CN102735895A - Capacitive voltage divider - Google Patents
Capacitive voltage divider Download PDFInfo
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- CN102735895A CN102735895A CN2012101824226A CN201210182422A CN102735895A CN 102735895 A CN102735895 A CN 102735895A CN 2012101824226 A CN2012101824226 A CN 2012101824226A CN 201210182422 A CN201210182422 A CN 201210182422A CN 102735895 A CN102735895 A CN 102735895A
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- shielding cylinder
- tubular electrode
- capacitive divider
- stopping surface
- support body
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Abstract
The invention relates to a capacitive voltage divider which is characterized in that a necking structure is arranged under a large-diameter section of a shielding cylinder and is provided with a stop surface which faces towards the upper end of the shielding cylinder, is used for supporting the lower end of a cylindrical electrode, and is an important component of a supporting structure; contact between the cylindrical electrode and the shielding cylinder can be isolated by an insulating support body arranged on the stop surface, so that the capacitive voltage divider can achieve the purpose of supporting the cylindrical electrode by adopting simple structure change, and further solve the problem that the existing capacitive voltage divider has a complicated structure.
Description
Technical field
The present invention relates to the high-voltage electrical apparatus technical field, relate in particular to a kind of capacitive divider.
Background technology
Difference according to sectional pressure element; Active type electronic type voltage transformer (being called for short EVT) is based on a kind of mutual inductor of electric resistance partial pressure, capacitance partial pressure and capacitance-resistance voltage divider principle; And voltage divider is as the sensing unit of active type electronic type voltage transformer; To the active type electronic type voltage transformer use and production has material impact; Wherein the coaxial type capacitive divider has obtained extensive application with the advantage of its simple structure and stable serviceability in the mutual inductor field; Disclosed coaxial type capacitive divider in the document of disclosed one piece of 250 kilovolts of two coaxial capacitance voltage divider by name of " atomic energy science technology " fifth phase in 1979 for example; This coaxial type capacitive divider by columned center conductor, tubular electrode and shielding cylinder around on from inside to outside sheathed successively the forming of central axis that extend below; But because wherein tubular electrode is fixed between radome and the center conductor through frameworks such as high-field electrode fixed mount, ball cap, hemispherical nuts; Make the structure more complicated of location tubular electrode in the coaxial type capacitive divider, thus improved the coaxial type capacitive divider production cost, prolonged production cycle of coaxial type capacitive divider, be unfavorable for the suitability for industrialized production of mutual inductor.
Summary of the invention
The present invention proposes a kind of capacitive divider, be intended to solve the baroque problem of capacitive divider in the prior art.
The technical scheme of capacitive divider of the present invention is following:
A kind of capacitive divider; Comprise around on the central axis that extends below sheathed center conductor, tubular electrode and the shielding cylinder of coaxial spaced successively from inside to outside; Be provided with the supporting construction that is used to limit spacing between the two between described shielding cylinder and the tubular electrode, the top of described shielding cylinder has the big footpath section on every side that is in outer peripheral face; Described supporting construction comprises the thin necking down structure of big footpath section of the ratio shielding cylinder that the below of the big footpath section of shielding cylinder is provided with; Described necking down structure has the stopping surface of annular spread of lower end that is used to hold up tubular electrode towards the upper end of shielding cylinder, and described stopping surface is provided with and is used to be installed in the lower surface of tubular electrode and the insulation support body between the stopping surface.
Described necking down structure comprises the thin thin neck section in ratio shielding cylinder upper end of the below, placement, lower end that is in tubular electrode that described shielding cylinder has; The ring-shaped step wall transition of the perisporium of the perisporium of described thin neck section and the upper end of shielding cylinder through being provided with between the two, described stopping surface is the top ring end face of described ring-shaped step wall.
Described insulation support body is the annular insulating mat circle that is used to set up on described stopping surface.
Described insulation support body is in the transition position of the upper end inwall of described stopping surface and described shielding cylinder.
Spacing between the internal face of described shielding cylinder and the outside wall surface of tubular electrode is less than the spacing between the outside wall surface of the internal face of tubular electrode and center conductor.
The below of the big footpath section of shielding cylinder of the present invention is provided with the necking down structure; And what the necking down structure had becomes the important component part of supporting construction towards the stopping surface of lower end that is used to hold up tubular electrode of the upper end of shielding cylinder; Through contacting between the isolated tubular electrode of the insulation support body that is provided with on the stopping surface and the shielding cylinder; Thereby the simple structural change that makes the present invention adopt just can reach the purpose that supports tubular electrode, and then has solved the baroque problem of capacitive divider in the prior art.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention.
Embodiment
The embodiment of capacitive divider of the present invention: as shown in Figure 1; This capacitive divider 1 comprise around on the central axis that extends below sheathed center conductor 2, tubular electrode 3 and the shielding cylinder 4 of coaxial spaced successively from inside to outside; Wherein, Spacing between the outside wall surface of the internal face of shielding cylinder 4 and tubular electrode 3 is less than the spacing between the outside wall surface of the internal face of tubular electrode 3 and center conductor 2; The lower end of tubular electrode 3 is in big footpath, the top section of shielding cylinder 4; Be provided with the supporting construction 5 that is used for fixing tubular electrode 3 positions between shielding cylinder 4 and the tubular electrode 3; This supporting construction 5 comprises the thin necking down structure 5-1 of big footpath section of the ratio shielding cylinder 4 that the section below, big footpath of shielding cylinder 4 is provided with; This necking down structure 5-1 comprises the thin thin neck section 5-2 in ratio shielding cylinder 4 upper ends of the below, placement, lower end that is in tubular electrode 3 that described shielding cylinder 4 has; The ring-shaped step wall 5-3 transition of the perisporium of the upper end of the perisporium of thin neck section 5-2 and shielding cylinder 4 through being provided with between the two, the top ring end face of ring-shaped step wall 5-3 is the stopping surface 5-4 of lower end that is used to hold up tubular electrode 3 towards the upper end of shielding cylinder 4, and is used to be installed in the lower surface of tubular electrode 3 and the insulation support body 5-5 between the stopping surface 5-4 being provided with on this stopping surface 5-4; Insulation support body 5-5 is the annular insulating mat circle that is used to set up on stopping surface 5-4, and insulation support body 5-5 is in the transition position of the upper end inwall of stopping surface 5-4 and shielding cylinder 4.
The present invention in use, the spacing between the outside wall surface of the internal face of shielding cylinder 4 and tubular electrode 3 is less than the spacing between the outside wall surface of the internal face of tubular electrode 3 and center conductor 2, so that low-voltage output voltage of signals signal is lower; The outside wall surface of the internal face of tubular electrode 3 and center conductor 2 constitutes the outside wall surface of high-voltage capacitance, tubular electrode 3 as two pole plates and the internal face of shielding cylinder 4 constitutes low-voltage capacitance as two pole plates; The upper end of shielding cylinder 4 has following three effects: the one, be used to shield center conductor 2; The 2nd, be used to carry insulation support body 5-5 and tubular electrode 3; The 3rd, constitute secondary capacitor with tubular electrode 3; The thin neck section 5-2 of shielding cylinder 4 and following does not limit, and can be processed as flange, external thread or other shapes according to the mounting means difference; Insulation support body 5-5 is in order to carry and fixing tubular electrode 3, prevents that tubular electrode 3 links to each other with shielding cylinder 4 to be short-circuited; Through after the dividing potential drop, have low voltage signal on the tubular electrode 3, can adopt any-mode that its signal is taken out, send collector to and handle.
In the above-described embodiments; The necking down structure is made up of the thin neck section and the ring-shaped step wall of shielding cylinder; In other embodiments; Boss that this necking down structure is convexly equipped with on also can the inwall by shielding cylinder or bulge-structure or back-up ring constitute, and these structures are the technology that art technology person knows, and therefore repeat no more.
In the above-described embodiments, insulation support body is the annular insulating mat circle, and in other embodiments, this annular insulating mat circle also can be replaced with members such as cross-over blocks, belongs to similar replacement between these structures and the annular insulating mat circle, therefore repeats no more.
In the above-described embodiments; Spacing between the internal face of shielding cylinder and the outside wall surface of tubular electrode is less than the spacing between the outside wall surface of the internal face of tubular electrode and center conductor; In other embodiments; Spacing between the internal face of shielding cylinder and the outside wall surface of tubular electrode also can be more than or equal to the spacing between the outside wall surface of the internal face of tubular electrode and center conductor, to strengthen the intensity of low voltage signal.
Claims (5)
1. capacitive divider; Comprise around on the central axis that extends below sheathed center conductor, tubular electrode and the shielding cylinder of coaxial spaced successively from inside to outside; Be provided with the supporting construction that is used to limit spacing between the two between described shielding cylinder and the tubular electrode, it is characterized in that: the top of described shielding cylinder has the big footpath section on every side that is in outer peripheral face; Described supporting construction comprises the thin necking down structure of big footpath section of the ratio shielding cylinder that the below of the big footpath section of shielding cylinder is provided with; Described necking down structure has the stopping surface of annular spread of lower end that is used to hold up tubular electrode towards the upper end of shielding cylinder, and described stopping surface is provided with and is used to be installed in the lower surface of tubular electrode and the insulation support body between the stopping surface.
2. capacitive divider according to claim 1; It is characterized in that: described necking down structure comprises the thin thin neck section in ratio shielding cylinder upper end of the below, placement, lower end that is in tubular electrode that described shielding cylinder has; The ring-shaped step wall transition of the perisporium of the perisporium of described thin neck section and the upper end of shielding cylinder through being provided with between the two, described stopping surface is the top ring end face of described ring-shaped step wall.
3. capacitive divider according to claim 1 and 2 is characterized in that: described insulation support body is the annular insulating mat circle that is used to set up on described stopping surface.
4. capacitive divider according to claim 3 is characterized in that: described insulation support body is in the transition position of the upper end inwall of described stopping surface and described shielding cylinder.
5. capacitive divider according to claim 1 is characterized in that: the spacing between the internal face of described shielding cylinder and the outside wall surface of tubular electrode is less than the spacing between the outside wall surface of the internal face of tubular electrode and center conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101824226A CN102735895B (en) | 2012-06-05 | 2012-06-05 | Capacitive voltage divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101824226A CN102735895B (en) | 2012-06-05 | 2012-06-05 | Capacitive voltage divider |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102735895A true CN102735895A (en) | 2012-10-17 |
| CN102735895B CN102735895B (en) | 2013-12-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101824226A Active CN102735895B (en) | 2012-06-05 | 2012-06-05 | Capacitive voltage divider |
Country Status (1)
| Country | Link |
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| CN (1) | CN102735895B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111175355A (en) * | 2018-11-13 | 2020-05-19 | 中国科学院大连化学物理研究所 | Capacitance tomography sensor and system for high-temperature fluidized bed measurement |
| RU2773388C2 (en) * | 2017-10-12 | 2022-06-03 | Альберто БАУЭР | Capacitive voltage sensor (options) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1431767A1 (en) * | 2002-12-20 | 2004-06-23 | Areva T&D SA | High-voltage encapsulated capacitor with high temperature stability |
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| CN1538181A (en) * | 2003-10-24 | 2004-10-20 | 西安西开高压电气股份有限公司 | Combined type electronic current-voltage sensor |
| CN1731195A (en) * | 2005-08-31 | 2006-02-08 | 东南大学 | High-voltage pulse resistance voltage divider |
| CN201229874Y (en) * | 2008-06-30 | 2009-04-29 | 鸿富锦精密工业（深圳）有限公司 | Assembled switch |
| CN201315236Y (en) * | 2008-10-27 | 2009-09-23 | 平高集团有限公司 | Voltage transformer with shield cover |
-
2012
- 2012-06-05 CN CN2012101824226A patent/CN102735895B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| EP1431767A1 (en) * | 2002-12-20 | 2004-06-23 | Areva T&D SA | High-voltage encapsulated capacitor with high temperature stability |
| CN1538181A (en) * | 2003-10-24 | 2004-10-20 | 西安西开高压电气股份有限公司 | Combined type electronic current-voltage sensor |
| CN1731195A (en) * | 2005-08-31 | 2006-02-08 | 东南大学 | High-voltage pulse resistance voltage divider |
| CN201229874Y (en) * | 2008-06-30 | 2009-04-29 | 鸿富锦精密工业（深圳）有限公司 | Assembled switch |
| CN201315236Y (en) * | 2008-10-27 | 2009-09-23 | 平高集团有限公司 | Voltage transformer with shield cover |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2773388C2 (en) * | 2017-10-12 | 2022-06-03 | Альберто БАУЭР | Capacitive voltage sensor (options) |
| CN111175355A (en) * | 2018-11-13 | 2020-05-19 | 中国科学院大连化学物理研究所 | Capacitance tomography sensor and system for high-temperature fluidized bed measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102735895B (en) | 2013-12-11 |
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Effective date of registration: 20151230 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee after: Pinggao Group Co., Ltd. Patentee after: Henan high General Electric Co., Ltd. Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Patentee before: Pinggao Group Co., Ltd. |
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Effective date of registration: 20191024 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Co-patentee after: Henan high General Electric Co., Ltd. Patentee after: Pinggao Electric Co., Ltd., Henan Co-patentee after: Pinggao Group Co., Ltd. Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Co-patentee before: Henan high General Electric Co., Ltd. Patentee before: Pinggao Group Co., Ltd. |