Efficient cooling and heat exchange structure for steam turbine stator of power plant

Abstract

The invention provides a power plant steam turbine stator efficient cooling heat exchange structure, which comprises a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism, a cooling water circulation mechanism and a cooling water circulation mechanism, and is characterized in that the cooling water circulation mechanism comprises a water inlet pipe, a water outlet pipe and a cooling water circulation mechanism; a water outlet of the heat absorption assembly is connected with a water inlet of the heat dissipation assembly through a water outlet pipe; the cooling unit comprises a fan assembly and a spraying assembly, the fan assembly is arranged to be capable of blowing air to the heat dissipation assembly so as to cool the cooling water passing through the heat dissipation assembly, and the spraying assembly is arranged to be capable of spraying water mist to the heat dissipation assembly so as to cool the cooling water through water mist evaporation. According to the efficient cooling and heat exchange structure for the steam turbine stator of the power plant, air cooling and spray evaporation cooling are combined, the cooling speed and efficiency of the heat dissipation assembly can be remarkably improved, and the temperature of cooling water returning to the interior of a steam turbine is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of power plant steam turbine cooling technology, and more specifically, to a high-efficiency cooling heat exchange structure for power plant steam turbine stators. Background Technology

[0002] Steam turbine generators generate a lot of heat during operation, which can affect the normal operation of the unit and even cause the unit to disconnect and cause accidents. Therefore, each steam turbine generator is equipped with a cooling and heat exchange structure to absorb heat from the stator and ensure the normal operation of the unit.

[0003] Currently, most existing steam turbine cooling heat exchange structures use water circulation cooling. During the cooling process, circulating water absorbs heat from the stator and carries it away to the outside, where it is then cooled by air. Simultaneously, the cooled water re-enters the turbine to absorb heat from the stator, and this cycle repeats. However, in this method, the heated water circulating to the outside of the turbine dissipates heat slowly and efficiently. Furthermore, some heat remains in the cooling water after heat exchange, which, when re-circulated into the turbine, affects the heat absorption effect on the stator, further reducing the turbine's heat exchange efficiency. Summary of the Invention

[0004] This application provides at least one efficient cooling and heat exchange structure for a power plant turbine stator. By combining air cooling with spray evaporative cooling, the cooling speed and efficiency of the heat dissipation components can be significantly improved, effectively reducing the temperature of the cooling water returning to the turbine.

[0005] This application provides an embodiment of a high-efficiency cooling heat exchange structure for a power plant steam turbine stator, including: The cooling water circulation mechanism includes an inlet pipe, an outlet pipe, a heat absorption component, and a heat dissipation component. The heat absorption component is located inside the steam turbine, and the heat dissipation component is located outside the steam turbine. The inlet of the heat absorption component and the outlet of the heat dissipation component are connected through the inlet pipe. A circulation pump is installed on the inlet pipe. The outlet of the heat absorption component and the inlet of the heat dissipation component are connected through the outlet pipe. During the cooling water circulation process, the cooling water absorbs heat from the stator of the steam turbine through the heat absorption component, and the cooled water that has absorbed heat dissipates heat and cools down through the heat dissipation component. The cooling unit includes a fan assembly and a spray assembly, the fan assembly and the spray assembly being disposed facing the heat dissipation assembly. The fan assembly is configured to cool the cooling water passing through the heat dissipation assembly by blowing air onto the heat dissipation assembly, and the spray assembly is configured to spray water mist onto the heat dissipation assembly to cool the cooling water by evaporation of the water mist.

[0006] In one optional embodiment, the heat absorption assembly includes multiple heat absorption tubes arranged around the stator, and the heat absorption tubes are connected in series or in parallel through connecting pipes to form a heat absorption channel for cooling water in the steam turbine.

[0007] In one optional embodiment, the surface of the heat-absorbing tube is fixedly connected with heat-absorbing fins for increasing the contact area with the stator.

[0008] In one optional embodiment, the heat dissipation assembly includes a mounting bracket, and a heat dissipation pipe for cooling water to flow through is disposed within the mounting bracket. The heat dissipation pipe has a coiled or spiral structure.

[0009] In one alternative embodiment, the fan assembly includes a drive motor and fan blades driven by the drive motor, the fan blades being positioned opposite the heat dissipation assembly.

[0010] In one optional embodiment, the cooling unit further includes an airflow guiding mechanism, which includes multiple reciprocating guide plates disposed on the side of the heat dissipation component away from the fan blades, for uniformly guiding the heat dissipation component to different directions.

[0011] In one optional embodiment, the airflow guiding mechanism further includes a transmission mechanism that converts the rotational motion of the drive motor into the reciprocating oscillation of the guide plate.

[0012] In one optional embodiment, the transmission mechanism includes a synchronous pulley, a drive shaft, and a crank-connecting rod mechanism that converts the rotational motion of the drive shaft into linear reciprocating motion, the linear reciprocating motion being used to drive the guide vane to oscillate.

[0013] In one optional embodiment, the spray assembly includes a branch pipe connected to the water inlet pipe, a main pipe connected to the branch pipe and positioned opposite the heat dissipation assembly, and a plurality of atomizing nozzles connected to the main pipe. Cooling water is drawn from the water inlet pipe by the branch pipe and sprayed out through the atomizing nozzles.

[0014] In an optional embodiment, the system further includes a main frame mechanism, which includes a positioning ring and a support frame. The positioning ring is sleeved on the steam turbine. The sidewall of the positioning ring is provided with a first connector and a second connector for connecting the heat absorption component to the water inlet pipe and the water outlet pipe. The support frame is connected to the positioning ring through a support plate. The heat dissipation component and the cooling unit are both disposed on the support frame.

[0015] The above-mentioned technical solution of this application has the following beneficial technical effects: The high-efficiency cooling and heat exchange structure for the power plant turbine stator in this application combines air cooling with spray evaporative cooling, which significantly improves the cooling speed and efficiency of the heat dissipation components. This allows for a more effective reduction in the temperature of the cooling water returning to the turbine, ensuring that it has a stronger heat absorption capacity and improving the overall cooling and heat exchange efficiency and operational stability of the turbine generator.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This application illustrates a usage scenario of a high-efficiency cooling and heat exchange structure for a power plant turbine stator provided in an embodiment of this application. Figure 2 It shows Figure 1 A schematic diagram of the high-efficiency cooling heat exchange structure of the steam turbine stator in a power plant. Figure 3 It shows Figure 1 A schematic diagram of the airflow guiding mechanism in the diagram; Figure 4 It shows Figure 3 A magnified view of part A in the image; In the diagram: 1. Steam turbine; 100. Inlet pipe; 101. Circulating pump; 200. Outlet pipe; 300. Heat absorption assembly; 301. Heat absorption pipe; 302. Heat absorption fins; 400. Heat dissipation assembly; 401. Mounting bracket; 402. Heat dissipation pipe; 500. Fan assembly; 501. Drive motor; 502. Fan blade; 600. Spray assembly; 601. Branch pipe; 602. Main pipe; 603. Atomizing nozzle; 700. Airflow guiding mechanism; 701. Guide plate; 702. Synchronous pulley; 703. Drive shaft; 704. Drive disc; 705. Push rod; 706. Adapter shaft; 707. Hinge plate; 708. Push plate; 800. Positioning ring; 801. First connector; 802. Second connector; 900. Support frame; 901. Support plate. Detailed Implementation

[0019] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this application.

[0020] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] refer to Figures 1 to 4This application provides a high-efficiency cooling heat exchange structure for a power plant steam turbine stator, including a cooling water circulation mechanism and a cooling unit. The cooling water circulation mechanism includes an inlet pipe 100, an outlet pipe 200, a heat absorption component 300, and a heat dissipation component 400. The heat absorption component 300 is disposed inside the steam turbine 1, and the heat dissipation component 400 is disposed outside the steam turbine 1. The inlet of the heat absorption component 300 and the outlet of the heat dissipation component 400 are connected through the inlet pipe 100. A circulation pump 101 is installed on the inlet pipe 100. The outlet of the heat absorption component 300 and the inlet of the heat dissipation component 400 are connected through the outlet pipe 200. Connected, during the cooling water circulation process, the cooling water absorbs heat from the stator of the steam turbine 1 through the heat absorption component 300, and the heat-absorbing cooling water is cooled down by the heat dissipation component 400; the cooling unit includes a fan assembly 500 and a spray assembly 600, which are arranged facing the heat dissipation component 400. The fan assembly 500 is configured to cool the cooling water passing through the heat dissipation component 400 by blowing air onto the heat dissipation component 400, and the spray assembly 600 is configured to spray water mist onto the heat dissipation component 400 to cool the cooling water by the evaporation of the water mist. During operation, driven by the circulating pump 101, cooling water flows from the inlet pipe 100 into the heat absorption component 300 inside the turbine 1, absorbs heat from the stator, and becomes hot water. It then flows through the outlet pipe 200 to the heat dissipation component 400 outside the turbine 1. Simultaneously, the fan assembly 500 blows air onto the heat dissipation component 400, and the spray assembly 600 sprays water mist onto it, jointly cooling the hot water. The cooled water then returns to the heat absorption component 300, forming a closed-loop cycle. This scheme, by combining air cooling with spray evaporative cooling, significantly improves the cooling speed and efficiency of the heat dissipation component 400, thereby more effectively reducing the temperature of the cooling water returning to the turbine 1, ensuring its stronger heat absorption capacity, and overall improving the cooling heat exchange efficiency and operational stability of the turbine generator.

[0025] It should be noted that, compared to using the fan assembly or spray unit 600 alone, combining the spray unit 600 with the fan assembly 500 can accelerate the evaporation rate of the spray by using the air blown out by the fan assembly 500, thereby accelerating the cooling efficiency and ensuring the working temperature of the cooling water.

[0026] Optionally, the heat absorption assembly 300 includes multiple heat absorption tubes 301 arranged around the stator. These tubes are connected in series or parallel via connecting pipes to form heat absorption channels for the cooling water within the turbine 1. During operation, the cooling water directly and fully exchanges heat with the stator surface or nearby areas through these channels formed by the series- or parallel-connected heat absorption tubes 301. The multi-tube surround layout increases the contact area between the cooling water and the stator and the heat exchange time, ensuring rapid and uniform heat absorption and improving the efficiency and reliability of the heat absorption process.

[0027] Optionally, heat-absorbing fins 302 are fixedly connected to the surface of the heat-absorbing tube 301 to increase the contact area with the stator. The heat-absorbing fins 302 significantly increase the effective heat exchange area of ​​the heat-absorbing assembly 300, enhancing the heat transfer process from the stator to the cooling water, making heat absorption faster and more thorough, and further improving the heat absorption performance at the front end of the cooling system. In this embodiment, the heat-absorbing fins 302 are annular and arranged around the stator. Furthermore, there can be multiple heat-absorbing fins 302.

[0028] Optionally, the heat dissipation assembly 400 includes a mounting bracket 401, within which a heat dissipation pipe 402 for cooling water to flow through is disposed. The heat dissipation pipe 402 has a coiled or spiral structure. During operation, hot water flowing from the turbine 1 meanders within the heat dissipation pipe 402, and its heat is transferred through the pipe wall to the air or spray water within the mounting bracket 401. The coiled or spiral pipe design extends the flow path and time of the hot water in the heat dissipation area, increases the heat dissipation area, and provides more sufficient heat exchange conditions for air cooling and evaporative cooling, thereby improving heat dissipation efficiency.

[0029] Optionally, the fan assembly 500 includes a drive motor 501 and fan blades 502 driven by the drive motor 501, with the fan blades 502 positioned directly opposite the heat dissipation assembly 400. During operation, the drive motor 501 drives the fan blades 502 to rotate, generating a forced airflow that blows directly onto the heat dissipation assembly 400 (such as the heat sink 402). This direct-blowing design generates a concentrated and powerful airflow, effectively dispersing the hot air on the surface of the heat dissipation assembly 400, accelerating convective heat transfer, and achieving rapid air cooling.

[0030] Optionally, the cooling unit further includes an airflow guiding mechanism 700, which includes multiple reciprocatingly swinging guide plates 701 disposed on the side of the heat dissipation assembly 400 opposite to the fan blades 502, for uniformly guiding the heat dissipation assembly 400 in different directions. During use, the air blown out by the fan blades 502 passes through the heat dissipation assembly 400 and is uniformly guided in different directions by these guide plates 701. By uniformly guiding the airflow carrying heat in different directions through the swinging guide plates 701, the heat-carrying airflow is diffused, avoiding the local accumulation of hot air and the formation of a heat island effect, promoting the overall circulation of ambient air and the uniform dissipation of heat, and improving the heat dissipation efficiency and uniformity. In this embodiment, the guide plates 701 are rotatably connected to the support frame 900.

[0031] Optionally, the airflow guiding mechanism 700 further includes a transmission mechanism that converts the rotational motion of the drive motor 501 into the reciprocating oscillation of the guide plate 701. During use, the output power of the drive motor 501 can be transmitted to the airflow guiding mechanism 700 through this transmission mechanism, ultimately driving the guide plate 701 to perform regular reciprocating oscillations. This eliminates the need for an additional independent drive device; the automatic oscillation of the guide plate 701 can be achieved using the existing fan motor power, simplifying the structure, reducing energy consumption and cost, and improving system integration and economy. In this embodiment, the drive motor 501 is a dual-shaft motor, with its first output shaft connected to the fan blade 502 and its second output shaft connected to the airflow guiding mechanism 700 via the transmission mechanism.

[0032] Optionally, the transmission mechanism includes a synchronous pulley 702, a drive shaft 703, and a crank-connecting rod mechanism that converts the rotational motion of the drive shaft 703 into linear reciprocating motion, which drives the guide vanes 701 to oscillate. In configuration, the drive shaft 703 is rotatably mounted on the support frame 900. One end of the drive shaft 703 is connected to the drive shaft 703 of the drive motor 501 via the synchronous pulley 702, and the other end is connected to multiple guide vanes 701 via the crank-connecting rod mechanism. During use, the motor power is transmitted through the synchronous pulley 702 and the drive shaft 703, and the rotational motion is converted into linear reciprocating motion via the crank-connecting rod or cam mechanism, thereby driving the guide vanes 701 to oscillate. This mechanical transmission method is structurally stable and reliable, with high conversion efficiency, and can precisely control the oscillation frequency and amplitude of the guide vanes 701, ensuring a continuous and controllable airflow guiding effect. In this embodiment, the crank-connecting rod mechanism includes a drive disc 704, a push rod 705, a transition shaft 706, a hinge plate 707, and a push plate 708. The drive disc 704 is located at the end of the drive shaft 703 away from the synchronous pulley 702. One end of the push rod 705 is hinged to the drive disc 704, and the other end of the push rod 705 is fixedly connected to one end of the transition shaft 706. The other end of the transition shaft 706 is fixedly connected to the hinge plate 707, which is hinged to the push plate 708. The push plate 708 is rotatably connected to multiple guide plates 701. In use, the drive disc 704 rotates under the drive of the drive shaft 703, and simultaneously drives the multiple guide plates 701 to swing through the push rod 705, the transition shaft 706, the hinge plate 707, and the push plate 708.

[0033] Optionally, the spray assembly 600 includes a branch pipe 601 connected to the inlet pipe 100, a main pipe 602 connected to the branch pipe 601 and positioned opposite the heat dissipation assembly 400, and multiple atomizing nozzles 603 connected to the main pipe 602. Cooling water is drawn from the inlet pipe 100 through the branch pipe 601 and the main pipe 602 and sprayed out through the atomizing nozzles 603. During operation, a portion of the cooling water is diverted from the inlet pipe 100 and transported to the atomizing nozzles 603 via the branch pipes 601 and the main pipe 602, where it is atomized and sprayed onto the surface of the heat dissipation assembly 400. This design directly utilizes the cooling water within the system for spraying, requiring only the replenishment of cooling water without relying on an external water source. This method of using circulating water for spraying avoids potential water quality issues introduced by external water sources, reducing operating and maintenance costs.

[0034] Optionally, the system also includes a main frame mechanism, comprising a positioning ring 800 and a support frame 900. The positioning ring 800 is fitted onto the steam turbine 1. The sidewall of the positioning ring 800 is provided with a first connector 801 and a second connector 802 for connecting the heat absorption assembly 300 to the inlet pipe 100 and outlet pipe 200. The first connector 801 and the second connector 802 are located on opposite sides of the positioning ring 800. The support frame 900 is connected to the positioning ring 800 via a support plate 901. The heat dissipation assembly 400 and the cooling unit are both mounted on the support frame 900. During use, the positioning ring 800 is fitted onto the steam turbine 1 to connect and fix the inlet and outlet pipes 200 of the heat absorption assembly 300; the support frame 900 is connected to the positioning ring 800 via the support plate 901 and provides an installation base for the external heat dissipation assembly 400 and the cooling unit (fan, spray). The main frame structure achieves a stable connection and overall support between the internal and external parts of the cooling system, ensuring the rigidity and stability of the system structure, facilitating installation and maintenance, and making the connection between the internal and external cooling structures of the turbine reliable and the layout compact.

[0035] Optionally, the support frame 900 is formed by four side plates, the support frame 900 has a cavity, the heat dissipation assembly 400 is disposed in the cavity, and the guide plate 701 and the fan assembly 500 are respectively located at two openings of the cavity.

[0036] The high-efficiency cooling and heat exchange structure for the power plant turbine stator in this embodiment combines air cooling with spray evaporative cooling, significantly improving the cooling speed and efficiency of the heat dissipation component 400. This more effectively reduces the temperature of the cooling water returning to the turbine 1, ensuring stronger heat absorption capacity and improving the overall cooling and heat exchange efficiency and operational stability of the turbine generator. Furthermore, the airflow guiding mechanism 700 directs the heat dissipated from the heat dissipation pipe 402 in different directions, preventing the accumulation of hot air and the formation of a heat island effect. This promotes overall airflow and uniform heat dissipation, improving heat dissipation efficiency and uniformity.

[0037] One or more embodiments in this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this specification should be included within the protection scope of this application.

[0038] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high-efficiency cooling and heat exchange structure for a power plant steam turbine stator, characterized in that, include: The cooling water circulation mechanism includes an inlet pipe, an outlet pipe, a heat absorption component, and a heat dissipation component. The heat absorption component is located inside the steam turbine, and the heat dissipation component is located outside the steam turbine. The inlet of the heat absorption component and the outlet of the heat dissipation component are connected through the inlet pipe. A circulation pump is installed on the inlet pipe. The outlet of the heat absorption component and the inlet of the heat dissipation component are connected through the outlet pipe. During the cooling water circulation process, the cooling water absorbs heat from the stator of the steam turbine through the heat absorption component, and the cooled water that has absorbed heat dissipates heat and cools down through the heat dissipation component. The cooling unit includes a fan assembly and a spray assembly, the fan assembly and the spray assembly being disposed facing the heat dissipation assembly. The fan assembly is configured to cool the cooling water passing through the heat dissipation assembly by blowing air onto the heat dissipation assembly, and the spray assembly is configured to spray water mist onto the heat dissipation assembly to cool the cooling water by evaporation of the water mist.

2. The high-efficiency cooling and heat exchange structure for power plant turbine stators according to claim 1, characterized in that, The heat absorption assembly includes multiple heat absorption tubes arranged around the stator. The heat absorption tubes are connected in series or in parallel through connecting pipes to form a heat absorption channel for cooling water in the steam turbine.

3. The high-efficiency cooling and heat exchange structure for power plant turbine stators according to claim 2, characterized in that, The surface of the heat-absorbing tube is fixedly connected with heat-absorbing fins to increase the contact area with the stator.

4. The high-efficiency cooling and heat exchange structure for power plant turbine stators according to claim 1, characterized in that, The heat dissipation assembly includes a mounting frame, and a heat dissipation pipe for cooling water to flow through is provided inside the mounting frame. The heat dissipation pipe has a coiled or spiral structure.

5. The high-efficiency cooling and heat exchange structure for power plant turbine stators according to claim 1, characterized in that, The fan assembly includes a drive motor and fan blades driven by the drive motor, the fan blades being positioned opposite the heat dissipation assembly.

6. The high-efficiency cooling and heat exchange structure for power plant turbine stators according to claim 5, characterized in that, The cooling unit also includes an airflow guiding mechanism, which includes multiple reciprocating guide plates disposed on the side of the heat dissipation component away from the fan blades, for uniformly guiding the heat dissipation component to different directions.

7. The high-efficiency cooling and heat exchange structure for power plant turbine stators according to claim 6, characterized in that, The airflow guiding mechanism also includes a transmission mechanism that converts the rotational motion of the drive motor into the reciprocating oscillation of the guide plate.

8. The high-efficiency cooling and heat exchange structure for power plant turbine stators according to claim 7, characterized in that, The transmission mechanism includes a synchronous pulley, a drive shaft, and a crank-connecting rod mechanism that converts the rotational motion of the drive shaft into linear reciprocating motion, the linear reciprocating motion being used to drive the guide plate to swing.

9. The high-efficiency cooling and heat exchange structure for a power plant turbine stator according to claim 1, characterized in that, The spray assembly includes a branch pipe connected to the water inlet pipe, a main pipe connected to the branch pipe and positioned opposite the heat dissipation assembly, and a plurality of atomizing nozzles connected to the main pipe. Cooling water is drawn from the water inlet pipe by the branch pipe and sprayed out through the atomizing nozzles.

10. The high-efficiency cooling and heat exchange structure for a power plant turbine stator according to claim 1, characterized in that, It also includes a main frame mechanism, which includes a positioning ring and a support frame. The positioning ring is sleeved on the steam turbine. The side wall of the positioning ring is provided with a first connector and a second connector for connecting the heat absorption component to the water inlet pipe and the water outlet pipe. The support frame is connected to the positioning ring through a support plate. The heat dissipation component and the cooling unit are both disposed on the support frame.

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