CN212784739U - Switching-on/off circuit, structure and feeder terminal - Google Patents
Switching-on/off circuit, structure and feeder terminal Download PDFInfo
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- CN212784739U CN212784739U CN202021395154.2U CN202021395154U CN212784739U CN 212784739 U CN212784739 U CN 212784739U CN 202021395154 U CN202021395154 U CN 202021395154U CN 212784739 U CN212784739 U CN 212784739U
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Abstract
The utility model discloses a separating and closing circuit, structure and feeder terminal, the utility model discloses a set up the relay, the relay includes coil and normally closed contact, coil one end is used for connecting the negative pole of power, the other end of coil is connected separating brake switch one end and separating brake coil one end, closing brake switch one end is used for connecting the power positive pole, the closing brake switch other end is connected the normally closed contact, closing brake coil one end is connected the normally closed contact, the closing brake coil other end is connected separating brake coil one end is used for connecting the one end of the negative pole of power; when the opening switch is closed, the coil is conducted, so that the normally closed contact is disconnected, the closing loop is disconnected, smooth opening operation is guaranteed, the opening switch is not damaged, and the direct-current switch can be widely applied to the technical field of direct-current switches.
Description
Technical Field
The utility model belongs to the technical field of direct current switch technique and specifically relates to a switching on and switching off circuit, structure and feeder terminal.
Background
At present, an FTU (Feeder Terminal Unit) has a universal switching-closing circuit, as shown in fig. 1, a high-power direct-current arc breaking capability is required for HZ and FZ contacts in a specification, and the reliability of the HZ contact is guaranteed by giving "switching-off priority" which is one of the safety of a power grid to the switching-off priority. According to the existing general opening and closing circuit, when manual operation is not returned in time and just closing is performed on a fault line and equipment, because the closing circuit is continuously conducted, if the opening is performed by a control signal at the moment, the opening is unsuccessful, the opening switch is always driven to be always opened, and the opening switch is damaged by frequent operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide a: provided are a switching circuit, a switching structure and a feeder terminal.
The utility model adopts the technical proposal that:
a switching circuit comprising: the device comprises a relay, an opening switch, an opening coil, a closing switch and a closing coil;
the relay comprises a coil and a normally closed contact, one end of the coil is used for being connected with a negative electrode of a power supply, and the other end of the coil is connected with one end of the opening switch and one end of the opening coil;
the other end of the opening switch is connected with the anode of the power supply;
the other end of the opening coil is connected with the negative electrode of the power supply;
one end of the closing switch is used for connecting the positive pole of a power supply, and the other end of the closing switch is connected with the normally closed contact;
and one end of the closing coil is connected with the normally closed contact, and the other end of the closing coil is connected with one end of the opening coil, which is used for connecting the negative pole of the power supply.
And the opening coil is connected with the opening switch through the pressing plate.
The closing coil is connected with the normally closed contact through the pressing plate.
The power supply is characterized by further comprising a pressing plate, wherein one end of the pressing plate is used for being connected with the negative electrode of the power supply, and the other end of the pressing plate is connected with one end of the opening coil, which is used for being connected with the negative electrode of the power supply.
Further, the pressure plate is a mechanical switch.
Further, the opening switch or the closing switch is provided in the form of a button.
The utility model also provides a structure, include divide-shut brake circuit with the power.
Further, the power supply comprises a 10KV power distribution overhead line
The utility model also provides a feeder terminal, include divide-shut brake circuit.
The utility model has the advantages that: by arranging the relay, the relay comprises a coil and a normally closed contact, one end of the coil is used for being connected with the negative pole of a power supply, the other end of the coil is connected with one end of the opening switch and one end of the opening coil, one end of the closing switch is used for being connected with the positive pole of the power supply, the other end of the closing switch is connected with the normally closed contact, one end of the closing coil is connected with the normally closed contact, and the other end of the closing coil is connected with one end of the opening coil which is used for being connected with the negative pole of the; when the opening switch is closed, the coil is conducted, so that the normally closed contact is disconnected, the closing loop is disconnected, the smooth operation of opening is ensured, and the opening switch is not damaged.
Drawings
FIG. 1 is a schematic diagram of a prior art opening and closing circuit;
fig. 2 is a schematic diagram of the opening and closing circuit according to the embodiment of the present invention.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "second," "third," and the like in the description and claims of this application and in the accompanying drawings are used solely to distinguish between different objects and not necessarily to describe a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The invention will be further explained and explained with reference to the drawings and the embodiments in the following description.
Referring to fig. 2, the embodiment of the utility model provides a switching-on/off circuit, including relay J, switching-off switch K1, switching-off coil L1, closing switch K2, closing coil L2 and a plurality of clamp plate.
In this embodiment, the switching on/off circuit is used to connect a power source, optionally a distribution overhead line with a power source size of 10KV, having a positive pole K + and a negative pole K-.
Referring to fig. 2, in the present embodiment, the relay J includes a coil, a normally closed contact a and an open contact B, one end of the coil is used for connecting a negative electrode K "of a power supply, and the other end of the coil is connected to one end of the opening switch K1 and one end of the opening coil L1;
in this embodiment, the other end of the opening switch K1 is connected to the positive electrode K + of the power supply.
In this embodiment, the other end of the opening coil L1 is connected to the negative electrode K-of the power supply.
Referring to fig. 2, in this embodiment, one end of the closing switch K2 is used to connect to the positive electrode K + of the power supply, and the other end of the closing switch K2 is connected to the normally closed contact a, that is, when the coil is not energized, the closing switch K2 and the normally closed contact a are in a conducting state; when the coil is energized, the closing switch K2 connects the opening contact B, so that the closing switch K2 and the normally closed contact a are in an open state.
Alternatively, the closing switch K2 and the opening switch K1 are both provided in the form of buttons.
Referring to fig. 2, in this embodiment, one end of the closing coil L2 is connected to the normally closed contact a, and the other end of the closing coil L2 is connected to one end of the opening coil L1 for connecting to the negative electrode K-of the power supply.
In the present embodiment, the pressing plates include a switching-off pressing plate K3, and the switching-off coil L1 and the switching-off switch K1 are connected through the switching-off pressing plate K3. By providing the opening pressure plate K3, the opening circuit can be disconnected during maintenance.
Optionally, the pressing plates include a closing pressing plate K4, and the closing coil L2 is connected to the normally closed contact a through the closing pressing plate K4. By providing the closing pressure plate K4, the closing circuit can be disconnected during maintenance.
Optionally, the pressing plates include a service pressing plate K5, the opening coil L1 is connected to the negative electrode K-of the power supply through the service pressing plate K5, and the service pressing plate K5 may not be provided in other embodiments. In the embodiment, one end of the maintenance pressure plate K5 is used for connecting the negative electrode K-of the power supply, and the other end of the maintenance pressure plate K5 is connected with one end of the opening coil L1 used for connecting the negative electrode K-of the power supply.
Referring to fig. 2, optionally, the opening and closing pressure plate K3, the closing pressure plate K4, and the maintenance pressure plate K5 are mechanical switches, and the existing solution does not have the function of opening and closing pressure plate K4, or part of factory-set switches are not implemented in a direct series connection in an opening and closing loop, but an MCU is used to collect the switch position and close and open the opening and closing through software locking, which is costly and unreliable, for example, an FTU software function is incomplete, which may cause the opening and closing malfunction under specific conditions: in voltage time type feeder automation, when one side is powered on, the section switch can carry out X time timing, and after the timing is finished, the section switch can carry out 'power on closing'. The function of 'incoming call switching on' needs to be locked when the remote control switching-off and the manual switching-off are carried out; compared with the existing scheme, the scheme can save cost, can avoid potential safety hazards caused by device faults and incomplete logic functions, and is more reliable.
Usually, when the manual operation is not returned in time and just closes the switch on the faulty line and equipment, a 'jumping' phenomenon, that is, a continuous switching phenomenon of the switch, occurs.
Referring to fig. 2, the following describes the specific working process of the present invention in detail: when the opening switch K1 is closed, the coil is conducted, so that the normally closed contact A of the relay J in the closing loop is disconnected, the closing switch K2 is connected with the disconnecting contact B, the closing loop is disconnected, the normal operation of opening operation is ensured, the closing operation cannot be carried out, the purpose of preventing jumping is achieved, and the opening switch K1 can be protected.
This scheme still provides a structure, including above-mentioned divide-shut brake circuit with the power.
Optionally, the power source comprises a 10KV distribution overhead line.
This scheme still provides a feeder terminal, includes above-mentioned divide-shut brake circuit.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (9)
1. A switching-on/off circuit, comprising: the device comprises a relay, an opening switch, an opening coil, a closing switch and a closing coil;
the relay comprises a coil and a normally closed contact, one end of the coil is used for being connected with a negative electrode of a power supply, and the other end of the coil is connected with one end of the opening switch and one end of the opening coil;
the other end of the opening switch is connected with the anode of the power supply;
the other end of the opening coil is connected with the negative electrode of the power supply;
one end of the closing switch is used for connecting the positive pole of a power supply, and the other end of the closing switch is connected with the normally closed contact;
and one end of the closing coil is connected with the normally closed contact, and the other end of the closing coil is connected with one end of the opening coil, which is used for connecting the negative pole of the power supply.
2. The switching-closing circuit according to claim 1, characterized in that: the switching-off coil is connected with the switching-off switch through the pressing plate.
3. The switching-closing circuit according to claim 1, characterized in that: the closing coil is connected with the normally closed contact through the pressing plate.
4. The switching-closing circuit according to claim 1, characterized in that: the power supply is characterized by further comprising a pressing plate, one end of the pressing plate is used for being connected with the negative pole of the power supply, and the other end of the pressing plate is connected with the opening coil and is used for being connected with one end of the negative pole of the power supply.
5. The switching-closing circuit according to any one of claims 2 to 4, wherein: the pressure plate is a mechanical switch.
6. The switching-closing circuit according to claim 1, characterized in that: the opening switch or the closing switch is arranged in a button mode.
7. A structure, characterized by: comprising a switching-on/off circuit according to any of claims 1-6 and said power supply.
8. The structure of claim 7, wherein: the power supply comprises a 10KV distribution overhead line.
9. A feeder terminal, characterized by: comprising a switching-on/off circuit according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021395154.2U CN212784739U (en) | 2020-07-15 | 2020-07-15 | Switching-on/off circuit, structure and feeder terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021395154.2U CN212784739U (en) | 2020-07-15 | 2020-07-15 | Switching-on/off circuit, structure and feeder terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212784739U true CN212784739U (en) | 2021-03-23 |
Family
ID=75078331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021395154.2U Active CN212784739U (en) | 2020-07-15 | 2020-07-15 | Switching-on/off circuit, structure and feeder terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212784739U (en) |
-
2020
- 2020-07-15 CN CN202021395154.2U patent/CN212784739U/en active Active
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