CN212932832U

CN212932832U - Integrated direct-current high-voltage test device

Info

Publication number: CN212932832U
Application number: CN202020416201.0U
Authority: CN
Inventors: 姜杏辉; 董巍; 蒋胜琦; 李大山
Original assignee: Suzhou Huadian Electric Co Ltd
Current assignee: Suzhou Huadian Electric Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-04-09
Anticipated expiration: 2030-03-27

Abstract

The utility model provides an integration direct current high voltage test device, it includes: the device comprises a control measurement module, a power module, a transformer and a voltage-multiplying rectification module; the control measurement module, the power module and the transformer are integrated in a box body base, and the voltage-multiplying rectification module is pivotally connected to the box body base; the power module is connected with the transformer, the transformer is connected with the voltage-multiplying rectifying module, the voltage-multiplying rectifying module is connected with the control measuring module, and the lengths of signal lines among the control measuring module, the power module, the transformer and the voltage-multiplying rectifying module are less than 10 cm. The utility model discloses a to control measurement module, power unit, intermediate frequency transformer and voltage doubling rectifier unit and integrate together, can reduce the length of intermediate frequency output and measuring line, reduce the interference of signal, make the stability and the reliability improvement of signal. By shortening the intermediate-frequency output line, the frequency of intermediate-frequency output is improved, and the volumes of the intermediate-frequency transformer and the voltage-multiplying rectifying unit are reduced, so that the light weight is achieved.

Description

Integrated direct-current high-voltage test device

Technical Field

The utility model relates to an electrical test equipment technical field especially relates to an integration direct current high voltage test device.

Background

At present, the existing medium-direct-current high-voltage test device consists of a control box and a voltage-multiplying cylinder. In field test, a very long intermediate frequency output line and a high voltage current measuring line are needed to be electrically connected, the short one is 7-8 meters, and the long one is 20-30 meters. Therefore, the volumes of the intermediate frequency transformer and the voltage-doubling rectifying part are generally larger, the corresponding weights are heavier, the transportation is inconvenient, and the test is not convenient. Meanwhile, after the ground wire, the intermediate frequency output wire and the high-voltage and current measuring wire are used for multiple times, poor contact or disconnection can occur, and the damage to test operators can be possibly caused.

In addition, the power part of the control box outputs high-frequency alternating-current square waves, inductance and impedance are increased due to the fact that a high-frequency output wire is long, the frequency of inversion output cannot be improved, voltage is reduced due to the fact that the frequency is improved, power loss is increased, and efficiency is low. Meanwhile, the signal of the high-voltage and current measuring line is transmitted by a weak signal, the line length is easily interfered by the outside, errors and instability are easily caused in measurement, and the high-voltage and current measuring line is not ideal even if a shielding layer is added. Therefore, it is necessary to provide a further solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an integration direct current high voltage test device to overcome among the prior art direct current high voltage test device exist bulky, transport inconvenient, experimental also inconvenient technical problem.

In order to solve the technical problem, the technical scheme of the utility model is that:

an integrated direct current high voltage test device, comprising: the device comprises a control measurement module, a power module, a transformer and a voltage-multiplying rectification module;

the control measurement module, the power module and the transformer are integrated in a box body base, and the voltage-multiplying rectification module is pivotally connected to the box body base; the power module is connected with the transformer, the transformer is connected with the voltage-multiplying rectifying module, the voltage-multiplying rectifying module is further connected with the control measuring module, and the lengths of signal lines among the control measuring module, the power module, the transformer and the voltage-multiplying rectifying module are smaller than 10 cm.

As the utility model discloses an integration direct current high voltage test device's improvement, power module is located between transformer and the control measurement module to it is fixed to be connected through connecting piece and box base, the transformer is located under the voltage doubling rectifier module.

As the utility model discloses an integration direct current high voltage test device's improvement, voltage doubling rectifier module pass through the hinge buckle with box base pivotal connection.

As the utility model discloses an integration direct current high voltage test device's improvement, the bottom of box base still is provided with the walking wheel, still be connected with a pull rod on the box base.

As the utility model discloses an integration direct current high voltage test device's improvement, the transformer is intermediate frequency transformer, the signal line correspondence is intermediate frequency output and measuring line.

As the utility model discloses an integration direct current high voltage test device's improvement, voltage doubling rectifier module includes: the capacitor C1, the capacitor C2, the capacitor C3, the diode D1, the diode D2, the diode D3 and a plurality of voltage dividing resistors;

one end of the transformer is connected with a high-voltage output end of the integrated direct-current high-voltage testing device through a capacitor C2, the high-voltage output end is connected with the other end of the transformer through capacitors C3 and C2, diodes D1 to D3 are respectively connected in parallel between a branch where a capacitor C2 is located and a branch where a capacitor C1 and a capacitor C3 are located, and the high-voltage output end is further connected to the control and measurement module through voltage dividing resistors which are sequentially connected in series.

As the utility model discloses an integration direct current high voltage test device's improvement, control measurement module includes: the single chip microcomputer and the A/D conversion unit;

the single chip microcomputer is connected with the voltage-multiplying rectification module through the A/D conversion unit.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an integration direct current high voltage test device has following advantage:

1. by integrating the control measurement module, the power unit, the intermediate frequency transformer and the voltage-multiplying rectification unit, the lengths of intermediate frequency output and a measurement line can be reduced, the interference of signals is reduced, and the stability and the reliability of the signals are improved.

2. By shortening the intermediate-frequency output line, the frequency of intermediate-frequency output is improved, and the volumes of the intermediate-frequency transformer and the voltage-multiplying rectifying unit are reduced, so that the light weight is achieved.

3. The voltage-multiplying rectification unit is quickly installed by adopting a hinge buckle, and has the advantages of less wiring and convenience and quickness in test operation.

4. The box base is provided with wheels and a pull rod, so that the transportation is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic plan view of an embodiment of the integrated dc high voltage testing apparatus of the present invention, wherein the voltage-doubling rectifying module is in a laid-down state;

fig. 2 is a schematic plan view of an embodiment of the integrated dc high voltage testing apparatus of the present invention, wherein the voltage-doubling rectifier module is in a vertical state;

fig. 3 is a circuit diagram of an embodiment of the integrated dc high voltage testing apparatus of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses a shorten intermediate frequency output line, and then improve the frequency of contravariant output, can reduce intermediate frequency transformer's volume, and reduce the volume of voltage doubling rectification part to weight reduction.

As shown in fig. 1 and 2, an embodiment of the present invention provides an integrated dc high voltage testing apparatus, which includes: the control measurement module 2, the power module 1, the transformer 3 and the voltage doubling rectifying module 4.

The control measuring module 2, the power module 1 and the transformer 3 are integrated in a box body base 6. So, through the mode of integrated setting for interval between the inside module shortens, and then can reduce the length of intermediate frequency output and measuring wire, reduces the interference of signal, makes the stability and the reliability improvement of signal.

Meanwhile, by shortening the intermediate frequency output line, the inductive reactance and the impedance are almost zero and can be ignored, the frequency of the high-frequency alternating current square wave output by inversion is improved from dozens of kilohertz to twenty thousand kilohertz, the volume of the transformer 3 is reduced by at least one third, and the volume of the voltage doubling rectifying module 4 is correspondingly reduced. In addition, the connection of the high-voltage and current measuring line is correspondingly shortened, so that the external interference is reduced, the stability of data measurement is improved, the reliability is high, and the weight is light.

Specifically, the power module 1 is connected with a transformer 3, the transformer 3 is connected with a voltage-doubling rectifying module 4, and the voltage-doubling rectifying module 4 is connected with the control measuring module 2. By means of the integrated arrangement, the length range of the signal lines among the control measurement module 2, the power module 1, the transformer 3 and the voltage-doubling rectifying module 4 can be shortened to be less than 10 cm. In one embodiment, the control measurement module 2, the power module 1 and the transformer 3 are arranged as follows: the power module 1 is positioned between the transformer 3 and the control measurement module 2 and is fixedly connected with the box body base 5 through a connecting piece, and the transformer 3 is positioned under the voltage-multiplying rectification module 4. The connecting piece is an L-shaped connecting component, one end of the connecting piece is connected to the corresponding module, and the other end of the connecting piece is connected to the box body base 5.

In consideration of convenience of transportation and test, the voltage-doubling rectifying unit is transversely arranged on the box body base 6. In one embodiment, the voltage doubler rectifier module 4 is pivotally connected to the cabinet base 6. In one embodiment, the voltage doubler rectifier module 4 is pivotally connected to the chassis base 6 by a hinge latch 41, where the hinge latch 41 is used to latch the voltage doubler rectifier module 4 to the chassis base 6. The connection mode has the advantages of less wiring and convenient and quick test operation. Therefore, the voltage-multiplying rectifying unit is laid down during transportation, and is pivoted and erected when a test is needed. Accordingly, the voltage-doubling rectifying module 4 and the transformer 3 are connected by using an electric connection wire having a suitable length and a certain flexibility. Meanwhile, in order to ensure that the voltage-multiplying rectifying unit keeps certain stability when being placed, the box body base 6 is also provided with a boss 61 for supporting the voltage-multiplying rectifying unit 4.

In addition, the bottom of the box base 6 is also provided with a walking wheel 7, and the box base 6 is also connected with a pull rod 8. Thus, the integrated direct-current high-voltage testing device of the embodiment can be moved in a dragging mode during transportation. During testing, only the power line, the ground wire and the high-voltage outgoing line need to be connected, and the test is convenient and quick.

The electrical connection relationship among the control measurement module 2, the power module 1, the transformer 3, and the voltage doubler rectifier module 4 will be described below.

As shown in fig. 3, the power module 1 includes: the rectification unit receives input commercial power and outputs adjustable direct current voltage to the inversion unit, and the inversion unit outputs high-frequency alternating current square waves with adjustable amplitude. Therefore, the mains supply is input into the power module 1, the mains supply is rectified into adjustable direct-current voltage and then is inverted into high-frequency alternating-current square waves, and the high-frequency alternating-current square waves are alternating currents with adjustable amplitude values. Since rectification and inversion belong to the prior art, the prior rectification circuit and inversion circuit can be used in combination in the present embodiment.

The transformer 3 is an intermediate frequency transformer 3, and the signal lines correspond to intermediate frequency output and measurement lines. At this time, the high-frequency alternating-current square wave reaches the intermediate-frequency transformer 3 for primary boosting, and is subjected to voltage-multiplying rectification by the voltage-multiplying rectification module 4 to form high-voltage direct-current voltage.

The voltage doubler rectification module 4 includes: the circuit comprises a capacitor C1, a capacitor C2, a capacitor C3, a diode D1, a diode D2, a diode D3 and a plurality of voltage dividing resistors.

One end of the transformer 3 is connected with a high-voltage output end of the integrated direct-current high-voltage testing device through a capacitor C2, the high-voltage output end is connected with the other end of the transformer 3 through capacitors C3 and C2, diodes D1 to D3 are respectively connected in parallel between a branch where the capacitor C2 is located and a branch where the capacitor C1 and the capacitor C3 are located, and the high-voltage output end is further connected to the control and measurement module 2 through voltage dividing resistors which are sequentially connected in series.

The control measurement module 2 includes: singlechip and A/D conversion unit.

The singlechip is connected with the voltage-multiplying rectification module 4 through the A/D conversion unit. Therefore, the high-voltage direct current voltage passes through the voltage division resistor in the voltage doubling rectifying module 4, the signal is sent to the control measuring module 2, and the signal is sent to the single chip microcomputer through the A/D conversion unit.

In order to realize that remote operation controls is experimental for experimental safe and reliable, integration direct current high voltage test device still includes handheld control end 5, and it includes: communication unit, memory, processor and display. The processor is in signal transmission with the control measurement module 2 through the communication unit, the display displays received voltage data, the storage stores target voltage, and the processor can read the target voltage. The communication unit, the memory, the processor and the display can all adopt the existing devices.

When the handheld control end 5 works, the singlechip for controlling the measuring module 2 sends the high-voltage numerical value to the handheld control end 5 through the communication unit and displays the high-voltage numerical value through the display. According to the field test requirement, the required test voltage is not reached, the boost instruction is operated on the handheld control end 5, the processor sends the instruction to the single chip microcomputer for controlling the measurement module 2 through the communication unit, and the instruction received by the single chip microcomputer controls the power module 1 to continue boosting through D/A conversion. The singlechip can be ATMEGA128A, so as to realize the above functions.

And when the high-voltage direct current voltage rises to the target voltage required by the test, timing is started, the current test value is recorded and stored after the withstand voltage time according to the test specification of the test article is finished, finally, the handheld control end 5 is controlled to send a voltage reduction instruction, so that the high-voltage direct current voltage is reduced to 0, and the test is finished and stored. And finally, controlling a processor of the handheld control end 5 to send a voltage reduction instruction through the communication unit, so that the high-voltage direct current voltage is reduced to 0, and finishing the test. The test values include high voltage, high current, test time, etc.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an integration direct current high voltage test device which characterized in that, integration direct current high voltage test device includes: the device comprises a control measurement module, a power module, a transformer and a voltage-multiplying rectification module;

2. The integrated direct-current high-voltage test device according to claim 1, wherein the power module is located between the transformer and the control measurement module and is fixedly connected with a box base through a connecting piece, and the transformer is located right below the voltage-multiplying rectification module.

3. The integrated direct-current high-voltage test device according to claim 1, wherein the voltage-doubling rectifier module is pivotally connected with the box base through a hinge buckle.

4. The integrated direct-current high-voltage test device according to claim 1, wherein a traveling wheel is further arranged at the bottom of the box body base, and a pull rod is further connected to the box body base.

5. The integrated direct-current high-voltage testing device according to claim 1, wherein the transformer is an intermediate frequency transformer, and the signal lines correspond to intermediate frequency output and measurement lines.

6. The integrated direct-current high-voltage test device according to claim 1, wherein the voltage-doubling rectifying module comprises: the capacitor C1, the capacitor C2, the capacitor C3, the diode D1, the diode D2, the diode D3 and a plurality of voltage dividing resistors;

7. The integrated direct current high voltage testing device according to claim 1, wherein the control measurement module comprises: the single chip microcomputer and the A/D conversion unit;