A convenient switching geothermal recharge shunt device

Abstract

The present application relates to a kind of geothermal recharge shunt device of convenient switching, it is related to geothermal recharge shunt technical field.The extraction pipe and recharge pipe are included, the extraction pipe side wall is provided with extraction valve, the recharge pipe side wall is provided with recharge valve, the extraction valve and recharge valve side wall are rotationally installed with rotation valve stem, the end of rotation valve stem is fixed with rotation handle, the surface of extraction valve and recharge valve is installed with fixed seat, the surface of fixed seat is fixed with pressing seat, the pressing seat is provided with power-assisted assembly in, the fixed seat is provided with limit assembly in, the present application, by the fixed seat, pressing seat and power-assisted assembly of being set, reduce the force load of manual operation, so that operating personnel can with smaller force, push rotation handle to complete unlocking, by the rotation handle, rotation valve stem and limit assembly of being set, the operation sequence of extraction valve and recharge valve is forcibly limited from mechanical structure level, prohibit two valves to be opened simultaneously, avoid the pressure fluctuation of pipeline caused by misoperation.

Description

Technical Field

[0001] This invention relates to the field of geothermal reinjection diversion technology, specifically a geothermal reinjection diversion device that is easy to switch. Background Technology

[0002] The geothermal reinjection diversion device is a core supporting equipment developed to address the pain points of traditional geothermal reinjection. In the current large-scale utilization of geothermal resources, reinjection is a key link to ensure the balance between extraction and injection and maintain the long-term operation of the system. However, the traditional direct injection method has a fast tailwater flow rate and makes it difficult for air bubbles in the water to be released, which can easily cause aquifer blockage and continuous increase in reinjection pressure. Therefore, the diversion device has become an industry necessity. When in use, the device is installed in series on the pipeline between the wellhead submersible pump and the ground heat exchanger, and is connected to the main pumping pipe, the main reinjection pipe and the branch pipe in the well. In daily operation, the pumping heat exchange and tailwater reinjection conditions can be switched through the valve assembly. The opening of each branch can be finely adjusted according to the on-site reinjection pressure. During maintenance, the corresponding branch can be closed individually without shutting down the entire system. Its core working principle is diversion and pressure reduction and air venting. The entire device automatically adapts to the working conditions by water flow pressure difference, without the need for additional power. While reducing construction costs, it significantly extends the stable operation cycle of geothermal wells.

[0003] In practical engineering applications, existing geothermal reinjection diversion devices generally adopt a manual valve switching operation mode, which can basically meet the switching needs of daily routine operation. However, the valves of most current devices are relatively independent and lack a matching interlocking constraint structure. The operation mode switching often requires on-site operation and maintenance personnel to operate multiple valves in a fixed sequence. Due to individual differences in the professional experience and operating habits of on-site operation and maintenance personnel, coupled with the fact that geothermal stations often have shift handover and night duty scenarios, it is difficult to achieve completely unified operating standards. Occasionally, incorrect opening and closing sequences may occur, affecting reinjection efficiency and the stability of pumping conditions. In severe cases, it may cause a short-term sudden change in pipeline pressure, bringing unnecessary load impact to the well structure and aquifer, increasing equipment wear and operation and maintenance risks.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a geothermal reinjection diversion device that is easy to switch, in order to solve the problem mentioned in the background art that the valves are relatively independent and lack a matching interlocking constraint structure. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a geothermal reinjection diversion device that is easy to switch, comprising an extraction pipe and a reinjection pipe, wherein an extraction valve is provided on the side wall of the extraction pipe, and a reinjection valve is provided on the side wall of the reinjection pipe; both the extraction valve and the reinjection valve have rotating valve stems rotatably mounted on their side walls; a rotating handle is fixed to the end of the rotating valve stem; a fixed seat is installed on the surface of both the extraction valve and the reinjection valve; a pressing seat is fixed on the surface of the fixed seat; an assist component is provided inside the pressing seat; and a limit component is provided inside the fixed seat. The assistive component includes a first slide groove formed in the pressing seat, a first pressing block slidably installed in the first slide groove, a push block fixed at the top of the first pressing block, a second pressing block slidably installed in the first slide groove, and a bidirectional extrusion block fixed at the bottom of the second pressing block. It also includes a second slide groove formed in the pressing seat, in which a slide frame is slidably installed, and a roller is rotatably installed in the slide frame.

[0007] Preferably, the rotating handle on the side wall of the extraction valve is located at the upper right of the fixed seat, and the rotating handle on the side wall of the reinjection valve is located at the lower left of the fixed seat.

[0008] Preferably, the bottom end of the first pressing block is inclined, the top end of the second pressing block is inclined, and a reset spring is provided on the surface of the second pressing block.

[0009] Preferably, one side of the roller is slidably connected to the bottom end of the first pressing block, and the other side of the roller is slidably connected to the top end of the second pressing block.

[0010] Preferably, both ends of the bidirectional extrusion block extend out of the side wall of the pressing seat, and both ends of the bidirectional extrusion block are designed to be inclined.

[0011] Preferably, the limiting component includes a conical block slidably mounted in the fixed base, the top of the conical block having a limiting groove, and the conical block having a guide groove inside; It also includes a protrusion fixed to the bottom of the rotating handle and a guide block fixed to the surface of the rotating valve stem; It also includes a first movable cavity and a second movable cavity formed in the fixed base, wherein a first limiting post is elastically limited and slidable in the first movable cavity, and a second limiting post is elastically limited and slidable in the second movable cavity.

[0012] Preferably, a compression spring is provided at the bottom of the conical block, and the inner wall of the fixing seat is designed with an inner conical slope that matches the conical block.

[0013] Preferably, the protrusion is located in the limiting groove, and the guide block is located in the guide groove.

[0014] Preferably, the first and second movable cavities are filled with oil, and each of the first and second movable cavities is provided with an extension spring. The ends of the first and second limiting posts are both designed to be inclined.

[0015] Preferably, the first movable chamber at the extraction valve position and the second movable chamber at the reinjection valve position are connected by a hose, and the second movable chamber at the extraction valve position and the first movable chamber at the reinjection valve position are connected by a hose, thereby forcibly restricting the operating sequence of the extraction valve 102 and the reinjection valve 103.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention optimizes the operational experience of switching operating conditions by setting a fixed base, a pressing base, and an assistive component. The assistive component relays and amplifies the force, reducing the force load of manual operation. It eliminates the static resistance caused by the tight engagement between the rotating valve stem and the extraction valve in the initial state, reducing the force load of manual operation. This allows maintenance personnel to smoothly push the rotating handle to unlock with less force, shortening the operation time of switching operating conditions, avoiding additional wear on the rotating valve stem seal caused by brute force operation, extending the service life of each component, and improving the operational efficiency of switching operating conditions and the stability of system operation.

[0017] 2. This invention, through the setting of a rotating handle, rotating valve stem, and limiting components, forcibly restricts the operation sequence of the extraction valve and reinjection valve from a mechanical structure level, prohibiting the simultaneous opening of the two valves. This ensures that maintenance personnel can follow the workflow of closing before opening, avoids pipeline pressure fluctuations caused by misoperation, and ensures the operational stability and long-term reliability of the geothermal reinjection system. At the same time, it counteracts the reverse torque caused by long-term operation of geothermal equipment and continuous pipeline vibration, restricts the reverse rotation of the rotating valve stem, reduces the risk of leakage, and improves the overall operational stability and long-term service reliability of the geothermal reinjection system. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the fixing base of the present invention; Figure 3 This is a cross-sectional view of the fixing seat and pressing seat of the present invention; Figure 4 This is a schematic diagram of the structure of the assist component of the present invention; Figure 5 This is a schematic diagram of the disassembled structure of the assisting component of the present invention; Figure 6 This is a cross-sectional view of the pressing seat of the present invention; Figure 7 This is a cross-sectional view of the fixing base of the present invention; Figure 8 This is a cross-sectional view of the conical block of the present invention; Figure 9 This is a schematic diagram of the rotating handle, rotating valve stem, and conical block of the present invention.

[0019] In the diagram: 1. Extraction pipe; 101. Reinjection pipe; 102. Extraction valve; 103. Reinjection valve; 2. Fixed seat; 201. Pressing seat; 202. First slide groove; 203. Second slide groove; 3. Push block; 301. First pressing block; 302. Slide frame; 303. Roller; 304. Second pressing block; 305. Bidirectional extrusion block; 4. Rotating handle; 401. Rotating valve stem; 402. Protrusion; 403. Guide block; 5. Conical block; 501. Limiting groove; 502. Guide groove; 6. First movable cavity; 601. First limiting post; 7. Second movable cavity; 701. Second limiting post. Detailed Implementation

[0020] Please see Figures 1-9 This invention provides a technical solution: a geothermal reinjection diversion device that is easy to switch, including an extraction pipe 1 and a reinjection pipe 101. An extraction valve 102 is provided on the side wall of the extraction pipe 1, and a reinjection valve 103 is provided on the side wall of the reinjection pipe 101. A rotating valve stem 401 is rotatably installed on the side wall of both the extraction valve 102 and the reinjection valve 103. A rotating handle 4 is fixed at the end of the rotating valve stem 401. A fixed seat 2 is installed on the surface of both the extraction valve 102 and the reinjection valve 103. A pressing seat 201 is fixed on the surface of the fixed seat 2. An assist component is provided inside the pressing seat 201. The assist component reduces the operating force for opening the valve, so that maintenance personnel of different strengths can easily complete the operation. A limit component is provided inside the fixed seat 2. The assistive component includes a first slide groove 202 opened in the pressing seat 201, a first pressing block 301 slidably installed in the first slide groove 202, a push block 3 fixed at the top of the first pressing block 301, a second pressing block 304 slidably installed in the first slide groove 202, and a bidirectional extrusion block 305 fixed at the bottom of the second pressing block 304. It also includes a second slide groove 203 formed in the pressing seat 201, a slide frame 302 is slidably installed in the second slide groove 203, and a roller 303 is rotatably installed in the slide frame 302. The second slide groove 203 limits the movement trajectory of the slide frame 302 and the roller 303.

[0021] In one embodiment of the present invention, the rotating handle 4 provided on the side wall of the extraction valve 102 is located at the upper right of the fixed base 2, and the rotating handle 4 provided on the side wall of the reinjection valve 103 is located at the lower left of the fixed base 2. The staggered positions of the rotating handles 4 correspond to the mode switching, making it easy to distinguish the states of the extraction valve 102 and the reinjection valve 103.

[0022] In one embodiment of the present invention, the bottom end of the first pressing block 301 is inclined, and the top end of the second pressing block 304 is inclined. A reset spring is provided on the surface of the second pressing block 304. The inclination angle of the bottom end of the first pressing block 301 is greater than the inclination angle of the top end of the second pressing block 304. During the process of the on-site maintenance personnel applying force to press down, the force is amplified for the first time by the first pressing block 301 pressing the roller 303 to slide, and then the roller 303 presses the second pressing block 304 to achieve a second amplification of the force. The force is transmitted and amplified by the two-stage inclined structure, reducing the force load of manual operation.

[0023] In one embodiment of the present invention, one side of the roller 303 is slidably connected to the bottom end of the first pressing block 301, and the other side of the roller 303 is slidably connected to the top end of the second pressing block 304. The roller 303 converts the sliding friction with the inclined surface into rolling friction, thereby reducing the resistance during the transmission process.

[0024] As one embodiment of the present invention, the two ends of the bidirectional extrusion block 305 extend out of the side wall of the pressing seat 201. Both ends of the bidirectional extrusion block 305 are inclined, so the amplified force can be directly applied to the bidirectional extrusion block 305. The vertical downward pressure is converted into thrust through the inclined surface, which breaks the static friction resistance of the rotating valve rod 401. The two ends of the bidirectional extrusion block 305 are inclined, which ensures that the force can push the rotating handle 4 whether the rotating handle 4 is in the open or closed state.

[0025] As one embodiment of the present invention, the limiting component includes a conical block 5 slidably installed in the fixed base 2, a limiting groove 501 is formed at the top of the conical block 5, and a guide groove 502 is formed in the conical block 5. It also includes a protrusion 402 fixed to the bottom of the rotating handle 4 and a guide block 403 fixed to the surface of the rotating valve stem 401 to suppress the rotating valve stem 401 from reversing and loosening, and reduce the problem of medium leakage caused by seal displacement. It also includes a first movable chamber 6 and a second movable chamber 7 opened in the fixed seat 2. The first movable chamber 6 has a first limiting post 601 that is elastically limited and slidable, and the second movable chamber 7 has a second limiting post 701 that is elastically limited and slidable. This fundamentally regulates the operating sequence of the extraction valve 102 and the reinjection valve 103 to close first and then open, avoiding the risks of sudden changes in pipeline pressure and impact on underground aquifers caused by the simultaneous opening of the two valves.

[0026] As one embodiment of the present invention, a compression spring is provided at the bottom of the conical block 5, and the inner wall of the fixed seat 2 is designed with an inner conical slope that matches the conical block 5. Under normal conditions, the compression spring continuously outputs compression force, and the conical block 5 and the inner conical slope of the fixed seat 2 are closely fitted to generate sufficient static friction force, which reliably locks the rotating valve stem 401 and restricts the spontaneous movement of the rotating valve stem 401.

[0027] In one embodiment of the present invention, the protrusion 402 is located in the limiting groove 501, and the guide block 403 is located in the guide groove 502. During the rotation of the rotating handle 4, the protrusion 402 fixed at the bottom of the rotating handle 4 rotates synchronously. The protrusion 402 is located in the limiting groove 501. During the rotation of the protrusion 402, it continuously squeezes the inner side wall of the limiting groove 501, thereby pushing the conical block 5 to squeeze the compression spring.

[0028] In one embodiment of the present invention, the first movable cavity 6 and the second movable cavity 7 are filled with oil, and both the first movable cavity 6 and the second movable cavity 7 are provided with an extension spring. The ends of the first limiting post 601 and the second limiting post 701 are both designed to be inclined, thus forming a stable and reliable hydraulic linkage interlocking structure.

[0029] In one embodiment of the present invention, the first movable chamber 6 located at the extraction valve 102 position and the second movable chamber 7 located at the reinjection valve 103 position are connected by a hose, and the second movable chamber 7 located at the extraction valve 102 position and the first movable chamber 6 located at the reinjection valve 103 position are connected by a hose.

[0030] Working principle: When switching between extraction and reinjection modes using this easily switchable geothermal reinjection diversion device, the on-site maintenance personnel first press the push block 3 located at the extraction valve 102 on the side wall of the extraction pipe 1. The push block 3 pushes the first pressing block 301 to slide smoothly along the first sliding groove 202 into the pressing seat 201. Because the bottom end of the first pressing block 301 is slidably connected to the roller 303, and the roller 303 is rotatably installed in the sliding frame 302, while the sliding frame 302 limits... The first pressing block 301 slides into the second sliding groove 203. As a result, the first pressing block 301 slides into the pressing seat 201 under force, while its inclined bottom end applies a lateral force to the roller 303. The roller 303 drives the sliding frame 302 to move laterally along the second sliding groove 203. At the same time, the other side of the roller 303 is slidably connected to the top of the inclined design of the second pressing block 304. During the lateral movement of the roller 303, the second pressing block 304 is driven to slide into the pressing seat 201 in sync. Since the tilt angle of the bottom end of the first pressing block 301 is greater than the tilt angle of the top end of the second pressing block 304, during the process of the on-site maintenance personnel applying force to press down, the force is amplified for the first time by the first pressing block 301 pressing the roller 303 to slide, and then the roller 303 presses the second pressing block 304 to achieve the second amplification of the force. The force is relayed and amplified through the two-stage inclined structure, reducing the force load of manual operation. The amplified force is directly transmitted to the bidirectional extrusion block 305 fixedly connected to the second pressing block 304. The two ends of the bidirectional extrusion block 305 extend out of the side wall of the pressing seat 201, and both ends of the bidirectional extrusion block 305 are inclined. When the bidirectional extrusion block 305 moves down, its inclined end directly abuts against the side wall of the rotating handle 4. Guided by the inclined surface, the rotating handle 4 is pushed to rotate around the rotating valve stem 401, breaking the static resistance caused by the relatively tight engagement between the rotating valve stem 401 and the extraction valve 102 in the initial state, so that the maintenance personnel can push the rotating handle 4 smoothly to unlock with a small force. When the rotating handle 4 at the extraction valve 102 is not rotated, it is located at the lower left of the fixed base 2, pressing the end of the first limiting post 601 so that it is located in the first movable cavity 6. Since the first movable cavity 6 is connected to the second movable cavity 7 at the reinjection valve 103 through a hose, and both the first movable cavity 6 and the second movable cavity 7 are filled with oil, the second limiting post 701 at the reinjection valve 103 extends completely out of the surface of the fixed base 2 along the second movable cavity 7, forming a positional constraint on the rotating handle 4 at the reinjection valve 103, preventing it from being turned, thus avoiding the possibility of the reinjection valve 103 being accidentally opened from the structural source. The maintenance personnel push the rotating handle 4 set on the side wall of the extraction valve 102 to rotate around the rotating valve stem 401 on the surface of the fixed seat 2, so that it rotates from the lower left position of the fixed seat 2 to the upper right position, closing the extraction valve 102. As the rotation process progresses, the side wall of the rotating handle 4 contacts and presses the inclined end of the second limiting post 701, causing it to retract into the second movable cavity 7 without affecting the rotation of the rotating handle 4. When the rotating handle 4 rotates to the upper right position of the fixed seat 2, the second limiting post 701 loses the pressure and returns to the initial state. At this time, the first limiting post 601 loses its limit at the same time and extends out of the surface of the fixed seat 2 under the action of the extension spring. The first limiting post 601 and the second limiting post 701 set at the position of the reinjection valve 103 maintain a balanced extension length under the action of the extension spring. At this time, the side wall of the rotating handle 4 located at the recharge valve 103 position can contact and press the inclined end of the second limiting post 701. When rotating the rotating handle 4 around the rotating valve stem 401 to open the recharge valve 103 and start the recharge operation, the inclined end of the second limiting post 701 is pressed into the second movable cavity 7, without interfering with the rotation stroke of the rotating handle 4. When the rotating handle 4 located at the recharge valve 103 position rotates from the upper right to the lower left of the surface of the fixed seat 2, the first limiting post 601 located at the recharge valve 103 position is pressed and completely enters the first movable cavity 6. Since the first movable chamber 6 is connected to the second movable chamber 7 provided at the extraction valve 102 through a hose, the second movable chamber 7 provided at the extraction valve 102 extends completely out of the surface of the fixed seat 2, thus limiting the position of the rotating handle 4 at the position of the extraction valve 102, preventing it from being turned, forcibly restricting the operation sequence of the extraction valve 102 and the reinjection valve 103, prohibiting the two valves from being opened at the same time, ensuring that the operation and maintenance personnel can follow the work process of closing before opening, avoiding pipeline pressure fluctuations caused by misoperation, and ensuring the operational stability and long-term reliability of the geothermal reinjection system; During the rotation of the handle 4, the protrusion 402 fixed at the bottom of the handle 4 rotates synchronously. The protrusion 402 is located in the limiting groove 501. During the rotation of the protrusion 402, it continuously squeezes the inner wall of the limiting groove 501, thereby pushing the conical block 5 to squeeze the compression spring. With the cooperation of the guide groove 502 and the guide block 403, the conical block 5 moves smoothly away from the inner wall of the fixed seat 2, which has an inner conical slope design. At this time, the outer conical surface of the conical block 5 and the inner conical surface of the fixed seat 2 change from a close state to a separated state. The pressing friction between the two disappears, the locking state is released, and the handle 4 can smoothly drive the valve stem 401 to rotate and switch working conditions. Under the conditions of long-term operation of geothermal equipment and continuous pipeline vibration, when the rotating valve stem 401 shows a tendency to reverse and loosen, the compression spring always pushes the conical block 5 to stick tightly to the inner conical surface of the fixed seat 2. Relying on the contact of the conical surface to maintain a large static friction force, it offsets the reverse torque caused by vibration, effectively restricts the reverse rotation of the rotating valve stem 401, and reduces the risk of leakage.

[0031] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A geothermal reinjection diversion device that is easy to switch between, comprising an extraction pipe (1) and a reinjection pipe (101), characterized in that: The extraction pipe (1) is provided with an extraction valve (102) on its side wall, and the reinjection pipe (101) is provided with a reinjection valve (103) on its side wall. Both the extraction valve (102) and the reinjection valve (103) are rotatably mounted with a rotating valve rod (401). The end of the rotating valve rod (401) is fixed with a rotating handle (4). Both the extraction valve (102) and the reinjection valve (103) are mounted with a fixed seat (2). The fixed seat (2) is fixed with a pressing seat (201). The pressing seat (201) is provided with an assist component. The fixed seat (2) is provided with a limit component. The assist component includes a first groove (202) formed in the pressing seat (201), a first pressing block (301) is slidably installed in the first groove (202), a push block (3) is fixed at the top of the first pressing block (301), a second pressing block (304) is slidably installed in the first groove (202), and a bidirectional extrusion block (305) is fixed at the bottom of the second pressing block (304). It also includes a second slide groove (203) opened in the pressing seat (201), a slide frame (302) is slidably installed in the second slide groove (203), and a roller (303) is rotatably installed in the slide frame (302).

2. The geothermal reinjection diversion device with convenient switching according to claim 1, characterized in that: The rotating handle (4) on the side wall of the extraction valve (102) is located on the upper right of the fixed seat (2), and the rotating handle (4) on the side wall of the recharge valve (103) is located on the lower left of the fixed seat (2).

3. The geothermal reinjection diversion device with convenient switching according to claim 1, characterized in that: The bottom of the first pressing block (301) is inclined, the top of the second pressing block (304) is inclined, and a reset spring is provided on the surface of the second pressing block (304).

4. The geothermal reinjection diversion device with convenient switching according to claim 1, characterized in that: One side of the roller (303) is slidably connected to the bottom end of the first pressing block (301), and the other side of the roller (303) is slidably connected to the top end of the second pressing block (304).

5. The geothermal reinjection diversion device with convenient switching according to claim 1, characterized in that: The two ends of the bidirectional extrusion block (305) extend out of the side wall of the pressing seat (201), and both ends of the bidirectional extrusion block (305) are designed to be inclined.

6. The geothermal reinjection diversion device with convenient switching according to claim 1, characterized in that: The limiting component includes a conical block (5) that is slidably installed in the fixed base (2), a limiting groove (501) is provided at the top of the conical block (5), and a guide groove (502) is provided in the conical block (5); It also includes a protrusion (402) fixed to the bottom of the rotating handle (4) and a guide block (403) fixed to the surface of the rotating valve stem (401). It also includes a first movable cavity (6) and a second movable cavity (7) opened in the fixed base (2), wherein a first limiting post (601) is elastically limited and slidable in the first movable cavity (6), and a second limiting post (701) is elastically limited and slidable in the second movable cavity (7).

7. A geothermal reinjection diversion device for convenient switching according to claim 6, characterized in that: The bottom of the conical block (5) is provided with a compression spring, and the inner wall of the fixing seat (2) is designed with an inner conical slope that matches the conical block (5).

8. A geothermal reinjection diversion device for convenient switching according to claim 6, characterized in that: The protrusion (402) is located in the limiting groove (501), and the guide block (403) is located in the guide groove (502).

9. A geothermal reinjection diversion device for convenient switching according to claim 6, characterized in that: The first movable cavity (6) and the second movable cavity (7) are filled with oil. Both the first movable cavity (6) and the second movable cavity (7) are provided with extension springs. The ends of the first limiting post (601) and the second limiting post (701) are both designed to be inclined.

10. A geothermal reinjection diversion device for convenient switching according to claim 6, characterized in that: The first movable chamber (6) located at the extraction valve (102) and the second movable chamber (7) located at the reinjection valve (103) are connected by a hose.

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