CN201233757Y - Large current coaxial electric cable for signal transmission - Google Patents
Large current coaxial electric cable for signal transmission Download PDFInfo
- Publication number
- CN201233757Y CN201233757Y CNU2008200747081U CN200820074708U CN201233757Y CN 201233757 Y CN201233757 Y CN 201233757Y CN U2008200747081 U CNU2008200747081 U CN U2008200747081U CN 200820074708 U CN200820074708 U CN 200820074708U CN 201233757 Y CN201233757 Y CN 201233757Y
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- coaxial cable
- signal transmission
- electric current
- current coaxial
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Abstract
The utility model discloses a heavy-current coaxial cable used for signal transmission. The heavy-current coaxial cable comprises an external insulation protective layer made of rubber, a multilayered braid layer arranged in the external insulation protective layer and taken as the outer conducting layer, an inner conducting layer arranged in the multilayered braid layer, and an inner insulation protective layer arranged between the multilayered braid layer and the inner conducting layer and made of rubber, wherein one to four layers of the multilayered braid layer are arranged. The heavy-current coaxial cable takes the conducting braid layer as one electrode, and takes the coaxial cable with large cross sectional area as the media for long distance transmission for the heavy-current step signal, so that the current step signal transmission distance and the signal transmission distance are increased, and the quality of signal transmission is improved.
Description
Technical field
The utility model relates to a kind of cable, particularly relates to a kind of long Distance Transmission that realizes the step signal of big electric current, uses and install more convenient and avoid the water route cooling, improve the big electric current coaxial cable that is used for the signal transmission of fail safe.
Background technology
China's utility application number 94241946.4 (to call patent 1 in the following text) and Chinese utility application number 00221488.1 (to call patent 2 in the following text) disclose a kind of big electric current water-cooled coaxial cable respectively.Its structure is to be provided with internal layer copper conductor and outer copper conductor in outer tube, is provided with insulating sleeve between the inside and outside two-layer copper conductor, and this insulating sleeve is separated into two water-cooled zones with coaxial cable.The coaxial cable of 2 pairs of patents 1 of patent has been done further improvement, a kind of new exit structure is provided, end at cable, between anode cable exit and cathode cable exit, also be provided with the extended line of one section cathode cable and insulating sleeve, the gusset piece of cathode cable is arranged on the end of this elongated segment line, and it is more suitable for the self-consuming furnace structure of smelting special steel.More than two schemes leak hidden danger because cooling water channel exists, so bring unsafe factor, also be unfavorable for installing to circuit.
In addition, the current step signal of general coaxial cable only can be exported tens Ampere currents, and transmission range only is several feet.Therefore, the long-distance transmissions of big current step signal is the ten minutes difficult technologies, and in addition, the stray inductance of lead-in wire will cause the serious distortion of transmission signals, thus the certainty of measurement of having a strong impact on.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of long Distance Transmission that realizes the step signal of big electric current, improve certainty of measurement, use and install more convenient and avoid the water route cooling, improve the big electric current coaxial cable that is used for the signal transmission of fail safe.
The purpose of this utility model is achieved through the following technical solutions:
A kind of big electric current coaxial cable that is used for signal transmission comprises: the external insulation protective layer of being made by rubber; Be arranged in the external insulation protective layer, as the multi-layer braided layer of outer conducting layer; The interior insulating protective layer that is arranged on the inner conducting layer in the multi-layer braided layer and is arranged between described multi-layer braided layer and the inner conducting layer, makes by rubber.
Above-mentioned multi-layer braided layer is 1～4 layer, and above-mentioned multi-layer braided layer is formed by the copper wire braiding, and above-mentioned inner conducting layer is a conductive copper wire.
The beneficial effects of the utility model are:
1. adopt the magnetic field cancellation principle, as a conductive electrode, as another conductive electrode, bipolar current equal and opposite in direction, direction are opposite with conductive braid with heart yearn, and offset just in the magnetic field that electric current produces, thereby make stray inductance narrow down to minimum.
2. by multi-layer braided technology, increased the sectional area of conductor.With the coaxial cable of big cross-sectional area medium as the long-distance transmissions of big current step signal, thereby make the step signal of electric current bring up to the hundreds of ampere by only exporting tens Ampere currents originally, transmission range is increased to tens feet from several feet, waveform does not distort, thereby has improved certainty of measurement.
Description of drawings
Fig. 1 is the longitudinal sectional drawing of big electric current coaxial cable of the present utility model;
Fig. 2 is the transverse and longitudinal profile of big electric current coaxial cable of the present utility model;
Fig. 3 is the oscilloscope sectional drawing when using the traditional cable transmission signals;
The oscilloscope sectional drawing of Fig. 4 when using coaxial cable transmission signals of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the structure that is used for the big electric current coaxial cable of signal transmission of the present utility model is described.
As depicted in figs. 1 and 2, the big electric current coaxial cable that is used for signal transmission of the present utility model comprises: the external insulation protective layer of being made by rubber 1; Be arranged in the external insulation protective layer, as the multi-layer braided layer 2 of outer conducting layer; The interior insulating protective layer 3 that is arranged on the inner conducting layer 4 in the multi-layer braided layer and is arranged between described multi-layer braided layer 2 and the inner conducting layer 4, makes by rubber.
According to the size of institute's electric current transmitted signal, described multi-layer braided layer 2 can be 1～4 layer or more multi-layered, is formed by the ground braiding of copper wire one deck cover one deck; Inner conducting layer 4 is a conductive copper wire.
In addition, Fig. 3 and Fig. 4 are respectively the oscilloscope sectional drawing when using traditional cable and coaxial cable transmission signals of the present utility model.As can be seen from the figure, compare with the signal that adopts the traditional cable transmission, the signal that adopts coaxial cable transmission of the present utility model relatively steadily, fluctuation is less, thereby improved signal transmission quality, improved the precision of measuring big current step signal.
Using method to big electric current coaxial cable of the present utility model is as follows below:
Strip off external insulation protective layer 1 separates outer conductive braid 2 to appropriate length with interior insulating protective layer 3, and outer conductive braid 2 is twisted into a branch of, contracts with heat-shrink tube.Like this, insulating protective layer 1, outer conductive braid 2 and interior insulating protective layer 3, inner conducting layer 4 just form two concentric conductors that tightly stick together, and press corresponding external terminal at two ends, and the positive pole and the negative pole that connect power supply respectively get final product.
Claims (3)
1. big electric current coaxial cable that is used for signal transmission is characterized in that comprising: the external insulation protective layer of being made by rubber; Be arranged in the external insulation protective layer, as the multi-layer braided layer of outer conducting layer; The interior insulating protective layer that is arranged on the inner conducting layer in the multi-layer braided layer and is arranged between described multi-layer braided layer and the inner conducting layer, makes by rubber.
2. big electric current coaxial cable according to claim 1 is characterized in that: described multi-layer braided layer is 1～4 layer.
3. big electric current coaxial cable according to claim 1 and 2 is characterized in that: described multi-layer braided layer is formed by the copper wire braiding, and described inner conducting layer is a conductive copper wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200747081U CN201233757Y (en) | 2008-05-09 | 2008-05-09 | Large current coaxial electric cable for signal transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200747081U CN201233757Y (en) | 2008-05-09 | 2008-05-09 | Large current coaxial electric cable for signal transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201233757Y true CN201233757Y (en) | 2009-05-06 |
Family
ID=40620142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200747081U Expired - Lifetime CN201233757Y (en) | 2008-05-09 | 2008-05-09 | Large current coaxial electric cable for signal transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201233757Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489645A (en) * | 2015-12-18 | 2016-04-13 | 国网智能电网研究院 | High-power crimping type IGBT drive wire |
| CN108682493A (en) * | 2018-04-17 | 2018-10-19 | 中国人民解放军海军工程大学 | A kind of repetition high-voltage pulse high current coaxial cable |
-
2008
- 2008-05-09 CN CNU2008200747081U patent/CN201233757Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489645A (en) * | 2015-12-18 | 2016-04-13 | 国网智能电网研究院 | High-power crimping type IGBT drive wire |
| CN105489645B (en) * | 2015-12-18 | 2020-09-04 | 国网智能电网研究院 | High-power crimping formula IGBT drive wire |
| CN108682493A (en) * | 2018-04-17 | 2018-10-19 | 中国人民解放军海军工程大学 | A kind of repetition high-voltage pulse high current coaxial cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090506 |
|
| CX01 | Expiry of patent term |