CN109599264A - A kind of superconductive current limiter coil pre-tightening apparatus - Google Patents

A kind of superconductive current limiter coil pre-tightening apparatus Download PDF

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Publication number
CN109599264A
CN109599264A CN201811360264.2A CN201811360264A CN109599264A CN 109599264 A CN109599264 A CN 109599264A CN 201811360264 A CN201811360264 A CN 201811360264A CN 109599264 A CN109599264 A CN 109599264A
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CN
China
Prior art keywords
coil
support mechanism
coil support
adjusting rod
current limiter
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Granted
Application number
CN201811360264.2A
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Chinese (zh)
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CN109599264B (en
Inventor
诸嘉慧
韩全
陈盼盼
赵勇青
张会明
张宏杰
丁开忠
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd
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Priority to CN201811360264.2A priority Critical patent/CN109599264B/en
Publication of CN109599264A publication Critical patent/CN109599264A/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06Coil winding
    • H01F41/094Tensioning or braking devices

Abstract

The present invention provides a kind of superconductive current limiter coil pre-tightening apparatus, which includes: coil support mechanism, two fixed mechanisms and regulating mechanism;Wherein, two fixed mechanisms are respectively arranged at the end of coil support mechanism, set coil support mechanism for card;It is equipped with glade plane space between fixed mechanism and coil support mechanism, the position in fixed mechanism is arranged in for regulating winding supporting mechanism;Regulating mechanism is set in coil support mechanism, is slided for driving coil supporting mechanism along glade plane space to apply pretightning force to superconducting coil.The present invention is by being arranged glade plane space between fixed mechanism and coil support mechanism, it is slided with will pass through the adjusting of regulating mechanism with driving coil supporting mechanism along glade plane space, so that coil support mechanism is to the close sliding of superconducting coil to apply pretightning force to superconducting coil, and then ensure that the tensioning of superconducting coil and pre-tight stress meet the requirements, solve the case where superconducting coil is loosened because expanding with heat and contract with cold.

Description

A kind of superconductive current limiter coil pre-tightening apparatus
Technical field
The present invention relates to superconductive current limiter technical fields, in particular to a kind of superconductive current limiter coil pre-tightening apparatus.
Background technique
With the rapid development of the national economy, electricity needs is continuously increased, power grid scale constantly expands, and fault current is prominent Break existing breaker Breaking capacity, the related electric equipment that will seriously jeopardize in system.In order to guarantee the safe and reliable fortune of system Row, it is necessary to quickly cut off fault current.In order to which short circuit current is limited in controllable levels, people propose superconducting current-limiting very early Device concept.But since cryogenic superconductor runs on liquid helium temperature, operating cost is excessively high, cryogenic system is huge, therefore can not be real Now it is commercialized.Discovery with new high temperature superconductor in 1986, high tc superconducting fault current limiter technology are put on the agenda again. In recent ten years, a variety of high-temperature superconductor current limliting model machines are successfully had developed both at home and abroad, wherein there is part to realize linked network test run. But the safety and stability of superconductive current limiter coil is always one of more scabrous problem, especially winding process in practical application In pre-tight stress important supporting role can be played to the mechanical stability of current-limiting inductor, therefore, to assure that applying method securely may be used It leans on.Moreover, superconductive current limiter usually requires to run in liquid nitrogen temperature, it is easy to appear superconductions in system cooling and temperature-rise period The case where coil is loosened because expanding with heat and contract with cold, it will seriously affect the stability of system operation.
Summary of the invention
In consideration of it, the invention proposes a kind of superconductive current limiter coil pre-tightening apparatus, it is intended to solve existing superconductive current limiter The problem of middle superconducting coil is loosened because expanding with heat and contract with cold.
The invention proposes a kind of superconductive current limiter coil pre-tightening apparatus, which includes: Coil support mechanism, two fixed mechanisms and regulating mechanism;Wherein, two fixed mechanisms are respectively arranged at the coil branch The end of support mechanism sets the coil support mechanism for card;It is equipped between the fixed mechanism and the coil support mechanism Glade plane space, the position being arranged in the fixed mechanism for adjusting the coil support mechanism;The regulating mechanism setting In in the coil support mechanism, for driving the coil support mechanism to slide along the glade plane space to apply to superconducting coil Add pretightning force.
Further, above-mentioned superconductive current limiter coil pre-tightening apparatus, the regulating mechanism include: adjusting rod, elasticity preload Part and preload fixing piece;Wherein, the adjusting rod is arranged in the coil support mechanism and the fixed mechanism, and with the line Enclose supporting mechanism bolt;It is described pre-tighten fixing piece be set to the adjusting rod first end and with the adjusting rod bolt, The elasticity preload piece is sheathed on the adjusting rod, also, the elastic preload piece is located in the fixed mechanism and described It pre-tightens between fixing piece, the adjusting elastic preload piece that moves by the preload fixing piece along the adjusting rod is applied to institute The adjusting force pre-tightened on fixing piece is stated, and is transferred in the coil support mechanism by the adjusting rod, to the superconduction Coil applies pretightning force.
Further, finite place piece is arranged in the second end of above-mentioned superconductive current limiter coil pre-tightening apparatus, the adjusting rod, uses It is limited in the adjusting rod.
Further, the end of above-mentioned superconductive current limiter coil pre-tightening apparatus, the adjusting rod is equipped with insulating protective sleeve, It is sheathed on the elastic preload piece and the outside for pre-tightening fixing piece.
Further, above-mentioned superconductive current limiter coil pre-tightening apparatus is provided with scale on the adjusting rod, for showing State the decrement of elastic preload piece.
Further, above-mentioned superconductive current limiter coil pre-tightening apparatus, the elasticity preload piece is spring.
Further, above-mentioned superconductive current limiter coil pre-tightening apparatus, the fixed mechanism include: pedestal and top plate;Wherein, The top plate is set to the end of the coil support mechanism, is used to support the coil support mechanism;The pedestal is set to Between the coil support mechanism and the pedestal, it is provided with supporting groove on the pedestal, for being fastened on the coil branch The end of support mechanism.
Further, above-mentioned superconductive current limiter coil pre-tightening apparatus is provided with fixation hole on the pedestal, for described The adjusting rod of regulating mechanism is oriented to.
Further, above-mentioned superconductive current limiter coil pre-tightening apparatus is provided with card on the side wall of the pedestal and sets groove, uses The elastic preload piece of coil support mechanism described in Yu Kashe.
Further, above-mentioned superconductive current limiter coil pre-tightening apparatus, if the coil support mechanism is provided with along its axial direction The dry arc groove being set side by side, sets the superconducting coil for card.
Superconductive current limiter coil pre-tightening apparatus provided by the invention, by being set between fixed mechanism and coil support mechanism Glade plane space being set, being slided with will pass through the adjusting of regulating mechanism with driving coil supporting mechanism along glade plane space, so that line Enclose supporting mechanism to superconducting coil it is close sliding with to superconducting coil apply pretightning force, and then ensure superconducting coil tensioning and in advance Tight stress meets the requirements, and solves the case where superconducting coil is loosened because expanding with heat and contract with cold.In addition, can be by being pre-adjusted adjusting machine Structure, so that coil support mechanism applies pretightning force to superconducting coil always to the device in use, to work as superconducting coil When relaxing, since pretightning force always exists, it can always compensate for mending coil stress, solve the problems, such as loose, also can compensate for In use process because caused by insulating materials and coil method contraction are inconsistent the problem of coil sag, meanwhile, the device Manufacturing cost is lower, easy for installation.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of superconductive current limiter coil pre-tightening apparatus provided in an embodiment of the present invention;
Fig. 2 is the sectional view of superconductive current limiter coil pre-tightening apparatus provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig. 1 and Fig. 2, it illustrates the preferred knots of superconductive current limiter coil pre-tightening apparatus provided in an embodiment of the present invention Structure.As shown, the coil pre-tightening apparatus includes: 1, two fixed mechanism 2 of coil support mechanism and regulating mechanism 3;Wherein, two A fixed mechanism 2 is respectively arranged at the end of coil support mechanism 1, sets coil support mechanism 1 for card.Specifically, coil branch Support mechanism 1 is set to 4 rebate position of superconducting coil, sets superconducting coil 4 for card, so that superconducting coil 4 is S-type or other shapes Shape arrangement.To ensure that the card of coil support mechanism 1 sets the stability of superconducting coil 4, it is preferable that coil support mechanism 1 is along its axial direction (vertical direction as shown in Figure 2) is provided with several arc grooves 11 being set side by side, and superconducting coil 4 is set for card, to keep away Exempt from falling for superconducting coil 4.Two fixed mechanisms 2 are set to the end of coil support mechanism 1, to realize coil support mechanism 1 Fixation and upper and lower ends balance, and then ensure the stationarity of coil support mechanism 1, avoid the inclination of coil support mechanism 1 Lead to the relaxation of superconducting coil 4.
With continued reference to Fig. 1 and Fig. 2, glade plane space 5 is equipped between fixed mechanism 2 and coil support mechanism 1, for adjusting line Circle supporting mechanism 1 is arranged in the position in fixed mechanism 2.Specifically, the notch for setting coil support mechanism 1 is blocked on fixed mechanism 2 Size is greater than the size of coil support mechanism 1, so as to there is glade plane space 5, between the two to relax in superconducting coil 4 When, by sliding between the two so that coil support mechanism 1 is close to superconducting coil 4, to apply pretightning force to superconducting coil, And then ensure that the tensioning of superconducting coil 4 and pre-tight stress meet the requirements.
With continued reference to Fig. 1 and Fig. 2, regulating mechanism 3 is set in coil support mechanism 1, is used for driving coil supporting mechanism 1 It slides along glade plane space 5 to apply pretightning force to superconducting coil 4.Specifically, the adjusting by operator to regulating mechanism 3, So that it applies a driving force to coil support mechanism 1, so that coil support mechanism 1 is leaned on along glade plane space 5 to superconducting coil 4 Closely.
It will be readily appreciated that the superconductive current limiter coil pre-tightening apparatus provided in the present embodiment, by fixed machine Glade plane space 5 is set between structure 2 and coil support mechanism 1, will pass through the adjusting of regulating mechanism 3 with driving coil supporting mechanism 1 slides along glade plane space 5, so that coil support mechanism 1 is pre- to apply to superconducting coil 4 close to sliding to superconducting coil 4 Clamp force, and then ensure that the tensioning of superconducting coil 4 and pre-tight stress meet the requirements, solve what superconducting coil was loosened because expanding with heat and contract with cold Situation.In addition, can by being pre-adjusted regulating mechanism 3 so that the device in use coil support mechanism 1 always to super Loop 4 applies pretightning force, since pretightning force always exists, to always compensate for mending line when superconducting coil 6 relaxes Stress is enclosed, is solved the problems, such as loose.
With continued reference to Fig. 1 and Fig. 2, fixed mechanism 2 includes: pedestal 21 and top plate 22;Wherein, top plate 22 is set to coil branch The end of support mechanism 1 is used to support coil support mechanism 1.Specifically, top plate 22 is square platy structure, is set to coil branch The top plate 22 of the fixed mechanism 2 of 1 lower end of support mechanism is laid on ground, to ensure the stability of the device, and then ensures its branch The stability of the superconducting coil 4 of support.
With continued reference to Fig. 1 and Fig. 2, pedestal 21 is set between coil support mechanism 3 and pedestal 21, is provided on pedestal 21 Supporting groove 211, for being fastened on the end of coil support mechanism 3.Specifically, pedestal 21 is bolted to 22 phase of top plate For on the side of coil support mechanism 3, pedestal 21 is provided with supporting groove 211 on the side opposite with top plate 22, so as to card It is located at the end of coil support mechanism 3.For the sliding for realizing coil support mechanism 3, it is preferable that supporting groove 211 and coil branch Clearance fit between support mechanism 3, i.e. glade plane space 5 are set between pedestal 21 and coil support mechanism 3.For convenient for regulating mechanism The adjusting of 3 adjusting rod 31, it is preferable that fixation hole 212 is provided on pedestal 21, for being oriented to adjusting rod 31, in turn Ensure the stability adjusted between adjusting rod 31 and coil support mechanism 1.It is provided with card on the side wall of pedestal 21 and sets groove 213, The elastic preload piece 32 of coil support mechanism 3 is set for card, so that the left position of elastic preload piece 32 is fixed, and then passes through line The preload fixing piece 33 of circle supporting mechanism 3 adjusts the right end of elastic preload piece 32 to adjust the adjusting that elastic preload piece 32 applies Power.
With continued reference to Fig. 1 and Fig. 2, regulating mechanism 3 includes: adjusting rod 31, elastic preload piece 32, pre-tightens fixing piece 33 and limit Position part 34;Wherein, adjusting rod 31 is arranged in coil support mechanism 1 and fixed mechanism 2, and with 1 bolt of coil support mechanism.Tool Body, the axially vertical setting of adjusting rod 31 and coil support mechanism 1 is arranged in coil support mechanism 1 and pedestal 21 Fixation hole 212, and be threadedly coupled with coil support mechanism 1, to realize the transmitting relatively moved between the two with power.Wherein, Adjusting rod 31 is screw rod, to be threadedly coupled in coil support mechanism 1 perpendicular to its axial threaded hole 21.
With continued reference to Fig. 1 and Fig. 2, the first end (right end as shown in Figure 2) that fixing piece 33 is set to adjusting rod 31 is pre-tightened And with 31 bolt of adjusting rod, elastic preload piece 32 is sheathed on adjusting rod 31, also, elastic preload piece 32 is located in fixed machine Between structure 2 and preload fixing piece 33, it is applied to by pre-tightening fixing piece 33 along the elastic preload piece 32 of adjusting that moves of adjusting rod 31 The adjusting force on fixing piece 33 is pre-tightened, and is transferred in coil support mechanism 1 by adjusting rod 31, to apply to superconducting coil 4 Pretightning force.Specifically, fixing piece 33 and 31 bolt of adjusting rod are pre-tightened, so that it is along the running lengthwise of adjusting rod 31, and then is made It is mobile to the left side shown in Fig. 2 when it is slided close to coil support mechanism 1, make coil support mechanism 1 and pre-tightens fixing piece 33 Between elastic preload piece 32 compress so that elastic preload piece 32 is applied to the adjusting force to the right pre-tightened on fixing piece 33 Or increase the adjusting force, due to pre-tightening bolt between fixing piece 33 and adjusting rod 31, adjusting rod 31 and coil support mechanism 1 it Between bolt, so that successively adjusting force is transferred in coil support mechanism 1, so that coil support mechanism 1 is by tune to the right Power is saved, and then pretightning force is applied to superconducting coil 4.Wherein, elastic preload piece 32 is spring, can also be become certainly for other section's elasticity The structural member of shape.It is adjusted to be easy to implement the quantization of the device, it is preferable that scale is provided on adjusting rod 31, for showing bullet Property preload piece 32 decrement, so as to the size of adjusting force being subject in objective understanding coil support mechanism 1.To avoid point Position electric discharge, it is preferable that the end of adjusting rod 31 is equipped with insulating protective sleeve 35, is sheathed on elastic preload piece 32 and pre-tightens fixing piece 33 outside, so as to by tip occlusion.
With continued reference to Fig. 1 and Fig. 2, finite place piece 34 is arranged in the second end (left end as shown in Figure 2) of adjusting rod 31, is used for Adjusting rod 31 is limited, is avoided in 31 adjustment process of adjusting rod in the threaded hole of self-retaining hole 212 and coil support mechanism 1 It falls off.It is moved to further realize adjusting rod 31 along the threaded hole of coil supporting mechanism 1, it is preferable that locating part 34 and adjust 31 bolt of bar, to adjust the position of locating part 34.
To sum up, the superconductive current limiter coil pre-tightening apparatus provided in the present embodiment, by fixed mechanism 2 and coil support Glade plane space 5 is set between mechanism 1, will pass through the adjusting of regulating mechanism 3 with driving coil supporting mechanism 1 along glade plane space 5 Sliding so that coil support mechanism 1 is slided to superconducting coil 4 is close to apply pretightning force to superconducting coil 4, and then ensures The tensioning of superconducting coil 4 and pre-tight stress meet the requirements, and solve the case where superconducting coil is loosened because expanding with heat and contract with cold.In addition, can By being pre-adjusted regulating mechanism 3, so that coil support mechanism 1 always applies superconducting coil 4 device in use Pretightning force, since pretightning force always exists, to always compensate for mending coil stress, solve when superconducting coil 6 to relax Loose problem also can compensate in use because coil is loose caused by insulating materials and coil method contraction are inconsistent The problem of relaxation, meanwhile, cost is relatively low for the device manufacturing, easy for installation.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (10)

1. a kind of superconductive current limiter coil pre-tightening apparatus characterized by comprising coil support mechanism, two fixed mechanisms and Regulating mechanism;Wherein,
Two fixed mechanisms are respectively arranged at the end of the coil support mechanism, set the coil support machine for card Structure;
Glade plane space is equipped between the fixed mechanism and the coil support mechanism, for adjusting coil support mechanism card Position in the fixed mechanism;
The regulating mechanism is set in the coil support mechanism, for driving the coil support mechanism between the sliding Gap sliding is to apply pretightning force to superconducting coil.
2. superconductive current limiter coil pre-tightening apparatus according to claim 1, which is characterized in that the regulating mechanism includes: Adjusting rod, elastic preload piece and preload fixing piece;Wherein,
The adjusting rod is arranged in the coil support mechanism and the fixed mechanism, and with the coil support mechanism phase spiral shell It connects;
It is described pre-tighten fixing piece be set to the adjusting rod first end and with the adjusting rod bolt, it is described elasticity preload piece It is sheathed on the adjusting rod, also, the elastic preload piece is located between the fixed mechanism and the preload fixing piece, The adjusting elastic preload piece that moves by the preload fixing piece along the adjusting rod is applied on the preload fixing piece Adjusting force, and be transferred in the coil support mechanism by the adjusting rod, to apply pretightning force to the superconducting coil.
3. superconductive current limiter coil pre-tightening apparatus according to claim 2, which is characterized in that
Finite place piece is arranged in the second end of the adjusting rod, for limiting to the adjusting rod.
4. superconductive current limiter coil pre-tightening apparatus according to claim 2, which is characterized in that
The end of the adjusting rod is equipped with insulating protective sleeve, is sheathed on the elastic preload piece and described pre-tightens the outer of fixing piece Portion.
5. superconductive current limiter coil pre-tightening apparatus according to claim 2, which is characterized in that
It is provided with scale on the adjusting rod, for showing the decrement of the elastic preload piece.
6. superconductive current limiter coil pre-tightening apparatus according to claim 2, which is characterized in that the elasticity preload piece is bullet Spring.
7. superconductive current limiter coil pre-tightening apparatus according to any one of claims 1 to 6, which is characterized in that the fixation Mechanism includes: pedestal and top plate;Wherein,
The top plate is set to the end of the coil support mechanism, is used to support the coil support mechanism;
The pedestal is set between the coil support mechanism and the pedestal, and supporting groove is provided on the pedestal, is used In the end for being fastened on the coil support mechanism.
8. superconductive current limiter coil pre-tightening apparatus according to claim 7, which is characterized in that
It is provided with fixation hole on the pedestal, is oriented to for the adjusting rod to the regulating mechanism.
9. superconductive current limiter coil pre-tightening apparatus according to claim 7, which is characterized in that
Card is provided on the side wall of the pedestal and sets groove, and the elastic preload piece of the coil support mechanism is set for card.
10. superconductive current limiter coil pre-tightening apparatus according to any one of claims 1 to 6, which is characterized in that
The coil support mechanism is provided with several arc grooves being set side by side along its axial direction, sets the superconducting line for card Circle.
CN201811360264.2A 2018-11-15 2018-11-15 Coil pre-tightening device for superconducting current limiter Active CN109599264B (en)

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