CN213212896U - Isolation knife structure of solid insulation switch - Google Patents
Isolation knife structure of solid insulation switch Download PDFInfo
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- CN213212896U CN213212896U CN202021773163.0U CN202021773163U CN213212896U CN 213212896 U CN213212896 U CN 213212896U CN 202021773163 U CN202021773163 U CN 202021773163U CN 213212896 U CN213212896 U CN 213212896U
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- sword
- isolation
- shaft sleeve
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Abstract
Through setting up detachable fixed connection's setting element, reference column, when not influencing the motion of isolation sword, keep first blade, second blade separately and keep apart the interval between the sword motion intracavity wall, contradict by the reference column and keep, first blade, second blade can not take place inside wall one side skew. The minimum distance between the two blades is controlled by combining the shaft sleeve part between the first blade and the second blade, so that the situation that the two blades are too close to each other and cannot be matched with the fixed contact of the isolation knife is prevented. The shaft sleeve is arranged in the inner part, the positioning column is arranged outside the inner part, and the shaft sleeve and the positioning column are combined, so that the two blades are always kept at a certain position to prevent deviation, and the opening and closing brake is accurate and reliable in movement.
Description
Technical Field
The invention relates to the technical field of solid insulated switches, in particular to a structure of a solid insulated switch.
Background
The Ring Main Unit (Ring Main Unit) is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval Ring Main power supply Unit, and the core part of the Ring Main Unit adopts a vacuum circuit breaker or a load switch and a fuse, so that the Ring Main Unit has the advantages of improving power supply parameters and performance, improving power supply safety and the like. The ring main units can be classified into air-insulated ring main units, SF6 gas (sulfur hexafluoride gas) -insulated inflatable ring main units and solid-insulated ring main units insulated by epoxy resin according to different insulating media. The transformer substation is widely applied to distribution stations and box-type substations of load centers such as urban residential districts, high-rise buildings, large-scale public buildings, factory enterprises and the like.
The solid insulation ring main unit adopts epoxy resin material as an insulation cylinder, organically combines a vacuum arc extinguish chamber, a main conductive loop, an insulation support and the like into a whole by a solid-sealed pole technology, and realizes the functions of load distributing and combining current or fault current, load isolation and the like by the movement of an operating mechanism, thereby realizing the control of a power supply and distribution system and the protection of equipment and personal safety.
The problems in the prior art are that: an isolating knife moving cavity is generally arranged in the insulating cylinder to provide a moving space for the isolating knife, and in the moving cavity, the isolating knife performs switching-on and switching-off movement relative to a fixed contact of the isolating knife.
In the long-term use process, if the isolation blade is bent or the hinge is loosened for various reasons, the isolation blade can deviate in position during switching on, and the isolation blade does not accurately contact the static contact of the isolation blade, so that the whole insulation switch fails, and therefore the conventional insulation switch lacks a structure for protecting the isolation blade from being accurate in movement track.
Disclosure of Invention
In order to solve the technical defects, the invention provides the isolating knife structure for protecting the isolating knife and the static contact from being accurately switched on and preventing the motion trail of the isolating knife from deviating.
The technical scheme of the invention is as follows: the utility model provides a solid insulated switch's isolation sword structure, includes the insulating cylinder, is equipped with in this insulating cylinder and keeps apart sword motion chamber and be located the isolation blade, blade holder, keep apart sword static contact, the insulating pull rod of keeping apart sword motion intracavity, keep apart the blade and include parallel arrangement's first blade and second blade, keep apart the sword static contact and set up between first blade and second blade, its characterized in that: and positioning columns extending to the inner wall surface of the motion cavity of the isolation knife are arranged on the end surfaces of the first blade and the second blade, which are back to the static contact of the isolation knife, and the positioning columns are in sliding fit with the inner wall surface of the motion cavity.
By adopting the technical scheme, the movement of the isolation knife is not influenced, and meanwhile, the distance between the first blade and the inner wall of the movement cavity of the isolation knife and the distance between the second blade and the inner wall of the movement cavity of the isolation knife are kept by the abutting of the positioning columns, so that the first blade and the second blade cannot deviate towards one side of the inner wall.
The utility model discloses a further setting: still include the setting element in keeping apart the sword motion chamber, first blade, the detachable fixed connection of second blade on this setting element, the reference column sets up on the setting element.
By adopting the technical scheme, the positioning columns can be formed on the blades without being arranged on the positioning pieces fixedly connected in a detachable mode, and all kinds of blades can be adapted to the positioning columns through subsequent assembly connection without changing the traditional process of isolating the blades.
The utility model discloses a further setting: the positioning piece is U-shaped and provided with a sleeve hole, and the first blade and the second blade are inserted into the sleeve hole and clamped.
The utility model discloses a further setting: the first blade and the second blade are coaxially provided with connecting holes at one sides close to the static contact of the isolation knife, a shaft sleeve and a bolt are arranged between the first blade and the second blade, the shaft sleeve and the connecting holes are coaxially arranged, two end faces of the shaft sleeve are respectively abutted against the first blade and the second blade, and the bolt penetrates through the connecting holes and the shaft sleeve to be fixedly connected.
By adopting the technical scheme, the shaft sleeve piece arranged between the first blade and the second blade is utilized to control the minimum distance between the two blades, so that the situation that the two blades are too close to each other and cannot be matched with the static contact of the isolation knife is prevented. The shaft sleeve is arranged in the inner part, the positioning column is arranged outside the inner part, and the shaft sleeve and the positioning column are combined, so that the two blades are always kept at a certain position to prevent deviation, and the opening and closing brake is accurate and reliable in movement.
The utility model discloses a further setting: the bolt comprises a nut, a screw and a nut, and disc springs are sleeved between the nut and the first blade and between the nut and the second blade.
By adopting the technical scheme, the disc spring is arranged, the first blade and the second blade are driven to be tightly attached to the shaft sleeve while the bolt is prevented from being loosened, the length of the control shaft sleeve corresponds to the isolation knife fixed contact, and therefore the purpose that the first blade and the second blade can be accurately attached to the isolation knife fixed contact when the switch is switched on is achieved.
The utility model discloses a further setting: the end face of the positioning column, facing the motion cavity of the isolation knife, is a ball head, and a plurality of reinforcing ribs are arranged on the peripheral face of the positioning column.
By adopting the technical scheme, the ball head is beneficial to sliding, and the reinforcing ribs prevent the positioning columns from being broken.
The utility model discloses a further setting: the tool apron, the first blade and the second blade are correspondingly provided with hinge holes, and bolts and disc springs are inserted into the hinge holes.
Adopt above-mentioned technical scheme, prevent to keep apart the hinged joint pine between blade and the blade holder and take off.
Drawings
FIG. 1 is a block diagram of an embodiment of the present invention 1;
FIG. 2 is a block diagram of an embodiment of the present invention 2;
FIG. 3 is an exploded view of an embodiment of the present invention;
FIG. 4 is a block diagram of an embodiment of the present invention, FIG. 3;
fig. 5 is a structure diagram of a positioning element according to an embodiment of the invention.
The reference numbers in the drawings are respectively: 1. the insulation device comprises an insulation cylinder, 11-an isolation knife motion cavity, 2-an isolation knife, 21-a first knife, 22-a second knife, 23-a positioning column, 24-a connecting hole, 3-a knife holder, 4-an isolation knife static contact, 5-an insulation pull rod, 6-a positioning piece, 61-a sleeve hole, 7-a shaft sleeve piece, 8-a bolt, 81-a nut, 82-a nut and 83-a disc spring.
Detailed Description
The utility model discloses the inlet wire is introduced in detail below with the accompanying drawings, as shown in fig. 1-5, a solid insulated switch's isolation sword structure, including insulating cylinder 1, be equipped with in this insulating cylinder 1 and keep apart sword motion chamber 11 and lie in isolation sword motion chamber 11 keep apart blade 2, blade holder 3, keep apart sword static contact 4, insulating pull rod 5, keep apart blade 2 including parallel arrangement's first blade 21 and second blade 22, keep apart sword static contact 4 and set up between first blade 21 and second blade 22, first blade 21, second blade 22 are equipped with the reference column 23 that extends to isolation sword motion chamber 11 internal face separately on keeping apart the terminal surface of sword static contact 4, and this reference column 23 is sliding fit with the motion chamber internal face.
Through the positioning column 23, the movement of the isolation knife is not influenced, and meanwhile, the distance between each of the first blade 21 and the second blade 22 and the inner wall of the isolation knife movement cavity 11 is kept, and the first blade 21 and the second blade 22 are kept by the interference of the positioning column 23, so that the first blade 21 and the second blade 22 cannot deviate towards one side of the inner wall.
The isolating knife movement cavity 11 further comprises a positioning part 6, the first blade 21 and the second blade 22 on the positioning part 6 are detachably and fixedly connected, and the positioning column 23 is arranged on the positioning part 6.
Through setting up detachable fixed connection's setting element 6, reference column 23 can be unnecessary the shaping on the blade, can make all kinds of blades all can be adapted to through follow-up assembly connection, need not to change the traditional handicraft of keeping apart blade 2.
The positioning member 6 is U-shaped and has a sleeve hole 61, and the first blade 21 and the second blade 22 are inserted into the sleeve hole 61 and fastened together.
The first blade 21 and the second blade 22 are coaxially provided with a connecting hole 24 on one side close to the isolating blade fixed contact 4, a shaft sleeve 7 and a bolt 8 are arranged between the first blade 21 and the second blade 22, the shaft sleeve 7 and the connecting hole 24 are coaxially arranged, two end faces of the shaft sleeve 7 are respectively abutted against the first blade 21 and the second blade 22, and the bolt 8 penetrates through the connecting hole 24 and the shaft sleeve 7 to be fixedly connected.
The shaft sleeve member 7 arranged between the first blade 21 and the second blade 22 is used for controlling the minimum distance between the two blades, so as to prevent the two blades from being too close to each other to be matched with the isolation knife static contact 4. The shaft sleeve is arranged in the inner part, the positioning column 23 is arranged outside the inner part, and the shaft sleeve and the positioning column are combined to enable the two blades to always keep a certain position, so that deviation is prevented, and the opening and closing brake can move accurately and reliably.
The bolt 8 comprises a nut 81, a screw and a nut 82, and disc springs 83 are respectively sleeved between the nut 82 and the first blade 21 and between the nut 81 and the second blade 22.
Through the dish spring 83 that sets up, when preventing that 8 pine of bolt from taking off, order about first blade 21, second blade 22 and hug closely axle external member 7, the length of control axle external member 7 corresponds with isolation sword static contact 4 in addition to reach first blade 21 of accurate control, second blade 22 when closing a floodgate, can the accurate mesh of laminating isolation sword static contact 4.
The end face of the positioning column 23 facing the isolating knife moving cavity 11 is a ball head, and a plurality of reinforcing ribs are arranged on the peripheral face of the positioning column 23.
The bulb does benefit to the slip, and the strengthening rib prevents that reference column 23 from splitting.
The tool apron 3, the first blade 21 and the second blade 22 are correspondingly provided with hinge holes, and bolts 8 and disc springs 83 are inserted into the hinge holes.
Preventing the hinge connection between the insulating blade 2 and the holder 3 from being released.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (7)
1. The utility model provides a solid insulated switch's isolation sword structure, includes the insulating cylinder, is equipped with in this insulating cylinder and keeps apart sword motion chamber and be located the isolation blade, blade holder, keep apart sword static contact, the insulating pull rod of keeping apart sword motion intracavity, keep apart the blade and include parallel arrangement's first blade and second blade, keep apart the sword static contact and set up between first blade and second blade, its characterized in that: and positioning columns extending to the inner wall surface of the motion cavity of the isolation knife are arranged on the end surfaces of the first blade and the second blade, which are back to the static contact of the isolation knife, and the positioning columns are in sliding fit with the inner wall surface of the motion cavity.
2. The isolating blade structure of the solid insulated switch according to claim 1, wherein: still include the setting element in keeping apart the sword motion chamber, first blade, the detachable fixed connection of second blade on this setting element, the reference column sets up on the setting element.
3. The isolating blade structure of the solid insulated switch according to claim 2, wherein: the positioning piece is U-shaped and provided with a sleeve hole, and the first blade and the second blade are inserted into the sleeve hole and clamped.
4. The isolating blade structure of the solid insulated switch according to any one of claims 1 to 3, wherein: the first blade and the second blade are coaxially provided with connecting holes at one sides close to the static contact of the isolation knife, a shaft sleeve and a bolt are arranged between the first blade and the second blade, the shaft sleeve and the connecting holes are coaxially arranged, two end faces of the shaft sleeve are respectively abutted against the first blade and the second blade, and the bolt penetrates through the connecting holes and the shaft sleeve to be fixedly connected.
5. The isolating blade structure of the solid insulated switch according to claim 4, wherein: the bolt comprises a nut, a screw and a nut, and disc springs are sleeved between the nut and the first blade and between the nut and the second blade.
6. The isolating blade structure of the solid insulated switch according to claim 5, wherein: the end face of the positioning column, facing the motion cavity of the isolation knife, is a ball head, and a plurality of reinforcing ribs are arranged on the peripheral face of the positioning column.
7. The isolating blade structure of the solid insulated switch according to claim 6, wherein: the tool apron, the first blade and the second blade are correspondingly provided with hinge holes, and bolts and disc springs are inserted into the hinge holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021773163.0U CN213212896U (en) | 2020-08-21 | 2020-08-21 | Isolation knife structure of solid insulation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021773163.0U CN213212896U (en) | 2020-08-21 | 2020-08-21 | Isolation knife structure of solid insulation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213212896U true CN213212896U (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021773163.0U Active CN213212896U (en) | 2020-08-21 | 2020-08-21 | Isolation knife structure of solid insulation switch |
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| CN (1) | CN213212896U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103120A (en) * | 2020-09-02 | 2020-12-18 | 宁波木易电气有限公司 | Center positioning device for isolation knife assembly of solid-sealed polar pole |
-
2020
- 2020-08-21 CN CN202021773163.0U patent/CN213212896U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112103120A (en) * | 2020-09-02 | 2020-12-18 | 宁波木易电气有限公司 | Center positioning device for isolation knife assembly of solid-sealed polar pole |
| CN112103120B (en) * | 2020-09-02 | 2023-06-27 | 宁波木易电气有限公司 | Center positioning device for solid-sealed pole isolation knife assembly |
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