阅读说明：本技术 一种直流标准源电压输出量精细化调节装置 (Fine adjustment device for voltage output quantity of direct current standard source ) 是由 刘罡 刘刚 刘畅 李风泽 姜春阳 王轩 吴珊 房琛 李永臣 白亮 郝新 薛丽敏 于 2020-04-20 设计创作，主要内容包括：本发明涉及电能计量电测仪表技术领域,尤其涉一种直流标准源电压输出量精细化调节装置。本发明是在电阻分压器的外部设有外壳,所述电阻分压器包括高压臂电阻和低压臂电阻,所述高压臂电阻和低压臂电阻通过线路连接；所述电阻分压器的一端与直流标准源的输出端相连接,另一端与直流标准电压表输入端相连接。本发明有效解决了直流标准源无法输出较小电压信号的问题,提高了直流标准源的输出电压分辨力。本发明具有结构简单,设计合理,成本低廉,节省资金的特点。适宜在相关电力系统推广和应用,其应用前景可观。(The invention relates to the technical field of electric energy measuring instruments, in particular to a refined adjusting device for voltage output quantity of a direct-current standard source. The invention is provided with a shell outside a resistor divider, wherein the resistor divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line; one end of the resistance voltage divider is connected with the output end of the direct current standard source, and the other end of the resistance voltage divider is connected with the input end of the direct current standard voltmeter. The invention effectively solves the problem that the DC standard source can not output smaller voltage signals, and improves the output voltage resolution of the DC standard source. The invention has the characteristics of simple structure, reasonable design, low cost and capital saving. The method is suitable for popularization and application in related power systems, and has considerable application prospect.)

1. A kind of direct current standard source voltage output quantity fine regulation device, its characteristic is: the outer part of the resistor divider is provided with a shell, the resistor divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line; one end of the resistance voltage divider is connected with the output end of the direct current standard source, and the other end of the resistance voltage divider is connected with the input end of the direct current standard voltmeter.

2. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the output end of the direct current standard source is connected with the input end of the resistance voltage divider in a four-port connection mode, and a circuit is a copper conducting wire.

3. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the + stage of the high-voltage arm resistor is simultaneously connected with the output 1+ of the direct-current standard source and the output 2+ of the direct-current standard source; the negative electrode of the high-voltage arm resistor is connected with the positive electrode of the low-voltage arm resistor in a gold-plated copper mode, and the high-voltage arm resistor is connected with the input positive electrode of the direct-current standard voltmeter through a copper lead.

4. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: and the stage-one of the low-voltage arm resistor is connected with the output 1-of the direct current standard source and the output 2-of the direct current standard source, and the low-voltage arm resistor is connected with the input stage-one of the direct current standard voltmeter through a copper wire.

5. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistor voltage divider is formed by gluing tetrafluoroethylene insulation plates, and the high end of a high-voltage arm resistor, the low end of a low-voltage arm resistor and the high-low voltage connecting end of the resistor voltage divider are fixed by the tetrafluoroethylene insulation plates through gluing.

6. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistance value of the high-voltage arm is 9 ohms, and the resistance value of the low-voltage arm is 1 ohm; the accuracy of the high-voltage arm resistor and the low-voltage arm resistor is 0.003 level, and the accuracy level of the resistor divider is 0.01 level.

7. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the ratio of the resistance values of the high-voltage arm resistor and the low-voltage arm resistor is 9:1, and the device outputs a DC voltage value of 1/10 which is the minimum value of the DC standard source.

8. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistance voltage divider shell adopts 6063 type aluminum alloy, and the shell thickness is 1 mm.

9. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the resistance voltage divider and the shell adopt an air isolation mode.

10. The apparatus of claim 1, wherein the apparatus for fine tuning of the output of the dc standard source voltage comprises: the input line and the output line at two ends of the resistor divider extend out of the shell through the small holes; glue is filled between the input line and the output line at two ends of the resistance voltage divider and the small hole on the shell.

Technical Field

The invention relates to the technical field of electric energy measuring instruments, in particular to a refined adjusting device for voltage output quantity of a direct-current standard source.

Background

According to the requirements of the power industry standard D L/T1112-2009 verification regulations for AC and DC instrument inspection devices, a direct comparison method which takes a DC standard source as a device to be inspected and a DC standard voltmeter as a standard is generally adopted for measuring the voltage error of the DC standard source.

Disclosure of Invention

In view of the problems in the prior art, the invention provides a fine adjustment device for the voltage output of a dc standard source, which aims to achieve the precise output function of a small voltage signal of the dc standard source through the voltage division of a dc standard resistor.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a shell is arranged outside a resistance voltage divider, the resistance voltage divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line; one end of the resistance voltage divider is connected with the output end of the direct current standard source, and the other end of the resistance voltage divider is connected with the input end of the direct current standard voltmeter.

The output end of the direct current standard source is connected with the input end of the resistance voltage divider in a four-port connection mode, and a circuit is a copper conducting wire.

The + stage of the high-voltage arm resistor is simultaneously connected with the output 1+ of the direct-current standard source and the output 2+ of the direct-current standard source; the negative electrode of the high-voltage arm resistor is connected with the positive electrode of the low-voltage arm resistor in a gold-plated copper mode, and the high-voltage arm resistor is connected with the input positive electrode of the direct-current standard voltmeter through a copper lead.

And the stage-one of the low-voltage arm resistor is connected with the output 1-of the direct current standard source and the output 2-of the direct current standard source, and the low-voltage arm resistor is connected with the input stage-one of the direct current standard voltmeter through a copper wire.

The resistor voltage divider is formed by gluing tetrafluoroethylene insulation plates, and the high end of a high-voltage arm resistor, the low end of a low-voltage arm resistor and the high-low voltage connecting end of the resistor voltage divider are fixed by the tetrafluoroethylene insulation plates through gluing.

The resistance value of the high-voltage arm is 9 ohms, and the resistance value of the low-voltage arm is 1 ohm; the accuracy of the high-voltage arm resistor and the low-voltage arm resistor is 0.003 level, and the accuracy level of the resistor divider is 0.01 level.

The ratio of the resistance values of the high-voltage arm resistor and the low-voltage arm resistor is 9:1, and the device outputs a DC voltage value of 1/10 which is the minimum value of the DC standard source.

The resistance voltage divider shell adopts 6063 type aluminum alloy, and the shell thickness is 1 mm.

The resistance voltage divider and the shell adopt an air isolation mode.

The input line and the output line at two ends of the resistor divider extend out of the shell through the small holes; glue is filled between the input line and the output line at two ends of the resistance voltage divider and the small hole on the shell.

The invention has the advantages and beneficial effects that:

the invention effectively solves the problem that the DC standard source can not output smaller voltage signals, and improves the output voltage resolution of the DC standard source. The invention has the characteristics of simple structure, reasonable design, low cost and capital saving. The method is suitable for popularization and application in related power systems, and has considerable application prospect.

Drawings

The invention will be described in further detail with reference to the drawings and specific embodiments for facilitating understanding and practicing of the invention by those of ordinary skill in the art, but it should be understood that the scope of the invention is not limited by the specific embodiments.

FIG. 1 is a system wiring diagram of the present invention;

fig. 2 is a schematic diagram of the structure of the resistor divider of the present invention.

Detailed Description

The disclosure will be further explained with reference to the drawings. It is specifically intended that the following description be regarded as illustrative in nature and not as restrictive in any way, since it is intended to limit the disclosure to the precise form disclosed and illustrated. Unless specifically stated otherwise, the relative arrangement of components and steps and numerical expressions and values set forth in the embodiments do not limit the scope of the present disclosure. Additionally, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail but are intended to be part of the specification where appropriate.

The invention relates to a refined adjusting device for the voltage output quantity of a direct current standard source, which mainly comprises a resistance voltage divider and a shell, wherein the shell is arranged outside the resistance voltage divider, the resistance voltage divider and the shell adopt an air isolation mode, and air is used as a medium to realize the electrical insulation among all components of a circuit. The resistance voltage divider comprises a high-voltage arm resistor and a low-voltage arm resistor, and the high-voltage arm resistor and the low-voltage arm resistor are connected through a line. The high end of the high-voltage arm resistor of the resistor voltage divider and the low end of the low-voltage arm resistor are tightly connected by the shell and fixed by glue. The shell is provided with a small hole, and the input line and the output line at two ends of the resistor divider extend out of the shell through the small hole. Glue is filled between the input line and the output line at two ends of the resistance voltage divider and the small holes in the shell, so that the input line and the output line are bonded, and the shell can be fixed.