A middle-deep geothermal energy heat exchanger

Abstract

The utility model relates to the technical field of geothermal energy heat exchanger, and disclose a kind of middle-deep geothermal energy heat exchanger, including first heat exchange shell, second heat exchange shell, first heat exchange pipe and second heat exchange pipe, the one end of first heat exchange shell is provided with the connecting mechanism that can be responded stratum movement by shape change, first heat exchange shell and second heat exchange shell are connected by connecting mechanism;The utility model can provide connection for first heat exchange shell and second heat exchange shell under the action of connecting mechanism in daily use, guarantee the stability of first heat exchange shell and second heat exchange shell connection, and under the setting of connecting mechanism structure, first heat exchange shell and second heat exchange shell between certain flexible connection, can make the overall heat exchange pipeline differentiation into several small units, for the overall influence of heat exchange pipeline by stratum movement differentiation, to improve the stability and reliability of the device long-term buried operation.

Description

Technical Field

[0001] This utility model relates to the field of geothermal heat exchanger technology, specifically a medium-deep geothermal heat exchanger. Background Technology

[0002] Ground source heat pump technology, an engineering technology. With economic development and the improvement of people's living standards, heating and air conditioning in public buildings and residences have become common requirements. Coal-fired boilers, a traditional heating method in China, not only have low energy efficiency but also cause serious air pollution. Therefore, coal-fired boilers are being phased out in some cities, while oil and gas boilers have very high operating costs. Ground source heat pumps are a technologically and economically advantageous alternative for solving heating and air conditioning problems.

[0003] However, in the implementation of ground source heat pump systems, heat exchange pipes need to be buried deep underground to utilize geothermal resources to heat the circulating medium within the pipes for heat extraction and transfer. Currently, the commonly used deep-buried underground heat exchange pipes are mostly monolithic structures. Their significant drawback is that, due to the large pipe length, when the strata shift, the compressive stress acting on the pipes locally can easily propagate and spread along the pipe body, causing the entire heat exchange pipe system to bear additional loads, thus threatening its long-term stability and reliability during underground operation. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a medium-deep geothermal energy heat exchanger.

[0005] The technical solution adopted to solve the above-mentioned technical problems is: a medium-deep geothermal energy heat exchanger, including a first heat exchange shell, a second heat exchange shell, a first heat exchange tube, and a second heat exchange tube. One end of the first heat exchange shell is provided with a connecting mechanism that can adapt to ground movement through deformation. The first and second heat exchange shells are connected by the connecting mechanism. A plurality of first heat exchange shells, connecting mechanisms, and second heat exchange shells together form a heat exchange pipeline system. The inner cavity of the first heat exchange shell is provided with a first filler, and the inner cavity of the second heat exchange shell is provided with a second filler. The first and second heat exchange tubes penetrate the inner cavities of the first and second fillers. The first and second heat exchange tubes are used to transport the heat exchange medium. The system also includes: A buffer assembly is disposed on the inner surface of the first heat exchange housing for connection with the inner surface of the second heat exchange housing.

[0006] The connection mechanism of this utility model includes a first mounting plate, a metal hose, and a second mounting plate. The first mounting plate is fixed to the surface of the first heat exchange shell, the metal hose is fixed to the surface of the first mounting plate, the second mounting plate is fixed to the surface of the second heat exchange shell, and the other end of the metal hose is fixed to the surface of the second mounting plate.

[0007] The metal flexible hose of this utility model is made of stainless steel corrugated hose and has a mesh sleeve on its surface.

[0008] The buffer assembly of this utility model includes a first connector fixed to the inner surface of a first heat exchange shell, a first fixing plate hinged to the first connector, a sliding plate slidably disposed in the inner cavity of the first fixing plate, a second fixing plate fixed to the other end of the sliding plate, a second connector hinged to the other end of the second fixing plate, the other end of the second connector fixed to the inner surface of the second heat exchange shell, and an elastic component for use with the sliding plate disposed in the inner cavity of the first fixing plate.

[0009] The elastic component of this utility model includes two sets of sliding rods fixed to both sides of the inner cavity of the first fixed plate and two sets of sliding grooves opened at one end of the sliding plate. The surface of the sliding rod is fitted with a spring, one end of the spring is fixed to the inner cavity of the first fixed plate, the other end of the spring is fixed to the end face of the sliding plate, and the other end of the sliding rod extends into the sliding groove to slide.

[0010] The present invention comprises two sets of buffer components, which are located within the connecting mechanism and are staggered to form an X-shaped structure.

[0011] In daily use, this utility model can provide a connection between the first heat exchange shell and the second heat exchange shell under the action of the connecting mechanism, ensuring the connection stability between the first heat exchange shell and the second heat exchange shell. Furthermore, through the setting of the connecting mechanism structure, the first heat exchange shell and the second heat exchange shell can have a certain degree of flexible connection, which can divide the overall heat exchange pipeline into several small units to mitigate the overall impact of ground movement on the heat exchange pipeline, thereby improving the stability and reliability of the device during long-term buried operation. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of a portion of the present invention after being cut open; Figure 3 This is a partial three-dimensional structural diagram of the present invention; Figure 4 This is a partial three-dimensional structural diagram of the present invention; Figure 5 This is a partial three-dimensional structural diagram of the present invention.

[0013] In the figure: 1. First heat exchange shell; 2. Connecting mechanism; 21. First mounting plate; 22. Metal hose; 23. Second mounting plate; 3. Second heat exchange shell; 4. First filler; 5. Second filler; 6. First heat exchange tube; 7. Second heat exchange tube; 8. Buffer assembly; 81. First connector; 82. First fixing plate; 83. Slide plate; 84. Second fixing plate; 85. Second connector; 86. Elastic assembly; 861. Slide rod; 862. Spring; 863. Slide groove. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments. Example 1

[0015] like Figure 1-3 As shown, a medium-deep geothermal heat exchanger includes a first heat exchange shell 1, a second heat exchange shell 3, a first heat exchange tube 6, and a second heat exchange tube 7. One end of the first heat exchange shell 1 is equipped with a connecting mechanism 2 that can adapt to ground movement through deformation. The first heat exchange shell 1 and the second heat exchange shell 3 are connected by the connecting mechanism 2. The connecting mechanism 2 includes a first mounting plate 21, a metal flexible hose 22, and a second mounting plate 23. The metal flexible hose 22 is made of stainless steel corrugated hose and has a mesh sleeve on its surface. It consists of three parts: the corrugated hose providing flexibility, the metal mesh sleeve providing pressure resistance, and the joint connection sealing. It is connected by welding, mechanical clamping, or a hybrid method, and absorbs heat through the corrugated structure. Axial, lateral, or angular displacement effectively alleviates the stress generated by ground movement and has pressure and temperature resistance. The first mounting plate 21 is fixed to the surface of the first heat exchange shell 1, the metal hose 22 is fixed to the surface of the first mounting plate 21, the second mounting plate 23 is fixed to the surface of the second heat exchange shell 3, and the other end of the metal hose 22 is fixed to the surface of the second mounting plate 23, so that the metal hose 22 forms a flexible connection between the first heat exchange shell 1 and the second heat exchange shell 3, thereby providing a buffer space for the compression of the first heat exchange shell 1 or the second heat exchange shell 3 when it is squeezed due to ground movement.

[0016] A plurality of first heat exchange shells 1, connecting mechanisms 2, and second heat exchange shells 3 together constitute a heat exchange piping system. The inner cavity of the first heat exchange shell 1 is provided with a first filler 4, and the inner cavity of the second heat exchange shell 3 is provided with a second filler 5. The first filler 4 and the second filler 5 are not connected. A first heat exchange tube 6 and a second heat exchange tube 7 pass through the inner cavities of the first filler 4 and the second filler 5. The first heat exchange tube 6 and the second heat exchange tube 7 are used to transport the heat exchange medium. The system also includes: Two sets of buffer assemblies 8 are provided on the inner surfaces of the first heat exchange shell 1 and the second heat exchange shell 3. The two sets of buffer assemblies 8 are located within the connecting mechanism 2 and are staggered to form an X-shaped structure. The buffer assemblies 8 can provide uniform support force to the first heat exchange shell 1 and the second heat exchange shell 3. The buffer assembly 8 includes a first connector 81 fixed to the inner surface of the first heat exchange shell 1. A first fixing plate 82 is hinged to the first connector 81. A sliding plate 83 is slidably arranged in the inner cavity of the first fixing plate 82. A second fixing plate 84 is fixed to the other end of the sliding plate 83. The first heat exchange shell 1 is hinged to a second connector 85, the other end of which is fixed to the inner surface of the second heat exchange shell 3. The inner cavity of the first fixing plate 82 is provided with an elastic component 86 that works with the sliding plate 83 to guide and buffer the relative displacement of the first fixing plate 82 and the sliding plate 83. When the relative position of the first heat exchange shell 1 and the second heat exchange shell 3 changes, the relative displacement of the first heat exchange shell 1 and the second heat exchange shell 3 is reduced under the action of the first fixing plate 82, the sliding plate 83 and the elastic component 86, while improving the structural strength of the device.

[0017] like Figure 4 , 5 As shown, the elastic component 86 includes two sets of sliding rods 861 fixed to both sides of the inner cavity of the first fixed plate 82 and two sets of sliding grooves 863 opened at one end of the sliding plate 83. A spring 862 is sleeved on the surface of the sliding rod 861. One end of the spring 862 is fixed to the inner cavity of the first fixed plate 82, and the other end of the spring 862 is fixed to the end face of the sliding plate 83. The other end of the sliding rod 861 can slide in the sliding groove 863. In this embodiment, through the arrangement of the sliding rod 861, the spring 862 and the sliding groove 863, when the first fixed plate 82 and the sliding plate 83 move relative to each other, the sliding rod 861 and the sliding groove 863 can provide a limit for the movement of the first fixed plate 82 and the sliding plate 83, and the spring 862 can provide a restoring support force.

[0018] The working principle of this utility model is as follows: In daily use, this device can absorb heat from the middle and deep layers under the action of the second heat exchange tube 7 and the first heat exchange tube 6, and transfer the heat to the ground surface through the ground source heat pump system. The working principle of the first heat exchange shell 1, the second heat exchange shell 3, the first heat exchange tube 6 and the second heat exchange tube 7 is existing technology and will not be described in detail here.

[0019] When the first heat exchange shell 1 and the second heat exchange shell 3 are squeezed by ground movement, the metal hose 22 can be deformed under the action of the first mounting plate 21 and the second mounting plate 23, thereby changing the relative position of the first heat exchange shell 1 and the second heat exchange shell 3. In this way, the overall extrusion deformation force can be converted into the extrusion force on the individual device, reducing the extrusion of the whole by ground movement, improving the pressure resistance of the first heat exchange shell 1 and the second heat exchange shell 3 in daily use, and improving the service life of the heat exchange system.

Claims

1. A medium-deep geothermal heat exchanger, comprising a first heat exchange shell (1), a second heat exchange shell (3), a first heat exchange tube (6), and a second heat exchange tube (7), characterized in that: One end of the first heat exchange shell (1) is provided with a connecting mechanism (2) that can adapt to the movement of the stratum through deformation. The first heat exchange shell (1) and the second heat exchange shell (3) are connected by the connecting mechanism (2). Several first heat exchange shells (1), connecting mechanisms (2) and second heat exchange shells (3) together form a heat exchange pipeline system. The inner cavity of the first heat exchange shell (1) is provided with a first filler (4), and the inner cavity of the second heat exchange shell (3) is provided with a second filler (5). The first heat exchange tube (6) and the second heat exchange tube (7) are provided through the inner cavities of the first filler (4) and the second filler (5). The first heat exchange tube (6) and the second heat exchange tube (7) are used to transport the heat exchange medium. The system also includes: A buffer assembly (8) is disposed on the inner surface of the first heat exchange shell (1) for connection with the inner surface of the second heat exchange shell (3).

2. The medium-deep geothermal heat exchanger according to claim 1, characterized in that: The connecting mechanism (2) includes a first mounting plate (21), a metal hose (22), and a second mounting plate (23). The first mounting plate (21) is fixed to the surface of the first heat exchange shell (1), the metal hose (22) is fixed to the surface of the first mounting plate (21), the second mounting plate (23) is fixed to the surface of the second heat exchange shell (3), and the other end of the metal hose (22) is fixed to the surface of the second mounting plate (23).

3. A medium-deep geothermal heat exchanger according to claim 2, characterized in that: The metal hose (22) is made of stainless steel corrugated hose and has a mesh sleeve on its surface.

4. A medium-deep geothermal heat exchanger according to claim 1, characterized in that: The buffer assembly (8) includes a first connector (81) fixed to the inner surface of the first heat exchange shell (1), a first fixing plate (82) hinged to the first connector (81), a sliding plate (83) slidably disposed in the inner cavity of the first fixing plate (82), a second fixing plate (84) fixed to the other end of the sliding plate (83), a second connector (85) hinged to the other end of the second fixing plate (84), the other end of the second connector (85) fixed to the inner surface of the second heat exchange shell (3), and an elastic component (86) for use with the sliding plate (83) disposed in the inner cavity of the first fixing plate (82).

5. A medium-deep geothermal heat exchanger according to claim 4, characterized in that: The elastic component (86) includes two sets of slide rods (861) fixed on both sides of the inner cavity of the first fixed plate (82) and two sets of slide grooves (863) opened at one end of the slide plate (83). The surface of the slide rod (861) is fitted with a spring (862). One end of the spring (862) is fixed to the inner cavity of the first fixed plate (82), and the other end of the spring (862) is fixed to the end face of the slide plate (83). The other end of the slide rod (861) extends into the slide groove (863) and slides.

6. A medium-deep geothermal heat exchanger according to claim 1, characterized in that: The number of buffer components (8) is two sets, and the two sets of buffer components (8) are located in the connecting mechanism (2) and are staggered to form an X-shaped structure.

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