JPS599821B2 - Hydraulic heat conversion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a hydraulic heat conversion device that converts pressure energy contained in pressure oil into thermal energy.

BACKGROUND OF THE INVENTION This type of device is extremely useful, for example, in converting wind energy into heat and using the wind power for heating purposes.

In other words, wind power has been used in various ways as an energy source since ancient times, and wind power has become more and more familiar, from small-scale uses such as pumping water to large-scale uses for wind power generation using large wind turbines. Its use is being reconsidered as a source of clean energy that exists and cannot be exhausted.

The inventor of this application took into account the characteristics of wind energy and made an epoch-making invention (Japanese Unexamined Patent Application Publication No. 1983-1971) of first converting it into hydraulic energy and then converting it into thermal energy.
138636 ``Heating device'').

This invention is shown in FIG. 3. First, the configuration will be explained. Reference numeral 1 denotes a positive displacement hydraulic pump, into which a drive shaft 2 rotated by a windmill 8 is inserted and connected, and is driven to rotate and discharges pressure oil. It is discharged from the outlet 1a.

In this case, oil from the oil tank 3 is pumped up to the suction port 1b of the hydraulic pump 1 via the oil suction pipe 6.

In this way, wind energy is first converted into hydraulic energy.

Reference numeral 4 denotes a constriction part, and pressure oil is injected from this constriction part 4 and is heated by gaining thermal energy without losing pressure energy.

The heated oil is sent to a heater 7 etc. via a pipe 5 and then returned to the oil tank 3 via a pipe 5'.

In this configuration, the heat conversion device is composed of a hydraulic pump 1, an energy conversion mechanism 4, and an oil circulation system such as piping 5, oil suction pipes 6, and oil tank 3.

Incidentally, in such a heat conversion device, particularly in the hydraulic pump 1, an oil seal 9 is installed at a portion into which the rotary drive shaft 2 is inserted.

This is to prevent pressure oil from leaking from other than the discharge port 1a of the hydraulic pump 1.

Since this oil seal 9 is in sliding contact with the drive shaft 2, it wears out over time, significantly reducing the durability and reliability of the device.

There is also the problem that wind energy is consumed by the frictional force at this oil seal portion, resulting in a decrease in energy conversion efficiency.

(c) Objective: The present invention aims to solve the above-mentioned problems and provide a hydraulic heat conversion device that increases durability, improves reliability of equipment, and is highly efficient.

(D) Structure This invention provides a hydraulic pump that is configured as a pump that allows some leakage without being attached with a sealing mechanism such as an oil seal, and that this hydraulic pump is installed inside an oil tank to avoid problems caused by oil leakage. This greatly improves the durability and reliability of the equipment by installing a sealing mechanism.

Furthermore, according to the present invention, the energy conversion mechanism is installed in oil to increase conversion efficiency.

(e) Examples The following describes the structure of the present invention with reference to FIGS. 1 and 2.

In Figures 1 and 2, the same numbers as in Figure 3 are shown in Figure 3.
The function is the same or similar to that shown in the figure, and detailed explanation will be omitted.

In FIG. 1, the windmill 8' is a Savonius windmill, but this is just one embodiment.

As is clear from Fig. 1, the hydraulic pump 1 does not have an oil seal or the like installed at the insertion part of the drive shaft 2, and is designed to allow a slight amount of oil leakage, eliminating unnecessary contact with the drive shaft 2 as much as possible. There is.

This hydraulic pump 1 is installed inside the oil tank 3.

Therefore, even if a small amount of oil leaks, the oil only drips into the oil tank 3 and does not pose a problem.

Note that 10 is a heat insulating tank filled with hot water W.

Reference numeral 11 indicates a water supply system, and 12 indicates a hot water extraction system.

Further, 13 indicates a cover made of a heat insulating material.

FIG. 2 is a diagram showing a modified embodiment of the present invention, and the configuration shown in FIG. 2 differs from the configuration shown in FIG. 1 in that the hydraulic pump 1 and the energy conversion mechanism (throttle section) 4 are submerged in oil. I have to.

In this case, the hydraulic pump 1 does not require a special oil suction pipe.

In this embodiment, the energy conversion mechanism 4 is located in the oil and also heats the oil in the oil tank 3, so that the heat conversion efficiency increases.

Note that the piping 5 connected to the output side of the thermal energy conversion mechanism 4 is a low-pressure piping, which facilitates the penetration and installation of the oil tank 3.

In other words, a major feature of the present invention is that the high-pressure piping, which is difficult to handle and prone to oil leaks, is from the hydraulic pump 1 to the thermal energy conversion mechanism 4, and is all arranged within the oil tank 3 to avoid problems. It is.

Further, in the case of the present invention, the drive source for the rotary drive shaft is not limited to a wind turbine, but may also include an electric motor, hydraulic power, or human power, and is not limited to these.

(f) Effects As described in detail above, in this invention, the rotary drive shaft inserted into the hydraulic pump is configured as a bearing without using a seal mechanism for preventing oil leakage, so there is no oil seal part, and therefore, Since there is no damage to the oil seal, the durability of the device itself is increased, and its reliability as a heat conversion device can be significantly improved.

In addition, when using wind power, there is an advantage that energy loss due to friction in the oil seal part is reduced when converting wind energy into thermal energy, and since the wind turbine starts rotating with a weaker wind force than before, it can generate heat even when the wind is weak. It has the advantage of being convertible.

Furthermore, by arranging the high-pressure oil piping within the oil tank, it has the effect of making equipment installation and handling extremely easy.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of a hydraulic heat conversion device according to the present invention, FIG. 2 is a diagram showing a modified embodiment, and FIG. 3 is a diagram showing a conventional configuration. 1: Hydraulic pump, 1a: Discharge port, 1b: Oil suction port, 2: Rotation drive shaft, 3: Oil tank, 4: Energy conversion mechanism, 5, 5
': Piping, 7: Heater, 8: Windmill, 9: Oil seal,
10: Heat retention tank.

Claims (1)

[Claims] 1. A hydraulic pump that is rotationally driven in response to the rotation of a rotary drive shaft and generates pressure oil, an energy conversion mechanism that converts the pressure energy of this pressure oil into thermal energy by a throttle section installed in a hydraulic circuit, and an energy conversion mechanism. and an oil circulation piping system that returns the converted oil to the oil tank and supplies it again to the hydraulic pump, and the converted thermal energy is extracted from the oil circulation system including the hydraulic pump, the energy conversion mechanism, and the oil tank and used. In the heat conversion device according to 6, the hydraulic pump and the thermal energy conversion mechanism are installed in the oil tank, and a low pressure oil circulation pipe from the thermal energy conversion mechanism is installed through the oil tank, and the hydraulic pump and the thermal energy conversion mechanism are installed inside the oil tank. A hydraulic heat conversion device characterized in that the rotary drive shaft inserted into the pump is configured as a bearing without using a sealing mechanism for preventing oil leakage.