CN111238023A - Circulation freeze-proof device - Google Patents
Circulation freeze-proof device Download PDFInfo
- Publication number
- CN111238023A CN111238023A CN202010022591.8A CN202010022591A CN111238023A CN 111238023 A CN111238023 A CN 111238023A CN 202010022591 A CN202010022591 A CN 202010022591A CN 111238023 A CN111238023 A CN 111238023A
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- Prior art keywords
- water
- circulating
- storage tank
- water storage
- water outlet
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- 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.)
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Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 214
- 238000007710 freezing Methods 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims 9
- 230000008014 freezing Effects 0.000 abstract description 6
- 208000001034 Frostbite Diseases 0.000 abstract description 3
- 230000002528 anti-freeze Effects 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/06—Portable or mobile, e.g. collapsible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/06—Arrangement of mountings or supports for heaters, e.g. boilers, other than space heating radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fuel Cell (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a circulating anti-freezing device which comprises a moving member, a circulating water assembly and a control member. The moving part is used for supporting and moving the circulating anti-freezing device; the circulating water assembly comprises a water storage tank, and a water inlet part and a water outlet part which are communicated with the water storage tank, the water storage tank is fixed on the moving part, the side wall of the water storage tank is provided with a heater for heating circulating water, and the water inlet part and the water outlet part are respectively communicated with a water inlet end and a water outlet end of the direct current transmission converter valve cooling system to form a heating circulating water path; the control piece is installed on the moving piece in order to control the circulation of circulating water and the switching of heater. The circulating anti-freezing device provided by the invention is additionally provided with a set of externally arranged and flexibly used circulating anti-freezing device for an external water cooling area. This circulation freeze-proof device is provided with the moving member, and through the circulating water heating in order to continuously provide the heat to the outer cold air cooler of valve, prevents that it from freezing to appear, has the advantage that the removal is nimble, with low costs and prevent frostbite effectually.
Description
Technical Field
The invention relates to the technical field of direct-current transmission converter valve cooling systems, in particular to a circulating anti-freezing device for preventing a direct-current transmission converter valve cooling system from freezing in winter.
Background
The cooling system of the extra-high voltage direct current transmission converter valve is a main system for ensuring the stable operation of the converter valve of core equipment of the converter station, is an important component of the converter station, and has the characteristics of complex structure, severe operation environment and various fault types.
In the prior art, researches on a cooling system of a direct current transmission converter valve mainly focus on optimizing the system structure, improving the automation degree and reducing the volume of a heat exchanger or the volume of the whole system. The technical research on preventing the direct current transmission converter valve cooling system from freezing in winter is few.
However, the direct current transmission converter valve cooling system mostly adopts original anti-freezing equipment in northern areas, and in winter, in order to prevent a cooling medium (pure water or a mixture of water and ethylene glycol) in an external cooling pipeline of the direct current transmission converter valve cooling system from freezing to damage the pipeline, an anti-freezing shed is built in an external cooling area of the valve, and the anti-freezing shed is arranged and has the defects of immobility, high cost, poor anti-freezing effect and the like.
Disclosure of Invention
It is an object of the present invention to provide an external circulating antifreeze apparatus that addresses at least some of the deficiencies of the prior art.
A further object of the present invention is to provide a circulating antifreeze apparatus which is flexible in movement, low in cost and excellent in antifreeze effect.
It is a further object of the present invention to provide an intelligently controlled circulating freeze protection system.
In particular, the present invention provides a circulating freeze preventing device comprising:
a moving member for supporting and moving the circulating freeze-proofing device;
the circulating water assembly comprises a water storage tank, and a water inlet part and a water outlet part which are communicated with the water storage tank, wherein the water storage tank is fixed on the moving part, the side wall of the water storage tank is provided with a heater for heating circulating water, and the water inlet part and the water outlet part are respectively communicated with a water inlet end and a water outlet end of the direct-current transmission converter valve cooling system to form a heating circulating water path; and
and the control part is arranged on the moving part to control the circulation of the circulating water and the opening and closing of the heater.
Preferably, the heater comprises a plurality of heaters and is uniformly distributed on the side wall of the water storage tank;
the plurality of heaters are controlled in groups.
Preferably, the water inlet member includes a water inlet pipe communicated with the water storage tank and a water inlet filter provided on the water inlet pipe.
Preferably, the water outlet member comprises a water outlet pipe communicated with the water storage tank and a water outlet filter arranged on the water outlet pipe.
Preferably, the water outlet piece further comprises a circulating pump arranged on the water outlet pipe so as to provide circulating power for the circulating anti-freezing device; the control part controls the on-off of the circulating pump.
Preferably, a water quality detector is arranged between the water outlet filter and the circulating pump to detect the water quality of the circulating water.
Preferably, a temperature detector is arranged between the water outlet filter and the circulating pump to detect the temperature of the circulating water.
Preferably, a sealing cover is provided on the top of the water storage tank to close the water storage tank.
Preferably, the water inlet filter and the water outlet filter adopt Y-shaped filters.
Preferably, the moving member comprises a fixed plate, a sliding wheel arranged at the bottom of the fixed plate and an armrest arranged at one side of the fixed plate;
the fixing plate is provided with a water storage tank and a control piece.
Compared with the circulating anti-freezing device in the prior art, the circulating anti-freezing device provided by the invention has the following beneficial effects:
the circulating anti-freezing device provided by the invention is used for preventing an external valve cold air cooler of an extra-high voltage direct current transmission converter valve cooling system from being frozen in winter, and a set of externally arranged and flexibly used circulating anti-freezing device is added for an external water cooling area. This circulation freeze-proof device is provided with the moving member, and through the circulating water heating in order to continuously provide the heat to the outer cold air cooler of valve, prevents that it from freezing to appear, has the advantage that the removal is nimble, with low costs and prevent frostbite effectually.
Furthermore, the circulation anti-freezing device adopts a control part to control circulation of circulating water and opening and closing of the heater, so that automatic control of the heater is realized, namely the heater is automatically started when the temperature of the circulating water in the water storage tank is lower than a preset low fixed value, and the heater is automatically stopped when the temperature of the circulating water in the water storage tank is higher than a set high fixed value, and the circulating water temperature in the water storage tank can be ensured to be always within a preset temperature range through the function; the automatic control of the circulating pump is realized, namely when the water level of the water storage tank reaches a certain height, the circulating pump is automatically started, and when the water level of the water storage tank drops to a certain height, the circulating pump is automatically stopped, so that the phenomenon that the water in the water storage tank overflows or is drained can be avoided; further provides an intelligently controlled circulating anti-freezing device.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic view of the entire circulating antifreeze apparatus of the present invention.
In the figure: 10. the device comprises a circulating anti-freezing device, 100 parts of a moving part, 110 parts of a fixed plate, 120 parts of a sliding wheel, 130 parts of a handrail, 200 parts of a circulating water assembly, 210 parts of a water storage tank, 211 parts of a sealing cover, 220 parts of a water inlet part, 221 parts of a water inlet pipe, 222 parts of a water inlet filter, 230 parts of a water outlet part, 231 parts of a water outlet pipe, 232 parts of a water outlet filter, 233 parts of a circulating pump, 2311 parts of a pressure gauge, 234 parts of a water quality detector, 235 parts of a temperature detector, 300 parts of.
Detailed Description
The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a general schematic diagram of a circulating antifreeze apparatus 10 according to the present invention. The circulation anti-freezing device 10 is mainly used for preventing an air cooler of an air cooling system outside a valve of an extra-high voltage direct current transmission converter valve cooling system from being frozen in winter, and a set of circulation anti-freezing device 10 which is arranged outside and used flexibly is added to an outside air cooling area. Specifically, the cycle antifreeze apparatus 10 generally includes a moving member 100, a circulating water assembly 200, and a control member 300.
The moving member 100 includes a fixed plate 110, a sliding wheel 120, and a handrail 130. The fixing plate 110 is provided with a water storage tank 210 and a control 300 for supporting and fixing the water storage tank 210 and the control 300; the sliding wheel 120 is arranged at the bottom of the fixed plate 110, and the sliding wheel is convenient to move the whole circulating anti-freezing device, flexible and convenient; the handrail 130 is disposed at one side of the fixing plate 110, the handrail 130 is U-shaped, both end portions of the handrail 130 are fixed to the fixing plate 110, and the handrail 130 is disposed perpendicular to the fixing plate 110 as a whole, thereby facilitating movement of the circulating waterproof device by a worker.
The circulating water assembly 200 includes a water storage tank and a water inlet member 220 and a water outlet member 230 communicating with the water storage tank 210. The water storage tank 210 is fixed on the moving member, and a heater is arranged on the side wall of the water storage tank to heat circulating water, and the water inlet member 220 and the water outlet member 230 are respectively communicated with the water inlet end and the water outlet end of the direct current transmission converter valve cooling system to form a heating circulating water path. The control member 300 is installed on the moving member to control circulation of the circulating water and opening and closing of the heater.
Specifically, the heater includes a plurality of heaters, each of which is uniformly distributed on the sidewall of the water storage tank 210; the plurality of heaters are controlled in groups. If the circulating water temperature of the water storage tank 210 is low, the control part 300 controls the heater to be started; and controlling the heater to stop heating if the temperature is high. The heaters are controlled in groups, the number of the heaters to be put into the water storage tank 210 is controlled according to the outlet water temperature, the heaters are mutually standby, and the service life of the heaters is prolonged according to the principle of putting into the water storage tank firstly and putting back secondly. The function can realize the automatic control of the heater, namely, the heater is automatically started when the circulating water temperature of the water storage tank 210 is lower than a preset low fixed value, and the heater is automatically stopped when the circulating water temperature of the water storage tank 210 is higher than a set high fixed value, so that the circulating water temperature of the water storage tank 210 can be ensured to be always in a preset temperature range through the function.
The water inlet part 220 includes a water inlet pipe 221 and a water inlet filter 222. The water inlet pipe 221 is communicated with the water storage tank 210 and is used for introducing anti-freezing circulating water into the water storage tank 210 through the water inlet pipe 221; the water inlet filter 222 is disposed on the water inlet pipe 221, and is used for filtering the impurities in the circulating water to prevent the water quality of the water storage tank 210 from being affected. If the water quality of the water storage tank 210 is affected, the operating efficiency of the heater is necessarily affected.
Similarly, the water outlet member 230 includes a water outlet pipe 231 and a water storage filter. The water outlet pipe 231 is communicated with the water storage tank 210, the heating circulating water in the water storage tank 210 enters an external water cooling area of the valve external cooling air cooler through the water outlet pipe 231, and the water outlet filter 232 is arranged on the water outlet pipe 231 and used for further filtering impurities of the circulating water and improving the quality of the circulating water.
Specifically, the water inlet filter 222 and the water outlet filter 232 are both Y-type filters. The Y-shaped filter has the characteristics of advanced structure, small resistance, convenient pollution discharge and the like.
In order to increase the circulating power for the circulating water, the water outlet member 230 further includes a circulating pump 233, and the circulating pump 233 is installed on the water outlet pipe 231 to provide the circulating power to the circulating freeze-preventing device. The control member 300 controls the opening and closing of the circulation pump 233. Specifically, when the liquid level in the water storage tank 210 is high, the liquid level detection signal of the float ball is transmitted to the control element 300, and the control element 300 controls the circulation pump 233 to start; when the liquid level in the water storage tank 210 is low, the control member 300 controls the circulation pump 233 to stop. This function can realize the automatic control of circulating pump 233, reaches a take the altitude when the water level of water storage tank 210 promptly, and circulating pump 233 autostarts, and the water level when water storage tank 210 drops to a take the altitude, and circulating pump 233 autostop can avoid water storage tank 210 water to overflow or the phenomenon of being taken out futilely to take place through this function. The inlet and outlet of the circulating pump 233 are respectively provided with a direct-reading pressure gauge 2311 for monitoring whether the pressure values of the inlet and outlet of the circulating pump 233 are within the normal operation range of the system in real time.
In some preferred embodiments, a water quality detector 234 is disposed between the outlet filter 232 and the circulation pump 233 to detect the quality of the circulating water, and the water quality detector 234 includes, but is not limited to, a conductivity tester to monitor the quality of the circulating water in real time to ensure the quality of the internal cooling water is qualified.
In other preferred embodiments, a temperature detector 235 is disposed between the outlet filter 232 and the circulation pump 233 to detect the temperature of the circulating water, so as to ensure that the circulating water is heated to a proper temperature for anti-freezing purpose.
Further, a sealing cover 211 is disposed on the top of the water storage tank 210 to seal the water storage tank 210, so as to prevent foreign matters from entering the water storage tank 210 or facilitate cleaning of the water storage tank 210 by workers.
The circulating anti-freezing device provided by the invention is used for preventing an external valve cold air cooler of an extra-high voltage direct current transmission converter valve cooling system from being frozen in winter, and a set of externally arranged and flexibly used circulating anti-freezing device is added for an external water cooling area. This circulation freeze-proof device is provided with the moving member, and through the circulating water heating in order to continuously provide the heat to the outer cold air cooler of valve, prevents that it from freezing to appear, has the advantage that the removal is nimble, with low costs and prevent frostbite effectually.
Further, the circulation anti-freezing device adopts the control element 300 to control circulation of the circulating water and opening and closing of the heater, so that not only is automatic control of the heater realized, namely the heater is automatically started when the temperature of the circulating water in the water storage tank 210 is lower than a preset low fixed value, but also the heater is automatically stopped when the temperature of the circulating water in the water storage tank 210 is higher than a set high fixed value, and the function can ensure that the temperature of the circulating water in the water storage tank 210 is always within a preset temperature range; and realize the automatic control of the circulating pump 233, namely when the water level of the water storage tank 210 reaches a certain height, the circulating pump 233 starts automatically, when the water level of the water storage tank 210 drops to a certain height, the circulating pump 233 stops automatically, can avoid the phenomenon that the water of the water storage tank 210 overflows or is pumped out to dry through this function; further provides an intelligently controlled circulating anti-freezing device.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A circulating freeze apparatus, comprising:
a moving member for supporting and moving the circulating freeze-proofing device;
the circulating water assembly comprises a water storage tank, and a water inlet part and a water outlet part which are communicated with the water storage tank, wherein the water storage tank is fixed on the moving part, a heater is arranged on the side wall of the water storage tank to heat circulating water, and the water inlet part and the water outlet part are respectively communicated with a water inlet end and a water outlet end of the direct-current transmission converter valve cooling system to form a heating circulating water path; and
and the control part is arranged on the moving part to control the circulation of the circulating water and the opening and closing of the heater.
2. The cyclic freeze protection device of claim 1, wherein:
the heater comprises a plurality of heaters which are uniformly distributed on the side wall of the water storage tank;
the plurality of heaters are controlled in groups.
3. The cyclic freeze protection device of claim 1, wherein: the water inlet piece comprises a water inlet pipe communicated with the water storage tank and a water inlet filter arranged on the water inlet pipe.
4. The cyclic freeze protection device of claim 3, wherein: the water outlet piece comprises a water outlet pipe communicated with the water storage tank and a water outlet filter arranged on the water outlet pipe.
5. The cyclic freeze protection device of claim 4, wherein: the water outlet part also comprises a circulating pump arranged on the water outlet pipe so as to provide circulating power for the circulating anti-freezing device; the control part controls the on-off of the circulating pump.
6. The cyclic freeze protection device of claim 5, wherein: a water quality detector is arranged between the water outlet filter and the circulating pump to detect the water quality of the circulating water.
7. The cyclic freeze protection device of claim 5, wherein: a temperature detector is arranged between the water outlet filter and the circulating pump to detect the temperature of the circulating water.
8. The cyclic freeze protection device of claim 1, wherein: and a sealing cover is arranged at the top of the water storage tank to seal the water storage tank.
9. The cyclic freeze protection device of claim 4, wherein: the water inlet filter and the water outlet filter are Y-shaped filters.
10. The cyclic freeze protection device of claim 1, wherein:
the moving piece comprises a fixed plate, a sliding wheel arranged at the bottom of the fixed plate and a handrail arranged on one side of the fixed plate;
the fixing plate is provided with the water storage tank and the control piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010022591.8A CN111238023A (en) | 2020-01-09 | 2020-01-09 | Circulation freeze-proof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010022591.8A CN111238023A (en) | 2020-01-09 | 2020-01-09 | Circulation freeze-proof device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111238023A true CN111238023A (en) | 2020-06-05 |
Family
ID=70870365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010022591.8A Pending CN111238023A (en) | 2020-01-09 | 2020-01-09 | Circulation freeze-proof device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111238023A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609772A (en) * | 2020-12-07 | 2021-04-06 | 江苏威迩恒机电科技有限公司 | Anti-freezing control method for pressure tank |
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| KR20090119378A (en) * | 2008-05-16 | 2009-11-19 | 황승하 | Engine cleaning system for automobile cooling line |
| CN205832767U (en) * | 2016-05-04 | 2016-12-28 | 武汉新光专用汽车制造有限公司 | Low temperature anti-freezing water blood circulation |
| CN107587558A (en) * | 2017-09-20 | 2018-01-16 | 长安大学 | A kind of antifreeze water supply intelligence control system of highway in cold region tunnel fire-fighting and method |
| CN107741099A (en) * | 2017-11-13 | 2018-02-27 | 北京众信科源科技有限公司 | A kind of winterization system |
| CN207263435U (en) * | 2017-09-27 | 2018-04-20 | 中国第一汽车股份有限公司 | Engine current test measurement device |
| CN207378369U (en) * | 2017-10-24 | 2018-05-18 | 西南石油大学 | A kind of external application formula oil pipeline defroster |
| CN110173938A (en) * | 2019-05-29 | 2019-08-27 | 合肥金同维低温科技有限公司 | A kind of Cool-water Machine for Industry defroster |
| CN209910199U (en) * | 2019-03-06 | 2020-01-07 | 苏州应信家居科技有限公司 | Solar anti-freezing system |
-
2020
- 2020-01-09 CN CN202010022591.8A patent/CN111238023A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090119378A (en) * | 2008-05-16 | 2009-11-19 | 황승하 | Engine cleaning system for automobile cooling line |
| CN205832767U (en) * | 2016-05-04 | 2016-12-28 | 武汉新光专用汽车制造有限公司 | Low temperature anti-freezing water blood circulation |
| CN107587558A (en) * | 2017-09-20 | 2018-01-16 | 长安大学 | A kind of antifreeze water supply intelligence control system of highway in cold region tunnel fire-fighting and method |
| CN207263435U (en) * | 2017-09-27 | 2018-04-20 | 中国第一汽车股份有限公司 | Engine current test measurement device |
| CN207378369U (en) * | 2017-10-24 | 2018-05-18 | 西南石油大学 | A kind of external application formula oil pipeline defroster |
| CN107741099A (en) * | 2017-11-13 | 2018-02-27 | 北京众信科源科技有限公司 | A kind of winterization system |
| CN209910199U (en) * | 2019-03-06 | 2020-01-07 | 苏州应信家居科技有限公司 | Solar anti-freezing system |
| CN110173938A (en) * | 2019-05-29 | 2019-08-27 | 合肥金同维低温科技有限公司 | A kind of Cool-water Machine for Industry defroster |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609772A (en) * | 2020-12-07 | 2021-04-06 | 江苏威迩恒机电科技有限公司 | Anti-freezing control method for pressure tank |
| CN112609772B (en) * | 2020-12-07 | 2022-08-09 | 江苏威迩恒机电科技有限公司 | Anti-freezing control method for pressure tank |
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Application publication date: 20200605 |