CN114578113A - Pulse high-voltage division system with adjustable proportionality coefficient - Google Patents
Pulse high-voltage division system with adjustable proportionality coefficient Download PDFInfo
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- CN114578113A CN114578113A CN202011375375.8A CN202011375375A CN114578113A CN 114578113 A CN114578113 A CN 114578113A CN 202011375375 A CN202011375375 A CN 202011375375A CN 114578113 A CN114578113 A CN 114578113A
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- voltage
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- voltage divider
- electric capacity
- sensing
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- 239000003990 capacitor Substances 0.000 claims abstract description 84
- 239000002184 metal Substances 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 230000006698 induction Effects 0.000 claims abstract description 30
- 230000008054 signal transmission Effects 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011889 copper foil Substances 0.000 claims description 4
- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/04—Voltage dividers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G5/16—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of distance between electrodes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a pulse high-voltage division system with adjustable proportionality coefficient, which comprises a capacitance voltage division module comprising a low-voltage arm capacitor and a high-voltage arm capacitor, wherein the low-voltage arm capacitor is fixed at the bottom of a peaking capacitor shell, the high-voltage arm capacitor comprises an insulating inner cylinder, an outer cylinder sleeved on the insulating inner cylinder, an induction electrode and a first induction metal sheet arranged on one side of the low-voltage arm capacitor, which is far away from the peaking capacitor shell, one end of the induction electrode is fixed in the inner cylinder and is connected with a signal acquisition port, the other end of the induction electrode penetrates through the inner cylinder and the low-voltage arm capacitor and is connected with the first induction metal sheet, the induction electrode is electrically connected with the low-voltage arm capacitor, the outer cylinder is exposed out of the top of the peaking capacitor shell, and the outer cylinder can move up and down relative to the peaking capacitor shell along the extension direction of the induction electrode to adjust the distance between the first induction metal sheet and the high-voltage output end of the peaking capacitor, and then the capacitance value of the high-voltage arm capacitor is changed, and the voltage division proportionality coefficient of the low-voltage arm capacitor and the high-voltage arm capacitor is changed.
Description
Technical Field
The invention relates to the technical field of high-voltage pulse modulators, in particular to a voltage division system.
Background
In the field of laser power supplies, a peaking capacitor is used as a last-stage output device of the laser power supply and works under the nanosecond pulse working condition of dozens of kilovolts, and the establishment of a real-time measuring system of the working voltage of the peaking capacitor is an important basis for evaluating the normal work of the laser power supply.
The conventional voltage waveform measuring means mainly depends on direct contact measurement such as resistance voltage division, resistance-capacitance voltage division and the like. In the contact type high-voltage measuring device, the devices are often packaged in a large size due to the insulation and voltage resistance, so that the voltage division measuring device is large in size, difficult to install and complex in design. The conventional inductive voltage divider is generally based on the principle of capacitive voltage division, for example, a pasted film capacitor, and the fixed sensing distance of the film capacitor results in fixed and non-adjustable voltage division ratio due to the fixed film thickness, which limits the types of signal acquisition devices.
Therefore, there is a need to design a pulse high voltage dividing system based on capacitive sensing voltage division, which has a small size and a compact structure and can adjust the voltage dividing proportionality coefficient.
Disclosure of Invention
The invention aims to provide a pulse high-voltage division system with an adjustable proportional coefficient, which can adjust the proportional coefficient of voltage division, so that the voltage division ratio can be flexibly adjusted to meet the requirements of pulse high-voltage measurement in different occasions.
In order to achieve the purpose, the invention provides the following scheme:
proportion coefficient adjustable pulse high voltage divider system, including electric capacity voltage divider module, electric capacity voltage divider module includes low pressure arm electric capacity and high-pressure arm electric capacity, low pressure arm electric capacity is fixed in peaking capacitor chassis bottom, high-pressure arm electric capacity is established including insulating inner tube, cover the urceolus on the insulating inner tube, response electrode and locating low pressure arm electric capacity deviates from the first response sheetmetal of one side of peaking capacitor chassis, response electrode one end is fixed in the inner tube, and be connected with the signal acquisition port, the response electrode other end passes the inner tube behind the low pressure arm electric capacity with first response sheetmetal is connected, just the response electrode with low pressure arm electric capacity electric connection, the urceolus exposes outward the top of peaking capacitor chassis, just the urceolus can be relative peaking capacitor chassis follows the extending direction of response electrode reciprocates in order to adjust first response sheetmetal with peaking capacitor electrical connection Distance between the high voltage outputs.
As a refinement, the outer barrel is provided with an external thread for screw-fitting with the peaking capacitor case.
As a refinement, the sensing electrode is welded to the first sensing metal sheet.
As an improved mode, the high-voltage arm capacitor further comprises a signal transmission coaxial line, and the induction electrode is connected with the signal acquisition port through the signal transmission coaxial line.
As an improved mode, the low-voltage arm capacitor includes a first insulating film, a second insulating film, and a second sensing metal sheet sandwiched between the first insulating film and the second insulating film, the first insulating film is used to be fixed at the bottom of a peaking capacitor case, and the sensing electrode is electrically connected to the second sensing metal sheet.
As an improvement, the high-voltage arm capacitor further comprises a metal spring piece sleeved on the sensing electrode, and the sensing electrode is electrically connected with the second sensing metal piece through the metal spring piece.
As an improvement, the first induction metal sheet and/or the second induction metal sheet is a copper foil.
As an improvement, the voltage dividing system further comprises a secondary voltage dividing module connected with the sensing electrode.
As an improved mode, the secondary voltage dividing module includes a resistor R1 and a resistor R2, one end of the resistor R1 is connected to the sensing electrode, the other end of the resistor R2 is connected to the signal acquisition port, the other end of the resistor R2 is connected to the sensing electrode and grounded, and the signal acquisition port is connected to the resistor R2 in parallel.
The voltage division system provided by the invention can adjust the distance between the first induction metal sheet and the high-voltage output end of the peaking capacitor by adjusting the position of the outer cylinder relative to the peaking capacitor shell, so that the capacitance value of the high-voltage arm capacitor is changed, the voltage division ratio coefficient of the low-voltage arm capacitor and the high-voltage arm capacitor is changed, and the amplitude of an output waveform is adjusted. By the design, the voltage division system can be flexibly adjusted to meet the requirements of pulse high-voltage measurement on different occasions, so that the voltage division system is not limited by the type of signal acquisition equipment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a capacitance voltage dividing module of a voltage dividing system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a low-voltage arm capacitor according to an embodiment of the present invention;
FIG. 3 is a schematic circuit diagram of a voltage divider system according to an embodiment of the present invention in a use state;
fig. 4 is a schematic diagram of a conventional capacitive voltage divider system.
The reference numbers illustrate:
(1) the capacitance voltage division module; (2) peaking the capacitor case; (3) peaking capacitors; (4) a resistor R1; (5) a resistor R2; (6) a signal acquisition port; (7) a low-voltage arm capacitor C2; (8) a high-voltage arm capacitor C1; (9) an induction electrode; (11) the first induction metal sheet; (10) a metal spring sheet; (12) a signal transmission coaxial line; (13) an insulating inner cylinder; (14) an outer cylinder; (16) a second insulating film; (17) a second induction metal sheet; (18) and a first insulating film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-3, the pulse high-voltage dividing system with adjustable proportionality coefficient provided in the embodiments of the present invention includes a capacitor voltage dividing module (1), where the capacitor voltage dividing module (1) includes a low-voltage arm capacitor C2(7) and a high-voltage arm capacitor C1(8), the low-voltage arm capacitor C2(7) is fixed at the bottom of a peaking capacitor casing (2), the high-voltage arm capacitor C1(8) includes an insulating inner cylinder (13), an outer cylinder (14) sleeved on the insulating inner cylinder (13), an induction electrode (9), and a first induction metal sheet (11) disposed on a side of the low-voltage arm capacitor C2(7) away from the peaking capacitor casing (2), one end of the induction electrode (9) is fixed in the inner cylinder and used for connecting with a signal acquisition port (6), and the other end of the induction electrode (9) passes through the inner cylinder and the low-voltage arm capacitor C2(7) and then connects with the first induction metal sheet (11), and the induction electrode (9) is electrically connected with the low-voltage arm capacitor C2(7), the outer cylinder (14) is exposed out of the top of the peaking capacitor shell (2), and the outer cylinder (14) can move up and down along the extension direction of the induction electrode (9) relative to the peaking capacitor shell (2) so as to adjust the distance between the first induction metal sheet (11) and the high-voltage output end of the peaking capacitor (3).
The voltage dividing system of the embodiment can adjust the distance between the first sensing metal sheet (11) and the high-voltage output end of the peaking capacitor (3) by adjusting the position of the outer cylinder (14) relative to the peaking capacitor shell (2), so as to change the capacitance value of the high-voltage arm capacitor C1(8), further change the voltage dividing proportional coefficient of the low-voltage arm capacitor C2(7) and the high-voltage arm capacitor C1(8), and adjust the amplitude of an output waveform. By the design, the voltage division system can be flexibly adjusted to meet the requirements of pulse high-voltage measurement on different occasions, so that the voltage division system is not limited by the type of signal acquisition equipment. Moreover, the partial pressure system of this embodiment overall structure is small, compact structure, and simple to operate is favorable to using widely on a large scale.
As a better embodiment, the outer cylinder (14) is provided with an external thread which is used for being in threaded fit with the peaking capacitor shell (2), the connection mode of the outer cylinder (14) and the peaking capacitor shell (2) is simple and reliable, the positions of the outer cylinder (14) and the capacitor shell are convenient to adjust, and the position of the high-voltage arm capacitor C1(8) relative to the peaking capacitor shell (2) can be adjusted through tightness of the threads.
Optionally, the sensing electrode (9) is welded with the first sensing metal sheet (11), the sensing electrode (9) is fixed with the first metal sheet through welding, the fixing mode is firm, and the first sensing metal sheet (11) cannot easily fall off.
Specifically, the first induction metal sheet (11) is a copper foil.
Furthermore, the high-voltage arm capacitor C1(8) further comprises a signal transmission coaxial line (12) connected with the sensing electrode (9), and the signal transmission coaxial line (12) is used for outputting signals.
Referring to fig. 1-3, the low-voltage arm capacitor C2(7) includes a first insulating film (18), a second insulating film (16), and a second sensing metal sheet (17) sandwiched between the first insulating film (18) and the second insulating film (16), the first insulating film (18) is used to be fixed at the bottom of the peaking capacitor case (2), the high-voltage arm capacitor C1(8) further includes a metal spring (10) sleeved on the sensing electrode (9), the sensing electrode (9) is electrically connected to the second sensing metal sheet (17) through the metal spring (10), and a capacitance value of the low-voltage arm capacitor C2(7) is determined by a distance from the second sensing metal sheet (17) to the peaking capacitor case (2), that is, a thickness of the first insulating film (18).
Specifically, the second induction metal sheet (17) is a copper foil.
Referring to fig. 3, the voltage dividing system further includes a secondary voltage dividing module connected to an output end of the signal transmission coaxial line (12), the secondary voltage dividing module includes a resistor R1(4) and a resistor R2(5), one end of the resistor R1(4) is connected to the sensing electrode (9), the other end is connected to the resistor R2(5) and the signal acquisition port (6), the other end of the resistor R2(5) is connected to the sensing electrode (9) and grounded, the signal acquisition port (6) is connected to the resistor R2(5) in parallel, the high-voltage arm capacitor C1(8) and the low-voltage arm capacitor C2(7) divide the voltage and then lead out the signal through the sensing electrode (9) connected to the first sensing metal plate (11) and the signal transmission coaxial line (12), and then divide the voltage through the secondary voltage dividing module, further reduce the amplitude of the measured waveform, obtain a low voltage waveform consistent with the pulse high voltage waveform on the peaking capacitor (3), and the voltage waveform on the peaking capacitor (3) is measured and collected by directly connecting a collection port with measurement equipment such as an oscilloscope and the like, so that the flexible and accurate measurement of the voltage of the peaking capacitor (3) in the field of laser power supplies is realized.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a proportionality coefficient adjustable pulse high pressure voltage divider system, a serial communication port, including electric capacity voltage divider module, electric capacity voltage divider module includes low pressure arm electric capacity and high pressure arm electric capacity, low pressure arm electric capacity is fixed in peaking capacitor chassis bottom, high pressure arm electric capacity is established including insulating inner tube, cover urceolus, induction electrode on the insulating inner tube and locating low pressure arm electric capacity deviates from the first response sheetmetal of one side of peaking capacitor chassis, induction electrode one end is fixed in the inner tube, and be connected with the signal acquisition port, the induction electrode other end passes the inner tube the low pressure arm electric capacity back with first response sheetmetal is connected, just induction electrode with low pressure arm electric capacity electric connection, the urceolus exposes the top of peaking capacitor chassis, just the urceolus can be relative peaking capacitor chassis is followed induction electrode's extending direction reciprocates in order to adjust first response sheetmetal The distance between the metal sheet and the high-voltage output end of the peaking capacitor.
2. The voltage divider system of claim 1, wherein the outer barrel is provided with external threads for threaded engagement with the peaking capacitor case.
3. The voltage divider system of claim 1, wherein the sensing electrode is welded to the first sensing metal sheet.
4. The voltage divider system of claim 1, wherein the high-voltage arm capacitor further comprises a signal transmission coaxial line, and the sensing electrode is connected to the signal acquisition port via the signal transmission coaxial line.
5. The voltage divider system of claim 1, wherein the low-voltage arm capacitor comprises a first insulating film, a second insulating film, and a second sensing metal plate sandwiched between the first insulating film and the second insulating film, the first insulating film is configured to be fixed to a bottom of a peaking capacitor enclosure, and the sensing electrode is electrically connected to the second sensing metal plate.
6. The voltage divider system of claim 5, wherein the high-voltage arm capacitor further comprises a metal spring plate sleeved on the sensing electrode, and the sensing electrode is electrically connected to the second sensing metal plate through the metal spring plate.
7. The voltage divider system of claim 5, wherein the first inductive metal sheet and/or the second inductive metal sheet is a copper foil.
8. The voltage divider system of claim 1, further comprising a secondary voltage divider module coupled to the sensing electrode.
9. The voltage dividing system of claim 8, wherein the secondary voltage dividing module comprises a resistor R1 and a resistor R2, one end of the resistor R1 is connected to the sensing electrode, the other end of the resistor R2 and the signal acquisition port are connected, the other end of the resistor R2 is connected to the sensing electrode and grounded, and the signal acquisition port is connected in parallel to the resistor R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011375375.8A CN114578113A (en) | 2020-11-30 | 2020-11-30 | Pulse high-voltage division system with adjustable proportionality coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011375375.8A CN114578113A (en) | 2020-11-30 | 2020-11-30 | Pulse high-voltage division system with adjustable proportionality coefficient |
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| Publication Number | Publication Date |
|---|---|
| CN114578113A true CN114578113A (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011375375.8A Pending CN114578113A (en) | 2020-11-30 | 2020-11-30 | Pulse high-voltage division system with adjustable proportionality coefficient |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494281A (en) * | 2022-09-19 | 2022-12-20 | 芜湖麦可威电磁科技有限公司 | Wireless induction type capacitive voltage divider |
-
2020
- 2020-11-30 CN CN202011375375.8A patent/CN114578113A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494281A (en) * | 2022-09-19 | 2022-12-20 | 芜湖麦可威电磁科技有限公司 | Wireless induction type capacitive voltage divider |
| CN115494281B (en) * | 2022-09-19 | 2024-05-14 | 芜湖麦可威电磁科技有限公司 | Wireless induction type capacitive voltage divider |
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