KR20160141039A - Method and system of controlling multi air compressor - Google Patents

Method and system of controlling multi air compressor Download PDF

Info

Publication number
KR20160141039A
KR20160141039A KR1020150073763A KR20150073763A KR20160141039A KR 20160141039 A KR20160141039 A KR 20160141039A KR 1020150073763 A KR1020150073763 A KR 1020150073763A KR 20150073763 A KR20150073763 A KR 20150073763A KR 20160141039 A KR20160141039 A KR 20160141039A
Authority
KR
South Korea
Prior art keywords
value
pressure
individual
air compressor
virtual
Prior art date
Application number
KR1020150073763A
Other languages
Korean (ko)
Other versions
KR101744578B1 (en
Inventor
최유식
신성수
Original Assignee
(주)에스코프로
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)에스코프로 filed Critical (주)에스코프로
Priority to KR1020150073763A priority Critical patent/KR101744578B1/en
Publication of KR20160141039A publication Critical patent/KR20160141039A/en
Application granted granted Critical
Publication of KR101744578B1 publication Critical patent/KR101744578B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids

Abstract

A multi-air compressor control method and system capable of effectively controlling the operating conditions of a multi-air compressor. A method of controlling operation of a multiple air compressor system in which a plurality of air compressors are connected in parallel comprises the steps of: measuring a target pressure of compressed air at a specific location by an air compressor; Comparing the measured target pressure measurement value with a preset target pressure setting value; Calculating an imaginary virtual pressure value that is different from or different from an individual discharge pressure value of the air compressor according to a result of comparison between the target pressure measurement value and the target pressure setting value; And controlling the individual operating conditions of the air compressor on the basis of the virtual pressure value, wherein the air compressor includes independent controls for independently controlling operating conditions, The individual operating conditions are controlled.

Description

[0001] METHOD AND SYSTEM FOR CONTROLLING MULTI AIR COMPRESSOR [0002]

The present invention relates to a multi-air compressor control method and system, and more particularly, to a multi-air compressor control method and system capable of effectively controlling the operating conditions of a plurality of air compressors.

When a plurality of air compressors are connected in parallel in an industrial field in various fields, in order to supply a constant pressure without waste of energy, it is necessary to maintain uniform pressure through load control of a plurality of air compressors.

As one of the methods for maintaining the target pressure by the plurality of air compressors at a uniform set value, it is necessary to provide a separate control panel for each air compressor, , The intake valve of each air compressor is opened and closed to regulate the total amount of compressed air to adjust the target pressure.

A control system of a conventional multi-air compressor using a plurality of air compressors connected to each other uses an integrated controller for uniformly controlling each air compressor to maintain a target pressure, and controls the discharge pressure of each air compressor through an integrated controller can do.

However, in many cases, when a plurality of air compressors are connected and used, different types or manufacturers' air compressors are used in many cases. Since the control panels are different according to the types and manufacturers of the respective air compressors, It is inevitably required to replace the control panel installed in each air compressor with the same model.

That is, even if each of the air compressors connected to each other is uniformly controlled through the integrated control unit, if the control panel of each air compressor is different depending on the type and manufacturer, it is difficult to uniformly control the air compressors by the integrated control unit. There is a problem that the control panel of each air compressor needs to be replaced with a control panel of the same model. Furthermore, since the control panel of each air compressor is very expensive, there is a problem that the cost of replacing the control panel increases as the number of connections of different air compressors increases.

On the other hand, conventionally, the control panel is not replaced, the discharge valve is installed in the discharge pipe of each air compressor, and the integrated control unit opens and closes the discharge valve, so that the target pressure by a plurality of air compressors can be maintained at a uniform set value A technique has been disclosed.

However, in the conventional method of opening and closing the discharge valve of each air compressor and maintaining the set value of the target pressure, there is a problem in that there is a risk factor according to the valve control.

That is, in the case of the conventional control system using the discharge valve, a surge occurs during excessive control of the discharge valve, causing vibration, and the air compressor may be stopped. In addition, there is a problem that a change in the discharge pressure due to the operation of the discharge valve is very sensitive, resulting in an uncontrollable state.

Further, in order to continuously control using the discharge valve, a constant differential pressure is always applied to the discharge valve, so there is a problem that energy loss is caused by the valve differential pressure and operating efficiency is lowered.

In recent years, a variety of studies have been made on an air compressor control method capable of performing stable and efficient integrated control, simplifying the structure and reducing the cost, but the development of the air compressor control method is insufficient have.

The present invention provides a multi-air compressor control method and system capable of effectively controlling the operating conditions of a plurality of air compressors.

In particular, according to the present invention, it is possible to perform integrated control of a multi-air compressor without replacing a control panel or installing a separate valve by using a virtual pressure signal value, To provide a multi-air compressor control method and system.

In addition, the present invention provides a multi-air compressor control method and system capable of maximizing energy savings as well as having a wide control range and a high response speed.

The present invention also provides a multi-air compressor control method and system that can simplify the structure and reduce cost.

The present invention also provides a multi-air compressor control method and system that can improve compatibility of different types and manufacturers of air compressors.

According to a preferred embodiment of the present invention, there is provided a method of controlling operation of a multi-air compressor system in which a plurality of air compressors are connected in parallel, comprising the steps of: Measuring a target pressure; Comparing the measured target pressure measurement value with a preset target pressure setting value; Calculating an imaginary virtual pressure value that is different from or different from an individual discharge pressure value of the air compressor according to a result of comparison between the target pressure measurement value and the target pressure setting value; And controlling the individual operating conditions of the air compressor on the basis of the virtual pressure value, wherein the air compressor includes independent controls for independently controlling operating conditions, The individual operating conditions are controlled.

The present invention controls the operation of the air compressor by simply manipulating the pressure signal transmitted to the individual control unit with a virtual pressure signal without having to replace the control panel or attach the valve in order to perform integrated control of the multi air compressor .

For reference, it is possible to judge whether or not the integrated value of the current value and the pressure value of the air compressor has been set in the preset state. If the integrated control of the air compressor is determined, It is possible to measure the target pressure in the main piping to which the piping is joined.

The virtual input value can be calculated by calculating the pressure increase / decrease value by comparing the target pressure measurement value and the target pressure setting value, and by adding / subtracting the pressure increase / decrease value to the pressure signal value (individual discharge pressure value).

The virtual pressure value can be calculated in various ways depending on the result of comparison between the target pressure measurement value and the target pressure setting value. For example, when the target pressure measurement value is higher than the target pressure setting value as a result of comparing the target pressure measurement value and the target pressure setting value, the virtual pressure value input to the individual control unit may be calculated to be higher than the individual discharge pressure value . As another example, when the target pressure measurement value is lower than the target pressure setting value as a result of comparing the target pressure measurement value and the target pressure setting value, the virtual pressure value input to the individual control section may be calculated to be lower than the individual discharge pressure value have. On the other hand, when the target pressure measurement value is equal to the target pressure setting value as a result of comparing the target pressure measurement value and the target pressure setting value, the virtual pressure value can be calculated to be equal to the individual discharge pressure value.

On the other hand, if the target pressure measurement value is lower than the target pressure setting value, a step of comparing the current measurement value measuring the current supplied to the air compressor with a preset current setting value may be added, Can be calculated according to the result of comparison between the value and the current set value. For example, when the current measurement value is higher than the current setting value, the virtual pressure value input to the individual control section can be calculated to be higher than the individual discharge pressure value. In another example, when the current measurement value is lower than the current setting value, the virtual pressure value input to the individual control section can be calculated to be lower than the individual discharge pressure value.

The individual control unit can control the individual operating conditions of the air compressor based on the virtual pressure value. For example, when the target pressure measurement value is higher than the target pressure setting value, the virtual pressure value can be calculated to be higher than the individual discharge pressure value, and when a virtual pressure value higher than the individual discharge pressure value is transmitted to the individual control unit, It is determined that the current state is a high load state and the discharge pressure of the air compressor can be lowered. In contrast, when the target pressure measurement value is lower than the target pressure setting value, the virtual pressure value can be calculated to be lower than the individual discharge pressure value, and when a virtual pressure value lower than the individual discharge pressure value is transmitted to the individual control unit, The controller may determine that the current state of the load is low and increase the discharge pressure of the air compressor.

The manner in which the individual control unit controls the individual operating conditions of the air compressor based on the virtual pressure value can be appropriately changed according to the required conditions and design specifications. For example, controlling the individual operating conditions of the air compressor based on the virtual pressure value may include: inputting a virtual pressure value to the individual controller; Comparing the hypothetical pressure value with an individual pressure preset value preset in the individual control unit; And controlling an inlet guide vane (IGV) that adjusts an individual suction capacity of the air compressor according to a result of comparison between the virtual pressure value and the individual pressure set value. For example, when the virtual pressure value is higher than the individual pressure set value, the individual control may control the inlet guide vane to reduce the individual discharge pressure of the air compressor. In another example, when the virtual pressure value is lower than the individual pressure set value, the individual control may control the inlet guide vane to increase the individual discharge pressure of the air compressor.

According to another preferred embodiment of the present invention, a multiple air compressor system in which a plurality of air compressors are connected, each of which is provided with a separate control unit for independently controlling the operating conditions, calculates a target pressure of the compressed air at a specific position by the air compressor A target pressure sensor to measure; An integrated controller for integrally controlling the individual control units and calculating the pressure increase / decrease value according to a result of comparing the target pressure measurement value measured by the target pressure sensor with a predetermined target pressure setting value; And a pressure signal control unit for transmitting a virtual pressure value to the individual control unit according to the pressure increase / decrease value calculated by the integrated control unit, wherein the integrated control unit controls the air compressor .

According to the multi-air compressor control method and system of the present invention, it is possible to effectively control the integrated operating conditions of the multi-air compressor without waste of energy.

Particularly, according to the present invention, it is possible to control the individual operating conditions of the air compressor by using virtual virtual pressure values which are added or subtracted from the actual individual discharge pressure values of the air compressor, So that the integrated control of the multi-air compressor can be performed more effectively regardless of the maker.

As described above, conventionally, in order to perform integrated control of the multi-air compressor, the control panel must be replaced or the valve must be installed for each air compressor. Particularly, in the case of using the valve, there is a problem in that many risk factors are accompanied by the valve control.

However, according to the present invention, since the operation of the air compressor can be controlled by simply manipulating the pressure signal transmitted to the individual control unit with the virtual pressure signal without having to replace the control panel or attach the valve, Installation time can be reduced.

Furthermore, according to the present invention, since the operation of the air compressor can be controlled by the electrical control for virtually operating the pressure signal, the response speed is high and the control range can be further expanded.

Further, according to the present invention, not only a uniform target pressure control is possible, but also energy saving efficiency can be maximized.

In addition, according to the present invention, it is possible to improve the compatibility of different types and manufacturers of air compressors, and to reduce maintenance and repair costs.

1 and 2 are views for explaining a multi-air compressor control system according to the present invention.
FIG. 3 is a diagram for explaining the relationship between the integrated controller and the pressure signal controller in the multi-air compressor control system according to the present invention.
4 is a view for explaining a method of controlling a multi-air compressor according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments. For reference, the same numbers in this description refer to substantially the same elements and can be described with reference to the contents described in the other drawings under the above-mentioned rules, and the contents which are judged to be obvious to the person skilled in the art or repeated can be omitted.

1 and 2 are views for explaining a multi-air compressor control system according to the present invention. FIG. 3 is a diagram for explaining a relationship between an integrated controller and a pressure signal controller, which is a multi air compressor control system according to the present invention .

As shown in these drawings, the multi-air compressor control system according to the present invention includes an individual control unit 100, a target pressure sensor 200, an integrated control unit 300, and an input signal control unit 400.

The plurality of air compressors 10 are connected in parallel and can be integrally controlled by the integrated controller 300, which will be described later. For reference, a typical air compressor 10 may be used as the air compressor 10 used in the present invention, and the type and characteristics of the air compressor 10 may be variously changed according to required conditions. For example, as the air compressor 10, a conventional three-stage discharge air compressor 10 capable of three-stage discharge can be used.

An individual pressure sensor 12 is mounted on the individual discharge pipe of the air compressor 10 and the individual pressure sensor 12 can measure the individual discharge pressure of the compressed air discharged along the individual discharge pipe. As the individual pressure sensor 12, a conventional pressure sensor capable of measuring pressure can be used, and the present invention is not limited or limited by the type and characteristics of the individual pressure sensor 12.

The individual control unit 100 is separately provided to the air compressor 10 so that the operating conditions of the respective air compressor units can be independently controlled.

The individual control unit 100 controls the individual suction capacity of the air compressor 10 according to the result of comparison with the preset individual pressure set value as the individual discharge pressure value (virtual pressure value) and the current value are inputted, The individual discharge pressure of the air compressor 10 can be controlled by controlling the guide vane (IGV).

As the inlet guide vane, a usual inlet guide vane usable in a normal air compressor 10 can be used. The type and characteristics of the inlet guide vane can be appropriately changed according to required conditions and design specifications.

In addition, a passive control panel may be used as the individual control unit 100, and the present invention is not limited or limited by the type and characteristics of the control panel.

Particularly, as the control panel constituting the individual control part 100 of the present invention, control panels of different kinds and manufacturers can be used, and the integrated control part 300, which will be described later, The panel can be controlled integrally.

The target pressure sensor 200 is installed to measure a target pressure of compressed air at a specific position by the air compressor 10. [ For example, the target pressure sensor 200 is mounted on a main pipe through which compressed air discharged individually from each air compressor 10 is merged, and is connected to a target pressure (hereinafter referred to as " target pressure " Integrated control pressure) can be measured. For reference, in the embodiment of the present invention, the target pressure sensor is mounted on the main pipe corresponding to the final confluence point, but in some cases, the target pressure sensor may be mounted at the intermediate confluence point.

As the target pressure sensor 200, a conventional pressure sensor capable of measuring pressure can be used, and the present invention is not limited or limited by the type and characteristics of the target pressure sensor 200.

The integrated control unit 300 is provided for integrally controlling each of the individual control units 100. The integrated control unit 300 may control the pressure of the target pressure measured by the target pressure sensor 200, The addition / subtraction value can be calculated. The integrated controller 300 may include conventional control components such as a power unit, a setting unit, and a signal receiving unit.

For example, when the target pressure measured by the target pressure sensor 200 is "800" (e.g., kPa), the integrated controller 300 calculates the pressure increase / decrease value , And the target pressure set value is "1000 ", the integrated controller 300 can calculate the pressure increase / decrease value of" (+) 200 ", which is the difference between the target pressure measurement value and the target pressure set value.

In addition, the target pressure set value may be set in advance according to the number and configuration of the air compressors 10 connected in parallel.

The pressure signal controller 400 is provided to transmit a virtual pressure value to the individual controller 100 according to a pressure increase / decrease value calculated by the integrated controller 300. The individual controller 100 controls the pressure signal controller The operation conditions of the air compressor 10 can be individually controlled based on the virtual input values transmitted from the air compressor 400. [

For example, in the present invention, the pressure signal control unit 400 transmits / receives the virtual pressure value to / from the individual control unit 100 according to the pressure increase / decrease value. For example, The pressure signal control unit 400 outputs a virtual pressure value of "700" lower than the individual discharge pressure value by "200 " to the individual control unit 100 ). Therefore, although the air compressor 10 operated by the individual control unit 100 has the individual discharge pressure value of substantially "900 ", the individual discharge pressure value can be operated as in the state of" 700 ".

As the pressure signal controller 400, a normal current pulse can be used, and the present invention is not limited or limited by the type and structure of the pressure signal controller 400.

More specifically, the pressure signal controller 400 includes a first input terminal 402 to which an individual discharge pressure value is input from an individual pressure sensor 12 of the air compressor 10, 300), a second input terminal (406) to which the pressure increase / decrease value calculated by the integrated controller (300) is inputted, and a second input terminal And a second output terminal 408 for outputting a value to the individual control unit.

In this way, the pressure signal control unit 400 transmits the virtual input values to the individual control unit 100 instead of the individual discharge pressure values measured by the individual pressure sensors 12, It is possible to control the inlet guide vane based on the virtual input value instead of the discharge pressure value.

The virtual input values by the pressure signal controller 400 may be provided in various ways according to the required conditions and design specifications. For example, when the target pressure measurement value is higher than the target pressure setting value, the pressure signal controller 400 sets the virtual pressure value calculated to be higher than the individual discharge pressure value so that the individual discharge pressure of the air compressor 10 can be lowered. To the individual control unit 100. In other words, when the target pressure measurement value is lower than the target pressure setting value, the pressure signal controller 400 controls the pressure of the air compressor 10 so that the virtual pressure Value to the individual control unit 100. [ On the other hand, when the target pressure measurement value and the target pressure set value are equal to each other, the pressure signal control unit 400 can transmit the calculated virtual pressure value equal to the individual discharge pressure value to the individual control unit 100. In some cases, the individual discharge pressure values measured by the individual pressure sensors may be directly transmitted to the individual control units without additional pressure increase or decrease depending on the operating conditions.

In the above-described embodiment of the present invention, the pressure signal control unit is configured to convert the pressure signal into a state of being added or subtracted and output. However, in some cases, Or the like.

If the target pressure measurement value is lower than the target pressure setting value, a step of comparing the current measurement value, which measures the current supplied to the air compressor 10, with a predetermined current setting value may be added, The value can be calculated according to the result of comparison between the current measurement value and the current setting value.

Hereinafter, a method of controlling a multi-air compressor according to the present invention will be described with reference to FIG.

4 is a view for explaining a method of controlling a multi-air compressor according to the present invention. In addition, the same or equivalent portions as those in the above-described configuration are denoted by the same or equivalent reference numerals, and a detailed description thereof will be omitted.

Referring to FIG. 4, a method for controlling a multi-air compressor according to the present invention includes: measuring a target pressure of compressed air at a specific position by an air compressor 10; Comparing the measured target pressure measurement value with a target pressure setting value; Calculating an imaginary virtual pressure value that is different from or different from an individual discharge pressure value of the air compressor (10) according to a comparison result between a target pressure measurement value and a target pressure setting value; And controlling the individual operating conditions of the air compressor (10) based on the virtual pressure value, wherein the air compressor (10) includes an independent control unit (100) 100 controls the individual operating conditions of the air compressor 10 based on the virtual pressure value.

First, a current value applied to the air compressor 10 may be measured to determine whether or not the air compressor 10 is integratedly controlled, in a state in which a preset value for the current value and the pressure value of the air compressor 10 is set in advance. The set value for the pressure value of the air compressor 10 may include a target pressure set value, an individual pressure set value of the air compressor 10, and an upper set pressure value.

Next, when the integrated control participation of the air compressor 10 is determined, the target pressure of the compressed air at a specific position by the air compressor 10 is measured. For example, the target pressure at the main piping where the compressed air individually discharged from each air compressor 10 is merged can be measured.

Then, the measured target pressure measurement value is compared with the target pressure set value previously set in the integrated controller 300.

Next, a hypothetical virtual pressure value which is added or subtracted from the individual discharge pressure value of the air compressor 10 is calculated according to the result of comparison between the target pressure measurement value and the target pressure setting value.

As described above, the virtual input value is calculated by comparing the target pressure measurement value with the target pressure measurement value in the integrated controller 300 to calculate the pressure increase / decrease value, and the pressure signal value input to the pressure signal control unit 400 By adding or subtracting the pressure increase / decrease value to the discharge pressure value.

The virtual pressure value may be calculated in various manners according to the result of comparison between the target pressure measurement value and the target pressure setting value.

For example, when the target pressure measurement value is higher than the target pressure setting value as a result of comparing the target pressure measurement value with the target pressure setting value, The virtual pressure value input to the controller 100 can be calculated to be higher than the individual discharge pressure value. As a result of comparison between the target pressure measurement value and the target pressure setting value, if the target pressure measurement value is lower than the target pressure setting value, the individual discharge pressure of the air compressor 10 may be increased The virtual pressure value input to the control unit 100 can be calculated to be lower than the individual discharge pressure value. On the other hand, when the target pressure measurement value is equal to the target pressure setting value as a result of comparing the target pressure measurement value and the target pressure setting value, the virtual pressure value may be calculated to be equal to the individual discharge pressure value.

Meanwhile, as described above, when the target pressure measurement value is lower than the target pressure setting value, a step of comparing the current measurement value measured with the current supplied to the air compressor 10 with the predetermined current setting value is added And the virtual pressure value can be calculated according to the result of comparison between the current measurement value and the current setting value.

The virtual pressure value according to the current value comparison result can be calculated in various ways according to the required conditions. For example, when the current measurement value is higher than the current setting value, the virtual pressure value input to the individual control unit 100 is set to be higher than the individual discharge pressure value so that the individual discharge pressure of the air compressor 10 can be lowered Can be calculated. If the current measurement value is lower than the current setting value, the virtual pressure value input to the individual control unit 100 may be set to be greater than the individual discharge pressure value so that the individual discharge pressure of the air compressor 10 can be increased. Can be calculated low.

Next, the individual operating conditions of the air compressor 10 can be controlled based on the virtual pressure value calculated as described above.

A virtual virtual pressure value reflecting the pressure increase / decrease value calculated by the integrated controller 300 may be transmitted to the individual controller 100 of each air compressor 10 by the pressure controller, The individual operating conditions of the air compressor 10 can be controlled based on the pressure value.

For example, when the target pressure measurement value is higher than the target pressure setting value, the virtual pressure value may be calculated to be higher than the individual discharge pressure value, and a virtual pressure value higher than the individual discharge pressure value may be transmitted to the individual control unit 100 The individual control unit 100 may determine that the current state of the load is high and lower the discharge pressure of the air compressor 10.

On the contrary, when the target pressure measurement value is lower than the target pressure setting value, the virtual pressure value can be calculated to be lower than the individual discharge pressure value, and the virtual pressure value lower than the individual discharge pressure value is transmitted to the individual control unit 100 The individual control unit 100 can increase the discharge pressure of the air compressor 10 by determining that the current state is a low load state.

The manner in which the individual control unit 100 controls the individual operating conditions of the air compressor 10 based on the virtual pressure value can be appropriately changed according to the required conditions and design specifications.

Hereinafter, the step of controlling the individual operation conditions of the air compressor 10 based on the virtual pressure value may include: inputting a virtual pressure value to the individual control unit 100; Comparing the virtual pressure value with a preset individual pressure setting value in the individual controller 100; And controlling the inlet guide vane (IGV) for adjusting the individual suction capacity of the air compressor (10) according to the comparison result of the virtual pressure value and the individual pressure set value. .

For example, when the virtual pressure value is higher than the individual pressure set value, the individual control unit 100 may control the inlet guide vane to reduce the individual discharge pressure of the air compressor 10. [ In another example, when the virtual pressure value is lower than the individual pressure set value, the individual control unit 100 may control the inlet guide vane to increase the individual discharge pressure of the air compressor 10.

Meanwhile, when the target pressure set value and the target pressure measurement value become equal to each other, the integrated controller 300 continuously monitors the target pressure so that the actual value of the discharge pressure of the individual air compressor 10 becomes equal to the set value Can be controlled.

Also, when unloading or stopping the facility, the integrated control unit 300 can sense the current signal through the current signal to cancel the signal control, and automatically control the signal control to participate in the normal operation again.

Also, when the actual pressure of the equipment rises to the upper limit pressure set value level, the integrated controller 300 can detect this and release the signal control.

Although the present invention has been described with reference to the preferred embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that

10: air compressor 12: individual pressure sensor
100: Individual control unit 200: Target pressure sensor
300: Integrated controller 400: Pressure signal controller

Claims (18)

CLAIMS 1. A method of controlling operation of a multiple air compressor system having a plurality of air compressors connected thereto,
Measuring a target pressure of compressed air at a specific position by the air compressor;
Comparing the measured target pressure measurement value with a predetermined target pressure setting value;
Calculating an imaginary virtual pressure value that is different from or different from an individual discharge pressure value of the air compressor according to a comparison result between the target pressure measurement value and the target pressure setting value; And
And controlling the individual operating conditions of the air compressor based on the virtual pressure value,
Wherein the air compressor includes an independent control unit that independently controls operation conditions, and the individual control unit controls individual operation conditions of the air compressor based on the virtual pressure value. The method according to claim 1,
Wherein the step of controlling the individual operating conditions of the air compressor based on the virtual pressure value comprises:
Inputting the virtual pressure value to the individual control unit;
Comparing the virtual pressure value and a predetermined individual pressure setting value; And
Controlling an inlet guide vane (IGV) for adjusting an individual suction capacity of the air compressor according to a result of comparison between the virtual pressure value and the individual pressure setting value;
Wherein the control unit is operable to control the air compressor. 3. The method of claim 2,
Wherein when the virtual pressure value is higher than the individual pressure set value, the individual discharge pressure of the air compressor is reduced by the inlet guide vane. 3. The method of claim 2,
Wherein the inlet pressure of the air compressor is increased by the inlet guide vane if the virtual pressure value is lower than the individual pressure set value. The method according to claim 1,
Calculating a virtual virtual pressure value which is added or subtracted from the individual discharge pressure value of the air compressor according to the comparison result of the target pressure measurement value and the target pressure setting value,
Wherein when the target pressure measurement value is higher than the target pressure setting value, the virtual pressure value input to the individual control unit is calculated to be higher than the individual discharge pressure value. The method according to claim 1,
Calculating a virtual virtual pressure value which is added or subtracted from the individual discharge pressure value of the air compressor according to the comparison result of the target pressure measurement value and the target pressure setting value,
Wherein when the target pressure measurement value is lower than the target pressure setting value, the virtual pressure value input to the individual control unit is calculated to be lower than the individual discharge pressure value. The method according to claim 1,
And comparing the measured current value with the predetermined current setting value when the target pressure measurement value is lower than the target pressure setting value,
Wherein the virtual pressure value is calculated according to a result of comparison between the current measurement value and the current setting value. 8. The method of claim 7,
Wherein when the current measurement value is higher than the current setting value, the virtual pressure value input to the individual control unit is calculated to be higher than the individual discharge pressure value. 8. The method of claim 7,
Wherein when the current measurement value is lower than the current setting value, the virtual pressure value input to the individual control unit is calculated to be lower than the individual discharge pressure value. The method according to claim 1,
Calculating a virtual virtual pressure value which is added or subtracted from the individual discharge pressure value of the air compressor according to the comparison result of the target pressure measurement value and the target pressure setting value,
Wherein when the target pressure measurement value is equal to the target pressure setting value, the virtual pressure value input to the individual control unit is calculated to be equal to the individual discharge pressure value. The method according to claim 1,
Determining whether or not to participate in the integrated control of the air compressor in a state in which a set value for a current value and a pressure value of the air compressor are set in advance,
Wherein the target pressure measurement value is measured when participation of the air compressor in the integrated control is determined. There is provided a multi-air compressor system in which a plurality of air compressors are connected, each of which is equipped with a separate control unit for independently controlling operating conditions,
A target pressure sensor for measuring a target pressure of the compressed air at a specific position by the air compressor;
An integrated control unit for integrally controlling the individual control unit and calculating a pressure increase / decrease value according to a result of comparing the target pressure measurement value measured by the target pressure sensor with a preset target pressure setting value; And
And a pressure signal controller for transmitting a virtual pressure value to the individual control unit according to the pressure increase / decrease value calculated by the integrated controller,
Wherein the integrated control unit controls the individual control unit to operate the air compressor based on the virtual input value transmitted from the pressure signal control unit. 13. The method of claim 12,
The pressure-
A first input terminal to which an individual discharge pressure value is input from an individual pressure sensor of the air compressor;
A first output terminal for outputting the individual discharge pressure value to the integrated controller;
A second input terminal to which the pressure increase / decrease value calculated by the integrated control unit is inputted; And
A second output terminal for outputting the virtual pressure value obtained by adding or subtracting the pressure increase / decrease value to the individual discharge pressure value to the individual control section;
And a second air compressor. 13. The method of claim 12,
Wherein the individual control unit controls an inlet guide vane (IGV) that adjusts an individual suction capacity of the air compressor according to a result of comparison between the virtual pressure value and an individual pressure set value predetermined by the individual control unit,
And the individual discharge pressure of the air compressor is adjusted by suction capacity control of the inlet guide vane. 13. The method of claim 12,
Wherein when the target pressure measurement value is higher than the target pressure setting value, the virtual pressure value input to the individual control unit is calculated to be higher than the individual discharge pressure value. 13. The method of claim 12,
Wherein when the target pressure measurement value is lower than the target pressure setting value, the virtual pressure value input to the individual control unit is calculated to be lower than the individual discharge pressure value. 17. The method of claim 16,
When the target pressure measurement value is lower than the target pressure setting value,
Wherein the integrated controller calculates the pressure increase / decrease value according to a comparison result between a current measurement value of a current supplied to the air compressor and a preset current setting value, and the pressure signal controller controls the pressure / The virtual pressure value is transmitted,
The virtual pressure value input to the individual control unit is calculated to be higher than the individual discharge pressure value when the current measurement value is higher than the current setting value,
Wherein the virtual pressure value input to the individual control unit is calculated to be lower than the individual discharge pressure value when the current measurement value is lower than the current setting value. 13. The method of claim 12,
Wherein when the target pressure measurement value is equal to the target pressure setting value, the virtual pressure value input to the individual control unit is calculated to be equal to the individual discharge pressure value.
KR1020150073763A 2015-05-27 2015-05-27 Method and system of controlling multi air compressor KR101744578B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150073763A KR101744578B1 (en) 2015-05-27 2015-05-27 Method and system of controlling multi air compressor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150073763A KR101744578B1 (en) 2015-05-27 2015-05-27 Method and system of controlling multi air compressor

Publications (2)

Publication Number Publication Date
KR20160141039A true KR20160141039A (en) 2016-12-08
KR101744578B1 KR101744578B1 (en) 2017-06-12

Family

ID=57576993

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150073763A KR101744578B1 (en) 2015-05-27 2015-05-27 Method and system of controlling multi air compressor

Country Status (1)

Country Link
KR (1) KR101744578B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111126976A (en) * 2019-12-23 2020-05-08 海南新软软件有限公司 Digital asset transaction abnormity monitoring method, device and system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4015397B2 (en) 2001-09-25 2007-11-28 治生 折橋 Compressor parallel operation control apparatus and method
KR101127571B1 (en) 2011-12-23 2012-03-23 에어파워코리아(주) Control system of multiple compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111126976A (en) * 2019-12-23 2020-05-08 海南新软软件有限公司 Digital asset transaction abnormity monitoring method, device and system
CN111126976B (en) * 2019-12-23 2023-11-03 成都同创佳联科技有限公司 Digital asset transaction anomaly monitoring method, device and system

Also Published As

Publication number Publication date
KR101744578B1 (en) 2017-06-12

Similar Documents

Publication Publication Date Title
KR102333207B1 (en) Diagnosis method of air conditioner
US11187439B2 (en) Heat source system
CN100425835C (en) Method for controlling a compressed air installation comprising several compressors, control box applied thereby and compressed air installation applying this method
US9651321B2 (en) Methods of controlling fan capacity and coil capacity in HVAC systems
CN103809437B (en) A kind of constant air capacity control of motor
US10036395B2 (en) Compressor control device and control method therefor, and compressor system
CN103256483B (en) A kind of production line pressurized air energy-saving control method
US20130259711A1 (en) Pumping system for evacuating gas from a plurality of chambers and method for controlling the pumping system
CN109458355B (en) Compressor surge control method and compressor surge control system
CN103982951A (en) Multi-split air conditioning outdoor unit and control method thereof
CN110006138A (en) Prevent the control method and control system of the compressor liquid hammer of air conditioner
US10550837B2 (en) Pneumatic system operation control device and control method
KR102560986B1 (en) Diagnosis method of air conditioner
CN107893763A (en) A kind of compressor condition control method and device
KR101744578B1 (en) Method and system of controlling multi air compressor
JP5530825B2 (en) Screw compressor and its control device
US9670847B2 (en) Two-shaft gas turbine
US11499766B2 (en) Electric expansion valve, a heat exchange system and a method of controlling the electric expansion valve
CN210664949U (en) Air tightness and back pressure tester
JP5211564B2 (en) Compressor device and control method of compressor device
CN108072204B (en) Multi-connected engine oil balance control method and device
JP4742862B2 (en) Capacity control apparatus and method for inverter-driven positive displacement compressor
CN105240130B (en) Control and protect the method for gas turbine and the gas turbine using such method
CN102330687B (en) Method for controlling compressor load during normal operation of screw type compression multi-split air conditioner
KR101127571B1 (en) Control system of multiple compressor

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
AMND Amendment
E601 Decision to refuse application
AMND Amendment
X701 Decision to grant (after re-examination)
GRNT Written decision to grant