CN216902598U - Three-phase mechanical linkage isolating switch's divide-shut brake monitoring system - Google Patents

Abstract

The utility model discloses a switching-on and switching-off monitoring system of a three-phase mechanical linkage isolating switch, which comprises an isolating switch body and an isolating switch electric mechanism, wherein the isolating switch body comprises an A isolating switch, a B isolating switch and a C isolating switch, the isolating switch electric mechanism is connected with the isolating switch body, and the switching-on and switching-off monitoring system also comprises three switching-on and switching-off signal monitoring devices, the three isolating switching-on and switching-off signal monitoring devices are respectively connected with the A isolating switch, the B isolating switch and the C isolating switch through output shafts, and the switching-on and switching-off signal monitoring devices are used for monitoring and judging the switching-on and switching-off positions of the isolating switch body. The utility model has the advantages of simple structure, good non-homology, high accuracy, high reliability and the like.

Description

An opening and closing monitoring system of a three-phase mechanical linkage isolating switch

technical field

The utility model mainly relates to the technical field of isolation switches, in particular to an opening and closing monitoring system of a three-phase mechanical linkage isolation switch.

Background technique

Gas-insulated metal-enclosed switchgear (abbreviation: combined electrical appliances), as an important equipment in the power system, is widely used in China. As an important module of intelligence, sequence control has high requirements for the accuracy of the opening and closing signal of the combination electrical isolation switch module body. If the wrong operation is caused by the inaccurate opening and closing position, it will lead to a very serious accident. The existing three-phase mechanical linkage isolating switch uses the isolating switch motor mechanism to provide the operation functions required for the isolating switch opening and closing, and provides the opening and closing indication signals of different sources for the one-key sequence control system. One is the auxiliary switch node signal, and the other is However, since the two sets of signals are drawn from the power input side of the motor mechanism, the possible mechanical faults that may occur during the transmission process of the isolation switch body cannot be found in time, which provides a wrong signal for the one-key sequence control system. Therefore, in the prior art, it is impossible to rule out the failure of the opening and closing or the lack of phase closing caused by the mechanical failure of the isolating switch body, and it is impossible to provide more accurate opening and closing information for the one-key sequence control system.

Utility model content

In view of the technical problems existing in the prior art, the utility model provides an opening and closing monitoring system of a three-phase mechanical linkage isolating switch with simple structure, good non-homology, high accuracy and high reliability.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

An opening and closing monitoring system of a three-phase mechanical linkage isolating switch, comprising an isolating switch body and an isolating switch motor mechanism, the isolating switch body comprising an A-phase isolating switch, a B-phase isolating switch and a C-phase isolating switch, the isolating switch The motor mechanism is connected with the isolation switch body, and also includes three opening and closing signal monitoring devices, and the three opening and closing signal monitoring devices are respectively connected with the A-phase isolation switch, the B-phase isolation switch and the C-phase isolation switch through the output shaft, The opening and closing signal monitoring device is used for monitoring and judging the opening and closing position of the isolation switch body.

As a further improvement of the present invention, the A-phase isolating switch, the B-phase isolating switch and the C-phase isolating switch are connected by a link mechanism to realize mechanical linkage.

As a further improvement of the present utility model: the opening and closing signal monitoring device includes a first rack, a second rack, a gear structure, and a first travel switch, and the first rack and the second rack are engaged with the gear structure The gear structure is connected with the output shaft of the isolation switch body, and the rotation of the output shaft drives the gear structure to rotate, and drives the first rack or the second rack to connect or disconnect with the travel switch.

As a further improvement of the present invention, the opening and closing signal monitoring device further includes a protective box, and the first rack, the second rack, the gear structure and the first travel switch are arranged in the protective box.

As a further improvement of the present utility model: the opening and closing signal monitoring device includes a control board and a micro switch, the control board is connected with the output shaft of the isolation switch body, and the output shaft drives the control board to rotate so that the The control board pushes the microswitch up or away from the microswitch.

As a further improvement of the present utility model: the control board is a cam structure.

As a further improvement of the present invention, the opening and closing signal monitoring device further includes a protective cover, and the control board and the micro switch are arranged in the protective cover.

As a further improvement of the present utility model: the travel switch nodes of the three opening and closing signal monitoring devices are connected in series, and the travel switch nodes of the three opening and closing signal monitoring devices are connected in parallel with the second travel switch node of the isolation switch motor mechanism .

As a further improvement of the present utility model: the micro-switch nodes of the three opening and closing signal monitoring devices are connected in series, and the micro-switch nodes of the three opening and closing signal monitoring devices are connected to the second travel switch of the isolation switch motor mechanism. Nodes are connected in parallel.

As a further improvement of the present utility model: the isolating switch motor mechanism is installed on the B-phase isolating switch.

Compared with the prior art, the advantages of the present utility model are:

1. The opening and closing monitoring system of the three-phase mechanical linkage isolating switch of the present utility model, each single-phase isolating switch is equipped with an opening and closing signal monitoring device, and the opening and closing signal monitoring device of the isolating switch body is used for the opening and closing of the isolating switch body. Position monitoring, when the isolation switch motor mechanism is consistent with the output signal of the opening and closing signal monitoring device, an accurate opening and closing indication signal is sent to the one-key sequence control system. The utility model can effectively eliminate the failure of opening and closing or the lack of phase closing caused by the mechanical failure of the isolating switch body, so that the opening and closing signal is more accurate.

2. In the opening and closing monitoring system of the three-phase mechanical linkage isolating switch of the present invention, the travel switch nodes of the three opening and closing signal monitoring devices are connected in series, and the travel switch nodes of the three opening and closing signal monitoring devices are electrically connected to the disconnecting switch. The travel switch nodes of the mechanism are connected in parallel. Only when the three-phase isolation switches are turned in place, the travel switch nodes of the three opening and closing signal monitoring devices will be turned on, and the opening or closing in-position signal can be issued, which can effectively eliminate the transmission process. The single-phase mechanical fault causes the inaccurate opening and closing signal; the three-phase series signal and the trip switch node signal of the isolation switch motor mechanism together form a double confirmation signal for the isolation switch opening and closing judgment, from the input shaft of the isolation switch to the output shaft. At the same time, the terminal judges the position of the opening and closing signals, which can effectively eliminate mechanical faults, greatly improve the reliability of product operation, and effectively prolong the service life of the product.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention in a specific embodiment 1. FIG.

FIG. 2 is a schematic cross-sectional view of the present invention in specific embodiment one

FIG. 3 is a schematic structural diagram of the single-phase isolating switch of the present invention in a specific embodiment 1. FIG.

FIG. 4 is a schematic structural diagram of the opening and closing signal monitoring device according to the first embodiment of the present invention.

FIG. 5 is a signal circuit diagram of the present invention.

FIG. 6 is a schematic structural diagram of the opening and closing signal monitoring device according to the second embodiment of the present invention.

illustration:

1. Isolating switch body; 11. A-phase isolating switch; 12. B-phase isolating switch; 13. C-phase isolating switch; 2. Isolating switch motor mechanism; 3. Opening and closing signal monitoring device; 31. The first rack; 32, the second rack; 33, the gear structure; 34, the first travel switch; 35, the protective box; 36, the control board; 37, the micro switch; 38, the protective cover.

Detailed ways

The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in FIGS. 1 to 5 , this embodiment discloses a three-phase mechanically linked disconnector monitoring system for switching on and off, including a disconnector body 1 and an disconnector motor mechanism 2 , and the disconnector body 1 includes an A-phase disconnector 11 , B-phase isolating switch 12 and C-phase isolating switch 13, the isolating switch motor mechanism 2 is connected with the isolating switch body 1, and also includes three opening and closing signal monitoring devices 3, three opening and closing signal monitoring devices 3 through the output shaft respectively. Connected with the A-phase isolating switch 11 , the B-phase isolating switch 12 and the C-phase isolating switch 13 , the opening and closing signal monitoring device 3 is used to monitor and determine the opening and closing position of the isolating switch body 1 .

In the opening and closing monitoring system of the three-phase mechanical linkage isolating switch in this embodiment, each single-phase isolating switch is equipped with an opening and closing signal monitoring device 3, and the opening and closing signal monitoring device 3 is used to open and close the isolating switch body 1 When the isolation switch motor mechanism 2 is consistent with the output signal of the opening and closing signal monitoring device 3, an accurate opening and closing indication signal is sent to the one-key sequence control system. The utility model can effectively eliminate the failure of opening and closing or lack of phase closing caused by the mechanical failure of the isolating switch body 1, so that the opening and closing signal is more accurate.

In this embodiment, the A-phase isolating switch 11, the B-phase isolating switch 12 and the C-phase isolating switch 13 are connected by a link mechanism to achieve mechanical linkage; further, in a preferred embodiment, the link mechanism is a link arm, which is connected by a link mechanism. The link arm can realize the mechanical linkage of the three-phase isolating switch. The isolation switch motor mechanism 2 may be provided with only one, such as being installed on the B-phase isolation switch 12 .

In this embodiment, the opening and closing signal monitoring device 3 includes a first rack 31 , a second rack 32 , a gear structure 33 , a first travel switch 34 , a first rack 31 , a second rack 32 and a gear structure 33 Meshing, the gear structure 33 is connected with the output shaft of the isolation switch body 1, and the rotation of the output shaft drives the gear structure 33 to rotate, and drives the first rack 31 or the second rack 32 to connect or disconnect with the travel switch. The gear structure 33 rotates with the output shaft and pushes the rack, thereby driving the travel switch to open and close, so that the open and close position of the isolation switch can be judged. By adopting the gear and rack structure, the opening and closing signal monitoring device 3 is not restricted by the rotation angle of the output shaft.

In this embodiment, the opening and closing signal monitoring device 3 further includes a protective box 35. The first rack 31, the second rack 32, the gear structure 33, and the first travel switch 34 are arranged in the protective box 35. The protective box 35 can It effectively plays a protective role, and can also avoid the occurrence of inaccurate monitoring caused by the interference of the first travel switch 34 by the external environment.

In this embodiment, the travel switch nodes of the three opening and closing signal monitoring devices 3 are connected in series, and the travel switch nodes of the three opening and closing signal monitoring devices 3 are connected in parallel with the second travel switch node of the isolation switch motor mechanism 2 . Only when the three-phase isolating switches are all rotated in place, the travel switch nodes of the three opening and closing signal monitoring devices 3 will be turned on, and the opening or closing in-position signal can be issued, which can effectively eliminate the single-phase mechanical fault during the transmission process. The closing signal is inaccurate; the three-phase series signal and the travel switch node signal of the isolation switch motor mechanism 2 together form a double confirmation signal for the isolation switch opening and closing judgment, from the input shaft of the isolation switch body 1 to both ends of the output shaft are judged at the same time The opening and closing signals are in place, which can effectively eliminate mechanical faults, greatly improve the reliability of product operation, and effectively prolong the service life of the product.

In specific use, the isolating switch motor mechanism 2 drives the B-phase isolating switch 12 to act through the input shaft, and the B-phase isolating switch 12 acts to drive the A-phase isolating switch 11 and the C-phase isolating switch 13 to act through the connecting rod arm, thereby driving the output shaft to rotate. , the rotation of the output shaft drives the gear structure 33 in the opening and closing signal monitoring device 3 to rotate, and then pushes the rack, thereby driving the travel switch to open and close. Only when the three-phase isolation switches are rotated in place, the three opening and closing signal monitoring devices 3 The travel switch node will be turned on, and the opening or closing in-position signal can be issued.

Embodiment 2

As shown in FIG. 6 , this embodiment is basically the same as the first embodiment, except that the opening and closing signal monitoring device 3 includes a control board 36 and a micro switch 37, and the control board 36 is connected to the output shaft of the isolation switch body 1, The output shaft drives the control board 36 to rotate, so that the control board 36 pushes the micro switch 37 up or away from the micro switch 37. The micro switch 37 is installed on the installation board of the opening and closing signal monitoring device 3 through fasteners, and has a certain adjustment space, so that it can determine the position of opening and closing. Further, in a preferred embodiment, the control plate 36 is a cam structure.

In this embodiment, the opening and closing signal monitoring device 3 further includes a protective cover 38 , and the control board 36 and the micro switch 37 are arranged in the protective cover 38 . The protective cover 38 can play a protective role, and can also prevent the microswitch 37 from being disturbed by the external environment and cause inaccurate monitoring.

In this embodiment, the microswitch nodes of the three opening and closing signal monitoring devices 3 are connected in series, and the microswitch nodes of the three opening and closing signal monitoring devices 3 are connected in parallel with the second travel switch node of the isolation switch motor mechanism 2 . Only when the three-phase isolating switches are all rotated in place, the micro-switch nodes of the three opening and closing signal monitoring devices 3 will be turned on, and the opening or closing in-position signal can be issued, which can effectively eliminate the single-phase mechanical failure during the transmission process. The opening and closing signal is inaccurate; the three-phase series signal and the trip switch node signal of the isolation switch motor mechanism 2 together form a double confirmation signal for the isolation switch opening and closing judgment, from the input shaft of the isolation switch body 1 to both ends of the output shaft at the same time Judging the status of the opening and closing signals in place, which can effectively eliminate mechanical faults, greatly improve the reliability of product operation, and effectively prolong the service life of the product.

The above are only the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, and all technical solutions under the idea of the present utility model belong to the protection scope of the present utility model. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a three-phase machinery linkage isolator's divide-shut brake monitoring system, includes isolator body (1) and isolator electric mechanism (2), isolator body (1) includes A phase isolation switch (11), B phase isolation switch (12) and C phase isolation switch (13), isolator electric mechanism (2) link to each other with isolator body (1), its characterized in that still includes three divide-shut brake signal monitoring devices (3), and is three divide-shut brake signal monitoring devices (3) link to each other with A phase isolation switch (11), B phase isolation switch (12) and C phase isolation switch (13) respectively through the output shaft, divide-shut brake signal monitoring devices (3) are used for monitoring and judge isolator body (1) divide-shut brake position.

2. The opening and closing monitoring system of the three-phase mechanical linkage isolating switch according to claim 1, wherein the A-phase isolating switch (11), the B-phase isolating switch (12) and the C-phase isolating switch (13) are connected through a link mechanism to realize mechanical linkage.

3. The switching-on and switching-off monitoring system of the three-phase mechanical linkage isolating switch according to claim 2, wherein the switching-on and switching-off signal monitoring device (3) comprises a first rack (31), a second rack (32), a gear structure (33) and a first travel switch (34), the first rack (31) and the second rack (32) are meshed with the gear structure (33), the gear structure (33) is connected with an output shaft of the isolating switch body (1), and the output shaft rotates to drive the gear structure (33) to rotate to drive the first rack (31) or the second rack (32) to be connected with or disconnected from the travel switch.

4. The switch-on/off monitoring system of the three-phase mechanical linkage isolating switch according to claim 3, wherein the switch-on/off signal monitoring device (3) further comprises a protective box (35), and the first rack (31), the second rack (32), the gear structure (33) and the first travel switch (34) are arranged in the protective box (35).

5. The switch-on/off monitoring system of the three-phase mechanical linkage isolating switch according to claim 2, wherein the switch-on/off signal monitoring device (3) comprises a control board (36) and a micro switch (37), the control board (36) is connected with an output shaft of the isolating switch body (1), and the output shaft drives the control board (36) to rotate so that the control board (36) pushes the micro switch (37) to be opened or leaves the micro switch (37).

6. The switch-closing monitoring system of the three-phase mechanical linkage isolating switch according to claim 5, characterized in that the control panel (36) is of a cam structure.

7. The switch-on/off monitoring system of the three-phase mechanical linkage isolating switch according to claim 5, characterized in that the switch-on/off signal monitoring device (3) further comprises a protective cover (38), and the control board (36) and the micro switch (37) are arranged in the protective cover (38).

8. The switch-on/switch-off monitoring system of the three-phase mechanical linkage isolating switch according to claim 3, characterized in that the travel switch nodes of the three switch-on/switch-off signal monitoring devices (3) are connected in series, and the travel switch nodes of the three switch-on/switch-off signal monitoring devices (3) are connected in parallel with the second travel switch node of the isolating switch electric mechanism (2).

9. The switch-on/switch-off monitoring system of the three-phase mechanical linkage isolating switch according to claim 5, characterized in that the micro-switch nodes of the three switch-on/switch-off signal monitoring devices (3) are connected in series, and the micro-switch nodes of the three switch-on/switch-off signal monitoring devices (3) are connected in parallel with the second travel switch node of the isolating switch electric mechanism (2).

10. A switch-on/switch-off monitoring system for a three-phase mechanical ganged disconnecting switch according to any one of claims 1 to 9, characterized in that the disconnecting switch electric mechanism (2) is mounted on a B disconnecting switch (12).

Images