CN1963208A - Low-residual-oil double-screw air compressor - Google Patents
Low-residual-oil double-screw air compressor Download PDFInfo
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- CN1963208A CN1963208A CN 200610154989 CN200610154989A CN1963208A CN 1963208 A CN1963208 A CN 1963208A CN 200610154989 CN200610154989 CN 200610154989 CN 200610154989 A CN200610154989 A CN 200610154989A CN 1963208 A CN1963208 A CN 1963208A
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Abstract
The invention relates to a low oil residual dual screw air compressor. The horizontal and vertical separating tanks of the oil gas tank weld together through a transitional linking pipe, with the vertical separating tank above the vertical one. Inside of the end of the horizontal separating tank facing directly the arc bending exit of the end of the exhaust pipe, the atomized oil gas rotates along the tangential of the horizontal separating tank and the baffle plate within it, throwing the heavier oil drop to the tank wall flowing to the bottom of the tank. Vertical separating tank further separates the oil gas mixture after the horizontal separating tank with an inside oil gas separator or baffle plate impacting the mixture. As the vertical separating tank has bigger cross section than that of the transitional linking pipe and therefore reduces the flowing speed of the mixture and giving the bigger drops another chance to fall into the bottom of the oil tank. Heat conducting process will continue between the oil mixture and the wall of the oil tank within the vertical separating tank and improve separating effect with further cooling and condensing.
Description
Technical field
The present invention relates to a kind of low-residual-oil double-screw air compressor, especially relate to a kind of the isostructural improvement of oil gas jar.
Background technique
The core component of oil spout double-screw air compressor (hereinafter to be referred as the oil spout screw air compressor) is a compressor host, be a kind of in the positive displacement compressor, the compression of air is to reach by the volume-variation that is installed on the negative and positive rotor teeth groove of engagement parallel to each other in the casing.The rotor pair and the casing of its precision-fit in rotate and make the gas between the rotor teeth groove constantly produce periodic volume-variation and,, finish suction, sealing, compression and oil spout, four working procedure of exhaust by pushing discharge side in the suction side along rotor axis.Four working procedure about the compression main frame are described below:
1, breathing process: when rotor rotation, the roller seating space space of major-minor rotor is when going to the inlet end wall opening, its space maximum, this moment, the roller seating space space of rotor communicated with the free air of suction port, because of the air of roller seating space when the exhaust is discharged totally, during the exhaust end, roller seating space is to be in vacuum state, when forwarding suction port to, ambient air promptly is inhaled into, and flows into vertically in the roller seating space of major-minor rotor.When air was full of whole roller seating space, the air inlet side end face of rotor had left the suction port of casing, and the air between roller seating space promptly is closed.
2, closed process: major-minor two rotors are when air-breathing end, and its major-minor rotor tooth summit and casing close envelope, and air closed envelope and no longer outflowed in roller seating space this moment, i.e. closed process.Two rotors are rotated further, and its tooth peak and roller seating space coincide at suction end, and matching surface moves to exhaust end gradually, and air is also carried to exhaust end.
3, compression and injection process: in course of conveying, Surface of action moves to exhaust end gradually, that is reduces gradually between the roller seating space between Surface of action and relief opening, and the gas in the roller seating space is compressed gradually, and pressure improves, and this is a compression process.And compression while screw rod machine oil also mixes with chamber gas because of action of pressure sprays in the pressing chamber.
4, exhaust process: when the engagement end face of rotor forwards (this moment, the pressure of pressurized gas was the highest) when communicating with the casing relief opening to, compressed gas begins to discharge, Surface of action until tooth peak and roller seating space moves to the exhaust end face, this moment, two rotor engaged faces and this roller seating space space of casing relief opening were zero, promptly finish exhaust process, roller seating space length between rotor engaged face and the casing suction port reaches the longest again simultaneously, and its breathing process is carrying out again.
Fig. 1 is the structural representation of oil spout screw air compressor in the prior art, the oil spout screw air compressor by air-strainer 110, air inlet controller 111, compressor host 112, prime mover (motor or internal-combustion engine) 118, oil gas jar 113, deaerator 114, minimum pressure valve 115, cooler 119, oily thermostatic valve 117, and other annexes 116 constitute.
Oil spout screw air compressor gas groundwork flow process is described below: prime mover (motor or internal-combustion engine) 118 work, drive 112 rotations of compression main frame, compression main frame 112 rotation meetings make air be entered by air-strainer 110 going into the certain degree of vacuum of interruption-forming, the air inlet controller 111 of flowing through enters compressor host 112, in compressor host 112, there is a large amount of screw compression machine oil to be sprayed in the compression chamber, air and screw compression machine oil mixing formation gas mixture enter in the oil gas jar 113 in compression main frame 112 compression processes, gas mixture is flowed through in oil gas jar 113 processes, oarse-grained oil droplet can fall into oil gas jar 113 bottoms under air-flow and action of gravity, separate compressor oil by deaerator 114 gas mixture oil gas jar 113 back of flowing through, and pressurized air is discharged through minimum pressure valve 115 backs.The pressurized air of Pai Chuing contains micro-screw compression machine oil like this, so the oil spout screw air compressor can not be directly used in the pressurized air oil content occasion that has certain requirements.
The gas mixture that enters pressurized air the oil gas jar 113 and screw compression machine oil from compression main frame 112 can form eddy current in oil gas jar 113, oil foam etc., the oil gas jar 113 of common oil spout screw air compressor is the container of screw rod machine oil storage and the mechanical separation that guarantees gas mixture on function, if well the mechanical separation of gas mixture is not done optimization on the structural design, even the oil gas jar to design too small gentle liquidus surface height too small, oil content directly enters deaerator 114 than higher pressurized air, increased the work load of deaerator 114, the resid amount of air compressor just may be difficult to control.
Gas mixture liquid phase oil droplet dimensional range after compressed main frame 112 compressions is very wide, most droplet diameter size is 1-50 μ m normally, the small part micro-droplet of oil can be as small as with gas molecule in space has the identical order of magnitude, only be 0.01 μ m, if the gas mixture in the oil gas jar 113 does not pass through sufficient mechanical separation, a large amount of gas mixtures deaerator 114 of flowing through, make deaerator 114 not good probably because of the separating effect that can't bear the heavy load, the resid amount of air compressor will be than higher, and therefore deaerator 114 also may lose efficacy and reduce working life than being easier to.
Well-designed oil gas jar 113 should carry out mechanical separation well to gas mixture, and oil content is more satisfactory below 500ppm in the gas mixture when general control enters deaerator 114, and droplet diameter is below 1 μ m in this moment mixture.
Increase common collision is arranged, the reducing flow velocity, reduce modes such as temperature of the mode of 113 pairs of gas mixture mechanical separation of oil gas jar effect.Bump: tank skin, deflection plate in the gas mixture bump oil gas jar 113, can realize that bigger oil droplet falls into oil gas jar 113 bottoms at air-flow and action of gravity; Along tank skin and the rotation of deflection plate tangent direction, increase the swirling flow of gas in the knockout drum 113 behind gas mixture bump tank skin or the deflection plate, increase oily particulate and be in contact with one another the chance that forms the major diameter oil droplet, be thrown on the tank skin also for centrifugal force of oil droplet.Reduce flow velocity: the pressurized air of discharging from compression main frame 112 relief openings and the mixture flow of compressor oil are through the bigger pipeline of sectional area ratio, because of the runner diffusion, mixture expands suddenly, flow velocity reduces rapidly, makes to condense into oarse-grained oil droplet and have an opportunity to fall into oil gas jar 113 bottoms because of air-flow and action of gravity.Reduce temperature: gas mixture is discharged the back temperature than higher from the compression main frame, generally at 90 ℃-100 ℃, oil gas jar 113 tank skins, compressor wet goods at oil gas jar neutralized stream warp carry out heat exchange, temperature reduces gradually, falls into oil gas jar 113 bottoms thereby make mist of oil condense into bigger oil droplet at air-flow and action of gravity.
Summary of the invention
The objective of the invention is by optimizing the structural design of oil spout screw air compressor, take multiple mechanical separation principle, a kind of oil gas jar that gas mixture in the exhaust end base of oil injection threaded bolt air compressor is carried out various ways, multi-stage separation structure is provided, thereby obtain a kind of low-residual-oil double-screw air compressor, improve the compressed air quality that air compressor is produced, also improved the working life and the reliability of deaerator simultaneously.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals: a kind of low Residual oil oil spout screw air compressor comprises:
The compression main frame that air is compressed;
Prime mover of air compressor (motor or internal-combustion engine);
The air compressor controller of control air compressor;
Air enters before the compression main frame air filter of impurity such as dust in the filtered air;
The air inlet controller of control air compressor air intake amount;
The oil gas jar carries out mechanical separation at this gas mixture, also is the container that the air compressor compressor oil is deposited, and oil level monitor is housed;
The deaerator that Residual oil is separated;
Guarantee that the pneumatics function obtains sufficient lubrication need be kept the minimum system internal pressure with the cooling air compressor minimum pressure valve;
Regulate air compressor screw rod machine oil intensity of cooling, the oily thermostatic valve of system temperature in the control air compressor;
Being used to cool off air compressor compressor oil and compressed-air actuated cooler, can be air-cooled form, also can be the water-cooled form;
Other annexes comprise: cooling blower or water pump; Set air compressor working pressure and pressure reduction, can detect the pressure switch of air compressor Maximum operating pressure and minimum exhaust pressure; Appliance starting dish assembly comprises contactor, hot protective relay, power module, phase sequence relay etc.; Energy saving component vector frequency converter annexes such as (selecting piece installing).
Wherein, described oil gas jar is made of horizontal knockout drum and vertical knockout drum, and vertical knockout drum is welded on the top of horizontal knockout drum by the transition connecting tube, and described deaerator is arranged in the vertical knockout drum; Be horizontally disposed with deflection plate in the horizontal knockout drum of described relatively transition connecting tube opposite side, the top of deflection plate is provided with the outlet pipe of compression main frame.Described deflection plate is arranged on above the horizontal knockout drum center line on the end inwall, and its free end is unsettled in horizontal knockout drum; Described outlet pipe end is provided with an arc elbow, the end inwall of the horizontal knockout drum of outlet port forward of elbow.
Mixing and separation process according to the running hollow G﹠O of low Residual oil oil spout screw air compressor of the present invention are as follows: prime mover (motor or internal-combustion engine) work, drive the rotation of compression main frame, compression main frame rotation meeting makes air be entered by air-strainer going into the certain degree of vacuum of interruption-forming, the air inlet controller of flowing through enters compressor host, in compressor host, there is a large amount of screw compression machine oil to be sprayed in the compression chamber, air and screw compression machine oil mixing formation gas mixture enter in the oil gas jar in the compression main frame compression process, gas mixture is flowed through in the oil gas jar process, oarse-grained oil droplet can fall into the oil gas pot bottom under air-flow and action of gravity, the oil droplet of small-medium size can be by gas mixture bump tank skin or deflection plate in the oil gas jar, changing cross section of fluid channel amasss to reduce flow velocity and increase heat exchange and reduces the gas mixture temperature and reach separating effect, pressurized air is flowed through with the gas mixture of screw compression machine oil and by deaerator compressor oil is separated after oil gas jar multi-stage mechanical separates, and pressurized air is discharged through behind the minimum pressure valve.
The oil gas jar is made of horizontal knockout drum and vertical knockout drum, horizontal knockout drum and vertical knockout drum are weldingly connected by the transition connecting tube, vertical knockout drum is positioned at the top of horizontal knockout drum, and the oil gas jar compresses the main exhaust pipe in addition, respectively passes in and out annexes such as oil pipe and interface, safety valve mounting point, oil level indicator.
The gas mixture that horizontal knockout drum is used for the compression main frame is discharged makes oil droplet drop to the oil gas pot bottom under air-flow and action of gravity by bump tank skin and deflection plate, reduction flow velocity, reduction temperature; In horizontal knockout drum, be provided with deflection plate, increase gas mixture impact machine can and the swirling flow of gas mixture, increase the chance that the oily particulate in the gas mixture condenses, also be thrown on the tank skin and reach separating effect to centrifugal force of oil droplet.Gas mixture is in the process of flowing through of horizontal knockout drum, and runner has a diffusion process, can reduce the flow velocity of gas mixture, and the chance that the oily particulate in the gas mixture is condensed increases and improves separating effect; Gas mixture contacts screw rod machine oil and tank skin in horizontal knockout drum, can suitably reduce self temperature with its generation diabatic process and improve separating effect.
Vertical knockout drum is used for the gas mixture after separating through horizontal knockout drum is further separated, when flowing through the transition connecting tube, gas mixture quickens because of the connecting tube sectional area is little, clash into the deflection plate at built-in deaerator or this place, form swirling flow once more and increase oily particulate touch opportunity and be thrown on the tank skin for centrifugal force of oil droplet, to improve separating effect; After gas mixture entered vertical knockout drum, because of vertical knockout drum is more a lot of greatly than transition connecting tube sectional area, gas mixture reduced flow velocity, made to condense into oarse-grained oil droplet and obtain chance once more and be subjected to air-flow and action of gravity to fall into the oil gas pot bottom; Gas mixture continues in vertical knockout drum and tank skin generation conduction process, lowers the temperature once more and condenses and improve separating effect.
Description of drawings
Fig. 1 is a kind of structural representation of oil spout double-screw air compressor in the prior art;
Fig. 2 is a kind of structural representation of the present invention;
Fig. 3 is a kind of structural representation of oil gas jar of the present invention;
Fig. 4 is according to oil gas mixing of the present invention, separation process and separating effect statistics schematic representation;
Fig. 5 is each regional oil content curve synoptic diagram of oil gas jar of the present invention.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment: in the low Residual oil oil spout screw air compressor of the present invention, optimize the mechanical separation that realizes various ways, multistage mode by in the air compressor resid amount being influenced very large oil gas jar structure, effectively guaranteed entering the control of pressurized air oil content before the deaerator.
Shown in Figure 2, the present invention includes: air enters before the compression main frame air-strainer 210 of impurity such as dust in the filtered air; The air inlet controller 211 of control air compressor air intake amount; Air is carried out compressor for compressing main frame 212; Prime mover of air compressor (motor or internal-combustion engine) 218; Oil gas jar 213, the oil gas that mixes in oil gas jar 213 carries out mechanical separation, also is the container that the air compressor compressor oil is deposited; Deaerator 214 with the Residual oil separation; Guarantee that the pneumatics function obtains sufficient lubrication need be kept the minimum system internal pressure with the cooling air compressor minimum pressure valve 215; Being used to cool off air compressor compressor oil and compressed-air actuated cooler 219, can be air-cooled form, also can be the water-cooled form; Regulate air compressor screw rod machine oil intensity of cooling, the oily thermostatic valve 217 of system temperature in the control air compressor; And other necessary annexes 216.
Key of the present invention is to the various ways of gas mixture and the mechanical separation of multistage mode in oil gas jar 213, in order to describe the details of this separation process, Fig. 3 illustrates the structure of oil gas jar, and oil gas jar 213 is made of horizontal knockout drum 304, transition connecting tube 305 and vertical knockout drum 306 3 parts.Air is compressed in the process in compression main frame 212, for guaranteeing to compress main frame 212 proper functioning and taking away a large amount of heat in compression main frame 212 compression chambers in the pressurized air process, there is a large amount of compressor oils to spray into compression main frame 212, behind compression main frame 212 pressurized air during to 213 exhausts of oil gas jar, air and compressor oil are to mix the formation gas mixture.At 1-50 μ m, the small part micro-droplet of oil can be as small as with gas molecule in space has the identical order of magnitude, only 0.01 μ m from the most of droplet diameter size of the gas mixture that compresses the main frame discharge.
The compressed main exhaust pipe 302 of gas mixture enters in the horizontal knockout drum 304, and there is an elbow compression main exhaust pipe 302 lower ends, and the guiding gas mixture clashes into the tank skin and the deflection plate 303 that is located in the horizontal knockout drum 304 of horizontal knockout drum 304.When gas mixture is discharged from compression main exhaust pipe 302, owing to expand suddenly, cause air-flow to descend, at this moment bigger oil droplet will be because of at the bottom of action of gravity falls into jar, less oil droplet and the mist of oil that is mixed in the pressurized air will be along horizontal knockout drum and the rotations of deflection plate tangential direction, centrifugal action can get rid of heavier oil droplet to tank skin down, and oil droplet flows into a jar end because of action of gravity along tank skin after condensing.This separation process occurs in area I shown in Figure 3, is referred to as the first order and separates.
Gas mixture continues to carry to exhaust end along horizontal knockout drum 304, in gas mixture is flowed through the process of horizontal knockout drum 304, runner further spreads, continue to reduce the flow velocity of mixed gas, the chance that oily particulate in the mixed gas condenses is increased, and the oil droplet that condenses can be because of at the bottom of air-flow and action of gravity fall into jar.Gas mixture contacts screw rod machine oil and tank skin in horizontal knockout drum 304, also can reduce its temperature with its generation diabatic process, thereby makes mist of oil condense into bigger oil droplet at the bottom of air-flow and action of gravity fall into jar.This separation process occurs in area I I shown in Figure 3, is referred to as the second level and separates.
Gas mixture is when flowing through transition connecting tube 305, circulation area reduces, flowing velocity increases to some extent, very fast gas mixture just directly clashes into the bottom of vertical knockout drum 306 built-in deaerators 214 or the deflection plate that should locate, the principle of separating with the first order is the same, and a large amount of oil droplets condenses separated.This separation process occurs in area I II shown in Figure 3, is referred to as the third level and separates.
Gas mixture bump in the vertical knockout drum 306 deaerator 214 or should continue in vertical knockout drum 306, to flow behind the deflection plate at place, in this process, because of vertical knockout drum 306 more a lot of greatly than transition connecting tube 305 sectional areas, gas mixture reduces flow velocity, at the bottom of making the oarse-grained oil droplet that condenses to become obtain chance once more fallen into jar by air-flow and action of gravity, gas mixture continues in vertical knockout drum 306 and tank skin generation conduction process, lowers the temperature once more and condenses and improve separating effect.This separation process occurs in area I V shown in Figure 3, is referred to as the fourth stage and separates.
Shown in Figure 4 is oil gas mixing of the present invention, separation process figure and separating effect statistics, the gas mixture droplet diameter that enters deaerator is below 1 μ m, oil content can control to below the 500ppm, the various ways that the present invention carries out in the oil gas jar, the mechanical separation of multistage mode can separate the screw rod machine oil in the gas mixture fully effectively.
Fig. 5 is each regional oil content curve synoptic diagram of oil gas jar of the present invention.
As mentioned above, the invention describes a kind of by optimizing oil spout screw air compressor structural design, take multiple mechanical separation principle, designed and a kind of gas mixture in the exhaust end base of oil injection threaded bolt air compressor has been carried out oil gas jar structure multi-form, multi-stage separation, thereby obtain a kind of low Residual oil oil spout screw air compressor, make the pressurized air oil content of air compressor production control to more satisfactory level, also improved the working life and the reliability of deaerator simultaneously.
At last, should be pointed out that above embodiment only is the more representational example of the present invention.Obviously, technological scheme of the present invention is not limited to the foregoing description, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (3)
1. a low-residual-oil double-screw air compressor comprises oil gas jar (213), and deaerator (214) is set in the oil gas jar (213), it is characterized in that:
Described oil gas jar (213) is made of horizontal knockout drum (304) and vertical knockout drum (306), vertical knockout drum (306) is welded on the top of horizontal knockout drum (304) by transition connecting tube (305), and described deaerator (214) is arranged in the vertical knockout drum (306);
Be horizontally disposed with deflection plate (303) in the horizontal knockout drum (304) of described relatively transition connecting tube (305) opposite side, the top of deflection plate (303) is provided with the outlet pipe (302) of compression main frame (212).
2. low-residual-oil double-screw air compressor according to claim 1 is characterized in that: described deflection plate (303) is arranged on horizontal knockout drum (304) above the center line on the end inwall, and its free end is unsettled in horizontal knockout drum (304).
3. low-residual-oil double-screw air compressor according to claim 1 is characterized in that: described outlet pipe (302) end is provided with an arc elbow, the end inwall of the horizontal knockout drum of outlet port forward (304) of elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154989 CN1963208A (en) | 2006-12-01 | 2006-12-01 | Low-residual-oil double-screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610154989 CN1963208A (en) | 2006-12-01 | 2006-12-01 | Low-residual-oil double-screw air compressor |
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| CN1963208A true CN1963208A (en) | 2007-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200610154989 Pending CN1963208A (en) | 2006-12-01 | 2006-12-01 | Low-residual-oil double-screw air compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694213B (en) * | 2009-10-23 | 2011-05-18 | 石家庄嘉祥精密机械有限公司 | Embedded oil-gas centrifugal separator and integrated three-stage oil-gas separation screw compressor |
| CN110594136A (en) * | 2019-10-24 | 2019-12-20 | 廖日森 | Heating type oil-water separation system |
-
2006
- 2006-12-01 CN CN 200610154989 patent/CN1963208A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694213B (en) * | 2009-10-23 | 2011-05-18 | 石家庄嘉祥精密机械有限公司 | Embedded oil-gas centrifugal separator and integrated three-stage oil-gas separation screw compressor |
| CN110594136A (en) * | 2019-10-24 | 2019-12-20 | 廖日森 | Heating type oil-water separation system |
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Open date: 20070516 |