Quick switch electromagnetic repulsion device with speed measurement function

Abstract

A quick switch electromagnetic repulsion device with a speed measurement function comprises an upper electromagnetic repulsion part and a lower distance measurement induction part. The electromagnetic action part comprises a protection structure; in the protection structure, an electromagnetic coil I is arranged on the upper side, an electromagnetic coil II is arranged on the lower side, and the repulsive force disc moves up and down between the electromagnetic coil I and the electromagnetic coil II; the distance measurement sensing part comprises a protective cover, a rotary connecting rod is arranged in the protective cover, the upper portion of the rotary connecting rod is connected with a repulsive force disc, the lower portion of the rotary connecting rod is connected with a telescopic rod of a displacement sensor through a connecting plate, and synchronous movement is achieved between the repulsive force disc and the telescopic rod of the displacement sensor. By means of the structure, bidirectional movement can be achieved, the action speed of the repulsion disc can be measured, the device is convenient to maintain, space is saved, the protection effect of internal parts is good, and the overall service life is long.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent high-voltage switch power transmission equipment and the field of gas insulated switchgear (GIS) fast switch, and mainly relates to a fast switch electromagnetic repulsion device with a speed measuring function. BACKGROUND

[0002] Compared with conventional open-type substations, the gas insulated switchgear (hereinafter referred to as GIS) has the advantages of compact structure, small footprint, high reliability, strong safety, small maintenance workload, low operation and maintenance cost, excellent insulation performance and the like, and is widely used in power transmission and transformation systems. With the development of power systems, the requirements of power systems on power switches are getting higher and higher. At present, the mechanical high-voltage circuit breaker used in the alternating current power transmission system is a spring mechanism or a hydraulic mechanism, and the arc extinguishing time of the commonly used sulfur hexafluoride switch is generally tens of milliseconds. The electromagnetic repulsion device based on the principle of electromagnetic induction eddy current has the advantages of short mechanical delay time and fast initial movement speed, and is particularly suitable for driving the mechanical contact to realize tripping within a few milliseconds. The electromagnetic repulsion device has the advantages of simple structure and high reliability. At present, most of the electromagnetic repulsion devices lack real-time monitoring of the movement speed of the repulsion disc. The fast switch electromagnetic repulsion device with a speed measuring function is of great significance to ensure its stable operation state in a complex power system environment. SUMMARY

[0003] The purpose of the present application is to solve the problems in the above-mentioned technology, and to propose a speed measuring technology, in which a sensor is installed on the electromagnetic repulsion device and reliably connected with the repulsion disc to realize synchronous action, and in this way, the real-time monitoring of the action state of the electromagnetic repulsion device is realized.

[0004] The present application is realized through the following structure: a fast switch electromagnetic repulsion device with a speed measuring function, comprising an upper electromagnetic repulsion part and a lower distance measuring induction part; the electromagnetic action part comprises a protection structure; in the protection structure, an electromagnetic coil I is arranged on the upper side, an electromagnetic coil II is arranged on the lower side, and the repulsion disc moves up and down between the electromagnetic coil I and the electromagnetic coil II; the distance measuring induction part comprises a protection cover, a rotating connecting rod is arranged in the protection cover, the upper part of the rotating connecting rod is connected with the repulsion disc, the lower part of the rotating connecting rod is connected with the telescopic rod of the displacement sensor through a connecting plate, and synchronous movement is realized between the repulsion disc and the telescopic rod of the displacement sensor.

[0005] The protection structure comprises an upper protection plate I, a lower protection plate II and support columns around.

[0006] The repulsive disk includes a disk structure disposed between electromagnetic coil I and electromagnetic coil II. Rod-shaped structures are provided in the upper and lower directions at the center of the disk. The upper rod-shaped structure protrudes through the protective plate I, and the lower rod-shaped structure passes through the protective plate II and is connected to the upper end of the rotating connecting rod by screw III.

[0007] The bottom of the rotating connecting rod is connected to one end of the connecting plate, and the other end of the connecting plate is connected to the telescopic rod of the displacement sensor. The rotating connecting rod is parallel to the displacement sensor.

[0008] The connecting rod is equipped with position holding devices on both sides. The position holding devices consist of two identical structures, which are symmetrically arranged on both sides of the connecting rod. Each structure includes a support plate II connected to the lower surface of the protective structure, a spring protective cover and a spring seat mounted on the support plate II, a holding spring set inside the spring protective cover via the spring seat, and the end of the holding spring limited by a stop block. One end of the connecting arm is fixed to the stop block, and the other end is fixed to the connecting rod.

[0009] The displacement sensor body is fixed on support plate I, which is installed at the lower part of the protective structure. The signal output terminal of the displacement sensor is connected to a signal cable, which is then connected to a through-plate connector to lead out the signal.

[0010] The beneficial effects of this invention are as follows: This invention provides a fast-switching electromagnetic repulsion device with speed measurement function, comprising an upper electromagnetic repulsion part and a lower distance sensing part. The electromagnetic part includes a protective structure; within the protective structure, an electromagnetic coil I is provided on the upper side and an electromagnetic coil II is provided on the lower side, with the repulsion disk moving up and down between electromagnetic coil I and electromagnetic coil II; the distance sensing part includes a protective cover, within which a rotating connecting rod is provided. The upper part of the rotating connecting rod is connected to the repulsion disk, and the lower part is connected to the telescopic rod of a displacement sensor via a connecting plate, enabling synchronous movement between the repulsion disk and the telescopic rod of the displacement sensor. This invention solves the problems of existing fast-switching electromagnetic repulsion devices in achieving bidirectional movement and measuring the speed of the repulsion disk. Because the miniature displacement sensor and the holding spring device are installed on the same side and inside the protective cover, not only are the internal parts effectively protected, but the installation space is also greatly saved, resulting in advantages such as simple structure and convenient maintenance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention.

[0012] Figure 2 for Figure 1 Schematic diagram of the ranging sensor section.

[0013] Figure 3 for Figure 1 Side view. Detailed Implementation

[0014] The specific implementation process of the present application is described in further detail below with reference to the accompanying drawings.

[0015] The electromagnetic repulsion device with quick switch and speed measurement function comprises an electromagnetic repulsion part in the upper part and a distance measurement induction part in the lower part.

[0016] As shown in Figures 1-2 The electromagnetic action part comprises a protective structure which is composed of the upper protective plate Ⅰ2, the lower protective plate Ⅱ6 and the surrounding support column 5 connected by the screw Ⅰ4 and the screw Ⅱ8. In the protective structure, the upper side is provided with the electromagnetic coil Ⅰ3 and the lower side is provided with the electromagnetic coil Ⅱ22, and the repulsion disc 1 moves up and down between the electromagnetic coil Ⅰ3 and the electromagnetic coil Ⅱ22. The repulsion disc 1 comprises a disc structure arranged between the electromagnetic coil Ⅰ3 and the electromagnetic coil Ⅱ22, and a rod-shaped structure is arranged in the upper and lower directions at the center position of the disc. The upper rod-shaped structure passes through the protective plate Ⅰ2 and is exposed to the outside and connected with the external execution unit, and the lower rod-shaped structure passes through the protective plate Ⅱ6.

[0017] The distance measurement induction part is arranged in the lower part of the electromagnetic repulsion part and comprises a protective cover 9. The protective cover 9 is connected with the protective plate Ⅱ6 through the screw Ⅱ8 and is provided with a sealing ring 7. The protective cover 9 is provided with a rotating connecting rod 11. The upper part of the rotating connecting rod 11 is connected with the bottom of the repulsion disc 1 through the screw Ⅲ10, the bottom of the rotating connecting rod 11 is connected with one end of the connecting plate 13 through the screw Ⅳ12, the other end of the connecting plate 13 is connected with the telescopic rod of the displacement sensor 19 through the screw, and the upper and lower surfaces at the connecting position of the connecting plate 13 and the telescopic rod of the displacement sensor 19 are provided with the nut Ⅰ14 and the nut Ⅱ15. The rotating connecting rod 11 is parallel to the displacement sensor 19, so that the synchronous movement between the repulsion disc 1 and the telescopic rod of the displacement sensor 19 is realized. The body of the displacement sensor 19 is fixed on the support plate Ⅰ20 through the screw V18, and the support plate Ⅰ20 is installed on the lower part of the protective plate Ⅱ6 through the screw Ⅵ21. The signal output end of the displacement sensor 19 is connected with the signal cable 17, the signal cable 17 is connected with the through-plate connector 16 to lead out the signal. The displacement sensor 19 is a micro position sensor.

[0018] As shown in Figures 2-3As shown, the position maintaining device is provided on both sides of the rotating link 11. The position maintaining device is composed of two sets of identical structures, which are symmetrically arranged on both sides of the rotating link 11. Each set of structure comprises a support plate II 31 connected to the lower surface of the protection plate II 6 by a screw VII 23, a spring protection cover 24 and a spring seat 26 are installed on the support plate II 31, a retaining spring 25 is arranged in the spring protection cover 24 through the spring seat 26, the end of the retaining spring 25 is limited by a stop block 27, one end of a connecting arm 29 is fixed with the stop block 27, and the other end is fixed with the rotating link 11. Preferably, ear structures are provided on both sides of the rotating link 11, one end of the connecting arm 29 is connected with the ear structure by a screw VIII 28, and the other end is connected with the stop block 27 by a screw IX 30. When the rotating link 11 is in the uppermost state, the screw VIII 28 is higher than the screw IX 30, and at this time the retaining spring 25 is in a natural state. When the rotating link 11 moves downward, the screw VIII 28 is at the same height as the screw IX 30, and at this time the retaining spring 25 reaches the maximum compression state. When the rotating link 11 continues to move downward to the lowermost state, the screw VIII 28 is lower than the screw IX 30, and at this time the retaining spring 25 returns to the natural state.

[0019] When assembling: first, the protection plate I 2 is fixed with the electromagnetic coil I 3, the protection plate II 6 is fixed with the electromagnetic coil II 22, the repulsion disc 1 is placed between the electromagnetic coil I 3 and the electromagnetic coil II 22, and then is fixed with the support column 5 provided with a threaded hole by the screw I 4. The spring protection cover 24 and the spring seat 26 are fixed with the support plate I 31 by the screw VII 23, the retaining spring 25 is installed on the spring seat 26 and installed in the spring protection cover 24 by the stop block 27, the support plate II 31 is fixed with the protection plate II 6 by the screw X 32, one end of the connecting arm 29 is fixed with the stop block 27 by the screw IX 30, and the other end is fixed with the rotating link 11 by the screw VIII 28. The spring arrangement is a symmetrical structure, which makes the position maintaining function more reliable and avoids misoperation. The miniature displacement sensor 19 is fixed with the support plate I 20 by the screw V 18, and the support plate I 20 is fixed on the protection plate II 6 by the screw VI 21. One end of the connecting plate 13 is fixed with the rotating link 11 by the screw IV 12, and the other end is fixed with the miniature displacement sensor 19 by the nut I 14 and the nut II 15, so as to realize the synchronous action of the sensor and the repulsion disc. The sealing ring 7 is installed in the sealing groove of the protection plate II 6 and is pressed tightly with the protection cover 9 by the screw II 8. The through-plate connector 16 is installed on the protection cover 9 by the self-locking nut, and the miniature displacement sensor 19 is connected with the through-plate connector 16 through the signal cable 17 to lead out the signal. Thus, the quick switch electromagnetic repulsion device with speed measuring function is assembled.

[0020] In use: the leading end of the repulsion disc 1 of the quick switch electromagnetic repulsion device is connected and fixed with the connection execution unit, and the reciprocating action of the repulsion disc 1 is controlled under the driving of the control driving module. Since the repulsion disc 1 and the micro displacement sensor 19 are fixed through the connecting plate 13, the micro displacement sensor 19 and the repulsion disc 1 act synchronously, that is, the speed of the repulsion disc 1 can be measured, the speed information is led out by the through-plate connector 16 through the multi-core signal cable 17 and transmitted to the measuring device, and finally the speed signal analysis work is completed by the measuring device.

Claims

1. A quick switch electromagnetic repulsion device with speed measurement function, characterized in that: The electromagnetic repulsion part includes an upper part and a lower part. The electromagnetic interaction part includes a protective structure, an electromagnetic coil I (3) is arranged on the upper side of the protective structure, an electromagnetic coil II (22) is arranged on the lower side of the protective structure, and the repulsion disc (1) moves up and down between the electromagnetic coil I (3) and the electromagnetic coil II (22). The distance measuring induction part includes a protective cover (9), the protective cover (9) is internally provided with a rotating connecting rod (11), the upper part of the rotating connecting rod (11) is connected with the repulsion disc (1), the lower part of the rotating connecting rod (11) is connected with the telescopic rod of the displacement sensor (19) through a connecting plate (13), and synchronous movement is realized between the repulsion disc (1) and the telescopic rod of the displacement sensor (19).

2. The electromagnetic repulsion device with a quick switch and a speed measurement function according to claim 1, characterized in that: The protective structure includes an upper protective plate I (2), a lower protective plate II (6) and a support column (5) around.

3. The electromagnetic repulsion device with a quick switch and a speed measurement function according to claim 2, characterized in that: The repulsion disc (1) includes a disc structure arranged between the electromagnetic coil I (3) and the electromagnetic coil II (22), a rod-shaped structure is arranged on the upper side and the lower side of the center of the disc, the upper rod-shaped structure is exposed through the protective plate I (2), and the lower rod-shaped structure is exposed through the protective plate II (6) and connected with the upper end of the rotating connecting rod (11) through a screw III (10).

4. The electromagnetic repulsion device with a quick switch and a speed measurement function according to claim 1, characterized in that: The bottom of the rotating connecting rod (11) is connected with one end of the connecting plate (13), the other end of the connecting plate (13) is connected with the telescopic rod of the displacement sensor (19), and the rotating connecting rod (11) is parallel to the displacement sensor (19).

5. The electromagnetic repulsion device with a quick switch and a speed measurement function according to claim 1, characterized in that: The rotating connecting rod (11) is provided with a position maintaining device on both sides.

6. The electromagnetic repulsion device with a quick switch and a speed measurement function according to claim 5, characterized in that: The position maintaining device is composed of two sets of identical structures, the two sets of structures are symmetrically arranged on both sides of the rotating connecting rod (11), each set of structure includes a support plate II (31) connected with the lower surface of the protective structure, a spring protection cover (24) and a spring seat (26) are installed on the support plate II (31), a retaining spring (25) is arranged in the spring protection cover (24) through the spring seat (26), the end of the retaining spring (25) is limited by a stop block (27), one end of a connecting arm (29) is fixed with the stop block (27), and the other end of the connecting arm (29) is fixed with the rotating connecting rod (11).

7. The electromagnetic repulsion device with a fast switch and a speed measurement function according to claim 1, characterized in that: The body of the displacement sensor (19) is fixed on a support plate I (20), and the support plate I (20) is installed on the lower part of the protective structure.

8. The electromagnetic repulsion device with a fast switch and a speed measurement function according to claim 1, characterized in that: The signal output end of the displacement sensor (19) is connected with a signal cable (17), the signal cable (17) is connected with a through-plate connector (16) to lead out signals.

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