CN103362813A - Two-stage compression single-screw air compressor and work method thereof - Google Patents
Two-stage compression single-screw air compressor and work method thereof Download PDFInfo
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- CN103362813A CN103362813A CN2013103122171A CN201310312217A CN103362813A CN 103362813 A CN103362813 A CN 103362813A CN 2013103122171 A CN2013103122171 A CN 2013103122171A CN 201310312217 A CN201310312217 A CN 201310312217A CN 103362813 A CN103362813 A CN 103362813A
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Abstract
The invention provides a two-stage compression single-screw air compressor and a work method thereof, belongs to the technical field of machinery, and solves the problems that in the prior art, two-stage compression single-screw air compressors are easy to damage and have low use stability. The two-stage compression single-screw air compressor comprises an electromotor, an air filter, a one-stage gas-oil separation barrel, a two-stage gas-oil separation barrel, a one-stage compression main machine and a two-stage compression main machine, wherein the one-stage compression main machine and the two-stage compression main machine are in series connection without shaft sealing. A two-stage main machine oil-supplement pipe is arranged between air inlets of the one-stage gas-oil separation barrel and the two-stage compression main machine, and the two-stage main machine oil-supplement pipe is provided with an oil-supplement valve. Through the arrangement of the oil-supplement pipe and the oil-supplement valve between the one-stage gas-oil separation barrel and the two-stage compression main machine, excess compressor oil in the one-stage compression main machine can be transmitted back to the two-stage compression main machine, and the normal work of the two-stage compression single-screw air compressor can be ensured. The two-stage compression single-screw air compressor has the advantages of long life, high efficiency and high reliability.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of universal air compressor, particularly a kind of two stage compression single-screw air compressor and method of work thereof.
Background technique
Single screw compressor from the date of birth, just has the structural advantage that to make High-Pressure Compressor, but there is not product to occur on the market always, pertinent literature and paper publishing are not arranged yet, the two stage compression of twin-screw is sold to the type market of 4.0Mpa is existing, but owing to its structural reason, the main frame bearing very easily damages, and rate of fault is very high.The applicant is for above-mentioned situation, once submitted a patent application on June 12nd, 2012, application number is 201210193035.2, application publication number is CN102705238A, this patent disclosure a kind of series type multi-stage screw compressor without shaft seal, be connected in series by some platform independent compression main frames and form, described compression main frame at different levels has separately housing alone, it is characterized in that, the volume of the compression main frame of described series connection at different levels reduces from front to back successively, the screw axis of described adjacent compression main frame is by transmission joint part joint transmission, link together by Sealing between the housing of described adjacent compression main frame, be provided with an oil return through-hole on the described Sealing, described oil return through-hole is connected with the suction port of previous stage main frame.It is in series by the compression main frame of many platform independent, wherein the volume of previous stage main frame is greater than rear one-level main frame, can effectively realize multi-stage booster, thereby so that the exhaust pressure of rear one-level main frame is greater than the previous stage main frame, this multi-stage screw compressor is by arranging the spill port on the flange cylinder simultaneously, the long-pending oil that produces in the flange cylinder can be imported in the main frame of previous stage, at the output shaft of previous stage and the input shaft of rear one-level shaft seal structure is set, thereby avoid the hidden danger of oil accident.Although this equipment has above various advantages, but the front and back level compression main frame of such multi-stage screw compressor connects without shaft seal, and because the inner pressure reduction that exists of front and back level compression main frame, after long-play, compressor oil in the rear one-level compression main frame can infiltrate in the previous stage compression main frame gradually, cause rear one-level compression main frame to affect using effect for shortage of oil, and such multi-stage screw compressor needs to spray into water in gas compression processes or the wet goods medium mixes, simultaneously, in the air compressing process, can produce the moisture of certain ratio, if this air is directly discharged afterwards in compressed use, then pollute the environment, thereby air needs before discharge through separating in the deaerator, the fluid of after separating is back in the compression main frame and uses, if the impurity of the fluid of after separating is more, then tends to have a strong impact on lubricating condition and the greasy property of moving element in the compressor, even can further have influence on ride quality and the working life of described helical-lobe compressor.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, proposed a kind of two stage compression single-screw air compressor and method of work thereof, it has the long lifetime, high efficiency, the advantage of high reliability.
Purpose of the present invention can realize by following technical proposal: a kind of two stage compression single-screw air compressor, it is characterized in that, comprise motor, air filter, one-level oil gas separating barrel, secondary Oil-gas Separation bucket, the primary oil cooler and the one-level Gas Cooler that are connected with one-level oil gas separating barrel, the secondary oil cooler and the secondary Gas Cooler that are connected with secondary Oil-gas Separation bucket, and the one-level that is serially connected without shaft seal compression main frame and two-stage compression main frame, be provided with the one-level oil cut-off valve on the described one-level compression main frame, be provided with the secondary oil cut-off valve on the described two-stage compression main frame, described one-level compression main frame is connected with motor, the suction port of described one-level compression main frame is connected with air filter, described one-level oil gas separating barrel is connected with the relief opening of one-level compression main frame, be connected with the primary oil cooler on the oil outlet of described one-level oil gas separating barrel, described one-level oil cut-off valve is connected with the primary oil cooler, be connected with the one-level Gas Cooler on the air outlet of described one-level oil gas separating barrel, the suction port of described two-stage compression main frame is connected with described one-level Gas Cooler, described secondary Oil-gas Separation bucket is connected with the relief opening of two-stage compression main frame, be connected with the secondary oil cooler on the oil outlet of described secondary Oil-gas Separation bucket, described secondary oil cut-off valve is connected with the secondary oil cooler, be connected with on the air outlet of described secondary Oil-gas Separation bucket for the secondary Gas Cooler with air cooling and output, also be provided with a secondary main frame repairing pipe between the suction port of described one-level oil gas separating barrel and two-stage compression main frame, be provided with Fill valve on the described secondary main frame repairing pipe.
In the technical program, air compresses twice pressurization of carrying out of main frame, one-level oil gas separating barrel, one-level Gas Cooler, two-stage compression main frame, secondary Oil-gas Separation bucket and secondary Gas Cooler successively through air filter, one-level, can be with higher Output pressure, and compressor oil is respectively between one-level compression main frame, one-level oil gas separating barrel and primary oil cooler, and form two short circles between two-stage compression main frame, secondary Oil-gas Separation bucket and the secondary oil cooler, respectively one-level is compressed the difference circulating lubrication of main frame and two-stage compression main frame.Because the compression main frame of the one-level in the technical program and two-stage compression main frame are for to be serially connected without shaft seal, and because the pressure in the two-stage compression main frame is greater than the pressure of one-level compression main frame, in the long-play process, compressor oil in the two-stage compression main frame slowly seepage compresses main frame as for one-level, by being arranged on repairing pipe and the Fill valve of one-level oil gas separating barrel and two-stage compression main frame, one-level can be compressed compressor oil too much in the main frame and be fed back to the two-stage compression main frame, guarantee the normal operation of this air compressor.
In above-mentioned two stage compression single-screw air compressor, be provided with oil level indicator on the described secondary Oil-gas Separation bucket.This oil level indicator is for detection of the storage of the compressor oil of secondary Oil-gas Separation bucket, when the oil level in oil level indicator detects secondary Oil-gas Separation bucket is in low level, then Fill valve is opened, pressure reduction between the suction port of dependence one-level oil gas separating barrel and two-stage compression main frame, compressor oil is added in the secondary Oil-gas Separation bucket from one-level oil gas separating barrel, when the oil level in oil level indicator detects secondary Oil-gas Separation bucket is in a high position, when perhaps the Fill valve opening time reaches the systemic presupposition value, then Fill valve is closed.
In above-mentioned two stage compression single-screw air compressor, be provided with butterfly valve between the suction port of described air filter and one-level compression main frame, be provided with the one-level return filter that is connected with one-level oil gas separating barrel on the described butterfly valve.Butterfly valve namely is used for importing air, can match with one-level oil gas separating barrel again, guarantees the sealing of one-level compression main frame inside.
In above-mentioned two stage compression single-screw air compressor, be provided with one-level emptying solenoid valve and secondary emptying solenoid valve between described loaded valve and the one-level compression main frame, described one-level emptying solenoid valve is connected with one-level oil gas separating barrel, be provided with one between described one-level emptying solenoid valve and the butterfly valve and load solenoid valve, described loading solenoid valve is connected with cylinder, and described secondary emptying solenoid valve is connected with secondary Oil-gas Separation bucket.Load solenoid valve and butterfly valve and form loaded valve, the intake grill place pressure that can make one-level compress main frame remains that one strengthens the additional force of sealing before reaching cracking pressure, guarantees that air filter is to the normal air feed of one-level compression main frame.
In above-mentioned two stage compression single-screw air compressor, be provided with the one-level moisture trap between the suction port of described one-level Gas Cooler and two-stage compression main frame, be provided with automatic drain valve on the described moisture trap.The gas mixture that one-level compression main frame is discharged cools off through the one-level Gas Cooler after separation has part through one-level oil gas separating barrel, separate moisture through the one-level moisture trap again, and by the moisture discharge of automatic drain valve with separation, be input at last the suction port of two-stage compression main frame, this moisture trap can guarantee to enter the air drying property of two-stage compression main frame, avoids affecting compressor oil purity and lubrication effect in the two-stage compression main frame.
In above-mentioned two stage compression single-screw air compressor, be provided with the first class pressure transmitter between the air outlet of described one-level oil gas separating barrel and the one-level Gas Cooler, be provided with the one-level minimum pressure valve between the suction port of described moisture trap and two-stage compression main frame, be provided with secondary minimum pressure valve and secondary pressure transmitter between the air outlet of described secondary Oil-gas Separation bucket and the secondary Gas Cooler.Pressure transmitter refers to be output as the pressure transducer of standard signal, is a kind of pressure variations of accepting, and after the sensing conversion, pressure variety is converted to by a certain percentage the instrument of standard output signals.By load cell, measuring circuit and process link three parts are made, the gas that it can be experienced load cell, the physical pressure parameters such as liquid are transformed into the electrical signal of standard, to supply with indicator alarm, recorder, the secondary meters such as regulator are measured, indication and procedure regulation, the one-level minimum pressure valve is mainly used in setting up in the two-stage SCREW COMPRESSOR and presses, impel the circulation of two-stage compression main frame compressor oil, secondary minimum pressure valve and secondary pressure transmitter are used, play one-way exhaust, prevent that isolated compression flows backward in secondary Oil-gas Separation bucket and the two-stage compression main frame in the secondary Oil-gas Separation bucket.
In above-mentioned two stage compression single-screw air compressor, be provided with primary safety valve for inner container on the described one-level oil gas separating barrel, be provided with secondary safety valve on the described secondary Oil-gas Separation bucket.When the air pressure in the Oil-gas Separation bucket surpassed setting value, corresponding safety valve was opened automatically, bleeds off the part air, thereby reduced the air pressure in the Oil-gas Separation bucket, guaranteed the Security that the Oil-gas Separation bucket uses.
In above-mentioned two stage compression single-screw air compressor, the volume of described one-level compression main frame is greater than the volume of two-stage compression main frame, the screw axis of described one-level compression main frame and the screw axis of two-stage compression main frame are connected by coupling, be connected by the one-level connecting cylinder between described one-level compression main frame and the motor, be connected by the secondary connecting cylinder between described two-stage compression main frame and the one-level compression main frame.Be to connect without shaft seal between one-level compression main frame and the two-stage compression main frame, keep sealing by air pressure.
A kind of method of work of two stage compression single-screw air compressor, it is characterized in that, described one-level compression main frame is by the air filter input air, air through the compression of one-level compression main frame after and the compressor oil formation gas mixture that is mixed, the relief opening of this gas mixture by one-level compression main frame enters and carries out one time Oil-gas Separation in the one-level oil gas separating barrel, compressor oil after the first separation is fed back in the one-level compression main frame through primary oil cooler and one-level oil cut-off valve, enter into after pressurized air after the first separation cools off through the one-level Gas Cooler and enter again the two-stage compression main frame after moisture trap is discharged unnecessary moisture, and mix and again form gas mixture with compressor oil in the two-stage compression main frame, the relief opening of this gas mixture by the two-stage compression main frame enters and carries out secondary oil gas in the secondary Oil-gas Separation bucket and separate, compressor oil after the secondary separation is fed back in the two-stage compression main frame through secondary oil cooler and secondary oil cut-off valve, pressurized air after the secondary separation is through the backward extraneous output of secondary Gas Cooler cooling, when the compressor oil pasta after separating in the oil level indicator on the secondary Oil-gas Separation bucket detects secondary Oil-gas Separation bucket is lower than the low value of systemic presupposition, Fill valve is opened, compressor oil in the one-level oil gas separating barrel after the first separation enters the two-stage compression main frame by pressure reduction by one-level oil gas separating barrel, compressor oil to two-stage compression main frame and secondary Oil-gas Separation bucket replenishes, high value or Fill valve opening time that compressor oil pasta after separating in oil level indicator detects secondary Oil-gas Separation bucket is higher than systemic presupposition reach the systemic presupposition time, and Fill valve is closed.
In the technical program, air compresses step by step through one-level compression main frame and two-stage compression main frame and discharges, oil level indicator detect the interior compressor oil fuel head of secondary Oil-gas Separation bucket with judge whether need to be from one-level oil gas separating barrel to the oil transportation of secondary Oil-gas Separation bucket,
In the method for work of above-mentioned two stage compression single-screw air compressor, described one-level oil cut-off valve and secondary oil cut-off valve are opened simultaneously or are closed.The sealing of the single-screw air compressor in the technical program is by a kind of very cleverly labyrinth seal structure and adjusts with the pressure difference value of one-level compression main frame and two-stage compression main frame and realize, one-level oil cut-off valve and secondary oil cut-off valve can guarantee that one-level compression main frame and two-stage compression main frame can be lubricated simultaneously, avoid compressing main frame and are burned.
Compared with prior art, the present invention has following advantage: 1, air is through two stage compression, and pressure is high, power consumption is more economized, and can be applicable to simultaneously various types of air compressor structures, and Applicable scope is wider; 2, the shaftless envelope that is sealed between the two stage compression main frame, and have separately a circulating oil path, high lubricating effect; 3, by moisture trap, will compress the air removal moisture that main frame is discharged by one-level, so that this single-screw air compressor more stable work increases the service life; 4, repairing pipe and Fill valve are set, guarantee that this single-screw air compressor can long time running and do not break down.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is pipeline connecting figure of the present invention.
Fig. 3 is system flow chart of the present invention.
Among the figure, 1, the two-stage compression main frame; 2, secondary connecting cylinder; 3, one-level compression main frame; 4, one-level connecting cylinder; 5, add carrier gas cylinder; 6, vibration damper; 7, load solenoid valve; 8, automatic drain valve; 9, motor; 10, moisture trap; 11, one-level minimum pressure valve; 12, one-level Gas Cooler; 13, secondary Gas Cooler; 14, Fill valve; 15, repairing filter; 16, one-level oil gas separating barrel; 17, first class pressure transmitter; 18, secondary pressure transmitter; 19, primary safety valve for inner container; 20, secondary minimum pressure valve; 21, secondary oil strainer; 22, pressure gauge; 23, secondary Oil-gas Separation bucket; 24, secondary safety valve; 25, one-level emptying solenoid valve; 26, secondary emptying solenoid valve; 27, oil level indicator; 28, secondary oil cooler; 29, one-level air inlet tube; 30, butterfly valve; 31, one-level Fuel Cut Solenoid Valve; 32, one-level atmospheric valve; 33, one-level oil cut-off valve; 34, primary oil cooler; 35, secondary Fuel Cut Solenoid Valve; 36, secondary oil cut-off valve; 37; The primary oil filter; 37, air filter; 38, secondary air inlet seat; 39, secondary main frame suction tude; 40, primary oil cooler oil inlet pipe; 41, one-level main exhaust pipe; 42, secondary main exhaust pipe; 43, one-level Gas Cooler suction tude; 44, secondary Gas Cooler suction tude; 45, secondary oil cooler oil inlet pipe; 46, secondary oil cooler oil outlet tube; 47, one-level main frame oil inlet pipe; 48, secondary main frame oil inlet pipe; 49, one-level main frame air induction hose; 50, secondary main frame repairing pipe; 51, primary oil cooler oil outlet tube; 52, one-level temperature transducer; 53, secondary temperature transducer; 54, one-level blowdown valve; 55, secondary blowdown valve; 56, one-level return filter; 57, secondary return filter; 58, pressurized air delivery valve; 59, emptying flow modulating valve; 60, cylinder; 61, air filter; 62, one-level exhaust check valve; 63, secondary exhaust check valve
Embodiment
Below be specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
With reference to Fig. 1, the present invention is a kind of two stage compression single-screw air compressor, comprise motor 9, air filter 61, two-stage SCREW COMPRESSOR, one-level oil gas separating barrel 16 and secondary Oil-gas Separation bucket 23, the two-stage SCREW COMPRESSOR comprises one-level compression main frame 3 and the two-stage compression main frame 1 that is serially connected without shaft seal structure by labyrinth sealed, one-level compression main frame 3 is connected with motor 9 by one-level connecting cylinder 4, and two-stage compression main frame 1 is connected with one-level compression main frame 3 by secondary connecting cylinder 2.Be provided with primary safety valve for inner container 19 on the one-level oil gas separating barrel 16, be provided with secondary safety valve 24 on the secondary Oil-gas Separation bucket 23.
With reference to Fig. 1, Fig. 2 and Fig. 3, be provided with butterfly valve 30 and one-level air inlet tube 29 on the one-level compression main frame 3, be provided with one-level emptying solenoid valve 25, secondary emptying solenoid valve 26 and emptying flow modulating valve 59 on the butterfly valve 30, emptying flow modulating valve 59 is used for regulating the emptying amount, to guarantee the sealing of one-level compression main frame 3.One-level emptying solenoid valve 25 is connected with one-level oil gas separating barrel 16, also is provided with one between one-level emptying solenoid valve 25 and the butterfly valve 30 and loads solenoid valve 7, and this loading solenoid valve 7 is connected with cylinder 60.Be provided with the one-level return filter 56 that is connected with one-level oil gas separating barrel 16 on the butterfly valve 30.Secondary emptying solenoid valve 26 is connected with secondary Oil-gas Separation bucket 23.Be connected by one-level main frame air induction hose 49 between air inlet tube 29 and the air filter 61, the relief opening of one-level compression main frame 3 is connected with one-level oil gas separating barrel 16 by one-level main exhaust pipe 41, one-level Gas Cooler 12 is connected on the air outlet of one-level oil gas separating barrel 16 by one-level Gas Cooler suction tude 43, this one-level Gas Cooler suction tude 43 be provided with first class pressure transmitter 17, secondary air inlet seat 38 on the two-stage compression main frame 1 is connected with one-level Gas Cooler 12 by secondary main frame suction tude 39, also be provided with secondary return filter 57 between the suction port of two-stage compression main frame 1 and the two-stage compression main frame 1, be provided with moisture trap 10 on the secondary main frame suction tude 39, be provided with the automatic drain valve 8 that isolated moisture can be discharged on the moisture trap 10, be provided with one-level pressure minimum device 11 on the air outlet of moisture trap 10, the relief opening of two-stage compression main frame 1 is connected with secondary Oil-gas Separation bucket 23 by secondary main exhaust pipe 42, be provided with secondary minimum pressure valve 20 on the air outlet of secondary Oil-gas Separation bucket 23, secondary Gas Cooler 13 is connected on the secondary minimum pressure valve 20 by secondary Gas Cooler suction tude 44, also be provided with secondary pressure transmitter 18 on the secondary Gas Cooler suction tude 44, be connected with pressurized air delivery valve 58 on the air outlet of secondary Gas Cooler 13, above-mentioned is air compressing flow line structure in the present embodiment.
See figures.1.and.2, primary oil cooler 34 is connected by the oil outlet of primary oil cooler oil inlet pipe 40 with one-level oil gas separating barrel 16, primary oil cooler 34 is connected with one-level oil cut-off valve 33 by primary oil cooler oil outlet tube 51, also be provided with primary oil filter 37 on this primary oil cooler 34, be provided with one-level Fuel Cut Solenoid Valve 31 on the one-level oil cut-off valve 33, thereby compressor oil looped back transport in the one-level compression main frame 3, above-mentioned be the compressor oil circulating pipeline structure capable that one-level is compressed main frame 3 in the present embodiment.
See figures.1.and.2, secondary oil cooler 28 is connected by the oil outlet of secondary oil cooler oil inlet pipe 45 with secondary Oil-gas Separation bucket 23, secondary oil cooler 28 is connected with secondary oil cut-off valve 36 by secondary oil cooler oil outlet tube 46, also be provided with secondary oil strainer 21 on this secondary oil cooler oil outlet tube 46, be provided with secondary Fuel Cut Solenoid Valve 35 on the secondary oil cut-off valve 36, thereby compressor oil looped back transport in the two-stage compression main frame 1, above-mentioned is the compressor oil circulating pipeline structure capable of two-stage compression main frame 1 in the present embodiment.
See figures.1.and.2, secondary Oil-gas Separation bucket 23 is provided with oil level indicator 17, be connected by secondary main frame repairing pipe 5 between the suction port of one-level oil gas separating barrel 16 and two-stage compression main frame 1, be provided with Fill valve 14 on this secondary main frame repairing pipe 5, be provided with repairing filter 15 on the filler opening of this Fill valve 14.
With reference to Fig. 3, the method of work of the two stage compression single-screw air compressor in the present embodiment is as follows, one-level compression main frame 3 is by air filter 61 input airs, air through 3 compressions of one-level compression main frame after and the compressor oil formation gas mixture that is mixed, the relief opening of this gas mixture by one-level compression main frame 3 enters and carries out one time Oil-gas Separation in the one-level oil gas separating barrel 16, compressor oil after the first separation is fed back in the one-level compression main frame 3 through primary oil cooler 34 and one-level oil cut-off valve 33, enter into after pressurized air after the first separation cools off through one-level Gas Cooler 12 and enter again two-stage compression main frame 1 after moisture trap 10 is discharged unnecessary moisture, and mix and again form gas mixture with compressor oil in the two-stage compression main frame 1, the relief opening of this gas mixture by two-stage compression main frame 1 enters and carries out secondary oil gas in the secondary Oil-gas Separation bucket 23 and separate, compressor oil after the secondary separation is fed back in the two-stage compression main frame 1 through secondary oil cooler 28 and secondary oil cut-off valve 35, pressurized air after the secondary separation is exported to the external world by pressurized air delivery valve 58 after cooling off through secondary Gas Cooler 13, when the compressor oil pasta after the oil level indicator 27 on the secondary Oil-gas Separation bucket 23 detects the 23 interior separation of secondary Oil-gas Separation bucket is lower than the low value of systemic presupposition, Fill valve 14 is opened, compressor oil after the 16 interior first separations of one-level oil gas separating barrel enters two-stage compression main frame 1 by pressure reduction by one-level oil gas separating barrel 16, compressor oil to two-stage compression main frame 1 and secondary Oil-gas Separation bucket 23 replenishes, high value or Fill valve 14 opening times that compressor oil pasta after oil level indicator 27 detects the 23 interior separation of secondary Oil-gas Separation bucket is higher than systemic presupposition reach the systemic presupposition time, and Fill valve 14 is closed.
The volume of one-level compression main frame 3 is greater than the volume of two-stage compression main frame 1 in the present embodiment, the screw axis of one-level compression main frame 3 and the screw axis of two-stage compression main frame 1 are connected by coupling, and the inner chamber of one-level compression main frame 3 and the intracavity inter-connection of two-stage compression main frame 1.Present embodiment when work one-level oil cut-off valve 33 and secondary oil cut-off valve 35 open simultaneously or close, can guarantee that one-level compression main frame 3 and two-stage compression main frame 1 pressure difference value keep constant, avoid occuring leakage of oil between the two, so that one-level compression main frame 3 and two-stage compression main frame 1 can obtain lubricated and cooling simultaneously, avoid scaling loss simultaneously.
Two-stage SCREW COMPRESSOR in the present embodiment is without shaft seal structure, [application number is 201210193035.2 in a patent application that this structure is formerly submitted at me, the applying date: on June 12nd, 2012, application publication number is CN102705238A] in be documented, this paper repeats no more.
Specific embodiment described herein only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more used two-stage compression main frame 1, secondary connecting cylinder 2, one-level compression main frame 3, one-level connecting cylinder 4, add carrier gas cylinder 5, vibration damper 6, load solenoid valve 7, automatic drain valve 8, motor 9, moisture trap 10, one-level minimum pressure valve 11, one-level Gas Cooler 12, secondary Gas Cooler 13, Fill valve 14, repairing filter 15, one-level oil gas separating barrel 16, first class pressure transmitter 17, secondary pressure transmitter 18, primary safety valve for inner container 19, secondary minimum pressure valve 20, secondary oil strainer 21, pressure gauge 22, secondary Oil-gas Separation bucket 23, secondary safety valve 24, one-level emptying solenoid valve 25, secondary emptying solenoid valve 26, oil level indicator 27, secondary oil cooler 28, one-level air inlet tube 29, butterfly valve 30, one-level Fuel Cut Solenoid Valve 31, one-level atmospheric valve 32, one-level oil cut-off valve 33, primary oil cooler 34, secondary Fuel Cut Solenoid Valve 35, secondary oil cut-off valve 36, primary oil filter 37; Air filter 37, secondary air inlet seat 38, secondary main frame suction tude 39, primary oil cooler oil inlet pipe 40, one-level main exhaust pipe 41, secondary main exhaust pipe 42, one-level Gas Cooler suction tude 43, secondary Gas Cooler suction tude 44, secondary oil cooler oil inlet pipe 45, secondary oil cooler oil outlet tube 46, one-level main frame oil inlet pipe 47, secondary main frame oil inlet pipe 48, one-level main frame air induction hose 49, secondary main frame repairing pipe 50, primary oil cooler oil outlet tube 51, one-level temperature transducer 52, secondary temperature transducer 53, one-level blowdown valve 54, secondary blowdown valve 55, one-level return filter 56, secondary return filter 57, pressurized air delivery valve 58, emptying flow modulating valve 59, cylinder 60, air filter 61, one-level exhaust check valve 62, secondary exhaust check valve 63 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (10)
1. two stage compression single-screw air compressor, it is characterized in that, comprise motor (9), air filter (61), one-level oil gas separating barrel (16), secondary Oil-gas Separation bucket (23), the primary oil cooler (34) that is connected with one-level oil gas separating barrel (16) and one-level Gas Cooler (12), the secondary oil cooler (28) that is connected with secondary Oil-gas Separation bucket (23) and secondary Gas Cooler (13), and the one-level that is serially connected without shaft seal compression main frame (3) and two-stage compression main frame (1), be provided with one-level oil cut-off valve (33) on the described one-level compression main frame (3), be provided with secondary oil cut-off valve (36) on the described two-stage compression main frame (1), described one-level compression main frame (3) is connected with motor (9), the suction port of described one-level compression main frame (3) is connected with air filter (61), described one-level oil gas separating barrel (16) is connected with the relief opening of one-level compression main frame (3), be connected with primary oil cooler (34) on the oil outlet of described one-level oil gas separating barrel (16), described one-level oil cut-off valve (33) is connected with primary oil cooler (34), be connected with one-level Gas Cooler (12) on the air outlet of described one-level oil gas separating barrel (16), the suction port of described two-stage compression main frame (1) is connected with described one-level Gas Cooler (12), described secondary Oil-gas Separation bucket (23) is connected with the relief opening of two-stage compression main frame (1), be connected with secondary oil cooler (28) on the oil outlet of described secondary Oil-gas Separation bucket (23), described secondary oil cut-off valve (36) is connected with secondary oil cooler (28), be connected with on the air outlet of described secondary Oil-gas Separation bucket (23) for the secondary Gas Cooler (13) with air cooling and output, also be provided with a secondary main frame repairing pipe (5) between the suction port of described one-level oil gas separating barrel (16) and two-stage compression main frame (1), be provided with Fill valve (14) on the described secondary main frame repairing pipe (5).
2. two stage compression single-screw air compressor according to claim 1 is characterized in that, is provided with oil level indicator (27) on the described secondary Oil-gas Separation bucket (23).
3. two stage compression single-screw air compressor according to claim 1, it is characterized in that, be provided with butterfly valve (30) between the suction port of described air filter (61) and one-level compression main frame (3), be provided with the one-level return filter (56) that is connected with one-level oil gas separating barrel (16) on the described butterfly valve (30).
4. two stage compression single-screw air compressor according to claim 3, it is characterized in that, be provided with one-level emptying solenoid valve (25) and secondary emptying solenoid valve (26) between described butterfly valve (30) and the one-level compression main frame (3), described one-level emptying solenoid valve (25) is connected with one-level oil gas separating barrel (16), be provided with one between described one-level emptying solenoid valve (25) and the butterfly valve (30) and load solenoid valve (7), described loading solenoid valve (7) is connected with cylinder (60), and described secondary emptying solenoid valve (26) is connected with secondary Oil-gas Separation bucket (23).
5. two stage compression single-screw air compressor according to claim 1, it is characterized in that, be provided with one-level moisture trap (10) between the secondary suction port (38) of described one-level Gas Cooler (12) and two-stage compression main frame (1), be provided with automatic drain valve (8) on the described moisture trap (10).
6. two stage compression single-screw air compressor according to claim 5, it is characterized in that, be provided with first class pressure transmitter (17) between the air outlet of described one-level oil gas separating barrel (16) and the one-level Gas Cooler (12), be provided with one-level minimum pressure valve (11) between the suction port of described moisture trap (10) and two-stage compression main frame (1), be provided with secondary minimum pressure valve (20) and secondary pressure transmitter (18) between the secondary air outlet of described secondary Oil-gas Separation bucket (23) and the secondary Gas Cooler (13).
7. two stage compression single-screw air compressor according to claim 1 is characterized in that, is provided with primary safety valve for inner container (19) on the described one-level oil gas separating barrel (16), is provided with secondary safety valve (24) on the described secondary Oil-gas Separation bucket (23).
8. according to claim 1 and 2 or 3 or 4 or 5 or 6 or 7 described two stage compression single-screw air compressors, it is characterized in that, the volume of described one-level compression main frame (3) is greater than the volume of two-stage compression main frame (1), the screw axis of described one-level compression main frame (3) and the screw axis of two-stage compression main frame (1) are connected by coupling, be connected by one-level connecting cylinder (4) between described one-level compression main frame (3) and the motor, described two-stage compression main frame (1) and one-level are compressed between the main frame (3) and are connected by secondary connecting cylinder (2).
9. the method for work of a two stage compression single-screw air compressor, it is characterized in that, described one-level compression main frame (3) is by air filter (61) input air, air through one-level compression main frame (3) compression after and the compressor oil formation gas mixture that is mixed, the relief opening that this gas mixture compresses main frame (3) by one-level enters and carries out one time Oil-gas Separation in the one-level oil gas separating barrel (16), compressor oil after the first separation is fed back in the one-level compression main frame (3) through primary oil cooler (34) and one-level oil cut-off valve (33), enter into after pressurized air after the first separation cools off through one-level Gas Cooler (12) and enter again two-stage compression main frame (1) after moisture trap (10) is discharged unnecessary moisture, and mix and again form gas mixture with compressor oil in the two-stage compression main frame (1), the relief opening of this gas mixture by two-stage compression main frame (1) enters and carries out secondary oil gas in the secondary Oil-gas Separation bucket (23) and separate, compressor oil after the secondary separation is fed back in the two-stage compression main frame (1) through secondary oil cooler (28) and secondary oil cut-off valve (36), pressurized air after the secondary separation is through the backward extraneous output of secondary Gas Cooler (13) cooling, when the oil level indicator (27) on the secondary Oil-gas Separation bucket (23) detects in the secondary Oil-gas Separation bucket (23) compressor oil pasta after separating and is lower than the low value of systemic presupposition, Fill valve (14) is opened, compressor oil after the interior first separation of one-level oil gas separating barrel (16) enters two-stage compression main frame (1) by pressure reduction by one-level oil gas separating barrel (16), compressor oil to two-stage compression main frame (1) and secondary Oil-gas Separation bucket (23) replenishes, high value or Fill valve (14) opening time that compressor oil pasta after separating in oil level indicator (27) detects secondary Oil-gas Separation bucket (23) is higher than systemic presupposition reach the systemic presupposition time, and Fill valve (14) is closed.
10. the method for work of two stage compression single-screw air compressor according to claim 9 is characterized in that, described one-level oil cut-off valve (33) and secondary oil cut-off valve (36) are opened simultaneously or closed.
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Effective date of registration: 20180622 Address after: 317106 port town, PUBA Town, three gate County, Taizhou, Zhejiang (industrial agglomeration area) Patentee after: Zhejiang Jieneng Compress Equipment Co., Ltd. Address before: 318000 Tung Chi Yang village, 33 Zhi Zhi street, Jiaojiang District, Taizhou, Zhejiang Patentee before: Xu Daomin |