CN2122421U - Pressure bag metal dilator - Google Patents
Pressure bag metal dilator Download PDFInfo
- Publication number
- CN2122421U CN2122421U CN 92205849 CN92205849U CN2122421U CN 2122421 U CN2122421 U CN 2122421U CN 92205849 CN92205849 CN 92205849 CN 92205849 U CN92205849 U CN 92205849U CN 2122421 U CN2122421 U CN 2122421U
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- CN
- China
- Prior art keywords
- pressure
- guide rod
- storage box
- capsule
- oil
- 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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- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model relates to a pressure pocket type metal expander which is an energy storage device mainly used for an oil immersion type transformer. The utility model is mainly composed of an oil storage box (3), a pressure pocket (4), a release valve (2), an oil temperature displaying and driving scroll cover (9), a vacuum zerk (6), etc., wherein, the oil storage box (3) is arranged above a transition plate (16), the pressure pocket (4) is arranged on a suspension base (10) at the upper part of the oil storage box (3), a simultaneous backing sheet (5) whose center is provided with a guide bar (8) is arranged in the pressure pocket (4), the upper part of the guide bar (8) is matched with the scroll cover (9) on which a pointer (13) is arranged, the lower end of the guide bar (8) is provided with a pressure head (11), the bottom of the pressure pocket (4) is provided with the release valve (2), the left side above the oil storage box (3) is provided with the vacuum zerk (6), the right side of the oil storage box (3) is provided with a temperature scale disk (12), and an observation window (14) is arranged at the right side of an outer cover (15).
Description
The utility model is to be mainly used in the device of oil immersed type instrument transformer as the insulating oil protection, a kind of pressure bag type metal expander.
Instrument transformer during the work operation, because of factors such as the loss of internal electric energy and ambient temperature variation constantly change the insulating oil temperature of instrument transformer inside, thereby cause the volume of insulating oil to change, and inner insulating oil is to prevent to make moist, agingly then can not contact with the air in the external world, therefore must there be one can satisfy oily gentle change in volume needs and make the oil-tightening device of insulation in the instrument transformer, makes the instrument transformer can normal and stable operation.At present the energy storage device that changes of the compensation oil volume that adopted of oil immersed type instrument transformer mainly contains corrugated, boxlike and series etc.Corrugated expander easily produces deflection, waves after inner chamber is oil-filled, deform and cause because of generating collision in transportation and break, and do not have overpressure relief device; Boxlike expander structure complexity.Technology difficulty is big, and it is insensitive that pressure transmits, and is unfavorable for buffering and decompression, and its overpressure relief device belongs to the formula that smashes, and fragment falls into and is difficult in the instrument transformer taking out; The series structure is also still complicated, and the repairing mouth is positioned on the bottom, during to the expander repairing, be unfavorable for the discharge of gas.More than three kinds all belong to the inner oil type structure be unfavorable for making the back and install before the inspections of cleannes.Through consulting relevant documents and materials, do not find record as yet with the same or similar structure of the utility model.
The purpose of this utility model is in order to overcome the existing shortcoming of conventional expanded device, thereby has designed a kind of pressure bag type metal expander.
Particular content of the present utility model is:
The pressure bag type metal expander mainly is made up of oil storage box (3), pressure capsule (4), relief valve (2) and oil temperature demonstration transmission position helical casing (9) and vacuum repairing mouth (6) etc.Oil storage box (3) is positioned on the top of the rebound (16) that connects with instrument transformer insulator (or oil conservator), pressure bag type (4) is installed on the hangoff receptacle (10) on oil storage box (3) top, press capsule to form by undulatory dish-shaped thin slice, this thin slice is formed by the stainless sheet steel compacting, in pressing capsule (4), be equipped with synchronous support chip (5), be equipped with guide rod (8) in synchronous support chip center, guide rod (8) lower end is contained in pressure head (11), and between guide rod (8) and pressure head (11), be equipped with and adjust nut (7), have helicla flute and helical casing (9) in the top of guide rod (8) and form a spiral width of cloth, temperature scale dish (12) and observation window (14) on being equipped with temperature pointer (13) on the helical casing (9) and being positioned on oil storage box (3) are corresponding, observation window (14) is to make with transparent polymethyl methacrylate sheet to be installed in outer cover (15) right side, outer cover is installed in rebound (16) top, be equipped with overtemperature (being superpressure) relief valve (2) in the bottom of pressing capsule (4), superpressure relief valve (2) overcomes self gravitation by spring (1) makes valve body and the opening part closure of pressing capsule (4) lower end, all has aperture on hangoff receptacle (10) and synchronous support chip (5).
The utility model has the advantages that simple in structure, enforcement makes things convenient for, superpressure release does not need too high pressure, as long as surpassing permissible value, temperature can realize that pressure release is not only safe but also reliable, run time behaviour is stable, belonging to outer oil type helps making the back and preceding cleannes inspection is installed, can prevent effectively that the interior kish of expander or other non-metal foreign body from falling into instrument transformer inside, influence product quality, in the time of also can preventing the warm too high superpressure of oil and the generation that causes an explosion accident.As belong to misoperation or have the non-destructive accident to take place, then overpressure relief device can make the insulating oil outflow, but instrument transformer still can work on after to the expander repairing.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is that superpressure discharges principle schematic.
Introduce most preferred embodiment of the present utility model with reference to the accompanying drawings in detail:
The pressure bag type metal expander is when implementing, on rebound (16), be provided with can with the joining bolt of instrument transformer insulator (or oil conservator), be equipped with dismountable cover cap up, so that install and adjust other parts, the observation window of outer cover (15) can conveniently be looked up because of an inclination angle is arranged, and avoids the installation position too high and produce subtense angle.All adopt the oil-resistant rubber insert sealing at point of attachment (except that outer cover), pressure relief valve sealing place also is to be made by oil resistant rubber, presses capsule to be made by the Thin Stainless Steel panel material, and other is all made with ordinary metallic material.When the pressure bag type metal expander uses, with after rebound (16) and suitable for reading connection of instrument transformer insulator (or oil conservator), by mend vacuum oil valve nozzle (6) make oil storage box (2) inner with press cavity between the capsule (4) to vacuumize after be full of oil, make itself and instrument transformer inside formation one airtight integral body.When oily temperature rise generation volumetric expansion, then produce certain interior pressure, promote to press capsule (4) compression under pressure, oil storage box (3) cavity volume is increased, with the oil of reservoir volume dilation, at this moment, along with the compression of pressing capsule (4), synchronous support chip (5) is risen thereupon, and drive guide rod (8) move up.Because of guide rod (8) can only axially move, therefore helical casing (9) rotates because of the helicla flute effect of guide rod (8), and the oily this moment temperature of drive pointer (13) swing indication, when oil temperature is too high when reaching permissible value, after promptly pressing capsule (4) to be compressed to certain position, pressure head after being adjusted (11) contacts with relief valve (2), and hinder relief valve (2) and continue to rise, when oily temperature still continues to rise, after surpassing permissible value, because of interior pressure effect will continue to promote to press capsule (4) compression promptly to continue to rise in the bottom, relief valve this moment (2) is opened, and reaches to open the purpose that discharges, and insulating oil flowed into and pressed in the capsule (4) this moment, after insulating oil flows out, the instrument transformer internal pressure descends, and then by the effect of spring (1) with along with the bottom of stretching out of pressing capsule descends, makes relief valve (2) closure, again form air-tight state, prevent superpressure blast and make instrument transformer can continue operate as normal.Otherwise when normal operation, the oil temperature descends, and internal drop is low, presses capsule (4) to stretch out, and promotes oil and flows back to instrument transformer inside to guarantee being in barotropic state all the time in the instrument transformer.
Claims (4)
1, the pressure bag type metal expander mainly is by oil storage box (3), press capsule (4), pressure relief valve (2) and oil temperature show the helical casing compositions such as (9) of transmission, it is characterized in that, oil storage box (3) is installed in rebound (16) top, the top of oil storage box (3) is equipped with hangoff receptacle (10), be equipped with pressure capsule (4) at the middle part, below of hangoff receptacle (10) and be the reversal of the natural order of things shape, be equipped with vacuum repairing mouth (6) on the upper left side of hangoff receptacle (10), the right side is equipped with temperature scale dish (12), in pressing capsule (4), be equipped with synchronous support chip (5), be equipped with guide rod (8) in synchronous support chip (5) center, guide rod (8) lower end is equipped with pressure head (11), connect with helical casing (9) by hangoff receptacle (10) back on guide rod top, pointer (13) is housed on the helical casing (9), is equipped with pressure relief valve (2), observation window (14) is housed on the outer cover right side in the bottom of pressing capsule.
2, pressure bag type metal expander as claimed in claim 1 is characterized in that said pressure relief valve (2) is frustum, is pressing the capsule bottom to have bellmouth, and frustum is connected in by spring (1) and presses on the capsule chassis, and cooperates with taper hole.
3, pressure bag type metal expander as claimed in claim 1 is characterized in that said guide rod (8) top and helical casing (9) matching part have helicla flute, and guide rod (8) bottom is provided with screw thread and matches with adjustment nut (7).
4, pressure bag type metal expander as claimed in claim 1 is characterized in that the said pressure head (11) and the matching part of guide rod (8) are provided with screw thread, is provided with between pressure head (11) and guide rod to adjust nut (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92205849 CN2122421U (en) | 1992-04-01 | 1992-04-01 | Pressure bag metal dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92205849 CN2122421U (en) | 1992-04-01 | 1992-04-01 | Pressure bag metal dilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2122421U true CN2122421U (en) | 1992-11-18 |
Family
ID=4951926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92205849 Granted CN2122421U (en) | 1992-04-01 | 1992-04-01 | Pressure bag metal dilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2122421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758036A (en) * | 2018-07-18 | 2018-11-06 | 天威保变(合肥)变压器有限公司 | A kind of outer oil type bellow oil conservator equilibrated valve |
-
1992
- 1992-04-01 CN CN 92205849 patent/CN2122421U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758036A (en) * | 2018-07-18 | 2018-11-06 | 天威保变(合肥)变压器有限公司 | A kind of outer oil type bellow oil conservator equilibrated valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |