CN201247648Y - Dam embankment observation cable for chord type instrument - Google Patents
Dam embankment observation cable for chord type instrument Download PDFInfo
- Publication number
- CN201247648Y CN201247648Y CNU2008201886490U CN200820188649U CN201247648Y CN 201247648 Y CN201247648 Y CN 201247648Y CN U2008201886490 U CNU2008201886490 U CN U2008201886490U CN 200820188649 U CN200820188649 U CN 200820188649U CN 201247648 Y CN201247648 Y CN 201247648Y
- Authority
- CN
- China
- Prior art keywords
- dam
- pairs
- leads
- observation
- cables
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a dam and earth bank observation cable of a corded meter, which comprises two pairs of leads. A polyethylene insulating layer is extruded outside each lead, and the two pairs of leads are matched pairwise and twisted into pairs according to a balanced section principle; an aluminum foil insulating layer is longitudinally coated outside each pair of leads, an earth wire is arranged outside the insulating layer, and a PVC protective sleeve is coated outside the two pairs of leads. The dam and earth bank observation cable of the corded meter can transmit multi-loop signals, can eliminate crosstalk, has corresponding electromagnetic compatibility for eliminating electromagnetic coupling among loops, has favorable environment suitability, instrument connection compatibility and lower cost and can satisfy the transmission requirements of dam and earth bank observation digital signals of the corded meter.
Description
Technical field
The utility model relates to a kind of cable, relates in particular to a kind of electric property that improves cable, enhanced process stability, stable signal transmission, cost is lower, observes the cable that is connected usefulness with string formula instrument to satisfy with the dam embankment.
Background technology
Dam embankment engineering Cables for Dam Observation is a relatively more novel cable series, at cable industry, belongs to rare variety.It is embedded in the inside of dam embankment and is extended to the observation center, and the irregular fluctuation signal that transmission is strong and weak different requires waterproof, water pressure resistance, and anti-soil pressure, anti-tampering, highly sensitive, be convenient to sealing, long service life.Require termite-proof, mouse bite preventing in case of necessity.And the domestic cable that is connected now usefulness with observation instrument is only used common signal controlling cable, and effective attenuation is big, transmission signals is unstable, easy distortion, production efficiency are low.
Summary of the invention
In order to overcome the above-mentioned shortcoming that existing dam embankment observation exists with cable, the utility model provides a kind of string formula instrument dam embankment Cables for Dam Observation, it has can transmit the multiloop signal, and can eliminate and crosstalk, corresponding Electro Magnetic Compatibility, eliminate inductance coupling between the loop, have good environment and make answering property and is connected characteristics such as compatible, that cost is lower with instrument, can satisfy the transmission requirement that string formula instrument is used dam embankment observation data signal.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of string formula instrument dam embankment Cables for Dam Observation, it is characterized in that it comprises two pairs of leads, each lead is extruded with a polyethylene layer outward, two pairs of lead two or two pairings, by balance joint principle, adopt different pitch strands right, every pair of vertical alclad paper tinsel screen of lead outward, screen is outside equipped with a ground wire, and two pairs of leads are coated with one deck pvc sheath.
Foregoing string formula instrument dam embankment Cables for Dam Observation, wherein lead is a tinned wird.
Foregoing string formula instrument is with dam embankment Cables for Dam Observation, wherein the aluminium of foil shielding layer towards outside.
Foregoing string formula instrument dam embankment Cables for Dam Observation, wherein ground wire is a tinned wird.
Foregoing string formula instrument dam embankment Cables for Dam Observation, wherein two pairs of leads are parallel being extruded in the pvc sheath.
The beneficial effects of the utility model are: string formula instrument can be transmitted the multiloop signal with dam embankment Cables for Dam Observation, and can eliminate and crosstalk, corresponding Electro Magnetic Compatibility, eliminate the inductance coupling between the loop, having good environment makes answering property and is connected compatible with instrument, cost is lower, can satisfy the transmission requirement of string formula instrument with dam embankment observation data signal.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a cross section structure schematic diagram of the present utility model.
Embodiment
With reference to Fig. 1, the disclosed a kind of string formula instrument of the utility model comprises two pairs of leads 1 with dam embankment Cables for Dam Observation, wherein the lead 1 preferred tinned wird that adopts.Outside each lead 1, be extruded with a polyethylene layer 2, be coated with two pairs of lead 1 two two pairings of polyethylene layer 2, by balance joint principle, adopt different pitch strands right, vertical alclad paper tinsel screen 3 outside every pair of lead 1, wherein the aluminium of foil shielding layer 3 towards outside, screen 3 is outside equipped with a ground wire 4, ground wire 4 preferred employing tinned wird, two pairs of lead 1 parallel being extruded in one deck pvc sheath 5 then.
Claims (5)
1. a string formula instrument is with dam embankment Cables for Dam Observation, it is characterized in that it comprises two pairs of leads, each lead is extruded with a polyethylene layer outward, two pairs of lead two or two pairings, by balance joint principle, adopt different pitch strands right, every pair of vertical alclad paper tinsel screen of lead outward, screen is outside equipped with a ground wire, and two pairs of leads are coated with one deck pvc sheath.
2. a kind of string formula instrument according to claim 1 is characterized in that with dam embankment Cables for Dam Observation wherein lead is a tinned wird.
3. a kind of string formula instrument according to claim 1 is with dam embankment Cables for Dam Observation, the aluminium that it is characterized in that foil shielding layer wherein towards outside.
4. a kind of string formula instrument according to claim 1 is characterized in that with dam embankment Cables for Dam Observation wherein ground wire is a tinned wird.
5. a kind of string formula instrument according to claim 1 is characterized in that with dam embankment Cables for Dam Observation wherein two pairs of leads are parallel being extruded in the pvc sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201886490U CN201247648Y (en) | 2008-08-15 | 2008-08-15 | Dam embankment observation cable for chord type instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201886490U CN201247648Y (en) | 2008-08-15 | 2008-08-15 | Dam embankment observation cable for chord type instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247648Y true CN201247648Y (en) | 2009-05-27 |
Family
ID=40731473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201886490U Expired - Lifetime CN201247648Y (en) | 2008-08-15 | 2008-08-15 | Dam embankment observation cable for chord type instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201247648Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610304A (en) * | 2011-01-24 | 2012-07-25 | 日立电线株式会社 | Differential signal transmission cable |
| CN106710679A (en) * | 2017-01-16 | 2017-05-24 | 东莞金信诺电子有限公司 | Longitudinally-wrapped small-size packaging interface line |
-
2008
- 2008-08-15 CN CNU2008201886490U patent/CN201247648Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610304A (en) * | 2011-01-24 | 2012-07-25 | 日立电线株式会社 | Differential signal transmission cable |
| CN102610304B (en) * | 2011-01-24 | 2016-01-13 | 日立金属株式会社 | Differential signal transmission cable |
| US9484127B2 (en) | 2011-01-24 | 2016-11-01 | Hitachi Metals, Ltd. | Differential signal transmission cable |
| CN106710679A (en) * | 2017-01-16 | 2017-05-24 | 东莞金信诺电子有限公司 | Longitudinally-wrapped small-size packaging interface line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG RIFENG ELECTRIC CABLE CO., LTD. Free format text: FORMER OWNER: ZHONGSHAN RIFENG CABLE MANUFACTURE CO., LTD. Effective date: 20110118 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110118 Address after: 528400 Guangfeng Industrial Park, West District, Guangdong, Zhongshan Patentee after: Guangdong Rifeng Electric Cable Co., Ltd. Address before: 528400 Guangfeng Industrial Park, West District, Guangdong, Zhongshan Patentee before: Zhongshan Rifeng Cable Manufacture Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090527 |