Water-turbine generator set wriggling monitoring and alarming device

Abstract

The utility model provides a wriggling monitoring and alarming device for a water-turbine generator set. The wriggling monitoring and alarming device of the water-turbine generator set comprises a box body, a controller is fixedly installed on the side face of the box body, and a motor shaft is movably connected into the box body in a sleeved mode. According to the wriggling monitoring and alarming device for the water-turbine generator set, the sliding plate is arranged, when the generator set stops working, the controller and the first conductive column are started, so that the rotating plate is driven to rotate when the motor shaft rotates and wriggles, that is, the sliding plate is pushed by the baffle to move horizontally, and the wriggling of the water-turbine generator set is monitored. The second conductive column is tightly extruded at one end of the first conductive column, so that the loop effect of internal current of the first conductive column and the second conductive column is achieved, a controller can give an alarm in time, and the problems that the sensitivity of a sensor is limited and the reliability is high are solved. And therefore, the practicability of the monitoring and alarming device is improved.

Description

Technical Field

[0001] The utility model relates to the field of alarm devices, in particular to a creep monitoring alarm device for a water turbine generator set. Background Art

[0002] When the turbine unit is stopped and stationary, in theory, the ball valve and guide vane are completely closed and the rotor stays at a certain position. However, in reality, due to the processing accuracy and installation errors of the ball valve and guide vane, the ball valve and guide vane will cause leakage in the turbine unit, which will lead to creep of the turbine. If the creep of the unit cannot be captured in time and braking measures are not taken, it is inevitable that the unit will rotate at a low speed for a long time and the bearing will burn out, affecting the safe and normal operation of the unit. The traditional pneumatic drive creep monitoring device is complicated to install, and there are problems such as leakage, carding, etc. that cause the creep monitoring device to be damaged, and the maintenance workload is large. The traditional non-contact creep monitoring device is to paint black and white stripes on the gear disc. When the unit creeps, the photoelectric sensor measures the rotation angle of the main shaft by monitoring how many black and white stripes have turned. This method has low precision and poor processability, and the photoelectric sensor needs to be maintained frequently.

[0003] In the existing technology, for example, the Chinese patent number is CN 210834178 U, "A water turbine generator set creep monitoring and alarm device", which includes a support plate, a measuring plate, a cylinder I, a displacement meter, and a PLC control system; the measuring plate is located in the middle of the support plate and can slide along the central axis of the support plate; the cylinder I is located on one side of the measuring plate and is fixedly mounted on the support plate, and a slot is provided at the corresponding position of the measuring plate and the cylinder I; the displacement meter includes a sensor and a sensor sheet, the sensor sheet is installed on one side of the measuring plate, the sensor corresponds to the sensor sheet and is fixedly mounted on the support plate; a support foot is provided on both sides of one end of the support plate, the support foot is hinged to the support plate, a cylinder II is provided below the other end of the support plate, and the top of the push rod of the cylinder II is fixedly connected to the support plate. The utility model can detect turbine shafts of different sizes, has a simple structure, is easy to install, and has high detection accuracy.

[0004] In the prior art, when monitoring the creep of the motor group, due to the limited sensitivity of the detection sensor, when the movement of the detection sensor plate is small, it is difficult for the sensor to monitor the position of the sensor plate in time, resulting in poor accuracy in the creep monitoring of the motor group.

[0005] Therefore, it is necessary to provide a water turbine generator set creep monitoring and alarm device to solve the above technical problems. Utility Model Content

[0006] The utility model provides a water turbine generator set creep monitoring alarm device, which solves the problem that due to the limited sensitivity of the detection sensor, when the movement amplitude of the detection sensor is small, the sensor is difficult to monitor the position of the sensor piece in time, thereby resulting in poor accuracy of the motor set creep monitoring.

[0007] In order to solve the above technical problems, the utility model provides a peristaltic monitoring and alarm device for a hydro-turbine generator set, comprising a box body, a controller is fixedly installed on the side of the box body, a motor shaft is movably sleeved inside the box body, a rotating plate is movably sleeved on the side of the motor shaft, a lifting seat is movably sleeved inside the box body, a limiting sleeve is fixedly connected to the top of the lifting seat, a sliding plate is movably sleeved on the top of the limiting sleeve, a baffle is fixedly connected to the top of the sliding plate, a No. 1 conductive column is fixedly installed on one side of the inner wall of the box body, a No. 2 conductive column is fixedly installed on the side of the sliding plate, a No. 1 spring is fixedly connected on the other side of the sliding plate, an electric push rod is fixedly installed on the bottom of the inner cavity of the box body, a limiting column is fixedly connected to the bottom of the inner cavity of the box body, a sliding ball is movably sleeved on the top of the limiting sleeve, and an auxiliary mechanism is arranged inside the rotating plate.

[0008] Preferably, the motor shaft is located directly above the baffle plate, and the motor shaft and the sliding plate are perpendicular to each other.

[0009] Preferably, the sliding plate is matched with the limiting sleeve, and the height of the sliding plate is the same as the height of the No. 1 conductive column.

[0010] Preferably, one end of the No. 1 spring is fixedly connected to one side of the inner wall of the lifting seat, and the number of the No. 1 spring is two.

[0011] Preferably, one end of the electric push rod is fixedly connected to the bottom of the lifting seat, and the electric push rod and the sliding plate are perpendicular to each other.

[0012] Preferably, the limiting column is movably sleeved inside the lifting seat, and the limiting column and the electric push rod are parallel to each other.

[0013] Preferably, there are several sliding balls, and the several sliding balls are evenly distributed on the top of the limiting sleeve.

[0014] Preferably, the auxiliary mechanism comprises a connecting plate, the connecting plate is fixedly connected to the outside of the motor shaft, a No. 2 spring is movably sleeved inside the connecting plate, and one end of the No. 2 spring is movably sleeved inside the rotating plate.

[0015] Compared with the related art, the water turbine generator set creep monitoring and alarm device provided by the utility model has the following beneficial effects:

[0016] The utility model provides a monitoring and alarm device for creeping of a hydro-turbine generator set. By setting a sliding plate, when the generator set stops working, the controller and the first conductive column are started, so that the motor shaft can drive the rotating plate to rotate when creeping, that is, the sliding plate is pushed to move horizontally by the baffle plate, so that the second conductive column can be tightly pressed against one end of the first conductive column, so as to achieve the loop effect of the internal current of the first conductive column and the second conductive column, so that the controller can issue an alarm in time, thereby avoiding the problem that the sensor is difficult to monitor the small creeping of the motor shaft due to the limited sensitivity of the sensor, thereby improving the practicality of the monitoring and alarm device;

[0017] By setting up an auxiliary mechanism, when a single monitoring alarm of the motor group ends, the rotating plate can be flipped outside the connecting plate. At this time, the No. 2 spring can be deformed, causing the flipped rotating plate to move to the other side of the baffle, thereby achieving the effect of separating the baffle and the rotating plate, and then achieving the effect of multiple monitoring alarms of the motor group, thereby bringing convenience to the multiple creep monitoring alarms of the motor group. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a preferred embodiment of a water turbine generator set creep monitoring and alarm device provided by the utility model;

[0019] Figure 2 for Figure 1 A front view of a creep monitoring and alarm device for a hydro-generator set is shown;

[0020] Figure 3 for Figure 1 The diagram shows an enlarged schematic diagram of point A in a creep monitoring and alarm device for a hydro-generator set;

[0021] Figure 4 for Figure 1 A front view of a limit sleeve in a creep monitoring and alarm device for a hydro-generator set is shown.

[0022] Numbers in the figure: 1. Box; 2. Controller; 3. Motor shaft; 4. Rotating plate; 5. Lifting seat; 6. Limiting sleeve; 7. Sliding plate; 8. Baffle; 9. Conductive column No. 1; 10. Conductive column No. 2; 11. Spring No. 1; 12. Electric push rod; 13. Limiting column; 14. Sliding ball; 15. Auxiliary mechanism; 151. Connecting plate; 152. Spring No. 2. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a water turbine generator set creep monitoring and alarm device provided by the utility model; Figure 2 for Figure 1 A front view of a creep monitoring and alarm device for a hydro-generator set is shown; Figure 3 for Figure 1 The diagram shows an enlarged schematic diagram of point A in a creep monitoring and alarm device for a hydro-generator set; Figure 4 for Figure 1 A front view of a limit sleeve in a creep monitoring and alarm device for a hydro-turbine generator set is shown. A creep monitoring and alarm device for a hydro-turbine generator set comprises a box body 1, a controller 2 is fixedly mounted on the side of the box body 1, a motor shaft 3 is movably sleeved inside the box body 1, a rotating plate 4 is movably sleeved on the side of the motor shaft 3, a lifting seat 5 is movably sleeved inside the box body 1, a limit sleeve 6 is fixedly connected to the top of the lifting seat 5, a sliding plate 7 is movably sleeved on the top of the limit sleeve 6, a baffle 8 is fixedly connected to the top of the sliding plate 7, a No. 1 conductive column 9 is fixedly mounted on one side of the inner wall of the box body 1, a No. 2 conductive column 10 is fixedly mounted on the side of the sliding plate 7, a No. 1 spring 11 is fixedly connected to the other side of the sliding plate 7, an electric push rod 12 is fixedly mounted on the bottom of the inner cavity of the box body 1, a limit column 13 is fixedly mounted on the bottom of the inner cavity of the box body 1, a sliding ball 14 is movably sleeved on the top of the limit sleeve 6, and an auxiliary mechanism 15 is arranged inside the rotating plate 4.

[0025] The motor shaft 3 is located directly above the baffle 8, and the motor shaft 3 and the sliding plate 7 are perpendicular to each other; by setting the sliding plate 7, when the generator set stops working, the controller 2 and the No. 1 conductive column 9 are started, so that the motor shaft 3 can drive the rotating plate 4 to rotate when it rotates and creeps, that is, the sliding plate 7 is pushed by the baffle 8 to move horizontally, so that the No. 2 conductive column 10 is tightly squeezed on one end of the No. 1 conductive column 9, thereby achieving a loop effect of the internal current of the No. 1 conductive column 9 and the No. 2 conductive column 10, so that the controller 2 can issue an alarm in time, thereby avoiding the problem that the sensor has limited sensitivity and it is difficult for the sensor to monitor the small creep of the motor shaft 3, thereby improving the practicability of the monitoring and alarm device.

[0026] The sliding plate 7 is matched with the limiting sleeve 6, and the height value of the sliding plate 7 is the same as the height value of the No. 1 conductive column 9; by setting the sliding plate 7, when the rotating plate 4 drives the sliding plate 7 to move horizontally through the baffle 8, the limiting sleeve 6 can limit the position of the horizontally moving sliding plate 7, thereby avoiding the problem that the sliding plate 7 is offset during horizontal movement, causing the No. 2 conductive column 10 to be difficult to squeeze the No. 1 conductive column 9, thereby causing the motor group monitoring failure, thereby improving the stability of the alarm device.

[0027] One end of the No. 1 spring 11 is fixedly connected to one side of the inner wall of the lifting seat 5, and there are two No. 1 springs 11. By setting the No. 1 spring 11, when the sliding plate 7 moves, the No. 1 spring 11 can be deformed, so that when a single monitoring alarm ends, the No. 1 spring 11 can drive the sliding plate 7 to move in the opposite direction, thereby achieving the effect of restoring the position of the sliding plate 7, thereby bringing convenience to multiple monitoring alarms of the motor group.

[0028] One end of the electric push rod 12 is fixedly connected to the bottom of the lifting seat 5, and the electric push rod 12 and the sliding plate 7 are perpendicular to each other. By setting the electric push rod 12, when the motor group creep monitoring is performed, the electric push rod 12 is started, so that the electric push rod 12 can push the lifting seat 5 upward, that is, drive the baffle 8 to be lifted to just below the motor shaft 3, thereby facilitating the start of the monitoring alarm device.

[0029] The limit column 13 is movably sleeved inside the lifting seat 5, and the limit column 13 and the electric push rod 12 are parallel to each other; by setting the limit column 13, when the monitoring alarm device is started and closed, the limit column 13 can limit the position of the lifting seat 5 when it moves up and down, thereby avoiding the problem that the lifting seat 5 tilts when it is raised and lowered, making it difficult for the rotating plate 4 to squeeze the baffle 8 and causing the sliding plate 7 to be unable to slide, thereby improving the stability of the monitoring alarm device when it is working.

[0030] There are several sliding balls 14, and the several sliding balls 14 are evenly distributed on the top of the limiting sleeve 6; by setting the sliding balls 14, when the sliding plate 7 moves horizontally, the sliding balls 14 can support the horizontally moving sliding plate 7, so as to avoid the problem that the sliding plate 7 is difficult to move due to friction on the top of the limiting sleeve 6 when sliding horizontally, thereby improving the smoothness of the horizontal movement of the sliding plate 7, that is, improving the sensitivity of the monitoring alarm device.

[0031] The auxiliary mechanism 15 includes a connecting plate 151, which is fixedly connected to the outside of the motor shaft 3. The interior of the connecting plate 151 is movably sleeved with a No. 2 spring 152, and one end of the No. 2 spring 152 is movably sleeved inside the rotating plate 4. By setting the auxiliary mechanism 15, when the single monitoring alarm of the motor group ends, the rotating plate 4 can be flipped outside the connecting plate 151. At this time, the No. 2 spring 152 can be deformed, so that the flipped rotating plate 4 can be moved to the other side of the baffle 8, thereby achieving the effect of separating the baffle 8 from the rotating plate 4, and then achieving the effect of multiple monitoring alarms of the motor group, thereby bringing convenience to the multiple creep monitoring alarms of the motor group.

[0032] The working principle of the creep monitoring and alarm device of a hydro-generator set provided by the utility model is as follows:

[0033] Step 1: First, when the generator set stops working, start the controller 2 and the No. 1 conductive column 9, so that the motor shaft 3 can rotate and creep to drive the rotating plate 4 to rotate, that is, the baffle 8 pushes the sliding plate 7 to move horizontally, so that the No. 2 conductive column 10 can be tightly squeezed on one end of the No. 1 conductive column 9, thereby achieving the loop effect of the internal current of the No. 1 conductive column 9 and the No. 2 conductive column 10, so that the controller 2 can issue an alarm in time, thereby avoiding the problem that the sensor has limited sensitivity and it is difficult for the sensor to monitor the small creep of the motor shaft 3, thereby improving the practicality of the monitoring alarm device. When the rotating plate 4 drives the sliding plate 7 to move horizontally through the baffle 8, the limit sleeve 6 can move the horizontally moving sliding plate 7 The position of the row is limited, thereby avoiding the problem that the sliding plate 7 is offset when it moves horizontally, which makes it difficult for the second conductive column 10 to squeeze the first conductive column 9, thereby causing the failure of the motor group monitoring, thereby improving the stability of the alarm device. When the sliding plate 7 moves, the first spring 11 is deformed, so that when a single monitoring alarm ends, the first spring 11 can drive the sliding plate 7 to move in the opposite direction, thereby achieving the effect of restoring the position of the sliding plate 7, thereby facilitating multiple monitoring alarms of the motor group. When performing creep monitoring of the motor group, the electric push rod 12 is started, so that the electric push rod 12 can push the lifting seat 5 to lift upward, that is, drive the baffle 8 to lift to the bottom of the motor shaft 3, thereby facilitating the start of the monitoring alarm device;

[0034] The second step: when the monitoring alarm device is started and closed, the limit column 13 is able to limit the position of the lifting seat 5 when it moves up and down, thereby avoiding the problem that the lifting seat 5 tilts when it is lifted and lowered, which makes it difficult for the rotating plate 4 to squeeze the baffle 8 and the sliding plate 7 cannot slide, thereby improving the stability of the monitoring alarm device when it is working. When the sliding plate 7 moves horizontally, the sliding ball 14 is able to support the horizontally moving sliding plate 7, so as to avoid the problem that the sliding plate 7 is difficult to move due to friction on the top of the limit sleeve 6 when it slides horizontally, thereby improving the smoothness of the horizontal movement of the sliding plate 7, that is, improving the sensitivity of the monitoring alarm device. When the single monitoring alarm of the motor group ends, the rotating plate 4 is able to flip over outside the connecting plate 151. At this time, the No. 2 spring 152 is able to deform, prompting the flipped rotating plate 4 to move to the other side of the baffle 8, thereby achieving the effect of separating the baffle 8 from the rotating plate 4, and then achieving the effect of multiple monitoring alarms of the motor group, thereby bringing convenience to the multiple creeping monitoring alarms of the motor group.

[0035] Compared with the related art, the water turbine generator set creep monitoring and alarm device provided by the utility model has the following beneficial effects:

[0036] By setting the sliding plate 7, when the generator set stops working, the controller 2 and the No. 1 conductive column 9 are started, so that the motor shaft 3 can drive the rotating plate 4 to rotate when it rotates and creeps, that is, the sliding plate 7 is pushed to move horizontally through the baffle 8, so that the No. 2 conductive column 10 is tightly squeezed on one end of the No. 1 conductive column 9, thereby achieving a loop effect of the internal current of the No. 1 conductive column 9 and the No. 2 conductive column 10, so that the controller 2 can issue an alarm in time, thereby avoiding the problem that the sensor has limited sensitivity and it is difficult for the sensor to monitor the small creep of the motor shaft 3, thereby improving the practicability of the monitoring and alarm device.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A water turbine generator set creep monitoring and alarm device, comprising a housing (1), characterized in that: A controller (2) is fixedly mounted on the side of the box (1); a motor shaft (3) is movably sleeved inside the box (1); a rotating plate (4) is movably sleeved on the side of the motor shaft (3); a lifting seat (5) is movably sleeved inside the box (1); a limiting sleeve (6) is fixedly connected to the top of the lifting seat (5); a sliding plate (7) is movably sleeved on the top of the limiting sleeve (6); a baffle (8) is fixedly connected to the top of the sliding plate (7); and an inner wall of the box (1) is provided. A No. 1 conductive column (9) is fixedly installed on one side of the box body (1), a No. 2 conductive column (10) is fixedly installed on the side of the sliding plate (7), a No. 1 spring (11) is fixedly connected to the other side of the sliding plate (7), an electric push rod (12) is fixedly installed on the bottom of the inner cavity of the box body (1), a limiting column (13) is fixedly connected to the bottom of the inner cavity of the box body (1), a sliding ball (14) is movably sleeved on the top of the limiting sleeve (6), and an auxiliary mechanism (15) is arranged inside the rotating plate (4).

2. A water turbine generator set creep monitoring and alarm device according to claim 1, characterized in that: The motor shaft (3) is located directly above the baffle plate (8), and the motor shaft (3) and the sliding plate (7) are perpendicular to each other.

3. A water turbine generator set creep monitoring and alarm device according to claim 1, characterized in that: The sliding plate (7) is matched with the limiting sleeve (6), and the height value of the sliding plate (7) is the same as the height value of the first conductive column (9).

4. A water turbine generator set creep monitoring and alarm device according to claim 1, characterized in that: One end of the No. 1 spring (11) is fixedly connected to one side of the inner wall of the lifting seat (5), and the number of the No. 1 spring (11) is two.

5. A water turbine generator set creep monitoring and alarm device according to claim 1, characterized in that: One end of the electric push rod (12) is fixedly connected to the bottom of the lifting seat (5), and the electric push rod (12) and the sliding plate (7) are perpendicular to each other.

6. A water turbine generator set creep monitoring and alarm device according to claim 1, characterized in that: The limiting column (13) is movably sleeved inside the lifting seat (5), and the limiting column (13) and the electric push rod (12) are parallel to each other.

7. A water turbine generator set creep monitoring and alarm device according to claim 1, characterized in that: The number of the sliding balls (14) is several, and the several sliding balls (14) are evenly distributed on the top of the limiting sleeve (6).

8. A water turbine generator set creep monitoring and alarm device according to claim 1, characterized in that: The auxiliary mechanism (15) comprises a connecting plate (151), wherein the connecting plate (151) is fixedly connected to the outside of the motor shaft (3), a No. 2 spring (152) is movably sleeved inside the connecting plate (151), and one end of the No. 2 spring (152) is movably sleeved inside the rotating plate (4).

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