CN204422571U - A kind of inflatable testing transformer - Google Patents

A kind of inflatable testing transformer Download PDF

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Publication number
CN204422571U
CN204422571U CN201520146882.2U CN201520146882U CN204422571U CN 204422571 U CN204422571 U CN 204422571U CN 201520146882 U CN201520146882 U CN 201520146882U CN 204422571 U CN204422571 U CN 204422571U
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China
Prior art keywords
casing
gas
inflatable
testing transformer
coil
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Active
Application number
CN201520146882.2U
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Chinese (zh)
Inventor
张建红
罗小勇
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He Zhong Electrical Equipment Manufacturing Co Ltd Of Wuhan City
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He Zhong Electrical Equipment Manufacturing Co Ltd Of Wuhan City
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Priority to CN201520146882.2U priority Critical patent/CN204422571U/en
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Abstract

The utility model relates to a kind of transformer, belongs to gas electrical test equipment field, is specifically related to a kind of inflatable testing transformer.Comprise: the casing being filled with gas in it, be fixed on the voltage equalizing ball on casing by bushing, be positioned at the coil of casing, wherein: in described bushing, be provided with high-voltage output line, described high-voltage output line one end is connected with the high pressure winding of coil, and the other end is positioned on voltage equalizing ball; The shell of described casing is provided be connected with the low pressure winding of coil secondary and presses input end.Therefore, the utility model tool has the following advantages: (1) structure is simple: this reality is novel by reasonably design, reduces the volume of equipment, weight and production cost; (2) electric pressure of separate unit testing transformer can reach 300KV, thus expands pressure alteration scope; (3) without oil pollution, environmental protection more.

Description

A kind of inflatable testing transformer
Technical field
The utility model relates to a kind of transformer, belongs to gas electrical test equipment field, is specifically related to a kind of inflatable testing transformer.
Background technology
Power frequency withstand test, namely applies power-frequency voltage to test specimen, with the insulation ability to bear checking test specimen to raise power-frequency voltage, is the most effective and the most direct test method of qualification test specimen dielectric strength.
Transformer is one of critical elements of power frequency withstand test.Under power frequency condition, because test specimen electric capacity is larger, or trial voltage requires higher, also have higher requirement accordingly to the power supply capacity of test unit, thus, often single-piece volume is large for the HT testing transformer in traditional industrial frequency withstand voltage device, Heavy Weight, thus make power frequency withstand test device be not easy to onsite moving, and be not easy to combination in any, dirigibility is poor.Further, existing HT testing transformer pressure range is limited, can not the frock experimental voltage demand of flexible Application under various scene.
Utility model content
The utility model mainly solves volume of transformer existing in prior art and quality is large, and the technical matterss such as pressure range is little, provide a kind of inflatable testing transformer.This transformer, by reasonably design, reduces the volume of equipment, weight and production cost, is convenient to onsite moving and combination installation, has higher dirigibility; And decrease leakage flux by coaxially arranged, increase the coupling between winding, the electric pressure of separate unit testing transformer can reach 300KV, thus expands pressure alteration scope, and without oil pollution.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals:
A kind of inflatable testing transformer, comprise: the casing being filled with gas in it, the voltage equalizing ball on casing is fixed on by bushing, be positioned at the coil of casing, wherein: in described bushing, be provided with high-voltage output line, described high-voltage output line one end is connected with the high pressure winding of coil, and the other end is positioned on voltage equalizing ball; The shell of described casing is provided be connected with the low pressure winding of coil secondary and presses input end.
Optimize, above-mentioned a kind of inflatable testing transformer, is provided with the high voltage silicon rectifier stack be serially connected with on described high-voltage output line in described bushing.
Optimize, above-mentioned a kind of inflatable testing transformer, is provided with in described bushing for the moveable short-circuit rods by described high voltage silicon rectifier stack short circuit.
Optimize, above-mentioned a kind of inflatable testing transformer, described gas is sulfur hexafluoride.
Optimize, above-mentioned a kind of inflatable testing transformer, described casing is also provided with the inflation nozzle that gas-filled tube is connected with gas filling bottle, this inflation nozzle is provided with gas filling valve, and described gas-filled tube is provided with gas meter, described casing is provided with tensimeter.
Optimize, above-mentioned a kind of inflatable testing transformer, described coil comprises: iron core, be arranged on iron core primary side secondary low pressure winding and measure winding, be arranged on the secondary high-pressure winding of iron core secondary side, this secondary high-pressure winding is connected with one end of high-voltage output line, and described time low pressure winding is connected with secondary pressure input end.
Therefore, the utility model tool has the following advantages: (1) structure is simple: this reality is novel by reasonably design, reduce the volume of equipment, weight and production cost, compared with traditional oil immersed type light test transformer, weight alleviates 20%-60% and be convenient to onsite moving and combination installation, there is higher dirigibility; (2) highly versatile: decrease leakage flux by coaxially arranged, increases the coupling between winding, and the electric pressure of separate unit testing transformer can reach 300KV, thus expands pressure alteration scope; (3) without oil pollution, various high voltage electric equipment, electric elements, the dielectric(al) tests of insulating material under power frequency or high direct voltage such as electric system, industrial and mining enterprises, scientific research department can be adapted to.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the utility model transformer.
Fig. 2 is the partial sectional view of the utility model transformer.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In figure, casing 1, bushing 2, voltage equalizing ball 3, coil 4, iron core 401, secondary low pressure winding 402, measurement winding 403, secondary high-pressure winding 404, gas 5, high-voltage output line 6, high voltage silicon rectifier stack 7, short-circuit rods 8, secondary pressure input end 9, tensimeter 10, inflation nozzle 11, gas filling valve 12, gas-filled tube 13, gas meter 14, gas filling bottle 15.
Embodiment 1:
See Fig. 1-2, a kind of inflatable testing transformer, comprise: the casing 1 being filled with gas 5 in it, the voltage equalizing ball 3 on casing 1 is fixed on by bushing 2, be positioned at the coil 4 of casing 1, wherein: be provided with high-voltage output line 6 in bushing 2, high-voltage output line 6 one end is connected with the high pressure winding of coil 4, and the other end is positioned on voltage equalizing ball 3; The shell of casing 1 is provided be connected with the low pressure winding of coil 4 time press input end 9, be provided with in bushing 2 and be serially connected with high voltage silicon rectifier stack 7 on high-voltage output line 6 and for the moveable short-circuit rods 8 by high voltage silicon rectifier stack 7 short circuit; Casing 1 is also provided with the inflation nozzle 11 that gas-filled tube 13 is connected with gas filling bottle 15, this inflation nozzle 11 is provided with gas filling valve 12, gas-filled tube 13 is provided with gas meter 14, casing 1 is provided with tensimeter 10, in gas filling bottle 15, be full of sulfur hexafluoride gas.
Wherein, coil 4 comprises: iron core 401, be arranged on iron core 401 primary side secondary low pressure winding 402 and measure winding 403, be arranged on the secondary high-pressure winding 404 of iron core 401 secondary side, this secondary high-pressure winding 404 is connected with one end of high-voltage output line 6, and secondary low pressure winding 402 is connected with secondary pressure input end 9.
During transformer work, be 380V plant-grid connection with more than power frequency 220V10KVA, the secondary low pressure winding 402 of transformer is exported to through the outer attached 0-200V of being adjusted to of the above pressure regulator of automatic coupling voltage regulator 50KVA or 0-400V voltage, according to electromagnetic induction principle, can obtain the high voltage needed for test at testing transformer secondary high-pressure winding 404, this high pressure exports through high-voltage output line 6.
High voltage silicon rectifier stack 7 is serially connected in high tension loop makes half-wave rectification, to obtain DC high voltage.When with short-circuit rods 8 by high voltage silicon rectifier stack 7 short circuit time, power frequency high voltage can be obtained, as interchange output state; When cancelling short-circuit rods 8, as direct current output state.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ casing 1, bushing 2, voltage equalizing ball 3, coil 4, iron core 401, secondary low pressure winding 402 herein, measure the terms such as winding 403, secondary high-pressure winding 404, gas 5, high-voltage output line 6, high voltage silicon rectifier stack 7, short-circuit rods 8, secondary pressure input end 9, tensimeter 10, inflation nozzle 11, gas filling valve 12, gas-filled tube 13, gas meter 14, gas filling bottle 15, do not get rid of the possibility using other term.Using these terms, is to describe more easily and explaining essence of the present utility model; The restriction that they are construed to any one additional is all contrary with the utility model spirit.

Claims (6)

1. an inflatable testing transformer, it is characterized in that, comprise: the casing (1) being filled with gas (5) in it, the voltage equalizing ball (3) on casing (1) is fixed on by bushing (2), be positioned at the coil (4) of casing (1), wherein: in described bushing (2), be provided with high-voltage output line (6), described high-voltage output line (6) one end is connected with the high pressure winding of coil (4), and the other end is positioned on voltage equalizing ball (3); The shell of described casing (1) is provided be connected with the low pressure winding of coil (4) secondary and presses input end (9).
2. a kind of inflatable testing transformer according to claim 1, is characterized in that, is provided with the high voltage silicon rectifier stack (7) be serially connected with on described high-voltage output line (6) in described bushing (2).
3. a kind of inflatable testing transformer according to claim 2, is characterized in that, is provided with for the moveable short-circuit rods (8) by described high voltage silicon rectifier stack (7) short circuit in described bushing (2).
4. a kind of inflatable testing transformer according to claim 1, is characterized in that, described gas (5) is sulfur hexafluoride.
5. a kind of inflatable testing transformer according to claim 1, it is characterized in that, described casing (1) is also provided with the inflation nozzle (11) that gas-filled tube (13) is connected with gas filling bottle (15), this inflation nozzle (11) is provided with gas filling valve (12), described gas-filled tube (13) is provided with gas meter (14), described casing (1) is provided with tensimeter (10).
6. a kind of inflatable testing transformer according to claim 1, it is characterized in that, described coil (4) comprising: iron core (401), be arranged on iron core (401) primary side secondary low pressure winding (402) and measure winding (403), be arranged on the secondary high-pressure winding (404) of iron core (401) secondary side, this secondary high-pressure winding (404) is connected with one end of high-voltage output line (6), and described time low pressure winding (402) presses input end (9) to be connected with secondary.
CN201520146882.2U 2015-03-16 2015-03-16 A kind of inflatable testing transformer Active CN204422571U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520146882.2U CN204422571U (en) 2015-03-16 2015-03-16 A kind of inflatable testing transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520146882.2U CN204422571U (en) 2015-03-16 2015-03-16 A kind of inflatable testing transformer

Publications (1)

Publication Number Publication Date
CN204422571U true CN204422571U (en) 2015-06-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105244141A (en) * 2015-11-10 2016-01-13 李聪 Inflatable transformer
CN106298170A (en) * 2016-08-22 2017-01-04 沈国兴 A kind of high-tension transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105244141A (en) * 2015-11-10 2016-01-13 李聪 Inflatable transformer
CN106298170A (en) * 2016-08-22 2017-01-04 沈国兴 A kind of high-tension transformer

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: An inflatable test transformer

Effective date of registration: 20220415

Granted publication date: 20150624

Pledgee: Bank of China Limited Wuhan Municipal sub branch

Pledgor: WUHAN UNITED ELECTRICAL EQUIPMENT MANUFACTURING CO.,LTD.

Registration number: Y2022420000105

PE01 Entry into force of the registration of the contract for pledge of patent right