CN223243078U - Heat exchange and heat preservation integrated assembled energy wall system for subway station - Google Patents

Abstract

The utility model relates to a heat exchange and heat preservation integrated assembled energy wall system of a subway station, which comprises an assembled energy wall, a machine room heat pump unit, an air conditioner tail end and a conveying and distributing system, wherein the assembled energy wall is positioned between a structural wall and a wall separation wall of the subway station and is close to the soil side, an internal pipeline is arranged in the assembled energy wall, two ends of the internal pipeline are respectively connected into the machine room heat pump unit through the conveying and distributing system, heat or cold is released into the soil after heat exchange in the machine room heat pump unit, a first heat exchange loop is formed, and the air conditioner tail end absorbs indoor cold or heat and enters the machine room heat pump unit through the conveying and distributing system, so that a second heat exchange loop is formed, and indirect heat exchange is realized with the first heat exchange loop through the machine room heat pump unit. The utility model adopts the assembly type standardized prefabrication, can reduce the influence on the mechanical property of the wall body, is not limited in the arrangement form of the buried pipe, can shorten the construction period, reduces the loss of building materials and the waste of resources, and is convenient to install and use.

Description

Heat exchange and heat preservation integrated assembled energy wall system for subway station

Technical Field

The utility model relates to the technical field of assembly type buildings, in particular to a heat exchange and heat preservation integrated assembly type energy wall system for a subway station.

Background

The energy underground structure is a novel building energy-saving technology developed on the basis of the soil source heat pump technology, and is characterized in that heat exchange pipes are arranged by utilizing all underground structural members of a building or a structure per se to form an underground heat exchange loop of a ground source heat pump system. The underground diaphragm wall is widely used as a soil retaining structure of a subway station or a deep foundation pit foundation of a high-rise building foundation, and the heat exchange tubes are buried in the underground diaphragm wall and used as heat exchange members, so that the heat pump technology can be utilized to develop shallow geothermal energy in surrounding rock-soil mass.

The existing energy wall mainly embeds a heat exchange tube into a supporting structure of an underground building and comprises an energy underground continuous wall and an energy row pile wall. The energy underground diaphragm wall is characterized in that a heat exchange pipe is embedded into the underground diaphragm wall, the heat exchange pipe is bound on a reinforcement cage of the underground diaphragm wall, and then concrete is poured. The energy discharging pile wall is formed by fixing a heat exchange pipe on a reinforcement cage of a structural pile and then pouring concrete. The combination mode of the two heat exchange pipes and the underground structure is that the arrangement form of the buried pipes is limited by the reinforcement cage in the continuous wall, and meanwhile, the heat source in the underground structure can also influence the temperature stress of the underground structure. Moreover, the two modes adopt site cast-in-situ construction, so that the construction difficulty is high, the period is long, the construction material loss is high, and the energy conservation and carbon reduction are not facilitated.

Therefore, there is a need for new solutions that overcome the drawbacks of underground support energy wall systems.

Disclosure of Invention

The utility model aims to provide a heat exchange and heat preservation integrated assembled energy wall system for a subway station, so as to solve the construction problem of the existing on-site construction energy wall.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a heat exchange and heat preservation integrated assembled energy wall system of a subway station comprises an assembled energy wall, a machine room heat pump unit, an air conditioner tail end and a transmission and distribution system;

the assembled energy wall is positioned between the structural wall and the wall-separating wall of the subway station and is close to the soil side;

The assembled energy wall is internally provided with an internal pipeline, two ends of the internal pipeline are respectively connected into the machine room heat pump unit through the transmission and distribution system, heat or cold is released into the soil after heat exchange in the machine room heat pump unit, a first heat exchange loop is formed, the tail end of the air conditioner absorbs the indoor cold or heat and then enters the machine room heat pump unit through the transmission and distribution system, a second heat exchange loop is formed, and energy transfer is carried out between the air conditioner and the first heat exchange loop through the machine room heat pump unit.

Further, a gap is formed between the assembled energy wall and the wall separating wall, so that an air layer is formed.

Furthermore, the internal pipeline is a large-pipe-diameter heat exchange pipe.

Further, the assembled energy wall comprises a vapor chamber and a heat insulation plate, a buried pipe layer is arranged between the vapor chamber and the heat insulation plate, and the large-pipe-diameter heat exchange pipe is arranged in the buried pipe layer.

Furthermore, a pipe groove is formed in the surface of the buried pipe layer, and the large-pipe-diameter heat exchange pipe is embedded into the pipe groove.

Further, the internal pipeline is a capillary network grid.

Further, the assembled energy wall comprises a heat insulation plate, a buried pipe layer is arranged on one side of the heat insulation plate, and capillary network grids are arranged on the surface of the buried pipe layer.

Further, the buried pipe layer is a cement fiberboard.

Further, aluminum foil is adhered to the surface of the heat insulation plate.

Furthermore, the assembled energy wall is a rectangular unit module, a plurality of unit modules are spliced in an array mode to form a large-area wall, and the internal pipelines of the unit modules are connected in series.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a heat exchange and heat preservation integrated assembled energy wall system for a subway station, which adopts an assembled mode for standardized prefabrication, can reduce the influence on the mechanical property of a wall body, is not limited in the arrangement form of buried pipes, can shorten the construction period, reduces the loss and the resource waste of building materials, reduces the environmental pollution, and is convenient to install and use.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other embodiments of the drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the system composition of the present utility model.

Fig. 2 is a schematic view of an assembled energy wall installation.

Fig. 3 is a block diagram of an assembled energy wall.

FIG. 4 is a diagram of the internal large diameter heat exchange tube piping structure of the fabricated energy wall.

FIG. 5 is a block diagram of an internal large diameter heat exchange tube piping structure assembled from a plurality of fabricated energy walls.

Fig. 6 is a diagram of the internal capillary tubing structure of the fabricated energy wall.

The marks in the figure are as follows:

The system comprises a 1-machine room heat pump unit, a 2-transmission and distribution system, a 3-assembled energy wall, a 4-air conditioner tail end, a 5-soil side, a 6-structure wall, a 7-air layer, an 8-wall-separating wall and a 9-station side;

31-soaking plate, 32-buried pipe layer, 33-heat insulation plate and 34-aluminum foil.

321-Water supply pipe, 322-water return pipe, 323-heat exchange pipe, 324-water collecting pipe and 325-row buckle.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "connected," "disposed," and the like are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The utility model provides a heat exchange and heat preservation integrated assembled energy wall system for a subway station, which comprises an assembled energy wall 3, a machine room heat pump unit 1, a transmission and distribution system 2 and an air conditioner tail end 4. The assembled energy wall 3 is located between the structural wall 6 and the wall-off wall 8 of the subway station and is close to the soil side 5. The machine room heat pump unit 1 is positioned in the machine rooms at two sides of the hall layer, and the transmission and distribution system 2 and the air conditioner tail end 4 are positioned in each layer structure of the underground station. The air conditioning terminal may employ a fan coil, an air handling unit, or a radiant panel.

As shown in figure 1, the utility model fully utilizes the cavity between the underground station structural wall 6 and the wall-separating wall 8, and the assembled energy wall system is arranged in the cavity to form the underground heat exchange device of the underground station energy wall heat exchanger serving as the soil source heat pump, thus being applicable to newly-built underground stations and being convenient for modifying the energy system of the existing underground stations. The system takes soil as a cold/heat source, an energy wall as an underground heat exchanger of a soil source heat pump, and a compressor in a heat pump unit applies work to a refrigerant in summer so as to perform vapor-liquid conversion circulation. The method comprises the steps of absorbing waste heat discharged from a room into a chilled water circulation pipeline through evaporation of a refrigerant in a heat exchanger into the refrigerant, condensing the refrigerant in the heat exchanger while circulating the refrigerant, absorbing heat carried by the refrigerant through waterway circulation, finally entering an energy wall system through waterway circulation, releasing the heat into soil through the energy wall to achieve the aim of supplying cold for a station, and extracting the heat from the soil by the energy wall in the winter just opposite to heat supply for rooms with heat supply requirements such as equipment management rooms in the station. The underground space is reasonably utilized, resources are saved, the traditional cooling tower can be replaced, and the problems that the ground space of the cooling tower is difficult to sign and attractive in appearance and the like are solved.

The structural wall 6 is a common reinforced concrete structure, and the thickness of the structural wall is generally 700-1000mm, and the specific practice is according to the building related requirements. The wall 8 is also called a damp-proof wall, and is an additional wall arranged on the inner side of the outer wall of the structure. The main purpose is to eliminate and reduce the influence of the outer wall leakage water on the internal use and the appearance of the underground space. The public area of the underground station is mostly formed by dry hanging enamel steel plates, porcelain aluminum plates, stones and other materials. The cement product plates such as the multipurpose fiber cement plates, the calcium silicate plates and the like in the equipment management area are hung dry as the wall-separating wall 8. The wall 8 is made of cement fiber board with the thickness of 50-100mm. The cement fiber board has higher strength, low surface water absorption and good sound insulation effect. The inner surface of the cavity side of the wall 8 is sprayed with a low-emissivity coating or is laid with a low-emissivity smooth aluminum tin film, namely aluminum foil 34, and the surface of the coating is subjected to smoothing treatment to reduce the radiation heat exchange quantity between the inner surface of the cavity side of the wall 8 and other surfaces and the convection heat exchange quantity between the radiation heat exchange quantity and the air in the cavity, thereby reducing the heat transfer quantity entering the station through the enclosure structure.

An internal pipeline is arranged in the assembled energy wall 3 and exchanges heat with surrounding soil, so that the aim of cooling or heating for subway stations is fulfilled. The two ends of the internal pipeline are respectively connected into the machine room heat pump unit 1, heat is exchanged in the machine room heat pump unit 1 through a condenser/evaporator, then heat/cold is released into the soil, a first heat exchange loop is formed, the air conditioner tail end 4 absorbs the indoor cold/heat and then enters the machine room heat pump unit 1 through the transmission and distribution system 2, a second heat exchange loop is formed, and energy transfer is carried out with the first heat exchange loop through the machine room heat pump unit 1.

The assembled energy wall 3 and the wall-separating wall 8 have a gap therebetween, and an air layer 7 is formed. The combination of the structural wall 6, the assembled energy wall 3, the air layer 7 and the wall separating wall 8 can play a role in heat preservation and can also be used for heat exchange, so that an assembled structure integrating heat exchange and heat preservation of a subway station is formed. The air layer 7 is equivalent to a waterproof layer and a second layer of heat insulation material of the energy wall system, has the thickness of 100-250mm, and has the functions of preventing underground water from penetrating into the station and reducing heat in the energy wall from being transferred to the station side so as to influence the in-station thermal environment. When the energy wall system is arranged in a public area of a station, the thickness of the cavity is 200-250mm. When the energy wall system is arranged in the equipment and the management room of the station, the thickness of the cavity is 100-150mm.

In the utility model, the internal pipeline of the assembled energy wall 3 can adopt two forms of large-pipe-diameter heat exchange pipes or capillaries:

Example 1:

When the internal pipeline is a large-pipe-diameter heat exchange pipe, the assembled energy wall 3 comprises a soaking plate 31 and a heat insulation plate 33, a buried pipe layer 32 is arranged between the soaking plate 31 and the heat insulation plate 33, and the large-pipe-diameter heat exchange pipe is arranged in the buried pipe layer 32. The buried pipe layer 32 is a cement fiber plate, the surface of which is provided with a pipe groove, and the large-pipe-diameter heat exchange pipe is embedded in the pipe groove.

In this embodiment, the vapor chamber 31 is provided to increase uniformity of heat transfer, and has a thickness of 2mm. The heat dissipation capability of the vapor chamber 31 is stronger, and the temperature is more uniformly diffused to the surrounding soil. Copper plates, aluminum alloys, stainless steel are currently the most common soaking plate materials. Copper has good ductility and stronger heat conduction capacity, so the copper plate is preferably used as the vapor chamber, and the heat conduction performance is good.

Example 2:

when the internal pipeline is a capillary network grid, the assembled energy wall 3 comprises a heat insulation plate 33, one side of the heat insulation plate 33 is provided with a buried pipe layer 32, and the capillary network grid is arranged on the surface of the buried pipe layer 32. The buried pipe layer 32 is a cement fiberboard and the capillary grid is bonded to the buried pipe layer 32.

In this embodiment, the capillary distance is small (5 mm-40 mm), the heat exchange area is large, and the heat exchange is uniform, so that the vapor chamber 31 is not arranged, and the buried pipe layer 32 is directly clung to the inner side of the structural wall 3.

In the two embodiments, the buried pipe layer panel adopts cement fiber plates with the thickness of 50mm, when the large-pipe-diameter heat exchange pipe is adopted, the heat exchange pipe groove is prefabricated on the panel, the arrangement of the heat exchange pipe is convenient, and the pipe faces one side of the soaking plate. The branch pipe grooves are horizontally arranged in a serpentine shape, the main pipe is vertically arranged, the holes for connecting the branch pipe with the water supply and return main pipe are reserved on the panel, the heat exchange coil pipe is made of high-temperature compression-resistant and corrosion-resistant crosslinked polyethylene pipe, the outer diameter is 25mm, and the wall thickness is 2.3mm. The distance between the heat exchange tubes is preferably 0.3m, the inlet and the outlet of the heat exchange tubes are reserved with a certain length, extending out of the wall and being positioned on the outside of the wall, convenient later period the water collector is connected. Note that the rubber plug is used for blocking the pipe orifice in the wall body carrying process, so that foreign matters and the like are prevented from entering the pipeline to block the pipeline, and the rubber plug is taken out after the installation is completed. When the capillary tube is used as the heat exchange tube, the capillary network grid material adopts tripropylene, the main tube diameter is 20 x 2mm, the branch tube diameter is 3.5-4.5mm, the wall thickness of the branch tube is 0.5-0.8mm, and the tube spacing is 20mm. The main pipeline is reserved with a horizontal pipe groove, the capillary network is tightly attached to the cement fiberboard, and the plastic row of the capillary network is tightly fastened and stuck on the surface of the cement fiberboard by using an adhesive.

In the above two embodiments, the heat insulation board 33 can effectively block the heat exchange between the energy wall heat exchanger and the station side, so as to avoid the heat carried in the cooling water from being transferred into the station. The insulation board 33 is extruded polystyrene foam insulation board (XPS) with a thickness of 80mm. XPS coefficient of heat conductivity is lower, has good thermal insulation performance, compressive resistance and shock resistance, and the water absorption is extremely low, and dampproofing, anticorrosion and prevention of seepage performance are splendid. Aluminum foils 34 are adhered to the surfaces of the heat preservation plates 33, emissivity is close to 0, and radiation heat exchange quantity between the assembled energy wall and other wall surfaces of the cavity can be reduced. The adoption of the smooth-surface aluminum tin film can reduce the convection heat exchange coefficient of the inner side surface of the heat preservation layer so as to reduce the convection heat exchange quantity.

The layers of the assembled energy wall are fixed by screws or round nails. When the water pipe is fixed, the position of the shooting nail should be kept away from the position of the pipeline paved in the wall surface so as to avoid the water pipe from being broken.

The thickness of the whole assembled energy wall is 130-135mm, the size is 2.4x1.2 m and 1.2x1.2 m, the assembled energy wall is directly fixed on the structural wall by using screws, meanwhile, the position of a pipeline paved in the wall surface is avoided, the bottom is tightly attached to the inner side of the structural wall, and the aluminum foil membrane paved on the heat insulation layer is exposed in the cavity.

Prefabricated building is a direction of development for future buildings. Most of the construction work of the fabricated building is performed in factories, and thus, the construction period of the fabricated building is shorter than that of the conventional cast-in-place building. Meanwhile, the assembly type construction can also realize low environmental pollution and low carbon emission, and meets the development requirement of green buildings. The utility model adopts the idea of assembly construction, the assembled energy wall 3 is a rectangular unit module, can be produced in factory standardization, can be designed into various types according to actual needs and areas and thicknesses, a large-area wall body is formed by splicing a plurality of unit modules in an array manner, and the internal pipelines of the plurality of unit modules are mutually connected in series, as shown in fig. 5 and 6. During construction, the unit modules are only needed to be spliced and connected with the pipelines, so that the construction can be fast carried out. The arrangement form of the buried pipes is not limited, meanwhile, the construction period can be shortened, the loss of building materials and the resource waste are reduced, the installation is convenient, the use is convenient, and the defects in the prior art can be overcome. Specifically, the internal piping of each unit module is connected to the main supply-return water pipe by means of a plug-in pipe fitting, as shown in fig. 4.

The utility model has the following technical advantages:

(1) The assembled energy wall is positioned in the cavity between the underground station structure wall and the wall separating wall, and is combined with the underground enclosure structure to exchange heat, so that the defect of large floor area of the ground buried pipe of the traditional ground source heat pump is overcome. In addition, the assembled energy wall can transfer waste heat to surrounding soil in summer, replaces traditional cooling tower equipment, and saves equipment investment and occupied area.

(2) According to the utility model, the air cavity layer and the aluminum foil are added into the assembled wall body, so that the heat dissipation capacity of the heat exchange tube to the existing station side can be reduced during the refrigeration/heating working condition, the heat loss of the whole system is reduced, and the energy efficiency of the whole system is greatly improved.

(3) The assembled energy wall is directly arranged on the inner surface of the structural wall, is convenient to install, does not influence the mechanical properties of the structural wall, and is convenient to reform the energy system of the existing subway station. Meanwhile, the assembly type standardized setting shortens the construction period, improves the construction quality and greatly reduces the carbon emission intensity of the whole life cycle of the building.

The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the utility model pertains, based on the idea of the utility model.

Claims (10)

1. A heat exchange and insulation integrated assembled energy wall system for a subway station, characterized by: It includes an assembled energy wall (3), a heat pump unit in a machine room (1), an air conditioning terminal (4) and a transmission and distribution system (2); The assembled energy wall (3) is located between the structural wall (6) and the wall-free wall (8) of the subway station and is close to the soil side (5); The assembled energy wall (3) is provided with an internal pipeline, and both ends of the internal pipeline are connected to the machine room heat pump unit (1) through the transmission and distribution system (2). After heat exchange in the machine room heat pump unit (1), the heat or cold is released into the soil, forming a first heat exchange loop; the air conditioning terminal (4) absorbs the cold or heat in the room and enters the machine room heat pump unit (1) through the transmission and distribution system (2), forming a second heat exchange loop, and performs energy transfer with the first heat exchange loop through the machine room heat pump unit (1). 2. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 1 is characterized by: There is a gap between the assembled energy wall (3) and the separated wall (8), forming an air layer (7). 3. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 1 is characterized by: The internal pipeline is a large-diameter heat exchange tube. 4. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 3 is characterized by: The assembled energy wall (3) comprises a soaking plate (31) and an insulation plate (33); a buried pipe layer (32) is provided between the soaking plate (31) and the insulation plate (33); and the large-diameter heat exchange pipes are arranged in the buried pipe layer (32). 5. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 4 is characterized by: The surface of the buried pipe layer (32) is provided with a pipe groove, and the large-diameter heat exchange pipe is embedded in the pipe groove. 6. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 1 is characterized by: The internal pipeline is a capillary grid. 7. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 6 is characterized by: The assembled energy wall (3) comprises a heat preservation board (33), a buried pipe layer (32) is provided on one side of the heat preservation board (33), and the capillary grid is arranged on the surface of the buried pipe layer (32). 8. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 5 or 7, characterized in that: The buried pipe layer (32) is a cement fiber board. 9. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 8, characterized in that: Aluminum foil (34) is applied to the surface of the heat-insulating plate (33). 10. The integrated heat exchange and insulation prefabricated energy wall system for a subway station according to claim 9, characterized in that: The assembled energy wall (3) is a rectangular unit module, and a plurality of the unit modules are spliced in an array to form a large-area wall, and the internal pipelines of the plurality of the unit modules are connected in series.