KR20160020826A - Electricity generation and Decompression device in Plumbing - Google Patents

Abstract

Disclosed is an electricity generation type decompression device in plumbing, which comprises: a device body having a pipe shape wherein both ends thereof are opened, and having an opening port opened in an external side; a propeller installed inside the device body; a main shaft connected to the center of rotation of the propeller; an internal housing accommodating the main shaft to be rotationally supported, and arranged inside the device body through the opening port; an external housing connected to the internal housing to be interconnected to the internal housing, and coupled to close the opening port; a sub-shaft rotationally installed in the external housing; a power transmission unit transmitting power in the main shaft to the sub-shaft; a power generation unit producing power by receiving a rotational force of the sub-shaft; a power accumulation unit accumulating electric power produced in the power generation unit; an electromagnetic brake selectively suppressing rotation of the sub-shaft; a water pressure sensor measuring water pressure inside the device body; and a control unit controlling operation of the electromagnetic brake based on a water pressure measurement value measured in the water pressure sensor to control a rotational speed of the propeller.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power generation type decompression device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power generation type pressure reducing apparatus for a water supply pipe. More particularly, the present invention relates to a power generation type pressure reducing apparatus for a water supply pipe that can simultaneously generate power while reducing water pressure.

The water in the water supply and drainage pipe is pressurized to the required pressure at the pumping station and is transferred to the destination where the water pressure is insufficient through the water supply pipe. The pressure applied to the water at the pressure field is determined in consideration of the distance between the pressure field and the consumer, the diameter and condition of the water pipe, and the like. For example, if the target area is considerably remote from the pumping station and also includes elevations, the pressure applied to the water is relatively high.

On the other hand, a pressure reducing valve for lowering water pressure of the water supply pipe is almost indispensably installed in the above-mentioned water supply pipe, for example, when a water pressure higher than necessary is generated, it may damage the water supply pipe and the water supply and drainage facilities. The pressure reducing valve operates when the water pressure of the water is higher than necessary, so that the water pressure of the water on the downstream side of the pressure reducing valve is kept substantially constant, thereby preventing the water pipe from bursting or leaking.

There are many types of the above-described reducing valve, and for example, a type that can generate electricity by using the water pressure of water passing through a water supply pipe has been developed.

FIG. 1 is a schematic view showing a conventional decompression apparatus to which a power generation system is applied.

The pressure reducing apparatus shown in Fig. 1 is provided with a rotor 17 rotatable with a shaft 21 as a rotation axis in a water supply pipe 11, guide hills 13 and 15 fixed on the upstream and downstream sides of the rotor 17 And a generator (not shown) that receives the rotation torque from the rotor 17 to produce electricity.

The rotor (17) is provided with a plurality of blades (19) for receiving the water pressure of water to rotate the shaft (21). The blade 19 receives the kinetic energy of water passing through the water supply pipe 11 and rotates the rotor 17.

The end of the shaft 21 extends to the outside of the water supply pipe 11 to drive the electric generator installed outside the water supply pipe 11 to cause the electric generator to generate electricity.

The guide hills 13 and 15 are protrusions fixed to the inner wall surface of the rotor 17 and guide water stream lines in the direction of arrow a so that water passes through the lower portion of the rotor 17 in the drawing.

The reason why the decompression apparatus having the above configuration reduces the water pressure of the water is that the decompression apparatus itself acts as an obstacle for lowering the flow rate by interfering with the flow of water by reducing the flow cross sectional area inside the water supply pipe 11.

However, the conventional pressure reducing device having the above-described configuration has a disadvantage that the degree of pressure reduction can not be controlled. That is, the water pressure in the downstream of the rotor 17 can not be lowered as desired. The rotor 17 receives the kinetic energy of water and simply rotates to produce electricity. Once the rotor 17 starts to rotate, it can no longer function as a resistor in the flow field.

Moreover, since the water is moved by the rotation of the rotor 17 due to the action of the guide hills 13 and 15, the structure functions to function as a resistor.

In addition, the decompression apparatus described above is not so good at power generation efficiency. As shown, the guide hills 13 and 15 guide the stream line of water in the direction of the arrow a, but unless 100% of the water passes through the lower portion of the rotor 17, 17 in the direction of the arrow b and interferes with the rotation of the rotor.

In order to solve the problems of the related art as described above, the present applicant has filed a power generation-type decompression device for a water supply pipe which can control the water pressure of water and improve the power generation efficiency through Korean Patent No. 10-1245450.

However, even in the case of the registered patent of the present applicant, there have been found areas that need to be improved when applied to actual sites. For example, the configuration of the power transmission device for transmitting the rotational force of the shaft connected to the propeller to the power generation section and the configuration for braking the shaft are complicated. In addition, when installed inside the housing in which the fluid flows, In addition, it has been found that the durability is weak and troublesome work for repairing and repairing is troublesome.

Korean Patent No. 0-1245450

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a power generating type pressure reducing device for a water supply pipe which is simple in structure and improved in durability and easy to maintain and repair and exchange.

According to an aspect of the present invention, there is provided an apparatus for generating electricity in a water supply pipe for a water supply pipe, comprising: a device body having a pipe shape with both open ends and an open mouth opening outward; A propeller installed inside the apparatus main body; A main shaft connected to the rotation center of the propeller; An inner housing rotatably supporting the main shaft and accommodating the main shaft, the inner housing being disposed inside the apparatus main body through the opening; An outer housing connected to the inner housing to communicate with the inner housing and coupled to close the opening; A sub-shaft rotatably installed in the outer housing; A power transmission unit transmitting the power of the main shaft to the sub shaft; A power generation unit that receives power from the sub-shaft and generates power; A power storage unit for storing electric energy produced by the power generation unit; An electromagnetic brake for selectively suppressing rotation of the sub axis; A water pressure sensor for measuring a water pressure in the apparatus main body; And a control unit for controlling the operation of the electromagnetic brake based on the measured water pressure value measured by the water pressure sensor to control the rotational speed of the propeller.

Here, the power transmission unit includes a drive pulley installed on the main shaft; A driven pulley installed on the sub shaft; And a power transmission belt mounted to the drive pulley and the driven pulley to transmit the rotational force of the main shaft of the drive pulley to the sub-shaft.

The apparatus may further include a belt tension adjusting unit installed on the outer housing to adjust a tension of the power transmission belt.

Preferably, the electromagnetic brake selectively brakes the sub-shaft installed on the outer side of the outer housing and protruding to the outside of the outer housing.

The apparatus may further include a hydrotreater installed in the apparatus main body and adapted to activate the electron energy of the fluid flowing in the apparatus main body by receiving power from the power storage unit.

According to the power generation type decompression apparatus for a water supply pipe of the present invention, it is possible to easily adjust the water pressure of a fluid flowing through a water supply pipe provided in a water supply pipe.

In addition, since the power transmission portion and the sub shaft for transmitting the rotational force of the main shaft coupled to the propeller to the power generation portion are provided inside the inner housing and the outer housing so as to be blocked without being immersed in the fluid, It is possible to prevent deterioration of durability caused by the above.

In addition, it is easy to install the components inside the apparatus main body by providing an opening in the main body of the apparatus and connecting the inner housing and the outer housing through the openings so that the components can be easily installed inside the apparatus main body. There is an advantage in that the internal parts can be separated and inspected and repaired.

In addition, the electronic brakes for controlling the speed of rotation of the propeller are installed on the outside of the main body of the apparatus so as to safely protect the electronic brakes operated by electrical signals from humidity, thereby improving the durability and preventing malfunctions and malfunctions And the reliability of the apparatus can be improved. That is, there is an advantage that the reduced pressure state of the fluid can be linearly controlled.

1 is a schematic view showing a conventional pressure reducing device.
2 is a cross-sectional view of a power generation-type reduced pressure device for a water supply pipe according to an embodiment of the present invention.
3 is a plan view of the power generation-type decompression apparatus for a water supply pipe shown in Fig.
4 is a left side view of the power generation-type decompression apparatus for a water supply pipe shown in Fig.
5 is a right side view of the power generation-type decompression apparatus for the water supply pipe shown in Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a power generating type pressure reducing apparatus for a water supply pipe according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 to 5, a power generation type decompression apparatus 100 for a water supply / discharge pipe according to an embodiment of the present invention includes a pipe-shaped device body 110 having both ends thereof opened, A main shaft 130 connected to the rotational center of the propeller 120 and an inner housing 141 rotatably supporting the main shaft 130 and an inner housing 141 rotatably supporting the inner shaft 141, A sub shaft 150 rotatably installed in the outer housing 143 and a sub shaft 150 connected to the main shaft 130. The sub shaft 150 is connected to the sub shaft 150, A power storage unit 170 that generates power by receiving the rotational force of the sub shaft 150, a power storage unit 180 that stores electric energy produced by the power generation unit 170, 150 to selectively control the electromagnetic brake 190, the hydraulic pressure sensor 210 for measuring the hydraulic pressure in the apparatus main body 110, the apparatus main body 110 And a control unit 230. The control unit 230 controls the hydrotreater 220 and the control unit 230,

The apparatus main body 110 has a pipe structure with both ends opened, and flange portions 111 are formed at both ends. The apparatus main body 110 can be connected to the water supply pipe 30 by fitting the flange portion 111 in a state in which the flange portion 111 is in tight contact with the flange portion 31 of the water supply pipe 30. Here, the water supply pipe 30 is a term that encompasses both the water supply pipe and the drain pipe. The inner diameter of the apparatus main body 110 has an inner diameter corresponding to the inner diameter of the water supply pipe 30.

A fixing bracket 60 for fixing and supporting the apparatus main body 110 in a stable posture with respect to the base 50 is coupled to the lower portion of the apparatus main body 110.

A flange 113a to be coupled with the outer housing 143 is formed at an upper end of the opening 113. The flange 113a is formed on the upper side of the apparatus main body 110 do.

The propeller 120 is rotatably installed inside the apparatus main body 110 and is rotated by kinetic energy (flow energy) of the fluid. One end of the main shaft 130 is coupled to the rotation center of the propeller 120 to be integrally rotated.

The main shaft 130 is rotatably supported while being accommodated in the inner housing 141. The inner housing 141 has a structure in which one end of the inner housing 141 protrudes to the outside of the apparatus main body 110 through the opening 113, and the upper end of the inner housing 141 is opened. The other end (lower end side) of the inner housing 141 has a clogged structure (sealed structure) so that the inflow of the fluid flowing in the apparatus main body 110 is blocked while entering the inside of the apparatus main body 110. The main shaft 130 is rotatably connected to the bearings 133 supported by the retainers 134 on both side walls of the inner housing 141 and is rotatably supported on both sides of the inner housing 141 provided with the bearings 133 The wall is kept sealed by the retainer 134 to prevent fluid from flowing into the interior.

A coupling flange 141a is formed on an open outer end of the inner housing 141. The coupling flange 141a is coupled to a coupling flange 143a provided at the lower end of the outer housing 143. [ The outer housing 143 is coupled to communicate with the inner housing 141 while supporting the inner housing 141 and is coupled to cover the opening 113. That is, the coupling flange 143a of the outer housing 143 is coupled to the coupling flange 113a of the opening 113 to close the opening 113, while the outer housing 143 is communicated with the inner housing 141 .

A sub shaft 150 is rotatably installed in the outer housing 143 and the sub shaft 150 is disposed in parallel with the main shaft 130. Both ends of the sub shaft 150 are installed so as to extend outwardly through both side walls of the outer housing 143. One side of the sub shaft 150 is rotatably supported by a bearing 146 supported by a retainer 145 with respect to the outer housing 143. [

The power transmission unit 160 includes a drive pulley 161 installed on the main shaft 130 and a driven pulley 163 and a drive pulley 161 provided on the sub shaft 150 and a driven pulley 163 And a power transmitting belt 165 for transmitting the power. The power transmission belt 165 is preferably a timing belt and is installed to run on an endless track between the drive pulley 161 and the driven pulley 163 to transmit the rotational force of the main shaft 130 to the driven shaft 150 .

It is preferable to further include a belt tension adjusting unit 166 for adjusting the tension of the power transmission belt 165. The belt tension adjuster 166 includes a tension roller 166a which is rotatably installed inside the outer housing 143 and contacts the outside of the power transmission belt 165 to guide the running, A roller bracket 166b for supporting the roller bracket 166b and a position adjusting portion 166c for adjusting the position of the roller bracket 166b. The roller bracket 166b rotatably supports both ends of the axis of the tension roller 166a and is installed movably inside the outer housing 143. [ The position adjusting unit 166c is installed to penetrate the outer housing 143 in and out. The position adjusting portion 166c includes an adjusting screw 167a having one end connected to the roller bracket 166b and the other end screwed through the outer housing 143 and an adjusting screw 167a connected to the outer end of the adjusting screw 167a And a handle 167b. Accordingly, when the user holds the knob 167b and rotates, the adjusting screw 167a rotates and moves out of the outer housing 143 according to the rotating direction or enters the inside of the outer housing 143, thereby adjusting the position of the roller bracket 166b . As a result, the tension of the tension roller 166a can be adjusted by adjusting the pressing force of the tension roller 166a against the power transmission belt 165, so that the rotational force of the main shaft 130 can be effectively transmitted to the sub shaft 150.

The power generation unit 170 may include a generator 175 having a shaft 173 connected to the sub shaft 150 by a coupler 171 and receiving power. The power generating unit 170 having such a configuration receives the rotational force of the sub shaft 150 through the coupler 171 to generate electric energy. The generator 173 of the generator 170 is fixed to a support bracket 176 fixed to the outside of the apparatus body 110.

The electric energy generated in the power generation unit 170 is supplied to the power storage unit 180 connected to the power generation unit 170 and stored. The power storage unit 180 may be disposed outside the apparatus body 110 or separately. The electrical energy stored in the power storage unit 180 may be supplied to the external power load 240 or may be selectively supplied to the hydrotreater 220. Here, the electric power load 240 may include various electric devices, lights, and the like installed on the ground around the water supply pipe 30. For example, it can be used as a power source for a nearby street lamp or fire hydrant.

The electromagnetic brake 190 is installed at the tip end of the sub shaft 150, that is, the tip protruding outward from the outer housing 143. The electromagnetic brake 190 is controlled by the controller 230 to control the rotation speed of the sub shaft 150 can do. The electromagnetic brake 190 is operated as a so-called electronic clutch brake in response to the control signal of the control unit 230 to provide a load to the sub shaft 150 to control the rotation speed. The rotation speed of the propeller 120 can be controlled as a result of controlling the rotation speed of the sub shaft 150, so that the water pressure of the fluid flowing in the apparatus main body 110 can be controlled. That is, the water pressure on the downstream side of the propeller 120 can be adjusted linearly (so-called lenear).

The water pressure sensor 210 measures the pressure of the fluid flowing in the apparatus body 110, that is, the water pressure, and the measured water pressure information is transmitted to the controller 230.

The hydrotreater 220 receives electric power from the power storage unit 180 and applies the electric power to the water to activate the energy of water molecules. The hydrotreater 220 includes a plurality of electrodes 221 and 222 installed inside the apparatus body 110, And an electrode supporting part 223 for supporting the electrode supporting part 223. When current is applied to the fluid flowing through the apparatus main body 110 through the hydrotreater 220, the electron energy of the water molecules is activated, thereby preventing the generation of scales and enemies. The enemy means the green.

For example, when a direct current of 1.5 volts to 3 volts is applied to the water passing through the apparatus main body 110, the ion structure of various minerals in water as well as water molecules changes into negative ions to suppress scale formation and soften the water quality As well as the production of bacteria.

The control unit 230 selectively controls the operation of the electromagnetic brake 190 based on the hydraulic pressure measurement information transmitted from the hydraulic pressure sensor 210 to control the rotational speed of the propeller 120, Thereby regulating the hydraulic pressure of the flowing fluid to a constant level. The control unit 230 controls the power supply to the power load 240 by controlling the battery 180 and controls the application of current to the hydrotreater 220.

The power generation type decompression apparatus 100 for a water supply pipe according to the embodiment of the present invention having the above-described structure can reduce the pressure in the downstream of the propeller 120 by the rotation of the propeller 120 in the water flowing in the apparatus main body 110 can do. The energy due to the reduced pressure is transferred to the power generating unit 170 through the main shaft 130 and the sub shaft 150 to be generated as electric energy and the generated electric energy can be stored in the battery 180 and used.

At this time, the rotational speed of the propeller 120 can be actively controlled by the controller 230, and the degree of pressure reduction by the propeller 120 is adjusted according to the water pressure measured upstream of the propeller 120, Can be linearly controlled and controlled. That is, since the propeller 120 can be prevented from rotating, slowly rotated, or rotated by being pushed by water without resistance to the water pressure, by controlling the electromagnetic brake 190, Can be controlled.

The power transmission unit 160 includes a power transmission belt 165 that is not immersed in water in the main body 110 when transmitting the rotational force of the main shaft 130 to the sub axis 150, It is possible to prevent the loss of the rotational force at the time of power transmission due to the resistance of the water, so that the rotational speed of the propeller 120 can be controlled more precisely.

Further, durability can be improved by preventing the power transmitting portion 160 from being immersed in water, and it is possible to easily check and work the inside of the outer housing 143 by separating only the outer housing 143 without stopping the flow of water even during trouble- There is an advantage.

In addition, since the electromagnetic brake 190 for controlling the rotational speed of the propeller 120 is installed outside the apparatus main body 110, it is possible to fundamentally solve the problems of being immersed in water or malfunctioning or failing due to water contact, And the speed of the propeller 120 can be controlled more precisely, thereby improving the reliability of the apparatus. In other words, conventionally, there is a problem that since the electronic brake is installed in a state in which the electronic brake is immersed in the water, the installation is difficult and the reliability is low and precise control is difficult after installation. However, It is possible to solve the conventional problems by providing the electromagnetic brake 190 to be connected to the sub shaft 150 installed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Those skilled in the art will readily appreciate that many modifications and variations of the present invention are possible without departing from the spirit and scope of the appended claims.

100. Power Generation Type Decompression Device for Water Supply Pipe 110 .. Device Main Body
120 .. Propeller 130 .. Main Axis
141. Inner housing 143 .. Outer housing
150 .. sub shaft 160 .. power transmission part
170. Power generator 180. Power generator
190 .. Electromagnetic brake 210 .. Hydraulic sensor
220 .. hydrotreater 230 .. controller

Claims (5)

An apparatus body having a pipe shape having open ends at both ends and having an opening portion open to the outside;
A propeller installed inside the apparatus main body;
A main shaft connected to the rotation center of the propeller;
An inner housing rotatably supporting the main shaft and accommodating the main shaft, the inner housing being disposed inside the apparatus main body through the opening;
An outer housing connected to the inner housing to communicate with the inner housing and coupled to close the opening;
A sub-shaft rotatably installed in the outer housing;
A power transmission unit transmitting the power of the main shaft to the sub shaft;
A power generation unit that receives power from the sub-shaft and generates power;
A power storage unit for storing electric energy produced by the power generation unit;
An electromagnetic brake for selectively suppressing rotation of the sub axis;
A water pressure sensor for measuring a water pressure in the apparatus main body;
And a control unit for controlling the operation of the electromagnetic brake based on the measured water pressure value measured by the water pressure sensor to control the rotational speed of the propeller. The power transmission unit according to claim 1,
A drive pulley installed on the main shaft;
A driven pulley installed on the sub shaft; And
And a power transmission belt mounted to the drive pulley and the driven pulley so as to be able to travel and transmit the rotational force of the main shaft of the drive pulley to the sub-shaft. 3. The method of claim 2,
Further comprising a belt tension adjuster installed in the outer housing to adjust a tension of the power transmission belt. 4. The method according to any one of claims 1 to 3,
Wherein the electromagnetic brake selectively brakes the sub-shaft installed outside the outer housing and protruding to the outside of the outer housing. 4. The method according to any one of claims 1 to 3,
Further comprising a hydrotreater installed inside the apparatus main body and adapted to activate electronic energy of fluid flowing in the apparatus main body by receiving power from the power storage unit.

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