CN202597814U - Decompression valve for oil-immersed transformer and oil-immersed transformer - Google Patents
Decompression valve for oil-immersed transformer and oil-immersed transformer Download PDFInfo
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- CN202597814U CN202597814U CN 201220189074 CN201220189074U CN202597814U CN 202597814 U CN202597814 U CN 202597814U CN 201220189074 CN201220189074 CN 201220189074 CN 201220189074 U CN201220189074 U CN 201220189074U CN 202597814 U CN202597814 U CN 202597814U
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- valve
- valve body
- decompression valves
- oil storage
- oil
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Abstract
The utility model provides a decompression valve, which comprises a valve body communicated with a transformer and a valve deck arranged on the valve body. The decompression valve is characterized in that a ventilation channel is arranged on the valve deck; a decompression port is formed in the side wall of the valve body, and communicated with an oil storage bottle through a return pipe; the oil storage bottle is communicated with the outside air through a ventilation window arranged on an oil storage cover; a valve plug is further arranged at a pipe orifice of the valve body; the upper end of the valve plug is limited by the pipe orifice of the valve body, while the lower end extends into the cavity of the valve body and keeps a clearance from the inside wall of the valve body; a sealing ring is arranged at the lower end of the valve plug; an elastic resetting mechanism is arranged between the valve plug and the valve deck; when the valve plug is located at a first limiting position, the sealing ring is located above the decompression port; and when the valve plug is located at a second limiting position, the sealing ring is located below the decompression port. The decompression valve is complete in decompression and high in sensitivity, can prevent waste of cooling oil, and facilitates adding the cooling oil.
Description
Technical field
The utility model relates to a kind of Decompression valves, relates in particular to a kind of Decompression valves that is used for oil-immersed power transformer; The utility model also relates to a kind of oil immersed transformer.
Background technique
Existing oil-immersed power transformer generally all comprises housing and the component for variable-pressure that places enclosure interior, and this component for variable-pressure mainly is made up of iron core and the coil winding that is wrapped on the iron core, and component for variable-pressure places in the transformer housing, and with lid it is sealed.
Generally be wound with a plurality of windings on the transformer iron core, transformer is in the process of work, and electric current is through coil, and the generation heat, if untimely to the coil cooling, can cause the overheated transformer work corrupted that causes of coil.For this reason, present transformer generally selects for use liquid cooling oil to cool, and specific practice is cold oil to be poured in the cavity that transformer housing and lid surrounded and with iron core and winding immerse in the cold oil.Because the specific heat ratio of oil is bigger, can be good at being the winding cooling, but also bring a problem thus; Because in the transformer working procedure; Lead and cooling long term can produce reaction unavoidably and discharge some gases, and the inner air pressure of transformer is raise; If this air pressure can not in time be discharged, bring serious potential safety hazard can for the proper functioning of transformer.
Existing transformer Decompression valves generally is made up of valve body, valve gap and valve pad; This valve pad is squeezed in the valve port place through valve gap; Valve gap is that non-tight is connected with the valve body mouth of pipe, and when the inner generation of transformer pressure, this pressure impacts valve pad and gushes from the gap between the valve gap and the valve body mouth of pipe.Though this structure can play certain pressure release effect, often need very big pressure just can back down valve pad, that is to say to have only when the transformer internal pressure reaches very high and could accomplish pressure release, and have the incomplete defective of pressure release.Moreover this pressure relief can only be used for pressure release, when pressure is uprushed in the transformer, causes usually that cold oil sprays in the transformer outward, and the cold oil of ejection can not obtain reclaiming, and causes the waste of oil.In addition, when cold oil in the transformer reduces, need take the valve gap and the valve pad of Decompression valves apart, add cold oil through valve body, because the valve body mouth of pipe is thinner, very inconvenience operates.
Summary of the invention
The technical problem that the utility model will solve provides the Decompression valves that a kind of pressure release thoroughly also can prevent the cold oil waste.
The utility model also provides a kind of pressure release thoroughly also can prevent the oil immersed transformer of cold oil waste.
In order to solve the problems of the technologies described above, the technological scheme that the utility model is taked is:
A kind of Decompression valves that is used for oil immersed transformer comprises the valve body that is communicated with transformer and is located at the valve gap on the valve body, it is characterized in that; Said valve gap is provided with scavenge duct, and said body wall is provided with pressure relief opening, and pressure relief opening is communicated with the oil storage bottle through reflow pipe; The oil storage bottle is communicated with ambient air through the louver(-vre) that is located on the oil storage cover, and said valve body mouth of pipe place also is provided with valve plug, and the upper end of valve plug is spacing by the valve body mouth of pipe; The lower end stretch in the valve body chamber and and the valve body madial wall between leave the gap, the valve plug lower end also is provided with seal ring, is provided with flexible restoring organ between valve plug and the valve gap; When said valve plug is in first limit position; Seal ring is positioned at the pressure relief opening top, and when valve plug was in second limit position, seal ring was in the below of pressure relief opening.
Said flexible restoring organ is a spring.In another embodiment, said flexible restoring organ is made up of two shell fragments, and said each shell fragment one end is fixed on the valve gap, and the other end slides on the position limit cycle of valve plug.Further, said position limit cycle is provided with two parallel guiding slip grooves, and an end of shell fragment is limited in the guiding slip groove.Further, remaining in the guiding slip groove in order to make shell fragment, said valve gap is provided with restraining groove, and the limited groove of position limit cycle is spacing, and along the restraining groove displacement.
The oil storage bottle of the utility model is fixed through supporting frame.
The said louver(-vre) of the utility model is the tubular structure that vertically is provided with, and the ventilation window is located on the sidewall of louver(-vre), and this structure can prevent that rainwater from getting in the oil storage bottle.
In one embodiment, said oil storage bottle is a funnel-like, and the maximum caliber of oil storage bottle is 5cm ~ 20cm.
In another embodiment, said reflow pipe is a metal tube.
The utility model also provides a kind of oil immersed transformer, comprises housing and lid, and the cavity that housing and lid surrounded is built-in with iron core, and this transformer also comprises above-mentioned Decompression valves, and the valve body of said Decompression valves is located on the lid and with transformer and is communicated with.
The utility model takes to have following beneficial effect:
The first, the utility model is provided with pressure relief opening and is provided with seal ring in the valve plug lower end on the sidewall of valve body, and very short displacement only need take place valve plug can accomplish pressure release, and sensitivity is higher, and pressure release is more thorough.
The second, when oil spout takes place, cold oil gets in the oil storage bottle through reflow pipe, treats that pressure is let out to flow back to transformer again after removing, and has avoided the waste that oil spout caused.
Three, the oil storage cover of when in transformer, adding cold oil, only need outwarding winding is added through the oil storage bottle, and said oil storage bottle is the choana structure, the operation of being more convenient for.
Four, the utility model is simple in structure, and is cheap for manufacturing cost, suitability for industrialized production.
Description of drawings
Fig. 1 is the overall structure figure of the utility model Decompression valves;
Fig. 2 is the structural representation under the Decompression valves sealing state;
Fig. 3 is the structural representation under the Decompression valves pressure release state;
Fig. 4 is the plan view of oil storage cover;
Fig. 5 is the structural representation under another embodiment of Decompression valves;
Fig. 6 is the structural representation of Fig. 5 embodiment lower limit circle.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is explained further details.
The described oil immersed transformer of the utility model comprises the housing (not shown) and is fastened on the lid on the housing; The cavity that housing and lid surrounded is in order to put iron core; Be full of the winding of different coil turns on the iron core, iron core and winding have been formed the core component of transformer jointly.For accelerating the transformer heat radiation, be equiped with liquid cooling oil in the said transformer cavity.
To shown in Figure 4, in order to let out the pressure that produces except that transformer, said transformer is provided with Decompression valves like Fig. 1; Decompression valves in the present embodiment comprises valve body 1 and valve plug 2, and valve body 1 is a tubular structure, is located on the transformer lid; And be communicated with transformer through lid, generally by the metallic material making, the sidewall of valve body 1 is provided with pressure relief opening 22 to valve body; Pressure relief opening 22 is communicated with oil storage bottle 5 through a reflow pipe 6, and oil storage bottle 5 keeps being communicated with ambient air.The mouth of pipe place of valve body 1 is provided with valve gap 3 and valve plug 2; Be connected with flexible restoring organ 4 between valve gap 3 and the valve plug 2; Valve gap 3 is tightened on the valve body 1, and valve gap 3 is provided with the scavenge duct (not shown), and scavenge duct is mainly in order to eliminate the pressure that valve plug 2 is produced when moving up.
Said valve plug 2 can be made by metallic material or rubber material; Its upper end is provided with position limit cycle 23; Position limit cycle 23 somewhat larger in diameter are in the caliber of valve body 1; The lower end of valve plug 2 then stretch in valve body 1 chamber and and the madial wall of valve body 1 between keep certain clearance, this gap length does not have particular determination, as long as can make gas and liquid cooling oil through.The lower end of valve plug is provided with seal ring 21, and sealing circle 21 roughly is trapezium structure, closely contacts with valve body 1 inwall; Seal ring 21 is made by silica gel or rubber material; Have certain deformation elasticity, make the gas in the valve body 1 can only pass through seal ring 21 from top to bottom, and can not pass through from bottom to up.
The axial length of valve plug 2 should satisfy following condition: promptly valve plug 2 can seal or open pressure relief opening 22 in its displacement stroke; Also be; Valve plug 2 has two limit positions in displacement stroke, when being in first limit position, the seal ring 21 of valve plug 1 lower end is positioned at the top of pressure relief opening 22; Valve body 1 passes through louver(-vre) 9 conductings with the external world, and is as shown in Figure 3; When valve plug 2 was in second limit position, seal ring 21 was positioned at the below of pressure relief opening 22, and the gas channel sealing between valve body 1 and the louver(-vre) 9 is as shown in Figure 2.
The flexible restoring organ 4 of the utility model can be selected spring for use, also can adopt shell fragment, like Fig. 5, shown in Figure 6; If select shell fragment for use then two shell fragments preferably be set; One end of each shell fragment is fixed on the valve gap 3, and the other end is level and smooth end, and can on position limit cycle 23, slide.Slide for the ease of shell fragment; Present embodiment also is provided with two parallel guiding slip grooves 24 on position limit cycle 23, the level and smooth end of shell fragment slides along guiding slip groove 24, further; In order to prevent that the level and smooth end of shell fragment from shifting out from guiding slip groove 24; Present embodiment is provided with restraining groove on the inwall of valve gap 3, the position limit cycle 23 of valve plug 2 is defined in the restraining groove, and moves up and down along restraining groove.
The utility model oil storage bottle 5 is a funnel-shaped structure, is made by metallic material, and its maximum caliber is 5cm ~ 20cm; Oil storage bottle 5 is fixed on the valve body 1 through supporting frame 8; Oil storage bottle 5 bottoms are provided with aperture, and are communicated with pressure relief opening 22 through reflow pipe 6, and the reflow pipe 6 here also is preferably metal tube.Oil storage bottle 5 is provided with oil storage cover 7; Oil storage cover 7 is provided with louver(-vre) 9, and this louver(-vre) 9 is a hollow tubular structure, and the sidewall of louver(-vre) 9 is provided with ventilation window 91; Oil storage bottle 7 communicates with the external world through ventilation window 91, and being provided with of this ventilation window 91 can prevent that rainwater from getting in the oil storage bottle 7.
The working principle of the utility model is following: under the original state, the valve plug 2 of said Decompression valves is in second limit position, at this moment, and valve body 1 and extraneous sealing.When the transformer inner member in the course of the work when discharging gas or other reasons and produce pressure, because pressure increases in the valve body 1; Valve plug 2 moves up along valve body 1 under pressure; When valve plug 2 moves to first limit position, valve body 1 and extraneous conducting, pressure is released in the valve body 1.Finish when pressure discharges, because the pressure in the valve body 1 reduces, valve plug 2 moves down under the effect of flexible restoring organ 4 until getting back to second limit position once more.
When the pressure in the transformer is instantaneous when increasing sharply, the cold oil in the transformer is from pressure relief opening 22 ejections, and gets in the oil storage bottles 5 along reflow pipe 6, treats that pressure discharges to finish, and the cold oils in the oil storage bottle 5 are back in the transformer once more, have prevented the waste of cold oil.
When the cold oil in the transformer reduces, can add the oil storage cover 7 of only need outwarding winding through oil storage bottle 5; Cold oil is added in the oil storage bottle 5; Cold oil gets into the gap between valve plugs 2 and the valve body 1 through reflow pipe 6, owing to fuel head apparently higher than pressure relief opening 22, the cold oil at seal ring 21 places applies downward pressure to seal ring 21; Make seal ring 21 that miniature deformation take place, cold oil is through in the gap inflow transformer between seal ring 21 and the valve body 1.
Below only be some specific embodiments of the utility model, but the utility model is not limited thereto, all change at the unsubstantiality of making on the utility model basis all will fall within the protection domain of the utility model.
Claims (10)
1. a Decompression valves that is used for oil immersed transformer comprises the valve body (1) that is communicated with transformer and is located at the valve gap (3) on the valve body (1), it is characterized in that; Said valve gap (3) is provided with scavenge duct, and said valve body (1) sidewall is provided with pressure relief opening (22), and pressure relief opening (22) is communicated with oil storage bottle (5) through reflow pipe (6); Oil storage bottle (5) is communicated with ambient air through the louver(-vre) (9) that is located on the oil storage cover (7); Said valve body (1) mouth of pipe place also is provided with valve plug (2), and the upper end of valve plug (2) is spacing by valve body (1) mouth of pipe, the lower end stretch in valve body (1) chamber and and valve body (1) madial wall between leave the gap; Valve plug (2) lower end also is provided with seal ring (21); Be provided with flexible restoring organ (4) between valve plug (2) and the valve gap (3), when said valve plug (2) was in first limit position, seal ring (21) was positioned at pressure relief opening (22) top; When valve plug (2) was in second limit position, seal ring (21) was in the below of pressure relief opening (22).
2. Decompression valves according to claim 1 is characterized in that, said flexible restoring organ (4) is a spring.
3. Decompression valves according to claim 1 is characterized in that, said flexible restoring organ (4) is made up of two shell fragments, and said each shell fragment one end is fixed on the valve gap (3), and the other end slides on the position limit cycle (23) of valve plug (2).
4. Decompression valves according to claim 3 is characterized in that, said position limit cycle (23) is provided with two parallel guiding slip grooves (24), and an end of shell fragment is limited in the guiding slip groove (24).
5. Decompression valves according to claim 4 is characterized in that said valve gap is provided with restraining groove, and the limited groove of position limit cycle (23) is spacing, and along the restraining groove displacement.
6. Decompression valves according to claim 1 is characterized in that, said oil storage bottle (5) is fixing through supporting frame (8).
7. Decompression valves according to claim 6 is characterized in that, said louver(-vre) (9) is the tubular structure that vertically is provided with, and ventilation window (91) is located on the sidewall of louver(-vre) (9).
8. Decompression valves according to claim 7 is characterized in that, said oil storage bottle (5) is a funnel-like, and the maximum caliber of oil storage bottle (5) is 5cm ~ 20cm.
9. Decompression valves according to claim 1 is characterized in that, said reflow pipe (6) is a metal tube.
10. oil immersed transformer; Comprise housing and lid, the cavity that housing and lid surrounded is built-in with iron core, it is characterized in that; Said transformer comprises the arbitrary described Decompression valves of claim 1 to 9, and the valve body of said Decompression valves is located on the lid and with transformer and is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220189074 CN202597814U (en) | 2012-04-28 | 2012-04-28 | Decompression valve for oil-immersed transformer and oil-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220189074 CN202597814U (en) | 2012-04-28 | 2012-04-28 | Decompression valve for oil-immersed transformer and oil-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202597814U true CN202597814U (en) | 2012-12-12 |
Family
ID=47315353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220189074 Withdrawn - After Issue CN202597814U (en) | 2012-04-28 | 2012-04-28 | Decompression valve for oil-immersed transformer and oil-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202597814U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705548A (en) * | 2012-04-28 | 2012-10-03 | 广东卓立变压器有限公司 | Pressure relief valve for oil-immersed transformer and oil-immersed transformer |
| CN111643988A (en) * | 2020-06-18 | 2020-09-11 | 南京千里行测控技术有限公司 | Horizontal dust remover |
-
2012
- 2012-04-28 CN CN 201220189074 patent/CN202597814U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102705548A (en) * | 2012-04-28 | 2012-10-03 | 广东卓立变压器有限公司 | Pressure relief valve for oil-immersed transformer and oil-immersed transformer |
| CN102705548B (en) * | 2012-04-28 | 2014-01-01 | 广东卓立变压器有限公司 | Pressure relief valve for oil-immersed transformer and oil-immersed transformer |
| CN111643988A (en) * | 2020-06-18 | 2020-09-11 | 南京千里行测控技术有限公司 | Horizontal dust remover |
| CN111643988B (en) * | 2020-06-18 | 2022-06-10 | 南京千里行测控技术有限公司 | Horizontal dust remover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20140101 |
|
| RGAV | Abandon patent right to avoid regrant |