CN110441574A - Direct current voltage divider - Google Patents
Direct current voltage divider Download PDFInfo
- Publication number
- CN110441574A CN110441574A CN201910738291.7A CN201910738291A CN110441574A CN 110441574 A CN110441574 A CN 110441574A CN 201910738291 A CN201910738291 A CN 201910738291A CN 110441574 A CN110441574 A CN 110441574A
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- CN
- China
- Prior art keywords
- insulating sleeve
- epoxy tube
- plate
- capacitor resistor
- fixedly connected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulators (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention relates to a direct current voltage divider, which comprises an insulating sleeve, a resistance-capacitance voltage dividing component, a high-voltage end sealing plate, a base and a grading ring, the resistance-capacitance voltage-dividing component is arranged in the insulating sleeve, the base and the high-voltage end sealing plate are respectively arranged at the bottom and the top of the insulating sleeve, and is connected with two ends of a resistance-capacitance voltage-dividing component, the equalizing ring is connected with a high-pressure end sealing plate, the resistance-capacitance voltage-dividing component comprises an epoxy tube, a resistance-capacitance unit group, a backing plate and a positioning plate, the epoxy pipe is arranged in the insulating sleeve, a gap is arranged between the outer wall of the epoxy pipe and the inner wall of the insulating sleeve, the positioning plate is arranged at the opening at the top of the epoxy tube, the backing plate is connected with the epoxy tube and the resistance-capacitance unit group, and the backing plate is assembled and connected with the base, the resistance-capacitance unit group is arranged in the epoxy tube, two ends of the resistance-capacitance unit group are respectively connected with the positioning plate and the backing plate, and the resistance-capacitance unit group is formed by connecting a plurality of resistance-capacitance units. The invention improves the whole bending strength, reduces the wind swing amount at the top of the product and improves the running reliability of the product.
Description
Technical field
Present invention relates particularly to a kind of dividers.
Background technique
Divider is for electric system and electrical, electronic equipment manufacturing department's measurement industrial frequency AC high voltage and straight
Flow the instrument of high voltage.Its working principle is that the sampled value of the resistive-capacitive voltage divider component measurement voltage signal by divider, leads to
It crosses transmission cable or optical cable and sampled value is accessed into combining unit, be DC measurement control to sampled value processing in combining unit
The important component of protection system.
Divider in the prior art includes insulating sleeve and resistive-capacitive voltage divider component, and the resistive-capacitive voltage divider component includes
Multiple capacitor resistor unit series connection, and be directly arranged in insulating sleeve after the series connection of multiple capacitor resistor units, the divider of this structure
In use the shortcomings that is: insulating sleeve will affect resistance after casing bending because being easy to happen bending deformation by wind load effect
Hold unit, is bent after capacitor resistor unit series connection, interiors of products senser element entirety stress can be made, such as the wind at the top of fruit product
Pendulum amount is larger, if will affect internal biography in the wind pendulum biggish situation of offset at the top of product under extreme wind weather condition
The stability of inductor component, then the operational reliability of product is poor.
Summary of the invention
The object of the present invention is to provide one kind to not only increase integral bending, and reduces the wind at the top of product
Pendulum amount improves the divider of product operational reliability.
In order to achieve the above object, the technical scheme is that a kind of divider, including insulating sleeve, capacitance-resistance
Partial pressure component, high pressure end-plate, pedestal and grading ring, the resistive-capacitive voltage divider component are located in insulating sleeve, and the pedestal is located at
The bottom of insulating sleeve, and be fixedly connected with the low-pressure end of resistive-capacitive voltage divider component, high pressure end-plate is located at the top of insulating sleeve,
And be fixedly connected with the high-voltage end of resistive-capacitive voltage divider component, the grading ring is fixedly connected with high pressure end-plate, and innovative point is:
The resistive-capacitive voltage divider component includes epoxy tube, capacitor resistor unit group, backing plate and positioning plate, and the epoxy tube is located at insulating sleeve
It is interior, and gap is equipped between the outer wall of epoxy tube and the inner wall of insulating sleeve, the positioning plate is located at epoxy tube top open part,
The backing plate is fixedly connected with the bottom of the bottom of epoxy tube and capacitor resistor unit group simultaneously, and backing plate and pedestal assembly connection,
The capacitor resistor unit group is located in epoxy tube, and the both ends of capacitor resistor unit group are fixedly connected with positioning plate and backing plate respectively,
The capacitor resistor unit group is connected and composed by multiple capacitor resistor units, and one end after multiple capacitor resistor unit connections is high-voltage end, the other end
For low-pressure end, high-voltage end is fixedly connected with high pressure end-plate, and low-pressure end is fixedly connected with pedestal.
In the above-mentioned technical solutions, the resistive-capacitive voltage divider component further includes support plate and bracket, adjacent capacitor resistor unit it
Between be equipped with bracket, one end of the bracket is fixedly connected by support plate with one of capacitor resistor unit, the other end and another
Capacitor resistor unit is fixedly connected, and has gap between the periphery wall of the support plate and the inner wall of epoxy tube.
In the above-mentioned technical solutions, the resistive-capacitive voltage divider component further includes support rod and insulator cap, the epoxy tube it is outer
Two sides on peripheral wall are respectively equipped with multiple support rods, and the end of each support rod is equipped with insulator cap, the insulator cap and absolutely
There is gap between the inner wall of edge casing.
In the above-mentioned technical solutions, the resistive-capacitive voltage divider component further includes base flange, the base flange and backing plate and
Pedestal is fixedly connected, and the end part seal connection of the bottom and pedestal of base flange and insulating sleeve.
In the above-mentioned technical solutions, the gap control between the periphery wall of the support plate and the inner wall of epoxy tube 0 ~
Within the scope of 2mm.
In the above-mentioned technical solutions, the gap between the insulator cap and the inner wall of insulating sleeve is controlled in 0 ~ 2mm range
It is interior.
In the above-mentioned technical solutions, the end of the bottom and pedestal of the base flange and insulating sleeve passes through sealing
Circle is tightly connected.
In upper technical solution, the backing plate is equipped with epoxy tube locating slot, and the bottom of the epoxy tube is located at backing plate
In epoxy tube locating slot.
In the above-mentioned technical solutions, the both ends of the positioning plate pass through a support rod respectively and are fixedly connected with epoxy tube.
Good effect possessed by the present invention is: after using divider of the invention, due to capacitance-resistance of the present invention
Dividing component includes epoxy tube, capacitor resistor unit group, backing plate and positioning plate, and the epoxy tube is located in insulating sleeve, and epoxy tube
Outer wall and insulating sleeve inner wall between be equipped with gap, the positioning plate is located at epoxy tube top open part, and the backing plate is same
When be fixedly connected with the bottom of the bottom of epoxy tube and capacitor resistor unit group, and backing plate and pedestal assembly connection,
The capacitor resistor unit group is located in epoxy tube, and the both ends of capacitor resistor unit group are fixedly connected with positioning plate and backing plate respectively,
The capacitor resistor unit group is connected and composed by multiple capacitor resistor units, and one end after multiple capacitor resistor unit connections is high-voltage end, the other end
For low-pressure end, high-voltage end is fixedly connected with high pressure end-plate, and low-pressure end is fixedly connected with pedestal；
On the one hand, resistive-capacitive voltage divider component of the invention includes epoxy tube, and capacitor resistor unit group is located in epoxy tube, the capacitance-resistance list
Tuple is connected and composed by multiple capacitor resistor units, if bending after capacitor resistor unit connection, is supported, can be reinforced using epoxy tube
The bending strength of capacitor resistor unit, and can reinforce the bending strength of insulating sleeve, the present invention in the wall thickness for not changing insulating sleeve and
In the case where diameter, capacitor resistor unit is located in epoxy tube, so that double shielding of the capacitor resistor unit in insulating sleeve and epoxy tube
Under effect, even if being acted on after the connection of multiple capacitor resistor units by wind load, epoxy tube meeting therefore stress reduce capacitor resistor unit bending and become
Shape amount improves the bending strength of product entirety, reduces the wind pendulum amount at the top of product, and further makes product extreme big
Reliability of operation is high under wind weather condition；
On the other hand, the present invention can be adjusted flexibly the entire length of product, improve by adjusting the quantity of capacitor resistor unit
The versatility of capacitor resistor unit component is applicable to the divider of different voltages grade.Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of specific embodiment of the invention；
Fig. 2 is the structural schematic diagram of resistive-capacitive voltage divider component in Fig. 1；
Fig. 3 is the portion the A enlarged diagram in Fig. 2；
In figure, 1- insulating sleeve, 2- resistive-capacitive voltage divider component, 3- high pressure end-plate, 4- pedestal, 5- grading ring, 201- epoxy tube is (absolutely
Edge part), 202- capacitor resistor unit, 203- support rod (insulating part), 204- backing plate, 205- support plate (insulating part), 206- bracket,
207- positioning plate, 208- insulator cap, 209- base flange.
Specific embodiment
Below in conjunction with attached drawing and the embodiment provided, the present invention is further illustrated, and however, it is not limited to this.
As shown in Figure 1, 2, 3, a kind of divider, including insulating sleeve 1, resistive-capacitive voltage divider component 2, high pressure end-plate 3,
Pedestal 4 and grading ring 5, the resistive-capacitive voltage divider component 2 are located in insulating sleeve 1, and the pedestal 4 is located at the bottom of insulating sleeve 1,
And be fixedly connected with the low-pressure end of resistive-capacitive voltage divider component 2, high pressure end-plate 3 is located at the top of insulating sleeve 1, and and resistive-capacitive voltage divider
The high-voltage end of component 2 is fixedly connected, and the grading ring 5 is fixedly connected with high pressure end-plate 3,
The resistive-capacitive voltage divider component 2 includes epoxy tube 201, capacitor resistor unit group, backing plate 204 and positioning plate 207, the epoxy tube
201 are located in insulating sleeve 1, and gap, the positioning plate are equipped between the outer wall of epoxy tube 201 and the inner wall of insulating sleeve 1
207 are located at 201 top open part of epoxy tube, the backing plate 204 simultaneously with the bottom of epoxy tube 201 and the bottom of capacitor resistor unit group
It is fixedly connected, and backing plate 204 and 4 assembly connection of pedestal,
The capacitor resistor unit group is located in epoxy tube 201, and the both ends of capacitor resistor unit group respectively with positioning plate 207 and backing plate 204
It is fixedly connected, the capacitor resistor unit group is connected and composed by multiple capacitor resistor units 202, one end after multiple connections of capacitor resistor units 202
For high-voltage end, the other end is low-pressure end, and high-voltage end is fixedly connected with high pressure end-plate 3, and low-pressure end is fixedly connected with pedestal 4.
As shown in Figure 2,3, if capacitor resistor unit bends, epoxy tube is made equally to bend, support plate 205 and epoxy tube
Inner wall contact, can play a supporting role, and epoxy tube can reinforce capacitor resistor unit bending strength and to reinforce insulating sleeve bending resistance strong
Degree, the resistive-capacitive voltage divider component 2 further include support plate 205 and bracket 206, are equipped with bracket between adjacent capacitor resistor unit 202
206, one end of the bracket 206 is fixedly connected by support plate 205 with one of capacitor resistor unit 206, the other end with it is another
A capacitor resistor unit 206 is fixedly connected, and has gap between the periphery wall of the support plate 205 and the inner wall of epoxy tube 201.
As shown in Figure 2,3, if epoxy tube by wind load because being bent, the insulator cap 208 and insulating sleeve 1 of 203 end of support rod
Inner wall contact, make between epoxy tube and insulating sleeve Multi-contact and stress, at this point, can to reinforce capacitor resistor unit anti-for epoxy tube
Curved intensity, and can reinforce insulating sleeve bending strength, the resistive-capacitive voltage divider component 2 further include support rod 203 and insulator cap 208,
Two sides on the periphery wall of the epoxy tube 201 are respectively equipped with multiple support rods 203, and the end of each support rod 203 is all provided with
There is insulator cap 208, there is gap between the insulator cap 208 and the inner wall of insulating sleeve 1.
As shown in Figure 1, resistive-capacitive voltage divider component is quickly located by connecting with pedestal for convenience, the resistive-capacitive voltage divider component 2 is also
Including base flange 209, the base flange 209 is fixedly connected with backing plate 204 and pedestal 4, and base flange 209 and insulation sleeve
The bottom of pipe 1 and the end part seal connection of pedestal 4.
Gap control for the ease of assembly, between the periphery wall of support plate 205 of the present invention and the inner wall of epoxy tube 201
System is within the scope of 0 ~ 2mm.
Leakproofness after being connect in order to ensure base flange 209 with insulating sleeve 1 and pedestal 4, the base flange 209 with
The bottom of insulating sleeve 1 and the end of pedestal 4 are tightly connected by sealing ring.More than 1 epoxy tube 201 of insulating sleeve it
Between be filled with SF6 gas, to play the role of insulation or arc extinguishing.
As shown in Fig. 2, the quick positioning assembly in order to realize epoxy tube and backing plate, the backing plate 204 are equipped with epoxy tube
The bottom of locating slot, the epoxy tube 201 is located in the epoxy tube locating slot of backing plate 204.
As shown in Fig. 2, positioning plate 207 is connect with epoxy tube for convenience, the both ends of the positioning plate 207 pass through one respectively
A support rod 203 is fixedly connected with epoxy tube 201.
The present invention has the advantages that on the one hand, resistive-capacitive voltage divider component of the invention includes epoxy tube, and capacitor resistor unit group is set
In epoxy tube, the capacitor resistor unit group is connected and composed by multiple capacitor resistor units, can benefit if bending after capacitor resistor unit connection
It is supported with epoxy tube, the bending strength of capacitor resistor unit can be reinforced and reinforces the bending strength of insulating sleeve, the present invention is not
In the case where the wall thickness and diameter that change insulating sleeve, capacitor resistor unit is located in epoxy tube, so that capacitor resistor unit is in insulation sleeve
It manages under the double shielding effect with epoxy tube, even if being acted on after the connection of multiple capacitor resistor units by wind load, epoxy tube meeting therefore stress,
So that capacitor resistor unit is not susceptible to be bent, the bending strength of product entirety is improved, the wind pendulum amount at the top of product, Yi Jijin are reduced
One step keeps product reliability of operation under extreme wind weather condition high；
On the other hand, the entire length and raising of product by adjusting the quantity of capacitor resistor unit, can be adjusted flexibly in the present invention
The versatility of capacitor resistor unit component, is applicable to the divider of different voltages grade.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (9)
1. a kind of divider, including insulating sleeve (1), resistive-capacitive voltage divider component (2), high pressure end-plate (3), pedestal (4) and
Grading ring (5), the resistive-capacitive voltage divider component (2) are located in insulating sleeve (1), and the pedestal (4) is located at the bottom of insulating sleeve (1)
Portion, and be fixedly connected with the low-pressure end of resistive-capacitive voltage divider component (2), high pressure end-plate (3) is located at the top of insulating sleeve (1), and
It is fixedly connected with the high-voltage end of resistive-capacitive voltage divider component (2), the grading ring (5) is fixedly connected with high pressure end-plate (3), feature
It is:
The resistive-capacitive voltage divider component (2) includes epoxy tube (201), capacitor resistor unit group, backing plate (204) and positioning plate (207), described
Epoxy tube (201) is located in insulating sleeve (1), and between being equipped between the outer wall of epoxy tube (201) and the inner wall of insulating sleeve (1)
Gap, the positioning plate (207) are located at epoxy tube (201) top open part, the backing plate (204) simultaneously with epoxy tube (201)
Bottom is fixedly connected with the bottom of capacitor resistor unit group, and backing plate (204) and pedestal (4) assembly connection,
The capacitor resistor unit group is located in epoxy tube (201), and the both ends of capacitor resistor unit group respectively with positioning plate (207) and backing plate
(204) it is fixedly connected, the capacitor resistor unit group is connected and composed by multiple capacitor resistor units (202), multiple capacitor resistor unit (202) connections
One end afterwards is high-voltage end, and the other end is low-pressure end, and high-voltage end is fixedly connected with high pressure end-plate (3), low-pressure end and pedestal (4)
It is fixedly connected.
2. divider according to claim 1, it is characterised in that: the resistive-capacitive voltage divider component (2) further includes support
Plate (205) and bracket (206) are equipped with bracket (206) between adjacent capacitor resistor unit (202), and one end of the bracket (206) is logical
It crosses support plate (205) to be fixedly connected with one of capacitor resistor unit (206), the other end and another capacitor resistor unit (206) are fixed
Connection has gap between the periphery wall of the support plate (205) and the inner wall of epoxy tube (201).
3. divider according to claim 1, it is characterised in that: the resistive-capacitive voltage divider component (2) further includes support
Bar (203) and insulator cap (208), the two sides on the periphery wall of the epoxy tube (201) are respectively equipped with multiple support rods (203),
And the end of each support rod (203) is equipped with insulator cap (208), the inner wall of the insulator cap (208) and insulating sleeve (1) it
Between have gap.
4. divider according to claim 1, it is characterised in that: the resistive-capacitive voltage divider component (2) further includes pedestal
Flange (209), the base flange (209) are fixedly connected with backing plate (204) and pedestal (4), and base flange (209) and insulation
The bottom of casing (1) and the end part seal connection of pedestal (4).
5. divider according to claim 2, it is characterised in that: the periphery wall and epoxy of the support plate (205)
The gap managed between the inner wall of (201) controls within the scope of 0 ~ 2mm.
6. divider according to claim 3, it is characterised in that: the insulator cap (208) and insulating sleeve (1)
Gap between inner wall controls within the scope of 0 ~ 2mm.
7. divider according to claim 4, it is characterised in that: the base flange (209) and insulating sleeve (1)
Bottom and pedestal (4) end pass through sealing ring be tightly connected.
8. divider according to claim 1, it is characterised in that: the backing plate (204) positions equipped with epoxy tube
The bottom of slot, the epoxy tube (201) is located in the epoxy tube locating slot of backing plate (204).
9. divider according to claim 3, it is characterised in that: the both ends of the positioning plate (207) pass through respectively
One support rod (203) is fixedly connected with epoxy tube (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738291.7A CN110441574B (en) | 2019-08-12 | 2019-08-12 | Direct current voltage divider |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910738291.7A CN110441574B (en) | 2019-08-12 | 2019-08-12 | Direct current voltage divider |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110441574A true CN110441574A (en) | 2019-11-12 |
| CN110441574B CN110441574B (en) | 2022-05-13 |
Family
ID=68434552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910738291.7A Active CN110441574B (en) | 2019-08-12 | 2019-08-12 | Direct current voltage divider |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110441574B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT1590821E (en) * | 2003-02-06 | 2008-10-08 | Cooper Technologies Co | High voltage operating rod sensor and method of making the same |
| CN205067567U (en) * | 2015-09-11 | 2016-03-02 | 广东电网有限责任公司电力科学研究院 | Dc voltage divider is handed over to self calibration high accuracy |
| CN106468729A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with radiator structure |
| CN106468728A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with temperature monitoring |
| CN106849640A (en) * | 2015-12-07 | 2017-06-13 | 中国电力科学研究院 | A kind of divider with heat abstractor |
| CN207516432U (en) * | 2017-12-06 | 2018-06-19 | 三峡大学 | A kind of capacitance partial pressure type optical voltage sensor of self checking |
| CN108627683A (en) * | 2017-03-23 | 2018-10-09 | 国家电网公司 | One kind ± 1100kV dividers |
-
2019
- 2019-08-12 CN CN201910738291.7A patent/CN110441574B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT1590821E (en) * | 2003-02-06 | 2008-10-08 | Cooper Technologies Co | High voltage operating rod sensor and method of making the same |
| CN106468729A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with radiator structure |
| CN106468728A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with temperature monitoring |
| CN205067567U (en) * | 2015-09-11 | 2016-03-02 | 广东电网有限责任公司电力科学研究院 | Dc voltage divider is handed over to self calibration high accuracy |
| CN106849640A (en) * | 2015-12-07 | 2017-06-13 | 中国电力科学研究院 | A kind of divider with heat abstractor |
| CN108627683A (en) * | 2017-03-23 | 2018-10-09 | 国家电网公司 | One kind ± 1100kV dividers |
| CN207516432U (en) * | 2017-12-06 | 2018-06-19 | 三峡大学 | A kind of capacitance partial pressure type optical voltage sensor of self checking |
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| Publication number | Publication date |
|---|---|
| CN110441574B (en) | 2022-05-13 |
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Application publication date: 20191112 Assignee: Changzhou Wujin Luoyang Huatai Electrical Equipment Co.,Ltd. Assignor: NR ELECTRIC POWER ELECTRONICS Co.,Ltd.|NR ENGINEERING Co.,Ltd.|NR ELECTRIC Co.,Ltd. Contract record no.: X2023980034194 Denomination of invention: A DC voltage divider Granted publication date: 20220513 License type: Common License Record date: 20230329 Application publication date: 20191112 Assignee: Changzhou Wenhe Yuebo Electrical Equipment Co.,Ltd. Assignor: NR ELECTRIC POWER ELECTRONICS Co.,Ltd.|NR ELECTRIC Co.,Ltd.|NR ENGINEERING Co.,Ltd. Contract record no.: X2023980034193 Denomination of invention: A DC voltage divider Granted publication date: 20220513 License type: Common License Record date: 20230329 |