A structure for improving efficiency in a steam turbine

Abstract

The utility model provides a kind of structure for improving the efficiency in steam turbine. The structure for improving the efficiency in steam turbine includes: installation chassis;High-pressure drive structure, the high-pressure drive structure is installed in the position of installation chassis top near one side, the position of installation chassis top near middle is equipped with medium-pressure drive structure, the top of installation chassis is equipped with low-pressure drive structure, the high-pressure drive structure and medium-pressure drive structure are equipped with acceleration component before, the top of medium-pressure drive structure is equipped with booster assembly, the import of booster assembly is equipped with an injection pipe with suction hood, the outlet of booster assembly is equipped with booster pipe. The structure for improving the efficiency in steam turbine provided by the utility model can twice speed up the steam discharged from low-pressure drive structure with exhaust equipment, further improve the internal efficiency of steam turbine, and the internal efficiency of steam turbine is increased by the design through the way of multistage increasing flow rate.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine technology, and in particular to a structure for improving the internal efficiency of a steam turbine. Background Technology

[0002] Steam turbines are the core power equipment in thermal power, nuclear power, and other power plants. They are mainly composed of physical structures such as stators, rotors, blades, and bearings. They receive high-temperature and high-pressure steam generated by boilers, and use the steam to drive the rotor to rotate by impacting the blades, converting the steam thermal energy into mechanical energy, which in turn drives the generator to generate electricity. This equipment is a key link in energy conversion and has the characteristics of stable operation and high efficiency, supporting the continuous power supply of the power system.

[0003] Steam turbine thermal efficiency is a core indicator for measuring how well a steam turbine converts steam thermal energy into mechanical energy. It refers to the ratio of the effective output mechanical energy to the total input steam thermal energy. This efficiency is affected by factors such as steam parameters, steam turbine structural design, insulation and sealing performance, and operating conditions. It is directly related to the energy utilization level of the power generation system. Improving thermal efficiency can reduce energy consumption and emissions, and is a key direction for energy-saving optimization in thermal power and other energy projects.

[0004] The thermal efficiency of a steam turbine is related to the conversion rate of high-temperature and high-pressure steam entering the turbine. After entering the turbine, the high-temperature and high-pressure steam passes through the high and medium pressure zones before entering the low-pressure drive zone, resulting in significant energy consumption and reduced turbine efficiency.

[0005] Therefore, it is necessary to provide a structure that improves the efficiency of a steam turbine to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a structure to improve the internal efficiency of a steam turbine, solving the problem that the thermal efficiency of a steam turbine is related to the high energy consumption and reduced internal efficiency of steam after passing through high and medium pressure zones.

[0007] To solve the above-mentioned technical problems, the structure for improving the internal efficiency of a steam turbine provided by this utility model includes: a mounting base;

[0008] A high-pressure drive structure is installed on the top of a mounting base near one side. A medium-pressure drive structure is installed on the top of the mounting base near the middle. A low-pressure drive structure is installed on the top of the mounting base. An acceleration component is installed between the high-pressure and medium-pressure drive structures. A booster component is installed on the top of the medium-pressure drive structure. An injection pipe with a suction hood is installed at the inlet of the booster component. A booster pipe is installed at the outlet of the booster component. Two connecting pipes are installed at the other end of the booster pipe through a first tee. An injection hood is installed at the other end of the two connecting pipes. An inlet pipe is installed at the inlet of the high-pressure drive structure.

[0009] The bracket is installed on the back of the mounting base, and an exhaust device is installed on the top of the bracket. The inlet of the exhaust device is connected to two connectors through a return assembly, and the other end of each connector is connected to a return pipe.

[0010] The two injection hoods are connected to the outlet of the low-pressure drive structure. The high-pressure drive structure, the medium-pressure drive structure, and the low-pressure drive structure include a housing, an impeller, a shaft, and auxiliary structures. The other side of the low-pressure drive structure is connected to the generator through a bearing. The high-pressure drive structure, the medium-pressure drive structure, and the low-pressure drive structure constitute the drive body of the steam turbine.

[0011] Preferably, a control box with a door is installed on the top of the mounting base, and an operation panel is installed on one side of the control box;

[0012] The control panel allows users to set equipment operating parameters. The door is equipped with a lock, and the control box contains power switches and controllers for auxiliary equipment operation.

[0013] Preferably, the mounting base includes a base plate, a mounting structure, and an adjustment structure, wherein the mounting structure is used to mount the adjustment structure to the bottom of the base plate;

[0014] The threaded connection between the adjustment structure and the installation structure can be used to adjust the stability of the base plate as needed.

[0015] Preferably, the acceleration assembly includes a collection shroud, an acceleration tube, and a connecting shroud. The collection shroud is installed at the outlet of the high-pressure drive structure, the connecting shroud is installed at the inlet of the medium-pressure drive structure, and the two ends of the acceleration tube are connected to the collection shroud and the connecting shroud.

[0016] Preferably, the pressurization assembly includes a protective shell and a high-temperature pressurization component, wherein the high-temperature pressurization component is installed inside the protective shell;

[0017] If necessary, the outer surface of the protective shell can be provided with heat dissipation holes, and the inlet and outlet of the high-temperature pressurization component are connected to the injection pipe and the pressurization pipe, respectively.

[0018] Preferably, the pressurization pipe includes an insulation pipe, a heating pipe, and an inner pipe, with the heating pipe located between the insulation pipe and the inner pipe;

[0019] The heating element is hollow inside, and it is connected to the connecting assembly, with the connection points being interconnected.

[0020] Preferably, two connecting components are installed on the outer surface of the booster pipe. The connecting components include an installation pipe and a connector. The installation pipe is used to install the connector on the outer surface of the booster pipe.

[0021] Compared with related technologies, the structure for improving the efficiency of a steam turbine provided by this utility model has the following beneficial effects:

[0022] This invention provides a structure for improving the internal efficiency of a steam turbine. To enhance the internal efficiency, an acceleration component is installed between the high-pressure drive structure and the intermediate-pressure drive structure to increase the flow rate of high-temperature, high-pressure steam. Simultaneously, a pressurization component is installed directly between the intermediate-pressure drive structure and the low-pressure drive structure to re-pressurize the steam flowing out of the intermediate-pressure drive structure and inject it into the low-pressure drive structure, thereby improving the internal efficiency of the steam turbine. Furthermore, in conjunction with an exhaust system, the steam discharged from the low-pressure drive structure can be re-accelerated, further improving the internal efficiency of the steam turbine. This design increases the internal efficiency of the steam turbine through a multi-stage increase in flow rate. Attached Figure Description

[0023] Figure 1 A schematic diagram of the first embodiment of the structure for improving the internal efficiency of a steam turbine provided by this utility model;

[0024] Figure 2 A structural diagram illustrating the installation structure of this utility model is provided.

[0025] Figure 3 Provided for this utility model Figure 1 An enlarged view of point A shown;

[0026] Figure 4 A structural schematic diagram of the high-temperature booster component is provided for this utility model;

[0027] Figure 5 A schematic diagram of the second embodiment of the structure for improving the internal efficiency of a steam turbine provided by this utility model;

[0028] Figure 6 A schematic diagram of the inner tube is provided for this utility model.

[0029] The diagram is labeled as follows: 1. Mounting base frame; 101. Base plate; 102. Mounting structure; 103. Adjustment structure; 2. Acceleration component; 201. Collection cover; 202. Acceleration pipe; 203. Connecting cover; 3. Control box; 4. Box door; 5. Operation panel; 6. High-pressure drive structure; 7. Steam inlet pipe; 8. Medium-pressure drive structure; 9. Pressure boosting component; 901. Protective shell; 902. High-temperature pressure boosting component; 10. Suction cover; 11. Injection pipe; 12. Pressure boosting pipe; 121. Insulation pipe; 122. Heating pipe; 123. Inner pipe; 13. First tee; 14. Connecting pipe; 15. Injection cover; 16. Low-pressure drive structure; 17. Bracket; 18. Exhaust equipment; 19. Connector; 20. Return pipe; 21. Return structure; 22. Connecting component; 221. Mounting pipe; 222. Connector. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] First Embodiment

[0032] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic diagram of the first embodiment of the structure for improving the internal efficiency of a steam turbine provided by this utility model; Figure 2 A structural diagram illustrating the installation structure of this utility model is provided. Figure 3 Provided for this utility model Figure 1 An enlarged view of point A shown; Figure 4 A schematic diagram of the high-temperature booster component provided for this utility model. The structure for improving the efficiency within the steam turbine includes: a mounting base 1;

[0033] A high-pressure drive structure 6 is installed on the top of the mounting base 1 near one side. A medium-pressure drive structure 8 is installed on the top of the mounting base 1 near the middle. A low-pressure drive structure 16 is installed on the top of the mounting base 1. An acceleration component 2 is installed between the high-pressure drive structure 6 and the medium-pressure drive structure 8. A booster component 9 is installed on the top of the medium-pressure drive structure 8. An injection pipe 11 with a suction hood 10 is installed at the inlet of the booster component 9. A booster pipe 12 is installed at the outlet of the booster component 9. Two connecting pipes 14 are installed at the other end of the booster pipe 12 through a first tee head 13. An injection hood 15 is installed at the other end of the two connecting pipes 14. A steam inlet pipe 7 is installed at the inlet of the high-pressure drive structure 6.

[0034] The bracket 17 is installed on the back of the mounting base 1. An exhaust device 18 is installed on the top of the bracket 17. The inlet of the exhaust device 18 is connected to two connectors 19 through the return assembly 21. The other end of each connector 19 is connected to a return pipe 20.

[0035] Two injection hoods 15 are connected to the outlet of the low-pressure drive structure 16. The high-pressure drive structure 6, the medium-pressure drive structure 8, and the low-pressure drive structure 16 include a housing, impeller, shaft, and auxiliary structure. The other side of the low-pressure drive structure 16 is connected to the generator through a bearing. The high-pressure drive structure 6, the medium-pressure drive structure 8, and the low-pressure drive structure 16 constitute the drive body of the steam turbine. The suction hood 10 is installed on the top of the medium-pressure drive structure 8. The exhaust equipment 18 and the booster assembly 9 are both transported by high-temperature pumps. The other end of the return pipe 20 is connected to the steam outlet of the low-pressure drive structure 16. The outlet of the exhaust equipment 18 is connected to the heating equipment through a pipe.

[0036] Please refer to Figure 1A control box 3 with a door 4 is installed on the top of the mounting base 1, and an operation panel 5 is installed on one side of the control box 3;

[0037] The operation panel 5 allows setting equipment operating parameters, the door 4 is equipped with a lock, and the control box 3 contains a power switch and a controller for the operation of auxiliary equipment.

[0038] Please refer to Figure 1 and Figure 2 The mounting base 1 includes a base plate 101, a mounting structure 102, and an adjustment structure 103. The mounting structure 102 is used to mount the adjustment structure 103 to the bottom of the base plate 101.

[0039] The threaded connection between the adjustment structure 103 and the mounting structure 102 can adjust the stability of the base plate 101 as needed.

[0040] Please refer to Figure 1 and Figure 3 The acceleration component 2 includes a collection cover 201, an acceleration tube 202, and a connecting cover 203. The collection cover 201 is installed at the outlet of the high-pressure drive structure 6, the connecting cover 203 is installed at the inlet of the medium-pressure drive structure 8, and the two ends of the acceleration tube 202 are connected to the collection cover 201 and the connecting cover 203.

[0041] The smaller diameter of the accelerator tube 202 can increase the flow rate.

[0042] Please refer to Figure 1 and Figure 4 The pressurization assembly 9 includes a protective shell 901 and a high-temperature pressurization component 902, wherein the high-temperature pressurization component 902 is installed inside the protective shell 901;

[0043] If necessary, the outer surface of the protective shell 901 may be provided with heat dissipation holes. The inlet and outlet of the high-temperature pressurization component 902 are connected to the injection pipe 11 and the pressurization pipe 12, respectively.

[0044] The working principle of the structure for improving the internal efficiency of a steam turbine provided by this utility model is as follows:

[0045] Installing an acceleration component 2 between the high-pressure drive structure 6 and the intermediate-pressure drive structure 8 can increase the flow rate of high-temperature and high-pressure steam. At the same time, installing a booster component 9 directly between the intermediate-pressure drive structure 6 and the low-pressure drive structure 16 can re-pressurize the steam flowing out of the intermediate-pressure drive structure 6 and inject it into the low-pressure drive structure 16, thereby improving the internal efficiency of the turbine. In conjunction with the exhaust device 18, the steam discharged from the low-pressure drive structure 16 can be re-accelerated, further improving the internal efficiency of the turbine. During operation, the high-temperature and high-pressure steam passes through the high-pressure drive structure 6 and is accelerated by the acceleration component 2 before entering the intermediate-pressure drive structure 8. During this process, the booster component 9 and the exhaust device 18 work together to accelerate and pressurize the steam, thereby increasing the steam pressure entering the low-pressure drive structure 16 and improving the internal efficiency.

[0046] Compared with related technologies, the structure for improving the efficiency of a steam turbine provided by this utility model has the following beneficial effects:

[0047] To improve the internal efficiency of the steam turbine, an acceleration component 2 is installed between the high-pressure drive structure 6 and the intermediate-pressure drive structure 8 to increase the flow rate of high-temperature and high-pressure steam. At the same time, a booster component 9 is directly installed between the intermediate-pressure drive structure 6 and the low-pressure drive structure 16 to re-pressurize the steam flowing out of the intermediate-pressure drive structure 6 and inject it into the low-pressure drive structure 16, thereby improving the internal efficiency of the steam turbine. In addition, with the help of the exhaust device 18, the steam discharged from the low-pressure drive structure 16 can be re-accelerated, further improving the internal efficiency of the steam turbine. This design increases the internal efficiency of the steam turbine by increasing the flow rate in multiple stages.

[0048] Second Embodiment

[0049] Please refer to the following: Figures 5-6 , Figure 5 A schematic diagram of the second embodiment of the structure for improving the internal efficiency of a steam turbine provided by this utility model; Figure 6 This utility model provides a schematic diagram of the inner tube structure. Based on the structure for improving the internal efficiency of a steam turbine provided in the first embodiment of this application, the second embodiment of this application proposes another structure for improving the internal efficiency of a steam turbine. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0050] Specifically, the difference in the structure for improving turbine efficiency provided in the second embodiment of this application is as follows, please refer to... Figure 5 and Figure 6 The pressurization pipe 12 includes an insulation pipe 121, a heating pipe 122 and an inner pipe 123, wherein the heating pipe 122 is located between the insulation pipe 121 and the inner pipe 123;

[0051] The interior of the heating tube 122 is hollow. The heating tube 122 is connected to the connecting assembly 22, and the connection is open.

[0052] Please refer to Figure 5 and Figure 6 Two connecting components 22 are installed on the outer surface of the booster pipe 12. The connecting component 22 includes a mounting pipe 221 and a connector 222. The mounting pipe 221 is used to install the connector 222 on the outer surface of the booster pipe 12.

[0053] The connecting component 22 facilitates connection with pipes, allowing for the injection and discharge of high-temperature liquids or gases.

[0054] Compared with related technologies, the structure for improving the efficiency of a steam turbine provided by this utility model has the following beneficial effects:

[0055] To maintain the high temperature of steam, the booster pipe 12 is divided into an inner pipe 123, a heating pipe 122, and an insulation pipe 121. High-temperature liquid or steam is injected into the heating pipe 122 through the connecting component 22 to provide heating and insulation for the inner pipe 123. In conjunction with the insulation pipe 121, the temperature is locked in, reducing temperature loss, which is beneficial to improving the efficiency of the steam turbine.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A structure for improving the efficiency of a steam turbine, characterized in that, include: Install the base frame; A high-pressure drive structure is installed on the top of a mounting base near one side. A medium-pressure drive structure is installed on the top of the mounting base near the middle. A low-pressure drive structure is installed on the top of the mounting base. An acceleration component is installed between the high-pressure and medium-pressure drive structures. A booster component is installed on the top of the medium-pressure drive structure. An injection pipe with a suction hood is installed at the inlet of the booster component. A booster pipe is installed at the outlet of the booster component. Two connecting pipes are installed at the other end of the booster pipe through a first tee. An injection hood is installed at the other end of the two connecting pipes. An inlet pipe is installed at the inlet of the high-pressure drive structure. The bracket is installed on the back of the mounting base. An exhaust device is installed on the top of the bracket. The inlet of the exhaust device is connected to two connectors through a return assembly. The other end of each connector is connected to a return pipe.

2. The structure for improving the efficiency of a steam turbine according to claim 1, characterized in that, A control box with a door is mounted on the top of the mounting base, and an operation panel is mounted on one side of the control box.

3. The structure for improving the efficiency of a steam turbine according to claim 1, characterized in that, The mounting base includes a base plate, a mounting structure, and an adjustment structure. The mounting structure is used to mount the adjustment structure to the bottom of the base plate.

4. The structure for improving the efficiency of a steam turbine according to claim 1, characterized in that, The acceleration assembly includes a collection shroud, an acceleration tube, and a connecting shroud. The collection shroud is installed at the outlet of the high-pressure drive structure, the connecting shroud is installed at the inlet of the medium-pressure drive structure, and the two ends of the acceleration tube are connected to the collection shroud and the connecting shroud.

5. The structure for improving the efficiency of a steam turbine according to claim 1, characterized in that, The booster assembly includes a protective shell and a high-temperature booster component, which is installed inside the protective shell.

6. The structure for improving the efficiency of a steam turbine according to claim 1, characterized in that, The pressurization pipe includes an insulation pipe, a heating pipe, and an inner pipe, with the heating pipe located between the insulation pipe and the inner pipe.

7. The structure for improving the efficiency of a steam turbine according to claim 1, characterized in that, Two connecting components are installed on the outer surface of the booster tube. Each connecting component includes a mounting tube and a connector. The mounting tube is used to install the connector on the outer surface of the booster tube.

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