CN105097205A - Freeze-prevention device and method for moisture absorbent of oil immersed transformer - Google Patents
Freeze-prevention device and method for moisture absorbent of oil immersed transformer Download PDFInfo
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- CN105097205A CN105097205A CN201510568831.3A CN201510568831A CN105097205A CN 105097205 A CN105097205 A CN 105097205A CN 201510568831 A CN201510568831 A CN 201510568831A CN 105097205 A CN105097205 A CN 105097205A
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- oil
- thermal conductive
- conductive wire
- hygroscopic agent
- immersed tube
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Abstract
The invention relates to the technical field of an oil immersed transformer, in particular to a freeze-prevention device for a moisture absorbent of the oil immersed transformer. The freeze-prevention device comprises a moisture absorber (9), wherein the moisture absorbent (91) is arranged in the moisture absorber, the freeze-prevention device is characterized by also comprising an immersed pie (1), a transformer oil (11), a heat conduction line (5) and two heat conduction wire strands (51), the heat conduction wire strands (51) are respectively welded at the two ends of the heat conduction line (5), the transformer oil (2) is arranged in the immersed pipe (1), the heat conduction wire strand (51) arranged at one end of the heat conduction line (5) is immersed in the transformer oil (11), the heat conduction wire strand (51) arranged at the other end of the heat conduction line (5) is dispersed in the moisture absorbent (91) of the moisture absorber (9), and the two ends of the heat conduction line (5) are respectively and hermetically connected with the immersed pipe (1) and the moisture absorber (9). The freeze-prevent device and method for the moisture absorbent of the oil immersed transformer, provided by the invention, have the characteristics of convenience in operation, high reliability, high efficiency and no need of extra energy supply, and have favorable application prospects.
Description
Technical field
The present invention relates to oil-filled transformer technical field, relate to a kind of anti-freezing apparatus and method of hygroscopic agent of oil-filled transformer more specifically.
Background technology
Dehydrating breather is also known as respirator, and Main Function adsorbs the moisture, the impurity that enter in the oil-filled equipment of oil-filled transformer etc. in conservator air, plays very important filtration, slow down the degradation speed of transformer oil.Dehydrating breather is generally made up of lubricating cup, hygroscopic agent cup, joint for respiratory device, this four part of seal gasket.
Dehydrating breather is arranged on the pipe end of conservator and air communication.When transformer temperature raises, oil in fuel tank can corresponding expansion, therefore the oil level in conservator also can correspondingly raise, air in installation for transformer is compressed, pressure increase, in order to maintain the pressure balance in transformer, the partial air in conservator will enter air by moisture absorber of transformer, at this moment the catchment cup of dehydrating breather is interior will there is bubble, very violent sometimes.The process of air flowing: conservator → dehydrating breather union → cloche (hygroscopic agent) → glass infuser → sheet for oil seal → catchment cup → pore → air.When transformer temperature declines, oil in fuel tank can corresponding contraction, therefore the oil level in conservator also can correspondingly decline, the volume of oil reduces, and in installation for transformer, air is by dilatation, and pressure reduces, in order to maintain the pressure balance in transformer, pressure in conservator will suck air to balance by dehydrating breather, and at this moment the glass infuser of dehydrating breather is interior will occur bubble, sometimes also can be very violent.The process of air flowing: air → pore → catchment cup → sheet for oil seal → glass infuser → cloche (hygroscopic agent) → dehydrating breather union → conservator.
While filtration, the hygroscopic agent moisture also absorbed in air itself becomes pale red (below it referred to as " variable color "), so must change it after hygroscopic agent variable color, to ensure the good filtration moisture pick-up properties of hygroscopic agent, thus ensure the insulation property of transformer oil.By be defined in hygroscopic agent variable color amount exceed 2/3 of hygroscopic agent cup volume time, must be changed.But, there is following problem in prior art: when hygroscopic agent variable color amount does not exceed 2/3 of hygroscopic agent cup volume, once be operated in the following environment of zero centigrade, the hygroscopic agent of deliquescence easily freezes, hinder eupnea.As do not solved in time, because transformer lasts work or ambient temperature raise, when thawing, tank pressure will suddenly change, and Buchholz relay malfunction occurs.
Summary of the invention
The present invention, for overcoming at least one defect (deficiency) described in above-mentioned prior art, provides a kind of hygroscopic agent of oil-filled transformer anti-freezing apparatus and method.
The present invention is intended to solve the problems of the technologies described above at least to a certain extent.
Primary and foremost purpose of the present invention is to provide a kind of anti-freezing device of hygroscopic agent of oil-filled transformer.
A further object of the present invention is to provide a kind of anti-freezing method of hygroscopic agent of oil-filled transformer.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
The anti-freezing device of hygroscopic agent of oil-filled transformer, comprises dehydrating breather, and described dehydrating breather, built with hygroscopic agent, also includes immersed tube, transformer oil, thermal conductive wire, two bundle heat conduction tow; Described heat conduction tow is welded on the two ends of thermal conductive wire respectively, and described transformer oil is contained in immersed tube, and the heat conduction tow being arranged in thermal conductive wire one end is immersed in transformer oil, and the heat conductive filament's bundle being arranged in the thermal conductive wire other end is dispersed in the hygroscopic agent of dehydrating breather; The two ends of described thermal conductive wire are tightly connected with immersed tube and dehydrating breather respectively.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
The anti-freezing device of hygroscopic agent of oil-filled transformer provided by the invention in use, transformer body is produced heat, to be passed in fuel tank transformer oil → heat conduction tow → thermal conductive wire → heat conduction tow → hygroscopic agent in transformer oil → immersed tube → immersed tube successively by heat transfer, thus the temperature that improve hygroscopic agent avoids it to freeze.It has easy and simple to handle, reliability is high, efficiency is high and do not need the feature of extra energy supply, have a good application prospect.
Further, be connected with pipeline for ease of dehydrating breather, also comprise a dehydrating breather transition joint, described dehydrating breather transition joint is arranged on the opening of dehydrating breather, described dehydrating breather transition joint is provided with cable-through hole, and one end of described thermal conductive wire to be penetrated in cable-through hole and is tightly connected by seal head with cable-through hole.
Further, for ease of sealing, the opening of described immersed tube is provided with sealed joint pipe, and one end of described thermal conductive wire to be penetrated in sealed joint pipe and is tightly connected by seal head in sealed joint pipe.
Further, avoid heat loss for improving heat conduction efficiency, described thermal conductive wire is coated with insulated sheath.
Further, for ease of sealing, the two ends of described dehydrating breather transition joint are equipped with flange, and wherein one end is connected by flange seal with the opening of dehydrating breather, and the other end is connected with union flange seal.
Further, as optimal technical scheme, described thermal conductive wire is the copper conductor of sectional area 15 ~ 30 square millimeters; Described heat conduction tow is copper wire bundle, and the diameter of single copper wire is between 0.2 ~ 0.5 millimeter; Described thermal conductive wire and heat conduction tow are welded to connect.
Further, as optimal technical scheme, described immersed tube caliber is between 25 ~ 50mm, and the immersed tube degree of depth is between 70 ~ 100mm.
Further, the present invention also provides a kind of hygroscopic agent of oil-filled transformer anti-freezing method, below oil tank of transformer top cover, weld an immersed tube and fill transformer oil in immersed tube, one end of thermal conductive wire is connected with transformer oil, the other end of thermal conductive wire is connected with the hygroscopic agent of dehydrating breather, by thermal conductive wire by the temperature conduction of transformer oil in hygroscopic agent, make the temperature of hygroscopic agent remain on more than zero centigrade, in order to avoid it freezes.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
The anti-freezing method of hygroscopic agent of oil-filled transformer provided by the invention, transformer body is produced heat, to be passed in fuel tank transformer oil → thermal conductive wire → hygroscopic agent in transformer oil → immersed tube → immersed tube successively by heat transfer, thus the temperature that improve hygroscopic agent avoids it to freeze.It has easy and simple to handle, reliability is high, efficiency is high and do not need the feature of extra energy supply, have a good application prospect.
Further, the method comprises the following steps in detail:
A, on fuel tank top cover, bore immersed tube hole, aperture 25 ~ 50mm;
B, in immersed tube hole, weld immersed tube, the dark 70 ~ 100mm of immersed tube;
C, processing thermal conductive wire, the copper conductor choosing a sectional area 15 ~ 30 square millimeters, as thermal conductive wire, welds the copper wire bundle of single diameter between 0.2-0.5mm as heat conduction tow at thermal conductive wire two ends;
D, processing dehydrating breather transition joint, cable-through hole offered by transition joint;
E, to thermal conductive wire suit insulated sheath;
F, thermal conductive wire one end is arranged in immersed tube;
G, in immersed tube, be full of transformer oil and seal;
H, the other end of thermal conductive wire is arranged in dehydrating breather through the cable-through hole of dehydrating breather transition joint, heat conductive filament's bundle is dispersed in hygroscopic agent;
Cable-through hole on i, sealing dehydrating breather transition joint.
Accompanying drawing explanation
Fig. 1 is the structural representation of oil-filled transformer.
Fig. 2 is the structural representation of the anti-freezing device of hygroscopic agent of oil-filled transformer.
Fig. 3 is the structural representation of immersed tube.
Fig. 4 is the structural representation of dehydrating breather transition joint.
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent; In order to better the present embodiment is described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable; The corresponding same or analogous parts of same or analogous label; The term describing position relationship in accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent.
Embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
Embodiment 1
The anti-freezing device of hygroscopic agent of oil-filled transformer, comprises dehydrating breather 9, and described dehydrating breather restraints heat conduction tow 51 and dehydrating breather transition joint 7 built with hygroscopic agent 91, immersed tube 1, transformer oil 11, thermal conductive wire 5, two; Described thermal conductive wire 5 is the copper conductor of sectional area 30 square millimeters; Described heat conduction tow 51 is copper wire bundle, and the diameter of single copper wire is 0.3 millimeter; Described heat conduction tow 51 lays respectively at the two ends of thermal conductive wire 5 and is welded to connect with thermal conductive wire 5; Described immersed tube 1 caliber is 30mm, and the immersed tube degree of depth is 100mm; Described transformer oil 2 is contained in immersed tube 1; The heat conduction tow 51 being arranged in thermal conductive wire 5 one end is immersed in transformer oil 11, and the heat conduction tow 51 being arranged in thermal conductive wire 5 other end is dispersed in the hygroscopic agent 91 of dehydrating breather 9; Described dehydrating breather transition joint 7 is arranged on the opening of dehydrating breather 9, and described dehydrating breather transition joint 7 is provided with cable-through hole 73, and one end of described thermal conductive wire 5 to be penetrated in cable-through hole 73 and is tightly connected by seal head 4 with cable-through hole 73; The opening of described immersed tube 1 is provided with sealed joint pipe 3, and one end of described thermal conductive wire 5 to be penetrated in sealed joint pipe 3 and is tightly connected by seal head 4 with sealed joint pipe 3; Described thermal conductive wire 5 is coated with insulated sheath 6; The two ends of described dehydrating breather transition joint 7 are equipped with flange 71, and wherein one end is connected by flange seal with the opening of dehydrating breather 9, and the other end and union flange 10 are tightly connected.
Using method, in use, immersed tube 1 to be fixed on below fuel tank top cover 8 and to immerse in the transformer oil in fuel tank, by the heat that transformer body produces, to be passed in fuel tank transformer oil → heat conduction tow → thermal conductive wire → heat conduction tow → hygroscopic agent in transformer oil → immersed tube → immersed tube successively by heat transfer, thus the temperature that improve hygroscopic agent avoids it to freeze.
Embodiment 2
A kind of anti-freezing method of hygroscopic agent of oil-filled transformer, below oil tank of transformer top cover 8, weld an immersed tube 1 and in immersed tube, fill transformer oil 11, one end of thermal conductive wire 5 is immersed in transformer oil 11, the other end of thermal conductive wire 5 is dispersed in the hygroscopic agent 91 of dehydrating breather 9, by thermal conductive wire 5 by the temperature conduction of depressor oil 11 in hygroscopic agent 91, the temperature of hygroscopic agent 91 is made to remain on more than zero centigrade, in order to avoid it freezes.
Specifically comprise following detailed step:
A, on fuel tank top cover 8, bore immersed tube hole, aperture 40mm;
B, in immersed tube hole, weld immersed tube 1, the dark 80mm of immersed tube;
C, processing thermal conductive wire 5, the copper conductor choosing a sectional area 23 square millimeters is as thermal conductive wire 5, and welding single diameter at thermal conductive wire 5 two ends is that the copper wire bundle of 0.3mm is as heat conduction tow 51;
D, processing dehydrating breather transition joint 7, transition joint is offered cable-through hole 73;
E, insulated sheath 6 is set with to thermal conductive wire 5;
F, thermal conductive wire 5 one end is arranged in immersed tube 1;
G, in immersed tube 1, be full of transformer oil 11 and seal.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection range that all should be included in the claims in the present invention.
Claims (9)
1. the anti-freezing device of the hygroscopic agent of an oil-filled transformer, comprise dehydrating breather (9), described dehydrating breather, built with hygroscopic agent (91), is characterized in that: also include immersed tube (1), transformer oil (11), thermal conductive wire (5), two bundles heat conduction tow (51); Described heat conduction tow (51) is welded on the two ends of thermal conductive wire (5) respectively, described transformer oil (2) is contained in immersed tube (1), the heat conduction tow (51) being arranged in thermal conductive wire (5) one end is immersed in transformer oil (11), and the heat conduction tow (51) being arranged in thermal conductive wire (5) other end is dispersed in the hygroscopic agent (91) of dehydrating breather (9); The two ends of described thermal conductive wire (5) are tightly connected with immersed tube (1) and dehydrating breather (9) respectively.
2. the anti-freezing device of the hygroscopic agent of oil-filled transformer according to claim 1, it is characterized in that: also comprise a dehydrating breather transition joint (7), described dehydrating breather transition joint (7) is arranged on the opening of dehydrating breather (9), described dehydrating breather transition joint (7) is provided with cable-through hole (73), and one end of described thermal conductive wire (5) to be penetrated in cable-through hole (73) and is tightly connected by seal head (4) with cable-through hole (73).
3. the anti-freezing device of the hygroscopic agent of oil-filled transformer according to claim 1, it is characterized in that: the opening of described immersed tube (1) is provided with sealed joint pipe (3), one end of described thermal conductive wire (5) to be penetrated in sealed joint pipe (3) and is tightly connected by seal head (4) with sealed joint pipe (3).
4. the anti-freezing device of the hygroscopic agent of oil-filled transformer according to claim 1, is characterized in that: described thermal conductive wire (5) is coated with insulated sheath (6).
5. the anti-freezing device of the hygroscopic agent of oil-filled transformer according to claim 2, it is characterized in that: the two ends of described dehydrating breather transition joint (7) are equipped with flange (71), wherein one end is connected by flange seal with the opening of dehydrating breather (9), and the other end and union flange (10) are tightly connected.
6. the anti-freezing device of the hygroscopic agent of oil-filled transformer according to claim 1, is characterized in that: described thermal conductive wire (5) is the copper conductor of sectional area 15 ~ 30 square millimeters; Described heat conduction tow (51) is copper wire bundle, and the diameter of single copper wire is between 0.2 ~ 0.5 millimeter.
7. the anti-freezing device of the hygroscopic agent of oil-filled transformer according to claim 1, is characterized in that: described immersed tube (1) caliber is between 25 ~ 50mm, and the immersed tube degree of depth is between 70 ~ 100mm.
8. the anti-freezing method of the hygroscopic agent of an oil-filled transformer, it is characterized in that: weld an immersed tube (1) in oil tank of transformer top cover (8) below and in immersed tube, fill transformer oil (11), one end of thermal conductive wire (5) is connected with transformer oil (11), the other end of thermal conductive wire (5) is connected with the hygroscopic agent (91) of dehydrating breather (9), by thermal conductive wire (5) by the temperature conduction of depressor oil (11) in hygroscopic agent (91), the temperature of hygroscopic agent (91) is made to remain on more than zero centigrade, in order to avoid it freezes.
9. the anti-freezing method of the hygroscopic agent of oil-filled transformer according to claim 8, is characterized in that: the method comprises the following steps in detail:
A, bore immersed tube hole, aperture 25 ~ 50mm fuel tank top cover (8) is upper;
B, in immersed tube hole, weld immersed tube (1), the dark 70 ~ 100mm of immersed tube;
C, processing thermal conductive wire (5), the copper conductor choosing a sectional area 15 ~ 30 square millimeters, as thermal conductive wire (5), welds the copper wire bundle of single diameter between 0.2-0.5mm as heat conduction tow (51) at thermal conductive wire (5) two ends;
D, processing dehydrating breather transition joint (7), transition joint is offered cable-through hole (73);
E, to thermal conductive wire (5) suit insulated sheath (6);
F, thermal conductive wire (5) one end is arranged in immersed tube (1);
G, in immersed tube (1), be full of transformer oil (11) and seal;
H, the other end of thermal conductive wire (5) is arranged in dehydrating breather (9) through the cable-through hole (73) of dehydrating breather transition joint (7), heat conduction tow (51) is dispersed in hygroscopic agent (91);
Cable-through hole (73) in i, sealing dehydrating breather transition joint (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510568831.3A CN105097205B (en) | 2015-09-09 | 2015-09-09 | A kind of anti-freezing apparatus and method of the hygroscopic agent of oil-filled transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510568831.3A CN105097205B (en) | 2015-09-09 | 2015-09-09 | A kind of anti-freezing apparatus and method of the hygroscopic agent of oil-filled transformer |
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| CN105097205A true CN105097205A (en) | 2015-11-25 |
| CN105097205B CN105097205B (en) | 2017-08-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106653293A (en) * | 2016-12-07 | 2017-05-10 | 广东电网有限责任公司东莞供电局 | Double-oil level perspective oil cup device for main transformer respirator |
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| CN203538722U (en) * | 2013-10-23 | 2014-04-16 | 林阿成 | Electric heating table |
| CN204991366U (en) * | 2015-09-09 | 2016-01-20 | 明珠电气有限公司 | Device that freezes is prevented to oil -immersed transformer's hygroscopic agent |
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| US2083732A (en) * | 1932-11-22 | 1937-06-15 | Pittsburgh Res Corp | Adsorbent apparatus |
| GB1072528A (en) * | 1965-04-07 | 1967-06-21 | Dryvent Ltd | Improvements in or relating to air drying apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106653293A (en) * | 2016-12-07 | 2017-05-10 | 广东电网有限责任公司东莞供电局 | Double-oil level perspective oil cup device for main transformer respirator |
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| Publication number | Publication date |
|---|---|
| CN105097205B (en) | 2017-08-29 |
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Address after: 511400, No. 118 East Ring Road, Shiqiao Town, Guangzhou City, Guangdong, Panyu District Applicant after: Pearl Electric Limited by Share Ltd Address before: 511400, No. 118 East Ring Road, Shiqiao Town, Guangzhou City, Guangdong, Panyu District Applicant before: Pearl Electric Co., Ltd. |
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