WO2011097773A1

WO2011097773A1 - Interlocking device of electronic type high-voltage breaker and high-voltage isolation switch

Info

Publication number: WO2011097773A1
Application number: PCT/CN2010/000827
Authority: WO
Inventors: 万家盛
Original assignee: 湖北盛佳电器设备有限公司
Priority date: 2010-02-10
Filing date: 2010-06-11
Publication date: 2011-08-18
Also published as: CN101789321A; CN101789321B

Abstract

An interlocking device of an electronic type high-voltage breaker and a high-voltage isolation switch. The interlocking device comprises: a high-voltage breaker body (a) which has an outgoing line terminal of a phase line (d) to connect or disconnect the phase line (d); and a high-voltage isolation switch body (b) which is connected with the high-voltage breaker body (a) and has an incoming line connecting block of the phase line (d). The interlocking device also comprises: a control unit (e) which detects whether current flows through the circuit of the high-voltage breaker body (a) and/or the high-voltage isolation switch body (b) and transmits a control signal indicating a detected state; and an interlocking unit (c) which receives the control signal and generates interference with the state change of the high-voltage isolation switch body (b). Consequently, the high-voltage isolation switch body (b) does not perform connection or disconnection operation when the high-voltage breaker is in ON state.

Description

Electronic high voltage circuit breaker and high voltage isolation switch interlocking device

The invention relates to a high voltage electric power safety device, in particular to an electronic high voltage circuit breaker and a high voltage isolating switch interlocking device. Background technique

The high-voltage isolating switch used in high-voltage power equipment on high-voltage lines is an important device with obvious segmentation gap. Therefore, it is mainly used to isolate high-voltage power supply, ensure safe maintenance, and can cut off a certain small current. It does not have a special arc extinguishing device, so it is not allowed to cut off the normal composite power supply, and it cannot be used to cut off the short circuit current. Because the isolating switch has a significant segmented clearance, it is typically used with high voltage circuit breakers.

According to the place where the high-voltage isolating switch is used, the high-voltage isolating switch can be divided into indoor and outdoor categories. When operating the isolating switch, attention should be paid to the sequence of operation. In particular, it should be noted that the operation of the high-voltage isolating switch can be realized only after the high-voltage circuit breaker is disconnected.

However, during some equipment configuration and operation, the power department staff may not use a safe operation sequence for some reason, which may cause danger, that is, when the high voltage circuit breaker is not in an open state, The high-voltage isolating switch is disconnected, thereby generating high-voltage arc light, which is extremely harmful to the electrical equipment and the personal safety of the operator.

At the same time, the existing high-voltage circuit breaker can not handle the short-circuit fault condition of the power line from the function, so it is easy to burn out the corresponding power equipment; and if the short-circuit fault is not eliminated, if the unauthorized switch is not given, The electrical equipment and the high voltage circuit breaker itself cause great damage and also affect the safety of the electricity.

In view of the above drawbacks, the creator of the present invention finally obtained the creation after a long period of research and practice. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic high voltage circuit breaker and a high voltage disconnecting switch interlocking device for overcoming the above technical drawbacks.

In order to achieve the above object, the technical solution adopted by the present invention is to provide an electronic high voltage circuit breaker and a high voltage isolation switch interlocking device, which comprises:

Confirmation a high voltage circuit breaker body having a phase end of the phase line for realizing the breaking and closing of the phase line;

a high voltage isolating switch body connected to the high voltage circuit breaker body and having a phase line incoming connection block, further comprising:

a control unit configured to detect whether a current flowing through the line of the high voltage circuit breaker body and/or the high voltage isolation switch body is present, and send a control signal to a power unit when a current flows;

An interlocking arm connected to the output end of the power portion, and the power output of the power portion causes the interlocking arm to interfere with a state change of the high voltage isolating switch body; thereby achieving When the high voltage circuit breaker is in the path state, the high voltage isolating switch body cannot generate the closing and breaking action.

Compared with the prior art, the invention has the advantages that: the correct operation sequence of the high voltage circuit breaker and the high voltage isolating switch is ensured, the safety of the operation is improved, and the short circuit fault of the high voltage line can be detected, and the line can be disconnected immediately, and The self-locking of the state of the circuit breaker can provide self-locking safety, and the information transmission by the communication unit can realize the intensive management of power consumption, which helps to eliminate the short-circuit fault in the first time. DRAWINGS

1 is a functional block diagram of an electronic high-voltage circuit breaker and a high-voltage isolating switch interlocking device according to the present invention; FIG. 1A is a schematic view showing the external structure of a high-voltage circuit breaker body in an electronic high-voltage circuit breaker and a high-voltage isolating switch interlocking device according to the present invention;

1B is a cross-sectional view showing the insulating vacuum portion of the high voltage circuit breaker body of the electronic high voltage circuit breaker and the high voltage disconnecting switch interlocking device of the present invention;

1C is a cross-sectional view showing the breaking mechanism of the high voltage circuit breaker body of the electronic high voltage circuit breaker and the high voltage disconnecting switch interlocking device of the present invention;

1D is an exploded perspective view showing the breaking mechanism of the high voltage circuit breaker body of the electronic high voltage circuit breaker and the high voltage disconnecting switch interlocking device of the present invention;

2A is a schematic view showing a conductive state of an embodiment of an electronic high-voltage circuit breaker and a high-voltage isolating switch interlocking device according to the present invention;

2B is a schematic structural view of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device according to the first embodiment of the present invention; 2C is a schematic structural view of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device according to the first embodiment of the present invention;

2D is a schematic view showing an open state of an embodiment of an electronic high-voltage circuit breaker and a high-voltage isolating switch interlocking device according to the present invention;

3A is a schematic view showing a second embodiment of an electronic high-voltage circuit breaker and a high-voltage isolating switch interlocking device according to the present invention;

3B is a schematic view showing the disconnected state of the second embodiment of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device of the present invention;

4A is a non-self-locking state diagram of a first embodiment of a self-locking mechanism in an electronic high-voltage circuit breaker and a high-voltage disconnecting switch interlocking device according to the present invention;

4B is a self-locking state diagram of the first embodiment of the self-locking mechanism of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device of the present invention;

5A is a non-self-locking state diagram of a second embodiment of a self-locking mechanism in an electronic high-voltage circuit breaker and a high-voltage disconnecting switch interlocking device according to the present invention;

5B is a self-locking state diagram of the second embodiment of the self-locking mechanism of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device of the present invention;

6A is a non-self-locking state diagram of a third embodiment of a self-locking mechanism in an electronic high-voltage circuit breaker and a high-voltage disconnecting switch interlocking device according to the present invention;

6B is a self-locking state diagram of the third embodiment of the self-locking mechanism in the electronic high-voltage circuit breaker and the high-voltage disconnecting switch interlocking device of the present invention;

7A is a non-self-locking state diagram of a fourth embodiment of a self-locking mechanism in an electronic high-voltage circuit breaker and a high-voltage disconnecting switch interlocking device according to the present invention;

7B is a self-locking state diagram of the fourth embodiment of the self-locking mechanism of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device of the present invention;

8A is a non-self-locking state diagram of a fifth embodiment of a self-locking mechanism in an electronic high-voltage circuit breaker and a high-voltage isolating switch interlock device according to the present invention;

8B is a self-locking state diagram of the fifth embodiment of the self-locking mechanism of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device of the present invention;

9 is a schematic diagram of a short circuit processing circuit in an electronic high voltage circuit breaker and a high voltage isolation switch interlock device according to the present invention; 10 is a schematic diagram of a control circuit of Embodiment 1 of an electronic high-voltage circuit breaker and a high-voltage isolating switch interlock device according to the present invention;

Figure 11 is a schematic view showing the control circuit of the second embodiment of the electronic high voltage circuit breaker and the high voltage disconnecting switch interlocking device of the present invention. detailed description

The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings. Please refer to FIG. 1 , which is a functional block diagram of an electronic high-voltage circuit breaker and a high-voltage disconnecting switch interlocking device, and the electronic high-voltage circuit breaker and high-voltage isolating switch interlocking device, comprising: a high-voltage circuit breaker The body _a has a line end of the phase line for realizing the breaking and closing of the phase line;

a high voltage isolating switch body b connected to the high voltage circuit breaker body a and having a phase line d incoming line connecting block, which is a configuration of the existing high voltage circuit breaker and the high voltage isolating switch; The key to interlocking, including:

a control unit e is configured to detect whether a current flows through at least one of the high voltage circuit breaker body and the high voltage isolation switch body. The detecting method may be: setting a sampling device to see if a current flows. It is also possible to monitor the operating state of the high voltage circuit breaker body a, because if the high voltage circuit breaker body a acts, it can be clearly determined whether it is line cut or conduction; The determination is to determine whether the high voltage circuit breaker body a is in conduction or in an open state, thereby generating a control signal to an interlocking unit c, the interlocking unit receiving the control signal, and The state change of the high-voltage isolating switch body generates interference; the interference here means that when the high-voltage circuit breaker is in the path state, the high-voltage isolating switch body cannot generate the closing and breaking action, and when the high-voltage circuit breaker is in the open state The high-voltage isolating switch body cannot generate a closing and breaking action.

The interlocking unit includes:

a power unit for receiving the control signal and outputting a corresponding action, wherein the power unit may be a motor or an electromagnet;

An interlocking arm connected to the power portion for coupling or disengaging with the moving structure of the high-voltage isolating switch, so as to achieve when the high-voltage circuit breaker is in a path state The high-voltage isolating switch body cannot generate a closing and breaking action. The present embodiment is described in detail from the structure of the high-voltage circuit breaker body and the structure of the high-voltage isolating switch body, so that those skilled in the art can more clearly understand how the invention is implemented.

Please refer to FIG. 1A , which is a schematic diagram of the external structure of the high voltage circuit breaker body in the electronic high voltage circuit breaker and the high voltage isolating switch interlock device of the present invention; the high voltage circuit breaker body, that is, the access and output of the high voltage circuit line The on-off control is implemented, wherein the high-voltage circuit breaker body comprises: a casing 10, wherein the casing 10 is provided with at least one insulating vacuum portion 2, and since the high-voltage line is usually three-phase, there are usually three The insulating vacuum portion 2, the outer end of the insulating vacuum portion 2 is respectively provided with an outgoing end 21 connected to an external line and an incoming end 22; a breaking mechanism disposed in the housing for achieving a high voltage The disconnecting and closing action of the circuit breaker includes: a power unit and an action unit.

Referring to FIG. 1B, it is a cross-sectional view of an insulating vacuum portion of a high voltage circuit breaker body in an electronic high voltage circuit breaker and a high voltage disconnecting switch interlocking device; the outlet end 21 and the incoming end 22 are insulated as described The vacuum portion 2 corresponds to a movable contact block 24 and a static contact block 23 respectively; and has a circuit board 32 on which a circuit control portion is provided. Of course, this is merely an embodiment, and may be placed by a person skilled in the art according to actual needs. Inside the housing.

1C and FIG. 1D, which are respectively a cross-sectional view of the breaking mechanism of the high voltage circuit breaker body in the electronic high voltage circuit breaker and the high voltage isolating switch interlocking device, and the electronic high voltage circuit breaker and the high voltage isolating switch interlocking device of the present invention. An exploded perspective view of the breaking mechanism of the medium-high voltage circuit breaker body; wherein, when the action unit in the breaking mechanism is triggered, the closing action of the movable contact block 24 and the static contact block 23 is realized or Is the breaking action, and thus the conduction or disconnection of the line, because the connection and disconnection requirements of the high-voltage line are completed in an instant, so a large amount of energy is required; and the power unit is used for the action The unit provides the power to instantaneously disconnect and close.

The action unit includes:

a main linkage rod 40, which is longitudinally disposed in the housing 10 for elongating a longitudinal movement, and a support sliding portion is disposed between the bottom portion of the housing, and the sub-linking members 41 are three groups ( Corresponding to the three-phase), the main linkage rod 40 is slidably connected to the main linkage rod 40. The specific embodiment may be that the sub-linkage member 41 is provided with a curved chute, and the main linkage rod 40 is fixed with a sliding rod. The sliding rod 41 can slide in the arc-shaped sliding groove of the sub-linking member 41, so that when the main connecting rod 40 moves longitudinally, the sub-linking member 41 is pushed up to make the insulation A portion of the inside of the vacuum portion 2 generates an up and down motion, thereby pushing or breaking the movable contact block 24 and the static contact block 23. The power unit is an elastic energy storage mechanism, and includes:

a crank handle for swaying energy storage of the worker during use (see FIG. 1), a two-stage gear transmission structure, the crank handle is combined with the primary gear 43, and the rocker is The sway of the shank rotates the primary gear 43; a sway block 44 is coupled to the secondary gear 42 and the upper end is coupled to the primary linkage rod 40, the secondary gear 42 being substantially The number of teeth is much larger than the number of teeth of the primary gear 43; an eccentric 46 that is axially coupled to the oscillating block 44; as a spring piece (not shown) inside the oscillating block 44 is wound, thereby rotating; a top block (not shown) abutting against a side edge of the swinging block 44 so that the swinging block 44 does not rotate due to the elastic restoring force of the spring piece; at least one first return spring 45. Here, a spring is taken as an example, which is connected to the eccentric 46 and is stretched as the eccentric 46 rotates; at least one second return spring 471, 472, here two springs are taken as an example , respectively, with the housing 10 described End connection through the primary link and the other end of the linkage rod 40 is connected.

Please refer to FIG. 2A , which is a schematic diagram of a conductive state of an embodiment of an electronic high-voltage circuit breaker and a high-voltage isolating switch interlocking device according to the present invention, wherein the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device are in the above The high-voltage isolating switch body is combined with a high-voltage isolating switch body, and the high-voltage isolating switch body is a switch capable of achieving basic high-voltage isolation (such as an isolating knife); the high-voltage isolating switch body includes:

The conductive arm 71 is disposed according to the number of phase lines, and one end thereof is provided with a rotating shaft and is connected to the phase line of the access, and the other end corresponds to the incoming connecting block 21, and the conductive arm 71 is wound around the conductive arm 71. The rotating shaft reciprocates, so that the conductive arm 71 is connected and separated from the incoming connecting block 21;

Each of the conductive arms 71 is connected to a pulling rod 72, and the pulling arm 72 drives the conductive arm 71 to reciprocate around the rotating shaft;

a linkage shaft 74 is disposed on a first support plate and a second support plate, and is axially disposed with a pulling end 73 disposed according to the number of phase lines, and each of the pulling ends 73 and one of the pulling ends The rods 74 are connected;

A swinging handle 75 is disposed at one end of the linkage shaft 74 for closing and separating the high voltage isolating switch. In the first embodiment, the number of the phase lines is three, and the number of the conductive arms 71 and the linkage shaft 74 can be determined to be three. The other end of the linkage shaft 74 is provided with a notch 741.

The interlocking arm 76-end corresponds to the missing slot 741, . The power unit described in the first embodiment adopts a motor 70, and the motor 70 outputs a torque, and the interlocking arm is fixedly connected to the motor output shaft, and the rotation of the motor 70 is driven. The interlocking arm rotates. The method further includes: a second limit detecting device, configured to detect whether the interlocking arm is combined with the incoming connecting block, and generate a position state after combining; the second limit detecting device may In the embodiment, the stroke switch is taken as an example, and the stroke switch is two, that is, the third stroke switch S3 and the fourth stroke switch S4 are respectively disposed on a carrier plate 701. For indicating the state in which the interlocking arm is embedded in the notch 741 or the separated state; the interlocking arm is provided with a touch portion 761, that is, the interlocking arm is When the operation of the motor rotates, the touch portion is swung, and when the stroke switch is touched, the interlocking arm is inserted into the missing slot 741 or the separated state; Outputting to the control unit, thereby generating a timed action signal at the control unit; when the interlocking arm is embedded in the slot, the third limit switch is closed The fourth itinerary Guan is disconnected.

Please refer to FIG. 2B and FIG. 2C , which are respectively a schematic diagram of the structure of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device in the conduction and disconnection state of the housing, and the main linkage in the housing. A lever block 401 is disposed on the rod 40, and a first limit detecting device is further disposed in the housing for detecting whether the high voltage circuit breaker body is in an open state or a conductive state, thereby generating two different positions. The first limit detecting device may be a travel switch or a position sensor. In the embodiment, the travel switch is taken as an example, and the travel switch is two first travel switches S1 and a two-stroke switch S2, wherein the main linkage rod moves longitudinally, so that the toggle block causes one of the stroke switches to be triggered, thereby generating a position status signal indicating an open circuit and a conduction state; that is, when the conduction state is S2 is closed, and S1 is closed when the circuit is open. Outputting a position status signal to the control unit, thereby generating a timing action signal at the control unit, as shown in FIG. 2D, which is an interlock of the electronic high voltage circuit breaker and the high voltage isolation switch of the present invention. Embodiment 1 of the device is a schematic diagram of a disconnected state; when the main linkage rod generates a longitudinal motion, the high voltage circuit breaker body generates a breaking action, and the toggle block touches the first time switch S1 to close The second stroke switch S2 is opened to trigger the motor operation, the motor rotation causes the interlocking arm to rotate, thereby separating from the missing slot, and triggering the fourth limit switch , causing it to be in a closed state, so that the control unit stops the motor from rotating, and the third stroke switch is in an open state. When the main linkage rod generates reverse longitudinal movement again, the high voltage circuit breaker body generates an on state, and the toggle block touches the second stroke switch S2 to close, the first stroke switch S1 is opened to trigger the reverse action of the motor, and the rotation of the motor drives the interlocking arm to rotate in the opposite direction, so that the interlocking arm is engaged with the slot, and the The third stroke switch S3 is brought into a closed state, so that the control unit stops the motor from rotating, and the fourth stroke switch is in an on state (as shown in FIG. 2A).

Please refer to FIG. 3A and FIG. 3B , which are schematic diagrams of the second conductive state and the open circuit state of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlocking device respectively according to the present invention; the difference from the first embodiment is that The power part is an electromagnet, and the armature end is provided with an interlocking arm (of course, the armature itself can also be used as an interlocking arm), which corresponds to the notch 743 (hole) located on the linkage shaft; The interlocking arm is sleeved with a touch arm corresponding to the third travel switch S3 and the fourth travel switch S4 respectively. FIG. 3A is an interlock state diagram, and the high voltage circuit breaker body is in an on state.

When the main linkage rod generates a longitudinal movement, the high voltage circuit breaker body generates a breaking action, and the first moving switch S1 is closed, and the second stroke switch S2 is opened, thereby Triggering the action of the electromagnet, causing the interlocking arm to move downward to be separated from the notch 743 (hole), and the touch arm touches the fourth switch to make In the closed state, the control unit stops the electromagnet from moving, and the third stroke switch is in the off state. That is, the unlock state diagram of Fig. 3B, at which time the high voltage circuit breaker body is in an open state.

When the main linkage rod generates reverse longitudinal movement again, the high voltage circuit breaker body generates an on state, and the toggle block touches the second stroke switch S2 to close, the first stroke switch S1 is opened, thereby triggering the reverse action of the electromagnet to drive the interlocking arm to move upward, so that the interlocking arm extends into the 743 (hole), and the third stroke is touched The switch S3 is brought into a closed state, so that the control unit stops the electromagnet from being stopped, and the fourth stroke switch is in an on state (as shown in Fig. 3A).

In order to achieve the short circuit self-locking problem in the high voltage circuit, it also includes:

a short circuit detecting unit for detecting whether a phase fault occurs in the phase line of the high voltage circuit breaker body, and generating a breaking signal when a short circuit fault occurs;

a short-circuit action triggering mechanism, which is connected to the breaking mechanism in the high-voltage circuit breaker body, and triggers the breaking mechanism to generate a breaking action when receiving the breaking signal;

A short circuit self-locking mechanism that prevents the breaking mechanism from being automatically reset. Please refer to FIG. 9 , which is a schematic diagram of a short circuit processing circuit in the electronic high voltage circuit breaker and the high voltage isolation switch interlock device of the present invention. The short circuit detecting unit includes:

a current collecting sub-unit disposed on each of the phase lines for collecting current signals on each phase line; the current collecting sub-unit described herein uses three current transformers on the phase line, of course The manganese copper sheet 31 as shown in FIG. 1B can also be used as a current collecting subunit; its main purpose is still to convert the detected current signal into a voltage signal; as shown in FIG. 1D, the short circuit detection on the circuit board 32 is shown. The unit can be powered by battery 33 as an embodiment. The short-triggering _action: a mechanism for the electromagnet 51, a trigger terminal block whose top end of the armature 441 corresponds to the end of the armature 441 against the top end of the trigger, the The top block is separated from the wobble block 44, so that under the action of the elastic restoring force of the spring piece and the second return springs 471, 472 being pulled up, the main link bar 40 generates a longitudinal action, thereby The action from the linkage 41 is caused to finally realize the breaking action of the high voltage circuit breaker.

An inrush current controller, respectively connected to the current collecting subunit, for comparing a current signal of any phase line collected with a threshold, and outputting a trigger signal when a short circuit occurs; The electromagnetic coil of the short-circuit action triggering mechanism electromagnet 51 is connected to the inrush current controller, and the armature is generated by receiving the trigger signal.

For the present invention, it is very meaningful to provide the short-circuit self-locking mechanism. Due to his existence, when the short-circuit fault occurs, the high-voltage circuit breaker does not close immediately, and must be unlocked. The action of closing, thus improving safety. To this end we have designed five examples.

Please refer to FIG. 4A and FIG. 4B , which are respectively a non-self-locking state diagram of the first embodiment of the short-circuit self-locking mechanism in the electronic high-voltage circuit breaker and the high-voltage disconnecting switch interlocking device of the present invention; and the mechanical high-voltage circuit breaker of the present invention; And a self-locking state diagram of the short-circuit self-locking mechanism in the interlocking device of the high-voltage isolating switch; the short-circuit self-locking mechanism of the first type includes:

a topping block 61; a return spring 62 sleeved on the ejector block 61; a receiving groove 64, the ejector block 61 and the return spring 62 are disposed therein, and The ejector block 61 is slidable in the accommodating groove 64, and the accommodating groove 64 is provided with a guiding groove corresponding to the armature end 512; when the electromagnet 51 is triggered The armature end 511 extends against the trigger end 441 of the top block, so that the armature end 512 moves inward along the guide groove, and the ejecting block 61 is reset. The spring 62 projects downwardly so that one side thereof abuts against the end surface of the armature end 512, so that the armature end 511 can only be in contact with the top block The top state of the hair end 441;

The ejector block has an unlocking end, and only the artificially pushing the unlocking end, so that the ejector block is retracted, can unlock the armature.

Please refer to FIG. 5A and FIG. 5B , which are respectively a non-self-locking state diagram of the second embodiment of the short circuit self-locking mechanism in the electronic high voltage circuit breaker and the high voltage disconnecting switch interlocking device of the present invention; and the mechanical high voltage circuit breaker of the present invention. And the self-locking state diagram of the second embodiment of the short-circuit self-locking mechanism in the high-voltage isolating switch interlocking device; the short-circuiting self-locking mechanism of the second type includes:

a limiting block 61, which can be embedded in the recessed groove provided by the armature end 511, and the armature end 511 is provided with two recessed grooves 5111, wherein one of the engaging slots 5111 corresponds to a normal state, and the other corresponds to a triggering state, the limiting block 61 has a slope, which can only move the armature 51 in a single direction;

a return spring 63 disposed between the limiting block 61 and the housing 10 for realizing resetting of the limiting block, that is, the limit is caused by the extension of the armature end 511 The block 61 is moved up to compress the return spring 63, and when the slot 5111 is formed, the limiting block 61 is inserted therein;

A pull rod 62 is fixed to the limit block 61, and only the pull rod 6 ^{2 is} lifted, so that the limit block 61 is retracted, so that the unlocking of the armature can be realized.

Please refer to FIG. 6A and FIG. 6B , which are respectively a non-self-locking state diagram of the third embodiment of the short-circuit self-locking mechanism in the electronic high-voltage circuit breaker and the high-voltage isolating switch interlock device of the present invention; and the mechanical high-voltage circuit breaker of the present invention; And the self-locking state diagram of the third embodiment of the short-circuit self-locking mechanism in the high-voltage isolating switch interlocking device; the third short-circuiting self-locking mechanism includes:

a guiding groove body 61; similar to a "three-way" in the field of plumbing engineering, which is fixed to the casing 10;

a triggering block 66 is disposed in the guiding slot 61 and movable therein, and one end of the triggering block 66 is configured to abut the triggering end 441 of the top block, wherein The trigger block is provided with * a slot 661;

a first return spring 65 disposed between the guide slot 61 and the trigger block 66, when one end of the trigger block 66 abuts the trigger end 441 of the top block , which is compressed, and when the armature end 511 is retracted, the reset of the trigger block 66 can be implemented;

a limiting block 62, which can be embedded in the recess 661 provided by the trigger block 66; a second return spring 64 disposed between the limiting block 61 and the housing 10 for resetting the limiting block 61; that is, since the armature end 511 is extended, The limiting block 61 is moved up to compress the return spring 64, and when the slot 661 is present, the limiting block 61 is inserted therein;

A pull rod 63 is fixed to the stop block 62, and only the pull rod 63 is manually lifted, so that the limit block 62 is retracted, so that the unlocking of the armature can be realized.

Please refer to FIG. 7A and FIG. 7B , which are respectively a non-self-locking state diagram of the fourth embodiment of the short-circuit self-locking mechanism in the electronic high-voltage circuit breaker and the high-voltage isolating switch interlock device of the present invention; and the mechanical high-voltage circuit breaker of the present invention; And the self-locking state diagram of the fourth embodiment of the short-circuit self-locking mechanism in the high-voltage isolating switch interlocking device; the fourth-mentioned short-circuiting self-locking mechanism includes:

a guiding groove body 61, the inner bottom end of the guiding groove body 61 is provided with a fitting groove 611;

An L-shaped trigger block 64 is disposed in the guiding groove body 61, a first end thereof is corresponding to the triggering end 441 of the top block, and a lower end is provided with a protrusion, The corresponding slot 611 corresponds to and can be embedded therein;

a first return spring 65 disposed between the guiding groove body 61 and the first end of the L-shaped trigger block 64;

a second return spring 63 disposed between the second end of the L-type trigger block 64 and the housing 10 for effecting resetting of the L-type trigger block 63; that is, due to the armature end After the protrusion 511 is extended, the L-shaped trigger block 64 is moved up to compress the second return spring 63, and when the slot 611 is present, the L-shaped trigger block 64 is inserted into the ;

A pull rod 62 is fixed to the second end of the L-shaped trigger block 64, and only the pull rod 62 is manually lifted, so that the L-type trigger block 64 is retracted, so that the unlocking of the armature can be realized.

Please refer to FIG. 8A and FIG. 8B , which are respectively a non-self-locking state diagram of the fifth embodiment of the short-circuit self-locking mechanism in the electronic high-voltage circuit breaker and the high-voltage isolating switch interlock device of the present invention; and the mechanical high-voltage circuit breaker of the present invention; And the self-locking state diagram of the fifth embodiment of the short-circuit self-locking mechanism in the high-voltage isolating switch interlocking device; the fifth-mentioned short-circuiting self-locking mechanism includes:

a hook 61 having a first end hung in a hole provided in the trigger end 441 of the top block, and the other end of which can protrude along a hole in the housing 10;

a return spring 62 disposed between the neutral portion of the middle of the hook and a joint to which the housing 10 is secured, i.e., at the first end of the hook 61 and the top block Trigger end 441 After the hole is separated, the hook 61 can be extended along the upper hole of the housing 10 due to the elastic force, so that the first end abuts against the trigger end 441 of the top block, so that It cannot be reset; that is to say, the implementation of the self-locking function of this embodiment is independent of whether the armature is reset.

Since the above-mentioned corresponding high-voltage circuit breaker with short-circuit self-locking function has a short-circuit fault, it must be manually unlocked, and it is necessary to detect which one of the high-voltage circuit breakers has a short-circuit problem, so the short-circuit detecting unit of the present application can communicate with one In combination, the communication unit is connected to the inrush current controller from an implementation point of view, and when an abnormal condition occurs, it acquires the

''Trigger signal, then convert it to information to send to a data receiver. This type of communication can be wired or wireless.

Please refer to FIG. 10 , which is a schematic diagram of a control circuit of the first embodiment of the electronic high-voltage circuit breaker and the high-voltage isolating switch interlock device of the present invention; the method includes: a digital power circuit, which obtains power from the power line through the voltage transformer T After the signal is processed by the voltage regulator chip D1, it is output through a filter rectifier circuit, and the filter rectifier circuit includes: a rectifier diode D8, a filter capacitor C2, and a voltage regulator DW1. a motor control circuit comprising: two branches, the first branch comprising: a first trip switch S1 that is open and a third trip switch S3 that is in a closed state, wherein The two branches include: a second stroke switch S2 in a closed state and a fourth stroke switch S4 in an open state. Which corresponds to the state of Figure 3A;

A motor forward/reverse control circuit comprising: four sets of transistors Q1, Q2, Q5, Q6 and protection diodes D2, D3, D5, D6, collectors of transistors Q1, Q2 and anodes of protection diodes D2, D3 The emitters of the transistors Q5 and Q6 are connected to the cathodes of the diodes D5 and D6, and the positive phase ends of the motor are connected with the transistors Q1 and Q1 and the protection diodes D2 and D5. The opposite ends of the motor are connected with another transistor Q2. And a protection diode D3, D6; a first unidirectional diode D7 having an anode connected to the positive phase end of the motor and a cathode connected to the first branch via a transistor Q8; a two-way diode D4 having an anode connected to the inverting end of the motor, and a cathode through-transistor Q7 connected to the second branch;

The base of the transistor Q2 is connected to the emitter of a transistor Q4; the base of the transistor Q4 is connected to the collector of the transistor Q8; the base of the transistor Q1 and a transistor The emitter of Q3 is connected, the base of said transistor Q3 is connected to the collector of said transistor Q7, and the collector of said transistor Q4 is connected to the base of said transistor Q5; said transistor Q6 The base is connected to the collector of the transistor Q3; that is, the first switch described in the first branch The SI closing and the third stroke switch S3 are closed, and the current flows in the opposite direction, and the motor rotates in the reverse direction, and then transitions to the unlocked state, at which time the second stroke switch S2 in the second branch is disconnected, and finally The third stroke switch S3 is opened, the fourth stroke switch S4 is closed and stops, and the high pressure isolating switch body can be operated; the second stroke switch S2 is closed and the fourth stroke switch S4 is closed, and the current flows in the positive direction. Then the motor rotates in the forward direction, and the interlocking state is excessive. At this time, the first stroke switch S1 is turned off and the third stroke switch S3 is closed.

Please refer to FIG. 11, which is a schematic diagram of a control circuit of the second embodiment of the electronic high voltage circuit breaker and the high voltage isolation switch interlocking device of the present invention. Compared with the above-mentioned implementation of a circuit, the difference is that the dynamic portion here is an electromagnet that flows in the positive and negative directions of the current to realize the separation and extension of the interlocking arm from the slot (hole). I won't go into details here.

The above are only the preferred embodiments of the present invention, and are merely illustrative and not restrictive. It will be understood by those skilled in the art that many changes, modifications, and equivalents may be made within the spirit and scope of the invention as defined by the appended claims.

Claims

Rights request

What is claimed is: 1. An electronic high voltage circuit breaker and a high voltage disconnecting switch interlocking device, comprising: a high voltage circuit breaker body having a phase end of a phase line for realizing breaking and closing of a phase line;

a high voltage isolating switch body connected to the high voltage circuit breaker body and having a phase line incoming connection block, wherein

Also includes:

a control unit for detecting whether a current flowing through the line of the high voltage circuit breaker body and/or the high voltage isolating switch body is present, and issuing a control signal indicating the state;

An interlocking unit that receives the control signal and interferes with a state change of the high-voltage isolating switch body; thereby realizing that the high-voltage isolating switch body cannot be generated when the high-voltage circuit breaker is in a path state Closing and breaking action.

2. The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 1, wherein the interlocking unit comprises:

a power portion for receiving the control signal and outputting a corresponding action; an interlocking arm coupled to the power portion for coupling with the moving structure of the high voltage isolating switch or It is separated, and when the high voltage circuit breaker is in the path state, the high voltage isolating switch body cannot generate the closing and breaking action.

The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 2, wherein the high-voltage circuit breaker body comprises:

a housing

The housing is provided with an insulating vacuum portion disposed according to the number of phase lines, and an outer end of each of the insulating vacuum portions is respectively provided with an incoming connecting block connected to an external line and the outlet end, The incoming connection block and the outgoing end respectively correspond to a movable contact block and a static contact block inside the insulating vacuum portion;

a breaking mechanism, disposed in the housing, comprising: a power unit and an action unit; wherein

When the action unit is triggered, the closing action or the breaking action of the moving contact block and the static touching block is implemented, thereby implementing conduction or disconnection of the line;

The power unit is configured to provide instantaneous power to the action unit for instantaneous breaking and closing.

The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 3, wherein the action unit comprises:

Main linkage,

a sub-linking member slidably coupled to the main linkage rod, the sub-linking member corresponding to the movable contact block.

The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 4, wherein the power unit is an elastic energy storage mechanism, comprising:

a handle,

a two-stage gear transmission structure, the crank handle is combined with the primary gear, and the primary gear is rotated by the crank handle;

a swinging block, which is coupled with the secondary gear, and an upper end connected to the main linkage rod;

An eccentric wheel pivotally coupled to the wobble block;

a top block, leaning against the side edge of the swinging block;

At least one first return spring coupled to the eccentric wheel and stretched as the eccentric rotates;

At least one second return spring is coupled to one end of the housing and the other end is coupled to the main linkage.

The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 2 or 5, wherein the high-voltage isolating switch body comprises:

a conductive arm disposed according to the number of phase lines, one end of which is provided with a rotating shaft and connected to the phase line of the access, and the other end corresponds to the incoming connecting block, and the rotating arm is rotated by the conductive arm The shaft reciprocates to realize the connection and separation of the conductive arm with the incoming connection block;

Each of the conductive arms is connected to a pulling rod, and the pulling rod drives the conductive arm to reciprocate around the rotating shaft;

a linkage shaft, the axial direction is provided with a pulling end arranged according to the number of phase lines, and each of the pulling ends is connected with one of the pulling rods;

A swinging handle is disposed at one end of the linkage shaft for closing and separating the high voltage isolating switch.

The device for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 6, wherein the other end of the linkage shaft is provided with a notch; one end of the interlocking arm and the Corresponding to the missing slot, the interlocking arm is placed inside or outside the slot by the power output of the power unit.

The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 7, further comprising: a first limit detecting device configured to detect whether the conductive arm is The incoming connection blocks are combined and, after combining, generate a position status signal.

9. The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 8, wherein the power unit is an electromagnet or a motor, and the electromagnet passes through a support frame. Connected to the housing, the interlocking arm is connected to the armature of the electromagnet; and the interlocking arm of the electromagnet armature is located in the slot or夕卜;

When the power unit is a motor, it is connected to the housing through a support frame, and the interlocking arm is connected to the motor output shaft; The interlocking arms are in or out of the slot.

The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 9, wherein a second limit detecting device is configured to detect whether the interlocking arm is the same as the The line connection blocks are combined and, after combining, generate a position status signal.

The device for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 9 or 10, further comprising:

a short-circuit detecting unit for detecting whether a phase fault of the phase line of the high-voltage circuit breaker body is short-circuited, and generating a breaking signal when a short-circuit fault occurs;

a short-circuit action triggering mechanism connected to the breaking mechanism in the high-voltage circuit breaker body, triggering the breaking mechanism to generate a breaking action when receiving the breaking signal; and a short-circuiting self-locking mechanism The breaking mechanism cannot be automatically reset.

The apparatus for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 11, wherein the short-circuit detecting unit comprises:

Providing a current collecting subunit on each of the phase lines for collecting current signals on each phase line;

An inrush current controller, which is respectively connected to the current collecting subunit, for collecting The current signal on any of the phase lines is compared with a current value, and a trigger signal is output when a short circuit occurs.

13. The electronic high voltage circuit breaker and the high voltage isolating switch interlocking device according to claim 12, wherein the short circuit action triggering mechanism is an electromagnet, and the electromagnetic coil is coupled to the inrush current controller. The connection has an armature end corresponding to a trigger end of the top block.

The device for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 13, wherein the short-circuit self-locking mechanism comprises:

One out of the block;

a return spring, which is sleeved on the ejector block;

a receiving slot, the ejector block and the return spring are disposed therein, and the accommodating slot is provided with a guiding slot corresponding to the armature;

The ejector block has an unlocking end for manual unlocking.

The device for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 14, wherein the short-circuit self-locking mechanism comprises:

a P-clamp block capable of being embedded in the recessed groove provided at the armature end;

a return spring disposed between the limiting block and the housing for realizing resetting of the limiting block;

A pull rod is fixed to the limiting block for manual unlocking.

a guiding groove body;

a trigger block disposed in the guiding slot for corresponding to a trigger end of the top block;

a first return spring disposed between the guiding groove body and the trigger block; a P-clamping block that can be embedded in the recessed groove provided by the trigger block;

a second return spring disposed between the limiting block and the housing for resetting the limiting block;

A pull rod is fixed to the limiting block for manual unlocking.

The device for interlocking an electronic high-voltage circuit breaker and a high-voltage isolating switch according to claim 14, wherein the short-circuit self-locking mechanism comprises: a guiding groove body, the bottom end of the guiding groove is provided with a recessed groove; an L-shaped trigger block is disposed in the guiding groove body, and the first end thereof is used with the top block The trigger end corresponds to, and a lower end thereof is provided with a protrusion corresponding to the recessed groove; a first return spring is disposed between the guiding groove body and the first end of the L-shaped trigger block ;

a second return spring disposed between the second end of the L-type trigger block and the housing for resetting the L-type trigger block;

A pull rod is fixed to the second end of the L-shaped trigger block for manual unlocking.

a hook, the first end of which is hung in a hole in the triggering end of the top block, and the other end of which is extendable along a hole in the housing;

A return spring is disposed between the hook and the housing.