CN201044198Y - Oil immersion type mutual-inductor with pressure relief device - Google Patents
Oil immersion type mutual-inductor with pressure relief device Download PDFInfo
- Publication number
- CN201044198Y CN201044198Y CNU2007200399040U CN200720039904U CN201044198Y CN 201044198 Y CN201044198 Y CN 201044198Y CN U2007200399040 U CNU2007200399040 U CN U2007200399040U CN 200720039904 U CN200720039904 U CN 200720039904U CN 201044198 Y CN201044198 Y CN 201044198Y
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- Prior art keywords
- relief device
- pressure relief
- back shaft
- pressure
- instrument transformer
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Abstract
The utility model relates to an oil immersed transformer with a pressure relief device, which comprises a pressure relief device arranged on a box body. The pressure relief device comprises a fixed seat, a mandrill mechanism and a pressure cover which are arranged coaxially, the upper and lower ends of the fixed seat are provided with openings, the lower end surface of the fixed seat is in fixed connection with the upper end surface of the box body, the pressure cover is movably arranged at the upper end of the fixed seat, the inner end surface of the pressure cover is closely against the upper end surface of the fixed seat, the mandrill mechanism can be arranged in an inner cavity of the fixed seat in the axial direction and in a gliding way, the upper end surface of the mandrill mechanism sticks to the inner end surface of the pressure cover closely, the axial slipping of the mandrill mechanism is in linkage with the opening/closing of the pressure. When the oil immersed transformer is put into operation, the temperature arises, which causes the transformer oil in the box body to expand and the internal air pressure to increase, when a pressure release device is utilized to realize the release of the pressure inside the box body so as to balance the pressure inside the box body, thereby protecting other parts of the oil immersed transformer.
Description
Technical field
The utility model relates to a kind of instrument transformer, relates in particular to a kind of oil immersed type instrument transformer with pressure relief device.
Background technology
At present, widely used outdoor oil immersed type instrument transformer is mainly used in a kind of metering device of distribution transformer high side voltage and current measurement and electric energy metrical.As shown in Figure 1, 2, the casing of existing oil immersed type instrument transformer is made with metal, and instrument transformer is contained in the case, and fills with transformer oil as insulation in casing.The wiring of instrument transformer is connected in the insulator bottom with the wiring of insulator, and casing side root a tree name user needs to adorn instrument box.A small amount of gas and the heating in service of instrument transformer winding because instrument transformer transformer oil ageing in running will be overflowed, heat conducts to transformer oil, the transformer oil temperature is raise, volumetric expansion, it is big that box house air pressure becomes, and casing does not originally have pressure relief device on one's body, and when air pressure inside acquired a certain degree, transformer oil will be from the seam crossing spill and leakage.When instrument transformer inside was short-circuited fault, the transformer oil temperature rose rapidly, and box house pressure can't discharge, and fuel tank will be out of shape or split.
Summary of the invention
The purpose of this utility model is at the deficiencies in the prior art, and a kind of oil immersed type instrument transformer with pressure relief device is provided, and makes the gas in the casing can have the place to overflow, and reduces the air pressure inside of casing, has protected other components and parts.
For achieving the above object, the utility model adopts a kind of oil immersed type instrument transformer with pressure relief device, comprise casing, instrument transformer, insulator, fill with transformer oil in the casing, the oil immersed type instrument transformer also comprises the pressure relief device that is arranged on the casing, pressure relief device comprises the holder of coaxial setting, post rod mechanism, pressure cover, on the holder, following two ends have opening, fixedly connected with the upper surface of casing in the lower surface of holder, pressure cover is movably arranged on the upper end of holder, the inner face of pressure cover abuts against on the upper surface of holder, but be arranged in the inner chamber of holder the post rod mechanism axial slip, the inner face close neighbour of the upper surface of post rod mechanism and pressure cover, the axial slip of post rod mechanism and pressure cover open/close into interlock.
The utility model further be set to post rod mechanism comprise back shaft, compression spring, active force sheet, by moving plate, the stiff end of back shaft passes the center of pressure cover, be fixed on the upper surface of pressure cover, from top to bottom arranged successively vertically by moving plate, compression spring, three parts of active force sheet, by the inner face close neighbour of the upper surface of moving plate and pressure cover, compression spring is in by between moving plate and the active force sheet, and the maintenance free state, the lower end of active force sheet and the free end of back shaft flexibly connect.
The utility model further is set to holder and is made of oiling seat and middle base, and the oiling seat is fixed on the upper surface of casing, and the middle base lower end is threaded with holder, and between is provided with sealing ring.
The free end that the utility model further is set to back shaft is provided with screw thread, and adjusting nut is arranged on the lower end of active force sheet, and adjusting nut can be along the upper and lower rotation of back shaft, and active force sheet and adjusting nut constitute interlock.
The utility model further be set to also be provided with on the pressure relief device "
" fixed mount of type, the both sides of fixed mount are movably connected on the outside of middle base, and the stiff end of the corresponding back shaft in the centre position of fixed mount is provided with the anti-part that rises, and the upper surface of the stiff end of back shaft is close in the lower surface of preventing rising part.
The upper end face part that the stiff end that the utility model further is set to support axle again exposes pressure cover is provided with a draw ring.
The utility model provides a kind of oil immersed type instrument transformer; compared with prior art; pressure relief device is set on casing; the oil immersed type instrument transformer is worked under high-temperature condition; temperature raises and causes transformer oil volumetric expansion in the casing; when air pressure inside during greater than the elastic force of the compression spring on the pressure relief device; gas in the casing up promotes the active force sheet on the pressure relief device; the compression pressure spring; and promote by moving plate; lifted pressure cover on the moving plate; make the inner face of pressure cover break away from holder, gas just overflows from space between the two, thereby realizes the release to the casing internal gas pressure; make the pressure in the casing keep balance, protected the miscellaneous part of oil immersed type instrument transformer.
Description of drawings
Fig. 1 is the utility model background technology outside drawing.
Fig. 2 is the D portion enlarged drawing of Fig. 1.
Fig. 3 is the utility model embodiment outside drawing.
Fig. 4 is the F portion enlarged drawing of Fig. 3.
Fig. 5 is the utility model embodiment pressure relief device front view.
Fig. 6 is the utility model embodiment pressure relief device stereogram.
Fig. 7 is the utility model embodiment pressure relief device STRUCTURE DECOMPOSITION figure.
Fig. 8 is the utility model embodiment pressure relief device cut-away view.
Fig. 9 is the utility model embodiment pressure relief device user mode cut-away view.
Embodiment
Shown in Fig. 3,4, specific embodiment of the utility model is a kind of oil immersed type instrument transformer, comprise casing 1, instrument transformer, insulator, be arranged on the pressure relief device 3 on the casing 1, fill with the insulation of transformer oil 2 in the casing as instrument transformer, shown in Fig. 5,6,7,8, pressure relief device 3 comprises oiling seat 8, middle base 9, pressure cover 31, the fixed mount 11 of coaxial setting, and oiling seat 8 is a tubulose, upper/lower terminal has opening, fixedlys connected with the upper surface of casing 1 in the lower surface.Middle base 9 lower ends are threaded with holder 8, are provided with sealing ring in middle base 9 one sides.Pressure cover 31 is movably arranged on the upper end of holder, the inner face of pressure cover 31 abuts against on the upper surface of holder, be provided with opening/closing and constitute mandril linked mechanism at middle base 9 inner chambers to pressure cover, post rod mechanism back shaft 4, compression spring 5, active force sheet 6, by moving plate 7, the stiff end 41 of back shaft 4 passes the center of pressure cover 31, be fixed on the upper surface of pressure cover 31, by moving plate 7, compression spring 5,6 three parts of active force sheet are from top to bottom arranged vertically successively, the same by moving plate 7 with active force sheet 6 structures, it all is the sheet metal of a circle, radially offer a plurality of breach on the sheet metal, by inner face 31 close neighbours of the upper surface 71 of moving plate 7 with pressure cover 31, compression spring 5 is in by between moving plate 7 and the active force sheet 6, and maintenance free state, active force sheet 6 is arranged on the free end 42 of back shaft 4, the free end 42 of back shaft 4 is provided with one section screw thread, adjusting nut 10 is arranged on the lower end of active force sheet 6, adjusting nut 10 can be along on the back shaft 4, following rotation, active force sheet 6 constitutes interlock with adjusting nut 10.
" both sides of fixed mount 11 of type are movably connected on the outside of middle base 9, the stiff end 41 of the corresponding back shaft 4 in the centre position of fixed mount 11 is provided with the anti-part 12 that rises, and the upper surface of the stiff end 41 of back shaft 4 is close in the lower surface of preventing rising part 12.The upper end face part that the stiff end 41 of back shaft 4 exposes pressure cover 31 is provided with a draw ring 13.
Oiling seat 8 in the foregoing description is arranged on the upper surface of casing, both served as toward the interior oil filler point of irritating transformer oil of casing, the hold-down support that can work as pressure relief device 3 again, the setting of split is the most rational like this, also oiling seat 8 and middle base 9 can be wholely set, constitute the holder of pressure relief device 3.
The setting of the fixed mount 11 in the foregoing description is before use pressure cover 31 to be fixed for the oil immersed type instrument transformer, before the operation of oil immersed type instrument transformer, fixed mount 11 is come loose, and forwards on one side, guarantees the operate as normal of pressure relief device 3.Is to be in free state by the compression spring 5 between moving plate 7 and the active force sheet 6 at first, when working pressure releasing device 3, can rotate adjusting nut 10 according to the size of the internal pressure of reality and regulate.The setting of draw ring 13 be for convenience manually pull-up pressure cover 31 discharge box house pressure.
The oil immersed type instrument transformer is after putting into operation; because instrument transformer heating in winding; heat is conducted to transformer oil; temperature raises and causes transformer oil 2 volumetric expansions in the casing 1; when air pressure inside during greater than the elastic force of the compression spring on the pressure relief device 35; gas in the casing 1 up promotes the active force sheet 6 on the pressure relief device 3; compression pressure spring 5; and promote to be lifted pressure cover 31 on the moving plate 4 by moving plate 4, make the inner face of pressure cover 31 break away from holder; gas just overflows from space between the two; thereby realize release, make the pressure in the casing 1 keep balance, protected the miscellaneous part of oil immersed type instrument transformer casing 1 internal gas pressure.
Claims (8)
1. oil immersed type instrument transformer with pressure relief device, comprise casing (1), instrument transformer, insulator, fill with the insulation of transformer oil (2) in the casing as instrument transformer, it is characterized in that: the oil immersed type instrument transformer also comprises the pressure relief device (3) that is arranged on the casing (1), pressure relief device (3) comprises the holder of coaxial setting, post rod mechanism, pressure cover (4), on the holder, following two ends have opening, fixedly connected with the upper surface of casing (1) in the lower surface of holder, pressure cover (4) is movably arranged on the upper end of holder, the inner face of pressure cover (4) abuts against on the upper surface of holder, but be arranged in the inner chamber of holder the post rod mechanism axial slip, the inner face close neighbour of the upper surface of post rod mechanism and pressure cover (4), the axial slip of post rod mechanism and pressure cover (4) open/close into interlock.
2. the oil immersed type instrument transformer of band pressure relief device according to claim 1, it is characterized in that: described post rod mechanism comprises back shaft (4), compression spring (5), active force sheet (6), by moving plate (7), the stiff end (41) of back shaft (4) passes the center of pressure cover (31), be fixed on the upper surface of pressure cover (31), by moving plate (7), compression spring (5), (6) three parts of active force sheet are from top to bottom arranged vertically successively, by the upper surface of moving plate (7) (71) inner face (31) close neighbour with pressure cover (31), compression spring (5) is in by between moving plate (7) and the active force sheet (6), and the maintenance free state, the free end (42) of the lower end of active force sheet (6) and back shaft (4) flexibly connects.
3. the oil immersed type instrument transformer of band pressure relief device according to claim 1 and 2, it is characterized in that: described holder is made of oiling seat (8) and middle base (9), oiling seat (8) is fixed on the upper surface of casing (1), middle base (9) lower end is threaded with holder (8), and between is provided with sealing ring.
4. the oil immersed type instrument transformer of band pressure relief device according to claim 1 and 2, it is characterized in that: the free end (42) of described back shaft (4) is provided with screw thread, adjusting nut (10) is arranged on the lower end of active force sheet (6), adjusting nut (10) can be along the upper and lower rotation of back shaft (4), and active force sheet (6) constitutes interlock with adjusting nut (10).
5. the oil immersed type instrument transformer of band pressure relief device according to claim 3, it is characterized in that: the free end (42) of described back shaft (4) is provided with screw thread, adjusting nut (10) is arranged on the lower end of active force sheet (6), adjusting nut (10) can be along the upper and lower rotation of back shaft (4), and active force sheet (6) constitutes interlock with adjusting nut (10).
6. according to the oil immersed type instrument transformer of claim 1 or 2 or 5 described band pressure relief devices, it is characterized in that: the fixed mount (11) that also is provided with " " type on the described pressure relief device, the both sides of fixed mount (11) are movably connected on the outside of middle base (9), the stiff end (41) of the corresponding back shaft in the centre position of fixed mount (11) (4) is provided with the anti-part (12) that rises, and the upper surface of the stiff end (41) of back shaft (4) is close in the anti-lower surface that rises part (12).
7. the oil immersed type instrument transformer of band pressure relief device according to claim 3, it is characterized in that: the fixed mount (11) that also is provided with " " type on the described pressure relief device, the both sides of fixed mount (11) are movably connected on the outside of middle base (9), the stiff end (41) of the corresponding back shaft in the centre position of fixed mount (11) (4) is provided with the anti-part (12) that rises, and the upper surface of the stiff end (41) of back shaft (4) is close in the anti-lower surface that rises part (12).
8. the oil immersed type instrument transformer of band pressure relief device according to claim 1 and 2 is characterized in that: the upper end face part that the stiff end (41) of described back shaft (4) exposes pressure cover (31) is provided with a draw ring (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200399040U CN201044198Y (en) | 2007-06-04 | 2007-06-04 | Oil immersion type mutual-inductor with pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200399040U CN201044198Y (en) | 2007-06-04 | 2007-06-04 | Oil immersion type mutual-inductor with pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201044198Y true CN201044198Y (en) | 2008-04-02 |
Family
ID=39259086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200399040U Expired - Fee Related CN201044198Y (en) | 2007-06-04 | 2007-06-04 | Oil immersion type mutual-inductor with pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201044198Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953120A (en) * | 2011-08-31 | 2013-03-06 | 上海朗兆机电设备有限公司 | Device for releasing pressure of single crystal growing furnace |
-
2007
- 2007-06-04 CN CNU2007200399040U patent/CN201044198Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953120A (en) * | 2011-08-31 | 2013-03-06 | 上海朗兆机电设备有限公司 | Device for releasing pressure of single crystal growing furnace |
| CN102953120B (en) * | 2011-08-31 | 2015-08-12 | 上海朗兆机电设备有限公司 | Monocrystal growing furnace pressure releasing means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080402 |