Relay protection device for speed regulator of hydroelectric power station

Abstract

The utility model relates to the field of speed regulators, in particular to a hydroelectric power station speed regulator relay protection device which comprises a protection box and a damping mechanism, and the damping mechanism is composed of a fixing plate, a first spring, a silica gel pad, a second spring, a base plate, a connecting block, a fixing block, a moving block, an upper threaded rod, a rotating block, a connecting plate and a speed regulator body. Fixing plates are connected to the left end and the right end in the protection box, a speed regulator body is arranged in the protection box, and two first springs are connected to the ends, close to the speed regulator body, of the fixing plates; by arranging a damping mechanism, a rotating threaded rod rotates forwards on a connecting plate, a moving block is pushed to move backwards to fix a connecting block and a speed regulator body, a second spring and a damper at the bottom of a base plate buffer vertical vibration, and a first spring and a silica gel pad assist in clamping the speed regulator body; the problems that the hydroelectric power station governor relay protection device has no effective damping design, and internal electronic elements are easy to loosen or damage in a vibration environment are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of speed regulator, especially relates to water conservancy power station speed regulator relay protection device. BACKGROUND

[0002] The water conservancy power station speed regulator usually adopts advanced electronic hydraulic or full digital control system, combines high-precision sensor and intelligent algorithm, can adjust the guide vane opening of water turbine in real time accurately, in order to respond to the change of power grid frequency and maintain stable output, these systems usually have fast response ability, high automation and remote monitoring function, support multiple protection mechanisms.

[0003] The water conservancy power station speed regulator relay protection device does not have effective shock absorption design, and the internal electronic components are easy to loosen or damage in the vibration environment, which not only may cause the speed regulation accuracy to decline and the control to fail, but also may shorten the service life of the equipment, increase the maintenance cost and affect the safe and stable operation of the power station.

[0004] Therefore, in view of the problem that the water conservancy power station speed regulator relay protection device does not have effective shock absorption design, and the internal electronic components are easy to loosen or damage in the vibration environment, which may cause the speed regulation accuracy to decline and the control to fail, and increase the maintenance cost and affect the safe and stable operation of the power station, the water conservancy power station speed regulator relay protection device can be designed to set multiple springs to realize the effect of shock absorption. CONTENT OF THE UTILITY MODEL

[0005] In order to overcome the problem that the water conservancy power station speed regulator relay protection device does not have effective shock absorption design, and the internal electronic components are easy to loosen or damage in the vibration environment, which may cause the speed regulation accuracy to decline and the control to fail, and increase the maintenance cost and affect the safe and stable operation of the power station.

[0006] The technical scheme of the utility model is: a water conservancy power station speed regulator relay protection device, comprising a protective box, further comprising a shock absorption mechanism, the shock absorption mechanism is composed of a fixed plate, a spring one, a silica gel pad, a spring two, a pad plate, a connecting block, a fixed block, a moving block, an upper threaded rod, a rotating block, a connecting plate, a damping and a speed regulator body, the left and right ends of the inside of the protective box are respectively connected with the fixed plate, the inside of the protective box is provided with the speed regulator body, the end close to the speed regulator body of the fixed plate is connected with two spring ones, the end close to the speed regulator body of the spring one is connected with the silica gel pad, the bottom end of the inside of the protective box is connected with four spring twos at equal intervals, the top of the spring two is connected with the pad plate, the bottom of the pad plate is connected with the damping, the damping is connected with the protective box, the top rear position of the pad plate is connected with the fixed block, the bottom of the speed regulator body is connected with the connecting block, the connecting block is movably connected with the fixed block, the front end of the connecting block is movably connected with the moving block, the front end of the moving block is rotatably connected with the threaded rod, the front end of the threaded rod is connected with the rotating block, the top front position of the pad plate is connected with the connecting plate, the connecting plate is screwedly connected with the threaded rod, and the moving block is slidably connected with the pad plate.

[0007] Preferably, by setting a shock-absorbing mechanism, rotating the rotating block drives the threaded rod to rotate. The threaded rod rotates forward on the connecting plate, pushing the moving block to move backward to fix the connecting block and the speed governor body. The second spring and damping at the bottom of the pad buffer the vertical vibration, and the first spring and silicone pad assist in clamping the speed governor body. This solves the problem that the relay protection device of the speed governor in the hydropower station does not have an effective shock-absorbing design. Under vibration environment, the internal electronic components are prone to loosening or damage, which may lead to a decrease in speed regulation accuracy and control failure, increase maintenance costs and affect the safe and stable operation of the power station.

[0008] Preferably, a drying box is connected to the upper inside of the protective box, the bottom of the drying box has multiple ventilation holes, and a cover plate is movably connected to the top of the protective box.

[0009] Preferably, the top of the cover is connected to two handles, and the bottom of the cover is connected to a sealing strip.

[0010] Preferably, the top of the protective box has a groove corresponding to the sealing strip position, and the front end of the protective box is movably connected to a lid.

[0011] Preferably, the rear end of the lid is connected to a rubber strip, and the front end of the lid is connected to a handle.

[0012] Preferably, the rear end of the speed controller body has five equally spaced wiring ports, and a silicone ring is connected to the rear end of the protective box at the corresponding wiring port position.

[0013] Preferably, mounting plates are connected to the rear positions of the left and right ends of the protective box, and the front end of the mounting plates has three mounting holes at equal intervals.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting up a shock-absorbing mechanism, rotating the rotating block drives the threaded rod to rotate. The threaded rod rotates forward on the connecting plate, pushing the moving block to move backward to fix the connecting block and the speed governor body. The second spring and damping at the bottom of the pad plate buffer the up and down vibration, and the first spring and silicone pad assist in clamping the speed governor body. This solves the problem that the relay protection device of the speed governor in the hydropower station does not have an effective shock-absorbing design. Under vibration environment, the internal electronic components are prone to loosening or damage, which may lead to a decrease in speed regulation accuracy and control failure, increase maintenance costs and affect the safe and stable operation of the power station. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the relay protection device for the speed governor of a hydroelectric power station according to this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional front cross-sectional view of the relay protection device for the speed governor of a hydropower station according to this utility model.

[0018] Figure 3 The utility model discloses a water conservancy power station governor relay protection device three -dimensional side section structure schematic diagram is shown.

[0019] Figure 4 The utility model discloses a water conservancy power station governor relay protection device three -dimensional upper section structure schematic diagram is shown.

[0020] The utility model discloses a water conservancy power station governor relay protection device three -dimensional side section structure schematic diagram is shown. Specific embodiments

[0021] The utility model further is explained below with the drawings and examples.

[0022] Please refer to Figures 1-4The utility model provides a kind of embodiment: water conservancy power station governor relay protection device includes protection box 1, still including damping mechanism, damping mechanism is by fixed plate 21, spring one 22, silica gel pad 23, spring two 24, backing plate 25, connecting block 26, fixed block 27, moving block 28, upper threaded rod 29, rotating block 210, connecting plate 211, damping 212 and governor body 41 are formed, the inside left and right ends of protection box 1 are connected with fixed plate 21 respectively, the inside of protection box 1 is provided with governor body 41, and the end close to governor body 41 of fixed plate 21 is connected with two spring one 22, and the end close to governor body 41 of spring one 22 is connected with silica gel pad 23, and the inside bottom end of protection box 1 is connected with four spring two 24 with equal interval, and the top of spring two 24 is connected with backing plate 25, and the bottom of backing plate 25 is connected with damping 212, and damping 212 is connected with protection box 1, and the top rear position of backing plate 25 is connected with fixed block 27, and the bottom of governor body 41 is connected with connecting block 26, and connecting block 26 is movably connected with fixed block 27, and the front end of connecting block 26 is movably connected with moving block 28, and the front end of moving block 28 is rotatably connected with threaded rod 29, and the front end of threaded rod 29 is connected with rotating block 210, and the top front position of backing plate 25 is connected with connecting plate 211, and connecting plate 211 is threadedly connected with threaded rod 29, and moving block 28 is slidably connected with backing plate 25, by being provided with damping mechanism, rotating rotating block 210 drives threaded rod 29 to rotate, threaded rod 29 rotates forward on connecting plate 211, and moving block 28 is pushed to move backward, so that connecting block 26 and governor body 41 are fixed, and spring two 24 and damping 212 at the bottom of backing plate 25 buffer up and down vibration, and spring one 22 and silica gel pad 23 assist clamping governor body 41, to solve the problem that water conservancy power station governor relay protection device does not have effective damping design, and internal electronic components are prone to looseness or damage in vibration environment, possibly leading to speed regulation precision decline and control failure, increase maintenance cost and affect the safe and stable operation of power station.

[0023] Please refer to Figures 1-3 In the embodiment, the inside upper side of protection box 1 is connected with drying box 31, a plurality of air holes 32 are formed in the bottom of drying box 31, the top of cover plate 33 is movably connected with protection box 1, the top of cover plate 33 is connected with two handles 34, the bottom of cover plate 33 is connected with sealing strip 36, the top of protection box 1 is provided with recess 35 corresponding to the position of sealing strip 36, and the front end of protection box 1 is movably connected with box cover 37, handle 34 is pulled to open cover plate 33, drying agent is poured into drying box 31, moisture in protection box 1 is absorbed through air hole 32, and sealing property of protection box 1 is increased by sealing strip 36 and rubber strip 38.

[0024] Please refer to Figures 1-4In the embodiment, the rear end of the box cover 37 is connected with a rubber strip 38, the front end of the box cover 37 is connected with a handle 39, the rear end of the speed regulator body 41 is provided with five wire connection ports 42 at equal intervals, the rear end of the protective box 1 is connected with a silica gel ring 43 at a position corresponding to the wire connection port 42, the left and right ends of the protective box 1 are respectively connected with mounting plates 44 at rear positions, the front end of each mounting plate 44 is provided with three mounting holes 45 at equal intervals, and the wire is inserted into the wire connection port 42 from the silica gel ring 43.

[0025] In operation, the handle 39 is pulled to open the box cover 37, the speed regulator body 41 is placed into the protective box 1, the connecting block 26 is placed between the fixed block 27 and the moving block 28, the rotating block 210 is rotated to drive the threaded rod 29 to rotate, the threaded rod 29 rotates forward on the connecting plate 211 to push the moving block 28 to move backward to fix the connecting block 26 and the speed regulator body 41, the spring two 24 at the bottom of the backing plate 25 and the damping 212 buffer the up-and-down vibration, the spring one 22 and the silica gel pad 23 assist in clamping the speed regulator body 41, the wire is inserted into the wire connection port 42 from the silica gel ring 43, the lifting handle 34 is pulled to open the cover plate 33, the drying agent is poured into the drying box 31, the moisture in the protective box 1 is absorbed through the air hole 32, and the sealing strip 36 and the rubber strip 38 increase the sealing property of the protective box 1, and then the mounting plate 44 is mounted at the desired position through external bolts.

[0026] Through the above steps, the rotating block 210 is rotated to drive the threaded rod 29 to rotate, the threaded rod 29 rotates forward on the connecting plate 211 to push the moving block 28 to move backward to fix the connecting block 26 and the speed regulator body 41, the spring two 24 at the bottom of the backing plate 25 and the damping 212 buffer the up-and-down vibration, the spring one 22 and the silica gel pad 23 assist in clamping the speed regulator body 41, so as to solve the problem that the speed regulator relay protection device of a water power station has no effective shock absorption design, the internal electronic components are easy to loosen or be damaged in a vibrating environment, the speed regulation accuracy may be reduced and the control may be out of order, the maintenance cost is increased, and the safe and stable operation of the power station is affected.

Claims

1. A speed regulator relay protection device for a hydroelectric power station, comprising a protective box (1); characterized in that: The shock-absorbing mechanism is composed of a fixed plate (21), a spring (22), a silica gel pad (23), a spring (24), a pad plate (25), a connecting block (26), a fixed block (27), a moving block (28), a threaded rod (29), a rotating block (210), a connecting plate (211), a damper (212) and a speed regulator body (41). The inside of the protective box (1) is connected with the fixed plate (21) at the left and right ends. The inside of the protective box (1) is provided with the speed regulator body (41). The end of the fixed plate (21) close to the speed regulator body (41) is connected with two springs (22). The end of the spring (22) close to the speed regulator body (41) is connected with the silica gel pad (23). The bottom end of the protective box (1) is connected with four springs (24) at equal intervals. The top of the spring (24) is connected with the pad plate (25). The bottom of the pad plate (25) is connected with the damper (212). The damper (212) is connected with the protective box (1). The top of the pad plate (25) is connected with the fixed block (27) at the rear position. The bottom of the speed regulator body (41) is connected with the connecting block (26). The connecting block (26) is movably connected with the fixed block (27). The front end of the connecting block (26) is movably connected with the moving block (28). The front end of the moving block (28) is rotatably connected with the threaded rod (29). The front end of the threaded rod (29) is connected with the rotating block (210). The top of the pad plate (25) is connected with the connecting plate (211) at the front position. The connecting plate (211) is threadedly connected with the threaded rod (29). The moving block (28) is slidably connected with the pad plate (25).

2. The hydroelectric power plant governor relay protection device according to claim 1, characterized in that: The inside of the protective box (1) is connected with the drying box (31) on the upper side. The bottom of the drying box (31) is provided with a plurality of air holes (32). The top of the protective box (1) is movably connected with the cover plate (33).

3. The hydroelectric power plant governor relay protection device according to claim 2, characterized in that: The top of the cover plate (33) is connected with two handles (34). The bottom of the cover plate (33) is connected with the sealing strip (36).

4. The hydroelectric power plant governor relay protection device according to claim 3, characterized in that: The top of the protective box (1) is provided with the groove (35) corresponding to the position of the sealing strip (36). The front end of the protective box (1) is movably connected with the box cover (37).

5. The hydroelectric power plant governor relay protection device according to claim 4, characterized in that: The rear end of the box cover (37) is connected with the rubber strip (38). The front end of the box cover (37) is connected with the handle (39).

6. The hydroelectric power plant governor relay protection device of claim 1, wherein: The rear end of the speed regulator body (41) is provided with five wire ports (42) at equal intervals. The rear end of the protective box (1) is connected with the silica gel ring (43) corresponding to the position of the wire port (42).

7. The hydroelectric power plant governor relay protection device according to claim 6, characterized in that: The left and right ends of the protective box (1) are connected with the mounting plate (44) at the rear position. The front end of the mounting plate (44) is provided with three mounting holes (45) at equal intervals.

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