JPS5847181A - Feng Shui pump drive device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feng shui type pump drive device that uses wind or water power as a power source and drives a pump such as an oil pump via a transmission.

Recently, from the viewpoint of saving resources, a windmill or a water turbine that is rotationally driven by wind and water power, and a pump that is driven via a transmission by the rotation of the windmill or waterwheel are installed, and the pump is driven by wind and water power. A feng shui type pump drive device has been proposed that utilizes fluid energy as it is or by converting it into thermal energy.

By the way, in such a feng-hydro pump drive device, lubricating oil is injected into the casing of the transmission to lubricate the speed change gears, etc., but the temperature of the lubricating oil increases due to the frictional heat of the speed change gears, etc. Rise.

Particularly at high flow speeds, a large amount of frictional heat causes deterioration, and there is a problem that the transmission seizes up due to lack of lubrication.

The present invention has been made in view of the above-mentioned points, and in the above-mentioned feng-hydro pump drive device, a fluid pressure motor driven by the pump is provided in the discharge pipe of the pump, and the casing of the transmission is lubricated. A circulation pipe for circulating oil is connected, and the circulation pipe is provided with a circulation pump driven by the fluid pressure motor and a heat exchanger for cooling the lubricating oil. It is an object of the present invention to provide a feng-shui power/thermal gate exchange device that cools the lubricating oil accordingly and prevents seizure of the transmission due to thermal deterioration of the lubricating oil.

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 that is rotated by wind power.

A drive shaft (3a) of an oil pump (3) is connected to the rotation shaft (1a) of the windmill (1) via a transmission (2),
The oil pump (3) is driven by the rotation of the windmill [11]. Also.

(4) is the suction pipe of the oil pump (3), and (5) is the four branch parts (5s, (5s, (5d),
(5e) a discharge conduit having a suction conduit (4);
A closed circulation pipe is formed by the and discharge pipe (5), while the discharge pipe (5) has one branch part (5,
(5Q) each have two throttle valves (6a),
(6 branches ij (6c), (6d) are interposed, and other branches (5d), (5e)
One throttle valve (6s, (6f)) is provided in each of the discharge pipes (5).
(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 between the heat exchanger (7) and the cold water as the user-side medium flowing through the refrigerant pipe (8). It is configured to perform heat exchange. Note that (9) is a refueling oil pump that is driven by the rotation of the windmill (1) similarly to the oil pump (3), and is connected to the oil tank (10).
) through the first oil supply pipe (11g) and the second oil supply pipe (llb) to the suction pipe (4) and the discharge pipe (8).
).

The oil pump (3) is of a variable displacement type.

A discharge rate control valve 021 normally in a neutral position is connected to the discharge rate control section (3b) of the oil pump (3) via two pilot pipes (131 and α).
The discharge amount control valve (121K (Ii pilot pipe (1)
The second oil supply pipe (11) is connected via 51.

Further, σG) is a discharge amount control mechanism that controls to reduce the discharged acid per rotation of the oil pump (3) when the discharge pressure of the oil pump (3) is less than a set value.

The discharge amount control mechanism a61Ii, the cylinder aη, the piston (181) slidably inserted into the cylinder 0, and the piston directly connected to press the operating portion (12a) of the discharge amount control mechanism. Rod α9 and the rod (191
A spring (2) that biases the oil pump (3) outward, that is, a direction that switches the discharge amount control valve f12) to the left side position in the figure, and a spring (2) that biases the oil pump (3)'s discharge pressure (in detail) on the rod mounting surface of the piston striker in the cylinder D. is the discharge pipe branch part (5b)
The pilot pipe 21) inputs the oil pressure signal between the throttle υ valves (6a) and (6b) at By moving the rod A9 outward and moving the discharge amount control valve (12) to the left position in the figure, the pilot pipe (131 and 151) will communicate with each other and open the second oil supply pipe. (llb) oil pressure (lubricating oil pump (
9) Discharge pressure) signal from pilot pipe 1]5) and f
Discharge amount control unit (3b) of oil pump (3) via 131
As a result, the inclination angle of the discharge amount variable control element (3c) of the oil pump (3) is decreased to reduce the discharge amount per revolution, while the oil pump (3) is
When the discharge pressure of 3) is above the set value, the discharge pressure of the oil pump (3) input into the cylinder αη causes the rod [1'll to move inward by the amount that resists the biasing force of the spring. By switching the discharge amount control valve 021 to the right position in the figure, the pilot pipes (141 and (15)) communicate with each other, and the hydraulic signal of the second oil supply pipe (llb) is transmitted through the pilot pipes (151 and (141). This is input to the oil pump discharge amount control section (3b), and this causes the discharge amount variable control element (3C) to be tilted to an angle of inclination corresponding to the pressure to increase the amount of oil discharged per revolution. After resisting the biasing force of the spring (181), the piston (181) is retracted to the stroke end.

The discharge amount per rotation of the oil pump (3) becomes maximum.

Further, (221) is an accumulator connected to the discharge pipe (5) of the oil pump (3) via a soy sauce pipe F231, and an oil pump (3) is connected to the suction pipe (4),
While the oil pump (3) (wind turbine (1)) is operating, the discharge pipe (5)
) and accumulate it through the oil pipe (to).
When starting the oil pump (3), the pressure oil is supplied to the oil supply pipe (2).
The oil pump (3) is supplied to the suction pipe (4) of the oil pump (3) through the oil pump (3), thereby using the oil pump (3) as a hydraulic motor to start the wind turbine fl'l.

Furthermore, the throttle valve (6) of the discharge pipe branch part (5e)
f) A variable displacement hydraulic motor installed downstream, the rotating shaft (25a) of the hydraulic motor □□□ being the driving shaft of the water pump ω installed in the refrigerant pipe (8). (26a)
are connected, and the water pump (to) is connected to a hydraulic motor (2
) is driven by the rotation of the An inflow control valve normally in a neutral position is connected to the inflow control unit (25b) of the hydraulic motor (to) via two pilot pipes (1) and (2). Pilot pipe (30I
and 05) to the second oil supply pipe (llb). (311 is the hydraulic motor (2)
5) is an inflow amount control mechanism that controls the amount of input per revolution to increase or decrease in inverse proportion to the discharge pressure of the oil pump (3). That is, the inflow amount control mechanism (31) has a cylinder (
a piston lock that is slidably inserted into the cylinder; and a rod that is connected to the piston and presses the operating portion (27a) of the inflow control valve.

A spring l35 that urges the rod outward, that is, in a direction that switches the inflow rate control mechanism to the left position in the figure.
), the piston (331) in the cylinder (9), and the discharge pressure of the oil pump (3) on the side (more specifically, the throttle valve (6c) in the discharge pipe branch part (5c), (6
d) Pilot pipe (36) for inputting the signal (hydraulic pressure between
When the discharge pressure of the oil pump (3) increases.

Due to the discharge pressure of the oil pump (3) which is bent inside the cylinder, the rod (toward) resists the biasing force of the respring (g).
By moving the discharge amount control valve (121) inward and switching the discharge amount control valve (121 to the right position in the figure), the pilot pipe line) and (30) communicate with each other, and the hydraulic pressure (llb) of the second oil supply pipe line (llb) is controlled.
The discharge pressure signal of the refueling oil pump (9) is sent to the pilot line f151.

(2) and I29) to the inflow rate control unit (25b) of the hydraulic motor (25), and in turn, the inclination angle of the inflow rate variable control element (25c) of the hydraulic motor (25) is decreased. While controlling the inflow amount per rotation to decrease.

When the discharge pressure of the oil pump (3) decreases, the rod is moved outward by the biasing force of the spring, and the inflow control valve (5) is switched to the left position in the figure. Pipe c281 and Ai communicate with each other to input the hydraulic signal of the second oil supply pipe (llb) to the hydraulic motor inflow amount control section (25b) via the tR iro-nod pipe f151, ■ and (branch)). As a result, the inclination angle of the variable inflow control element (25c) is increased to 1
It is configured to increase and control the inflow amount per rotation. As described above, by increasing or decreasing the rotation speed of the hydraulic motor (2) in accordance with the product of the discharge pressure and the discharge amount of the oil pump (3), the discharge amount of the υ water pump 伅 is controlled. It is configured.

and a discharge pipe branch part (5d) of the oil pump (3).
A hydraulic motor (40) driven by the oil pump (3) is provided downstream of the throttle valve (6e). on the other hand,
A circulation pipe (9) for circulating the lubricating oil injected into the casing (2a) is connected to the casing (2a) of the transmission (2), and the circulation pipe (branch) is connected to the circulation pipe (9). A pump is provided. The drive shaft (39a) of the circulation pump is connected to the rotating shaft (4oa) of the hydraulic motor (40), and the hydraulic motor (4o)
It is driven by the rotation of the In addition, a heat exchanger (41
), and therefore the lubricating oil heated by frictional heat such as gear frictional heat in the transmission (2) is used as a heat exchange medium to flow through the refrigerant pipe (8) in the heat exchanger (41). By exchanging heat with cold water as a side medium, the cold water is heated, while the lubricating oil is cooled.

In addition, +421 is a pressure compensating device control valve installed upstream of the branch parts (5b) to (5e) of the discharge pipe (5) of the oil pump (3), and (431 is the oil pump (3) discharge pipe) The accumulator (451 is connected to the soy sauce pipe (4) of the accumulator (43) via lead) to the upstream side (5a) of the pressure-compensated flow control valve (5); 43) is a pressure switch that is turned ON by the hydraulic pressure when the storage of pressure oil is completed,
When the pressure switch (451) is turned on, the wind turbine tl l
The brake device (461) provided around the rotating shaft (1a) is actuated to brake the rotation of the wind turbine il+. (4η is the pressure switch (451 connection part) of the soy sauce pipe (441). Throttle valves installed upstream, (column is the branch part (5b) of the oil pump (3) discharge pipe (5) - (
5e) I717-F valve connected downstream, which controls the pressure of the pressure oil supplied to the heat exchanger (7) below a set value. Furthermore, +49+ is a pressure reducing valve installed in the soy sauce pipe I23) of the accumulator 22), □□□
and (51) are the soy sauce pipe (231 pressure reducing valve), respectively.
49) Throttle valve installed immediately upstream and immediately upstream of accumulator C2+, ω is a check solenoid valve installed in the oil supply pipe (24) that supplies the pressure oil accumulated in the accumulator to the oil pump (3) It is normally in a non-return state and is excited and opened only when the oil pump (3) is started.One end of (53) is connected to the oil supply pipe (241) through the introduction pipe (goods). The oil pump is connected to At the time of starting (3), the pressure oil in the accumulator is reduced to the set pressure and introduced into the pilot pipes (I51 and The check valve for preventing the backflow of pressure oil in the accumulator ■, which is installed in the suction pipe (4) of the oil pump (3), is connected to the circulation pipe '(heat exchanger in water) downstream of the circulation pump (3). Vessel+
411), which is a safety valve provided in a bypass pipe line 69) that bypasses 411.

This is to protect the heat exchanger (41). others.

((g) is a hot water tank that stores the hot water heated in the heat exchanger (4υ and (7)), (611 is a hot water tank that stores the hot water heated in the hot water tank (60), and is used to supply hot water to the reheating boiler (62). Hot water pump, (T) is a hot water pump that supplies hot water in the hot water tank (60) to the outside, (84J is) J router, (2) is a thermometer, (66) is a thermostat, Pressure gauge, !6B+ is drain pipe, (6
9) 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 it undergoes heat exchange with the cold water supplied via the refrigerant pipe (8). As a result, the cold water becomes hot, while 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, the temperature of the lubricating oil in the transmission (2) increases due to frictional heat from the gears, etc., but the temperature of the lubricating oil that has risen is
The circulation pump (39) circulates through the circulation pipe (5), and in the heat exchanger (41) of the circulation pipe (9), the cold water supplied via the refrigerant pipe (8) and It is cooled by heat exchange between the two.

The circulation pump (39) is driven by the rotation of the hydraulic motor (40) which is driven by the oil pump (3), so the discharge amount of the circulation pump (39) is equal to that of the oil pump (3). Since it changes according to the discharge amount, that is, the wind speed, the cooling of the lubricating oil in the heat exchanger (41) described above is performed according to the frictional heat in the transmission (2). Therefore, the temperature of the lubricating oil in the transmission (2) is cooled and controlled to a constant temperature regardless of changes in wind speed, making it possible to reliably prevent the lubricating oil from thermally deteriorating. It is possible to prevent the machine from seizing and improve its durability.

Moreover, the frictional heat within the transmission (2) is transferred to the heat exchanger' (
At 411, the refrigerant is used to heat the cold water supplied through the pipe (8), thereby eliminating waste of thermal energy and increasing the efficiency of wind power utilization.

In the above embodiment, wind power is used as the cutting blade source, and the transmission (2)
Although the case has been described in which the application is applied to a wind-powered pump drive device that drives an oil pump (3) through a transmission, the present invention uses wind power as a power source and drives a water pump through a transmission (2) It can also be applied to a wind-powered pump drive device. It can also be applied to a single hydraulic pump drive device in which a water wheel is rotationally driven using water power as a power source, and various pumps are driven via a transmission by the rotation of the water wheel.1. It can produce similar effects.

As explained above, according to one aspect of the present invention, in a feng shui pump drive device that includes a wind turbine or water turbine that is rotationally driven by feng shui force, and a pump that is driven via a transmission by the rotation of the wind turbine or water turbine, A fluid pressure motor driven by the pump is provided in the discharge pipe of the pump, and a circulation pipe for circulating lubricating oil is connected to the casing of the transmission.

By providing a circulation pump driven by the fluid pressure motor and a heat exchanger for cooling the lubricating oil in the circulation pipe, the lubricating oil is cooled in response to the heat generated by the transmission. Since the temperature of the lubricating oil can be maintained almost constant, seizure of the transmission due to thermal deterioration of the lubricating oil can be reliably prevented, and the durability of the transmission can be improved.

[Brief explanation of drawings]

The drawing is a hydraulic circuit diagram of a wind-powered pump drive device according to the present invention. (1) Wind turbine, (2) Transmission, (2a) Casing, (3) Oil pump, (37) Circulation pipe,
(3 (support)...Circulation pump, (401 hydraulic motor, +4
1+...Heat exchanger.

Claims (1)

[Claims] ill A windmill fi+ or waterwheel that is rotationally driven by wind and water power, and a transmission (2) that is driven by the rotation of the windmill (1) or waterwheel.
), in which a fluid pressure motor (40) driven by the pump (3) is connected to the discharge pipe (5) of the pump (3). ), and a circulation pipe (9) for circulating lubricating oil is connected to the casing (2a) of the transmission (2), and the fluid pressure motor (
40); and a heat exchanger (41) for cooling lubricating oil.