CN204567626U - A kind of automobile drum brake spraying temp. lowering apparatus - Google Patents
A kind of automobile drum brake spraying temp. lowering apparatus Download PDFInfo
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- CN204567626U CN204567626U CN201520247742.4U CN201520247742U CN204567626U CN 204567626 U CN204567626 U CN 204567626U CN 201520247742 U CN201520247742 U CN 201520247742U CN 204567626 U CN204567626 U CN 204567626U
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Abstract
The utility model discloses a kind of automobile drum brake spraying temp. lowering apparatus, comprise reserve tank, multiple electric spraying device being laid in each drum brake mechanism week side respectively, multiple electric spraying device is carried out to the first controller of switch control rule, multiple respectively to the temperature detecting unit that each drum brake mechanism surface temperature detects, by the liquid distributor that water-main connects with reserve tank, multiple branch's water-supply-pipe be connected on many liquid outlets of liquid distributor, the electric adjustable press mechanism that the fluid pressure of liquid distributor inlet is regulated and multiple respectively to the signal detecting unit that the fluid pressure of each liquid outlet of liquid distributor detects, signal detecting unit and electric adjustable press mechanism are all electrically connected with second controller.The utility model structure simple, reasonable in design and use easy and simple to handle, result of use good, can carry out effective cooling to automobile drum brake, and can control spray flux, water-saving result is good, is conducive to improving automobile operation grade and vehicle performance.
Description
Technical field
The utility model relates to a kind of spraying temp. lowering apparatus, especially relates to a kind of automobile drum brake spraying temp. lowering apparatus.
Background technology
Car brake refers to the parts producing the power (i.e. braking force) hindering vehicle movement or movement tendency, can be divided into drum-type and the large class of disc type two.Wherein, drum brake mechanism utilizes brake transmission mechanism that brake strip is pressed on inside brake wheel by brake shoe brake cheek, thus produce braking force, makes wheel decelerates as required or stop in the shortest distance, to guarantee traffic safety.China's mountain and hill accounts for 43% of territory total area, and natural conditions are complicated and large by ecology environment restriction, and unavoidably there is the particular difficulty section on engineering significance, corresponding mountain highway exists more continuous long downslope.At present, what the big-and-middle-sized lorry running brake of China mainly adopted is drum brake mechanism.Drum brake mechanism compared with plate disc brake, Shortcomings in heat radiation.The casualty statistics data analysis in the long and steep downgrade section that some accidents are occurred frequently shows, although road technical index meets design regulation, but still accident is occurred frequently, and accident causation mainly with big-and-middle-sized lorry because drum brake mechanism heat fade causes braking failure to be main.Study carefully its cause, except Overload Factors, also lack auxiliary braking or drg cooling mechanism nothing more than in long and steep downgrade process simultaneously.
Propose in the national standard " self-propelled vehicle safe and technical specification " (GB7258-2012) of up-to-date revision, total mass is greater than to 12000kg, mainly at the lorry that mountain road travels, should be equipped with retarder or other complemental brake system; For hazardous material transportation car, no matter total mass size, when mountain road travels, all requires assembling retarder or other complemental brake system.By investigating the driving behavior of a large amount of goods vehicle driver, in the continuous lower long slope process of reality, if utilize Jake brake or energy brake, consider to improve transport benefits aspect for minimizing vehicle abrasion and reduction time of run, when chaufeur subjectivity think will vehicle brake efficacy be caused to lose efficacy because of brake-fade, the mode that most of chaufeur adopts utilizes higher gear as far as possible but not shift to a lower speed traveling descending, reduced the brake temperature risen because frequently utilizing drg to participate in assistance automobile control speed braking by liquid distribution simultaneously, partially or completely to recover vehicle brake efficacy.In addition consider that the running brake that more frequently utilizes that the most of lorry of China causes because of the overload of outwardness in various degree carries out the braking of descending control speed, the actual thermal load of bearing of drg is larger, and the application of such trickle cooling method is more general.
At present, the trickle heat sink of automobile drum brake mainly contains gravity type boat davit and vapour-pressure type two kinds.Wherein, gravity type boat davit trickle heat sink utilizes the Large Copacity tank being arranged on compartment eminence, by feed line and manually actuated control valve, cooling water expansion tank is made to lean on the pressure current of self gravitation to the drenching sprayer be distributed near each drg from tank, by cool water shower to brake wheel outside face, by the heat absorption intensification evaporation of water, brake wheel is lowered the temperature, reach the object partially or completely recovering vehicle brake efficacy.Vapour-pressure type trickle heat sink is then utilize the pressurized air in air tank to connect by pressure regulating valve and baroswitch valve the tank being installed on appropriate position before and after the air tank of vehicle frame both sides, and the capacity of tank needs according to arrangement space size and user and determines; Baroswitch valve needs when tank feeds water to cut out, and disconnects gas circuit; The air pressure that pressurized air is set by pressure regulating valve pressurizes from spraying water tank top to the cooling water expansion tank spraying water tank, is realized the cooling of each wheel braking drum trickle by the pipeline drenching sprayer connected near each drg.
Though above-mentioned two kinds of traditional spraying ventilating devices exist, structure is simple, acquisition cost not advantages of higher, also there is many defects and deficiency simultaneously, is mainly reflected in the following aspects: the first, spray flux can not effectively control, and water-saving result is poor; The second, need the tank installing larger capacity to use needs with satisfied reality, thus obviously increase the curb mass of automobile, reduce the mounted mass of automobile, automobile operation grade and vehicle performance are deteriorated; Three, employing uninterruptedly sprays mode, and a large amount of cooling water expansion tank can finally fall earthward, and reduces road surface attachment condition, especially also may cause icy on road for north of china in winter, have a strong impact on vehicular traffic safety traffic; Meanwhile, easily cause brake wheel owing to suddenly cooling the crackle of generation or breaking, affect vehicle brake efficacy, even make automobile lose deceleration and stopping performance.To sum up, nowadays a kind of structure is lacked simple, reasonable in design and use easy and simple to handle, that result of use is good automobile drum brake spraying temp. lowering apparatus, effective cooling can be carried out to automobile drum brake, and can control effectively to spray flux, water-saving result is good, and the capacity of required tank is less.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of automobile drum brake spraying temp. lowering apparatus is provided, its structure simple, reasonable in design and use easy and simple to handle, result of use good, effective cooling can be carried out to automobile drum brake, and can control effectively to spray flux, water-saving result is good, and the capacity of required tank is less.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of automobile drum brake spraying temp. lowering apparatus, it is characterized in that: comprise the reserve tank be arranged on car body, multiple electric spraying device being laid in all sides of multiple drum brake mechanisms that automobile is installed respectively, multiple described electric spraying device is carried out to the first controller of switch control rule, multiple temperature detecting unit respectively surface temperature of multiple described drum brake mechanism being carried out to detect in real time, by the liquid distributor that water-main connects with the water outlet of reserve tank, multiple branch's water-supply-pipe be connected between multiple described electric spraying device and multiple liquid outlets of liquid distributor, the electric adjustable press mechanism that the fluid pressure of the inlet of liquid distributor is regulated and multiple signal detecting unit respectively fluid pressure of the multiple described liquid outlet of liquid distributor being carried out to detect in real time, described temperature detecting unit, electric spraying device is all identical with the quantity of described drum brake mechanism with the quantity of signal detecting unit, the inlet of described liquid distributor is connected with the water outlet of reserve tank by water-main, multiple described temperature detecting unit is all electrically connected with the first controller, and multiple described electric spraying device controls by the first controller, and multiple described electric spraying device is all electrically connected with the first controller, described water-main is equipped with water pump, and described electric adjustable press mechanism is undertaken controlling by second controller and it is electrically connected with second controller, and multiple described signal detecting unit is all electrically connected with second controller.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, is characterized in that: described water pump is motor-drive pump and it is controlled by second controller, and water pump is electrically connected with second controller.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, is characterized in that: described electric adjustable press mechanism is pressure regulating valve or pressure regulating valve group;
Described pressure regulating valve is electric control valve and it is arranged on water-main or is arranged on the junction between the inlet of liquid distributor and water-main, and described pressure regulating valve is undertaken controlling by second controller and it is electrically connected with second controller;
Described pressure regulating valve group is made up of a reducing valve, an electromagnetic switch valve and a non-return valve, described reducing valve, described switch valve and described non-return valve are motorized valve and three is installed on water-main or is installed in the junction between the inlet of liquid distributor and water-main, and described reducing valve, described electromagnetic switch valve and described non-return valve are undertaken controlling by second controller and three is all electrically connected with second controller.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, it is characterized in that: also comprise parameter input unit and display unit, described parameter input unit and display unit are all electrically connected with the first controller and second controller.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, it is characterized in that: also comprise control box and be laid in the electronic circuit board in described control box, described first controller and second controller are all laid on described electronic circuit board, and described parameter input unit and display unit are all laid on the lateral wall of described control box.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, is characterized in that: also comprise the timekeeping circuit be electrically connected with the first controller, described control box is laid in the operator's compartment of automobile.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, is characterized in that: also comprise the limiting valve that a fluid pressure to the inlet of liquid distributor carries out pressure limiting.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, it is characterized in that: described limiting valve is arranged on water-main or is arranged on the junction between the inlet of liquid distributor and water-main, described limiting valve is motorized valve and it is controlled by second controller, and described limiting valve is electrically connected with second controller.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, is characterized in that: described signal detecting cellular installation is on branch's water-supply-pipe or the junction be arranged between branch's water-supply-pipe and the liquid outlet of liquid distributor.
Above-mentioned a kind of automobile drum brake spraying temp. lowering apparatus, is characterized in that: described water pump is plunger pump.
The utility model compared with prior art has the following advantages:
1, structure is simple, reasonable in design and input cost is lower, install lay convenient.
2, use easy and simple to handle and result of use good, while the on off state of electric spraying device and switching time being controlled according to temperature detecting unit institute Detection Information, according to the fluid pressure at each liquid outlet place of liquid distributor, and realize Stress control by controlling electric adjustable press mechanism, thus realize temperature and control to combine with Stress control the object that spray flux is control effectively, water-saving result is good, the capacity of required tank is less, would not obviously increase automobile curb mass mutually, but significantly improve automobile mounted mass, improve automobile operation grade; Simultaneously, adopt and be interrupted spray mode, water consumption reduces, the cooling water inflow flowing to ground is few, especially road pavement attachment condition can not affect greatly and can not road pavement attachment condition affect greatly in the winter time, and because injection flow rate and spray time are effectively controlled, make brake wheel not easily occur crackle because suddenly cooling generation or break.In actual use procedure, also control by controlling the fluid pressure of water pump to liquid distributor inlet place.
In sum, the utility model structure is simple, reasonable in design and use easy and simple to handle, that result of use is good automobile drum brake spraying temp. lowering apparatus, effective cooling can be carried out to automobile drum brake, and can control effectively to spray flux, water-saving result is good, the capacity of required tank is less, can obviously improve automobile operation grade and vehicle performance.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is hydraulic tubing connection diagram of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Description of reference numerals:
1-reserve tank; 2-electric spraying device; 3-the first controller;
4-temperature detecting unit; 5-water-main; 6-branch water-supply-pipe;
7-water pump; 8-electric adjustable press mechanism; 9-signal detecting unit;
10-second controller; 11-parameter input unit; 12-display unit;
13-timekeeping circuit; 15-limiting valve; 16-liquid distributor.
Detailed description of the invention
As Fig. 1, shown in Fig. 2, the utility model comprises the reserve tank 1 be arranged on car body, multiple electric spraying device 2 being laid in all sides of multiple drum brake mechanisms that automobile is installed respectively, multiple described electric spraying device 2 is carried out to the first controller 3 of switch control rule, multiple temperature detecting unit 4 respectively surface temperature of multiple described drum brake mechanism being carried out to detect in real time, by the liquid distributor 16 that water-main 5 connects with the water outlet of reserve tank 1, multiple branch's water-supply-pipe 6 be connected between multiple described electric spraying device 2 and multiple liquid outlets of liquid distributor 16, the electric adjustable press mechanism 8 that the fluid pressure of the inlet of liquid distributor 16 is regulated and multiple signal detecting unit 9 respectively fluid pressure of the multiple described liquid outlet of liquid distributor 16 being carried out to detect in real time, described temperature detecting unit 4, electric spraying device 2 is all identical with the quantity of described drum brake mechanism with the quantity of signal detecting unit 9, the inlet of described liquid distributor 16 is connected by the water outlet of water-main 5 with reserve tank 1.Multiple described temperature detecting unit 4 is all electrically connected with the first controller 3, and multiple described electric spraying device 2 controls by the first controller 3, and multiple described electric spraying device 2 is all electrically connected with the first controller 3.Described water-main 5 is equipped with water pump 7, and described electric adjustable press mechanism is undertaken controlling by second controller 10 and it is electrically connected with second controller 10, and multiple described signal detecting unit 9 is all electrically connected with second controller 10.
In the present embodiment, described water pump 7 is motor-drive pump and it is controlled by second controller 10, and water pump 7 is electrically connected with second controller 10.
During actual use, controlled by second controller 10 pairs of water pumps 7.
In the present embodiment, described water pump 7 is plunger pump.During actual use, described water pump 7 also can adopt the Hydraulic Pump of other types.
In the present embodiment, described electric adjustable press mechanism 8 is pressure regulating valve or pressure regulating valve group.
Described pressure regulating valve is electric control valve and it is arranged on water-main 5 or the junction be arranged between the inlet of liquid distributor 16 and water-main 5, and described pressure regulating valve is undertaken controlling by second controller 10 and it is electrically connected with second controller 10.
Described pressure regulating valve group is made up of a reducing valve, an electromagnetic switch valve and a non-return valve, described reducing valve, described switch valve and described non-return valve are motorized valve and three is installed on water-main 5 or the junction be installed between the inlet of liquid distributor 16 and water-main 5, and described reducing valve, described electromagnetic switch valve and described non-return valve are undertaken controlling by second controller 10 and three is all electrically connected with second controller 10.
In the present embodiment, described electric adjustable press mechanism 8 is arranged on water-main 5, and electric adjustable press mechanism 8 is installed near the inlet of liquid distributor 16.
In actual use procedure, can according to specific needs, the installation site of electric adjustable press mechanism 8 be adjusted accordingly.
In the present embodiment, described signal detecting unit 9 is pressure sensor.
During actual installation, described signal detecting unit 9 is arranged on branch's water-supply-pipe 6 or is arranged on the junction between the liquid outlet of branch's water-supply-pipe 6 and liquid distributor 16.
In the present embodiment, multiple described signal detecting unit 9 is arranged on multiple described branches water-supply-pipe 6 respectively, and multiple described signal detecting unit 9 is installed near multiple liquid outlets of liquid distributor 16 respectively.In actual use procedure, can according to specific needs, the installation site of multiple described signal detecting unit 9 be adjusted accordingly.
Meanwhile, the utility model also comprises parameter input unit 11 and display unit 12, and described parameter input unit 11 and display unit 12 are all electrically connected with the first controller 3 and second controller 10.
In the present embodiment, the utility model also comprises control box and is laid in the electronic circuit board in described control box, described first controller 3 and second controller 10 are all laid on described electronic circuit board, and described parameter input unit 11 and display unit 12 are all laid on the lateral wall of described control box.
When actual laying is installed, described control box is laid in the operator's compartment of automobile.
In the present embodiment, the utility model also comprises the timekeeping circuit 13 be electrically connected with the first controller 3, carries out record by the spray cooling time of timekeeping circuit 13 to each electric spraying device 2.Further, described timekeeping circuit 13 is laid on described electronic circuit board.
Meanwhile, the utility model also comprises the limiting valve 15 that a fluid pressure to the inlet of liquid distributor 16 carries out pressure limiting.
During actual installation, described limiting valve 15 is arranged on water-main 5 or the junction be arranged between the inlet of liquid distributor 16 and water-main 5, described limiting valve 15 is motorized valve and it is controlled by second controller 10, and described limiting valve 15 is electrically connected with second controller 10.
In the present embodiment, described limiting valve 15 is arranged on water-main 5, and limiting valve 15 is installed near the inlet of liquid distributor 16.In actual use procedure, can according to specific needs, the installation site of limiting valve 15 be adjusted accordingly.
In actual use procedure, detected in real time by the surface temperature of multiple described temperature detecting units 4 to each drum brake mechanism, and by detected temperature information synchronous driving to the first controller 3, the temperature that first controller 3 detects according to multiple described temperature detecting unit 4, and combine the temperature threshold preset, when detecting that the surface temperature of any one drum brake mechanism is greater than the temperature threshold preset, open multiple described electric spraying device 2 and synchronously spray cooling is carried out to each drum brake mechanism, when the surface temperature of all drum brake mechanisms is all lower than the temperature threshold preset, control multiple described electric spraying device 2 to close, simultaneously, detected in real time by the fluid pressure at each liquid outlet place of multiple signal detecting unit 9 pairs of liquid distributors 16, and by institute's Detection Information synchronous driving to second controller 10, the fluid pressure that second controller 10 detects according to signal detecting unit 9, and in conjunction with pressure set points, electric adjustable press mechanism 8 is controlled, makes the fluid pressure at the inlet place of liquid distributor 16 maintain this pressure set points, meanwhile, by limiting valve 15, what make the fluid pressure of liquid distributor 16 inlet be no more than limiting valve 15 pre-sets force value.
As shown in the above, adopt the utility model can control effectively to the spray flux of each electric spraying device 2, reach water saving object, and the temperature that the on off state of each electric spraying device 2 and switching time are detected according to multiple described temperature detecting unit 4 by the first controller 3 controls, what thus adopt is be interrupted spray mode, only carries out spray cooling in drum brake mechanism surface temperature higher than during the temperature threshold preset.Simultaneously, by controlling the fluid pressure in electric adjustable press mechanism adjustment water-main 5, making the fluid pressure of each liquid outlet of liquid distributor 16 maintain pressure set points all the time, realizing the object control effectively by controlling the spray flux of fluid pressure to each electric spraying device 2.
Actual when using, input the above-mentioned temperature threshold that presets and pressure set points by parameter input unit 11, and the temperature threshold preset and pressure set points adjustment easy.In actual use procedure, the information detected by display unit 12 pairs of signal detecting unit 9 and each temperature detecting unit 4 carries out simultaneous display, the information that chaufeur also can detect according to signal detecting unit 9 and each temperature detecting unit 4, manual control is carried out to electric adjustable press mechanism and each electric spraying device 2, practical operation is very easy, and occupation mode is flexible.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. an automobile drum brake spraying temp. lowering apparatus, it is characterized in that: comprise the reserve tank (1) be arranged on car body, multiple electric spraying device (2) being laid in all sides of multiple drum brake mechanisms that automobile is installed respectively, multiple described electric spraying device (2) is carried out to first controller (3) of switch control rule, multiple temperature detecting unit (4) respectively the surface temperature of multiple described drum brake mechanism being carried out to detect in real time, by the liquid distributor (16) that water-main (5) connects with the water outlet of reserve tank (1), multiple branch's water-supply-pipe (6) be connected between multiple described electric spraying device (2) and multiple liquid outlets of liquid distributor (16), the electric adjustable press mechanism (8) that the fluid pressure of the inlet of liquid distributor (16) is regulated and multiple signal detecting unit (9) respectively the fluid pressure of the multiple described liquid outlet of liquid distributor (16) being carried out to detect in real time, described temperature detecting unit (4), electric spraying device (2) is all identical with the quantity of described drum brake mechanism with the quantity of signal detecting unit (9), the inlet of described liquid distributor (16) is connected by the water outlet of water-main (5) with reserve tank (1), multiple described temperature detecting unit (4) is all electrically connected with the first controller (3), multiple described electric spraying device (2) controls by the first controller (3), and multiple described electric spraying device (2) is all electrically connected with the first controller (3), water pump (7) described water-main (5) is equipped with, described electric adjustable press mechanism is undertaken controlling by second controller (10) and it is electrically connected with second controller (10), and multiple described signal detecting unit (9) is all electrically connected with second controller (10).
2. according to a kind of automobile drum brake spraying temp. lowering apparatus according to claim 1, it is characterized in that: described water pump (7) for motor-drive pump and its controlled by second controller (10), water pump (7) is electrically connected with second controller (10).
3. according to a kind of automobile drum brake spraying temp. lowering apparatus described in claim 1 or 2, it is characterized in that: described electric adjustable press mechanism (8) is pressure regulating valve or pressure regulating valve group;
Described pressure regulating valve is electric control valve and it is arranged on the junction that water-main (5) is upper or be arranged between the inlet of liquid distributor (16) and water-main (5), and described pressure regulating valve is undertaken controlling by second controller (10) and it is electrically connected with second controller (10);
Described pressure regulating valve group is made up of a reducing valve, an electromagnetic switch valve and a non-return valve, described reducing valve, described switch valve and described non-return valve are motorized valve and three is installed in the junction that water-main (5) is upper or be installed between the inlet of liquid distributor (16) and water-main (5), and described reducing valve, described electromagnetic switch valve and described non-return valve are undertaken controlling by second controller (10) and three is all electrically connected with second controller (10).
4. according to a kind of automobile drum brake spraying temp. lowering apparatus described in claim 1 or 2, it is characterized in that: also comprise parameter input unit (11) and display unit (12), described parameter input unit (11) and display unit (12) are all electrically connected with the first controller (3) and second controller (10).
5. according to a kind of automobile drum brake spraying temp. lowering apparatus according to claim 4, it is characterized in that: also comprise control box and be laid in the electronic circuit board in described control box, described first controller (3) and second controller (10) are all laid on described electronic circuit board, and described parameter input unit (11) and display unit (12) are all laid on the lateral wall of described control box.
6. according to a kind of automobile drum brake spraying temp. lowering apparatus according to claim 5, it is characterized in that: also comprise the timekeeping circuit (13) be electrically connected with the first controller (3), described control box is laid in the operator's compartment of automobile.
7. according to a kind of automobile drum brake spraying temp. lowering apparatus described in claim 1 or 2, it is characterized in that: also comprise one is carried out pressure limiting limiting valve (15) to the fluid pressure of the inlet of liquid distributor (16).
8. according to a kind of automobile drum brake spraying temp. lowering apparatus according to claim 7, it is characterized in that: described limiting valve (15) is arranged on the junction that water-main (5) is upper or be arranged between the inlet of liquid distributor (16) and water-main (5), described limiting valve (15) for motorized valve and its controlled by second controller (10), described limiting valve (15) is electrically connected with second controller (10).
9. according to a kind of automobile drum brake spraying temp. lowering apparatus described in claim 1 or 2, it is characterized in that: described signal detecting unit (9) is arranged on branch's water-supply-pipe (6) or is arranged on the junction between the liquid outlet of branch's water-supply-pipe (6) and liquid distributor (16).
10. according to a kind of automobile drum brake spraying temp. lowering apparatus described in claim 1 or 2, it is characterized in that: described water pump (7) is plunger pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247742.4U CN204567626U (en) | 2015-04-21 | 2015-04-21 | A kind of automobile drum brake spraying temp. lowering apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247742.4U CN204567626U (en) | 2015-04-21 | 2015-04-21 | A kind of automobile drum brake spraying temp. lowering apparatus |
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| CN204567626U true CN204567626U (en) | 2015-08-19 |
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| CN201520247742.4U Expired - Fee Related CN204567626U (en) | 2015-04-21 | 2015-04-21 | A kind of automobile drum brake spraying temp. lowering apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107689285A (en) * | 2017-09-21 | 2018-02-13 | 国网河南省电力公司电力科学研究院 | A kind of automatic fast cooling device of power transformer |
-
2015
- 2015-04-21 CN CN201520247742.4U patent/CN204567626U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107689285A (en) * | 2017-09-21 | 2018-02-13 | 国网河南省电力公司电力科学研究院 | A kind of automatic fast cooling device of power transformer |
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| CF01 | Termination of patent right due to non-payment of annual fee |