Hydropower station unit braking device

Abstract

The utility model provides a hydropower station unit braking device, which relates to the technical field of braking devices, and comprises a fixed carrier plate, and a unit driving component is mounted at one end of the top of the fixed carrier plate; a lower positioning cover is mounted at the top of the fixed carrier plate; supporting vertical plates are installed on the two sides of the top of the lower positioning cover. An upper positioning cover is mounted at the top of the supporting vertical plate, a driving cylinder is mounted at the top of the outer side of the supporting vertical plate, and a guide sliding groove is formed in the side face of the supporting vertical plate; an air pump is installed at the other end of the top of the fixed carrying plate, and a flow guide pipe is installed at the output end of the air pump. The rusted part on the flywheel is cleaned through the rotating wheel, the problem that the braking effect is poor due to powder generated by a rust layer during later braking is solved, the hydropower station unit is quickly braked, the problem that a water turbine of the hydropower station unit may rust in the normal process is solved, and the service life of the hydropower station unit is prolonged. And a rust layer generated by rusting can influence the braking effect.

Description

Technical Field

[0001] This utility model relates to the field of braking device technology, and in particular to a braking device for a hydropower station unit. Background Technology

[0002] A hydropower station unit is a power generation unit composed of a water turbine and a matching generator. Its working principle is to convert the potential or kinetic energy of water into electrical energy. When the unit malfunctions, such as overspeeding or overload, the braking device can intervene in time to cut off the water supply to the water turbine or use the braking principle to stop the unit, thereby preventing damage to the unit components due to overload or failure. In the existing technology, when the braking device brakes the hydropower station unit to stop, the water turbine of the hydropower station unit may rust during normal operation. After rusting, a rust layer will form on the surface. Therefore, when friction braking is performed, the rust layer will affect the braking effect, resulting in an increase in the braking time of the hydropower station unit. Summary of the Invention

[0003] This disclosure relates to a braking device for a hydropower station unit, which addresses the problem in the prior art where, when braking a hydropower station unit to stop, the turbine of the unit may rust during normal operation, resulting in a rust layer on its surface. Therefore, when friction braking is applied, the rust layer affects the braking effect, leading to an increase in the braking time of the hydropower station unit.

[0004] In a first aspect, this disclosure provides a braking device for a hydropower station unit, specifically comprising: a fixed carrier plate, the fixed carrier plate being a rectangular plate structure, and a unit drive assembly mounted on one top end of the fixed carrier plate; a transmission rod mounted on the unit drive assembly; a flywheel mounted on the transmission rod; a lower positioning cover mounted on the top of the fixed carrier plate; support vertical plates mounted on both sides of the top of the lower positioning cover; an upper positioning cover mounted on the top of the support vertical plates, and a drive cylinder mounted on the outer top of the support vertical plates, with guide grooves formed on the sides of the support vertical plates; a guide slider slidably mounted inside the guide grooves via springs; an air pump mounted on the other top end of the fixed carrier plate, with a guide pipe mounted on the output end of the air pump; and a diverter pipe mounted on the side end of the guide pipe.

[0005] Furthermore, guide grooves are provided at the middle positions of the top of the lower positioning cover and the bottom of the upper positioning cover; drive rods are rotatably installed on the inner sides of both the lower and upper positioning covers; a sliding plate is slidably installed on the inner side of the guide groove; and a drive plate is installed at the inner end of the sliding plate.

[0006] Furthermore, the drive plate is slidably mounted inside the lower and upper positioning covers, and the drive plate is also mounted on the outside of the drive rod; a hydraulic drive cylinder is mounted on the outer end of the moving slide plate, and an annular brake pad is mounted on the output end of the hydraulic drive cylinder; a circular brake pad is mounted on the middle position of the annular brake pad via a spring, wherein the annular brake pad and the circular brake pad are also mounted on the outside of the flywheel.

[0007] Furthermore, a rotating rod is installed at the middle position of the guide slider; the rotating rod has a cylindrical structure, and a rotating wheel is installed at the inner end of the rotating rod; the rotating wheel is installed on both sides of the flywheel.

[0008] Furthermore, a limiting plate is installed on the outer side of the outer end of the rotating rod; the limiting plate is installed on the inner and outer sides of the supporting vertical plate; a guide plate is installed on the output end of the top drive cylinder on the outer side of the supporting vertical plate; the guide plate has a triangular structure and is slidably installed on the outer side of the rotating rod.

[0009] Furthermore, a jet pipe is installed on the side of a supporting vertical plate through the side end of the diverter pipe; the bottom of the jet pipe is installed on the top of the lower positioning cover, and a guide groove is provided on the side of the jet pipe, with the guide groove facing the outside of the flywheel; a collection cover is installed on the side of another supporting vertical plate.

[0010] Furthermore, an exhaust pipe is installed at the outer end of the collection hood; a purification drive module is installed at the other end of the top of the fixed carrier plate; the input end of the purification drive module is connected to the side end of the exhaust pipe, and the top of the purification drive module has an exhaust pipe.

[0011] This utility model provides a braking device for hydropower station units, which has the following beneficial effects:

[0012] In use, this invention cleans rusted areas on the flywheel using a rotating wheel. When braking the hydropower station unit, during normal flywheel operation, the guide plate moves downward, pushing the rotating rod to periodically bring the inner rotating wheel close to the outer side of the flywheel. This allows the rotating wheel to contact the flywheel and wipe away the rust layer on the outer side. This periodic wiping and cleaning of the rust layer reduces the problem of poor braking effect caused by powdery rust during later braking, enabling rapid braking of the hydropower station unit and timely handling of emergencies.

[0013] In addition, the airflow ejected from the guide grooves on the side of the jet pipe is used to cool the braked part of the flywheel. When braking the hydropower station unit, the jet pipe is located on one side of the flywheel, and the guide grooves on the two sides of the jet pipe face the two sides of the flywheel. The airflow is ejected through the guide grooves on the side of the jet pipe to cool the braked part of the flywheel, reducing the problem of odor. At the same time, the debris generated by friction blown by the airflow is collected in the collection hood to prevent residual debris from affecting the braking effect. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram:

[0017] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0018] Figure 2 This paper shows a schematic cross-sectional view of the upper positioning cover structure of this application;

[0019] Figure 3 A three-dimensional structural diagram of the annular brake pad of this application is shown;

[0020] Figure 4 A three-dimensional structural diagram of the guide plate of this application is shown;

[0021] Figure 5 A three-dimensional structural diagram of the rotating wheel of this application is shown;

[0022] Figure 6 A three-dimensional structural diagram of the jet pipe of this application is shown;

[0023] List of reference numerals

[0024] 1. Fixed carrier plate; 101. Lower positioning cover; 102. Supporting vertical plate; 103. Upper positioning cover; 104. Guide groove; 105. Drive rod; 106. Carrying slide plate; 107. Drive plate; 108. Annular brake pad; 109. Circular brake pad;

[0025] 2. Guide groove; 201. Guide slider; 202. Rotating rod; 203. Rotating wheel; 204. Limiting plate; 205. Guide plate;

[0026] 3. Guide pipe; 301. Diverter pipe; 302. Jet pipe; 303. Collection hood; 304. Exhaust pipe; 305. Purification drive module; 306. Exhaust pipe;

[0027] 4. Unit drive assembly; 401. Transmission rod; 402. Flywheel. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Please refer to Figures 1 to 6 :

[0030] Example 1:

[0031] This utility model proposes a braking device for a hydropower station unit, comprising: a fixed carrier plate 1, which is a rectangular plate structure, and a unit drive assembly 4 is installed at one top end of the fixed carrier plate 1; a transmission rod 401 is installed on the unit drive assembly 4; a flywheel 402 is installed on the transmission rod 401; a lower positioning cover 101 is installed on the top of the fixed carrier plate 1; support vertical plates 102 are installed on both sides of the top of the lower positioning cover 101; an upper positioning cover 103 is installed on the top of the support vertical plates 102, and a drive cylinder is installed on the outer top of the support vertical plates 102; guide grooves 104 are provided at the middle positions of the top of the lower positioning cover 101 and the bottom of the upper positioning cover 103; the lower positioning cover 101... A drive rod 105 is rotatably mounted on the inner side of both the lower positioning cover 101 and the upper positioning cover 103; a moving slide plate 106 is slidably mounted on the inner side of the guide groove 104; a drive plate 107 is mounted on the inner end of the moving slide plate 106; the drive plate 107 is slidably mounted on the inner side of the lower positioning cover 101 and the upper positioning cover 103, and the drive plate 107 is also mounted on the outer side of the drive rod 105; a hydraulic drive cylinder is mounted on the outer end of the moving slide plate 106, and an annular brake pad 108 is mounted on the output end of the hydraulic drive cylinder; a circular brake pad 109 is mounted on the middle position of the annular brake pad 108 by a spring, wherein the annular brake pad 108 and the circular brake pad 109 are also mounted on the outer side of the flywheel 402.

[0032] In this embodiment, when braking the hydropower station unit, the drive rod 105 inside the lower positioning cover 101 and the upper positioning cover 103 rotates to move the upper and lower drive plates 107. The drive plate 107 drives the carrier slide plate 106 to a suitable position along the guide groove 104. When an emergency occurs in the hydropower station unit, the hydraulic drive cylinder at the outer end of the carrier slide plate 106 drives the annular brake pad 108 and the circular brake pad 109 to approach the flywheel 402 on both sides of the transmission rod 401 on the unit drive assembly 4. Under the action of the spring, the circular brake pad 109 brakes the flywheel 402 first, and then the annular brake pad 108 approaches to brake, gradually performing braking to prevent damage to some parts caused by sudden braking.

[0033] In Embodiment 2, based on Embodiment 1, a guide groove 2 is provided on the side of the supporting vertical plate 102; a guide slider 201 is slidably mounted inside the guide groove 2 via a spring; a rotating rod 202 is installed at the middle position of the guide slider 201; the rotating rod 202 has a cylindrical structure, and a rotating wheel 203 is installed at the inner end of the rotating rod 202; the rotating wheel 203 is installed on both sides of the flywheel 402; a limiting plate 204 is installed on the outer side of the outer end of the rotating rod 202; the limiting plate 204 is installed on the inner and outer sides of the supporting vertical plate 102; a guide plate 205 is installed on the output end of the top drive cylinder on the outer side of the supporting vertical plate 102; the guide plate 205 has a triangular structure, and the guide plate... The outer side of the rotating rod 202 is slidably installed. When braking the hydropower station unit, the drive cylinder at the top of the outer side of the support vertical plate 102 drives the guide plate 205 to move on the outer side of the rotating rod 202. The guide plate 205 moves downward and presses the two rotating rods 202 closer together. The rotating rod 202 drives the guide slider 201 to move along the guide groove 2. The spring on the side of the guide slider 201 is stretched. The limit plate 204 ensures the horizontal movement of the guide slider 201, so that the inner end of the rotating rod 202 drives the rotating wheel 203 to approach the side of the flywheel 402. The rotating wheel 203 periodically wipes and cleans the rusted parts on the outside of the flywheel 402 to improve the braking effect in the later stage.

[0034] In Example 3, based on Example 1, an air pump is installed at the other end of the top of the fixed carrier plate 1, and a guide pipe 3 is installed on the output end of the air pump; a diverter pipe 301 is installed on the side end of the guide pipe 3; a jet pipe 302 is installed on the side of a supporting vertical plate 102 through the side end of the diverter pipe 301; the bottom of the jet pipe 302 is installed on the top of the lower positioning cover 101, and a guide groove is provided on the side of the jet pipe 302, with the guide groove facing the outside of the flywheel 402; a collection cover 303 is installed on the side of another supporting vertical plate 102; an air outlet pipe 304 is installed on the outer end of the collection cover 303; a purification drive module 305 is installed at the other end of the top of the fixed carrier plate 1; the input end of the purification drive module 305 is connected to the side end of the air outlet pipe 304, and the top of the purification drive module 305... When braking the hydropower station unit, the airflow generated by the air pump at the other end of the top of the fixed carrier plate 1 enters the interior of the diversion pipe 301 through the guide pipe 3, causing the airflow to be diverted to the interior of the two jet pipes 302. The airflow cools the braking part on the flywheel 402 through the guide groove on the side of the jet pipe 302, preventing the high temperature of friction from producing odors and causing the braking effect to be weak. The airflow can also blow away the debris generated by the braking friction. At the same time, the purification drive module 305 at the other end of the top of the fixed carrier plate 1 works, absorbing debris and odors through the collection cover 303. The odors and debris enter the purification drive module 305 through the exhaust pipe 304 for treatment, and the purified airflow is discharged through the exhaust pipe 306.

[0035] The working principle of this embodiment is as follows: During use, the drive rod 105 rotates inside the lower positioning cover 101 and the upper positioning cover 103, driving the upper and lower drive plates 107 to move. The drive plates 107 drive the carrier slide plate 106 to a suitable position along the guide groove 104. When an emergency occurs in the hydropower station unit, the hydraulic drive cylinder at the outer end of the carrier slide plate 106 drives the annular brake pad 108 and the circular brake pad 109 to approach the two sides of the flywheel 402. Under the action of the spring, the circular brake pad 109 brakes the flywheel 402 first, and the annular brake pad 108 then approaches to brake. The airflow generated by the air pump at the other end of the top of the fixed carrier plate 1 enters the diversion pipe 301 through the guide pipe 3 and is diverted to the two jet pipes 302. The airflow passes through the jet pipe 3... The side guide groove cools the braking part of the flywheel 402. The airflow can also blow away the debris generated by the braking friction. At the same time, the purification drive module 305 at the other end of the top of the fixed carrier plate 1 works. The collection hood 303 absorbs debris and odors and enters the purification drive module 305 through the air outlet pipe 304 for treatment and then discharges through the exhaust pipe 306. The drive cylinder at the top of the outer side of the support vertical plate 102 drives the guide plate 205 to press down on the outer side of the rotating rod 202, bringing the two rotating rods 202 closer together. The rotating rod 202 drives the guide slider 201 to move along the guide groove 2. The inner end of the rotating rod 202 drives the rotating wheel 203 to approach the side of the flywheel 402 to wipe and clean the rusted parts, improving the braking effect of the later braking.

[0036] The following points should be noted in this article:

[0037] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0038] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0039] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A braking device for a hydropower station generating unit, comprising: A fixed carrier plate (1) is provided, with a unit drive assembly (4) installed at one top end of the fixed carrier plate (1); a transmission rod (401) is installed on the unit drive assembly (4); a flywheel (402) is installed on the transmission rod (401); characterized in that a lower positioning cover (101) is installed on the top of the fixed carrier plate (1); a supporting vertical plate (102) is installed on both sides of the top of the lower positioning cover (101); an upper positioning cover (103) is installed on the top of the supporting vertical plate (102), and a drive cylinder is installed on the top of the outer side of the supporting vertical plate (102), and a guide groove (2) is opened on the side of the supporting vertical plate (102); a guide slider (201) is slidably installed inside the guide groove (2) by a spring; an air pump is installed at the other top end of the fixed carrier plate (1), and a guide pipe (3) is installed on the output end of the air pump; a diverter pipe (301) is installed on the side end of the guide pipe (3).

2. The braking device for a hydropower station unit according to claim 1, characterized in that, Guide grooves (104) are provided at the middle position of the top of the lower positioning cover (101) and the bottom of the upper positioning cover (103); drive rods (105) are rotatably installed on the inner side of the lower positioning cover (101) and the upper positioning cover (103); a moving slide plate (106) is slidably installed on the inner side of the guide groove (104); and a drive plate (107) is installed at the inner end of the moving slide plate (106).

3. The braking device for a hydropower station unit according to claim 2, characterized in that, The drive plate (107) is slidably mounted on the inner side of the lower positioning cover (101) and the upper positioning cover (103), and the drive plate (107) is also mounted on the outer side of the drive rod (105); a hydraulic drive cylinder is mounted on the outer end of the moving slide plate (106), and an annular brake pad (108) is mounted on the output end of the hydraulic drive cylinder; a circular brake pad (109) is mounted on the middle position of the annular brake pad (108) by a spring, wherein the annular brake pad (108) and the circular brake pad (109) are also mounted on the outer side of the flywheel (402).

4. A braking device for a hydropower station unit according to claim 3, characterized in that, A rotating rod (202) is installed at the middle position of the guide slider (201); a rotating wheel (203) is installed at the inner end of the rotating rod (202); the rotating wheel (203) is installed on both sides of the flywheel (402).

5. A braking device for a hydropower station unit according to claim 4, characterized in that, A limiting plate (204) is installed on the outer side of the outer end of the rotating rod (202); the limiting plate (204) is installed on the inner and outer sides of the supporting vertical plate (102); a guide plate (205) is installed on the output end of the top drive cylinder on the outer side of the supporting vertical plate (102); the guide plate (205) is slidably installed on the outer side of the rotating rod (202).

6. A braking device for a hydropower station unit according to claim 5, characterized in that, The side end of the diversion pipe (301) passes through the side of a supporting vertical plate (102) and is equipped with a jet pipe (302); the bottom of the jet pipe (302) is installed on the top of the lower positioning cover (101), and the side of the jet pipe (302) is provided with a guide groove, which faces the outside of the flywheel (402); a collection cover (303) is installed on the side of another supporting vertical plate (102).

7. A braking device for a hydropower station unit according to claim 6, characterized in that, An exhaust pipe (304) is installed at the outer end of the collection hood (303); a purification drive module (305) is installed at the other end of the top of the fixed carrier plate (1); the input end of the purification drive module (305) is connected to the side end of the exhaust pipe (304), and the top of the purification drive module (305) has an exhaust pipe (306).

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