Braking device for water-turbine generator set and water-turbine generator

Abstract

The utility model provides a brake device for a water-turbine generator set and a water-turbine generator. The braking device comprises a telescopic driving part, a first transmission part, a second transmission part and a braking part, the first transmission part comprises a first transmission rod and a transmission gear, the first transmission rod is connected to an electric telescopic rod of the telescopic driving part, first transmission teeth are arranged on the first transmission rod, and the first transmission rod is meshed with the transmission gear through the first transmission teeth; the second transmission part comprises a driven gear and a second transmission rod, the driven gear is in transmission connection with the transmission gear, second transmission teeth are arranged on the second transmission rod, and the second transmission rod is meshed with the driven gear through the second transmission teeth; the brake piece is connected to the acting end of the second transmission rod. The braking effect of the hydraulic generator mechanical brake is improved.

Description

Technical Field

[0001] The present application relates to the technical field of hydropower generation, and in particular to a braking device for a hydro-generator set and a hydro-generator. Background Art

[0002] The turbine generator brake (commonly known as the wind gate) is an important component in the mechanical brake system of the unit. The mechanical brake system consists of brakes, air pipes, manual and automatic control devices. Its main functions are: (1) to prevent the unit from running at low speed for a long time during shutdown and to brake quickly; (2) to lift the rotor with a jack during the installation or maintenance of the unit; (3) to prevent the unit from rotating when it is in shutdown; (4) to facilitate the re-establishment of the oil film of the plastic tile unit. The mechanical brake wind gate is a very important equipment in the hydropower plant. The equipment must work stably and reliably to ensure the safe operation of the hydropower plant unit. If the mechanical brake wind gate monitoring has a false alarm, it will affect the unit's startup process and cause the unit to fail to start. In more serious cases, it will cause the unit to shut down, causing huge economic losses to the power plant.

[0003] The brake device is usually controlled by low-pressure brake air. When the unit is shut down, when the unit speed is lower than the brake speed value of the rated speed, the monitoring system sends a command to put the brake air brake into operation. The air source control valve opens and the brake air enters the lower chamber pipeline of the brake device, and the upper chamber pipeline is exhausted to ensure that the mechanical brake device is lifted. When the unit is started, the monitoring system monitors the brake device in operation and sends a command to exit the brake air brake. The air source control valve opens and the brake air enters the upper chamber pipeline of the brake device, and the lower chamber is exhausted, thereby realizing the brake device falling function.

[0004] However, there is a problem in the prior art that the mechanical brake damper of the hydro-turbine generator does not operate properly and the braking effect is poor. Utility Model Content

[0005] The present application provides a braking device for a hydro-turbine generator set and a hydro-turbine generator, so as to solve the problem of poor braking effect of the mechanical brake of the hydro-turbine generator in the prior art.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] On the one hand, an embodiment of the present application provides a braking device, comprising:

[0008] Telescopic drive member;

[0009] A first transmission member includes a first transmission rod and a transmission gear, the first transmission rod is connected to the electric telescopic rod of the telescopic driving member, the first transmission rod is provided with a first transmission tooth, and the first transmission rod is meshed with the transmission gear through the first transmission tooth;

[0010] The second transmission member comprises a driven gear and a second transmission rod, the driven gear is in transmission connection with the transmission gear, the second transmission rod is provided with a second transmission tooth, and the second transmission rod is meshed with the driven gear through the second transmission tooth;

[0011] The brake member is connected to the action end of the second transmission rod, and the brake member comprises a brake surface acting on the rotor to be braked.

[0012] In a possible implementation, the first transmission member further includes:

[0013] The transmission support block is provided with a transmission support hole, and the first transmission rod is arranged in the transmission support hole and is slidably connected with the transmission support block.

[0014] In a possible implementation, the first transmission member further includes:

[0015] A stop controller is arranged at a target workstation along the telescopic direction of the first transmission rod, and the stop controller is also electrically connected to the telescopic driving member.

[0016] In a possible implementation, the second transmission member further includes:

[0017] A driven support block, wherein the driven support block is provided with a driven support hole;

[0018] A rotating shaft is arranged in the driven support hole and is rotatably connected with the driven support block, wherein the transmission gear and the driven gear are coaxially connected through the rotating shaft.

[0019] In a possible implementation, the second transmission member further includes:

[0020] A limiting sleeve, one end of which is open, a second transmission rod is arranged in the limiting sleeve through the opening and is connected to the braking member outside the limiting sleeve, a transmission connection hole is opened on the wall of the limiting sleeve, and the driven gear is meshed with the second transmission tooth on the second transmission rod in the limiting sleeve through the transmission connection hole.

[0021] In a possible implementation, the second transmission tooth is concavely arranged on the shaft of the second transmission rod;

[0022] A bearing sleeve is provided at the opening, the outer sleeve surface of the bearing sleeve is fixedly connected to the inner sleeve wall of the limiting sleeve, the inner sleeve surface of the bearing sleeve is provided with a wear-resistant layer, and is slidably connected to the second transmission rod through the wear-resistant layer.

[0023] In a possible implementation, a counting sensor for counting the number of second transmission teeth passing through the opening is also provided on the limiting sleeve, and the counting sensor is also electrically connected to the telescopic drive member.

[0024] In a possible implementation, the outer wall of the limiting sleeve is also connected to the rotating shaft in the second transmission member.

[0025] In a possible implementation, a replacement port is provided at the other end of the limiting sleeve, and a buffer block is detachably fixedly installed at the replacement port, wherein the second transmission rod is arranged in the limiting sleeve through the buffer block.

[0026] On the other hand, the present application provides a hydro-turbine generator, comprising the braking device of the above-mentioned first aspect and / or various possible implementation modes of the first aspect.

[0027] The present application provides a braking device and a hydro-turbine generator for a hydro-turbine generator set. The braking device connects the first transmission rod with the transmission gear and the second transmission rod with the driven gear in a meshing manner, so that the transmission accuracy is more accurate and the stability of the braking process is ensured. At the same time, the transmission gear and the driven gear are connected in a transmission manner, so that the linear motion of the first transmission rod is converted into rotation, and then the rotation is converted into linear motion, and the lifting and falling actions of the brake member are controlled. The transmission gear and the driven gear serve as the medium for power transmission during the braking process, and can realize indirect control between the telescopic drive member and the brake member, ensuring that the power of the electric telescopic rod can effectively reach the action end of the second transmission rod, making the force transmission more accurate and ensuring the accurate execution of the braking control. Therefore, this embodiment can effectively avoid the problems of insufficient air pressure or pipeline cross-flow that may occur in the air pressure-controlled wind brake, improve the braking force and braking accuracy, ensure the stability of the braking process, and help improve the safety of the braking system. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0029] Figure 1 A schematic diagram of the structure of the braking device provided in the embodiment of the present application Figure 1 ;

[0030] Figure 2 A schematic diagram of the structure of the braking device provided in the embodiment of the present application Figure 2 ;

[0031] Figure 3 A schematic diagram of the structure of the braking device provided in the embodiment of the present application Figure 3 .

[0032] Description of reference numerals:

[0033] 100-telescopic driving member; 110-electric telescopic rod; 200-first transmission member; 210-first transmission rod; 211-first transmission tooth; 220-transmission gear; 230-transmission support block; 231-transmission support hole; 240-stop controller; 300-second transmission member; 310-second transmission rod; 311-second transmission tooth; 320-driven gear; 330-driven support block; 331-driven support hole; 340-rotating shaft; 350-limiting sleeve; 351-opening; 352-transmission connecting hole; 353-counting sensor; 354-buffer block; 360-bearing sleeve; 361-wear-resistant layer; 400-brake member. DETAILED DESCRIPTION

[0034] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0035] In the prior art, the mechanical brake system is composed of brakes, air pipelines, control systems, etc. Its main function is to prevent the unit from running at low speed for a long time during shutdown and to brake quickly; for the unit in shutdown state, it can prevent it from rotating, so as to facilitate the plastic tile unit to re-establish the oil film. The brake damper usually adopts low-pressure brake air control. Since the whole plant is equipped with a set of air compression system and air tank, the mechanical brake damper is arranged in the wind tunnel of each unit. Its air pipeline is long, and there are often phenomena such as insufficient air pressure and air cross-flow in the control system. These problems work together to cause the mechanical brake damper to not work properly, the braking effect is poor, and the system safety is reduced. In addition, the control accuracy of the air pressure control method is poor, which may lead to too small braking force and ineffective braking. At the same time, it causes the equipment to run at low speed for a long time and damage the equipment, resulting in high maintenance costs.

[0036] In response to the above technical problems, an embodiment of the present application provides a braking device, which includes a telescopic drive member, a first transmission member, a second transmission member, and a braking member. The first transmission rod in the first transmission member is connected to the electric telescopic rod of the telescopic drive member. The braking member is pushed by an electric actuator, so that the device reacts more quickly during the braking process. The first transmission tooth on the first transmission rod is meshed with the transmission gear, and the second transmission tooth on the second transmission rod is meshed with the driven gear. At the same time, the transmission gear and the driven gear are connected in transmission, so that the time from receiving the braking signal to the actual braking action is greatly shortened. When the hydro-turbine generator needs to stop quickly, the braking force can be applied quickly to improve the overall response speed of the system. In addition, since the brake member is connected to the action end of the second transmission rod, the electrical action of the telescopic drive member is effectively converted into a mechanical braking action, which reduces the loss in the energy conversion process, and can prevent the gas leakage problem of the existing mechanical brake wind gate, reduce the maintenance frequency and cost, and minimize the loss.

[0037] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0038] Figure 1 A schematic diagram of a brake device provided in an embodiment of the present application Figure 1 ,like Figure 1 As shown, the braking device includes: a telescopic driving member 100, a first transmission member 200, a second transmission member 300 and a braking member 400.

[0039] The telescopic drive member 100 is provided with an electric telescopic rod 110, and the telescopic drive member 100 provides the power required for the entire braking system to drive the first transmission member 200 to achieve the braking action. The first transmission member 200 includes a first transmission rod 210 and a transmission gear 220. The first transmission rod 210 is connected to the electric telescopic rod 110. The first transmission rod 210 is provided with a first transmission tooth 211. The first transmission rod 210 is meshed with the transmission gear 220 through the first transmission tooth 211. The transmission gear 220 is transmission-connected to the driven gear 320, and the second transmission member 300 includes the driven gear 320 and a second transmission rod 310. The second transmission rod 310 is provided with a second transmission tooth 311. The second transmission rod 310 is meshed with the driven gear 320 through the second transmission tooth 311. The active end of the second transmission rod 310 is connected to the brake member 400, and the brake member 400 includes a braking surface that acts on the rotor to be braked.

[0040] The electric telescopic rod 110 is connected to the first transmission rod 210 in the first transmission member 200, and the horizontal movement of the first transmission rod 210 is controlled by the telescopic length of the electric telescopic rod 110, so that the moving distance can be controlled. Since the first transmission rod 210 is provided with a first transmission tooth 211, and the first transmission tooth 211 is meshed with the transmission gear 220, when the first transmission rod 210 moves horizontally, the first transmission tooth 211 drives the transmission gear 220 to rotate. The first transmission rod 210 is made of high-strength steel, and the surface is rust-proofed to ensure the service life in a humid environment. It is responsible for transmitting the power generated by the motor, ensuring that the power generated by the motor can effectively reach the transmission gear 220 and be further transmitted. The transmission gear 220 is made of aluminum alloy material to reduce weight while maintaining good mechanical strength. When the transmission gear 220 rotates, it drives the driven gear 320 to rotate synchronously and transmits force to the second transmission rod 310. The action end of the second transmission rod 310 is connected to the brake member 400. In this way, the second transmission tooth 311 receives the power of the driven gear 320 and converts it into the lifting and lowering action of the second transmission rod 310. As an intermediary for power transmission, the driven gear 320 and the second transmission rod 310 effectively convert the power of the telescopic drive member 100 into the lifting and lowering operation of the brake member 400, and interact with the rotor to be braked of the hydro-turbine generator through the braking surface, thereby realizing direct braking of the hydro-turbine generator set.

[0041] In some embodiments, the telescopic drive member 100 is a telescopic motor, which is electrically connected to a control device. The control device controls the telescopic drive member 100 and adjusts the electric telescopic rod 110, including telescoping and stopping, to ensure that the braking process is controllable.

[0042] Exemplarily, the connection between the first transmission rod 210 and the electric telescopic rod 110 is conducive to power transmission, and can be connected by threaded connection, snap connection, keyway connection, etc. The driven gear 320 is a high-strength steel gear to ensure stability in long-term use. The driven gear 320 and the transmission gear 220 can be connected in rotation by an axial connection, such as a coupling, by arranging the driven gear 320 and the transmission gear 220 on the same shaft, transmitting high torque, so that the driven gear 320 and the transmission gear 220 rotate simultaneously.

[0043] In some embodiments, the second transmission rod 310 is made of carbon steel, and the surface is treated with rust prevention. The brake member 400 is a buffer material, and adopts different shapes and structures according to the specific structure of the hydro-generator set. For example, when the rotating part of the hydro-generator set is circular, the brake member 400 can be a plane structure or an arc structure to adapt to the braking surface of the set. A friction layer is provided on the braking surface, and the friction layer is a high-friction material with strong wear resistance, such as a synthetic ceramic material. The friction layer contacts the rotor to be braked of the hydro-generator through the friction layer, and the friction force is generated by pressure to achieve the braking of the rotating part of the hydro-generator. Correspondingly, the shape of the action end of the second transmission rod 310 is also changed accordingly. In addition, the other end of the contact end of the brake member 400 with the rotating part is fixedly connected to the second transmission rod 310, wherein the brake member 400 and the second transmission rod 310 can be fixedly connected by bolt connection, keyway connection and other connection methods.

[0044] The braking device of the embodiment of the present application connects the electric telescopic rod 110 with the first transmission rod 210, so that the telescopic length of the electric telescopic rod 110 is used to control the horizontal movement distance of the first transmission rod 210, so as to ensure that the braking distance is controllable, and the first transmission tooth 211 on the first transmission rod 210 is meshed with the transmission gear 220, so that the horizontal movement of the first transmission rod 210 is converted into the rotation of the transmission gear 220. At the same time, the transmission gear 220 is rotatably connected with the driven gear 320, so that the driven gear 320 is driven to rotate synchronously. Further, the driven gear 320 is meshed with the second transmission tooth 311 on the second transmission rod 310, so that the second transmission rod 310 is longitudinally moved. Thus, the braking of the hydro-generator set is achieved by the longitudinal movement of the brake member 400 at the action end of the second transmission rod 310. Due to the use of the gear transmission mechanism, the time from receiving the braking signal to the actual braking action is greatly shortened, which provides an important guarantee for the safe operation of the hydropower station, especially when rapid shutdown is required, it can minimize possible losses. Therefore, this embodiment can avoid pipeline cross-flow caused by low-pressure braking, improve control accuracy, reduce maintenance costs, and effectively improve the overall performance and reliability of the hydro-generator set.

[0045] Figure 2 A schematic diagram of a brake device provided in an embodiment of the present application Figure 2 ,like Figure 2 As shown, the braking device includes:

[0046] The first transmission member 200 further includes a transmission support block 230 . A transmission support hole 231 is formed on the transmission support block 230 . The first transmission rod 210 is disposed in the transmission support hole 231 and is slidably connected to the transmission support block 230 .

[0047] Among them, the transmission support block 230 is arranged below the first transmission rod 210, and supports the first transmission rod 210 through the transmission support hole 231, ensuring the smooth movement of the first transmission rod 210 and preventing it from vibrating during horizontal movement, thereby improving the reliability of the entire braking device.

[0048] The inner diameter of the transmission support hole 231 is slightly larger than the outer diameter of the first transmission rod 210, so as to ensure that the first transmission rod 210 can pass through the transmission support hole 231, but the first transmission rod 210 will not be loosened due to the excessive inner diameter, thereby enhancing the structural strength and stability of the transmission support block 230. Exemplarily, a guide rail or a guide groove is provided in the transmission support hole 231, so that the first transmission rod 210 can perform linear motion therein.

[0049] Therefore, the embodiment of the present application improves the stability of the braking device by providing the transmission support block 230 and the transmission support hole 231, which is beneficial to improving the braking efficiency.

[0050] In some embodiments, the first transmission member 200 includes a stop controller 240 , which is disposed at a target position along the telescopic direction of the first transmission rod 210 , and the stop controller 240 is also electrically connected to the telescopic driving member 100 .

[0051] Among them, the stop controller 240 can ensure that the first transmission rod 210 can stop running immediately when needed to prevent damage to the braking device or cause a safety accident. The stop controller 240 is arranged at the target workstation along the telescopic direction of the first transmission rod 210, such as the non-connected end of the first transmission rod 210, to ensure rapid response and control of the operation of the electric telescopic rod 110. The stop controller 240 is electrically connected to the telescopic drive member 100, which is conducive to real-time monitoring of the telescopic condition of the electric telescopic rod 110 and achieving a smooth stop of the equipment. In this way, even if the braking device may have a braking abnormality, the electric telescopic rod 110 and the first transmission rod 210 can also stop quickly.

[0052] In some embodiments, the second transmission member 300 includes a driven support block 330 and a rotating shaft 340. The driven support block 330 is provided with a driven support hole 331. The rotating shaft 340 is disposed in the driven support hole 331 and is rotatably connected to the driven support block 330, wherein the transmission gear 220 is coaxially connected with the driven gear 320 through the rotating shaft 340.

[0053] Among them, the driven support block 330 is located between the transmission gear 220 and the driven gear 320. Since the transmission gear 220 and the driven gear 320 are coaxially connected through the rotating shaft 340, and the rotating shaft 340 passes through the driven support hole 331, the driven support block 330 provides support for the driven gear 320 and the transmission gear 220 at the same time, avoiding the shaking of the transmission gear 220 and the driven gear 320 during the rotation process, ensuring that the axis of the transmission gear 220 and the driven gear 320 are on the same horizontal line, preventing displacement or damage during long-term operation, and ensuring that the driven gear 320 can stably receive the power of the transmission gear 220 and effectively transmit power. Exemplarily, the driven support block 330 is made of shock-resistant and pressure-resistant rubber material, which can effectively absorb vibration and maintain stability. The transmission gear 220 and the driven gear 320 are connected by cylindrical pins or threads through the rotating shaft 340.

[0054] In some embodiments, the transmission gear 220 and the driven gear 320 can also be the same gear. For example, one side of the gear is meshed with a horizontal rack and the other side is meshed with a vertical rack. When the gear rotates, the horizontal rack will move in the horizontal direction and the vertical rack will move in the vertical direction. Alternatively, a differential gear or a helical gear can be selected to achieve the braking process.

[0055] In order to further ensure the operational stability of the braking device, in some embodiments, the transmission support block 230 and the driven support block 330 are fixedly connected to the mounting base. The mounting base is made of corrosion-resistant stainless steel material and has fixed holes on the bottom. Bolt connections and other methods can be used to provide a stable mounting platform for the entire braking device, ensuring the correct installation position and operational stability of all components, and serving as the basis of the entire braking system to ensure the reliability of the structure in actual applications.

[0056] Therefore, the embodiment of the present application is beneficial to improving the stability of the braking device by providing the driven support block 330 and the rotating shaft 340 , and enables high torque to be transmitted between the driving gear 220 and the driven gear 320 .

[0057] Figure 3 A schematic diagram of the structure of the braking device provided in the embodiment of the present application Figure 3 ,like Figure 3 As shown, the braking device includes:

[0058] The second transmission member 300 includes a limiting sleeve 350, one end of which has an opening 351. The second transmission rod 310 is disposed in the limiting sleeve 350 through the opening 351 and is connected to the braking member 400 outside the limiting sleeve 350. A transmission connection hole 352 is provided on the wall of the limiting sleeve 350. The driven gear 320 engages with the second transmission tooth 311 on the second transmission rod 310 in the limiting sleeve 350 through the transmission connection hole 352.

[0059] Among them, the limiting sleeve 350 can limit the longitudinal movement range of the second transmission rod 310, ensuring that the second transmission rod 310 maintains the correct direction and path for movement during operation and does not exceed the specified movement range, preventing the second transmission rod 310 from driving the brake member 400 to move excessively and cause mechanical damage, thereby improving the safety of the braking device. At the same time, through the transmission connection hole 352 opened on the cylinder wall of the limiting sleeve 350, the driven gear 320 can engage with the second transmission tooth 311 on the second transmission rod 310, and transmit the rotational force of the driven gear 320 to the second transmission rod 310, thereby achieving the functions of deceleration and torque transmission. On the other hand, the second transmission rod 310 is arranged in the limiting sleeve 350 through the opening 351 to prevent the second transmission rod 310 from falling off therefrom, and can only move along the opening direction, thereby improving the reliability of the system and making the engagement between the second transmission rod 310 and the driven gear 320 more secure. In some embodiments, the limiting sleeve 350 has a certain elasticity or buffering function, and can be made of a highly wear-resistant copper alloy. The inner wall is coated with a thin layer of lubricant to reduce friction, thereby absorbing shock and vibration and protecting other components in the mechanical system.

[0060] Therefore, in the embodiment of the present application, a limiting sleeve 350 is disposed outside the second transmission rod 310 , and a transmission connection hole 352 is opened on the limiting sleeve 350 , which is beneficial to improving the movement accuracy of the second transmission rod 310 and providing a reliable operating environment.

[0061] In some embodiments, the second transmission tooth 311 is concavely disposed on the shaft of the second transmission rod 310 .

[0062] A bearing sleeve 360 ​​is provided at the opening 351 . The outer surface of the bearing sleeve 360 ​​is fixedly connected to the inner wall of the limiting sleeve 350 . The inner surface of the bearing sleeve 360 ​​is provided with a wear-resistant layer 361 , and is slidably connected to the second transmission rod 310 via the wear-resistant layer 361 .

[0063] Through the recessed design, the engagement between the driven gear 320 and the second transmission tooth 311 can be made more compact, thereby reducing the overall size of the system and facilitating movement and maintenance. In addition, it can also ensure that the second transmission tooth 311 is not affected by the external environment, such as dust and dirt, thereby extending the service life of the second transmission rod 310 and the driven gear 320, reducing the displacement and vibration of the driven gear 320, and improving the system accuracy.

[0064] The inner surface of the bearing sleeve 360 ​​is provided with a wear-resistant layer 361, which is a ceramic material or a wear-resistant polymer. Through its low friction coefficient, the friction resistance is reduced, thereby reducing energy consumption and improving the operating efficiency of the equipment. At the same time, when supporting the second transmission rod 310 for longitudinal movement, the shape of the second transmission rod 310 is guaranteed to be stable, the performance degradation caused by friction is reduced, its service life is extended, the performance of the braking device is ensured to be stable, and the braking action is ensured to be smooth. On the other hand, the bearing sleeve 360 ​​can be used to control the gap between the limiting sleeve 350 and the second transmission rod 310, ensure proper fit and lubrication, and reduce wear.

[0065] Therefore, in the embodiment of the present application, by recessing the second transmission tooth 311 in the shaft of the second transmission rod 310 , the service life of the braking device can be extended, and by providing a bearing sleeve 360 ​​at the opening 351 , it is helpful to reduce equipment loss and extend the service life of the equipment.

[0066] In some embodiments, a counting sensor 353 for counting the number of the second transmission teeth 311 passing through the opening 351 is also provided on the limiting sleeve 350 , and the counting sensor 353 is also electrically connected to the telescopic driving member 100 .

[0067] The counting sensor 353 is arranged on the limiting sleeve 350. In order to accurately measure the number of teeth of the second transmission teeth 311 passing through the opening 351, the counting sensor can be arranged at the transmission connection hole 352 on the limiting sleeve 350. The counting sensor 353 can be a photoelectric sensor or an inductive sensor, which is not limited in this embodiment. The counting sensor 353 is electrically connected to the telescopic drive member 100, and can effectively realize the control of the entire braking device by the telescopic drive member 100. That is to say, when the telescopic drive member 100 controls the electric telescopic rod 110 to perform telescopic movement, through the transmission of the first transmission member 200 and the second transmission member 300, the counting sensor 353 can accurately measure the number of teeth of the second transmission teeth 311 passing through the opening 351, and cooperate with the telescopic drive member 100 to ensure that the working process is accurate.

[0068] Exemplarily, when the counting sensor 353 satisfies the counting requirement for the number of teeth of the second transmission tooth 311, the maximum stroke of the electric telescopic rod 110 driving the first transmission rod 210 is less than the stroke of the second transmission rod 310. At this time, the non-connected end of the electric telescopic rod 110 is located at a first point position, and the non-connected end of the first transmission rod 210 and the electric telescopic rod 110 are located at a second point position, and the first point position is closer to the motor setting than the second point position.

[0069] In actual applications, the changing number of teeth of the second transmission tooth 311 passing through the opening 351 is detected by the counting sensor 353. On the one hand, the moving distance of the second transmission rod 310 can be determined, thereby determining the position of each component, and realizing the precise positioning of the first transmission member 200 and the second transmission member 300 in the braking device. On the other hand, abnormal situations can be detected. For example, when the counting of the counting sensor 353 is abnormal during operation, the gear jamming, equipment wear or failure can be quickly known, which is convenient for timely maintenance and repair to avoid equipment damage or shutdown. At the same time, the detection of the number of teeth by the counting sensor 353 is beneficial to the control of the gear speed and torque, improve the system performance, and ensure the normal operation of the braking device.

[0070] In some embodiments, the outer wall of the limiting sleeve 350 is also connected to the rotating shaft 340 in the second transmission member 300 .

[0071] For example, in an emergency situation, such as a power system failure or an emergency shutdown of the unit, emergency braking is required. At this time, the reverse force of the second transmission rod 310 may be too large and cause deviation. After the outer wall of the limiting sleeve 350 is connected to the rotating shaft 340 in the second transmission member 300, it can ensure that the limiting sleeve 350 is not affected by the second transmission rod 310, and the brake member 400 is controlled to brake quickly, thereby increasing system stability.

[0072] In some embodiments, a replacement port is provided at the other end of the limiting sleeve 350 , and a buffer block 354 is detachably fixedly installed at the replacement port, wherein the second transmission rod 310 is disposed in the limiting sleeve 350 through the buffer block 354 .

[0073] Among them, the buffer block 354 can absorb and slow down the force generated by the second transmission rod 310 during the braking process. For example, when the second transmission rod 310 is subjected to a reverse force, the buffer block 354 can absorb these forces to prevent the second transmission rod 310 from being directly transmitted to other components, thereby reducing damage to the system, ensuring smooth operation of the system, and reducing noise and wear.

[0074] Therefore, in the embodiment of the present application, by setting the limiting sleeve 350, the accuracy of the second transmission rod 310 can be ensured. At the same time, adding the wear-resistant layer 361, the counting sensor 353, and the buffer block 354 can improve the system performance, extend the service life of the braking device, and reduce the equipment maintenance cost.

[0075] The embodiment of the present application also provides a hydro-turbine generator, comprising the above-mentioned braking device. It can be understood that the hydro-turbine generator has the beneficial effects of the above-mentioned braking device, which will not be described in detail.

[0076] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0077] In the description of the present application, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0078] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can make the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] The various embodiments or implementations in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0080] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A braking device, characterized in that: include: Telescopic driving member (100); A first transmission member (200), comprising a first transmission rod (210) and a transmission gear (220), wherein the first transmission rod (210) is connected to the electric telescopic rod (110) of the telescopic driving member (100), and the first transmission rod (210) is provided with a first transmission tooth (211), and the first transmission rod (210) is meshed with the transmission gear (220) via the first transmission tooth (211); A second transmission member (300) comprises a driven gear (320) and a second transmission rod (310), wherein the driven gear (320) is transmission-connected to the transmission gear (220), and the second transmission rod (310) is provided with a second transmission tooth (311), and the second transmission rod (310) is meshed with the driven gear (320) via the second transmission tooth (311); A brake member (400) is connected to the action end of the second transmission rod (310), and the brake member (400) comprises a brake surface that acts on the rotor to be braked.

2. The braking device according to claim 1, characterized in that: The first transmission member (200) further comprises: A transmission support block (230) is provided with a transmission support hole (231); the first transmission rod (210) is arranged in the transmission support hole (231) and is slidably connected to the transmission support block (230).

3. The braking device according to claim 1, characterized in that: The first transmission member (200) further comprises: A stop controller (240), wherein the stop controller (240) is arranged at a target workstation along the telescopic direction of the first transmission rod (210), and the stop controller (240) is also electrically connected to the telescopic driving member (100).

4. The braking device according to claim 1, characterized in that: The second transmission member (300) further comprises: A driven support block (330), wherein the driven support block (330) is provided with a driven support hole (331); A rotating shaft (340), wherein the rotating shaft (340) is disposed in the driven support hole (331) and is rotationally connected to the driven support block (330), wherein the transmission gear (220) and the driven gear (320) are coaxially connected via the rotating shaft (340).

5. The braking device according to claim 1, characterized in that: The second transmission member (300) further comprises: A limiting sleeve (350), one end of the limiting sleeve (350) is opened (351), the second transmission rod (310) is arranged in the limiting sleeve (350) through the opening (351), and is connected to the braking member (400) outside the limiting sleeve (350), a transmission connection hole (352) is opened on the wall of the limiting sleeve (350), and the driven gear (320) is meshed with the second transmission tooth (311) on the second transmission rod (310) in the limiting sleeve (350) through the transmission connection hole (352).

6. The braking device according to claim 5, characterized in that: The second transmission tooth (311) is arranged in a concave manner on the shaft of the second transmission rod (310); A bearing sleeve (360) is provided at the opening (351); an outer sleeve surface of the bearing sleeve (360) is fixedly connected to an inner sleeve wall of the limiting sleeve (350); an inner sleeve surface of the bearing sleeve (360) is provided with a wear-resistant layer (361), and is slidably connected to the second transmission rod (310) via the wear-resistant layer (361).

7. The braking device according to claim 6, characterized in that: The limiting sleeve (350) is also provided with a counting sensor (353) for counting the number of teeth of the second transmission teeth (311) passing through the opening (351); the counting sensor (353) is also electrically connected to the telescopic driving member (100).

8. The braking device according to claim 6, characterized in that: The outer wall of the limiting sleeve (350) is also connected to the rotating shaft (340) in the second transmission member (300).

9. The braking device according to claim 5, characterized in that: The other end of the limiting sleeve (350) is provided with a replacement opening, and a buffer block (354) is detachably fixedly installed at the replacement opening, wherein the second transmission rod (310) is arranged in the limiting sleeve (350) through the buffer block (354).

10. A hydro-generator, characterized in that: A brake device comprising the brake device according to any one of claims 1 to 9.

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