CN113130191B - Breakdown preventing device and reactor thereof - Google Patents
Breakdown preventing device and reactor thereof Download PDFInfo
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- CN113130191B CN113130191B CN201911404928.5A CN201911404928A CN113130191B CN 113130191 B CN113130191 B CN 113130191B CN 201911404928 A CN201911404928 A CN 201911404928A CN 113130191 B CN113130191 B CN 113130191B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/022—Encapsulation
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- Power Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The embodiment of the invention discloses a breakdown preventing device and a reactor thereof, wherein the breakdown preventing device comprises a breakdown preventing cover and a contact connecting piece, the breakdown preventing cover is a conductor with an inner cavity, one end of the breakdown preventing cover is open so as to enable the inner cavity to be communicated with the outside of the breakdown preventing cover, the outline of the breakdown preventing cover is a smooth curved surface, the contact connecting piece is a conductor, and the first end of the contact connecting piece is connected and communicated with the breakdown preventing cover. Because the outer contour of the anti-breakdown cover is a smooth curved surface, the contact connecting piece is communicated with the clamping shaft, so that the effect of a uniform electric field is achieved, the discharge and breakdown phenomena at the tip end of the clamping shaft are avoided, and the technical problem that the clamping shaft is easy to discharge and breakdown in the prior art is solved.
Description
Technical Field
The invention relates to the field of design of power transformers, in particular to an anti-breakdown device of a power transformer and a reactor thereof.
Background
At present, a reactor in a power transformer with a reactor is often arranged near a main coil, the reactor is designed with a clamping shaft with a tip structure, and the clamping shaft needs to be matched with other components for installation, so that smooth transition cannot be performed structurally. For example, the tip of the clamping shaft is rounded, and the like, so that the electric field of the tip part is extremely uneven, and the discharge and breakdown are extremely easy to cause when the tip is in the electric field, thereby causing great potential safety hazard.
In the prior art, the problems of discharging, breakdown and the like of the tip of the clamping shaft are avoided by keeping a safe distance between the clamping shaft of the reactor and the main coil and other electrical components, and the space volume for laying out the resistor is correspondingly increased, so that the cost is increased.
In addition, those skilled in the art have been working to find a solution to the technical problem of potential safety hazards due to the occurrence of discharge and breakdown phenomena at the tip of the clamping shaft in the reactor.
Disclosure of Invention
In view of the above, the present invention provides a breakdown preventing device for a power transformer, which includes a breakdown preventing cover and a contact connecting piece;
the anti-breakdown cover is a conductor with an inner cavity, one end of the anti-breakdown cover is open so that the inner cavity is communicated with the outside of the anti-breakdown cover, and the outer contour of the anti-breakdown cover is a smooth curved surface;
the contact connecting piece is a conductor, and the first end of the contact connecting piece is connected and conducted with the breakdown preventing cover.
The anti-breakdown cover is arranged at the tip end of the clamping shaft in use, and the clamping shaft is inserted into the anti-breakdown cover from the opening. It should be noted that the breakdown preventing cover needs to be made of a conductor and needs to be conducted with the clamping shaft through the contact connection piece, so that the electric potentials of the breakdown preventing cover and the clamping shaft are leveled, and a floating electric potential is prevented from occurring. The technical problem of discharge and breakdown at the tip of the clamping shaft is solved.
In one embodiment, the breakdown preventing device further comprises an insulating layer;
the insulating layer is laid on the inner wall of the internal cavity.
In this embodiment, a laying manner of the insulating layer is provided, the breakdown preventing cover is a conductor, and conduction with the breakdown preventing cover is realized through a contact connector, and in the design of high-voltage system equipment, multi-point conduction is avoided, so that the insulating layer is arranged between the breakdown preventing cover and the breakdown preventing cover to prevent conduction after the breakdown preventing cover contacts with the clamping shaft.
In one embodiment, the second end of the contact connection is annular.
In this embodiment, the second end structure of the contact connector is provided, the second end is used for being connected and conducted with the clamping shaft, and the second end is in an annular structure and is sleeved on the clamping shaft to achieve connection and conduction with the clamping shaft.
In an embodiment, the puncture-proof cover is provided with an air outlet hole so that the internal cavity is communicated with the outside of the puncture-proof cover.
In this embodiment, a specific structure is provided in which the vent hole is provided in the puncture preventing cover, when the puncture preventing cover is covered on the clamping shaft, a relatively airtight space is formed in the inner cavity, and at this time, the medium in the inner cavity is not in a dangerous state, and the vent hole must be provided to enable the medium in the inner cavity to circulate with the outside, so that the vent hole is provided in the puncture preventing cover, so that the air in the inner cavity circulates with the outside.
In one embodiment, the puncture preventing cover comprises a cylinder and a plugging plate;
the cylinder body is a cylinder with the internal cavity and two ends open, and an opening at one end of the cylinder body is used as the opening; and
the blocking plate is used for blocking the other end of the cylinder body, and the joint of the blocking plate and the cylinder body adopts fillet transition.
In this embodiment, a specific structure of the puncture-proof cover is provided, where the puncture-proof cover includes a cylinder and a plugging plate, and the cylinder and the plugging plate adopt rounded transitions, so that the outer contour is a smooth curved surface. The structure of the cylinder body can be better matched with the clamping shaft inserted in the inner cavity.
In an embodiment, the insulating layer is a cylinder with two open ends, the insulating layer is coaxially sleeved in the cylinder, the outer side wall of the insulating layer is attached to the inner side wall of the cylinder, and one end of the insulating layer extends out of the inner cavity through the opening.
In this embodiment, a specific structure of the insulating layer and a matching relationship between the insulating layer and the cylinder are provided. The insulating layer, in addition to its insulating effect, also helps to prevent relative displacement between the puncture shield and the clamping shaft.
In an embodiment, the air outlet hole is disposed on the plugging plate.
The embodiment provides a specific structure of the air outlet hole on the plugging plate.
The application also provides a reactor, which comprises a clamping shaft, a disc spring and the breakdown preventing device;
the disc spring is coaxially sleeved on the clamping shaft; and
the anti-breakdown cover is sleeved outside the clamping shaft and the disc spring, the anti-breakdown cover isolates the clamping shaft from the disc spring through the insulating layer, and the second end of the contact connecting piece is connected and conducted with the clamping shaft or the disc spring.
In this embodiment, a specific structure of a reactor is provided, where the reactor includes the clamping shaft, the disc spring, and the breakdown preventing device, and in this embodiment, an assembly manner of the clamping shaft, the disc spring, and the breakdown preventing device is also disclosed.
In one embodiment, the internal cavity is a cylindrical cavity;
the insulation layer is a cylinder with two open ends, the insulation layer is sleeved in the internal cavity in the anti-breakdown cover, the outer side wall of the insulation layer is attached to the inner side wall of the anti-breakdown cover, and one end of the insulation layer extends out of the internal cavity through the opening;
the inside wall of insulating layer with the lateral wall laminating of dish spring cup joints.
In this embodiment, a specific structure of the insulating layer and the fitting relation of the insulating layer with the breakdown preventing cover and the butterfly spring are provided.
In one embodiment, the reactor further comprises a clamp web and a fastening device;
the clamping shaft is arranged on the clamping piece web plate, one end of the clamping shaft extends out of the clamping piece web plate, and the disc spring is arranged on the clamping piece web plate;
the fastening device is arranged on the clamping shaft, and the disc spring is clamped between the fastening device and the clamping piece web plate;
the second end of the contact connecting piece is annular, is coaxially sleeved on the clamping shaft, and is arranged between the disc spring and the clamping piece web in a pressing mode to achieve conduction between the second end and the disc spring.
In this embodiment, a specific structure of the reactor including the clamp web and the fastening device is provided, and how the second end is connected with the clamping shaft, the butterfly spring, and the clamp web in a mating manner when the second end is annular is provided.
Drawings
The above and other features and advantages of the present invention will become more apparent to those of ordinary skill in the art by describing in detail preferred embodiments thereof with reference to the attached drawings in which:
FIG. 1 is a schematic diagram of a breakdown preventing device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a breakdown preventing device according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a reactor according to an embodiment of the present invention;
fig. 4 is a schematic view of a partially enlarged structure of fig. 3 according to the present invention.
Wherein, the reference numerals are as follows:
Detailed Description
The applicant found that reactors are often used in high voltage system equipment, which comprise a clamping shaft and a butterfly spring, which is ring-shaped and is sleeved outside the clamping shaft, wherein the top of the clamping shaft is still exposed above the butterfly spring, and the top of the butterfly spring is pressed together by a fastening device, which may be a nut, so that the clamping shaft is provided with a thread in threaded engagement with the nut. The thread is understood to mean the tip of the clamping shaft, which is exposed to electrical discharges or breaks down when the clamping shaft is in the energized state.
The thread is required to be reserved because the thread is matched with the nut to press the butterfly spring, but the thread cannot be chamfered to form a smooth curved surface. In the prior art, in order to prevent the phenomena of discharge and breakdown of the screw thread on the clamping shaft, the discharge and breakdown are avoided by keeping a safety distance of 200 mm or more from other electric elements adjacent to the screw thread. The reactors are designed in plural and arranged side by side in the design of the high-voltage system apparatus, and if the reactors in the high-voltage system apparatus are each spaced apart from each other by the safety distance, the occupied space of the high-voltage system apparatus is inevitably increased greatly, and the volume of the supporting member of the reactor is also increased, resulting in an increase in cost.
In some embodiments of the present application, a breakdown preventing device is provided that is externally covered on the clamping shaft of the reactor for preventing the threads on the clamping shaft from being broken through for discharging or breaking through. The breakdown preventing device realizes the breakdown discharging and breakdown preventing phenomena by changing the outer contour of the clamping shaft exposed in the space, and the outer contour is designed into a smooth curved surface and is connected and conducted with the clamping shaft, so that the reactor and other electric elements in the high-voltage system equipment are effectively protected.
In order to make the technical scheme and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description is intended to illustrate the invention and is not intended to limit the scope of the invention.
Fig. 1 is a schematic structural view of an anti-breakdown device according to an embodiment of the present invention, and fig. 2 is a schematic structural view of an anti-breakdown device according to another embodiment of the present invention. As shown in fig. 1 and 2, in one embodiment, the present application provides a breakdown preventing device including a breakdown preventing cap 1 and a contact connecting member 2;
the anti-breakdown cover 1 is a conductor with an inner cavity 11, one end of the anti-breakdown cover 1 is an opening 12 so that the inner cavity 11 is communicated with the outside of the anti-breakdown cover 1, and the outer contour 13 of the anti-breakdown cover 1 is a smooth curved surface;
the contact connection 2 is a conductor and the first end 21 of the contact connection 2 is in electrical communication with the puncture shield 1.
In this embodiment, a specific structure of the breakdown preventing device is provided, the breakdown preventing cover 1 has an inner cavity 11 for covering the clamping shaft, and an outer contour 13 of the breakdown preventing cover 1 is a smooth curved surface, so that the breakdown preventing cover 1 covering the outer side of the clamping shaft can uniformly distribute an electric field, and can effectively prevent the discharge and breakdown phenomena at the tip end on the clamping shaft from breaking down. It is to be noted that the clamping shaft is connected to the puncture-proof housing 1 via the contact connection 2 for conducting, after which the electric field of the clamping shaft in the reactor is guided by the shielding housing 1. In addition, the puncture preventing cover 1 may be preferably made of steel or copper, and the contact connecting member 2 has a strip-shaped structure, and the first end 21 of the contact connecting member 2 is integrally formed with the edge of the opening 12 of the puncture preventing cover 1. The purpose of the contact connection 2 is to level the potential of the puncture preventing cap 1 and the clamping shaft, preventing the occurrence of floating potentials.
In one embodiment, the breakdown preventing device further comprises an insulating layer 3, and the insulating layer 3 is laid on the inner wall of the inner cavity 11.
In the present embodiment a construction of the insulating layer 3 is provided, the insulating layer 3 preferably being laid on the inner wall of the inner cavity 11 using an insulating cardboard, with the aim of preventing the clamping shaft from coming into contact with the puncture-proof housing 1 in high-voltage system equipment, since the puncture-proof housing 1 is already connected to the puncture-proof housing 1 via the contact connection 2, and in high-voltage design, a number of contact points are prevented from coming into contact with the puncture-proof housing 1 again using the insulating layer 3.
In one embodiment, the second end 22 of the contact connector 2 is annular.
In this embodiment a specific configuration of the second end 22 is provided, namely the annular configuration. The ring shape is used to cooperate with the connection of the clamping shaft to realize conduction, and the ring shape of the second end 22 can be sleeved on the clamping shaft to realize conduction with the clamping shaft, and the detailed assembly manner will be described in detail later, and will not be described again here. It should be noted that the ring shape may be formed as a sheet and integrally formed with the other parts of the contact-making member 2, so that it can be directly extruded through a die, and the thickness of the second end 22 should be manually turned over for easy assembly.
In one embodiment, the puncture mask 1 is provided with an air outlet 14 to allow the internal cavity 11 to communicate with the outside of the puncture mask 1.
In this embodiment, a specific implementation of providing the puncture preventing cover 1 with the gas outlet hole 14 is provided. After the puncture preventing cover 1 covers the clamping shaft, the space of the inner cavity 11 is relatively closed, the environment is very dangerous in high-pressure design, and the medium in the inner cavity 11 needs to be discharged to the outside through the air outlet hole 14, so the air outlet hole 14 is arranged on the puncture preventing cover 1 for discharging the medium in the inner cavity 11.
In one embodiment, the puncture cap 1 comprises a barrel 15 and a closure plate 16;
the cylinder 15 is a cylinder with an inner cavity 11 and two ends open, and an opening at one end of the cylinder 15 is used as an opening 12; and
the other end of the cylinder 15 is plugged by the plugging plate 16, and the joint of the plugging plate 16 and the cylinder 15 adopts a round corner 17 for transition.
In this embodiment, a specific structure of the puncture-proof cover 1 is provided, the puncture-proof cover 1 includes a cylinder 15 and a plugging plate 16, the cylinder 15 is a cylinder with two open ends, the plugging plate 16 plugs one end of the cylinder 15, the non-plugged end is an opening 12, the clamping shaft is inserted into the internal cavity 11 from the opening 12, the connection part between the cylinder 15 and the plugging plate 16 adopts a round corner 17 for transition, no tip exists on the surfaces of the side wall of the cylinder 15 and the plugging plate 16, and the outer contour 13 constructed by the round corner 17, so that a smooth curved surface is formed by complete smooth transition. In addition, the cylinder 15, the plugging plate 16, and the contact connector 2 may be made of the same material and the same thickness, and integrally formed by a mold, wherein the puncture-preventing cover 1 is partially formed into an expanded sheet structure, and then integrally formed by a mold, and then formed into a three-dimensional structure having the internal cavity 11, that is, the puncture-preventing cover 1 by bending, pressing, or the like.
In one embodiment, the insulating layer 3 is a cylinder with two open ends, the insulating layer 3 is coaxially sleeved in the cylinder 15, the outer side wall of the insulating layer 3 is attached to the inner side wall of the cylinder 15, and one end of the insulating layer 3 extends out of the inner cavity 11 through the opening 12.
In this embodiment, a specific structure of the insulating layer 3 is provided, the insulating layer 3 is a cylinder with two open ends, and is sleeved on the clamping shaft, so that the inner wall of the insulating layer 3 is attached to the outer wall of the clamping shaft, and the clamping shaft can also be sleeved with the disc spring, so that the inner wall of the insulating layer 3 is attached to the outer wall of the disc spring. The anti-breakdown cover 1 is sleeved outside the insulating layer 3, so that the outer side wall of the insulating layer 3 is attached to the inner side wall of the cylinder 15, the anti-breakdown cover 1 can be isolated and insulated from the clamping shaft, and the anti-breakdown cover 1 and the disc spring can be prevented from sliding in relative displacement by utilizing the large friction coefficient of the insulating layer 3, so that an anti-slip effect is achieved.
In one embodiment, the gas outlet 14 is disposed on the plugging plate 16.
In this embodiment, a specific position of the air outlet hole 14 is provided, the clamping shaft is vertically installed, so that after the puncture preventing cover 1 covers the clamping shaft, the opening 12 faces downward, the position of the plugging plate 16 is above, and the medium in the internal cavity 11 can diffuse upward, so that the air outlet hole 14 is arranged on the plugging plate 16 to facilitate diffusion of the medium.
Fig. 3 is a schematic structural diagram of a reactor according to an embodiment of the present invention, and fig. 4 is a schematic partial enlarged structural diagram of fig. 3 according to the present invention. As shown in fig. 3 and 4, in an embodiment, the present application further provides a reactor including a clamping shaft 101 and a disc spring 102, and the breakdown preventing device;
the disc spring 102 is coaxially sleeved on the clamping shaft 101;
the anti-breakdown cover 1 is sleeved outside the clamping shaft 101 and the disc spring 102, and the anti-breakdown cover 1 isolates the clamping shaft 101 from the disc spring 102 through the insulating layer 3, and the second end 22 of the contact connecting piece 22 is connected and communicated with the clamping shaft 101 or the disc spring 102.
In this embodiment, a specific structure of a reactor is provided, the reactor includes a clamping shaft 101 and a disc spring 102, the disc spring 102 is a circular ring structure with two open ends, the disc spring 102 is sleeved on the clamping shaft 101, the clamping shaft 101 and the disc spring 102 are sleeved in an internal cavity 11 together by a breakdown preventing cover 1, and at this time, the clamping shaft 101 of the reactor is wrapped by the breakdown preventing cover 1, so that the external shape is an outer contour 13 of the breakdown preventing cover 1, that is, a smooth curved surface. The second end 22 of the contact connection member 2 is connected to the clamping shaft 101 or the disc spring 102 so that the breakdown preventing cover 1 can uniformly clamp an electric field on the shaft 101, and it should be noted that the breakdown preventing cover 1 isolates the clamping shaft 101 from the disc spring 102 through the insulating layer 3, and prevents the clamping shaft 101 or the disc spring 102 from being in contact with the breakdown preventing cover 1. In addition, since the occurrence of a floating potential, that is, the breakdown preventing cap 1 is prevented in a high-voltage environment, the breakdown preventing cap 1 and the clamping shaft 101, and the disc spring 102 are brought to the same potential through the contact connector 2.
In one embodiment, the internal cavity 11 is a cylindrical cavity;
the insulating layer 3 is a cylinder with two open ends, the insulating layer 3 is sleeved in the inner cavity 11 in the anti-breakdown cover 1, the outer side wall of the insulating layer 3 is attached to the inner side wall of the anti-breakdown cover 1, and one end of the insulating layer 3 extends out of the inner cavity 11 through the opening 12;
the inner side wall of the insulating layer 3 is jointed with the outer side wall of the disc spring 102.
The present application provides a specific construction of the interior cavity 11 and the mating mounting relationship of the insulating layer 3 and the interior cavity 11. The insulating layer 2 is understood to be a cylinder with openings at both ends made of insulating paper board, the insulating layer 3 encloses the disc spring 102 to prevent the puncture-proof cover 1 from contacting the disc spring 102, and the clamping shaft 101 has the possibility of contacting the puncture-proof cover 1, but since the diameter of the clamping shaft 101 is smaller than the outer diameter of the disc spring 102, the puncture-proof cover 1 is not in contact with the puncture-proof cover 1, and one end of the insulating layer 3 protrudes out of the inner cavity 11 through the opening 12 because a height of the puncture-proof cover 1 is set aside for the contact connector 2 to connect the disc spring 102.
In one embodiment, the reactor further comprises a clamp web 103 and a fastening device 104;
a clamping shaft 102 is arranged on the clamping piece web 103, one end of the clamping shaft 102 extends out of the upper side of the clamping piece web 103, and the disc spring 102 is arranged on the clamping piece web 103;
the fastening device 104 is mounted on the clamping shaft 101, and the fastening device 104 clamps the disc spring 102 with the clamping piece web 103;
the second end 22 of the contact connecting piece 2 is annular, and the second end 22 is coaxially sleeved on the clamping shaft 101 and is pressed between the disc spring 102 and the clamp web 103 so as to realize the conduction between the second end 22 and the disc spring 102.
The present embodiment provides an assembly mode when the second end 22 of the contact connecting piece 2 is annular, wherein the fastening device 104 comprises a cushion block and a nut, the cushion block is sleeved on the clamping shaft 101 coaxially in an annular shape, and the nut and the screw thread on the clamping shaft 101 clamp the disc spring 102 and the cushion block together after being screwed tightly. The second end 22, which is annularly sleeved on the clamping shaft 101, is clamped between the disc spring 102 and the clamp web 103 to prevent false connection.
The method has the specific beneficial effects that:
by means of the uniform electric field of the smooth curved outer contour 13 of the anti-breakdown cover 1, the discharge or breakdown phenomenon at the tip end of the clamping shaft 101 of the reactor is prevented, and the contact connection between the clamping shaft 101 and the anti-breakdown cover 1 is realized through the contact connecting piece 2.
The insulating layer 3 prevents the puncture preventing cap 1 from contacting the clamping shaft 101 and the disc spring 102 sleeved on the clamping shaft 101, so that only the contact connecting piece 2 is connected with one contact which is conducted.
The second end 22 of the contact connection 2 is of annular construction, preventing a virtual joint when in contact with the disc spring 102 on the clamping shaft 101.
The air outlet hole 14 discharges the medium of the inner cavity 11 in the puncture preventing cover 1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (8)
1. Anti-puncture device, its characterized in that, anti-puncture device includes:
the anti-breakdown cover (1) is a conductor with an inner cavity (11), one end of the anti-breakdown cover (1) is an opening (12) so that the inner cavity (11) is communicated with the outside of the anti-breakdown cover (1), and the other end of the anti-breakdown cover is provided with an air outlet hole (14) for discharging a medium in the inner cavity (11) so as to prevent the inner cavity (11) from forming a closed space after the anti-breakdown cover (1) is covered outside a protected object; the outer contour (13) of the anti-breakdown cover (1) is a smooth curved surface;
the insulation layer (3) is paved on the inner wall of the inner cavity (11) and can be attached to the periphery of the protected object, and is used for isolating the puncture-proof cover (1) and the protected object and preventing relative displacement sliding between the puncture-proof cover (1) and the protected object; and
the contact connecting piece (2), the contact connecting piece (2) is the conductor, and first end (21) of contact connecting piece (2) with the open (12) border connection of preventing puncture cover (1) switches on, second end (22) of contact connecting piece (2) are used for with protected object direct or indirect connection switches on.
2. The breakdown preventing device according to claim 1, characterized in that the second end (22) of the contact connection (2) is ring-shaped.
3. The breakdown preventing device according to claim 1 or 2, wherein the breakdown preventing cap (1) comprises:
a cylinder (15), wherein the cylinder (15) is a cylinder with the internal cavity (11) and two ends open, and the opening at one end of the cylinder (15) is used as the opening (12); and
the blocking plate (16) is used for blocking the other end of the cylinder body (15), and the joint of the blocking plate (16) and the cylinder body (15) adopts a round corner (17) for transition.
4. A breakdown preventing device according to claim 3, wherein the insulating layer (3) is a cylinder with two open ends, the insulating layer (3) is coaxially sleeved in the cylinder (15), the outer side wall of the insulating layer (3) is attached to the inner side wall of the cylinder (15), and one end of the insulating layer (3) extends out of the inner cavity (11) through the opening (12).
5. The puncture preventing device according to claim 4, wherein the gas outlet hole (14) is provided on the blocking plate (16).
6. Reactor, characterized in that it comprises:
a clamping shaft (101); and
a disc spring (102), wherein the disc spring (102) is coaxially sleeved on the clamping shaft (101); and
the breakdown preventing device according to any one of claims 1 to 5, wherein the breakdown preventing cover (1) is sleeved outside the clamping shaft (101) and the disc spring (102), and the breakdown preventing cover (1) isolates the clamping shaft (101) from the disc spring (102) through the insulating layer (3), and the second end (22) of the contact point connecting piece (2) is connected and conducted with the clamping shaft (101) or the disc spring (102).
7. Reactor according to claim 6, characterized in that the internal cavity (11) is a cylindrical cavity;
the insulation layer (3) is a cylinder with two open ends, the insulation layer (3) is sleeved in the internal cavity (11) in the anti-breakdown cover (1), and the outer side wall of the insulation layer (3) is attached to the inner side wall of the anti-breakdown cover (1);
the inner side wall of the insulating layer (3) is attached and sleeved with the outer side wall of the disc spring (102).
8. The reactor according to claim 7, characterized in that the reactor further comprises:
a clamp web (103), the clamp web (103) is provided with the clamping shaft (101), one end of the clamping shaft (101) extends out of the clamp web (103), and the disc spring (102) is arranged on the clamp web (103);
-a fastening device (104), said fastening device (104) being mounted on said clamping shaft (101), and said fastening device (104) clamping said disc spring (102) with said clamping web (103);
the second end (22) of the contact connecting piece (2) is annular, the second end (22) is coaxially sleeved on the clamping shaft (101), and the second end is arranged between the disc spring (102) and the clamping piece web (103) in a pressing mode to achieve conduction between the second end (22) and the disc spring (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404928.5A CN113130191B (en) | 2019-12-31 | 2019-12-31 | Breakdown preventing device and reactor thereof |
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|---|---|---|---|
| CN201911404928.5A CN113130191B (en) | 2019-12-31 | 2019-12-31 | Breakdown preventing device and reactor thereof |
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| CN113130191A CN113130191A (en) | 2021-07-16 |
| CN113130191B true CN113130191B (en) | 2023-06-30 |
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Citations (1)
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| CN203367039U (en) * | 2013-08-08 | 2013-12-25 | 贵州长征电力设备有限公司 | Sealing device of on-load tap-changer oil chamber contact |
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| JPH04348508A (en) * | 1991-05-27 | 1992-12-03 | Toshiba Corp | Static induction electric device |
| JPH08236977A (en) * | 1995-02-28 | 1996-09-13 | Sony Tektronix Corp | Housing of electric measurement device |
| CN201262885Y (en) * | 2008-08-27 | 2009-06-24 | 保定天威集团有限公司 | External loading type conformal shielding made through bending copper or aluminium tube stick for transformer structural member |
| JP2012124368A (en) * | 2010-12-09 | 2012-06-28 | Mitsumi Electric Co Ltd | Transformer |
| CN202259955U (en) * | 2011-05-09 | 2012-05-30 | 国网电力科学研究院 | Oil-SF6 sleeve electric connection component having shielding cover |
| JP2013065762A (en) * | 2011-09-20 | 2013-04-11 | Toshiba Corp | Stationary induction apparatus |
| CN202794256U (en) * | 2012-08-23 | 2013-03-13 | 云南电力试验研究院（集团）有限公司电力研究院 | Shielding cover for transformer test |
| CN104330594A (en) * | 2014-11-05 | 2015-02-04 | 国网辽宁省电力有限公司抚顺供电公司 | Partial discharge test shielding cover for large transformer |
| CN108931675A (en) * | 2017-05-27 | 2018-12-04 | 天津通安变压器有限公司 | Multi-functional high-power transformer partial discharge test shielding case |
| CN109524186B (en) * | 2018-10-26 | 2020-12-18 | 河南平高电气股份有限公司 | Metal oxide arrester for GIS |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203367039U (en) * | 2013-08-08 | 2013-12-25 | 贵州长征电力设备有限公司 | Sealing device of on-load tap-changer oil chamber contact |
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Address after: No.10, Weihua West Road, Shizhong District, Jinan City, Shandong Province Applicant after: Jinan Siemens Energy Transformer Co.,Ltd. Address before: No.10, Weihua West Road, Shizhong District, Jinan City, Shandong Province Applicant before: SIEMENS TRANSFORMER (JINAN) CO.,LTD. |
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