CN105788821A - Breather for transformer - Google Patents
Breather for transformer Download PDFInfo
- Publication number
- CN105788821A CN105788821A CN201610362287.1A CN201610362287A CN105788821A CN 105788821 A CN105788821 A CN 105788821A CN 201610362287 A CN201610362287 A CN 201610362287A CN 105788821 A CN105788821 A CN 105788821A
- Authority
- CN
- China
- Prior art keywords
- plunger
- face
- relief hole
- hole
- snap ring
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformer Cooling (AREA)
Abstract
The invention discloses a breather for a transformer.The breather comprises an upper seal head part used for being communicated with an oil conservator, a pressure relief hole penetrating through the top face and the bottom face is formed in the upper seal head part, a plunger is connected to the inner side face of the pressure relief hole in a sliding and matched mode, an overburden pressure part is arranged on the top of the plunger, a limiting part is arranged at the bottom of the plunger, the top face of the pressure relief hole abuts against the bottom face of the overburden pressure part, the maximum length of the limiting part is larger than the diameter of the pressure relief hole, a gap is formed between the bottom of the plunger and the bottom face of the pressure relief hole, and the bottom face of the plunger is provided with a channel used for exhausting gas in the oil conservator.By means of the breather for the transformer, the situations that due to the fact that the breather for the transformer is used for a long time, blocking can occur to cause bursting of an explosion-proof membrane and even cause serious damage of the transformer are effectively avoided.
Description
Technical field
The disclosure relates generally to transformer technology field, is specifically related to oil-filled transformer, particularly relates to respirator for transformer.
Background technology
Transformer breather full name transformator protection against the tide respiratory organ, it is also called dessicator, being mainly used to make transformer body communicate with the external world keeps inner and outer air pressure equal, it is prevented that when hot weather or oepration at full load, because of the change of intensification volume greatly, internal pressure raises to discharge and causes transformator oil spout transformer oil.Transformer breather generally comprises pore, catchment cup and pore etc. between bell glass, upper low head part, glass infuser, cup, is provided with the desiccant such as silica gel particle, is provided with transformer oil in catchment cup in bell glass.Its operation principle is: owing to expanding with heat and contract with cold, temperature of oil in transformer in conservator can change, when transformer oil heats up, the volume of oil increases, air in installation for transformer is compressed, pressure increases, and in order to maintain the pressure balance in transformator, the partial air in conservator will enter air by transformer breather；When transformer oil is lowered the temperature, the volume of oil reduces, installation for transformer air is by dilatation, pressure reduces, in order to maintain the pressure balance in transformator, pressure in conservator will suck air by respiratory organ, here by the moisture impurity that the desiccant that respiratory organ is built-in is absorbed in transformator in air, insulating oil in transformator is made to keep good electric property, humid air is prevented to be directly entered in installation for transformer, make transformer oil make moist, reduce or destroy the dielectric strength of transformator, so that winding.
But owing to transformator is mostly installed at outdoor, especially the place that environment is poor, adds the impurity such as dust in air in recent years and gets more and more so that transformer breather there will be the situation that jam blocks when life-time service, and then cause that rupture pressure disc bursts, even result in transformator badly damaged.
Summary of the invention
In view of drawbacks described above of the prior art or deficiency, it is desirable to provide the respirator for transformer of gas in a kind of safe release installation for transformer.
The present invention provides a kind of respirator for transformer, including the upper cover portion for connecting with conservator, upper cover portion is provided with through the relief hole of end face and bottom surface, relief hole medial surface is slidably connected with plunger, the top of plunger is provided with covers casting die, the bottom of plunger is provided with locating part, the end face apical grafting of relief hole is in the bottom surface covering casting die, the greatest length of locating part is more than the diameter of relief hole, it is provided with gap between bottom and the bottom surface of relief hole of plunger, the bottom surface of plunger is additionally provided with for discharging the passage of gas in conservator.
Respirator for transformer provided by the invention, by being provided with through the relief hole of end face and bottom surface in upper cover portion, the plunger being closely slidably connected it is provided with in relief hole, the top of plunger is provided with covers casting die, plunger is utilized to have certain weight, make the gas in the conservator under normal use will not back down plunger, the situation that conservator connects with outside air occurs；The bottom of plunger is provided with locating part, when can occur blocking in respiratory organ, in conservator, air pressure increases, gas backs down plunger, it is achieved pressure release, again with the weight of plunger after pressure release completes, make conservator and outside air isolation, efficiently avoid and block owing to transformer breather there will be jam when life-time service, and then cause that rupture pressure disc bursts, even result in the appearance of the situations such as transformator is badly damaged.
Accompanying drawing explanation
By reading the detailed description that non-limiting example is made made with reference to the following drawings, other features, purpose and advantage will become more apparent upon:
The view in full section in the upper cover portion that Fig. 1 embodiment of the present invention provides.
Detailed description of the invention
Below in conjunction with drawings and Examples, the application is described in further detail.It is understood that specific embodiment described herein is used only for explaining related invention, but not the restriction to this invention.It also should be noted that, for the ease of describing, accompanying drawing illustrate only and invent relevant part.
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the application below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
The view in full section in the upper cover portion that Fig. 1 embodiment of the present invention provides, refer to Fig. 1, the present embodiment provides a kind of respirator for transformer, including the upper cover portion for connecting with conservator, upper cover portion is provided with through the relief hole 1 of end face and bottom surface, relief hole 1 medial surface is slidably connected with plunger 2, the top of plunger 2 is provided with covers casting die 21, the bottom of plunger 2 is provided with locating part 22, the end face apical grafting of relief hole 1 is in the bottom surface covering casting die 21, the greatest length of locating part 22 is more than the diameter of relief hole 1, it is provided with gap 3 between bottom and the bottom surface of relief hole 1 of plunger 2, the bottom surface of plunger 2 is additionally provided with the passage 4 for discharging gas in conservator.
In the present embodiment, by being provided with through the relief hole 1 of end face and bottom surface in upper cover portion, the plunger 2 being closely slidably connected it is provided with in relief hole 1, the top of plunger 2 is provided with covers casting die 21, plunger 2 is utilized to have certain weight, make the gas in the conservator under normal use will not back down plunger 2, the situation that conservator connects with outside air occurs；The bottom of plunger 2 is provided with locating part 22, when can occur blocking in respiratory organ, in conservator, air pressure increases, gas backs down plunger 2, it is achieved pressure release, again with the weight of plunger 2 after pressure release completes, make conservator and outside air isolation, efficiently avoid and block owing to transformer breather there will be jam when life-time service, and then cause that rupture pressure disc bursts, even result in the appearance of the situations such as transformator is badly damaged.
Preferably, the bottom surface covering casting die 21 is provided with the first snap ring 211, and the internal diameter of the first snap ring 211 is more than the diameter of the end face of relief hole 1；The end face of upper cover part is provided with the second snap ring 5, and the end face of relief hole 1 is positioned at the second snap ring 5, bonded to each other between sidewall and the sidewall of the second snap ring 5 of the first snap ring 211.
In the present embodiment, cover casting die 21 for covering the end face of relief hole 1, namely cover the area top surface area more than relief hole 1 of casting die 21 bottom surface.The bottom surface covering casting die 21 is provided with the first snap ring 211, the end face of upper cover part is provided with the second snap ring 5, mutually fit tightly between sidewall and the sidewall of the second snap ring 5 of the first snap ring 211, can prevent the flying dust in the external world from entering in relief hole 1, simultaneously can also to the effect covering casting die 21 and playing location.Further, covering casting die 21 for cylindrical top board, the first snap ring 211 is one-body molded with top board.Wherein, the diameter of top board is more than the diameter of relief hole 1.And first snap ring 211 one-body molded with top board, not only eliminate connector between the two, decrease joint between the two, also add integrally-built stability simultaneously.
Preferably, the medial surface of the first snap ring 211 fits in the lateral surface of the second snap ring 5, the axis of the first snap ring 211 and the dead in line of plunger 2.
In the present embodiment, the internal diameter of the first snap ring 211 is more than the external diameter of the second snap ring 5, the medial surface of the first snap ring 211 fits in the lateral surface of the second snap ring 5, extraneous flying dust can be avoided to enter relief hole 1, plunger 2 can be avoided simultaneously to cover laying dust on casting die 21 when mobile and be lost in relief hole 1.The axis of the first snap ring 211 and the dead in line of plunger 2, the axis of the second snap ring 5 and the dead in line of plunger 2, post upper cover portion uniform force can be ensured, making under normal circumstances, covering the gravity of casting die 21, plunger 2 and locating part 22 three, to make to cover sealing property between casting die 21 and upper cover portion better.
Preferably, locating part 22 includes cylindrical base plate, and the diameter of base plate is more than the diameter of relief hole 1.
In the present embodiment, locating part 22 is the diameter cylindrical base plate more than the diameter of relief hole 1, and owing to cylindrical base plate is when covering the bottom surface of relief hole 1, area is minimum, saves material, reduces cost.
Preferably, passage 4 includes blind hole 41 and the through hole 42 of the lateral surface of the medial surface of through blind hole 41 and plunger 2, and through hole 42 arrives the distance length less than gap 3 of the end face of relief hole 1.
In the present embodiment, passage 4 includes blind hole 41, the end face of blind hole 41 and the bottom being positioned at plunger 2, and connects with conservator.Through hole 42 for being drawn out to the side of plunger 2 by the gas in blind hole 41, and through hole 42 arrives the distance length less than gap 3 of the end face of relief hole 1, it is achieved drawn from the side of plunger 2 by gas.
Preferably, passage 4 includes the through hole 42 of more than 2, and through hole 42 is around the dead in line of plunger 2, the axis of blind hole 41 and plunger 2, and the end face of blind hole 41 is positioned at the bottom surface of locating part 22.
In the present embodiment, passage 4 includes the through hole 42 of more than 2, through hole 42 is around plunger 2, further for being evenly distributed on the surrounding of plunger 2, in addition the dead in line of the axis of blind hole 41 and plunger 2, the end face of blind hole 41 is positioned at the bottom surface of locating part 22, is not only convenient for production and processing, it is additionally favorable for the dispersed of gas, it is achieved the effect of release air pressure is best.
Preferably, the end face in upper cover portion is provided with the first groove 6, and the bottom surface in upper cover portion is provided with the second groove 7, and plunger 2 is positioned at the middle part of the first groove 6, and plunger 2 is positioned at the middle part of the second groove 7, and the space in the second groove 7 is used for placing locating part 22.
In the present embodiment, the end face in upper cover portion is provided with the first groove 6, plunger 2 is positioned at the middle part of the first groove 6, the bottom surface in upper cover portion is provided with the second groove 7, plunger 2 is positioned at the middle part of the second groove 7, and wherein the first groove 6 is easy to through hole 42 and is in communication with the outside, and is beneficial to distributing of gas, second groove 7, for improving the length in gap 3 between locating part 22 and bottom surface, upper cover portion in the length situation not increasing plunger 2, improves the effect of pressure release.
Preferably, the first groove 6 and the second groove 7 are all toroidal cavity.
In the present embodiment, the first groove 6 and the second groove 7 are all toroidal cavity, it is simple to when plunger 2 rises, through hole 42 and extraneous connection, simultaneously also with cylindrical locating part 22 with the use of.
Preferably, it is positioned at the bottom surface of the first groove 6 apart from minimum through hole 42 with the end face of plunger 2.
In the present embodiment, in order to when realizing preventing from having in the normal use procedure of transformator less air pressure fluctuation, gas is backed down by through hole 42 and to cover casting die 21, the bottom surface of the first groove 6 will be positioned at apart from minimum through hole 42 with the end face of plunger 2, the through hole 42 of the lateral surface being namely positioned at plunger 2 all contacts with relief hole 1 medial surface, improve respiratory organ work accuracy.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Skilled artisan would appreciate that, invention scope involved in the application, it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, when also should be encompassed in without departing from described inventive concept simultaneously, other technical scheme being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed.Such as features described above and (but not limited to) disclosed herein have the technical characteristic of similar functions and replace mutually and the technical scheme that formed.
Claims (10)
1. a respirator for transformer, including the upper cover portion for connecting with conservator, it is characterized in that, described upper cover portion is provided with through the relief hole of end face and bottom surface, described relief hole medial surface is slidably connected with plunger, the top of described plunger is provided with covers casting die, the bottom of described plunger is provided with locating part, the end face apical grafting of described relief hole is in the described bottom surface covering casting die, the greatest length of described locating part is more than the diameter of described relief hole, it is provided with gap between bottom and the bottom surface of described relief hole of described plunger, the bottom surface of described plunger is additionally provided with for discharging the passage of gas in conservator.
2. respirator for transformer according to claim 1, it is characterised in that described in cover the bottom surface of casting die and be provided with the first snap ring, the internal diameter of described first snap ring is more than the diameter of the end face of described relief hole；The end face of described upper cover part is provided with the second snap ring, and the end face of described relief hole is positioned at described second snap ring, bonded to each other between sidewall and the sidewall of the second snap ring of described first snap ring.
3. respirator for transformer according to claim 2, it is characterised in that the medial surface of described first snap ring fits in the lateral surface of described second snap ring, the axis of described first snap ring and the dead in line of described plunger.
4. respirator for transformer according to claim 3, it is characterised in that described in cover casting die for cylindrical top board, described first snap ring is one-body molded with described top board.
5. respirator for transformer according to claim 1, it is characterised in that described locating part includes cylindrical base plate, and the diameter of described base plate is more than the diameter of described relief hole.
6. the respirator for transformer according to claim 1-5 any one, it is characterized in that, described passage includes blind hole, and the through hole of the medial surface of through described blind hole and the lateral surface of described plunger, described through hole to the distance of the end face of described relief hole less than the length in described gap.
7. respirator for transformer according to claim 6, it is characterized in that, described passage includes the described through hole of more than 2, and described through hole surrounds described plunger, the dead in line of the axis of described blind hole and described plunger, the end face of described blind hole is positioned at the bottom surface of described locating part.
8. respirator for transformer according to claim 7, it is characterized in that, the end face in described upper cover portion is provided with the first groove, the bottom surface in described upper cover portion is provided with the second groove, described plunger is positioned at the middle part of described first groove, described plunger is positioned at the middle part of described second groove, and the space in described second groove is used for placing described locating part.
9. respirator for transformer according to claim 8, it is characterised in that described first groove and described second groove are all toroidal cavity.
10. respirator for transformer according to claim 9, it is characterised in that with the bottom surface that the end face of described plunger is positioned at described first groove apart from minimum described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362287.1A CN105788821B (en) | 2016-05-26 | 2016-05-26 | Respirator for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610362287.1A CN105788821B (en) | 2016-05-26 | 2016-05-26 | Respirator for transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105788821A true CN105788821A (en) | 2016-07-20 |
| CN105788821B CN105788821B (en) | 2017-12-26 |
Family
ID=56375285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610362287.1A Active CN105788821B (en) | 2016-05-26 | 2016-05-26 | Respirator for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105788821B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109712781A (en) * | 2019-01-30 | 2019-05-03 | 肇庆胜尚知识产权服务有限公司 | A kind of electric power electric transformer for Commercial Complex |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0378216A (en) * | 1989-08-21 | 1991-04-03 | Daihen Corp | Oil-filled transformer |
| CN201549319U (en) * | 2009-11-16 | 2010-08-11 | 吴青 | Pressure release respirator of oil-charging type electrical device |
| CN202531983U (en) * | 2012-01-12 | 2012-11-14 | 铜陵国方水暖科技有限责任公司 | Exhaust valve with plug |
| CN202992296U (en) * | 2012-12-17 | 2013-06-12 | 湖南省电力公司超高压管理局 | Pressure relief valve for distribution transformer |
-
2016
- 2016-05-26 CN CN201610362287.1A patent/CN105788821B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0378216A (en) * | 1989-08-21 | 1991-04-03 | Daihen Corp | Oil-filled transformer |
| CN201549319U (en) * | 2009-11-16 | 2010-08-11 | 吴青 | Pressure release respirator of oil-charging type electrical device |
| CN202531983U (en) * | 2012-01-12 | 2012-11-14 | 铜陵国方水暖科技有限责任公司 | Exhaust valve with plug |
| CN202992296U (en) * | 2012-12-17 | 2013-06-12 | 湖南省电力公司超高压管理局 | Pressure relief valve for distribution transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109712781A (en) * | 2019-01-30 | 2019-05-03 | 肇庆胜尚知识产权服务有限公司 | A kind of electric power electric transformer for Commercial Complex |
| CN109712781B (en) * | 2019-01-30 | 2020-05-12 | 佛山市仁能电力工程设备有限公司 | Power electrical transformer for commercial complex |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105788821B (en) | 2017-12-26 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Respirator for transformer Effective date of registration: 20210511 Granted publication date: 20171226 Pledgee: Bank of China Limited by Share Ltd. Haian branch Pledgor: JIANGSU TIANWEI TRANSFORMER Co.,Ltd. Registration number: Y2021980003481 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |