CN112985141B - Partitioned underground continuous wall capable of being used for phase change heat storage - Google Patents

Abstract

The invention discloses a partitioned underground continuous wall that can be used for phase change heat storage, belonging to the technical field of underground continuous wall construction. The invention can realize the partitioning of the existing underground continuous wall, and facilitate the internal layout of the underground continuous wall before pouring At the same time, the variable heat exchange tube is pre-buried, and concrete is poured into the steel plate during the construction of the underground diaphragm wall. After the construction of the underground structure is completed, the variable heat exchange tube is cooled to force the concrete in the steel plate to shrink, which assists in reducing the heat in the steel plate. The concrete is taken out, and the phase change material is filled in the steel plate, and the expansion action of the variable heat exchange tube is triggered to extend in the phase change material, which effectively increases the heat exchange area, efficiently extracts the heat of the soil around the underground diaphragm wall, and strengthens the energy underground. The heat exchange capacity of the structure can not only assist the underground structure in energy recovery and utilization, but also effectively control the construction cost of the underground diaphragm wall, which is beneficial to the popularization and application of the underground diaphragm wall.

Description

Partitioned underground continuous wall capable of being used for phase change heat storage

Technical Field

The invention relates to the technical field of underground continuous wall construction, in particular to a partitioned underground continuous wall capable of being used for phase change heat storage.

Background

The underground continuous wall is a foundation engineering, and adopts a trenching machine on the ground, and under the condition of slurry wall protection, a long and narrow deep groove is excavated along the peripheral axis of the deep excavation engineering, after the groove is cleaned, a steel reinforcement cage is hung in the groove, then underwater concrete is poured by using a conduit method to construct a unit groove section, and the steps are carried out section by section, so that a continuous reinforced concrete wall is constructed underground to be used as a structure for intercepting water, preventing seepage, bearing and retaining water.

Underground diaphragm walls have been and are being used in many aspects of foundation engineering in place of many traditional construction methods. In its early stage, it is basically used as a diaphragm wall or a temporary retaining wall. Increasingly, they are used as part of structures or as host structures through the development and use of many new technologies, new devices and new materials.

However, the existing underground continuous wall needs to provide a certain protection and support effect in the initial stage, so that a reinforced concrete structure is mostly adopted, and after the underground structure is excavated and poured, the underground continuous wall does not take the effect any more, so that the control on the construction cost is undoubtedly unfavorable.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a partitioned underground continuous wall for phase change heat storage, which can realize partitioning of the existing underground continuous wall, is convenient for arranging a steel plate in the underground continuous wall before pouring, simultaneously buries a down-conversion heat exchange tube, pours concrete in the steel plate during construction of the underground continuous wall, lowers the temperature through the down-conversion heat exchange tube to force the concrete in the steel plate to shrink after the construction of an underground structure is completed, assists in taking out the concrete in the steel plate, fills a phase change material in the steel plate, triggers the expansion action of the down-conversion heat exchange tube to extend in the phase change material, effectively increases the heat exchange area, efficiently extracts the heat of soil around the underground continuous wall, strengthens the heat exchange capability of an energy underground structure, can assist the underground structure in energy recovery and utilization, and simultaneously effectively controls the construction cost of the underground continuous wall, is beneficial to the popularization and the application of the underground diaphragm wall.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A partition type underground continuous wall capable of being used for phase change heat storage comprises a ground connection wall body, wherein a steel plate is connected in an embedded mode in the ground connection wall body, the steel plate divides the ground connection wall body into a ground connection wall outer partition and a ground connection wall inner partition, a plurality of uniformly distributed common heat exchange tubes and variable heat exchange tubes are embedded in the ground connection wall outer partition and the ground connection wall inner partition respectively, the common heat exchange tubes and the variable heat exchange tubes are vertically arranged, a phase change heat storage material wrapping the variable heat exchange tubes is filled in the ground connection wall inner partition, each variable heat exchange tube comprises a heat exchange tube body and a plurality of uniformly distributed self-expansion deformation layers, the self-expansion deformation layers are connected to the upper end portion of the heat exchange tube body in an embedded mode, a plurality of uniformly distributed expansion holes are formed in each self-expansion deformation layer, a magnetic heat conduction bag is connected in each expansion hole in an embedded mode, and an electric air tube is concentrically arranged in each heat exchange tube body, and a plurality of electromagnets corresponding to the magnetic heat conduction bags are arranged in the electric tube.

Further, magnetic heat conduction package is including connecting in the epitaxial adventitia of expansion hole opening part and connecting in the inboard magnetic inner membrance of epitaxial adventitia, it has the heat conduction filler to fill between epitaxial adventitia and the magnetic inner membrance, and epitaxial adventitia and magnetic inner membrance be package formula structure under normal condition, can hold the heat conduction filler, nevertheless can become cavity sandwich structure under the homonymy extension effect, rely on the distributive nature of heat conduction filler to form the heat-conducting layer of high density to realize high-efficient heat transfer.

Furthermore, the inner end of the outer epitaxial film is connected with a bonding capsule, the inner end of the magnetic inner film is connected with a trigger magnet, a double-material spacer bar is connected between the trigger magnet and the bonding capsule, the trigger magnet is used for being matched with an electromagnet, the original state is maintained under the action of magnetic attraction, the double-material spacer bar is actively unfolded under the action of magnetic repulsion to improve the heat exchange area, the double-material spacer bar plays the roles of the trigger magnet and the bonding capsule which are separated, the outer epitaxial film and the magnetic inner film are shaped simultaneously, single-component curing glue is filled in the bonding capsule, and the single-component curing glue is released after puncture to be combined with a heat-conducting filler and cured to form an efficient heat-conducting film layer.

Furthermore, one end of the double-material spacer rod is made of a hot-melt material, the other end of the double-material spacer rod is made of a rigid stable material, one end of the hot-melt material is connected with the adhesive capsule, one end of the rigid stable material is connected with the trigger magnet, one end of the rigid stable material is used for puncturing the adhesive capsule to release curing glue, the hot-melt material provides support protection at ordinary times, and the melting action is triggered after heating.

Furthermore, the outer membrane of epitaxy is sunken to be formed with a plurality of hidden balls that distribute densely to the inboard, the bottom is inlayed and is connected with the heat conduction silk in hiding the ball, and heat conduction silk one end is located and hides the ball inboard, and the other end runs through and hides the ball and extends to in the heat conduction filler, enlarges the true surface area of outer membrane of epitaxy in effective space with the mode of caving in on the one hand, and on the other hand hides the heat conduction silk, avoids contacting with the concrete in advance and combines to expose in phase change material after the outer membrane of epitaxy expandes and make, promote heat transfer effect by a wide margin.

Furthermore, the inner side of the hidden ball is filled with a fixed body, the adjacent hidden balls are mutually contacted, the fixed body is made of hot melt material or thermal decomposition material, and the fixed body has a fixing effect on the hidden ball, so that the strength of the hidden ball is improved, and the hidden ball can be used for providing support for the external extension film.

Further, the epitaxial outer membrane and the magnetic inner membrane are both made of elastic heat conduction materials, and the heat conduction fillers are mixed according to a mass ratio of 1: 1, the mixture of the heat-conducting carbon fibers and the heat-conducting graphite powder is extruded by the epitaxial outer membrane and the magnetic inner membrane under the bonding action of the curing agent, so that the heat-conducting carbon fibers and the magnetic inner membrane are forced to form a thin heat-conducting membrane layer, the heat resistance is reduced, and the heat exchange capacity is improved.

Further, heat exchange pipe body adopts the metal copper material to make, the electric pipe adopts thermal insulation material to make, adopt elasticity insulation material to make from expansion deformation layer, the heat exchange pipe body has good heat transfer capacity when providing high strength, and the electric pipe is used for isolated heat and avoids causing the loss, can provide the slight deformation of multistage formula for the whole change of variable heat exchange pipe from expansion deformation layer to satisfy the vibrations deviation when taking out the concrete piece, be difficult for causing the rigidity damage to variable heat exchange pipe.

Furthermore, a plurality of heat conducting rods which are uniformly distributed are embedded and connected in the self-expansion deformation layer and are connected with the heat exchange tube bodies at two ends, the heat conducting rods are made of metal heat conducting materials with high elastic coefficients, the heat conducting rods provide certain strength protection, meanwhile, slight elastic deformation is met, and a heat conducting bridge circuit can be formed.

Furthermore, the ground is wall body adopts the heat preservation concrete to make, and ground is wall outer subregion and ground is wall interior subregion and should pre-buried have the steel reinforcement cage even, and ground is wall body even can reduce the heat and in the inside loss of concrete, improves heat exchange efficiency, and the steel reinforcement cage is used for providing ground and is wall body high strength even.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) the scheme can realize the partition of the existing underground diaphragm wall, the steel plate is conveniently arranged inside the underground diaphragm wall before pouring, the down-conversion heat exchange tubes are embedded at the same time, concrete is poured in the steel plate when the underground diaphragm wall is constructed, after the underground structure is constructed, the temperature of the down-conversion heat exchange tubes is firstly reduced to force the concrete in the steel plate to shrink, the concrete in the steel plate is taken out in an auxiliary mode, then phase change materials are filled in the steel plate, the expansion action of the down-conversion heat exchange tubes is triggered to extend in the phase change materials, the heat exchange area is effectively increased, the heat of soil around the underground diaphragm wall is efficiently extracted, the heat exchange capacity of the energy underground structure is enhanced, the energy recycling of the underground structure can be assisted, meanwhile, the construction cost of the underground diaphragm wall is effectively controlled, and the popularization and the application of the underground diaphragm wall are facilitated.

(2) The magnetomotive heat conduction bag comprises an outer extension film connected to the opening of the expansion hole and a magnetomotive inner film connected to the inner side of the outer extension film, heat conduction fillers are filled between the outer extension film and the magnetomotive inner film, the outer extension film and the magnetomotive inner film are of bag type structures in a normal state and can contain the heat conduction fillers, however, the outer extension film and the magnetomotive inner film can be of a hollow sandwich structure under the same-side extension effect, and high-density heat conduction layers are formed by means of the distributivity of the heat conduction fillers, so that efficient heat exchange is achieved.

(3) The inner end of the outer epitaxial film is connected with an adhesive capsule, the inner end of the inner magnetomotive film is connected with a trigger magnet, a double-material spacer bar is connected between the trigger magnet and the adhesive capsule, the trigger magnet is used for being matched with an electromagnet, the original state is maintained under the action of magnetic attraction, the double-material spacer bar is actively unfolded under the action of magnetic repulsion to improve the heat exchange area, the double-material spacer bar plays a role in separating the trigger magnet and the adhesive capsule, the outer epitaxial film and the inner magnetomotive film are shaped at the same time, single-component curing glue is filled in the adhesive capsule, and the single-component curing glue is released after puncture and can be combined with heat-conducting fillers and cured to form an efficient heat-conducting film layer.

(4) One end of the double-material spacer rod is made of hot melt materials, the other end of the double-material spacer rod is made of hard stable materials, one end made of the hot melt materials is connected with the adhesive capsule, one end made of the hard stable materials is connected with the trigger magnet, one end made of the hard stable materials is used for puncturing the adhesive capsule to release curing glue, the hot melt materials are supported and protected at ordinary times, and the melting action is triggered after heating.

(5) The outer membrana of epitaxy is sunken to the inboard and is formed with the hidden ball of a plurality of intensive distributions, the bottom is inlayed in hiding the ball and is connected with the heat conduction silk, and heat conduction silk one end is located and hides the ball inboard, the other end runs through and hides the ball and extends to in the heat conduction filler, enlarge the true surface area of outer membrana of epitaxy in effective space with the mode of caving in on the one hand, on the other hand hide the heat conduction silk, avoid contacting in advance with the concrete and combine, and expose in phase change material after the outer membrana of epitaxy expandes and make, promote heat transfer effect by a wide margin.

(6) The inner sides of the hidden balls are filled with the fixed bodies, the adjacent hidden balls are mutually contacted, the fixed bodies are made of hot melt materials or thermal decomposition materials, and the fixed bodies play a role in fixing the hidden balls, so that the strength of the hidden balls is improved, and the hidden balls can be used for providing support for the external extension outer membrane.

(7) The epitaxial outer membrane and the magnetic inner membrane are both made of elastic heat conducting materials, and the heat conducting fillers are mixed according to a mass ratio of 1: 1, the mixture of the heat-conducting carbon fibers and the heat-conducting graphite powder is extruded by the epitaxial outer membrane and the magnetic inner membrane under the bonding action of the curing agent, so that the heat-conducting carbon fibers and the magnetic inner membrane are forced to form a thin heat-conducting membrane layer, the heat resistance is reduced, and the heat exchange capacity is improved.

(8) The heat exchange pipe body adopts the metal copper material to make, and the electric pipe adopts thermal insulation material to make, and the deformation layer that expands certainly adopts elasticity insulation material to make, and the heat exchange pipe body has good heat transfer capacity when providing high strength, and the electric pipe is used for completely cutting off the heat and avoids causing the loss, can provide the slight deformation of multistage formula for the whole change formula heat exchange pipe from the deformation layer that expands to satisfy the vibrations deviation when taking out the concrete piece, be difficult for causing the rigidity damage to change formula heat exchange pipe.

(9) The self-expansion deformation layer is internally embedded and connected with a plurality of heat conducting rods which are uniformly distributed, the heat conducting rods are connected with the heat exchange tube bodies at two ends, the heat conducting rods are made of metal heat conducting materials with high elastic coefficients, the heat conducting rods provide certain strength protection, meanwhile, slight elastic deformation is met, and a heat conducting bridge circuit can be formed.

(10) The ground is even the wall body and is adopted the heat preservation concrete to make, and ground even the outer subregion of wall and ground even the corresponding pre-buried steel reinforcement cage in district homogeneous phase in the wall, and ground even the wall body can reduce the heat and at the inside loss of concrete, improves heat exchange efficiency, and the steel reinforcement cage is used for providing ground even this body high strength of wall.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic external view of a variant heat exchange tube of the present invention;

FIG. 3 is a schematic structural view of a heat exchange tube of the present invention in a normal state;

FIG. 4 is a schematic view of a hidden ball according to the present invention;

fig. 5 is a schematic structural diagram of a heat exchange tube of the present invention in a heat exchange state.

The reference numbers in the figures illustrate:

the heat exchange tube comprises a ground connection wall body 1, a steel plate 2, a common heat exchange tube 3, a variable heat exchange tube 4, a heat exchange tube 41, a self-expansion deformation layer 42, a magnetic conduction bag 43, an outer extension film 431, an inner magnetic film 432, a heat conduction filler 433, an electric tube 44, a phase change heat storage material 5, a trigger magnet 6, a double-material spacer bar 7, a bonding capsule 8, a hidden ball 9, a heat conduction rod 10, an electromagnet 11, a heat conduction wire 12 and a fixed body 13.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1, a partitioned underground diaphragm wall for phase change heat storage comprises a diaphragm wall body 1, a steel plate 2 is embedded and connected in the diaphragm wall body 1, the steel plate 2 divides the diaphragm wall body 1 into a diaphragm wall outer partition and a diaphragm wall inner partition, a plurality of uniformly distributed common heat exchange tubes 3 and variable heat exchange tubes 4 are respectively embedded in the diaphragm wall outer partition and the diaphragm wall inner partition, the common heat exchange tubes 3 and the variable heat exchange tubes 4 are vertically arranged, a phase change heat storage material 5 wrapping the variable heat exchange tubes 4 is filled in the diaphragm wall inner partition, the variable heat exchange tubes 4 comprise heat exchange tube bodies 41 and a plurality of uniformly distributed self-expansion deformation layers 42, the self-expansion deformation layers 42 are embedded with the heat exchange tubes and connected to the upper end of the body 41, a plurality of uniformly distributed expansion holes are arranged on the self-expansion deformation layers 42, magnetic heat conduction packs 43 are connected in the expansion holes, an electric tube 44 is concentrically disposed in the heat exchange tube body 41.

Even wall body 1 adopts the insulation concrete to make, and even the outer subregion of wall and even the interior subregion homogeneous phase of wall should be pre-buried to have the steel reinforcement cage even, even wall body 1 can reduce the heat in the inside loss of concrete even, improves heat exchange efficiency, and the steel reinforcement cage is used for providing even wall body 1 high strength even.

Referring to fig. 3 and 5, a plurality of electromagnets 11 corresponding to the magnetic heat conduction pack 43 are installed in the electric tube 44, the magnetic heat conduction pack 43 includes an outer extension film 431 connected to the opening of the opening and a magnetic inner film 432 connected to the inner side of the outer extension film 431, a heat conduction filler 433 is filled between the outer extension film 431 and the magnetic inner film 432, the outer extension film 431 and the magnetic inner film 432 are in a bag type structure in a normal state and can contain the heat conduction filler 433, but can be in a hollow sandwich structure under the action of stretching at the same side, and a high-density heat conduction layer is formed by the distribution of the heat conduction filler 433, thereby realizing efficient heat exchange.

The inner end of the outer epitaxial film 431 is connected with an adhesive capsule 8, the inner end of the inner magnetic film 432 is connected with a trigger magnet 6, a double-material spacer bar 7 is connected between the trigger magnet 6 and the adhesive capsule 8, the trigger magnet 6 is used for being matched with the electromagnet 11 and keeping the original state under the action of magnetic attraction, the double-material spacer bar 7 is actively unfolded under the action of magnetic repulsion to improve the heat exchange area, the double-material spacer bar 7 plays a role of separating the trigger magnet 6 and the adhesive capsule 8, the outer epitaxial film 431 and the inner magnetic film 432 are shaped, single-component curing glue is filled in the adhesive capsule 8, and the double-material spacer bar is released after puncture to be combined with the heat-conducting filler 433 and cured to form an efficient heat-conducting film layer.

The epitaxial outer membrane 431 and the magnetic inner membrane 432 are both made of elastic heat conduction materials, and the heat conduction filler 433 is prepared from the following components in a mass ratio of 1: 1, under the adhesive action of the curing agent, the extension outer membrane 431 and the magnetic inner membrane 432 are extruded simultaneously, so that a thin heat-conducting membrane layer is formed, the thermal resistance is reduced, and the heat exchange capacity is improved.

Heat exchange tube body 41 adopts the metal copper material to make, electric pipe 44 adopts thermal insulation material to make, it makes to adopt elasticity insulation material from expansion deformation layer 42, for example, polyurethane foam, heat exchange tube body 41 has good heat transfer capacity when providing high strength, electric pipe 44 is used for isolated heat to avoid causing the loss, from expansion deformation layer 42 can be for the whole slight deformation that provides the multistage formula of change heat exchange tube 4, thereby satisfy the vibrations deviation when taking out the concrete piece, be difficult for causing the rigidity damage to change heat exchange tube 4.

The self-expansion deformation layer 42 is embedded and connected with a plurality of heat conduction rods 10 which are uniformly distributed, the heat conduction rods 10 are connected with the heat exchange tube bodies 41 at two ends, the heat conduction rods 10 are made of metal heat conduction materials with high elastic coefficient, such as aluminum alloy materials, the heat conduction rods 10 provide certain strength protection, meanwhile, slight elastic deformation is met, and a heat conduction bridge circuit can be formed.

The double-material spacer 7 is made of hot-melt material, such as hot-melt resin material, at one end, and hard and stable material, such as metal, copper, iron, aluminum and alloy in the conventional sense at the other end, and the hot-melt material is connected with the adhesive capsule 8 at one end, and the hard and stable material is connected with the trigger magnet 6 at one end, and the hard and stable material is used for puncturing the adhesive capsule 8 to release curing glue, and the hot-melt material provides support protection at ordinary times, and triggers melting action after being heated.

Referring to fig. 4, the outer film 431 is recessed inward to form a plurality of densely distributed hidden balls 9, the bottom end of each hidden ball 9 is connected with a heat conducting wire 12 in an embedded manner, one end of each heat conducting wire 12 is located inside the hidden ball 9, and the other end of each heat conducting wire 12 penetrates through the hidden ball 9 and extends into the heat conducting filler 433, so that on one hand, the real surface area of the outer film 431 in an effective space is enlarged in the recessed manner, on the other hand, the heat conducting wires 12 are hidden, contact and combination with concrete in advance is avoided, and the outer film 431 is exposed to phase change materials after being unfolded, and the heat exchange effect is greatly improved.

The inner sides of the hidden balls 9 are filled with fixed bodies 13, the adjacent hidden balls 9 are in contact with each other, the fixed bodies 13 are made of hot-melt materials or thermal decomposition materials, and the fixed bodies 13 play a role in shaping the hidden balls 9, so that the strength of the hidden balls 9 is improved to support the epitaxial outer film 431.

It is worth noting that the demoulding oil is coated on the whole of the inner wall of the steel plate 2 and the outer wall of the variable heat exchange tube 4, so that the subsequent concrete block can be taken out conveniently.

The invention can realize the partition of the existing underground continuous wall, is convenient for arranging steel plates inside the underground continuous wall before pouring, simultaneously buries the down-conversion heat exchange tubes 4, pours concrete in the steel plates during the construction of the underground continuous wall, reduces the temperature through the down-conversion heat exchange tubes 4 to force the concrete in the steel plates to shrink after the construction of the underground structure is finished, assists in taking out the concrete in the steel plates, fills phase-change materials in the steel plates, triggers the expansion action of the down-conversion heat exchange tubes 4 to extend in the phase-change materials, effectively increases the heat exchange area, efficiently extracts the heat of soil around the underground continuous wall, strengthens the heat exchange capability of the energy underground structure, can assist the underground structure to recycle energy, effectively controls the construction cost of the underground continuous wall, and is beneficial to the popularization and application of the underground continuous wall.

Claims (7)

1. A partitioned underground continuous wall that can be used for phase change heat storage, comprising a ground connecting wall body (1), characterized in that: a steel plate (2) is inlaid and connected in the ground connecting wall body (1), and the The steel plate (2) divides the ground connection wall body (1) into the ground connection wall outer partition and the ground connection wall inner partition, wherein a plurality of uniformly distributed common The heat exchange tube (3) and the variable heat exchange tube (4), and the common heat exchange tube (3) and the variable heat exchange tube (4) are both vertically arranged, and the partitions in the ground connecting wall are also filled with heat exchangers. A phase change heat storage material (5) wrapped by a variable heat exchange tube (4), the variable heat exchange tube (4) comprising a heat exchange tube body (41) and a plurality of uniformly distributed self-expanding deformation layers (42) , and the self-expanding deformation layer (42) is inlaid and connected to the upper end of the heat exchange tube body (41), the self-expanding deformation layer (42) is provided with a plurality of evenly distributed expansion holes, and the expansion holes are inlaid and connected There is a magnetically dynamic heat-conducting package (43), an electrical tube (44) is concentrically arranged in the heat exchange tube body (41), and a plurality of magnetically-dynamic heat-conducting packages (43) are installed in the electrical tube (44). the electromagnet (11); the magnetodynamic heat-conducting package (43) includes an epitaxial outer film (431) connected to the opening of the unfolding hole and a magnetodynamic inner film (432) connected to the inner side of the epitaxial outer film (431), so A thermally conductive filler (433) is filled between the epitaxial outer film (431) and the magnetic inner film (432); the inner end of the epitaxial outer film (431) is connected with an adhesive capsule (8), and the magnetic inner film (431) is connected with an adhesive capsule (8). A trigger magnet (6) is connected to the inner end of the membrane (432), and a double-material spacer (7) is connected between the trigger magnet (6) and the adhesive capsule (8); the epitaxial outer membrane (431) and the magnetic The inner film (432) is made of elastic thermally conductive material, and the thermally conductive filler (433) is a mixture of thermally conductive carbon fiber and thermally conductive graphite powder in a mass ratio of 1:1. 2. A partitioned underground diaphragm wall that can be used for phase change heat storage according to claim 1, characterized in that: one end of the double-material spacer (7) is made of hot-melt material, and the other end is made of rigid stable The end made of the hot-melt material is connected with the adhesive capsule (8), and the end made of the rigid stable material is connected with the trigger magnet (6). 3. A partitioned underground diaphragm wall that can be used for phase change heat storage according to claim 1, characterized in that: the epitaxial outer film (431) is recessed inward to form a plurality of densely distributed hidden spheres (9). ), the inner bottom end of the hidden ball (9) is inlaid and connected with a thermally conductive wire (12), and one end of the thermally conductive wire (12) is located inside the hidden ball (9), and the other end penetrates the hidden ball (9) and extends to the thermally conductive filler (433). 4. The partitioned underground diaphragm wall that can be used for phase change heat storage according to claim 3, characterized in that: the inner side of the hidden balls (9) is filled with shaped bodies (13), and adjacent hidden balls are filled with shaped bodies (13). (9) are in contact with each other, and the shaped body (13) is made of a hot-melt material or a thermally decomposed material. 5. The partitioned underground diaphragm wall that can be used for phase change heat storage according to claim 1, characterized in that: the heat exchange pipe body (41) is made of metal copper material, and the electrical pipe (44) ) is made of heat insulating material, and the self-expanding deformation layer (42) is made of elastic heat insulating material. The partitioned underground diaphragm wall that can be used for phase change heat storage according to claim 5, characterized in that: the self-expanding deformation layer (42) is inlaid and connected with a plurality of uniformly distributed heat-conducting rods (10). ), and the heat-conducting rods (10) are connected to the heat exchange tube bodies (41) at both ends, and the heat-conducting rods (10) are made of metal heat-conducting materials with high elastic coefficient. 7. A partitioned underground diaphragm wall that can be used for phase change heat storage according to claim 1, characterized in that: the ground connecting wall body (1) is made of thermal insulation concrete, and the outer partitions of the ground connecting wall and the Reinforcing cages are pre-buried in the partitions of the ground connection wall.

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