Gate system for hydropower station

A technology for hydropower stations and gates, which is applied in the field of gate systems, can solve problems such as dam overturning accidents, unsecured power supply for plants, and unsteady force on gates, etc., to reduce the steel materials used for supports, improve lifting efficiency, and support forces on supports Reduced effect

Inactive Publication Date: 2012-11-07
夏飞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under many accident conditions, the plant power supply may not be guaranteed (for example, in the event of mudslides, earthquakes, fires and other accidents, the entire plant may lose power, and the plant power supply will not be restored), and the gate will lose its power source. If it cannot be opened, it will cause a serious dam overturning accident.
[0007] (2) The energy efficiency of the traditional hydraulic hoist is low, and the gate is subjected to non-constant force, which affects the health of the gate
The hydraulic hoist makes a circular motion with the upper fulcrum of the hinge seat as the center of the circle, and only the tangential moment does useful work in the circular motion, while the hydraulic rod of the hydraulic hoist always has a normal component moment, and this part of the moment will not only Doing work, and will exert a pulling force on the fulcrum of the hinge seat, which will cause fatigue damage to the fulcrum of the hinge seat in the long run

Method used

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  • Gate system for hydropower station
  • Gate system for hydropower station
  • Gate system for hydropower station

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 , figure 2 and image 3 As shown, the present embodiment includes arc-shaped gate 1, transmission device and control circuit. Gate 1 is movable and fixed on supports 3 on both sides of the dam through pull rod 2. With support 3 as the center, gate 1 can be vertically Make circular motion in the plane; the transmission device includes transmission gear 4 and frequency conversion motor 5, transmission gear 4 and frequency conversion motor 5 are linked, and transmission gear 4 cooperates with the rack of gate 1 to realize the opening and closing of gate 1 under normal working conditions .

[0030] The rotating shaft 6 of the transmission gear 4 of this embodiment is provided with a brake device 7, and the brake device 7 is connected in series in the circuit where the variable frequency motor 5 is located. The working principle of the brake device 7 is similar to that of an elevator brake. When charged, the brake device 7 is charged and opened, and the ...

Embodiment 2

[0036] Compared with Embodiment 1, this embodiment increases the control of the frequency conversion motor. In order to make the gate 1 move more smoothly, two racks are provided on the gate 1, and a transmission device is provided on each side of the gate 1. , the gate 1 is opened and closed by driving the transmission devices on both sides. Since the speeds of the variable frequency motors 5 on both sides cannot be 100% consistent, it is necessary to calculate the deviation on both sides of the gate 1 through PLC, and then send commands to the two variable frequency motors 5. Control the rotational speed of the variable frequency motor 5 to eliminate the deviation on both sides of the gate 1 .

[0037] In order to better realize the present invention, an angular displacement sensor is installed on the left and right sides of the gate 1, and then the angular displacement information on the left and right sides of the gate 1 is converted into opening information through an enco...

Embodiment 3

[0039] This embodiment is basically the same as Embodiment 1, the difference is that the cross-sectional shape of the gate 1 is designed to be 1 / 4 circle, and the gate 1 is in a fully closed state such as Figure 4 As shown, the opening of gate 1 under normal conditions is that gate 1 is opened by Figure 4 The position moves clockwise to Image 6 The position shown; and the opening of the gate 1 in an emergency situation is, by Figure 4 The position shown moves counterclockwise to Figure 5 In the position shown, the power in the emergency opening process comes from the gravity of the gate 1 itself. The traditional gate 1 can only be opened by external power in an emergency situation, and when the power is missing, the gate 1 cannot be opened in time, which will bring serious consequences. However, the gate 1 of this embodiment does not need external power when it is opened in an emergency. solved the problem.

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Abstract

The invention discloses a gate system for a hydropower station. The gate system comprises an arc-shaped gate, a driving device and a control circuit, wherein a travel switch and a rack which is used for driving the gate are arranged on the gate; the driving device comprises a driving gear and a variable frequency motor which is in linkage with the driving gear, the driving gear matches with the rack on the gate, and a contracting brake device is arranged on a spindle of the driving gear and serially connected in a circuit where the variable frequency motor is located; and the control circuit comprises an emergency power supply S, a programmable logic controller (PLC) control switch K1 and an accident open button K2, and the emergency power supply S, the PLC control switch K1, the accident open button K2 and the contracting brake device are sequentially connected in series to form a closed circuit. According to the structure, the gate can be opened successfully in case of an emergency through self-gravity, and serious consequences are avoided.

Description

technical field [0001] The invention relates to the field of water conservancy and hydropower engineering, in particular to a gate system applied to a hydropower station. Background technique [0002] With the development of China's economy and society, China has gradually become the world's leading energy-consuming country, and electric energy, as a clean energy, occupies an increasing proportion in the energy consumption pattern. Hydropower is also making strides as one of the cleanest forms of electricity generation. By the end of 2004, the country's developed hydropower installed capacity was 105.17 million kilowatts, with an annual power generation of 328 billion kWh, accounting for 23.8% of the country's total installed power capacity. Especially in recent years, the start of a large number of giant water conservancy and hydropower projects has further highlighted the country's emphasis on hydropower development. As an indispensable part of water conservancy and hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B9/06
CPCY02E10/22Y02E10/20
Inventor 夏飞顾轩
Owner 夏飞
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