CN201826900U - Double screw expansion machine shell - Google Patents
Double screw expansion machine shell Download PDFInfo
- Publication number
- CN201826900U CN201826900U CN2010205815701U CN201020581570U CN201826900U CN 201826900 U CN201826900 U CN 201826900U CN 2010205815701 U CN2010205815701 U CN 2010205815701U CN 201020581570 U CN201020581570 U CN 201020581570U CN 201826900 U CN201826900 U CN 201826900U
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- CN
- China
- Prior art keywords
- cylinder block
- end cap
- air inlet
- exhaust
- hole
- 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
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model particularly relates to a double screw expansion machine shell which comprises a cylinder block, an exhaust end cap and a gear box, and is characterized in that the cylinder block is internally provided with a horizontal 8-shaped cylinder hole; an air inlet is arranged at the upper part of one end of the cylinder hole; an air outlet is arranged at the lower part of the other end of the cylinder hole; the gear box is arranged at the air inlet end of the cylinder block; an air outlet end cap is arranged on the air outlet end surface of the cylinder block; and the air inlet end of the cylinder block and the air outlet end cap are respectively provided with a mechanical seal installation hole and a bearing installation hole. The double screw expansion machine shell has the advantages of 1) saving an air inlet end cap, and enabling the air inlet to be directly arranged in the cylinder block, thus reducing the joint surface of the cylinder block and the air inlet end cap, namely, reducing one medium leakage channel; 2) eliminating the joint surface of the cylinder block and the air inlet end cap, thus enabling a gap between a screw expansion machine rotor and the air inlet and air outlet end surfaces to be convenient to control; and 3) eliminating the joint surface of the cylinder block and the air inlet end cap, thus enabling the straightness tolerance between the rotor center line and the center lines of the bearing installation holes at two ends of the rotor to be reduced; and the three advantages are all beneficial to the improvement of the volumetric efficiency of the screw expansion machine.
Description
Technical field
The utility model is specifically related to a kind of twin-screw expander housing.
Background technique
Twin-screw expander is widely used in the decompression process power recovery device in low-grade heat source and the industrial flow, both can be used for generating, also can be used for directly driving other dynamic power machine, present twin-screw expander housing is divided into three parts, be respectively cylinder block, air inlet end cap and exhaust end cap, the intake and exhaust end cap is connected with cylinder block by flange, and cylinder has two junction planes like this, junction plane also is the passage that medium is revealed, and has therefore increased the difficulty in conjunction with face seal.The bearing support of existing decompressor all is located on the inlet and outlet end cap, needs bearing hole and cylinder block upper rotor part centerline hole on the intake and exhaust end cap coaxial in installation process, and three part center lines are coaxial, and its assembly precision is relatively poor, reliability is not high.There is the gap of screw expansion machine rotor and cylinder inner wall and intake and exhaust end face directly to influence the volumetric efficiency of decompressor again, the junction plane of intake and exhaust end cap and cylinder block increases the interstice coverage of rotor and intake and exhaust end face, the coaxality of bearing hole that exhaust end covers and cylinder block upper rotor part centerline hole makes rotor increase with the interstice coverage of cylinder inner wall, so the decompressor volumetric efficiency in very large range changes.
The model utility content
The purpose of this utility model is to provide a kind of high volumetric efficiency, easy for installation, twin-screw expander housing that leakage is few.
The utility model is achieved by the following technical solution:
It is a kind of twin-screw expander housing, comprise cylinder block, exhaust end cap, gear-box, it is characterized in that: on cylinder block, be provided with " ∞ " shape casing bore, the top of casing bore one end is provided with inlet hole, the bottom of the casing bore the other end is provided with exhaust port, gear-box is arranged on the inlet end of cylinder block, and the exhaust end cap is installed on the exhaust end face of cylinder block, covers at cylinder block inlet end and exhaust end and is respectively equipped with machine seal installation hole and bearing mounting hole.
As a preferred version of the present utility model: gear-box and cylinder block are structure as a whole
As a preferred version of the present utility model: gear-box is connected on the cylinder block by flange.
As a preferred version of the present utility model: the exhaust end cap is connected on the exhaust end face of cylinder block by flange.
As a preferred version of the present utility model: cylinder block air inlet end face is provided with the axial admission aperture that adapts with molded lines of rotor, and exhaust end covers and is provided with the axial exhaust aperture.
The utility model is made up of cylinder block, exhaust end cap and gear-box, cylinder block is provided with " ∞ " shape casing bore, the top of casing bore one end is provided with inlet hole, the bottom of the casing bore the other end is provided with exhaust port, the inlet hole end is provided with machine seal installation hole and bearing mounting hole on the cylinder block, and the machine seal installation hole is positioned at the inboard.Cylinder block air inlet end face is provided with the axial admission aperture that adapts with rotor, is provided with the rod radial air vent mouth that adapts with molded lines of rotor near exhaust port on the cylinder hole wall, and exhaust end covers and is provided with the axial exhaust aperture.The cylinder block inlet end is provided with gear-box, and gear-box can be structure as a whole with cylinder block and also can be connected on the cylinder block by flange, and gear-box is provided with gear box cover.The exhaust end cap is connected on the cylinder block exhaust end face by flange, and exhaust end covers and is provided with machine seal installation hole and bearing mounting hole, and the machine seal installation hole is positioned at the inboard, and the exhaust end cap the other end is provided with the shaft extension end cap.
Advantage of the present utility model:
1) this model utility has been saved the air inlet end cap, and inlet hole is set directly on the cylinder block, has reduced the junction plane of cylinder block and air inlet end cap, has promptly reduced a leakage of medium.
2) removed the junction plane of cylinder block and air inlet end cap, made the gap of screw expansion machine rotor and intake and exhaust end face be convenient to control.
3) removed the junction plane of cylinder block and air inlet end cap, the Bearing Installation centerline hole straightness accuracy tolerance at rotor centerline and its two ends is reduced.
More than 3 raisings that all help the screw expander volumetric efficiency.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is an A-A sectional drawing among Fig. 1;
Fig. 3 is a B-B sectional drawing among Fig. 1;
Fig. 4 is a C-C sectional drawing among Fig. 1;
Fig. 5 is the utility model embodiment 2 a structural representation.
Exhaust end cap as shown in the figure, 1, the shaft extension end cap, 2,, 3, cylinder block, 4, gear-box, 5, gear box cover, 6, bolt, 7, inlet hole, 8, exhaust port, 9, bearing mounting hole, 10, the machine seal installation hole, 11, the axial admission aperture, 12, rod radial air vent mouth, 13, the air inlet end face, 14, the exhaust end face, 15, axial exhaust aperture, 16, casing bore.
Embodiment
Embodiment 1
Shown in Fig. 1,2,3,4, the utility model is made up of cylinder block 3, exhaust end cap 2 and gear-box 4, cylinder block 3 is provided with " ∞ " shape casing bore H, the top of casing bore 16 1 ends is provided with inlet hole 7, the bottom of casing bore 16 the other ends is provided with exhaust port 8, the inlet hole end is provided with machine seal installation hole 10 and bearing mounting hole 9 on the cylinder block 3, and machine seal installation hole 10 is positioned at the inboard.Cylinder block 3 air inlet end faces 13 are provided with the axial admission aperture 11 that adapts with rotor, are provided with the rod radial air vent mouth 12 that adapts with molded lines of rotor near exhaust port 8 on casing bore 16 walls, and exhaust end cap 2 is provided with axial exhaust aperture 15.Cylinder block 3 inlet ends are provided with gear-box 4, and gear-box 4 can be structure as a whole with cylinder block 3 and also can be connected on the cylinder block 3 by flange, and are fixing with bolt 6.Gear-box 4 is provided with gear box cover 5.Exhaust end cap 2 is connected on the cylinder block 3 exhaust end faces 14 by flange, and exhaust end cap 2 is provided with machine seal installation hole 10 and bearing mounting hole 9, and machine seal installation hole 10 is positioned at the inboard, and exhaust end cap 2 the other ends are provided with shaft extension end cap 1.
Embodiment 2:
As shown in Figure 5: gear-box 4 is connected with cylinder block 3 by flange, gear-box 4 gearless case lids 5, and all the other are all identical with embodiment 1.
Claims (5)
1. twin-screw expander housing, comprise cylinder block, exhaust end cap and gear-box, it is characterized in that: in cylinder block, be provided with " ∞ " shape casing bore, the top of casing bore one end is provided with inlet hole, the bottom of the casing bore the other end is provided with exhaust port, gear-box is arranged on the inlet end of cylinder block, and the exhaust end cap is installed on the exhaust end face of cylinder block, covers at cylinder block inlet end and exhaust end and is respectively equipped with machine seal installation hole and bearing mounting hole.
2. according to the described twin-screw expander housing of claim 1, it is characterized in that: gear-box and cylinder block are structure as a whole
3. according to the described twin-screw expander housing of claim 1, it is characterized in that: gear-box is connected on the cylinder block by flange.
4. according to the described twin-screw expander housing of claim 1, it is characterized in that: the exhaust end cap is connected on the exhaust end face of cylinder block by flange.
5. according to the described twin-screw expander housing of claim 1, it is characterized in that: cylinder block air inlet end face is provided with the axial admission aperture that adapts with molded lines of rotor, and exhaust end covers and is provided with the axial exhaust aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205815701U CN201826900U (en) | 2010-10-29 | 2010-10-29 | Double screw expansion machine shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205815701U CN201826900U (en) | 2010-10-29 | 2010-10-29 | Double screw expansion machine shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826900U true CN201826900U (en) | 2011-05-11 |
Family
ID=43965442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205815701U Expired - Fee Related CN201826900U (en) | 2010-10-29 | 2010-10-29 | Double screw expansion machine shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201826900U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619566A (en) * | 2012-04-24 | 2012-08-01 | 上海齐耀膨胀机有限公司 | Main machine of screw expander |
| CN102997516A (en) * | 2011-09-08 | 2013-03-27 | 上海汉钟精机股份有限公司 | Semi-closed twin-screw expander |
| CN103921063A (en) * | 2014-03-13 | 2014-07-16 | 江西华电电力有限责任公司 | Production method of housing for screw expanders and finished product |
-
2010
- 2010-10-29 CN CN2010205815701U patent/CN201826900U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102997516A (en) * | 2011-09-08 | 2013-03-27 | 上海汉钟精机股份有限公司 | Semi-closed twin-screw expander |
| CN102619566A (en) * | 2012-04-24 | 2012-08-01 | 上海齐耀膨胀机有限公司 | Main machine of screw expander |
| CN103921063A (en) * | 2014-03-13 | 2014-07-16 | 江西华电电力有限责任公司 | Production method of housing for screw expanders and finished product |
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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 |