CN111237848B - Direct heating device utilizing abandoned mine and construction method thereof - Google Patents

Abstract

The invention discloses a direct heating device utilizing a waste mine, which comprises a pipeline assembly, a connecting assembly, a protective assembly, a fixing assembly, a water pump and a plate heat exchanger, wherein the connecting assembly comprises a flange seat, a flange head and a fastener; the pipeline assembly comprises a steel pipe, a hose and a conduit, the steel pipe, the hose and the conduit can be mutually matched and connected through a connecting assembly arranged at the end part, the steel pipe is bidirectionally distributed in a shaft of a mine, the hose is distributed in the shaft and a roadway of the mine, one end of the hose is connected with the end part of the steel pipe, the conduit is distributed outside the mine, the conduit is sequentially connected with a water pump and a plate heat exchanger, and the two ends of the conduit are respectively connected to the top ends of the bidirectionally distributed steel pipes; the invention has the advantages of good heating effect, convenient construction, small influence on the environment and high applicability.

Description

Direct heating device utilizing abandoned mine and construction method thereof

Technical Field

The invention relates to the technical field of mine heating, in particular to a direct heating device utilizing an abandoned mine and a construction method thereof.

Background

With the deep mining of mineral resources and the selection of various countries to gradually eliminate traditional fossil energy due to ecological environment problems, a large number of underground roadways and chambers are abandoned. According to statistics, the number of abandoned mines in the world exceeds 100 ten thousand. The waste of resources caused by the abandoned mine brings about serious environmental and social problems, so how to scientifically develop and utilize the resources of the abandoned mine and promote the transformation of resource-exhausted mining areas becomes an important issue in the field of energy environment in the world at present. Because the depth of the mine is deep, the geothermal energy resources contained in the mine are abundant, and therefore, how to reasonably, reliably and permanently utilize the geothermal energy resources is a problem.

Aiming at the problem of resource utilization of the abandoned mine, a method for extracting and utilizing geothermal energy of the abandoned mine is provided; simultaneously, in order to solve the problem that the environment is threatened easily by directly extracting hot water in the abandoned mine and heating in the prior art, and the heating device is blocked easily, the direct heating device with borrow and return in the abandoned mine is provided.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a device capable of directly heating by using an abandoned mine, which has the advantages of good heating effect, convenient construction, small influence on the environment and high applicability.

The second purpose of the invention is to provide a method for construction by using the direct heating device.

In order to solve the technical problems, the invention provides the following technical scheme: a direct heating device utilizing a waste mine comprises a pipeline assembly, a connecting assembly, a protection assembly, a fixing assembly, a water pump and a plate heat exchanger, wherein the connecting assembly comprises a flange seat, a flange head and a fastener, the flange seat and the flange head are respectively arranged at two ends of the pipeline assembly, the end surfaces of the flange seat and the flange head can be matched with each other, and the fastener is connected with the flange seat and the flange head into a whole; the pipeline assembly comprises a steel pipe, a hose and a conduit, the steel pipe, the hose and the conduit are matched and connected with each other through the connecting assembly arranged at the end part, the steel pipe is distributed in a shaft of a mine in two directions, the hose is distributed in the shaft and a roadway of the mine, one end of the hose is connected with the end part of the steel pipe, the conduit is distributed outside the mine and is sequentially connected with the water pump and the plate heat exchanger, and the two ends of the conduit are respectively connected to the top ends of the steel pipe in two directions; the protective assembly comprises a sand cushion layer, buoyancy air bags and a filter grid mesh, the sand cushion layer is paved at the bottom of the roadway and is positioned below the hose in the roadway, the buoyancy air bags are distributed in the shaft and are arranged on the outer side wall of the hose, the filter grid mesh is arranged at the end part of the hose in the roadway, the filter grid mesh protrudes out of the end part of the hose, and the edge of the filter grid mesh is provided with a protruding cutting edge; the fixing assembly comprises a U-shaped rod and a U-shaped hose, the U-shaped inner cavity of the U-shaped rod is clamped on the outer side wall of the steel pipe, the end portion of the U-shaped inner cavity of the U-shaped rod is fixed in the side wall of the shaft, the U-shaped inner cavity of the U-shaped hose is clamped on the outer side wall of the hose, and the end portion of the U-shaped inner cavity of the U-shaped hose is fixed in the side.

Further, the side wall of the flange seat, which is contacted with the flange head, is arranged in a corrugated shape and is filled with a rubber gasket.

Furthermore, the fastener comprises a fastening bolt and a clamping buckle, the adjacent steel pipes are fastened and connected through the fastening bolt, and the adjacent hoses are fastened and fixedly connected through the clamping buckle.

Furthermore, each group of the clamping buckles is provided with a plurality of clamping buckles, one end of each clamping buckle is hinged to the side wall of the flange seat, and the other end of each clamping buckle is provided with a clamping groove and is connected with the flange head in a clamping mode.

Further, the hose includes bellows, connection pad and bracing piece, install the both ends symmetry of bellows the connection pad, evenly distributed is provided with a plurality of groups between the connection pad the bracing piece.

Furthermore, the connecting disc is divided into a first connecting disc and a second connecting disc, the first connecting disc is located at one end where the flange head is installed, and the second connecting disc is located at one end where the flange seat is installed.

Furthermore, the support rod comprises a rod body and one-way limiting blocks, the one-way limiting blocks are uniformly distributed on the outer side wall of the rod body, and the mounting directions are uniform; and one end of the rod body is fixed on the side wall of the end face of the first connecting disc, and the other end of the rod body penetrates through a limiting hole formed in the surface of the second connecting disc.

Furthermore, the length of the buoyancy air bag is the same as that of the supporting rod, and is smaller than that of the corrugated pipe when the corrugated pipe is completely extended.

Furthermore, the pipe bodies of the steel pipe and the hose are both made of heat insulation materials, and a temperature sensor is arranged at the end part of the steel pipe connected with the conduit.

A construction method of a direct heating device by utilizing a waste mine adopts the direct heating device, and comprises the following construction steps:

s1: designing a complete heating scheme according to heating requirements and the heat supply quantity of a mine;

s2: specifically, the steel pipes are installed, the pipes are distributed in a vertical two-way mode along the inner wall of the shaft, and are divided into a water inlet pipeline and a water outlet pipeline which are fixed through the U-shaped rods;

s3: installing a hose, namely installing a vertical part of the hose on the inner wall of a shaft, and sequentially arranging the buoyancy air bag and the U-shaped soft rod;

s4: selecting two groups of roadways at different depths, checking the area where the hose is laid in the roadways, and clearing obstacles;

s5: after the inspection and cleaning are finished, installing the sand cushion layer at the bottom of the roadway;

s6: horizontally laying the hose on the top of the sand cushion layer;

s7: the filter grid mesh arranged at the end part of the hose is arranged in a roadway;

s8: after the shaft and the pipe fittings in the roadway are installed, the water pump is connected with the steel pipes which are laid in the two directions through the guide pipe to form a complete pipe fitting loop, and the water pump is started to perform geothermal water trial pumping;

s9: after successful trial pumping, the plate heat exchanger is installed in a pipe fitting loop to perform heating and heat exchange;

s0: in the heat exchange process, the temperature in the pipe loop can be monitored to adjust, so that different heating and refrigerating effects can be realized.

The invention has the beneficial effects that:

(1) the heating effect is good: the water in the mine is directly extracted for heat extraction, and the heat exchange effect is high;

(2) the construction is convenient: the modular splicing mode is convenient to install, and the efficiency is improved;

(3) the environmental impact is small: the water is pumped from the underground and returned after heat exchange, so that the influence on the underground mine water body is small;

(4) the applicability is good: the horizontal heating pipe is a flexible hose, has low requirements on the terrain, and meanwhile, the filter grid at the water inlet and outlet at the end part of the pipe body can effectively filter impurities to prevent the pipe body from being blocked.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is a schematic view showing an overall plan structure of a direct heating apparatus using abandoned mines according to the present invention.

Fig. 2 is a partial C enlarged structural view of a direct heating apparatus using an abandoned mine according to the present invention.

Fig. 3 is a partial D enlarged structural view of the direct heating apparatus using abandoned mines according to the present invention.

Fig. 4 is a partial E enlarged structural view of the direct heating apparatus using abandoned mines according to the present invention.

Fig. 5 is a schematic view showing a steel pipe connection structure of a direct heating apparatus using an abandoned mine according to the present invention.

Fig. 6 is a schematic view showing a hose connection structure of a direct heating apparatus using abandoned mines according to the present invention.

Fig. 7 is a schematic view showing a plane structure of a screen of a direct heating apparatus using a waste mine according to the present invention.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.

Example 1

Referring to fig. 1 to 7, for a first embodiment of the present invention, a direct heating apparatus using a waste mine is provided, the apparatus includes a pipe assembly 1, a connecting assembly 2, a protective assembly 3, a fixing assembly 4, a water pump 5 and a plate heat exchanger 6, wherein the connecting assembly 2 includes a flange seat 21, a flange head 22 and a fastening member 23, the flange seat 21 and the flange head 22 are respectively disposed at two ends of the pipe assembly 1, and end surfaces of the flange seat and the flange head 22 can be mutually matched, and the fastening member 23 connects the flange seat 21 and the flange head 22 into a whole; the pipeline assembly 1 comprises a steel pipe 11, a hose 12 and a conduit 13, the steel pipe 11, the hose 12 and the conduit 13 can be mutually matched and connected through a connecting assembly 2 arranged at the end part, the steel pipe 11 is bidirectionally distributed in a shaft of a mine, the hose 12 is distributed in the shaft and a roadway of the mine, one end of the hose is connected with the end part of the steel pipe 11, the conduit 13 is distributed outside the mine, the hose is sequentially connected with a water pump 5 and a plate heat exchanger 6, and the two ends of the hose are respectively connected to the top end of the steel pipe 11;

the protection assembly 3 comprises a sand cushion layer 31, buoyancy air bags 32 and a grid net 33, wherein the sand cushion layer 31 is laid at the bottom of the roadway and is positioned below the hose 12 in the roadway, the buoyancy air bags 32 are distributed in the shaft and are arranged on the outer side wall of the hose 12, the grid net 33 is arranged at the end part of the hose 12 in the roadway, protrudes out of the end part of the hose 12, and the edge of the grid net is provided with a protruding cutting edge; the fixing assembly 4 comprises a U-shaped rod 41 and a U-shaped soft rod 42, wherein the U-shaped inner cavity of the U-shaped rod 41 is clamped on the outer side wall of the steel pipe 11, the end part of the U-shaped inner cavity is fixed in the side wall of the shaft, the U-shaped inner cavity of the U-shaped soft rod 42 is clamped on the outer side wall of the hose 12, and the end part of the U-shaped inner cavity is fixed in the side wall of the shaft.

Specifically, the side wall of the flange seat 21 and the flange head 22 contacting each other is provided in a corrugated shape, and is filled with a rubber gasket a, as shown in fig. 5. The fastening member 23 includes a fastening bolt 23a and a snap 23b, and the adjacent steel pipes 11 are fastened and connected by the fastening bolt 23a, and the adjacent hoses 12 are fastened and connected by the snap 23 b. Each group of the snap fasteners 23b is provided with a plurality of snap fasteners, one end of each group is hinged on the side wall of the flange seat 21, and the other end of each group is provided with a snap groove which is in snap connection with the flange head 22.

Further, referring to fig. 6, the hose 12 includes a corrugated tube 12a, a connecting disc 12b and a support rod 12c, the connecting disc 12b is symmetrically installed at two ends of the corrugated tube 12a, and a plurality of sets of support rods 12c are uniformly distributed between the connecting discs 12 b. The connecting disc 12b is divided into a first connecting disc 12b-1 and a second connecting disc 12b-2, the first connecting disc 12b-1 is located at one end of the mounting flange head 22, and the second connecting disc 12b-2 is located at one end of the mounting flange base 21. The supporting rod 12c comprises a rod body 12c-1 and one-way limiting blocks 12c-2, the one-way limiting blocks 12c-2 are uniformly distributed on the outer side wall of the rod body 12c-1, and the mounting directions are uniform; one end of the rod body 12c-1 is fixed on the side wall of the end face of the first connecting disc 12b-1, and the other end of the rod body penetrates through a limiting hole 12b-21 formed in the plate surface of the second connecting disc 12 b-2. The length of the buoyancy bladder 32 is the same as the support rods 12c and is less than the length of the bellows 12a when fully extended. The steel pipe 11 and the hose 12 are made of heat insulating material, and a temperature sensor B is mounted at the end of the steel pipe 11 connected to the conduit 13.

Wherein, as shown in fig. 1, pipeline assembly 1 is the assembly of each monomer pipeline for form the complete return circuit of underground hot water extraction and exhaust, each monomer pipeline passes through coupling assembling 2 and connects, because there is hidden danger factor in the installation environment in pit shaft and the tunnel, consequently need set up protection component 3 and fixed subassembly 4, make pipeline assembly 1 by stably injecing in pit shaft and the tunnel, water pump 5 then is used for driving the flow of groundwater in pipeline assembly 1, plate heat exchanger 6 is as heat transfer unit, convert the heat in the underground hot water into other energy that can directly utilize.

Specifically, the flange seat 21 and the flange head 22 in the connecting assembly 2 can be connected and matched with each other, and the flange seat 21 and the flange head 22 are respectively arranged at two ends of the steel pipe 11 and the hose 12, that is, the flange seat is used for connecting the adjacent steel pipe 11 or the hose 12, so that each single pipe forms a continuous long pipe, the end faces of the flange seat 21 and the flange head 22, which are matched with each other, are corrugated, so that the portability of the connection of the matched end faces is increased, and a rubber gasket A is additionally arranged in the end faces of the flange seat and the flange head, so that the tightness of the connecting part and the air tightness. After the two are matched, the fixing is carried out through a fastener 23 a; the flange seats 21 and the flange heads 22 at the two ends of the steel pipe 11 are different from those at the two ends of the hose 12, because underground water is in the shaft, the steel pipe 11 is adopted above the water surface, the connection of the steel pipe 11 adopts a mode that the fastening bolts 23a fasten the flanges, and the fastening bolts 23a penetrate through the connecting holes formed in the flange seats 21 and the flange heads 22 for connection, so that the method is simple and efficient; the pipelines below the water surface in the mine adopt hoses 12, the clamping buckles 23b are used as fasteners 23 for facilitating underwater connection, the hoses 12 are conveniently connected and matched underwater, the fixed ends of the clamping buckles 23b are hinged to the side wall of the flange seat 21, the movable ends of the clamping buckles are provided with clamping grooves, the clamping grooves are matched with the plate body of the flange head 22, the number of the clamping buckles 23b is increased for improving connection stability, and at least three clamping buckles are arranged in each group and distributed at equal intervals.

Furthermore, the pipelines are arranged in the pipeline assembly 1 in a bidirectional mode, one end of each pipeline is a water inlet pipeline and used for extracting underground hot water from a mine, the other end of each pipeline is a water outlet pipeline and used for returning underground water subjected to heat exchange to the underground, circulation of the underground water is formed, and balance of underground heat is formed through flow of the underground water, so that underground clean heat energy is utilized infinitely, and the pipeline assembly is clean and environment-friendly. It should be noted that the water inlet pipe and the water outlet pipe are both formed by connecting a steel pipe 11 and a hose 12 in a matching manner, the water inlet and the water outlet of the pipe are arranged in a deep mine roadway, a filter grid 33 is fixed at the end parts of the water inlet and the water outlet, the filter grid protrudes out of the end part of the hose 12 and is used for filtering large impurities in underground water entering the pipe, and a cutting edge arranged at the edge of the filter grid is used for piercing plastic or other garbage impurities possibly existing in the underground water, so that the influence on water pumping and water drainage is avoided.

Preferably, the mine pipeline assembly 1 adopts a mode of combining a steel pipe 11 and a hose 12, and the water pump 5 and the plate heat exchanger 6 are connected into the pipeline assembly 1 by a conduit 13 outside a mine; the hose 12 is composed of a corrugated pipe 12a with a one-way stretching support rod 12c, concretely, with reference to figure 6, connecting discs 12b are fixed at two ends of the corrugated pipe 12a, the support rods 12c are provided with a plurality of groups and are evenly distributed between the two connecting discs 12b, the support rods 12c are rod bodies 12c-1 with one-way limiting blocks 12c-2, the one-way limiting blocks 12c-2 are in right-angle triangle shapes, right-angle sides are perpendicular to the rod bodies 12c-1, and the aperture of limiting holes 12b-21 is smaller than the total diameter of the rod bodies 12c-1 and the one-way limiting blocks 12c-2, so that the support rods 12c can only stretch from the connecting discs 12b in one way, and the contracted hose 12 is integrally unfolded by stretching the support rods 12c after the hose 12 is.

In the protection assembly 3, the sand cushion 31 is laid at the bottom of the mine roadway, and the top end of the sand cushion is used for erecting the hose 12, so that the hose 12 or the buoyancy air bag 32 is prevented from being damaged by sharp sandstone walls in the mine roadway; the buoyancy air bag 32 is used for protecting the hose 12, offsetting the gravity of the hose 12, reducing the damage of the gravity to the bent part of the corrugated pipe 12a caused by extrusion, and prolonging the service life of the hose 12; in the fixing assembly 4, the U-shaped rod 41 is made of a rigid material and used for fixing the steel pipe 11, the U-shaped port of the U-shaped rod is clamped on the outer wall of the pipe body of the steel pipe 11 to be attached to the inner cavity side wall of the shaft, the U-shaped end of the U-shaped soft rod 42, which is attached to the hose 12, has certain elasticity so as to protect the surface of the hose 12, and the connecting end of the U-shaped soft rod 42 is rigid and fixed on the rock wall of the shaft.

Furthermore, the length of the support rod 12c is the same as that of the buoyancy airbag 32, and the buoyancy airbag 32 for each group corresponds to the support rod 12c, and the corrugated tube 12a is in a contracted state in an initial state, and is in an expanded state after being installed and stretched, but is not completely expanded, so that the toughness and strength of the corrugated tube 12a are maintained, the vibration resistance of the corrugated tube 12a is improved, and the service life of the tube body is prolonged. Preferably, the pipe body 11 and the hose 12 are made of heat-insulating materials, so that the water inlet and the water outlet are both located in a deep mine roadway, and the pipe body moves to a shallow layer in the transmission process, so that the heat insulation is realized by reducing the heat loss of underground water in the transmission process. The temperature sensor B is arranged to monitor the water temperature change of the water outlet of the water inlet pipeline and the water temperature change of the water inlet of the water outlet pipeline, so that people can conveniently exchange heat according to actual needs.

Example 2

Different from the embodiment 1, the construction method of the direct heating device comprises the following construction steps:

s1: designing a complete heating scheme according to heating requirements and the heat supply quantity of a mine;

s2: specifically, the steel pipe 11 is installed, pipes are distributed in a vertical two-way mode along the inner wall of a shaft, and the pipes are divided into a water inlet pipeline and a water outlet pipeline and are fixed through a U-shaped rod 41;

s3: the hose installation is carried out by firstly installing the vertical part of the hose 12 on the inner wall of the shaft, and sequentially arranging the buoyancy air bag 32 and the U-shaped soft rod 42;

s4: selecting two groups of roadways at different depths, checking the area where the hose 12 is laid in the roadways, and clearing obstacles;

s5: after the inspection and cleaning are finished, installing a sand cushion 31 at the bottom of the roadway;

s6: horizontally laying the hose 12 on the top of the sand cushion 31;

s7: a filter grid 33 arranged at the end part of the hose 12 is arranged in the roadway;

s8: after the shaft and the pipe fittings in the roadway are installed, the water pump 5 is connected with the steel pipe 11 which is laid in the two directions through the guide pipe 13 to form a complete pipe fitting loop, and the water pump 5 is started to perform geothermal water trial pumping;

s9: after successful trial pumping, the plate heat exchanger 6 is installed in the pipe loop to perform heating and heat exchange;

s10: in the heat exchange process, the temperature in the pipe loop can be monitored to adjust, so that different heating and refrigerating effects can be realized.

Compared with the embodiment 1, further, in the installation process, the pipeline assembly 1 is divided into two groups to be laid, namely, the water inlet pipeline and the water outlet pipeline, and the two groups of pipelines are laid from the top of the shaft to the deep roadway, wherein the hose 12 is installed from the vertical part of the shaft, when the installation is carried out, one end of the software 12 in the contraction state is firstly connected, then the software is stretched to the designated length, meanwhile, the supporting rod 12c is shifted to be as long as the corrugated pipe 12a, then the corrugated pipe 12a is limited on the side wall of the inner cavity of the shaft through the U-shaped soft rod 42, then the uninflated buoyancy airbag 32 is installed at the outer side of the edge of the hose 12, after the installation and fixation work of the hose 12 is finished, the inflation is carried out from the inflation port of the buoyancy airbag 32, so that the buoyancy generated by the hose 12 can counteract the self gravity of the hose 12, and the aim is that the hose 12 is, when the bellows 12a is always under maximum tension at the bend, it is easily damaged, thereby affecting the useful life of the hose 12. And when turning to the horizontal segment installation in tunnel, adopt the steel pipe 11 of buckling to carry out the switching, and lay in the top of sand bed 31 at horizontal segment's hose 12, inlet channel and outlet conduit are located the mine tunnel of the different degree of depth respectively, and aim at, the temperature of groundwater is different in the mine tunnel of the different degree of depth, can realize heating and refrigerated different effects when forward and reverse water extraction, improves the range of application of this device.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims (10)

1. The utility model provides an utilize direct heating installation of abandonment mine which characterized in that: comprises a pipeline component (1), a connecting component (2), a protective component (3), a fixed component (4), a water pump (5) and a plate heat exchanger (6), wherein,

the connecting assembly (2) comprises a flange seat (21), a flange head (22) and a fastener (23), the flange seat (21) and the flange head (22) are respectively arranged at two ends of the pipeline assembly (1), the end faces of the flange seat and the flange head (22) are polygonal end faces which can be matched with each other, and the fastener (23) is connected with the flange seat (21) and the flange head (22) into a whole;

the pipeline assembly (1) comprises a steel pipe (11), a hose (12) and a conduit (13), the steel pipe (11) is bidirectionally distributed in a shaft of a mine, the hose (12) is distributed in the shaft and a roadway of the mine, one end of the hose is connected with the end part of the steel pipe (11), the conduit (13) is distributed outside the mine, the hose is sequentially connected with the water pump (5) and the plate heat exchanger (6), and two ends of the hose are respectively connected to the top end of the bidirectionally distributed steel pipe (11);

the protection assembly (3) comprises a sand cushion layer (31), buoyancy air bags (32) and a grid net (33), the sand cushion layer (31) is laid at the bottom of a roadway and is positioned below the hose (12) in the roadway, the buoyancy air bags (32) are distributed in a shaft and are arranged on the outer side wall of the hose (12), the grid net (33) is arranged at the end part of the hose (12) in the roadway, protrudes out of the end part of the hose (12), and the edge of the grid net is provided with a protruding cutting edge;

the fixing assembly (4) comprises a U-shaped rod (41) and a U-shaped soft rod (42), the U-shaped inner cavity of the U-shaped rod (41) is clamped on the outer side wall of the steel pipe (11), the end part of the U-shaped inner cavity is fixed in the side wall of the shaft, the U-shaped inner cavity of the U-shaped soft rod (42) is clamped on the outer side wall of the hose (12), and the end part of the U-shaped soft rod is fixed in the side wall of the shaft.

2. The direct heating apparatus using an abandoned mine as claimed in claim 1, wherein: the side wall of the flange seat (21) and the flange head (22) which are contacted with each other is arranged in a corrugated shape and is filled with a rubber gasket (A).

3. The direct heating apparatus using an abandoned mine as claimed in claim 1 or 2, wherein: the fastening piece (23) comprises a fastening bolt (23 a) and a clamping buckle (23 b), adjacent steel pipes (11) are fastened and connected through the fastening bolt (23 a), and adjacent hoses (12) are fastened and connected through the clamping buckle (23 b).

4. The direct heating apparatus using an abandoned mine shaft as claimed in claim 3, wherein: each group of the clamping buckles (23 b) is provided with a plurality of clamping buckles, one end of each group of the clamping buckles is hinged to the side wall of the flange seat (21), and the other end of each group of the clamping buckles is provided with a clamping groove and is connected with the flange head (22) in a clamping mode.

5. The direct heating apparatus using an abandoned mine as claimed in claim 4, wherein: hose (12) include bellows (12 a), connection pad (12 b) and bracing piece (12 c), install the both ends symmetry of bellows (12 a) connection pad (12 b), evenly distributed is provided with a plurality of groups between connection pad (12 b) bracing piece (12 c).

6. The direct heating apparatus using an abandoned mine as claimed in claim 5, wherein: the connecting disc (12 b) is divided into a first connecting disc (12 b-1) and a second connecting disc (12 b-2), the first connecting disc (12 b-1) is located at one end where the flange head (22) is installed, and the second connecting disc (12 b-2) is located at one end where the flange base (21) is installed.

7. The direct heating apparatus using an abandoned mine as claimed in claim 6, wherein: the supporting rod (12 c) comprises a rod body (12 c-1) and one-way limiting blocks (12 c-2), the one-way limiting blocks (12 c-2) are uniformly distributed on the outer side wall of the rod body (12 c-1), and the mounting directions are uniform; and the number of the first and second groups,

one end of the rod body (12 c-1) is fixed on the side wall of the end face of the first connecting disc (12 b-1), and the other end of the rod body penetrates through a limiting hole (12 b-21) formed in the surface of the second connecting disc (12 b-2).

8. The direct heating apparatus using an abandoned mine as claimed in claim 7, wherein: the length of the buoyancy air bag (32) is the same as that of the support rod (12 c) and is smaller than that of the corrugated pipe (12 a) when the corrugated pipe is fully extended.

9. The direct heating apparatus using an abandoned mine as claimed in claim 8, wherein: the pipe body of the steel pipe (11) and the pipe body of the hose (12) are both made of heat insulation materials, and a temperature sensor (B) is arranged at the end part of the steel pipe (11) connected with the guide pipe (13).

10. A construction method of a direct heating device by utilizing an abandoned mine is characterized in that: the direct heating apparatus using the abandoned mine shaft according to any one of claims 1 to 9 is adopted, and comprises the following construction steps:

s1: designing a complete heating scheme according to heating requirements and the heat supply quantity of a mine;

s2: specifically, the steel pipe (11) is installed, pipes are distributed in a vertical two-way mode along the inner wall of the shaft, and are divided into a water inlet pipeline and a water outlet pipeline which are fixed through the U-shaped rod (41);

s3: the hose is installed, the vertical part of the hose (12) on the inner wall of the shaft is installed firstly, and the buoyancy air bag (32) and the U-shaped soft rod (42) are arranged in sequence;

s4: selecting two groups of roadways at different depths, checking the area where the hose (12) is laid in the roadways, and clearing obstacles;

s5: after the inspection and cleaning are finished, installing the sand cushion layer (31) at the bottom of the roadway;

s6: laying the hose (12) horizontally on top of the sand cushion (31);

s7: the filter screen (33) arranged at the end part of the hose (12) is arranged in the roadway;

s8: after the shaft and the pipe fittings in the roadway are installed, the water pump (5) is connected with the steel pipe (11) which is laid in the two directions through the guide pipe (13) to form a complete pipe fitting loop, and the water pump (5) is started to perform geothermal water trial pumping;

s9: after successful trial pumping, the plate heat exchanger (6) is installed in a pipe fitting loop to perform heating and heat exchange;

s10: in the heat exchange process, the temperature in the pipe loop can be monitored to adjust, so that different heating and refrigerating effects can be realized.

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