CN215678471U - Quick switching operation mechanism for secondary circuit of current transformer - Google Patents
Quick switching operation mechanism for secondary circuit of current transformer Download PDFInfo
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- CN215678471U CN215678471U CN202121655462.9U CN202121655462U CN215678471U CN 215678471 U CN215678471 U CN 215678471U CN 202121655462 U CN202121655462 U CN 202121655462U CN 215678471 U CN215678471 U CN 215678471U
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Abstract
The utility model provides a quick switching operation mechanism for a secondary circuit of a current transformer. Quick switching operating device of current transformer secondary circuit includes: the device comprises a mounting box, four common terminals, four grounding terminals, four detection terminals, a starting part and two suction parts, wherein the four common terminals, the four grounding terminals and the four detection terminals all penetrate through the bottom of the mounting box; the actuation part comprises an electromagnetic relay which is fixedly arranged at the top of the inner wall of the mounting box, and a magnet block is arranged below the electromagnetic relay. The quick switching operation mechanism for the secondary circuit of the current transformer, provided by the utility model, adopts the electromagnetic force to perform switching action by arranging the starting part and the two attraction parts, and isolates an operator from the secondary circuit, so that the operator can conveniently control the quick switching operation mechanism more safely while saving labor, and can freely adjust the electromagnetic force, thereby ensuring that the circuit is closed more effectively.
Description
Technical Field
The utility model relates to the technical field of current transformers of transformer substations, in particular to a quick switching operation mechanism for a secondary circuit of a current transformer.
Background
When the high-voltage circuit breaker of the transformer substation is subjected to maintenance operation, the short circuit is needed to withdraw from the secondary current loop of the corresponding current transformer, so that the current loop of the maintenance equipment and the current loop of the operation equipment are isolated. This function requires the use of a current switching operator, commonly referred to as a high current switching terminal, at the substation, to allow communication and isolation of the secondary current loop. The operations mainly aim at isolating a secondary current loop with bus differential protection in a double-bus and sectional bus connection mode, line protection in an 3/2 connection mode and transformer protection from a secondary loop of a current transformer of the overhauled equipment.
An authorization notice number CN 210514548U discloses a quick switching operation mechanism for a secondary circuit of a current transformer, and relates to the field of current transformers of transformer substations. At present, a secondary circuit switching operation part of the current transformer adopts a bolt structure, the operation is complex, the switching part has no linkage locking function, and the misoperation danger is easy to occur. The component comprises a base, a bidirectional switching disconnecting link, a disconnecting link connecting static contact connected with a secondary circuit of a current transformer, a protection static contact connected with a protection secondary current circuit and a current secondary circuit short circuit grounding static contact, wherein the protection static contact and the current secondary circuit short circuit grounding static contact are respectively arranged on the left side and the right side of the disconnecting link connecting static contact; the bidirectional switching knife switch is connected with the knife switch connecting static contact and can rotate in the left direction or the right direction to realize the switching-on with different static contacts; an interlocking lock catch is arranged between the bidirectional switching knife switch and the base, and when the bidirectional switching knife switch is switched to be in contact with the protection static contact for closing, the lock catch is locked to enable the switching operation handle to be pulled open by mistake. The open circuit accident of the current secondary circuit can be avoided, and the circuit switching efficiency is improved.
However, the above-mentioned solutions still have disadvantages, and the solutions adopt a knife switch type solution, and the opening and closing of the knife switch needs to be closed with a large force, and the long-term opening and closing is likely to cause great abrasion of the contact part, so that the circuit closing effect is not good, and the circuit is open.
Therefore, it is necessary to provide a fast switching operation mechanism for the secondary circuit of the current transformer to solve the above technical problems.
Disclosure of Invention
The utility model aims to provide a quick switching operation mechanism for a secondary circuit of a current transformer.
A current transformer secondary circuit fast switching operating mechanism comprises: the device comprises a mounting box, four common terminals, four grounding terminals, four detection terminals, a starting part and two suction parts, wherein the four common terminals, the four grounding terminals and the four detection terminals all penetrate through the bottom of the mounting box;
the actuation component comprises an electromagnetic relay, the electromagnetic relay is fixedly arranged on the top of the inner wall of the mounting box, a magnet block is arranged below the electromagnetic relay, a mounting plate is fixedly arranged at the bottom of the magnet block, four copper bars are fixedly arranged at the bottom of the mounting plate, and two guides are arranged above the mounting plate;
the starting component is arranged on the mounting box and used for controlling the on-off of the electromagnetic relay.
In the current transformer secondary circuit rapid switching operation mechanism, a first contact plate is fixedly mounted at the top of the common terminal, and second contact plates are fixedly mounted at the tops of the grounding terminal and the detection terminal; the starting component comprises a first switch and a second switch, the first switch and the second switch are both fixedly installed on the top of the installation box, and an indicator lamp is fixedly installed on the top of the installation box; the first switch and the second switch are both button switches, and the distance between the first switch and the second switch is 30 cm.
The quick switching operation mechanism for the secondary circuit of the current transformer is characterized in that the top of the guider is fixedly connected with the top of the inner wall of the mounting box, a guide groove is formed in the bottom of the guider, a guide rod is slidably mounted in the guide groove, a first spring is arranged in the guide groove, two ends of the first spring are respectively and fixedly connected with the top of the guide groove and the top end of the guide rod, and the bottom end of the guide rod is fixedly connected with the mounting plate; the top fixed mounting of copper bar has two collets, two the collet with one side fixed mounting that the mounting panel is close to each other has a plurality of second springs.
Has the advantages that:
(1) the electromagnetic force is adopted to carry out switching action by setting the starting part and the two attracting parts, an operator is isolated from the secondary current loop, the operator is safer when controlling the operation conveniently and laborsavingly, the electromagnetic force can be freely adjusted, and the circuit closing effect is better.
(2) Through setting up first contact board and second contact board, can increase area of contact, improve electrically conductive effect.
(3) Through setting up first switch, second switch, can prevent that the mistake from touching and lead to the maloperation to arouse the accident, set up pilot lamp ability facilitate use simultaneously.
(4) The effect of preventing misoperation can be improved by arranging the first switch and the second switch at a distance of 30 cm.
(5) Through setting up director, guide bar and first spring, can play guide effect and connection effect to the mounting panel.
(6) And through the arrangement of the insulating block and the second spring, when the plurality of copper bars are closed, the copper bars can be in close contact with the first contact plate and the second contact plate below the copper bars.
Drawings
FIG. 1 is a schematic structural diagram of a secondary circuit fast switching operating mechanism of a current transformer according to the present invention;
fig. 2 is a schematic structural diagram of a guider in the secondary circuit fast switching operating mechanism of the current transformer shown in fig. 1;
fig. 3 is an assembly schematic diagram of a mounting plate and a copper bar in the secondary circuit fast switching operating mechanism of the current transformer shown in fig. 1;
fig. 4 is a schematic block diagram of a secondary circuit fast switching operation mechanism of a current transformer provided by the utility model.
Reference numbers in the figures: 1. the mounting box, 2, common terminal, 3, ground terminal, 4, four detection terminal, 5, first contact board, 6, second contact board, 7, electromagnetic relay, 8, magnet piece, 9, mounting panel, 10, copper bar, 11, first switch, 12, second switch, 13, pilot lamp, 14, director, 15, guide way, 16, guide bar, 17, first spring, 18, two collets, 19, second spring.
The specific implementation mode is as follows:
example 1:
the utility model is further described with reference to the following figures and embodiments.
Referring to fig. 1-4, in an embodiment of the present invention, a fast switching operation mechanism for a secondary circuit of a current transformer includes: the device comprises a mounting box 1, four common terminals 2, four grounding terminals 3, four detection terminals 4, a starting part and two attracting parts, wherein the four common terminals 2, the four grounding terminals 3 and the four detection terminals 4 penetrate through the bottom of the mounting box 1; the actuation component comprises an electromagnetic relay 7, the electromagnetic relay 7 is fixedly mounted on the top of the inner wall of the mounting box 1, a magnet block 8 is arranged below the electromagnetic relay 7, a mounting plate 9 is fixedly mounted at the bottom of the magnet block 8, four copper bars 10 are fixedly mounted at the bottom of the mounting plate 9, and two guides 14 are arranged above the mounting plate 9; the starting component is arranged on the mounting box 1, the starting component is used for controlling the on-off of the electromagnetic relay 7, when the electromagnetic relay is used, the electromagnetic relay and the starting component are connected with the PLC, signals are sent to the PLC through the starting component, the PLC controls the energization of the electromagnetic relay 7 on one corresponding side, the electromagnetic relay 7 is energized and repelled by the magnet block to be away from the PLC, the mounting plate 9 is made to descend, the mounting plate 9 descends to drive the copper bar 10 to descend, the copper bar 10 descends to be in contact with the public terminal 2 and the detection terminal 4, a secondary current loop is closed, coil current in the electromagnetic relay 7 can be adjusted through the PLC, the effect of changing the size of magnetic force is achieved, the downward pressure of the copper bar 10 is improved, the circuit closing effect is improved, when the PLC receives the electric signals of the starting component again, the secondary circuit loop is disconnected, and the circuit on the other side is closed.
Through setting up starting unit and two actuation parts, adopt the electromagnetic force to carry out the switching action, keep apart operator and secondary current return circuit, make operator control convenient more safe when laborsaving, and can freely adjust the electromagnetic force size, make the closed effect of circuit more.
Example 2:
the current transformer secondary circuit fast switching operating mechanism of embodiment 1:
as shown in fig. 1, a first contact plate 5 is fixedly mounted on the top of the common terminal 2, a second contact plate 6 is fixedly mounted on the top of each of the ground terminal 3 and the detection terminal 4, and the areas of the top of the first contact plate 5 and the top of the second contact plate 6 are larger.
By arranging the first contact plate 5 and the second contact plate 6, the contact area can be increased, and the conductive effect can be improved.
As shown in fig. 1, the starting part includes a first switch 11 and a second switch 12, the first switch 11 and the equal fixed mounting of second switch 12 are in the top of mounting box 1, top fixed mounting of mounting box 1 has an indicator 13, and during the use, both hands press down first switch 11 and second switch 12 simultaneously, can send a signal and give PLC, and PLC control indicator sends corresponding colour (bright display red or green) simultaneously, can make things convenient for people to observe the user state of device.
Through setting up first switch 11, second switch 12, can prevent that the mistake from touching and lead to the maloperation to arouse the accident, set up pilot lamp 13 simultaneously and can facilitate the use.
As shown in fig. 1, the first switch 11 and the second switch 12 are both button switches, and the distance between the first switch 11 and the second switch 12 is 30cm, so that when the device is used, one hand of a person is opened, generally not more than 25cm, and therefore, the operator must press both hands simultaneously to use the device.
By providing the first switch 11 and the second switch 12 at a distance of 30cm, the effect of preventing erroneous operation can be improved.
Example 3:
the current transformer secondary circuit fast switching operating mechanism of embodiment 1 or 2:
as shown in fig. 2, the top of the guide 14 is fixedly connected with the top of the inner wall of the mounting box 1, the bottom of the guide 14 is provided with a guide groove 15, a guide rod 16 is slidably mounted in the guide groove 15, a first spring 17 is arranged in the guide groove 15, two ends of the first spring 17 are respectively fixedly connected with the top of the guide groove 15 and the top end of the guide rod 16, the bottom end of the guide rod 16 is fixedly connected with the mounting plate 9, when the mounting plate 9 descends to drive the guide rod 16 to descend, and the guide rod 16 descends to drive the first spring 17 to lift.
The guide 14, the guide rod 16, and the first spring 17 are provided to guide and connect the mounting plate 9.
As shown in fig. 1 and 3, two insulating blocks 18 are fixedly mounted at the top of the copper bar 10, a plurality of second springs 19 are fixedly mounted on the side, close to each other, of the two insulating blocks 18 and the mounting plate 9, when the copper bar is used, the mounting plate 9 descends to drive the second springs 19 to descend, and the second springs 19 descend to drive the copper bar 10 to descend, so that when the heights of the copper bars are inconsistent, each copper bar 10 can be in close contact with the first contact plate 5 and the second contact plate 6 below through the self-deformable characteristic of the second springs 19.
By arranging the insulating block 18 and the second spring 19, the plurality of copper bars 10 can be in close contact with the first contact plate 5 and the second contact plate 6 below when being closed.
Claims (3)
1. The utility model provides a quick switching operating device of current transformer secondary circuit which characterized in that includes:
the device comprises a mounting box, four common terminals, four grounding terminals, four detection terminals, a starting part and two suction parts, wherein the four common terminals, the four grounding terminals and the four detection terminals all penetrate through the bottom of the mounting box;
the actuation component comprises an electromagnetic relay, the electromagnetic relay is fixedly arranged on the top of the inner wall of the mounting box, a magnet block is arranged below the electromagnetic relay, a mounting plate is fixedly arranged at the bottom of the magnet block, four copper bars are fixedly arranged at the bottom of the mounting plate, and two guides are arranged above the mounting plate;
the starting component is arranged on the mounting box and used for controlling the on-off of the electromagnetic relay.
2. The current transformer secondary circuit fast switching operating mechanism according to claim 1, wherein a first contact plate is fixedly mounted on the top of the common terminal, and a second contact plate is fixedly mounted on the top of each of the grounding terminal and the detection terminal; the starting component comprises a first switch and a second switch, the first switch and the second switch are both fixedly installed on the top of the installation box, and an indicator lamp is fixedly installed on the top of the installation box; the first switch and the second switch are both button switches, and the distance between the first switch and the second switch is 30 cm.
3. The current transformer secondary circuit fast switching operating mechanism according to claim 1, wherein the top of the guide is fixedly connected with the top of the inner wall of the mounting box, a guide groove is formed in the bottom of the guide, a guide rod is slidably mounted in the guide groove, a first spring is arranged in the guide groove, two ends of the first spring are respectively fixedly connected with the top of the guide groove and the top end of the guide rod, and the bottom end of the guide rod is fixedly connected with the mounting plate; the top fixed mounting of copper bar has two collets, two the collet with one side fixed mounting that the mounting panel is close to each other has a plurality of second springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121655462.9U CN215678471U (en) | 2021-07-21 | 2021-07-21 | Quick switching operation mechanism for secondary circuit of current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121655462.9U CN215678471U (en) | 2021-07-21 | 2021-07-21 | Quick switching operation mechanism for secondary circuit of current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215678471U true CN215678471U (en) | 2022-01-28 |
Family
ID=79980832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121655462.9U Active CN215678471U (en) | 2021-07-21 | 2021-07-21 | Quick switching operation mechanism for secondary circuit of current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215678471U (en) |
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2021
- 2021-07-21 CN CN202121655462.9U patent/CN215678471U/en active Active
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