CN102619566A - Main machine of screw expander - Google Patents
Main machine of screw expander Download PDFInfo
- Publication number
- CN102619566A CN102619566A CN2012101208489A CN201210120848A CN102619566A CN 102619566 A CN102619566 A CN 102619566A CN 2012101208489 A CN2012101208489 A CN 2012101208489A CN 201210120848 A CN201210120848 A CN 201210120848A CN 102619566 A CN102619566 A CN 102619566A
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- rotor
- suction end
- cylinder block
- screw
- end base
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Abstract
The invention discloses a main machine of a screw expander, which is characterized by comprising a screw rotor pair, a suction end seat and a cylinder body, wherein both the suction end seat and the cylinder body are of double-layer wall structures, cooling water is introduced into the interlayer, and the suction end seat and the cylinder body are sequentially connected to form a two-segment type vertical subdivision structure; the screw rotor pair is arranged in the suction end seat and the cylinder body; a suction end cover is arranged outside the suction end seat, and the exhaust side of the cylinder body is provided with an exhaust end cover; a suction passage is arranged above the suction end seat; an exhaust passage is arranged at the lower part of the cylinder body; and the suction and exhaust arrangement way is upper inlet and lower outlet. The main machine of a screw expander has the advantages of high efficiency, stability and reliability.
Description
Technical field
The present invention relates to a kind of screw expander, relate in particular to the steam waste heat overbottom pressure and reclaim the screw expansion machine host that working condition uses.
Background technique
As the rotary displacement type mechanical screw expander that expands; Owing to have the similar superior function characteristics of helical-lobe compressor; As be adapted at that some flows are medium, fluctuation of operating conditions is big, move under the steam power reclaiming system of band liquid, the waste heat overbottom pressure recovery field that therefore begins can't to cover at some turbo-expanders realizes using.
Yet because operating conditions is different with the Technological Economy target, screw expander has the characteristics of himself in running.And mostly domestic existing screw expander is to be formed by the helical-lobe compressor transformation, and the system that is equipped with just puts into operation, so the efficient of unit and reliability are low, and the overall performance level is not high.
Summary of the invention
The object of the invention is exactly to overcome to adopt helical-lobe compressor to repack the defective that the decompressor main frame is produced in the past; And a kind of screw expansion machine host that aims at decompressor operating mode and operation characteristic design that provides makes it have efficient, reliable and stable premium properties performance.
A kind of screw expansion machine host of the present invention comprises screw rotor to, suction end base, cylinder block, and described screw rotor is to being arranged in said suction end base and the cylinder block; The air-breathing end cap of described suction end base arranged outside, described cylinder block exhaust side is provided with the exhaust end cap; Be characterized in that described suction end base and cylinder block are double-wall structure, pass to cooling water in the interlayer, this suction end base and cylinder block are linked in sequence, and form the vertical subdivision structure of two-part; Described suction end base top is provided with air intake passage; Described cylinder block bottom is provided with the exhaust passage.Described suction, exhaust setting type are to go out under enterprising.
Above-mentioned a kind of screw expansion machine host, wherein, described screw rotor is to comprising male rotor and female rotor, described male rotor and female rotor all adopt inner cooling structure.
Above-mentioned a kind of screw expansion machine host, wherein, the inside of described male rotor and female rotor is hollow structure, and inside passes to cooling liquid; One end of said male rotor and female rotor opens wide and is inlet, and the other end sealing sets out oral pore.
The present invention compared with prior art has following characteristics:
1, screw expander host shell of the present invention adopts two-part to arrange, when satisfied assembling and maintenance required, structure was more compact.Compare with the 3 stops of existing technology, reduced by a vertical subdivision, improved the tightness of main frame;
2, the suction end base of screw expansion machine host of the present invention and cylinder block are designed to double-wall structure; Pass to cooling water in the interlayer; Can under the worst hot case condition, reduce the thermal distortion of cylinder block as far as possible, guarantee the normal operation of the shaft seal structure and the bearing of rotor simultaneously;
3, screw rotor of the present invention effectively reduces the thermal distortion of rotor to adopting inner cooling structure;
4, the present invention keeps independently suction end base, can be the more unobstructed air intake passage of axial air-breathing setting of main frame; Help the installation maintenance of parts such as rotor, axle envelope, bearing, synchromesh gear simultaneously;
5, suction of the present invention, exhaust setting type are to go out under enterprising, prevent that the liquid that produces in the inflation process from accumulating in main frame;
6, has efficient, reliable and stable premium properties performance.
Description of drawings
Fig. 1 is the structure and shape schematic representation of screw expansion machine host of the present invention.
Fig. 2 is that the cylinder block of screw expansion machine host of the present invention is taken away loam cake, seen inner two structural representations that rotor is right.
Fig. 3 is the internal rotor cooling schematic representation of screw expansion machine host of the present invention.
Embodiment
See also Fig. 1 and Fig. 2.Screw expansion machine host of the present invention mainly by screw rotor to 1, suction end base 2, cylinder block 3 form.Described suction end base and cylinder block are double-wall structure, all pass to cooling water in the interlayer, and this suction end base and cylinder block are linked in sequence, and form the vertical subdivision structure of two-part.Described screw rotor comprises male rotor 11 and female rotor 12 to 1, is arranged in said suction end base and the cylinder block; The air-breathing end cap 21 of described suction end base arranged outside, described cylinder block exhaust side is provided with exhaust end cap 31.Described suction end base 2 tops are provided with air intake passage 22, and described cylinder block 3 bottoms are provided with exhaust passage 32, are enterprising suction, the exhaust setting type that goes out down.
Screw rotor of the present invention all adopts inner cooling structure to 1 male rotor 11 with female rotor 12.See also Fig. 3, the structure of described male rotor and female rotor is identical, and inside all is hollow structure, and inside passes to cooling liquid; Fig. 3 only shows the structural representation of one of them rotor.Said male rotor and female rotor all are set to an end and open wide to entering the mouth 13, and the other end sealing sets out oral pore 14.
In the actual moving process, high temperature and high pressure steam gets into screw expander through air intake passage 22, gets into the between cog volume of 11,12 of yin, yang rotors again through air-breathing aperture, promotes yin, yang rotor 11,12 and rotates, and sense of rotation is opposite with the screw rotor rotation direction.The between cog volume that the yin, yang rotor is 11,12 is with after air-breathing aperture finishes to be communicated with; Because differential pressure action, rotor is rotated further 1, and the between cog volume that the yin, yang rotor is 11,12 continues to increase; The gas that is closed in the HTHP in the between cog volume expands; Decrease temperature and pressure is communicated with vent ports until the between cog volume, and low-temp low-pressure gas is discharged via exhaust passage 7.Screw rotor is high-speed rotation under the gas expansion, is connect with external agency by male rotor 12 projecting shafts 5, externally output work.
In the running; Because like Fig. 3, rotor is a hollow-core construction to each internal rotor of 1, inside can feed cooling liquid and cool off; Cooling liquid flows into internal rotor from rotor one end 13; Rotor is cooled off, and the cooling liquid behind the absorption heat flows out from rotor the other end exit orifice 14, thereby reaches rotor to 1 inner colded effect.
The present invention has efficient, reliable and stable premium properties performance.
Claims (3)
1. screw expansion machine host comprises screw rotor to, suction end base, cylinder block, and described screw rotor is to being arranged in said suction end base and the cylinder block; The air-breathing end cap of described suction end base arranged outside, described cylinder block exhaust side is provided with the exhaust end cap;
It is characterized in that described suction end base and cylinder block are double-wall structure, pass to cooling water in the interlayer, this suction end base and cylinder block are linked in sequence, and form the vertical subdivision structure of two-part; Described suction end base top is provided with air intake passage; Described cylinder block bottom is provided with the exhaust passage.
2. a kind of screw expansion machine host according to claim 1 is characterized in that, described screw rotor is to comprising male rotor and female rotor, and described male rotor and female rotor all adopt inner cooling structure.
3. a kind of screw expansion machine host according to claim 2 is characterized in that the inside of described male rotor and female rotor is hollow structure, and inside passes to cooling liquid; One end of said male rotor and female rotor opens wide and is inlet, and the other end sealing sets out oral pore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101208489A CN102619566A (en) | 2012-04-24 | 2012-04-24 | Main machine of screw expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101208489A CN102619566A (en) | 2012-04-24 | 2012-04-24 | Main machine of screw expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102619566A true CN102619566A (en) | 2012-08-01 |
Family
ID=46559745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101208489A Pending CN102619566A (en) | 2012-04-24 | 2012-04-24 | Main machine of screw expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102619566A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2400575Y (en) * | 1999-12-16 | 2000-10-11 | 天津市石化通用机械研究所 | Screw expansion machine |
| CN101255815A (en) * | 2007-03-04 | 2008-09-03 | 周劲松 | Double-screw type internal combustion engine |
| CN102003214A (en) * | 2010-12-14 | 2011-04-06 | 范年宝 | Novel screw expanding power machine |
| CN201826900U (en) * | 2010-10-29 | 2011-05-11 | 淄博桑特动力设备有限公司 | Double screw expansion machine shell |
| CN202560328U (en) * | 2012-04-24 | 2012-11-28 | 上海齐耀膨胀机有限公司 | Host machine of screw expander |
-
2012
- 2012-04-24 CN CN2012101208489A patent/CN102619566A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2400575Y (en) * | 1999-12-16 | 2000-10-11 | 天津市石化通用机械研究所 | Screw expansion machine |
| CN101255815A (en) * | 2007-03-04 | 2008-09-03 | 周劲松 | Double-screw type internal combustion engine |
| CN201826900U (en) * | 2010-10-29 | 2011-05-11 | 淄博桑特动力设备有限公司 | Double screw expansion machine shell |
| CN102003214A (en) * | 2010-12-14 | 2011-04-06 | 范年宝 | Novel screw expanding power machine |
| CN202560328U (en) * | 2012-04-24 | 2012-11-28 | 上海齐耀膨胀机有限公司 | Host machine of screw expander |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120801 |