CN215415725U

CN215415725U - Cylinder type charging and discharging mechanism of high-voltage signal generator

Info

Publication number: CN215415725U
Application number: CN202121816677.4U
Authority: CN
Inventors: 王辉; 徐娟; 孙波; 赵国春; 郭立志; 刘伟; 卢梅; 韩露露
Original assignee: Zibo Xinyijie Electric Co ltd
Current assignee: Zibo Xinyijie Electric Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-01-04
Anticipated expiration: 2031-08-05

Abstract

A cylinder type charging and discharging mechanism of a high-voltage signal generator belongs to the technical field of cable fault testing. The method is characterized in that: including casing (5), be provided with a set of cylinder side by side in casing (5) inner chamber: the electrode plate comprises a left air cylinder (1) and a right air cylinder (2), piston rods of the left air cylinder (1) and the right air cylinder (2) face the bottom of an inner cavity of a shell (5), electrode plates (6) are fixed at the tail ends of the left air cylinder (1) and the right air cylinder (2) respectively, an electrode plate (7) is arranged at the bottom of the inner cavity of the shell (5), and the electrode plates (6) are in contact with or separated from the electrode plates (7) under the driving of the corresponding piston rods of the air cylinders. In the cylinder type charging and discharging mechanism of the high-voltage signal generator, the cylinder is arranged, the separation and contact of the electrode plate and the electrode plate are driven by the cylinder, the charging of a high-voltage capacitor in the high-voltage signal generator and the discharging of the high-voltage capacitor to a cable to be tested are realized, and various defects in the prior art when the electric energy switching is completed through the on-off of a relay are avoided.

Description

Cylinder type charging and discharging mechanism of high-voltage signal generator

Technical Field

A cylinder type charging and discharging mechanism of a high-voltage signal generator belongs to the technical field of cable fault testing.

Background

With the development of society, the application of power cables is more and more extensive, and the cable power supply has many advantages, but as the impact of factors such as system expansion, the longer the operation time is, the more frequent the cable fault is, and in order to improve the reliability of power supply, the cable fault must be repaired in a short time. The cable test high-voltage signal generator is mainly used for testing high resistance and flashover faults of a power cable, can generate a direct-current high-voltage pulse signal to enable a fault point of the cable to be punctured and discharged, and is matched with a cable fault distance measurement and fixed-point instrument to measure and fix the distance.

When the cable is tested, a charging and discharging mechanism is needed to charge the capacitor, and the electric energy stored in the capacitor is applied to the cable. The traditional charging and discharging mechanism is generally realized through a relay, and the switching of electric energy is completed by controlling the on-off of the relay. The traditional charging and discharging mechanism realized through a relay has the following defects: (1) when the relay is used for implementation, a control circuit and a control process of the relay are complex. (2) Because its voltage class is higher when testing the cable shaft, consequently cause the damage of relay easily, life is shorter. (3) The high-voltage generator is easily damaged after the relay is damaged, and certain potential safety hazards exist.

Disclosure of Invention

The technical problem to be solved by the utility model is as follows: overcome prior art's not enough, provide one kind through setting up the cylinder, drive separation and the contact of electrode slice and plate electrode through the cylinder, realize the high voltage capacitor's among the high voltage signal generator charge and the high voltage capacitor is to the discharge of the cable that awaits measuring, the cylinder type charge-discharge mechanism of high voltage signal generator of various defects when having avoided accomplishing the electric energy switch-over through the break-make of relay among the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: this high pressure signal generator's cylinder formula charge-discharge mechanism, its characterized in that: including the casing, be provided with a set of cylinder side by side in the casing inner chamber: the electrode plates are arranged at the bottom of the inner cavity of the shell and are in contact with or separated from the electrode plates under the driving of the corresponding cylinder piston rods.

Preferably, a partition is horizontally arranged in the middle of the inner cavity of the shell and divides the interior of the shell into an upper cavity and a lower cavity, the left air cylinder and the right air cylinder are located in the upper cavity, and piston rods of the left air cylinder and the right air cylinder penetrate through the partition and extend into the lower cavity of the shell.

Preferably, the lower parts of the piston rods of the left air cylinder and the right air cylinder are provided with insulating columns, and the electrode plates are arranged at the bottoms of the insulating columns.

Preferably, an insulating plate is disposed at the bottom of the case, and the electrode plate is disposed at the upper portion of the insulating plate.

Preferably, the electrode plate is connected with a high-voltage capacitor in the high-voltage signal generator.

Preferably, the electrode plate is connected with a high-voltage generator in the high-voltage signal generator.

Compared with the prior art, the utility model has the beneficial effects that:

in high voltage signal generator's cylinder type charge-discharge mechanism, through setting up the cylinder, drive separation and the contact of electrode slice and plate electrode through the cylinder, realize charging and high-voltage capacitor to the cable that awaits measuring of high-voltage capacitor in the high voltage signal generator, various defects when having avoided accomplishing the electric energy switch-over through the break-make of relay among the prior art, greatly reduced prior art in the complexity of control circuit and control process, service life has been prolonged, and can not cause the damage to other devices in the high voltage signal generator, the potential safety hazard has been eliminated.

Drawings

Fig. 1 is a schematic structural diagram of a cylinder type charging and discharging mechanism of a high-voltage signal generator.

Wherein: 1. the air cylinder comprises a left air cylinder 2, a right air cylinder 3, a partition 4, an insulating column 5, a shell 6, an electrode plate 7, an electrode plate 8 and an insulating plate.

Detailed Description

Fig. 1 shows a preferred embodiment of the present invention, which is further described below with reference to fig. 1.

As shown in fig. 1, a cylinder type charging and discharging mechanism (hereinafter referred to as charging and discharging mechanism) of a high voltage signal generator includes a housing 5, a partition 3 is transversely disposed in the middle of an inner cavity of the housing 5, and the partition 3 partitions the inner cavity of the housing 5 into an upper chamber and a lower chamber. Two cylinders are arranged side by side in the upper chamber of the housing 5: the piston rods of the left cylinder 1 and the right cylinder 2 downwards penetrate through the partition 3 to enter the lower cavity, the piston rods of the left cylinder 1 and the right cylinder 2 are respectively and vertically fixed with an insulating column 4 in the lower cavity, and the bottom of the insulating column 4 is fixed with an electrode plate 6 made of metal.

An insulating plate 8 is horizontally placed at the bottom of a cavity below the shell 5, an electrode plate 7 made of metal is arranged above the insulating plate 8, and after a piston rod of the cylinder (the left cylinder 1 and the right cylinder 2) is output, an electrode plate 6 fixed at the bottom of the piston rod is in contact with the electrode plate 7.

The specific working process and working principle are as follows:

the charging and discharging mechanism is provided with two same structures: the charging and discharging device comprises a first charging and discharging mechanism and a second charging and discharging mechanism, wherein electrode plates 7 in the two charging and discharging mechanisms are respectively connected with two poles of a high-voltage capacitor (not shown in the figure). The positive pole and the negative pole of a high-voltage generator (not shown in the figure) respectively enter the two charging and discharging mechanisms and are connected with the electrode plate 6 at the lower part of the left air cylinder 1 in the two charging and discharging mechanisms. An electrode plate 6 at the lower part of the right cylinder 2 in the first charging and discharging mechanism is connected with a cable to be tested, an electrode plate 6 at the lower part of the right cylinder 2 in the second charging and discharging mechanism is connected with an electrode plate 7 in the first charging and discharging mechanism, and the electrode plate 7 in the second charging and discharging mechanism is also connected with a testing bottom line.

Firstly, the left cylinders 1 in the two charging and discharging mechanisms output, so that electrode plates 6 at the bottoms of the two left cylinders 1 are in contact with electrode plates 7 in respective shells 5, and at the moment, the positive electrode and the negative electrode of the high-voltage generator are respectively connected with a high-voltage capacitor through the respective electrode plates 6 and the electrode plates 7 to charge the high-voltage capacitor. When the voltage at the two ends of the high-voltage capacitor reaches a preset voltage, the left air cylinders 1 in the two charging and discharging mechanisms are reset, so that the electrode plates 6 at the bottoms of the two left air cylinders 1 are separated from the electrode plates 7 in the respective shells 5.

Then the right cylinder 2 output in the first charge-discharge mechanism makes the electrode plate 6 at the bottom contact with the electrode plate 7, at this time, one pole of the high-voltage capacitor is connected with the cable to be tested through the electrode plate 6 and the electrode plate 7 in the first charge-discharge mechanism, and the other pole is connected with the test ground wire through the electrode plate 7 in the second charge-discharge mechanism, so that the voltage is loaded on the cable to be tested.

After the test is finished, the left cylinder 1 and the right cylinder 2 in the first charging and discharging mechanism reset, the left cylinder 1 in the second charging and discharging mechanism resets, and the right cylinder 2 in the second charging and discharging mechanism outputs to enable the electrode plate 6 at the bottom of the right cylinder to be in contact with the electrode plate 7. After the electrode plate 6 in the second charge-discharge mechanism is contacted with the electrode plate 7, the two electrode plates 7 in the first charge-discharge mechanism and the second charge-discharge mechanism are in short circuit, so that the two electrodes of the high-voltage capacitor are in short circuit, and a protection effect is achieved.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a cylinder type charge-discharge mechanism of high-voltage signal generator which characterized in that: including casing (5), be provided with a set of cylinder side by side in casing (5) inner chamber: the electrode plate comprises a left air cylinder (1) and a right air cylinder (2), piston rods of the left air cylinder (1) and the right air cylinder (2) face the bottom of an inner cavity of a shell (5), electrode plates (6) are fixed at the tail ends of the left air cylinder (1) and the right air cylinder (2) respectively, an electrode plate (7) is arranged at the bottom of the inner cavity of the shell (5), and the electrode plates (6) are in contact with or separated from the electrode plates (7) under the driving of the corresponding piston rods of the air cylinders.

2. The cylinder type charge and discharge mechanism of a high voltage signal generator according to claim 1, wherein: the middle part of the inner cavity of the shell (5) is horizontally provided with a partition (3), the partition (3) divides the inner space of the shell (5) into an upper cavity and a lower cavity, the left cylinder (1) and the right cylinder (2) are positioned in the upper cavity, and piston rods of the left cylinder (1) and the right cylinder (2) penetrate through the partition (3) and extend into the lower cavity of the shell (5).

3. The cylinder type charge and discharge mechanism of a high voltage signal generator according to claim 1, wherein: and the lower parts of the piston rods of the left cylinder (1) and the right cylinder (2) are provided with insulating columns (4), and the electrode plates (6) are arranged at the bottoms of the insulating columns (4).

4. The cylinder type charge and discharge mechanism of a high voltage signal generator according to claim 1, wherein: an insulating plate (8) is arranged at the bottom of the shell (5), and the electrode plate (7) is placed on the upper portion of the insulating plate (8).

5. The cylinder type charge and discharge mechanism of a high voltage signal generator according to claim 1, wherein: the electrode plate (7) is connected with a high-voltage capacitor in the high-voltage signal generator.

6. The cylinder type charge and discharge mechanism of a high voltage signal generator according to claim 1, wherein: the electrode plate (6) is connected with a high-voltage generator in the high-voltage signal generator.