CN217009033U - Improved electric operating mechanism of isolating switch - Google Patents
Improved electric operating mechanism of isolating switch Download PDFInfo
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- CN217009033U CN217009033U CN202220072581.XU CN202220072581U CN217009033U CN 217009033 U CN217009033 U CN 217009033U CN 202220072581 U CN202220072581 U CN 202220072581U CN 217009033 U CN217009033 U CN 217009033U
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Abstract
The utility model relates to an improved electric operating mechanism of an isolating switch, which comprises an audible and visual alarm loop, a motor main loop and an isolating switch operating loop; the motor main loop is connected with a first auxiliary contact and a second auxiliary contact of an electric isolating switch GL, and the acousto-optic alarm loop is connected on the first auxiliary contact and the second auxiliary contact of the electric isolating switch GL and is connected with the motor main loop in parallel; one end of the isolating switch operation loop is connected to a first auxiliary contact of the electric isolating switch GL through a change-over switch XK, and the other end of the isolating switch operation loop is connected to a second auxiliary contact of the electric isolating switch GL. The utility model improves the operation loop of the electric operating mechanism of the isolating switch, adds the electrified time delay relay to carry out double protection on the electric operating mechanism of the isolating switch, and simultaneously adds the sound-light alarm loop to prompt personnel to have faults.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, in particular to an improved electric operating mechanism of an isolating switch.
Background
The isolating switch is used as an obvious disconnection point between high-voltage maintenance equipment and live equipment, is indispensable equipment for each transformer substation and an electric field, and is widely applied to an electric operating mechanism to operate the isolating switch at present for convenience and rapidness in operation; after the opening and closing operation of the isolating switch is completed, most electric operating mechanisms adopt a cam on a motor shaft of the operating mechanism to press a contact of an opening and closing travel switch to stop the electric operating mechanisms, but after long-term use, the operating mechanisms are easy to have cam angle deviation, and after the opening and closing operation is completed, the cam cannot press the contact of the travel switch, so that the motor of the electric operating mechanism is always in a working state, and the motor of the operating mechanism is damaged; the condition that the disconnecting switch cannot be opened or closed in place can be caused due to the fact that the motor of the disconnecting switch operating mechanism is damaged, so that safety accidents are easy to happen, and the condition that corresponding equipment is powered off to check and process faults of the operating mechanism can be achieved only, so that certain economic loss can be caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides an improved electric operating mechanism of an isolating switch, which solves the problems of the existing electric operating mechanism of the isolating switch.
The purpose of the utility model is realized by the following technical scheme: an improved electric operating mechanism of an isolating switch comprises an audible and visual alarm loop, a motor main loop and an isolating switch operating loop; the motor main loop is connected with a first auxiliary contact and a second auxiliary contact of an electric isolating switch GL, and the acousto-optic alarm loop is connected on the first auxiliary contact and the second auxiliary contact of the electric isolating switch GL and is connected with the motor main loop in parallel; one end of the isolating switch operation loop is connected to the second auxiliary contact of the electric isolating switch GL through the change-over switch XK, and the other end of the isolating switch operation loop is connected to the first auxiliary contact of the electric isolating switch GL.
The motor main loop comprises a single-phase series motor Zd, wherein a first end of the single-phase series motor Zd is connected with a normally open contact of a first contactor in series, a second end of the single-phase series motor Zd is connected with a normally open contact of a second contactor in series, the normally open contact of the first contactor and the normally open contact of the second contactor are connected with one end of a first fuse, the other end of the first fuse is connected with one end of a generator outlet circuit breaker, and the other end of the generator outlet circuit breaker is connected with a second auxiliary contact of the electric isolating switch GL; the first end of the single-phase series excited motor ZD is connected with a normally open contact of a third contactor in parallel, the second end is connected with a normally open contact of a fourth contactor in parallel, the normally open contact of the third contactor and the normally open contact of the fourth contactor are connected with one end of an auxiliary contact SQ of the single-phase series excited motor, the other end of the auxiliary contact SQ of the single-phase series excited motor is connected with a normally open contact of a fifth contactor and a normally open contact of a sixth contactor in parallel, the normally open contact of the fifth contactor and the normally open contact of the sixth contactor are connected with a second fuse, and the second fuse is connected with a first auxiliary contact of the electric isolating switch GL.
The acousto-optic alarm circuit comprises a first time relay, a second time relay normally-open contact and a first holding relay normally-open contact which are mutually connected in parallel, one end of the acousto-optic alarm circuit after being connected in parallel is connected with the second fuse, and the other end of the acousto-optic alarm circuit after being connected in parallel is sequentially connected with a buzzer, a fault indicator lamp and the first holding relay normally-closed contact; the first holding relay normally closed contact is connected with the first fuse.
The isolating switch operation loop comprises a switching-off loop and a switching-on loop, one end of the switching-off loop and one end of the switching-on loop are connected with the second fuse, and the other end of the switching-off loop and the other end of the switching-on loop are connected with the second port of the change-over switch XK.
The fourth port of the change-over switch XK is connected with a first unit LCU and a second unit LCU, the first unit LCU is connected into the opening circuit, the second unit LCU is connected into the closing circuit, and the two units LCUs are connected with a normally open contact of a contactor in parallel; and the first port and the third port of the change-over switch XK are sequentially connected with a third control button and a third fuse, and the third fuse is connected with the first fuse.
The opening circuit comprises a first control button and a seventh contactor normally open contact connected in parallel with the first control button, the eighth contactor normally open contact, the third time relay normally closed contact, the eighth contactor normally closed contact, the third time relay normally open contact and a first auxiliary switch are sequentially connected after the first control button and the seventh contactor normally open contact are connected in parallel, and the first auxiliary switch is connected with the second fuse; the first unit LCU is connected with the first control button.
The switching-on loop comprises a second control button and a ninth contactor normally open contact connected in parallel with the second control button, the ninth contactor normally open contact, the fourth time relay normally closed contact, the tenth contactor normally closed contact, the fourth time relay normally open contact and a second auxiliary switch are sequentially connected after the second control button and the ninth contactor normally open contact are connected in parallel, and the second auxiliary switch is connected with the second fuse; and the second unit LCU is connected with the second control button.
The utility model has the following advantages: the utility model provides a modified isolator electric operating mechanism, improves isolator divide-shut brake operation back electric operating mechanism's operation return circuit, guarantees that the motor also can normally stop when the cam can't compress tightly travel switch divide-shut brake contact, provides dual guarantee for the operating mechanism motor, has prevented that the motor of damage leads to the unable normal condition of separating brake or closing a floodgate not in place, has avoided the emergence of incident. At the moment, the operating mechanism can still normally realize the opening and closing function, the fault of the operating mechanism can be checked and processed by a machine selection machine after the follow-up power failure, and the economic loss caused by the need of immediately processing the fault by the power failure is avoided. When the motor can not compress the travel switch contact through the cam and stop, an audible and visual alarm signal is sent out to remind operation and maintenance personnel that the operation mechanism breaks down, and the operation and maintenance personnel can maintain the operation mechanism when the equipment has power failure next time.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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 a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the detailed description of the embodiments of the present application provided below in connection with the appended drawings is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application. The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the present invention relates to AN improved electric operating mechanism for a disconnecting switch, wherein the components indicated by the prefixes 4D and 8D in the drawing are all terminals, the numbers 1 to 23 also indicate terminals, HC and FC indicate contactors, 1AN, 2AN and 3AN indicate control buttons, and 1RD, 2RD and 3RD indicate fuses.
The device specifically comprises an audible and visual alarm loop, a motor main loop and an isolating switch operation loop; the motor main loop is connected with a first auxiliary contact and a second auxiliary contact of an electric isolating switch GL, and the acousto-optic alarm loop is connected on the first auxiliary contact and the second auxiliary contact of the electric isolating switch GL and is connected with the motor main loop in parallel; one end of the isolating switch operation loop is connected to a second auxiliary contact of the electric isolating switch GL through a change-over switch XK, and the other end of the isolating switch operation loop is connected to a first auxiliary contact of the electric isolating switch GL.
Further, the motor main circuit comprises a single-phase series motor Zd, a first end of the single-phase series motor Zd is connected with a normally open contact of a first contactor in series, a second end of the single-phase series motor Zd is connected with a normally open contact of a second contactor in series, the normally open contact of the first contactor and the normally open contact of the second contactor are connected with one end of a first fuse, the other end of the first fuse is connected with one end of a generator outlet circuit breaker, and the other end of the generator outlet circuit breaker is connected with a second auxiliary contact of the electric isolating switch GL; the first end of the single-phase series excited machine ZD is connected with a normally open contact of a third contactor in parallel, the second end is connected with a normally open contact of a fourth contactor in parallel, the normally open contact of the third contactor and the normally open contact of the fourth contactor are connected with one end of an auxiliary contact SQ of the single-phase series excited machine, the other end of the auxiliary contact SQ of the single-phase series excited machine is connected with a normally open contact of a fifth contactor and a normally open contact of a sixth contactor in parallel, the normally open contact of the fifth contactor and the normally open contact of the sixth contactor are connected with a second fuse, and the second fuse is connected with a first auxiliary contact of the electric isolating switch GL.
Furthermore, the operation loop of the isolating switch comprises an opening loop and a closing loop, one end of the opening loop and one end of the closing loop are connected with the second fuse, and the other end of the opening loop and the other end of the closing loop are connected with the second port of the change-over switch XK.
Furthermore, a fourth port of the change-over switch XK is connected with a first unit LCU and a second unit LCU, the first unit LCU is connected into the opening circuit, the second unit LCU is connected into the closing circuit, and the two units LCUs are connected with a normally open contact of a contactor in parallel; and the first port and the third port of the change-over switch XK are sequentially connected with a third control button and a third fuse, and the third fuse is connected with the first fuse.
The opening circuit comprises a first control button and a seventh contactor normally open contact connected in parallel with the first control button, the eighth contactor normally open contact, the third time relay normally closed contact, the eighth contactor normally closed contact, the third time relay normally open contact and a first auxiliary switch are sequentially connected after the first control button and the seventh contactor normally open contact are connected in parallel, and the first auxiliary switch is connected with the second fuse; and the first unit LCU is connected with the first control button.
An electrified delay time relay KT1 is added in a closing loop of an isolating switch operation loop, a normally closed contact of KT1 is added in the closing loop, and delay is set to t1+1.5s for the electrified delay time relay KT1 (t1 is closing time of the isolating switch). If the travel switch closing contact HXK can be normally disconnected after the isolating switch is closed in place, namely the cam can press the travel switch closing contact, the closing operation loop is powered off, the motor of the electric operating mechanism normally stops, the closing time of the isolating switch is t1, and the typical delay time relay KT1 cannot act. If the travel switch closing contact HXK can not be normally disconnected after the isolating switch is closed in place, namely the cam can not press the travel switch contact due to deviation, the operation loop is still electrified, the motor can not stop at the moment and can continuously keep running, when the motor runs to t1+1.5s, the electrified delay time relay KT1 acts, the KT1 normally closed contact is disconnected, the closing operation loop is powered off, the operation mechanism motor stops running, and therefore the motor is protected from running and being choked and damaged.
Furthermore, the closing circuit comprises a second control button and a ninth contactor normally open contact connected in parallel with the second control button, the tenth contactor normally open contact, a fourth time relay normally closed contact, a tenth contactor normally closed contact, a fourth time relay normally open contact and a second auxiliary switch are sequentially connected after the second control button and the ninth contactor normally open contact are connected in parallel, and the second auxiliary switch is connected with the second fuse; and the second unit LCU is connected with the second control button.
An electrified delay time relay KT2 is added in a separating brake loop of an isolating switch operation loop, a normally closed contact of KT2 is added in the separating brake loop, and delay is set to t2+1.5s for the electrified delay time relay KT2 (t2 is separating brake time of the isolating switch). If the travel switch opening contact FXK can be normally disconnected after the disconnecting switch is opened in place, namely the cam can press the travel switch opening contact, the opening operation loop is powered off, the motor of the electric operating mechanism is normally stopped, the disconnecting switch opening time is t2, and the typical delay time relay KT2 can not act. If the travel switch opening contact FXK can not be normally disconnected after the isolating switch is in place, namely the cam can not press the travel switch contact due to deviation, the operation loop is still electrified, the motor can not stop at the moment, the operation can be continuously kept, when the motor operates to t2+1.5s, the electrified delay time relay KT2 acts, the KT2 normally closed contact is disconnected, the opening operation loop is powered off, the motor of the operation mechanism stops operating, and therefore the motor is protected from being continuously operated and being labored and damaged.
Furthermore, the sound-light alarm circuit comprises a first time relay, a second time relay normally-open contact and a first holding relay normally-open contact which are connected in parallel, one end of the circuit after parallel connection is connected with the second fuse, and the other end of the circuit after parallel connection is sequentially connected with a buzzer, a fault indicator lamp and the first holding relay normally-closed contact; the first holding relay normally closed contact is connected with the first fuse.
When the electrified delay time relay in the isolating switch operation loop acts, the condition that the cam on the motor shaft of the operating mechanism cannot press the opening and closing contacts of the travel switch is indicated, and the acousto-optic alarm loop can send out an acousto-optic alarm to serve as a prompt, so that the follow-up machine selection processing of operators is facilitated.
When the device is in normal operation, KT1, KT2 and BJ in the acousto-optic alarm loop are all open circuits, and at the moment, the acousto-optic alarm is silent. When the electrified delay time relay in the isolating switch operation loop acts KT1 or KT2, the normally open contact KT1 or KT2 in the audible and visual alarm loop is closed, and the audible and visual alarm loop is a channel at the moment and sends an audible and visual alarm signal. Keep relay BJ electrified simultaneously, make the normally open contact BJ closure of hold relay BJ, KT1 or KT2 action when circular telegram type time delay relay action in the isolator operating circuit accomplishes the back, its place return circuit loses the electricity, normally open contact KT1 or KT2 disconnection in the audible and visual alarm return circuit, nevertheless because hold relay BJ's normally open contact BJ closure, make bee calling organ HA1 continuously send the sound and fault indicator RD lasts luminous, in order to continuously send alarm signal, remind fortune dimension personnel.
The utility model improves the operation loop of the electric operating mechanism of the isolating switch, adds the electrified time delay relay to carry out double protection on the electric operating mechanism of the isolating switch, and simultaneously adds the sound-light alarm loop to prompt personnel to have faults.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the utility model is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (7)
1. An improved electric operating mechanism of a disconnecting switch is characterized in that: the device comprises an audible and visual alarm loop, a motor main loop and an isolating switch operation loop; the motor main loop is connected with a first auxiliary contact and a second auxiliary contact of an electric isolating switch GL, and the acousto-optic alarm loop is connected on the first auxiliary contact and the second auxiliary contact of the electric isolating switch GL and is connected with the motor main loop in parallel; one end of the isolating switch operation loop is connected to a second auxiliary contact of the electric isolating switch GL through a change-over switch XK, and the other end of the isolating switch operation loop is connected to a first auxiliary contact of the electric isolating switch GL.
2. An improved electrical operating mechanism for a disconnector according to claim 1, characterized in that: the motor main loop comprises a single-phase series motor ZD, the first end of the single-phase series motor ZD is connected with a normally open contact of a first contactor in series, the second end of the single-phase series motor ZD is connected with a normally open contact of a second contactor in series, the normally open contact of the first contactor and the normally open contact of the second contactor are connected with one end of a first fuse, the other end of the first fuse is connected with one end of a generator outlet breaker, and the other end of the generator outlet breaker is connected with a second auxiliary contact of the electric isolating switch GL; the first end of the single-phase series excited motor ZD is connected with a normally open contact of a third contactor in parallel, the second end is connected with a normally open contact of a fourth contactor in parallel, the normally open contact of the third contactor and the normally open contact of the fourth contactor are connected with one end of an auxiliary contact SQ of the single-phase series excited motor, the other end of the auxiliary contact SQ of the single-phase series excited motor is connected with a normally open contact of a fifth contactor and a normally open contact of a sixth contactor in parallel, the normally open contact of the fifth contactor and the normally open contact of the sixth contactor are connected with a second fuse, and the second fuse is connected with a first auxiliary contact of the electric isolating switch GL.
3. An improved electrical operating mechanism for a disconnector according to claim 2, characterized in that: the acousto-optic alarm circuit comprises a first time relay, a second time relay normally-open contact and a first holding relay normally-open contact which are mutually connected in parallel, one end of the acousto-optic alarm circuit after being connected in parallel is connected with the second fuse, and the other end of the acousto-optic alarm circuit after being connected in parallel is sequentially connected with a buzzer, a fault indicator lamp and the first holding relay normally-closed contact; the first holding relay normally closed contact is connected with the first fuse.
4. An improved electrical operating mechanism for a disconnector according to claim 2, characterized in that: the isolating switch operation loop comprises a switching-off loop and a switching-on loop, one end of the switching-off loop and one end of the switching-on loop are connected with the second fuse, and the other end of the switching-off loop and the other end of the switching-on loop are connected with the second port of the change-over switch XK.
5. An improved electrical operating mechanism for a disconnector according to claim 4, characterized in that: the fourth port of the change-over switch XK is connected with a first unit LCU and a second unit LCU, the first unit LCU is connected into the opening circuit, the second unit LCU is connected into the closing circuit, and the two units LCUs are connected with a normally open contact of a contactor in parallel; and the first port and the third port of the change-over switch XK are sequentially connected with a third control button and a third fuse, and the third fuse is connected with the first fuse.
6. An improved electrical operating mechanism for a disconnector according to claim 5, characterized in that: the opening circuit comprises a first control button and a seventh contactor normally open contact connected in parallel with the first control button, the eighth contactor normally open contact, the third time relay normally closed contact, the eighth contactor normally closed contact, the third time relay normally open contact and a first auxiliary switch are sequentially connected after the first control button and the seventh contactor normally open contact are connected in parallel, and the first auxiliary switch is connected with the second fuse; the first unit LCU is connected with the first control button.
7. An improved electrical operating mechanism for a disconnector according to claim 5, characterized in that: the switching-on loop comprises a second control button and a ninth contactor normally open contact connected in parallel with the second control button, the ninth contactor normally open contact, the fourth time relay normally closed contact, the tenth contactor normally closed contact, the fourth time relay normally open contact and a second auxiliary switch are sequentially connected after the second control button and the ninth contactor normally open contact are connected in parallel, and the second auxiliary switch is connected with the second fuse; and the second unit LCU is connected with the second control button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220072581.XU CN217009033U (en) | 2022-01-12 | 2022-01-12 | Improved electric operating mechanism of isolating switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220072581.XU CN217009033U (en) | 2022-01-12 | 2022-01-12 | Improved electric operating mechanism of isolating switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217009033U true CN217009033U (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220072581.XU Active CN217009033U (en) | 2022-01-12 | 2022-01-12 | Improved electric operating mechanism of isolating switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217009033U (en) |
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2022
- 2022-01-12 CN CN202220072581.XU patent/CN217009033U/en active Active
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