KR101539997B1 - Inverter booster pump system and method for smart controlling thereof to save energy - Google Patents

Abstract

The present invention relates to an inverter booster pump system and a smart control method thereof to save energy, which can actively and smartly control operation of an inverter booster pump with a minimum head pressure of a related layer using water. According to the present invention, in an inverter booster pump system, a plurality of inverter booster pumps are installed between a suction pipe and a water supply pipe in parallel. A vertical main pipe is connected to the water supply pipe. Each branch pipe is extended to each floor of a building. A main pressure sensor detects pressure of the water supply pipe. A pressure reduction valve and an auxiliary pressure sensor are respectively mounted on each branch pipe. Each check valve is arranged in a gap of each branch pipe. An inverter booster pump is controlled by a control unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an inverter booster pump system and an energy-

The present invention is characterized in that a plurality of check valves are mounted on a vertical main pipe connected to a water supply pipe, a check valve is disposed between the plurality of branch pipes branched from the vertical main pipes, a pressure reducing valve and an auxiliary pressure sensor are mounted on each branch pipe, The pressure sensor is arranged after the pressure reducing valve to sense the branch pipe hydraulic pressure after the auxiliary pressure sensor has passed through the pressure reducing valve and the control unit controls the inverter booster pump by receiving the measured pressure value from the main pressure sensor and the auxiliary pressure sensor, The present invention relates to an inverter booster pump system capable of actively and smartly controlling the operation of an inverter booster pump at a minimum head pressure of a corresponding layer using water, and an energy saving smart control method thereof.

Korean Patent No. 10-0965845 (registered on June 16, 2010), "inverter booster pump system and control method thereof" is introduced.

The inverter booster pump system includes a third large capacity pump and a fourth large capacity pump, a first small capacity pump having a capacity of one-half capacity of the large capacity pump and a second small capacity pump having a suction pipe connected to the reservoir and a water supply The inverter is installed in the small capacity pump and the large capacity pump, the operation of the inverter is controlled by the control panel, the pressure tank is installed in the water supply pipe, and the sudden hydraulic pressure change of the water supply pipe Wherein when a large capacity pump is driven at a maximum horsepower (60 Hz), the discharge flow rate is set to 100%, the small capacity pump has a maximum discharge flow rate of 50% When the discharge flow rate is 50% or less, the first small capacity pump is driven, and when the discharge flow rate is more than 50% and less than 100%, the operation of the first low- The first small capacity pump and the large capacity pump are driven at the same time when the third large capacity pump is driven and the discharge flow rate is more than 100% and less than 150%, and when the discharge flow rate is more than 150% and less than 200% The third and fourth large capacity pumps and the first small capacity pump are driven, and when the discharge flow rate is more than 200% and less than 250%, the third and fourth large capacity pumps and the first small capacity pump are driven, When the discharge flow rate exceeds 250%, both the third and fourth large capacity pumps and the first and second small capacity pumps are driven.

However, the inverter booster pump system only controls the driving of the pump motor according to the change in the flow rate of the water supply pipe, and does not consider driving the pump motor according to the head.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a water supply system in which a plurality of check valves are mounted on a vertical main pipe connected to a water supply pipe, a check valve is disposed between the plurality of branch pipes branched from the vertical main pipe, And the auxiliary pressure sensor is arranged after the pressure reducing valve to sense the branch pipe water pressure after the auxiliary pressure sensor has passed through the pressure reducing valve and the control unit receives the measured pressure value from the main pressure sensor and the auxiliary pressure sensor, The inverter booster pump system can be actively and smartly controlled to operate the inverter booster pump at a minimum head pressure using the water, thereby saving energy, and its energy saving smart control method is provided will be.

According to an aspect of the present invention, there is provided an inverter booster pump system in which a plurality of inverter booster pumps are installed in parallel between a suction pipe and a water supply pipe, and a vertical main pipe is installed in the water supply pipe, A plurality of branch tubes are branched to the vertical main pipe, each branch pipe extends to each layer of the building, a main pressure sensor is mounted on the water supply pipe, the main pressure sensor senses the pressure of the water supply pipe, And the auxiliary pressure sensor is arranged after the pressure reducing valve so that the auxiliary pressure sensor senses the branching water pressure after passing through the pressure reducing valve and a plurality of check valves are mounted on the vertical main pipe , Each check valve is disposed between the respective branch pipes, and the control unit receives the pressure value from the main pressure sensor and the auxiliary pressure sensor Characterized in that for controlling the drive booster pump.

The inverter booster pump system according to the present invention is characterized in that a plurality of inverter booster pumps are installed in parallel between a suction pipe and a water supply pipe, a vertical main pipe is installed in the water supply pipe so as to correspond to the number of the buildings, A plurality of branch tubes are branched in the vertical main pipe, each branch pipe extends to each layer of the building, a main pressure sensor is installed in the water supply pipe, the main pressure sensor senses the pressure of the water supply pipe, The auxiliary pressure sensor is disposed after the pressure reducing valve, and the auxiliary pressure sensor senses the branching water pressure after passing through the pressure reducing valve, and the vertical main pipe is equipped with a plurality of check valves, Check valves are disposed between the respective branch pipes, and the control unit receives the pressure value from the main pressure sensor and the auxiliary pressure sensor An inverter booster pump system for controlling an inverter booster pump,

① When tuning, the control unit receives the measured pressure from the main pressure sensor of the water supply pipe and the auxiliary pressure sensor attached to each branch pipe. When the measured pressure input from each auxiliary pressure sensor reaches the set pressure, Recognizing the measured pressure inputted from the main pressure sensor as the minimum positive pressure for driving the pump and storing the minimum positive pressure of the main pressure sensor matching the set pressure of each auxiliary pressure sensor,

② When the measured pressure inputted from the auxiliary pressure sensor of the corresponding layer falls below the set pressure by using water in any one layer of the building, until the measured pressure of the auxiliary pressure sensor reaches the set pressure, And controlling the drive of the inverter booster pump so that the measured pressure of the sensor reaches the minimum head pressure of the corresponding layer.

Also, in the energy saving smart control method of the inverter booster pump system according to the present invention, when signals of a plurality of auxiliary pressure sensors are inputted to the control unit by using water in a plurality of layers of two or more layers, And the operation of the inverter booster pump is controlled by the control unit so as to reach and maintain the minimum heading pressure of the high layer.

Thus, the inverter booster pump system and its energy saving smart control method according to the present invention are more efficient than the operation of the inverter booster pump so as to maintain the pressure of the standard heading curve regardless of which layer the water supply pipe uses. The operation of the inverter booster pump can be actively and smartly controlled by the minimum head pressure of the used layer, thereby saving energy.

1 is a schematic view showing an inverter booster pump system according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

1, an inverter booster pump system according to the present invention includes a plurality of inverter booster pumps 10 installed in parallel between a suction pipe L1 and a water supply pipe L2, And a plurality of branch tubes BL1, BL2, BL3, ....., BLn are branched to the vertical main tube L3 so that the branch tubes BL1 ... BLn extend into the respective layers 1f, 2f, 3f ... Nf of the building 30 and the main pressure sensor MP is connected to the water supply pipe L2, The main pressure sensor MP senses the pressure of the water supply pipe L2 and the pressure reducing valves RPV1, RPV2, RPV3, ..., RPV3 are connected to the respective branch pipes BL1, BL2, BL3, ..... BLn. ... PSn are mounted respectively and the auxiliary pressure sensors PS1, PS2, PS3, .... PSn are connected to the pressure reducing valves PS1, PS2, PS2, PS3, .... PSn) are arranged after the pressure reducing valves PS1, PS2, PS3, ... PSn, and the auxiliary pressure sensors PS1, PS2, after CV2, CV3, ..., CVn-1 are mounted on the vertical main pipe L3, and the check valves CV1, CV2, CV3, ..., CVn-1 are mounted on the vertical main pipe L3. And the auxiliary pressure sensors PS1, PS2, PS3, ..., BLn are arranged between the branch tubes BL1, BL2, BL3, ....., BLn, ..., PSn), and controls the inverter booster pump (10).

The check valves CV1, CV2, CV3, ... CVn-1 are supplied to the branch tubes BL1, BL2, BL3, ....., BLn, respectively, in the inverter booster pump according to the present invention, Preventing the backflow of the water in the building (30).

For example, when the driving of the inverter booster pump 10 is stopped, the water filled in each of the branch tubes at a predetermined pressure is not backwashed by the check valves CV1, CV2, CV3, ..., CVn-1 . When the water is used in the second layer 2f, the pressure of the branch pipe RPV2 corresponding to the second layer is lowered, and the auxiliary pressure sensor PS2 of the branch pipe RPV2 is measured And transmits the pressure to the control unit 20. The second check valve CV2 is disposed in the vertical main pipe between the two-layered branch pipe RPV2 and the three-layered branch pipe RPV3. When water is used in the two-layered pipe, The water of the branch tube BL3 is not supplied to the two-layer branch tube BL2.

As a result, only the auxiliary pressure sensor of the layer using water in the building transmits the pressure change of the branch pipe to the control unit 20. That is, when water is used in the second layer, the measured pressure value of the auxiliary pressure sensor PS3 of the three-layered branch pipe RPV3 is kept unchanged, and the auxiliary pressure sensor PS2 of the double- 20) to transmit the lowered pressure value of the two-layer paper tube RPV2.

In the inverter booster pump according to the present invention configured as described above, each of the auxiliary pressure sensors PS1, PS2, PS3, ..., PSn is connected to the pressure reducing valves PS1, PS2, PS3, ..., By measuring the pressure of the branch pipe lowered by the pressure reducing valves PS1, PS2, PS3, ... PSn, the set pressure (for example, 0.6 bar) of all branch pipes becomes equal.

For example, even when the pressure of the vertical main pipe L3 is 6 bar, if the pressure passes through the pressure reducing valves PS1, PS2, PS3, ..., PSn, the pressure of the branch pipe becomes 0.6 bar. Then, when water is used in the layer, the pressure of the branch pipe falls below 0.6 bar.

The energy saving smart control method of the inverter booster pump system according to the present invention constructed as described above is as follows.

(1) At the time of tuning, the control unit 20 measures from the main pressure sensor MP of the water supply pipe L2 and the auxiliary pressure sensors PS1, PS2, PS3, ..., PSn mounted on the respective branch pipes. When the measured pressure inputted from each of the auxiliary pressure sensors PS1, PS2, PS3, ..., PSn reaches the set pressure, the measuring pressure input from the main pressure sensor MP is driven by the pump And stores the minimum head pressure of the main pressure sensor MP that matches the set pressure of each of the auxiliary pressure sensors PS1, PS2, PS3, .... PSn.

That is, at the time of tuning, the control unit 20 determines that the pressure of the main pressure sensor MP is higher than the predetermined pressure (for example, The measuring pressure (for example, 2 bar) is regarded as the minimum heading pressure corresponding to the first layer, and the first-layer minimum heading pressure is stored to match the set pressure of the first-layer auxiliary pressure sensor PS1.

When the measured pressure inputted from the auxiliary pressure sensor PS2 of the second layer reaches a set pressure (for example, 0.6 bar), the control unit 20 sets the measured pressure of the main pressure sensor MP (for example, 2.4 bar) Layer minimum heading pressure, and stores the two-layer minimum heading pressure so as to match the set pressure of the two-layer auxiliary pressure sensor PS1.

In this way, the minimum head pressure of the N layer is stored so as to match the auxiliary pressure sensor PSn of the N layer.

(2) Thereafter, when the measured pressure inputted from the auxiliary pressure sensor of the corresponding layer to the control unit 20 falls below the set pressure by using water in any one layer of the building 30, the measured pressure of the auxiliary pressure sensor becomes equal to the set pressure The drive of the inverter booster pump 10 is controlled by the control unit 20 so that the measured pressure of the main pressure sensor MP reaches the minimum head pressure of the corresponding layer until reaching the minimum pressure.

For example, when water is used in the third layer (3f) and the measured pressure of the auxiliary pressure sensor (PS3) corresponding to the third layer falls below the set pressure (0.6 bar), the measuring pressure of the auxiliary pressure sensor The inverter booster pump 10 is driven by the control unit 20 so that the measured pressure of the main pressure sensor MP reaches the minimum head pressure of 3 layers (2.8 bar) until the set pressure (0.6 bar) do. When the measurement pressure of the auxiliary pressure sensor PSN corresponding to the eleventh layer falls below the set pressure (0.6 bar) by using water at the eleventh layer Nf, which is the highest layer Nf of the building 30, The operation of the inverter booster pump 10 is controlled by the control unit 20 so that the measured value of the booster pump MP reaches the minimum head pressure of 11 layers (6.0 bar).

At this time, if the measured pressure of the auxiliary pressure sensor PS3 drops below the set pressure (0.6 bar) but the measured pressure of the main pressure sensor MP is higher than the minimum pumping pressure (2.8 bar) of the third layer, Since the pressure of the vertical main pipe BL3 drops below the minimum positive pressure (2.8 bar) since the pressure of the main boiler BL3 is supplied to the branch pipe BL3 through the pressure reducing valve RPV3, (10) is driven.

(3) Then, when the measured pressures of the auxiliary pressure sensors (PS1, PS2, PS3, .... PSn) and the main pressure sensor (MP) of the corresponding layer reach the set pressure and the minimum positive pressure, , The inverter booster pump 10 is put in an operation waiting state.

(4) Further, when signals of a plurality of auxiliary pressure sensors are inputted to the control unit 20 by using water in a plurality of layers of two or more layers, the measurement pressure of the main pressure sensor MP is set to the minimum positive pressure The operation of the inverter booster pump 10 is controlled by the control unit 20 so as to be achieved and maintained.

For example, when the measurement pressure of the first and third layers of the auxiliary pressure sensors PS1 and PS3 is input to the control unit 20 using water at the same time in the first and third layers, Controls the operation of the inverter booster pump 10 so that the measured pressure of the MP reaches the three-layer minimum head pressure (e.g., 2.8 bar).

As described above, the energy saving smart control method of the inverter booster pump system according to the present invention is designed so that the pressure of the water supply pipe (vertical main pipe) is maintained at the pressure of the standard heading curve (for example, 6 bar) Control the operation of the inverter booster pump actively and smartly with the minimum head pressure (set at tuning; for example, 2 bar for the first layer and 2.4 bar for the second layer), rather than operating the inverter booster pump There is an advantage of saving energy.

10: Inverter booster pump L1: Suction piping
L2: Water supply pipe L3: Vertical main pipe
BL1, BL2, BL3, ..... BLn: Branch pipe MP: Main pressure sensor
RPV1, RPV2, RPV3, ..... RPVn: Pressure reducing valve
PS1, PS2, PS3, .... PSn: auxiliary pressure sensor
CV1, CV2, CV3, .... CVn-1: Check valve
20:

Claims (3)

delete A plurality of inverter booster pumps 10 are installed in parallel between the suction pipe L1 and the water supply pipe L2 and a vertical main pipe L3 is installed in the water supply pipe L2 so as to correspond to the number of the buildings 20 And a plurality of branch tubes BL1, BL2, BL3, ..... BLn are branched to the vertical main tube L3 so that the branch tubes BL1, BL2, BL3, ....., BLn are connected to the building And the main pressure sensor MP is mounted on the water supply pipe L2 so that the main pressure sensor MP is connected to the water supply pipe L2 RPV2, RPV3, ..... RPVn) and auxiliary pressure sensors (PS1, PS2, ..., RPVn) are connected to the respective branch tubes (BL1, BL2, ... PSn are respectively mounted and the auxiliary pressure sensors PS1, PS2, PS3, .... PSn are arranged after the pressure reducing valves RPV1, RPV2, RPV3, ..... RPVn RPV2, RPV3, ..... RPVn), and the vertical main pipe (L3) detects the branch pipe water pressure after the auxiliary pressure sensors (PS1, PS2, PS3, ..., PSn) Multiple The check valves CV1, CV2, CV3, .... CVn-1 are mounted and the check valves CV1, CV2, CV3, ..., CVn-1 are connected to the branch tubes BL1, BL2, BL3 ..., and BLn and the control unit 20 receives pressure values from the main pressure sensor MP and the auxiliary pressure sensors PS1, PS2, PS3, ..., PSn, (10), comprising:
(1) At the time of tuning, the control unit 20 measures from the main pressure sensor MP of the water supply pipe L2 and the auxiliary pressure sensors PS1, PS2, PS3, ..., PSn mounted on the respective branch pipes. When the measured pressure inputted from each of the auxiliary pressure sensors PS1, PS2, PS3, ..., PSn reaches the set pressure, the measuring pressure input from the main pressure sensor MP is driven by the pump Storing the minimum head pressure of the main pressure sensor MP, which corresponds to the set pressure of each of the auxiliary pressure sensors PS1, PS2, PS3, ..., PSn,
(2) When water is used in any one layer of the building 30 and the measured pressure inputted from the auxiliary pressure sensor of the corresponding layer to the control unit 20 falls below the set pressure, the measured pressure of the auxiliary pressure sensor reaches the set pressure The control unit 20 controls the drive of the inverter booster pump 10 so that the measured pressure of the main pressure sensor MP reaches the minimum head pressure of the corresponding layer until it reaches the minimum head pressure of the corresponding layer,
When signals of a plurality of auxiliary pressure sensors are input to the control unit 20 by using water in a plurality of layers of two or more layers so that the measured pressure of the main pressure sensor MP reaches the minimum positive pressure of the highest layer , And the operation of the inverter booster pump (10) is controlled by the controller (20).
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