CN102842406A - Constant voltage condenser of evaporative-cooling-liquid-immersed transformer - Google Patents
Constant voltage condenser of evaporative-cooling-liquid-immersed transformer Download PDFInfo
- Publication number
- CN102842406A CN102842406A CN2012103161788A CN201210316178A CN102842406A CN 102842406 A CN102842406 A CN 102842406A CN 2012103161788 A CN2012103161788 A CN 2012103161788A CN 201210316178 A CN201210316178 A CN 201210316178A CN 102842406 A CN102842406 A CN 102842406A
- Authority
- CN
- China
- Prior art keywords
- constant voltage
- evaporative cooling
- casing
- transformer
- cooling liquid
- 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.)
- Pending
Links
Images
Landscapes
- Transformer Cooling (AREA)
Abstract
The invention provides a constant voltage condenser of an evaporative-cooling-liquid-immersed transformer. The constant voltage condenser comprises a box body composed of an upper box body and a lower box body, an evaporative-cooling-liquid-immersed transformer body arranged in the box body, an evaporating cooling medium arranged in the box body, and a radiator arranged between the upper box body and the lower box body, wherein the radiator is used for keeping vapor pressure in a cavity of the box body and condensing vapors produced in the box body when an evaporative-cooling-liquid-immersed transformer is in an environment with an rated operation temperature. The constant voltage condenser can condense vapors in the box body of the evaporative-cooling-liquid-immersed transformer into liquid and enable the liquid can flow back, and can ensure an safe operation of the evaporative-cooling-liquid-immersed transformer under the condition of stabilizing the vapor pressure within a safe range.
Description
Technical field
The present invention relates to the power technology field, relate in particular to a kind of constant voltage condenser of evaporative cooling liquid soaking transformer.
Background technology
According to the difference of the type of cooling, transformer can be divided into oil-filled transformer, dry-type transformer, SF (Gas Insulated Transformer, several classifications such as GIT) usually.
The coolant of oil-filled transformer is transformer oil or oil resistant; Its advantage is that electrical strength is high; But traditional big capacity oil-filled transformer oil mass is big; In case failover causes internal temperature to surpass when running into naked light behind the burning-point, can initiation fire, to skyscraper and people's the serious threat of life property safety formation.Therefore, oil-filled transformer should not use at the high special occasions of fire protection requirement.
Dry-type transformer is difficult combustion transformer, but is not fire transformer, and its working temperature is up to 185 ℃; When temperature surpasses critical value, meet naked light meeting breaking out of fire, and; Dry-type transformer costs an arm and a leg; Cost exceeds 2.5 ~ 4 times than common oil-filled transformer, and winding current density is low, and effectively material use is quite insufficient.In addition, the electric pressure of dry-type transformer is lower than 35kV, can't reach 110kV, can't develop to the high voltage large capcity field.
Gas-insulated transformer adopts sulfur hexafluoride gas as dielectric and coolant; Because density, insulation property and the heat transfer property of sulfur hexafluoride gas all far are inferior to transformer oil; In order to improve its insulation property and heat transfer property; Usually the oil tank of transformer internal pressure can reach 0.2～0.4MPa (the low pressure gas-insulated transformer below the rated voltage 110kV), or 1.2～3.0MPa (rated voltage 132kV～500kV hyperbar gas-insulated transformer), therefore; Transformer insulated and cooling problem become very outstanding after the gas leakage, and it is out of service with transformer as early as possible to have to.In addition, the SF volume is big, weight big, cost exceeds 4～8 times than common oil-filled transformer, and manufacturing process is complicated, and the dustproof requirement of manufacturing environment is quite high, and the requirement of antiseep is also very strict.
More than in three kinds of power transformer products, oil-filled transformer and dry-type transformer development early, technology maturation all obtains the large-scale promotion operation in electric power system; SF development is later, with high costs, and manufacture difficulty is higher, and environmental-protecting performance is poor, but it has and do not fire explosion-resistance characteristic, only in big and medium-sized cities and key project, uses at present.
Along with the high speed development of urban construction, big city population is more and more intensive, and all kinds of buildings such as high-rise, underground installation are more and more, add that people are increasingly high to the dependence and the degree of consumption of electric power, and electricity consumption sharply increases.Urban land resource is in short supply day by day, and the downtown area often is bustling commercial land, and the soil commercial value is high, and the land used anxiety causes the transformer station site to be difficult to find, and promptly enables to obtain the site land used, and area is also very little, and design difficulty is big, requirement is high; The requirement that downtown area transformer station and surrounding enviroment are coordinated is high, and safety such as fire prevention, explosion-proof, its anti-noise and environmental requirement are high, and construction investment is strengthened.Therefore, press for that employing is not fired, explosion-proof, environmental protection, energy-conservation power equipment product, make city transformer station can adopt the underground power station or attach the formula of building power station scheme, solve above-mentioned contradiction.
Summary of the invention
Inflammable, explosive for solving in the prior art transformer; Not environmental protection; Not energy-conservation technical problem; The present invention provides a kind of constant voltage condenser of evaporative cooling liquid soaking transformer, comprising: the casing of being made up of upper box and lower box, be loaded on the evaporative cooling liquid immersion type transformer body in the said casing and be loaded on the evaporative cooling medium in the said casing; Said constant voltage condenser also comprises: be arranged at the radiator between said upper box and the lower box; When it is used for said evaporative cooling liquid soaking transformer and is in specified operating temperature; The vapour pressure that keeps the vapour pressure in the cavity of said casing, and the steam that produces in the said casing carried out condensation.
Wherein, the area of dissipation of said cabinets cavity capacity and radiator is directly proportional with the middle loss and the dielectric total amount of said evaporative cooling liquid soaking transformer.
Wherein, said radiator remains on 0～20kpa with the vapour pressure in the cavity of said casing.
Wherein, said constant voltage condenser also comprises: control pressurer system, and it comprises:
Pressure sensor, electromagnetically operated valve;
Said pressure sensor is used for monitoring in real time the interior vapour pressure of cavity of said casing, and when the steam in the cavity of said casing reached 20kpa, pressure sensor sent signal to said electromagnetically operated valve, and said electromagnetically operated valve is opened, and deaeration discharges pressure;
When the evaporative cooling liquid soaking transformer in the said casing was in specified operating temperature, said electromagnetically operated valve was opened for several times in start-up phase, after the air in the cavity of said casing is drained, did not restart;
Wherein, said control pressurer system also comprises: pressure relief valve;
Said pressure relief valve is used for when the said electromagnetically operated valve normally air-out that breaks down, when the pressure in the cavity of casing above starting behind the 20kpa and when reaching the opening pressure of said pressure relief valve, send alarm signal simultaneously.
Wherein, said pressure sensor is the electronic pressure transducer of the vapour pressure in the cavity that can show said casing;
The bore that said electromagnetically operated valve is is the stainless steel electromagnetically operated valve of 80mm;
The opening pressure of said pressure relief valve is 35kpa.
Wherein, said constant voltage condenser also comprises: liquid level gauge;
Said liquid level gauge adopts magnetic turnover plate type liquid level gauge; It is used for reflecting in real time the liquid level of the evaporative cooling medium in the said casing; When said casing occurs leaking or fault causes liquid level to reduce, and liquid level sends alarm signal when being reduced to preset alarming value.
Wherein, said constant voltage condenser also comprises: flange-interface.
Wherein, the constant voltage condenser of said evaporative cooling liquid soaking transformer is the constant voltage condenser of 63MVA/110kv evaporative cooling liquid soaking transformer.
Embodiment of the present invention has following beneficial effect:
The constant voltage condenser of evaporative cooling liquid soaking transformer provided by the invention; It can guarantee that the interior vapor condensation of casing of evaporative cooling liquid soaking transformer is liquid and refluxes; Simultaneously steam pressure is stabilized in the safe range, to guarantee the safe operation of evaporative cooling liquid soaking transformer.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the constant voltage structure of condenser sketch map of evaporative cooling liquid soaking transformer provided by the invention.
Fig. 2 is the structural representation of control pressurer system embodiment one of the constant voltage condenser of evaporative cooling liquid soaking transformer provided by the invention.
Fig. 3 is the structural representation of control pressurer system embodiment two of the constant voltage condenser of evaporative cooling liquid soaking transformer provided by the invention.
Embodiment
At first need to prove, inflammable, explosive for solving in the prior art transformer, not environmental protection, not energy-conservation technical problem, the present invention provides a kind of evaporative cooling liquid soaking transformer, and this is a kind of non-homogeneous phase type power transformer for evaporative cooling product solution.This scheme has solved the variety of issue that existing transformer exists in cooling technology; This product comprises casing, is loaded on the transformer body in the casing and is loaded on the evaporative cooling medium in the casing; Wherein, The evaporating temperature of coolant is between 30-123 ℃, and transformer body is dipped in the said evaporative cooling medium.During transformer work; The evaporation of said coolant, condensation overall process need not additionaling power; Can form well, Automatic Cycle cooling efficiently, and can reduce the operating temperature of transformer, improve the operational efficiency of transformer; And the environmental protection characteristic of use therein coolant (AHFC-8160) is good, is superior to the sulphur hexafluoride medium that uses in the conventional art greatly.
This non-homogeneous phase type power transformer for evaporative cooling is in running, and this cognition produces loss liquid dielectric is vaporized, and the steam that the vaporization back produces collects in the top of casing, produces steam pressure.
Therefore, the present invention further provides a kind of constant voltage condenser of evaporative cooling liquid soaking transformer, and it can be a liquid return with the vapor condensation in the casing, simultaneously steam pressure is stabilized in the safe range, guarantees the safe operation of transformer.
Referring to Fig. 1, be the constant voltage structure of condenser sketch map of a kind of evaporative cooling liquid soaking transformer provided by the invention.
The present invention provides a kind of constant voltage condenser of evaporative cooling liquid soaking transformer, comprising:
By the casing that upper box 3 and lower box 5 are formed, upper box 3 connects with lower box 5; Be loaded on the evaporative cooling liquid immersion type transformer body (figure does not show) in the said casing and be loaded on the evaporative cooling medium (figure does not show) in the said casing; Said constant voltage condenser also comprises: be arranged at the radiator 4 between said upper box 3 and the lower box 5; When it is used for said evaporative cooling liquid soaking transformer and is in specified operating temperature; The vapour pressure that keeps the vapour pressure in the cavity of said casing, and the steam that produces in the said casing carried out condensation.
Wherein, the area of dissipation of said cabinets cavity capacity and radiator 4 is directly proportional with the middle loss and the dielectric total amount of said evaporative cooling liquid soaking transformer.And said radiator 4 remains on 0～20kpa with the vapour pressure in the cavity of said casing.
Concrete; Under the specified operating temperature of evaporative cooling liquid soaking transformer; Radiator 4 and casing acting in conjunction, the vapour pressure that guarantees the formation of evaporative cooling medium under this specified operating temperature in the cavity of casing between 0～20kPa, the airtight operation of whole system.And said radiator 4 can also carry out condensation to the steam that produces under this specified operating temperature, makes it form self-circulation system.
Need to prove that the described casing of the embodiment of the invention is welded by the 8mm steel plate, the finish coatings color is with body fuel tank color (light grey B03).The casing processing technology is carried out with reference to the oil tank of transformer manufacturing process, after the product manufacturing is accomplished, carry out compressive resistance test and leakage test, and its test standard is with reference to the oil tank of transformer relevant criterion.
The described radiator 4 of the embodiment of the invention is improved by fin type heat radiator for transformer, has increased steel plate thickness and weld strength, makes its delivery test pressure reach 180kPa.Its mounting means changes the collector tube welding into by the tube head welding.
Preferably, the constant voltage condenser of evaporative cooling liquid soaking transformer provided by the invention also comprises liquid level gauge 1, flange-interface 6 and control pressurer system 2, wherein:
Said liquid level gauge 1 adopts magnetic turnover plate type liquid level gauge; It is used for reflecting in real time the liquid level of the evaporative cooling medium in the said casing; When said casing occurs leaking or fault causes liquid level to reduce, and liquid level sends alarm signal when being reduced to preset alarming value.In concrete the realization, the effective depth of liquid level gauge 1 is 750mm.
The size of the flange-interface 6 of the constant voltage condenser of evaporative cooling liquid soaking transformer provided by the invention should be complementary with the evaporative cooling liquid soaking transformer; Flange is not opened seal groove; This flange-interface 6 adopts the 16mm steel plate to process, and its requirement on machining accuracy is with reference to oil tank of transformer flange manufacturer's standard.
In concrete realization, the constant voltage condenser of evaporative cooling liquid soaking transformer provided by the invention is the constant voltage condenser of 63MVA/110kv evaporative cooling liquid soaking transformer.
The control pressurer system 2 of constant voltage condenser provided by the invention, its structure is as shown in Figure 2, comprising:
Said pressure sensor 22 is used for monitoring in real time the interior vapour pressure of cavity of said casing; When the steam in the cavity of said casing reaches 20kpa; Pressure sensor 22 sends signal to said electromagnetically operated valve 21, and said electromagnetically operated valve 21 is opened, and deaeration discharges pressure;
When the evaporative cooling liquid soaking transformer in the said casing was in specified operating temperature, said electromagnetically operated valve 21 was opened for several times in start-up phase, after the air in the cavity of said casing is drained, did not restart.
In concrete the realization, pressure sensor 22 is the steam pressure of monitoring box cavity in real time, and when steam pressure reached 20kPa, pressure sensor 22 sent signal to electromagnetically operated valve 21, and electromagnetically operated valve 21 is opened, and pressure is discharged air-out.When the specified operation of evaporative cooling liquid soaking transformer, electromagnetically operated valve 21 is opened for several times in start-up phase, after inner air is drained, will no longer open, and the cavity volume of casing and radiator 4 can guarantee equipment operate as normal (between 0 ~ 20kPa) under lower pressure.
The bore that said electromagnetically operated valve is is the stainless steel electromagnetically operated valve of 80mm; It can guarantee the steam pressure rapid release, and is applicable to any gradation for surface pollution place.
Referring to Fig. 3, be the structural representation of control pressurer system embodiment two.
The control pressurer system that present embodiment provides except comprising pressure sensor 22, electromagnetically operated valve 21, also comprises: pressure relief valve 23;
Said pressure relief valve 23 is used for when the said electromagnetically operated valve 21 normally air-out that breaks down, when the pressure in the cavity of casing above starting behind the 20kpa and when reaching the opening pressure of said pressure relief valve 23, send alarm signal simultaneously.
In concrete the realization, said pressure sensor 23 is the electronic pressure transducer of the vapour pressure in the cavity that can show said casing, and its opening pressure is 35kpa.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (9)
1. the constant voltage condenser of an evaporative cooling liquid soaking transformer comprises: the casing of being made up of upper box and lower box, be loaded on the evaporative cooling liquid immersion type transformer body in the said casing and be loaded on the evaporative cooling medium in the said casing; It is characterized in that; Said constant voltage condenser also comprises: be arranged at the radiator between said upper box and the lower box; When it is used for said evaporative cooling liquid soaking transformer and is in specified operating temperature; The vapour pressure that keeps the vapour pressure in the cavity of said casing, and the steam that produces in the said casing carried out condensation.
2. the constant voltage condenser of evaporative cooling liquid soaking transformer as claimed in claim 1 is characterized in that, the area of dissipation of said cabinets cavity capacity and radiator is directly proportional with the middle loss of said evaporative cooling liquid soaking transformer and dielectric total amount.
3. the constant voltage condenser of evaporative cooling liquid soaking transformer as claimed in claim 2 is characterized in that said radiator remains on 0～20kpa with the vapour pressure in the cavity of said casing.
4. the constant voltage condenser of evaporative cooling liquid soaking transformer as claimed in claim 3 is characterized in that, said constant voltage condenser also comprises: control pressurer system, and it comprises:
Pressure sensor, electromagnetically operated valve;
Said pressure sensor is used for monitoring in real time the interior vapour pressure of cavity of said casing, and when the steam in the cavity of said casing reached 20kpa, pressure sensor sent signal to said electromagnetically operated valve, and said electromagnetically operated valve is opened, and deaeration discharges pressure;
When the evaporative cooling liquid soaking transformer in the said casing was in specified operating temperature, said electromagnetically operated valve was opened for several times in start-up phase, after the air in the cavity of said casing is drained, did not restart.
5. the constant voltage condenser of evaporative cooling liquid soaking transformer as claimed in claim 4 is characterized in that said control pressurer system also comprises: pressure relief valve;
Said pressure relief valve is used for when the said electromagnetically operated valve normally air-out that breaks down, when the pressure in the cavity of casing above starting behind the 20kpa and when reaching the opening pressure of said pressure relief valve, send alarm signal simultaneously.
6. the constant voltage condenser of evaporative cooling liquid soaking transformer as claimed in claim 5 is characterized in that, said pressure sensor is the electronic pressure transducer of the vapour pressure in the cavity that can show said casing;
The bore that said electromagnetically operated valve is is the stainless steel electromagnetically operated valve of 80mm;
The opening pressure of said pressure relief valve is 35kpa.
7. the constant voltage condenser of evaporative cooling liquid soaking transformer as claimed in claim 1 is characterized in that, said constant voltage condenser also comprises: liquid level gauge;
Said liquid level gauge adopts magnetic turnover plate type liquid level gauge; It is used for reflecting in real time the liquid level of the evaporative cooling medium in the said casing; When said casing occurs leaking or fault causes liquid level to reduce, and liquid level sends alarm signal when being reduced to preset alarming value.
8. the constant voltage condenser of evaporative cooling liquid soaking transformer as claimed in claim 7 is characterized in that, said constant voltage condenser also comprises: flange-interface.
9. like the constant voltage condenser of each described evaporative cooling liquid soaking transformer in the claim 1 to 8, it is characterized in that the constant voltage condenser of said evaporative cooling liquid soaking transformer is the constant voltage condenser of 63MVA/110kv evaporative cooling liquid soaking transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103161788A CN102842406A (en) | 2012-08-31 | 2012-08-31 | Constant voltage condenser of evaporative-cooling-liquid-immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103161788A CN102842406A (en) | 2012-08-31 | 2012-08-31 | Constant voltage condenser of evaporative-cooling-liquid-immersed transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102842406A true CN102842406A (en) | 2012-12-26 |
Family
ID=47369676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103161788A Pending CN102842406A (en) | 2012-08-31 | 2012-08-31 | Constant voltage condenser of evaporative-cooling-liquid-immersed transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102842406A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10206307B2 (en) | 2016-05-03 | 2019-02-12 | Bitfury Group Limited | Immersion cooling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961019A (en) * | 1982-09-29 | 1984-04-07 | Mitsubishi Electric Corp | Oil immersed transformer |
| CN1797618A (en) * | 2004-12-30 | 2006-07-05 | 中国科学院电工研究所 | Evaporative cooling traction transformer |
| CN201041765Y (en) * | 2007-05-21 | 2008-03-26 | 深圳奥特迅电气设备有限公司 | Evaporation cooling non uniform phase power transformer |
-
2012
- 2012-08-31 CN CN2012103161788A patent/CN102842406A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961019A (en) * | 1982-09-29 | 1984-04-07 | Mitsubishi Electric Corp | Oil immersed transformer |
| CN1797618A (en) * | 2004-12-30 | 2006-07-05 | 中国科学院电工研究所 | Evaporative cooling traction transformer |
| CN201041765Y (en) * | 2007-05-21 | 2008-03-26 | 深圳奥特迅电气设备有限公司 | Evaporation cooling non uniform phase power transformer |
Non-Patent Citations (1)
| Title |
|---|
| 国家质量监督检验检疫总局特种设备事故调查处理中心: "《特种设备事故应急与调查处理 固定承压类分册》", 31 December 2011 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10206307B2 (en) | 2016-05-03 | 2019-02-12 | Bitfury Group Limited | Immersion cooling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103390485B (en) | A kind of strong cold transformer of liquid nitrogen and refrigerating method thereof | |
| CN207517485U (en) | A kind of natural esters insulating oil distribution transformer | |
| CN106683826B (en) | A kind of oil-immersed transformer of high security | |
| CN201041765Y (en) | Evaporation cooling non uniform phase power transformer | |
| CN101303930B (en) | Non-homogeneous phase type power transformer for evaporative cooling | |
| CN215493866U (en) | Oil-immersed transformer running state monitoring device | |
| CN102842406A (en) | Constant voltage condenser of evaporative-cooling-liquid-immersed transformer | |
| CN104879247A (en) | EGR (Exhaust Gas Recirculation) cooler liquid leakage processing device | |
| CN202196645U (en) | External oil storage cabinet provided with pressure relief valve | |
| CN204680513U (en) | A kind of hermetically sealed oil-immersed type non-crystal alloy transformer | |
| CN203377060U (en) | Liquid nitrogen severe-cold transformer | |
| CN206505796U (en) | A kind of oil-filled transformer of high security | |
| CN201311844Y (en) | Capacitor for ultra-high temperature HID lamp | |
| CN201629503U (en) | Wind power box-type substation | |
| CN106338593A (en) | Maintenance device and method special for transformers | |
| CN1722319A (en) | A kind of oil-immersed power transformer | |
| CN207624503U (en) | Inner oil type metal bellow oil conservator with micro-positive pressure characteristic | |
| CN205211578U (en) | 75MVA transformer of explosion -proof environmental protection | |
| CN203982943U (en) | A kind of liquid immersion type reactor of environmental-protection fireproof | |
| CN206774952U (en) | A kind of heat radiating type ring main unit | |
| CN204088065U (en) | A kind of self-healing electric filtering capacitor | |
| CN102496459A (en) | Power electronic capacitor filled with insulating gas | |
| CN211957362U (en) | Energy-saving and environment-friendly transformer | |
| CN103939877A (en) | Steam heating system | |
| CN202736651U (en) | Vacuum oiling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121226 |