An intelligent electrical detector for switching operation of ±500 kV converter substation

Abstract

The present invention discloses an intelligent electrical detector for switching operation of ±500 kV converter substation, which comprises an insulating telescopic rod and an electrical detection instrument. The insulating telescopic rod includes a grip cylinder, a first telescopic cylinder, a second telescopic cylinder, a third telescopic cylinder and a telescopic shaft. A protective platform and a support assembly are provided on the grip cylinder, and an installation groove and a threaded cylinder are provided on the telescopic shaft. The electrical detection instrument is fixed in the installation groove. The present invention provides a certain supporting effect for the second telescopic cylinder through an annular plate and an elastic block, and makes the grip rod located on the upper side of the grip cylinder, so that it is convenient for the user to stably hold and test the insulating telescopic rod and the electrical detection instrument through the grip cylinder and the grip rod; when the insulating telescopic rod compresses and the internal spring contracts, the threaded cylinder is located at the top of the grip cylinder, and by rotating the threaded cylinder, it is screwed and fixed with the grip cylinder, so that the whole insulating telescopic rod is in a stable contracted state, which is convenient for carrying and moving. It is applicable to converter substations.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance of power transmission and transformation electrical equipment, and specifically relates to an intelligent electrical detector for switching operation of ±500 kV converter substations. Background Art

[0002] With the rapid development of China's economy, a large number of high-voltage power transmission and transformation projects have been put into operation. When operating personnel in a converter substation perform electrical detection operations, they can only judge whether the equipment is energized based on the sound and light warnings of the electrical detector. When there is a small induced voltage or residual load on the equipment, the electrical detector cannot give an effective prompt and display the corresponding voltage value, and it is necessary to use instruments for measurement, which affects work efficiency and poses certain safety risks. In addition, when using the electrical detector, the operator can only hold the bottom end of the insulating rod and cannot exceed the protective ring at the bottom of the insulating rod. When the telescopic length of the insulating rod is relatively large, situations such as unstable holding may occur, affecting the test operation of the electrical detector, etc.

[0003] Based on this, the present invention designs an intelligent electrical detector for switching operation of ±500 kV converter substations to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent electrical detector for switching operation of ±500 kV converter substations to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An intelligent electrical detector for switching operation of ±500 kV converter substations includes an insulating telescopic rod and an electrical detection instrument fixed to the top end of the insulating telescopic rod. The insulating telescopic rod includes a grip cylinder. An annular protective platform is fixed to the upper part of the outer side wall of the grip cylinder. One side of the protective platform is fixed with an extending plate extending outward, and a support assembly is provided on the extending plate. Above the grip cylinder, a first telescopic cylinder, a second telescopic cylinder, and a third telescopic cylinder are sequentially arranged from bottom to top. The diameters of the three telescopic cylinders decrease sequentially from bottom to top, and the bottom ends are all set as closed ends and are slidably connected to the adjacent lower telescopic cylinder and are connected to the inner cavity bottom surface of the lower telescopic cylinder through a spring;

[0006] The bottom end of the first telescopic cylinder is connected to the grip cylinder through a spring. A telescopic shaft is connected to the inner cavity of the third telescopic cylinder through a spring. The top end of the telescopic shaft extends out and is fixed with a mounting groove, and the electrical detection instrument is installed in the mounting groove. The top of the telescopic shaft is also rotatably connected to a rotating cylinder. The bottom end of the rotating cylinder is fixed with a threaded cylinder. The upper part of the outer side wall of the grip cylinder is provided with threads and is correspondingly connected to the threaded cylinder through the threads.

[0007] Preferably, the support assembly includes a grip rod vertically and slidably connected to the extension plate. The bottom end of the grip rod passes through the connecting plate and is fixed with a limiting block. The top end is fixed with a horizontal connecting plate, and the inner side end of the connecting plate is fixed with a connecting ring. A plurality of vertical elastic blocks are uniformly fixed on the inner side wall of the connecting ring along the circumferential direction. The elastic blocks are in contact with the upper outer side wall of the second telescopic cylinder. A plurality of vertical sliding grooves are provided on the upper outer side wall of the grip cylinder corresponding to the positions of the elastic blocks. The bottom end of the elastic block is set as an inclined surface, and an inclined guiding surface is correspondingly provided at the top end of the sliding groove.

[0008] Preferably, a first anti-slip sleeve is provided on the outer side wall of the grip cylinder, and a groove is provided around the middle side wall of the grip rod, and a second anti-slip sleeve is provided in the groove.

[0009] Preferably, the electrical inspection instrument includes a tester fixed in the inner cavity of the electrical inspection instrument housing. The top end of the tester is fixed with a test contact, and the test contact is located outside the housing. The tester is connected with an A / D conversion circuit. The A / D conversion circuit is connected with a CPU board and a rechargeable battery. An LED screen is provided at the upper part of one side of the electrical inspection instrument, and a speaker is provided at the lower part. Both the LED screen and the speaker are connected with the CPU board.

[0010] Preferably, a plurality of rows of sound outlet holes are uniformly provided on the side wall of the installation groove along the circumferential direction of the center of the side wall of the electrical inspection instrument corresponding to the position of the speaker.

[0011] Preferably, positioning assemblies are provided at the bottoms of the first telescopic cylinder, the second telescopic cylinder and the third telescopic cylinder. Positioning holes corresponding to the positioning assemblies are provided on the upper parts of the side walls of the grip cylinder and the first telescopic cylinder and the second telescopic cylinder. The positioning assembly includes a slot located at the center of the bottom of the inner cavity of the grip cylinder or the telescopic cylinder. The bottom end of the slot is closed, and extension ports are symmetrically provided on the upper parts of the two side walls of the slot. A positioning block is slidably connected in the extension port. A spring plate is fixed to the bottom of the inner side end of the positioning block. A spring is connected between the spring plate and the lower side wall of the slot. An inclined surface is provided at the top of the inner side end of the positioning block, and an iron block is fixed on the inclined surface. The outer side end of the positioning block of the upper telescopic cylinder is located in the positioning block of the adjacent lower telescopic cylinder or the grip cylinder. Plug blocks are fixed to the bottom ends of the second telescopic cylinder, the third telescopic cylinder and the telescopic shaft. The plug blocks are slidably connected with the slots, and inclined surfaces are symmetrically provided on both sides of the bottom, and magnetic plates are fixed on the inclined surfaces.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a certain supporting effect for the second telescopic cylinder through the annular plate and the elastic block, and makes the grip rod located on the upper side of the grip cylinder, so that it is convenient for the user to stably hold and test the insulating telescopic rod and the electrical testing instrument through the grip cylinder and the grip rod, etc.; When the insulating telescopic rod compresses and the internal spring contracts, the threaded cylinder is located at the top of the grip cylinder. By rotating the threaded cylinder, it is screwed and fixed with the grip cylinder, so that the entire insulating telescopic rod is in a stable contracted state, which is convenient for carrying and moving; The electrical test is carried out through the test contact, and the current voltage is displayed on the LED screen, and voice broadcast is carried out through the speaker, so that the on-site personnel can accurately grasp the energized situation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 Structural schematic diagram of the present invention;

[0015] Figure 2 Structural schematic diagram of the top of the grip cylinder of the present invention;

[0016] Figure 3 Structural schematic diagram of the connecting ring of the present invention;

[0017] Figure 4 Structural schematic diagram of the top end of the telescopic shaft of the present invention;

[0018] Figure 5 Structural schematic diagram of the electrical testing instrument of the present invention;

[0019] Figure 6 Schematic diagram of the contracted state of the present invention;

[0020] Figure 7 Structural schematic diagram of the positioning component of the present invention.

[0021] In the drawings, the list of components represented by each reference numeral is as follows:

[0022] 1 - Holding cylinder, 101 - Protection platform, 102 - Extension plate, 103 - Slide groove, 2 - First telescopic cylinder, 3 - Second telescopic cylinder, 4 - Third telescopic cylinder, 5 - Telescopic shaft, 501 - Threaded cylinder, 502 - Rotating cylinder, 503 - Installation groove, 6 - Electrometric instrument, 601 - Test contact, 602 - Tester, 603 - A / D conversion circuit, 604 - CPU board, 605 - Speaker, 606 - LED screen, 7 - Holding rod, 701 - Limit block, 702 - Connecting plate, 703 - Connecting ring, 704 - Elastic block, 8 - Insert block, 801 - Magnet plate, 802 - Positioning block, 803 - Spring plate, 804 - Iron block. Detailed implementation mode

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] Embodiment 1

[0025] Please refer to the accompanying drawings. The present invention provides a technical solution: an intelligent electrometer for switching operations of ±500 kV converter substations, including an insulating telescopic rod and an electrometric instrument 504 fixed at the top of the insulating telescopic rod. The insulating telescopic rod includes a holding cylinder 1. An annular protection platform 101 is fixed on the upper part of the outer side wall of the holding cylinder 1. One side of the protection platform 101 is fixed with an outward extending extension plate 102, and a support assembly is provided on the extension plate 102. Above the holding cylinder 1, a first telescopic cylinder 2, a second telescopic cylinder 3, and a third telescopic cylinder 4 are arranged in sequence from bottom to top. The diameters of the three telescopic cylinders decrease in sequence from bottom to top. The bottom ends are all set as closed ends and are slidably connected to the adjacent lower telescopic cylinder and are connected to the inner cavity bottom surface of the lower telescopic cylinder through a spring;

[0026] The bottom end of the first telescopic cylinder 2 is connected to the holding cylinder 1 through a spring. In the inner cavity of the third telescopic cylinder 4, a telescopic shaft 5 is connected through a spring. The top end of the telescopic shaft 5 extends out and is fixed with an installation groove 503, and the electrometric instrument 504 is installed in the installation groove 503. A protective cover or other structures can be provided at the top of the installation groove 503 to protect structures such as the test contact 601 of the electrometric instrument 504. The top of the telescopic shaft 5 is also rotatably connected to a rotating cylinder 502. The bottom end of the rotating cylinder 502 is fixed with a threaded cylinder 501. Threads are provided on the upper part of the outer side wall of the holding cylinder 1 and are correspondingly connected to the threaded cylinder 501 through the threads. When the insulating telescopic rod compresses and the internal spring contracts, the threaded cylinder 501 is located at the top of the holding cylinder 1. By rotating the threaded cylinder 501, it is screwed and fixed to the holding cylinder 1, so that the entire insulating telescopic rod is in a stable contracted state, which is convenient for carrying and moving.

[0027] The support assembly includes a grip rod 7 vertically and slidably connected to the extension plate 102. The bottom end of the grip rod 7 passes through the connecting plate 702 and is fixed with a limit block 701. The top end is fixed with a horizontal connecting plate 702, and an inner connecting ring 703 is fixed to the inner end of the connecting plate 702. A plurality of vertical elastic blocks 704 are evenly fixed on the inner side wall of the connecting ring 703 along the circumferential direction. The elastic blocks 704 are in contact with the upper outer side wall of the second telescopic cylinder 3, so as to provide a certain supporting effect for the second telescopic cylinder 3 through the elastic blocks 704, and through the connection with the second telescopic cylinder 3 and the extension plate 102, the grip rod 7 is located above one side of the grip cylinder 1. Furthermore, it is convenient for the user to stably hold and test the insulating telescopic rod and the electroscope 504 through the grip cylinder 1 and the grip rod 7. On the upper part of the outer side wall of the grip cylinder 1, a plurality of vertical sliding grooves 103 are provided corresponding to the positions of the elastic blocks 704. The bottom end of the elastic block 704 is set as an inclined surface, and an inclined guiding surface is correspondingly provided at the top end of the sliding groove 103. When the connecting ring 703 moves downward, the top end of the spring block extends into the sliding groove 103 and contacts through the inclined surface and the guiding surface, so that the elastic block 704 can smoothly enter the corresponding sliding groove 103, and then when moving downward subsequently, the elastic block 704 is squeezed and stored in the sliding groove 103.

[0028] The outer side wall of the grip cylinder 1 is provided with a first anti-slip sleeve. A groove is provided around the middle side wall of the grip rod 7, and a second anti-slip sleeve is provided in the groove, so that the outer side wall of the second anti-slip sleeve does not exceed the outer side walls of the two side segments of the grip rod 7, so that the grip rod 7 can still slide relative to the extension plate 102 after installing the second anti-slip sleeve, and the anti-slip effect is provided by setting the first anti-slip sleeve and the second anti-slip sleeve, improving the grip stability of the user.

[0029] The electroscope 504 includes a tester 602 fixed in the inner cavity of the electroscope 504 housing. The top end of the tester 602 is fixed with a test contact 601, and the test contact 601 is located outside the housing. The tester 602 is connected with an A / D conversion circuit 603. The A / D conversion circuit 603 is connected with a CPU board 604 and a rechargeable battery for providing power. On one side of the upper part of the electroscope 504, an LED screen 606 is provided, and a speaker 605 is provided at the lower part. Both the LED screen 606 and the speaker 605 are connected with the CPU board 604. The LED screen 606 will display the current voltage and conduct voice broadcast through the speaker 605 for on-site personnel to accurately master the energized situation of the equipment.

[0030] On the side wall of the installation groove 503, a plurality of rows of sound outlet holes are evenly provided along the circumferential direction of the center of the side wall corresponding to the position of the speaker 605 of the electroscope 504. By providing the sound outlet holes on the installation groove 503, when the installation groove 503 provides functions such as support and protection for the electroscope, it will not affect the sound output of the speaker 605.

[0031] Embodiment 2

[0032] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that positioning components are provided at the bottoms of the first telescopic cylinder 2, the second telescopic cylinder 3, and the third telescopic cylinder 4, and positioning holes corresponding to the positioning components are provided on the upper parts of the side walls of the grip cylinder 1, the first telescopic cylinder 2, and the second telescopic cylinder 3. The positioning component includes a slot located at the center of the bottom of the inner cavity of the grip cylinder 1 or the telescopic cylinder. The bottom end of the slot is closed, and outlet openings are symmetrically provided on the upper parts of the two side walls of the slot. A positioning block 802 is slidably connected in the outlet opening. A spring plate 803 is fixed to the bottom of the inner end of the positioning block 802. A spring is connected between the spring plate 803 and the lower side wall of the slot. An inclined surface is provided at the top of the inner end of the positioning block 802, and an iron block 804 is fixed on the inclined surface. The outer end of the positioning block 802 of the upper telescopic cylinder is located in the positioning block 802 of the adjacent lower telescopic cylinder or the grip cylinder 1. Plugs 8 are fixed to the bottom ends of the second telescopic cylinder 3, the third telescopic cylinder 4, and the telescopic shaft 5. The plugs 8 are slidably connected to the slots, and inclined surfaces are symmetrically provided on both sides of the bottom. Magnet plates 801 are fixed on the inclined surfaces.

[0033] When the insulating telescopic rod extends outwards, each positioning block 802 gradually moves to the corresponding positioning groove, and extends out into the positioning groove under the action of the spring. The positions between the grip cylinder 1 and the telescopic cylinders, and between the telescopic cylinders are restricted by the positioning block 802 and the positioning groove, improving the stability of the insulating telescopic rod. The telescopic shaft 5 extends out under the action of the spring without being positioned, so that during the live-line measurement, the test contact 601 can be kept in contact with the test equipment under the action of the spring;

[0034] When the test is over, move the telescopic shaft 5 towards the grip cylinder 1, compress the spring in the third telescopic cylinder, and the plug 8 at the bottom of the telescopic shaft 5 extends deep into the slot and approaches the positioning block 802. Then, through the adsorption of the magnet plate 801, the iron blocks 804 on both sides drive the positioning block 802 and the spring plate 803 to stretch the spring and move inwards, so as to disengage the positioning block 802 from the positioning groove, enabling the third telescopic cylinder 4 to move downwards. In the same way, the positioning of the second telescopic cylinder 3 and the first telescopic cylinder 2 is cancelled in turn, and then the insulating telescopic rod can be retracted.

[0035] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0036] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An intelligent electroscope for switching operation of ±500 kV converter substation, comprising an insulating telescopic rod and an electroscope instrument (504) fixed to the top end of the insulating telescopic rod. It is characterized in that: The insulating telescopic rod includes a grip tube (1). An annular protective platform (101) is fixed to the upper part of the outer side wall of the grip tube (1). One side of the protective platform (101) is fixed with an outward-extending extension plate (102), and a support assembly is provided on the extension plate (102). Above the grip tube (1), a first telescopic tube (2), a second telescopic tube (3) and a third telescopic tube (4) are sequentially arranged from bottom to top. The diameters of the three telescopic tubes decrease sequentially from bottom to top. The bottom ends are all set as closed ends and are slidably connected to the adjacent telescopic tube below and are connected to the bottom surface of the inner cavity of the telescopic tube below through a spring; The bottom end of the first telescopic tube (2) is connected to the grip tube (1) through a spring. A telescopic shaft (5) is connected to the inner cavity of the third telescopic tube (4) through a spring. The top end of the telescopic shaft (5) extends out and is fixed with a mounting groove (503), and the electroscope instrument (504) is installed in the mounting groove (503). The top of the telescopic shaft (5) is also rotatably connected with a rotating cylinder (502). A threaded cylinder (501) is fixed to the bottom end of the rotating cylinder (502). The upper part of the outer side wall of the grip tube (1) is provided with threads and is correspondingly connected to the threaded cylinder (501) through the threads; The support assembly includes a grip rod (7) vertically slidably connected to the extension plate (102). The bottom end of the grip rod (7) passes through the extension plate (102) and is fixed with a limit block (701). The top end is fixed with a horizontal connecting plate (702), and an inner connecting ring (703) is fixed to the inner side end of the connecting plate (702). A plurality of vertical elastic blocks (704) are evenly fixed to the inner side wall of the connecting ring (703) along the circumferential direction. The elastic blocks (704) are in contact with the lower outer side wall of the second telescopic tube (3). A plurality of vertical sliding grooves (103) are provided at the corresponding positions of the upper part of the outer side wall of the grip tube (1) for the elastic blocks (704). The bottom end of the elastic block (704) is set as an inclined surface, and an inclined guiding surface is correspondingly provided at the top end of the sliding groove (103); The outer side wall of the grip tube (1) is provided with a first anti-slip sleeve. A groove is provided around the middle side wall of the grip rod (7), and a second anti-slip sleeve is provided in the groove; The electroscope instrument (504) includes a tester (602) fixed to the inner cavity of the electroscope instrument (504) housing. A test contact (601) is fixed to the top end of the tester (602), and the test contact (601) is located outside the housing. The tester (602) is connected with an A / D conversion circuit (603). The A / D conversion circuit (603) is connected with a CPU board (604) and a rechargeable battery. An LED screen (606) is provided at the upper part of one side of the electroscope instrument (504), and a speaker (605) is provided at the lower part. Both the LED screen (606) and the speaker (605) are connected to the CPU board (604); On the side wall of the installation groove (503), a plurality of sound outlet holes are evenly arranged along the circumferential direction of the center of the side wall corresponding to the position of the horn (605) of the live-line detector (504). Positioning components are provided at the bottoms of the first telescopic cylinder (2), the second telescopic cylinder (3) and the third telescopic cylinder (4), and positioning holes corresponding to the positioning components are provided on the upper parts of the side walls of the grip cylinder (1), the first telescopic cylinder (2) and the second telescopic cylinder (3). The positioning component includes a slot located at the center of the bottom of the inner cavity of the grip cylinder (1) or the telescopic cylinder. The bottom end of the slot is closed, and extension ports are symmetrically provided on the upper parts of the two side walls of the slot. A positioning block (802) is slidably connected in the extension port. A spring plate (803) is fixed to the bottom of the inner end of the positioning block (802). A spring is connected between the spring plate (803) and the lower side wall of the slot. An inclined surface is provided at the top of the inner end of the positioning block (802), and an iron block (804) is fixed on the inclined surface. Plug blocks (8) are fixed to the bottom ends of the second telescopic cylinder (3), the third telescopic cylinder (4) and the telescopic shaft (5). The plug blocks (8) are slidably connected with the slots, and inclined surfaces are symmetrically provided on both sides of the bottom. Magnet plates (801) are fixed on the inclined surfaces.

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