CN201155408Y - A device for controlling the runner blades of a water turbine unit - Google Patents

Abstract

The utility model relates to a device for controlling runner paddles of a water turbine unit. It is characterized in that it includes an oil receiver and a blade servomotor, and the blade servomotor is located outside the runner body, fixedly connected with the rotor bracket of the unit, and close to the oil receiver. Due to the miniaturization and externalization of the oil receiver and the blade servomotor, the utility model is supplemented by high-precision processing technology, and a complete collection and oil leakage receiving system, it is ensured that the turbine oil cannot enter the interior of the runner, which improves the efficiency of the turbine. The operation of oil pressure simplifies the structure, greatly reduces the volume, and reduces the cost; it also eradicates the current situation of oil pollution to downstream rivers. Make operation and maintenance very convenient and easy.

Description

A device for controlling the runner blades of a water turbine unit

technical field

The utility model relates to a water turbine unit runner, in particular to a device for controlling the blades of the water turbine unit runner.

Background technique

At present, in the known technology, the axial-flow, tubular-flow and oblique-flow water pumps of rotating paddles-the hydroturbine runner blade servomotors are evenly distributed inside the rotor body of the water pump-hydraulic turbine, and the operation of the blade servomotors The pressure oil must pass through the inner and outer oil pipes of the oil receiver before it enters the A and B oil chambers of the propeller servomotor, so that the piston moves left, right or up and down to operate the opening and closing of the rotor blades , the disadvantages of this known device are: the oil receiver and the root of the rotor blades leak seriously, so that the serious oil pollution of the downstream river is caused; the internal structure of the rotor is huge and complicated, and it is very difficult to maintain in the rotor body , also reduces the flow capacity of the runner. Limit the possibility of using rotary propellers for small and medium-sized units.

Contents of the invention

The utility model provides a device for controlling the runner paddles of a hydraulic turbine unit capable of eradicating the oil leakage from the oil receiver of the hydraulic turbine and the root of the runner paddles to solve the technical problems in the known technology.

The technical scheme adopted by the utility model to solve the technical problems existing in the known technology is: a device for controlling the blades of the runner of the water turbine unit, including an oil receiver and a blade servomotor, and the blade servomotor is located at the The outer part of the runner body is fixedly connected with the rotor bracket of the unit and is close to the oil receiver.

The utility model can also adopt the following technical solutions:

The piston of the oil receiver is connected to one end of the servomotor piston, the other end of the servomotor piston is connected to one end of the power transmission shaft, and the other end of the power transmission shaft is connected to the runner paddle leaf connection.

The piston of the oil receiver is connected with the piston of the blade servomotor through a shock-absorbing connector.

The shock-absorbing connector includes multiple sets of leaf springs.

An oil collecting tank is fixedly connected to the oil receiver, and an oil collecting tank is fixedly connected to the blade servomotor.

The cavities A and B of the oil receiver communicate with the two cavities A and B of the servomotor through internal holes and hoses.

The advantages and positive effects of the utility model are: the working oil pressure of the utility model is increased from the traditional 2.5Mpa-6.3Mpa to 20Mpa, so the size of the oil receiver, blade servomotor and corresponding pipelines can be greatly reduced , due to the miniaturization and externalization of the oil receiver and blade servomotor, supplemented by high-precision processing technology, complete collection and oil leakage receiving system, it is ensured that it is impossible for the turbine oil to enter the interior of the runner, and the operating oil is improved. Pressure, the structure is simplified, the volume is greatly reduced, and the cost is reduced; and the current situation of oil pollution to the downstream rivers is eradicated. Make operation and maintenance very convenient and easy.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the oil receiver of the present invention.

In the figure: 1. Oil receiver, 1-1, Oil receiver housing, 1-2, Oil receiver piston, 1-3, Oil receiver A cavity, 1-4, Oil receiver B cavity, 2, Blade servomotor, 2-1, blade servomotor piston, 2-2, blade servomotor A cavity, 2-3, blade servomotor B cavity, 3, power transmission shaft, 4, shock absorbing connector, 5, 6, hoses, 7, 8, oil collection tank.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to Fig. 1 and Fig. 2, the oil receiver 1 of the utility model is very small in size, and is composed of a housing 1-1 and a piston 1-2. The housing 1-1 is fixed on the front bracket or the upper bracket of the motor. The oiler piston 1-2 is connected with the blade servomotor piston 2-1 through the shock-absorbing connector 4, and moves synchronously therewith. The pressure oil from the two cavities 1-3, 1-4 of the oil receiver A, B goes directly to the two cavities 2-2 of the propeller servomotor A, B through the internal groove of the oil receiver piston 1-2, the hose 5, 6 , 2-3. The oil receiver 1 is fixedly connected with an oil collecting tank 8 , and the blade servomotor 2 is fixedly connected with an oil collecting tank 7 .

The shock-absorbing connector 4 can transmit the pressure oil, and can alleviate the threat to the safe operation of the oil receiver 1 caused by the strong jumping of the main shaft of the unit.

The blade servomotor 2 is installed on the rotor bracket of the generator, and is fixedly installed as a whole with the rotor of the electric motor and the generator, and rotates together. The piston 2-1 of the blade servomotor is connected to the power transmission shaft 3, and the power transmission shaft 3 is connected to the blade of the runner. , the angle of the runner blade needs to be changed accordingly, and this change is completed by the external servomotor, oil receiver, vibration-cutting connector, power transmission shaft and other parts.

The utility model provides an external blade servomotor which moves the blade servomotor out from the runner body to the outer end of the generator, as close as possible to the position of the original oil receiver. The external servomotor piston is connected to the blade of the runner through the power transmission shaft, so that the power transmission shaft can move left, right, up and down with the piston of the blade servomotor to control the opening or closing of the runner blade.

The diameter of the oil receiver described in the utility model is extremely small, all adopt the manufacturing process and technology of high oil pressure hydraulic components, and its oil leakage is extremely small, and reliable oil collection measures are designed. The connection between the oil receiver and the piston of the blade servomotor is carried out through a shock-absorbing connector composed of multiple sets of leaf springs. The common jump of the main engine will not be transmitted to the piston of the oil receiver. The pipelines and hoses of the two cavities A and B are directly connected to the two cavities A and B of the blade servomotor. Since the pressure oil cannot enter the interior of the runner, the problem of oil leakage and discharge downstream from the blade can be eradicated.

In the utility model, the propeller servomotor is installed on the left front of the unit or on the upper bracket, and one end of the piston is connected with the oil receiver through the shock absorber, and the other end is connected with the force transmission shaft, and the force transmission shaft is connected with the rotor blade. connect. Since the blade servomotor is arranged on the left front side or the upper side, it is not only convenient for maintenance, but also ensures that the pressure oil will not leak into the inside of the runner. Its advantage is that the whole structure is simplified, in addition to eradicating oil spills and pollution to rivers, it also brings great convenience to power station maintenance.

Claims (6)

1. a device of controlling the water turbine set runner blade comprises lubricant receiver and blade servomotor, and it is characterized in that: described blade servomotor is positioned at the outside of described web, and is affixed with the rotor field spider of unit, near described lubricant receiver.

2. the device of control water turbine set runner blade according to claim 1, it is characterized in that: the piston of described lubricant receiver links to each other with an end of described blade servomotor piston, the other end of described blade servomotor piston is connected with an end of force transmission shaft, and the other end of described force transmission shaft is connected with runner blade.

3. the device of control water turbine set runner blade according to claim 2 is characterized in that: the piston of the piston of described lubricant receiver and blade servomotor links to each other by the shock absorbing connector.

4. the device of control water turbine set runner blade according to claim 3 is characterized in that: described shock absorbing connector comprises many group leaf springs.

5. according to the device of claim 2 or 3 described control water turbine set runner blades, it is characterized in that: affixed oil sump tank on the described lubricant receiver, affixed oil sump tank on the described blade servomotor.

6. according to the device of claim 2 or 3 described control water turbine set runner blades, it is characterized in that: the A of described lubricant receiver, B two chambeies communicate by its inner hole slot and flexible pipe with A, B two chambeies of servomotor.

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