KR200177665Y1 - Mitigation device of the water shock - Google Patents

Abstract

The present invention relates to a water shock mitigation device to prevent the water in the pipeline supplied to the drainage flow back to the pressurized pump when the water supply is interrupted due to sudden power failure, etc. to prevent damage to the pressurized pump or the pipeline.

In the present invention, when the water shock is alleviated or absorbed, an upward pressure is transmitted during the water shock so that the air is compressed in the air chamber 17, and the shock is alleviated or absorbed. The absorbed shock wave is gradually resolved according to the pressure change of the water pipe. When the impact reaches the highest point or the absorption point, the air compressors 11 and 12 are operated to open the second solenoid valve 16 for air supply, so that the compressed air flows into the air chamber 17 to raise the water level in the chamber 17. When the inlet of the compressed air is stopped and the air discharge valve 23 is opened to reach the set level, the air compressors 11 and 12 are stopped and the second solenoid valve 16 for air supply is closed to stop the inflow of the compressed air. By opening the air discharge valve 23 to discharge the compressed air to the set pressure, it is possible to constantly control the flow of water in the conduit 5 to prevent damage to the pressure pump (1) or conduit (5). One will.

Description

Mitigation device of the water shock}

The present invention relates to a water shock mitigation device, in particular, in order to prevent the water in the pipeline that was supplied to the drainage to flow back to the pressurized pump when the water supply is interrupted due to a sudden power failure, such as to damage the shock by impacting the pressure pump or pipeline. It is.

Conventionally, as shown in FIG. 1, water supplied to each household in the water supply zone 3 is supplied from a drainage basin 2, which is usually located at a high place, so that the pipeline is pumped by a pressure pump 1. The water is to be pumped up to the sump (2) through (5).

In such a conventional water supply device, when the operation of the pressure pump (1) is stopped due to a sudden power outage, etc., the water supply line from the pressure pump (1) to the drain (2) while the water supply line (5) was supplied to the drain (2) The water in the) flows back toward the pressure pump 1 in the direction of the arrow.

Therefore, when the water in the conduit 5 flows backward and descends toward the pressure pump 1, the flow rate changes rapidly and the pressure increases or decreases, causing a transient phenomenon in the fluid.

That is, when the pressure wave travels between the upstream end and the downstream end due to a sudden flow rate change in the conduit 5, the maximum pressure is applied on the pump discharge side, and the minimum pressure is generated under the condensed steam due to the conduit (5). Steam cavities are formed and order separation occurs, and if the pressure in the conduit 5 is lower than atmospheric pressure, buckling may occur in the conduit 5, and high pressure is caused when the orders separated by the steam cavities are recombined. That is, there exists a possibility that the pressure pump 1, the piping 5, etc. may be damaged.

Therefore, in case of more than a certain head, the mitigation device must be installed.

The present invention is to solve such a conventional drawback, the purpose of the present invention, a pressurized pump to prevent damage to facilities such as pipelines or pressure pump due to water shock caused by water flowing back in the pipeline during sudden power failure In order to protect facilities such as pressurized pumps or pipelines from water shock by installing a separate water shock mitigation device on the pressure pump side between the water and the drain.

1 is a schematic overall view of the present invention

2 is a detailed configuration diagram of the present invention water hammer mitigation device

3 is a view showing a connection relationship of the water hammer mitigation means of the present invention

<Explanation of symbols on main parts of the drawing>

1: pressure pump 2: drainage

3: water supply zone 4: water shock mitigation measures

10: control unit 11: first air compressor

12: 2nd air compressor 15: 1st solenoid valve

16: 2nd solenoid valve 17: chamber

21: First float switch 22: Second float switch

23, 26: Air discharge valve 24: Pressure transmitter

25: water gauge

The present invention for achieving the above object is to reduce or absorb the water shock when the water pressure is transferred to the rising pressure during the water shock is compressed or absorbed as the air is compressed in the air chamber, the absorbed shock wave is gradually reduced in accordance with the pressure change of the water pipe When the water shock is reached and the water shock reaches the highest point or the absorption point, the air compressor is operated and the air supply electric valve opens to pressurize the compressed air into the air chamber to lower the water level in the chamber. When the valve is open and reaches the set level, the air compressor stops, the air supply electric valve is closed to stop the inflow of compressed air, and the discharge electric valve is opened to discharge the compressed air to the set pressure.

Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention will be described.

1 is a general configuration of the present invention, a pressure pump 1 for pumping water through a conduit 5, a drainage basin 2 for draining water supplied from the pressure pump 1, and the drainage basin In the water supply system consisting of a water supply zone (3) receiving water from (2), water shock mitigating means (4) is further provided on the pressure pump (1) side between the pressure pump (1) and the drain (2). It is provided with.

2 is a detailed configuration of the water shock mitigation means 4, the control unit 10 for controlling each part, and the first and second compressors 11 and 12 for adjusting the water level by adjusting the pressure in the air chamber And a first and second solenoid valves 15 and 16 driven by the air tank 13 and the condenser 14, and controlled by the control unit 10, for introducing and discharging air in the chamber. The air chamber 17 controls the air, and the manual valve 18 and the automatic valve 19 connected to the conduit 5 at the lower end of the air chamber 17 are configured.

However, when the manual valve 18 is blocked, the automatic valve 19 is configured to operate.

The air chamber 17 has a first float switch 21 for sounding an alarm when the water level reaches the highest point due to an abnormal operation, a second float switch 22 for sounding an alarm when the water level reaches the lowest point, and a lower end. The air discharge valve 23 for discharging air to the outside to prevent the cavitation of the chamber when the water level is further dropped beyond the lowest point, and is located at the top to measure the pressure in the air chamber 17 to control the A pressure transmitter 24 for delivering to the unit 10, a water gauge 25 for measuring the water level and delivering it to the control unit 10, and positioned at the top to allow cavitation of the chamber when the water level rises further past the highest point. It consists of an air discharge valve 26 for discharging air to the outside and a float 28 which is a water level sensor for measuring the water level by moving up and down along the pipe 27 installed up and down at the center to prevent the air. will be.

Hereinafter, with reference to Figures 2 and 3 attached to the operation of the present invention in detail as follows.

First, the water level meter 25 is installed on the top of the air chamber 17 of the present invention, so that the water level is always measured, it can be controlled in the control panel, as well as monitoring / control in the central monitoring panel.

In addition, the first and second air compressors 11 and 12, the first and second solenoid valves 15 and 16, and the air discharge valves 23 and 26 are raised or lowered by a predetermined level or more. Each is operated automatically and the level and pressure in the tank must be adjusted to maintain the proper conditions and are set to mitigate the water shock to the maximum.

In addition, the float 28, which is a water level sensor that determines whether air is in and out of the highest emergency level and the lowest emergency level, It is installed in the air chamber 17.

Meanwhile, the first and second air compressors 11 and 12 should maintain the air pressure and the amount of air in the air chamber 17 properly, and the operation of the first and second air compressors 11 and 12 may be performed. While the control unit 10 is automatically driven by the control signal, manual operation is also possible.

The first and second air compressors 11 and 12 are composed of two, one of which can be operated immediately by replacing another air compressor in case of abnormal use of the air compressor.

The present invention is capable of automatic operation and manual operation. First, automatic operation will be described.

In the automatic operation, each device operates in accordance with the set level, and the water shock is reduced by maintaining the level in the chamber 17.

Initially, in the normal state, the water level in the air chamber 17 is located at level 3.

If water is stopped due to a sudden power failure while water is being supplied from the pressure pump 1 to the drainage basin 3 through the pipeline 5, the water in the pipeline 5 flows backward to the pressure pump 1. Will come down.

Therefore, the water flowing back through the conduit 5 enters the inside of the air chamber 17 installed at the front end of the pressure pump 1 before going to the pressure pump 1.

As such, when water in the conduit 5 flows back into the air chamber 17, the water level at level 3 rises to the level 2 or level 1, which is the highest water shock level, and the mouth 28 is connected to the conduit 27 Will rise upwards.

Therefore, when the water level rises to the level 1 or the level 2 (the highest water shock point), the control unit 10 detects this and drives the first air compressor 11 and the second air compressor 12 to each other. One solenoid valve 15 is operated to introduce compressed air into the air chamber 17.

In addition, when the water level does not rise to level 1 or level 2 but rises to level 2 or level 3 (water shock absorption point), the controller 10 recognizes this and the first air compressor 11 and the second air compressor 12 are recognized. Only one of them is controlled to operate, and in this case, the first solenoid valve 15 is operated to introduce compressed air into the air chamber 17.

That is, when the water in the conduit 5 flows back into the air chamber 17 and rises above the level 3, the compressed air flows into the air chamber 17 to relieve water pressure, thereby reducing the pressure of the pressurized pump 1 by water shock. ) Can be damaged or the conduit (5) can be prevented.

On the other hand, when the water pressure is relieved and the water level is lowered back to level 3 (water shock absorption atmospheric point), the air compressor in operation is stopped, and the first solenoid valve 15 is closed to enter the air chamber 17. Shut off compressed air.

When the internal pressure is higher than the set value, the control unit 10 opens the second solenoid valve 16 to discharge the compressed air in the air chamber 17 to a predetermined pressure.

That is, when water in the conduit 5 flows back and the water shock must be alleviated or absorbed, the air in the air chamber 17 is compressed and the shock is alleviated or absorbed. The absorbed shock wave is applied to the pressure change of the conduit 5. When the water shock reaches the highest point or the absorption point, the air compressor is operated to lower the water level in the air chamber 17 because compressed air flows into the air chamber 17.

When the inflow of the compressed air is stopped and the second solenoid valve 16 is opened to reach the set level, the air compressor is stopped and the first solenoid valve 15 is closed to stop the inflow of the compressed air, and the second solenoid valve 16 is stopped. Open compressed air to a set pressure.

On the other hand, when the pressure pump 1 is stopped, the water level of the air chamber 17 is lowered from level 3 to level 4 (pressure drop point), and in this case, the air discharge valve installed at the lower end of the air chamber 17 ( Air is released through 23 to prevent damage from steam cavities.

The manual operation will be described below.

Manual operation is to manually control the water level and pressure in the chamber 17, and is used for filling and draining during abnormal or initial commissioning of each device.

This manual operation is achieved by on / off of the compressor, open / close of the first solenoid valve 15 or the second solenoid valve 16, on / off of the condenser 14 and other necessary operations.

In addition, according to the present invention, first and second float switches 21 and 22 are installed at upper and lower ends of the air chamber 17 to alert the high water level and the low water level.

First, the high water level alarm occurs when the compressed air is not supplied due to abnormal control of the air compressor or solenoid valve, and the internal pressure in the chamber 17 drops. When the first float switch 21 is turned on to recognize that the high-level state in the control unit 10.

In addition, the low water level alarm is when the water level in the chamber 17 is lowered when the air pressure in the chamber 17 is greater than or equal to the pressure set below the level 3, the low level in the control unit 10 as detected by the second float switch 22 You will be aware of the condition.

The present invention as described above can prevent damage to the pressure pump or pipeline by installing a water shock mitigation device between the pressure pump and the reservoir to mitigate the water shock applied to the pressure pump from the pipeline in case of sudden power failure. It has an effect.

Claims (2)

A pressure pump 1 for pumping water, a drainage basin 2 for draining the water supplied from the pressurization pump 1, and a water supply section 3 for receiving water from the drainage basin 2 In the water supply system, On the pressure pump 1 side between the pressure pump 1 and the drain 2, Control unit 10 for controlling each part, the first and second compressors 11 and 12 for adjusting the water level by adjusting the pressure in the air chamber, the air tank 13 and the condenser 14, the control unit 10 Compressed air when water flows back from the first and second solenoid valves 15 and 16 and the conduit 5 to perform inflow and outflow of air in the air chamber 17. Water shock mitigation device, characterized in that further comprising a water shock mitigating means (4) made of an air chamber (17) to control the water level to maintain the level 3. The method of claim 1, wherein the air chamber 17, The first float switch 21 for sounding an alarm when the water level reaches the highest point due to the abnormal operation, the second float switch 22 for sounding an alarm when the water level reaches the lowest point, and are respectively positioned above and below the water level. Air discharge valves (23) and (26) for discharging air to the outside to prevent the cavitation of the chamber when the temperature rises or falls beyond the highest or lowest point, A water transmission system 24 which transmits to the control unit 10, and a water level meter 25 to measure the water level in accordance with the movement of the float 28 to the control unit 10, characterized in that it comprises a Shock absorber.