Wedge ring type water flow direction switching assembly in inner and outer sleeves

Abstract

The utility model belongs to the technical field of geothermal energy utilization, and provides a wedge ring type water flow direction switching assembly in an inner sleeve and an outer sleeve, which is used for switching different water flow direction modes in the inner sleeve and the outer sleeve, and adopts the technical scheme that an inner pipe is vertically fixed in the center in an outer pipe, and a plurality of water passing through holes are formed in the pipe wall of the inner pipe; the water flow direction switching assembly is installed below the water passing through hole and comprises a fixed wedge ring, a first movable wedge ring, a second movable wedge ring, a fixed circular truncated cone, a pull rope, a reel and a power device. When the annular first movable wedge ring is completely arranged in the fixed wedge ring, the two inclined faces are attached to form a sealing plug for completely blocking a pipe cavity between the outer pipe and the inner pipe, when the second movable wedge ring is completely arranged outside the fixed circular truncated cone in a sleeving mode, the two inclined faces are attached to form a sealing plug for completely blocking a pipe cavity of the inner pipe, and a plurality of pull ropes are connected to the movable wedge rings. The power device drives the reel to rotate and roll the pull rope to drive the first movable wedge ring and the second movable wedge ring to ascend to completely block the water passing through hole.

Description

Technical Field

[0001] The utility model discloses a wedge-ring type water flow direction switching component in an inner and outer casing, belonging 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 a ground source heat pump system. 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 wedge-ring type water flow direction switching component in an inner and outer sleeve, 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 wedge-ring type water flow direction switching component in an inner and outer outer casing, an inner tube is vertically fixed in the center of the outer tube, a plurality of water through holes are opened on the wall of the inner tube, the water through holes are located on the same horizontal plane, and a water flow direction switching component is installed on the walls of the outer tube and the inner tube below the water through holes;

[0009] The water flow direction switching assembly includes a fixed wedge ring, a first movable wedge ring, a second movable wedge ring, a fixed round table, a pull rope, a reel and a power device;

[0010] The fixed wedge ring and the first movable wedge ring are both annular structures. The cross section of the fixed wedge ring is a right-angled trapezoid that is narrow at the top and wide at the bottom, and its inner ring surface is an inclined surface. The cross section of the first movable wedge ring is a right-angled trapezoid that is wide at the top and narrow at the bottom, and its outer ring surface is an inclined surface. The outer ring surface of the fixed wedge ring is fixed on the inner wall of the outer tube. When the first movable wedge ring is completely placed inside the fixed wedge ring, the two inclined surfaces are in contact with each other and form a first sealing plug with a rectangular cross section, and the first sealing plug completely blocks the tube cavity between the outer tube and the inner tube.

[0011] The second movable wedge ring is an annular structure, the cross section of the second movable wedge ring is a right-angled trapezoid that is wide at the top and narrow at the bottom, and the inner ring surface is an inclined surface, the fixed truncated cone is a solid truncated cone structure that is narrow at the top and wide at the bottom, and the bottom surface of the fixed truncated cone is fixedly connected to the inner wall of the inner tube through a plurality of connecting rods, and when the second movable wedge ring is completely sleeved on the outside of the fixed truncated cone, the two inclined surfaces are in contact with each other and form a second solid cylindrical plug, and the second plug completely blocks the lumen of the inner tube;

[0012] A plurality of pull ropes are connected to the first movable wedge ring and the second movable wedge ring. The reel is rotatably mounted just above the outer portion of the outer tube. The upper ends of all the pull ropes are wound on the reel. One end of the reel is connected to a power device and driven by the power device to realize forward and reverse rotation.

[0013] The pull rope drives the first movable wedge ring and the second movable wedge ring to rise to the water through hole to completely block the water through hole.

[0014] The contact inclined surfaces between the fixed wedge ring and the first movable wedge ring, and the contact inclined surfaces between the second movable wedge ring and the fixed truncated table are all attached with sealing layers.

[0015] A plurality of limit blocks are arranged on the inner and outer walls of the inner tube, and the limit blocks are located above the water through hole. When the first movable wedge ring and the second movable wedge ring rise to the top surface and abut against the limit blocks, the water through hole is completely blocked.

[0016] By adopting the wedge-ring type water flow direction switching assembly in the inner and outer sleeves provided by the utility model, each lumen is blocked by a plug formed by two wedge-shaped components. The combination and separation of the two wedge-shaped components of the plug are adjusted by a pull rope, so that different water flow direction modes can be switched in the inner and outer sleeves. The structure is simple and the use is convenient and quick.

[0017] 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

[0018] 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:

[0019] Figure 1 It is a structural schematic diagram of a water flow direction of the utility model;

[0020] Figure 2 This is a structural schematic diagram of another water flow direction of 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 1-2 As shown, the utility model is a wedge-ring type water flow direction switching assembly in an inner and outer outer sleeve, an inner tube 2 is vertically fixed in the center of an outer tube 1, a plurality of water through holes 3 are opened on the tube wall of the inner tube 2, the water through holes 3 are located on the same horizontal plane, and a water flow direction switching assembly is installed on the tube walls of the outer tube 1 and the inner tube 2 below the water through holes 3;

[0023] The water flow direction switching assembly includes a fixed wedge ring 11, a first movable wedge ring 12, a second movable wedge ring 13, a fixed round table 14, a pull rope 15, a reel and a power device;

[0024] The fixed wedge ring 11 and the first movable wedge ring 12 are both annular structures. The cross section of the fixed wedge ring 11 is a right-angled trapezoid that is narrow at the top and wide at the bottom, and its inner ring surface is an inclined surface. The cross section of the first movable wedge ring 12 is a right-angled trapezoid that is wide at the top and narrow at the bottom, and its outer ring surface is an inclined surface. The outer ring surface of the fixed wedge ring 11 is fixed on the inner wall of the outer tube 1. When the first movable wedge ring 12 is completely placed inside the fixed wedge ring 11, the two inclined surfaces are attached to each other and form a first sealing plug with a rectangular cross section, and the first sealing plug completely blocks the lumen between the outer tube 1 and the inner tube 2.

[0025] The second movable wedge ring 13 is an annular structure. The cross section of the second movable wedge ring 13 is a right-angled trapezoid that is wide at the top and narrow at the bottom, and its inner ring surface is an inclined surface. The fixed truncated cone 14 is a solid truncated cone structure that is narrow at the top and wide at the bottom. The bottom surface of the fixed truncated cone 14 is fixedly connected to the inner wall of the inner tube 2 through a plurality of connecting rods. When the second movable wedge ring 13 is completely sleeved on the outside of the fixed truncated cone 14, the two inclined surfaces are in contact with each other and form a second solid cylindrical plug, and the second plug completely blocks the lumen of the inner tube 2.

[0026] A plurality of pull ropes 15 are connected to the first movable wedge ring 12 and the second movable wedge ring 13. The reel is rotatably mounted just above the outer tube 1. The upper ends of all the pull ropes 15 are wound on the reel. One end of the reel is connected to a power device and driven by the power device to realize forward and reverse rotation.

[0027] The pull rope 15 drives the first movable wedge ring 12 and the second movable wedge ring 13 to rise to the water through hole 3 and completely block the water through hole 3 .

[0028] The contact slopes between the fixed wedge ring 11 and the first movable wedge ring 12 and the contact slopes between the second movable wedge ring 13 and the fixed truncated table 14 are all attached with sealing layers.

[0029] A plurality of limit blocks 16 are provided on the inner and outer walls of the inner tube 2 , and the limit blocks 16 are located above the water through hole 3 . When the first movable wedge ring 12 and the second movable wedge ring 13 rise to the top surface and abut against the limit blocks 16 , the water through hole 3 is completely blocked.

[0030] The working principle of this utility model:

[0031] like Figure 1 As shown, it is one of the water flow modes of the utility model, the first movable wedge ring 12 is completely placed inside the fixed wedge ring 11 to form a first plug, and the first plug completely blocks the tube cavity between the outer tube 1 and the inner tube 2, the second movable wedge ring 13 is completely sleeved outside the fixed truncated cone 14 to form a solid cylindrical second plug, and the second plug completely blocks the tube cavity of the inner tube 2, so that the medium water cannot flow downward, and the medium water can directly flow from the water through hole 3 to the upper inner tube 2;

[0032] When switching to another water flow mode, the power device is started to drive the reel to rotate slowly, and the pull rope 15 is rolled up. The multiple pull ropes drive the first movable wedge ring 12 and the second movable wedge ring 13 to rise to the top surface to abut against the limit block 16, completely blocking the water through hole 3. The first movable wedge ring 12 and the fixed wedge ring 11 are staggered to form a water gap in the middle, and the second movable wedge ring 13 and the fixed round table 14 are staggered to form a water gap in the middle. Figure 2 As shown, the medium water flows downward from the outer tube 1 and from other channels (located at the bottom of the outer tube 1, the purpose is to allow the medium water to collect geothermal resources in deeper areas) into the inner tube 2, and flows out upward;

[0033] Switch back to Figure 1 In the water flow direction mode shown, it is only necessary to operate the power device to rotate the reel in the opposite direction and release the pull rope 15. The first movable wedge ring 12 and the second movable wedge ring 13 will drop under the impact pressure of the water flow and their own gravity until they are combined and blocked with the corresponding fixed wedge ring 11 and fixed cone 14.

[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 wedge-ring type water flow direction switching assembly in an inner and outer sleeve, wherein an inner tube (2) is vertically fixed to the center of an outer tube (1), a plurality of water through holes (3) are opened on the wall of the inner tube (2), and the water through holes (3) are located on the same horizontal plane, characterized in that: A water flow direction switching assembly is installed on the tube walls of the outer tube (1) and the inner tube (2) below the water through hole (3); The water flow direction switching assembly comprises a fixed wedge ring (11), a first movable wedge ring (12), a second movable wedge ring (13), a fixed round table (14), a pull rope (15), a reel and a power device; The fixed wedge ring (11) and the first movable wedge ring (12) are both annular structures. The cross section of the fixed wedge ring (11) is a right-angled trapezoid that is narrow at the top and wide at the bottom, and its inner ring surface is an inclined surface. The cross section of the first movable wedge ring (12) is a right-angled trapezoid that is wide at the top and narrow at the bottom, and its outer ring surface is an inclined surface. The outer ring surface of the fixed wedge ring (11) is fixed on the inner wall of the outer tube (1). When the first movable wedge ring (12) is completely placed inside the fixed wedge ring (11), the two inclined surfaces are attached to each other and form a first sealing plug with a rectangular cross section, and the first sealing plug completely blocks the tube cavity between the outer tube (1) and the inner tube (2). The second movable wedge ring (13) is an annular structure. The cross section of the second movable wedge ring (13) is a right-angled trapezoid that is wide at the top and narrow at the bottom, and its inner ring surface is an inclined surface. The fixed truncated cone (14) is a solid truncated cone structure that is narrow at the top and wide at the bottom. The bottom surface of the fixed truncated cone (14) is fixedly connected to the inner wall of the inner tube (2) through a plurality of connecting rods. When the second movable wedge ring (13) is completely mounted on the outside of the fixed truncated cone (14), the two inclined surfaces are attached to each other and form a second solid cylindrical plug, and the second plug completely blocks the lumen of the inner tube (2). A plurality of pull ropes (15) are connected to the first movable wedge ring (12) and the second movable wedge ring (13); the reel is rotatably mounted just above the outer portion of the outer tube (1); the upper ends of all the pull ropes (15) are wound on the reel; one end of the reel is connected to a power device and driven by the power device to realize forward and reverse rotation; The pull rope (15) drives the first movable wedge ring (12) and the second movable wedge ring (13) to rise to the water through hole (3) to completely block the water through hole (3).

2. A wedge-ring type water flow direction switching assembly in an inner and outer sleeve according to claim 1, characterized in that: The contact bevels of the fixed wedge ring (11) and the first movable wedge ring (12), and the contact bevels of the second movable wedge ring (13) and the fixed truncated table (14) are all attached with sealing layers.

3. A wedge-ring type water flow direction switching assembly in an inner and outer sleeve according to claim 1, characterized in that: A plurality of limit blocks (16) are provided on the inner and outer walls of the inner tube (2), and the limit blocks (16) are located above the water through hole (3). When the first movable wedge ring (12) and the second movable wedge ring (13) rise to the top surface and abut against the limit blocks (16), the water through hole (3) is completely blocked.

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