CN111561447A - Screw compressor and control method thereof - Google Patents
Screw compressor and control method thereof Download PDFInfo
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- CN111561447A CN111561447A CN202010325846.8A CN202010325846A CN111561447A CN 111561447 A CN111561447 A CN 111561447A CN 202010325846 A CN202010325846 A CN 202010325846A CN 111561447 A CN111561447 A CN 111561447A
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- male rotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- 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
- F04C23/001—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 of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/02—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for several pumps connected in series or in parallel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention provides a screw compressor and a control method thereof, which are applied to the technical field of compressors and control, wherein a cooling device is started firstly, a guide-in pipeline of the cooling device guides cooling liquid into a condensing tank from one end of the condensing tank, and the cooling liquid flows out from the other end of the condensing tank after entering the condensing tank and flows back into the cooling device; after the temperature of the cooling liquid flowing back to the cooling device reaches a certain value, the first valve, the second valve and the third valve are opened, the air inlet is communicated with the first cavity, the first air outlet is communicated with the first diversion trench, and the second air outlet is communicated with the second diversion trench; after the first valve, the second valve and the third valve are opened, the driving device is opened, the first-stage male rotor and the first-stage female rotor, the second-stage male rotor and the second-stage female rotor and the third-stage male rotor and the third-stage female rotor rotate cooperatively, and external air is sucked from the air inlet.
Description
Technical Field
The invention relates to the technical field of compressors and control, in particular to a screw compressor and a control method thereof.
Background
However, under the high-pressure working condition that the exhaust pressure of the two-stage screw compressor is 2.5-4.0 mpa, the suction-exhaust pressure ratio and the pressure difference of the secondary main machine are huge at the moment. Generally, the pressure difference is about 1.5-3.0 Mpa, and the service life of the bearing is greatly shortened to 5000-10000 h due to huge axial force and radial force of gas generated by the secondary screw rotor under the working condition. In addition, the rigidity of the secondary rotor is often insufficient due to large pressure difference, so that the rotor is seriously abraded and deformed after long-time operation, and then a host is damaged and seized;
the two-stage screw main machine two-stage part exhaust end extension shaft on the existing three-stage screw compressor is connected with a three-stage main machine through a central bracket and a coupler, so that the matching length of a three-stage rotor set is longer, the integral structure of the compressor is overlong, the volume of the compressor is larger, the integral operation noise and vibration of the compressor are improved, the parts and the sealing surface of the main machine are increased, the leakage point is increased, the integral instability of the compressor is increased, and the gas compression efficiency is not high;
the existing screw compressor can only be opened or closed, and cannot realize the separation of mixed gas of the screw compressor under the accurate control of a circuit, and production personnel only can add more equipment when needing to obtain gas with quantitative concentration or purity, so that the production cost is greatly increased;
for this reason, it is necessary to provide a screw compressor and a control method thereof to solve the problems of low gas compression efficiency and the inability to separate the mixed gas.
Disclosure of Invention
The invention aims to solve the problems that gas compression efficiency is not high and mixed gas cannot be separated, and provides a screw compressor and a control method thereof.
The invention adopts the following technical means for solving the technical problems:
the invention relates to a screw compressor, which comprises a driving device, a coupler, a transmission rod, a driving gear, a first driven gear, a second driven gear, a third driven gear, a switching driven gear, a first-stage male rotor, a first-stage female rotor, a second-stage male rotor, a second-stage female rotor, a third-stage male rotor, a third-stage female rotor, a circuit board, a first valve, a second valve, a third valve, a shell and a cooling device, wherein a first cavity, a second cavity, a third cavity, a first diversion trench and a second diversion trench are arranged in the shell;
the rotating shaft of the driving device is fixedly connected with one end of the shaft coupler, the other end of the shaft coupler is fixedly connected with one end of the transmission rod, the other end of the transmission rod is fixedly connected with the driving gear, the first driven gear is fixedly connected with the rotating shaft of the first-stage male rotor, the first-stage male rotor and the first-stage female rotor are respectively movably connected with the shell, the first-stage male rotor is meshed with the first-stage female rotor, the first-stage male rotor and the first-stage female rotor are jointly accommodated in the first cavity, the first driven gear protrudes out of the shell, the first driven gear is meshed with the driving gear, the second-stage male rotor and the second-stage female rotor are respectively movably connected with the shell, the second-stage male rotor is meshed with the second-stage female rotor, and the second-stage male rotor and the second-stage female rotor are jointly accommodated in the second, the second driven gear protrudes out of the shell, the second driven gear is meshed with the driving gear, the third-level male rotor and the third-level female rotor are respectively movably connected with the shell, the third-level male rotor is meshed with the third-level female rotor, the third-level male rotor and the third-level female rotor are jointly accommodated in the third cavity, the third driven gear protrudes out of the shell, the switching driven gear is movably connected with the shell, the second driven gear is meshed with the switching driven gear, the switching driven gear is meshed with the third driven gear, the circuit board is respectively electrically connected with the driving device, the first valve, the second valve and the third valve, the rotating shaft of the driving device can drive the coupler to rotate, the rotating shaft of the coupler can drive the driving rod to rotate, and the rotating shaft of the driving rod can drive the driving gear to rotate, the driving gear rotates to drive the first driven gear and the second driven gear to rotate, the first driven gear rotates to drive the first-stage male rotor to rotate, the second driven gear rotates to drive the second-stage male rotor and the switching driven gear to rotate respectively, the switching driven gear rotates to drive the third driven gear to rotate, the third driven gear rotates to drive the third-stage male rotor to rotate, the first valve, the second valve and the third valve are movably connected with the shell, the cooling device is fixedly connected with the shell, the cooling device is electrically connected with the circuit board, and the cooling device can guide cooling liquid into the shell;
the first cavity is communicated with the second cavity through the first diversion trench, and the second cavity is communicated with the third cavity through the second diversion trench.
Further, screw compressor includes the supporting seat, the supporting seat with transfer line swing joint, the supporting seat is located the shaft coupling with between the driving gear.
Furthermore, an air inlet is formed in the shell and communicated with the first cavity, and the first valve can control the air inlet to be opened and closed.
Furthermore, a first air outlet is formed in the shell, the first air outlet is communicated with the first diversion trench, and the second valve can control the opening and closing of the first air outlet.
Furthermore, a second air outlet is formed in the shell, the second air outlet is communicated with the second flow guide groove, and the third valve can control the opening and closing of the second air outlet.
Furthermore, a third air outlet is formed in the shell, and the third air outlet is communicated with the third cavity.
Furthermore, a condensation groove is formed in the shell and penetrates through the shell, and one end of the cooling device is fixedly contained in the condensation groove.
A control method of a screw compressor comprising:
the cooling device is started, the cooling liquid is guided into the condensing tank from one end of the condensing tank by a guide pipeline of the cooling device, and the cooling liquid flows out from the other end of the condensing tank after entering the condensing tank and flows back into the cooling device;
after the temperature of the cooling liquid flowing back to the cooling device reaches a certain value, the first valve, the second valve and the third valve are opened, the air inlet is communicated with the first cavity, the first air outlet is communicated with the first diversion trench, and the second air outlet is communicated with the second diversion trench;
after the first valve, the second valve and the third valve are opened, the driving device is opened, the first-stage male rotor and the first-stage female rotor, the second-stage male rotor and the second-stage female rotor and the third-stage male rotor and the third-stage female rotor rotate cooperatively, and external air is sucked from the air inlet.
Further, the step of sucking the external air into the air inlet is followed by:
the third valve is closed, and sucked gas respectively flows out of the first gas outlet and the third gas outlet.
Further, the step of sucking the external air into the air inlet is followed by:
the second valve is closed, and the sucked gas respectively flows out of the second gas outlet and the third gas outlet.
The invention provides a separant spraying device, which has the following beneficial effects:
the invention relates to a screw compressor, which comprises a driving device, a coupler, a transmission rod, a driving gear, a first driven gear, a second driven gear, a third driven gear, a switching driven gear, a first-stage male rotor, a first-stage female rotor, a second-stage male rotor, a second-stage female rotor, a third-stage male rotor, a third-stage female rotor, a circuit board, a first valve, a second valve, a third valve, a shell and a cooling device, wherein a first cavity, a second cavity, a third cavity, a first diversion trench and a second diversion trench are arranged in the shell;
a control method of a screw compressor comprising:
the cooling device is started, the cooling liquid is guided into the condensing tank from one end of the condensing tank by the guide pipeline of the cooling device, and the cooling liquid flows out of the outflow pipeline from the other end of the condensing tank after entering the condensing tank and flows back into the cooling device; after the temperature of the cooling liquid flowing back to the cooling device reaches a certain value, the first valve, the second valve and the third valve are opened, the air inlet is communicated with the first cavity, the first air outlet is communicated with the first diversion trench, and the second air outlet is communicated with the second diversion trench; after the first valve, the second valve and the third valve are opened, the driving device is opened, the first-stage male rotor and the first-stage female rotor, the second-stage male rotor and the second-stage female rotor and the third-stage male rotor and the third-stage female rotor cooperatively rotate, and external air is sucked from the air inlet;
the screw compressor can separate different gases under the action of the cooling device, so that the different gases can respectively flow into specific positions after entering the screw compressor, and the branched gases are more convenient for later use by users.
Drawings
FIG. 1 is a cross-sectional view of a screw compressor and a method of controlling the same according to the present invention;
FIG. 2 is a perspective view of a screw compressor in one direction according to the present invention and a method for controlling the same;
FIG. 3 is a perspective view of another direction of the screw compressor and the method for controlling the same according to the present invention;
FIG. 4 is a front view of a screw compressor and a method of controlling the same according to the present invention;
FIG. 5 is a schematic flow chart of a control method of the screw compressor and the control method thereof according to the present invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is to be understood that the terms "comprises," "comprising," and "having" and any variations thereof in the description and claims of the invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. In the claims, the description and the drawings of the present application, relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity/action/object from another entity/action/object without necessarily requiring or implying any actual such relationship or order between such entities/actions/objects.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
Referring to fig. 1, the present invention is a screw compressor, including a driving device 1, a coupling 2, a transmission rod 3, a driving gear 4, a first driven gear 5, a second driven gear 6, a third driven gear 7, a transfer driven gear 8, a first-stage male rotor 9, a first-stage female rotor 10, a second-stage male rotor 11, a second-stage female rotor 12, a third-stage male rotor 13, a third-stage female rotor 14, a circuit board 15, a first valve 16, a second valve 17, a third valve 18, a housing 19 and a cooling device 20, wherein a first cavity 191, a second cavity 192, a third cavity 193, a first guiding groove 194 and a second guiding groove 195 are arranged in the housing 19; the rotating shaft of the driving device 1 is fixedly connected with one end of the shaft coupler 2, the other end of the shaft coupler 2 is fixedly connected with one end of the transmission rod 3, the other end of the transmission rod 3 is fixedly connected with the driving gear 4, the first driven gear 5 is fixedly connected with the rotating shaft of the first-stage male rotor 9, the first-stage male rotor 9 and the first-stage female rotor 10 are respectively movably connected with the shell 19, the first-stage male rotor 9 is meshed with the first-stage female rotor 10, the first-stage male rotor 9 and the first-stage female rotor 10 are jointly accommodated in the first cavity 191, the first driven gear 5 protrudes out of the shell 19, the first driven gear 5 is meshed with the driving gear 4, the second-stage male rotor 11 and the second-stage female rotor 12 are respectively movably connected with the shell 19, the second-stage male rotor 11 is meshed with the second-stage female rotor 12, the second-stage male rotor 11 and the second-stage female rotor 12 are jointly, the three-stage male rotor 13 and the three-stage female rotor 14 are respectively movably connected with a shell 19, the three-stage male rotor 13 is meshed with the three-stage female rotor 14, the three-stage male rotor 13 and the three-stage female rotor 14 are jointly accommodated in a third cavity 193, a third driven gear 7 protrudes out of the shell 19, a switching driven gear 8 is movably connected with the shell 19, a second driven gear 6 is meshed with the switching driven gear 8, the switching driven gear 8 is meshed with the third driven gear 7, a circuit board 15 is respectively and electrically connected with a driving device 1, a first valve 16, a second valve 17 and a third valve 18, a rotating shaft of the driving device 1 can drive a coupler 2 to rotate, the coupler 2 can drive a driving rod 3 to rotate, the driving rod 3 can drive a driving gear 4 to rotate, the driving gear 4 can drive a first driven gear 5 and a second driven gear 6 to rotate, the first driven gear 5 can drive a first-stage male rotor 9 to, the second driven gear 6 can rotate to respectively drive the second-stage male rotor 11 and the switching driven gear 8 to rotate, the switching driven gear 8 can rotate to drive the third driven gear 7 to rotate, the third driven gear 7 can rotate to drive the third-stage male rotor 13 to rotate, the first valve 16, the second valve 17 and the third valve 18 are movably connected with the shell 19, the cooling device 20 is fixedly connected with the shell 19, the cooling device 20 is electrically connected with the circuit board 15, and the cooling device 20 can guide cooling liquid into the shell 19; the first cavity 191 is communicated with the second cavity 192 through a first guide groove 194, and the second cavity 192 is communicated with the third cavity 193 through a second guide groove 195; further, the screw compressor comprises a supporting seat 21, the supporting seat 21 is movably connected with the transmission rod 3, and the supporting seat 21 is positioned between the coupler 2 and the driving gear 4; an air inlet 196 is arranged on the shell 19, the air inlet 196 is communicated with the first cavity 191, and the first valve 16 can control the opening and closing of the air inlet 196; a first air outlet 197 is arranged on the housing 19, the first air outlet 197 is communicated with the first diversion trench 194, and the second valve 17 can control the opening and closing of the first air outlet 197; a second air outlet 198 is arranged on the shell 19, the second air outlet 198 is communicated with the second diversion trench 195, and the third valve 18 can control the opening and closing of the second air outlet 198; a third air outlet 199 is arranged on the shell 19, and the third air outlet 199 is communicated with the third cavity 193; a condensation groove 1910 is provided in the housing 19, the condensation groove 1910 penetrates the housing 19, and one end of the cooling device 20 is fixedly housed in the condensation groove 1910.
In the present embodiment:
the driving device 1 is a main driving motor and is used for driving and driving the screw compressor to operate;
the coupling 2 is used for transferring a rotating shaft of the driving device 1 to the transmission rod 3;
the transmission rod 3 is used for transmitting the power of the driving device 1;
the driving gear 4 is used for being meshed with the first driven gear 5 and the second driven gear 6 and transmitting the power of the driving device 1 to the first driven gear 5 and the second driven gear 6;
the first driven gear 5 is used for driving the first-stage male rotor 9 to rotate;
the second driven gear 6 is used for driving the second-stage male rotor 11 to rotate;
the switching driven gear 8 is used for being meshed with the second driven gear 6 and the third driven gear 7 and transmitting power from the second driven gear 6 to the third driven gear 7;
the first-stage male rotor 9 is used for being meshed with the first-stage female rotor 10, the first-stage female rotor 10 is driven to rotate by rotation of the first-stage male rotor, air can be brought into the first-stage male rotor from one end through a space formed by threads in the first-stage male rotor and the first-stage female rotor 10, and the air can be brought out from the other end through rotation of the first-stage male rotor;
the secondary male rotor 11 is used for being meshed with the secondary female rotor 12, the secondary female rotor 12 is driven to rotate by rotation of the secondary male rotor, air can be brought into the secondary male rotor from two ends through a space formed by threads in the secondary male rotor 11 and the threads in the secondary female rotor 12, and the air can be brought out from the other two ends through rotation of the secondary male rotor;
the third-stage male rotor 13 is used for being meshed with the third-stage female rotor 14, the third-stage female rotor 14 is driven to rotate by rotation of the third-stage male rotor, gas can be brought into the third-stage male rotor from three ends through a space formed by threads in the third-stage male rotor and the third-stage female rotor 14, and the gas is brought out from the other three ends through rotation of the third-stage male rotor;
the circuit board 15 is used for controlling the operation of the driving device 1, the first valve 16, the second valve 17, the third valve 18 and the cooling device 20;
the first valve 16 is used to control the opening and closing of the intake 196;
the second valve 17 is used for controlling the opening and closing of the first air outlet 197;
the third valve 18 is used for controlling the opening and closing of the second air outlet 198;
the housing 19 is used to provide protection for the internal components;
the cooling device 20 is used for cooling the screw compressor;
the supporting seat 21 is used for supporting the transmission rod 3;
specifically, the driving device 1 transmits the rotating power to the transmission rod 3 through the coupler 2, and the transmission rod 3 and the driving gear 4 are fixed in the axial center, so that the driving gear 4 can transmit the power of the driving device 1 to transmit the power to the first-stage male rotor 9 and the first-stage female rotor 10, the second-stage male rotor 11 and the second-stage female rotor 12, and the third-stage male rotor 13 and the third-stage female rotor 14 respectively;
the first-stage male rotor 9 and the first-stage female rotor 10 are meshed with each other in the first cavity 191 to rotate, and when the first-stage male rotor 9 and the first-stage female rotor 10 rotate, threads on the first-stage male rotor 9 and the first-stage female rotor 10 are close to each other, so that the space inside the threads is extruded forwards, and gas is pushed to the other end from one end of the combination of the first-stage male rotor 9 and the first-stage female rotor 10, so that the effect of compressing and pushing the gas is;
when the mixed gas flows out from the first cavity 191, the mixed gas flows into the first flow guide groove 194, the cooling liquid in the condensation groove 1910 can cool the mixed gas in the first flow guide groove 194, part of the cooled gas sinks to the lower part, the gas below the cooled gas flows out from the first gas outlet 197, the mixed gas which is not affected by the cooling of the condensation groove 1910 continues to flow into the second cavity 192 from the first flow guide groove 194, the secondary male rotor 11 and the secondary female rotor 12 are meshed and rotate in the second cavity 192, when the mixed gas rotates, the threads on the secondary male rotor 11 and the threads on the secondary female rotor 12 are close to each other, the space inside the threads is extruded forward, the mixed gas is pushed to the other end from one end of the combination of the secondary male rotor 11 and the secondary female rotor 12, and the mixed gas flows into the second flow guide groove 195 from the second cavity 192;
when the mixed gas flows out from the second cavity 192, the mixed gas flows into the second guide groove 195, the cooling liquid in the condensation groove 1910 can cool the mixed gas in the second guide groove 195, part of the gas sinks to the lower part after cooling, the gas below flows out from the second gas outlet 198, the mixed gas which is not affected by the cooling of the condensation groove 1910 continues to flow into the third cavity 193 from the second guide groove 195, at the moment, the third-stage male rotor 13 and the third-stage female rotor 14 are meshed and rotate in the third cavity 193, threads on the third-stage male rotor 13 and threads on the third-stage female rotor 14 are close to each other during rotation, so that the space inside the threads is extruded forward, the mixed gas is pushed to the other end from one end of the combination of the third-stage male rotor 13 and the third-stage female rotor 14, and the mixed gas flows out of the third gas outlet 199 from the third cavity 193;
to sum up, this helical-lobe compressor can make the mist shunt into specific position after getting into helical-lobe compressor, and the gas that is shunted then makes things convenient for the use in user of service later stage more.
A control method of a screw compressor comprising:
s1, opening the cooling device 20, leading the cooling liquid into the condensing groove 1910 from one end of the condensing groove 1910 by the leading-in pipeline of the cooling device 20, leading the cooling liquid into the condensing groove 1910, then flowing out from the other end of the condensing groove 1910, and returning the cooling liquid into the cooling device 20;
s2, after the temperature of the coolant flowing back to the cooling device 20 reaches a certain value, the first valve 16, the second valve 17 and the third valve 18 are opened, the air inlet 196 is communicated with the first cavity 191, the first air outlet 197 is communicated with the first guiding gutter 194, and the second air outlet 198 is communicated with the second guiding gutter 195;
s3, after the first valve 16, the second valve 17 and the third valve 18 are opened, the driving device 1 is opened, and the first male rotor 9 and the first female rotor 10, the second male rotor 11 and the second female rotor 12, and the third male rotor 13 and the third female rotor 14 rotate in cooperation to suck the external air from the air inlet 196.
In one embodiment, the step of drawing ambient air into the inlet 196 is followed by the steps of:
the third valve 18 is closed and the drawn gas exits the first and third outlets 197 and 199, respectively.
In one embodiment, the step of drawing ambient air into the inlet 196 is followed by the steps of:
the second valve 17 is closed and the inhaled gas exits the second and third outlets 198 and 199, respectively.
In summary, when cooling apparatus 20 is opened, the introduction pipe of cooling apparatus 20 introduces the cooling liquid into condensation tank 1910 from one end of condensation tank 1910, and the cooling liquid flows out of the other end of condensation tank 1910 after entering condensation tank 1910 and flows back into cooling apparatus 20; after the temperature of the coolant flowing back to the cooling device 20 reaches a certain value, the first valve 16, the second valve 17 and the third valve 18 are opened, the air inlet 196 is communicated with the first cavity 191, the first air outlet 197 is communicated with the first diversion trench 194, and the second air outlet 198 is communicated with the second diversion trench 195; after the first valve 16, the second valve 17 and the third valve 18 are opened, the driving device 1 is opened, the first-stage male rotor 9 and the first-stage female rotor 10, the second-stage male rotor 11 and the second-stage female rotor 12, and the third-stage male rotor 13 and the third-stage female rotor 14 rotate in a coordinated manner, and external air is sucked from the air inlet 196; the third valve 18 is closed and the inhaled gas flows out of the first outlet port 197 and the third outlet port 199, respectively; the second valve 17 is closed, and the sucked gas flows out of the second air outlet 198 and the third air outlet 199 respectively; the problem that the efficiency of the gas compression is not high and the mixed gas can not be separated is solved jointly by the control of the circuit board 15 for the screw compressor and the cooling device 20, the mixed gas can be separated under the combined action of the screw compressor and the cooling device 20, different kinds of gas can be respectively flowed into specific positions after entering the screw compressor, and the gas which is shunted is more convenient for the use of the later stage of a user.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A screw compressor is characterized by comprising a driving device, a coupler, a transmission rod, a driving gear, a first driven gear, a second driven gear, a third driven gear, a switching driven gear, a first-stage male rotor, a first-stage female rotor, a second-stage male rotor, a second-stage female rotor, a third-stage male rotor, a third-stage female rotor, a circuit board, a first valve, a second valve, a third valve, a shell and a cooling device, wherein a first cavity, a second cavity, a third cavity, a first diversion trench and a second diversion trench are arranged in the shell;
the rotating shaft of the driving device is fixedly connected with one end of the shaft coupler, the other end of the shaft coupler is fixedly connected with one end of the transmission rod, the other end of the transmission rod is fixedly connected with the driving gear, the first driven gear is fixedly connected with the rotating shaft of the first-stage male rotor, the first-stage male rotor and the first-stage female rotor are respectively movably connected with the shell, the first-stage male rotor is meshed with the first-stage female rotor, the first-stage male rotor and the first-stage female rotor are jointly accommodated in the first cavity, the first driven gear protrudes out of the shell, the first driven gear is meshed with the driving gear, the second-stage male rotor and the second-stage female rotor are respectively movably connected with the shell, the second-stage male rotor is meshed with the second-stage female rotor, and the second-stage male rotor and the second-stage female rotor are jointly accommodated in the second, the second driven gear protrudes out of the shell, the second driven gear is meshed with the driving gear, the third-level male rotor and the third-level female rotor are respectively movably connected with the shell, the third-level male rotor is meshed with the third-level female rotor, the third-level male rotor and the third-level female rotor are jointly accommodated in the third cavity, the third driven gear protrudes out of the shell, the switching driven gear is movably connected with the shell, the second driven gear is meshed with the switching driven gear, the switching driven gear is meshed with the third driven gear, the circuit board is respectively electrically connected with the driving device, the first valve, the second valve and the third valve, the rotating shaft of the driving device can drive the coupler to rotate, the rotating shaft of the coupler can drive the driving rod to rotate, and the rotating shaft of the driving rod can drive the driving gear to rotate, the driving gear rotates to drive the first driven gear and the second driven gear to rotate, the first driven gear rotates to drive the first-stage male rotor to rotate, the second driven gear rotates to drive the second-stage male rotor and the switching driven gear to rotate respectively, the switching driven gear rotates to drive the third driven gear to rotate, the third driven gear rotates to drive the third-stage male rotor to rotate, the first valve, the second valve and the third valve are movably connected with the shell, the cooling device is fixedly connected with the shell, the cooling device is electrically connected with the circuit board, and the cooling device can guide cooling liquid into the shell;
the first cavity is communicated with the second cavity through the first diversion trench, and the second cavity is communicated with the third cavity through the second diversion trench.
2. The screw compressor of claim 1, comprising a support base, wherein the support base is movably connected to the drive rod, and wherein the support base is located between the coupler and the drive gear.
3. The screw compressor of claim 1, wherein the housing is provided with an air inlet, the air inlet is communicated with the first cavity, and the first valve can control the opening and closing of the air inlet.
4. The screw compressor according to claim 1, wherein the housing has a first air outlet, the first air outlet is communicated with the first guiding groove, and the second valve can control the opening and closing of the first air outlet.
5. The screw compressor of claim 1, wherein a second air outlet is disposed on the housing, the second air outlet is communicated with the second guiding groove, and the third valve can control the opening and closing of the second air outlet.
6. The screw compressor of claim 1, wherein a third air outlet is provided in the housing, the third air outlet communicating with the third chamber.
7. The screw compressor according to claim 1, wherein a condensation tank is provided on the housing, the condensation tank penetrates the housing, and one end of the cooling device is fixedly accommodated in the condensation tank.
8. A control method of a screw compressor, characterized by comprising:
the cooling device is started, the cooling liquid is guided into the condensing tank from one end of the condensing tank by a guide pipeline of the cooling device, and the cooling liquid flows out from the other end of the condensing tank after entering the condensing tank and flows back into the cooling device;
after the temperature of the cooling liquid flowing back to the cooling device reaches a certain value, the first valve, the second valve and the third valve are opened, the air inlet is communicated with the first cavity, the first air outlet is communicated with the first diversion trench, and the second air outlet is communicated with the second diversion trench;
after the first valve, the second valve and the third valve are opened, the driving device is opened, the first-stage male rotor and the first-stage female rotor, the second-stage male rotor and the second-stage female rotor and the third-stage male rotor and the third-stage female rotor rotate cooperatively, and external air is sucked from the air inlet.
9. The method of controlling a screw compressor according to claim 8, wherein the step of sucking the outside air into the intake port is followed by:
the third valve is closed, and sucked gas respectively flows out of the first gas outlet and the third gas outlet.
10. The method of controlling a screw compressor according to claim 8, wherein the step of sucking the outside air into the intake port is followed by:
the second valve is closed, and the sucked gas respectively flows out of the second gas outlet and the third gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010325846.8A CN111561447A (en) | 2020-04-23 | 2020-04-23 | Screw compressor and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010325846.8A CN111561447A (en) | 2020-04-23 | 2020-04-23 | Screw compressor and control method thereof |
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| CN111561447A true CN111561447A (en) | 2020-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010325846.8A Withdrawn CN111561447A (en) | 2020-04-23 | 2020-04-23 | Screw compressor and control method thereof |
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| JPS5447113A (en) * | 1977-09-21 | 1979-04-13 | Hitachi Ltd | Screw fluid machine |
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| CN108644117A (en) * | 2018-07-25 | 2018-10-12 | 宁波鲍斯能源装备股份有限公司 | A kind of three-level screw drive structure and its helical-lobe compressor |
| CN109139456A (en) * | 2018-09-20 | 2019-01-04 | 宁波鲍斯能源装备股份有限公司 | A kind of twin-stage water spray screw host |
| JP2019065707A (en) * | 2017-09-28 | 2019-04-25 | 北越工業株式会社 | Hydraulic screw compressor |
| CN110770444A (en) * | 2017-06-17 | 2020-02-07 | 莱宝有限公司 | Multi-stage rotary piston pump |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5447113A (en) * | 1977-09-21 | 1979-04-13 | Hitachi Ltd | Screw fluid machine |
| CN206017140U (en) * | 2016-07-12 | 2017-03-15 | 上海伊莱茨真空技术有限公司 | A kind of three-level Roots water ring intelligent frequency-conversion controls vacuum system |
| CN110770444A (en) * | 2017-06-17 | 2020-02-07 | 莱宝有限公司 | Multi-stage rotary piston pump |
| JP2019065707A (en) * | 2017-09-28 | 2019-04-25 | 北越工業株式会社 | Hydraulic screw compressor |
| CN108150418A (en) * | 2018-03-14 | 2018-06-12 | 杭州久益机械股份有限公司 | A kind of two-stage screw compressor and compression method |
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Application publication date: 20200821 |