CN202771855U - Adjustable and grindable high voltage cable asphalt coating device - Google Patents
Adjustable and grindable high voltage cable asphalt coating device Download PDFInfo
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- CN202771855U CN202771855U CN 201220449574 CN201220449574U CN202771855U CN 202771855 U CN202771855 U CN 202771855U CN 201220449574 CN201220449574 CN 201220449574 CN 201220449574 U CN201220449574 U CN 201220449574U CN 202771855 U CN202771855 U CN 202771855U
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- asphalt
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- voltage cable
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Abstract
The utility model discloses an adjustable and grindable high voltage cable asphalt coating device. The adjustable and grindable high voltage cable asphalt coating device comprises a nozzle (5) used for spraying asphalt and a grinding belt (11) used for grinding a cable surface after asphalt spraying and further comprises a variable frequency motor (1), a frequency converter (2), a PLC controller (3) and a potentiometer (4), wherein the potentiometer (4) provides an analog quantity for flow of the asphalt, a signal of the potentiometer (4) is transmitted to the PLC controller (3) and then to the frequency converter (2) after digital calculation by the PLC controller (3), the frequency converter (2) sets a low speed vector to control motion of the variable frequency motor (1), a rotation speed of the variable frequency motor (1) controls the flow of an asphalt pump, and the nozzle (5) is controlled to spray in proper flow. According to the adjustable and grindable high voltage cable asphalt coating device, electrical automation closed loop is employed to effectively control the flow of the asphalt, so a problem of non-uniform asphalt spraying is solved, and stable coating of the high voltage cable in a production process can be realized.
Description
Technical field
The utility model relates to a kind of high-voltage cable asphalt coating unit, but a kind of adjustable scraped finish type high-voltage cable asphalt coating unit particularly.
Background technology
In 110 kV and above high voltage power cable production process, the anticorrosive coat coating processes of metallic sheath is one important operation.Generally all adopt to enter at the sheath unit to apply asphalt corrosion resistant layer before head is extruded, most domestic high-tension cable manufacturing enterprise all adopts hot type cable pitch at present, such as the disclosed oily heated asphalt coating unit of CN201717061U.Be similar to this mode that no matter adopts heater strip or heating oil of above-mentioned oily heated asphalt coating unit and exist the problem that whole high-tension cable manufacturing enterprise is extremely had a headache always:
1, flow rate of asphalt is wayward: flow rate of asphalt control is the source of whole coating unit, should control the bitumenpump flow and ensure that again whole threaded cable applies fully.Main way is by the change nozzle structure or adopts belt wheel to drive pitch and to eminence formation waterfall cable is smeared at present, and the practice can cause a large amount of pitches to spread upon cable surface and cause great resistance to scraped finish like this.
2, anticorrosive coat is smeared inequality: because the liquid that pitch forms afterwards in heating is thick, and high-voltage cable metal sheath is generally screw-type, in case pitch is sprayed onto in the screw thread on cable metal surface in a large number, according to self-temperature and the ambient temperature impact of metal surface, the pitch in the screw thread can't effectively evenly be smeared.Pitch needs it is scraped totally after being sprayed on cable surface, at present mainly be to rely on rag or the silica gel plate of device for asphalt rear end to scrape, because being sprayed on has certain distance between cable surface and the scraper plate, exist the regular hour poor between pitch spraying and the scraped finish like this, the long time difference can cause the cooling of pitch and the pitch in the cable screw thread can't obtain effective scraped finish, making the cable metal surface smear inhomogeneous or a large amount of pitches rests in the screw thread, will cause rough and inhomogeneous problem by online sheath outside like this, the serious cable jacket that causes is produced again.
The utility model content
But technical problem to be solved in the utility model provides a kind of adjustable scraped finish type high-voltage cable asphalt coating unit, and this coating unit has carried out effective control to flow rate of asphalt, and pitch is smeared evenly at cable surface.
In order to solve above-mentioned technical problem, the technical solution of the utility model is: but a kind of adjustable scraped finish type high-voltage cable asphalt coating unit, comprise the pitchy shower nozzle of spray and the grinding belt of scraping that after the pitch spraying, cable surface is carried out scraped finish, coating unit also comprises variable-frequency motor, frequency converter, PLC controller and potentiometer, described potentiometer is to the given analog quantity of flow of pitch, the signal of potentiometer passes to the PLC controller, pass to frequency converter through the digital operation of PLC controller, frequency converter is set low speed Vector Control Frequency Conversion motor action, the flow of the rotating speed control bitumenpump of variable-frequency motor, thus the control shower nozzle is with suitable flow ejection.
For making the homogenizing of each corner pitch spraying in the cable surface screw thread, the described grinding belt of scraping is the threaded grinding belt of scraping of tool, and it is arranged on the swivel head, and described swivel head can be rotatably set on the rotating base.
For pitch is effectively scraped totally fast in short distance, described shower nozzle is installed on the ejecting device, and described ejecting device is removable, and ejecting device is positioned as close to and scrapes grinding belt like this, can carry out scraped finish to cable fast and effectively after the shower nozzle spraying.
For further improving the effect of spraying, described shower nozzle is two, and it is arranged on the upper and lower of cable.
The utility model adopts the electric automatization closed loop that the flow of pitch is control effectively, solved pitch spraying problem of non-uniform, so that high-tension cable obtains stable coating in process of production, solved the hidden danger of quality problem that high-tension cable exists in process of production, for cable cost control provides solution.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model coating unit front view.
Fig. 2 is the utility model coating unit left view.
Embodiment
Existing high-voltage cable asphalt coating unit directly sprays asphalt delivery by bitumenpump to shower nozzle, its uninterrupted is difficult to control.Such as Fig. 1, shown in 2, the utility model on the basis of existing high-voltage cable asphalt coating unit by adopt the electric automatization closed loop that flow is controlled with lower member: variable-frequency motor 1, frequency converter 2, PLC controller 3, potentiometer 4, shower nozzle 5 and ejecting device 6, flow rate of asphalt control is by potentiometer 4 given analog quantitys, after 3 digital operations of PLC controller, signal is passed to frequency converter 2, setting low speed Vector Control Frequency Conversion motor 1 by frequency converter 2 moves, the rotating speed control pump flow of variable-frequency motor 1, thus pitch sprays with suitable flow through 5 pairs of cables of shower nozzle.In this process, regulate removable ejecting device 6 as much as possible near scraping mill apparatus, pitch is effectively scraped totally fast in short distance (short distance means the short time).
Shower nozzle 5 by ejecting device 6 can cable respectively arrange up and down one, cable is sprayed fully, and can according to the thickness of cable regulate by ejecting device 6 and cable between spacing.
When flow rate of asphalt is excessive, (compare with ideal value), potentiometer 4 records the analog signal of flow and this signal is passed to PLC controller 3, PLC controller 3 according to user program after digital operation is carried out in inside, operation result is exported to frequency converter 2, yes reduces the signal of flow for this result, the signal controlling variable-frequency motor 1 of frequency converter 2 reduces certain rotating speed, thereby has controlled pump discharge, has finally controlled the flow of shower nozzle 5.
When flow rate of asphalt was too small, its control principle was same as described above.
After being sprayed on cable surface, pitch needs it is scraped totally, the utility model adopts machinery rotationization structure to carry out scraped finish, the grinding belt 11 of scraping that the utility model adopts is the threaded grinding belt 11 of scraping of tool, and it is arranged on the swivel head 10, and described swivel head 10 can be rotatably set on the rotating base 9.Described swivel head 10 is by driving motor 7 driven rotary, and the control signal of PLC controller 3 passes to frequency converter, by the rotating speed of Frequency Converter Control driving motor 7.
Swivel head 10 is followed the complete machine linear velocity and is come synchronizing speed, can select according to the thread size of different cables that different to scrape the screw thread that grinding belt 11(is about to scrape on the grinding belt 11 corresponding with the screw thread of cable, to be fit to scraped finish), in the time of in pitch is sprayed on cable surface and screw thread, the direction of rotation of swivel head 10 is consistent with the trend of screw thread, rely on like this screw thread of scraping on the grinding belt 11 in the cable screw thread, to follow rotation, reach the homogenizing of each corner scraped finish of cable surface.
Because asphalt coating device is in molten asphalt process and production process, the phenomenon that exists a large amount of glance coals and pitch to take out of with cable.
The utility model coating unit solves a large amount of glance coal problems by heat shield cover plate 12, activated carbon smoking apparatus.On-the-spot pitch bleeder is by being isolated by three road silicane rubber plates after rotating scraped finish, per one offset plate designed by different sizes, take out of without pitch after ensureing out device for asphalt, design specialized is crossed line running roller 13 in device for asphalt, ensures simultaneously after pitch goes out device for asphalt directly to enter extruder head without wire passing device.
Above-described embodiment limits the utility model never in any form, and every employing is equal to replaces or technical scheme that the mode of equivalent transformation obtains all drops in the protection range of the present utility model.
Claims (4)
1. but adjustable scraped finish type high-voltage cable asphalt coating unit, comprise spray pitchy shower nozzle (5) and after pitch spraying, scrape grinding belt (11) to what cable surface carried out scraped finish, characterized by further comprising variable-frequency motor (1), frequency converter (2), PLC controller (3) and potentiometer (4), described potentiometer (4) is to the given analog quantity of flow of pitch, the signal of potentiometer (4) passes to PLC controller (3), pass to frequency converter (2) through PLC controller (3) digital operation, frequency converter (2) is set low speed Vector Control Frequency Conversion motor (1) action, the flow of the rotating speed control bitumenpump of variable-frequency motor (1), thus control shower nozzle (5) is with suitable flow ejection.
2. but adjustable scraped finish type high-voltage cable asphalt coating unit according to claim 1, it is characterized in that: the described grinding belt (11) of scraping is the threaded grinding belt of scraping of tool, it is arranged on the swivel head (10), and described swivel head (10) can be rotatably set on the rotating base (9).
3. but adjustable scraped finish type high-voltage cable asphalt coating unit according to claim 1 and 2, it is characterized in that: described shower nozzle (5) is installed on the ejecting device (6), and described ejecting device (6) is removable.
4. but adjustable scraped finish type high-voltage cable asphalt coating unit according to claim 3, it is characterized in that: described shower nozzle (5) is two, and it is arranged on the upper and lower of cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449574 CN202771855U (en) | 2012-09-05 | 2012-09-05 | Adjustable and grindable high voltage cable asphalt coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220449574 CN202771855U (en) | 2012-09-05 | 2012-09-05 | Adjustable and grindable high voltage cable asphalt coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771855U true CN202771855U (en) | 2013-03-06 |
Family
ID=47778408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220449574 Withdrawn - After Issue CN202771855U (en) | 2012-09-05 | 2012-09-05 | Adjustable and grindable high voltage cable asphalt coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771855U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820107A (en) * | 2012-09-05 | 2012-12-12 | 江苏亨通高压电缆有限公司 | Adjustable scrapable high-voltage cable pitch coating device |
-
2012
- 2012-09-05 CN CN 201220449574 patent/CN202771855U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820107A (en) * | 2012-09-05 | 2012-12-12 | 江苏亨通高压电缆有限公司 | Adjustable scrapable high-voltage cable pitch coating device |
| CN102820107B (en) * | 2012-09-05 | 2014-06-04 | 江苏亨通高压电缆有限公司 | Adjustable scrapable high-voltage cable pitch coating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20140604 |
|
| RGAV | Abandon patent right to avoid regrant |