CN210867002U - Device and system for laying superconducting cable - Google Patents
Device and system for laying superconducting cable Download PDFInfo
- Publication number
- CN210867002U CN210867002U CN201921460267.3U CN201921460267U CN210867002U CN 210867002 U CN210867002 U CN 210867002U CN 201921460267 U CN201921460267 U CN 201921460267U CN 210867002 U CN210867002 U CN 210867002U
- Authority
- CN
- China
- Prior art keywords
- slide rail
- cable
- electric slide
- base
- laying
- 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.)
- Active
Links
Images
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model provides a device and system for superconducting cable lays. The laying device comprises at least one electric slide rail and a cable clamp matched with the electric slide rail. The electric slide rail comprises a fixed slide rail and a movable slide rail which is in sliding connection with the fixed slide rail, the electric slide rail is electrically connected with the controller, and the electric slide rail is configured to control the movement of the movable slide rail according to the instruction of the controller. The cable clamp comprises a base, the base is connected with the movable sliding rail in a rotating mode, the cable clamp further comprises an cover plate, the cover plate is detachable and connected with the base, and the base and the cover plate are provided with grooves matched with cables to be clamped. The cable clamp further comprises an isolation layer, and the isolation layer is arranged in the base and the groove of the cover plate. The utility model provides a laying device can carry out initiative compensation to superconducting cable, and when avoiding the liquid nitrogen to infuse, superconducting cable shrink produces very big damage to superconducting cable joint and terminal, influences the cable performance.
Description
Technical Field
The embodiment of the utility model provides a relate to electric power technology, especially relate to a device and system for superconducting cable lays.
Background
Compared with the conventional cable, the high-temperature superconducting cable has the remarkable advantages of large carrying capacity, small loss and the like, and is more and more widely applied to a power system. In engineering, the superconducting cable needs to be pulled and laid at room temperature, the joint and the cable terminal are connected, then liquid nitrogen is infused into a superconducting cable heat-insulating pipe, the cable is cooled to the working temperature, namely 77K, and the temperature difference reaches more than 200 ℃. The superconducting cable generates a large expansion force due to the cryogenic cooling, and the contraction rate thereof is generally about 0.3%. Therefore, a cable compensation device is needed.
In the prior art, a sleeve is fixed on a superconducting cable, the sleeve is provided with a foldable connecting arm, one end of the connecting arm is fixedly connected to a support, and abnormal displacement in the cable laying direction during low-temperature shrinkage of the superconducting cable is reduced through the sleeve. However, it is difficult to compensate the deformation amount of the arcuate curve region of the superconducting cable by the sleeve, and it is difficult to reduce the contraction force on the superconducting cable when the superconducting cable contracts at low temperature.
SUMMERY OF THE UTILITY MODEL
The utility model provides a device and system for superconducting cable lays carries out initiative compensation to superconducting cable, when avoiding the liquid nitrogen to infuse, and superconducting cable shrink produces very big damage to superconducting cable joint and terminal, influences the cable performance.
An embodiment of the utility model provides an aspect provides a device for superconducting cable lays, including at least one electronic slide rail, with one electronic slide rail matched with cable clamp. The electric slide rail comprises a fixed slide rail and a movable slide rail which is in sliding connection with the fixed slide rail, the electric slide rail is electrically connected with the controller, and the electric slide rail is configured to control the movable slide rail to move according to an instruction of the controller. The cable clamp comprises a base, the base is rotatably connected with the movable sliding rail, the cable clamp further comprises a cover plate, the cover plate is detachably connected with the base, and grooves matched with cables to be clamped are formed in the base and the cover plate.
The embodiment of the utility model provides an on the other hand provides a system for superconducting cable lays, including at least one electronic slide rail, with one electronic slide rail matched with cable clamp. The electric slide rail comprises a fixed slide rail and a movable slide rail which is in sliding connection with the fixed slide rail, the electric slide rail is electrically connected with the controller, and the electric slide rail is configured to control the movable slide rail to move according to an instruction of the controller. The cable clamp comprises a base, the base is rotatably connected with the movable sliding rail, the cable clamp further comprises a cover plate, the cover plate is detachably connected with the base, and grooves matched with cables to be clamped are formed in the base and the cover plate. Wherein, treat that centre gripping cable inside is equipped with temperature sensor, temperature sensor is connected with the controller electricity, temperature sensor is used for detecting treat the temperature of centre gripping cable core.
Compared with the prior art, the beneficial effects of the utility model reside in that: through the electronic slide rail that can receive control command, make the movable slide rail can move appointed distance, reach the purpose of initiative compensation cable shrink, can offset the in-process that the liquid nitrogen is instilled in, the cable inner core can not destroyed to the powerful effort that adiabatic bellows inlayer produced in the cable. The cable anchor clamps that set up on moving the slide rail can move the slide rail relatively and rotate, and when the cable took place relative movement with the electronic slide rail of slope setting, the cable anchor clamps can be along with the motion of cable and passive rotation for shrink in-process, unusual bending can not appear in the cable of centre gripping point department.
Drawings
FIG. 1 is a schematic diagram of the layout of a cable laying apparatus according to an embodiment;
FIG. 2 is a schematic view of a cable clamp according to an embodiment;
FIG. 3 is a schematic view of a cable structure according to an embodiment;
FIG. 4 is a schematic view of another embodiment of the cabling arrangement;
FIG. 5 is a schematic view of another cable structure according to the embodiment;
FIG. 6 is a schematic diagram of the cable laying system of the embodiment;
FIG. 7 is a schematic diagram of a cable laying method according to an embodiment;
fig. 8 is a schematic diagram of another cable laying method in the embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic diagram of a cable laying device, fig. 2 is a schematic diagram of a cable clamp structure, and referring to fig. 1 and fig. 2, the present embodiment proposes a device for laying a superconducting cable, which includes at least one electric slide rail 1 and a cable clamp 2 matched with the electric slide rail 1. The electric slide rail 1 comprises a fixed slide rail 11 and a movable slide rail 12 connected with the fixed slide rail 11 in a sliding manner. The electric slide rail 1 is electrically connected with a controller, and the electric slide rail 1 is configured to control the movement of the slide rail 12 according to the instruction of the controller. Cable holder 2 includes base 21, and base 21 rotates with movable slide rail 12 to be connected, and cable holder 2 still includes apron 22, and apron 22 detachable is connected with base 21, and base 21 all is equipped with the recess of treating centre gripping cable 3 looks adaptation with apron 22.
Optionally, the main body of the base 21 is a rectangular flat plate structure, a first arc-shaped groove plate is integrally formed above the rectangular flat plate structure, and two sides of the first arc-shaped groove plate extend outwards to form a first extending portion. The cover plate 22 is a second arc-shaped groove plate, two sides of the second arc-shaped groove plate extend outwards to form a second extending portion, bolt holes are formed in the first extending portion and the second extending portion, and the bolt holes are used for being matched with bolts 25 to lock the base 21 and the cover plate 22.
In this embodiment, positioning holes are disposed inside the main body of the base 21 and on the upper surface of the movable slide rail 12, and a connecting shaft 23 is disposed in the positioning holes. The cable clamp 2 is made to be rotatable in the axial direction of the pin relative to the movable slide rail 12 by a connecting shaft 23, such as a pin. With the cable clamp 2 capable of rotating relative to the movable slide rail 12, the electric slide rail 1 can be conveniently arranged at any position of the cable 3 to be clamped, for example, the electric slide rail 1 is arranged at a position perpendicular to the laying direction (for example, the horizontal direction) of the cable 3 to be clamped, or at a position forming a certain angle with the laying direction of the cable 3 to be clamped. When electronic slide rail 1 is certain angle with treating centre gripping cable 3 direction of laying, but rotatable cable clamp 2 makes the radial of base 21 inner groovy and the local axial direction parallel of treating centre gripping cable 3 of centre gripping point position department, when guaranteeing to treat centre gripping cable 3 and put into the recess, the local centre gripping cable 3 of treating can not take place to bend. In the liquid nitrogen infusion process, when the relative position of the cable 3 to be clamped and the electric sliding rail 1 changes, the cable clamp 2 can also rotate passively along with the movement of the cable 3, so that the cable 3 to be clamped at the local part of the clamping point cannot be bent abnormally in the contraction process.
Fig. 3 is a schematic structural diagram of a cable, and referring to fig. 3, the cable 3 to be clamped comprises a three-phase superconducting cable core 31, an inner layer 33 of heat-insulating corrugated pipe, an outer layer 34 of heat-insulating corrugated pipe and a plastic protective layer 35. The region between the inner layer 33 of the heat insulation corrugated pipe and the core 31 of the three-phase superconducting cable is a liquid nitrogen region 32. The region between the insulating bellows inner layer 33 and the insulating bellows outer layer 34 is a vacuum region 36.
In the process of shrinking the cable 3 to be clamped, a control instruction can be sent to the electric sliding rail 1 through the controller at a preset time point, so that the movable sliding rail 12 moves for a certain distance, the purpose of actively compensating the shrinkage of the cable 3 to be clamped is achieved, namely, the liquid nitrogen infusion process is counteracted, the strong acting force of the core of the cable 3 to be clamped on the inner layer 33 of the heat insulation corrugated pipe ensures that the inner layer 33 of the heat insulation corrugated pipe cannot deform, and the vacuum area 36 cannot be damaged.
Optionally, the cable clamp 2 further comprises an isolation layer 26, the isolation layer 26 being arranged in the grooves of the base 21 and the cover plate 22. The insulating layer 26 is used to protect the cable 3 to be clamped, and the material of which the insulating layer 26 is made is preferably neoprene.
Example two
Fig. 4 is a schematic layout diagram of another cable laying device, referring to fig. 4, the present embodiment employs a plurality of electric slide rails to actively compensate for a cable 3 to be clamped, and specifically includes a first electric slide rail 100, a second electric slide rail 101 and a third electric slide rail 102 located at two sides of the first electric slide rail 100, the first electric slide rail 100 is perpendicular to a laying direction of the cable 3 to be clamped, a first angle is formed between the second electric slide rail 101 and the first electric slide rail 100, and a second angle is formed between the third electric slide rail 102 and the first electric slide rail 100. Through treating a plurality of electronic slide rails of bow-shaped curve regional arrangement of centre gripping cable 3, make the atress of treating centre gripping cable 3 more even, when guaranteeing to treat centre gripping cable 3 shrink, according to the orbit motion of ideal, when guaranteeing to treat centre gripping cable 3 shrink, can not treat centre gripping cable 3's joint and terminal equipment and produce very big damage, influence power system's performance. In order to make the cable 3 to be clamped approximately straight after low-temperature shrinkage, a bending area is arranged in the direction perpendicular to the laying direction at the middle position of the cable 3 to be clamped in the initial laying state. The left side and the right side of the bending area are symmetrical, the local cable at the end point of the bending area is close to a straight state in the laying direction, and the bending area is an arch curve area.
In the contraction process of the cable 3 to be clamped, the clamping points except the vertex of the bow-shaped curve area have displacement in the laying direction of the cable 3 to be clamped and the direction perpendicular to the laying direction, so the second electric slide rail 101 and the third electric slide rail 102 are not perpendicular to the laying direction of the cable 3 to be clamped, but form a certain angle v, and the calculation formula of the angle is as follows:
referring to fig. 4, where k is a displacement of a clamping point of the second electric slide rail 101 or the third electric slide rail 102 in the cable 3 laying direction after the clamping point of the arcuate curve region of the cable 3 to be clamped is contracted from the initial state, a value of k may be determined according to laying experience in this embodiment, R is a radius of curvature of the arcuate curve region in the initial state of the cable 3 to be clamped, and c is a vertical distance between the first electric slide rail and a central axis of the cable clamp 2 on the adjacent electric slide rail.
In this embodiment, as a preferable configuration, the second electric slide rail 101 and the third electric slide rail 102 are symmetrically disposed on both sides of the first electric slide rail 100. As an optimal solution, the clamping point of the second electric slide rail 101 or the third electric slide rail 102 is the tangent point of two arcs in the arc-shaped curve area. Determining the displacement b in the laying direction after the end point at one end of the arch curve area is contracted from the initial state, wherein the displacement b in the laying direction after the clamping point is contracted from the initial state is b/2, and the calculation formula of v is as follows:
in order to realize accurate compensation of the process from a normal temperature state to a complete cooling state of the cable 3 to be clamped and ensure balanced stress of the whole bow-shaped curve area, the cable 3 to be clamped is not damaged due to shrinkage force, therefore, a plurality of electric slide rails are arranged in a symmetrical arrangement mode, and more electric slide rails can be arranged symmetrically according to requirements in practical application.
When a plurality of electric sliding rails are arranged, one controller can be used for connecting the plurality of electric sliding rails, and a plurality of controllers can also be used for connecting the electric sliding rails respectively. And respectively sending a control instruction to each electric slide rail through a controller. When the second electric slide rail 101 and the third electric slide rail 102 are symmetrically arranged on two sides of the first electric slide rail 100, the control instructions of the second electric slide rail 101 and the third electric slide rail 102 are the same, so that the control instructions stored in the controller can be reduced, and the electric slide rails can be conveniently controlled.
As an alternative, the first electric slide rail 100, the second electric slide rail 101, and the third electric slide rail 102 may be replaced by common slide rails, the common slide rails are rotatably connected to the cable clamp 2, and at this time, the common slide rails are not electrically connected to the controller, and during the process of shrinking the cable 3 to be clamped, the common slide rails may play a certain passive guiding role, so that the cable 3 to be clamped moves in the arrangement direction of the common slide rails. Under the action of the cable clamp 2, the cable 3 to be clamped can be prevented from rotating.
EXAMPLE III
Fig. 5 is another schematic diagram of the cable structure, and referring to fig. 1, fig. 2 and fig. 5, the system for laying a superconducting cable, the arrangement of the electric rail and the structure of the cable clamp 2 are the same as those described in the first embodiment. The cable 3 to be clamped comprises a three-phase superconducting cable core 31, a heat insulation corrugated pipe inner layer 33, a heat insulation corrugated pipe outer layer 34 and a plastic protective layer 35. The region between the inner layer 33 of the heat insulation corrugated pipe and the core 31 of the three-phase superconducting cable is a liquid nitrogen region 32. The region between the insulating bellows inner layer 33 and the insulating bellows outer layer 34 is a vacuum region 36. And a temperature sensor 4 is arranged inside the cable 3 to be clamped, the temperature sensor 4 is electrically connected with the controller, the temperature sensor 4 is used for detecting the temperature of the liquid nitrogen area 32, and the current temperature of the liquid nitrogen area 32 is used as the temperature of the three-phase superconducting cable core 31.
Fig. 6 is a schematic structural diagram of a cable laying system, referring to fig. 6, the optical fiber temperature sensor 41 is preferably selected as the temperature sensor 4, the optical fiber conduction bundle of the optical fiber temperature sensor 41 is arranged in the liquid nitrogen region 32, the optical fiber temperature sensor 41 is electrically connected with the temperature measurement PLC 42, the temperature measurement PLC 42 is used for converting an optical signal into a temperature signal, the temperature measurement PLC 42 is electrically connected with the upper computer 5 serving as a controller, and the upper computer 5 is used for sending a control instruction to the electric slide rail 1. Optionally, the fiber temperature sensor 41 and the temperature measurement PLC 42 are digital fiber sensors of keyence.
In this embodiment, the controller can receive the temperature in the liquid nitrogen district 32 that temperature sensor 4 sent, and the constructor of being convenient for detects the inside temperature of treating centre gripping cable 3. Since the controller can receive the temperature sent by the temperature sensor 4, an automatic superconducting cable laying system can also be designed, and the controller can calculate control parameters according to the received temperature and automatically control the movement of the electric slide rail.
For example, referring to fig. 4, the formula for calculating the displacement of the movable rail in the first motorized rail 100 according to the temperature includes:
when the displacement of the movable slide rail in the second electric slide rail 101 or the third electric slide rail 102 is calculated, the formula used comprises:
wherein the calculation formula of s comprises:
wherein α has the calculation formula:
in the formula, q is a proportionality coefficient, β is an expansion coefficient of the cable 3 to be clamped, T is an ambient temperature of the cable 3 to be clamped, namely an air temperature, T is a real-time temperature of the wire core, namely a current temperature of the liquid nitrogen region 32, and L1The length of the cable 3 to be clamped is a part between the first clamping point and the first preset point, c is the vertical distance between the clamping point of the second electric slide rail 101 or the third electric slide rail 102 and the first electric slide rail 100, k is the contraction displacement of the clamping point of the second electric slide rail 101 or the third electric slide rail 102 in the laying direction of the cable 3 to be clamped after the cable 3 to be clamped is contracted from the initial state, and R is the curvature radius of the bow-shaped curve area in the initial state of the cable 3 to be clamped. Wherein the first clamping point is a clamping point of a cable clamp on the first electric slide rail 100 in an initial state.
Fig. 7 is a schematic diagram of a cable laying method in an embodiment, referring to fig. 7, when only one first electric slide rail 100 or one group of electric slide rails (one first electric slide rail 100, one second electric slide rail 101, and one third electric slide rail 102) is used, cables 3 to be clamped on two sides of an arc-shaped curve area are laid symmetrically, at this time, a first preset point is a position of an end connector 6 (including an intermediate connector and a terminal connector) of the cables 3 to be clamped, and at this time, q is 1, that is, q is a value
s1＝β(T-t)L1
The formula for k is:
in the formula, L1The length of the cable 3 to be clamped between the first clamping point and the first predetermined point.
Fig. 8 is a schematic diagram of another cable laying method in the embodiment, referring to fig. 8, when a plurality of first electric rails 100 or a plurality of groups of electric rails are used, two adjacent arcuate curve areas are laid to have the same shape, when the first preset point is one of two adjacent first clamping points, and when q is 2, that is, when q is a value
The formula for k is:
in the formula, L1The length of the cable 3 to be clamped between two adjacent first clamping rooms. When the cable laying method shown in fig. 8 is adopted, L can be determined according to actual engineering1The value of (a). For example, if the field conditions are good and the space is sufficient, one first electric slide rail 100 may be arranged every 100 meters, i.e. L1Has a value of 100; if the site conditions are limited, the first electric slide rail 100 can be arranged every 200 meters or even more.
In the application process, only one or more first electric sliding rails 100 can be used for active compensation, and at this time, the value of c is the same as that of c when one or more groups of electric sliding rails are used. In order to realize waiting to centre gripping cable 3 by the accurate compensation of normal atmospheric temperature state to complete cooling state process, ensure bow-shaped curve area whole atress balanced, wait to centre gripping cable 3 not cause the body to damage because of the shrink force, consequently including the electronic slide rail of a plurality of symmetries settings in a set of electronic slide rail, use the number of electronic slide rail in a set of electronic slide rail can be adjusted as required in practical application.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (5)
1. A device for laying superconducting cables is characterized by comprising at least one electric slide rail and a cable clamp matched with the electric slide rail,
the electric slide rail comprises a fixed slide rail and a movable slide rail which is connected with the fixed slide rail in a sliding manner, the electric slide rail is electrically connected with the controller, and the electric slide rail is configured to control the movable slide rail to move according to an instruction of the controller;
the cable clamp comprises a base, the base is rotatably connected with the movable sliding rail, the cable clamp further comprises a cover plate, the cover plate is detachably connected with the base, and grooves matched with cables to be clamped are formed in the base and the cover plate.
2. An apparatus for superconducting cable laying as claimed in claim 1, wherein said cable clamp further includes an isolation layer disposed within recesses of said base and said cover.
3. The superconducting cable laying apparatus as claimed in claim 1, including a first motor slide, a second motor slide and a third motor slide on both sides of the first motor slide, wherein the first motor slide is perpendicular to the laying direction of the cable to be clamped, the second motor slide and the first motor slide are at a first angle, and the third motor slide and the first motor slide are at a second angle.
4. An apparatus for superconducting cable laying as claimed in claim 3, wherein said second and third motor-driven slide rails are symmetrically disposed on both sides of said first motor-driven slide rail.
5. A system for laying a superconducting cable, comprising the apparatus for laying a superconducting cable according to any one of claims 1 to 4, wherein a temperature sensor is provided inside the cable to be clamped, the temperature sensor being electrically connected to a controller, the temperature sensor being configured to detect a temperature of the core of the cable to be clamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460267.3U CN210867002U (en) | 2019-09-02 | 2019-09-02 | Device and system for laying superconducting cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921460267.3U CN210867002U (en) | 2019-09-02 | 2019-09-02 | Device and system for laying superconducting cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210867002U true CN210867002U (en) | 2020-06-26 |
Family
ID=71292149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921460267.3U Active CN210867002U (en) | 2019-09-02 | 2019-09-02 | Device and system for laying superconducting cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210867002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429517A (en) * | 2019-09-02 | 2019-11-08 | 上海电力设计院有限公司 | A kind of apparatus and system for hyperconductive cable laying |
-
2019
- 2019-09-02 CN CN201921460267.3U patent/CN210867002U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429517A (en) * | 2019-09-02 | 2019-11-08 | 上海电力设计院有限公司 | A kind of apparatus and system for hyperconductive cable laying |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7692338B2 (en) | Direct current superconducting power transmission cable and system | |
| CN210867002U (en) | Device and system for laying superconducting cable | |
| EP2127051B1 (en) | A cryogenic cable termination unit | |
| Masuda et al. | Fabrication and installation results for Albany HTS cable | |
| Dai et al. | Testing and demonstration of a 10-kA HTS DC power cable | |
| CN109417281B (en) | Method for constructing an electrical energy transmission path element | |
| US9570214B2 (en) | Superconducting cable line | |
| Hamabe et al. | Status of a 200-meter DC superconducting power transmission cable after cooling cycles | |
| CN110429517A (en) | A kind of apparatus and system for hyperconductive cable laying | |
| JPH08265956A (en) | Terminal of cryogenic cable | |
| CN103094873B (en) | Equipment for length change of the compensation in hyperconductive cable | |
| CN109399385A (en) | A kind of bobbin winder device | |
| CN215815370U (en) | Butt joint device for cable production | |
| Takahashi et al. | Demonstration and verification tests of 500 m long HTS power cable | |
| Zheng et al. | ITER PF6 double pancakes stacking | |
| JP6200344B2 (en) | Superconducting cable laying device | |
| JPH0789690B2 (en) | How to install a cryogenic cable | |
| CN218958399U (en) | Rotary superconducting cable end arc removing device | |
| CN203405020U (en) | Heat collection tube supporting structure | |
| CN215221649U (en) | Supporting device for installing YJV22 type insulated steel tape armored cable | |
| CN217692351U (en) | Rapid cable heating device | |
| CN216471463U (en) | Cable winding equipment for control cable | |
| CN210770536U (en) | Electric actuating mechanism for coking system | |
| Arkell et al. | Design and construction of the 400 kV cable system for the Severn Tunnel | |
| CN217577807U (en) | Indoor cable winding displacement device for hydroelectric installation engineering |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |