CN204045349U - Three low pressure oil-filled transformers - Google Patents
Three low pressure oil-filled transformers Download PDFInfo
- Publication number
- CN204045349U CN204045349U CN201420539321.4U CN201420539321U CN204045349U CN 204045349 U CN204045349 U CN 204045349U CN 201420539321 U CN201420539321 U CN 201420539321U CN 204045349 U CN204045349 U CN 204045349U
- Authority
- CN
- China
- Prior art keywords
- case lid
- sealing ring
- limit part
- low pressure
- pressure 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.)
- Expired - Fee Related
Links
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a kind of three low pressure oil immersion-type distribution transformers, its drip irrigation device is, comprise casing and case lid, casing top is provided with outward extending flange, flange is fixedly connected with case lid, be provided with sealing ring and rigid limit part between lug upper surface and case lid lower surface, when described sealing ring stressed in compressive state time, described rigid limit part and case lid lower surface inconsistent.By adopting technique scheme; sealing ring and rigid limit part is provided with between lug upper surface and case lid lower surface; fuel tank case lid produces downward pressure to sealing ring due to the weight of self; make sealing ring forced compression; rigid limit part can withstand case lid and keep certain height not continue to move downward; thus avoid sealing ring to produce excessive deformation due to the weight that case lid self is excessive; exceed its elastic limit and followed the string too early; protection ring structure is not destroyed, and makes the work that it is permanently effective.
Description
Technical field
The utility model relates to a kind of three low pressure oil immersion-type distribution transformers.
Background technology
Three low pressure oil immersion-type distribution transformers are one of transformer, form primarily of iron core, winding and fuel tank, fuel tank seems of crucial importance in oil immersion-type distribution transformer, iron core, winding and transformer oil are all placed in one, fuel tank cap is covered above, completely cut off outside air and moisture by hermetically-sealed construction, thus prevent iron core and winding corrosion.
At present, the hermetically-sealed construction majority of the oil immersion-type distribution transformer on market does not have spacing hermetically-sealed construction, when sealing ring is subject to thrust, be difficult to be limited within required scope, and sealing ring decrement is everywhere also often different, because compression degree confirms with the perception of operator entirely, thrust is often excessive, in addition sealing ring oil case lid weight and the factor such as to vacuumize, it is in most cases the elastic limit that thrust exceedes encapsulant, make it to follow the string prematurely, cause Transformer to occur leaking oil condition.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of three low pressure oil immersion-type distribution transformers, adopts special hermetically-sealed construction, avoids sealing ring be subject to excessive thrust and follow the string too early, make the work that sealing ring is permanently effective.
For achieving the above object, the utility model provides following technical scheme: a kind of three low pressure oil immersion-type distribution transformers, comprise casing and case lid, described casing top is provided with outward extending flange, described flange is fixedly connected with case lid, is provided with sealing ring between described lug upper surface and case lid lower surface, is also provided with rigid limit part between described lug upper surface and case lid lower surface, when described rigid limit part and case lid lower surface inconsistent time, described sealing ring is stressed in compressive state.
By adopting technique scheme, described fuel tank case lid is fixedly connected with by securing members such as bolts with described flange, sealing ring is provided with between described lug upper surface and case lid lower surface, fuel tank case lid produces downward pressure to sealing ring due to the weight of self, make sealing ring forced compression, but owing to being provided with rigid limit part between described lug upper surface and case lid lower surface, described rigid limit part can withstand case lid and keep certain height not continue to move downward, thus avoid described sealing ring to produce excessive deformation due to the weight that case lid self is excessive, exceed its elastic limit and followed the string too early, protection ring structure is not destroyed, make the work that it is permanently effective.
The utility model is set to further: described sealing ring cross section is for oval, and described sealing ring inside center is hollow setting.
By adopting technique scheme, described sealing ring is subject to case lid Action of Gravity Field and produces deformation, described sealing ring produces tension force on the textured surface of not pressurized both sides, the Tensity size on this surface is directly proportional to the size of deflection, the tension force density on its surface and its surface area size, surface configuration is relevant, under same thrust effect, cross section is that oval sealing ring both side surface is amassed larger, tension force density is little, thus avoid the tensile strength exceeding its surface molecular chain due to tension force density that molecule is pulled off, there is crackle in surface, and then follows the string.Described sealing ring central part is hollow setting, and when sealing ring produces distortion by case lid gravity, central part is compressed formation air spring, and its elasticity is better than solid sealing ring.
The utility model is set to further: described rigid limit part is opening steel ring.
By adopting technique scheme, what can facilitate described opening steel ring is installed on dismounting, seems more flexible.
The utility model is set to further: described open steel number of turns amount is two, and diameter is small one and large one setting, and described sealing ring is between two opening steel rings.
By adopting technique scheme, both can increase rigidity and the aesthetic feeling of described flange, uniform force inside and outside sealing ring can be ensured again, prevent local pressure from producing gross distortion, affect the life-span.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of the utility model three low pressure oil immersion-type distribution transformer embodiment;
Fig. 2 is the partial enlarged drawing of described flange and case lid junction I.
1, casing; 2, case lid; 3, flange; 4, sealing ring; 5, rigid limit part.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model three low pressure oil immersion-type distribution transformer embodiment is described further.
A kind of three low pressure oil immersion-type distribution transformers, comprise casing 1 and case lid 2, described casing 1 top is provided with outward extending flange 3, described flange 3 is fixedly connected with case lid 2, sealing ring 4 is provided with between described flange 3 upper surface and case lid 2 lower surface, also be provided with rigid limit part 5 between described flange 3 upper surface and case lid 2 lower surface, when described rigid limit part 5 is inconsistent with case lid 2 lower surface, described sealing ring 4 is stressed in compressive state.
By adopting technique scheme, described fuel tank case lid 2 is fixedly connected with by securing members such as bolts with described flange 3, sealing ring 4 is provided with between described flange 3 upper surface and case lid 2 lower surface, fuel tank case lid 2 produces downward pressure to sealing ring 4 due to the weight of self, make sealing ring 4 forced compression, but owing to being provided with rigid limit part 5 between described flange 3 upper surface and case lid 2 lower surface, described rigid limit part 5 can withstand case lid 2 and keep certain height not continue to move downward, thus avoid described sealing ring 4 to produce excessive deformation due to the excessive weight of case lid 2 self, exceed its elastic limit and followed the string too early, protection sealing ring 4 structure is not destroyed, make the work that it is permanently effective.
Described sealing ring 4 cross section is oval, and described sealing ring 4 inside center is hollow setting.
As another kind of execution mode, described sealing ring 4 cross section can also be rectangle, but considers that the tension force density of edges and corners is greater than the tension force density on smooth arc-shaped surface, therefore the edges and corners concentration of tension forces of square-section.Relative to square-section, circular cross-section surface tension is more evenly distributed, therefore the present embodiment is preferred, and described sealing ring 4 cross section is oval, and described sealing ring 4 heart portion is hollow setting.Like this, described sealing ring 4 is subject to case lid 2 Action of Gravity Field and produces deformation, described sealing ring 4 produces tension force on the textured surface of not pressurized both sides, the Tensity size on this surface is directly proportional to the size of deflection, the tension force density on its surface and its surface area size, surface configuration is relevant, under same thrust effect, cross section is that oval sealing ring 4 both side surface is amassed larger, tension force density is little, thus avoid the tensile strength exceeding its surface molecular chain due to tension force density that molecule is pulled off, there is crackle in surface, and then follows the string.Described sealing ring 4 central part is hollow setting, and when sealing ring 4 produces distortion by case lid 2 gravity, central part is compressed formation air spring, and its elasticity is better than solid sealing ring 4.Described sealing ring 4 central hollow structure is injection molded by injection mould.
Described rigid limit part 5 is opening steel ring.
By adopting technique scheme, what can facilitate described opening steel ring is installed on dismounting, seems more flexible.
Described open steel number of turns amount is two, and diameter is small one and large one setting, and described sealing ring 4 is between two opening steel rings.
By adopting technique scheme, namely can increase rigidity and the aesthetic feeling of described flange 3, uniform force inside and outside sealing ring 4 can be ensured again.
As another kind of execution mode, described sealing ring 4 quantity also can be one, but considers like this, and may make sealing ring 4 discontinuity, stressed, another side does not stress, and local pressure causes it to produce serious deformation, affects its life-span.Therefore the present embodiment is preferred, described open steel number of turns amount is two or more.
Claims (4)
1. a low pressure oil immersion-type distribution transformer, comprise casing and case lid, described casing top is provided with outward extending flange, described flange is fixedly connected with case lid, sealing ring is provided with between described lug upper surface and case lid lower surface, it is characterized in that: between described lug upper surface and case lid lower surface, be also provided with rigid limit part, when described rigid limit part and case lid lower surface inconsistent time, described sealing ring is stressed in compressive state.
2. three low pressure oil immersion-type distribution transformers according to claim 1, is characterized in that: described sealing ring cross section is for oval, and described sealing ring inside center is hollow setting.
3. three low pressure oil immersion-type distribution transformers according to claim 1 and 2, is characterized in that: described rigid limit part is opening steel ring.
4. three low pressure oil immersion-type distribution transformers according to claim 3, is characterized in that: described open steel number of turns amount is two, and diameter is small one and large one setting, and described sealing ring is between two opening steel rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539321.4U CN204045349U (en) | 2014-09-19 | 2014-09-19 | Three low pressure oil-filled transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539321.4U CN204045349U (en) | 2014-09-19 | 2014-09-19 | Three low pressure oil-filled transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204045349U true CN204045349U (en) | 2014-12-24 |
Family
ID=52245988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420539321.4U Expired - Fee Related CN204045349U (en) | 2014-09-19 | 2014-09-19 | Three low pressure oil-filled transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204045349U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867658A (en) * | 2015-04-28 | 2015-08-26 | 安徽省神虹变压器股份有限公司 | Sealing device for oil-immersed distribution transformer |
| CN110241884A (en) * | 2019-07-12 | 2019-09-17 | 山重建机有限公司 | A kind of digger engine cover with position-limit mechanism |
| CN110534304A (en) * | 2018-05-23 | 2019-12-03 | Abb瑞士股份有限公司 | With the electrical equipment for rupturing oily air deflector |
-
2014
- 2014-09-19 CN CN201420539321.4U patent/CN204045349U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867658A (en) * | 2015-04-28 | 2015-08-26 | 安徽省神虹变压器股份有限公司 | Sealing device for oil-immersed distribution transformer |
| CN110534304A (en) * | 2018-05-23 | 2019-12-03 | Abb瑞士股份有限公司 | With the electrical equipment for rupturing oily air deflector |
| CN110534304B (en) * | 2018-05-23 | 2022-03-25 | 日立能源瑞士股份公司 | Electrical apparatus with a broken oil deflector |
| CN110241884A (en) * | 2019-07-12 | 2019-09-17 | 山重建机有限公司 | A kind of digger engine cover with position-limit mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204045349U (en) | Three low pressure oil-filled transformers | |
| CN203114851U (en) | Screw protecting cover | |
| CN207554782U (en) | For the sealing element of liquid compound spring | |
| CN205854933U (en) | A kind of fixing device when transformer transporting | |
| CN202597915U (en) | Pipeline crossing sealing structure | |
| CN202680113U (en) | Aeration greenhouse | |
| CN204385757U (en) | A kind of electric power line pole tower ever-frozen ground anchor foundation | |
| CN204090664U (en) | A kind of stub with barb | |
| CN207093989U (en) | A kind of flange | |
| CN202732176U (en) | Choke plug | |
| CN204284193U (en) | A kind of structure-improved of universal bearing | |
| CN206682497U (en) | A kind of freezer compressor copper pipe tension rubber plug structure | |
| CN203948247U (en) | Air pressure pump damping device | |
| CN204004776U (en) | A kind of faucet for water dispenser | |
| CN203857036U (en) | Oil seal | |
| CN203569647U (en) | Cast iron circular floor drain | |
| CN206721608U (en) | Chinampa filling particle | |
| CN202617800U (en) | Novel planting barrel | |
| CN203058132U (en) | Inflatable float with base leveling structure | |
| CN207122592U (en) | A kind of frost valve | |
| CN204934302U (en) | A kind of kettle flattens sealing water device | |
| CN202843011U (en) | Novel spring mattress | |
| CN204113180U (en) | Righting well testing mouth sealing device | |
| CN203907913U (en) | Fixing structure and humidifier | |
| CN203979480U (en) | Valve rod selfsealings ball valve |
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: 20141224 Termination date: 20160919 |