CN112908553B - Method for improving stability of middle-line in production of electrified conductor of high-temperature superconducting cable - Google Patents
Method for improving stability of middle-line in production of electrified conductor of high-temperature superconducting cable Download PDFInfo
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- CN112908553B CN112908553B CN202110167382.7A CN202110167382A CN112908553B CN 112908553 B CN112908553 B CN 112908553B CN 202110167382 A CN202110167382 A CN 202110167382A CN 112908553 B CN112908553 B CN 112908553B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B12/00—Superconductive or hyperconductive conductors, cables, or transmission lines
- H01B12/02—Superconductive or hyperconductive conductors, cables, or transmission lines characterised by their form
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
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Abstract
The invention discloses a method for improving the stability of a traveling line in the production of a high-temperature superconducting cable electrified conductor, wherein a first sensor for measuring the crawler travel distance of an auxiliary tractor is arranged on the auxiliary tractor, a second sensor for measuring the crawler travel distance of a main tractor is arranged on the main tractor, and the first sensor and the second sensor are in signal connection with a PLC (programmable logic controller); the transmission speed of the main tractor is a fixed value, if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a negative number, the auxiliary tractor is accelerated, and if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a positive number, the auxiliary tractor is decelerated; or the transmission speed of the auxiliary traction is a fixed value, if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a negative number, the speed of the main traction machine is reduced, and if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a positive number, the speed of the main traction machine is increased. The production method provided by the invention can improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of high-temperature superconducting cables, in particular to a method for improving the stability of a traveling wire in the production of a high-temperature superconducting cable electrified conductor.
Background
The zero resistance effect of the superconducting material has the property of lossless current transportation, the application of the superconducting technology can greatly reduce unnecessary energy consumption and improve the energy transmission and conversion efficiency, and the great economic strategic significance of the superconducting material makes the superconducting material become a high and new technology which is mainly put into research and application in national defense, public infrastructure and industrial fields of all countries. Due to the characteristics of zero resistance and high current density, the transmission capacity of a power grid can be enlarged, the transmission loss is reduced, the transmission efficiency is improved, the stability and the reliability of system operation are improved, the power quality is improved, and the environment protection is facilitated. The construction of low-voltage large-capacity power distribution high-temperature superconducting direct-current transmission engineering has technical advancement and economic rationality, and the engineering demonstration is developed at the current stage, so that the method has important significance for promoting the technical development of the superconducting direct-current transmission engineering, reducing the future investment cost and the like.
The superconducting power transmission direct current cable is of a coaxial cable structure and is sequentially provided with a corrugated pipe, a superconducting tape, a semi-conducting tape, a low-temperature cold insulating layer, a semi-conducting tape, a main insulator, a semi-conducting tape, a superconducting tape, a semi-conducting tape, a low-temperature cold insulating layer, a semi-conducting tape, a grounding layer, a fixing layer, a semi-conducting tape, a wrapping protective layer, a low-temperature Dewar pipeline and an outer protective layer from inside to outside along the radial direction of the cable. The production of the body of the superconducting transmission direct current cable does not comprise a low-temperature Dewar pipe and an outer protective layer, and the corrugated pipe has wave crests and wave troughs and has certain elastic contraction, so that after the corrugated pipe is deformed in the axial direction, once the pressure perpendicular to the cable is released by traction routing, the contraction of the corrugated pipe can drive the superconducting tape and the insulating material to be changed from a tight state to a loose state, and the mechanical and electrical properties of the superconducting direct current cable are seriously influenced.
Disclosure of Invention
Based on the above problems, the present invention aims to provide a method for improving the stability of the middle-row line in the production of the electrified conductor of the high-temperature superconducting cable, so as to ensure the stable production of the superconducting direct-current cable.
In order to overcome the defects of the prior art, the technical scheme provided by the invention is as follows:
the production equipment comprises a pay-off device, an auxiliary tractor, a superconducting strip wrapping device, an insulation wrapping device, a main tractor and a take-up device which are sequentially arranged, wherein a first sensor for measuring the crawler travel distance of the auxiliary tractor is arranged on the auxiliary tractor, a second sensor for measuring the crawler travel distance of the main tractor is arranged on the main tractor, and the first sensor and the second sensor are in signal connection with a PLC (programmable logic controller);
the transmission speed of the main tractor is a fixed value, if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a negative number, the auxiliary tractor is accelerated, and if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a positive number, the auxiliary tractor is decelerated;
or the transmission speed of the auxiliary tractor is a fixed value, if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a negative number, the speed of the main tractor is reduced, and if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a positive number, the speed of the main tractor is increased.
In one embodiment, the primary tractor has a greater traction length than the auxiliary tractor.
In one embodiment, the auxiliary tractor has a traction length of 25% to 30% of the main tractor.
In one embodiment, a first meter counter is arranged at the inlet of the superconducting tape lapping device, a second meter counter is arranged at the outlet of the superconducting tape lapping device, and the first meter counter and the second meter counter are in signal connection with the PLC;
if the difference value of the numerical values measured by the first meter counter and the second meter counter is a positive number, the speed of the auxiliary tractor is reduced or the speed of the main tractor is increased; and if the difference value of the numerical values measured by the first meter counter and the second meter counter is a negative number, the auxiliary tractor is accelerated/the main tractor is decelerated.
In one embodiment, a third meter counter is arranged at an inlet of the insulating wrapping device, a fourth meter counter is arranged at an outlet of the insulating wrapping device, and the third meter counter and the fourth meter counter are in signal connection with the PLC;
if the difference value of the numerical values measured by the third meter counter and the fourth meter counter is a positive number, the speed of the auxiliary tractor is reduced or the speed of the main tractor is increased; and if the difference value of the numerical values measured by the third meter counter and the fourth meter counter is negative, the speed of the auxiliary tractor is increased/the speed of the main tractor is reduced.
In one embodiment, a plurality of first cable brackets are arranged between the pay-off device and the auxiliary tractor, and the heights of the first cable brackets are gradually increased from the pay-off device to the auxiliary tractor;
the cable winding device is characterized in that a plurality of second cable brackets are arranged between the main tractor and the winding device, and the heights of the second cable brackets are gradually reduced from the main tractor to the winding device.
In one embodiment, the first cable bracket comprises a lifting support and an auxiliary tug rotatably arranged at the upper end of the lifting support, and the second cable bracket has the same structure as the first cable bracket.
In one embodiment, the lifting support comprises a base, a lower support rod vertically arranged on the base, an upper support rod sleeved in the lower support rod, a support plate arranged at the upper end of the upper support rod, and a positioning pin for fixing the upper support rod in the lower support rod, wherein a group of mounting plates are arranged on the support plate, and the auxiliary tug is arranged between the group of mounting plates.
In one embodiment, a circle of cable limiting groove is formed in the circumferential direction of the auxiliary tug, the cable limiting groove is gradually expanded from inside to outside, and the inner wall of the cable limiting groove is an arc surface.
In one embodiment, the auxiliary tug is made of a polyoxymethylene material.
In one embodiment, the tracks of the auxiliary and main tractors are provided with cable positioning slots.
Compared with the prior art, the invention has the advantages that:
1. by adopting the technical scheme of the invention, a main traction mode and an auxiliary traction mode are adopted, wherein the transmission speed of the main traction or the auxiliary traction is a fixed value, the walking distance of the other traction crawler is measured and compared with the fixed value, and when a difference value occurs, the transmission speed of a tractor of which the transmission speed is not the fixed value is adjusted, so that the corrugated pipe, the belt material and the insulating material can not deform, the stable production of the superconducting direct current cable is ensured, the production efficiency of the superconducting direct current cable is improved, and the quality problem caused by deformation is reduced;
2. the traction length of the main tractor is longer than that of the auxiliary tractor, so that the contact area between a product and the crawler belt can be increased, the longitudinal pressure on the corrugated pipe in the production process is reduced, the large length can obtain enough static friction force as enough traction force, the auxiliary tractor provides a small longitudinal static friction force, and the corrugated pipe is prevented from longitudinally deforming in the advancing process;
3. the meter counter is respectively arranged at the inlet and the outlet of the superconducting tape wrapping device and the insulating wrapping device, so that distance deviation of a product can be avoided in the two processes of the superconducting tape wrapping and the insulating wrapping, deformation of a corrugated pipe or a cable is avoided, and the production quality of the cable is ensured;
4. set up a plurality of first cable tray between pay-off and auxiliary traction machine, set up a plurality of second cable tray between main traction machine and take-up for the cable has the slope transition when getting into auxiliary traction machine, perhaps going out main traction machine, guarantees that the cable is at the in-process level and smooth stability of marcing, and then reduces the deformation of cable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view showing the construction of a production apparatus in the method for improving the stability of a traveling wire in the production of a current-carrying conductor for a high-temperature superconducting cable according to the present invention;
FIG. 2 is a schematic view of a first cable tray according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an auxiliary tug according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of a track in an embodiment of the present invention;
wherein:
1. a pay-off device;
2. an auxiliary tractor;
3. a superconducting tape wrapping device;
4. an insulating wrapping device;
5. a main tractor;
6. a take-up device;
7. a first cable tray; 7-1, a base; 7-2, a lower support rod; 7-3, an upper support rod; 7-4, a support plate; 7-5, mounting a plate; 7-6, an auxiliary tug; 7-6a and a cable limiting groove; 7-7, a guide block; 7-8, a guide rod; 7-9, positioning pins;
8. a second cable tray;
9. a first meter counter;
10. a second meter counter;
11. a third meter counter;
12. a fourth meter counter;
13. a crawler belt; 13-1 and a cable positioning groove.
Detailed Description
The above-described scheme is further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes and are not intended to limit the scope of the present invention. The conditions used in the examples may be further adjusted according to the conditions of the particular manufacturer, and the conditions not specified are generally conditions used in routine experiments.
Referring to fig. 1, which is a schematic structural diagram of the production equipment of the present invention, the production equipment includes a paying-off device 1, an auxiliary traction machine 2, a superconducting tape wrapping device 3, an insulating wrapping device 4, a main traction machine 5, and a take-up device 6, where the paying-off device 1, the auxiliary traction machine 2, the superconducting tape wrapping device 3, the insulating wrapping device 4, the main traction machine 5, and the take-up device 6 are all the prior art, and the present invention is not described in detail.
The improvement of the invention is that a first sensor for measuring the track traveling distance of the auxiliary tractor 2 is arranged on the auxiliary tractor 2, a second sensor for measuring the track traveling distance of the main tractor 5 is arranged on the main tractor 5, the first sensor and the second sensor are in signal connection with a PLC controller, the first sensor and the second sensor are Hall sensors and can be arranged on the crawler wheels, and the traveling distance of the crawler is measured by measuring the number of turns of the crawler wheels.
The transmission speed of the main tractor 5 is a fixed value, that is, the value detected by the second sensor is a fixed value, if the difference between the value detected by the first sensor and the value detected by the second sensor is a negative number, the auxiliary tractor 2 is accelerated, and if the difference between the value detected by the first sensor and the value detected by the second sensor is a positive number, the auxiliary tractor 2 is decelerated. It should be understood that in other embodiments, the transmission speed of the auxiliary tractor 2 may be set to a constant value, and the main tractor 5 may be decelerated if the difference between the value detected by the first sensor and the value detected by the second sensor is negative, and the main tractor 5 may be accelerated if the difference between the value detected by the first sensor and the value detected by the second sensor is positive. Specifically, when the difference between the transmission speeds of the two tractors is within 2%, the transmission speed of the auxiliary tractor 2 or the main tractor 5 is adjusted by the PLC controller.
In this example, the traction length of the main tractor 5 is greater than that of the auxiliary tractor 2, specifically, the traction length of the auxiliary tractor 2 is 25% -30% of that of the main tractor, the traction length of the main tractor 5 is greater than that of the auxiliary tractor 2, so that the contact area between a product and a track can be increased, the longitudinal pressure applied to the corrugated pipe in the production process can be reduced, a large static friction force can be obtained as a sufficient traction force due to a large length, a small longitudinal static friction force is provided by the auxiliary tractor, and the corrugated pipe is prevented from longitudinally deforming in the advancing process. When the line is initially arranged, the corrugated pipe needs certain tension, and the tension value is on the premise of ensuring that the corrugated pipe does not deform.
In order to further optimize the implementation effect of the invention and avoid the distance difference generated in the process of wrapping the superconducting strip, a first meter counter 9 is arranged at the inlet of the superconducting strip wrapping device 3, a second meter counter 10 is arranged at the outlet of the superconducting strip wrapping device 3, the first meter counter 9 and the second meter counter 10 are in signal connection with a PLC (programmable logic controller), and if the difference value of the numerical values measured by the first meter counter 9 and the second meter counter 10 is positive, the auxiliary tractor 2 is decelerated; and if the difference value of the numerical values measured by the first meter counter 9 and the second meter counter 10 is negative, accelerating the auxiliary tractor 2. The meter counter is the prior art, and the invention is not described in detail.
In order to further optimize the implementation effect of the invention and avoid the distance difference generated in the insulating wrapping process, a third meter counter 11 is arranged at the inlet of the insulating wrapping device 4, a fourth meter counter 12 is arranged at the outlet of the insulating wrapping device 4, and the third meter counter 11 and the fourth meter counter 12 are in signal connection with a PLC (programmable logic controller); if the difference value of the numerical values measured by the third meter counter 11 and the fourth meter counter 12 is a positive number, the speed of the auxiliary tractor 2 is reduced; and if the difference value of the numerical values measured by the third meter counter 11 and the fourth meter counter 12 is negative, accelerating the speed of the auxiliary tractor 2.
In this example, a plurality of first cable brackets 7 are provided between the pay-off device 1 and the auxiliary traction machine 2, the height of the plurality of first cable brackets 7 is gradually increased from the pay-off device 1 to the auxiliary traction machine 2, a plurality of second cable brackets 8 are provided between the main traction machine 5 and the take-up device 6, the height of the plurality of second cable brackets 8 is gradually decreased from the main traction machine 5 to the take-up device 6, and a certain gradient transition is provided during the take-up and pay-off process, so that the cable can smoothly and stably travel and the deformation can be reduced.
Referring to fig. 2, the first cable bracket 7 comprises a lifting support and an auxiliary tug 7-6 rotatably arranged at the upper end of the lifting support, the lifting support comprises a base 7-1, a lower support rod 7-2 vertically arranged on the base 7-1, an upper support rod 7-3 sleeved in the lower support rod 7-2, a support plate 7-4 arranged at the upper end of the upper support rod 7-3, and a positioning pin 7-9 for fixing the upper support rod 7-3 in the lower support rod 7-2, a group of mounting plates 7-5 is arranged on the support plate 7-4, and the auxiliary tug 7-6 is arranged between the group of mounting plates 7-5. A guide component is also arranged between the supporting plate 7-4 and the lower supporting rod 7-2 and comprises a guide block 7-7 fixed on the outer wall of the lower supporting rod 7-2 and a guide rod 7-8 arranged in the guide block 7-7 in a penetrating way, and the upper end of the guide rod 7-8 is fixed at the lower end of the supporting plate 7-4. The second cable tray 8 has the same structure as the first cable tray 7.
Specifically, referring to fig. 3, a circle of cable limiting groove 7-6a is arranged on the auxiliary tug 7-6 in the circumferential direction, the cable limiting groove 7-6a is gradually enlarged from inside to outside, the inner wall of the cable limiting groove is an arc surface, and the cable limiting groove is preferably made of polyformaldehyde materials and can play a role in supporting the cable, so that the cable is in smooth transition in the advancing process, the cable is prevented from being deformed by lateral stress in the production process, and the control precision of double traction can be improved.
Referring to fig. 4, the auxiliary tractor 2 and the caterpillar 13 of the main tractor 5 are provided with cable positioning grooves 13-1, which can protect and position the cables.
The above examples are only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (9)
1. The method for improving the stability of the traveling wire in the production of the electrified conductor of the high-temperature superconducting cable comprises the following steps of sequentially arranging a pay-off device, an auxiliary tractor, a superconducting strip wrapping device, an insulation wrapping device, a main tractor and a take-up device, and is characterized in that: the auxiliary tractor is provided with a first sensor for measuring the crawler travel distance of the auxiliary tractor, the main tractor is provided with a second sensor for measuring the crawler travel distance of the main tractor, and the first sensor and the second sensor are in signal connection with the PLC;
the transmission speed of the main tractor is a fixed value, if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a negative number, the auxiliary tractor is accelerated, and if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a positive number, the auxiliary tractor is decelerated;
or the transmission speed of the auxiliary tractor is a fixed value, if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a negative number, the speed of the main tractor is reduced, and if the difference value between the numerical value detected by the first sensor and the numerical value detected by the second sensor is a positive number, the speed of the main tractor is increased;
a first meter counter is arranged at the inlet of the superconducting tape lapping device, a second meter counter is arranged at the outlet of the superconducting tape lapping device, and the first meter counter and the second meter counter are in signal connection with the PLC;
if the difference value of the numerical values measured by the first meter counter and the second meter counter is positive, the speed of the auxiliary tractor is reduced or the speed of the main tractor is increased; and if the difference value of the numerical values measured by the first meter counter and the second meter counter is a negative number, the auxiliary tractor is accelerated/the main tractor is decelerated.
2. A method of improving the stability of a trip wire in the production of a high temperature superconducting cable current carrying conductor as claimed in claim 1, wherein: the traction length of the main tractor is longer than that of the auxiliary tractor.
3. A method of improving the stability of a trip wire in the production of a high temperature superconducting cable current carrying conductor as claimed in claim 2, wherein: the traction length of the auxiliary traction machine is 25% -30% of that of the main traction machine.
4. A method of improving the stability of a trip wire in the production of a high temperature superconducting cable current carrying conductor as claimed in claim 1, wherein: a third meter counter is arranged at the inlet of the insulating wrapping device, a fourth meter counter is arranged at the outlet of the insulating wrapping device, and the third meter counter and the fourth meter counter are in signal connection with the PLC;
if the difference value of the numerical values measured by the third meter counter and the fourth meter counter is a positive number, the speed of the auxiliary tractor is reduced or the speed of the main tractor is increased; and if the difference value of the numerical values measured by the third meter counter and the fourth meter counter is negative, the speed of the auxiliary tractor is increased/the speed of the main tractor is reduced.
5. A method of improving the stability of a trip wire in the production of a high temperature superconducting cable current carrying conductor as claimed in claim 1, wherein: a plurality of first cable brackets are arranged between the pay-off device and the auxiliary tractor, and the heights of the first cable brackets are gradually increased from the pay-off device to the auxiliary tractor;
the cable winding device is characterized in that a plurality of second cable brackets are arranged between the main tractor and the winding device, and the heights of the second cable brackets are gradually reduced from the main tractor to the winding device.
6. The method of claim 5 for improving the stability of a traveling wire in the production of a high temperature superconducting cable current-carrying conductor, wherein: the first cable bracket comprises a lifting support and an auxiliary tug rotatably arranged at the upper end of the lifting support, and the second cable bracket is identical to the first cable bracket in structure.
7. A method of improving the stability of a trip wire in the production of a high temperature superconducting cable current carrying conductor as claimed in claim 6, wherein: the lift support includes base, the vertical lower support bar that sets up on the base, cup joints last bracing piece, setting in the lower support bar are in the backup pad of last bracing piece upper end and incite somebody to action it fixes to go up the bracing piece locating pin in the lower support bar, be equipped with a set of mounting panel in the backup pad, supplementary tow boat is installed between a set of mounting panel.
8. A method of improving the stability of a trip wire in the production of a high temperature superconducting cable current carrying conductor as claimed in claim 6, wherein: the auxiliary tug is circumferentially provided with a circle of cable limiting groove, the cable limiting groove is gradually expanded from inside to outside, and the inner wall of the cable limiting groove is a cambered surface.
9. A method for improving the stability of a traveling wire in the production of a high temperature superconducting cable current-carrying conductor as claimed in claim 1, wherein: and the caterpillar bands of the auxiliary tractor and the main tractor are provided with cable positioning grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110167382.7A CN112908553B (en) | 2021-02-04 | 2021-02-04 | Method for improving stability of middle-line in production of electrified conductor of high-temperature superconducting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110167382.7A CN112908553B (en) | 2021-02-04 | 2021-02-04 | Method for improving stability of middle-line in production of electrified conductor of high-temperature superconducting cable |
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| Publication Number | Publication Date |
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| CN112908553A CN112908553A (en) | 2021-06-04 |
| CN112908553B true CN112908553B (en) | 2022-08-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR1164795A (en) * | 1957-01-17 | 1958-10-14 | Geoffroy Delore | Method and device for molding flexible conductors |
| CN104616832A (en) * | 2015-01-12 | 2015-05-13 | 安徽普瑞斯电工机械有限公司 | Tension constant control system for cable traction |
| CN105632654B (en) * | 2016-01-25 | 2017-05-31 | 长乐致远技术开发有限公司 | cable manufacturing device |
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