CN204422594U - A kind of high voltage direct current generator - Google Patents

Abstract

The utility model relates to a high-voltage test equipment, which belongs to the field of electric power test equipment, in particular to a DC high-voltage generator. Including: a transformer, a pressure doubler cylinder connected to the transformer, and a product to be tested connected to the output end of the pressure doubler cylinder, wherein: the pressure doubler cylinder includes: a column, a cylinder sleeved on the column, and a high-voltage cylinder located on the top of the cylinder. Leading wires, the column is fixed on the legs, and the legs are provided with grounding terminals and intermediate frequency connection terminals; the transformer is connected to the intermediate frequency connection terminals, and the high voltage lead wires are connected to the product to be tested. Therefore, the utility model has the following advantages: 1. The design is reasonable, the structure is simple, and the cost is low; 2. The high-frequency voltage doubler circuit and large voltage feedback are adopted, the output voltage is stable, and the ripple coefficient is small; 3. The fineness of voltage regulation is good , High adjustment accuracy.

Description

A DC high voltage generator

technical field

The utility model relates to a high-voltage test equipment, which belongs to the field of electric power test equipment, in particular to a DC high-voltage generator.

Background technique

The DC high-voltage tester is the necessary equipment for the power department of the power department, industrial and mining, metallurgy, steel and other enterprises to conduct DC withstand voltage tests on zinc oxide arresters, power cables, transformers, generators and other high-voltage electrical equipment.

However, the existing DC high-voltage tester has the following problems: (1) The capacity of the test equipment is small, which cannot meet the requirements of the UHV test voltage level; (2) The structure of the equipment is complex, the cost is high, and the economy is poor.

Utility model content

The utility model mainly solves the technical problems that the test equipment in the prior art has small capacity, cannot meet the requirements of the UHV test voltage level, and the equipment structure is complicated, the cost is high, and the economy is poor; it provides a DC high voltage generator device. The tester is reasonable in design, simple in structure, low in cost, and adopts a high-frequency voltage doubler circuit and large voltage feedback, with high output voltage stability, small ripple coefficient, good voltage adjustment fineness, and high adjustment accuracy.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

A DC high voltage generator, comprising: a transformer, a voltage multiplier cylinder connected to the transformer, and a product to be tested connected to the output end of the voltage multiplier cylinder, wherein: the pressure doubler cylinder includes: a column, a cylinder sleeved on the column 1. The high-voltage lead-out wire located at the top of the cylinder, the column is fixed on the support foot, and the ground terminal and the intermediate frequency connection terminal are arranged on the support foot; the transformer is connected to the intermediate-frequency connection terminal, and the high-voltage lead-out wire is connected to the products are connected.

Optimized, the above-mentioned DC high-voltage generator, the ground terminal of the transformer, the ground terminal of the pressure doubler cylinder, and the ground terminal of the product to be tested are connected to each other through a ground wire and then connected to a discharger, and the discharger is grounded .

Optimally, the above-mentioned DC high voltage generator, the transformer includes: a mutual induction coil T, the high voltage end of the secondary side of the mutual induction coil T is connected to the diode D, the resistor R and the capacitor C in turn and then grounded, the The connection point of the resistor R and the capacitor C is connected to the high-voltage end of the test object, and the low-voltage end of the secondary side of the mutual induction coil T is connected to the ground end of the test object and then grounded.

In an optimized DC high-voltage generator, the connection point between the resistor R and the capacitor C is connected to the high-voltage terminal of the product to be tested through a high-voltage microammeter.

Optimally, in the aforementioned DC high voltage generator, the ground terminal of the product to be tested is grounded through a high voltage microammeter.

Optimally, in the above-mentioned DC high-voltage generator, the cylinder is fixed on the column through a flange.

Therefore, the utility model has the following advantages: 1. The design is reasonable, the structure is simple, and the cost is low; 2. The high-frequency voltage doubler circuit and large voltage feedback are adopted, the output voltage is stable, and the ripple coefficient is small; 3. The fineness of voltage regulation is good , High adjustment accuracy.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the pressure doubler cylinder of the present invention.

Fig. 3 is a schematic diagram of the structure of the pressure doubler cylinder of the present invention after it is stretched out.

Fig. 4 is a schematic circuit diagram of the utility model.

FIG. 5 is a schematic circuit diagram of another embodiment of the present invention.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the figure, the transformer 1, the pressure doubler cylinder 2, the product to be tested 3, the discharger 4, the ground wire 5, the high voltage lead wire 201, the cylinder body 202, the ground terminal 203, the support pin 204, the intermediate frequency connection terminal 205, the flange 206, Column 207.

Example:

As shown in Figure 1, a DC high voltage generator includes: a transformer 1, a voltage doubler cylinder 2 connected to the transformer 1, and a test product 3 connected to the output end of the pressure doubler cylinder 2, wherein: the pressure doubler cylinder 2 includes: Column 207, cylinder body 202 fixed on column 207 through flange 206, high-voltage lead wire 201 located at the top of cylinder body 202, column 207 is fixed on support foot 204, and support foot 204 is provided with grounding terminal 203 and intermediate frequency connection terminal 205 ; the transformer is connected to the intermediate frequency connection terminal 205 , and the high-voltage lead-out line 201 is connected to the product 3 to be tested. The ground terminal of the transformer, the ground terminal 203 of the pressure doubler cylinder, and the ground terminal of the product 3 to be tested are connected to each other through the ground wire 5 and then connected to a discharger 4, and the discharger 4 is grounded;

As shown in Figure 2, the mutual induction coil T and the high-voltage end of the secondary side of the mutual induction coil T are connected to the diode D, the resistor R and the capacitor C in sequence and then grounded, and the connection point of the resistor R and the capacitor C is connected to the high-voltage end of the product to be tested. Connected, the low-voltage end of the secondary side of the mutual induction coil T is connected to the ground end of the product under test and then grounded. In this embodiment, the connection point of the resistor R and the capacitor C is connected to the high voltage end of the test object through a high voltage microammeter.

When the ground terminal of the test product such as zinc oxide and magnetic blowing arrester can be disassembled, the high-voltage micro-ampere meter connection can also be connected to the ground terminal of the test product, as shown in Figure 3. When it is necessary to eliminate the influence of the leakage current on the surface of the test object, a soft bare copper wire can be used to wind a few turns around the ground potential end of the test object and connect it to the shielding of the shielding wire.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although this article uses a lot of transformer 1, pressure doubler cylinder 2, test product 3, discharger 4, ground wire 5, high voltage lead wire 201, cylinder body 202, ground terminal 203, support leg 204, intermediate frequency connection terminal 205, Flange 206, column 207 and other terms, but the possibility of using other terms is not excluded. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is contrary to the spirit of the utility model.

Claims (6)

1. a high voltage direct current generator, it is characterized in that, comprise: transformer (1), times pressure cylinder (2) be connected with transformer (1), the test product to be measured (3) be connected with doubly pressure cylinder (2) output terminal, wherein: described times of pressure cylinder (2) comprising: column (207), be socketed on the cylindrical shell (202) on column (207), be positioned at the high-voltage leading-out wire (201) at cylindrical shell (202) top, described column (207) is fixed on spike (204), described spike (204) is provided with ground terminal (203) and intermediate frequency splicing ear (205), described transformer is connected with intermediate frequency splicing ear (205), and described high-voltage leading-out wire (201) is connected with test product to be measured (3).

2. a kind of high voltage direct current generator according to claim 1, it is characterized in that, be connected with a discharger (4) again after the earth terminal of the earth terminal of described transformer, the ground terminal (203) of times pressure cylinder, test product to be measured (3) is interconnected by ground wire (5), described discharger (4) ground connection.

3. a kind of high voltage direct current generator according to claim 1, it is characterized in that, described transformer comprises: mutual inductor T, ground connection after the high-pressure side of described mutual inductor T secondary side is connected with electric capacity C with diode D, resistance R successively, described resistance R is connected with the high-pressure side of test product to be measured with the tie point of electric capacity C, ground connection after the low pressure end of described mutual inductor T secondary side is connected with the earth terminal of described test product to be measured.

4. a kind of high voltage direct current generator according to claim 3, is characterized in that, described resistance R is connected with the high-pressure side of test product to be measured by a high voltage microammeter with the tie point of electric capacity C.

5. a kind of high voltage direct current generator according to claim 3, is characterized in that, the earth terminal of described test product to be measured is by a high voltage microammeter ground connection.

6. a kind of high voltage direct current generator according to claim 1, is characterized in that, described cylindrical shell (202) is fixed on described column (207) by flange (206).