CN203966800U - A kind of sleeve pipe of transformer and case lid hermetically-sealed construction - Google Patents
A kind of sleeve pipe of transformer and case lid hermetically-sealed construction Download PDFInfo
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- CN203966800U CN203966800U CN201420388436.8U CN201420388436U CN203966800U CN 203966800 U CN203966800 U CN 203966800U CN 201420388436 U CN201420388436 U CN 201420388436U CN 203966800 U CN203966800 U CN 203966800U
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- case lid
- sleeve pipe
- spring
- sealed construction
- adsorption
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Abstract
The utility model discloses a kind of sleeve pipe and case lid hermetically-sealed construction of transformer, comprise case lid and be arranged on the sleeve pipe on case lid, described sleeve pipe includes body and insulator, in the middle of described case lid, be provided with sleeve pipe installing hole, described sleeve pipe is located in described sleeve pipe installing hole, described sleeve pipe includes spring sealed mechanism, described spring sealed mechanism presses close to case lid surface and arranges, described spring sealed mechanism comprises rubber seal, adsorption gasket, butterfly spring, on described case lid, be provided with positive stop, in described case lid, be provided with annular seal space, the sealing device life-span of the present utility model is long, adsorption gasket can prevent greasy dirt, sewage etc. enter fuel tank and butterfly spring is set can regulates pressure, be unlikely to not press tightly and be also unlikely to press too tightly, good seal performance.
Description
Technical field
The utility model relates to field transformer, relates in particular to a kind of sleeve pipe and case lid hermetically-sealed construction of transformer.
Background technology
If transformer high-low-voltage side sleeve pipe exists defect or fault, safe operation and the power supply reliability thereof of transformer will directly be jeopardized.For example sleeve pipe rubber cushion seal failure, Oil-impregnated Paper Condenser Bushing in History top seal is bad, can cause extraneous greasy dirt, steam etc. to enter fuel tank, and cause fuel tank inner fluid to be revealed, and the sealing property of sealing ring and the compression degree of sealing ring have much relations, do not press tightly, sealing ring does not have sealing function, press too tightly, sealing ring follows the string, and does not have equally sealing function; Sealing ring is exposed in air, is subject to for a long time solar ulatraviolet radiation, is subject to the acid in rainwater, the corrosion of alkali composition, and the time one is long, and transformer sealing ring follows the string because of aging, does not also have the effect of sealing.Therefore invent a kind of sleeve pipe and case lid hermetically-sealed construction of oil-immersed type transformer, improve useful life of sealing ring, prevent from that greasy dirt from entering to be very important.
A kind of transformer high-voltage bushing fixed structure is disclosed in the invention that is 201310370901.5 in the patent No., comprise porcelain vase and flange thereof, and three compressing members, described compressing member respectively in the form of sheets, by the suitable body of the contact-making surface of an inner wall shape and described flange, and be positioned at these body two ends fixed via form.The present invention will be the compressing member of absolute version after originally installing, be modified into and interconnect structure, and make the inner wall shape of compressing member suitable with the shape that it will contact fastening flange contact facings, therefore, have enough guarantees at the material hardness of making compressing member, position fixing by three harness fasteners that are positioned on same circumference, because two presser feets of three compressing members are connected between two overall structure and arrange in pairs or groups fastening, porcelain vase thrust is evenly pressed down, porcelain vase is pressed on case lid in the mode of uniform load by seal gasket, therefore, there is particularly preferred sealing property, transformer there will not be oil leakage phenomenon.
But, above-mentioned fixed structure is provided with screw rod in order to fixing, although clamping piece is fastening effective, but transformer tank covers and is provided with screwed hole, screwed hole place poor sealing can cause from this and reveal again, increased the position that leakage occurs, sealing effectiveness is not complied with one's wishes, and does not consider the problem of the adhesions such as greasy dirt.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of good seal performance for the above-mentioned state of the art, and the sealing device life-span is long, and prevents greasy dirt, and sewage etc. enter sleeve pipe and the case lid hermetically-sealed construction of the transformer of fuel tank.
For achieving the above object, the utility model provides following technical scheme: a kind of sleeve pipe of transformer and case lid hermetically-sealed construction, comprise case lid and be arranged on the sleeve pipe on case lid, described sleeve pipe includes body and insulator, in the middle of described case lid, be provided with sleeve pipe installing hole, described sleeve pipe is located in described sleeve pipe installing hole, described sleeve pipe includes spring sealed mechanism, described spring sealed mechanism presses close to case lid surface and arranges, on described case lid, be provided with positive stop, in described case lid, be provided with annular seal space.
By adopting technique scheme, on case lid, be provided with positive stop and can carry out well spacingly to elastic sealing structure, prevent slippage, in addition, in case lid, be provided with annular seal space, realize and just carry out leakproof seal in transformer inside, strengthen sealing effectiveness.
As concrete technical scheme of the present utility model, described spring sealed mechanism comprises rubber seal, described rubber seal laminating case lid surface setting and internal diameter and described pipe diameter are suitable, circular adsorption gasket is installed in described rubber seal, on described adsorption gasket, is connected with butterfly spring.
By adopting technique scheme, adsorption gasket is installed in rubber seal, can block rubber seal to a certain extent, avoid direct sunlight and accelerate the aging of rubber, cause seal failure.
The utility model is further set to: described adsorption gasket includes adsorption layer and rigid layer, described rigid layer buries and overlays in described adsorption layer, described adsorption layer is flexible graphite layer, described rigid layer is made up of stainless steel cloth, in the middle of described adsorption gasket, offer through hole, described through hole diameter is not less than pipe diameter.
By adopting technique scheme, adopt flexible graphite layer as adsorption layer, can increase the soil pick-up of elastic packing mechanism, water absorbing capacity, the flexible graphite expanded graphite that is otherwise known as, it has extremely strong resistance to pressure, pliability, the anti-height of energy, low temperature is also anticorrosive, in addition, it is a kind of good adsorbent, very easily adsorb oils, the materials such as soda acid impurity, utilize flexible graphite to make adsorption layer as material, can effectively stop that the materials such as extraneous greasy dirt enter from seal in the mailbox of transformer, pollute, set up stainless steel cloth to increase the intensity of flexible graphite.
The utility model is further set to: described butterfly spring is set in outside described body, described butterfly spring comprises front and the back side, described front is connected with insulator, conflict and be connected with adsorption gasket in the described back side, described butterfly spring internal diameter is not less than pipe diameter and external diameter is not more than adsorption gasket external diameter.
By adopting technique scheme, butterfly spring is set and can regulates the pressure to rubber seal, prevent the excessive excessive deformation that causes of its pressure, also prevent that the too small sealing effectiveness of pressure is bad, and disk spring is tapered in the axial direction and bear the special spring of load, its rigidity is large, and buffering vibration absorption ability is strong, can bear large load with small deformation, be suitable for the little occasion of axial space requirement.
The utility model is further set to: along rubber seal, circumferentially evenly setting and quantity are at least three to described positive stop.
By adopting technique scheme, in order to prevent that rubber seal from producing displacement, around it, be provided with positive stop and carry out spacingly, positive stop shape is not limit, and because rubber seal outer ring is shaped as circle, just can carry out spacing so three limiting block blocks at least will be set.
The utility model is further set to: the groove that described annular seal space is ring-type, in described groove, sealing ring is installed, and the suitable and thickness of described sealing ring internal diameter and described pipe diameter is greater than the height of described groove on longitudinally.
By adopting technique scheme, the thickness of sealing ring is greater than described groove height can make sealing ring be extruded to a certain extent, increases its sealing effectiveness.
Compared with prior art, the utility model has the advantage of: the sealing device life-span is long, adsorption gasket can prevent that greasy dirt, sewage etc. from entering fuel tank, butterfly spring is set and can regulates pressure, be unlikely to not press tightly and be unlikely to press to such an extent that too tightly cause losing efficacy yet, and sealing ring do not carry out direct sunlight, effectively prevents rubber sclerosis, good seal performance, transformer there will not be oil leakage phenomenon.
Brief description of the drawings
Fig. 1 is sleeve pipe and the case lid sealed structural representation of transformer in the utility model embodiment;
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Reference numeral: 1, transformer; 2, sleeve pipe; 3, case lid; 4, body; 5, insulator; 6, sleeve pipe installing hole; 7, spring sealed mechanism; 8, positive stop; 9, annular seal space; 10, rubber seal; 11, adsorption gasket; 12, butterfly spring; 13, adsorption layer; 14, rigid layer; 15, front; 16, the back side; 17, groove; 18, sealing ring; 19, through hole.
Embodiment
Sleeve pipe below in conjunction with accompanying drawing embodiment to the utility model transformer and case lid hermetically-sealed construction are described in further detail.
As shown in Figure 1, for sleeve pipe and the case lid sealed structural representation of transformer in the utility model embodiment, comprise case lid 3 and be arranged on the sleeve pipe 2 on case lid 3, described sleeve pipe 2 includes body 4 and insulator 5, in the middle of described case lid 3, be provided with sleeve pipe installing hole 6, described sleeve pipe 2 is located in described sleeve pipe installing hole 6, described sleeve pipe 2 includes spring sealed mechanism 7, described spring sealed mechanism 7 presses close to case lid 3 surfaces and arranges, in order to carry out spacing to elastic packing mechanism 7, prevent slippage, on described case lid 3, be provided with positive stop 8, along rubber seal 10, circumferentially evenly setting and quantity are at least three to described positive stop 8.Described positive stop can be one-body molded with case lid 3, also can install by modes such as welding, in order to strengthen sealing effectiveness, in described case lid 3, be provided with annular seal space 9, tentatively seal, the groove 17 that described annular seal space 9 is ring-type, in described groove 17, sealing ring 18 is installed, described sealing ring 18 internal diameters and described body 4 diameters are suitable and thickness is greater than the height of described groove 17, make the thickness of sealing ring 18 be greater than described groove 17 and highly can make sealing ring 18 be extruded to a certain extent, increase its sealing effectiveness.
As shown in Figure 2, described spring sealed mechanism 7 comprises rubber seal 10, the fit surperficial setting of case lid 3 and internal diameter and described body 4 diameters of described rubber seal 10 is suitable, circular adsorption gasket 11 is installed in described rubber seal 10, can block rubber seal 10 to a certain extent, avoid direct sunlight and accelerate the aging of rubber, cause seal failure, described adsorption gasket 11 includes adsorption layer 13 and rigid layer 14, described rigid layer 14 buries and overlays in described adsorption layer 13, described adsorption layer 13 is flexible graphite layer, adopt flexible graphite layer as adsorption layer 13, can increase the soil pick-up of elastic packing mechanism, water absorbing capacity, described rigid layer 14 is made up of stainless steel cloth, can improve the intensity of flexible graphite, in the middle of described adsorption gasket 11, offer through hole 19, described through hole 19 diameters are not less than body 4 diameters.On described adsorption gasket 11, be connected with butterfly spring 12, described butterfly spring 12 comprises front 15 and the back side 16, described positive 15 are connected with insulator 5, conflict and be connected with adsorption gasket 11 in the described back side 16, described butterfly spring 12 internal diameters are not less than body 4 diameters and external diameter is not more than adsorption gasket 11 external diameters, butterfly spring 12 is set and can regulates pressure, be unlikely to not press tightly and be also unlikely to press too tightly, and rubber seal 10 is not carried out direct sunlight, effectively prevent rubber sclerosis, good seal performance, transformer 1 there will not be oil leakage phenomenon.
The above is only preferred implementation of the present utility model, and protection range of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. the sleeve pipe of a transformer and case lid hermetically-sealed construction, comprise case lid and be arranged on the sleeve pipe on case lid, described sleeve pipe includes body and insulator, in the middle of described case lid, be provided with sleeve pipe installing hole, described sleeve pipe is located in described sleeve pipe installing hole, it is characterized in that: described sleeve pipe includes spring sealed mechanism, and described spring sealed mechanism presses close to case lid surface and arranges, on described case lid, be provided with positive stop, in described case lid, be provided with annular seal space.
2. the sleeve pipe of transformer according to claim 1 and case lid hermetically-sealed construction, it is characterized in that: described spring sealed mechanism comprises rubber seal, described rubber seal laminating case lid surface setting and internal diameter and described pipe diameter are suitable, circular adsorption gasket is installed in described rubber seal, on described adsorption gasket, is connected with butterfly spring.
3. the sleeve pipe of transformer according to claim 2 and case lid hermetically-sealed construction, it is characterized in that: described adsorption gasket includes adsorption layer and rigid layer, described rigid layer buries and overlays in described adsorption layer, described adsorption layer is flexible graphite layer, described rigid layer is made up of stainless steel cloth, in the middle of described adsorption gasket, offer through hole, described through hole diameter is not less than pipe diameter.
4. the sleeve pipe of transformer according to claim 3 and case lid hermetically-sealed construction, it is characterized in that: described butterfly spring is set in outside described body, described butterfly spring comprises front and the back side, described front is connected with insulator, conflict and be connected with adsorption gasket in the described back side, described butterfly spring internal diameter is not less than pipe diameter and external diameter is not more than adsorption gasket external diameter.
5. the sleeve pipe of transformer according to claim 4 and case lid hermetically-sealed construction, is characterized in that: along rubber seal, circumferentially evenly setting and quantity are at least three to described positive stop.
6. the sleeve pipe of transformer according to claim 5 and case lid hermetically-sealed construction, it is characterized in that: the groove that described annular seal space is ring-type, in described groove, sealing ring is installed, the suitable and thickness of described sealing ring internal diameter and described pipe diameter is greater than the height of described groove on longitudinally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420388436.8U CN203966800U (en) | 2014-04-24 | 2014-07-14 | A kind of sleeve pipe of transformer and case lid hermetically-sealed construction |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204775.6 | 2014-04-24 | ||
| CN201420204775 | 2014-04-24 | ||
| CN201420388436.8U CN203966800U (en) | 2014-04-24 | 2014-07-14 | A kind of sleeve pipe of transformer and case lid hermetically-sealed construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203966800U true CN203966800U (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420388436.8U Expired - Fee Related CN203966800U (en) | 2014-04-24 | 2014-07-14 | A kind of sleeve pipe of transformer and case lid hermetically-sealed construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203966800U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137898A (en) * | 2018-02-09 | 2019-08-16 | 江苏嘉盟电力设备有限公司 | Sealing shroud, seal assembly and the insulator arrangement wire clamp comprising it |
| CN113871142A (en) * | 2021-09-14 | 2021-12-31 | 芜湖市卓亚电气有限公司 | Oil-immersed transformer bushing sealing structure |
-
2014
- 2014-07-14 CN CN201420388436.8U patent/CN203966800U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110137898A (en) * | 2018-02-09 | 2019-08-16 | 江苏嘉盟电力设备有限公司 | Sealing shroud, seal assembly and the insulator arrangement wire clamp comprising it |
| CN110137898B (en) * | 2018-02-09 | 2023-12-29 | 江苏嘉盟电力设备有限公司 | Sealing sleeve, sealing assembly and insulating equipment wire clamp comprising sealing sleeve and sealing assembly |
| CN113871142A (en) * | 2021-09-14 | 2021-12-31 | 芜湖市卓亚电气有限公司 | Oil-immersed transformer bushing sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20210714 |