1, in the present embodiment, one end of the pogo pin 6 is fixed to the measuring end of the signal test line, i.e., the inner conductor 11 of the signal test line, by welding, and a test signal line welding point 7 is formed after welding.
Optionally, the fixing portion includes at least two outer conductors, and under the condition of testing, one end of the fixing portion is fixed to the shielding layer of the tested cable, and the other end of the fixing portion is connected to the shielding layer of the signal testing line.
Further, as shown in fig. 1, in the present embodiment, the fixing portion includes two outer conductors 5, one end of any one of the outer conductors 5 is fixed to the shielding layer of the tested cable by a fastening bolt 4, and the other end of the outer conductor 5 is connected to the shielding layer of the signal testing line by a transition portion, but the number of the outer conductors of the fixing portion may be 3, 4, and is not limited herein.
Optionally, the transition portion includes a crimping ring, and the crimping ring is used for crimping the other end of the fixing portion into the shielding layer of the signal testing line.
Optionally, the diameter of the outer conductor is in a continuously tapered shape.
Specifically, in this embodiment, as shown in fig. 1, the crimping ring 9 crimps the other end of the fixing portion into the shielding layer of the signal testing line, so as to ensure that the other end of the outer conductor 5 is in sufficient contact with the shielding layer 10 of the signal testing line, and at the same time, the crimping ring 9 can further make the crimping shielding layer 8 in close contact with the other end of the outer conductor 5, thereby achieving a good shielding effect.
Furthermore, the diameter of the outer conductor 5 of the connecting and fixing device is in a continuous gradual change shape, so that the electrical impedance forms continuous transition, and the electrical reflection of the test signal can be eliminated as much as possible.
In conclusion, one end of the connecting and fixing device is fastened outside the tested power cable, and the other end of the connecting and fixing device is in compression joint and welding with the measuring signal input coaxial cable;
the connecting and fixing device can apply a coaxial test signal to the end part of the tested power cable and form continuous transition of the electrical impedance;
the connecting and fixing device is connected with the copper shielding layer of the tested power cable through a fastening bolt and fastened on the periphery of the cable.
The connecting and fixing device is connected with a conductor of the tested power cable through the spring thimble, so that the test signal is effectively transmitted to the cable conductor.
The other end of the connecting and fixing device is in compression joint with the test coaxial cable in a compression joint mode, and a core wire of the test coaxial cable is welded with the other end of the spring thimble.
The diameter of the outer conductor of the connecting and fixing device is in a continuous gradual change shape, so that the electrical impedance forms continuous transition, and the electrical reflection of the test signal is eliminated as much as possible.
By this connection, the test signal can be conveniently applied to the conductor of the high-voltage power cable through the coaxial test line. The invention can greatly improve the convenience and the connection reliability of the power cable test, has the characteristics of simple structure, low cost, high connection reliability and the like, and has good popularization value in engineering implementation.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered thereby.
Claims (6)
1. A connecting and fixing device for testing a power cable is characterized by comprising a connecting part, a fixing part and a transition part;
one end of the connecting part is arranged at the measuring end of the signal testing line, and the other end of the connecting part is used for being connected with the conductor part of the tested cable;
the fixing part is used for fixing the connecting part with a conductor part of the tested cable;
the transition part is used for connection transition between one end of the connecting part and the signal testing line.
2. The connection fixture of claim 1, wherein the connection portion is a pogo pin, and one end of the pogo pin is fixed to the measurement end of the signal test line by welding.
3. The connection fixing device according to claim 1, wherein the fixing portion includes at least two outer conductors, and in a case where a test is performed, one end of the fixing portion is fixed to a shielding layer of a cable to be tested, and the other end of the fixing portion is connected to a shielding layer of the signal test line.
4. The connection fixture of claim 3, wherein the transition portion includes a crimp ring for crimping the other end of the fixture portion into a shield layer of the signal test line.
5. The connection fixture of claim 3, wherein the outer conductor has a continuously tapered shape in diameter.
6. The connection fixing device according to claim 3, wherein one end of the fixing portion is fixed to the shield layer of the cable under test by a fastening bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911234192.1A CN111220825B (en) | 2019-12-05 | 2019-12-05 | A connect fixing device for power cable test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911234192.1A CN111220825B (en) | 2019-12-05 | 2019-12-05 | A connect fixing device for power cable test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111220825A true CN111220825A (en) | 2020-06-02 |
| CN111220825B CN111220825B (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911234192.1A Active CN111220825B (en) | 2019-12-05 | 2019-12-05 | A connect fixing device for power cable test |
Country Status (1)
| Country | Link |
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| CN (1) | CN111220825B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030020592A1 (en) * | 2001-06-14 | 2003-01-30 | Koichi Hirasawa | Current detection resistor, mounting structure thereof and method of measuring effective inductance |
| CN101216514A (en) * | 2008-01-15 | 2008-07-09 | 中兴通讯股份有限公司 | Broad band impedance measurement apparatus |
| CN201789085U (en) * | 2010-07-29 | 2011-04-06 | 江苏通鼎光电股份有限公司 | Adjustable radio-frequency coaxial cable testing connector |
| US20120019267A1 (en) * | 2010-07-21 | 2012-01-26 | Daihen Corporation | High frequency detection device and coaxial cable including the same |
| CN203367549U (en) * | 2013-05-07 | 2013-12-25 | 四川爱通电子线缆制造有限责任公司 | Coaxial cable connector |
| CN204067701U (en) * | 2014-09-05 | 2014-12-31 | 常州易泽科通信科技有限公司 | Cable connector |
| CN204374322U (en) * | 2014-12-16 | 2015-06-03 | 中国人民解放军63973部队 | A kind of open domain type transverse electromagnetic wave transmission cell impedance matching structure |
| CN105891555A (en) * | 2016-05-25 | 2016-08-24 | 中国人民解放军61489部队 | Multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture |
-
2019
- 2019-12-05 CN CN201911234192.1A patent/CN111220825B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030020592A1 (en) * | 2001-06-14 | 2003-01-30 | Koichi Hirasawa | Current detection resistor, mounting structure thereof and method of measuring effective inductance |
| CN101216514A (en) * | 2008-01-15 | 2008-07-09 | 中兴通讯股份有限公司 | Broad band impedance measurement apparatus |
| US20120019267A1 (en) * | 2010-07-21 | 2012-01-26 | Daihen Corporation | High frequency detection device and coaxial cable including the same |
| CN201789085U (en) * | 2010-07-29 | 2011-04-06 | 江苏通鼎光电股份有限公司 | Adjustable radio-frequency coaxial cable testing connector |
| CN203367549U (en) * | 2013-05-07 | 2013-12-25 | 四川爱通电子线缆制造有限责任公司 | Coaxial cable connector |
| CN204067701U (en) * | 2014-09-05 | 2014-12-31 | 常州易泽科通信科技有限公司 | Cable connector |
| CN204374322U (en) * | 2014-12-16 | 2015-06-03 | 中国人民解放军63973部队 | A kind of open domain type transverse electromagnetic wave transmission cell impedance matching structure |
| CN105891555A (en) * | 2016-05-25 | 2016-08-24 | 中国人民解放军61489部队 | Multi-section gradually-changing coaxial type component high-voltage fast pulse response test fixture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111220825B (en) | 2022-10-04 |
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