KR101392847B1 - Booster pump combined with water hammer preventive equipment - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure pump combined with a water hammer prevention device, and more particularly, to a pressure pump combined with a water hammer prevention device having a device for preventing the water hammer and a pressurizing pump for supplying water to the pipe.
The pressure pump includes a pressure pump unit connected to a conduit and having at least one pressure pump for pressurizing the water in the water reservoir and supplying the water to the conduit; A pressure tank filled with water and air, the pressure tank being connected to the conduit and absorbing a water hammer generated in the conduit; The upper part of the container is connected to the intake / exhaust valve through an air replenishing pipe, the lower part is connected to the pipe, and the lower part is connected to the water reservoir for maintaining the water level of the pressurizing tank. An air replenishing device for replenishing air into the pressurizing tank through control according to opening and closing of the pipe; And the air intake part is connected to the air replenishing device through an outside air and an air replenishing pipe, and the exhaust part connects the air replenishing device and the pressure tank through the air replenishing pipe And an intake and exhaust valve.

Description

{BOOSTER PUMP COMBINED WITH WATER HAMMER PREVENTIVE EQUIPMENT}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pressure pump combined with a water hammer prevention device, and more particularly, to a pressure pump combined with a water hammer prevention device having a device for preventing the water hammer and a pressurizing pump for supplying water to the pipe.

Figure 5 shows a pressurized feed system of a water supply zone.

As shown in the figure, the pressurization supply system of the water supply zone includes a water supply source 51, a water intake pump 53 for feeding water from the water supply source 51 along the water pipe 52, A water supply pump 57 for pressurizing the purified water and transferring the purified water along the water pipe 56; A water hammer prevention facility 58 for preventing the water hammer of the water supply pipe 56, a water storage tank 59 for temporarily storing the water supplied from the water purification plant 55, and a water supply pipe 60 to the water supply area and a water hammer prevention facility 62 for preventing water hammer of the water supply pipe 60.

The water intake pump 53, the water feed pump 57 and the pressurization pump 61 are necessary for the pressurized supply system as a pressurizing pump for supplying the water stored along the channel to the destination.

In addition, the water hammer prevention facilities (54, 58, 62) are water hammer (water hammer) which can be generated in the pipeline in a facility for sending water produced by using a high-pressure large- And the like), which is an essential device in the pressure pump system.

However, in the conventional tap water supply system, the pressurizing pumps 53, 57, and 61 (not shown) are used to supply water from the water supply tank 59 or the water storage tank 59 to the water supply area, And the water hammer prevention devices 54, 58, and 62 for preventing water hammer are installed independently at the rear end thereof, resulting in double installation problems.

Also, the water hammer prevention devices 54, 58, and 62 use a pressurizing tank, in which air compressors capable of replenishing air are connected.

However, the capacity of the compressor is inevitably increased by the water hammer prevention equipment depending on the size of the pipeline. In particular, the compressor driving motor mounted on the water hammer prevention equipment in the water line requires a large power of 380 V of three phases.

There is a problem in that the supply of the three-phase power reaches the site of the pressure field, the size of the control panel must be large, and the space required for installation of the compressor and installation of the large control panel must be increased. Particularly, there is a problem of energy over consumption due to the operation of the compressor of the 3-phase 380V power. Also, considering that the noise due to the operation of the compressor is large and the unmanned pumping station, maintenance is difficult and maintenance cost is high.

In order to solve the above-mentioned problems, it is an object of the present invention to provide a water hammer prevention system which can simplify construction and reduce installation cost by forming a separate constitution of a pressure pump and a water hammer prevention facility in a water supply system Pressure pump.

Also, it is possible to operate with a single phase power without using a compressor and connect a simple non-powered air replenishment device to a pressure tank to provide an energy-saving water hammer prevention facility that can save energy, have no noise, I want to.

According to an aspect of the present invention, there is provided a water hammer prevention device for a water hammer prevention system, comprising: a pressurizing pump unit connected to a conduit and having at least one pressurizing pump for pressurizing water in a water reservoir to supply the water to the conduit; A pressurizing tank filled with air and connected to the pipe to absorb a water hammer generated in the pipe; an apparatus for replenishing air to maintain a proper water level of the pressurizing tank, And an air replenishing device connected to the lower side of the lower side and connected to the water reservoir to supplement air into the pressure tank through pressure control according to opening and closing of the channel, And the air intake part is connected to the air replenishing device through the outside air and the air replenishment pipe, Vent portion comprises an intake and exhaust valve for connecting the air replacement device and the pressure tank through the air replenishment pipe.

Here, the air replenishing device has a connection pipe connected to the pipe, and a connection pipe connected to the water storage tank, and a solenoid valve is mounted to the connection pipe connected to the water storage tank, and the solenoid valve is connected to the water level of the pressure tank It is preferable that the control signal is opened and closed.

Here, a solenoid valve for discharging the high-pressure gas to the outside is formed at the upper end of the pressure tank, and the solenoid valve is composed of first to third solenoid valves, It is preferable that the three-way valve is set so that one or more of them are opened stepwise or simultaneously according to the pressure reference of the generated high-pressure gas.

According to the structure of the present invention described above, in the water supply system, the separate constitution of the pressure pump and the water hammer prevention facility can be formed by one facility, thereby simplifying the construction and reducing the installation cost. It is possible to provide a water hammer prevention facility equipped with a pressurizing pump that can save energy and space efficiency by using a non-powered air replenishing device.

1 is a system block diagram of a pressure pump combined with a water hammer prevention device according to the present invention.
2 is a cross-sectional view of a suction and discharge valve used in a pressure pump combined with a water hammer prevention device according to the present invention.
3 is a view for explaining the configuration of the air replenishing device of the pressure pump combined with the water hammer prevention device according to the present invention and the process of the intake and exhaust device.
4 is a flow chart of pressure control using a pressure pump combined with a water hammer prevention device according to the present invention.
5 is a prior art water supply system for a water supply zone.

Hereinafter, the construction of the pressure pump combined with the water hammer prevention device according to the present invention, the pressure control flow process, and effects will be described with reference to the accompanying drawings.

1 is a system block diagram of a pressure pump combined with a water hammer prevention device according to the present invention.

1, the pressure pump combined with the water hammer prevention device according to the present invention includes a pressure pump unit 1, a water hammer prevention facility 2, and a control panel 3.

One or more pressurizing pumps 12a, 12b and 12c are connected to the pipeline 11 so that the pressurizing pump part 1 pressurizes the water in the channel 11 and transfers it to a destination.

The water hammer prevention facility 2 includes a pressurizing tank 13, an air replenishing device 14, and an intake and exhaust valve 15.

The pressurizing tank 13 is connected to the conduit 11 for preventing water hammer, and is a pressure tank in which water is contained in the lower portion of the pressure vessel and pressurized air is formed thereon.

When the water hamming in the pressurizing tank 13 occurs, the pressure of the water rises and the air absorbs the pressure in the rising pipe because it is a compressible gas. Therefore, since the air is dissolved in the water in the pressurizing tank 13 and the air layer is consumed, it is necessary to constantly replenish the air to keep the air layer constant.

The upper end of the pressurizing tank 13 is connected to the intake and exhaust valve 15 through the connection pipe and the lower end is connected to the pipe 11 through the connection pipe.

The air replenishing device 14 is a container for replenishing air into the pressurizing tank 13, replacing a conventional three-phase compressor requiring a large power of 380V.

The air replenishing device 14 is connected to the intake and exhaust valve 15 via an air replenishing line 16 at an upper portion thereof and to the pipe line 11 through a connecting pipe at one end of the lower end thereof, (Not shown) through the connecting pipe 17 and the connecting pipe.

The intake and exhaust valve 15 has a structure of a three-way valve that is divided into an intake portion and an exhaust portion and communicated with each other, and has an intake passage, an exhaust passage, and an intake and exhaust passage.

2 is a cross-sectional view of a suction and discharge valve used in a pressure pump combined with a water hammer prevention device according to the present invention.

The inside of the main body 18 is divided into an intake part 19a and an exhaust part 19b and the lower part is communicated with the lower part of the exhaust part 19b at the left side and the lower end thereof with a pressurizing tank connection pipe 20a, (20b) is formed.

An intake valve cover 24, a spring 23, an intake opening / closing door 29 and an intake valve seat 28 are disposed in this order in the intake portion 19a formed in the main body 18, A plurality of air inlets are provided on the outer surface of the filter 26, and the cap 27 is covered to constitute an intake portion. The upper end of the intake opening and closing door 29 becomes a conical opening and closing door covered with an O-ring 25 and the lower end guide rod 21 is inserted into the center hole 22 of the intake valve cover 24 to move up and down, The intake opening / closing door 29 comes into contact with the upper intake valve seat 28 due to the elasticity of the spring 23 and is closed upward.

The exhaust valve seat 34 and the exhaust opening / closing door 32 are provided in the exhaust portion 19b formed in the main body 18 and then the exhaust valve cover 31 is screwed to the female screw of the main body 18 to constitute an exhaust portion .

O rings 33a, 33b, 33c are provided for sealing between the exhaust valve seat 34 and the main body 18, between the exhaust valve seat 34 and the exhaust opening door 32, and between the exhaust valve cover 31 and the main body 18, 33c.

The exhaust valve seat 34 is formed with a guide groove 34a and the exhaust opening and closing door 32 is formed with a guide rod 32a so that the guide rod 32a is guided by the guide groove 34a And is normally in a closed state in contact with the exhaust valve seat 34 due to the weight of the exhaust opening / closing door 32.

3 is a view for explaining the configuration of the air replenishing device of the pressure pump combined with the water hammer prevention device according to the present invention and the process of the intake and exhaust device.

Fig. 3 (A) is a flow chart of the intake process, and Fig. 3 (B) is a flow chart of the exhaust process.

First, when looking at the intake process of (A), the solenoid 17 is opened according to the signal.

As the solenoid 17 is opened, the water in the duct runs out through the first and second connectors 39a and 39b to the reservoir side by the pressure difference along the orifice nozzle 37.
The orifice nozzle 37 is connected to a first connection port 39a connected to the pipeline 11 and is coupled to one side of the air replenishing device 14. The pressure control port 38 is connected to a second connection port 39b and is fastened to the other side of the opposite side air replenishing device 14 to which the orifice nozzle 27 is coupled.
The tip end of the orifice nozzle 27 in the air replenishing device 14 is located inside the tip end portion of the pressure control member 38. [ The inner diameter of the orifice nozzle 27 becomes narrower toward the distal end portion. The inner diameter of the pressure control metal fitting 38 becomes narrower toward the inner side from the distal end portion, and gradually becomes larger at one point.

A jet flow due to a pressure difference is formed between the orifice nozzle 37 and the pressure control bracket 38 in such a state that the water pressure inside the air replenishing device 14 is lowered to generate a negative pressure, The intake portion 19a is opened by a pressure difference, and outside air is introduced.

Then, referring to the exhausting process (B), the solenoid valve 17 is closed when a predetermined time (for example, 50 seconds) elapses. Backward.

The refluxed air is exhausted to the pressurizing tank 13 through the pressurizing tank connecting pipe 20a of the evacuation section 19b, and air is replenished into the pressurizing tank 13. [ At this time, the intake portion 19a is closed by a downward air pressure.

The air replenishing device 14 replenishes air into the pressurizing tank 13 through opening and closing of the solenoid valve 17 without any separate motor operation. Such air replenishment can be controlled according to the amount of water in the pressurized tank 13, such as when the water level rises in the pressurized tank and when a water hammer occurs.

FIG. 4 is a control flowchart using a pressure pump combined with a water hammer prevention device according to the present invention.

The control panel (3) can be manufactured in a small size with a single-phase 220V capacity unlike the conventional one, which saves considerably more energy when using a conventional compressor than when using a 3-phase 5.5kW 380V control panel .

The three main pressurization pumps 12a, 12b and 12c of the pressurizing pump section 1 pressurize the water in the reservoir (or a water purification plant or a water supply source) and supply the water into the pipeline 11.

A connection pipe for connection with the intake and exhaust valve 15 is formed at the upper end of the pressure tank 13 and the first to third solenoid valves 46a, 46b and 46c for high pressure gas discharge are connected.

A level maintenance level gauge sensor 47 that maintains the water level in the pressurizing tank 13 may be mounted on the side surface of the pressurization tank 13.

The throttle valve 43, the electromotive valve 44 and the check valve 45 are formed at the lower end of the pressurizing tank 13 to allow the fluid to be absorbed at the time of connection with the conduit 11 and generation of the water hammer.

The throttling valve 43 means a valve which changes the cross-sectional area of the passage and regulates the pressure and the flow rate by the throttling action.

The connection pipe is connected to the intake and exhaust valve 15 via the valve and the intake and exhaust valve 15 is connected to the air replenishing device 14 through the air supplement pipe 16 again.

The air replenishing device 14 is connected to the condensate through a solenoid valve 17 as one side, and is connected to the duct 11 through the valve on the other side (opposite direction).

The first to third solenoid valves 46a, 46b, and 46c are used to discharge a high-pressure gas in accordance with the water introduced into the channel 11 when a water hammer occurs.

The first to third solenoid valves 46a, 46b, and 46c are solenoid valves, and operate according to a predetermined mechanism according to an external signal.

In the water hammer prevention system of the present invention, three solenoid valves are used, and at least one of the three solenoid valves is operated according to the set value of the pressure to efficiently discharge abnormal high pressure.

When a small pressure is generated according to the pressure generated by the water hammer ring, only the first solenoid valve 46a can be operated to discharge the high pressure gas, and when a higher pressure is generated, the first and second solenoid valves 46a, 46b are operated to discharge the high pressure gas. When a higher pressure is generated, the first to third solenoid valves 46a, 46b, 46c are operated to discharge the high pressure gas.

For example, the first solenoid valve 46a is used for 15A, the second solenoid valve 46b is used for 25A, the third solenoid valve 46c is used for 40A, and the reference pressure of the generated high-pressure gas is 5 kg / The first and second solenoid valves 46a and 46b are activated when a pressure of 8 kg / cm2 is generated, and the first and second solenoid valves 46a and 46b are operated when a pressure of 10 kg / The third solenoid valves 46a, 46b, and 46c can be actuated to efficiently discharge the high-pressure gas.

In the thus constructed water hammer prevention system, when a water hammer occurs, the water in the channel 11 flows into the channel 11 according to the operation of the valves 43, 44 and 45, And the high pressure gas is discharged to the outside by the operation of the first to third solenoid valves 46a, 46b, 46c so that the water hamming of the pipeline 11 can be eliminated.

The water level in the pressurizing tank 13 must be maintained at a certain level for water hammer prevention (water hammering absorption). The reference water level is maintained between the water level L and the water level H and the water level is adjusted from the water level H to the water level L by the inflow of air.

When the water level is detected at the water level H, the solenoid valve 17 is operated and opened. At this time, the water in the channel 11 is discharged by the orifice nozzle 37 and the pressure control bracket 38, A negative pressure is generated in the replenishing device 14.

The intake portion 19a of the intake and exhaust valve 15 is opened according to the occurrence of the negative pressure so that the air flows into the air replenishing device 14 through the air replenishing piping 16 After a lapse of time (approx. 50 seconds), the signal is closed in accordance with the signal, and the inhaled air is countercurrent (reversing the intake and exhaust).

The refluxed air exits through the exhaust part 19b of the intake and exhaust valve 15, and air flows into the pressurizing tank 13 through the connection pipe (exhaust path b).

The inflow air pressure lowers the level of the flow rate in the pressurizing tank 13, and the inflow of air continues to progress until the level L is reached.

As described above, since the water hammer prevention system according to the present invention uses the non-powered air replenishing device, the use of the single phase control panel makes it possible to downsize the water hammer, and the total energy consumption is remarkably reduced, . In addition, it is not limited by the installation space of the air compressor (usually two or more units), and vibration and noise are not generated due to frequent operation of the air compressor, thus making it possible to construct a highly environmentally friendly water hammer prevention facility.

In addition, since the air replenishing device is used in place of the existing compressor, a pressure pump for supplying water by raising the water pressure in the pipeline has to be separately installed. However, Therefore, it is possible to solve the problem of a space problem in which the pressurized pump and the water hammer protection facility must be installed separately, and an increase in the installation cost.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, As will be understood by those skilled in the art. Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

1: Pressurizing pump part 2: Water hammer prevention equipment
3: control panel 11: conduit
12a, 12b, 12c: pressure pump 13: pressure tank
14: air refill device 15: intake and exhaust valve
16: air replenishment piping 17: solenoid valve
18: main body 19a:
19b: exhaust part 20a: pressure tank connection pipe
20b: air replenishing device connection port 21: guide rod
22, 36: center hole 23: spring
24: intake valve cover 25, 33a, 33b, 33c: O-ring
26: filter 27, 35: cap
28: intake valve seat 29: intake opening door
31: exhaust valve cover 32: exhaust opening door
34: exhaust valve seat 32a: upper guide rod
32b: lower guide rod 32c: exhaust groove
32d: wing flange 32e: O-ring groove
37: Orifice nozzle 38: Pressure control bracket
43: Throttle valve 44: Electric valve
45: Check valves 46a, 46b, 46c:
47: Level maintenance level gauge sensor

Claims (4)

A pressurizing pump unit having at least one pressurizing pump connected to a conduit for pressurizing the water in the reservoir and supplying the pressurized water to the conduit;
A pressure tank filled with water and air, the pressure tank being connected to the conduit and absorbing a water hammer generated in the conduit;
The upper part of the container is connected to the intake / exhaust valve through an air replenishing pipe, the lower part is connected to the pipe, and the lower part is connected to the water reservoir for maintaining the water level of the pressurizing tank. An air replenishing device for replenishing air into the pressurizing tank through control according to opening and closing of the pipe;
And the air intake part is connected to the air replenishing device through an outside air and an air replenishing pipe, and the exhaust part connects the air replenishing device and the pressure tank through the air replenishing pipe And an intake and exhaust valve. The method according to claim 1,
The air replenishing device has a first connection port connected to the pipeline at one side thereof and a second connection port connected to the pipe of the reservoir at the other side.
Wherein a solenoid valve is mounted on the pipe connected to the second connection port, and the solenoid valve is opened and closed by receiving a control signal according to the level of the pressure tank. 3. The method of claim 2,
An orifice nozzle is formed inside the first connection port, a pressure control metal is formed inside the second connection port,
Wherein the orifice nozzle and the pressure control bracket are positioned through the air replenishing device,
And the distal end portion of the orifice nozzle is located inside the tip end portion of the pressure control member. The method according to claim 1,
An electromagnetic valve for discharging the high-pressure gas to the outside when the water hammer occurs in the conduit is formed on the upper side of the pressure tank,
Wherein the solenoid valve comprises first to third solenoid valves,
Wherein the first to third solenoid valves are set such that at least one of them is opened stepwise or simultaneously according to a pressure reference of the generated high-pressure gas.

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