A device and method for separating water vapor from fluid in a high-temperature geothermal well

Abstract

This invention discloses a high-temperature geothermal well fluid water vapor separation device and method. The device includes a separation tank and heat exchange tubes disposed inside the separation tank, with both the upper and lower ends of the heat exchange tubes extending outside the separation tank. The invention also includes an energy transducer assembly, which includes an outer cylinder, a fixed shaft disposed inside the outer cylinder, and a first, second, third, and fourth helical blades disposed on the fixed shaft and connected to the interior of the outer cylinder. An air outlet is provided at the upper end of the outer cylinder, and a drain outlet is provided at the lower end. An inlet and an outlet are provided on the side of the separation tank. A first flow channel is formed between the first and second helical blades, a second flow channel is formed between the second and third helical blades, and a third flow channel is formed between the third and fourth helical blades. This invention effectively solves the technical problem in the prior art where high-temperature geothermal water dissipates heat into the air in the form of water vapor, resulting in heat waste.

Description

Technical Field

[0001] This invention relates to the field of geothermal water vapor separation technology, specifically to a high-temperature geothermal well fluid water vapor separation device and method. Background Technology

[0002] Geothermal wells refer to methods and devices for generating electricity from geothermal energy or hot spring water with a temperature greater than 30℃ at a depth of about 3500 meters. Geothermal energy is classified into three categories: high-temperature, medium-temperature, and low-temperature. High-temperature geothermal energy exists in the form of steam at temperatures above 150℃; medium-temperature geothermal energy exists in the form of a mixture of water and steam at temperatures between 90℃ and 150℃; and low-temperature geothermal energy exists in the form of warm water, warm-hot water, or hot water at temperatures above 25℃ and below 90℃.

[0003] Developing and utilizing geothermal energy is of great significance for achieving energy conservation and emission reduction, and adjusting the energy consumption structure. Information reflected in geothermal fluids, such as the heat source properties, reservoir temperature, recharge source, and water circulation time, is crucial for scientifically guiding the development and utilization of geothermal energy. Fluid samples from geothermal extraction wells can be categorized into water vapor, geothermal water, and non-condensable gases.

[0004] In existing technologies, when using high-temperature fluids, heat exchange is generally used to utilize the fluids, and the utilized high-temperature fluids are then reinjected through reinjection wells. However, in actual use, some of the heat from the high-temperature geothermal water will diffuse into the air in the form of water vapor, and the heat in the water vapor will not be effectively utilized, resulting in a loss of heat dissipation. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature geothermal well fluid water vapor separation device, which can effectively solve the technical problem in the prior art where high-temperature geothermal water dissipates heat into the air in the form of water vapor, resulting in heat waste.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A high-temperature geothermal well fluid vapor-water separation device includes a separation tank and heat exchange tubes disposed inside the separation tank. The heat exchange tubes extend both their upper and lower ends to the outside of the separation tank. The invention also includes a transducer assembly, which comprises an outer cylinder, a fixed shaft disposed inside the outer cylinder, and first, second, third, and fourth helical blades disposed on the fixed shaft and connected to the inside of the outer cylinder. An air outlet is provided at the upper end of the outer cylinder, and a drain outlet is provided at the lower end. An inlet and an outlet are provided on the side of the separation tank.

[0008] A first flow channel is formed between the first and second helical blades; a second flow channel is formed between the second and third helical blades; a third flow channel is formed between the third and fourth helical blades; and a fourth flow channel is formed between the first and fourth helical blades.

[0009] The second flow channel is connected to the gas outlet, the first and third flow channels are connected to the liquid outlet, and the drainage outlet is used to connect to the geothermal reinjection well.

[0010] The heat exchange tubes are made of thermally conductive material.

[0011] Further optimization involves the heat exchange tubes being composed of several heat exchange coils connected end to end.

[0012] A fan is installed at the air outlet.

[0013] A water washing tower is installed at the air outlet.

[0014] Further optimization involves connecting a diverter to the outlet, with the two outlet ends of the diverter connected to the first and third flow channels via pipes, respectively.

[0015] The heat exchange tubes have a continuous U-shaped or spiral structure.

[0016] The first, second, third, and fourth helical blades are welded together with the fixed shaft, and a heat-resistant sealing strip is provided between the first, second, third, and fourth helical blades and the outer cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention achieves the separation of geothermal fluid water vapor through a separation tank. After the high-temperature geothermal fluid enters the separation tank, it directly exchanges heat with the heat exchange medium in the heat exchange tubes, realizing the utilization of geothermal energy. Water vapor is separated within the separation tank; the water vapor directly enters the energy exchange component. Simultaneously, the geothermal fluid, after heat exchange, enters the first and third flow channels of the energy exchange component, while the high-temperature water vapor enters the second flow channel. Here, the high-temperature water vapor directly heats the spiral blades and the fluid. After heating the fluid, it is reinjected into the reinjection well, increasing the temperature of the reinjected geothermal fluid. The cooled water vapor is then discharged through the outlet. As the water vapor flows through the second and fourth flow channels, it directly heats the geothermal fluid in the first and third flow channels, effectively improving heat exchange efficiency. This invention effectively solves the technical problem in existing technologies where high-temperature geothermal water dissipates heat into the air in the form of water vapor, resulting in heat waste. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram showing the connection relationship between the fixed shaft and the helical blades of the present invention.

[0022] Figure label:

[0023] 101-Separation tank, 102-Heat exchange tube, 103-Transducer assembly, 104-Outer cylinder, 105-Fixed shaft, 106-Helical blade, 107-First helical blade, 108-Second helical blade, 109-Third helical blade, 110-Fourth helical blade, 111-Gas outlet, 112-Drain outlet, 113-Liquid inlet, 114-Liquid outlet, 115-First flow channel, 116-Second flow channel, 117-Third flow channel, 118-Fourth flow channel, 119-Diverter connector. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0025] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0028] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0030] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] Example 1

[0032] See Figure 1 and Figure 2This embodiment discloses a high-temperature geothermal well fluid vapor-water separation device, including a separation tank 101 and a heat exchange tube 102 disposed inside the separation tank 101. The upper and lower ends of the heat exchange tube 102 extend to the outside of the separation tank 101. This embodiment also includes a transducer assembly 103, which includes an outer cylinder 104, a fixed shaft 105 disposed inside the outer cylinder 104, and spiral blades 106 disposed on the fixed shaft 105 and connected to the inside of the outer cylinder 104. The spiral blades 106 specifically include: a first spiral blade 107, a second spiral blade 108, a third spiral blade 109, and a fourth spiral blade 110. The outer cylinder 104 has an air outlet 111 at its upper end and a drain outlet 112 at its lower end. The separation tank 101 has a liquid inlet 113 and a liquid outlet 114 on its side.

[0033] A first flow channel 115 is formed between the first helical blade 107 and the second helical blade 108; a second flow channel 116 is formed between the second helical blade 108 and the third helical blade 109; a third flow channel 117 is formed between the third helical blade 109 and the fourth helical blade 110; and a fourth flow channel 118 is formed between the first helical blade 107 and the fourth helical blade 110.

[0034] The second flow channel 116 is connected to the gas outlet 111, the first flow channel 115 and the third flow channel 117 are connected to the liquid outlet 114, and the drain outlet 112 is used to connect to the geothermal reinjection well.

[0035] This invention achieves the separation of geothermal fluid and water vapor through a separation tank 101. After the high-temperature geothermal fluid enters the separation tank 101, it directly exchanges heat with the heat exchange medium in the heat exchange tube 102, thus utilizing geothermal energy. Water vapor is separated in the separation tank 101, with the water vapor directly entering the energy exchange component 103. Simultaneously, the geothermal fluid, after heat exchange, enters the first flow channel 115 and the third flow channel 117 in the energy exchange component 103, while the high-temperature water vapor enters the second flow channel 116. At this point, the high-temperature water vapor will... The spiral blades 106 are directly heated, thus heating the fluid. After the fluid is heated, it is reinjected into the reinjection well, increasing the temperature of the reinjected geothermal fluid. The cooled water vapor is then discharged through the outlet 111. When the water vapor flows through the second and fourth channels 118, it can directly heat the geothermal fluid in the first and third channels 117, effectively improving the heat exchange efficiency. This invention effectively solves the technical problem in the prior art where high-temperature geothermal water dissipates heat into the air in the form of water vapor, resulting in heat waste.

[0036] This invention not only realizes the utilization of geothermal fluids, but also realizes the recovery and utilization of heat energy in the water vapor of geothermal fluids, thereby increasing the temperature of reinjected geothermal fluids and ensuring the sustainable utilization of geothermal energy.

[0037] More importantly, the present invention, through the first helical blade 107, the second helical blade 108, the third helical blade 109, and the fourth helical blade 110 forming the first flow channel 115, the second flow channel 116, the third flow channel 117, and the fourth flow channel 118, can achieve efficient heat exchange between geothermal fluid and water vapor, effectively extending the heat exchange path and heat exchange time. Since the first flow channel 115, the second flow channel 116, the third flow channel 117, and the fourth flow channel 118 are helical, in actual use, the geothermal fluid and water vapor are in a tumbling state, which can effectively improve the heat exchange efficiency during contact.

[0038] The heat exchange tube 102 is made of thermally conductive material.

[0039] Further optimization involves heat exchange tube 102 being composed of several heat exchange coils connected end to end.

[0040] A fan is installed at the air outlet 111 to improve the flow of water vapor and increase its flow rate.

[0041] The air outlet is equipped with a water washing tower, which facilitates the neutralization and filtration of toxic substances in the water vapor.

[0042] The outlet 114 is connected to a diverter 119, and the two outlets of the diverter 119 are connected to the first flow channel 115 and the third flow channel 117 respectively through pipes.

[0043] Alternatively, the heat exchange tubes can be in a continuous U-shaped or spiral structure.

[0044] Further optimization resulted in a conical structure at the bottom of the outer cylinder 104.

[0045] In actual use, the upper ends of the first, second and third flow channels are in a closed state.

[0046] Example 2

[0047] This embodiment is a further optimization based on Embodiment 1. In this embodiment, the first helical blade 107, the second helical blade 108, the third helical blade 109, and the fourth helical blade 110 are welded together with the fixed shaft 105. A heat-resistant sealing strip is provided between the first helical blade 107, the second helical blade 108, the third helical blade 109, the fourth helical blade 110 and the outer cylinder 104.

[0048] The spiral blade 106 is directly welded to the fixed shaft 105, which makes the welding process more convenient. At the same time, the heat-resistant sealing strip is used to seal the gap between the spiral blade 106 and the outer cylinder 104, which can effectively reduce the manufacturing difficulty of the energy-generating components.

[0049] Example 3

[0050] This embodiment discloses a method for separating water vapor from fluid in a high-temperature geothermal well, which includes using the high-temperature geothermal well fluid water vapor separation device described in Embodiment 1 to separate water vapor, and can recover and utilize the heat energy in the separated water vapor.

[0051] After the high-temperature geothermal fluid enters the separator 101, it directly exchanges heat with the heat exchange medium in the heat exchange tube 102, realizing the utilization of geothermal energy. The geothermal fluid undergoes water vapor separation in the separator 101, with the water vapor directly entering the energy exchange component 103. Simultaneously, the geothermal fluid, after heat exchange, enters the first flow channel 115 and the third flow channel 117 in the energy exchange component 103, while the high-temperature water vapor enters the second flow channel 116. Here, the high-temperature water vapor directly heats the spiral blades 106, thus heating the fluid. After heating the fluid, it is reinjected into the reinjection well, increasing the reinjection temperature of the geothermal fluid. The cooled water vapor is discharged through the outlet 111. When the water vapor flows through the second and fourth flow channels 118, it can directly heat the geothermal fluid in the first and third flow channels 117, effectively improving the heat exchange efficiency.

[0052] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional 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 that fall within the scope of the present invention.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature geothermal well fluid vapor-water separation device, comprising a separation tank and heat exchange tubes disposed inside the separation tank, wherein the upper and lower ends of the heat exchange tubes extend to the outside of the separation tank, characterized in that: It also includes a transducer assembly, which comprises an outer cylinder, a fixed shaft disposed inside the outer cylinder, and a first spiral blade, a second spiral blade, a third spiral blade, and a fourth spiral blade disposed on the fixed shaft and connected to the interior of the outer cylinder. An air outlet is provided at the upper end of the outer cylinder, and a drain outlet is provided at the lower end. An inlet and an outlet are provided on the side of the separator. A first flow channel is formed between the first and second helical blades; a second flow channel is formed between the second and third helical blades; a third flow channel is formed between the third and fourth helical blades; and a fourth flow channel is formed between the first and fourth helical blades. The second flow channel is connected to the gas outlet, the first and third flow channels are connected to the liquid outlet, and the drainage outlet is used to connect to the geothermal reinjection well. After heat exchange, the geothermal fluid enters the first and third channels of the energy transducer, while the high-temperature water vapor enters the second channel. At this time, the high-temperature water vapor will directly heat the spiral blades and the fluid. After the fluid is heated, it is reinjected into the reinjection well, which increases the temperature of the reinjected geothermal fluid. The cooled water vapor is discharged through the outlet. When the water vapor flows through the second and fourth channels, it can directly heat the geothermal fluid in the first and third channels.

2. The high-temperature geothermal well fluid vapor-water separation device according to claim 1, characterized in that: The heat exchange tubes are made of thermally conductive material.

3. The high-temperature geothermal well fluid vapor-water separation device according to claim 1, characterized in that: The heat exchange tubes consist of several heat exchange coils connected end to end.

4. The high-temperature geothermal well fluid vapor-water separation device according to claim 1, characterized in that: A fan is installed at the air outlet.

5. A high-temperature geothermal well fluid vapor-water separation device according to claim 1, characterized in that: A water washing tower is installed at the air outlet.

6. The high-temperature geothermal well fluid vapor-water separation device according to claim 1, characterized in that: The outlet is connected to a diverter, and the two outlets of the diverter are connected to the first flow channel and the third flow channel respectively through pipes.

7. The high-temperature geothermal well fluid vapor-water separation device according to claim 1, characterized in that: The heat exchange tubes have a continuous U-shaped or spiral structure.

8. A high-temperature geothermal well fluid vapor-fluid separation device according to any one of claims 1-7, characterized in that: The first, second, third, and fourth helical blades are welded together with the fixed shaft, and a heat-resistant sealing strip is provided between the first, second, third, and fourth helical blades and the outer cylinder.

9. A method for separating water vapor from fluid in a high-temperature geothermal well, characterized in that: This includes using a high-temperature geothermal well fluid water vapor separation device as described in any one of claims 1-8 for water vapor separation.

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