CN201826898U - Double-screw expansion machine - Google Patents
Double-screw expansion machine Download PDFInfo
- Publication number
- CN201826898U CN201826898U CN2010205815909U CN201020581590U CN201826898U CN 201826898 U CN201826898 U CN 201826898U CN 2010205815909 U CN2010205815909 U CN 2010205815909U CN 201020581590 U CN201020581590 U CN 201020581590U CN 201826898 U CN201826898 U CN 201826898U
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- gearwheel
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Abstract
The utility model relates to a double-screw expansion machine, which is a power machine used for recovering and utilizing the industrial waste heat and belongs to a power device applying work by utilizing thermal fluid. The double-screw expansion machine comprises a cylinder, wherein one end of the cylinder is provided with a gear box; the cylinder is internally provided with a female rotor and a male rotor which are engaged; and the gear box is internally provided with a gearwheel and a pinion wheel which are engaged. The double-screw expansion machine is characterized in that shafts of the female rotor and the male rotor pass through the cylinder and enter the gear box; the pinion wheel is connected with the shaft of the male rotor through keys; the gearwheel is installed on the shaft of the female rotor; and the gearwheel and the female rotor are in conical match. The double-screw expansion machine has the advantages of compact structure, stable performance and high working efficiency, is convenient for installation and adjustment, has low requirement on a working medium parameter and quality, can be suitable for vapor-liquid two-phase liquid, saturated vapor and unsaturated vapor and whole liquid medium, and has efficient utilization rate of industrial waste heat liquid and waste heat gas.
Description
Technical field
The utility model relates to a kind of twin-screw expander, is the dynamic power machine that is used to reclaim and utilize industrial exhaust heat, belongs to the power plant that utilize the hot fluid acting.
Background technique
Existing be power source with the hot fluid medium dynamic power machine be mainly turbo-expander, turbo-expander is that transformation of energy is carried out in the variation of speed when utilizing working medium to flow, working medium expands in the flow passage component of turbo-expander and obtains kinetic energy, and the active wheel output work is arranged.Conventional turbo-expander has strict restriction to the inlet condition of medium, when the drop that contains in air inlet and the drop that produces in inflation process surpass some, will have a strong impact on the life-span and the efficient of turbo-expander.In addition, if when in medium, containing solid particle such as dust, catalyzer, then can produce serious wearing and tearing to the blade of turbo-expander.
And be provided with a pair of intermeshing the moon in the twin-screw expander cylinder, the male screw rotor, the screw rod two ends are provided with bearing, Bearing Installation is on the bearing support of cylinder block, high-temperature high-pressure medium enters in the twin-screw expander cloudy by suction port, the between cog volume that male screw rotor and cylinder wall form, the rotation of promotion rotor, along with media expansion, the between cog volume constantly enlarges, final medium is discharged by relief opening, twin-screw expander volume type machinery, and by cloudy, the clearance seal of male screw rotor, so when containing drop and dust in the air inlet, still can work efficiently, even its import medium can be a liquid fully, not only can be used as the two phase flow decompressor, can also use as total flow expander.Because twin-screw expander its unique mechanical feature and working principle, has very high utilization ratio for used heat liquid, the waste hot gas of industrial discharge.
Twin-screw expander the moon, seal clearance between the male screw rotor is to the efficient and the performance decisive role of decompressor, cloudy, seal clearance between the male screw rotor depends on the back lash of synchromesh gear, the gearwheel of existing twin-screw expander is adjustable gear, small gear is non-adjustable gear, they are installed in the moon respectively by key, on the male rotor, gearwheel is by bull gear, little gear ring and wheel hub are formed, the size gear ring all is enclosed within on the wheel hub, the size gear ring all can rotate relative to wheel hub, adjust seal clearance between the negative and positive rotor by the position of rotating the relative wheel hub of bull gear, adjust the gap between the big small gear of little gear ring adjustment then, after the adjustment of various gaps is suitable, with straight pin and bolt size gear ring and wheel hub.The complex structure of this adjustable gear, processing difficulties is installed and is adjusted inconvenience, and the gear that is in operation is easy to generate broken teeth.
The model utility content
The purpose of this utility model is: a kind of twin-screw expander is provided, it is not high to working medium parameter and quality requirements, go for vapour-liquid two-phase liquid, saturated vapour and supersaturated steam,, industrial waste heat liquid, waste hot gas are had utilization ratio efficiently also applicable to full liquid medium.
The utility model is achieved by the following technical solution:
It is a kind of twin-screw expander, comprise cylinder, one end of cylinder is provided with gear-box, be provided with the female rotor and the male rotor of engagement in the cylinder, be provided with the gearwheel and the small gear of engagement in the gear-box, it is characterized in that the axle of described female rotor and male rotor passes cylinder and enters in the gear-box, small gear spool is connected by key and male rotor, gearwheel is installed on the axle of female rotor, cooperates for awl between gearwheel and the female rotor.
As a preferred version of the present utility model: gearwheel, small gear all adopt cylindric spiral gear, and its profile of tooth is an involute.
As a preferred version of the present utility model: gearwheel is that left-handed, small gear is dextrorotation.
As a preferred version of the present utility model: the axle head of female rotor and male rotor is equipped with stopping device.
As a preferred version of the present utility model: stopping device is round nut or hexagon nut or shaft end ring.
The utility model synchromesh gear (gearwheel, small gear) adopts can not mode, small gear is connected with the axle of male rotor by key, gearwheel cooperates with the axle of female rotor by awl and is connected, and adjusts back lash between female rotor, the male rotor by a relative displacement of gearwheel and female rotor.After adjusting the gap between the large and small gear, the retainer nut who tightens axle head gets final product.
Large and small gear of the present utility model is selected the cylinder angular gear for use, and its profile of tooth is an involute.Medium enters between cog volume in the cylinder by suction port, media expansion promotes the rotor rotation, medium acts on axial force is arranged on the rotor simultaneously, direction is to point to exhaust end by inlet end, this axial force is born by the exhaust end bearing, in order to reduce the thrust load that the exhaust end bearing is born, must make synchromesh gear balance epitrochanterian section axial power, so small gear is designed to left-handed, gearwheel is designed to dextrorotation.
The synchromesh gear of double-screw compressor is a high gear, and the rotating speed of small gear is higher than gearwheel, and after operation a period of time, wearing and tearing appear in gear teeth face, cause backlash to increase, and small gear is more serious than gearwheel tooth surface abrasion.In order to prolong service life of gear, improve Hardness on Gear Teeth Surface, and small gear Hardness Design value can make like this life-span of big or small gear approaching than gearwheel Hardness Design value height 30HBS at least.In order to prevent to glue together between the gear pair, big small gear is preferably selected the material of the different trades mark.
The utlity model has that compact structure, stable performance, installation are easy to adjust, the advantage of high working efficiency.The utility model is not high to working medium parameter and quality requirements, goes for vapour-liquid two-phase liquid, saturated vapour and supersaturated steam, applicable to full liquid medium yet.Industrial waste heat liquid, waste hot gas had utilization ratio efficiently
Description of drawings
Accompanying drawing is a structural representation of the present utility model;
As shown in the figure: 1 female rotor, 2 cylinders, 3 bearings, 4 gearwheels, 5 lock washers, 6 round nuts, 7 round nuts, 8 lock washers, 9 small gears, 10 keys, 11 bearings, 12 male rotors.
Embodiment
As shown in drawings, be provided with a pair of intermeshing female rotor 1 and male rotor 12 in the cylinder 12, female rotor 1 and male rotor 12 are installed in the bearing support of cylinder 2 by bearing 3,11 respectively, on cylinder 2 tops, the rotor right-hand member is provided with gas-entered passageway and induction port, cylinder 2 bottoms, rotor left end are provided with exhaust passage and vent ports (not shown).Be respectively equipped with gearwheel 4, small gear 9 on air inlet side yin, yang rotor 1,12 projecting shafts, small gear 9 is installed on male rotor 12 projecting shafts by key 10, and is fixing with lock washer 8 and round nut 7 then; Gearwheel 4 is installed on female rotor 1 projecting shaft by the awl cooperation, and is fixing with lock washer 5 and round nut 6 then.
During installation, adjust yin, yang rotor inter-lobe clearance with jiggering earlier, small gear 9 is installed then, gearwheel 4 is installed again, adjust the synchromesh gear back lash, after adjust in each gap, tighten axle head round nut 6,7.
Gearwheel 4, small gear 9 are designed to the cylinder angular gear, and its profile of tooth is an involute.Medium acts on epitrochanterian axial force direction for pointing to exhaust end by inlet end, acts on epitrochanterian axial force in order to reduce medium, small gear 9 is designed to left-handed, and gearwheel 4 is designed to dextrorotation.
The material of two gears is all selected 20CrMnTi for use, and small gear 9 tooth face hardnesses are HRC56～62, and gearwheel 4 tooth face hardnesses are HBS300～330.
The utility model is not limited to above embodiment, can adopt shaft end ring or hexagon nut to replace as round nut.
Claims (5)
1. twin-screw expander, comprise cylinder, one end of cylinder is provided with gear-box, be provided with the female rotor and the male rotor of engagement in the cylinder, be provided with the gearwheel and the small gear of engagement in the gear-box, it is characterized in that the axle of described female rotor and male rotor passes cylinder and enters in the gear-box, small gear spool is connected by key and male rotor, gearwheel is installed on the axle of female rotor, cooperates for awl between gearwheel and the female rotor.
2. twin-screw expander according to claim 1 is characterized in that gearwheel, small gear all adopt cylindric spiral gear, and its profile of tooth is an involute.
3. twin-screw expander according to claim 2 is characterized in that gearwheel is that left-handed, small gear is dextrorotation.
4. twin-screw expander according to claim 1 is characterized in that the axle head of female rotor and male rotor is equipped with stopping device.
5. twin-screw expander according to claim 4 is characterized in that stopping device is round nut or hexagon nut or shaft end ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205815909U CN201826898U (en) | 2010-10-29 | 2010-10-29 | Double-screw expansion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205815909U CN201826898U (en) | 2010-10-29 | 2010-10-29 | Double-screw expansion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826898U true CN201826898U (en) | 2011-05-11 |
Family
ID=43965440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205815909U Expired - Fee Related CN201826898U (en) | 2010-10-29 | 2010-10-29 | Double-screw expansion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201826898U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195481A (en) * | 2013-03-25 | 2013-07-10 | 上海维尔泰克螺杆机械有限公司 | Screw expanding power generation device and organic Rankine cycle power generation system |
| CN103321778A (en) * | 2012-02-29 | 2013-09-25 | 伊顿公司 | Volumetric energy recovery device and systems |
| CN105240053A (en) * | 2015-11-04 | 2016-01-13 | 江西宝象科技有限公司 | Screw expander |
-
2010
- 2010-10-29 CN CN2010205815909U patent/CN201826898U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321778A (en) * | 2012-02-29 | 2013-09-25 | 伊顿公司 | Volumetric energy recovery device and systems |
| CN103195481A (en) * | 2013-03-25 | 2013-07-10 | 上海维尔泰克螺杆机械有限公司 | Screw expanding power generation device and organic Rankine cycle power generation system |
| CN103195481B (en) * | 2013-03-25 | 2015-07-29 | 上海维尔泰克螺杆机械有限公司 | A kind of screw expansion generating set, organic Rankine cycle power generation system |
| CN105240053A (en) * | 2015-11-04 | 2016-01-13 | 江西宝象科技有限公司 | Screw expander |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110511 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |