CN103362813B - A kind of two stage compression single-screw air compressor and method of work thereof - Google Patents
A kind of two stage compression single-screw air compressor and method of work thereof Download PDFInfo
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- CN103362813B CN103362813B CN201310312217.1A CN201310312217A CN103362813B CN 103362813 B CN103362813 B CN 103362813B CN 201310312217 A CN201310312217 A CN 201310312217A CN 103362813 B CN103362813 B CN 103362813B
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- 238000007906 compression Methods 0.000 title claims abstract description 191
- 230000006835 compression Effects 0.000 title claims abstract description 190
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 178
- 238000000926 separation method Methods 0.000 claims abstract description 79
- 239000010725 compressor oil Substances 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims description 17
- 230000009885 systemic effect Effects 0.000 claims description 10
- 235000015927 pasta Nutrition 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 121
- 239000000446 fuel Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 230000006698 induction Effects 0.000 description 3
- 239000012159 carrier gas Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002463 transducing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a kind of two stage compression single-screw air compressor and method of work thereof, belong to field of mechanical technique.It solve the fragile and problem that stability in use is not high of existing two stage compression single-screw air compressor.This two stage compression single-screw air compressor, comprise motor, air filter, one-level oil gas separating barrel, secondary Oil-gas Separation bucket and the one stage of compression main frame be serially connected without shaft seal and two-stage compression main frame, also be provided with a secondary main frame repairing pipe between described one-level oil gas separating barrel and the suction port of two-stage compression main frame, described secondary main frame repairing pipe is provided with Fill valve.Compressor oil too much in one stage of compression main frame, by being arranged on repairing pipe and the Fill valve of one-level oil gas separating barrel and two-stage compression main frame, can being fed back to two-stage compression main frame, ensureing the normal work of this air compressor by it.It has the long lifetime, high efficiency, the advantage of 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 there is the structural advantage can making High-Pressure Compressor, but market there is not always product occur, pertinent literature and paper publishing is not had yet, the two stage compression of twin-screw is existing to the type market of 4.0Mpa sells, but due to its structural reason, main frame bearing very easily damages, and rate of fault is very high.The applicant is for above-mentioned situation, once have submitted a patent application on June 12nd, 2012, application number is 201210193035.2, application publication number is CN102705238A, which disclose 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 frames at different levels have respective 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 drive link joint transmission, linked together by Sealing between the housing of described adjacent compression main frame, described Sealing is provided with an oil return through-hole, described oil return through-hole is connected with the suction port of previous stage main frame.It independently compresses main frame by multiple stage and is in series, wherein the volume of previous stage main frame is greater than rear stage main frame, effectively can realize multi-stage booster, thus make the exhaust pressure of rear stage main frame be greater than previous stage main frame, this multi-stage screw compressor is by arranging the spill port on flange cylinder simultaneously, can the long-pending oil produced in flange cylinder be imported in the main frame of previous stage, the output shaft of previous stage and the input shaft of rear stage arrange shaft seal structure, thus avoids the hidden danger of oil accident.Although this equipment has above various advantages, but the front stage of such multi-stage screw compressor compression main frame connects without shaft seal, and due to the inner pressure reduction existed of front stage compression main frame, after long-play, compressor oil in rear stage compression main frame can infiltrate in previous stage compression main frame gradually, cause rear stage to compress main frame and affect using effect for shortage of oil, and such multi-stage screw compressor needs to spray into water in gas compression processes or wet goods medium mixes, simultaneously, the moisture of certain ratio can be produced in air compressing process, if this air is directly discharged after being used by compression, then pollute the environment, thus air needs to be separated in deaerator before discharge, fluid after separation is back in compression main frame and uses, if the impurity of the fluid after being separated is more, then often have a strong impact on lubricating condition and the greasy property of moving element in compressor, even can have influence on ride quality and the working life of described helical-lobe compressor further.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose 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.
Object of the present invention realizes 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 be connected with one-level oil gas separating barrel and one-level Gas Cooler, the secondary oil cooler be connected with secondary Oil-gas Separation bucket and secondary Gas Cooler, and the one stage of compression main frame to be serially connected without shaft seal and two-stage compression main frame, described one stage of compression main frame is provided with one-level oil cut-off valve, described two-stage compression main frame is provided with secondary oil cut-off valve, described one stage of compression main frame is connected with motor, the suction port of described one stage of compression main frame is connected with air filter, described one-level oil gas separating barrel is connected with the relief opening of one stage of compression main frame, the oil outlet of described one-level oil gas separating barrel is connected with primary oil cooler, described one-level oil cut-off valve is connected with primary oil cooler, the air outlet of described one-level oil gas separating barrel is connected with one-level Gas Cooler, 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, the oil outlet of described secondary Oil-gas Separation bucket is connected with secondary oil cooler, described secondary oil cut-off valve is connected with secondary oil cooler, the air outlet of described secondary Oil-gas Separation bucket is connected with the secondary Gas Cooler for also being exported by Air flow, a secondary main frame repairing pipe is also provided with between described one-level oil gas separating barrel and the suction port of two-stage compression main frame, described secondary main frame repairing pipe is provided with Fill valve.
In the technical program, air carries out twice pressurization successively through air filter, one stage of compression 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, can with higher Output pressure, and compressor oil respectively at one stage of compression main frame, between one-level oil gas separating barrel and primary oil cooler, and two-stage compression main frame, between secondary Oil-gas Separation bucket and secondary oil cooler, form two short circles, with respectively to the difference circulating lubrication of one stage of compression main frame and two-stage compression main frame.Because the one stage of compression main frame in the technical program and two-stage compression main frame are for be serially connected without shaft seal, and because the pressure in two-stage compression main frame is greater than the pressure of one stage of compression main frame, in long-play process, compressor oil in two-stage compression main frame will slowly seepage as one stage of compression main frame, by being arranged on repairing pipe and the Fill valve of one-level oil gas separating barrel and two-stage compression main frame, compressor oil too much in one stage of compression main frame can be fed back to two-stage compression main frame, ensure the normal work of this air compressor.
In above-mentioned two stage compression single-screw air compressor, described secondary Oil-gas Separation bucket is provided with oil level indicator.This oil level indicator is for detecting the storage of the compressor oil of secondary Oil-gas Separation bucket, when the oil level that oil level indicator detects in secondary Oil-gas Separation bucket is in low level, then Fill valve is opened, rely on the pressure reduction between one-level oil gas separating barrel and the suction port of two-stage compression main frame, compressor oil is added in secondary Oil-gas Separation bucket from one-level oil gas separating barrel, when the oil level indicator oil level detected in secondary Oil-gas Separation bucket is in a high position, or when Fill valve opening time reaches systemic presupposition value, then Fill valve is closed.
In above-mentioned two stage compression single-screw air compressor, between the suction port of described air filter and one stage of compression main frame, be provided with butterfly valve, described butterfly valve be provided with the one-level return filter be connected with one-level oil gas separating barrel.Butterfly valve, namely for importing air, can match with one-level oil gas separating barrel again, ensures the sealing of one stage of compression main frame inside.
In above-mentioned two stage compression single-screw air compressor, one-level emptying solenoid valve and secondary emptying solenoid valve is provided with between described loaded valve and one stage of compression main frame, described one-level emptying solenoid valve is connected with one-level oil gas separating barrel, a loading solenoid valve is provided with between described one-level emptying solenoid valve and butterfly valve, described loading solenoid valve and cylinders connect, and described secondary emptying solenoid valve is connected with secondary Oil-gas Separation bucket.Load solenoid valve and butterfly valve composition loaded valve, remain the additional force of an enhancing sealing before the air inlet pressure of one stage of compression main frame can be made to reach cracking pressure, ensure the normal air feed of air filter to one stage of compression main frame.
In above-mentioned two stage compression single-screw air compressor, be provided with moisture trap between described one-level Gas Cooler and the suction port of two-stage compression main frame, described moisture trap is provided with automatic drain valve.The gas mixture that one stage of compression main frame is discharged cools through one-level Gas Cooler after the separation of one-level oil gas separating barrel has part, moisture is separated again through moisture trap, and by automatic drain valve, the moisture be separated is discharged, finally be input to the suction port of two-stage compression main frame, this moisture trap can ensure the air oxygen detrition entering two-stage compression main frame, and avoiding affects the compressor oil purity in two-stage compression main frame and lubrication effect.
In above-mentioned two stage compression single-screw air compressor, first class pressure transmitter is provided with between the air outlet of described one-level oil gas separating barrel and one-level Gas Cooler, be provided with one-level minimum pressure valve between the suction port of described moisture trap and two-stage compression main frame, between the air outlet of described secondary Oil-gas Separation bucket and secondary Gas Cooler, be provided with secondary minimum pressure valve and secondary pressure transmitter.Pressure transmitter refers to export the pressure transducer into standard signal, is that one accepts pressure variations, after sensing and transducing, pressure variety is converted to by a certain percentage the instrument of standard output signals.By load cell, measuring circuit and process link three part are made, the gas that load cell can be experienced by it, the physical pressure parameters such as liquid are transformed into the electrical signal of standard, to supply indicator alarm, recorder, the secondary meters such as regulator are measured, instruction and procedure regulation, one-level minimum pressure valve is mainly used in setting up pressure in two-stage SCREW COMPRESSOR, impel the circulation of two-stage compression main frame compressor oil, secondary minimum pressure valve and secondary pressure transmitter with the use of, play one-way exhaust, prevent isolated compression in secondary Oil-gas Separation bucket from flowing backward in secondary Oil-gas Separation bucket and two-stage compression main frame.
In above-mentioned two stage compression single-screw air compressor, described one-level oil gas separating barrel is provided with primary safety valve for inner container, described secondary Oil-gas Separation bucket is provided with secondary safety valve.When the air pressure in Oil-gas Separation bucket exceedes setting value, corresponding safety valve is opened automatically, bleeds off partial air, thus reduces the air pressure in Oil-gas Separation bucket, ensures the Security that Oil-gas Separation bucket uses.
In above-mentioned two stage compression single-screw air compressor, the volume of described one stage of compression main frame is greater than the volume of two-stage compression main frame, the screw axis of described one stage of compression main frame is connected by coupling with the screw axis of two-stage compression main frame, described one stage of compression main frame is connected by one-level connecting cylinder with between motor, is connected between described two-stage compression main frame and one stage of compression main frame by secondary connecting cylinder.Be connect without shaft seal between one stage of compression main frame and 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 stage of compression main frame is by air filter input air, air after the compression of one stage of compression main frame and compressor oil to be mixed formation gas mixture, this gas mixture is entered in one-level oil gas separating barrel by the relief opening of one stage of compression main frame and carries out an Oil-gas Separation, compressor oil after first separation is fed back in one stage of compression main frame through primary oil cooler and one-level oil cut-off valve, pressurized air after first separation enters into after unnecessary moisture is discharged by moisture trap and enters two-stage compression main frame again after the cooling of one-level Gas Cooler, and mix with the compressor oil in two-stage compression main frame and again form gas mixture, this gas mixture is entered in secondary Oil-gas Separation bucket by the relief opening of two-stage compression main frame and carries out secondary oil gas separation, compressor oil after secondary separation is fed back in two-stage compression main frame through secondary oil cooler and secondary oil cut-off valve, pressurized air after secondary separation outwardly exports after the cooling of secondary Gas Cooler, when the oil level indicator on secondary Oil-gas Separation bucket detects the low value of compressor oil pasta lower than systemic presupposition after being separated in secondary Oil-gas Separation bucket, Fill valve is opened, compressor oil in one-level oil gas separating barrel after first separation enters two-stage compression main frame by pressure reduction by one-level oil gas separating barrel, the compressor oil of two-stage compression main frame and secondary Oil-gas Separation bucket is supplemented, when oil level indicator detects that the compressor oil pasta after being separated in secondary Oil-gas Separation bucket reaches the systemic presupposition time higher than the high level of systemic presupposition or Fill valve opening time, Fill valve is closed.
In the technical program, air compresses step by step through one stage of compression main frame and two-stage compression main frame and discharges, oil level indicator detect compressor oil fuel head in secondary Oil-gas Separation bucket to judge whether to need 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 close.The sealing of the single-screw air compressor in the technical program is realized with the pressure difference value of one stage of compression main frame and two-stage compression main frame by a kind of labyrinth seal structure very cleverly and adjustment, one-level oil cut-off valve and secondary oil cut-off valve can ensure that one stage of compression main frame and two-stage compression main frame can lubricate simultaneously, avoid compression main frame to be 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 various types of air compressor structure simultaneously, and Applicable scope is wider; 2, shaftlessly between two stage compression main frame be sealed envelope, and there is a circulating oil path separately, high lubricating effect; 3, by moisture trap, the air of being discharged by one stage of compression main frame is removed moisture, makes the work of this single-screw air compressor more stable, increase the service life; 4, repairing pipe and Fill valve are set, ensure that this single-screw air compressor can long time running and not breaking down.
Accompanying drawing explanation
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.
In figure, 1, two-stage compression main frame; 2, secondary connecting cylinder; 3, one stage of compression main frame; 4, one-level connecting cylinder; 5, carrier gas cylinder is added; 6, vibration damper; 7, solenoid valve is loaded; 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, primary oil filter; 38, secondary 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 one-way valve
Embodiment
Be below 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, two-stage SCREW COMPRESSOR comprises the one stage of compression main frame 3 and two-stage compression main frame 1 that are serially connected without shaft seal structure by labyrinth sealed, one stage of 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 stage of compression main frame 3 by secondary connecting cylinder 2.One-level oil gas separating barrel 16 is provided with primary safety valve for inner container 19, secondary Oil-gas Separation bucket 23 is provided with secondary safety valve 24.
With reference to Fig. 1, Fig. 2 and Fig. 3, one stage of compression main frame 3 is provided with butterfly valve 30 and one-level air inlet tube 29, butterfly valve 30 is provided with one-level emptying solenoid valve 25, secondary emptying solenoid valve 26 and emptying flow modulating valve 59, emptying flow modulating valve 59 for regulating emptying amount, to ensure the sealing of one stage of compression main frame 3.One-level emptying solenoid valve 25 is connected with one-level oil gas separating barrel 16, is also provided with a loading solenoid valve 7 between one-level emptying solenoid valve 25 and butterfly valve 30, and this loading solenoid valve 7 is connected with cylinder 60.Butterfly valve 30 is provided with the one-level return filter 56 be connected with one-level oil gas separating barrel 16.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 with air filter 61, the relief opening of one stage of 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 inlet seat 38 on two-stage compression main frame 1 is connected with one-level Gas Cooler 12 by secondary main frame suction tude 39, secondary return filter 57 is also provided with between the suction port of two-stage compression main frame 1 and two-stage compression main frame 1, secondary main frame suction tude 39 is provided with moisture trap 10, moisture trap 10 is provided with the automatic drain valve 8 isolated moisture can discharged, the air outlet of moisture trap 10 is provided with one-level pressure minimum device 11, 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, the air outlet of secondary Oil-gas Separation bucket 23 is provided with secondary minimum pressure valve 20, secondary Gas Cooler 13 is connected on secondary minimum pressure valve 20 by secondary Gas Cooler suction tude 44, secondary Gas Cooler suction tude 44 is also provided with secondary pressure transmitter 18, the air outlet of secondary Gas Cooler 13 is connected with pressurized air delivery valve 58, 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, this primary oil cooler 34 is also provided with primary oil filter 37, one-level oil cut-off valve 33 is provided with one-level Fuel Cut Solenoid Valve 31, thus compressor oil is looped back transport in one stage of compression main frame 3, above-mentioned is the compressor oil circulating pipeline structure capable of one stage of compression 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, this secondary oil cooler oil outlet tube 46 is also provided with secondary oil strainer 21, secondary oil cut-off valve 36 is provided with secondary Fuel Cut Solenoid Valve 35, thus compressor oil is looped back transport in 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 50 between one-level oil gas separating barrel 16 and the suction port of two-stage compression main frame 1, this secondary main frame repairing pipe 50 is provided with Fill valve 14, the filler opening of this Fill valve 14 is provided with repairing filter 15.
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 stage of compression main frame 3 is by air filter 61 input air, air after one stage of compression main frame 3 compresses and compressor oil to be mixed formation gas mixture, this gas mixture is entered in one-level oil gas separating barrel 16 by the relief opening of one stage of compression main frame 3 and carries out an Oil-gas Separation, compressor oil after first separation is fed back in one stage of compression main frame 3 through primary oil cooler 34 and one-level oil cut-off valve 33, pressurized air after first separation enters into after unnecessary moisture is discharged by moisture trap 10 and enters two-stage compression main frame 1 again after one-level Gas Cooler 12 cools, and mix with the compressor oil in two-stage compression main frame 1 and again form gas mixture, this gas mixture is entered in secondary Oil-gas Separation bucket 23 by the relief opening of two-stage compression main frame 1 and carries out secondary oil gas separation, compressor oil after secondary separation is fed back in two-stage compression main frame 1 through secondary oil cooler 28 and secondary oil cut-off valve 36, pressurized air after secondary separation is outwardly exported by pressurized air delivery valve 58 after secondary Gas Cooler 13 cools, when the oil level indicator 27 on secondary Oil-gas Separation bucket 23 detects the low value of compressor oil pasta lower than systemic presupposition after being separated in secondary Oil-gas Separation bucket 23, Fill valve 14 is opened, compressor oil in one-level oil gas separating barrel 16 after first separation enters two-stage compression main frame 1 by pressure reduction by one-level oil gas separating barrel 16, the compressor oil of two-stage compression main frame 1 and secondary Oil-gas Separation bucket 23 is supplemented, when oil level indicator 27 detects that the compressor oil pasta after being separated in secondary Oil-gas Separation bucket 23 reaches the systemic presupposition time higher than the high level of systemic presupposition or Fill valve 14 opening time, Fill valve 14 is closed.
In the present embodiment, the volume of one stage of compression main frame 3 is greater than the volume of two-stage compression main frame 1, the screw axis of one stage of compression main frame 3 is connected by coupling with the screw axis of two-stage compression main frame 1, and the intracavity inter-connection of the inner chamber of one stage of compression main frame 3 and two-stage compression main frame 1.The present embodiment operationally one-level oil cut-off valve 33 and secondary oil cut-off valve 36 is opened simultaneously or is closed, can ensure that one stage of compression main frame 3 and two-stage compression main frame 1 pressure difference value keep constant, avoid leakage of oil occurring between the two, make one stage of compression main frame 3 and two-stage compression main frame 1 to be lubricated simultaneously and to lower the temperature simultaneously, avoid scaling loss.
Two-stage SCREW COMPRESSOR in the present embodiment is without shaft seal structure, [application number is 201210193035.2 to a patent application formerly submitted at me of this structure, the applying date: on June 12nd, 2012, application publication number is CN102705238A] in be documented, repeat no more herein.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ two-stage compression main frame 1 herein, secondary connecting cylinder 2, one stage of 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, secondary 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, term such as secondary exhaust one-way valve 63 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. a 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) be connected with one-level oil gas separating barrel (16) and one-level Gas Cooler (12), the secondary oil cooler (28) be connected with secondary Oil-gas Separation bucket (23) and secondary Gas Cooler (13), and the one stage of compression main frame (3) to be serially connected without shaft seal and two-stage compression main frame (1), described one stage of compression main frame (3) is provided with one-level oil cut-off valve (33), described two-stage compression main frame (1) is provided with secondary oil cut-off valve (36), described one stage of compression main frame (3) is connected with motor (9), the suction port of described one stage of 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 stage of compression main frame (3), the oil outlet of described one-level oil gas separating barrel (16) is connected with primary oil cooler (34), described one-level oil cut-off valve (33) is connected with primary oil cooler (34), the air outlet of described one-level oil gas separating barrel (16) is connected with one-level Gas Cooler (12), 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), the oil outlet of described secondary Oil-gas Separation bucket (23) is connected with secondary oil cooler (28), described secondary oil cut-off valve (36) is connected with secondary oil cooler (28), the air outlet of described secondary Oil-gas Separation bucket (23) is connected with the secondary Gas Cooler (13) for also being exported by Air flow, secondary main frame repairing pipe (50) is also provided with between described one-level oil gas separating barrel (16) and the suction port of two-stage compression main frame (1), described secondary main frame repairing pipe (50) is provided with Fill valve (14).
2. two stage compression single-screw air compressor according to claim 1, is characterized in that, described secondary Oil-gas Separation bucket (23) is provided with oil level indicator (27).
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 stage of compression main frame (3), described butterfly valve (30) be provided with the one-level return filter (56) be connected with one-level oil gas separating barrel (16).
4. two stage compression single-screw air compressor according to claim 3, it is characterized in that, one-level emptying solenoid valve (25) and secondary emptying solenoid valve (26) is provided with between described butterfly valve (30) and one stage of compression main frame (3), described one-level emptying solenoid valve (25) is connected with one-level oil gas separating barrel (16), a loading solenoid valve (7) is provided with between described one-level emptying solenoid valve (25) and butterfly valve (30), described loading solenoid valve (7) is connected with cylinder (60), 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 moisture trap (10) between described one-level Gas Cooler (12) and the secondary inlet mouth (38) of two-stage compression main frame (1), described moisture trap (10) is provided with automatic drain valve (8).
6. two stage compression single-screw air compressor according to claim 5, it is characterized in that, first class pressure transmitter (17) is provided with between the air outlet of described one-level oil gas separating barrel (16) and one-level Gas Cooler (12), one-level minimum pressure valve (11) is provided with between the suction port of described moisture trap (10) and two-stage compression main frame (1), secondary minimum pressure valve (20) and secondary pressure transmitter (18) is provided with between the secondary air outlet of described secondary Oil-gas Separation bucket (23) and secondary Gas Cooler (13).
7. two stage compression single-screw air compressor according to claim 1, it is characterized in that, described one-level oil gas separating barrel (16) is provided with primary safety valve for inner container (19), described secondary Oil-gas Separation bucket (23) is provided with secondary safety valve (24).
8. the two stage compression single-screw air compressor according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7, it is characterized in that, the volume of described one stage of compression main frame (3) is greater than the volume of two-stage compression main frame (1), the screw axis of described one stage of compression main frame (3) is connected by coupling with the screw axis of two-stage compression main frame (1), described one stage of compression main frame (3) is connected by one-level connecting cylinder (4) with between motor, be connected by secondary connecting cylinder (2) between described two-stage compression main frame (1) and one stage of compression main frame (3).
9. the method for work of a two stage compression single-screw air compressor, it is characterized in that, one stage of compression main frame (3) is by air filter (61) input air, air to be mixed formation gas mixture with compressor oil after one stage of compression main frame (3) compression, this gas mixture is entered in one-level oil gas separating barrel (16) by the relief opening of one stage of compression main frame (3) and carries out an Oil-gas Separation, compressor oil after first separation is fed back in one stage of compression main frame (3) through primary oil cooler (34) and one-level oil cut-off valve (33), pressurized air after first separation enters into after unnecessary moisture is discharged by moisture trap (10) and enters two-stage compression main frame (1) again after one-level Gas Cooler (12) cooling, and mix with the compressor oil in two-stage compression main frame (1) and again form gas mixture, this gas mixture is entered in secondary Oil-gas Separation bucket (23) by the relief opening of two-stage compression main frame (1) and carries out secondary oil gas separation, compressor oil after secondary separation is fed back in two-stage compression main frame (1) through secondary oil cooler (28) and secondary oil cut-off valve (36), pressurized air after secondary separation outwardly exports after secondary Gas Cooler (13) cooling, when the oil level indicator (27) on secondary Oil-gas Separation bucket (23) detects the low value of compressor oil pasta lower than systemic presupposition after being separated in secondary Oil-gas Separation bucket (23), Fill valve (14) is opened, compressor oil after one-level oil gas separating barrel (16) interior first separation enters two-stage compression main frame (1) by pressure reduction by one-level oil gas separating barrel (16), the compressor oil of two-stage compression main frame (1) and secondary Oil-gas Separation bucket (23) is supplemented, when oil level indicator (27) detects that the compressor oil pasta after being separated in secondary Oil-gas Separation bucket (23) reaches the systemic presupposition time higher than the high level of systemic presupposition or Fill valve (14) opening time, 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 |
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