Steam turbine speed regulator

Abstract

The utility model relates to the technical field of speed regulators, and discloses a steam turbine speed regulator which comprises a steam inlet, the left side of the steam inlet is fixedly communicated with a steam guide pipe, a plurality of speed regulation pipes are installed on the upper side and the lower side of the left portion of the outer wall of the steam guide pipe, and a plurality of sliding strips are fixedly connected to the inner walls of the speed regulation pipes. A pressure disc is slidably connected to the outer wall of the sliding strip, a plurality of sliding grooves are formed in the edge of the outer wall of the pressure disc, a plurality of steam holes are formed in the left side of the pressure disc, and a conical head is fixedly connected to the right side of each steam hole. The steam holes in the pressure disc enable steam to enter the steam guide pipe and the steam inlet, when the steam pressure changes, the spring is assembled to push the pressure disc and the conical head to move in the steam guide pipe, the steam inlet amount is adjusted, the rotating speed of the steam turbine is maintained to be stable, and the structure ensures that equipment stably operates under different steam pressures by adjusting the steam amount; the speed regulation stability is improved, the equipment operation quality is ensured, and the use requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of speed governor technology, and in particular to a steam turbine speed governor. Background Technology

[0002] As a key component of the power grid, the performance of the turbine governor directly affects the stability and safety of the power supply. With the increasing prominence of energy shortages, improving energy efficiency has become a top priority. Optimizing and improving the turbine governor is of great significance for improving turbine operating efficiency and reducing energy waste. By automatically adjusting the steam intake of the turbine according to load changes, it achieves precise control of the turbine speed, thereby maintaining the stability of the power frequency. At the same time, it can also improve the turbine's operating characteristics, enhance its economy, and has overspeed protection and undervoltage protection functions, thus building a solid defense for the safe operation of the equipment.

[0003] When a steam turbine is running stably, its speed can fluctuate periodically and irregularly, severely affecting the stability of the power grid. Even with conventional valves controlling steam flow and adapting to different pressures, the turbine speed remains unstable, resulting in poor performance. Existing equipment addresses these issues by upgrading control sensors and employing advanced control algorithms and optimization techniques to improve the governor's response speed and stability, ensuring precise control of the turbine's operating status. However, this approach has drawbacks. Upgrading the control structure is costly, requires highly skilled technicians, and often fails to achieve the desired results in practical applications. Furthermore, subsequent maintenance is complex; improper maintenance, environmental factors, and manufacturing quality issues can lead to a decline in governor performance, increasing unnecessary costs and reducing overall effectiveness. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a turbine speed governor, which aims to improve the problems of the existing technology where the structure is too complex, increasing the purchase and maintenance costs, and the complex structure makes operation difficult and reduces the effectiveness of use.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a steam turbine governor, including a steam inlet, a steam guide pipe fixedly connected to the left side of the steam inlet, multiple speed regulating pipes installed on the upper and lower sides of the left side of the outer wall of the steam guide pipe, multiple sliding strips fixedly connected to the inner wall of each speed regulating pipe, a pressure plate slidably connected to the outer wall of each sliding strip, multiple sliding grooves opened at the edge of the outer wall of the pressure plate, multiple steam holes opened on the left side of each pressure plate, a conical head fixedly connected to the right side of each steam hole, a spring fixedly connected to the right side of the pressure plate, and a disassembly and assembly mechanism provided on the left side of the speed regulating pipe, the disassembly and assembly mechanism being used for quick disassembly and assembly and sealing of the structure.

[0006] As a further description of the above technical solution:

[0007] The disassembly and assembly mechanism includes a sealing strip, the bottom end of which is fixedly connected to the top of the bottom speed regulating tube. Multiple sealing grooves are provided on the front and rear sides of the bottom of the top speed regulating tube. Multiple connecting pieces are fixedly connected to the front and rear sides of the outer wall of the speed regulating tube. Bolts are threaded to the top of the connecting pieces. An extrusion strip is fixedly connected to the left side of the inner wall of the speed regulating tube. A steam pipe is installed on the outer wall of the extrusion strip. An extrusion groove is provided on the right side of the outer wall of the steam pipe.

[0008] As a further description of the above technical solution:

[0009] A high-pressure cylinder is fixedly connected to the right side of the steam inlet, and an intermediate-pressure cylinder is fixedly connected to the right side of the high-pressure cylinder.

[0010] As a further description of the above technical solution:

[0011] The inner wall of each high-pressure cylinder is provided with multiple wheel grooves, and a steam turbine is installed on the inner wall of each wheel groove.

[0012] As a further description of the above technical solution:

[0013] The inner wall of the intermediate pressure cylinder is provided with multiple wheel grooves, and a steam turbine is fixedly connected to the inner wall of each wheel groove.

[0014] As a further description of the above technical solution:

[0015] A rotating shaft is provided on the left side of the turbine, and a coupling is provided on the right side of the turbine.

[0016] As a further description of the above technical solution:

[0017] A second rotating shaft is provided on the right side of the second turbine, and multiple structural holes are provided on the inner wall edge of the high-pressure cylinder.

[0018] As a further description of the above technical solution:

[0019] The coupling has a screw threaded on the left side, and a nut threaded on the right side of the screw's outer wall.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, steam is introduced through the steam inlet and the steam guide pipe. The sliding strip on the inner wall of the speed regulating pipe allows the pressure plate to slide on its inner wall. The steam holes on the pressure plate allow steam to enter the steam guide pipe and the steam inlet. When the steam pressure changes, a spring is installed to push the pressure plate and the conical head to move in the steam guide pipe, thereby adjusting the amount of steam entering and maintaining the stable speed of the steam turbine. This structure ensures stable operation of the equipment under different steam pressures by adjusting the amount of steam, improves the stability of speed regulation, ensures the quality of equipment operation, and meets the usage requirements.

[0022] 2. In this utility model, a sealing strip and a sealing groove are provided so that the speed regulator is fixed to the speed regulating pipe on the connecting plate by bolts during installation. The extrusion strip on the speed regulating pipe cooperates with the extrusion groove of the steam pipe to ensure the stability and sealing of the connection. This structure simplifies the installation process, improves the convenience of maintenance and repair, enhances the sealing and stability of steam transmission, and meets the disassembly and assembly requirements. Attached Figure Description

[0023] Figure 1 This is a perspective view of the front side of the high-pressure cylinder of a steam turbine speed governor proposed in this utility model;

[0024] Figure 2 This is a partial structural exploded view of the speed control tube of a steam turbine speed governor proposed in this utility model;

[0025] Figure 3 This is a partial structural diagram of the pressure plate of a steam turbine governor proposed in this utility model;

[0026] Figure 4 This is a partial structural diagram of the speed control tube of a steam turbine speed governor proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of a partial structure of a turbine in a turbine governor proposed in this utility model.

[0028] Legend:

[0029] 1. Steam inlet; 2. Disassembly and assembly mechanism; 201. Sealing strip; 202. Sealing groove; 203. Connecting piece; 204. Bolt; 205. Extrusion strip; 206. Steam pipe; 207. Extrusion groove; 3. Steam guide pipe; 4. Speed ​​regulating pipe; 5. Sliding strip; 6. Pressure plate; 7. Sliding groove; 8. Steam hole; 9. Conical head; 10. Spring; 11. High-pressure cylinder; 12. Medium-pressure cylinder; 13. Wheel groove one; 14. Steam turbine one; 15. Wheel groove two; 16. Steam turbine two; 17. Shaft one; 18. Shaft two; 19. Structural hole; 20. Coupling; 21. Screw; 22. Nut. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see the appendix Figure 1 Appendix Figure 2 and attached Figure 3 An embodiment of this utility model provides a steam turbine speed governor, including a steam inlet 1, a steam guide pipe 3 fixedly connected to the left side of the steam inlet 1, multiple speed regulating pipes 4 installed on the upper and lower sides of the left side of the outer wall of the steam guide pipe 3, multiple sliding strips 5 fixedly connected to the inner wall of each speed regulating pipe 4, a pressure plate 6 slidably connected to the outer wall of each sliding strip 5, multiple sliding grooves 7 opened at the edge of the outer wall of each pressure plate 6, multiple steam holes 8 opened on the left side of each pressure plate 6, a conical head 9 fixedly connected to the right side of each steam hole 8, a spring 10 fixedly connected to the right side of the pressure plate 6, and a disassembly and assembly mechanism 2 provided on the left side of the speed regulating pipe 4, which is used for quick disassembly and assembly and sealing of the structure;

[0032] Specifically, the steam inlet 1 is connected to the steam guide pipe 3, ensuring smooth steam transmission. These speed regulating pipes 4 are easy to install and remove and have good sealing performance. The pressure plate 6 can move according to the steam pressure through the slide bar 5. These slide grooves 7 cooperate with the slide bar 5 to slide stably. These steam holes 8 allow steam to pass through and enter the right side of the pressure plate 6. The conical head 9 helps to guide and regulate the flow of steam. The function of the spring 10 is to provide the necessary rebound force for the pressure plate 6 to keep it in the proper position. The disassembly and assembly mechanism 2 is used to quickly and easily disassemble and install the speed regulating pipes 4, while ensuring the sealing performance of the entire structure, thereby ensuring the stable operation of the equipment and the efficient utilization of steam.

[0033] Please see the appendix Figure 2 Appendix Figure 3 and attached Figure 4 The disassembly and assembly mechanism 2 includes a sealing strip 201. The bottom end of the sealing strip 201 is fixedly connected to the top of the bottom speed regulating pipe 4. Multiple sealing grooves 202 are provided on the front and rear sides of the bottom of the top speed regulating pipe 4. Multiple connecting pieces 203 are fixedly connected on the front and rear sides of the outer wall of the speed regulating pipe 4. Bolts 204 are threadedly connected to the top of the connecting pieces 203. An extrusion strip 205 is fixedly connected to the left side of the inner wall of the speed regulating pipe 4. A steam pipe 206 is installed on the outer wall of the extrusion strip 205. An extrusion groove 207 is provided on the right side of the outer wall of the steam pipe 206.

[0034] Specifically, the sealing strip 201 is tightly integrated with the speed regulating pipe 4 to further enhance the sealing effect. These sealing grooves 202 can effectively prevent gas leakage. These connecting pieces 203 not only provide additional structural strength, but also have bolts 204 installed on their tops via threaded connections, making the disassembly and assembly of the entire mechanism more convenient and secure. The extrusion strip 205 is designed to achieve a more convenient installation effect and sealing performance. The steam pipe 206 has an extrusion groove 207, which can work with the extrusion strip 205 to complete the sealing installation.

[0035] Please see the appendix Figure 1 and attached Figure 5 A high-pressure cylinder 11 is fixedly connected to the right side of the steam inlet 1, and a medium-pressure cylinder 12 is fixedly connected to the right side of the high-pressure cylinder 11. Multiple wheel grooves 13 are opened on the inner wall of the high-pressure cylinder 11, and a steam turbine 14 is installed on the inner wall of the wheel groove 13. Multiple wheel grooves 15 are opened on the inner wall of the medium-pressure cylinder 12, and a steam turbine 16 is fixedly connected to the inner wall of the wheel groove 15.

[0036] Specifically, the steam inlet 1, serving as the initial channel for steam to enter the turbine, is made of alloy steel that is resistant to high temperature, high pressure, and corrosion. The high-pressure cylinder 11 is the component for the initial conversion of steam energy, and the intermediate-pressure cylinder 12 is the component for the further conversion of steam energy, ensuring the stable operation of the structure. The first groove 13 is used to install the turbine 14. Steam impacts the blades of the turbine 14, causing the turbine 14 to drive the shaft to rotate at high speed, realizing the initial conversion of steam thermal energy into mechanical energy. The second groove 15 is used to install the second turbine 16, allowing the steam, whose pressure and temperature have decreased after passing through the high-pressure cylinder 11, to continue to expand and do work in the second groove 15, driving the second turbine 16 to rotate, further converting the steam energy into mechanical energy, and providing power output for the stable operation of the turbine.

[0037] Please see the appendix Figure 5 A rotating shaft 17 is provided on the left side of turbine 14, a coupling 20 is provided on the right side of turbine 14, a rotating shaft 28 is provided on the right side of turbine 26, and multiple structural holes 19 are provided on the inner wall edge of high pressure cylinder 11. A screw 21 is threaded on the left side of coupling 20, and a nut 22 is threaded on the right side of the outer wall of screw 21.

[0038] Specifically, shaft 17 ensures that turbine 14 can rotate stably. Coupling 20 is responsible for transmitting power from turbine 14 to other mechanical components. Turbine 26 is equipped with shaft 28 to ensure the accuracy and efficiency of its rotation. These structural holes 19 not only help with the heat dissipation of high-pressure cylinder 11, but also can be used for the installation and disassembly of the cylinder body. Coupling 20 is connected to screw 21 by thread and works with nut 22 to ensure a firm connection between the two shafts, thereby ensuring the stable operation of the entire structure.

[0039] Working principle: Steam is introduced through the steam inlet 1 and the steam pipe 3. The inner wall of the speed regulating pipe 4 on the steam pipe 3 is fixedly connected to the slide bar 5, so that the pressure plate 6 with the sliding groove 7 can slide on the inner wall of the speed regulating pipe 4. Since the pressure plate 6 has a steam hole 8, when steam enters, it will pass through the steam hole 8 and enter the steam inlet 1 from the steam pipe 3. When the steam pressure changes, the pressure plate 6 with the spring 10 will be pushed, so that the conical head 9 moves on the inner wall of the steam pipe 3, thereby changing the amount of steam entering and ensuring that the turbine speed is stable within a threshold. This structure can change the amount of steam entering in combination with the steam pressure value under different steam pressure conditions, stabilize the equipment within a safe threshold, improve the stability of speed regulation, ensure the quality of equipment operation, and meet the usage requirements.

[0040] The sealing strip 201 allows the governor to be inserted into the inner wall of the sealing groove 202 for positioning and sealing during installation. Tightening the bolt 204 allows the connecting piece 203 to drive the speed control pipe 4 together. A compression strip 205 is also fixedly connected to the speed control pipe 4, allowing it to be inserted into the compression groove 207 on the steam pipe 206 when the structure is connected to it. This compression method ensures the stability and sealing of the connection. This structure allows for simple and quick installation, improves the ease of disassembly and assembly, facilitates maintenance and repair, and enhances the sealing and stability of steam transmission, meeting the requirements for disassembly and assembly.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steam turbine governor, comprising a steam inlet (1), characterized in that: A steam guide pipe (3) is fixedly connected to the left side of the steam inlet (1). Multiple speed regulating pipes (4) are installed on the upper and lower sides of the left side of the outer wall of the steam guide pipe (3). Multiple slide bars (5) are fixedly connected to the inner wall of the speed regulating pipe (4). A pressure plate (6) is slidably connected to the outer wall of the slide bar (5). Multiple sliding grooves (7) are opened at the edge of the outer wall of the pressure plate (6). Multiple steam holes (8) are opened on the left side of the pressure plate (6). A conical head (9) is fixedly connected to the right side of the steam hole (8). A spring (10) is fixedly connected to the right side of the pressure plate (6). A disassembly and assembly mechanism (2) is provided on the left side of the speed regulating pipe (4). The disassembly and assembly mechanism (2) is used for quick disassembly and assembly and sealing of the structure.

2. A turbine speed governor according to claim 1, characterized in that: The disassembly and assembly mechanism (2) includes a sealing strip (201). The bottom end of the sealing strip (201) is fixedly connected to the top of the bottom speed regulating pipe (4). Multiple sealing grooves (202) are provided on the front and rear sides of the bottom of the top speed regulating pipe (4). Multiple connecting pieces (203) are fixedly connected to the front and rear sides of the outer wall of the speed regulating pipe (4). Bolts (204) are threadedly connected to the top of the connecting pieces (203). An extrusion strip (205) is fixedly connected to the left side of the inner wall of the speed regulating pipe (4). A steam pipe (206) is installed on the outer wall of the extrusion strip (205). An extrusion groove (207) is provided on the right side of the outer wall of the steam pipe (206).

3. A turbine speed governor according to claim 1, characterized in that: A high-pressure cylinder (11) is fixedly connected to the right side of the steam inlet (1), and a medium-pressure cylinder (12) is fixedly connected to the right side of the high-pressure cylinder (11).

4. A turbine speed governor according to claim 3, characterized in that: The inner wall of the high-pressure cylinder (11) is provided with multiple wheel grooves (13), and a steam turbine (14) is installed on the inner wall of the wheel groove (13).

5. A turbine speed governor according to claim 3, characterized in that: The inner wall of the intermediate pressure cylinder (12) is provided with multiple wheel grooves (15), and the inner wall of the wheel grooves (15) is fixedly connected to the turbine (16).

6. A turbine speed governor according to claim 4, characterized in that: A rotating shaft (17) is provided on the left side of the turbine (14), and a coupling (20) is provided on the right side of the turbine (14).

7. A turbine speed governor according to claim 5, characterized in that: The right side of the turbine (16) is provided with a rotating shaft (18), and multiple structural holes (19) are provided at the inner wall edge of the high-pressure cylinder (11).

8. A turbine speed governor according to claim 6, characterized in that: The left side of the coupling (20) is threaded with a screw (21), and the right side of the outer wall of the screw (21) is threaded with a nut (22).

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