CN110376423A - A kind of electric power apparatus examination high voltage electroscope - Google Patents

Abstract

The invention relates to the technical field of circuit detection, and discloses a high-voltage electroscope for power equipment maintenance, including a handle, a ferrule, a contact electrode, a self-check switch, and an insulating sleeve. The ferrule is installed on the top of the handle, and the contact electrode is installed on the The top of the ferrule, the self-test switch is installed on the ferrule, the insulating sleeve is installed on the handle, the positioning seat is installed on the ferrule, the inner rotation of the positioning seat is connected with the positioning rod, and the positioning rod is equipped with first electrode. Through the cooperation between the first electrode and the wire, the high voltage electroscope can maximize the contact between the contact electrode and the measured object when testing the circuit or equipment, so that the current on the equipment or circuit is transmitted to the electroscope, so that The area of the contact electrode is increased, and the current of each part can be transmitted to the electroscope through the first electrode and the contact electrode, and at the same time, the probability of the contact electrode being inserted into the split wire is reduced when the contact electrode is in use, thereby increasing the test accuracy of the electroscope. time sensitivity.

Description

A high-voltage electroscope for power equipment maintenance

technical field

The invention relates to the technical field of circuit detection, in particular to a high-voltage electroscope for power equipment maintenance.

Background technique

High-voltage electroscope, the acousto-optic instruction made of electronic integrated circuit, has stable and reliable performance, has the characteristics of full circuit self-inspection function and strong anti-interference, GD series high-voltage electroscope is suitable for 220V-500V, 6KV, 10KV, 35KV , 110KV, 220KV, 500KV AC transmission and distribution lines and equipment, whether it is day or night, indoor substation stations or outdoor overhead lines, can be tested correctly and reliably. Essential safety gear.

With the development of China's power system, there are more and more high-voltage power grids. As a necessary safety tool for high-voltage maintenance, the demand for high-voltage electroscopes is also increasing. The working principle of the existing high-voltage electroscopes is shown in Figure 5. Personnel hold a high-voltage electroscope and use the contacts of the electroscope to contact the electrical equipment being tested. If there is voltage in the electrical equipment, a physical reaction will occur at the other end of the high-voltage electroscope. It is judged by the sound or light of the diode whether the equipment is During the detection process of charged and high-voltage electroscopes, due to the large area of the conductive body of the equipment or the high humidity around the conductors, the electric field distribution on the surface of the conductor and its surroundings is similar to that of a uniformly charged plane, which is a uniform electric field. When the point selection is in the middle of a conductor with a large area (such as a connecting plate for equipment wiring), the electroscope is in a uniform electric field, its axial potential gradient is small, and the current flowing through the capacitance to ground is small, resulting in the failure of the working circuit to start. , the electroscope will not emit sound and light indications, so that the staff cannot know whether the equipment or circuit has electricity, and in the prior art, in order to increase the sensitivity of the electroscope, the length of the electrode will be increased, the contact electrode is too long, and the touch process It is difficult to operate, and the contact electrode is easy to penetrate into the split wire, which will not increase the contact electrode effect, further reduce the sensitivity of the high voltage electroscope, affect the normal test of the circuit, and increase the hidden danger of the circuit during test.

Contents of the invention

In view of the shortcomings of the above-mentioned background technology, the present invention provides a high-voltage electroscope for power equipment maintenance, which has the advantages of high sensitivity, fast test speed, and test safety, and solves the problems raised by the background technology.

The invention provides the following technical solutions: a high-voltage electroscope for power equipment maintenance, including a handle, ferrule, contact electrode, self-check switch, insulating sleeve, the ferrule is installed on the top of the grip, and the contact electrode is installed on the top of the ferrule , the self-check switch is installed on the ferrule, the insulating sleeve is installed on the handle, the ferrule is installed with a positioning seat, the inner rotation of the positioning seat is connected with a positioning rod, and the first electrode is installed on the positioning rod, The first electrode and the contact electrode are coiled with wires, the end of the contact electrode is connected to a limit seat, and the limit seat is connected to a limit rod in rotation, and an aluminum strip is installed on the limit rod. A PCB board is installed inside the ferrule, and a circuit is laid on the PCB board. The outer wall of the aluminum bar is slidably connected to the end of the circuit. The end of the circuit is electrically connected to a cable, and the end of the cable is electrically connected to There are voltage-controlled horns.

Preferably, one end of the positioning rod penetrates and extends to the outside of the positioning seat and is threaded, and the positioning rod is threaded with a nut located outside the positioning seat, and the diameter of the nut is larger than that of the positioning rod and the positioning seat. diameter at the place.

Preferably, a first magnetic sleeve is placed on the first electrode, a second magnetic sleeve is placed on the contact electrode, and the diameters of the first magnetic sleeve and the second magnetic sleeve are respectively the same as those of the first electrode and the contact electrode. The diameters are equal, and the material of the first magnetic sleeve and the second magnetic sleeve is carbon steel magnet.

Preferably, the inner wall of the aluminum strip is connected with an insulating block, the side of the insulating block is fixedly connected with a baffle, the side of the baffle is fixedly connected with a spring, the side of the baffle is fixedly connected with a fixing rod, and The end of the rod extends into the interior of the spring.

The present invention has the following beneficial effects:

1. The high-voltage electroscope for power equipment maintenance, through the cooperation between the first electrode and the wire, enables the high-voltage electroscope to maximize the contact between the contact electrode and the measured object when testing the circuit or equipment, so that the equipment or The current on the circuit is transmitted to the electroscope, so that the area of the contact electrode is increased, and the current of each part can be transmitted to the electroscope through the first electrode and the contact electrode, and at the same time, the contact electrode is reduced when it is in use. The probability inside the wire increases the sensitivity of the electroscope during testing.

2. The high-voltage electroscope for power equipment maintenance, through the cooperation between the first magnetic sleeve and the second magnetic sleeve, makes the contact area between the contact electrode and the first electrode increase as much as possible when testing the equipment. , so that the current on the equipment is quickly transmitted to the electroscope, and at the same time, through the cooperation between the aluminum strip and the line, when the current is on the electroscope, the aluminum strip is stretched to both sides by the same charge to contact the line, forming a power circuit , to transmit the current to the voltage-controlled horn to remind the tester, thereby increasing the safety of the electroscope in use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram during circuit detection;

Fig. 3 is the schematic diagram of enlarged structure of aluminum bar;

Fig. 4 is the structural representation of positioning seat;

Fig. 5 is a schematic structural diagram of an existing electroscope.

In the figure: 1. Grip; 2. Ferrule; 3. Contact electrode; 4. Self-check switch; 5. Insulation sleeve; 6. Positioning seat; 7. Positioning rod; 8. First electrode; 9. Nut; 10 , the first magnetic sleeve; 11, wires; 12, the second magnetic sleeve; 13, limit seat; 14, limit rod; 15, aluminum bar; 16, PCB board; 17, line; 18, cable; 19, pressure Horn control; 20, insulating block; 21, baffle plate; 22, spring.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1-4, a high-voltage electroscope for power equipment maintenance, including a handle 1, a ferrule 2, a contact electrode 3, a self-test switch 4, and an insulating sleeve 5. The ferrule 2 is installed on the top of the handle 1, and the contact The electrode 3 is installed on the top of the ferrule 2, the self-test switch 4 is installed on the ferrule 2, the insulating sleeve 5 is installed on the handle 1, the ferrule 2 is equipped with a positioning seat 6, and the internal rotation of the positioning seat 6 Connected with a positioning rod 7, the positioning seat and the positioning rod 7 are insulating materials to increase the stability of the electroscope in use. The first electrode 8 is installed on the positioning rod 7, and the first electrode 8 is connected to the contact electrode 3. A wire 11 is coiled, and the length of the wire 11 can be customized and controlled. Its main function is to transfer the charge attached to the first electrode 8 to the contact electrode 3. The seat 13 is rotatably connected to the limit rod 14, the limit seat 13 and the limit rod 14 are made of conductive material, so that the charge on the contact electrode 3 can be quickly transferred to the aluminum strip 15, so that the aluminum strip 15 can be stretched at different angles , the larger the current transmitted, the larger the angle of the aluminum strip 15 is, the aluminum strip 15 is installed on the limit rod 14, the PCB board 16 is installed inside the ferrule 2, and the PCB board 16 The circuit 17 is laid, the setting of the PCB board 16, the circuit 17 and the voltage-controlled horn 19 are all prior art, and the electrical connection between them is also the prior art. The outer wall of the aluminum strip 15 is slidingly connected to the end of the circuit 17 , the end of the line 17 is electrically connected to a cable 18, and the end of the cable 18 is electrically connected to a voltage-controlled horn 19. When the aluminum strip 15 contacts the line 17, the PCB board 16, the line 17, the cable 18 and the voltage-controlled The speakers 19 are connected.

Wherein, one end of the positioning rod 7 penetrates and extends to the outside of the positioning seat 6 and is provided with threads, and the positioning rod 7 is threaded with a nut 9 located at the outside of the positioning seat 6, and the diameter of the nut 9 is larger than that of the positioning rod 7. The diameter of the junction with the positioning seat 6, so that the first electrode 8 can rotate different angles, so that the first electrode 8 can increase or decrease the distance between the contact electrode 3, so that the electroscope can quickly When there is contact with the object under test, and when testing large equipment, the current can be concentrated on the contact electrode 3, so that the electroscope can be triggered quickly, reducing the failure of the electroscope in use, thereby increasing the safety of the electroscope in use So that the electroscope can accurately detect whether the circuit contains electricity.

Wherein, the first magnetic cover 10 is set on the first electrode 8, the second magnetic cover 12 is set on the contact electrode 3, and the diameters of the first magnetic cover 10 and the second magnetic cover 12 are respectively the same as those of the first magnetic cover 10. The diameters of the electrode 8 and the contact electrode 3 are equal, and the material of the first magnetic cover 10 and the second magnetic cover 12 is a carbon steel magnet, so that the first electrode 8 and the contact electrode 3 can be adsorbed on the device, increasing the distance between the electrode and the device. The contact area between them makes the current on the device transmit to the aluminum strip 15 through the electrodes, and passes through the three electrodes at the same time, so that the current is quickly concentrated together, increasing the intensity of the current during transmission, thereby improving the quickness of the electroscope when it is started .

Wherein, the inner wall of the aluminum bar 15 is connected with an insulating block 20, the side of the insulating block 20 is fixedly connected with a baffle 21, the side of the baffle 21 is fixedly connected with a spring 22, and the side of the baffle 21 is fixed A fixed rod is connected, and the end of the fixed rod extends to the inside of the spring 22, so that the aluminum strip 15 will not sway inwardly under the force, and at the same time, the aluminum strip 15 will not move to both sides during use, increasing the power of the electroscope during use. Stability, through the effect of the spring 22, the aluminum strip 15 can only be stretched to both sides when it is charged.

The working principle is that the staff hold the handle 1, expand and contract the electroscope according to the length of the measured object, then straighten the electroscope, and contact the measured object with the contact electrode 3 and the first electrode 8, and the charge on the measured object is transmitted to the limit. On the seat 13 and the aluminum strip 15, the aluminum strip 15 is stretched to both sides by the same charge attached, and during the stretching process, the outer wall of the aluminum strip 15 gradually touches the line 17 on the PCB board 16, and then the line 17 is connected. The voltage-controlled horn 19 is energized to remind the operator whether the object under test is electrified.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (4)

1. A high-voltage electroscope for power equipment maintenance, including a handle (1), a ferrule (2), a contact electrode (3), a self-test switch (4), an insulating sleeve (5), and a ferrule (2) for installation On the top of the handle (1), the contact electrode (3) is installed on the top of the ferrule (2), the self-test switch (4) is installed on the ferrule (2), and the insulating sleeve (5) is installed on the handle (1) , characterized in that: a positioning seat (6) is installed on the ferrule (2), and a positioning rod (7) is connected to the inner rotation of the positioning seat (6), and a second positioning rod (7) is installed on the positioning rod (7). An electrode (8), the first electrode (8) and the contact electrode (3) are coiled with a wire (11), the end of the contact electrode (3) is connected to a limit seat (13), the limit The seat (13) is rotatably connected with a limit rod (14), and an aluminum strip (15) is installed on the limit rod (14), and a PCB board (16) is installed inside the ferrule (2), and the A circuit (17) is laid on the PCB (16), the outer wall of the aluminum strip (15) is slidingly connected to the end of the circuit (17), and the end of the circuit (17) is electrically connected to a cable (18), so The end of the cable (18) is electrically connected with a voltage-controlled horn (19). 2. A high-voltage electroscope for power equipment maintenance according to claim 1, characterized in that: one end of the positioning rod (7) penetrates and extends to the outside of the positioning seat (6) and is threaded, the The positioning rod (7) is threaded with a nut (9) located outside the positioning seat (6), and the diameter of the nut (9) is larger than the diameter of the joint between the positioning rod (7) and the positioning seat (6). 3. A high-voltage electroscope for power equipment maintenance according to claim 1, characterized in that a first magnetic sleeve (10) is placed on the first electrode (8), and a magnetic sleeve (10) is placed on the contact electrode (3). The second magnetic sleeve (12) is set, the diameters of the first magnetic sleeve (10) and the second magnetic sleeve (12) are respectively equal to the diameters of the first electrode (8) and the contact electrode (3), the first The first magnetic sleeve (10) and the second magnetic sleeve (12) are made of carbon steel magnets. 4. A high-voltage electroscope for power equipment maintenance according to claim 1, characterized in that: the inner wall of the aluminum strip (15) is connected with an insulating block (20), and the side of the insulating block (20) is fixed A baffle (21) is connected, the side of the baffle (21) is fixedly connected with a spring (22), the side of the baffle (21) is fixedly connected with a fixed rod, and the end of the fixed rod extends to the spring (22 )internal.