A turbine turning gear control device with emergency function

Abstract

This utility model discloses a turbine turning gear control device with emergency function, including a fixed base, a clutch sleeve, a transmission disc assembly, a drive motor, and an output shaft. The drive motor drives the clutch sleeve and the transmission disc assembly to transmit power through the output shaft. The clutch sleeve engages with the engagement sleeve on the driven disc, enabling kinetic energy transfer between the transmission disc and the drive motor. Through a buffer disc and spring, the device can absorb torque fluctuations, preventing system damage due to overload or torque impact. This utility model uses a servo motor to control the rapid disengagement of the clutch sleeve, quickly cutting off power transmission and preventing prolonged high-load operation, thereby protecting the equipment from damage.

Description

Technical Field

[0001] This utility model relates to the field of turning gear devices, specifically a turbine turning gear control device with emergency function. Background Technology

[0002] In modern industry, steam turbines, as important power machinery, are widely used in power plants, petrochemical industries, and other energy sectors. Turning gear operation of a steam turbine is to ensure the lubrication of its mechanical parts by running it at low speed after shutdown, preventing bearing dry friction and ensuring normal operation when the turbine is restarted. Typically, steam turbine turning gear is achieved through a turning gear control device, which is responsible for precisely controlling the turbine's rotation and ensuring smooth and safe transmission.

[0003] Currently, most turning gear control devices rely primarily on simple mechanical structures to transmit power. However, traditional turning gear control devices often suffer from the following problems:

[0004] Torque fluctuation problem: Traditional turning gears may experience torque fluctuations when transmitting power, especially during start-up and shutdown. The instability of torque can cause a large impact on the equipment, which in turn leads to increased wear of mechanical parts and may even cause equipment failure.

[0005] Insufficient emergency protection: In the event of a fault or abnormal operating condition, most existing turning gear control devices are unable to quickly and effectively cut off power transmission or provide emergency protection, resulting in the equipment being in a high-load or unstable state for a long time, increasing the risk of failure, and in severe cases, it may lead to equipment damage.

[0006] Inflexible power transmission control: The clutch system of traditional devices is relatively simple to control and lacks sufficient flexibility. It cannot respond and adjust quickly under different loads and operating conditions, which affects the adaptability and safety of the system.

[0007] Therefore, there is an urgent need for a new turning gear control device that can effectively buffer torque during operation to avoid adverse effects of torque fluctuations on the equipment, while also having a strong emergency protection function that can quickly cut off power transmission in case of abnormal situations to protect the safety of the equipment. Utility Model Content

[0008] The purpose of this utility model is to provide a turbine turning gear control device with emergency function, which can smoothly transmit power during operation, quickly disconnect power transmission in the event of a fault, and reduce torque fluctuation through a buffer mechanism, thereby protecting the equipment from damage.

[0009] The technical solution of this utility model is as follows:

[0010] A turbine turning gear control device with emergency function includes: a fixed base, a clutch sleeve, a transmission disc assembly, and a drive motor and a servo motor fixed to the surface of the fixed base. An output shaft is rotatably mounted on the surface of the fixed base. A sliding key is provided on the surface of the output shaft and sleeved inside the clutch sleeve. The clutch sleeve is slidably sleeved on the surface of the output shaft and the sliding key, and one end of the clutch sleeve is provided with meshing teeth. The transmission disc assembly includes a driven disc, a transmission disc, and a buffer disc fixed to the surface of the driven disc. A coupling sleeve is provided on the surface of the driven disc and rotatably sleeved on the surface of the output shaft. The meshing teeth are matched and arranged opposite each other. The surface of the transmission disk is provided with teeth that mesh with the output end of the drive motor. The other side of the transmission disk is provided with insert teeth. The surface of the buffer disk is provided with a groove and a spring. The insert teeth are inserted into the inner side of the groove and abut against one end of the spring. The spring is fixed to the surface of the driven disk. One side of the transmission disk and one side of the driven disk slide against each other. The output end of the servo motor is connected to a crank rod. The surface of the crank rod is provided with a paddle. The surface of the clutch sleeve is provided with a groove, and the paddle slides against the inner side of the groove.

[0011] Specifically, the driven disk surface engagement sleeve has a bevel gear structure, and the output end of the drive motor is provided with bevel teeth that mesh with the engagement sleeve.

[0012] Specifically, the driven disk and the transmission disk are rotatably sleeved on the surface of the output shaft, and the surface of the output shaft is provided with positioning structures on both sides of the transmission disk assembly to prevent the transmission disk assembly from sliding axially on the surface of the output shaft.

[0013] Specifically, the paddle is arc-shaped and its end face slides against the inner side of the paddle groove. The connection point between the paddle and the crankshaft is offset from the axis of the servo motor output end.

[0014] Specifically, the number of springs is several and they are evenly arranged in a circumferential direction. The insert teeth are arranged in a one-to-one correspondence with the springs, and after the insert teeth are inserted into the inner side of the engagement groove, they abut against the end of the spring.

[0015] Specifically, the buffer disc is rotatably mounted inside the driven disc and the transmission disc, and the middle section of the spring is fixedly connected to the surface of the driven disc.

[0016] The assembly includes a fixed base, a clutch sleeve, a transmission disc assembly, a drive motor, and an output shaft. The drive motor drives the output shaft to rotate via its output end, and the output shaft engages with the clutch sleeve via a sliding key on its surface. During operation, the clutch sleeve meshes with a coupling sleeve on the driven disc, transmitting torque to the transmission disc through the driven disc, causing them to rotate synchronously.

[0017] When it is necessary to cut off the power transmission, the clutch sleeve disengages from the driven plate, thereby cutting off the linkage between the drive motor and the output shaft and realizing clutch control.

[0018] The transmission disc assembly includes a driven disc, a transmission disc, and a buffer disc. The driven disc engages with the meshing teeth on the clutch sleeve via a coupling sleeve, enabling kinetic energy transmission between the transmission disc and the output shaft.

[0019] The transmission disc has teeth on its surface, which mesh with the output of the drive motor. When the driven disc rotates, the linkage between the teeth and the engagement groove drives the buffer disc and the transmission disc to move synchronously, thereby achieving torque buffering. The buffer disc absorbs any possible reaction torque through springs, preventing excessive torque from impacting the system.

[0020] The servo motor is connected to a paddle shifter via a crankshaft, and the paddle shifter contacts a groove on the clutch sleeve. After receiving a control signal, the servo motor moves the paddle shifter via the crankshaft, thereby controlling the sliding and engagement of the clutch sleeve, thus achieving engagement or disengagement between the clutch sleeve and the driven disc.

[0021] The buffer disc is located between the driven disc and the transmission disc, and is rotatably mounted inside both discs. The buffer disc absorbs the reaction force from the torque through springs, preventing torque fluctuations from impacting the transmission system and ensuring smooth operation of the control device under different load conditions.

[0022] Beneficial effects

[0023] Emergency function: This utility model can quickly cut off power transmission by controlling the clutch sleeve to disengage via a servo motor, thereby avoiding prolonged high-load operation and protecting the equipment from damage.

[0024] Torque buffer: Through the design of the buffer disc and spring, this device can absorb torque fluctuations, ensuring the smoothness of power transmission during system startup, shutdown or failure, and avoiding equipment impact.

[0025] Smooth transmission: During normal operation, the drive motor achieves stable power transmission through the transmission disc assembly, ensuring precise and smooth turning control of the steam turbine.

[0026] Enhanced safety and reliability: This device is designed to effectively cope with abnormal operating conditions, quickly activate the emergency protection mode, and prevent equipment damage caused by abnormal load or failure. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the surface structure of the fixed base and output shaft according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the transmission disc assembly structure according to an embodiment of the present invention;

[0030] Figure 4 This is an exploded view of the transmission disc assembly according to an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the back structure of the driven disk according to an embodiment of the present invention.

[0032] Figure label:

[0033] 100. Fixed base; 110. Drive motor; 120. Output shaft; 121. Slide key; 200. Clutch sleeve; 210. Slot; 220. Engaging teeth; 300. Transmission disc assembly; 310. Driven disc; 320. Transmission disc; 330. Buffer disc; 311. Engaging sleeve; 321. Rake teeth; 322. Shaping teeth; 331. Engaging groove; 332. Spring; 400. Servo motor; 410. Crankshaft; 420. Paddle shifter. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0035] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0036] The following is in conjunction with the appendix Figures 1-5 This invention describes a turbine turning gear control device with emergency function, provided by some embodiments of the present invention.

[0037] This embodiment provides the structure of a turbine turning gear control device with emergency functions, which is described in detail below:

[0038] A turbine turning gear control device with emergency function includes: a fixed base 100, a clutch sleeve 200, a transmission disc assembly 300, and a drive motor 110 and a servo motor 400 fixed to the surface of the fixed base 100. An output shaft 120 is rotatably mounted on the surface of the fixed base 100. A sliding key 121 is provided on the surface of the output shaft 120 and sleeved inside the clutch sleeve 200. The clutch sleeve 200 is slidably sleeved on the surfaces of the output shaft 120 and the sliding key 121, and one end of the clutch sleeve 200 is provided with meshing teeth 220. The transmission disc assembly 300 includes a driven disc 310, a transmission disc 320, and a buffer disc 330 fixed to the surface of the driven disc 310. A coupling sleeve 311 is provided on the surface of the driven disc 310 and rotatably sleeved on the surface of the output shaft 120. The sleeve 311 is structurally compatible with the meshing teeth 220 and arranged opposite each other. The surface of the transmission disk 320 is provided with ridge teeth 321 that mesh with the output end of the drive motor 110. The other side of the transmission disk 320 is provided with insert teeth 322. The surface of the buffer disk 330 is provided with a engagement groove 331 and a spring 332. The insert teeth 322 are inserted into the inner side of the engagement groove 331 and abut against one end of the spring 332. The spring 332 is fixed to the surface of the driven disk 310. One side of the transmission disk 320 and one side of the driven disk 310 slide against each other. The output end of the servo motor 400 is connected to a crank rod 410. The surface of the crank rod 410 is provided with a paddle 411. The surface of the clutch sleeve 200 is provided with a paddle groove 210, and the paddle 411 slides against the inner side of the paddle groove 210.

[0039] Among them, the driven disk 310 surface engagement sleeve 311 has a bevel gear structure, and the output end of the drive motor 110 is provided with bevel teeth that mesh with the engagement sleeve 311.

[0040] The driven disk 310 and the transmission disk 320 are rotatably sleeved on the surface of the output shaft 120, and the surface of the output shaft 120 is provided with positioning structures on both sides of the transmission disk assembly 300 to prevent the transmission disk assembly 300 from sliding axially on the surface of the output shaft 120.

[0041] Among them, the paddle 411 is in the shape of an arc block, and the end face of the paddle 411 slides against the inner side of the paddle groove 210. The connection point between the paddle 411 and the crank 410 is offset from the output end axis of the servo motor 400.

[0042] The springs 332 are numerous and evenly arranged in a circumferential direction. The insert teeth 322 are arranged in a one-to-one correspondence with the springs 332. After the insert teeth 322 are inserted into the inner side of the engagement groove 331, they abut against the end of the springs 332.

[0043] The buffer disk 330 is rotatably mounted inside the driven disk 310 and the transmission disk 320, and the middle section of the spring 332 is fixedly connected to the surface of the driven disk 310.

[0044] The fixed base 100 is used to support the entire control device, and the drive motor 110 drives the output shaft 120 to rotate through its output end. The output shaft 120 cooperates with the clutch sleeve 200 through the sliding key 121 on its surface.

[0045] The clutch sleeve 200 is slidably sleeved on the surface of the output shaft 120 and the slide key 121, and one end is provided with a meshing tooth 220. When working, the clutch sleeve 200 engages with the engagement sleeve 311 on the driven disc 310, and the torque is transmitted to the clutch sleeve 200 and the output shaft 120 through the engagement sleeve 311 so that they rotate synchronously.

[0046] When it is necessary to cut off the power transmission, the clutch sleeve 200 disengages from the driven plate 310, thereby cutting off the linkage between the drive motor 110 and the output shaft 120 and realizing clutch control.

[0047] The transmission disc assembly 300 includes a driven disc 310, a transmission disc 320, and a buffer disc 330. The driven disc 310 engages with the meshing teeth 220 on the clutch sleeve 200 through the engagement sleeve 311, so that the transmission disc 320 and the drive motor 110 can transmit kinetic energy.

[0048] The transmission disc 320 has teeth 321 on its surface, which mesh with the output end of the drive motor 110. When the transmission disc 320 rotates, the linkage between the teeth 322 and the engagement groove 331 drives the buffer disc 330 to rotate, thereby achieving torque buffering. The buffer disc 330 absorbs any possible reaction torque through the spring 332, preventing excessive torque from impacting the system.

[0049] The servo motor 400 is connected to the paddle shifter 411 via the crank lever 410, and the paddle shifter 411 contacts the groove 210 on the clutch sleeve 200. After receiving a control signal, the servo motor 400 drives the paddle shifter 411 to move via the crank lever 410, thereby controlling the sliding and engagement of the clutch sleeve 200, thus realizing the engagement or disengagement between the clutch sleeve 200 and the driven disc 310.

[0050] The buffer disc 330 is located between the driven disc 310 and the transmission disc 320, and is rotatably mounted on the inner side of the driven disc 310 and the transmission disc 320. The buffer disc 330 absorbs the reaction force from the torque through the spring 332, avoiding the impact of torque fluctuations on the transmission system and ensuring the smooth operation of the control device under different load conditions.

[0051] In another embodiment, the function of the control device is further optimized, specifically through the following improvements:

[0052] The clutch sleeve 200 can quickly disengage from the transmission disc assembly 300 under different operating conditions to avoid prolonged high-load operation. Through the precise control of the servo motor 400, in conjunction with the crank lever 410 and the paddle shifter 411, the clutch sleeve 200 can achieve smooth engagement and disengagement.

[0053] The buffer disk 330 in this embodiment uses an improved spring 332, whose stiffness and response speed are further optimized, enabling the control device to quickly absorb the reaction force generated by overload in a short time.

[0054] In the event of an abnormal situation, the clutch sleeve 200 disengages from the engagement sleeve 311, cutting off the power transmission between the transmission disc assembly 300 and the output shaft 120. At this time, the control device can quickly activate the emergency stop mode to protect the system from further damage.

[0055] Detailed operating steps

[0056] When the turbine is turning, the drive motor 110 works, driving the transmission disc assembly 300 to rotate synchronously, while the output shaft 120 remains stationary.

[0057] The servo motor 400 is connected to the paddle shifter 411 via the crank lever 410. The paddle shifter 411 contacts the groove 210 on the clutch sleeve 200. After receiving a control signal, the servo motor 400 moves the paddle shifter 411 via the crank lever 410, thereby controlling the sliding of the clutch sleeve 200. The clutch sleeve 200 slides and engages with the engagement sleeve 311 on the driven disc 310, thus beginning the transmission of power.

[0058] Power is gradually transmitted to the output shaft 120 through the transmission disc 320, buffer disc 330, driven disc 310, and coupling sleeve 311, and the output shaft 120 performs turbine turning gear drive.

[0059] In the event of a sudden malfunction, the servo motor 400 controls the crank 410 to rotate, and the paddle 411 drives the clutch sleeve 200 to disengage, cutting off power transmission and stopping the equipment operation.

[0060] During operation, the buffer disk 330 absorbs torque fluctuations, ensuring the smooth operation of the device.

[0061] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A turbine run-up control device with emergency function, characterized in that, include: The assembly includes a fixed base (100), a clutch sleeve (200), a transmission disc assembly (300), and a drive motor (110) and a servo motor (400) fixed to the surface of the fixed base (100). An output shaft (120) is rotatably mounted on the surface of the fixed base (100). A sliding key (121) is provided on the surface of the output shaft (120) and sleeved inside the clutch sleeve (200). The clutch sleeve (200) is slidably sleeved on the output shaft (120). The drive disc assembly (300) includes a driven disc (310), a drive disc (320), and a buffer disc (330) fixed to the surface of the driven disc (310). The surface of the driven disc (310) is provided with a coupling sleeve (311) that is rotatably sleeved on the surface of the output shaft (120). The coupling sleeve (311) engages with the meshing teeth (220). The structures are adapted to each other and arranged opposite each other. The surface of the transmission disk (320) is provided with teeth (321) that mesh with the output end of the drive motor (110). The other side of the transmission disk (320) is provided with teeth (322). The surface of the buffer disk (330) is provided with a groove (331) and a spring (332). The teeth (322) are inserted into the inner side of the groove (331) and abut against one end of the spring (332). The spring (332) is fixed to the surface of the driven disk (310). One side of the transmission disk (320) and one side of the driven disk (310) slide against each other. The output end of the servo motor (400) is connected to a crank rod (410). The surface of the crank rod (410) is provided with a paddle (411). The surface of the clutch sleeve (200) is provided with a groove (210), and the paddle (411) slides against the inner side of the groove (210).

2. The turbine turning gear control device with emergency function according to claim 1, characterized in that, The driven disk (310) surface engagement sleeve (311) has a bevel gear structure, and the output end of the drive motor (110) is provided with bevel teeth that mesh with the engagement sleeve (311).

3. A turbine run-up control device with emergency function according to claim 1, characterized in that The driven disk (310) and the transmission disk (320) are rotatably sleeved on the surface of the output shaft (120), and the surface of the output shaft (120) is provided with positioning structures on both sides of the transmission disk assembly (300) to prevent the transmission disk assembly (300) from sliding axially on the surface of the output shaft (120).

4. The turbine turning gear control device with emergency function according to claim 1, characterized in that, The paddle (411) is in the shape of an arc block, and the end face of the paddle (411) slides against the inner side of the paddle groove (210). The connection point between the paddle (411) and the crank (410) is offset from the axis of the output end of the servo (400).

5. A turbine run-up control device with emergency function according to claim 1, characterized in that The number of springs (332) is several and they are evenly arranged in a circumferential direction. The insert teeth (322) are arranged in a one-to-one correspondence with the springs (332). After the insert teeth (322) are inserted into the inner side of the connecting groove (331), they abut against the end of the springs (332).

6. A turbine run-up control device with emergency function according to claim 1, characterized in that The buffer disk (330) is rotatably mounted on the inner side of the driven disk (310) and the transmission disk (320), and the middle section of the spring (332) is fixedly connected to the surface of the driven disk (310).

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