CN209657958U - A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant - Google Patents
A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant Download PDFInfo
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- CN209657958U CN209657958U CN201920744228.XU CN201920744228U CN209657958U CN 209657958 U CN209657958 U CN 209657958U CN 201920744228 U CN201920744228 U CN 201920744228U CN 209657958 U CN209657958 U CN 209657958U
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Abstract
The utility model discloses a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plants, including rectifier transformer part, rectifier part and integral type double loop grease circulating cooling system；The rectifier part is arranged on rectifier transformer part；The integral type double loop grease circulating cooling system includes grease cooling system and water water cooling system；The grease cooling system and water water cooling system are respectively equipped with oil inlet pipe and flowline, water inlet pipe and outlet pipe；The grease cooling system is connected to by oil inlet pipe and flowline with the oil tank of transformer in rectifier transformer part；The water water cooling system connects rectifier part by water inlet pipe and outlet pipe；The grease cooling system and water water cooling system are equipped with the cooling water inlet pipe and cooling water outlet pipe for connecting external cooling water pipeline.The utility model is ingenious in design, practical, can be effectively reduced rectifier transformer device temperature, guarantees that this edge equipment is normal.
Description
Technical field
The utility model belongs to rectifier cooling technology field, is related to a kind of binary channels grease cooling integrated formula energy conservation and environmental protection
Continuous-current plant.
Background technique
With the rapid development of high power semi-conductor technology, the utilization of large-scale rectifier also further extensively, however new is asked
It inscribes also adjoint.Calorific value is very big at work for rectifier transformer and its attached component, once cannot radiate in time, rectifies
Semiconductor components and devices temperature will be more than certain numerical value (international threshold temperature is 125 DEG C), influence its normal work, cause
Blocking voltage decline, also will increase eddy-current loss in cabinet；If long-time hot operation, rectifying component can also be hit by overcurrent
Drilling and blasting is fried, seriously threatens the safety of entire rectifier electric cabinet.The form of single air-cooled or single closed type water cooling multi-purpose at present is to whole
Convertor transformer radiates, and such equipment volume and noise are larger, and radiating mode is single, and heat dissipation effect is bad, can not be to list
A work diode member device radiates, and moisture condensation is easy when work, if pump house or water route are broken down, can all be made
Stop at entire heat radiation cooling device, and such device is not easy to overhaul, and does not meet apparatus and process requirement.
Utility model content
The purpose of this utility model is that in view of the deficiencies of the prior art, proposing a kind of binary channels grease cooling integrated formula section
The environmentally friendly continuous-current plant of energy, device design rationally, have very strong practicability, and grease is crossed when can collude and the cooling of water water is double
The form of pipeline cools down rectifier transformer and its attached diode component, and cooling cooling effect is good, device
Volume and noise are small, are not easy to condense, and are influenced by pump house small, and machine failure outage rate is low, and maintenance is convenient, and it is new to meet the new period
The technique requirement of equipment.
To achieve the goals above, the utility model uses following technical scheme:
A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant, including rectifier transformer part, rectification
Device part and integral type double loop grease circulating cooling system；The rectifier part is arranged on rectifier transformer part；Institute
Stating integral type double loop grease circulating cooling system includes grease cooling system and water water cooling system；The grease cooling system
Equipped with oil inlet pipe and flowline；The water water cooling system is equipped with water inlet pipe and outlet pipe；The grease cooling system by into
Oil pipe and flowline connect rectifier transformer part, and are connected to the oil tank of transformer in the rectifier transformer part, are formed
Closed closed circuit；The water water cooling system connects rectifier part by water inlet pipe and outlet pipe；The grease is cooling
System and water water cooling system are equipped with cooling water inlet pipe and cooling water outlet pipe；The cooling water inlet pipe and cooling water go out
Water pipe is all connected with external cooling water pipeline；
In the rectifier part be equipped with rectifying component and include at least rectifier transformer low-pressure side output terminal,
Several working outputs including rectifier anode output terminal and rectifier negative output terminals；It rectifies described in every group
Radiator and water flowing copper bar are provided on the two sides of component respectively；The one side of of working outputs described in every group is also close to
Equipped with water flowing copper bar identical on rectifying component；The every two groups adjacent radiators and every two groups of adjacent water flowing copper bars
Between be respectively connected with cooling water pipe；The radiator and water flowing copper bar pass through cooling water pipe and are connected with water inlet pipe and outlet pipe,
Closed loop is collectively formed.The oil tank of transformer being equipped in the rectifier transformer part is for containing transformer oil；The oil
Water cooling system and water water cooling system are equipped with heat exchanger, and inside is equipped with circulating coil；The flowline and outlet pipe difference
It is passed through in grease cooling system and water water cooling system, and is in close contact with the circulating coil；The integral type double back road binders
Hydrologic cycle cooling system and water inlet pipe connected to it and outlet pipe inner recirculation flow are connected with circulating cooling liquid；The circulating cooling liquid
Using the high deionized water of resistance value；It is covered on the rectifier transformer part and the outer surface of rectifier part equipped with integral type
The shell of lid；.
As further technological improvement, the water flowing copper bar is internally provided with fluid-through tube road I from side；The fluid-through tube
Fluid-through tube connector I is equipped at the both ends open in road I；Circuit connection hole is additionally provided on the water flowing copper bar；The fluid-through tube
Connector I is connected with cooling water pipe.Circulating cooling liquid is flowed out from the cooling water pipe, and by the fluid-through tube connector I logical
Flowing, takes away rapidly the heat on the water flowing copper bar in liquid pipe road I；The circuit connection hole is used for circuit connection.
As further technological improvement, the radiator includes radiating fin and fluid-through tube road II；The radiating fin
Bottom be equipped with conducting copper plate；The conducting copper plate is close to rectifying component；The fluid-through tube road II passes through radiating fin, and
Fluid-through tube connector II is equipped at both ends；The fluid-through tube connector II is connected with cooling water pipe；The side of the radiator is equipped with spiral shell
Line connector；The radiator is connected through a screw thread part and is fixed on water flowing copper bar.In the conducting copper plate and rectifying component
Between be uniformly coated with heat-conducting silicone grease；Heat on the rectifying component passes to heat dissipation by heat-conducting silicone grease and conducting copper plate
Fin；The coolant liquid flowed in subsequent fluid-through tube road II takes away heat, reduces the temperature of rectifying component.
As further technological improvement, oil pump is equipped on the flowline；Water pump is equipped on the outlet pipe.Institute
It states oil pump and water pump extracts transformer oil and circulating cooling liquid, it is ensured that transformer oil and circulating cooling liquid circulate, and take away heat
Amount.
As further technological improvement, the control system established based on PLC is equipped on the rectifier transformer part；
Temperature sensor is additionally provided in the rectifier transformer part and rectifier part；The temperature sensor, oil pump and water pump
Control system is connected by conventional methods.When the temperature sensor senses device temperature is higher, the control system will
Control oil pump and water pump accelerate work, improve the circulation rate of transformer oil and circulating cooling liquid, accelerate cooling.
Entrance and exit as further technological improvement, in the oil inlet pipe, flowline, water inlet pipe and outlet pipe
Nearby it is equipped with one body surface of temperature and pressure.It can judge whether links pipeline and equipment take just by one body surface of periodic observation temperature and pressure
Often, such as wherein the exit and entrance temperature difference of a pipeline is too small, then can determine whether that the relevant device of this pipeline and connection goes wrong；
Such as wherein the exit and entrance pressure difference of a pipeline is excessive, then there may be blockings for the pipeline and the relevant device of connection, needs
Maintenance in time.
As further technological improvement, dust cover ventilation shades are additionally provided on the rectifier part；Described
Rectifier transformer conservator, loaded switch and rectifier transformer net side input casing are additionally provided on rectifier transformer part.It is described anti-
Dust hood ventilation shades can be with auxiliary heat dissipation；The rectifier transformer conservator, loaded switch and rectifier transformer net side input set
Pipe is rectifier transformer accessory.
Working principle of the utility model is:
External cooling water respectively enters in grease cooling system and water water cooling system from cooling water inlet pipe；Rectifier transformer
The circulating cooling liquid in oil and commutator portion subtube in device some transformers fuel tank passes through flowline and outlet pipe respectively
Into in grease cooling system and water water cooling system, again respectively from oil inlet after carrying out heat exchange cooling with external cooling water
Pipe and water inlet pipe outflow, are passed through in rectifier transformer part and rectifier part；Circulating cooling liquid after cooling passes through cooling water
Pipe flows into radiator and water flowing copper bar, and heat is taken away, and reduces the temperature of rectifying component simultaneously from the two sides of rectifying component
Degree prevents the dew condensation phenomenon generated by two sides temperature unevenness from occurring；The sub- institute of each working outputs is flowed through in circulating cooling liquid
During the water flowing copper bar of connection, the temperature of working outputs is also reduced；Last circulating cooling liquid is again introduced into integral type
It is cooling that heat exchange is carried out in the grease circulating cooling system of double loop, realizes two-way cooling cycle.
The equipment of the utility model passes through the ingehious design of utility model people, by the way of oil, the cooling integral type of water, increases
Strong heat dissipation effect, while have can dissipating by coolant liquid for design simultaneously in the different sides of the big each rectifying component of calorific value
Hot device and water flowing copper bar, greatly enhance heat dissipation effect, avoid rectifying component and generate because two sides temperature difference is excessive
The problem of moisture condensation, occurs, and further protects electrical equipment.Calculate through utility model people in conjunction with practical condition, this is practical new
The heat dissipation effect of type equipment promotes about 20% than existing rectifier transformer radiator, and energy consumption is reduced up to 13%, equipment life
It is obviously improved.The utility model device produces unexpected technical effect, meets the description as described in novelty in Patent Law.
Compared with prior art, the utility model have the utility model has the advantages that
1. the integral type double loop grease circulation that the utility model is made up of grease cooling system and water water cooling system
Cooling system can carry out grease cooling and water water cooling to rectifier transformer part and rectifier work component simultaneously respectively
But, reach excellent cooling effect, it is ensured that rectifier be suitble to temperature under work, reduce equipment circulation magnetic interference, reduce because
Equipment fault caused by temperature is excessively high, damage and energy consumption.
2. the integral type double loop grease circulating cooling system of the utility model is by grease cooling system and water water cooling system
System is combined, and is reduced the volume of equipment, is reduced equipment noise.
3. the utility model sets radiator and water flowing copper bar by tightening to be sticked on the two sides of each working outputs, can
To enhance the heat dissipation effect of working outputs, while being also avoided that rectifying component generates knot because two sides temperature difference is excessive
The problem of dew, occurs, and further protects electrical equipment.
4. the water flowing copper bar of the utility model is internally provided with can be cold recycling by the fluid-through tube road I of circulating cooling liquid
But amount of heat is taken away while liquid passes through, it is ensured that the rectifying component connecting with water flowing copper bar works normally.
5. the utility model is by temperature sensor monitoring device temperature, by control system control oil pump and water pump according to
The work of actual temperature value speed change, not only ensure that cooling effect, also saves the energy.
6. the utility model, can be according to temperature difference and pressure by the way that one body surface of temperature and pressure is arranged on oil circuit and waterway pipe
Difference judges the case where equipment is with the presence or absence of failure or blocking, convenient to carry out maintenance maintenance in time.
Detailed description of the invention
Fig. 1 is present apparatus positive structure schematic.
Fig. 2 is integral type double loop grease circulating cooling system structural schematic diagram.
Fig. 3 is water flowing structure of copper bar schematic diagram.
Fig. 4 is radiator and rectifying component installation site structural schematic diagram.
Appended drawing reference: 1- rectifier transformer part, 2- rectifier part, 3- integral type double loop grease circulating cooling system
System, 4- grease cooling system, 5- water water cooling system, 6- oil inlet pipe, 7- flowline, 8- water inlet pipe, 9- outlet pipe, 10- rectification
Component, 11- rectifier transformer low-pressure side output terminal, 12- rectifier anode output terminal, 13- rectifier cathode output end
Son, 14- radiator, 15- water flowing copper bar, 16- cooling water pipe, 17- oil pump, 18- water pump, 19- cooling water inlet pipe, 20- are cooling
Water outlet pipe, 21- fluid-through tube road I, 22- fluid-through tube connector I, 23- circuit connection hole, one body surface of 24- temperature and pressure, 25- dust cover are logical
Wind blind window, 26- rectifier transformer conservator, 27- loaded switch, 28- radiating fin, 29- fluid-through tube road, 30- conducting copper plate,
31- fluid-through tube connector II, 32- threaded connector.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
Embodiment 1:
As shown in Figure 1-3, a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant, including rectifier transformer
Device part 1, rectifier part 2 and integral type double loop grease circulating cooling system 3；The setting of rectifier part 2 is rectifying
In transformer portion 1；The integral type double loop grease circulating cooling system 3 includes grease cooling system 4 and water water cooling system
System 5；The grease cooling system 4 is equipped with oil inlet pipe 6 and flowline 7；The water water cooling system 5 is equipped with water inlet pipe 8 and water outlet
Pipe 9；The grease cooling system 4 connects rectifier transformer part 1 by oil inlet pipe 6 and flowline 7, and with the rectifier transformer
Oil tank of transformer connection in device part 1, forms closed closed circuit；The water water cooling system 5 is by water inlet pipe 8 and goes out
Water pipe 9 connects rectifier part 2；The grease cooling system 4 and water water cooling system 5 are equipped with cooling water inlet pipe 19 and cold
But water outlet pipe 20；The cooling water inlet pipe 19 and cooling water outlet pipe 20 are all connected with external cooling water pipeline；
It is equipped with rectifying component 10 in the rectifier part 2 and includes at least rectifier transformer low-pressure side output end
Several working outputs including son 11, rectifier anode output terminal 12 and rectifier negative output terminals 13；Every
It is provided with radiator 14 and water flowing copper bar 15 respectively on the two sides of the group rectifying component 10；Work output described in every group
The one side of terminal is also close to be equipped with and water flowing copper bar 15 identical on rectifying component 10；The every two groups adjacent radiators 14
And cooling water pipe 16 is respectively connected between every two groups of adjacent water flowing copper bars 15；The radiator 14 and water flowing copper bar 15 are logical
Supercooling water pipe is connected with water inlet pipe 8 and outlet pipe 9, and closed loop is collectively formed.The grease cooling system 4 and water water are cooling
System 5 is equipped with heat exchanger, and inside is equipped with circulating coil；The flowline 7 and outlet pipe 9 each lead into grease cooling system 4
And in water water cooling system 5, and contacted with the circulating coil；The integral type double loop grease circulating cooling system 3 and with
Its water inlet pipe 8 connected and 9 inner recirculation flow of outlet pipe have circulating cooling liquid；The circulating cooling liquid using resistance value it is high go from
Sub- water.
The water flowing copper bar 15 is internally provided with fluid-through tube road I 21 from side；At the both ends open in the fluid-through tube road I 21
It is equipped with fluid-through tube connector I 22；Circuit connection hole 23 is additionally provided on the water flowing copper bar 15；The fluid-through tube connector I 22 with
Cooling water pipe 16 is connected.Circulating cooling liquid is flowed out from the cooling water pipe 16, and by the fluid-through tube connector I 22 in logical liquid
Flowing, takes away rapidly the heat on the water flowing copper bar 15 in pipeline I 21；The circuit connection hole 23 is used for circuit connection.
The radiator 14 includes radiating fin 28 and fluid-through tube road II 29；The bottom of the radiating fin 28 is equipped with thermally conductive
Copper sheet 30；The conducting copper plate 30 is close to rectifying component 10；The fluid-through tube road II 29 passes through radiating fin 28, and two
End is equipped with fluid-through tube connector II 31；The fluid-through tube connector II 31 is connected with cooling water pipe 16；The side of the radiator 14 is set
There is threaded connector 32；The radiator 14 is connected through a screw thread part 32 and is fixed on water flowing copper bar 15.In the conducting copper plate
Heat-conducting silicone grease is uniformly coated between 30 and rectifying component 10；Heat on the rectifying component 10 by heat-conducting silicone grease and
Conducting copper plate 30 passes to radiating fin 28；The coolant liquid flowed in subsequent fluid-through tube road II 29 takes away heat, makes to rectify
The temperature of component 10 reduces.
Oil pump 17 is equipped on the flowline 7；Water pump 18 is equipped on the outlet pipe 9.The oil pump 17 and water pump
18 extract transformer oil and circulating cooling liquid, it is ensured that transformer oil and circulating cooling liquid circulate, and take away heat.
Dust cover ventilation shades 25 are additionally provided on the rectifier part 2；On the rectifier transformer part 1 also
Casing is inputted equipped with rectifier transformer conservator 26, loaded switch 27 and rectifier transformer net side.The dust cover ventilation shades
25 can be with auxiliary heat dissipation；The rectifier transformer conservator 26, loaded switch 27 and rectifier transformer net side input casing are whole
Convertor transformer accessory.
Embodiment 2:
The present embodiment the difference from embodiment 1 is that: be equipped on the rectifier transformer part 1 and established based on PLC
Control system；Temperature sensor is additionally provided in the rectifier transformer part 1 and rectifier part 2；The temperature sensor,
Oil pump 17 and water pump 18 connect control system by conventional methods.When the temperature sensor senses device temperature is higher,
Control oil pump 17 and water pump 18 are accelerated work by the control system, improve the circulation rate of transformer oil and circulating cooling liquid,
Accelerate cooling.
The application method of the present embodiment is same as Example 1.
Embodiment 3:
The present embodiment the difference from example 2 is that: in the oil inlet pipe 6, flowline 7, water inlet pipe 8 and outlet pipe 9
Entrance and exit are nearby equipped with one body surface 24 of temperature and pressure.Links pipeline can be judged by one body surface 24 of periodic observation temperature and pressure
And whether equipment takes normally, such as wherein the exit and entrance temperature difference of a pipeline is too small, then can determine whether the phase of this pipeline and connection
Equipment is closed to go wrong；Such as wherein the exit and entrance pressure difference of a pipeline is excessive, then the pipeline and the relevant device of connection
There may be blockings, need to overhaul in time.
The application method of the present embodiment is same as Example 1.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (7)
1. a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant, including rectifier transformer part (1), rectification
Device part (2) and integral type double loop grease circulating cooling system (3)；It is characterized by: rectifier part (2) setting exists
On rectifier transformer part (1)；The integral type double loop grease circulating cooling system (3) include grease cooling system (4) and
Water water cooling system (5)；The grease cooling system (4) is equipped with oil inlet pipe (6) and flowline (7)；The water water cooling system
(5) water inlet pipe (8) and outlet pipe (9) are equipped with；The grease cooling system (4) is connected whole by oil inlet pipe (6) and flowline (7)
Convertor transformer part (1), and be connected to the oil tank of transformer in the rectifier transformer part (1), it forms closed closure and returns
Road；The water water cooling system (5) passes through water inlet pipe (8) and outlet pipe (9) connection rectifier part (2)；The grease is cooling
System (4) and water water cooling system (5) are equipped with cooling water inlet pipe (19) and cooling water outlet pipe (20)；The cooling water into
Water pipe (19) and cooling water outlet pipe (20) are all connected with external cooling water pipeline；
It is equipped with rectifying component (10) in the rectifier part (2) and includes at least rectifier transformer low-pressure side output end
Several working outputs including sub (11), rectifier anode output terminal (12) and rectifier negative output terminals (13)
Son；It is provided with radiator (14) and water flowing copper bar (15) respectively on the two sides of the rectifying component (10) described in every group；Often
The one side of group working outputs is also close to be equipped with and water flowing copper bar (15) identical on rectifying component (10)；Every two groups
Cooling water pipe (16) are respectively connected between the adjacent radiator (14) and every two groups of adjacent water flowing copper bars (15)；It is described to dissipate
Hot device (14) and water flowing copper bar (15) are connected by cooling water pipe (16) with water inlet pipe (8) and outlet pipe (9), are collectively formed close
Loop circuit.
2. a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant according to claim 1, feature
Be: the water flowing copper bar (15) is internally provided with fluid-through tube road I (21) from side；It opens at the both ends of the fluid-through tube road I (21)
Fluid-through tube connector I (22) is equipped at mouthful；Circuit connection hole (23) are additionally provided on the water flowing copper bar (15)；The fluid-through tube
Connector I (22) is connected with cooling water pipe (16).
3. a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant according to claim 1, feature
Be: the radiator (14) includes radiating fin (28) and fluid-through tube road II (29)；The bottom of the radiating fin (28) is set
There are conducting copper plate (30)；The conducting copper plate (30) is close to rectifying component (10)；The fluid-through tube road II (29), which passes through, to be dissipated
Hot fin (28), and fluid-through tube connector II (31) is equipped at both ends；The fluid-through tube connector II (31) and cooling water pipe (16) phase
Even；The side of the radiator (14) is equipped with threaded connector (32)；It is solid that the radiator (14) is connected through a screw thread part (32)
It is scheduled on water flowing copper bar (15).
4. a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant according to claim 1, feature
It is: is equipped with oil pump (17) on the flowline (7)；Water pump (18) are equipped on the outlet pipe (9).
5. a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant according to claim 3, feature
It is: is equipped with the control system established based on PLC on the rectifier transformer part (1)；In the rectifier transformer part
(1) and in rectifier part (2) it is additionally provided with temperature sensor；The temperature sensor, oil pump (17) and water pump (18) pass through
Usual manner connects control system.
6. a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant according to claim 1, feature
It is: is equipped with temperature near the entrance of the oil inlet pipe (6), flowline (7), water inlet pipe (8) and outlet pipe (9) and exit
Press a body surface (24).
7. a kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant according to claim 1, feature
It is: is additionally provided with dust cover ventilation shades (25) on the rectifier part (2)；In the rectifier transformer part (1)
On be additionally provided with rectifier transformer conservator (26), loaded switch (27) and rectifier transformer net side input casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744228.XU CN209657958U (en) | 2019-05-23 | 2019-05-23 | A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920744228.XU CN209657958U (en) | 2019-05-23 | 2019-05-23 | A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209657958U true CN209657958U (en) | 2019-11-19 |
Family
ID=68530493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920744228.XU Active CN209657958U (en) | 2019-05-23 | 2019-05-23 | A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant |
Country Status (1)
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| CN (1) | CN209657958U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110047644A (en) * | 2019-05-23 | 2019-07-23 | 龙国剑 | A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant |
| CN111627666A (en) * | 2020-06-28 | 2020-09-04 | 童孝俊 | Capsule type transformer conservator |
-
2019
- 2019-05-23 CN CN201920744228.XU patent/CN209657958U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110047644A (en) * | 2019-05-23 | 2019-07-23 | 龙国剑 | A kind of binary channels grease cooling integrated formula energy conservation and environmental protection continuous-current plant |
| CN111627666A (en) * | 2020-06-28 | 2020-09-04 | 童孝俊 | Capsule type transformer conservator |
| CN111627666B (en) * | 2020-06-28 | 2021-05-11 | 湖南一开正泰成套电器有限公司 | Capsule type transformer conservator |
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