A water flow direction switching component in an inner and outer casing for geothermal resource collection

Abstract

The utility model belongs to the technical field of geothermal energy utilization, and provides a water flow direction switching component in an inner and outer sleeve for geothermal resource collection, in which different water flow direction modes are switched in the inner and outer sleeves, the structure is simple, and the use is convenient and quick; the technical scheme adopted is: a lower staggered disc is fixedly installed at the upper end of the lower section inner tube, the outer edge of the lower staggered disc is sealed and fixed on the inner wall of the outer tube, the upper staggered disc is slidably installed up and down in the first water passing area above the lower staggered disc, a guide sleeve is fixed on the bottom surface of the upper staggered disc, the guide sleeve penetrates the lower staggered disc and is slidably sleeved on the outer wall of the lower section inner tube, and matching grooves and convex strips are vertically arranged on the fitting surface of the guide sleeve and the lower section inner tube, a plurality of through holes are alternately arranged on the lower staggered disc and the upper staggered disc, and all the through holes are blocked when the lower staggered disc and the upper staggered disc are fitted together, a plurality of electromagnets are fixedly arranged at the bottom end of the upper section inner tube, all the electromagnets are electrically connected to the control system and powered by the control system, and the manufacturing material of the upper staggered disc is iron.

Description

Technical Field

[0001] The utility model discloses a water flow direction switching component in an inner and outer sleeve for geothermal resource collection, which belongs to the technical field of geothermal energy utilization, and specifically relates to a mode switching device for geothermal collection under different requirements. Background Art

[0002] Geothermal energy refers to clean and renewable thermal energy resources stored in the earth's crust in a broad sense. It comes from the heat generated during the original formation of the earth and the radioactive decay of materials. Geothermal energy is a clean energy and a renewable energy source with a very broad development prospect. There are three modes of utilization of geothermal resources, namely shallow geothermal energy utilization, medium-deep geothermal energy utilization and deep geothermal energy utilization. For example, in ordinary areas, shallow geothermal generally refers to heat energy below 25°C that is stored in rock and soil and groundwater within 200 meters below the surface and has development and utilization value. It can be used for building heating, cooling and hot water supply using ground source heat pump systems. Medium-deep geothermal energy is also called "conventional geothermal energy". It is generally buried within 3,000 meters and is mainly used directly for building heating, breeding, greenhouse planting and irrigation, medical care, industrial production, etc. Deep geothermal resources are mainly used for power generation.

[0003] At present, geothermal resources are applied to heat exchange systems. One method is to use shallow geothermal energy, which requires a heat pump system to achieve cooling or heating using the heat pump principle. The shallow geothermal system dissipates heat or provides heat for the heat pump system medium in summer and winter. However, the temperature of shallow geothermal energy is low, and the heating efficiency in winter is low.

[0004] Another method is to build a medium-deep geothermal system, using air source heat pumps for cooling in summer (i.e., air conditioning system), and sending the medium into the medium-deep geothermal for heat exchange and heating in winter. However, this system cannot take advantage of geothermal resources in summer.

[0005] Therefore, the combination of utilizing shallow geothermal resources in summer and medium-deep geothermal resources in winter is undoubtedly the optimal solution for geothermal resource utilization. However, the existing technology can only arrange shallow geothermal resource heat exchangers or medium-deep geothermal resource heat exchangers separately in one borehole, resulting in the need for double drilling of the combination plan, which will greatly increase the cost.

[0006] In order to save space occupied by a single unit, it is necessary to consider integrating the shallow geothermal and deep geothermal systems and arranging them in the same borehole, switching them according to different needs, reducing space occupancy so that more collection equipment can be built in the same area, and simplifying pipeline layout. The system integrated in the same borehole needs to be designed with a reasonable and effective water flow direction switching device. Utility Model Content

[0007] In order to solve one of the above technical defects, the utility model provides a water flow direction switching component in an inner and outer sleeve for geothermal resource collection, which switches different water flow direction modes in the inner and outer sleeves, has a simple structure, and is convenient and quick to use.

[0008] In order to solve the above technical problems, the technical solution adopted by the utility model is: a water flow direction switching component in an inner and outer outer casing for geothermal resource collection, an upper inner tube is vertically fixed at the center of the upper part of the outer tube, and a lower inner tube is vertically fixed at the center of the lower part of the outer tube, the upper inner tube and the lower inner tube are both hollow tube structures with upper and lower openings, a first water passing area is left between the lower end of the upper inner tube and the upper end of the lower inner tube, and the water flow direction switching component is installed in the first water passing area;

[0009] The water flow direction switching assembly includes a lower staggered disc, an upper staggered disc, a guide sleeve and an electromagnet, the lower staggered disc is fixedly mounted on the upper end of the lower inner tube, the outer edge of the lower staggered disc is sealed and fixed on the inner wall of the outer tube, the upper staggered disc is slidably mounted up and down in the first water passing area above the lower staggered disc, a guide sleeve is fixed on the bottom surface of the upper staggered disc, the guide sleeve penetrates the lower staggered disc and is slidably mounted on the outer wall of the lower inner tube, and matching grooves and convex strips are vertically arranged on the fitting surfaces of the guide sleeve and the lower inner tube, the length of the guide sleeve is greater than the height of the first water passing area, the lower staggered disc and the upper staggered disc are alternately provided with a plurality of through holes, and all the through holes are blocked when the lower staggered disc and the upper staggered disc are fitted together, a plurality of electromagnets are fixedly arranged on the bottom end of the upper inner tube, all of the electromagnets are electrically connected to the control system and powered by the control system, and the upper staggered disc is made of iron.

[0010] The electromagnet is composed of a conductive winding wrapped around an iron core tube, both ends of the conductive winding are electrically connected to the control system and powered by the control system, the iron core tube is a hollow tube made of soft iron or silicon steel, and the iron core tube is fixedly sleeved on the bottom of the upper inner tube, and when the electromagnet is energized to adsorb the upper staggered disk and fit it to the bottom surface of the upper inner tube, no gap is left between the upper surface of the upper staggered disk and the bottom end of the upper inner tube.

[0011] The electromagnet is a module box body with an electromagnetic component inside. The electromagnet is embedded in the lower tube wall of the upper inner tube, and the electromagnetic component is electrically connected to the control system and powered by the control system. When the electromagnet is energized to adsorb the upper staggered disk and fit it to the bottom surface of the upper inner tube, no gap is left between the upper surface of the upper staggered disk and the bottom end of the upper inner tube.

[0012] The multiple electromagnets are divided into two groups, and the control system controls the power supply of the two groups of electromagnets to start together or partially.

[0013] The water flow direction switching component in the inner and outer sleeves for geothermal resource collection provided by the utility model is adopted to adjust the relative relationship of the overlap or separation of the upper staggered disk and the lower staggered disk by energizing the electromagnet to open and close, so as to realize switching of different water flow direction modes in the inner and outer sleeves. The structure is simple and the use is convenient and quick.

[0014] Other features and advantages of the utility model will be described in the subsequent description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the contents indicated in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of a water flow direction of the utility model;

[0017] Figure 2 It is a structural schematic diagram of another water flow direction of the utility model;

[0018] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 4 A schematic diagram of the structure of the upper staggered plate provided by the utility model;

[0020] Figure 5 The present invention is a schematic structural diagram of the lower staggered plate provided by the utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0022] like Figure 1-5As shown, a water flow direction switching assembly in an inner and outer casing for geothermal resource collection, an upper inner tube 2 is vertically fixed at the center of the upper part of the outer tube 1, and a lower inner tube 3 is vertically fixed at the center of the lower part of the outer tube 1, the upper inner tube 2 and the lower inner tube 3 are both hollow tube structures open at the top and bottom, a first water passing area 8 is left between the lower end of the upper inner tube 2 and the upper end of the lower inner tube 3, and the first water passing area 8 is installed with a water flow direction switching assembly;

[0023] The water flow direction switching assembly includes a lower staggered disc 11, an upper staggered disc 12, a guide sleeve 13 and an electromagnet 14, wherein the lower staggered disc 11 is fixedly mounted on the upper end of the lower inner tube 3, the outer edge of the lower staggered disc 11 is sealed and fixed on the inner wall of the outer tube 1, the upper staggered disc 12 is slidably mounted up and down in the first water-passing area 8 above the lower staggered disc 11, a guide sleeve 13 is fixed to the bottom surface of the upper staggered disc 12, the guide sleeve 13 penetrates the lower staggered disc 11 and is slidably sleeved on the outer wall of the lower inner tube 3, and matching grooves and convex strips are vertically arranged on the fitting surface of the guide sleeve 13 and the lower inner tube 3, the length of the guide sleeve 13 is greater than the height of the first water-passing area 8, a plurality of through holes 15 are staggered on the lower staggered disc 11 and the upper staggered disc 12, and all the through holes 15 are blocked when the lower staggered disc 11 and the upper staggered disc 12 are fitted together, and the through holes 15 are preferably polygonal shaped holes, so that the total area of ​​the through holes 15 of the lower staggered disk 11 and the upper staggered disk 12 is the largest under the premise of complete staggering, and the through hole areas of the lower staggered disk 11 and the upper staggered disk 12 located in the lumen of the outer tube 1 are the same, and the through hole areas of the lower staggered disk 11 and the upper staggered disk 12 located in the lumen of the upper inner tube 2 and the lower inner tube 3 are the same. Even if the through hole areas cannot be the same, they cannot differ too much. The grooves and convex strips on the fitting surfaces of the guide sleeve 13 and the lower inner tube 3 can avoid the circumferential rotation of the upper staggered disk 12 during the up and down processes, and effectively ensure the channel blocking function when the lower staggered disk 11 and the upper staggered disk 12 are fitted together. A plurality of electromagnets 14 are fixedly arranged at the bottom end of the upper inner tube 2, and all the electromagnets 14 are electrically connected to the control system and powered by the control system. The upper staggered disk 12 is made of iron, and the surface of the upper staggered disk 12 needs to be coated with an anti-corrosion coating.

[0024] The electromagnet 14 is composed of a conductive winding wound around an iron core tube, both ends of the conductive winding are electrically connected to the control system and powered by the control system. The iron core tube is a hollow tube made of soft iron or silicon steel, and the iron core tube is fixedly sleeved on the bottom of the upper inner tube 2, so that after the conductive winding is energized, the iron core tube becomes an electromagnet, which adsorbs the iron upper staggered disk 12 to make it fit with the bottom surface of the upper inner tube 2. When the electromagnet 14 is energized to adsorb the upper staggered disk 12 to fit with the bottom surface of the upper inner tube 2, no gap is left between the upper surface of the upper staggered disk 12 and the bottom end of the upper inner tube 2.

[0025] The electromagnet 14 is a module box body with an electromagnetic component inside. The electromagnet is embedded in the lower tube wall of the upper inner tube 2, and the electromagnetic component is electrically connected to the control system and powered by the control system. When the electromagnet 14 is energized to adsorb the upper staggered plate 12 and fit it to the bottom surface of the upper inner tube 2, no gap is left between the upper surface of the upper staggered plate 12 and the bottom end of the upper inner tube 2.

[0026] Two feasible structures of the electromagnet 14 are described above, but the electromagnet 14 in the present invention is not limited to the above structures. As long as a structure is adopted in which the electromagnet adsorbs the iron upper staggered plate 12 so as to achieve the function of separating from the lower staggered plate 11 and sealingly fitting with the bottom end of the upper inner tube 2, it can be applied to the present invention.

[0027] When the electromagnet 14 is energized to adsorb the upper staggered plate 12, no gap is left between the upper surface of the upper staggered plate 12 and the bottom end of the upper inner tube 2, so as to prevent the medium water from flowing between the upper inner tube 2 and the outer tube 1 through the gap.

[0028] The multiple electromagnets 14 are divided into two groups, and the control system controls the power supply of the two groups of electromagnets 14 to start together or partially. When the electromagnet needs to be started to adsorb the upper staggered disk, the two groups of electromagnets 14 are all started to adsorb the iron upper staggered disk 12 with the maximum electromagnetic force, so that it can overcome its own gravity (depending on the outer tube diameter and the total area of ​​the through hole), the medium water flow rate, the height difference of the medium water inlet, the water pressure and the intermolecular attraction between the upper staggered disk 12 and the lower staggered disk 13. After the switching is completed, one of the groups of electromagnets 14 is turned off to keep only the upper staggered disk 12 in the adsorbed state.

[0029] The working principle of this utility model:

[0030] like Figure 1 As shown, it is the conventional working state of the utility model, the electromagnet 14 is not energized, and has no adsorption effect on the upper staggered plate 12. Then, under the downward impact force of the medium water and the gravity of the upper staggered plate 12, the upper staggered plate 12 will overlap with the lower staggered plate 11, and the multiple through holes 15 on the lower staggered plate 11 and the upper staggered plate 12 are staggered. When the lower staggered plate 11 and the upper staggered plate 12 are fitted together, all the through holes 15 are blocked by each other, so that the medium water cannot flow downward. At this time, the first water-passing area 8 is unobstructed, and the medium water can directly flow to the upper inner pipe 2 after exchanging heat with the water in the permeable filler layer 4 in the shallow geothermal layer 6 area;

[0031] When the utility model starts the electromagnet 14, under the effect of magnetic attraction, the iron upper disc 12 is adsorbed on the lower end of the upper inner tube 2. Figure 2As shown, the channel for medium water to directly enter the upper inner tube 2 from the outer tube 1 is blocked, and then the medium water flows into the area between the upper staggered disk 12 and the upper staggered disk 11 from the multiple through holes of the upper staggered disk 12, and then flows into the outer tube 1 below from the through holes of the lower staggered disk 11. The medium water continues to flow downward and then flows into the lower inner tube 3 from other channels. When it reaches the upper end of the lower inner tube 3, the medium water can also smoothly enter the upper inner tube 2, and then flow from its upper part. During the circulation of the medium water, the guide sleeve 13 not only guides the upper and lower movements of the upper staggered disk 12, but also realizes the isolation of the medium water in the outer tube and the inner tube during the separation of the upper staggered disk 12 and the lower staggered disk 11.

[0032] A rubber layer is fixedly disposed on the top surface of the lower staggered plate 11 to reduce the molecular attraction between the upper staggered plate 12 and the lower staggered plate 11 .

[0033] In the present invention, the connecting wires of the electromagnet 14 can be sealed and concealed in the wall of the tube through which they pass, so as to protect the wires. The specific protection means and structure can be realized by existing technical means, and will not be described in detail in the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A water flow direction switching assembly in an inner and outer casing for geothermal resource collection, wherein an upper inner tube (2) is vertically fixed at the center of the upper part of the outer tube (1), and a lower inner tube (3) is vertically fixed at the center of the lower part of the outer tube (1), the upper inner tube (2) and the lower inner tube (3) are both hollow tube structures open at the top and bottom, and a first water passing area (8) is reserved between the lower end of the upper inner tube (2) and the upper end of the lower inner tube (3), characterized in that: The first water passage area (8) is equipped with a water flow direction switching component; The water flow direction switching assembly comprises a lower staggered disc (11), an upper staggered disc (12), a guide sleeve (13) and an electromagnet (14); the lower staggered disc (11) is fixedly mounted on the upper end of the lower inner tube (3); the outer edge of the lower staggered disc (11) is sealed and fixed on the inner wall of the outer tube (1); the upper staggered disc (12) is slidably mounted up and down in a first water passage area (8) above the lower staggered disc (11); a guide sleeve (13) is fixed on the bottom surface of the upper staggered disc (12); the guide sleeve (13) passes through the lower staggered disc (11) and is slidably mounted on the outer wall of the lower inner tube (3); and the guide sleeve (13) is vertically provided with matching grooves and convex strips on the mating surface with the lower inner tube (3); the length of the guide sleeve (13) is greater than the height of the first water-passing area (8); a plurality of through holes (15) are alternately arranged on the lower staggered plate (11) and the upper staggered plate (12); and when the lower staggered plate (11) and the upper staggered plate (12) are mated, all the through holes (15) are blocked; a plurality of electromagnets (14) are fixedly provided at the bottom end of the upper inner tube (2); all the electromagnets (14) are electrically connected to the control system and powered by the control system; and the upper staggered plate (12) is made of iron.

2. The water flow direction switching assembly in the inner and outer casing for geothermal resource collection according to claim 1, characterized in that: The electromagnet (14) is composed of an iron core tube with a conductive winding wound around it. Both ends of the conductive winding are electrically connected to a control system and powered by the control system. The iron core tube is a hollow tube made of soft iron or silicon steel, and the iron core tube is fixedly sleeved on the bottom of the upper inner tube (2). When the electromagnet (14) is energized to adsorb the upper staggered disk (12) and fit it to the bottom surface of the upper inner tube (2), no gap is left between the upper surface of the upper staggered disk (12) and the bottom end of the upper inner tube (2).

3. The water flow direction switching assembly in the inner and outer casing for geothermal resource collection according to claim 1, characterized in that: The electromagnet (14) is a module box body with an electromagnetic component inside. The electromagnet is embedded in the lower tube wall of the upper inner tube (2), and the electromagnetic component is electrically connected to the control system and powered by the control system. When the electromagnet (14) is energized to adsorb the upper staggered plate (12) and fit it to the bottom surface of the upper inner tube (2), no gap is left between the upper surface of the upper staggered plate (12) and the bottom end of the upper inner tube (2).

4. The water flow direction switching assembly in the inner and outer casing for geothermal resource collection according to claim 3, characterized in that: The plurality of electromagnets (14) are divided into two groups, and the control system controls the power supply of the two groups of electromagnets (14) to start them together or partially.

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