Hydropower station radial gate device with opening degree measurement function

Abstract

The hydropower station radial gate device comprises an arc-shaped baffle, a swing arm is arranged on the inner side of the arc-shaped baffle, one end of the swing arm is hinged to a swing mounting base on a radial gate mounting base, the outer side of the arc-shaped baffle is an upstream face, a linear driving cylinder is further arranged, one end of the linear driving cylinder is hinged to a driving cylinder mounting base, and the other end of the linear driving cylinder is hinged to a hydraulic cylinder. The swing arm is provided with an inclination angle detection device, the inclination angle detection device comprises a connecting seat and a protective cylinder, the connecting seat is connected with the swing arm, an inclination angle sensor is arranged in the protective cylinder, the angle of the protective cylinder relative to the connecting seat is adjustable, and the problem of opening degree detection of the flood discharge arc gate of the hydropower station is solved.

Description

Technical Field

[0001] The utility model relates to the field of hydropower stations, and particularly relates to a hydropower station radial gate device with opening measurement. Background Art

[0002] The flood discharge equipment and facilities of the dam body of a hydropower station adopt a radial gate structure layout. The accuracy of the radial gate opening is related to the magnitude of the discharged flow, which is of great significance for flood control. Currently, all the flood discharge equipment of hydropower stations adopts a radial gate structure. The traditional radial gate opening sensor is generally installed on the radial gate. During flood discharge, due to the large amount of water, strong scouring force, and large vibration of the radial gate, the closer the sensor is to the radial gate, the more easily it is damaged by vibration and scouring. And it is difficult to repair and replace the sensor during the flood discharge process, resulting in the uncontrollability of the radial gate opening during this stage. Content of the Utility Model

[0003] The utility model provides a hydropower station radial gate device with opening measurement, which solves the problem of detecting the opening of the flood discharge radial gate of a hydropower station.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: a hydropower station radial gate device with opening measurement, including an arc-shaped baffle. A swing arm is arranged inside the arc-shaped baffle. One end of the swing arm is hinged to a swing mounting seat on the radial gate installation foundation. The outer side of the arc-shaped baffle is the water-facing surface. A linear drive cylinder is also provided. One end of the linear drive cylinder is hinged to the drive cylinder installation foundation, and the other end of the linear drive cylinder is hinged to the inner side of the arc-shaped baffle. An inclination detection device is arranged on the swing arm. The inclination detection device includes a connection seat and a protective cylinder. The connection seat is connected to the swing arm. An inclination sensor is arranged inside the protective cylinder, and the angle of the protective cylinder relative to the connection seat is adjustable.

[0005] In a preferred solution, vertical plates are arranged at both ends of the connection seat. Slots with one end open are arranged on the vertical plates. Screw shafts are arranged at both ends of the protective cylinder, and the screw shafts are inserted into the slots. Locking nuts are sleeved on the screw shafts and are threadedly connected. One end of the locking nut abuts against the vertical plate.

[0006] In a preferred solution, end caps are arranged at both ends of the protective cylinder. A support plate part is arranged on one side of the end cap. The inclination sensor is connected to the support plate part, and the screw shaft is arranged on the other side of the end cap.

[0007] In a preferred solution, an insulating backing plate is further arranged between the inclination sensor and the support plate part.

[0008] In a preferred solution, connection lugs are further arranged at both ends of the arc-shaped baffle. Hanging seats are also arranged on both sides of the linear drive cylinder on the drive cylinder installation foundation. At least two cable stays are further provided. One end of each cable stay is connected to the connection lug, and the other end of each cable stay bypasses the hanging seat and is provided with a hanging tension weight. The hanging seat is provided with a vertical side plate. A rotatable winding shaft is arranged on the vertical side plate. A spiral groove is arranged on the winding shaft. Each cable stay bypasses the winding shaft along the spiral groove, and an encoder is arranged at one end of the spiral groove.

[0009] In a preferred embodiment, the tension counterweight includes a suspension rod. A suspension ring for connecting with a stay cable is provided at the upper end of the suspension rod, a tray is provided at the lower end of the suspension rod, and at least one counterweight block is sleeved on the suspension rod.

[0010] The beneficial effects of the present utility model are as follows: The inclination sensor is arranged at the root of the swing arm far away from the arc gate, with less vibration and less water flow impact force. And the inclination sensor is wrapped by a casing to prevent it from being directly impacted and soaked, reducing the damage probability of the inclination sensor; A hanging point is arranged on the arc-shaped baffle, and the displacement of the arc gate is converted into an angular value by a stay cable and a winding shaft and recorded by an encoder, so as to monitor the opening degree of the arc-shaped baffle. It forms a complement to the swing arm angle monitoring in the detection method. Even if one of the detection methods fails, the opening degree can still be monitored by the other method, with high reliability. Description of the Drawings

[0011] The present utility model will be further described below with reference to the drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of the present utility model.

[0013] Figure 2 It is a schematic diagram of the inner side of the arc-shaped baffle of the present utility model.

[0014] Figure 3 It is a structural diagram of the inclination detection device of the present utility model.

[0015] Figure 4 It is an internal view of the inclination detection device of the present utility model.

[0016] Figure 5 It is a structural diagram of the casing of the present utility model.

[0017] Figure 6 It is a structural diagram of the winding shaft of the present utility model.

[0018] Figure 7 It is a schematic diagram of the tension counterweight of the present utility model.

[0019] In the figures: swing arm 1; arc-shaped baffle 2; arc-shaped guide bar 201; hinge ear 202; connecting ear seat 203; reinforcing rib 204; swing mounting seat 3; linear drive cylinder 4; stay cable 5; tension counterweight 6; tray 601; suspension rod 602; suspension ring 603; counterweight block 604; hanging seat 7; vertical edge plate 701; winding shaft 702; spiral groove 703; encoder 704; inclination detection device 8; connecting seat 801; casing 802; end cover 803; screw shaft 804; support plate part 805; insulating backing plate 806; inclination sensor 807; locking nut 808; slot 809; vertical plate 810; annular groove 811; arc gate installation base 9; arc-shaped guide groove 901; drive cylinder installation base 10. Detailed Embodiments

[0020] As shown in Figures 1-7 In the figure, a radial gate device for a hydropower station with opening measurement includes an arc-shaped baffle 2. A swing arm 1 is arranged inside the arc-shaped baffle 2. One end of the swing arm 1 is hinged to a swing mounting seat 3 on the gate installation foundation 9. The outer side of the arc-shaped baffle 2 is the water-facing surface. A linear drive cylinder 4 is also provided. One end of the linear drive cylinder 4 is hinged to a drive cylinder installation foundation 10, and the other end of the linear drive cylinder 4 is hinged to the inner side of the arc-shaped baffle 2. An inclination detection device 8 is arranged on the swing arm 1. The inclination detection device 8 includes a connection seat 801 and a protective cylinder 802. The connection seat 801 is connected to the swing arm 1. An inclination sensor 807 is arranged inside the protective cylinder 802, and the angle of the protective cylinder 802 relative to the connection seat 801 is adjustable.

[0021] In a preferred solution, vertical plates 810 are provided at both ends of the connection seat 801. Slots 809 with one end open are provided on the vertical plates 810. Screw shafts 804 are provided at both ends of the protective cylinder 802. The screw shafts 804 are inserted into the slots 809. Locking nuts 808 connected by threads are sleeved on the screw shafts 804, and one end of the locking nut 808 abuts against the vertical plate 810.

[0022] In a preferred solution, end caps 803 are provided at both ends of the protective cylinder 802. A support plate portion 805 is provided on one side of the end cap 803. The inclination sensor 807 is connected to the support plate portion 805, and the screw shaft 804 is arranged on the other side of the end cap 803.

[0023] For the convenience of manufacturing, the protective cylinder 802 is designed as a central cylindrical structure and end cap structures at both ends. The two ends of the central cylindrical structure are flange structures, and a plurality of annular grooves 811 are machined on the flange structures. Sealing rings are installed in the annular grooves 811. After installing the end caps 803, the end caps 803 and the flange structures of the central cylindrical structure can be fixed by bolts, bonding or welding.

[0024] The screw shaft 804 of the end cap 803 is located at the central axis position of the protective cylinder 802. The screw shaft 804 is inserted into the slot 809 and can rotate. Since the installation conditions of the swing arm 1 are different, after the swing arm 1 is installed and the lower end of the arc-shaped baffle 2 touches the bottom of the water tank, the angle of the protective cylinder 802 is adjusted so that the inclination sensor 807 is at the zero angle position. At this time, the screw shaft 804 is locked to fix the circumferential angle of the protective cylinder 802, which is convenient for subsequent reading.

[0025] The central cylindrical structure can be made of a transparent material to facilitate observing the angle of the inclination sensor 807.

[0026] When the gate is opened, the swing arm 1 can calculate the gate opening according to the reading of the inclination sensor 807.

[0027] In a preferred solution, an insulating gasket 806 is also provided between the inclination sensor 807 and the support plate portion 805.

[0028] The thickness of the insulating backing plate 806 can be determined according to the specifications of the inclination sensor 807, and insulating bakelite can be used as the material, which can isolate electric charges and reduce interference with the inclination sensor 807.

[0029] In a preferred embodiment, connecting lugs 203 are further provided at both ends of the arc-shaped baffle 2. Hanging seats 7 are further provided on both sides of the linear drive cylinder 4 on the drive cylinder mounting base 10. At least two cable pulls 5 are further provided. One end of each cable pull 5 is connected to the connecting lug 203, and the other end of each cable pull 5 bypasses the hanging seat 7 and is provided with a hanging tension weight 6. The hanging seat 7 is provided with a vertical side plate 701, and a rotatable winding shaft 702 is provided on the vertical side plate 701. A spiral groove 703 is provided on the winding shaft 702. Each cable pull 5 bypasses the winding shaft 702 along the spiral groove 703, and an encoder 704 is provided at one end of the spiral groove 703.

[0030] Since the encoder 704 is located at a high place, it is not easily damaged by water erosion and has high reliability.

[0031] The spiral groove 703 can increase the contact area between the cable pull 5 and the winding shaft 702, increase the friction force, and prevent slipping.

[0032] Two hinge ears 202 and two connecting lugs 203 of the arc-shaped baffle 2 are provided on the inner side of the arc-shaped baffle 2, which are arranged in a cross shape. The hinge ear 202 is hinged to the rod end of the linear drive cylinder 4. In order to enhance the compressive capacity of the arc-shaped baffle 2, a plurality of reinforcing ribs 204 can be welded on the inner side of the arc-shaped baffle 2 to reduce the deformation of the arc-shaped baffle 2.

[0033] In a preferred embodiment, the tension weight 6 includes a suspension rod 602. A suspension ring 603 connected to the cable pull 5 is provided at the upper end of the suspension rod 602, a tray 601 is provided at the lower end of the suspension rod 602, and at least one weight block 604 is sleeved on the suspension rod 602.

[0034] The number of the weight blocks 604 can be adjusted to increase the friction force around the winding shaft 702 and prevent slipping. Moreover, even when the cable pull 5 expands and contracts due to heat, the cable pull 5 can be adaptively tensioned to ensure the stable and reliable reading of the encoder 704.

[0035] An arc-shaped guide groove 901 is provided on the arc gate mounting base 9, and arc-shaped guide bars 201 are provided at both ends of the arc-shaped baffle 2. The arc-shaped guide bars 201 are snapped into the arc-shaped guide groove 901.

[0036] When the arc gate is opened, as the arc-shaped baffle 2 is lifted upward, the arc-shaped guide bar 201 slides along the arc-shaped guide groove 901. At the same time, the tension weight 6 descends. Since the cable pull 5 bypasses the winding shaft 702, the winding shaft 702 will rotate and the rotation angle will be recorded by the encoder 704.

[0037] Two different monitoring methods for the opening of the radial gate are adopted, and the monitoring positions are also different, ensuring the reliability of the radial gate opening data. Even if one method fails, the data of the other method can be collected, and there is no need to stop the machine for maintenance immediately.

[0038] The above embodiments are only the preferred technical solutions of the present invention, and should not be regarded as a limitation to the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A hydropower station arc gate device with opening measurement, characterized by: The invention comprises an arc-shaped baffle (2), wherein a swing arm (1) is provided on the inner side of the arc-shaped baffle (2), one end of the swing arm (1) is hinged to a swing mounting seat (3) on an arc door mounting base (9), the outer side of the arc-shaped baffle (2) is a water-facing surface, and a linear drive cylinder (4) is further provided, wherein one end of the linear drive cylinder (4) is hinged to a drive cylinder mounting base (10), and the other end of the linear drive cylinder (4) is hinged to the inner side of the arc-shaped baffle (2), and an inclination detection device (8) is provided on the swing arm (1), and the inclination detection device (8) comprises a connecting seat (801) and a protective tube (802), wherein the connecting seat (801) is connected to the swing arm (1), and an inclination sensor (807) is provided in the protective tube (802), and the angle of the protective tube (802) relative to the connecting seat (801) is adjustable.

2. The hydropower station arc gate device with opening measurement according to claim 1 is characterized in that: Vertical plates (810) are provided at both ends of the connecting seat (801), and a slot (809) with an open end is provided on the vertical plate (810). Screw shafts (804) are provided at both ends of the protective tube (802), and the screw shafts (804) are inserted into the slots (809). A locking nut (808) connected by thread is sleeved on the screw shaft (804), and one end of the locking nut (808) is against the vertical plate (810).

3. The hydropower station arc gate device with opening measurement according to claim 2 is characterized in that: End covers (803) are provided at both ends of the casing (802), a support plate portion (805) is provided on one side of the end cover (803), an inclination sensor (807) is connected to the support plate portion (805), and a screw shaft (804) is provided on the other side of the end cover (803).

4. The hydropower station arc gate device with opening measurement according to claim 3 is characterized in that: An insulating pad (806) is also provided between the inclination sensor (807) and the supporting plate portion (805).

5. The hydropower station arc gate device with opening measurement according to claim 1 is characterized in that: Connecting ear seats (203) are also provided at both ends of the arc-shaped baffle plate (2), and a hanging seat (7) is also provided on both sides of the linear drive cylinder (4) on the drive cylinder mounting base (10). At least two cables (5) are also provided, one end of each cable (5) is connected to the connecting ear seat (203), the other end of each cable (5) passes around the hanging seat (7) and is provided with a suspended tensioning weight (6), the hanging seat (7) is provided with a vertical edge plate (701), a rotatable winding shaft (702) is provided on the vertical edge plate (701), a spiral groove (703) is provided on the winding shaft (702), each cable (5) passes around the winding shaft (702) along the spiral groove (703), and an encoder (704) is provided at one end of the spiral groove (703).

6. The hydropower station arc gate device with opening measurement according to claim 5 is characterized in that: The tensioning counterweight (6) comprises a suspension rod (602), the upper end of the suspension rod (602) is provided with a suspension ring (603) connected to the tension cable (5), the lower end of the suspension rod (602) is provided with a tray (601), and at least one counterweight block (604) is sleeved on the suspension rod (602).

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