Pumped storage power station unit monitoring device

Abstract

The utility model discloses a pumped storage power station unit monitoring device which comprises a water turbine which is installed on a support and comprises a main shaft, a packing sealing assembly is arranged between the main shaft and the water turbine, and the packing sealing assembly comprises a packing body and a gland. The device further comprises a moving rod, a first guide mechanism, a first detection mechanism, a rotating mechanism and a second detection mechanism. By arranging the moving rod, the first guide mechanism, the first detection mechanism, the rotating mechanism and the second detection mechanism, the rotating state of the main shaft and the abrasion state of the filler body can be monitored, normal operation of a water turbine is guaranteed, and then the operation effect of a pumped storage power station unit is guaranteed. The method has the advantage that the unit operation effect can be guaranteed by timely discovery.

Description

Technical Field

[0001] The utility model relates to the technical field of pumped storage power station units, in particular to a pumped storage power station unit monitoring device. Background Art

[0002] With the continuous growth of the capacity of my country's power system, the daily variation of power load is also increasing. Pumped storage units use the power of the power grid to pump water and store energy during the low period, and release water to generate electricity during the peak period. With its unique operating characteristics of peak-shaving and valley-filling, it plays the role of regulating load, promoting energy conservation of the power system and maintaining the safe and stable operation of the power grid. It will become an effective and indispensable regulating tool for my country's power system. As an important component of pumped storage units, the operation safety of turbines has also received more and more attention. Among them, the main shaft seal of the turbine is an important protective element of the turbine. At present, the main sealing method used is the packing seal assembly.

[0003] However, when the existing pumped-storage power station unit monitoring system is in use, when the main shaft seal gradually wears out, it is not easy to be discovered in time, thus affecting the normal operation of the turbine. In addition, when the main shaft beats, it is not easy to be discovered in time, which will also affect the normal operation of the turbine and further affect the operation effect of the pumped-storage power station unit. Utility Model Content

[0004] The utility model aims to provide a monitoring device for a pumped storage power station unit.

[0005] The utility model has the advantage of being able to detect in time and thus ensuring the operating effect of the unit.

[0006] The technical solution of the utility model: a monitoring device for a pumped storage power station unit, comprising a turbine including a main shaft mounted on a bracket, a packing seal assembly is arranged between the main shaft and the turbine, the packing seal assembly comprises a packing body and a gland; further comprising a moving rod, a first guide mechanism, a first detection mechanism, a rotating mechanism and a second detection mechanism;

[0007] The moving rod is arranged on the side wall of the bracket, and a ball is arranged on one end of the moving rod close to the main shaft; the top of the turbine is rotatably connected to the rotating rod, and the bottom of the rotating rod is fixedly connected to the push rod, and the lower end of the push rod abuts against the top of the gland;

[0008] The first guide mechanism is arranged on the side wall of the bracket and is used to connect the moving rod and the bracket;

[0009] The first detection mechanism is arranged on the side wall of the bracket and is used to detect the movement of the moving rod;

[0010] The rotating mechanism is arranged at the top of the water turbine and is used to rotate the rotating rod;

[0011] The second detection mechanism is arranged on the side wall of the bracket and is used to detect the rotation of the rotating rod.

[0012] In the aforementioned pumped storage power station unit monitoring device, the first guide mechanism includes two symmetrically arranged T-shaped guide rods fixedly connected to the side walls of the bracket, the side walls of the T-shaped guide rods are sleeved with a first slider, and the first slider is fixed to the side wall of the moving rod.

[0013] In the aforementioned pumped-storage power station unit monitoring device, the first detection mechanism includes a U-shaped frame fixedly connected to the side wall of the bracket, the side wall of the U-shaped frame is fixedly inserted with a distance sensor, the side wall of the bracket is connected to a rotating plate through a rotating assembly, and the side wall of the rotating plate is fixedly connected to a first sensing block.

[0014] In the aforementioned pumped-storage power station unit monitoring device, the rotating assembly includes two symmetrically arranged fixed plates fixedly connected to the side walls of the bracket; the rotating plate is rotatably connected to the side walls of the fixed plate through a first rotating shaft, the side wall fixed sleeve of the first rotating shaft is provided with a first gear, and the side wall of the fixed plate is connected to a first rack through a first reset mechanism.

[0015] In the aforementioned pumped-storage power station unit monitoring device, the first reset mechanism includes a first support block fixedly connected to the side wall of the fixed plate, and the side wall of the first support block is fixedly connected to two symmetrically arranged first guide rods; the side wall of the first guide rod is sleeved with two symmetrically arranged second sliders, and the side wall of the first guide rod is also sleeved with a first spring; the second slider is fixed to the side wall of the first rack, and the first rack is meshing with the first gear.

[0016] In the aforementioned pumped-storage power station unit monitoring device, the rotating mechanism includes two symmetrically arranged support plates fixedly connected to the top of the turbine, and the rotating rod is rotatably connected to the side wall of the support plate through a second rotating shaft; the side wall fixed sleeve of the second rotating shaft is provided with a second gear; the side wall of the support plate is connected to a second rack through a second reset mechanism; and the second rack is meshingly arranged with the second gear.

[0017] In the aforementioned pumped-storage power station unit monitoring device, the second reset mechanism includes two symmetrically arranged second support blocks fixedly connected to the side walls of the support plate, and the side walls of the second support blocks are fixedly connected to two symmetrically arranged second guide rods; the side walls of the second guide rods are sleeved with a third slider, and the third slider is fixed to the side wall of the second rack; the side walls of the second guide rods are sleeved with a second spring.

[0018] In the aforementioned pumped-storage power station unit monitoring device, the second detection mechanism includes a movable plate, the upper end of which is fixedly connected to a second sensing block; the movable plate is connected to the side wall of the bracket through a second guide mechanism; and a connecting mechanism is provided between the movable plate and the rotating rod.

[0019] In the aforementioned pumped-storage power station unit monitoring device, the second guide mechanism includes two symmetrically arranged connecting plates fixedly connected to the side walls of the bracket, and a fixing rod is fixedly connected to the top of the connecting plate; the side wall of the fixing rod is sleeved with a fourth slider, and the fourth slider is fixed to the side wall of the movable plate.

[0020] In the aforementioned pumped-storage power station unit monitoring device, the connecting mechanism includes an avoidance groove opened on the side wall of the rotating plate, and the rotating rod is inserted in the avoidance groove; the other end of the rotating plate is fixedly connected to a fixed block, and the side wall of the fixed block is rotatably connected to a connecting rod through a first rotating pin; the other end of the connecting rod is rotatably connected to the side wall of the movable plate through a second rotating pin.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By setting a first detection mechanism, when the turbine is working, the main shaft rotates. At the same time, under the action of the first spring, the ball is abutted against the side wall of the main shaft and rolls thereon. When the rotation of the main shaft jumps, the moving rod will move toward the bracket or away from the bracket. When the moving rod moves toward the bracket, the rotating plate will rotate clockwise along the first rotating shaft. When the moving rod moves away from the bracket, the rotating plate can rotate counterclockwise along the first rotating shaft. By detecting the distance of the first sensing block through the distance sensor, it can be determined whether the jump of the main shaft exceeds the required range, so that the rotation state of the main shaft can be monitored to ensure the normal operation of the turbine, and then ensure the operation effect of the pumped storage power station unit;

[0023] 2. By setting up a second detection mechanism, etc., when the turbine is working, the push rod is abutted against the top of the gland under the action of the second spring. When the filler body is gradually worn, the gland will move downward. At this time, the push rod slides on the top of the gland. At the same time, the rotating rod can rotate upward along the second rotating shaft. When the rotating rod rotates upward, the connecting rod rotates and pushes the movable plate and the second sensing block to move upward. When the filler body is more seriously worn, the gland moves downward for a greater distance, which makes the second sensing block move upward for a greater distance. At this time, when the distance sensor detects the second sensing block, it means that the wear of the filler body is more serious. At this time, an alarm is issued to remind the operator to repair and replace it, so that the wear state of the filler body can be monitored to ensure the normal operation of the turbine and then the operation effect of the pumped storage power station unit.

[0024] Therefore, the present application has the advantage of being able to detect problems in a timely manner and thus ensuring the operating effect of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0027] Figure 3 for Figure 1 The enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0029] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0030] Figure 6 for Figure 4 The enlarged view of point D in the middle;

[0031] Figure 7 for Figure 4 Enlarged view of point E in the middle.

[0032] The marks in the accompanying drawings are: 1-bracket, 2-first guide mechanism, 201-T-shaped guide rod, 202-first slider, 3-first detection mechanism, 301-rotating plate, 302-first sensing block, 303-U-shaped frame, 304-distance sensor, 4-rotating assembly, 401-fixed plate, 402-first rotating shaft, 403-first gear, 404-first rack, 5-first reset mechanism, 501-first support block, 502-first guide rod, 503-second slider, 504-first spring, 6-rotating mechanism, 601-support plate, 602-second rotating shaft, 603-second gear, 604-second rack, 7-first Second reset machine, 701-second support block, 702-second guide rod, 703-third slider, 704-second spring, 8-second detection mechanism, 801-movable plate, 802-second sensing block, 9-second guide mechanism, 901-connecting plate, 902-fixed rod, 903-fourth slider, 10-connecting mechanism, 1001-fixed block, 1002-first rotating pin, 1003-connecting rod, 1004-second rotating pin, 1005-avoidance groove, 11-turbine, 1101-main shaft, 1102-filling body, 1103-pressure cover, 12-moving rod, 13-ball, 14-rotating rod, 15-top rod. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0034] Embodiment. A monitoring device for a pumped storage power station unit, such as Figure 1-7As shown, it includes a turbine 11 including a main shaft 1101 installed on a bracket 1, a packing seal assembly is arranged between the main shaft 1101 and the turbine 11, and the packing seal assembly includes a packing body 1102 and a gland 1103; it also includes a moving rod 12, a first guide mechanism 2, a first detection mechanism 3, a rotating mechanism 6 and a second detection mechanism 8;

[0035] The moving rod 12 is arranged on the side wall of the bracket 1, and a ball 13 is arranged at one end of the moving rod 12 close to the main shaft 1101; the top of the turbine 11 is rotatably connected to a rotating rod 14, and the bottom of the rotating rod 14 is fixedly connected to a push rod 15, and the lower end of the push rod 15 abuts against the top of the pressure cover 1103;

[0036] The first guide mechanism 2 is arranged on the side wall of the bracket 1 and is used to connect the moving rod 12 and the bracket 1;

[0037] The first detection mechanism 3 is arranged on the side wall of the bracket 1, and is used to detect the movement of the moving rod 12;

[0038] The rotating mechanism 6 is arranged at the top of the water turbine 11 and is used to rotate the rotating rod 14;

[0039] The second detection mechanism 8 is disposed on the side wall of the bracket 1 and is used to detect the rotation of the rotating rod 14 .

[0040] like Figure 4 As shown, the first guiding mechanism 2 includes two symmetrically arranged T-shaped guide rods 201 fixedly connected to the side wall of the bracket 1, and the side wall of the T-shaped guide rod 201 is sleeved with a first slider 202. The first slider 202 is fixed to the side wall of the moving rod 12, and can monitor the rotation state of the main shaft 1101 and the wear state of the filler body 1102 to ensure the normal operation of the turbine 11, and further ensure the operation effect of the pumped storage power station unit.

[0041] like Figure 4 As shown, the first detection mechanism 3 includes a U-shaped frame 303 fixedly connected to the side wall of the bracket 1, and the side wall of the U-shaped frame 303 is fixedly inserted with a distance sensor 304. The side wall of the bracket 1 is connected to a rotating plate 301 through a rotating component 4, and the side wall of the rotating plate 301 is fixedly connected to a first sensing block 302.

[0042] When the turbine 11 is working, the main shaft 1101 rotates. At the same time, the ball 13 abuts against the side wall of the main shaft 1101 and rolls on it. When the rotation of the main shaft 1101 jumps, the moving rod 12 will move toward the bracket 1 or away from the bracket 1. When the moving rod 12 moves toward the bracket 1, the rotating plate 301 will rotate clockwise along the rotating component 4. When the moving rod 12 moves away from the bracket 1, the rotating plate 301 can rotate counterclockwise along the rotating component 4. The distance to the first sensing block 302 is detected by the distance sensor 304, so as to determine whether the jump of the main shaft 1101 exceeds the required range, thereby being able to monitor the rotation state of the main shaft 1101.

[0043] like Figure 6 As shown, the rotating assembly 4 includes two symmetrically arranged fixed plates 401 fixedly connected to the side walls of the bracket 1; the rotating plate 301 is rotatably connected to the side wall of the fixed plate 401 through a first rotating shaft 402, and the side wall fixed sleeve of the first rotating shaft 402 is provided with a first gear 403, and the side wall of the fixed plate 401 is connected to a first rack 404 through a first reset mechanism 5. When the first rotating shaft 402 rotates, the first rack 404 is driven to move.

[0044] The first reset mechanism 5 includes a first support block 501 fixedly connected to the side wall of the fixed plate 401, and the side wall of the first support block 501 is fixedly connected to two symmetrically arranged first guide rods 502; the side wall of the first guide rod 502 is sleeved with two symmetrically arranged second sliders 503, and the side wall of the first guide rod 502 is also sleeved with a first spring 504; the second slider 503 is fixed to the side wall of the first rack 404, and the first rack 404 is meshingly arranged with the first gear 403, so as to guide and reset the movement of the first rack 404.

[0045] like Figure 5 As shown, the rotating mechanism 6 includes two symmetrically arranged support plates 601 fixedly connected to the top of the turbine 11, and the rotating rod 14 is rotatably connected to the side wall of the support plate 601 through the second rotating shaft 602; the side wall of the second rotating shaft 602 is fixedly sleeved with a second gear 603; the side wall of the support plate 601 is connected to a second rack 604 through a second reset mechanism 7; the second rack 604 is meshed with the second gear 603, and when the rotating rod 14 rotates, it drives the second gear 603 to rotate synchronously, and the second rack 604 moves on the second reset mechanism 7.

[0046] The second reset mechanism 7 includes two symmetrically arranged second support blocks 701 fixedly connected to the side walls of the support plate 601, and the side walls of the second support blocks 701 are fixedly connected to two symmetrically arranged second guide rods 702; the side walls of the second guide rods 702 are sleeved with a third slider 703, and the third slider 703 is fixed to the side walls of the second rack 604; the side walls of the second guide rods 702 are sleeved with a second spring 704, and the second spring 704 is in a compressed state to ensure that the top rod 15 is against the top of the pressure cover 1103, thereby guiding and resetting the movement of the second rack 604.

[0047] like Figure 7 As shown, the second detection mechanism 8 includes a moving plate 801 , the upper end of which is fixedly connected to a second sensing block 802 ; the moving plate 801 is connected to the side wall of the bracket 1 through a second guiding mechanism 9 ; a connecting mechanism 10 is provided between the moving plate 801 and the rotating rod 14 .

[0048] When the turbine 11 is working, the second spring 704 makes the push rod 15 abut against the top of the pressure cover 1103. When the packing body 1102 is gradually worn, the pressure cover 1103 will move downward. At this time, the push rod 15 slides on the top of the pressure cover 1103. At the same time, the rotating rod 14 can rotate upward along the second rotating shaft 602. When the rotating rod 14 rotates upward, the movable plate 801 and the second sensing block 802 are pushed upward through the connecting mechanism 10. When the packing body 1102 is more seriously worn, the pressure cover 1103 moves downward a greater distance, so that the second sensing block 802 moves upward a greater distance. At this time, when the distance sensor 304 detects the second sensing block 802, it indicates that the packing body 1102 is seriously worn. At this time, an alarm is issued to remind the operator to repair and replace it, so that the wear state of the packing body 1102 can be monitored.

[0049] The second guiding mechanism 9 includes two symmetrically arranged connecting plates 901 fixedly connected to the side walls of the bracket 1, and a fixing rod 902 is fixedly connected to the top of the connecting plate 901; the side wall of the fixing rod 902 is sleeved with a fourth slider 903, and the fourth slider 903 is fixed to the side wall of the movable plate 801, so as to guide and limit the movement of the movable plate 801.

[0050] The connecting mechanism 10 includes an avoidance groove 1005 opened on the side wall of the rotating plate 301, and the rotating rod 14 is inserted in the avoidance groove 1005; the other end of the rotating plate 301 is fixedly connected to the fixed block 1001, and the side wall of the fixed block 1001 is rotatably connected to the connecting rod 1003 through the first rotating pin 1002; the other end of the connecting rod 1003 is rotatably connected to the side wall of the movable plate 801 through the second rotating pin 1004. When the rotating rod 14 rotates upward, the connecting rod 1003 rotates and pushes the movable plate 801 and the second sensing block 802 to move upward.

[0051] Working principle:

[0052] When the water turbine 11 is working, the main shaft 1101 rotates. At the same time, under the action of the first spring 504, the ball 13 abuts against the side wall of the main shaft 1101 and rolls thereon. When the rotation of the main shaft 1101 jumps, the moving rod 12 moves toward the bracket 1 or away from the bracket 1. When the moving rod 12 moves toward the bracket 1, the rotating plate 301 rotates clockwise along the first rotating shaft 402. When the moving rod 12 moves away from the bracket 1, the rotating plate 301 can rotate counterclockwise along the first rotating shaft 402. The distance sensor 304 can detect the distance to the first sensing block 302 to determine whether the jump of the main shaft 1101 exceeds the required range, so that the rotation state of the main shaft 1101 can be monitored to ensure the normal operation of the water turbine 11.

[0053] At the same time, when the turbine 11 is working, the second spring 704 makes the top rod 15 abut against the top of the pressure cover 1103. When the packing body 1102 is gradually worn, the pressure cover 1103 will move downward. At this time, the top rod 15 slides on the top of the pressure cover 1103. At the same time, the rotating rod 14 can rotate upward along the second rotating shaft 602. When the rotating rod 14 rotates upward, the connecting rod 1003 rotates and pushes the movable plate 801 and the second sensing block 802 to move upward. When the packing body 1102 is more seriously worn, the pressure cover 1103 moves downward, which makes the second sensing block 802 move upward. At this time, when the distance sensor 304 detects the second sensing block 802, it means that the wear of the packing body 1102 is more serious. At this time, an alarm is issued to remind the operator to repair and replace it, so that the wear state of the packing body 1102 can be monitored to ensure the normal operation of the turbine 11.

Claims

1. A monitoring device for a pumped storage power station unit, comprising a turbine (11) mounted on a bracket (1) and comprising a main shaft (1101), a packing seal assembly being arranged between the main shaft (1101) and the turbine (11), the packing seal assembly comprising a packing body (1102) and a gland (1103), characterized in that: It also includes a moving rod (12), a first guiding mechanism (2), a first detecting mechanism (3), a rotating mechanism (6) and a second detecting mechanism (8); The moving rod (12) is arranged on the side wall of the bracket (1), and a ball (13) is arranged at one end of the moving rod (12) close to the main shaft (1101); the top of the water turbine (11) is rotatably connected to a rotating rod (14), the bottom of the rotating rod (14) is fixedly connected to a push rod (15), and the lower end of the push rod (15) is in contact with the top of the pressure cover (1103); The first guiding mechanism (2) is arranged on the side wall of the bracket (1) and is used to connect the moving rod (12) and the bracket (1); The first detection mechanism (3) is arranged on the side wall of the bracket (1) and is used to detect the movement of the moving rod (12); The rotating mechanism (6) is arranged on the top of the water turbine (11) and is used to rotate the rotating rod (14); The second detection mechanism (8) is arranged on the side wall of the bracket (1) and is used to detect the rotation of the rotating rod (14).

2. A pumped storage power station unit monitoring device according to claim 1, characterized in that: The first guiding mechanism (2) comprises two symmetrically arranged T-shaped guide rods (201) fixedly connected to the side wall of the bracket (1), the side wall of the T-shaped guide rod (201) being sleeved with a first sliding block (202), and the first sliding block (202) being fixed to the side wall of the moving rod (12).

3. A pumped storage power station unit monitoring device according to claim 1, characterized in that: The first detection mechanism (3) comprises a U-shaped frame (303) fixedly connected to the side wall of the bracket (1), the side wall of the U-shaped frame (303) being fixedly inserted with a distance sensor (304), the side wall of the bracket (1) being connected to a rotating plate (301) via a rotating assembly (4), and the side wall of the rotating plate (301) being fixedly connected to a first sensing block (302).

4. A pumped storage power station unit monitoring device according to claim 3, characterized in that: The rotating assembly (4) comprises two symmetrically arranged fixed plates (401) fixedly connected to the side walls of the bracket (1); the rotating plate (301) is rotatably connected to the side wall of the fixed plate (401) via a first rotating shaft (402); a first gear (403) is fixedly sleeved on the side wall of the first rotating shaft (402); and the side wall of the fixed plate (401) is connected to a first rack (404) via a first reset mechanism (5).

5. A monitoring device for a pumped storage power station unit according to claim 4, characterized in that: The first reset mechanism (5) comprises a first support block (501) fixedly connected to the side wall of the fixed plate (401); the side wall of the first support block (501) is fixedly connected to two symmetrically arranged first guide rods (502); the side wall of the first guide rod (502) is sleeved with two symmetrically arranged second sliders (503); the side wall of the first guide rod (502) is also sleeved with a first spring (504); the second slider (503) is fixed to the side wall of the first rack (404), and the first rack (404) is meshed with the first gear (403).

6. A monitoring device for a pumped storage power station unit according to claim 1, characterized in that: The rotating mechanism (6) comprises two symmetrically arranged support plates (601) fixedly connected to the top of the water turbine (11); the rotating rod (14) is rotatably connected to the side wall of the support plate (601) via a second rotating shaft (602); a second gear (603) is fixedly sleeved on the side wall of the second rotating shaft (602); the side wall of the support plate (601) is connected to a second rack (604) via a second reset mechanism (7); and the second rack (604) is meshed with the second gear (603).

7. A pumped storage power station unit monitoring device according to claim 6, characterized in that: The second reset mechanism (7) comprises two symmetrically arranged second support blocks (701) fixedly connected to the side walls of the support plate (601); the side walls of the second support blocks (701) are fixedly connected to two symmetrically arranged second guide rods (702); the side walls of the second guide rods (702) are sleeved with a third slider (703), and the third slider (703) is fixed to the side walls of the second rack (604); and the side walls of the second guide rods (702) are sleeved with a second spring (704).

8. A monitoring device for a pumped storage power station unit according to claim 3, characterized in that: The second detection mechanism (8) comprises a movable plate (801), the upper end of which is fixedly connected to a second sensing block (802); the movable plate (801) is connected to the side wall of the bracket (1) via a second guiding mechanism (9); and a connecting mechanism (10) is provided between the movable plate (801) and the rotating rod (14).

9. A pumped storage power station unit monitoring device according to claim 8, characterized in that: The second guiding mechanism (9) comprises two symmetrically arranged connecting plates (901) fixedly connected to the side walls of the bracket (1), and a fixing rod (902) is fixedly connected to the top of the connecting plate (901); a fourth sliding block (903) is sleeved on the side wall of the fixing rod (902), and the fourth sliding block (903) is fixed to the side wall of the movable plate (801).

10. A monitoring device for a pumped storage power station unit according to claim 8, characterized in that: The connection mechanism (10) comprises an avoidance groove (1005) provided on the side wall of the rotating plate (301), and the rotating rod (14) is inserted into the avoidance groove (1005); the other end of the rotating plate (301) is fixedly connected to a fixed block (1001), and the side wall of the fixed block (1001) is rotatably connected to a connecting rod (1003) via a first rotating pin (1002); the other end of the connecting rod (1003) is rotatably connected to the side wall of the movable plate (801) via a second rotating pin (1004).

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