KR20120093612A - Existing pump controller - Google Patents

Abstract

PURPOSE: A device for controlling a water supplying pump is provided to obtain remote operation and a monitoring function and to prevent an excess current and overheating of a pump motor. CONSTITUTION: A device for controlling a water supplying pump a PID(Proportional-Integral-Derivative) logic controller and a DIOM(Device I/O Manager) logic controller. A P-control of the PID logic controller controls output frequencies so that the output frequencies and deviation have a proportional relation. An I-control of the PID logic controller integrates the deviation appeared in the P-control, thereby revising the output frequencies. A D-control of the PID logic controller differentiates time deviation appeared in the I-control, thereby revising the output frequencies. The DIOM control controls all signals of all input and output and performs functions for filtering abnormal signal, reading driving state, and storing a state. The PID logic and the DIOM logic communicate with a R232 and measure a state and an operating state, thereby maintaining an optimal driving state.

Description

Feed water pump controller {EXISTING PUMP CONTROLLER}

The present invention relates to a feed pump control device, and more particularly to a multi-stage feed pump control device applied to high-rise buildings and the like.

The water supply system of apartment houses, such as conventional apartments, is primarily used in low-rise buildings because tap water or ground water is sent up to the tanks of the high-rise tanks on the high-rise roofs, and then the water is lowered down to be used in each household of the apartment house. Also, the water used up to the rooftop of the multi-family house was sent down and then wasted again, which was not only unnecessary energy consumption, but also contaminated water with paint and rust coming from the tank, and the water supply amount was not constant due to the difference in water supply pressure between the upper and lower layers. There was this.

In order to improve the existing water supply method for the high-rise apartments as described above, a method of directly supplying water to multi-family households using a booster pump that pumps on the principle of vacuum exhaust has been introduced, but this method is applied to new apartment houses, which is expensive. The booster pump and its system components must be newly purchased and installed, and the booster pump used here is a pump having a rated capacity produced for the purpose of control by the inverter and cannot use an existing pump. The situation should be divided into two zones.

In other words, when used in a high floor having more than 15 floors without distinguishing between the low floor and the high floor, breakage of the low rise pipe occurs due to the pressure of the high pressure high pressure pump, and when used as a low pressure low pressure pump, low pressure occurs in the high rise part. Therefore, the pressurized water supply method using the commercially available inverter booster pump is not only able to use the existing water supply pump, but also the water supply pipe can not be used with the existing pipe designed by the high water tank method, and it is removed and the pipe meets the specification of the new inverter booster pump. Since it is necessary to establish a new building, it can be applied to an apartment complex that is expensive and newly constructed, but it cannot be applied to an existing apartment.

Therefore, the water supply pressure is calculated by checking the water supply pressure according to the water supply change in the apartment house, rather than sending it to the water tank of the high water tank on the roof of a high-rise apartment house such as an apartment. Therefore, a pressurized water supply system for supplying water directly to each household is required.

An object of the present invention is to solve the problems as described above, to provide a water supply control device that can stably supply energy saving and unpolluted water.

In order to achieve the above object, the water supply pump control apparatus according to the present invention provides a configuration as shown in FIGS. 1 to 16 of the present application.

In addition, the feed water pump controller is provided with a PID (Producer Integral Differential) Logic Controller and a Direct Input Output Monitoring (DIOM) Logic Controller.

As described above, according to the water supply pump control apparatus according to the present invention, the remote operation and monitoring function is achieved, and the effect that the overcurrent and overheating of the pump motor can be prevented is obtained.

In addition, according to the water supply pump control apparatus according to the present invention, the effect of improving the life of the pump can be obtained by performing the idle prevention function and the correction of the sensor value.

1 to 15 are each a block diagram showing the configuration of a water supply pump control apparatus according to the present invention.
16 is a view for explaining a control process of the pump by the feed water pump control apparatus according to the present invention.

These and other objects and novel features of the present invention will become more apparent from the description of the present specification and the accompanying drawings.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated according to drawing.

In addition, in description of this invention, the same code | symbol is attached | subjected to the same part and the repeated description is abbreviate | omitted.

1 to 15 are each a block diagram showing the configuration of the water supply pump control apparatus according to the present invention.

The feed water pump controller is provided with a Proprietary Integral Differential (PID) Logic Controller and a Direct Input Output Monitoring (DIOM) Logic Controller.

That is, the basic concept of PID control applied to the present invention is as follows.

P control controls the output frequency so that the output frequency and the deviation have a proportional relationship.I control corrects the output frequency by integrating the deviation shown in P control, and D control outputs by differentiating the time deviation shown in I control. To correct the frequency.

Proportional integral and derivative action is a combination of the three actions described above.

y (t) = K (Z + 1 / Ti Z (t) dt + Td dZ (t) / dt)

.

The basic concept of DIOM control is as follows.

It manages the signals of all input outputs and filters abnormal signals.

Functions such as reading the operating status and saving the status.

The basic concept of driving in the present invention is as follows.

PID Logic and DIOM Logic communicate with RS232 and maintain the optimal operation status by judging the status and operation status from time to time.

Therefore, the present invention has the configuration as shown in Figures 1 to 16.

Next, the operation according to the present invention will be described.

After the operation button is clicked, P1-> L1 changes and the output starts.The minimum output is 40% among the control setting-inverter setting items, so 40% is displayed immediately, and then the current pressure starts to rise as much as 100%.

 If the current pressure does not reach the set pressure even when the L1 pump is operated up to 100% of the maximum output, the auxiliary starting deviation is -0.3 bar according to the control setting-secondary setting item, that is, the auxiliary starting pressure = the setting pressure-secondary starting deviation. = 5.0-0.3 = As a sub-secondary condition at 4.7bar, P2 starts direct indirect start after auxiliary start delay time and P2 starts.

After the start delay

Auxiliary stopping pressure = set pressure + compensation adjustment deviation = 5.0 + 0.2 = 5.1 bar

As it fails to rise, P3 also starts a direct start.

Next, a control process of the pump will be described with reference to FIG.

16 is a view for explaining the control process of the pump by the feed water pump control apparatus according to the present invention.

Details of each section in FIG. 16 are as follows.

Section 1 (pressure change 5.0bar-> 4.7bar decrease)

-All pumps are stopped

2 sections (pressure change 4.7bar-> 4.6bar decrease) including friction compensation value 0.1bar

-Starts at the minimum output of 40% set by the main (inverter control) pump and goes up to the maximum output of 100%.

3 sections (maintain or decrease pressure change 4.6bar)

-The point where the auxiliary pump prepares to start with the discharge pressure below the set pressure.

-Auxiliary pump start delay time interval before auxiliary pump starts

4 sections (maintain or decrease pressure change 4.6 bar)

-Auxiliary pump (1) is started and the main pump and auxiliary pump 1 are operating simultaneously.

-Auxiliary pump starting delay time section of the auxiliary pump (2)

Section 5 (Pressure Change 4.6bar-> 5.1bar Rise)

-Auxiliary pump starting delay time section of the auxiliary pump (2)

-Main pump + auxiliary pump 1 + auxiliary pump 2 operating section at the same time

6 sections (maintained pressure change 5.1bar)

-Main Pump + Auxiliary Pump 1 + Auxiliary Pump 2 The operating pressure at the same time is maintained or raised

-Section in which the main pump operation ratio decreases

-Sub-pump 2 Sub-pump Applied to the Static Delay Time

7 sections (maintained pressure change 5.1bar)

-Main Pump + Auxiliary Pump 1 is operating at the same time and Auxiliary Pump 2 is stopped.

-Section where the main pump operation ratio is lowered below the stopping ratio

 -Sub-pump 1 Sub-section applied to the auxiliary pump stoppage delay time

8 sections (maintained pressure change 5.1bar)

-Main pump is in operation and auxiliary pump no.1 is also stopped.

 -The section where the operation ratio of the main pump increases slightly when the subsidiary pump 1 is stopped.

9 sections (maintained 5.1 bar of pressure change)

-Main pump running

-Section where the main pump operation ratio is lowered below the stopping ratio

10 sections (pressure change reduced from 5.1bar to 5.0bar)

-Main pump running

-The section where the main pump operation ratio is lowered to the minimum ratio and applied to the stop time

-Friction compensation value (+ 0.1bar) disappears as it falls to the minimum output.

11 section (5.0bar-> 4.7bar pressure change)

-All pumps are stopped

12 sections (pressure change 4.7bar-> 5.1bar increase) including friction compensation value 0.1bar

-Starts at the minimum output of 40% set by the main (inverter control) pump and goes up to the maximum output of 100%.

Section 13 (Maintains pressure change of 5.1 bar) Includes friction compensation value 0.1 bar

-Period to continue operation at a fixed rate set by the main (inverter control) pump

14 sections (maintained pressure change of 5.1 bar) including friction compensation value 0.1 bar

-Section where the main (inverter control) pump determines the pressure change through the output inspection cycle

15 sections (maintained 5.1 bar of pressure change) Including friction compensation value 0.1 bar

 -The period in which the main (inverter control) pump determines that there is no pressure change through the output inspection cycle and reduces the output from the stop ratio to the minimum output state.

Friction compensation value 0.1 bar was removed, including 16 sections (pressure change 5.1 bar-> 5.0 bar decrease)

-Section where main (inverter control) pump stopped

Next, the section descriptions are as follows.

1. Basic Conditions

-[Operation Setting] Set Pressure: 5.0bar, Upper Limit: 6.5bar, Lower Limit: 0.01bar,

Maneuver Deviation: -0.03bar

-[Control Setting]-> [Inverter] Stop Time: 20 seconds, Minimum Power: 40%, Stop Rate: 70%

Output test interval: 60 seconds, test tolerance: -0.01bar

-[Control Setting]-> [Sub Setting] Auxiliary Start Deviation: -0.04bar, Auxiliary Start Delay: 3sec

Auxiliary Stop Deviation: 0.01bar, Auxiliary Stop Delay: 3sec

-[Preferences]-> [Function Settings] Friction Compensation: 0.02bar

2. Description of Main & Auxiliary Pump Operation

2-1. Starting point of main (inverter control) pump

-Applicable items: set pressure, starting deviation, minimum output, friction compensation

-Current pressure starts at 4.7 bar (reason: set pressure-starting deviation = 5.0-0.3 = 4.7bar)

 2-2. Starting point of auxiliary pump

-Applicable items: Auxiliary pump start deviation, Auxiliary pump start delay

-Start pressure at 4.6 bar (Reason: Set pressure-starting deviation = 5.0-0.4 = 4.6bar)

However, even after reaching 4.6 bar, start after the start delay time of the auxiliary pump.

-If the auxiliary pump 1 is started but is kept below 4.6 bar, the auxiliary pump start delay time

-Auxiliary pump No. 2 starts after the auxiliary pump start delay time. Same condition from 3 to 6

 2-3. When the main (inverter control) pump stops

-Applicable items: stop ratio, stop time, minimum output, output inspection cycle, friction compensation

-If the current pressure stops at 5.0 bar, but the inverter output stops after 20 seconds after the stop time is 70% or less, but after 15 seconds has fallen by the minimum output, it stops after maintaining the minimum output for 5 seconds.

-If the inverter output is at the same rate as the set pressure when the current pressure is equal to the set pressure, it is compulsory if it is the same as the start point of the output test cycle even after 60 seconds of the output test cycle time. In case of no pressure fluctuation, stop the output according to the minimum output and stop time.

2-4. Auxiliary pump stop time

-Application Items: Auxiliary Pump Stop Deviation, Auxiliary Pump Stop Delay, Stop Ratio

-The current pressure is reduced after starting the auxiliary pump 1.2 times.

Set pressure + auxiliary pump stop deviation = 5 + 0.1 = 5.1 bar

After the auxiliary pump stop delay time, the subsidiary pump 3 stops and the subsidiary pump 2 stops after the subordinate pump delay time. However, even if the auxiliary pump is 5.0 bar and the main pump ratio is lowered below the stop ratio, the pump stops in the order of 3 and 2 sequentially after the stop time of the auxiliary pump.

As mentioned above, although the invention made by this inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

Claims (1)

Prototional Integral Differential (PID) Logic Controller and
Feed pump control unit including DIOM (Direct Input Output Monitoring) Logic Controller.

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