CN2645194Y - External oil type expander - Google Patents
External oil type expander Download PDFInfo
- Publication number
- CN2645194Y CN2645194Y CN 03284505 CN03284505U CN2645194Y CN 2645194 Y CN2645194 Y CN 2645194Y CN 03284505 CN03284505 CN 03284505 CN 03284505 U CN03284505 U CN 03284505U CN 2645194 Y CN2645194 Y CN 2645194Y
- Authority
- CN
- China
- Prior art keywords
- core body
- shell
- chassis
- bellows
- lower plate
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Transformer Cooling (AREA)
Abstract
An external oil type expander used in electric power system is composed of an expander shell consisting of chassis, external cover and top cover, a metallic expansion volume compensator consisting of a corrugated pipe, core upper and lower plates, and core lower plate, and an air inlet and outlet pipeline communicated with the internal cavity of corrugated pipe and communicated with the air inlet and outlet of chassis. The increase or decrease in temperature of the insulating liquid causes the bellows to compress or expand, thereby changing the size of the volume within the housing. The insulating liquid in the shell is always kept in a full state, no negative pressure is generated in the shell, and external gas and water cannot enter, so that the service life of the shell is prolonged, and the safe operation is ensured. The maintenance can be avoided, and the manpower and material resources are greatly saved.
Description
Technical field:
Cubage compensation device when the utility model relates to a kind of volume contraction or expansion that causes because of variations in temperature as iknsulating liquid or insulating gas, specifically a kind of be applied in the electric power system can with the matching used hermetically sealed outer oil type expander of sleeve pipe, transformer, capacitor or the instrument transformer of various electric pressures.
Background technology:
At present, in electric power system, can mostly there be cubage compensation measure preferably with the matching used Fuel Tanking Unit of sleeve pipe, transformer, capacitor or instrument transformer.Only leave the cavity that is filled with air when oil expands at container top when oil-filled as the hermetically sealed sleeve pipe Fuel Tanking Unit of filling type, this cavity expands as iknsulating liquid or the cubage compensation during contraction change.When the iknsulating liquid temperature raises, because of expanding, liquid volume make air compression produce excessive pressure, and easily make seal of vessel place that seepage takes place; When fluid temperature reduces, air produces negative pressure in the container, ambient atmos is entered in the container from sealing, entering gas in the container, to meet cold change water mixed with oil phase, can reduce dielectric strength, cause the puncture of sleeve pipe insulation system thus, even cause serious accidents such as short circuit, blast, bring serious harm to safe operation.In order to ensure safe operation, power department all will drop into a large amount of human and material resources every year and change iknsulating liquid or iknsulating liquid is filtered, and causes the waste of human and material resources.
Summary of the invention:
In view of the deficiency that above-mentioned prior art exists, the purpose of this utility model provides a kind of outer oil type expander that has the cubage compensation device, makes it to increase the service life, guarantees safe operation, saves human and material resources.
The purpose of this utility model is achieved in that it mainly comprises the expander housing that is made of chassis, outer cover and loam cake, it is characterized in that in this housing, being provided with by a bellows and be placed in the core body upper plate of this bellows upper and lower side, the expansion of metal formula cubage compensation device that the core body lower plate constitutes, the core body lower plate is provided with the intake and exhaust pipeline with this bellows intracavity inter-connection, this intake and exhaust pipeline and chassis with porting be connected, the bottom and the chassis of core body lower plate are connected.During use, will be full of insulating oil in the housing, make bellows place iknsulating liquid fully.When the iknsulating liquid temperature raise, liquid compressed bellows because of the pressure that is produced that expands is applied on the core body upper plate, and gas in the bellows is discharged by the intake and exhaust pipe outlet, and the shell internal volume is increased; When fluid temperature reduced, liquid volume was shunk, and pressure decreases, and by the gas that the air inlet-outlet pipe road junction enters in the bellows bellows is propped up, and the shell internal volume is reduced, the cubage compensation when changing as expansion of liquids with this.During cubage compensation, iknsulating liquid is in the situation of isolating with outside air all the time, therefore can reach non-maintaining requirement.
When the iknsulating liquid temperature too high suddenly, in case when surpassing the expansion limit (be that the bellows compression is minimum still can not satisfy cubage compensation time), for preventing to damage oil conservator or causing the cover pipe explosion, be provided with safety diaphragm at above-mentioned core body upper plate, on the chassis to being provided with the overflow pin by safety diaphragm.When bellows compresses when minimum, by the overflow pin safety diaphragm is crashed through, make that iknsulating liquid discharges through intake and exhaust pipeline and porting in the shell, make it to guarantee safety.
The utility model is owing to set up the hermetically sealed expansion of metal formula cubage compensation device that can isolate outside air, make the interior iknsulating liquid of shell always remain on full state, no negative pressure produces in the shell, and ambient atmos and water can't enter, and make it to increase the service life, guarantee safe operation.Because this device is non-maintaining structure, need not to change iknsulating liquid or iknsulating liquid is filtered, can save human and material resources greatly, and operational reliability is improved greatly.
Below in conjunction with accompanying drawing the utility model is explained.
Description of drawings:
Fig. 1 is the utility model structural representation;
Fig. 2 is an I portion enlarged drawing among Fig. 1.
Embodiment:
By accompanying drawing as can be known, the utility model mainly comprise the housing that constitutes by chassis 9, outer cover 12, loam cake 1 and by a bellows 3 be placed in the core body upper plate 6 of this bellows upper and lower side, the expansion of metal formula cubage compensation device that core body lower plate 14 constitutes and the safeguard protection facility that constitutes by safety diaphragm 5 and overflow pin 7.The lower end of core body lower plate 14 is connected with the intake and exhaust pipeline 8 that is connected with bellows 3, on this intake and exhaust pipeline 8 and the chassis 9 with porting 13 be connected.Placing the safety diaphragm 5 on the core body upper plate 6 is four, and overflow pin 7 also is four, and each safety diaphragm 5 is corresponding with the overflow pin 7 on placing core body lower plate 14, and promptly the number of safety diaphragm 5 is identical with the number of overflow pin 7.Sequence number 2 is a housing assembly among the figure; Sequence number 11 is a window assembly; Sequence number 10 O-ring seals.
Claims (2)
1, a kind of outer oil type expander that is applied in the electric power system, it mainly comprises the expander housing that is made of chassis, outer cover and loam cake, it is characterized in that in this housing, being provided with by a bellows and be placed in the core body upper plate of this bellows upper and lower side, the expansion of metal formula cubage compensation device that the core body lower plate constitutes, the core body lower plate is provided with the intake and exhaust pipeline with this bellows intracavity inter-connection, this intake and exhaust pipeline and chassis with porting be connected, the bottom and the chassis of core body lower plate are connected.
2, outer oil type expander as claimed in claim 1 is characterized in that: on above-mentioned core body upper plate, be provided with safety diaphragm, on the core body lower plate to being provided with the overflow pin by safety diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03284505 CN2645194Y (en) | 2003-07-28 | 2003-07-28 | External oil type expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03284505 CN2645194Y (en) | 2003-07-28 | 2003-07-28 | External oil type expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645194Y true CN2645194Y (en) | 2004-09-29 |
Family
ID=34303813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03284505 Expired - Lifetime CN2645194Y (en) | 2003-07-28 | 2003-07-28 | External oil type expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645194Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101223612B (en) * | 2005-07-15 | 2011-11-30 | 西门子公司 | Expansion tank for a stepping switch |
| CN105161254A (en) * | 2015-08-31 | 2015-12-16 | 山东五岳电器有限公司 | Oil conservator for oil-immersed transformer |
| CN105990000A (en) * | 2015-03-05 | 2016-10-05 | 沈阳海为电力设备有限公司 | External oil type metal corrugated expansion oil conservator |
-
2003
- 2003-07-28 CN CN 03284505 patent/CN2645194Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101223612B (en) * | 2005-07-15 | 2011-11-30 | 西门子公司 | Expansion tank for a stepping switch |
| CN105990000A (en) * | 2015-03-05 | 2016-10-05 | 沈阳海为电力设备有限公司 | External oil type metal corrugated expansion oil conservator |
| CN105990000B (en) * | 2015-03-05 | 2018-03-02 | 沈阳海为电力设备有限公司 | A kind of outer oil type metal bellow expansion oil storage tank |
| CN105161254A (en) * | 2015-08-31 | 2015-12-16 | 山东五岳电器有限公司 | Oil conservator for oil-immersed transformer |
| CN105161254B (en) * | 2015-08-31 | 2017-08-11 | 山东五岳电器有限公司 | Oil conservater for oil-filled transformer |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130728 Granted publication date: 20040929 |