CN115282523A - Construction method of underground public transport hub engineering fire-fighting system - Google Patents
Construction method of underground public transport hub engineering fire-fighting system Download PDFInfo
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/02—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires
- A62C3/0214—Fire prevention, containment or extinguishing specially adapted for particular objects or places for area conflagrations, e.g. forest fires, subterranean fires for buildings or installations in fire storms
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/20—Hydrants, e.g. wall-hoses, wall units, plug-in cabinets
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B9/00—Methods or installations for drawing-off water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B9/00—Methods or installations for drawing-off water
- E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
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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
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Abstract
The invention provides a construction method of a fire-fighting system of an underground public transport hub project, and relates to the technical field of project fire-fighting. The method comprises the following steps: s1, determining a water supply scheme, a fire pump room and a water pool; s2, selecting a fire-fighting water source for supply; s3, setting an outdoor fire hydrant, and selecting the position of the outdoor fire hydrant; s4, setting an indoor fire hydrant, selecting the indoor fire hydrant and selecting a high-level fire water tank; the method comprises the following steps of firstly, determining the fire pump room and the water pool of the water supply scheme in the first step by considering the arrangement positions of the fire pump room and the water pool, wherein the fire pump room and the water pool are arranged on an interlayer or a ground layer according to the engineering implementation condition.
Description
Technical Field
The invention relates to the technical field of engineering fire protection, in particular to a construction method of an underground public transport hub engineering fire protection system.
Background
In recent years, with the release of 'the construction of the strong country of transportation' and 'the compendium of the national comprehensive three-dimensional transportation network' for 'building hubs, namely building cities', the concept of 'station-city fusion' is widely agreed, the development mode of 'station-city fusion' is gradually formed, and in the 'station-city fusion' mode, a 'station' is not a simple 'station', but an organic component of a city, the transportation distribution and the urban public services are organically connected, so that the 'station-city fusion' is a special building complex which arises in a specific period, and the water fire-fighting design of the project does not have completely matched design specifications or standards at present, so that a construction method of an underground public transportation hub engineering fire-fighting system is needed to ensure the normal operation and use functions of underground public transportation.
The fire control water source and the setting of water supply and indoor outer fire hydrant need be considered in traditional underground public transport hub engineering fire control, guarantee the result of use and the service quality of engineering fire control, and traditional engineering fire control design does not have the rule can follow, does not have the trace to follow for efficient land development utilizes the mode, and comprehensive transportation hub building can not more and more standardize, standardize.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a construction method of an underground public transport junction engineering fire-fighting system, which solves the problems that the fire-fighting water source, water supply and the arrangement of indoor and outdoor fire hydrant need to be considered in the traditional underground public transport junction engineering fire-fighting to ensure the use effect and the use quality of engineering fire-fighting, the traditional engineering fire-fighting design is not designed according to rules and can not be followed, and the efficient land development and utilization mode and the comprehensive transport junction building cannot be more and more standardized and standardized.
(II) technical scheme
In order to realize the purpose, the invention is realized by the following technical scheme: a construction method of a fire fighting system of an underground public transport hub project comprises a fire fighting water source, a water supply scheme, an outdoor fire hydrant and an indoor fire hydrant, wherein a municipal water supply pipeline used by the fire fighting water source needs to be provided with a fire fighting water pool according to the requirement of 'water rule 1' 4.3.1, the fire fighting water pool stores indoor and outdoor fire fighting water consumption required by a fire, the water supply scheme firstly calculates the design flow of the fire hydrant, the design flow of the fire hydrant refers to a calculation method of the 14 th page of a 'water rule diagram 2', the design flow of the indoor and outdoor fire hydrant of the project is calculated according to the total volume under different functions, the design flow of the indoor and outdoor fire hydrant of the project is 40S/L, the design flow of the fire hydrant is calculated, then the outdoor fire fighting water supply system is selected, the outdoor fire fighting water supply system is selected under the condition that only one path of municipal water supply is adopted, the first mode is that a water supply pipe is directly supplied to the fire fighting water supply pipe, the outdoor fire fighting water supply system is protected by a second fire fighting water supply system, and the outdoor fire fighting water supply system is not required to be protected by a high-pressure water supply protection device, and the second fire fighting water supply system is set.
Preferably, the water supply scheme considers the setting position of a fire pump room and a water pool at last, the setting place of the fire pump room is mainly limited by a water eliminating rule 1 of 5.5.12, meanwhile, the setting position of a water intake of a fire pool meets the requirement of a water eliminating rule 1 of 4.3.7, the fire pump room and the water pool can only be arranged on an interlayer or a ground layer, the fire pump room and the water pool are independently arranged outside the main structure of an underground building and are arranged nearby at the periphery of a transfer hall of the first layer, a water intake of the fire pool is used for protecting a transfer hall under the condition that an outdoor fire main pump is not started, the protection radius of the water intake is ensured to be utilized, and one safety guarantee is increased for the ground building.
Further, the outdoor fire hydrant is arranged to respectively discuss the outdoor fire extinguishing device in a ground building and an underground building, for the transfer station hall on the ground floor, the protection range of the water intake of the fire pool is 150 meters, under the design, the outdoor fire hydrant can be no longer arranged, but the redundancy of fire safety and the addition of individual outdoor fire hydrant have no great influence on the manufacturing cost, therefore, two types I outdoor fire hydrants are arranged on the fire fighting and saving surface of the ground building, and the functions of the two types II outdoor fire hydrants are overlapped with the functions of the fire fighting water intake, for the underground building part of the project, the underground building part is communicated with the ground by 12 ground access openings, the access openings are narrow, no specific fire fighting and extinguishing surface is provided, when a fire disaster happens, when a fireman enters the underground space through the entrance and exit to extinguish fire, the fireman must have a fire hydrant similar to a fire elevator front room to detect the fire, the method is also proved in the explanation of the article 7.3.4 of the 'water-eliminating gauge 1', the outdoor fire hydrant is a class I outdoor fire hydrant, the position of the outdoor fire hydrant is within the range of 5-40 meters of each entrance and exit, the adjacent entrances and exits can be mutually borrowed, but only the outdoor fire hydrant is certainly not enough, the number of the outdoor fire hydrant is also required in 7.3.2 of the water gauge 1, the project at least needs 3 outdoor fire hydrants calculated according to the design flow 40L/S of the outdoor fire hydrant of the project, the 3 outdoor fire hydrants are class II outdoor fire hydrants which are connected out from a municipal direct supply low-pressure outdoor fire-fighting pipe network and are not required to be arranged in the range of 5-40 meters of an entrance, but the quantity and the flow rate are corresponding to the water pump adapter, and the distance between the quantity and the flow rate is 15-40 m according to the requirement of 5.4.7 of a 'water eliminating rule 1'.
Furthermore, the indoor fire hydrant system is firstly selected according to the requirements of 'water-removing rule 1' 7.1.3 and 7.1.5, a wet fire-fighting water supply system is not used in principle, but the indoor fire hydrant system is special for some projects, a ground transfer station hall, a matching management room of an interlayer and a fast-selling shop area of a next floor are provided with concentrated heating facilities, the lowest environmental temperature in winter can be guaranteed to be not lower than 5 ℃, other non-heating areas are mainly parked for passenger taxies, buses and social vehicles due to the functions, the areas are provided with a certain amount of human flow or vehicle flow, certain heat can be brought to the environment, the heat insulation of an underground building is obvious, the project finally adopts a wet indoor fire hydrant system by combining the actual experience of local peers, the fire fighting pipeline of the non-heating area is provided with an electric heating wire, the electric heating wire is adopted for controlling, when the environmental temperature is lower than 5 ℃, the electric heating wire is automatically connected with a power supply, the electric heating wire is strictly connected, the electric heating wire is not damaged when the fire-fighting water is sprayed on the fire-fighting water-fighting pipeline, and the fire-fighting water-tracing wire is not damaged, even if the electric heating wire is strictly considered in the fire-fighting network, the fire-fighting accompanying water-fighting network, the fire-fighting water-fighting network, the fire-tracing wire is strictly speaking, the fire-fighting water-tracing wire, the fire-fighting water-tracing wire is not damaged.
Furthermore, the main pump of the indoor fire hydrant needs to be selected after the indoor fire hydrant is arranged, according to the requirement of 10.1.7 of a water-eliminating gauge 1, the design lift of the fire pump consists of resistance loss, water supply height difference and design pressure required by the fire extinguishing facility with the worst ignition, the project is a building with one floor above the ground and three floors below the ground, and the high and large clearance of one floor is more than 8 meters, so that the 'unfavorable point' of the project cannot be directly selected from the indoor fire hydrant which is farthest from a pump room in a geometric sense, and the project needs to be obtained through calculation and comparison. Firstly, selecting dynamic pressure of a bolt port of an indoor fire hydrant at three underground layers and designing a lift P1 according to 0.25MPa, then selecting dynamic pressure of a bolt port of an indoor fire hydrant at one underground layer and designing a lift P2 according to 0.35MPa, and finally calculating that P2 is greater than P1, so that P2 is used as a design lift of a main pump of the indoor fire hydrant, and the dynamic pressure of the bolt port of the indoor fire hydrant at the upper layer at a position with a disadvantage under the P2 design lift is not lower than 0.35MPa, namely, the dynamic pressure of the bolt port of each indoor fire hydrant at each underground layer of the whole building is greater than 0.35MPa and is not more than 0.50MPa according to the corresponding relation between the dynamic pressure of the bolt port of the indoor fire hydrant and the flow.
Further, whether the problem about setting up high-order fire water tank is considered at last in the setting of indoor fire hydrant, when the interim high-pressure water supply system is adopted in indoor fire control, should set up high-order fire water tank in principle, but engineering ground building is a big headroom, the large-span has special molding's steel construction roofing, it is unrealistic to set up the holding water box room of a concrete structure on the roofing, 2 nd item in "water eliminating regulation 1"6.1.9 has made clear and has confirmed under the condition that it is difficult to set up high-order water tank, agrees to only set up the steady voltage pump, because of the subway station is liked to in ground building shape, concrete position of setting up is by same owner coordinated operation management in water eliminating regulation allowed range.
(III) advantageous effects
The invention provides a construction method of a fire-fighting system of an underground public transport hub project. The method has the following beneficial effects:
1. the system method can systematically set the fire fighting water source, the water supply and the indoor and outdoor fire hydrant, and ensures that the fire fighting design can be regularly and regularly followed, so that the efficient land development and utilization mode and the comprehensive transportation hub building can be more and more standardized and standardized.
Drawings
FIG. 1 is a schematic diagram of the corresponding relationship between dynamic pressure and flow rate of the plug.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The first embodiment is as follows:
the embodiment of the invention provides a construction method of a fire-fighting system of an underground public transport hub project, which comprises a fire-fighting water source and water supply scheme, an outdoor fire hydrant and an indoor fire hydrant, and is characterized in that: the municipal water supply pipeline for utilizing the fire-fighting water source is required to be provided with a fire-fighting water pool according to the requirement of a water-eliminating gauge 1 of 4.3.1, the fire-fighting water pool stores indoor and outdoor fire-fighting water consumption required by a fire, the water supply scheme firstly calculates the design flow of fire-fighting bolts, the design flow of the fire-fighting bolts refers to a calculation method of the fire-fighting water quantity of a multilayer comprehensive building on page 14 of a water-eliminating gauge diagram 2, the design flow of the indoor and outdoor fire-fighting bolts of the project is calculated according to the total volume under different functions, the design flow of the indoor and outdoor fire-fighting bolts of the method is 40S/L, the design flow of the fire-fighting bolts is calculated, then an outdoor fire-fighting water supply system is selected, the outdoor fire-fighting water supply system is selected under the condition that only one municipal water supply is available, the first mode is that the outdoor fire-fighting water supply is directly supplied by one municipal water supply pipe under low pressure, in addition, a building to be protected is covered by a fire-fighting water pool water intake for storing outdoor fire-fighting water with a protection radius of 150 meters, a temporary high-pressure system is adopted for the outdoor fire-fighting water supply, the fire-fighting water intake is required to be arranged at any time, the protection radius can be omitted, the first system has higher system reliability than the second system because no pressurizing equipment is required to be arranged, the arrangement positions of a fire-fighting pump room and a water pool are finally considered in the water supply scheme, the arrangement place of the fire-fighting pump room is mainly limited by a water eliminating gauge 1, 5.5.12, the arrangement position of the fire-fighting water pool water intake meets the requirement of the water eliminating gauge 1, 4.3.7, the fire-fighting pump room and the water pool can only be arranged on an interlayer or one floor above the ground by combining the two provisions, the fire-fighting pump room and the water pool are independently arranged outside the main structure of the underground building and are arranged nearby on the periphery of a floor-to change hall, and the water pool water intake of the fire-fighting water pool is used for protecting the floor-change hall under the condition that an outdoor main pump is not started, the protection radius of a fire-fighting water intake is guaranteed to be utilized, a safety guarantee is added to the ground building, the system method can systematically set the fire-fighting water source, the water supply and the indoor and outdoor fire hydrant, the fire-fighting design can be guaranteed to be regularly arranged, and the fire-fighting design can be regularly arranged and can be tracked, so that the efficient land development and utilization mode and the comprehensive transportation junction building can be more and more standardized and standardized.
Example two:
the embodiment of the invention provides a construction method of a fire-fighting system of an underground public transport hub project, which is further expanded according to the contents in the first specific embodiment:
wherein, the outdoor fire hydrant arrangement respectively discusses the arrangement of outdoor fire extinguishing into a ground building and an underground building, for a transfer station hall at the upper floor, the arrangement is in the protection range of 150 meters at the water intake of a fire pool, the outdoor fire hydrant can be no longer arranged under the design, but the cost is not greatly influenced by the redundancy of fire safety and the addition of individual outdoor fire hydrants, so that two class I outdoor fire hydrants are arranged on the fire fighting and extinguishing surface of the ground building, and the class II outdoor fire hydrants are overlapped with the function of the fire fighting and water intake, for the underground building part of the project, the fire fighter needs to have a fire hydrant similar to a front room of a fire elevator if entering the underground space through the entrance and exit and the entrance is narrower and has no specific fire fighting and extinguishing surface when a fire occurs, for exploring fire, the rule 1 is a class I outdoor fire hydrant, the position of the outdoor fire hydrant is within the range of 5-40 meters of each access opening, the adjacent access openings can be borrowed mutually, but only one outdoor fire hydrant is certainly insufficient, the number of the outdoor fire hydrants in the class I outdoor fire hydrant 1 is also required in 7.3.2, the project at least needs 3 outdoor fire hydrants according to the design flow 40L/S of the outdoor fire hydrant of the project, the 3 outdoor fire hydrants are class II outdoor fire hydrants, the outdoor fire hydrants of the class II are connected out from a municipal direct-supply low-pressure system outdoor fire pipe network and do not need to be arranged in the range of 5-40 meters of the access openings, but the number and the flow correspond to the water pump adapters, the distance to the water pump adapters is required according to the rule 1, 5.4.7, and the distance is preferably 15-40 meters, the indoor fire hydrant system is firstly selected according to the requirements of 'water-eliminating rule 1' 7.1.3 and 7.1.5, a wet fire water supply system is not used in principle, but the indoor fire hydrant system has particularity for some projects, the ground transfer station hall, the matched management room of an interlayer and the fast-selling shop area of the next floor of the project all have concentrated heating facilities, the lowest environmental temperature in winter can be ensured to be not lower than 5 ℃, the rest non-heating areas mainly comprise a passenger taxi, a bus and a social vehicle parking due to the functions, the areas all have a certain amount of people flow or vehicle flow, certain heat can be brought to the environment, the heat preservation of the underground building is obvious, and the project finally adopts the wet indoor fire hydrant system by combining the practical experience of local co-walking, the electric heat tracing wire is arranged on a fire fighting pipeline in a non-heating area and is controlled by an environmental temperature sensor, when the environmental temperature is lower than 5 ℃, the electric heat tracing wire is automatically connected with a power supply, the electric heat tracing wire of the fire fighting pipeline does not belong to the fire fighting electric equipment in the statement of the clause of 'construction rule 3' 10.1.1 strictly, the electric heat tracing wire is wound on the fire fighting pipeline, if an insulating layer of the heat tracing wire is burnt during fire, an automatic water spraying system works at the moment, a nozzle sprays water onto the heat tracing wire, an electric leakage accident easily occurs, and during fire, water in the fire fighting pipeline network is in a flowing state due to the opening of fire fighting facilities, and even if an electric heat tracing power supply is cut off, the water in the pipeline cannot freeze in a short time to influence fire fighting rescue.
Example three:
as shown in fig. 1, an embodiment of the present invention provides a construction method for a fire protection system of an underground public transport junction project, which is further expanded according to the contents of the second embodiment:
the main pump of the indoor fire hydrant needs to be selected after the indoor fire hydrant is arranged, according to the requirement of 10.1.7 of a water-eliminating gauge 1, the design lift of the fire pump consists of resistance loss, water supply height difference and design pressure required by the most unfavorable fire extinguishing facility, the project is a building with one floor above the ground and three floors below the ground, and the height of the high clearance of one floor is more than 8 meters, so the 'unfavorable point' of the project cannot be directly selected from the indoor fire hydrant which is farthest from a pump room in the geometric sense, and the project needs to be obtained through calculation and comparison. Firstly, selecting dynamic pressure of a bolt port of an indoor fire hydrant at three underground layers and designing a lift P1 according to 0.25MPa, then selecting dynamic pressure of a bolt port of an indoor fire hydrant at one above-ground layer and designing a lift P2 according to 0.35MPa, and finally calculating that P2 is greater than P1, so that P2 is used as a design lift of a main pump of the indoor fire hydrant, the dynamic pressure of the bolt port of the indoor fire hydrant at the upper layer at a disadvantageous point under the P2 design lift is not less than 0.35MPa, namely, the dynamic pressure of the bolt port of each indoor fire hydrant at each underground layer of the whole building is greater than 0.35MPa and is not more than 0.50MPa according to the corresponding relation between the dynamic pressure of the bolt port of the indoor fire hydrant and the flow, the problem whether to set up high-order fire water tank is finally considered in the setting of indoor fire hydrant, when the interim high-pressure water supply system is adopted in indoor fire control, should set up high-order fire water tank in principle, but engineering ground building is a big headroom, there is special figurative steel construction roofing in the large-span, it is unreal to set up the holding water tank room of a concrete structure on the roofing, 2 nd item in "water eliminating rule 1"6.1.9 has clear and has confirmed under the condition that sets up the high-order water tank and has difficulty, agree to only set up the surge damping pump, because the ground building shape is similar to the subway station, the concrete position of setting is in the water eliminating rule allowed range and is managed by the coordinated operation of the same owner, provide standardization, standardization of fire extinguishing system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A construction method of a fire-fighting system of an underground public transport hub project is characterized by comprising the following steps: the method comprises the following steps:
the first step is as follows: determining a water supply scheme, a fire pump room and a water pool;
the second step is that: selecting a water source for supplying fire-fighting water;
the third step: setting an outdoor fire hydrant, and selecting the position of the outdoor fire hydrant;
the fourth step: setting an indoor fire hydrant, selecting the indoor fire hydrant and selecting a high-level fire water tank;
and in the first step, the arrangement positions of the fire pump room and the water pool of the water supply scheme need to be considered, the fire pump room and the water pool are arranged on an interlayer or an overground layer according to the engineering implementation condition, and the independent arrangement positions of the fire pump room and the water pool ensure the protection radius of a fire water intake.
2. The construction method of the underground public transport junction engineering fire-fighting system according to claim 1, characterized in that: the selective water supply of the fire-fighting water source in the second step is to improve the water source for the fire-fighting system by utilizing a municipal water supply pipeline, a fire-fighting water pool is arranged in the fire-fighting system, the fire-fighting water pool stores indoor and outdoor fire-fighting water consumption required by a fire, after the fire-fighting water source is determined, the flow of the fire hydrant is carried out by a water supply scheme, and the water supply scheme adopts low-pressure municipal water supply pipe directly or outdoor fire-fighting water supply and adopts temporary high-pressure to provide two methods to cooperate with the implementation engineering for selection.
3. The construction method of the underground public transport junction engineering fire-fighting system according to claim 1, characterized in that: in the third step, the outdoor fire hydrant is arranged at a position which is selected to respectively discuss the outdoor fire arrangement into a ground building and an underground building, the class I outdoor fire hydrant or the class II outdoor fire hydrant is arranged on the fire fighting surface of the ground building, and the class I outdoor fire hydrant or the class II outdoor fire hydrant is specifically selected to be set according to the engineering condition, the underground building part is arranged according to the characteristics of the entrance and the exit, the specific fire fighting surface and the fire fighting mode that firemen enter the underground space through the entrance and the exit to extinguish fire, so that the fire hydrant position is arranged.
4. The construction method of the underground public transport junction engineering fire-fighting system according to claim 1, characterized in that: and in the fourth step, the indoor fire hydrant system is selected according to the indoor fire hydrant, the wet fire fighting water supply system cannot be used for selecting the indoor fire hydrant system, but for the engineering specificity, the wet fire fighting water supply system can be used according to the concrete environment distribution of the engineering, and when the fire fighting pipeline is heated and insulated in a non-heating area according to the engineering environment, the heating and insulation treatment of the fire fighting pipeline is considered according to the non-fire fighting load.
5. The construction method of the underground public transport junction engineering fire-fighting system according to claim 1, characterized in that: and selecting the type of the indoor fire hydrant main pump by selecting the indoor fire hydrant arranged on the indoor fire hydrant in the fourth step, wherein the design lift of the fire pump consists of resistance loss, water supply height difference and the design pressure required by the fire extinguishing facility with the worst point, determining the unfavorable point according to the floor height of the project, and determining the design lift of the fire pump according to the unfavorable point.
6. The construction method of the underground public transport junction engineering fire-fighting system according to claim 1, characterized in that: and in the fourth step, the problem about the arrangement of the high-level fire water tank is considered for the selection of the high-level fire water tank arranged by the indoor fire hydrant, the high-level fire water tank is judged according to the ground of the project, the occupied area of the high-level fire water tank, the placement area of the project and the bearing capacity of the project are verified, and the high-level fire water tank is specifically determined to be coordinated with the same owner to operate and manage within the allowable range of a water consumption rule.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117329703A (en) * | 2023-10-07 | 2024-01-02 | 中国建筑第八工程局有限公司 | Water heating device and method of ground source heat pump |
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