CN109524201A - A kind of damping thunder-proof type transformer - Google Patents

A kind of damping thunder-proof type transformer Download PDF

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Publication number
CN109524201A
CN109524201A CN201910030034.8A CN201910030034A CN109524201A CN 109524201 A CN109524201 A CN 109524201A CN 201910030034 A CN201910030034 A CN 201910030034A CN 109524201 A CN109524201 A CN 109524201A
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CN
China
Prior art keywords
lightning
thunder
transformer
conduction
fixedly mounted
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.)
Pending
Application number
CN201910030034.8A
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Chinese (zh)
Inventor
不公告发明人
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chang Yikun
Original Assignee
Chang Yikun
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chang Yikun filed Critical Chang Yikun
Priority to CN201910030034.8A priority Critical patent/CN109524201A/en
Publication of CN109524201A publication Critical patent/CN109524201A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/06Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00Details of transformers or inductances, in general
    • H01F27/34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields

Abstract

The invention belongs to transformer technology fields, specifically a kind of damping thunder-proof type transformer, including insulator outer rim, electro-insulating rubber column, strong magnets anode, strong magnets cathode, air bag, the first lightning conduction, the second lightning conduction, arrester, lightning conduction support rod, insulation fuel tank, transformer, transformer insulated fixed case, lightning protection lead, the first earthing pole, the second earthing pole, lightning-arrest downlead, third earthing pole and lightning rod;Influence caused by reducing transformer vibration can be shaken under the action of strong magnets cathode and the positive pole field of strong magnets up and down, air bag and electro-insulating rubber column play the role of positioning and buffering, further enhance damping effect;First lightning conduction and the second lightning conduction effectively prevent thunder and lightning from directly hitting transformer, lightning rod, which can play the role of actively guiding thunder and lightning, introduces ground end for thunder and lightning by lightning conduction, and when lightning voltage is excessively high, arrester and insulation fuel tank can play shunting and insulation.

Description

A kind of damping thunder-proof type transformer
Technical field
The invention belongs to transformer technology field, specifically a kind of damping thunder-proof type transformer.
Background technique
Transformer is the device for changing alternating voltage using the principle of electromagnetic induction, and main member is primary coil, secondary Grade coil and iron core (magnetic core), major function has: voltage transformation, current transformation, impedance transformation, isolation, pressure stabilizing (magnetic saturation transformation Device) etc., can be divided into, according to use: (electric furnace becomes, rectifies change, power frequency testing transformer, pressure regulation for power transformer and special transformer Device, mining change, audio-frequency transformer, intermediate-frequency transformer, high frequency transformer, impact transformer, instrument transformer, electronic transformer, Reactor, mutual inductor etc.), circuit symbol often uses T as the beginning of number.
Transformer will lead to it due to its own structure and shake during use, to generate a large amount of Noise, while can also cause security risk to the use of transformer itself;In thunderstorm weather, the meeting due to faradic Cause transformer itself to get shocked, influence and normal use are damaged on transformer device structure.In consideration of it, the present invention proposes one Kind damping thunder-proof type transformer, has the following characteristics that
(1) present invention proposes a kind of damping thunder-proof type transformer, passes through the strength being fixed on transformer insulated fixed case It can be shaken, be subtracted up and down under the action of magnet cathode and the positive pole field of the strong magnets for being fixed on insulator outer rim Small transformer influences caused by shaking at work, and air bag and electro-insulating rubber column can play the work of positioning and buffering With further enhancing damping effect.
(2) present invention proposes a kind of damping thunder-proof type transformer, and the first lightning conduction at the top of insulator outer rim is arranged in It can effectively prevent thunder and lightning with the second lightning conduction and directly hit transformer, lightning rod, which can play, actively guides thunder and lightning Thunder and lightning is introduced into ground end by lightning conduction, arrester and insulation fuel tank can guarantee that lightning conduction can be punctured when lightning voltage is excessively high Play the role of reducing lightning voltage and insulation when support rod, prevents thunder and lightning from entering transformer and it is damaged.
Summary of the invention
The object of the invention is that providing a kind of damping thunder-proof type transformer to solve the above-mentioned problems, pass through fixation The work of strong magnets cathode and the positive pole field of strong magnets for being fixed on insulator outer rim on transformer insulated fixed case It can be shaken up and down under, reduce influence caused by transformer shakes at work, air bag and insulation rubber Rubber column gel column can play the role of positioning and buffering, further enhance damping effect, be arranged at the top of insulator outer rim One lightning conduction and the second lightning conduction can effectively prevent thunder and lightning and directly hit transformer, and lightning rod can play thunder and lightning actively It guides and thunder and lightning is introduced by ground end by lightning conduction, arrester and insulation fuel tank can guarantee hit when lightning voltage is excessively high Play the role of reducing lightning voltage and insulation when wearing lightning conduction support rod, prevents thunder and lightning from entering transformer and it is damaged.
The present invention is achieved through the following technical solutions above-mentioned purpose, a kind of damping thunder-proof type transformer, including transformer, The transformer bottom is fixedly mounted on transformer insulated fixed case inner surface, table on the outside of the transformer insulated fixed case The end thereof contacts in face and electro-insulating rubber column, the other side of the electro-insulating rubber column are fixedly mounted on insulator outer rim inner surface, Strong magnets cathode, the fixed peace of the insulator outer rim inner surface is fixedly mounted in the transformer insulated fixed case outer surface Strong magnets anode is filled, is fixedly mounted and fills between the insulator outer rim inner surface and transformer insulated fixed case outer surface Gas air bag;The insulator outer rim slots to form sliding slot, the fixed insulation fuel tank of the sliding slot internal slide, the insulation fuel tank Lightning conduction support rod is fixedly mounted in top, and one end of the lightning conduction support rod is fixedly connected with the side of the first lightning conduction, described Lightning conduction support rod is fixedly mounted in the other side of first lightning conduction, and the one of arrester is fixedly mounted in lightning conduction support rod one end Lightning conduction support rod is fixedly mounted in end, the other end of the arrester, and the top of the lightning conduction support rod is fixedly mounted second Lightning conduction, the second lightning conduction top are fixedly connected with lightning rod;First lightning conduction and the second lightning conduction are drawn by lightning protection Line is connect with the first earthing pole and the second earthing pole, and the arrester is connect by lightning-arrest downlead with third earthing pole.
Preferably, the insulator outer rim is square box-structure, and inside is fixedly mounted on each face in eight faces Two electro-insulating rubber columns and two air bags.
Preferably, described two air bags are arranged between two electro-insulating rubber columns.
Preferably, it described second takes shelter from the thunder at the top of the first lightning conduction, the two structure type is completely the same.
Preferably, the insulation fuel tank is sealing box knot.
Preferably, the described second area ratio insulator outer rim upper surface area for taking shelter from the thunder in the first lightning conduction is big by percent Four.
The beneficial effects of the present invention are:
(1) present invention proposes a kind of damping thunder-proof type transformer, passes through the strength being fixed on transformer insulated fixed case It can be shaken, be subtracted up and down under the action of magnet cathode and the positive pole field of the strong magnets for being fixed on insulator outer rim Small transformer influences caused by shaking at work, and air bag and electro-insulating rubber column can play the work of positioning and buffering With further enhancing damping effect.
(2) present invention proposes a kind of damping thunder-proof type transformer, and the first lightning conduction at the top of insulator outer rim is arranged in It can effectively prevent thunder and lightning with the second lightning conduction and directly hit transformer, lightning rod, which can play, actively guides thunder and lightning Thunder and lightning is introduced into ground end by lightning conduction, arrester and insulation fuel tank can guarantee that lightning conduction can be punctured when lightning voltage is excessively high Play the role of reducing lightning voltage and insulation when support rod, prevents thunder and lightning from entering transformer and it is damaged.
Detailed description of the invention
Fig. 1 is overall structure orthogonal view of the present invention;
Fig. 2 is electro-insulating rubber column of the present invention, strong magnets anode and air bag layout drawing;
Fig. 3 connects plan view with lightning conduction support rod for present invention insulation fuel tank.
In figure: 1, insulator outer rim, 2, electro-insulating rubber column, 3, strong magnets anode, 4, strong magnets cathode, 5, inflation Air bag, 6, sliding slot, the 7, first lightning conduction, the 8, second lightning conduction, 9, arrester, 10, lightning conduction support rod, 11, third earthing pole, 12, insulate fuel tank, and 13, transformer, 14, transformer insulated fixed case, 15, lightning protection lead, the 16, first earthing pole, 17, second connects Earth polar, 18, lightning-arrest downlead, 19, lightning rod.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments;It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
It please refers to shown in Fig. 1-3, a kind of damping thunder-proof type transformer, including transformer 13;13 bottom of transformer is solid Dingan County is on transformer insulated 14 inner surface of fixed case;14 outer surface of transformer insulated fixed case and electro-insulating rubber The end thereof contacts of column 3 play the role of supporting transformer;The other side of the electro-insulating rubber column 3 is fixedly mounted on outside insulator 1 inner surface of frame;Strong magnets cathode 4 is fixedly mounted in 14 outer surface of transformer insulated fixed case;Outside the insulator Strong magnets anode 3 is fixedly mounted in 1 inner surface of frame, and the magnetic field generated between strong magnets anode 3 and strong magnets cathode 4 can To play the role of constraint positioning;Between 14 outer surface of 1 inner surface of insulator outer rim and transformer insulated fixed case Air bag 5 is fixedly mounted, air bag 5 plays buffering and supporting role;The fluting of insulator outer rim 1 forms sliding slot 6; The fixed insulation fuel tank 12 of 6 internal slide of sliding slot, increases the effect of lightning protection for filling insulating oil;The insulation fuel tank 12 pushes up Lightning conduction support rod 10 is fixedly mounted in portion;One end of the lightning conduction support rod 10 is fixedly connected with the side of the first lightning conduction 7, the One lightning conduction 7 plays the further supplementary function to the second lightning conduction 8, increases the success rate for intercepting thunder and lightning;Described first keeps away Lightning conduction support rod 10 is fixedly mounted in the other side of Thunder Network 7;The one of arrester 9 is fixedly mounted in described 10 one end of lightning conduction support rod End, arrester 9 can play the role of high current being transmitted to ground end, prevent it from further puncturing whole device to transformer 13 Ontology damages;Lightning conduction support rod 10 is fixedly mounted in the other end of the arrester 9;The top of the lightning conduction support rod 10 The second lightning conduction 8 is fixedly mounted in portion, and the second lightning conduction 8 can guide thunder and lightning, prevent it from directly hitting transformer 13;Described second It is fixedly connected with lightning rod 19 at the top of lightning conduction 8, lightning rod 19, which can play, actively guides thunder thunder and lightning by lightning conduction Electricity introduces ground end;First lightning conduction 7 and the second lightning conduction 8 pass through lightning protection lead 15 and the first earthing pole 16 and the second ground connection Pole 17 connects;The arrester 8 is connect by lightning-arrest downlead 18 with third earthing pole 11.
The insulator outer rim 1 is square box-structure, and two are fixedly mounted on each face in eight faces of inside absolutely Edge rubber column 3 and two air bags 5, electro-insulating rubber column 3 and air bag 5 play support first and position the work of transformer With, followed by buffer function can be played when transformer vibration;Described two air bags 5 are arranged in two insulation rubbers Between rubber column gel column 3;Described second lightning-arrest 8 at the top of the first lightning conduction 7, and the two structure type is completely the same, prevents thunder and lightning direct Hit transformer;The insulation fuel tank 12 is sealing box-structure, has insulating oil inside insulation effective 12, insulating oil must be kept Its ingredient is not contaminated;Described second lightning-arrest 8 the first lightning conduction 7 area ratio insulator 1 upper surface area of outer rim it is big by hundred / tetra- ten, bigger area can more effectively protect transformer.
In the use of the present invention, transformer 13 can generate vibration when in use, transformer insulated fixed case will drive at this time 14 vibrations, transformer insulated fixed case 14 and insulator outer rim 1 are positioned and are consolidated by air bag 5 and magnetic fields Fixed, electro-insulating rubber column 3 is fixedly connected with insulator outer rim 1 and transformer insulated fixed case 14 only contacts, therefore transformer The vibration that insulation fixed case 14 shakes will not be transferred to insulator outer rim 1 substantially;It is fixedly connected at the top of second lightning conduction 8 lightning-arrest Needle 19, lightning rod 19, which can play actively to guide thunder and lightning, introduces ground end for thunder and lightning by lightning conduction, and the second lightning conduction 8 can Effectively to prevent thunder and lightning from directly hitting transformer 13, when lightning voltage is excessively high can puncture lightning conduction support rod 10, take shelter from the thunder Device 9 can play the role of high current being transmitted to ground end, prevent it from further puncturing whole device and make to 13 ontology of transformer At damage, it is insulating oil inside the fuel tank 12 that insulate, can further prevents breakdown voltage from damaging to 13 ontology of transformer; First lightning conduction 7 plays the further supplementary function to the second lightning conduction 8, increases the success rate for intercepting thunder and lightning.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle It is fixed.

Claims (7)

1. a kind of damping thunder-proof type transformer, it is characterised in that: including transformer (13);The fixed peace in transformer (13) bottom On transformer insulated fixed case (14) inner surface;Transformer insulated fixed case (14) outer surface and electro-insulating rubber The end thereof contacts of column (3) play the role of supporting transformer;
The other side of the electro-insulating rubber column (3) is fixedly mounted on insulator outer rim (1) inner surface;It is described transformer insulated solid Determine case (14) outer surface and strong magnets cathode (4) are fixedly mounted;Strength is fixedly mounted in insulator outer rim (1) inner surface Magnet anode (3), the magnetic field generated between strong magnets anode (3) and strong magnets cathode (4) can play constraint positioning Effect;Inflation is fixedly mounted between insulator outer rim (1) inner surface and transformer insulated fixed case (14) outer surface Air bag (5), air bag (5) play buffering and supporting role;
Insulator outer rim (1) fluting forms sliding slot (6);Fixed insulation fuel tank (12) of sliding slot (6) internal slide, uses Increase the effect of lightning protection in filling insulating oil;Lightning conduction support rod (10) are fixedly mounted at the top of the insulation fuel tank (12);It is described One end of lightning conduction support rod (10) is fixedly connected with the side of the first lightning conduction (7), and the first lightning conduction (7) plays lightning-arrest to second The further supplementary function of net (8) increases the success rate for intercepting thunder and lightning;The fixed peace in the other side of first lightning conduction (7) It fills lightning conduction support rod (10);The one end of arrester (9), arrester (9) is fixedly mounted in described lightning conduction support rod (10) one end It can play the role of high current being transmitted to ground end.
2. a kind of damping thunder-proof type transformer according to claim 1, it is characterised in that: the arrester (9) it is another Lightning conduction support rod (10) are fixedly mounted in end;The second lightning conduction (8) are fixedly mounted in the top of the lightning conduction support rod (10), the Two lightning conductions (8) can guide thunder and lightning, prevent it from directly hitting transformer (13);It is fixed at the top of second lightning conduction (8) to connect It connects lightning rod (19), lightning rod (19), which can play actively to guide thunder and lightning, introduces ground end for thunder and lightning by lightning conduction;Institute It states the first lightning conduction (7) and the second lightning conduction (8) and passes through lightning protection lead (15) and the first earthing pole (16) and the second earthing pole (17) it connects;The arrester (8) is connect by lightning-arrest downlead (18) with third earthing pole (11).
3. a kind of damping thunder-proof type transformer according to claim 2, it is characterised in that: the insulator outer rim (1) For square box-structure, two electro-insulating rubber columns (3) and two air bags are fixedly mounted on each face in eight faces in inside (5)。
4. a kind of damping thunder-proof type transformer according to claim 3, it is characterised in that: described two air bags (5) It is arranged between two electro-insulating rubber columns (3).
5. a kind of damping thunder-proof type transformer according to claim 4, it is characterised in that: described second lightning-arrest (8) are the The top of one lightning conduction (7), the two structure type are completely the same.
6. a kind of damping thunder-proof type transformer according to claim 5, it is characterised in that: the insulation fuel tank (12) is close Seal box-structure.
7. a kind of damping thunder-proof type transformer according to claim 6, it is characterised in that: described second lightning-arrest (8) are the Area ratio insulator outer rim (1) upper surface area of one lightning conduction (7) is big by 40 percent.
CN201910030034.8A 2019-01-14 2019-01-14 A kind of damping thunder-proof type transformer Pending CN109524201A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910030034.8A CN109524201A (en) 2019-01-14 2019-01-14 A kind of damping thunder-proof type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910030034.8A CN109524201A (en) 2019-01-14 2019-01-14 A kind of damping thunder-proof type transformer

Publications (1)

Publication Number Publication Date
CN109524201A true CN109524201A (en) 2019-03-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111276321A (en) * 2020-02-24 2020-06-12 蚌埠普源电气科技有限公司 Distribution transformer grounding structure
CN112259346A (en) * 2020-09-25 2021-01-22 闫山 Lightning arrester of power transformer

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1083922A (en) * 1996-05-31 1998-03-31 Siemens Matsushita Components Gmbh & Co Kg Inductive device
CN2632584Y (en) * 2003-06-21 2004-08-11 刘刚 Lightning arrester of solar water heater
CN205862936U (en) * 2016-06-25 2017-01-04 重庆重变电器有限责任公司 A kind of service life length transformator
CN106373718A (en) * 2016-11-21 2017-02-01 国网山东省电力公司烟台供电公司 Power transformer
CN106449029A (en) * 2016-11-01 2017-02-22 广州市中潭空气净化科技有限公司 Burglarproof transformer with lightning protection device
CN206257200U (en) * 2016-11-07 2017-06-16 无锡乔尼威尔铁路设备科技有限公司 A kind of new train damper
CN206947108U (en) * 2017-07-05 2018-01-30 江苏世锦电力技术有限公司 A kind of quake-proof supporting structure of dry-type transformer
CN207009215U (en) * 2017-06-21 2018-02-13 内江新内变压器有限公司 A kind of lighning proof type power transformer
CN107863246A (en) * 2017-12-15 2018-03-30 惠州诺精密电子有限公司 A kind of transformer framework Winder and method
CN207302799U (en) * 2017-10-26 2018-05-01 新乡市振源电器股份有限公司 A kind of new isolating transformer protective device for solid high-voltage soft strater
CN207397886U (en) * 2017-11-20 2018-05-22 维益宏基集团有限公司 A kind of heat dissipation noise-decreasing device of miniature transformer
CN207398636U (en) * 2017-08-03 2018-05-22 江苏煌恒通信设备制造有限公司 A kind of integrated lightning protection distribution box
CN108630390A (en) * 2018-06-07 2018-10-09 肇庆中能创智信息科技有限公司 A kind of electric power electric transformer that water resistance is good

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1083922A (en) * 1996-05-31 1998-03-31 Siemens Matsushita Components Gmbh & Co Kg Inductive device
CN2632584Y (en) * 2003-06-21 2004-08-11 刘刚 Lightning arrester of solar water heater
CN205862936U (en) * 2016-06-25 2017-01-04 重庆重变电器有限责任公司 A kind of service life length transformator
CN106449029A (en) * 2016-11-01 2017-02-22 广州市中潭空气净化科技有限公司 Burglarproof transformer with lightning protection device
CN206257200U (en) * 2016-11-07 2017-06-16 无锡乔尼威尔铁路设备科技有限公司 A kind of new train damper
CN106373718A (en) * 2016-11-21 2017-02-01 国网山东省电力公司烟台供电公司 Power transformer
CN207009215U (en) * 2017-06-21 2018-02-13 内江新内变压器有限公司 A kind of lighning proof type power transformer
CN206947108U (en) * 2017-07-05 2018-01-30 江苏世锦电力技术有限公司 A kind of quake-proof supporting structure of dry-type transformer
CN207398636U (en) * 2017-08-03 2018-05-22 江苏煌恒通信设备制造有限公司 A kind of integrated lightning protection distribution box
CN207302799U (en) * 2017-10-26 2018-05-01 新乡市振源电器股份有限公司 A kind of new isolating transformer protective device for solid high-voltage soft strater
CN207397886U (en) * 2017-11-20 2018-05-22 维益宏基集团有限公司 A kind of heat dissipation noise-decreasing device of miniature transformer
CN107863246A (en) * 2017-12-15 2018-03-30 惠州诺精密电子有限公司 A kind of transformer framework Winder and method
CN108630390A (en) * 2018-06-07 2018-10-09 肇庆中能创智信息科技有限公司 A kind of electric power electric transformer that water resistance is good

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111276321A (en) * 2020-02-24 2020-06-12 蚌埠普源电气科技有限公司 Distribution transformer grounding structure
CN112447375A (en) * 2020-02-24 2021-03-05 蚌埠普源电气科技有限公司 Distribution transformer grounding method
CN112259346A (en) * 2020-09-25 2021-01-22 闫山 Lightning arrester of power transformer

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Application publication date: 20190326

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