CN203366868U - Supporting insulator and voltage sensor - Google Patents

Supporting insulator and voltage sensor Download PDF

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Publication number
CN203366868U
CN203366868U CN 201320411756 CN201320411756U CN203366868U CN 203366868 U CN203366868 U CN 203366868U CN 201320411756 CN201320411756 CN 201320411756 CN 201320411756 U CN201320411756 U CN 201320411756U CN 203366868 U CN203366868 U CN 203366868U
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CN
China
Prior art keywords
voltage
low
pressure
nut
hold
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CN 201320411756
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Chinese (zh)
Inventor
姚飞
钱远驰
徐立子
艾晓中
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BEIJING HUATIAN ELECTROMECHANICAL INSTITUTE Co Ltd
ZHUHAI LICHAO ELECTRIC POWER TECHNOLOGY Co Ltd
Original Assignee
BEIJING HUATIAN ELECTROMECHANICAL INSTITUTE Co Ltd
ZHUHAI LICHAO ELECTRIC POWER TECHNOLOGY Co Ltd
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Priority to CN 201320411756 priority Critical patent/CN203366868U/en
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Abstract

The utility model relates to a supporting insulator and a voltage sensor. The supporting insulator comprises an insulating supporting frame, four high voltage capacitors, a low voltage output terminal, a low voltage end face fixation nut and a high voltage end face fixation nut. Four high voltage capacitors are connected in series, are divided into upper and lower groups, and are mutually parallelly and crossly arranged on the insulating supporting frame. Each group consists of two high voltage capacitors which are horizontally placed side by side. The low voltage output terminal, the low voltage end face fixation nut and the high voltage end face fixation nut are respectively arranged on upper and lower ends of the insulating supporting frame, and are respectively in conduction connection with low voltage ends and high voltage ends of four high voltage capacitors which are connected in series. The supporting insulator is further poured with epoxy resin. The supporting insulator has the advantages of small volume, light weight and low cost. The voltage sensor which uses the supporting insulator is suitable for a sulfur hexafluoride inflatable high voltage switch cabinet, a ring network cabinet, a pole-hanging switch and other insulating high voltage power distribution devices, and has the advantages of strong interference resistance, pressure resistance and lightning resistance, and high measurement precision and safety.

Description

A kind of supporting insulator and voltage sensor
Technical field
The utility model belongs to the voltage transformer technical field, particularly a kind of supporting insulator and voltage sensor that is applicable to the high-tension distribution equipment of sulfur hexafluoride gas-insulating and can supports 10KV high voltage charging equipment.
Background technology
Voltage transformer is indispensable connection device once and between the secondary electric air circuit in electric power system; be mainly used in the measurement of voltage parameter; for metering, protection and the monitoring unit of system provides signal; realize once, the electrical isolation of electrical secondary system; also can carry out voltage transformation, the high-voltage variable of primary side is changed into to the low-voltage of work such as being suitable for protective relaying device and electrical measuring instrument simultaneously.
At present, the high-tension switch cabinet of sulfur hexafluoride gas-filled, ring main unit, on-pole switch extensive use, but the layout of these device interior elements is all very compact, and the volume of traditional electromagnetic transformer is large, can't be installed in the high-tension distribution equipment of sulfur hexafluoride gas-insulating and use, can't realize the requirement of intelligent grid development for intelligent power distribution equipment.
The utility model content
For solving the above-mentioned problems in the prior art, the utility model provides the high-tension distribution equipment of the sulfur hexafluoride gas-insulatings such as a kind of high-tension switch cabinet applicable to sulfur hexafluoride gas-filled, ring main unit, on-pole switch, volume is little, lightweight, cost is low, anti-interference resistance to pressure and anti-lightning are strong, certainty of measurement and safe supporting insulator and voltage sensor.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of supporting insulator and voltage sensor, include insulating carriage, four high-voltage capacitances, low-voltage output, low pressure end face hold-down nut and high pressure end face hold-down nuts; Wherein, described four high-voltage capacitances are divided into upper and lower two groups and are arranged on described insulating carriage, and every group of two described high-voltage capacitances of being placed by horizontal Tile form, the intersection that is parallel to each other between described two groups of high-voltage capacitances, and there is each other gap in described four high-voltage capacitances and is connected in series by wire; Described low-voltage output and low pressure end face hold-down nut are located at the upper end of described insulating support, and the low-pressure end conducting of described four high-voltage capacitances together with series connection connects; Described high pressure end face hold-down nut is located at the lower end of described insulating support, and the high-pressure side conducting of described four high-voltage capacitances together with series connection connects; And, described supporting insulator also is cast with the epoxy resin that covers described insulating carriage, four high-voltage capacitances, low-voltage output, low pressure end face hold-down nut and high pressure end face hold-down nuts, and form respectively low pressure end face and high pressure end face in top and bottom, and an end that is provided with screwed hole of described low pressure end face hold-down nut and high pressure end face hold-down nut exposes to described low pressure end face and high pressure end face.
Further, between described two groups of high-voltage capacitances, be parallel to each other and square crossing.
Further, the cast of the four-way side of described epoxy resin forms annular cluster parachute.
Further, described supporting insulator is cylindrical, and it is highly 75mm, and diameter is 80 mm.
Further, described high-voltage capacitance is metallized film capacitor.
A kind of voltage sensor, include described supporting insulator, low-voltage arm and measurement cable, and the input of described low-voltage arm is connected with the sub-conducting of the low-voltage output of supporting insulator by high-voltage connection, and described measurement cable is arranged on the output of described low-voltage arm.
Further, described low-voltage arm includes shell, low-voltage arm electric capacity, protection device, earth terminal, input terminal and lead-out terminal, and described low-voltage arm electric capacity is located in described shell with the protection device mutual conduction with being connected; Described earth terminal, input terminal and lead-out terminal all are located on the outside sidewall of described shell, and described input terminal and lead-out terminal with the input of described low-voltage arm electric capacity, with output, conducting is connected respectively; One end of one end of described high-voltage connection and measurement cable is respectively equipped with the first splicing ear and the second splicing ear, and described the first splicing ear and the second splicing ear are arranged on respectively on the input terminal and lead-out terminal of described low-voltage arm.
Further, described shell is metal shell, the high-tension cable that described high-voltage connection is ac voltage withstanding 50kV, and described measurement cable is shielded type cable.
Further, described the first splicing ear and the second splicing ear are 50 Ω BNC connectors, and input terminal and the lead-out terminal of described low-voltage arm are BNC socket.
The beneficial effects of the utility model are:
The utility model passes through technique scheme, it is highly 75mm that supporting insulator can be made into, diameter is 80 mm, volume is little, lightweight, and cost is low, and high-voltage capacitance insulation effect each other is good, solved when doing withstand voltage test easily breakdown problem, cluster parachute can effectively increase the surface creepage distance simultaneously, and low pressure end face hold-down nut and high pressure end face hold-down nut are convenient between the copper bar of supporting insulator and various switch cubicles realize installing fix.
Adopted the high-tension distribution equipment of the voltage sensor of this supporting insulator applicable to sulfur hexafluoride gas-insulatings such as the high-tension switch cabinet of sulfur hexafluoride gas-filled, ring main unit, on-pole switchs, and the 10KV voltage step-down of input can be exported by measuring cable to 6.5V, and interference free performance is very strong, certainty of measurement can reach 0.5%, safe, stable performance, resistance to pressure and anti-lightning are strong.
The accompanying drawing explanation
Fig. 1 is the structural representation of a kind of voltage sensor embodiment described in the utility model;
Fig. 2 is the plan structure schematic diagram of supporting insulator in a kind of voltage sensor embodiment described in the utility model;
Fig. 3 be in a kind of voltage sensor embodiment described in the utility model supporting insulator look up structural representation.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:
As shown in Fig. 1 to Fig. 3:
The described a kind of voltage sensor of the utility model embodiment, include supporting insulator 1, low-voltage arm 2 and measure cable 3, the input of described low-voltage arm 2 is connected with low-voltage output 13 conductings of supporting insulator 1 by high-voltage connection 4, and described measurement cable 3 is arranged on the output of low-voltage arm 2.Concrete structure is:
Described supporting insulator 1 is cylindrical, and it is highly 75mm, and diameter is 80 mm, includes insulating carriage 11, four high-voltage capacitances 12, low-voltage output 13, low pressure end face hold-down nut 14 and high pressure end face hold-down nuts 15; Wherein, described four high-voltage capacitances 12 are metallized film capacitor, and be divided into upper and lower two groups and be arranged on insulating carriage 11, and every group of two high-voltage capacitances 12 of being placed by horizontal Tile form, between described two groups of high-voltage capacitances 12, be parallel to each other (vertically) intersect, and there is each other gap in four high-voltage capacitances 12 and is connected in series by wire (not showing in figure); Described low-voltage output 13 and low pressure end face hold-down nut 14 are located at the upper end of insulating support 11, and the low-pressure end conducting of four high-voltage capacitances 12 together with series connection connects; Described high pressure end face hold-down nut 15 is located at the lower end of insulating support 11, and the high-pressure side conducting of four high-voltage capacitances 12 together with series connection connects; And, described supporting insulator 1 also is cast with the epoxy resin 16 that covers insulating carriage 11, four high-voltage capacitances 12, low-voltage output 13, low pressure end face hold-down nut 14 and high pressure end face hold-down nuts 15, and form respectively low pressure end face 17 and high pressure end face 18 in top and bottom, and its four-way side cast forms annular cluster parachute 161; An end that is provided with screwed hole of described low pressure end face hold-down nut 14 and high pressure end face hold-down nut 15 exposes to low pressure end face 17 and high pressure end face 18.
Described low-voltage arm 2 includes shell 21, low-voltage arm electric capacity 22, protection device 23, earth terminal 24, input terminal 25 and lead-out terminal 26; Wherein, described shell 21 is metal shell, and described low-voltage arm electric capacity 22 is located in shell 21 with protection device 23 mutual conduction with being connected; Described earth terminal 24, input terminal 25 and lead-out terminal 26 all are located on the outside sidewall of shell 21, and input terminal 25 and lead-out terminal 26 is for BNC socket and with the input of low-voltage arm electric capacity 22, with output, conducting is connected respectively; Described earth terminal 24 is connected with earth connection.
The high-tension cable of described high-voltage connection 4 ac voltage withstanding 50kV, the one end is provided with the first splicing ear 41; Described measurement cable 3 is shielded type cable, and the work output voltage is for exchanging 6.5V, and the one end is provided with the second splicing ear 31; During assembling, described the first splicing ear 41 and the second splicing ear 31 are 50 Ω BNC connectors and are arranged on respectively on the input terminal 25 and lead-out terminal 26 of low-voltage arm 2.
Like this, it is highly 75mm that supporting insulator 1 described in the utility model can be made into, the small size that diameter is 80 mm, and between two groups of high-voltage capacitances 12, be parallel to each other (vertically) intersects, and fix by insulating carriage 11 positions, guarantee insulation distance each other, insulation effect is good, solved easy breakdown problem when doing withstand voltage test, have without saturated, volume is little, lightweight, cost is low, dry type film electric capacity can be not on fire and the advantage of blast, the annular cluster parachute 161 that epoxy resin 16 four-way side cast simultaneously form can effectively increase the surface creepage distance, it is fixing that the low pressure end face hold-down nut 14 be provided with and high pressure end face hold-down nut 15 are convenient between the copper bar of supporting insulator 1 and various switch cubicles to realize installing.Voltage sensor described in the utility model has adopted this supporting insulator 1 applicable to the high-tension switch cabinet of sulfur hexafluoride gas-filled, ring main unit, the high-tension distribution equipment of the sulfur hexafluoride gas-insulatings such as on-pole switch, and the 10KV voltage step-down of input can be exported by measuring cable 3 to 6.5V, and measurement cable 3 adopts shielded type cables, very strong interference free performance is arranged, can directly with digital instrument or the microcomputer protecting device of secondary device, be connected, certainty of measurement can reach 0.5%, the protection device 23 that adds low-voltage arm 2 can guarantee in the situation that low-voltage arm electric capacity 22 and high-voltage connection 4 broken strings, high pressure does not enter to be measured in cable 3, to guarantee the safety of personnel and secondary device, and this voltage sensor can be used on-40 degrees centigrade in the temperature environment of+70 degrees centigrade, and rate of temperature change is controlled in 1%, and it can tolerate industrial frequency withstand voltage 42kV mono-minute, tolerance 75kV lightning impulse, 10kV voltage high-volume is less than 3pC lower innings.
Above content is in conjunction with concrete optimal technical scheme further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.

Claims (9)

1. a supporting insulator, is characterized in that: include insulating carriage (11), four high-voltage capacitances (12), low-voltage output (13), low pressure end face hold-down nut (14) and high pressure end face hold-down nut (15); Wherein, described four high-voltage capacitances (12) are divided into upper and lower two groups and are arranged on described insulating carriage (11), and every group of two described high-voltage capacitances (12) of being placed by horizontal Tile form, the intersection that is parallel to each other between described two groups of high-voltage capacitances (12), and there is each other gap in described four high-voltage capacitances (12) and is connected in series by wire; Described low-voltage output (13) and low pressure end face hold-down nut (14) are located at the upper end of described insulating support (11), and the low-pressure end conducting of described four high-voltage capacitances (12) together with series connection connects; Described high pressure end face hold-down nut (15) is located at the lower end of described insulating support (11), and the high-pressure side conducting of described four high-voltage capacitances (12) together with series connection connects; And, described supporting insulator (1) also is cast with the epoxy resin (16) that covers described insulating carriage (11), four high-voltage capacitances (12), low-voltage output (13), low pressure end face hold-down nut (14) and high pressure end face hold-down nut (15), and form respectively low pressure end face (17) and high pressure end face (18) in top and bottom, and an end that is provided with screwed hole of described low pressure end face hold-down nut (14) and high pressure end face hold-down nut (15) exposes to described low pressure end face (17) and high pressure end face (18).
2. supporting insulator according to claim 1, is characterized in that: between described two groups of high-voltage capacitances (12), be parallel to each other and square crossing.
3. supporting insulator according to claim 2, is characterized in that: the four-way side cast formation annular cluster parachute (161) of described epoxy resin (16).
4. according to claim 1 or 2 or 3 described supporting insulators, it is characterized in that: described supporting insulator (1) is cylindrical, and it is highly 75mm, and diameter is 80 mm.
5. according to claim 1 or 2 or 3 described supporting insulators, it is characterized in that: described high-voltage capacitance (12) is metallized film capacitor.
6. a voltage sensor, it is characterized in that: include the claims 1 or 2 or 3 described supporting insulators (1), low-voltage arm (2) and measure cable (3), the input of described low-voltage arm (2) is connected with low-voltage output (13) conducting of supporting insulator (1) by high-voltage connection (4), and described measurement cable (3) is arranged on the output of described low-voltage arm (2).
7. voltage sensor according to claim 6, it is characterized in that: described low-voltage arm (2) includes shell (21), low-voltage arm electric capacity (22), protection device (23), earth terminal (24), input terminal (25) and lead-out terminal (26), and described low-voltage arm electric capacity (22) is located in described shell (21) with protection device (23) mutual conduction with being connected; Described earth terminal (24), input terminal (25) and lead-out terminal (26) all are located on the outside sidewall of described shell (21), and described input terminal (25) and lead-out terminal (26) with the input of described low-voltage arm electric capacity (22), with output, conducting is connected respectively; One end of one end of described high-voltage connection (4) and measurement cable (3) is respectively equipped with the first splicing ear (41) and the second splicing ear (31), and described the first splicing ear (41) and the second splicing ear (31) are arranged on respectively on the input terminal (25) and lead-out terminal (26) of described low-voltage arm (2).
8. voltage sensor according to claim 7, it is characterized in that: described shell (21) is metal shell, the high-tension cable that described high-voltage connection (4) is ac voltage withstanding 50kV, described measurement cable (3) is shielded type cable.
9. voltage sensor according to claim 7, it is characterized in that: described the first splicing ear (41) and the second splicing ear (31) are 50 Ω BNC connectors, and input terminal (25) and the lead-out terminal (26) of described low-voltage arm (2) are BNC socket.
CN 201320411756 2013-07-11 2013-07-11 Supporting insulator and voltage sensor Active CN203366868U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320411756 CN203366868U (en) 2013-07-11 2013-07-11 Supporting insulator and voltage sensor

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Application Number Priority Date Filing Date Title
CN 201320411756 CN203366868U (en) 2013-07-11 2013-07-11 Supporting insulator and voltage sensor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105097146A (en) * 2014-05-07 2015-11-25 澳大利亚电气制造有限公司 Medium voltage mixed insulator apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105097146A (en) * 2014-05-07 2015-11-25 澳大利亚电气制造有限公司 Medium voltage mixed insulator apparatus

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CB03 Change of inventor or designer information

Inventor after: Yao Fei

Inventor after: Qian Yuanchi

Inventor after: Xu Lizi

Inventor after: Ai Xiaoyu

Inventor before: Yao Fei

Inventor before: Qian Yuanchi

Inventor before: Xu Lizi

Inventor before: Ai Xiaozhong

C53 Correction of patent for invention or patent application
COR Change of bibliographic data

Free format text: CORRECT: INVENTOR; FROM: YAO FEI QIAN YUANCHI XU LIZI AI XIAOZHONG TO: YAO FEI QIAN YUANCHI XU LIZIAI XIAOYU