CN107923402A - Diarcs helical-lobe compressor and its method of operation - Google Patents

Diarcs helical-lobe compressor and its method of operation Download PDF

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Publication number
CN107923402A
CN107923402A CN201680050487.1A CN201680050487A CN107923402A CN 107923402 A CN107923402 A CN 107923402A CN 201680050487 A CN201680050487 A CN 201680050487A CN 107923402 A CN107923402 A CN 107923402A
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CN
China
Prior art keywords
grade
foregoing
rotating speed
motor
main body
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Granted
Application number
CN201680050487.1A
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Chinese (zh)
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CN107923402B (en
Inventor
壶井升
中村元
滨田克德
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Shengang Compressor Co.,Ltd.
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Kobe Steel Ltd
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Publication of CN107923402A publication Critical patent/CN107923402A/en
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Publication of CN107923402B publication Critical patent/CN107923402B/en
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Classifications

    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • 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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • 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
    • F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
    • H02P5/50—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing electrical values representing the speeds

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

Diarcs helical-lobe compressor（2）Possess the 1st grade of compressor main body（4）, the 2nd grade of compressor main body（6）, control device（8）.1st grade of compressor main body（4）By the 1st motor（12）Driving, foregoing 1st motor（12）Can be by the 1st transverter（14）Change rotating speed.2nd grade of compressor main body（6）By the 2nd motor（18）Driving, is connected in series in the 1st grade of compressor main body（4）Downstream, foregoing 2nd motor（18）Can be by the 2nd transverter（20）Change rotating speed.Control device（8）With the 1st grade of rotating speed determining section（25）, the 1st converter Control portion（26）, exploration portion（27）, the 2nd converter Control portion（28）, foregoing 1st grade of rotating speed determining section（25）With requiring pressure accordingly to determine the 1st grade of rotating speed, foregoing 1st converter Control portion（26）Control the 1st transverter（14）So that in by the 1st grade of rotating speed determining section（25）The 1st grade of definite rotating speed, foregoing exploration portion（27）Determine to make the 1st motor in the 2nd grade of rotating speed（12）And the 2nd motor（18）Wastage in bulk or weight electric power minimize most suitable 2nd grade of rotating speed, foregoing 2nd converter Control portion（28）Control the 2nd transverter（20）So that in most suitable 2nd grade of rotating speed.According to the structure, in diarcs helical-lobe compressor（2）, can realize and require pressure, and can minimize wastage in bulk or weight electric power.

Description

Diarcs helical-lobe compressor and its method of operation
Technical field
The present invention relates to diarcs helical-lobe compressor and its method of operation.
Background technology
It is known to be compressed by being divided into two stages in compression work fluid and carry out the two level of high pressure compressed Type compressor.In diarcs compressor, particularly screw is used due to that can change rotating speed in extensive purposes.
In patent document 1, disclose a kind of diarcs helical-lobe compressor, said second type helical-lobe compressor by varying 1st grade of rotating speed and the 2nd grade of rotating speed, pressure, that is, intermediate pressure between the 1st grade and the 2nd grade of compression is adjusted to permission pressure limit It is interior.
Patent document 1:Japanese Unexamined Patent Publication 7-158576 publications.
The diarcs helical-lobe compressor of patent document 1 considers control intermediate pressure, but do not consider to make the 1st grade and The wastage in bulk or weight electric power of 2nd grade of compression minimizes.
The content of the invention
Pressure is required it is an object of the present invention to be realized in diarcs helical-lobe compressor, and makes wastage in bulk or weight electric power minimum Change.
The 1st scheme of the present invention provides a kind of diarcs helical-lobe compressor, and said second type helical-lobe compressor possesses the 1st grade Compressor main body, the 2nd grade of compressor main body, control device, foregoing 1st grade of compressor main body are driven by the 1st motor, and foregoing 1 motor can change rotating speed by the 1st transverter, and foregoing 2nd grade of compressor main body is driven by the 2nd motor, be connected in series In the downstream of foregoing 1st grade of compressor main body, foregoing 2nd motor can change rotating speed, foregoing control by the 2nd transverter Device has the 1st grade of rotating speed determining section, the 1st converter Control portion, the 2nd grade of rotating speed determining section, the 2nd converter Control portion, foregoing 1st grade of rotating speed determining section with requiring pressure accordingly to determine the 1st grade of rotating speed, change by foregoing 1st converter Control portion control the foregoing 1st Flow device so that in the foregoing 1st grade of rotating speed determined by foregoing 1st grade of rotating speed determining section, foregoing 2nd grade of rotating speed determining section determines Make the most suitable 2nd grade of rotating speed that the wastage in bulk or weight electric power of foregoing 1st motor and foregoing 2nd motor minimizes in 2nd grade of rotating speed, Foregoing 2nd converter Control portion controls foregoing 2nd transverter so that in foregoing most suitable 2nd grade of rotating speed.
According to the program, in diarcs helical-lobe compressor, pressure can be required to realize by adjusting the 1st grade of rotating speed, And can by adjusting the 2nd grade of rotating speed come make wastage in bulk or weight electric power minimize.Here, the 1st grade of rotating speed is turning for the 1st motor Speed, the 2nd grade of rotating speed are the rotating speeds of the 2nd motor.In addition, wastage in bulk or weight electric power represents to be compressed by the 1st grade of compressor main body and the 2nd grade The sum for the electric power that both owner's bodies consume.
Can also be that foregoing 2nd grade of rotating speed determining section makes foregoing 2nd grade of rotating speed automatically change in given area, inspection Survey foregoing wastage in bulk or weight electric power corresponding with each foregoing 2nd grade of rotating speed, the foregoing most suitable 2nd grade of rotating speed of exploration.
, can be automatically into the exploration for exercising the most suitable 2nd grade of rotating speed that wastage in bulk or weight electric power minimizes according to the program.In addition, The 2nd grade of rotating speed is practically changed to detect wastage in bulk or weight electric power in given area, institute is so as to effectively exploring makes wastage in bulk or weight The most suitable 2nd grade of rotating speed that electric power minimizes.
Can also be that foregoing 2nd grade of rotating speed determining section is foregoing most suitable using being stored in advance relative to foregoing 1st grade of rotating speed 2nd grade of rotating speed.
According to the program, the most suitable 2nd grade of rotating speed for minimizing wastage in bulk or weight electric power is stored in advance, institute is not so as to transporting Exploringly immediately determined in turning.
In addition, the present invention provides a kind of diarcs helical-lobe compressor, said second type helical-lobe compressor possesses the 1st grade of compression Owner's body, the 2nd grade of compressor main body, control device, foregoing 1st grade of compressor main body are driven by the 1st motor, foregoing 1st electricity Motivation can change rotating speed by the 1st transverter, and foregoing 2nd grade of compressor main body is driven by the 2nd motor, before being connected in series in The downstream of the 1st grade of compressor main body is stated, foregoing 2nd motor can change rotating speed, foregoing control device by the 2nd transverter With the 1st grade of rotating speed determining section, the 1st converter Control portion, the 2nd grade of rotating speed determining section, the 2nd converter Control portion, foregoing 2nd grade For rotating speed determining section with requiring pressure accordingly to determine the 2nd grade of rotating speed, foregoing 2nd converter Control portion controls foregoing 2nd transverter, So that in the foregoing 2nd grade of rotating speed determined by foregoing 2nd grade of rotating speed determining section, foregoing 1st grade of rotating speed determining section determines the 1st grade Make the most suitable 1st grade of rotating speed that wastage in bulk or weight electric power minimizes in rotating speed, foregoing 1st converter Control portion controls foregoing 1st change of current Device so that in foregoing most suitable 1st grade of rotating speed.
According to the program, in diarcs helical-lobe compressor, pressure can be required to realize by adjusting the 2nd grade of rotating speed, And can by adjusting the 1st grade of rotating speed come make wastage in bulk or weight electric power minimize.
Can also be that foregoing 1st grade of rotating speed determining section makes foregoing 1st grade of rotating speed automatically change in given area, inspection Survey foregoing wastage in bulk or weight electric power corresponding with each foregoing 1st grade of rotating speed, the foregoing most suitable 1st grade of rotating speed of exploration.
According to the program, the most suitable 1st grade of rotating speed for minimizing wastage in bulk or weight electric power can be automatically explored.In addition, both Determine practically to change the 1st grade of rotating speed in scope to detect wastage in bulk or weight electric power, institute is so as to effectively exploring makes wastage in bulk or weight electric power most The most suitable 1st grade of rotating speed of smallization.
Can also be that foregoing 1st grade of rotating speed determining section is foregoing most suitable using being stored in advance relative to foregoing 2nd grade of rotating speed 1st grade of rotating speed.
According to the program, the most suitable 1st grade of rotating speed for minimizing wastage in bulk or weight electric power is stored in advance, institute is so as to operating In without exploration in the case of immediately determine.
The 2nd scheme of the present invention provides a kind of method of operation of diarcs helical-lobe compressor, said second type screw compression The method of operation of machine is to set the 1st grade of compressor main body, the 2nd grade of compressor main body, and foregoing 1st grade of compressor main body is by the 1st electricity Motivation drives, and foregoing 1st motor can change rotating speed by the 1st transverter, and foregoing 2nd grade of compressor main body is electronic by the 2nd Machine drives, and is connected in series in the downstream of foregoing 1st grade of compressor main body, and foregoing 2nd motor can change by the 2nd transverter Variable speed, determines the 2nd grade of rotating speed corresponding with requiring pressure, controls foregoing 2nd transverter so that in the 2nd grade of rotating speed, determines Make the most suitable 1st grade of rotating speed that the wastage in bulk or weight electric power of foregoing 1st motor and foregoing 2nd motor minimizes in 1st grade of rotating speed, Control foregoing 1st transverter so that in the most suitable 1st grade of rotating speed.
Further it is provided that a kind of method of operation of diarcs helical-lobe compressor, the operating side of said second type helical-lobe compressor Method is to set the 1st grade of compressor main body, the 2nd grade of compressor main body, and foregoing 1st grade of compressor main body is driven by the 1st motor, Foregoing 1st motor can change rotating speed by the 1st transverter, and foregoing 2nd grade of compressor main body is driven by the 2nd motor, goes here and there Connection is connected to the downstream of foregoing 1st grade of compressor main body, and foregoing 2nd motor can change rotating speed by the 2nd transverter, really Fixed the 2nd grade of rotating speed corresponding with requiring pressure, controls foregoing 2nd transverter so that in the 2nd grade of rotating speed, determine the 1st grade of rotating speed In make the wastage in bulk or weight electric power of foregoing 1st motor and foregoing 2nd motor minimize most suitable 1st grade of rotating speed, control it is foregoing 1st transverter so that in the most suitable 1st grade of rotating speed.
Invention effect
According to the present invention, in diarcs helical-lobe compressor, pressure can be required to realize by adjusting the 1st grade of rotating speed, and Can by adjusting the 2nd grade of rotating speed come make wastage in bulk or weight electric power minimize.
Brief description of the drawings
Fig. 1 is the summary construction diagram of the diarcs helical-lobe compressor of the 1st embodiment of the present invention.
Fig. 2 is the block diagram for the control device for representing Fig. 1.
Fig. 3 is the control stream of the diarcs helical-lobe compressor of Fig. 1.
Fig. 4 is the subprogram in the control stream of Fig. 2.
Fig. 5 is the chart for representing to make the 2nd grade of rotating ratio of the wastage in bulk or weight electric power minimum relative to the 1st grade of rotating ratio.
Fig. 6 is the block diagram of the control device for the diarcs helical-lobe compressor for representing the 2nd embodiment of the present invention.
Fig. 7 be the storage unit for representing Fig. 6 the 1st grade of rotating ratio and the 2nd grade of rotating ratio relation chart.
Fig. 8 is the control stream of the diarcs helical-lobe compressor of Fig. 6.
Fig. 9 is the block diagram of the control device for the diarcs helical-lobe compressor for representing the 3rd embodiment of the present invention.
Figure 10 is the control stream of the diarcs helical-lobe compressor of Fig. 9.
Figure 11 is the subprogram in the control stream of Figure 10.
Embodiment
Hereinafter, referring to the drawings, embodiments of the present invention are illustrated.
(the 1st embodiment)
As shown in Figure 1, the diarcs helical-lobe compressor 2 of present embodiment possesses the 1st grade of compressor main body 4, the 2nd grade of compression owner Body 6, control device 8.
1st grade of compressor main body 4 is screw type, and air is sucked through the 1st air line 10a from air entry 4a.1st horse The 1st grade of compressor main body 4 is mechanically connected to up to (the 1st motor) 12, drives the 1st motor 12, thus by internal figure Unshowned screw compression air.Electrical connection has the 1st transverter 14 at the 1st motor 12, can change turning for the 1st motor 12 Speed.In addition, the consumption electric power of the 1st motor 12 is exported to control device 8.1st grade of compressor main body 4 upon compression will compression sky Gas is discharged from outlet 4b.Discharged compressed air is supplied through the 2nd air line 10b to the 2nd grade of compressor main body 6.
What the air entry 6a of outlet 4b and the 2nd grade of compressor main body 6 of the 1st grade of compressor main body 4 was fluidly connected Intercooler 16 is provided with 2nd air line 10b.Intercooler 16 is used to make due to the pressure of the 1st grade of compressor main body 4 Contracting heat and rise the 2nd air line 10b in compressed air Wen Duxiajiang and be set.The species of intercooler 16 does not have It is particularly limited to, such as heat exchanger can also be used.Preferably, diarcs can be improved by using not consumption electric power The efficiency of helical-lobe compressor 2.
2nd grade of compressor main body 6 is screw type, is connected through the 2nd air line 10b and the 1st grade of 4 fluid of compressor main body Connect, be arranged at the downstream of the 1st grade of compressor main body 4.2nd grade of compressor main body 6 passes through the 2nd air line 10b from air-breathing Mouth 6a suction air.2nd motor (the 2nd motor) 18 is mechanically connected to the 2nd grade of compressor main body 6, drives the 2nd motor 18, Thus by the screw compression air not shown in internal figure.The 2nd transverter 20, energy are electrically connected with the 2nd motor 18 Enough change the rotating speed of the 2nd motor 18.In addition, the consumption electric power of the 2nd motor 18 is exported to control device 8.2nd grade of compression owner Body 6 is discharged from outlet 6b upon compression, by compressed air.Discharged compressed air is through the 3rd air line 10c by confession Supplied to destination.
In the 3rd air line 10c of the outlet 6b extensions from the 2nd grade of compressor main body 6, be provided with aftercooler 22 and Pressure sensor 24.Aftercooler 22 is used for the 3rd air line risen due to the heat of compression for making the 2nd grade of compressor main body 6 The Wen Duxiajiang of compressed air in 10c and be set.The species of aftercooler 22 is not particularly limited, such as can also use Heat exchanger.Preferably, the energy efficiency of diarcs helical-lobe compressor 2 can be improved by using not consumption electric power.This Outside, the pressure (hereinafter referred to as discharge pressure) of discharge air can be measured by pressure sensor 24.Pressure sensor 24 will be surveyed Definite value is exported to control device 8.
Control device 8 is by the hardware such as sequencer and the software sharing for being installed on it.Control device 8 is based on not shown in figure Supply the requirement pressure of destination, the consumption electric power of the 1st motor 12, the consumption electric power of the 2nd motor 18 and from pressure sensor 24 The measured value of reception, controls the 1st transverter 14 and the 2nd transverter 20.
As shown in Fig. 2, control device 8 possesses the 1st grade of rotating speed determining section 25, the 1st converter Control portion 26, exploration portion the (the 2nd Level rotating speed determining section) the 27, the 2nd converter Control portion 28.
Supply purpose not shown in the figure in the 1st grade of 25 and the 3rd air line 10c of rotating speed determining section (with reference to Fig. 1) downstream The requirement pressure on ground accordingly determines the 1st grade of rotating speed.1st grade of rotating speed is the rotating speed of the 1st motor 12.Specifically, in this embodiment party In formula, by by the discharge pressure that pressure sensor 24 measures with supply destination requirement pressure it is roughly equal in a manner of determine 1st grade of rotating speed.
1st converter Control portion 26 controls the 1st transverter 14 so that in the 1st grade determined by the 1st grade of rotating speed determining section 25 Rotating speed.
Explore the 2nd grade based on measured value, that is, wastage in bulk or weight electric power from the 1st motor 12 and the 2nd motor 18 and turn in exploration portion 27 Make the most suitable 2nd grade of rotating speed that wastage in bulk or weight electric power minimizes in speed.2nd grade of rotating speed is the rotating speed of the 2nd motor 18.In addition, always disappear Power consumption power represents the sum of the electric power consumed by the 1st grade of compressor main body 4 and the 2nd grade of both compressor main body 6.Specifically, at this In embodiment, the 2nd grade of rotating speed is automatically changed in given area, detect wastage in bulk or weight corresponding with each 2nd grade of rotating speed Electric power, explores the most suitable 2nd grade of rotating speed during wastage in bulk or weight electric power of minimum.Here, the given area for exploring the 2nd grade of rotating speed is and the The scope of the rotating speed of corresponding 2nd motor 18 of scope of the permanent operating of 2 grades of compressor main bodies 6.Preferably, be from the 2nd grade Lower limit rotating speed of the discharge temperature of compressor main body 6 when the permanent operating of the 2nd accordingly definite motor 18 to the 2nd motor The scope of upper limit rotating speed of 18 maximum permissible speed or motor temperature when the permanent operating accordingly determined.
2nd converter Control portion 28 controls the 2nd transverter 20 so that turns in most suitable 2nd grade explored by exploration portion 27 Speed.
With reference to Fig. 3 and Fig. 4, the control method of present embodiment is illustrated.
As shown in figure 3, first, if the operation start (step S3-1) of diarcs helical-lobe compressor 2, to the 1st grade of rotating speed N1 and the 2nd grade of rotating speed N2 carries out initially setting (step S3-2).The initial value of 1st grade of rotating speed N1 and the 2nd grade of rotating speed N2 is for example Respective rated speed can be used.Also, discharge air pressure is measured by pressure sensor 24, it is true by the 1st grade of rotating speed Whether determine portion 25 judges the measured value of discharge air pressure in given area (step S3-3).Here given area refers to energy The scope of the discharge air pressure of the compressed air of the enough requirement pressure for supplying the destination that furnishes good supplies to.In discharge air pressure ratio In the case of given area height, the 1st grade of rotating speed N1 is declined set rotating speed Δ N (step S3-4), judge discharge air pressure again Whether power is in given area (step S3-3).In the case where discharge air pressure is lower than given area, make the 1st grade of rotating speed N1 Rise set rotating speed Δ N (step S3-5), judge discharge air pressure whether in given area (step S3-3) again.Arranging In the case of going out air pressure in given area, the 1st grade of rotating speed N1 is determined, the 1st converter Control portion 26 controls the 1st transverter 14 so that in the 1st grade of rotating speed N1 (step S3-6) determined by the 1st grade of rotating speed determining section 25.
Then, the 2nd grade of rotating speed N2 (step S3-7) is explored by exploration portion 27.With reference to Fig. 4 in the related exploration of rear explanation Subprogram.Then, the 2nd converter Control portion 28 controls the 2nd transverter 20 so that makes always to disappear in what is explored by exploration portion 27 The most suitable 2nd grade of rotating speed N2opt (step S3-8) that power consumption power W is minimized.After completing these processing, discharge air pressure is judged again Whether power is in given area (step S3-3).
As shown in figure 4, carry out the exploration of the 2nd grade of rotating speed N2 based on exploration portion 27.If the exploration of the 2nd grade of rotating speed N2 starts 2nd grade of rotating speed N2, then is set to the lower limit (step S4-2) of given area by (step S4-1), measures wastage in bulk or weight electric power W, storage Deposit the group (step S4-3) of the 2nd grade of rotating speed N2 and wastage in bulk or weight electric power W at this time.The given area of 2nd grade of rotating speed N2 is as described above Ground is corresponding with the scope of the permanent operating of the 2nd grade of compressor main body 6.Then, the 2nd grade of rotating speed N2 is made to increase set rotating speed Δ N (steps Rapid S4-4), the processing of repeat step S4-3 and step S4-4 are until the 2nd grade of rotating speed N2 exceedes the upper limit value (step of given area S4-5).The increment Delta N of the 2nd grade of rotating speed N2 of step S4-4 can also be with the set rotating speed of the step S3-3 and step S3-4 of Fig. 3 Δ N numerical value is different.Then, it is determined that the most suitable 2nd grade of rotating speed N2opt (step S4-6) when wastage in bulk or weight electric power W is minimum, terminates to visit Rope (step S4-7).
Fig. 5 is by the 2nd grade of rotating speed N2 stored in this wise by exploration portion 27 and corresponding wastage in bulk or weight electric power W composition figures Table.In exploration portion 27, it is minimum most suitable 2nd grade of rotating speed N2opt to explore smallest point, that is, wastage in bulk or weight electric power W on chart.
In addition, the heuristic approach of the 2nd grade of rotating speed N2 shown in Fig. 4 is only to illustrate, can also be explored with other methods makes always The most suitable 2nd grade of rotating speed N2opt that consumption electric power W is minimized.For example, it can be unlike present embodiment although will survey The group of fixed the 2nd grade of rotating speed N2 and wastage in bulk or weight electric power W all stores, and also measures new wastage in bulk or weight electric power W every time, and so far The minimum value of wastage in bulk or weight electric power W compare, only store the less 2nd grade of rotating speed N2 of wastage in bulk or weight electric power W.In this case, final quilt 2nd grade of rotating speed N2 of storage is the most suitable 2nd grade of rotating speed N2opt for minimizing wastage in bulk or weight electric power W.
, can be by adjusting in diarcs helical-lobe compressor 2 by being controlled shown in the control stream such as Fig. 3 and Fig. 4 1st grade of rotating speed requires pressure to realize, and can by adjusting the 2nd grade of rotating speed come make wastage in bulk or weight electric power minimize.In addition, energy The exploration of enough most suitable 2nd grade of rotating speeds minimized automatically into enforcement wastage in bulk or weight electric power.And then practically change in given area 2nd grade of rotating speed detects wastage in bulk or weight electric power, turn so as to effectively exploring minimize wastage in bulk or weight electric power most suitable 2nd grade Speed.In addition, the pressure of air and product, that is, weight flow of volume are constant in compression process, so being configured to even in based on The 2nd grade of rotating speed of change, which can also be realized, after the realization of the requirement pressure of 1 grade of rotating speed requires pressure.
In the present embodiment, in the exploration in exploration portion 27, the control for minimizing wastage in bulk or weight electric power has been carried out, but control Object processed is not limited to consumption electric power.For example, it is also possible to instead of wastage in bulk or weight electric power, into exercising the 1st grade of compressor main body 4 and the 2nd grade The power of compressor main body 6, current minimized control.The the 2nd and the 3rd embodiment after this is also identical.
(the 2nd embodiment)
The structure of the diarcs helical-lobe compressor 2 of present embodiment is identical with the structure of the 1st embodiment shown in Fig. 1.In addition, Fig. 6 represents the frame of the control device 8 of the diarcs helical-lobe compressor 2 of the 2nd embodiment corresponding with Fig. 2 of the 1st embodiment Figure.Present embodiment is to substitute except the exploration portion 27 in relation to the 1st embodiment is stored portion's (the 2nd grade of rotating speed determining section) 29 It is substantially identical with the 1st embodiment in addition.Therefore, the explanation in relation to the part identical with the 1st embodiment is omitted sometimes.
As shown in fig. 6, the control device 8 of the diarcs helical-lobe compressor 2 of present embodiment possesses storage unit 29, foregoing storage It is minimum most suitable 2nd grade of rotating speed to deposit portion 29 and store in advance relative to the 1st grade of rotating speed wastage in bulk or weight electric power.Control device 8 by means of It is most suitable using being stored relative to the 1st grade of rotating speed by storage unit 29 when helping the 2nd converter Control portion 28 the 2nd grade of rotating speed of change 2nd grade of rotating speed.
Shown in Fig. 7 is the 2nd grade of rotating ratio for making wastage in bulk or weight electric power minimum relative to the chart of the 1st grade of rotating ratio.Figure 100% the 1st motor 12 of expression of the longitudinal axis and transverse axis in table and the rotating speed of the 2nd motor 18 reach the maximum for allowing rotating speed.Chart Described in there are multiple lines to be because, the condition such as temperature during according to the size of the screw rotor of compressor main body 4,6, compression, most The 2nd grade of rotating speed is fitted relative to the 1st grade of rotating ratio to change.Storage unit 29 stores leads in advance relative to various conditions as shown in Figure 7 Cross the most suitable 2nd grade of rotating speed that experiment etc. is obtained.In addition, the chart shown in Fig. 7 is only to illustrate, it is not limited to based on the figure shown in Fig. 7 The definite method of the most suitable 2nd grade of rotating speed of table.
Shown in Fig. 8 is the control stream of the diarcs helical-lobe compressor 2 of present embodiment.In the present embodiment, step It is substantially identical with the 1st embodiment of Fig. 3 beyond the processing of S8-7.In the processing of step S8-7, using by storage unit 29 2nd grade of rotating speed N2 of storage.Therefore, if with requiring pressure accordingly to determine necessary 1st grade of rotating speed N1, store makes in advance Wastage in bulk or weight electric power W minimize most suitable 2nd grade of rotating speed N2opt, so as to not exploring the feelings of the 2nd grade of rotating speed N2 in operation Immediately determined under condition.
(the 3rd embodiment)
The structure of the diarcs helical-lobe compressor 2 of present embodiment is identical with the structure of the 1st embodiment shown in Fig. 1.In addition, Fig. 9 indicates the control device 8 of the diarcs helical-lobe compressor 2 of the 3rd embodiment corresponding with Fig. 2 of the 1st embodiment Block diagram.Figure 10 and Figure 11 represents the diarcs helical-lobe compressor of the 3rd embodiment corresponding with Fig. 3 and Fig. 4 of the 1st embodiment The control stream of 2 control device 8.The diarcs helical-lobe compressor 2 of present embodiment is except replacing the 1st with the 1st embodiment It is substantially identical with the 1st embodiment beyond level rotating speed and the 2nd grade of related control of rotating speed.Therefore, it is related to and the 1st embodiment The situation that identical part omits the description.
As shown in figure 9, the control device 8 of the diarcs helical-lobe compressor 2 of present embodiment determines the 2nd grade of rotating speed so that It is in discharge pressure corresponding with requiring pressure in the 2nd grade of rotating speed determining section 27.2nd converter Control portion 28 controls the 2nd transverter 20 so that in the 2nd grade of rotating speed determined by the 2nd grade of rotating speed determining section 27.In addition, exploration portion (the 1st grade of rotating speed determining section) 25 bases In measured value, that is, wastage in bulk or weight electric power from the 1st motor 12 and the 2nd motor 18, exploring in the 1st grade of rotating speed makes wastage in bulk or weight electric power The most suitable 1st grade of rotating speed minimized.Specific heuristic approach is identical with the exploration of the most suitable 2nd grade of rotating speed of the 1st embodiment.
As shown in Figures 10 and 11, the stream that controls of present embodiment is, from the control of the 1st embodiment shown in Fig. 3 and Fig. 4 System stream, exchanges the record in relation to the 1st grade of rotating speed N1 and the 2nd grade of rotating speed N2.In addition, in the subprogram processing of Figure 10 similarly Ground, handles from the subprogram of the 1st embodiment shown in Fig. 4, exchanges the record in relation to the 1st grade of rotating speed N1 and the 2nd grade of rotating speed N2. Therefore, in the present embodiment, it is different from the 1st embodiment, determine the 1st grade of rotating speed after the determining of the 2nd grade of rotating speed.
In this way, the rotating speed of some of the 1st grade of rotating speed and the 2nd grade of rotating speed is first determined when not limiting exploration.
The specific embodiment of the present invention is illustrated above, but the invention is not restricted to the above embodiment, energy It is enough that various changes are carried out in the range of the invention to implement., can also will be above-mentioned for example, the embodiment as the invention Described content is appropriately combined in 1st to the 3rd embodiment.
Description of reference numerals
2 diarcs helical-lobe compressors
4 the 1st grades of compressor main bodies
4a air entries
4b outlets
6 the 2nd grades of compressor main bodies
6a air entries
6b outlets
8 control devices
The 1st air lines of 10a
The 2nd air lines of 10b
The 3rd air lines of 10c
12 the 1st motors (the 1st motor)
14 the 1st transverters
16 intercoolers
18 the 2nd motors (the 2nd motor)
20 the 2nd transverters
22 aftercoolers
24 pressure sensors
25 the 1st grades of rotating speed determining sections (exploration portion)
26 the 1st converter Control portions
27 exploration portions (the 2nd grade of rotating speed determining section)
28 the 2nd converter Control portions
29 storage units (the 2nd grade of rotating speed determining section).

Claims (8)

  1. A kind of 1. diarcs helical-lobe compressor, it is characterised in that
    Possess the 1st grade of compressor main body, the 2nd grade of compressor main body, control device,
    Foregoing 1st grade of compressor main body is driven by the 1st motor, and foregoing 1st motor can change by the 1st transverter and turn Speed,
    Foregoing 2nd grade of compressor main body is driven by the 2nd motor, is connected in series in the downstream of foregoing 1st grade of compressor main body, Foregoing 2nd motor can change rotating speed by the 2nd transverter,
    Foregoing control device has the 1st grade of rotating speed determining section, the 1st converter Control portion, the 2nd grade of rotating speed determining section, the 2nd transverter Control unit, foregoing 1st grade of rotating speed determining section is with requiring pressure accordingly to determine the 1st grade of rotating speed, foregoing 1st converter Control portion control Make foregoing 1st transverter so that in the foregoing 1st grade of rotating speed determined by foregoing 1st grade of rotating speed determining section, foregoing 2nd grade turns Fast determining section determines to make the wastage in bulk or weight electric power of foregoing 1st motor and foregoing 2nd motor minimize most in the 2nd grade of rotating speed The 2nd grade of rotating speed is fitted, foregoing 2nd converter Control portion controls foregoing 2nd transverter so that in foregoing most suitable 2nd grade of rotating speed.
  2. 2. diarcs helical-lobe compressor as claimed in claim 1, it is characterised in that
    Foregoing 2nd grade of rotating speed determining section makes foregoing 2nd grade of rotating speed automatically change in given area, detection and each foregoing the The corresponding foregoing wastage in bulk or weight electric power of 2 grades of rotating speeds, explores foregoing most suitable 2nd grade of rotating speed.
  3. 3. diarcs helical-lobe compressor as claimed in claim 1, it is characterised in that
    Foregoing 2nd grade of rotating speed determining section uses the foregoing most suitable 2nd grade of rotating speed stored in advance relative to foregoing 1st grade of rotating speed.
  4. A kind of 4. diarcs helical-lobe compressor, it is characterised in that
    Possess the 1st grade of compressor main body, the 2nd grade of compressor main body, control device,
    Foregoing 1st grade of compressor main body is driven by the 1st motor, and foregoing 1st motor can change by the 1st transverter and turn Speed,
    Foregoing 2nd grade of compressor main body is driven by the 2nd motor, is connected in series in the downstream of foregoing 1st grade of compressor main body, Foregoing 2nd motor can change rotating speed by the 2nd transverter,
    Foregoing control device has the 1st grade of rotating speed determining section, the 1st converter Control portion, the 2nd grade of rotating speed determining section, the 2nd transverter Control unit, foregoing 2nd grade of rotating speed determining section is with requiring pressure accordingly to determine the 2nd grade of rotating speed, foregoing 2nd converter Control portion control Make foregoing 2nd transverter so that in the foregoing 2nd grade of rotating speed determined by foregoing 2nd grade of rotating speed determining section, foregoing 1st grade turns Fast determining section determines the most suitable 1st grade of rotating speed for minimizing wastage in bulk or weight electric power in the 1st grade of rotating speed, foregoing 1st converter Control Portion controls foregoing 1st transverter so that in foregoing most suitable 1st grade of rotating speed.
  5. 5. diarcs helical-lobe compressor as claimed in claim 4, it is characterised in that
    Foregoing 1st grade of rotating speed determining section makes foregoing 1st grade of rotating speed automatically change in given area, detection and each foregoing the The corresponding foregoing wastage in bulk or weight electric power of 1 grade of rotating speed, explores foregoing most suitable 1st grade of rotating speed.
  6. 6. diarcs helical-lobe compressor as claimed in claim 4, it is characterised in that
    Foregoing 1st grade of rotating speed determining section uses the foregoing most suitable 1st grade of rotating speed stored in advance relative to foregoing 2nd grade of rotating speed.
  7. A kind of 7. method of operation of diarcs helical-lobe compressor, it is characterised in that
    1st grade of compressor main body, the 2nd grade of compressor main body are set,
    Foregoing 1st grade of compressor main body is driven by the 1st motor, and foregoing 1st motor can change by the 1st transverter and turn Speed,
    Foregoing 2nd grade of compressor main body is driven by the 2nd motor, is connected in series in the downstream of foregoing 1st grade of compressor main body, Foregoing 2nd motor can change rotating speed by the 2nd transverter,
    Determine the 1st grade of rotating speed corresponding with requiring pressure,
    Control foregoing 1st transverter so that in the 1st grade of rotating speed,
    Determine make that the wastage in bulk or weight electric power of foregoing 1st motor and foregoing 2nd motor minimizes most suitable the in the 2nd grade of rotating speed 2 grades of rotating speeds,
    Control foregoing 2nd transverter so that in the most suitable 2nd grade of rotating speed.
  8. A kind of 8. method of operation of diarcs helical-lobe compressor, it is characterised in that
    1st grade of compressor main body, the 2nd grade of compressor main body are set,
    Foregoing 1st grade of compressor main body is driven by the 1st motor, and foregoing 1st motor can change by the 1st transverter and turn Speed,
    Foregoing 2nd grade of compressor main body is driven by the 2nd motor, is connected in series in the downstream of foregoing 1st grade of compressor main body, Foregoing 2nd motor can change rotating speed by the 2nd transverter,
    Determine the 2nd grade of rotating speed corresponding with requiring pressure,
    Control foregoing 2nd transverter so that in the 2nd grade of rotating speed,
    Determine make that the wastage in bulk or weight electric power of foregoing 1st motor and foregoing 2nd motor minimizes most suitable the in the 1st grade of rotating speed 1 grade of rotating speed,
    Control foregoing 1st transverter so that in the most suitable 1st grade of rotating speed.
CN201680050487.1A 2015-08-28 2016-07-26 Two-stage screw compressor and method of operating the same Active CN107923402B (en)

Applications Claiming Priority (3)

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JP2015-169409 2015-08-28
JP2015169409A JP6491982B2 (en) 2015-08-28 2015-08-28 Two-stage screw compressor and operating method thereof
PCT/JP2016/071906 WO2017038308A1 (en) 2015-08-28 2016-07-26 Two-stage screw compressor and method for operating same

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CN107923402A true CN107923402A (en) 2018-04-17
CN107923402B CN107923402B (en) 2020-03-27

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CN111720298A (en) * 2020-06-11 2020-09-29 厦门东亚机械工业股份有限公司 Two-stage compression control method and controller of air compressor and air compressor

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JPH1137053A (en) * 1997-07-23 1999-02-09 Ishikawajima Harima Heavy Ind Co Ltd Control method for inverter drive multistage compressor
GB2367332A (en) * 2000-09-25 2002-04-03 Compair Uk Ltd Multi-stage screw compressor driven by independent electric motors with electronic speed control
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CN103362791A (en) * 2012-03-30 2013-10-23 阿耐思特岩田株式会社 Compressed gas supply unit, compressed gas supply apparatus and control method of said unit and said apparatus

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Publication number Priority date Publication date Assignee Title
EP0576238B1 (en) * 1992-06-22 1997-09-03 Compressor Controls Corporation Load sharing method and apparatus for controlling a main gas parameter of a compressor station with multiple dynamic compressors
JPH1137053A (en) * 1997-07-23 1999-02-09 Ishikawajima Harima Heavy Ind Co Ltd Control method for inverter drive multistage compressor
CN1402814A (en) * 1999-10-26 2003-03-12 艾拉斯科普库空气动力股份有限公司 Multistage compressor unit and method for regulating such multistage compressor unit
GB2367332A (en) * 2000-09-25 2002-04-03 Compair Uk Ltd Multi-stage screw compressor driven by independent electric motors with electronic speed control
CN103362791A (en) * 2012-03-30 2013-10-23 阿耐思特岩田株式会社 Compressed gas supply unit, compressed gas supply apparatus and control method of said unit and said apparatus

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Publication number Priority date Publication date Assignee Title
CN111720298A (en) * 2020-06-11 2020-09-29 厦门东亚机械工业股份有限公司 Two-stage compression control method and controller of air compressor and air compressor

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WO2017038308A1 (en) 2017-03-09
TWI631282B (en) 2018-08-01
CN107923402B (en) 2020-03-27
JP6491982B2 (en) 2019-03-27
TW201719020A (en) 2017-06-01
JP2017044195A (en) 2017-03-02

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Effective date of registration: 20220214

Address after: Tokyo, Japan

Patentee after: Shengang Compressor Co.,Ltd.

Address before: Kobe City, Hyogo Prefecture, Japan

Patentee before: Kobe Steel, Ltd.