JPS5847174A - Wind or water-powered pump-driving device - Google Patents

Abstract

PURPOSE:To prevent a wind (or a water) mill from over-speed revolution by connecting an oil-accumulation pipe passage to a discharge pipe passage of a pump driven by the wind or the water mill and providing a brake device in the wind or the water mill to be operated when the average pressure in a pressure accumulator is over a fixed value. CONSTITUTION:A pump 3 is driven by a wind (or a water) mill 1 via a transmission gear box 2. A shaft 1a of the windmill 1 is provided with a brake device 46. A pressure-accululator 43 is connected to a discharge pipe passage 5 of the pump 3 via an oil-accumulation pipe passage 44, which is equipped with a throttle valve 47 and a pressure switch 45. The change of the discharge pressure of the pump 3 is averaged by the pressure-accumulator 43. When this averaged pressure is risen over a fixed value, the pressure switch 45 is on to operate the brake device 46, and the number of revolutions of the windmill 1 is reduced for preventing over-speed revolution.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feng shui type pump driving device that drives a pump such as an oil pump using wind, force, or hydraulic power as a power source.

Recently, from the perspective of saving resources, windmills or waterwheels that are rotated by wind and water power and pumps that are driven by the rotation of the windmill or waterwheel have been installed, and the pump is driven by wind and water power, and the fluid energy of this pump is directly used. Alternatively, a feng shui type pump drive device has been proposed that converts the heat energy into heat energy and utilizes it.

By the way, in such a feng shui type pump drive device, in order to prevent destruction due to abnormal high-speed rotation of the wind turbine or water turbine in a high flow velocity range such as wind speed, the brake device is used to stop the wind turbine or water turbine when the flow velocity exceeds a set value. Measures have been taken to brake the rotation of the wind turbine or water turbine, but even when the flow velocity instantaneously exceeds the set value, the rotation of the windmill or water turbine is braked. There was a problem in that it was almost impossible to use it in a high flow velocity region.

Therefore, in order to prevent rotational braking of windmills or water turbines due to such instantaneous increases in flow velocity, the flow velocity is made continuous.

and a control device such as a computer that calculates the average value of the measurement gate of the measuring device over a certain period of time and operates the brake device when the average value is greater than or equal to a set value. Therefore, it is conceivable to brake the rotation of the wind turbine or water turbine when the average flow velocity exceeds a set value, but this has the disadvantage that the structure is complicated and expensive.

The present invention has been made in view of the above-mentioned problems, and in the feng shui type pump drive device as described above, a brake device is provided to brake the rotation of the windmill or waterwheel, and a soy sauce pipe is connected to the discharge pipe of the pump. An accumulator is provided, and a pressure switch is connected to the soy sauce pipe that is turned ON to operate the brake device when the pressure of the accumulator exceeds a set value, and a discharge from the pump is connected upstream of the pressure switch connection part of the soy sauce pipe. By providing a throttle valve that slows down the accumulation of fluid in the accumulator, averaging fluctuations in the pump discharge pressure, and braking the rotation of the windmill or water turbine when the average value exceeds a set value. It is an object of the present invention to provide a feng shui type pump drive device that has a simple structure, is low cost, can be used in a high flow rate range, and can prevent the destruction of wind turbines or water turbines due to abnormally high speed rotation. be.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

The drawing shows a wind-powered pump drive device according to the present invention, (1
) is a windmill rotationally driven by wind power, and the windmill f
A drive shaft (3a) of an oil pump (3) is connected to the rotation shaft (1a) of the 1+ via a transmission (2), and the oil pump (3) is driven by the rotation of the windmill +11. In addition, (4) is the suction pipe of the oil pump (3), (5) is the four parallel branch parts (!5b), (5c),
(5(1)l (5e)),
The suction pipe (4) and the discharge pipe (5) form a closed circulation pipe, while the discharge pipe (6) has a branch part (51) (5c), respectively. Two throttle valves (6a)l (6b) or (6C) + (6d)
is interposed, and another branch part (5d) + (5
One throttle valve (6θ) + (6f) is interposed in each of e). Furthermore, the throttle valve (6) of the discharge pipe line
a).

~(6f) A heat exchanger (7) is provided downstream,
The pressure oil, whose oil temperature has increased due to the throttling effect of the throttle valves (6a) to (6f), is used as a heat exchange medium to transfer heat between it and the cold water flowing through the cold water pipe (8) as a user-side medium in the heat exchanger (7). configured to perform an exchange. Note that (9) is a refueling oil pump that is driven by the rotation of the windmill f1, similar to the oil pump (3), and is connected to the oil tank (10).
1 through the first oil supply pipe (lla) and the second oil supply pipe (1lb) to the suction pipe (4) and the discharge pipe (4).
5).

The oil pump (3) is of a variable displacement type, and the discharge rate control portion (3b) of the oil pump (3) has two pilot pipes connected to the discharge rate control valve α2) which is normally in the neutral position. θ3
) and (14), and the discharge amount control valve (the second oil supply pipe (I It) is also connected to the country via the pilot pipe (+5)).

In addition, (the government provides a discharge amount control mechanism that controls the amount of discharge per revolution of the oil pump (3) when the discharge pressure of the oil pump (3) is below a set value, The control mechanism (+6) includes a cylinder Qη, a piston (+81) slidably inserted into the cylinder αη, and an operating portion (12a) of the discharge amount control valve (12) connected to the piston (+8). The rod (+9) that presses the
9) in the outward direction, that is, in the direction of switching the discharge amount control valve (12) to the left position in the figure, and the oil pump (3) on the rod mounting surface side of the piston α in the cylinder αη. Discharge pressure (for details, see the discharge pipe branch section (
Hydraulic pressure between throttle valves (6a) and (6b) in 5b))
When the discharge pressure of the oil pump (3) decreases below the set value from the pilot pipe (1) that inputs the signal,
By moving the rod (19) outward by the biasing force of the spring @0) and switching the discharge amount control valve θ2) to the left position in the figure, the pilot pipes Q3) and (+5)
The oil pressure (discharge pressure of the refueling oil pump (9)) of the second oil supply pipe (111) is communicated with the pilot pipe θ0 and the discharge amount of the oil pump (3) is controlled via the pilot pipe (13). Department (
3b), thereby reducing the inclination angle of the variable discharge amount control element (3C) of the oil pump (3).
While controlling to reduce the discharge amount per revolution, when the discharge pressure of the oil pump (3) is higher than the set value, the discharge pressure of the oil pump (3) input into the cylinder holder Q'7) is controlled to decrease. The rod (I) resists the urging force of (2o).
9) inward and switch the discharge amount control valve θ2) to the right position in the figure.
and 06) communicate with each other to input the oil pressure signal of the oil supply pipe (llb) to the oil pump discharge amount control section (3b) via the pilot pipes θ6) and θ4), thereby controlling the discharge amount variable. The element (3C) is configured to tilt at an inclination angle corresponding to the pressure to increase the discharge amount per rotation. Incidentally, after resisting the biasing force of the spring (3), the piston (18) is retracted to the stroke end, and the discharge amount per revolution of the oil pump (3) becomes maximum.

In addition, (the figure shows an accumulator connected to the discharge pipe (5) of the oil pump (3) via a soy sauce pipe (23), and the middle of the soy sauce pipe (23j) is a fuel supply pipe (24). The oil pump (3) is connected to the suction pipe (4) through the oil pump (3).
While the oil pump (3) (wind turbine (1)) is operating, the discharge pipe (6)
) is accumulated through the soy sauce pipe A, and when the oil pump (3) is started, the pressure oil is transferred to the suction pipe (4) of the oil pump (3) via the oil supply pipe (goods). ), the oil pump (3) is used as a hydraulic motor to drive the windmill (
11.

Furthermore, (2 yen is a variable displacement hydraulic motor installed downstream of the throttle valve (6f) of the discharge pipe branch part (5e), and the rotation shaft (25a) of the hydraulic motor (20) is A drive shaft (26a) of a water pump (26) is connected to the cold water pipe (8), and the water pump is driven by the rotation of a hydraulic motor. The inflow control valve (25b), which is normally in the neutral position, is connected to the inflow control unit (25b) of the motor (211i) through two pilot pipes (c) and 4. η
The fuel supply pipe (l lb) is connected to the fuel supply pipe (l lb) via pilot pipes (30) and (15). Also @1
Reference numeral 1 denotes an inflow amount control mechanism that controls the inflow amount per rotation of the hydraulic motor 0 to increase or decrease in inverse proportion to the discharge pressure of the oil pump (3). That is, the inflow control mechanism (3
1) comprises a cylinder, a piston (3) slidably inserted into the cylinder, and an operating portion (27a) of the inflow control valve (27) connected to the piston (33). )
The rod that presses the rod outward, that is, the inflow control mechanism is on the left side in the figure.

A spring (T) that biases in the direction of switching the position, and a discharge pressure of the oil pump (3) (specifically, a throttle valve at the discharge pipe branch part (5C) (6c), ” (6d), and a pilot line (36) that inputs a signal (hydraulic pressure between ), the pilot pipe (29 ) and (b) communicate with each other to transmit the oil pressure (discharge pressure of the oil supply pump (9)) signal of the second oil supply pipe (1 lb) to the pilot pipe (15),
(30) and the side to the inflow rate control unit (25b) of the hydraulic motor 4, thereby reducing the inclination angle of the inflow rate variable control element (25C) of the hydraulic motor 4, and When the discharge pressure of the oil pump (3) decreases, the spring (
By moving the rod (34) outward by the biasing force of 2) and switching the inflow control valve (2η) to the left position in the figure, the pilot pipe (8) and (4) communicate with each other and open the second oil supply pipe. The oil pressure signal of the line αlb) is transmitted to the pilot line (15),
(30) and (c) to the hydraulic motor inflow rate control section (25b), thereby increasing the inclination angle of the inflow rate variable control element (25c) to increase the inflow rate per rotation. configured to control. Through the above steps, the rotation speed of the hydraulic motor (to) can be adjusted to
) is configured to control the discharge amount of the water pump by increasing or decreasing it in accordance with the product value of the discharge pressure and the discharge amount.

On the other hand, a transmission cooling oil pump @9) is connected to the casing (2a) of the transmission (2) through the suction pipe body η and the three groups of discharge pipes. The cooling oil pump (39) has a drive shaft (39a) connected to a hydraulic motor (40) which is disposed downstream of the throttle valve (6e) of the discharge pipe branch (5d) of the oil pump (3). It is connected to a rotating shaft (40a), is driven by the rotation of the hydraulic motor (40), and is connected to a discharge pipe of a nuclear oil pump (39).
A heat exchanger (41) is installed in the heat exchanger (41), and the lubricating oil heated by the friction heat of the vehicle in the transmission (2) is used as a heat exchange medium to pass through the cold water pipe (8). It is configured to perform heat exchange with cold water as a usage medium.

As a main feature of the present invention, the wind turbine f1)
A brake device for braking the rotation of the wind turbine fl) is provided around the rotating shaft (1a) of the oil pump (3), while the branch portions (5b) to (5e) of the discharge pipe (5) of the oil pump (3)
) upstream is connected to the soy sauce pipe) via the accumulator (43
) is provided in the soy sauce pipe), and a pressure switch () is provided in the soy sauce pipe () which is turned ON to operate the brake device (46) when the pressure in the accumulator (to) is higher than a set value.
The pressure switch (to the soy sauce pipe upstream of the connection) is equipped with a throttle valve (3) that slows down the accumulation of pressure oil from the oil pump (3) into the accumulator (c).
4η is provided to average fluctuations in the discharge pressure of the oil pump (3) and brake the rotation of the wind turbine (1) when the average value exceeds a set value. .

In addition, (碍 is the pressure-compensated flow control valve installed downstream of the accumulator (431) connection part of the oil pump (3) discharge pipe (5), (state is the oil pump (3) discharge pipe (5) ) is a relief valve connected downstream of the branch parts (5b) to (5e), and controls the pressure of the pressure oil supplied to the heat exchanger (7) to be below a set value. ) is a pressure reducing valve installed in the soy sauce pipe of the accumulator, (50)
and (5υ are the pressure reducing valves (4) of the soy sauce pipe (23), respectively.
9) A throttle valve installed immediately upstream and immediately upstream of the accumulator handle, and the older one is a check solenoid installed in the oil supply pipe that supplies the pressure oil accumulated in the accumulator handle to the oil pump (3). The valve is normally in a non-return state and is energized to open only when the oil pump (3) is started. Furthermore, one end of (53) is connected to the oil supply pipe (goods) via the introduction pipe diagram, and the other end is connected to the discharge amount control valve (12) and the inflow amount control valve (via the pilot pipe (5)). 27)
A pressure reducing valve connected to a pilot pipe communicating with the pilot pipe (15), which reduces the pressure oil in the accumulator (2) to a set pressure when the oil pump (3) is started.
and -. In addition, − and (5
η is a check valve for preventing the backflow of pressure oil in the accumulator (22), which is installed in the soy sauce pipe line of the accumulator holder and the suction pipe (4) of the oil pump (3), respectively, and η is for cooling the transmission. This is a safety valve provided at the width of the bypass pipe that bypasses the heat exchanger (40) in the discharge pipe (g) of the oil pump (39), and is for protecting the heat exchanger (41). In addition, (6 (2) is a hot water tank that stores the hot water heated in the heat exchangers (41) and (7), (61) is a hot water tank (the hot water in 61 is supplied to the boiler country of the reheating angle) The hot water pump (63) is the hot water tank (the hot water pump that supplies hot water inside the head to the outside).
(6 brown is the filter, (6 (to) is the thermometer, ((to) is the thermostat, Shu is the pressure gauge, (6119 is the dreno pipe,
(69) is a ventilation hole.

Next, to explain the operation of the above embodiment, when the wind turbine +1+ is rotationally driven by wind power, the rotation is caused by the transmission (
2), the drive shaft of the oil pump (3) (
3a), the oil pump (3) is driven, and as the oil pump (3) is driven, pressurized oil is discharged and pressure-fed from the oil pump (3) to the discharge pipe (5). This discharged pressure oil flows through the branch parts (5b) to (5e) of the discharge pipe (5).
), the pressure oil is throttled by the throttle valves (6a) to (6f) when passing through the throttle valves (6a) to (6f), thereby increasing the temperature of the pressure oil. This heated pressure oil flows into the heat exchanger (7), where heat exchange is performed with the cold water supplied via the cold water pipe (8). While the cold water becomes hot, the oil temperature decreases. Thereafter, the pressure oil flowing out from the heat exchanger (7) is sucked into the oil pump (3) via the suction pipe (4). Thereafter, hot water can be obtained by repeating the circulation of the pressure oil as described above.

At that time, when the wind speed changes, the oil pump (3
) changes and the discharge pressure fluctuates, but the accumulator (throttle valve 17 that slows down the accumulation of pressure oil in the soy sauce pipe) from the oil pump (3) to the accumulator (in the state's soy sauce pipe)
is provided, so the fluctuations in the discharge pressure are not immediately transmitted to the accumulator (43), but the averaged oil pressure is input to the accumulator (43). When the average wind speed exceeds the set value, the pressure switch (state) detects this and turns on the brake system (4).
6) is activated to brake the rotation of the wind turbine fil. Therefore, the rotation of the wind turbine (1) is not restricted every time the wind speed increases instantaneously, and while it is possible to use the wind turbine (1) in a high wind speed region to some extent, the rotation of the wind turbine (1) due to abnormally high speed rotation is not restricted. Destruction.

It can definitely be prevented.

In the above embodiment, the oil pump (3
), but the present invention can also be applied to a wind pump drive device that uses wind power as a power source to drive a water pump. It can also be applied to a hydraulic pump drive device in which a water wheel is rotationally driven using water power as a power source, and various pumps are driven by the rotation of the water wheel.
As described above, according to the present invention, a windmill or waterwheel whose rotation is driven by wind and water force, and a pump driven by the rotation of the windmill or waterwheel are combined. In the feng shui type pump drive device provided, a brake device is provided to brake the rotation of the windmill or water turbine, and an accumulator is provided in the discharge pipe of the pump via a soy sauce pipe, and the accumulator is connected to the soy sauce pipe. A pressure switch is connected that is turned ON to operate the brake device when the pressure exceeds a set value, and a throttle is provided upstream of the pressure switch connection part of the soy sauce pipe to slow down the accumulation of fluid discharged from the pump into the accumulator. By installing a water valve and averaging fluctuations in the pump discharge pressure, and braking the rotation of the windmill or water turbine when the average value exceeds a set value, it is possible to use it in a high flow velocity range. At the same time, it is possible to reliably prevent destruction of a wind turbine or water turbine due to abnormally high speed rotation with a simple structure and at low cost.

[Brief explanation of the drawing]

The drawing is a hydraulic circuit diagram of a wind-powered pump drive apparatus according to the present invention. +1) Windmill, (3) Oil pump, (6) Discharge pipe, (431 Accumulator, Soy sauce pipe, (40) Pressure switch, (46)... Brake device, t+'7)...throttle valve.

Claims (1)

[Claims] fl) A feng shui pump drive device comprising a windmill ( ) or a waterwheel that is rotationally driven by fengshui force, and a pump (3) that is driven by the rotation of the windmill (1) or the waterwheel. A brake device is provided to brake the rotation of the water turbine, and an accumulator is provided in the discharge pipe (5) of the pump (3) via the soy sauce pipe diagram, and the soy sauce pipe (44I is connected to the accumulator). ) is turned ON when the pressure of A throttle valve (47) is provided to slow down the accumulation of fluid discharged from the pump (3) into the accumulator.
1.) A feng shui type pump drive device characterized in that the rotation of the windmill fi+ or the water turbine is braked when the fluctuations in the discharge pressure of the above are averaged and the average value exceeds a set value.