CN108678859B - Oil-saving speed regulating system and method for diesel screw air compressor - Google Patents

Oil-saving speed regulating system and method for diesel screw air compressor Download PDF

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Publication number
CN108678859B
CN108678859B CN201810252878.2A CN201810252878A CN108678859B CN 108678859 B CN108678859 B CN 108678859B CN 201810252878 A CN201810252878 A CN 201810252878A CN 108678859 B CN108678859 B CN 108678859B
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diesel engine
power
gear
speed
ecu
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CN108678859A (en
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杨涛
陈兰兰
夏东徽
贾帅帅
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
    • F02D11/06—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance
    • F02D11/10—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type
    • F02D2011/101—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance of the electric type characterised by the means for actuating the throttles

Abstract

The invention discloses an oil-saving speed regulating system of diesel screw air compressors and an oil-saving speed regulating method thereof, wherein the oil-saving speed regulating system comprises an air compressor with an air tank, the air compressor is in transmission connection with a diesel engine, the diesel engine comprises a speed regulating device, the speed regulating device is connected with the air tank, the speed regulating device comprises an ECU (electronic control unit), the ECU is electrically connected with a power regulating switch with a plurality of gears, the power regulating switch can enable the rated power of the diesel engine to be matched with the actual working condition, the working state of a drilling machine is judged, the actual air consumption is obtained, the gears of the power regulating switch are regulated according to the actual air consumption, the ECU selects the rated power value matched with a regulating signal after obtaining the regulating signal, the ECU limits the rated power of the diesel engine, the power range of the diesel engine is between zero and the regulated rated power, the variation range of the rotating speed of the diesel engine is between the idling and the corresponding rotating speed of.

Description

Oil-saving speed regulating system and method for diesel screw air compressor
Technical Field
The invention relates to the technical field of automobile control, in particular to an oil-saving speed regulating system of diesel-driven screw air compressors, and further relates to a oil-saving speed regulating method of the diesel-driven screw air compressors comprising the oil-saving speed regulating system.
Background
The construction drilling is the operation of processing holes on solid materials by using a drill bit, and comprises the operations of construction drilling of an engineering foundation, drilling of construction of foundation piles or pipe piles applied for reinforcing and treating a construction engineering foundation, engineering geological drilling, exploration or detection of engineering foundation conditions such as a construction plant foundation, a dam site, a reservoir, a bridge, a road and the like, development drilling, exploitation of underground brine, dissolved rock salt, sulfur, combustion gasification of underground coal and the like, auxiliary drilling of engineering such as mining or a tunnel and the like, and drilling of construction such as ventilation, drainage, water exploration, gas exploration, freezing, transportation, building and communication installation pipelines, blasting, sampling, grouting and the like during the construction of the mining or the tunnel, wherein the construction drilling is different from the drilling in mechanical processing, the environment for construction drilling is complex, the requirement on drilling equipment is high, the drilling machine is high due to the limitation of the working environment and the working condition, the power requirement of the drilling machine is provided by an air compressor, and the air compressor is favored by continuous compression of external atmosphere through transmission connection with a diesel engine so as to provide necessary power for the air compressor.
The conventional screw air compressor is switched under different working conditions usually, and in order to achieve the purpose of saving oil, the rotating speed of a diesel engine is adjusted by using a speed regulating switch.
However, when the air consumption of the screw air compressor is increased from zero, the rotating speed of the diesel engine reaches the nearly highest idling rotating speed and then returns to the corresponding rotating speed, and a user frequently stops air and uses air in use, so that the diesel engine frequently fluctuates between the idling rotating speed and the nearly highest idling rotating speed. At the moment, the oil consumption of the diesel engine is influenced, and the reliability of the diesel engine is influenced.
Disclosure of Invention
The invention aims to solve at least problems existing in the prior art, and the aim is realized by the following technical scheme.
The invention provides an oil-saving speed regulating system of diesel-driven screw air compressors, which comprises an air compressor with an air tank, wherein the air compressor is in transmission connection with a diesel engine, the diesel engine comprises a speed regulating device, the speed regulating device is connected with the air tank, the speed regulating device comprises an ECU (electronic control unit), the ECU is electrically connected with a power regulating switch with a plurality of gears, and the power regulating switch can enable the rated power of the diesel engine to be matched with the actual working condition.
Preferably, power adjustment switch includes the structure portion, the structure portion includes the base, the base internal rotation sets up the knob that has the indicator, the knob has th gear, second gear and third gear, the interval is provided with operating mode sign, second operating mode sign and third operating mode sign on the base, th gear with the position of operating mode sign corresponds the setting, the second gear with the second operating mode sign corresponds the setting, the third gear with the setting is corresponded to the third operating mode sign.
Preferably, the power adjustment switch further comprises an electrical appliance part, the electrical appliance part comprises a movable contact, an th fixed contact, a second fixed contact and a third fixed contact, the movable contact is fixed with the knob, the th fixed contact, the second fixed contact and the third fixed contact are respectively arranged in the base, the movable contact is electrically connected with a negative electrode of the ECU, and the th fixed contact, the second fixed contact and the third fixed contact are respectively connected with a positive electrode of the ECU through a converter circuit;
when the knob is rotated, the movable contact can be switched among the fixed contact, the second fixed contact and the third fixed contact, so that the rated power threshold of the diesel engine preset in the ECU is changed.
Preferably, the variable current circuit includes an th resistor, a second resistor and a third resistor connected in series in sequence, the th resistor is electrically connected to the th stationary contact, the second resistor is electrically connected to the second stationary contact, the third resistor is electrically connected to the third stationary contact, and the positive electrode of the ECU is electrically connected to the third resistor.
Preferably, the th fixed contact is disposed at the th gear position, the second fixed contact is disposed at the second gear position, the third fixed contact is disposed at the third gear position, the th gear position is a low gear position, the second gear position is a medium gear position, and the third gear position is a high gear position.
Preferably, the speed regulation device further comprises electronic oil , a driving device is in transmission connection with the front end of the electronic oil , the rear end of the electronic oil is electrically connected with the ECU, the driving device comprises a servo cylinder connected with the gas tank through a pipeline, and a proportional valve is arranged on the pipeline.
The invention also provides oil-saving speed-regulating methods implemented by the oil-saving speed-regulating system of the firewood-moving screw air compressor, which comprises the following steps:
s1: detecting actual working condition parameters;
s2: calculating actual gas consumption according to the actual working condition parameters;
s3: adjusting a power adjusting switch to enable the rated power of the diesel engine to be matched with the actual gas consumption;
s4: adjusting the threshold value of the rated power of a diesel engine in the ECU to match the optimal rated power;
s5: and outputting the rotating speed between the idling speed and the optimal rated power.
Preferably, in the step S1, the actual operating condition parameter includes an actual drill hole diameter d1And the actual drilling depth h1；
In step S2, the calculation formula of the actual gas consumption is:
Figure BDA0001608247530000031
wherein Q is the rated gas consumption, f is a coefficient value of 2, D is the rated drilling diameter, and h is the rated drilling depth.
Preferably, the actual gas consumption is matched with a certain working condition gear arranged on the power adjusting switch, and the power adjusting switch is adjusted to the corresponding working condition gear according to the actual gas consumption.
Preferably, the threshold value of the rated power of the diesel engine comprises a low speed value, a medium speed value and a high speed value, and at the low speed value,
Figure BDA0001608247530000032
at the time of the medium speed value,
Figure BDA0001608247530000033
at the high speed, Q is Q.
The invention provides an oil-saving speed regulating system of a diesel screw air compressor, which comprises an air compressor with an air tank, wherein the air compressor is in transmission connection with a diesel engine, the diesel engine comprises a speed regulating device, the speed regulating device is connected with the air tank, the speed regulating device comprises an ECU (electronic control unit), the ECU is electrically connected with a power regulating switch with a plurality of gears, and the power regulating switch can enable the rated power of the diesel engine to be matched with the actual working condition. According to the system, the air compressor obtains power through the diesel engine, the air compressor provides compressed air for the air tank, the air tank is communicated with the drilling machine through a pipeline, meanwhile, the air tank is connected with a speed regulation device, the speed regulation device is controlled pneumatically, the speed regulation device comprises an ECU (Electronic Control Unit), a power regulation switch is arranged on the ECU, the power regulation switch adjusts the rated power of the diesel engine through regulating gears, namely the rated power of the diesel engine is limited, the engine has a characteristic curve diagram, the diesel engine has corresponding optimal rotating speeds under different rated power conditions, when the optimal rotating speeds are corresponding, the oil consumption of the diesel engine is minimum, therefore, the purpose of saving oil of the diesel engine is achieved by regulating the rated power of the diesel engine.
The specific working process is that the actual gas consumption required by the drilling machine during working is obtained by judging the current working state of the drilling machine, the gear of the power adjusting switch is adjusted according to the actual gas consumption, the ECU obtains an adjusting signal of the power adjusting switch, a rated power value matched with the adjusting signal is selected according to the adjusting signal, the ECU limits the rated power of the diesel engine, the power range of the diesel engine is between zero and the adjusted rated power at the moment, and the rotating speed variation range of the diesel engine is between the idle speed and the rotating speed corresponding to the adjusted rated power.
The rated power of the diesel engine is adjusted according to different working conditions, the change of the rotating speed of the diesel engine is kept in a small range, the oil consumption of the diesel engine is effectively reduced, the exhaust emission meets the environmental protection requirement, meanwhile, the change range of the rotating speed of the diesel engine is small, the service life of the diesel engine can be guaranteed, and the reliability of the diesel engine is effectively improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a block diagram of the oil-saving speed control system provided by the invention;
FIG. 2 is a schematic diagram of the power regulation switch shown in FIG. 1;
FIG. 3 is a top view of the power adjustment switch of FIG. 2;
FIG. 4 is a bottom view of the power adjustment switch of FIG. 2;
FIG. 5 is a circuit schematic of the power conditioning switch of FIG. 2;
FIG. 6 is a flow chart of the fuel-saving speed-regulating method provided by the invention.
Reference numerals
1 is an air compressor, 2 is a diesel engine, 3 is an ECU, 4 is electronic oil , 5 is a servo cylinder, 6 is a proportional valve, 7 is an air tank, 8 is a power adjusting switch, 81 is a knob, 811 is an indicator, 82 is a base, 821 is a CAN bus interface, 822 is a working condition indicator, 823 is a second working condition indicator, 824 is a third working condition indicator, and 9 is an exhaust valve;
100 is th resistor, 101 is th stationary contact, 200 is the second resistor, 202 is the second stationary contact, 300 is the third resistor, 301 is the third stationary contact, 400 is the moving contact.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1 to 5, fig. 1 is a block diagram of a fuel-saving speed control system according to the present invention; FIG. 2 is a schematic diagram of the power regulation switch shown in FIG. 1; FIG. 3 is a top view of the power adjustment switch of FIG. 2; FIG. 4 is a bottom view of the power adjustment switch of FIG. 2; fig. 5 is a circuit schematic of the power conditioning switch of fig. 2.
In specific embodiments, the fuel-saving speed Control system of the diesel screw air compressor provided by the invention comprises an air compressor 1 with an air tank 7, the air compressor 1 is in transmission connection with a diesel engine 2, the diesel engine 2 comprises a speed Control device, the speed Control device is connected with the air tank 7, the speed Control device comprises an ECU3(Electronic Control Unit), the ECU3 is electrically connected with a power adjustment switch 8 with a plurality of gears, the power adjustment switch 8 can enable the rated power of the diesel engine 2 to be matched with the actual working condition, in the system, the air compressor 1 obtains power through the diesel engine 2, the air compressor 1 provides compressed air for the air tank 7, the air tank 7 is communicated with a drilling machine through a pipeline, the speed Control device is connected to the air tank 7, the speed adjustment device is in pneumatic Control, the power adjustment switch 8 adjusts the rated power of the diesel engine 2 through gear adjustment, namely, the rated power of the diesel engine 2 is limited, and the characteristic curve of the engine is known that the diesel engine 2 has the corresponding optimal rotating speed under different rated power conditions, and the optimal diesel engine oil consumption is adjusted, so that the purpose of saving the diesel engine 2 is achieved through the rated power curve.
The specific working process is that the actual gas consumption required by the drilling machine during working is obtained by judging the current working state of the drilling machine, the gear of the power adjusting switch 8 is adjusted according to the actual gas consumption, the ECU3 obtains an adjusting signal of the power adjusting switch 8, a rated power value matched with the adjusting signal is selected according to the adjusting signal, the ECU3 limits the rated power of the diesel engine 2, the power range of the diesel engine 2 is between zero and the adjusted rated power, and the rotating speed variation range of the diesel engine 2 is between the idle speed and the corresponding rotating speed of the adjusted rated power.
The rated power of the diesel engine 2 is adjusted according to different working conditions, the rotating speed change of the diesel engine 2 is kept in a smaller range, the oil consumption of the diesel engine 2 is effectively reduced, the tail gas emission meets the environmental protection requirement, meanwhile, the change range of the rotating speed of the diesel engine 2 is small, the service life of the diesel engine 2 can be guaranteed, and the reliability of the diesel engine 2 is effectively improved.
It should be understood that the gears set up in the above-mentioned power adjustment switch 8 are a plurality of, and each gear corresponds different operating modes, through judging the required tolerance of operating mode after, when actual tolerance is between two gears, select high gear wherein to guarantee the stability of air feed under this operating mode, and then guarantee going on in order of construction.
It should be noted that, the plurality of rated powers pre-stored in the ECU3 are set for different operating conditions, the plurality of power values correspond to the gear of the power adjustment switch 8, and when the power adjustment switch 8 is adjusted to a certain gear according to the operating condition, the ECU3 calls the corresponding rated power value, so that the adjustment of the rated power of the diesel engine 2 is effectively ensured.
, the power adjustment switch 8 includes a structure portion, the structure portion includes a base 82, a knob 81 with an indicator 811 is rotatably disposed in the base 82, the knob 81 has a th gear, a second gear and a third gear, a th operating mode indicator 822, a second operating mode indicator 823 and a third operating mode indicator 824 are disposed on the base 82 at intervals, the th gear corresponds to the th operating mode indicator 822, the second gear corresponds to the second operating mode indicator 823, the third gear corresponds to the third operating mode indicator 824, the power adjustment switch 8 sets three gears, the knob 81 rotates relative to the base 82 to achieve switching between different gears, the indicator 811 is disposed on the knob 81, and the indicator 811 on the knob 81 corresponds to the operating mode indicator disposed on the base 82 to achieve effective correspondence in the gear switching process, and enable the whole switching process to be efficient, and avoid adjustment errors or invalid operations.
It should be understood that the base 82 is used to fix the whole power adjustment switch 8, the base 82 is fixed on the panel of the system control module, and the fixing manner may be screw connection, clamping connection, etc., so as to ensure the stability of the connection and avoid the occurrence of poor contact of the power adjustment switch 8 due to loose action in long-time operation, meanwhile, a can (controller Area network) bus interface 821 is provided at the bottom of the base 82, through which the power adjustment switch 8 is effectively connected with the ECU 3.
, the power adjusting switch 8 further comprises an electrical apparatus part, the electrical apparatus part comprises a movable contact 400, a fixed contact 101, a second fixed contact 202 and a third fixed contact 301, the movable contact 400 is fixed with the knob 81, the fixed contact 101, the second fixed contact 202 and the third fixed contact 301 are respectively arranged in the base 82, the movable contact 400 is electrically connected with the negative electrode of the ECU3, the fixed contact 101, the second fixed contact 202 and the third fixed contact 301 are respectively connected with the positive electrode of the ECU3 through a variable current circuit, the knob 81 can make the movable contact 400 switch among the fixed contact 101, the second fixed contact 202 and the third fixed contact 301 when rotating, so that the rated power threshold preset in the ECU 4 by the movable contact 2 is changed, the movable contact 400 is arranged on the knob 81, three ECU contacts are respectively arranged on the base 82, the movable contact 81 realizes that the movable contact 400 is switched among the three contacts in the rotating process, the movable contact 400 is matched with the rated power adjusting switch threshold of the fixed contact, when the movable contact 400 is switched with the fixed contact, the movable contact 400, the power adjusting switch is matched with the rated power value of the fixed contact, the electric signal is matched with the power adjusting switch 4835, and the electric signal is avoided, when the electric signal is matched with the electric signal, the electric signal matching structure is obtained when the electric signal, the electric signal matching structure is obtained when the electric signal matching process, the electric signal.
It should be understood that the th contact, the second contact and the third contact are arranged independently, and the two connected stationary contacts are spaced at equal distances, that is, the movable contact 400 needs to rotate at equal angles for switching between adjacent gears under the driving of the knob 81.
Specifically, the variable current circuit comprises a third resistor 100, a second resistor 200 and a third resistor 300 which are sequentially connected in series, the third resistor 100 is electrically connected with the stationary contact 101, the second resistor 200 is electrically connected with the second stationary contact 202, the third resistor 300 is electrically connected with the third stationary contact 301, and the positive electrode of the ECU3 is electrically connected with the third resistor 300. in the above-mentioned variable current circuit, on the circuit formed by connecting the second resistor 100, the second resistor 200 and the third resistor 300 in series, when the power adjusting switch 8 is in the gear, the movable contact 400 is in contact with the stationary contact 101, the resistor 100, the second resistor 200 and the third resistor 300 in the variable current circuit simultaneously divide the voltage so that the ECU circuit has the lowest current value, the ECU3 matches the rated power of the operating condition of the third variable current , the maximum power of the diesel engine 2 is kept at the rated power of the operating condition, when the power adjusting switch 8 is in the second gear, the movable contact with the second stationary contact 202, when the ECU is in the third variable current dividing circuit, the rated power circuit, the maximum power of the second variable current dividing circuit is kept at the third variable current circuit, and the third variable current dividing circuit, when the variable current dividing the third variable current dividing circuit is kept at the rated power circuit, the rated power adjusting circuit 301, when the ECU is kept at the rated power adjusting circuit, the rated power of the rated power adjusting circuit, the third variable current dividing structure, the third variable current dividing the rated power adjusting circuit, the third variable current dividing the ECU 362 is kept at the middle of the diesel engine, and the middle of the diesel engine, and.
It should be noted that the th resistor 100, the second resistor 200, and the third resistor 300 may have the same or different resistances, and the specific resistance is determined according to the specific operating condition, i.e., the model of the diesel engine 2.
Specifically, the static contact 101 is arranged at the gear, the second static contact 202 is arranged at the second gear, the third static contact 301 is arranged at the third gear, the gear is a low gear, the second gear is a medium gear, and the third gear is a high gear, the gear is a low gear and corresponds to a working condition with little gas consumption or indirect gas consumption, at the moment, the rated power of the diesel engine 2 after adjustment is lower than half of the rated rotating speed calibrated by the diesel engine 2, the second gear is a medium gear and corresponds to a working condition with medium gas consumption, at the moment, the rated power of the diesel engine 2 after adjustment is half of the rated power calibrated by the diesel engine 2, the third gear is a high gear and corresponds to a working condition with high gas consumption, at the moment, the rated power of the diesel engine 2 after adjustment is equal to the rated power calibrated by the diesel engine 2, and different use requirements can be effectively met through specifically calibrating the working condition.
It should be understood that the actual air consumption of the operating mode corresponding to the th gear is of the rated air consumption of the air compressor 1, the actual air consumption of the operating mode corresponding to the second gear is of the rated air consumption of the air compressor 1, the actual air consumption of the operating mode corresponding to the third gear is the rated air consumption of the air compressor 1, the operating gear to be selected is the second gear when the actual air consumption is between the th gear and the second gear, and the operating gear to be selected is the third gear when the actual air consumption is between the second gear and the third gear.
Specifically, the speed regulating device further comprises electronic oil 4, a driving device is connected to the front end of the electronic oil 4 in a transmission mode, the rear end of the electronic oil 4 is electrically connected with the ECU3, the driving device comprises a servo cylinder 5 connected with the gas tank 7 through a pipeline, a proportional valve 6 is arranged on the pipeline, the electronic oil 4 is controlled through the servo cylinder 5, a gas source of the servo cylinder 5 is derived from the gas tank 7 and is controlled through the proportional valve 6, for example, when the actual gas consumption of a user is of the rated gas consumption, the power regulating switch 8 rotates to a middle gear, when the actual gas consumption of the air compressor 1 is increased from 0 (namely, the gas tank 7 is suddenly increased), the pressure is lower than the set pressure of the proportional valve 6, the proportional valve 6 is closed, namely, no gas flows through the proportional valve 6, the pressure of the servo cylinder 5 is changed to 0, the cylinder stroke is minimum, the oil is maximally opened, and the engine speed cannot reach the rated power n (the rated speed is the rated power n) due to the rated speed, and the rated speed is the rated speed n1(n1< n), diesel engine 2 is in n1When the gas production is greater than the gas consumption at the rotating speed, the gas tank7 pressure rises constantly, and along with the rising of gas pitcher 7 pressure, proportional valve 6 opens, and oil aperture reduces, and the engine speed drops to stable rotational speed gradually, and the user can frequently stop gas, use gas in use, through power adjustment switch 8, can avoid diesel engine 2 to fluctuate frequently between idle speed and the highest empty car rotational speed to reduce the oil consumption of diesel engine 2, and then improve the reliability of diesel engine 2.
Referring to fig. 1 and 6, fig. 1 is a block diagram of the oil-saving speed control system according to the present invention; FIG. 6 is a flow chart of the fuel-saving speed-regulating method provided by the invention.
The invention also provides oil-saving speed-regulating methods implemented by the oil-saving speed-regulating system of the firewood-moving screw air compressor, which comprises the following steps:
and S1, detecting parameters of actual working conditions, and acquiring the parameters of the actual working conditions to know the conditions of the actual working conditions in time, so that effective guarantee can be provided for subsequent judgment and adjustment of the power of the diesel engine 2, the adjustment of the rated power of the diesel engine 2 is more accurate, the oil consumption of the diesel engine 2 is further reduced by , and the reliability of the diesel engine 2 is improved.
S2: calculating actual gas consumption according to the actual working condition parameters; the data of the actual gas consumption amount is more accurate through calculating the parameters, so that the adjustment of the rated power in the later period is more targeted, and the adjusted rated power can be higher than the matching pair of the actual working condition.
S3: adjusting a power adjusting switch 8 to enable the rated power of the diesel engine 2 to be matched with the actual gas consumption; by adjusting the rated power of the diesel engine 2, the diesel engine 2 can effectively reduce energy consumption while meeting the actual working conditions, and the service life and the reliability of the diesel engine 2 are improved.
S4: adjusting a threshold value of the rated power of the diesel engine 2 in the ECU3 to match the optimal rated power; a plurality of rated power threshold values are preset in the ECU3 and are matched with different working conditions, and the actual working conditions are input into the ECU3, and the ECU3 matches the actual working conditions with the corresponding rated power threshold values, so that the diesel engine 2 executes the matched rated power, the diesel engine 2 can meet the actual production, the oil consumption can be effectively reduced, and the reliability of the diesel engine 2 is improved.
S5: and outputting the rotating speed between the idling speed and the optimal rated power.
, in the step S1, the actual working condition parameter includes the actual drill hole diameter d1And the actual drilling depth h1；
In step S2, the calculation formula of the actual gas consumption is:
Figure BDA0001608247530000101
wherein Q is the rated gas consumption, f is a coefficient value of 2, D is the rated drilling diameter, and h is the rated drilling depth.
Specifically, the actual gas consumption is matched with a certain operating mode gear arranged on the power adjusting switch 8, and the power adjusting switch 8 is adjusted to the corresponding operating mode gear according to the actual gas consumption.
Specifically, the threshold value of the rated power of the diesel engine 2 includes a low speed value, a medium speed value and a high speed value, and at the low speed value,
Figure BDA0001608247530000102
at the time of the medium speed value,
Figure BDA0001608247530000103
at the high speed, Q is Q.
According to the oil-saving speed regulation method, the rated power of the diesel engine 2 is regulated according to different working conditions, the change of the rotating speed of the diesel engine 2 is kept in a small range, the oil consumption of the diesel engine 2 is effectively reduced, the exhaust emission meets the environmental protection requirement, meanwhile, the change range of the rotating speed of the diesel engine 2 is small, the service life of the diesel engine 2 can be guaranteed, and the reliability of the diesel engine 2 is effectively improved.
It will be understood that, although the terms , second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

  1. The fuel-saving speed regulation system of the kinds of diesel-driven screw air compressors comprises an air compressor with an air tank, wherein the air compressor is in transmission connection with a diesel engine, and the fuel-saving speed regulation system is characterized in that the diesel engine comprises a speed regulation device, the speed regulation device is connected with the air tank, the speed regulation device comprises an ECU (electronic control unit), the ECU is electrically connected with a power regulation switch with a plurality of gears, and the power regulation switch can enable the rated power of the diesel engine to be matched with the actual working condition;
    the power adjusting switch comprises a structure part, the structure part comprises a base, a knob with an indication mark is rotatably arranged in the base, the knob is provided with an th gear, a second gear and a third gear, th working condition marks, a second working condition mark and a third working condition mark are arranged on the base at intervals, the th gear is arranged corresponding to the th working condition mark, the second gear is arranged corresponding to the second working condition mark, and the third gear is arranged corresponding to the third working condition mark;
    the power adjusting switch comprises an electrical appliance part, the electrical appliance part comprises a movable contact, an th fixed contact, a second fixed contact and a third fixed contact, the movable contact is fixed with the knob, the th fixed contact, the second fixed contact and the third fixed contact are respectively arranged in the base, the movable contact is electrically connected with the negative electrode of the ECU, and the th fixed contact, the second fixed contact and the third fixed contact are respectively connected with the positive electrode of the ECU through a current transformation circuit;
    the stationary contact is disposed at the gear position, the second stationary contact is disposed at the second gear position, the third stationary contact is disposed at the third gear position, the gear position is a low gear position, the second gear position is a medium gear position, and the third gear position is a high gear position;
    when the knob is rotated, the movable contact can be switched among the fixed contact, the second fixed contact and the third fixed contact, so that the rated power threshold of the diesel engine preset in the ECU is changed.
  2. 2. The oil-saving speed regulating system of the diesel screw air compressor as claimed in claim 1, wherein the inverter circuit comprises th resistor, a second resistor and a third resistor connected in series in sequence, the th resistor is electrically connected with the th stationary contact, the second resistor is electrically connected with the second stationary contact, the third resistor is electrically connected with the third stationary contact, and the positive electrode of the ECU is electrically connected with the third resistor.
  3. 3. The oil-saving speed regulating system of the diesel screw air compressor as claimed in claim 1, wherein the speed regulating device further comprises an electronic oil , a driving device is connected to the front end of the electronic oil in a transmission manner, the rear end of the electronic oil is electrically connected to the ECU, the driving device comprises a servo cylinder connected to the air tank through a pipeline, and a proportional valve is arranged on the pipeline.
  4. The fuel-saving speed regulating method of kinds of firewood-moving screw air compressors, which is implemented by the fuel-saving speed regulating system of the firewood-moving screw air compressor as claimed in any of claims 1-3, is characterized in that the fuel-saving speed regulating method comprises the following steps:
    s1: detecting actual working condition parameters;
    s2: calculating actual gas consumption according to the actual working condition parameters;
    s3: adjusting a power adjusting switch to enable the rated power of the diesel engine to be matched with the actual gas consumption;
    s4: adjusting the threshold value of the rated power of a diesel engine in the ECU to match the optimal rated power;
    s5: and outputting the rotating speed between the idling speed and the optimal rated power.
  5. 5. The fuel-saving speed regulation method for diesel screw air compressor as claimed in claim 4, wherein in step S1, the actual operating condition parameter comprises the actual drilling diameter d1And the actual drilling depth h1；
    In step S2, the calculation formula of the actual gas consumption is:
    Figure FDA0002182192660000021
    wherein Q is the rated gas consumption, f is a coefficient value of 2, D is the rated drilling diameter, and h is the rated drilling depth.
  6. 6. The fuel-saving speed regulation method of the firewood-moving screw air compressor as claimed in claim 5, characterized in that the actual gas consumption is matched with a certain operating condition gear arranged on the power regulation switch, and the power regulation switch is regulated to the corresponding operating condition gear according to the actual gas consumption.
  7. 7. The fuel-saving speed regulation method of a diesel-driven screw air compressor as claimed in claim 6, wherein the threshold value of the rated power of the diesel engine comprises a low speed value, a medium speed value and a high speed value, and at the low speed value,
    Figure FDA0002182192660000022
    Figure FDA0002182192660000023
    at the time of the medium speed value,at the high speed, Q is Q.
CN201810252878.2A 2018-03-26 2018-03-26 Oil-saving speed regulating system and method for diesel screw air compressor Active CN108678859B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006057489A (en) * 2004-08-18 2006-03-02 Hitachi Industrial Equipment Systems Co Ltd Compression device
CN101608623A (en) * 2009-07-28 2009-12-23 深圳寿力亚洲实业有限公司 Diesel-driven oil-saving system of screw compressor and method thereof
CN201599196U (en) * 2010-03-04 2010-10-06 张立志 Power saving system of screw air compressor
CN202348675U (en) * 2011-12-12 2012-07-25 北京南口轨道交通机械有限责任公司 Speed regulation device and screw rod compressor
CN202597105U (en) * 2012-03-01 2012-12-12 柳州富达机械有限公司 Oil-saving step-less adjusting system for mobile screw air compressor
CN203035556U (en) * 2012-12-25 2013-07-03 华润电力登封有限公司 Screw type air compressor system and screw type air compressor thereof
CN106523368B (en) * 2016-08-25 2018-03-23 浙江纪超自动化技术有限公司 Bavin moves screw-rod air compressor control flow and its control method
CN206785638U (en) * 2017-05-19 2017-12-22 李延刚 A kind of bavin moves screw compressor control system

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