Hydropower station mechanical brake state on-line monitoring device

Abstract

The utility model discloses a hydropower station mechanical brake state on-line monitoring device comprising a brake assembly which comprises a base plate and a brake shoe seat. The monitoring assembly comprises a fixed column, a connecting rod, a sliding groove, a sliding shaft and a displacement sensor; the fixing columns are fixedly connected to the centers of the two sides of a brake shoe seat, one ends of the connecting rods are sleeved with the outer surfaces of the fixing columns, the sliding grooves are formed in the two ends of the bottom plate, the sliding shafts are sleeved with the lower ends of the connecting rods, and the displacement sensors are fixedly connected to the two ends in the sliding grooves. A monitoring assembly is arranged, a brake shoe seat moves to drive a fixing column to move, then the fixing column drives a connecting rod to move, the connecting rod drives a sliding shaft to move by a corresponding distance in a sliding groove, the moving distance of the sliding shaft is measured through a displacement sensor, and therefore the moving distance of the brake shoe seat is measured. And the movement of the brake tile can be monitored in real time.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station brake technology, and in particular to an online monitoring device for the status of hydropower station mechanical brakes. Background Technology

[0002] The brake in a hydropower station generally refers to the turbine generator brake, commonly known as the air gate. It is an important component of the unit's mechanical braking system and a very important piece of equipment in a hydropower plant. The equipment must work stably and reliably to ensure the safe operation of the hydropower plant's units, and the position of the turbine generator brake needs to be monitored in real time.

[0003] The existing mechanical brake position monitoring uses a crank arm position switch. Because the crank arm position switch has a mechanical dead zone, the dead zone gradually becomes larger after long-term operation, which will lead to false operation or failure to operate, directly affecting the success rate of unit start-up and shutdown, and in severe cases, affecting the safe operation of the unit. Therefore, there is a need to provide a device that can monitor the status of the mechanical brake in real time to monitor the position of the mechanical brake. Utility Model Content

[0004] The purpose of this utility model is to provide an online monitoring device for the status of mechanical brakes in hydropower stations, in order to solve the problem mentioned in the background art that the existing mechanical brake position monitoring uses a crank arm type position switch. Because the crank arm type position switch has a mechanical dead zone, after long-term operation, the dead zone gradually becomes larger, which will lead to false operation or failure to operate, directly affecting the success rate of unit start-up and shutdown, and in severe cases, affecting the safe operation of the unit.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an online monitoring device for the status of mechanical brakes in hydropower stations, comprising:

[0007] A brake assembly, the brake assembly including a base plate and a brake bearing seat;

[0008] The monitoring component includes a fixed column, a connecting rod, a slide groove, a sliding shaft, and a displacement sensor;

[0009] The fixed column is fixedly connected to the center of both sides of the brake bearing seat. One end of the connecting rod is sleeved on the outer surface of the fixed column. The sliding groove is opened at both ends of the base plate. The sliding shaft is sleeved inside the lower end of the connecting rod. The displacement sensor is fixedly connected to both ends inside the sliding groove.

[0010] Furthermore, the brake assembly also includes a brake seat and brake pads;

[0011] The brake seat is fixedly connected to the center of the upper end of the base plate, the brake pad seat is fixedly connected to the top of the brake seat, and the brake pad is fixedly connected to the outer end of the brake pad seat.

[0012] Furthermore, the two sets of connecting rods are inclined, and the sliding shaft is slidably connected to the center position inside the sliding groove.

[0013] Furthermore, the groove has a cross-shaped structure, and the displacement sensor is flush with the sliding shaft.

[0014] Furthermore, it also includes a warning component, which includes a first slider, a pressure sensor, a telescopic spring, a second slider, and a warning light;

[0015] The first slider is fixedly connected to the center of the slide groove, the pressure sensor is fixedly connected to the inside of both sides of the first slider, the telescopic spring is fixedly connected to the outside of the pressure sensor, the second slider is fixedly connected to the outside of the telescopic spring, and the warning light is fixedly connected to both sides of the upper end of the base plate.

[0016] Furthermore, the second slider is slidably connected to both sides inside the groove, and the warning light is electrically connected to the pressure sensor via a circuit.

[0017] Compared with existing technologies, the advantages of this utility model are:

[0018] I. This utility model, by setting up a monitoring component, moves the brake pad seat, which in turn moves the fixed column, which in turn moves the connecting rod, which in turn moves the sliding shaft within the slide groove a corresponding distance. The displacement sensor measures the moving distance of the sliding shaft, thereby measuring the moving distance of the brake pad seat, and enabling real-time monitoring of the movement of the brake pad.

[0019] II. Based on the first beneficial effect, by setting up an early warning component, when the brake pads wear out, the brake pad seat and brake pads need to move a greater distance. When the brake pad seat moves upward too much, the brake pad seat drives the sliding shaft to move through the fixed column and connecting rod. The sliding shaft drives the second slider to move. The movement of the second slider drives the telescopic spring to compress. The pressure sensor measures the elastic force of the telescopic spring. When the pressure sensor measures the elastic force to exceed the set value, it indicates that the maximum distance the brake pad seat moves exceeds the set value, which means that the brake pads are worn excessively. The pressure sensor controls the warning light to alert the outside world. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is the front view of the present utility model;

[0022] Figure 2 This is a structural diagram of the brake assembly of this utility model;

[0023] Figure 3 This is a structural diagram of the monitoring component of this utility model;

[0024] Figure 4 This is a structural diagram of the early warning component of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 11. Base plate; 12. Brake seat; 13. Brake bearing seat; 14. Brake bearing; 21. Fixing post; 22. Connecting rod; 23. Slide groove; 24. Sliding shaft; 25. Displacement sensor; 31. First slider; 32. Pressure sensor; 33. Telescopic spring; 34. Second slider; 35. Warning light. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0031] Please see Figure 1-3 As shown, this embodiment is an online monitoring device for the status of mechanical brakes in a hydropower station, comprising:

[0032] A brake assembly, comprising a base plate 11 and a brake bearing seat 13;

[0033] The monitoring component includes a fixed column 21, a connecting rod 22, a slide groove 23, a sliding shaft 24, and a displacement sensor 25;

[0034] The fixed column 21 is fixedly connected to the center of both sides of the brake bearing seat 13. One end of the connecting rod 22 is sleeved on the outer surface of the fixed column 21. The sliding groove 23 is opened at both ends of the base plate 11. The sliding shaft 24 is sleeved on the inner part of the lower end of the connecting rod 22. The displacement sensor 25 is fixedly connected to both ends of the sliding groove 23.

[0035] The fixed column 21 is used to support the upper end of the connecting rod 22, the connecting rod 22 is used to drive the sliding shaft 24 to move, the slide groove 23 is used to guide the movement of the sliding shaft 24, the sliding shaft 24 is used to limit the lower end of the connecting rod 22, and the displacement sensor 25 is used to measure the movement distance of the sliding shaft 24.

[0036] The brake assembly also includes a brake seat 12 and a brake pad 14;

[0037] The brake seat 12 is fixedly connected to the center of the upper end of the base plate 11, the brake pad seat 13 is fixedly connected to the top of the brake seat 12, and the brake pad 14 is fixedly connected to the outer end of the brake pad seat 13.

[0038] The base plate 11 is used to support the brake seat 12, the brake seat 12 is used to support the brake pad seat 13 and drive the brake pad seat 13 to move outward, the brake pad seat 13 is used to support the brake pad 14, and the brake pad 14 is used for braking.

[0039] The two sets of connecting rods 22 are inclined, and the sliding shaft 24 is slidably connected to the center of the slide groove 23;

[0040] When the fixed column 21 moves outward, the fixed column 21 drives the upper end of the connecting rod 22 to move outward, and the lower end of the connecting rod 22 rotates along the fixed column 21 under the limit of the sliding shaft 24.

[0041] The slide groove 23 has a cross-shaped structure, and the displacement sensor 25 is flush with the sliding shaft 24;

[0042] When the connecting rod 22 moves, the moving connecting rod 22 drives the sliding shaft 24 to move, and the displacement sensor 25 measures the moving distance of the sliding shaft 24.

[0043] Working principle: When it is necessary to monitor the movement of the brake pad 13 and brake pad 14 in real time, when the brake pad 13 and brake pad 14 move outward, the brake pad 13 drives the fixed column 21 to move outward, the fixed column 21 drives the upper end of the connecting rod 22 to move outward, and the lower end of the connecting rod 22 is limited by the sliding shaft 24, so that when the connecting rod 22 moves upward, it rotates along the fixed column 21. The rotation of the connecting rod 22 drives the sliding shaft 24 inside the slide groove 23. The displacement sensor 25 measures the moving distance of the sliding shaft 24. Based on the moving distance of the sliding shaft 24, the moving distance of the fixed column 21 can be judged, thereby enabling real-time monitoring of the position of the brake pad 13 and brake pad 14.

[0044] Please see Figure 4 As shown, this embodiment, based on the above embodiment, further includes:

[0045] The warning component includes a first slider 31, a pressure sensor 32, a telescopic spring 33, a second slider 34, and a warning light 35.

[0046] The first slider 31 is fixedly connected to the center of the slide groove 23, the pressure sensor 32 is fixedly connected to the inner positions of both sides of the first slider 31, the telescopic spring 33 is fixedly connected to the outer end of the pressure sensor 32, the second slider 34 is fixedly connected to the outer end of the telescopic spring 33, and the warning light 35 is fixedly connected to both sides of the upper end of the base plate 11.

[0047] The first slider 31 is used to support the pressure sensor 32, the pressure sensor 32 is used to measure the elastic force of the telescopic spring 33, the telescopic spring 33 is used to deform under the action of the second slider 34, the second slider 34 is used to determine the position of the sliding shaft 24, and the warning light 35 is used to warn the outside world.

[0048] The second slider 34 is slidably connected to both sides inside the slide groove 23, and the warning light 35 is electrically connected to the pressure sensor 32 through a circuit.

[0049] The second slider 34 can move along the inside of the slide groove 23 under the drive of the sliding shaft 24;

[0050] Working principle: When the brake pad 14 is excessively worn, the brake pad 14 and the brake pad seat 13 need to move outward a greater distance. The brake pad seat 13 drives the sliding shaft 24 to move a greater distance inside the slide groove 23 through the fixed column 21 and the connecting rod 22. The movement of the sliding shaft 24 drives the second slider 34 to move. The movement of the second slider 34 drives the telescopic spring 33 to compress. The pressure sensor 32 measures the elastic force of the telescopic spring 33. When the elastic force of the telescopic spring 33 exceeds the set value, it indicates that the telescopic spring 33 is compressed too much. It can be seen that the second slider 34 has moved too far, thus determining that the movement distance of the brake pad seat 13 and the brake pad 14 is too far. The pressure sensor 32 controls the warning light 35 to work, indicating to the outside world that the brake pad 14 is excessively worn and needs to be replaced in time.

[0051] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An online monitoring device for the status of mechanical brakes in hydropower stations, characterized in that, include: A brake assembly, the brake assembly including a base plate (11) and a brake bearing seat (13). The monitoring component includes a fixed column (21), a connecting rod (22), a slide groove (23), a sliding shaft (24), and a displacement sensor (25). The fixed column (21) is fixedly connected to the center of both sides of the brake bearing seat (13), one end of the connecting rod (22) is sleeved on the outer surface of the fixed column (21), the sliding groove (23) is opened at both ends of the base plate (11), the sliding shaft (24) is sleeved on the inner end of the lower end of the connecting rod (22), and the displacement sensor (25) is fixedly connected to both ends inside the sliding groove (23).

2. The online monitoring device for the status of mechanical brakes in a hydropower station according to claim 1, characterized in that, The brake assembly also includes a brake seat (12) and a brake pad (14). The brake seat (12) is fixedly connected to the center of the upper end of the base plate (11), the brake pad seat (13) is fixedly connected to the top of the brake seat (12), and the brake pad (14) is fixedly connected to the outer end of the brake pad seat (13).

3. The online monitoring device for the status of mechanical brakes in a hydropower station according to claim 1, characterized in that, The two sets of connecting rods (22) are inclined, and the sliding shaft (24) is slidably connected to the center of the sliding groove (23).

4. The online monitoring device for the status of mechanical brakes in a hydropower station according to claim 1, characterized in that, The groove (23) has a cross-shaped structure, and the displacement sensor (25) is flush with the sliding shaft (24).

5. The online monitoring device for the status of mechanical brakes in a hydropower station according to claim 1, characterized in that, It also includes a warning component, which includes a first slider (31), a pressure sensor (32), a telescopic spring (33), a second slider (34), and a warning light (35). The first slider (31) is fixedly connected to the center of the slide groove (23), the pressure sensor (32) is fixedly connected to the inside of both sides of the first slider (31), the telescopic spring (33) is fixedly connected to the outer end of the pressure sensor (32), the second slider (34) is fixedly connected to the outer end of the telescopic spring (33), and the warning light (35) is fixedly connected to both sides of the upper end of the base plate (11).

6. The online monitoring device for the status of mechanical brakes in a hydropower station according to claim 5, characterized in that, The second slider (34) is slidably connected to both sides inside the groove (23), and the warning light (35) is electrically connected to the pressure sensor (32) through a circuit.

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