A water turbine brake

Abstract

The utility model relates to water turbine technical field especially relates to a water turbine brake, including the support frame of installation in the one end of machine body, the one end of support frame is provided with the brake mechanism for stopping water turbine rotation, and the brake mechanism includes the limiting casing setting on the support frame, and the side brake shoe setting respectively in the both ends of one side of limiting casing, and one of side brake shoes is fixedly connected with machine body output shaft, and the end face brake shoe is set to one side between two side brake shoes, and the transmission part for driving two side brake shoes to move to the middle with the synchronous drive of end face brake shoe movement is set on the limiting casing. The utility model can carry out the brake fast and stably, has strengthened the stability of brake brake, has promoted the brake efficiency of brake, has guaranteed water turbine to work in the safe range, has prevented the water turbine damage caused by the excessively high rotating speed, has avoided the situation that the brake disc side surface and the friction piece directly contact to cause its appear to shake and influence the brake effect.

Description

Technical Field

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

[0002] The brakes of a water turbine are mainly used to stop the operation of the water turbine when needed, to ensure equipment safety and prevent over-operation. Currently, the brakes mainly work by having friction pads in the brake contact with the turbine's brake disc, generating resistance through friction, thereby slowing down and stopping the turbine's rotation. However, in actual braking processes, due to the rapid rotation of the brake disc, the friction pads directly contact the side of the brake disc, which can easily cause the friction pads to wobble, resulting in unstable braking effects, reduced braking efficiency, and consequently, affected braking performance. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a water turbine brake, which solves the problem that the friction pads shake due to direct contact with the side of the brake disc, thus affecting the braking effect.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A water turbine brake includes a support frame installed at one end of the machine body. A braking mechanism for stopping the rotation of the water turbine is provided at one end of the support frame. The braking mechanism includes a limiting housing provided on the support frame and side brake pads respectively provided at both ends of one side of the limiting housing. One of the side brake pads is fixedly connected to the output shaft of the machine body. An end face brake pad is provided on one side between the two side brake pads. A transmission component is provided on the limiting housing for pushing the end face brake pad to move synchronously and driving the two side brake pads to move towards the middle.

[0005] Furthermore, the transmission component includes sliding transverse grooves disposed at both ends on one side of the limiting housing, and movable stops respectively fixedly disposed at one end of the two side brake pads.

[0006] Furthermore, a square groove is provided in the middle of one side of the limiting housing, and a transmission rack is fixedly provided on one side of each of the two movable blocks, with a transmission gear provided between the two transmission racks.

[0007] Furthermore, a threaded horizontal shaft is fixedly provided on one side of the transmission gear, and a limiting baffle located inside the square groove and fixed to the limiting housing is rotatably provided at one end of the threaded horizontal shaft via a bearing.

[0008] Furthermore, a movable cross frame is fixedly provided on one side of the end face brake pad, and one end of the movable cross frame is slidably connected in the square groove and threadedly connected to the threaded horizontal shaft.

[0009] Furthermore, the two movable blocks slide inside the two sliding transverse grooves respectively, and the two movable blocks are staggered vertically.

[0010] By employing the above technical solution, this utility model provides a water turbine brake, which, compared with the prior art, has at least the following beneficial effects: 1. This utility model slows down and stops the rotation of the water turbine by setting up a braking mechanism. The end face brake pad first contacts the outer ring surface of the water turbine brake disc, gradually reducing the speed of the brake disc. Then, the two side brake pads contact the two sides of the brake disc respectively, which can quickly and stably brake, enhance the stability of the brake, improve the braking efficiency of the brake, ensure that the water turbine operates within a safe range, prevent water turbine damage caused by excessive speed, and avoid the situation where the side of the brake disc directly contacts the friction pad, causing it to shake and affecting the braking effect.

[0011] 2. This utility model uses a transmission component to push the end face brake pads to first contact the outer ring surface of the brake disc, gradually reducing the speed of the brake disc. Simultaneously, it drives the two side brake pads to move towards the middle and contact the two sides of the brake disc respectively. Through friction, resistance is generated, thereby stopping the rotation of the turbine. This allows for rapid response to load and operating condition changes, ensuring the operating accuracy of the turbine. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial side sectional view of the present invention; Figure 3 This is a partial front sectional view of the present invention; Figure 4 This is an exploded view of the transmission component of this utility model.

[0013] In the diagram: 1. Body; 2. Support frame; 3. Braking mechanism; 31. Limiting housing; 32. Side brake pad; 33. End face brake pad; 34. Transmission components; 341. Sliding transverse groove; 342. Movable stop block; 343. Square groove; 344. Transmission rack; 345. Threaded transverse shaft; 346. Limiting baffle; 347. Transmission gear; 348. Movable transverse frame. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] A water turbine is a device that converts the kinetic or potential energy of water flow into mechanical energy. Brakes can quickly stop or slow down the turbine's speed in emergencies, preventing damage or danger caused by equipment failure or other unforeseen circumstances. Because traditional brake friction pads directly contact the side of the rapidly rotating brake disc, they are prone to wobbling. To enhance the stability and efficiency of the brake, such as… Figures 1-4 As shown, a water turbine brake is provided, consisting of a body 1, a support frame 2, and a braking mechanism 3. The support frame 2 is located on one side of the output shaft of the body 1 and is fixedly connected to the body 1. The output shaft of the body 1 can perform linear reciprocating motion.

[0016] To avoid the brake disc from directly contacting the friction pads and causing it to wobble, thus affecting the braking effect, the braking mechanism 3 is set at one end of the support frame 2 and is used to stop the turbine rotation. The braking mechanism 3 includes a limiting housing 31 set on the support frame 2, and side brake pads 32 respectively set at both ends of one side of the limiting housing 31. One of the side brake pads 32 is fixedly connected to the output shaft of the machine body 1. An end face brake pad 33 is set on one side between the two side brake pads 32. The distance between the end face brake pad 33 and the outer ring surface of the brake disc is smaller than the distance between the side brake pads 32 and the side of the brake disc. During braking, the end face brake pad 33 contacts the outer ring surface of the brake disc first. After the speed of the brake disc slows down, the side brake pad 32 can contact the side of the brake disc and stop the turbine rotation.

[0017] In order to respond quickly to changes in load and operating conditions and stably stop the turbine rotation, a transmission component 34 is provided on the limiting housing 31 to synchronously drive the two side brake pads 32 to move towards the middle and push the end face brake pad 33 to contact the turbine brake disc. The transmission component 34 includes sliding transverse grooves 341 provided at both ends on one side of the limiting housing 31, and movable blocks 342 respectively fixedly provided at one end of the two side brake pads 32. The two movable blocks 342 slide inside the two sliding transverse grooves 341 respectively, and the two movable blocks 342 are staggered vertically. The movable blocks 342 slide in the sliding transverse grooves 341 and ensure the stability of the side brake pads 32 when sliding.

[0018] A square groove 343 is provided in the middle of one side of the limiting housing 31. A transmission rack 344 is fixedly provided on one side of each of the two movable blocks 342. A transmission gear 347 is provided between the two transmission racks 344. A threaded horizontal shaft 345 is fixedly provided on one side of the transmission gear 347. A limiting baffle 346 located inside the square groove 343 and fixed to the limiting housing 31 is rotatably provided at one end of the threaded horizontal shaft 345 through a bearing. A movable horizontal frame 348 is fixedly provided on one side of the end face brake pad 33. One end of the movable horizontal frame 348 is slidably connected in the square groove 343 and threadedly connected to the threaded horizontal shaft 345. When the threaded horizontal shaft 345 rotates, it pushes the movable horizontal frame 348 to slide inside the square groove 343. The movable horizontal frame 348 pushes the end face brake pad 33 to move, so that the end face brake pad 33 first contacts the outer ring surface of the brake disc and gradually reduces the speed of the brake disc.

[0019] When the turbine needs to adjust the speed through the brake during power generation, the output shaft of the machine body 1 first pushes one of the side brake pads 32 to move. One of the side brake pads 32 drives the movable stop block 342 at one end to move inside the sliding transverse groove 341. The movable stop block 342 drives the transmission rack 344 on one side to move. One of the transmission racks 344 drives the transmission gear 347 meshing with it to rotate. The transmission gear 347 drives the threaded transverse shaft 345 on one side to rotate. The threaded transverse shaft 345 drives the movable transverse frame 348 to slide inside the square groove 343. The movable transverse frame 348 pushes the end face brake pad 33 to move until the end face brake pad 33 first contacts the outer ring surface of the brake disc, gradually reducing the speed of the brake disc. At the same time, the transmission gear 347 drives another transmission rack 344 to move, and the other transmission rack 344 drives the movable stop block 342 at one end to move, thus driving the other side brake pad 32 to move, thereby driving the two side brake pads 32 to move towards the middle, and the two side brake pads 32 respectively contact the two sides of the brake disc, stopping the rotation of the water turbine.

[0020] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A water turbine brake, comprising a support frame (2) mounted on one end of the machine body (1), characterized in that: One end of the support frame (2) is provided with a braking mechanism (3) for stopping the turbine from rotating. The braking mechanism (3) includes a limiting housing (31) mounted on the support frame (2) and side brake pads (32) respectively mounted on both ends of one side of the limiting housing (31). One of the side brake pads (32) is fixedly connected to the output shaft of the machine body (1). An end face brake pad (33) is mounted on one side between the two side brake pads (32). A transmission component (34) is mounted on the limiting housing (31) to push the end face brake pad (33) to move synchronously and drive the two side brake pads (32) to move towards the middle.

2. The water turbine brake according to claim 1, characterized in that: The transmission component (34) includes sliding transverse grooves (341) disposed at both ends of one side of the limiting housing (31), and movable stops (342) respectively fixedly disposed at one end of the two side brake pads (32).

3. A water turbine brake according to claim 2, characterized in that: A square groove (343) is provided in the middle of one side of the limiting housing (31), and a transmission rack (344) is fixedly provided on one side of each of the two movable blocks (342), and a transmission gear (347) is provided between the two transmission racks (344).

4. A water turbine brake according to claim 3, characterized in that: A threaded horizontal shaft (345) is fixedly provided on one side of the transmission gear (347), and a limiting baffle (346) located inside the square groove (343) and fixed to the limiting housing (31) is rotatably provided at one end of the threaded horizontal shaft (345) through a bearing.

5. A water turbine brake according to claim 4, characterized in that: A movable cross frame (348) is fixedly provided on one side of the end face brake pad (33). One end of the movable cross frame (348) is slidably connected in the square groove (343) and threadedly connected to the threaded horizontal shaft (345).

6. A water turbine brake according to claim 2, characterized in that: The two movable blocks (342) slide inside the two sliding transverse grooves (341) respectively, and the two movable blocks (342) are staggered vertically.

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