CN209780965U - Three-screw expander - Google Patents
Three-screw expander Download PDFInfo
- Publication number
- CN209780965U CN209780965U CN201920093397.1U CN201920093397U CN209780965U CN 209780965 U CN209780965 U CN 209780965U CN 201920093397 U CN201920093397 U CN 201920093397U CN 209780965 U CN209780965 U CN 209780965U
- Authority
- CN
- China
- Prior art keywords
- rotor
- end cover
- female
- male
- female rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The utility model provides a three-screw expander, which comprises a housing, wherein a front end cover and a rear end cover are arranged on two sides of the housing, a male rotor and a first female rotor and a second female rotor which are symmetrically distributed on two sides of the male rotor and meshed with the male rotor are arranged in the housing, two air inlets are arranged on the front end cover, two air outlets are also arranged on the rear end cover, and the air inlets and the air outlets are communicated with the male rotor and the female rotor through air passage phases; the noise and the vibration are correspondingly smaller, higher input pressure can be borne, the flow can be doubled, and the efficiency is higher; the inertia force is low, so that higher rotating speed can be obtained, and the working efficiency is improved; the abrasion is less, and the service life is long; the utility model discloses be similar to three gear pump, with the reducible 25% of unit volume under the volume flow.
Description
Technical Field
The utility model belongs to the technical field of the expander technique and specifically relates to a three screw rod expanders.
Background
the existing power equipment in the field of new energy power generation such as solar photo-thermal power generation uses a steam turbine and a screw expansion power machine. The steam turbine has high requirement on the quality of steam, and the requirement fluctuation is small, so that efficient and stable power generation can be realized, and the steam turbine is suitable for large-scale high-power units. The screw expansion power machine is suitable for the fluid of vapor-liquid two phases, has low requirement on the quality of the steam, and can still keep high power generation efficiency when the working condition of a heat source fluctuates greatly. The double-screw expansion machine is suitable for small-sized low-power generator sets, meets the requirements of a distributed generation energy microgrid system, is used as a prime motor, and is widely applied to a heat energy generation circulating device due to the advantages of high efficiency, suitability for gas-liquid two-phase working media and good self-cleaning capacity.
The existing screw expander is mainly a single screw and a double screw, and the working principle of the single screw expander is as follows: high-pressure gas or steam enters the tooth grooves in the machine to push the screw rod and the star wheel to rotate, the volume between the tooth grooves is gradually increased along with the rotation of the screw rod and the star wheel, the medium is decompressed, cooled, expanded and does work, and finally the medium is discharged from the tail end of the tooth grooves. The rotation of the screw rod can drive the generator to rotate to output power. And for the double-screw expander, the working principle is as follows: the high-pressure gas enters the tooth space volume meshed with the female screw rotor and the male screw rotor to do work by expansion, the internal energy of the high-pressure gas is converted into the kinetic energy of the rotation of the screw to be output, and the high-pressure gas is suitable for superheated or saturated steam and two-phase mixed working media. However, in both single-screw and double-screw expanders, when the pressure of gas is high, the pressure cannot be used in high-pressure occasions due to the influences of the service life and rigidity of relevant parts, and the transmission efficiency and the service life are low.
Disclosure of Invention
To the not enough of prior art, the utility model provides a three screw rod expander.
the technical scheme of the utility model is that: a three-screw expander comprises a shell, a male rotor arranged in the shell, and a first female rotor and a second female rotor which are symmetrically distributed on two sides of the male rotor and meshed with the male rotor, wherein the male rotor, the first female rotor and the second female rotor are arranged in the shell in a straight line shape, and the first female rotor and the second female rotor are the same in rotation direction and opposite to the rotation direction of the male rotor.
Furthermore, a front end cover and a rear end cover are further arranged on two sides of the shell, and two ends of the male rotor and two ends of the first female rotor and two ends of the second female rotor are respectively installed on the front end cover and the rear end cover through corresponding bearing seats.
Furthermore, the front end cover and the rear end cover are respectively provided with a front cover and a rear cover.
Furthermore, a gear set is further arranged between the front end cover and the front cover, the gear set comprises a male rotor gear arranged on a screw rotating shaft of the male rotor, and a first female rotor gear and a second female rotor gear arranged on screw rotating shafts of the first female rotor and the second female rotor, and the first female rotor gear and the second female rotor gear are both meshed with the male rotor gear.
furthermore, a sealing end cover is arranged between the shaft surfaces of the male rotor.
Furthermore, a flange coupling is further mounted on the male rotor and connected with the motor through the flange coupling.
Furthermore, the front end housing on be provided with two air inlets, air inlet and the intake duct of setting in the front end housing be linked together, two the intake duct respectively with the cavity between first cloudy rotor and the positive rotor and the cavity between second cloudy rotor and the positive rotor be linked together.
furthermore, the rear end cover is also provided with two air outlets which are communicated with air outlet channels arranged in the rear end cover, and the two air outlet channels are respectively communicated with a cavity between the first female rotor and the male rotor and a cavity between the second female rotor and the male rotor.
The working principle is as follows: hot water, water vapor or water vapor mixed fluid with certain temperature and pressure enters an air inlet channel in the front end cover through the two air inlets, cavities of the female spiral rotor and the male spiral rotor are gradually enlarged in an outlet groove of the male spiral rotor, the steam or the hot water is cooled, decompressed, expanded and worked to push the female rotor and the male rotor to rotate, and the worked steam or hot water is discharged from an air outlet channel below the rear end cover. The power is output from the output end of the male spiral rotor, and can drive equipment such as a water pump or a generator and the like. The two air inlet channels are provided, the air inlet volume is doubled, the work of the screw expander is doubled, and the final output power is doubled correspondingly.
the utility model has the advantages that:
1. The structure is simple, the male rotor, the first female rotor and the second female rotor are arranged in a straight line shape, so that the radial force borne by the male rotor is balanced, the loading condition is greatly improved, and the output is stable;
2. The utility model can bear higher input pressure, double the flow and improve the efficiency;
3. The utility model symmetrically distributes the female rotors, so that the noise and the vibration are correspondingly smaller;
4. The internal rotating part of the expander has low inertia force, can obtain higher rotating speed and improve the working efficiency;
5. The three-screw unit structure adopted by the utility model has less abrasion and long service life;
6. The utility model discloses be similar to three gear pump, with the reducible 25% of unit volume under the volume flow, the whole weight also correspondingly alleviates.
drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an internal structural view of the present invention;
In the figure, 1-shell, 2-male rotor, 3-first female rotor, 4-second female rotor, 5-front end cap, 6-rear end cap, 7-front cap, 8-flange coupling, 9-air inlet, 10-air outlet, 11-first female rotor gear, 12-second female rotor gear, 13-male rotor gear.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
As shown in fig. 1 and 2, a three-screw expander comprises a housing 1, a male rotor 2 arranged in the housing 1, and a first female rotor 3 and a second female rotor 4 symmetrically distributed on both sides of the male rotor 2 and engaged with the male rotor 2, wherein the male rotor 2, the first female rotor 3 and the second female rotor 4 are arranged in the housing 1 in a straight line shape, and the first female rotor 3 and the second female rotor 4 are in the same direction of rotation and opposite to the direction of rotation of the male rotor 2.
The two sides of the shell are also provided with a front end cover 5 and a rear end cover 6, the two ends of the male rotor 2, the first female rotor 3 and the second female rotor 4 are respectively installed on the front end cover 5 and the rear end cover 6 through corresponding bearing seats, and the front end cover 5 and the rear end cover 6 are respectively provided with a front cover 7 and a rear cover. A gear set is further arranged between the front end cover 5 and the front cover 6, the gear set comprises a male rotor gear 13 arranged on a screw rotating shaft of the male rotor 2, and a first female rotor gear 11 and a second female rotor gear 12 respectively arranged on screw rotating shafts of the first female rotor 3 and the second female rotor 4, and the first female rotor gear 11 and the second female rotor gear 12 are both meshed with the male rotor gear 13.
the male rotor 2 is also provided with a flange coupling 8, and the flange coupling 8 is connected with a motor. And a sealing end cover is arranged between the shaft surfaces of the male rotor 2.
Front end housing 5 on be provided with two air inlets 9, air inlet 9 be linked together with the intake duct of setting in front end housing 5, two the intake duct respectively with the cavity between first cloudy rotor 3 and the positive rotor 2 and the cavity between second cloudy rotor 4 and the positive rotor 2 is linked together. The rear end cover 6 is also provided with two gas outlets 10, the gas outlets 10 are communicated with gas outlet channels arranged in the rear end cover 6, the two gas outlet channels are respectively communicated with a cavity between the first female rotor 3 and the male rotor 2 and a cavity between the second female rotor 4 and the male rotor 2, two gas inlet channels are arranged, the gas inlet volume is doubled, the work of the screw expander is doubled, and finally the output power is doubled correspondingly.
The working principle is as follows: hot water, water vapor or water vapor mixed fluid with certain temperature and pressure enters an air inlet channel in the front end cover 5 through the two air inlets, cavities of the female spiral rotor and the male spiral rotor are gradually enlarged in an outlet groove of the male spiral rotor, the steam or the hot water is cooled, decompressed, expanded and worked to push the female spiral rotor and the male spiral rotor to rotate, and the worked steam or hot water is discharged from an air outlet channel below the rear end cover. The power is output from the output end of the male spiral rotor, and can drive equipment such as a water pump or a generator and the like.
The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.
Claims (8)
1. A three-screw expander is characterized in that: the rotor comprises a shell, a male rotor arranged in the shell, and a first female rotor and a second female rotor which are symmetrically distributed on two sides of the male rotor and meshed with the male rotor, wherein the male rotor, the first female rotor and the second female rotor are arranged in the shell in a straight line shape, and the turning directions of the first female rotor and the second female rotor are the same and are opposite to the turning direction of the male rotor.
2. A three screw expander according to claim 1, wherein: the two sides of the shell are also provided with a front end cover and a rear end cover, and the two ends of the male rotor and the two ends of the first female rotor and the second female rotor are respectively installed on the front end cover and the rear end cover through corresponding bearing seats.
3. a three screw expander according to claim 2, wherein: the front end cover and the rear end cover are respectively provided with a front cover and a rear cover.
4. A three screw expander according to claim 3, wherein: the front end cover and the front cover are also provided with a gear set, the gear set comprises a male rotor gear arranged on a screw rotating shaft of the male rotor, a first female rotor gear and a second female rotor gear arranged on screw rotating shafts of the first female rotor and the second female rotor, and the first female rotor gear and the second female rotor gear are both meshed with the male rotor gear.
5. a three screw expander according to claim 1, wherein: and a sealing end cover is arranged between the shaft surfaces of the male rotor.
6. A three screw expander according to claim 5, wherein: and the male rotor is also provided with a flange coupling which is connected with the motor.
7. A three screw expander according to claim 2, wherein: the front end cover on be provided with two air inlets, air inlet and the intake duct of setting in the front end cover be linked together, two the intake duct respectively with the cavity between first cloudy rotor and the positive rotor and the cavity between second cloudy rotor and the positive rotor be linked together.
8. A three screw expander according to claim 2, wherein: the rear end cover is also provided with two air outlets which are communicated with air outlet channels arranged in the rear end cover, and the two air outlet channels are respectively communicated with a cavity between the first female rotor and the male rotor and a cavity between the second female rotor and the male rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093397.1U CN209780965U (en) | 2019-01-21 | 2019-01-21 | Three-screw expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093397.1U CN209780965U (en) | 2019-01-21 | 2019-01-21 | Three-screw expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209780965U true CN209780965U (en) | 2019-12-13 |
Family
ID=68792956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920093397.1U Expired - Fee Related CN209780965U (en) | 2019-01-21 | 2019-01-21 | Three-screw expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209780965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812297A (en) * | 2019-01-21 | 2019-05-28 | 五邑大学 | A kind of three screw expanders |
-
2019
- 2019-01-21 CN CN201920093397.1U patent/CN209780965U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812297A (en) * | 2019-01-21 | 2019-05-28 | 五邑大学 | A kind of three screw expanders |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109372775B (en) | Two-stage compressed air supply system of fuel cell | |
| CN209780965U (en) | Three-screw expander | |
| CN113217380A (en) | Double-screw compressor rotor designed based on intelligent algorithm | |
| US9797628B2 (en) | Device and method for converting thermal energy | |
| CN209976582U (en) | Four-screw expander | |
| CN111396329A (en) | High-efficient centrifugal compressor arrangement suitable for inert mixed working medium | |
| CN102926826A (en) | Claw type generator power generation circulating device for thermal power generation | |
| CN202937317U (en) | Fast starting turboset | |
| CN216894894U (en) | Double-screw compressor rotor | |
| CN201810353U (en) | Sweepforward type shaft seal structure | |
| CN105240053B (en) | Screw expander | |
| CN212318332U (en) | Cooling system of speed-increasing centrifugal air compressor | |
| CN1262737C (en) | Screw expansion power machine | |
| CN108252743B (en) | Full-flow circulating power generation device for geothermal energy | |
| CN208564969U (en) | Dry screw vacuum pump | |
| CN105240229B (en) | Solar light-heat power-generation system | |
| CN102337931B (en) | Rotor, expansion machine and engine using rotor and expansion machine system | |
| CN205089370U (en) | Screw expander | |
| CN206458604U (en) | A kind of single screw rod vavuum pump | |
| CN114542226B (en) | Turbine expansion power generation system based on ORC waste heat recovery and optimization method | |
| CN212337378U (en) | Rotor, pneumatic device and power generation system | |
| CN109812297A (en) | A kind of three screw expanders | |
| CN212535766U (en) | Rotor expander based on circular sealing plate | |
| CN109944641A (en) | A kind of four screw expanders | |
| CN111188651B (en) | Double-rotor expansion machine and use method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 Termination date: 20210121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |