CN201910263U - Dual-shielded signal cable for high-precision frequency-conversion speed-regulation system - Google Patents
Dual-shielded signal cable for high-precision frequency-conversion speed-regulation system Download PDFInfo
- Publication number
- CN201910263U CN201910263U CN 201120006382 CN201120006382U CN201910263U CN 201910263 U CN201910263 U CN 201910263U CN 201120006382 CN201120006382 CN 201120006382 CN 201120006382 U CN201120006382 U CN 201120006382U CN 201910263 U CN201910263 U CN 201910263U
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- signal cable
- conversion speed
- drainage
- pvc
- high accuracy
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Abstract
The utility model provides a dual-shielded signal cable for a high-precision frequency-conversion speed-regulation system, comprising 5 groups of PVC (polyvinyl chloride) insulating-pair and twist-pair conductors, a drainage bare copper wire, and a shielding layer which wraps outside the drainage bare copper wire; each group of PVC insulating-pair and twist-pair conductors is externally wrapped by an aluminium foil shielding layer; and the 5 groups of PVC (polyvinyl chloride) insulating-pair and twist-pair conductors and the drainage bare copper wire are externally wrapped by a weaving copper net total shielding layer. The dual-shielded signal cable has good shielding performance so that the signal cable for the high-precision frequency-conversion speed-regulation system has stronger anti-interference capability on the high-frequency electromagnetic interference, and the stability and the safety of a frequency-conversion control system can be improved. Especially when being applied to the industries with high transmission control precision, such as fiberglass, carbon fiber and the like, the signal cable has excellent signal transmission precision.
Description
Technical field
The utility model relates to a kind of electric equipment signal cable, especially the high accuracy frequency conversion speed-adjusting system signal cable of industry such as glass fibre, carbon fiber.
Background technology
Many electromagnetic interference are arranged in frequency conversion speed-adjusting system, and these high-frequency electromagnetics disturb and are difficult to eliminate, and have had a strong impact on the signal transmission of frequency conversion speed-adjusting system.Instantly, domestic chemical fibre industry is in the develop rapidly stage, and the transmission speed forward of chemical fibre production is high-speed, the high accuracy direction develops, and is especially in industries such as glass fibre, carbon fibers, very high to the stability and the required precision of drive system.Though the control precision of existing high-performance transducer has reached 0.1%, but limited by the signal transmission quality of common signal shielding cable, the requirement of high-performance transducer be can not reach, thereby the stability and the precision of high accuracy frequency conversion speed-adjusting system had a strong impact on the signal transmission.
Summary of the invention
In order to solve the existing common signal shielding cable deficiency that the signal transmission exists in the high accuracy frequency conversion speed-adjusting system, the utility model provides a kind of high accuracy frequency conversion speed-adjusting system double shield signal cable, interference has stronger antijamming capability to high-frequency electromagnetic, improves the stability and the fail safe of high accuracy frequency-converting speed-governing control system.
The high accuracy frequency conversion speed-adjusting system double shield signal cable that the utility model provides, comprise that PVC insulation twisted pair wire is to conductor, drainage bare copper wire and be coated on its outer screen, described PVC insulation twisted pair wire is surrounded by foil shielding layer outward to conductor, and PVC insulation twisted pair wire is surrounded by total screen outward to conductor and drainage bare copper wire.
Described total screen is the total screen of braiding copper mesh; The braiding copper mesh coverage rate of the total screen of braiding copper mesh is more than or equal to 80%.
Under the preferred situation, described double shield signal cable comprises that 5 groups of PVC insulation twisted pair wires are to conductor and 1 drainage bare copper wire.
Described total screen inboard is provided with polyester belt, and the outside is provided with the PVC outer jacket.
The effect of bucking current ground connection that allows is played in the setting of drainage bare copper wire, thereby has improved shield effectiveness of the present utility model.
The beneficial effects of the utility model are: have good shielding properties, the high accuracy frequency conversion speed-adjusting system is disturbed high-frequency electromagnetic with signal cable stronger antijamming capability, thereby has improved the stability and the fail safe of high accuracy frequency-converting speed-governing control system.Especially at glass fibre, carbon fiber etc. to the exigent industry of drive control precision, have good signal transmission stability and precision.
Description of drawings
Fig. 1 is a double shield signal cable cross sectional representation of the present utility model.
Symbol description: 1. PVC insulation twisted pair wire is to conductor; 2. foil shielding layer; 3. drainage bare copper wire; 4. polyester belt; 5. weave the total screen of copper mesh; 6. PVC outer jacket.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
A kind of high accuracy frequency conversion speed-adjusting system double shield signal cable, comprise that 5 groups of PVC insulation twisted pair wires are to conductor 1 and drainage bare copper wire 3 and be coated on its outer polyester belt 4 and PVC outer jacket 6, every group of PVC insulation twisted pair wire coats the total screen 5 of braiding copper mesh to being surrounded by foil shielding layer 2 outside the conductor 1 between polyester belt 4 and PVC outer jacket 6.
Implementing key of the present utility model is to make screen, to reach good shield effectiveness, satisfies instructions for use.Therefore adopt aluminium foil overlapping wrapped as the screen of PVC insulation twisted pair wire to conductor, adopt coverage rate more than or equal to 80% braiding copper mesh as total screen.
Claims (5)
1. high accuracy frequency conversion speed-adjusting system double shield signal cable, comprise that PVC insulation twisted pair wire is to conductor, drainage bare copper wire and be coated on its outer screen, it is characterized in that: PVC insulation twisted pair wire is surrounded by foil shielding layer outward to conductor, and PVC insulation twisted pair wire is surrounded by total screen outward to conductor and drainage bare copper wire.
2. high accuracy frequency conversion speed-adjusting system double shield signal cable according to claim 1 is characterized in that: described total screen is the total screen of braiding copper mesh.
3. high accuracy frequency conversion speed-adjusting system double shield signal cable according to claim 2 is characterized in that: the braiding copper mesh coverage rate of the total screen of braiding copper mesh is more than or equal to 80%.
4. high accuracy frequency conversion speed-adjusting system double shield signal cable according to claim 1 is characterized in that: described double shield signal cable comprises that 5 groups of PVC insulation twisted pair wires are to conductor and 1 drainage bare copper wire.
5. high accuracy frequency conversion speed-adjusting system double shield signal cable according to claim 1 is characterized in that: described total screen inboard is provided with polyester belt, and the outside is provided with the PVC outer jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120006382 CN201910263U (en) | 2011-01-11 | 2011-01-11 | Dual-shielded signal cable for high-precision frequency-conversion speed-regulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120006382 CN201910263U (en) | 2011-01-11 | 2011-01-11 | Dual-shielded signal cable for high-precision frequency-conversion speed-regulation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201910263U true CN201910263U (en) | 2011-07-27 |
Family
ID=44302463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120006382 Expired - Lifetime CN201910263U (en) | 2011-01-11 | 2011-01-11 | Dual-shielded signal cable for high-precision frequency-conversion speed-regulation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201910263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412011A (en) * | 2011-11-30 | 2012-04-11 | 江苏远洋东泽电缆股份有限公司 | Inner liner extruded marine instrument cable and manufacturing method thereof |
| CN103236297A (en) * | 2012-04-12 | 2013-08-07 | 江苏亨通线缆科技有限公司 | Super-flexible indoor high-speed data cable |
-
2011
- 2011-01-11 CN CN 201120006382 patent/CN201910263U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412011A (en) * | 2011-11-30 | 2012-04-11 | 江苏远洋东泽电缆股份有限公司 | Inner liner extruded marine instrument cable and manufacturing method thereof |
| CN102412011B (en) * | 2011-11-30 | 2013-06-05 | 江苏远洋东泽电缆股份有限公司 | Inner liner extruded marine instrument cable and manufacturing method thereof |
| CN103236297A (en) * | 2012-04-12 | 2013-08-07 | 江苏亨通线缆科技有限公司 | Super-flexible indoor high-speed data cable |
| CN103236297B (en) * | 2012-04-12 | 2016-08-10 | 江苏亨通线缆科技有限公司 | Super-flexible indoor high-speed data 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110727 |