Large-volume flow rotating partition plate mechanism and steam regulating valve

Abstract

The invention discloses a large-volume flow rotating partition plate mechanism and a steam regulating valve, and belongs to the technical field of steam turbines. The large-volume flow rotating partition plate mechanism comprises a partition plate, a plurality of first through holes and a partition plate rotating shaft, a through shaft hole is formed in the rotating plate, the rotating plate is rotationally connected with the partition plate rotating shaft through the through shaft hole, a plurality of windows are formed in the rotating plate, the windows can be divided into three groups according to the size of the cross sectional area, and the three groups of windows are sequentially arranged from large to small according to the cross sectional area. One group of windows with larger cross sectional areas are communicated with the corresponding first through holes, and then one group of windows with medium cross sectional areas are communicated with the corresponding first through holes until each window is communicated with the corresponding first through hole. According to the large-volume flow rotating partition plate mechanism, the function of adjusting the steam inlet degree of a part is guaranteed, steam can be distributed and utilized more finely, and therefore the utilization efficiency of the steam and the internal efficiency of a steam turbine are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbines, and in particular to a large-volume flow rotary diaphragm mechanism and a steam regulating valve. Background Art

[0002] The rotating diaphragm mechanism, a key actuator of the steam regulating valve within a steam turbine, precisely regulates the turbine's steam extraction capacity. Operating in this manner, the mechanism effectively controls the window area of ​​the rotating diaphragm mechanism by lifting and lowering the rotating plate, thereby regulating steam flow. During this process, excess steam is directed through the extraction pipe to other uses, effectively utilizing steam resources.

[0003] In the practical application of existing rotary baffle mechanism technology, its main applicable operating conditions are extraction pressures in the range of 0.5-1.0 MPa(a) and extraction temperatures maintained in the range of 200-300°C. Under such operating conditions, steam exhibits a high density and correspondingly has a small volume flow rate. This characteristic makes the technology relatively undemanding on the structural dimensions of the rotary baffle mechanism, and the windows of the internal rotating plates are of equal size. When regulating steam inlet, each window of the rotary baffle mechanism is opened or closed synchronously through the pulling action of the execution structure, making it impossible to more finely distribute and utilize steam according to actual needs during the steam utilization process, making it difficult to achieve a high level of steam utilization efficiency. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problems in the prior art and provide a large volume flow rotary baffle mechanism that can distribute and utilize steam more finely, thereby improving the steam utilization efficiency and the efficiency of the turbine.

[0005] The present invention provides a large volume flow rotating baffle mechanism, comprising: A partition plate is provided with a plurality of first through holes, a partition plate rotating shaft is provided on the partition plate, and the plurality of first through holes are distributed along the circumference of the partition plate rotating shaft; A rotating plate is fitted with the partition, and a through-axis hole is provided on the rotating plate. The rotating plate is rotatably connected to the partition shaft through the through-axis hole. A plurality of windows are provided on the rotating plate, and the plurality of windows are distributed along the circumference of the partition shaft. The plurality of windows can be divided into three groups according to the size of the cross-sectional area. The three groups of windows are arranged in order from large to small according to the cross-sectional area. Each window corresponds to a first through hole with the same structure as the first through hole. When the rotating plate rotates, a group of windows with the largest cross-sectional area is first connected to the corresponding first through hole, and then a group of windows with a medium cross-sectional area is connected to the corresponding first through hole, until each window is connected to the corresponding first through hole.

[0006] Preferably, the sum of the cross-sectional areas of the multiple windows is A, the sum of the cross-sectional areas of a group of windows with the largest cross-sectional area is A1, the sum of the cross-sectional areas of a group of windows with medium cross-sectional area is A2, and the sum of the cross-sectional areas of a group of windows with the smallest cross-sectional area is A3, wherein A1=50%A, A2=28.5%A, and A3=21.5%A.

[0007] Preferably, the number of the group of windows with the largest cross-sectional area is 7, the number of the group of windows with the medium cross-sectional area is 4, and the number of the group of windows with the smallest cross-sectional area is 3.

[0008] Preferably, the partition is provided with a plurality of guide grooves, which are arranged along the circumference of the partition shaft. The rotating plate is provided with a plurality of positioning pins, and each positioning pin is slidably connected to a guide groove.

[0009] Preferably, the plurality of guide grooves are designed in a stepped manner, the groove depths of the plurality of guide grooves are different, and each group of windows corresponds to a guide groove with a different groove depth.

[0010] Preferably, the cross sections of the first through hole and the window are both fan-shaped.

[0011] A steam regulating valve includes a large-volume flow rotating diaphragm mechanism and a servo drive system. The servo drive system includes: an oil hydraulic press and a valve regulating connecting rod mechanism. The oil hydraulic press is connected to the valve regulating connecting rod mechanism, and the valve regulating connecting rod mechanism is connected to the rotating plate. The oil hydraulic press drives the rotating plate to rotate through the valve regulating connecting rod mechanism.

[0012] Preferably, the valve regulating connecting rod mechanism includes: the valve regulating connecting rod mechanism includes a bracket, a driving rod, a pry rod, a first connecting rod and a second connecting rod, the middle part of the driving rod and the middle part of the pry rod are both rotatably connected to the bracket, one end of the driving rod is connected to the hydraulic press, the other end of the driving rod is connected to the first connecting rod, the top end of the first connecting rod is connected to one end of the pry rod, the bottom end of the first connecting rod is hinged to one side of the rotating plate, the top end of the second connecting rod is connected to the other end of the pry rod, and the bottom end of the second connecting rod is hinged to the other side of the rotating plate.

[0013] Preferably, an angle sensor is provided on the partition shaft, and the angle sensor is used to monitor the real-time rotation angle of the rotating plate. The angle sensor is electrically connected to a controller, and the controller is electrically connected to the hydraulic press. A predetermined rotation angle is preset in the controller, and the controller compares the predetermined rotation angle with the real-time rotation angle, thereby controlling the action of the hydraulic press so that the real-time rotation angle of the rotating plate is the same as the predetermined rotation angle.

[0014] Preferably, a pressure sensor is provided in the steam extraction pipe of the steam turbine, and the pressure sensor is used to monitor the real-time air pressure value in the steam extraction pipe. The pressure sensor is electrically connected to the controller, and the air pressure threshold is preset in the controller. The controller controls the action of the hydraulic press according to the real-time air pressure value and the air pressure threshold to drive the rotating plate to rotate, thereby adjusting the real-time air pressure value in the steam extraction pipe so that the real-time air pressure value is equal to the air pressure threshold.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: by using windows of different sizes, that is, the windows with the smallest cross-sectional area are the first group, the windows with medium cross-sectional area are the second group, and the windows with the largest cross-sectional area are the third group, according to different working scenarios, by rotating the partition, the windows of different sizes are connected in sequence, thereby realizing the control of the order in which steam passes through the windows. This structure ensures the function of adjusting part of the steam inlet degree, so that the steam can be distributed and utilized more finely, thereby improving the steam utilization efficiency and the internal efficiency of the steam turbine. And by adjusting the steam flow in stages through the "large → medium → small" window sequence, it is possible to avoid sudden changes in steam flow rate, reduce turbulence and pressure loss, ensure the stable increase of steam linear velocity, improve the impulse turning capacity, and improve the internal efficiency.

[0016] The steam regulating valve of the present invention utilizes an oil hydraulic press to drive a driving rod to rotate, and under the lever action of the driving rod, the first connecting rod is driven to move. While driving the rotating plate to rotate, the first connecting rod drives the second connecting rod to move in the opposite direction through the pry bar. Since the first connecting rod and the second connecting rod are hinged on both sides of the rotating plate, the rotating plate can be driven stably by the force applied on both sides of the first connecting rod and the second connecting rod, thereby ensuring the smoothness of the air intake adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the rotating partition mechanism of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the rotating partition mechanism of the present invention; Figure 3 This is a structural schematic diagram of the flow condition when the window of the rotary partition mechanism of the present invention is fully closed; Figure 4 This is a structural diagram of the flow condition of the rotating partition mechanism of the present invention when the window is fully opened. Figure 5 It is a structural schematic diagram of the steam regulating valve of the present invention.

[0018] Description of reference numerals: 101. Partition; 102. First through hole; 103. Partition shaft; 104. Rotating plate; 105. Window; 201. Guide groove; 202. Positioning pin; 301. Hydraulic press; 302. Valve regulating connecting rod mechanism; 401. Bracket; 402. Drive rod; 403. Pry bar; 404. First connecting rod; 405. Second connecting rod; 5. Angle sensor. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-Figure 5 , the specific embodiments of the present invention are described in detail, but it should be understood that the scope of protection of the present invention is not limited by the specific embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] like Figure 1-Figure 4 As shown, the present invention provides a large volume flow rotating baffle mechanism, comprising: a baffle 101 and a rotating plate 104, wherein the baffle 101 is provided with a plurality of first through holes 102, the baffle 101 is provided with a baffle rotating shaft 103, and the plurality of first through holes 102 are distributed along the circumference of the baffle rotating shaft 103; the rotating plate 104 is fitted with the baffle 101, the rotating plate 104 is provided with a through-shaft hole, the rotating plate 104 is rotatably connected to the baffle rotating shaft 103 through the through-shaft hole, the rotating plate 104 is provided with a plurality of windows 105, the plurality of windows 105 are arranged on the baffle 101, and the plurality of windows 105 are arranged on the baffle 101. The plurality of windows 105 are distributed along the circumference of the partition plate rotation axis 103 and can be divided into three groups according to the size of the cross-sectional area. The three groups of windows 105 are arranged in descending order according to the cross-sectional area. Each window 105 corresponds to a first through hole 102 having the same structure as the first through hole 102. When the rotating plate 104 rotates, the group of windows 105 with the largest cross-sectional area first communicates with the corresponding first through hole 102, and then the group of windows 105 with the medium cross-sectional area communicates with the corresponding first through hole 102, until each window 105 is connected to the corresponding first through hole 102.

[0021] The working principle of the above embodiment is briefly described below: This rotating baffle mechanism 101 increases the size of each window 105 on the baffle 101 circumferentially around the baffle's rotating shaft 103. This allows for high steam volume flow at low pressure and temperature parameters, enabling the adjustment of steam extraction capacity (requiring control of steam flow rate within a certain range). The different sizes (i.e., cross-sectional areas) of the windows 105 are used to control the order in which steam passes through them. For example, the windows 105 with the smallest cross-sectional area form the first group, the windows 105 with medium cross-sectional areas form the second group, and the windows 105 with the largest cross-sectional area form the third group. By rotating the baffle, the windows 105 of different sizes are sequentially connected, thereby controlling the order in which steam passes through them. This structure ensures the ability to adjust the partial steam intake, enabling more refined steam distribution and utilization, thereby improving steam utilization efficiency and turbine internal efficiency. Theoretically, this can increase turbine internal efficiency by several hundred kilowatts. Furthermore, by enlarging the size of each window 105 on the partition 101 in the circumferential direction of the partition shaft 103, the steam can have a large volume flow characteristic when low pressure and temperature parameters are met, so that it has the function of adjusting the steam extraction capacity.

[0022] Adjust steam flow in stages: through the window 105 sequence of "large → medium → small", avoid sudden changes in steam flow rate, reduce turbulence and pressure loss, ensure stable increase in steam linear velocity, improve impulse turning capacity and improve internal efficiency.

[0023] The reasons why partial steam inlet improves the efficiency of the steam turbine are: 1. Reduce throttling losses Disadvantages of full-circle steam inlet: When the turbine is operating at low load, if all the turbine nozzles are open, the steam flow rate of each nozzle will be significantly reduced. In this case, the steam cannot fully expand in the nozzle, resulting in a reduced flow rate and throttling loss (the steam is not fully converted into kinetic energy, and some energy is dissipated as heat).

[0024] Advantages of partial steam inlet: By closing some nozzles, the steam flow is concentrated to a small number of nozzles, keeping the steam flow rate of these nozzles within the high-efficiency range. The steam fully expands in the nozzles, the flow rate is higher, reducing throttling losses and improving energy conversion efficiency.

[0025] 2. Optimize nozzle outlet velocity Partial steam inlet allows for more efficient nozzle design. When steam is concentrated through a small number of nozzles, the nozzle geometry (e.g., a convergent-divergent type) can more precisely match the steam expansion requirements, bringing the exit steam velocity closer to the theoretical optimum (e.g., reaching supersonic speed), thereby maximizing kinetic energy output.

[0026] 3. Reduce secondary flow losses in moving blades The problem of full-circle steam inlet: When steam enters all moving blade channels evenly, the boundary layer effect and end vortex (secondary flow) will increase significantly, especially at low loads. These flow separation phenomena will aggravate energy loss.

[0027] Improvements in partial steam inlet: Steam impacts only a portion of the moving blades, leaving the blade areas uncovered by steam in a "stationary" state, reducing overall secondary flow losses. Furthermore, steam is concentrated on a specific area of ​​the blades, potentially creating a more stable flow.

[0028] 4. Flexibility to adapt to changing working conditions At partial load, full-circle steam inlet causes all nozzles to be inefficient. However, partial steam inlet can close some nozzles, allowing the remaining nozzles to operate at a higher load, maintaining high internal efficiency. This regulation method is similar to "stage control" and is more adaptable to load changes in actual operation.

[0029] Optimize thermodynamic efficiency: large window 105 provides sufficient flow area under low density steam, medium window 105 maintains flow rate, and small window 105 ensures full flow capacity.

[0030] Proportional adaptation of volumetric flow: Based on the density characteristics of low-parameter steam (0.12MPa(a), 100℃), the nozzle opening ratio (28:16:12) can balance the flow rate and volume requirements, increase the steam linear velocity and achieve the purpose of increasing kinetic energy.

[0031] The large volume flow rotating baffle mechanism of the present invention can meet the design requirements of the steam turbine under low parameter extraction conditions. The rotating baffle mechanism 101 is designed to have a structural feature of partial steam inlet, so that the steam has a higher linear velocity, thereby improving the impulse turning ability and the efficiency within the turbine.

[0032] On the basis of the above embodiments, in order to ensure that the steam has a predetermined linear velocity, high impulse capability and internal efficiency of the steam turbine are guaranteed.

[0033] like Figure 1 、 Figure 3 and Figure 4 As shown, the large-volume flow rotating baffle mechanism as described in claim 1 is characterized in that the sum of the cross-sectional areas of the multiple windows 105 is A, the sum of the cross-sectional areas of a group of windows 105 with the largest cross-sectional areas is A1, the sum of the cross-sectional areas of a group of windows 105 with medium cross-sectional areas is A2, and the sum of the cross-sectional areas of a group of windows 105 with the smallest cross-sectional areas is A3, wherein A1=50%A, A2=28.5%A, and A3=21.5%A.

[0034] As a preferred solution, Figure 1 and Figure 3As shown, the number of windows 105 in the group with the largest cross-sectional area is 7, the number of windows 105 in the group with medium cross-sectional area is 4, and the number of windows 105 in the group with the smallest cross-sectional area is 3. The first group (largest windows 105): The number of windows 105 is 7, accounting for 50% of the total area of ​​windows 105, corresponding to the number of nozzles is 28, which are evenly distributed and widely spaced, and are opened first to guide the initial steam flow.

[0035] The second group (medium windows 105): the number of windows 105 is 4, accounting for about 28.5% of the total window 105 area, corresponding to the number of nozzles is 16, located between the first group of windows 105, and is used to provide a medium flow cross-section when the steam flow rate increases.

[0036] The third group (smallest window 105): the number of windows 105 is 3, accounting for about 21.5% of the total window 105 area, corresponding to the number of nozzles is 12, located outside the adjacent second group of windows 105, and fully open when the maximum flow demand is.

[0037] The area ratio and number of the windows 105 are designed to the above-mentioned area ratio and number based on the structural size limitation of the rotating plate 104. Since the rotating plate 104 is circular, it is necessary to ensure that when the last window 105 is open, the first window 105 is also open, thereby ensuring that the steam has a predetermined linear velocity, ensuring high impulse capability and efficiency within the turbine.

[0038] As a preferred solution, Figure 1 and Figure 2 As shown, the partition plate 101 is provided with a plurality of guide grooves 201, which are arranged circumferentially along the partition plate rotation axis 103. The rotating plate 104 is provided with a plurality of positioning pins 202, each of which is slidably connected to a guide groove 201. When adjusting the size of the window 105, the positioning pins 202 slide within the guide grooves 201. The positioning pins 202 and the guide grooves 201 guide the rotation of the rotating plate 104 relative to the partition plate 101, which can improve the smooth rotation of the rotating plate 104 under the impact of high-temperature steam, thereby ensuring the adjustment accuracy of the window 105.

[0039] As a preferred solution, Figure 1 and Figure 2 As shown, the plurality of guide grooves 201 are designed in a stepped manner, with the plurality of guide grooves 201 having different groove depths, and each group of windows 105 corresponds to a guide groove 201 of a different groove depth. The stepped guide grooves 201 can limit the opening range of the windows 105 when the rotating plate 104 rotates to adjust the opening of the windows 105, thereby preventing over-adjustment.

[0040] As a preferred solution, Figure 1As shown, the cross sections of the first through hole 102 and the window 105 are both fan-shaped.

[0041] The present invention also provides a steam regulating valve, including a large-volume flow rotating diaphragm mechanism and a servo drive system, wherein the servo drive system includes: an oil hydraulic press 301 and a valve regulating connecting rod mechanism 302, wherein the oil hydraulic press 301 is connected to the valve regulating connecting rod mechanism 302, and the valve regulating connecting rod mechanism 302 is connected to the rotating plate 104, and the oil hydraulic press 301 drives the rotating plate 104 to rotate through the valve regulating connecting rod mechanism 302.

[0042] When regulating steam, the control valve of this device activates the control valve linkage 302 via the hydraulic press 301, thereby rotating the rotating plate 104. This adjusts the connectivity between the windows 105 on the rotating plate 104 and the first through-hole 102 on the partition 101, thereby regulating the steam flow. By controlling the amplitude of the hydraulic press 301's movement, the rotation angle of the rotating plate 104 can be precisely adjusted, thereby achieving precise adjustment of the partial air intake. The opening size of the windows is controlled by the corresponding servo, namely the hydraulic press 301. The lever and rod structure of the control valve linkage 302 is linked to the rotating plate 104 to achieve precise opening and closing control of each group of windows 105.

[0043] As a preferred solution, Figure 4 As shown, the valve regulating linkage mechanism 302 includes a bracket 401, a driving rod 402, a pry bar 403, a first connecting rod 404 and a second connecting rod 405. The middle part of the driving rod 402 and the middle part of the pry bar 403 are both rotatably connected to the bracket 401, one end of the driving rod 402 is connected to the hydraulic press 301, the other end of the driving rod 402 is connected to the first connecting rod 404, the top end of the first connecting rod 404 is connected to one end of the pry bar 403, the bottom end of the first connecting rod 404 is hinged to one side of the rotating plate 104, the top end of the second connecting rod 405 is connected to the other end of the pry bar 403, and the bottom end of the second connecting rod 405 is hinged to the other side of the rotating plate 104. The hydraulic press 301 rotates the drive rod 402. The lever action of the drive rod 402 drives the first connecting rod 404. While rotating the rotating plate 104, the first connecting rod 404 simultaneously drives the second connecting rod 405 in the opposite direction via the pry bar 403. Because the first and second connecting rods 404 and 405 are hinged to the sides of the rotating plate 104, the forces exerted by the first and second connecting rods 404 and 405 ensure stable rotation of the rotating plate 104, ensuring smooth air intake adjustment. The hydraulic press 301 is equipped with a high-precision encoder that provides real-time feedback on the window 105 opening to the PLC control system, creating a closed-loop regulation system with an accuracy of ±0.1mm.

[0044] As a preferred solution, Figure 4As shown, an angle sensor 5 is provided on the partition shaft 103, and the angle sensor 5 is used to monitor the real-time rotation angle of the rotating plate 104. The angle sensor 5 is electrically connected to a controller, and the controller is electrically connected to the oil hydraulic press 301. A predetermined rotation angle is preset in the controller, and the controller compares the predetermined rotation angle with the real-time rotation angle, thereby controlling the action of the oil hydraulic press 301 so that the real-time rotation angle of the rotating plate 104 is the same as the predetermined rotation angle. Through the closed-loop control of the angle sensor 5 and the segmented drive of the oil hydraulic press 301, the steam inlet adjustment accuracy of the entire steam regulating valve is improved to ±2%, significantly optimizing the efficiency of the steam turbine. The redundant design of the mechanical structure enhances the reliability of the system and is suitable for industrial scenarios with frequent adjustments.

[0045] As a preferred solution, a pressure sensor is provided in the steam extraction pipe of the steam turbine. The pressure sensor is used to monitor the real-time air pressure value in the steam extraction pipe. The pressure sensor is electrically connected to the controller. The controller has a preset air pressure threshold. The controller controls the operation of the oil press 301 according to the real-time air pressure value and the air pressure threshold to drive the rotating plate 104 to rotate, thereby adjusting the real-time air pressure value in the steam extraction pipe so that the real-time air pressure value is equal to the air pressure threshold. The steam extraction pipe is provided with a pressure sensor, which can monitor the real-time air pressure in the steam extraction pipe in real time. When the real-time air pressure value is higher than 5% of the design air pressure threshold, the oil press 301 drives the rotating plate 104 to rotate, and the steam regulating valve opening will be appropriately opened. When the flow area increases, the real-time air pressure value of the steam extraction pipe will naturally decrease, and vice versa. Therefore, real-time adjustment of the air pressure value of the steam extraction pipe can be achieved.

[0046] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A large volume flow rotating baffle mechanism, characterized in that: include: A partition (101) is provided with a plurality of first through holes (102); a partition rotating shaft (103) is provided on the partition (101); and the plurality of first through holes (102) are distributed along the circumference of the partition rotating shaft (103); The rotating plate (104) is fitted with the partition (101), and the rotating plate (104) is provided with a through-axis hole. The rotating plate (104) is rotatably connected to the partition shaft (103) through the through-axis hole. The rotating plate (104) is provided with a plurality of windows (105), and the plurality of windows (105) are distributed along the circumference of the partition shaft (103). The plurality of windows (105) can be divided into three groups according to the size of the cross-sectional area. The three groups of windows (105) are arranged in order from large to small according to the cross-sectional area. Each window (105) corresponds to a first through hole (102) with the same structure as the first through hole (102). When the rotating plate (104) rotates, the group of windows (105) with the largest cross-sectional area first communicates with the corresponding first through hole (102), and then the group of windows (105) with the medium cross-sectional area communicates with the corresponding first through hole (102), until each window (105) is communicated with the corresponding first through hole (102).

2. The large volume flow rotating baffle mechanism according to claim 1, characterized in that: The sum of the cross-sectional areas of the plurality of windows (105) is A, the sum of the cross-sectional areas of a group of windows (105) with the largest cross-sectional area is A1, the sum of the cross-sectional areas of a group of windows (105) with a medium cross-sectional area is A2, and the sum of the cross-sectional areas of a group of windows (105) with the smallest cross-sectional area is A3, wherein A1=50%A, A2=28.5%A, and A3=21.5%A.

3. The large volume flow rotating baffle mechanism according to claim 1, characterized in that: The number of the group of windows (105) with the largest cross-sectional area is 7, the number of the group of windows (105) with the medium cross-sectional area is 4, and the number of the group of windows (105) with the smallest cross-sectional area is 3.

4. The large volume flow rotating baffle mechanism according to claim 1, characterized in that: The partition (101) is provided with a plurality of guide grooves (201), and the plurality of guide grooves (201) are arranged along the circumference of the partition shaft (103). The rotating plate (104) is provided with a plurality of positioning pins (202), and each positioning pin (202) is slidably connected in a guide groove (201).

5. The large volume flow rotating baffle mechanism according to claim 4, characterized in that: The multiple guide grooves (201) are designed in a stepped manner, the groove depths of the multiple guide grooves (201) are different, and each group of windows (105) corresponds to a guide groove (201) of a different groove depth.

6. The large volume flow rotating baffle mechanism according to claim 1, characterized in that: The cross-sections of the first through hole (102) and the window (105) are both fan-shaped.

7. A steam regulating valve, characterized in that: The invention comprises a large volume flow rotating baffle mechanism as claimed in claim 1, and also comprises a servo drive system, wherein the servo drive system comprises: an oil hydraulic press (301) and a valve regulating connecting rod mechanism (302), wherein the oil hydraulic press (301) is connected to the valve regulating connecting rod mechanism (302), and the valve regulating connecting rod mechanism (302) is connected to the rotating plate (104), and the oil hydraulic press (301) drives the rotating plate (104) to rotate through the valve regulating connecting rod mechanism (302).

8. The steam regulating valve according to claim 7, characterized in that: The valve regulating connecting rod mechanism (302) comprises a bracket (401), a driving rod (402), a pry rod (403), a first connecting rod (404) and a second connecting rod (405), wherein the middle portion of the driving rod (402) and the middle portion of the pry rod (403) are both rotatably connected to the bracket (401), one end of the driving rod (402) is connected to the oil press (301), the other end of the driving rod (402) is connected to the first connecting rod (404), the top end of the first connecting rod (404) is connected to one end of the pry rod (403), the bottom end of the first connecting rod (404) is hinged to one side of the rotating plate (104), the top end of the second connecting rod (405) is connected to the other end of the pry rod (403), and the bottom end of the second connecting rod (405) is hinged to the other side of the rotating plate (104).

9. The steam regulating valve according to claim 7, wherein: An angle sensor (4) is provided on the partition plate rotating shaft (103). The angle sensor (4) is used to monitor the real-time rotation angle of the rotating plate (104). The angle sensor (4) is electrically connected to a controller. The controller is electrically connected to the oil hydraulic press (301). A predetermined rotation angle is preset in the controller. The controller compares the predetermined rotation angle with the real-time rotation angle, thereby controlling the operation of the oil hydraulic press (301) so that the real-time rotation angle of the rotating plate (104) is the same as the predetermined rotation angle.

10. The steam regulating valve according to claim 7, wherein: A pressure sensor is provided in the steam extraction pipe of the steam turbine. The pressure sensor is used to monitor the real-time air pressure value in the steam extraction pipe. The pressure sensor is electrically connected to the controller. A pressure threshold is preset in the controller. The controller controls the oil press (301) to operate according to the real-time air pressure value and the pressure threshold, so as to drive the rotating plate (104) to rotate, thereby adjusting the real-time air pressure value in the steam extraction pipe so that the real-time air pressure value is equal to the pressure threshold.

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