CN204966272U - Pouring device of dry -type transformer coil - Google Patents

Pouring device of dry -type transformer coil Download PDF

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Publication number
CN204966272U
CN204966272U CN201520793871.3U CN201520793871U CN204966272U CN 204966272 U CN204966272 U CN 204966272U CN 201520793871 U CN201520793871 U CN 201520793871U CN 204966272 U CN204966272 U CN 204966272U
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CN
China
Prior art keywords
tank
vacuum
resin
tank body
curing agent
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Expired - Fee Related
Application number
CN201520793871.3U
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Chinese (zh)
Inventor
丁琳
张延峰
孙绪凯
李成章
黄可辛
�乔力
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guo Wang Shandong Feicheng Power Supply Co
State Grid Corp of China SGCC
TaiAn Power Supply Co of State Grid Shandong Electric Power Co Ltd
Original Assignee
Guo Wang Shandong Feicheng Power Supply Co
State Grid Corp of China SGCC
TaiAn Power Supply Co of State Grid Shandong Electric Power Co Ltd
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Application filed by Guo Wang Shandong Feicheng Power Supply Co, State Grid Corp of China SGCC, TaiAn Power Supply Co of State Grid Shandong Electric Power Co Ltd filed Critical Guo Wang Shandong Feicheng Power Supply Co
Priority to CN201520793871.3U priority Critical patent/CN204966272U/en
Application granted granted Critical
Publication of CN204966272U publication Critical patent/CN204966272U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a pouring device of dry -type transformer coil, includes vacuum drying jar, resin degassing tank, curing agent degassing tank, whole jar, mould and the curing oven of mixing. The utility model discloses a pouring equipment can extensively be applicable to each capacity section, various structural style's resin pouring type coil, uses the coil of this equipment processing to have the advantage that the air gap is few, epoxy toughness high, drawing of patterns rate is high, and the partial discharge volume far is less than the national standard regulation, and the experimental puncture rate of power -frequency withstand voltage is less than 1 per mill.

Description

A kind of apparatus for pouring of dry-type transformer coil
Technical field
The utility model relates to transformer manufacture technology, particularly relates to a kind of pouring technology of dry-type transformer coil.
Background technology
Resin casting dry-type transformer is stablized owing to having security of operation, and pollution-free, low noise, the advantage such as non-maintaining, be widely used in all kinds of electricity consumption place.But, current most producer is due to technique Shortcomings, after cast, quality is unstable, often occurs the deficiencies such as air gap is more, resin is mechanical, insulation property are poor, the demoulding is difficult, causes the defective and defective workmanship of the test index such as coil partial discharge quantity, industrial frequency withstand voltage after cast.
Utility model content
In order to solve the problem, particularly in order to improve resin-cast processing quality, solve the defects such as partial discharge quantity is high, power frequency withstand test is defective, the utility model provides a kind of apparatus for pouring of dry-type transformer coil, particularly the apparatus for pouring of following technical scheme:
1, an apparatus for pouring for dry-type transformer coil, is characterized in that, described apparatus for pouring comprises: vacuum drying tank, Resin Degassing tank, curing agent degassing tank, eventually mixed tank and curing oven,
Vacuum drying tank, comprising: for hold the mould that coil is housed hothouse, for vacuum drying tank is heated to the heater of 85-90 DEG C and temperature controller from 75-80 DEG C, is used for the gas extracted out in vacuum drying tank and vacuum degree is maintained pumped vacuum systems and the vacuum governor of 125Pa and be used for being controlled controller drying time at 4 hours drying time;
Resin Degassing tank, comprising: for hold resin tank body, for heat the heater of tank body to 65-75 DEG C and temperature control equipment, for extract gas in tank body out and vacuum degree is maintained 100-200Pa pumped vacuum systems and vacuum governor, be used for stirring the mixing plant of resin in tank body and be used for observing the optical viewing equipment of resin state in tank body;
Curing agent degassing tank, comprising: for hold curing agent tank body, for heat the heater of tank body to 55-60 DEG C and temperature control equipment, for extract gas in tank body out and vacuum degree is maintained 200-400Pa pumped vacuum systems and vacuum governor, be used for stirring the mixing plant of curing agent in tank body and be used for observing the optical viewing equipment of curing agent state in tank body;
Mixed tank eventually, comprise the resin inlet for importing through degassed resin in Resin Degassing tank, for importing the curing agent entrance through degassed curing agent in curing agent degassing tank, for heating heater and the temperature control equipment of tank body to 60-65 DEG C, for extracting gas in tank body out and vacuum degree being maintained pumped vacuum systems and the vacuum governor of 200-400Pa, for stirring in tank body resin and curing agent to form the mixing plant of pour mixture, for controlling the incorporation time controller that incorporation time is 20-30 minute, and for the cast compound in tank body being poured into the apparatus for pouring be equipped with in the mould of coil in vacuum drying tank,
Curing oven, comprises for being moved into by the mould that coil is housed being cast with cast compound in vacuum drying tank and shifting out the mould transfer equipment of curing oven, be used for holding the body of heater of mould, be used for body of heater program being heated to heater and the Time-temperature controller of the highest 150 DEG C in the longest 25 hours;
Wherein, the permissible error of each time above is ± 5%, and the permissible error of each temperature is ± 3%, and the permissible error of each vacuum degree is ± 5%.
2, according to the apparatus for pouring of the described dry-type transformer coil of technical scheme 1, it is characterized in that, described apparatus for pouring also comprises stripper apparatus, and described stripper apparatus comprises the platform for placing mould and covers the heat-insulation layer of mould.
The apparatus for pouring of the described dry-type transformer coil 3, any one of technical scheme 1-2, the permissible error of each time wherein said is ± 3%, and the permissible error of each temperature described is ± 2%, and the permissible error of each vacuum degree described is ± 3%.
Inventor of the present utility model is surprised to find that, if the permissible error of each time is ± 5%, and preferably 3%, more preferably 1%; The permissible error of each temperature is ± 3%, preferably 2%, more preferably 1%; The permissible error of each vacuum degree is ± 5%, preferably 3%, more preferably 1%, what so obtained by pouring procedure of the present utility model will have the advantage that air gap is few, epoxy toughness is high, demolding rate is high, in multiple batches, the average partial discharge quantity of the coil of preparation is much smaller than national regulations, and the rate that on average punctures in power frequency withstand test is less than or equal to 1 ‰.On the contrary, if in cast, the time error of each operation is greater than ± 5%, temperature error is greater than ± 3% and/or vacuum degree error be greater than ± 5% time, described partial discharge quantity meeting and puncture rate and all can raise.
Apparatus for pouring of the present utility model can be widely used in the resin filled type coil of each capacity section, various version, lower to equipment requirement, and critical process requires all can by curve representation, and clear easy grasp, can greatly improve all technical of coil.
Accompanying drawing explanation
Fig. 1 is the structural representation of the apparatus for pouring of dry-type transformer coil of the present utility model.
Embodiment
The exemplary embodiments embodying the utility model feature & benefits will describe in detail in the following description.Be understood that the utility model can have various changes in different embodiments, it neither departs from scope of the present utility model, and explanation wherein and accompanying drawing are the use when explain in itself, and is not used to limit the utility model.
As shown in Figure 1, the apparatus for pouring of dry-type transformer coil of the present utility model, is characterized in that, described apparatus for pouring comprises: vacuum drying tank, Resin Degassing tank, curing agent degassing tank, eventually mixed tank and curing oven,
Vacuum drying tank, comprising: for hold the mould that coil is housed hothouse, for vacuum drying tank is heated to the heater of 85-90 DEG C and temperature controller from 75-80 DEG C, is used for the gas extracted out in vacuum drying tank and vacuum degree is maintained pumped vacuum systems and the vacuum governor of 125Pa and be used for being controlled controller drying time at 4 hours drying time;
Resin Degassing tank, comprising: for hold resin tank body, for heat the heater of tank body to 65-75 DEG C and temperature control equipment, for extract gas in tank body out and vacuum degree is maintained 100-200Pa pumped vacuum systems and vacuum governor, be used for stirring the mixing plant of resin in tank body and be used for observing the optical viewing equipment of resin state in tank body;
Curing agent degassing tank, comprising: for hold curing agent tank body, for heat the heater of tank body to 55-60 DEG C and temperature control equipment, for extract gas in tank body out and vacuum degree is maintained 200-400Pa pumped vacuum systems and vacuum governor, be used for stirring the mixing plant of curing agent in tank body and be used for observing the optical viewing equipment of curing agent state in tank body;
Mixed tank eventually, comprise the resin inlet for importing through degassed resin in Resin Degassing tank, for importing the curing agent entrance through degassed curing agent in curing agent degassing tank, for heating heater and the temperature control equipment of tank body to 60-65 DEG C, for extracting gas in tank body out and vacuum degree being maintained pumped vacuum systems and the vacuum governor of 200-400Pa, for stirring in tank body resin and curing agent to form the mixing plant of pour mixture, for controlling the incorporation time controller that incorporation time is 20-30 minute, and for the cast compound in tank body being poured into the apparatus for pouring be equipped with in the mould of coil in vacuum drying tank,
Curing oven, comprises for being moved into by the mould that coil is housed being cast with cast compound in vacuum drying tank and shifting out the mould transfer equipment of curing oven, be used for holding the body of heater of mould, be used for body of heater program being heated to heater and the Time-temperature controller of the highest 150 DEG C in the longest 25 hours;
Wherein, the permissible error of each time above is ± 5%, and the permissible error of each temperature is ± 3%, and the permissible error of each vacuum degree is ± 5%.Preferably, the permissible error of each time described is ± 3%, and the permissible error of each temperature described is ± 2%, and the permissible error of each vacuum degree described is ± 3%.More preferably, the permissible error of each time described is ± 1%, and the permissible error of each temperature described is ± 1%, and the permissible error of each vacuum degree described is ± 1%.
Described apparatus for pouring also comprises stripper apparatus, and described stripper apparatus comprises the platform for placing mould and covers the heat-insulation layer of mould.
Each heater can be electrically heated rod, electric heating cover, oily heating collar or steam jacket above.Described temperature controller can be electric thermo-couple temperature controller or mercury-wetted contact temperature controller.Each vacuum system can be the vacuum system be made up of vacuum pump, vacuum tube and various control valve.Each time controller can be timer or single-chip microcomputer.Each optical viewing equipment can be the facilities for observation be made up of glass vision panel, observation panel, illuminator, or the facilities for observation be made up of camera or camera lens and display device.Described heat-insulation layer can be thick cotton-wadded quilt.
Utilize apparatus for pouring of the present utility model can pour into a mould according to the pouring procedure of following dry-type transformer coil, described pouring procedure comprises following operation:
100, drying process: the mould that coil is housed is put into vacuum drying tank, the initial temperature vacuumizing initial vacuum drying chamber is not less than 75 DEG C; After starting to vacuumize, the temperature of vacuum drying tank rises to from initial temperature gradually and is not less than 85 DEG C, and in dry run, vacuum degree is not higher than 125Pa, and dry run is no less than 4 hours;
Such as, drying process 100 can be drying process 110: in 1 hour, and the temperature of vacuum drying tank rises to 80 DEG C from initial temperature gradually, and rises to 85 DEG C from 80 DEG C in 4 hours; Meanwhile, the vacuum degree of vacuum drying tank reached 125Pa in 1 hour, and remained on 125Pa in 4 subsequently hour;
Or drying process 100 can be drying process 120: in 1 hour, the temperature of vacuum drying tank rises to 75 DEG C from initial temperature gradually, and rises to 85 DEG C from 75 DEG C in 4 hours; Meanwhile, the vacuum degree of vacuum drying tank reached 100Pa in 1 hour, and remained on 100Pa in 4 subsequently hour;
200, degassing process: resin and curing agent are preheated to temperature respectively and are not less than 65 DEG C, then adds Resin Degassing tank and curing agent degassing tank respectively; Resin stirs in Resin Degassing tank, and temperature remains on 65 DEG C-75 DEG C, and vacuum degree remains on 100-200Pa, until bubble-free produces; Curing agent stirs in curing agent degassing tank, and temperature remains on 55 DEG C-60 DEG C, and vacuum degree remains on 200-400Pa, until bubble-free produces;
Such as, degassing process 200 can be degassing process 210: after resin adds Resin Degassing tank, and in 2 hours, temperature rises to 75 DEG C and vacuum degree reaches 200Pa, is then retained to bubble-free and produces; After curing agent adds curing agent degassing tank, in 4 hours, temperature rises to 60 DEG C and vacuum degree reaches 400Pa, is then retained to bubble-free and produces;
Or degassing process 200 can be degassing process 220: after resin adds Resin Degassing tank, in 2 hours, temperature rises to 70 DEG C and vacuum degree reaches 150Pa, is then retained to bubble-free and produces; After curing agent adds curing agent degassing tank, in 4 hours, temperature rises to 55 DEG C and vacuum degree reaches 300Pa, is then retained to bubble-free and produces;
300, compounding process: the resin after degassed in Resin Degassing tank and curing agent degassing tank and curing agent are imported respectively and is mixed to get pour mixture in mixed tank eventually, mixed tank temperature remains on 60 DEG C-65 DEG C eventually, and vacuum degree remains on 200-400Pa, and incorporation time was no longer than 30 minutes;
Such as, compounding process 300 can be compounding process 310: after resin and curing agent import and mix tank eventually, in 5 minutes, temperature reaches 65 DEG C, then keeps 25 minutes; Meanwhile, mixed tank vacuum degree reached 400Pa in 20 minutes eventually, then kept 10 minutes;
Or compounding process 300 can be compounding process 320: after resin and curing agent import and mix tank eventually, in 5 minutes, temperature reaches 60 DEG C, then keeps 25 minutes; Meanwhile, mixed tank vacuum degree reached 200Pa in 20 minutes eventually, then kept 10 minutes;
400, cast operation: the dried mould that coil is housed the being placed in vacuum drying tank pour mixture of operation 300 being poured into operation 100;
500, curing process: the mould that coil is housed being cast with cast compound of operation 400 is transferred in curing oven and is cured process;
In curing process 500, for the dry-type transformer coil of below 4000kVA capacity, be cured at ambient pressure, solidification heating schedule is: heat and be warming up to 80 DEG C in 30 minutes, 6 hours are incubated at 80 DEG C, heat and be warming up to 90 DEG C from 80 DEG C in 30 minutes, at 90 DEG C, be incubated 4 hours, heat and be warming up to 115 DEG C from 90 DEG C in 30 minutes, 2.5 hours are incubated at 115 DEG C, heat and be warming up to 140 DEG C from 115 DEG C in 30 minutes, at 140 DEG C, be incubated 3.5 hours, total curing time is 18 hours;
In curing process 500, the dry-type transformer coil that 4000kVA is less than or equal to 8000kVA is greater than for capacity, be cured at ambient pressure, solidification heating schedule is: heat and be warming up to 80 DEG C in 30 minutes, 8 hours are incubated at 80 DEG C, heat and be warming up to 90 DEG C from 80 DEG C in 30 minutes, 5.5 hours are incubated at 90 DEG C, heat and be warming up to 115 DEG C from 90 DEG C in 30 minutes, 3.5 hours are incubated at 115 DEG C, heat and be warming up to 140 DEG C from 115 DEG C in 30 minutes, at 140 DEG C, be incubated 4.5 hours, total curing time is 23.5 hours;
600, stripping process: after curing process 500, taken out by mould from curing oven, then takes out the coil through overcuring process from mould;
Such as, stripping process 600 can be stripping process 610: after taking out from mould through the coil of overcuring process, make coil be cooled to room temperature;
Or stripping process 600 can be stripping process 620: before the coil through overcuring process is taken out from mould, mould covers the heat-insulation layers such as such as thick cotton-wadded quilt, then naturally cools to room temperature lentamente;
Wherein the permissible error of each time above is ± 5%, and the permissible error of each temperature is ± 3%.
The raw material adopted in each embodiment is as follows, and its coil is self-control, and all the other raw materials are commercial:
A, coil
The dry-type transformer coil of A1:4000kVA capacity
The dry-type transformer coil of A2:6000kVA capacity
B, resin
B1: bisphenol A type epoxy resin (bisphenol A diglycidyl ether that bisphenol-A and epichlorohydrin reaction generate), commercial
B2: tetrabromobisphenol A type epoxy resin (bisphenol-A diglycidyl ether type epoxy resin that tetrabromobisphenol A and epichlorohydrin reaction generate), commercial
C, curing agent
C1: isomerized methyltetrahydro phthalic anhydride, commercial
C2: isomerization methyl hexahydrophthalic anhydride, commercial
D, flexibilizer
D1: epoxidation anacardol, commercial
D2: polypropylene glycol diglycidyl ether, commercial
E: promoter
E1:2,4,6-tri-(dimethylamino methyl) phenol, commercial
E2: benzyl dimethylamine, commercial
F: control errors level
F1: the permissible error of time is ± 5%, the permissible error of each temperature is ± 3%, the permissible error of each vacuum degree is ± 5%
F2: the permissible error of time is ± 3%, the permissible error of each temperature is ± 2%, the permissible error of each vacuum degree is ± 3%
F3: the permissible error of time is ± 1%, the permissible error of each temperature is ± 1%, the permissible error of each vacuum degree is ± 1%
Embodiment 1-4
The process conditions of embodiment 1-4 are as shown in table 1.
Table 1
In table: the result that local discharging level and industrial frequency withstand voltage puncture rate all obtains according to " National Standard of the People's Republic of China: measurement of partial discharge (GB/T7354-2003/IEC602702000) ".
Can see, when employing drying process 110, degassing process 210/220, compounding process 320 and stripping process 620, other operations comparatively corresponding can obtain better result.
In addition, along with control precision level brings up to F3 from F1, average local discharging level and average industrial frequency withstand voltage puncture rate and decline all to some extent.But owing to also can improve the requirement of equipment and control thereupon, cost and operation easier will rise, and therefore under the prerequisite met the demands, usually can adopt level of control F1 or F2 thereupon.
Embodiment above describes the utility model, but should be appreciated that term used illustrates and exemplary and nonrestrictive term.Specifically can implement in a variety of forms due to the utility model and not depart from spirit of the present utility model or essence, so be to be understood that, above-described embodiment is not limited to any aforesaid details, and explain widely in the spirit and scope that should limit in claim of enclosing, therefore fall into whole change in claim or its equivalent scope and remodeling and all should be claim of enclosing and contained.

Claims (3)

1. an apparatus for pouring for dry-type transformer coil, is characterized in that, described apparatus for pouring comprises: vacuum drying tank, Resin Degassing tank, curing agent degassing tank, eventually mixed tank and curing oven,
Vacuum drying tank, comprising: for hold the mould that coil is housed hothouse, for vacuum drying tank is heated to the heater of 85-90 DEG C and temperature controller from 75-80 DEG C, is used for the gas extracted out in vacuum drying tank and vacuum degree is maintained pumped vacuum systems and the vacuum governor of 125Pa and be used for being controlled controller drying time at 4 hours drying time;
Resin Degassing tank, comprising: for hold resin tank body, for heat the heater of tank body to 65-75 DEG C and temperature control equipment, for extract gas in tank body out and vacuum degree is maintained 100-200Pa pumped vacuum systems and vacuum governor, be used for stirring the mixing plant of resin in tank body and be used for observing the optical viewing equipment of resin state in tank body;
Curing agent degassing tank, comprising: for hold curing agent tank body, for heat the heater of tank body to 55-60 DEG C and temperature control equipment, for extract gas in tank body out and vacuum degree is maintained 200-400Pa pumped vacuum systems and vacuum governor, be used for stirring the mixing plant of curing agent in tank body and be used for observing the optical viewing equipment of curing agent state in tank body;
Mixed tank eventually, comprise the resin inlet for importing through degassed resin in Resin Degassing tank, for importing the curing agent entrance through degassed curing agent in curing agent degassing tank, for heating heater and the temperature control equipment of tank body to 60-65 DEG C, for extracting gas in tank body out and vacuum degree being maintained pumped vacuum systems and the vacuum governor of 200-400Pa, for stirring in tank body resin and curing agent to form the mixing plant of pour mixture, for incorporation time being controlled the incorporation time controller for 20-30 minute, and for the cast compound in tank body being poured into the apparatus for pouring be equipped with in the mould of coil in vacuum drying tank,
Curing oven, comprises for being moved into by the mould that coil is housed being cast with cast compound in vacuum drying tank and shifting out the mould transfer equipment of curing oven, be used for holding the body of heater of mould, be used for body of heater program being heated to heater and the Time-temperature controller of the highest 150 DEG C in the longest 25 hours;
Wherein, the permissible error of each time above is ± 5%, and the permissible error of each temperature is ± 3%, and the permissible error of each vacuum degree is ± 5%.
2. the apparatus for pouring of described dry-type transformer coil according to claim 1, is characterized in that, described apparatus for pouring also comprises stripper apparatus, and described stripper apparatus comprises the platform for placing mould and covers the heat-insulation layer of mould.
3. the apparatus for pouring of described dry-type transformer coil as claimed in one of claims 1-2, the permissible error of each time wherein said is ± 3%, and the permissible error of each temperature described is ± 2%, and the permissible error of each vacuum degree described is ± 3%.
CN201520793871.3U 2015-10-14 2015-10-14 Pouring device of dry -type transformer coil Expired - Fee Related CN204966272U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106816306A (en) * 2017-03-24 2017-06-09 广州供电局有限公司 The pouring technology of reactor winding
CN108247925A (en) * 2017-12-30 2018-07-06 上海辛帕工业自动化有限公司 A kind of novel online perfusion equipment
CN110211804A (en) * 2019-05-14 2019-09-06 安徽博微智能电气有限公司 Coil glue-pouring device and method
CN112164584A (en) * 2020-09-23 2021-01-01 华翔翔能科技股份有限公司 Dry-type transformer pouring tank

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106816306A (en) * 2017-03-24 2017-06-09 广州供电局有限公司 The pouring technology of reactor winding
CN106816306B (en) * 2017-03-24 2019-01-22 广州供电局有限公司 The pouring technology of reactor winding
CN108247925A (en) * 2017-12-30 2018-07-06 上海辛帕工业自动化有限公司 A kind of novel online perfusion equipment
CN110211804A (en) * 2019-05-14 2019-09-06 安徽博微智能电气有限公司 Coil glue-pouring device and method
CN112164584A (en) * 2020-09-23 2021-01-01 华翔翔能科技股份有限公司 Dry-type transformer pouring tank
CN112164584B (en) * 2020-09-23 2022-06-17 华翔翔能科技股份有限公司 Dry-type transformer pouring tank

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