CN203373815U - System utilizing solar water heating system for preventing freezing and preserving heat for fire water tank compartment - Google Patents
System utilizing solar water heating system for preventing freezing and preserving heat for fire water tank compartment Download PDFInfo
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- CN203373815U CN203373815U CN201320483762.2U CN201320483762U CN203373815U CN 203373815 U CN203373815 U CN 203373815U CN 201320483762 U CN201320483762 U CN 201320483762U CN 203373815 U CN203373815 U CN 203373815U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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Abstract
The utility model discloses a system utilizing a solar water heating system for preventing freezing and preserving heat for a fire water tank compartment. A heat exchanging pipeline is arranged inside a hot water storage tank. A water inlet and a water outlet of the heat exchanging pipeline are communicated into a roof fire water tank through a communicating pipeline. The communicating pipeline is provided with a circulating water pump and a temperature control solenoid valve. The system further comprises a fire water tank compartment control cabinet. The roof fire wire tank is internally provided with a fire water tank water temperature detector. A control switch of the circulating water pump, the temperature control solenoid valve and the fire water tank water temperature detector are connected to the fire water tank compartment control cabinet. According to the system, an original fire control pressurizer device is improved to directly control. A water tank, a fire control pressurizer device and the pipeline inside the fire water tank compartment are prevented from being frozen. Pipeline arrangement is carried out based on an original station house area, and the increased expense is the increased expense of the circulating pipeline, a heat exchanging coil inside the hot water storage tank, the solenoid valve and a control valve.
Description
Technical field.
The utility model relates to the Designing of Building Water System technical field, especially relates to a kind of system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing.
Background technology
At present the multilayer structure fire fighting supply of China, substantially all adopt the temporary high-pressure water supply system, and underground fire cistern and the fire pump room of arranging of Ye Ji community or building arranges between fire water box on high constructure top, fire water box arranged between fire water box.According to relevant specification of country, the dischargeable capacity of the high-order fire water box of temporary high-pressure fire supply system should meet the requirement of the required fire consumption of initial fire disaster water fire-extinguishing system, and should meet the following requirements: the high-rise civilian public building of a class should not be less than 18m3, when the calculating dischargeable capacity is greater than 18m3, still can adopt 18m3; Multilayer and two class high-rise public buildings and a class opening in high-rise residential buildings should not be less than 12m3, when the calculating dischargeable capacity is greater than 12m3, still can adopt 12m3; The multilayer residential building and the two class opening in high-rise residential buildings that are greater than 7 layers should not be less than 6m3; , when the calculating dischargeable capacity is greater than 6m3, still can adopt 6m3.
According to " Code for fire protection design of buildings " GB50016-2006 8.4.4 bar and interpretation of section and " Code for fire protection design of high rise buildings " GB50045-95 (version in 2005) 7.4.7 bar, arranging highly of fire water box should guarantee least favorable hydrant hydrostatic pressure.In most projects, all do not have condition that position between water tank is raised more than 7 meters, adopt the water tank gravity flow to guarantee hydrostatic pressure, so, when high-order fire water box can not meet static pressure requirement, the general employing arranges pressure stabilizing equipment.Pressure stabilizing equipment generally is comprised of stabilized pressure pump (two, the using and the reserved) and vacuum tank, according to national standard drawings 98S205 " the fire fighting pressurization pressure stabilizing device is selected and installed ", is chosen.The design discharge of stabilized pressure pump should meet the following requirements: 1 normal leakage amount and the system that should not be less than the fire supply system pipe network starts flow automatically; The normal leakage amount of 2 fire supply system pipe networks should determine according to pipe material, interface shape etc., and when there is no pipeline network leak amount data, the design discharge of stabilized pressure pump should be by the 1%-3% of fire supply system design discharge, and should not be less than 1L/s; Booster pump flow according to " building plumbing system design manual " (second edition) supercharging equipment should not be greater than 5L/s.
According to " Code for design of building water supply and sewerage " GB50015-2003 (version in 2009) 3.5.25 bar: the feedwater piping that the be laid in room, basement and the pipe well that likely freeze, pipe trench etc. are located should have antifreezing measures.Version " State Technical Method for Civil Building Project-water supply and drainage " 2.8.18 bar in 2009: arrange storage cistern (case) the room indoor light, ventilating should be good, and be convenient to safeguard, room temperature should not be lower than 5 ℃, when room temperature may be lower than 0 ℃, anti-freeze measure should be arranged." fire water supply and hydrant system technical specification " (declaration original text in 2011) 5.2.5 bar: answer the well-ventilated between high-order fire water box, do not freeze, in the time must being arranged on the non-heating room in the freezed in winter areas such as severe cold, cold, should take antifreezing measures, environment temperature or water temperature should be lower than 5 ℃.
If buildings in general is designed with boiler room, central heating system ，Ru community or municipal heating power heating, can access interior radiator heating between water tank.But, at present in design, the residential quarters that some is regional or Gongjian do not arrange the central heating system, and especially the residential quarters in suburb more and more adopt the household fuel gas stove for indoor heating system, and more high-grade Residential Area adopts residential central air-winter to send plenum heating to indoor; Large-scale Gongjian's complex building generally adopts fan coil system to send plenum heating to business or Administrative Area winter.So, at house or the public building of cold and severe cold area, fireproof tank in roof heating becomes when last large problem.Between the fireproof tank in roof of these communities or building, usually adopt electric heater or the electrically heat tracing method of pipeline to carry out heat-preserving anti-freezing to water tank and pipeline.Adopt electric heater, have potential safety hazard, people's heating of being responsible for house specially on duty need to be arranged; Adopt electric tracing to water tank and pipe insulation, successful, but belong to electric heating system, do not meet ideas of energy-saving." severe cold and cold district energy Saving Design of Residential Buildings standard " be (DBJ11/891-2012) 4.1.7 bar of 5.1.6 bar and Beijing's provincial standard " energy Saving Design of Residential Buildings standard " (JGJ26-2010): should not adopt the main body thermal source of direct electric heating heating equipment as heating.Beijing's provincial standard " public building energy design standard " is the 4.4.2 bar (DBJ11/687-2009): must not adopt the main body thermal source as direct heating and air handling system such as electrode boiler, electric water heater.Above-mentioned clause is compulsive clause, and reason is directly to be converted to low-grade heat energy with high-grade electric energy to carry out heating, is that the poor efficiency of the energy is used.Moreover between unattended fire water box, or, in the situation of non-fire power power failure in short-term or maintenance, electric heater and accompanying-heat cable lose heating function, and attic tank may freeze phenomenon, if now the condition of a fire occurs, consequence is hardly imaginable.
From 1 day March in 2012, Beijing implemented " Beijing's solar water heating system town building application management way ".Way regulation: newly-built cities and towns residential building in this city administrative region, there is domestic hot-water's demand hotel, hotel, school, hospital, bathing pool, swimming hall etc. meets the newly-built cities and towns public building of mounting condition, should be equipped with the hot water supply system, and should preferentially adopt industrial exhaust heat, used heat as domestic hot-water's thermal source.Do not possess and adopt industrial exhaust heat, used heat, solar water heating system should be installed, and implementation is synchronizeed with building body, and planning and designing, synchronous construction are installed, the synchronous examination handed over use.And encourage the existing building satisfied the requirements to use solar water heating system by improvement and installation.According to building function characteristics, energy-saving and cost-reducing and facilitate the requirement such as O&M, rationally determine the type of solar thermal collection system.Hebei, the relevant solar heat Water policy of utilizing is also put into effect on the ground such as Tianjin in succession.
The design form of solar water heating system generally is divided into centralized and distributing.Distributing is that each household oneself arranges solar heat-collection plate and hot water water storing tank; Centralized is at roof concentrated setting solar heat-collection plate and solar energy hot water tank (two kinds of ways of single cistern system and double-water-tank system).Because centralized solar energy system cost is low, the thermal efficiency is higher, and system pipeline is few, applies more extensive.Centralized solar water heating system, as shown in Figure 1.
The utility model content
The purpose of this utility model is to design a kind of novel system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing, and addresses the above problem.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing, comprise solar water heating system and fire fighting system, and described solar water heating system comprises heat storage water tank, and described fire fighting system comprises fireproof tank in roof; Be provided with heat exchanging pipe in described heat storage water tank, the water inlet of described heat exchanging pipe and delivery port all, by being communicated with cross current in described fireproof tank in roof, are provided with circulating water pump and temperature control electromagnetic on described connection water pipe;
Also comprise switch board between fire water box, be provided with the fire water box water temperature probe in described fireproof tank in roof, the gauge tap of described circulating water pump, described temperature control electromagnetic and described fire water box water temperature probe all are connected to switch board between described fire water box.
Also be provided with fire positive closing electromagnetic valve on described connection water pipe, described fire positive closing electromagnetic valve is connected with described temperature control electromagnetic, and described fire positive closing electromagnetic valve also is connected to switch board between described fire water box.
Also be provided with hand control valve on described connection water pipe, described hand control valve is also connected with described temperature control electromagnetic.
Described circulating water pump consists of the water pump of two parallel connections.
Described circulating water pump is the stabilized pressure pump that the fire-fighting stable-pressure device is equipped with.
Be provided with T-shaped tee junction on the water inlet of described heat exchanging pipe in described fireproof tank in roof, and stretch into the centre of described fireproof tank in roof, two water inlets on described T-shaped tee junction are aimed at different water inlet directions.
Described solar water heating system is centralized solar water heating system.
Be provided with electric auxiliary heating equipment in described heat storage water tank.
The beneficial effects of the utility model can be summarized as follows:
1, the utility model is directly controlled after utilizing the system reform of original fire-fighting stable-pressure device.Guaranteed that fire pump room inner water tank and fire-fighting stable-pressure device also have the antifreeze of pipeline, utilize original station area to carry out line arrangement, the expense of increase is the circulating line expense increased, the expense of heat exchange coil, electromagnetic valve and by-pass valve control in the thermal storage water tank simultaneously.
2, the utility model electric controller can utilize the control cabinet of original solar energy machine room and the control cabinet between original fireproof tank in roof, signal and electromagnetic valve signal all, by light current bus and solar energy machine room and fire protection control room contact, increase cost seldom on light current is controlled.
Emergency shutdown special electromagnetic valve while 3, on the utility model circulating system, being provided with fire-fighting can directly close closed loop system at the scene when fire occurs, and guarantees the fire-fighting voltage-stabilizing system.
4, the utility model does not relate to the change of building fire-fighting system, can directly increase the pipeline connection and get final product on existed building.
5, current Beijing or some other provinces and cities, mandatory requirement is all arranged at house or have on hot water demand's Gongjian solar water heating system is set, present technique is directly utilized solar water machine room and the hot water cylinder of existing design, water tank between the fireproof tank in roof of cold district and severe cold area, pump valve and pipeline are carried out to interchange of heat measure heating and anti-freezing, easy for installation, reliability is high.System advantage: 1. abundant full use solar energy source, realize that solar energy resources shares; 2. minimum limit is used conventional energy resource, reaches the lowest coursing cost; 3. system is antifreeze safe; 4. utilize original station to be arranged, there is no the increase of equipment; 5. system is full-automatic unmanned on duty; Automatically control, the security against fire water while simultaneously guaranteeing fire-fighting, have promotional value.
The accompanying drawing explanation
Fig. 1 is centralized solar water heating system arrangement diagram of the prior art;
Fig. 2 is the utility model solar water heating system antifreeze cycle arrangement figure between fire water box.
Wherein, 1 heat storage water tank, 2 float valves, 3 electric auxiliary heating equipment, 4 solar energy system switch boards, 5 tap water entering water electromagnetic valves, 6 domestic hot-water's water supply loops, 7 fireproof tank in roofs, 8 circulating water pump, 9 temperature control electromagnetic, 10 fire positive closing electromagnetic valves, 11 fire water box water temperature probes, 12 fire main Voltage force tables, switch board between 13 fire water boxs, 14 fire_fighting pipe network interfaces, 15 heat exchanging pipes, 16 hand control valves.
The specific embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
A kind of system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing as shown in Figure 2, comprise a kind of system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing, comprise solar water heating system and fire fighting system, described solar water heating system comprises heat storage water tank 1, and described fire fighting system comprises fireproof tank in roof 7; Be provided with heat exchanging pipe 15 in described heat storage water tank 1, the water inlet of described heat exchanging pipe 15 and delivery port all, by being communicated with cross current in described fireproof tank in roof 7, are provided with circulating water pump 8 and temperature control electromagnetic 9 on described connection water pipe; Also comprise switch board 13 between fire water box, be provided with fire water box water temperature probe 11 in described fireproof tank in roof 7, the gauge tap of described circulating water pump 8, described temperature control electromagnetic 9 and described fire water box water temperature probe 11 all are connected to switch board 13 between described fire water box.
In the embodiment be more preferably, also be provided with fire positive closing electromagnetic valve 10 on described connection water pipe, described fire positive closing electromagnetic valve 10 is connected with described temperature control electromagnetic 9, and described fire positive closing electromagnetic valve 10 also is connected to switch board 13 between described fire water box.Also be provided with hand control valve 16 on described connection water pipe, described hand control valve 16 is also connected with described temperature control electromagnetic 9.
In the embodiment be more preferably, described circulating water pump 8 consists of the water pump of two parallel connections.The stabilized pressure pump that described circulating water pump 8 is equipped with for the fire-fighting stable-pressure device.And described circulating water pump is simultaneously as the fire fighting system stabilized pressure pump.
In the embodiment be more preferably, be provided with T-shaped tee junction on the water inlet of described heat exchanging pipe 15 in described fireproof tank in roof 7, and stretching into the centre of described fireproof tank in roof 7, two water inlets on described T-shaped tee junction are aimed at different water inlet directions.
In the embodiment be more preferably, described solar water heating system is centralized solar water heating system.Be provided with electric auxiliary heating equipment 3 in described heat storage water tank 1.
This patent is for centralized solar water heating system, utilize with solar energy hot water tank (or using the water tank be connected with collecting plate in the solar energy double-water-tank system) and carry out interchange of heat, improve the temperature of fire water in fire water box, prevent pipeline, the freezing of water pump and water.
Utilize the hot water cylinder of roof solar machine room to adopt the water tank of 7 of pipeline and adjacent fireproof tank in roofs to be connected, system comprises by-pass valve control, circulation pump, pipeline, the equipment such as electric control circuit composition.The stabilized pressure pump that circulation pump is water for firefighting, operating principle is as follows: winter, temperature point T1 in fire water box is during lower than 5 ℃, controller is opened the electromagnetic valve 1 on the circulation line be connected with the thermal storage water tank automatically, start fire-fighting stabilized pressure pump water pump (being now circulation pump for work) P1, cold water in fire water box is sent in the coil pipe in the thermal storage water tank, in order to guarantee the circulation of water in fire water box, connecting T-shaped tee junction on suction water pipe, stretch in the middle of water tank, both direction water inlet, prevent the hot and cold water short circuit, allows water flow in water tank simultaneously.By continuous circulation and interchange of heat, constantly by the energy storage of solar energy hot water tank in fire water box, the water temperature in fire water box raises.
When being elevated to certain temperature control setting value, as 10 ℃ of left and right, water pump P 1 is out of service, Self-shut electromagnetic valve 1, water while guaranteeing fire-fighting.Water in water tank can keep the antifreeze time of uniform temperature.When temperature drops to setting value again, water pump restarts, again circulation.According to setting, adopt two pumps alternate run mode.For the water tank of 18m3, only need 1 hour after the unlatching stabilized pressure pump, just can be by the water circulation in water tank once.Substantially between 40-55 ℃, can improve the water temperature of cyclic water outlet due to the water temperature in hot water cylinder by strengthening heat exchange area, then in fire water box and cold water improve water temperature in fire water box by mixing, minimizing heat time heating time and pump operation time.When fire occurs, the pressure of fire_fighting pipe network reduces suddenly, and no matter whether stabilized pressure pump, according to the signal enabling of Voltage force table, carrying out antifreeze circulation, pressure-stabilizing water supply when system all guarantees fire-fighting by positive closing electromagnetic valve 2..
Under the condition of rainy weather or solar energy deficiency, especially during night, after the solar energy hot water tank water supply volume increases, temperature has large reduction, while not reaching the domestic hot-water of resident family design temperature, now controller for solar startup auxiliary energy system heats solar energy hot water tank, reaches design temperature and stops meeting the demands.For the fire water box of Patent design and the winterization system of equipment, do not affect like this.Summer and autumn in spring are closed 16 of hand control valves on circulation line.
The present technique electromagnetic valve adopts ZSCF type electromagnetic valve for fire control, six sizes of latus rectum DN15-DN50.Operating voltage: DC24V. form of structure adopts Direct Action Type.
Arrange and see Fig. 2 in detail.In the dotted line frame, be equipment and the pipeline of fire pump room.By two circulating lines and the solar water machine room hot water cylinder of wearing partition wall, join.
More than by concrete and preferred embodiment detailed description the utility model; but those skilled in the art should be understood that; the utility model is not limited to the above embodiment; all within spirit of the present utility model and principle; any modification of doing, be equal to replacement etc., within all should being included in protection domain of the present utility model.
Claims (8)
1. one kind is utilized the system of solar water heating system for anti-freezing and heat-insulating between fire water box, it is characterized in that: comprise solar water heating system and fire fighting system, described solar water heating system comprises heat storage water tank, and described fire fighting system comprises fireproof tank in roof; Be provided with heat exchanging pipe in described heat storage water tank, the water inlet of described heat exchanging pipe and delivery port all, by being communicated with cross current in described fireproof tank in roof, are provided with circulating water pump and temperature control electromagnetic on described connection water pipe;
Also comprise switch board between fire water box, be provided with the fire water box water temperature probe in described fireproof tank in roof, the gauge tap of described circulating water pump, described temperature control electromagnetic and described fire water box water temperature probe all are connected to switch board between described fire water box.
2. the system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing according to claim 1, it is characterized in that: also be provided with fire positive closing electromagnetic valve on described connection water pipe, described fire positive closing electromagnetic valve is connected with described temperature control electromagnetic, and described fire positive closing electromagnetic valve also is connected to switch board between described fire water box.
3. the system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing according to claim 1, it is characterized in that: also be provided with hand control valve on described connection water pipe, described hand control valve is also connected with described temperature control electromagnetic.
4. the system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing according to claim 1, it is characterized in that: described circulating water pump consists of the water pump of two parallel connections.
5. the system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing according to claim 4, is characterized in that: the stabilized pressure pump that described circulating water pump is the outfit of fire-fighting stable-pressure device.
6. the system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing according to claim 1, it is characterized in that: on the water inlet of described heat exchanging pipe in described fireproof tank in roof, be provided with T-shaped tee junction, and stretching into the centre of described fireproof tank in roof, two water inlets on described T-shaped tee junction are aimed at different water inlet directions.
7. the system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing according to claim 1, it is characterized in that: described solar water heating system is centralized solar water heating system.
8. the system of solar water heating system for anti-freezing and heat-insulating between fire water box of utilizing according to claim 7, is characterized in that: be provided with electric auxiliary heating equipment in described heat storage water tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320483762.2U CN203373815U (en) | 2013-08-08 | 2013-08-08 | System utilizing solar water heating system for preventing freezing and preserving heat for fire water tank compartment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320483762.2U CN203373815U (en) | 2013-08-08 | 2013-08-08 | System utilizing solar water heating system for preventing freezing and preserving heat for fire water tank compartment |
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| CN201320483762.2U Expired - Fee Related CN203373815U (en) | 2013-08-08 | 2013-08-08 | System utilizing solar water heating system for preventing freezing and preserving heat for fire water tank compartment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971068A (en) * | 2016-07-05 | 2016-09-28 | 顾轩 | Pressure maintaining self-heating firefighting water supply system for hydropower station |
| CN108842860A (en) * | 2018-07-16 | 2018-11-20 | 山西省交通规划勘察设计院 | Solar energy auxiliary power supply pipe network winterization system and thirdly chamber special pipe |
| CN111001118A (en) * | 2019-12-06 | 2020-04-14 | 中铁第四勘察设计院集团有限公司 | Circular anti-freezing system and method for molten iron fire-fighting ring pipe |
| CN112393448A (en) * | 2019-08-14 | 2021-02-23 | 上海唐银投资发展有限公司 | Solar water heating system based on solar energy utilization |
| CN114263237A (en) * | 2021-12-30 | 2022-04-01 | 中国电建集团华东勘测设计研究院有限公司 | Hydropower station technical water supply system with anti-freezing, heating and intelligent allocation functions |
-
2013
- 2013-08-08 CN CN201320483762.2U patent/CN203373815U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971068A (en) * | 2016-07-05 | 2016-09-28 | 顾轩 | Pressure maintaining self-heating firefighting water supply system for hydropower station |
| CN108842860A (en) * | 2018-07-16 | 2018-11-20 | 山西省交通规划勘察设计院 | Solar energy auxiliary power supply pipe network winterization system and thirdly chamber special pipe |
| CN108842860B (en) * | 2018-07-16 | 2023-06-02 | 山西省交通规划勘察设计院有限公司 | Solar auxiliary power supply network anti-freezing system and three-cavity special-shaped pipe thereof |
| CN112393448A (en) * | 2019-08-14 | 2021-02-23 | 上海唐银投资发展有限公司 | Solar water heating system based on solar energy utilization |
| CN111001118A (en) * | 2019-12-06 | 2020-04-14 | 中铁第四勘察设计院集团有限公司 | Circular anti-freezing system and method for molten iron fire-fighting ring pipe |
| CN114263237A (en) * | 2021-12-30 | 2022-04-01 | 中国电建集团华东勘测设计研究院有限公司 | Hydropower station technical water supply system with anti-freezing, heating and intelligent allocation functions |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20160808 |