A geothermal wellbore pressure stabilizing anti-scaling throttling device

Abstract

The utility model belongs to geothermal wellbore technical field discloses a kind of geothermal wellbore pressure stabilizing formula scale inhibition throttling device, including throttling device main part;Throttling device main part is the barrel type structure of hollow and both ends opening;Wherein, the import end of throttling device main part is used to connect with geothermal wellbore liquid outlet pipeline, the export end of throttling device main part is used to connect with geothermal wellhead delivery pipeline;Buffering flow guide subassembly is arranged inside the import end of throttling device main part, for buffering and flow guiding to high-temperature high-pressure fluid in throttling device main part;Gradual change steady flow subassembly is arranged inside the export end of throttling device main part, for making the fluid after buffering and flow guiding to flow out in the export end of throttling device main part with stable laminar flow state;The utility model can reduce the mutation of fluid pressure and flow rate in throttling device main part all the way, realize inhibiting scale generation from source, so as to can greatly reduce scale removal frequency and maintenance cost, guarantee the continuous production of geothermal wellbore.

Description

Technical Field

[0001] This utility model belongs to the field of geothermal well technology, and specifically relates to a pressure-stabilizing anti-scaling and throttling device for geothermal wells. Background Technology

[0002] During the production and operation of geothermal wells, geothermal fluids flow from the high-temperature and high-pressure underground layer to the low-pressure wellhead. Throttling devices must be used to control the flow rate and pressure. Throttling devices commonly used in existing technologies (such as ordinary throttle valves, orifice plates, etc.) focus on flow control. Their flow channel design is usually relatively simple, and most of them adopt the abrupt (sudden contraction / expansion) throttling method.

[0003] However, because geothermal fluids are typically rich in CO2 and Ca... 2+ HCO3 - Due to the composition of components such as gas and water, the existing flow channel design of throttling devices is prone to drastic changes in local pressure and velocity of the fluid. Sudden pressure drops can easily lead to CO2 precipitation and CaCO3 scaling, thereby reducing heat exchange efficiency, clogging the flow channel, and requiring frequent scaling removal, resulting in high maintenance costs and affecting continuous production. In addition, geothermal fluids are characterized by high temperature, high mineralization, and strong corrosiveness, and the existing device materials or linings have insufficient corrosion resistance, resulting in a short service life. Therefore, there is an urgent need to provide a new anti-scaling throttling device for geothermal wells. Utility Model Content

[0004] In view of the technical problems existing in the prior art, this utility model provides a geothermal well pressure stabilizing anti-scaling and throttling device to solve the technical problem that the flow channel design of the existing throttling device is prone to causing drastic changes in local fluid pressure and flow velocity.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a geothermal wellbore pressure stabilizing anti-scaling and throttling device, including a throttling device body, a buffer flow guiding component, and a gradual flow stabilizing component; The main body of the throttling device is a hollow cylindrical structure with openings at both ends; wherein, the inlet end of the main body of the throttling device is used to connect to the liquid outlet pipeline of the geothermal well, and the outlet end of the main body of the throttling device is used to connect to the delivery pipeline of the geothermal wellhead. The buffer and flow guiding assembly is disposed inside the inlet end of the throttling device body and is used to buffer and guide the high-temperature and high-pressure fluid entering the throttling device body. The gradual flow stabilizing component is disposed inside the outlet end of the main body of the throttling device, and is used to allow the buffered and guided fluid to flow out in a stable laminar flow state at the outlet end of the main body of the throttling device.

[0006] Furthermore, the buffer guide assembly includes a guide cone and a buffer plate assembly; The buffer plate assembly is disposed inside the inlet end of the throttling device body; wherein, a pressure buffer cavity is formed between the buffer plate assembly and the inner wall of the inlet end of the throttling device body. The guide cone is disposed on the internal central axis of the throttling device body and is disposed near the inlet end of the throttling device body; wherein the tip of the guide cone is disposed towards the inlet end of the throttling device body.

[0007] Furthermore, the gradual flow stabilization component includes a gradual flow channel structure and a flow stabilization structure; The gradient flow channel structure is located inside the outlet end of the main body of the throttling device; The outer wall of the gradient flow channel structure is connected to the inner wall of the outlet end of the throttling device body, and a gradient flow channel is provided at the center of the gradient flow channel structure; wherein, the central axis of the gradient flow channel coincides with the central axis of the throttling device body, and the flow cross section of the gradient flow channel gradually decreases along the fluid flow direction. The flow stabilizing structure is located at a preset position on the wall of the gradient flow channel, and the flow stabilizing structure is used to suppress fluid turbulence.

[0008] Furthermore, the flow stabilizing structure is a circular ring structure; the outer side of the flow stabilizing structure is fixedly connected to the wall of the gradient flow channel, and the inner side of the flow stabilizing structure extends toward the central axis of the gradient flow channel.

[0009] Furthermore, the inner wall of the main body of the throttling device is provided with an anti-corrosion layer.

[0010] Furthermore, the anti-corrosion layer includes an anti-corrosion top layer and an anti-corrosion bottom layer, the anti-corrosion bottom layer is attached to the inner wall surface of the throttling device body, and the anti-corrosion top layer covers the surface of the anti-corrosion bottom layer.

[0011] Furthermore, it also includes annular reinforcing ribs; the annular reinforcing ribs are disposed on the outer side of the throttling device body and are distributed sequentially at intervals along the axial direction of the throttling device body.

[0012] Furthermore, this also includes imported components and exported components; The inlet component is located between the inlet end of the throttling device body and the outlet pipeline of the geothermal well, and the outlet component is located between the outlet end of the throttling device body and the geothermal wellhead delivery pipeline.

[0013] Furthermore, the imported components include an inlet connection flange and a water inlet pipe; One side of the inlet connecting flange is connected to the inlet end of the main body of the throttling device, the other side of the inlet connecting flange is connected to one end of the water inlet pipe, and the other end of the water inlet pipe is connected to the liquid outlet pipe of the geothermal well. The outlet assembly includes an outlet connection flange, a water outlet pipe, a cleaning pipe, and a removable blind flange; One side of the outlet connecting flange is connected to the outlet end of the main body of the throttling device, the other side of the outlet connecting flange is connected to one end of the water outlet pipe, and the other end of the water outlet pipe is connected to the geothermal wellhead conveying pipeline. The inlet end of the cleaning pipe is connected to the side wall of the outlet pipe, and the detachable blind plate is detachably installed at the outlet end of the cleaning pipe.

[0014] Furthermore, it also includes three pressure monitoring components; the three pressure monitoring components are used to collect the fluid pressure at a preset location on the main body of the throttling device; The first pressure monitoring component is located in the buffer flow guiding component, the second pressure monitoring component is located in the middle part of the gradual flow stabilizing component, and the third pressure monitoring component is located in the outlet side area of ​​the gradual flow stabilizing component.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The geothermal well pressure-stabilizing anti-scaling and throttling device provided by this utility model, by setting a buffer flow guiding component and a gradual flow stabilizing component, can reduce sudden changes in fluid pressure and flow rate throughout the main body of the throttling device, avoiding CO2 precipitation and CaCO3 scaling caused by sudden drops in fluid pressure, thus inhibiting scaling from the source, thereby significantly reducing the frequency of scaling and maintenance costs, and ensuring continuous production of the geothermal well. Specifically, by setting a buffer flow guiding component inside the inlet end of the throttling device main body, the fluid at the inlet end of the throttling device main body is buffered and guided to prevent drastic pressure changes when the fluid enters the throttling device main body; by setting a gradual flow stabilizing component inside the outlet end of the throttling device main body, the fluid is decelerated, depressurized and turbulent is suppressed, so that the fluid flows out in a stable laminar flow state.

[0016] Furthermore, a buffer plate assembly is placed on the inner wall of the inlet end of the throttling device body, forming a pressure buffer cavity between it and the inner wall of the inlet end of the throttling device body. The hollow cavity structure of the pressure buffer cavity provides initial buffering for the fluid, weakening the impact kinetic energy of the fluid and preventing the fluid from directly impacting the inner wall of the throttling device body, which would cause a sudden increase in local pressure. By setting a guide cone, the fluid is guided to flow evenly along its cone surface, allowing the fluid to smoothly enter the internal flow channel of the throttling device body along a preset trajectory, thereby preventing eddies or sudden changes in local flow velocity.

[0017] Furthermore, by setting a gradually changing flow channel structure, the fluid pressure and velocity can be gradually reduced; at the same time, the flow stabilizing structure can suppress the turbulence of the fluid in the gradually changing flow channel, ensuring that the fluid flows in a stable laminar state.

[0018] Furthermore, by setting an anti-corrosion layer on the inner wall of the throttling device body, it can effectively resist the erosion of geothermal fluids and significantly extend the overall service life of the device.

[0019] Furthermore, by setting annular reinforcing ribs on the outside of the throttling device body, the structural strength of the throttling device body can be effectively improved, thereby enhancing the reliability and stability of the device.

[0020] Furthermore, by setting up three pressure monitoring components and collecting the fluid pressure at preset locations on the main body of the throttling device, a basis for controlling the fluid inflow is provided, ensuring the stable operation of the device. Attached Figure Description

[0021] Figure 1 A three-dimensional structural schematic diagram of the geothermal well pressure stabilizing anti-scaling and throttling device provided for the embodiment; Figure 2 A front view of a geothermal well pressure stabilizing anti-scaling and throttling device provided in an embodiment; Figure 3 A cross-sectional view of a geothermal well pressure stabilizing anti-scaling and throttling device provided in an embodiment; Figure 4 This is a partial structural diagram of the anti-corrosion layer in the embodiment.

[0022] The components include: 1. Throttling device body; 2. Annular reinforcing rib; 3. Inlet connecting flange; 4. Outlet connecting flange; 5. Inlet pipe; 6. Outlet pipe; 7. Cleaning pipe; 8. Removable blind flange; 9. Pressure buffer chamber; 10. Fixing component; 11. Guide cone; 12. Gradual flow channel structure; 13. Flow stabilizing structure; 14. Pressure sensor; 15. Sensor structure; 16. Anti-corrosion layer; and 17. Buffer plate assembly. Detailed Implementation

[0023] To make the technical problem solved by this utility model, the technical solution, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of this utility model. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.

[0024] This utility model provides a pressure-stabilizing anti-scaling and throttling device for geothermal wells, comprising a throttling device body 1, a buffer flow guiding component, and a gradual flow stabilizing component. The throttling device body 1 is a hollow cylindrical structure with openings at both ends. The inlet end of the throttling device body 1 is connected to the outlet pipeline of the geothermal well, and the outlet end of the throttling device body 1 is connected to the geothermal wellhead delivery pipeline. The buffer flow guiding component is disposed inside the inlet end of the throttling device body 1 and is used to buffer and guide the high-temperature, high-pressure fluid entering the throttling device body 1. The gradual flow stabilizing component is disposed inside the outlet end of the throttling device body 1 and is used to ensure that the buffered and guided fluid flows out at the outlet end of the throttling device body 1 in a stable laminar flow state.

[0025] In the above embodiments, by setting a buffer flow guiding component, the fluid at the inlet end is buffered and guided to avoid drastic pressure changes when the fluid enters the main body of the throttling device; by setting a gradual flow stabilizing component, the fluid is decelerated, depressurized and turbulent is suppressed, so that the fluid transitions smoothly at the outlet end; this utility model can reduce sudden changes in fluid pressure and flow rate throughout the process, and now suppresses scale formation from the source, thereby significantly reducing the frequency of scale removal and maintenance costs, and ensuring continuous production of geothermal wells.

[0026] The following specific embodiments further explain the geothermal well pressure stabilizing anti-scaling and throttling device provided by this utility model: Example As attached Figure 1-4 As shown, this embodiment provides a geothermal well pressure stabilizing anti-scaling and throttling device, including a throttling device body 1, annular reinforcing ribs 2, an inlet component, an outlet component, a buffer flow guiding component, a gradual flow stabilizing component, and three pressure monitoring components.

[0027] The main body 1 of the throttling device is a hollow cylindrical structure with openings at both ends. The inlet end of the main body 1 is connected to the outlet pipeline of the geothermal well via the inlet assembly, and the outlet end of the main body 1 is connected to the geothermal wellhead delivery pipeline via the outlet assembly. The annular reinforcing ribs 2 are arranged on the outside of the main body 1 and are distributed sequentially at intervals along the axial direction of the main body 1. The annular reinforcing ribs 2 are welded and fixed to the main body 1. By setting the annular reinforcing ribs 2 on the outside of the main body 1, the structural strength of the main body 1 can be effectively improved, thereby improving the reliability and stability of the device.

[0028] The inner wall of the throttling device body 1 is further provided with an anti-corrosion layer 16. The anti-corrosion layer 16 is directly attached to the inner wall of the throttling device body 1 to effectively resist the erosion of the throttling device body 1 by geothermal fluid, thereby significantly improving the service life of the device. Specifically, the anti-corrosion layer 16 includes an anti-corrosion top layer and an anti-corrosion bottom layer. The anti-corrosion bottom layer is attached to the inner wall surface of the throttling device body 1, and the anti-corrosion top layer covers the surface of the anti-corrosion bottom layer. Preferably, the anti-corrosion bottom layer is made of a nickel-based alloy with a thickness of 0.2 mm. Due to the excellent mechanical strength and basic corrosion resistance of nickel-based alloys, The material is directly attached to the inner wall of the throttling device body 1 to form a first protective barrier on the inner wall surface of the throttling device body 1, resisting the initial erosion of the substrate of the throttling device body 1 by geothermal fluids, and providing stable support for the anti-corrosion surface layer; the anti-corrosion surface layer is made of polytetrafluoroethylene with a thickness of 0.8mm, and takes advantage of the high temperature resistance, strong corrosion resistance and non-stick properties of polytetrafluoroethylene to cover the nickel-based alloy surface layer to form a second protective barrier; by setting a double anti-corrosion layer on the inner wall of the throttling device body 1, the erosion of geothermal fluids can be effectively resisted, and the overall service life of the device can be greatly extended.

[0029] In this embodiment, the inlet assembly is disposed between the inlet end of the throttling device body 1 and the outlet pipeline of the geothermal well, for reliable connection between the throttling device body 1 and the outlet pipeline of the geothermal well; the inlet assembly includes an inlet connecting flange 3 and a water inlet pipe 5, one side of the inlet connecting flange 3 is connected to the inlet end of the throttling device body 1, the other side of the inlet connecting flange 3 is connected to one end of the water inlet pipe 5, and the other end of the water inlet pipe 5 is connected to the outlet pipeline of the geothermal well; wherein, the fluid in the outlet pipeline of the geothermal well can enter the interior of the throttling device body 1 through the water inlet pipe 5.

[0030] In this embodiment, the outlet assembly is disposed between the outlet end of the throttling device body 1 and the geothermal wellhead delivery pipeline for a reliable connection between the throttling device body 1 and the geothermal wellhead delivery pipeline. The outlet assembly includes an outlet connecting flange 4, a water outlet pipe 6, a cleaning pipe 7, and a detachable blind flange 8. One side of the outlet connecting flange 4 is connected to the outlet end of the throttling device body 1, and the other side of the outlet connecting flange 4 is connected to one end of the water outlet pipe 6. The other end of the water outlet pipe 6 is connected to the geothermal wellhead delivery pipeline. Fluid inside the throttling device body 1 can enter the geothermal wellhead delivery pipeline from the water outlet pipe 6. The cleaning pipe 7 is disposed on the side of the water outlet pipe 6 for cleaning the interior of the throttling device body 1. Specifically, the inlet end of the cleaning pipe 7 is connected to the side wall of the water outlet pipe 6, and the detachable blind flange 8 is detachably installed at the outlet end of the cleaning pipe 7.

[0031] In this embodiment, the buffer and flow guiding assembly is disposed inside the inlet end of the throttling device body 1, and is used to buffer and guide the high-temperature and high-pressure fluid entering the throttling device body 1; specifically, the buffer and flow guiding assembly includes a fixing member 10, a flow guiding cone 11 and a buffer plate assembly 17.

[0032] The buffer plate assembly 17 is disposed inside the inlet end of the throttling device body 1; wherein, a pressure buffer cavity 9 is formed between the buffer plate assembly 17 and the inner wall of the inlet end of the throttling device body 1; by providing the pressure buffer cavity 9 at the inlet end of the throttling device body 1, the hollow cavity structure of the flow pressure buffer cavity 9 plays a preliminary buffering role on the fluid, so as to weaken the impact kinetic energy and impact force of the fluid.

[0033] Specifically, the buffer plate assembly 17 includes an annular end plate and a buffer plate body; the annular end plate is coaxially disposed at the inlet end of the throttling device body 1, and the outer circumference of the annular end plate is sealed and fixed to the inlet end of the throttling device body 1, with a central through hole in the center of the annular end plate; the buffer plate body is coaxially disposed at the inlet end of the throttling device body 1 and is placed between the annular end plate and the inner wall of the inlet end of the throttling device body 1; wherein, the annular end plate, the inner wall of the inlet end of the throttling device body 1, and the buffer plate body together form a sealed hollow area, which is the pressure buffer chamber 9; preferably, the buffer plate body adopts a trumpet-shaped structure, with the small end of the buffer plate body connected to the central through hole, and the large end of the buffer plate body connected to the throttling device body 1.

[0034] The guide cone 11 is disposed on the internal central axis of the throttling device body 1 and is located near the inlet end of the throttling device body 1. The guide cone 11 is used to guide the fluid flow. The tip of the guide cone 11 faces the inlet end of the throttling device body 1, and the tail end faces the outlet end of the throttling device body 1. Specifically, the guide cone 11 is connected to the inner wall of the throttling device body 1 via the fixing member 10. One end of the fixing member 10 is fixedly connected to the inner wall of the throttling device body 1, and the other end of the fixing member 10 extends towards the central axis of the throttling device body 1. The guide cone 11 is fixed to the extended end of the fixing member 10. Preferably, the guide cone 11 is located in the middle of the buffer plate body.

[0035] In this embodiment, the gradual flow stabilizing component is disposed inside the outlet end of the throttling device body 1, and is used to allow the fluid that has been buffered and guided to flow out of the outlet end of the throttling device body 1 in a stable laminar flow state; specifically, the gradual flow stabilizing component includes a gradual flow channel structure 12 and a flow stabilizing structure 13.

[0036] The gradient flow channel structure 12 is disposed inside the outlet end of the throttling device body 1. The outer wall of the gradient flow channel structure 12 is connected to the inner wall of the outlet end of the throttling device body 1. A gradient flow channel is disposed at the center of the gradient flow channel structure 12. The central axis of the gradient flow channel coincides with the central axis of the throttling device body 1, and the flow cross-section of the gradient flow channel gradually decreases along the fluid flow direction. Specifically, the gradient flow channel is a gradient flow channel with one end larger than the other. The larger end of the gradient flow channel faces the throttling device body 1. The inlet end of the flow device body 1 is positioned and serves as the inlet of the gradient flow channel structure 12; the small opening end of the gradient flow channel is positioned near the outlet end of the flow device body 1 and serves as the outlet of the gradient flow channel structure 12; preferably, the gradient flow channel structure 12 and the flow device body 1 are an integral structure, that is, the inner wall of the outlet end of the flow device body 1 extends a predetermined distance toward the central axis of the flow device body 1 to form the gradient flow channel structure 12 inside the flow device body 1.

[0037] It is worth noting that the water inlet pipe 5, the central through hole, and the small end of the buffer plate body are coaxially connected in sequence, and the diameter of the water inlet pipe 5, the central through hole, and the small end of the buffer plate body are the same; the diameter of the large end of the buffer plate body is the same as the inner diameter of the throttling device body 1; the diameter of the large end of the gradient flow channel is the same as the inner diameter of the throttling device body 1, and the diameter of the small end of the gradient flow channel is the same as the diameter of the water outlet pipe 6.

[0038] The flow stabilizing structure 13 is disposed at a preset position on the wall of the gradient flow channel. The flow stabilizing structure 13 is used to suppress fluid turbulence. Specifically, the flow stabilizing structure 13 is a circular ring structure. The outer side of the flow stabilizing structure 13 is fixedly connected to the wall of the gradient flow channel, and the inner side of the flow stabilizing structure 13 extends towards the central axis of the gradient flow channel. It should be noted that by setting the flow stabilizing structure 13 on the wall of the gradient flow channel, the fluid in the flow process can be stabilized, reducing fluid turbulence, ensuring stable fluid outflow from the device, and guaranteeing the stability of the throttling effect.

[0039] In this embodiment, three pressure monitoring components are used to collect fluid pressure at preset locations on the main body 1 of the throttling device. The first pressure monitoring component is located in the buffer guide component, the second pressure monitoring component is located in the middle of the gradual flow stabilization component, and the third pressure monitoring component is located in the outlet side region of the gradual flow stabilization component. By setting three pressure monitoring components and collecting fluid pressure at preset locations on the main body 1 of the throttling device, full coverage of pressure monitoring is achieved, avoiding the problem of existing devices lacking pressure monitoring and thus failing to grasp the fluid status in a timely manner.

[0040] Specifically, the first pressure monitoring component is disposed inside the pressure buffer chamber 9; the gradient flow channel structure 12 has two mounting slots inside; the first mounting slot is located in the middle section of the gradient flow channel structure 12, and the second mounting slot is located in the outlet section of the gradient flow channel structure 12; the second pressure monitoring component is disposed in the first mounting slot, and the third pressure monitoring component is disposed in the second mounting slot; each pressure monitoring component includes a pressure sensor 14 and a sensor interface 15, the pressure sensor 14 is a pressure sensor with high temperature resistance, the pressure sensor 14 is electrically connected to the sensor interface 15, and the connection section of the sensor interface 15 extends to the outside of the throttling device body 1.

[0041] It should be noted that the pressure sensor 14 located in the pressure buffer chamber 9 is used to monitor the initial fluid pressure at the inlet end of the throttling device body 1; the pressure sensor 14 located in the middle section of the gradient flow channel structure 12 is used to monitor the fluid flow pressure in the middle section of the throttling device body 1; and the pressure sensor 14 located in the outlet section of the gradient flow channel structure 12 is used to monitor the fluid flow pressure at the outlet end of the throttling device body 1. Before use, ensure that the data transmission of the three pressure monitoring components is stable and the values ​​are accurate, and ensure that the pressure monitoring error is within ±0.15MPa.

[0042] Working principle and usage: The geothermal well pressure stabilizing anti-scaling throttling device described in this embodiment seals the inlet end of the throttling device body 1 with the geothermal well outlet pipeline via the inlet connecting flange 3, and seals the outlet end of the throttling device body 1 with the geothermal wellhead delivery pipeline via the outlet connecting flange 4, ensuring no leakage at the flange connection surface. Simultaneously, it ensures that the inlet pipe 5 is connected to the branch interface of the geothermal well outlet pipeline, and that the outlet pipe 6 is aligned with the branch interface of the geothermal wellhead delivery pipeline. Furthermore, it ensures that the removable blind flange 8 at the bottom of the cleaning pipe 7 is in a completely closed and sealed state. The sensor interfaces 15 of the three pressure monitoring components are respectively connected to a preset external data acquisition system.

[0043] When the high-temperature, high-pressure fluid from the geothermal well enters the device through the well outlet pipe, it first flows through the pressure buffer chamber 9 via the inlet pipe 5. The spatial structure within the pressure buffer chamber 9 provides initial buffering for the fluid, reducing its impact kinetic energy and preventing direct impact on the inner wall of the throttling device body 1, which could lead to a sudden increase in local pressure. Simultaneously, the guide cone 11, fixed by the fixing component 10, guides the fluid to flow evenly along the cone surface, ensuring that the fluid smoothly enters the internal flow channel of the throttling device body 1 along a preset trajectory, preventing eddies or sudden changes in local velocity. Then, after passing through the buffered and guided... Fluid enters the gradual flow channel structure 12 located at the outlet end of the throttling device body 1. As the fluid passes through the gradual flow channel structure 12, the fluid pressure and velocity gradually decrease. The flow stabilizing structure 13 on the inner wall of the gradual flow channel structure 12 further suppresses fluid turbulence, ensuring that the fluid flows in a stable laminar flow state. In addition, the monitoring data of the three pressure monitors are viewed in real time through an external data acquisition system. If the pressure at the inlet end is too high, the inlet flow can be reduced by adjusting the valve on the outlet pipeline of the geothermal well. If the pressure in the middle section or outlet section is abnormal, the valve on the delivery pipeline of the geothermal wellhead is adjusted.

[0044] When the device stops transporting geothermal fluid after the preset operating time, close the inlet pipe 5 and outlet pipe 6, open the detachable blind flange 8 at the end of the cleaning pipe 7, and use the nozzle of the high-pressure cleaning pump to clean the inside of the device through the cleaning pipe 7. After cleaning, turn off the high-pressure cleaning pump, reinstall the detachable blind flange 8, open the valves of the inlet pipe 5 and outlet pipe 6, and start the device to resume normal operation.

[0045] It should be noted that the components in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The electrical components involved in this utility model should be electrically connected in the order of operation of each electrical component as described above. The detailed connection methods are well known in the art.

[0046] The geothermal well pressure stabilizing anti-scaling and throttling device of this utility model has annular reinforcing ribs 2 welded to the outside of the throttling device body 1, and an inlet component and an outlet component fixedly connected to the end of the throttling device body 1; a buffer flow guiding component is provided at one end of the throttling device body 1, and a gradual flow stabilizing component is provided at the other end; the pressure buffer chamber 9 and the flow guiding cone 11 in the buffer flow guiding component buffer and guide the fluid at the inlet end to prevent drastic pressure changes when the fluid enters the device; the gradual flow channel structure 12 and the flow stabilizing structure 13 in the gradual flow stabilizing component make the fluid transition smoothly at the outlet end; this utility model can reduce sudden changes in pressure and flow rate throughout the process, reduce scale formation from the source, reduce the frequency of scale removal and maintenance costs, and ensure continuous production; secondly, by providing a double-layer anti-corrosion layer 16 on the inner wall of the throttling device body 1, it can effectively resist the erosion of geothermal fluids and significantly extend the overall service life of the device.

[0047] The above embodiments are merely one of the implementation methods to achieve the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model.

Claims

1. A pressure-stabilizing anti-scaling and throttling device for geothermal wells, characterized in that, It includes the main body of the throttling device (1), the buffer flow guiding component and the gradual flow stabilizing component; The main body (1) of the throttling device is a hollow cylindrical structure with openings at both ends; wherein, the inlet end of the main body (1) of the throttling device is used to connect to the liquid outlet pipeline of the geothermal well, and the outlet end of the main body (1) of the throttling device is used to connect to the delivery pipeline of the geothermal wellhead. The buffer and flow guiding assembly is disposed inside the inlet end of the throttling device body (1) and is used to buffer and guide the high-temperature and high-pressure fluid entering the throttling device body (1); The gradual flow stabilizing component is disposed inside the outlet end of the throttling device body (1) to allow the buffered and guided fluid to flow out in a stable laminar flow state at the outlet end of the throttling device body (1).

2. The geothermal well pressure stabilizing anti-scaling and throttling device according to claim 1, characterized in that, The buffer guide assembly includes a guide cone (11) and a buffer plate assembly (17). The buffer plate assembly (17) is disposed inside the inlet end of the throttling device body (1); wherein, a pressure buffer cavity (9) is formed between the buffer plate assembly (17) and the inner wall of the inlet end of the throttling device body (1). The guide cone (11) is disposed on the internal central axis of the throttling device body (1) and is disposed near the inlet end of the throttling device body (1); wherein the tip of the guide cone (11) is disposed towards the inlet end of the throttling device body (1).

3. The geothermal well pressure stabilizing anti-scaling and throttling device according to claim 1, characterized in that, The gradual flow stabilization component includes a gradual flow channel structure (12) and a flow stabilization structure (13). The gradient flow channel structure (12) is disposed inside the outlet end of the main body (1) of the throttling device; The outer wall of the gradient flow channel structure (12) is connected to the inner wall of the outlet end of the throttling device body (1). A gradient flow channel is provided in the center of the gradient flow channel structure (12). The central axis of the gradient flow channel coincides with the central axis of the throttling device body (1), and the flow cross section of the gradient flow channel gradually decreases along the fluid flow direction. The flow stabilizing structure (13) is set at a preset position on the wall of the gradient flow channel, and the flow stabilizing structure (13) is used to suppress fluid turbulence.

4. A geothermal well pressure stabilizing anti-scaling and throttling device according to claim 3, characterized in that, The flow stabilizing structure (13) is a circular ring structure; the outer side of the flow stabilizing structure (13) is fixedly connected to the wall of the gradient flow channel, and the inner side of the flow stabilizing structure (13) extends toward the central axis of the gradient flow channel.

5. A geothermal well pressure stabilizing anti-scaling and throttling device according to claim 1, characterized in that, The inner wall of the main body (1) of the throttling device is provided with an anti-corrosion layer (16).

6. A geothermal well pressure stabilizing anti-scaling and throttling device according to claim 5, characterized in that, The anti-corrosion layer (16) includes an anti-corrosion surface layer and an anti-corrosion base layer. The anti-corrosion base layer is attached to the inner wall surface of the throttling device body (1), and the anti-corrosion surface layer covers the surface of the anti-corrosion base layer.

7. A geothermal well pressure stabilizing anti-scaling and throttling device according to claim 1, characterized in that, It also includes annular reinforcing ribs (2); the annular reinforcing ribs (2) are disposed on the outside of the throttling device body (1) and are distributed sequentially at intervals along the axial direction of the throttling device body (1).

8. A geothermal well pressure stabilizing anti-scaling and throttling device according to claim 1, characterized in that, This also includes imported components and exported components; The inlet component is located between the inlet end of the throttling device body (1) and the outlet pipeline of the geothermal well, and the outlet component is located between the outlet end of the throttling device body (1) and the geothermal wellhead delivery pipeline.

9. A geothermal well pressure stabilizing anti-scaling and throttling device according to claim 8, characterized in that, The imported components include an inlet connection flange (3) and an inlet pipe (5); One side of the inlet connecting flange (3) is connected to the inlet end of the throttling device body (1), the other side of the inlet connecting flange (3) is connected to one end of the water inlet pipe (5), and the other end of the water inlet pipe (5) is connected to the liquid outlet pipe of the geothermal well. The outlet assembly includes an outlet connection flange (4), a water outlet pipe (6), a cleaning pipe (7), and a removable blind flange (8). One side of the outlet connecting flange (4) is connected to the outlet end of the throttling device body (1), the other side of the outlet connecting flange (4) is connected to one end of the water outlet pipe (6), and the other end of the water outlet pipe (6) is connected to the geothermal wellhead conveying pipeline. The inlet end of the cleaning pipe (7) is connected to the side wall of the outlet pipe (6), and the detachable blind plate (8) is detachably installed at the outlet end of the cleaning pipe (7).

10. A geothermal well pressure stabilizing anti-scaling and throttling device according to claim 1, characterized in that, It also includes three pressure monitoring components; the three pressure monitoring components are used to collect the fluid pressure at a preset location on the main body (1) of the throttling device; The first pressure monitoring component is located in the buffer flow guiding component, the second pressure monitoring component is located in the middle part of the gradual flow stabilizing component, and the third pressure monitoring component is located in the outlet side area of ​​the gradual flow stabilizing component.

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