CN114300287A - Superconductive isolator and corresponding viewing aperture - Google Patents
Superconductive isolator and corresponding viewing aperture Download PDFInfo
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- CN114300287A CN114300287A CN202111651490.8A CN202111651490A CN114300287A CN 114300287 A CN114300287 A CN 114300287A CN 202111651490 A CN202111651490 A CN 202111651490A CN 114300287 A CN114300287 A CN 114300287A
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- light
- isolating switch
- transmitting
- flange
- observation port
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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 provides a superconducting isolating switch and a corresponding observation port.A chamber of the isolating switch of the superconducting isolating switch is provided with the observation port, the observation port comprises an observation port flange plate, and light-transmitting sheets are respectively fixed on two sides of the observation port through step surfaces and are fixed through a sealing ring and a pressing plate; forming a sealed space between the two light-transmitting sheets; simultaneously, adopt a vacuum vent valve with the confined space intercommunication to the air of exhaust confined space can reduce the heat leakage, simultaneously, avoids two printing opacity piece outside condensation frostings. Therefore, the observation port provided by the invention can work in a liquid nitrogen environment, and can realize heat insulation and heat preservation while realizing transparent observation.
Description
Technical Field
The invention relates to the technical field of superconducting equipment, in particular to a superconducting isolating switch and a corresponding observation port.
Background
The superconductor is a conductor with zero resistance characteristic at critical temperature, can reduce the resistance loss during the electric energy transmission, the superconductor can present the superconducting characteristic only by soaking in liquid nitrogen when working at 77k, when the electric energy transmission equipment is constructed by adopting the superconductor, in order to facilitate the maintenance and avoid the shutdown of the whole system caused by the fault of a single component, the connection state of the conductor needs to be controlled by adopting a superconducting isolating switch, and the isolating switch which can realize the switching of the connection state of the superconductor in the liquid nitrogen is adopted, so that the heat leakage loss caused by the superconducting-normal temperature switching link is avoided.
Superconductive isolator is through the regulation to the contact position, the on-off state of control conductor, and the depth of insertion of contact can influence superconductive isolator's current capacity and insulating properties, and when the contact was in the combined floodgate state, if the depth of insertion is not enough, can lead to contact failure, arouses to generate heat, leads to liquid nitrogen gasification, and the system loses superconductive attitude, when the contact was in the separating brake state, if the opening distance of contact is not enough, can lead to insulating distance not enough, and the breakdown discharge can take place for the isolator fracture.
Therefore, an observation port needs to be arranged on the superconducting isolating switch urgently to observe the position and the state of the moving contact, so that the safety of equipment is guaranteed, but when the observation port is arranged, how to ensure that the environment in the superconducting isolating switch is not influenced (namely, the heat insulation and heat preservation are realized) is a technical problem.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a superconducting isolating switch and a corresponding observation port, so that the observation port can work in a liquid nitrogen environment, transparent observation is realized, and heat insulation and heat preservation can be realized.
To solve the above technical problem, an aspect of the present invention provides a viewing port for a superconducting isolator, including at least:
the viewing port flange comprises a disk surface, and an opening is formed in the middle of the viewing port flange; a hollow vertical pipe which is vertical to the disk surface extends downwards outside the opening, a circle of step surface is formed at the joint of the vertical pipe and the disk surface, a circle of upper sealing groove is arranged on the step surface, and a first sealing ring is accommodated in the upper sealing groove; a first light transmitting sheet is arranged on the step surface, and is tightly pressed and fixed in the step surface through a light transmitting sheet pressing plate;
flange mounting holes and light-transmitting piece mounting holes are formed in the disc surface at intervals, and the flange mounting holes and the light-transmitting piece mounting holes are also formed in the positions corresponding to the light-transmitting piece pressing plates; the flange mounting hole is used for being matched with a bolt, and the viewing port flange plate is mounted on an isolating switch cavity of the superconducting isolating switch; the light-transmitting piece mounting holes are used for being matched with light-transmitting piece compression bolts to fix the light-transmitting piece pressing plate on the disc surface;
the other end of the observation port flange plate is further formed with a second step surface, a lower sealing groove is formed in the second step surface, a second sealing ring is arranged in the lower sealing groove, a second light transmitting sheet is arranged on the second step surface, and the second light transmitting sheet is fixed between the second sealing ring and the isolating switch cavity when the observation port flange plate is installed on the isolating switch cavity.
Preferably, a sealed space is formed between the first light-transmitting sheet and the second light-transmitting sheet in the viewing port flange; an air outlet is formed in the side edge of the disc surface and communicated with the first sealed space; a vacuum exhaust valve is arranged on the exhaust port, and the vacuum exhaust valve is in threaded connection with the exhaust port;
and the vacuum exhaust valve is used for pumping out air in a cavity formed by the observation port flange plate, the first light-transmitting sheet and the second light-transmitting sheet.
Preferably, the diameter of the first light transmission piece is larger than that of the second light transmission piece, and the first light transmission piece and the second light transmission plate are both made of light-permeable polycarbonate plates.
Preferably, the diameter of the first sealing ring is larger than that of the second sealing ring, and the first sealing ring and the second sealing ring are both polytetrafluoroethylene O-shaped sealing rings.
Preferably, the viewing port flange plate and the light-transmitting sheet pressing plate are both made of stainless steel materials.
Preferably, the second light-transmitting sheet and the viewing port flange are bonded by using a low-temperature sealant.
As another aspect of the present invention, there is also provided a superconducting isolator switch, including: the device comprises an isolating switch cavity, two ultralow temperature basin-type insulators, an observation port and an isolating switch operating mechanism, wherein the two ultralow temperature basin-type insulators, the observation port and the isolating switch operating mechanism are connected with the isolating switch cavity;
the observation port adopts the observation port.
The embodiment of the invention has the following beneficial effects:
the invention provides a superconducting isolating switch and a corresponding observation port.A chamber of the isolating switch of the superconducting isolating switch is provided with the observation port, the observation port comprises an observation port flange plate, and light-transmitting sheets are respectively fixed on two sides of the observation port through step surfaces and are fixed through a sealing ring and a pressing plate; forming a sealed space between the two light-transmitting sheets; simultaneously, adopt a vacuum vent valve with the confined space intercommunication to the air of exhaust confined space can reduce the heat leakage, simultaneously, avoids two printing opacity piece outside condensation frostings. Therefore, the observation port provided by the invention can work in a liquid nitrogen environment, and can realize heat insulation and heat preservation while realizing transparent observation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an appearance of an embodiment of a superconducting isolating switch provided by the invention;
FIG. 2 is an exploded view of one embodiment of a superconducting isolator switch according to the present invention;
FIG. 3 is a schematic diagram of the superconducting isolating switch of FIG. 1 in an open state;
FIG. 4 is a schematic diagram of a closing state of the superconducting isolating switch in FIG. 1;
FIG. 5 is a schematic view of the external structure of the viewing port device of FIG. 1;
FIG. 6 is an exploded view of the viewport assembly of FIG. 1;
FIG. 7 is a schematic view of the viewing port flange of FIG. 6;
FIG. 8 is another angle schematic of FIG. 7;
fig. 9 is a partial cross-sectional view of fig. 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic diagram illustrating an appearance structure of an embodiment of a superconducting isolating switch according to the present invention; as shown in fig. 2 to 9, in an embodiment of the present invention, the superconducting isolator switch includes: the device comprises an isolating switch cavity 2, two ultralow temperature basin-type insulators 1 connected with the isolating switch cavity 2, an observation port 3 and an isolating switch operating mechanism 4, wherein one end of the isolating switch operating mechanism 4, which is far away from the isolating switch cavity 2, is connected with an insulating terminal box 5, and the isolating switch operating mechanism and the insulating terminal box are fixed in a bolt connection mode; one end of the ultra-low temperature basin-type insulator 1 is connected with the isolating switch cavity 2, and the other end is connected with a metal closed type superconducting transmission line (not shown).
In combination with the exploded view in fig. 2, the superconducting isolator further includes an a-phase moving contact 6, a B-phase moving contact 7, and a C-phase moving contact 8, and the positions of the three moving contacts are controlled by an isolator operating mechanism 4, that is, the three moving contacts can be controlled to move up and down by operating the isolator operating mechanism 4; the left side of the isolating switch cavity is further provided with a phase A left conductor 9, a phase B left conductor 10 and a phase C left conductor 11, the positions of the three left conductors are controlled by the left ultra-low temperature basin-type insulator 1, namely, the three left conductors can be controlled to move horizontally by operating the left ultra-low temperature basin-type insulator; the right side of the isolating switch cavity is further provided with an A-phase right conductor 12, a B-phase right conductor 13 and a C-phase right conductor 14, the positions of the three right conductors are controlled by the right-side ultra-low temperature basin-type insulator 1, namely, the three right conductors can be controlled to move horizontally by operating the right-side ultra-low temperature basin-type insulator; A. b, C the left and right conductors are arranged in regular triangle. And two observation ports 3 are respectively arranged on two sides of the isolating switch cavity to ensure that the visual field covers the three-phase conductor. The observation port 3 is fixed on the isolation switch cavity 2 by 6M 12 bolts.
As shown in fig. 3, which is a schematic diagram of the open state of the superconducting disconnecting switch, it can be understood that the housing of the disconnecting switch cavity 2 is removed in the figure, so as to make the internal connection relationship clear. As can be seen from fig. 3, the A, B, C three-phase movable contact is in contact with the A, B, C three-phase right conductor and is separated from the A, B, C three-phase left conductor, and at this time, the A, B, C three-phase left and right conductors are insulated from each other, and no current can flow. Through the observation port, the position of the three-phase moving contact can be observed, and the three-phase moving contact is ensured to be in a correct opening state.
Fig. 4 is a schematic diagram showing a closing state of the superconducting disconnecting switch. As can be seen from fig. 4, the A, B, C three-phase movable contact is simultaneously in contact with the A, B, C three-phase right conductor and the A, B, C three-phase left conductor, and at this time, the A, B, C three-phase left and right conductors are in a conductive state, and can transmit current. The on-off state switching of the conductors on two sides can be realized by controlling the rising and falling of the moving contact through the isolating switch operating mechanism. Through the observation port, the position of the three-phase moving contact can be observed, and the correct switching-on state of the three-phase moving contact is ensured.
The following describes a specific structure of the view port 3 of the superconducting isolator according to the present invention, with reference to fig. 5 to 9.
Specifically, the observation port 3 further includes:
the observation port flange 30 comprises a disk surface 31, and an opening is formed in the middle of the observation port flange; a hollow vertical pipe 32 which is perpendicular to the disc surface 31 extends downwards outside the opening, a circle of step surface 310 is formed at the joint of the vertical pipe 32 and the disc surface 31, a circle of upper sealing groove 311 is arranged on the step surface 310, and a first sealing ring 32 is accommodated in the upper sealing groove 311; a first light-transmitting sheet 33 is arranged on the step surface 310, and the first light-transmitting sheet 33 is pressed and fixed in the step surface 310 through a light-transmitting sheet pressing plate 34;
the other end of viewing port ring flange 30 is further formed with second step face 36 be provided with down seal groove 37 on the second step face 36 be provided with second sealing washer 38 in the seal groove 37 down, and be provided with second printing opacity piece 39 on the second step face 36 the viewing port ring flange 30 install in when isolator cavity 2 is last, will second printing opacity piece 39 is fixed in second sealing washer 38 with between the isolator cavity 2, furtherly can adopt the low temperature sealed glue to bond between second printing opacity piece 39 and the viewing port ring flange 30.
A sealed space is formed between the first light-transmitting sheet 33 and the second light-transmitting sheet 39 in the viewing port flange 30; an exhaust port 314 is arranged on the side edge of the disk surface 31, and the exhaust port 314 is communicated with the first sealed space; a vacuum exhaust valve 315 is arranged on the exhaust port 314, and the vacuum exhaust valve 315 is in threaded connection with the exhaust port 314; air in a cavity formed by the observation port flange plate 30, the first light transmission sheet 33 and the second light transmission sheet 39 can be pumped out through the vacuum exhaust valve 315, so that heat leakage is reduced, and meanwhile, condensation and frosting outside the two light transmission sheets are avoided.
In a specific example, the diameter of the first light-transmitting sheet 33 is larger than that of the second light-transmitting sheet 39, and the first light-transmitting sheet 33 and the second light-transmitting sheet 39 are made of a light-transmitting polycarbonate plate; the diameter of the first sealing ring 32 is larger than that of the second sealing ring 38, and the first sealing ring 32 and the second sealing ring 38 are both polytetrafluoroethylene O-shaped sealing rings; the viewing port flange 30 and the transparency press plate 34 are both made of stainless steel.
The embodiment of the invention has the following beneficial effects:
the invention provides a superconducting isolating switch and a corresponding observation port.A chamber of the isolating switch of the superconducting isolating switch is provided with the observation port, the observation port comprises an observation port flange plate, and light-transmitting sheets are respectively fixed on two sides of the observation port through step surfaces and are fixed through a sealing ring and a pressing plate; forming a sealed space between the two light-transmitting sheets; simultaneously, adopt a vacuum vent valve with the confined space intercommunication to the air of exhaust confined space can reduce the heat leakage, simultaneously, avoids two printing opacity piece outside condensation frostings. Therefore, the observation port provided by the invention can work in a liquid nitrogen environment, and can realize heat insulation and heat preservation while realizing transparent observation.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A viewport for use in a superconducting isolation switch, comprising at least:
the observation port flange (30) comprises a disk surface (31), and an opening is formed in the middle of the observation port flange; a hollow vertical pipe (32) which is vertical to the disc surface (31) extends downwards outside the opening, a circle of step surface (310) is formed at the joint of the vertical pipe (32) and the disc surface (31), a circle of upper sealing groove (311) is arranged on the step surface (310), and a first sealing ring (32) is accommodated in the upper sealing groove (311); a first light transmitting sheet (33) is arranged on the step surface (310), and the first light transmitting sheet (33) is pressed and fixed in the step surface (310) through a light transmitting sheet pressing plate (34);
flange mounting holes (312) and light-transmitting piece mounting holes (313) are arranged on the disc surface (31) at intervals, and flange mounting holes (342) and light-transmitting piece mounting holes (343) are also arranged at the corresponding positions of the light-transmitting piece pressing plate (34); the flange mounting holes (312 and 342) are used for being matched with bolts, and the observation port flange plate (30) is mounted on an isolating switch cavity (2) of the superconducting isolating switch; the light-transmitting piece mounting holes (313, 343) are used for being matched with light-transmitting piece pressing bolts 35 to fix the light-transmitting piece pressing plate (34) on the disc surface (31);
the other end of observation mouth ring flange (30) is further formed with second step face (36) be provided with down seal groove (37) on second step face (36) be provided with second sealing washer (38) in lower seal groove (37), and be provided with second printing opacity piece (39) on second step face (36) observation mouth ring flange (30) install in when isolator cavity (2) is last, will second printing opacity piece (39) are fixed in second sealing washer (38) with between isolator cavity (2).
2. A viewing port according to claim 1, wherein a sealed space is formed in the viewing port flange (30) between the first light-transmitting sheet (33) and the second light-transmitting sheet (39); an exhaust port (314) is arranged on the side edge of the disc surface (31), and the exhaust port (314) is communicated with the first sealed space; a vacuum exhaust valve (315) is arranged on the exhaust port (314), and the vacuum exhaust valve (315) is in threaded connection with the exhaust port (314);
the vacuum exhaust valve (315) is used for exhausting air in a cavity formed by the observation port flange plate (30), the first light-transmitting sheet (33) and the second light-transmitting sheet (39).
3. A viewing port according to claim 2, wherein the first light-transmitting sheet (33) has a diameter larger than the diameter of the second light-transmitting sheet (39), and the first light-transmitting sheet (33) and the second light-transmitting sheet (39) are made of a light-transmitting polycarbonate sheet.
4. A viewing port according to claim 3, wherein the diameter of the first sealing ring (32) is larger than the diameter of the second sealing ring (38), and the first sealing ring (32) and the second sealing ring (38) are all O-rings of teflon.
5. The viewing port of claim 4, wherein the viewing port flange (30) and the light transmissive sheet retainer (34) are both formed of stainless steel.
6. The viewing port of claim 5, wherein a low temperature sealant is used to bond the second sheet (39) to the viewing port flange (30).
7. A superconducting isolator switch, comprising: the device comprises an isolating switch cavity (2), two ultralow temperature basin-type insulators (1) connected with the isolating switch cavity (2), an observation port (3) and an isolating switch operating mechanism (4), wherein one end, far away from the isolating switch cavity (2), of the isolating switch operating mechanism (4) is connected with an insulating terminal box (5), and the isolating switch operating mechanism and the insulating terminal box are fixed in a bolt connection mode;
the observation port is the observation port according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111651490.8A CN114300287B (en) | 2021-12-30 | 2021-12-30 | Superconducting isolating switch and corresponding observation port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111651490.8A CN114300287B (en) | 2021-12-30 | 2021-12-30 | Superconducting isolating switch and corresponding observation port |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114300287A true CN114300287A (en) | 2022-04-08 |
| CN114300287B CN114300287B (en) | 2023-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111651490.8A Active CN114300287B (en) | 2021-12-30 | 2021-12-30 | Superconducting isolating switch and corresponding observation port |
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| CN (1) | CN114300287B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091444A1 (en) * | 2011-12-23 | 2013-06-27 | 珠海康晋电气有限公司 | Embedded pole capable of isolation and switch cabinet |
| CN104410003A (en) * | 2014-12-05 | 2015-03-11 | 北京合锐赛尔电力科技股份有限公司 | Solid insulated ring network cabinet with light transmission window and visualization window and use method thereof |
| CN205789563U (en) * | 2016-06-02 | 2016-12-07 | 中国南方电网有限责任公司超高压输电公司昆明局 | Gas-insulating and fully-enclosed electrical installation |
-
2021
- 2021-12-30 CN CN202111651490.8A patent/CN114300287B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091444A1 (en) * | 2011-12-23 | 2013-06-27 | 珠海康晋电气有限公司 | Embedded pole capable of isolation and switch cabinet |
| CN104410003A (en) * | 2014-12-05 | 2015-03-11 | 北京合锐赛尔电力科技股份有限公司 | Solid insulated ring network cabinet with light transmission window and visualization window and use method thereof |
| CN205789563U (en) * | 2016-06-02 | 2016-12-07 | 中国南方电网有限责任公司超高压输电公司昆明局 | Gas-insulating and fully-enclosed electrical installation |
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| Publication number | Publication date |
|---|---|
| CN114300287B (en) | 2023-08-15 |
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