CN103291366A - Method for reducing air suction quantity of twin-screw rod expander and twin-screw rod expander - Google Patents
Method for reducing air suction quantity of twin-screw rod expander and twin-screw rod expander Download PDFInfo
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- CN103291366A CN103291366A CN2013102542912A CN201310254291A CN103291366A CN 103291366 A CN103291366 A CN 103291366A CN 2013102542912 A CN2013102542912 A CN 2013102542912A CN 201310254291 A CN201310254291 A CN 201310254291A CN 103291366 A CN103291366 A CN 103291366A
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Abstract
The invention discloses a method for reducing an air suction quantity of a twin-screw rod expander which comprises an air inlet end seat, an air cylinder body, an air discharge end seat, a male rotor and a female rotor. The method comprises the steps of reducing length of the screw thread segments of the male rotor and the female rotor, and mounting a lead block on an end face of the air discharge end seat, wherein the end face of the air discharge end seat faces to the side of the air cylinder, the lead block comprises a first half part and a second half part, the first half part is provided with an outer side facing to the male rotor and an inner side facing away from the male rotor, the second half part is provided with an outer side facing to the female rotor and an inner side facing away from the female rotor, and the inner side of the first half part and the inner side of the second half part are connected. The invention also provides a twin-screw rod expander realizing the method. The method for reducing an air suction quantity of a twin-screw rod expander and the twin-screw rod expander are characterized in that the air suction quantity of the expander is reduced on the basis that a shell body structure and a rotor machining cutting tool of the twin-screw rod expander are not changed, and therefore manufacture cost is saved.
Description
Technical field
The present invention relates to reduce method and the twin-screw expander thereof of the gettering quantity of twin-screw expander.
Background technique
Secondary energy such as the waste heat that produces in the industrial production, used heat and restriction loss almost spread all over each power consumption industry, as industrial fields such as electric power, chemical industry, oil, metallurgy, mine, light industry, weavings.If can good this part resource of effective recycling, will save a large amount of energy consumptions for enterprise.Twin-screw expander has obtained application more and more widely as a kind of novel waste heat recovering device.In actual use, the decompressor type is divided into several grades according to the rotor size with slenderness ratio and adapts to different entrance conditions, but when actual conditions is not in operating mode scope commonly used, such as inlet flow rate is in usual range the time, and existing decompressor type just can't satisfy this situation.In order to adapt to the different inlet flow rate of operating mode this and commonly used, usually need to make a kind of new architecture, must redesign the rotor cutter and make new architecture, design one is generally the cycle of cutter 3-6 month, can increase greatly like this and make and design cost, and can prolong the input cycle of product, this all is a kind of loss for MANUFACTURER and user.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method that can reduce the gettering quantity of this decompressor on the basis of the shell construction that does not change original twin-screw expander and rotor machining tool.
Another technical problem to be solved by this invention is to provide a kind of twin-screw expander that realizes said method.
The invention provides a kind of method that reduces the gettering quantity of twin-screw expander, described twin-screw expander comprises inlet end seat, cylinder block, exhausting end base, male rotor and female rotor, and this method may further comprise the steps:
Reduce the length of the thread section of described male rotor and female rotor;
Towards the end face of cylinder block one side one helical pitch piece is installed at exhausting end base; This helical pitch piece comprises the first half ones and the second half ones; Described the first half ones have towards the outside of male rotor and back to the inboard of male rotor, and described the second half ones have towards the outside of female rotor and back to the inboard of female rotor, and the inboard of the inboard of this first half one and this second half ones interconnects.
The invention also discloses a kind of twin-screw expander, comprise inlet end seat, cylinder block, exhausting end base, male rotor and female rotor, its characteristics are that this twin-screw expander comprises a helical pitch piece, and the helical pitch piece is fixed on exhausting end base on the end face of cylinder block one side; This helical pitch piece comprises the first half ones and the second half ones; The first half ones have towards the outside of male rotor and back to the inboard of male rotor, and the second half ones have towards the outside of female rotor and back to the inboard of female rotor, and the inboard of the inboard of this first half one and this second half ones interconnects.
The present invention has the following advantages:
1, the present invention is under the situation of the shell construction that does not change original decompressor, thread section length by reducing expansion machine rotor and add the helical pitch piece, reduced the air inflow of decompressor, make the decompressor of same root diameter size can adapt to less inspiratory flow requirement, thereby avoided requiring to redesign the rotor cutter for adapting to less inspiratory flow.The present invention had both saved cost and had also improved manufacturing efficiency, had increased the Economy of decompressor greatly;
2, the housing of twin-screw expander of the present invention adopts two section type, has changed three stage structure in the past, compares with three stage structure, has improved the sealability of twin-screw expander greatly, has reduced vibration and noise.
Description of drawings
Fig. 1 is an embodiment's of helical pitch piece of the present invention cross sectional representation.
Fig. 2 is equipped with the male rotor of the decompressor of helical pitch piece and the flute profile line schematic representation of female rotor according to an embodiment of the invention.
Fig. 3 is that the helical pitch piece is installed on the position view of decompressor inside according to an embodiment of the invention.
Fig. 4 is equipped with the cross-sectional view of the decompressor of helical pitch piece according to an embodiment of the invention.
Fig. 5 is the schematic appearance of twin-screw expander according to an embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is made and to further specify.
Please refer to Fig. 1 to Fig. 5.The method that reduces the gettering quantity of twin-screw expander according to an embodiment of the invention may further comprise the steps:
Reduce the length of the thread section of the male rotor of twin-screw expander and female rotor;
Exhausting end base in twin-screw expander is installed a helical pitch piece towards the end face of cylinder block one side, and the structure of this helical pitch piece 1 as shown in Figure 1.A kind of preferred embodiment in, helical pitch piece 1 removably interconnects with the end face of the exhausting end base 2 of twin-screw expander, preferably, helical pitch piece 1 interconnects by the end face of screw 9 with exhausting end base 2, screw 9 can adopt socket head screw.Helical pitch piece 1 comprises the first half 1a of and the second half 1b of.The first half 1a of have towards the outside 11 of the male rotor 5 of twin-screw expander 100 and back to the inboard 12 of male rotor 5, the second half 1b of have towards the outside 13 of the female rotor 6 of twin-screw expander 100 and back to the inboard 14 of female rotor 6, and the inboard 12 of this first half 1a of interconnects with the inboard 14 of this second half 1b of.Helical pitch piece 1 equals twin-screw expander near the gap between exhausting end base 2 one ends back to the end face of exhausting end base 2 and male rotor thread section inlet end seat 4 is towards the gap between the end face of cylinder block and close inlet end seat 4 one ends of male rotor thread section.Helical pitch piece 1 can be filled up the space between rotor pair and the exhausting end base 2, prevents that rotor is to play.
The lateral profile of the cross section of the first half 1a of comprises the first curved section AB and the second curved section BE that is linked in sequence from top to bottom, the shape of the first curved section AB is identical with the shape of the long limit A ' B ' of the arbitrary tooth of male rotor shown in Figure 2, the second curved section BE is shaped as circular arc, and the center of circle O1 of the second curved section BE is positioned on the central axis of male rotor 5.The lateral profile of the cross section of the second half 1b of comprises the 3rd curved section CD and the 4th curved section CF that is linked in sequence from top to bottom, the shape of the 3rd curved section CD is identical with the shape of the long limit C ' D ' of the arbitrary tooth of female rotor shown in Figure 2, the 4th curved section CF is shaped as circular arc, and the center of circle O2 of the 4th curved section CF is positioned on the central axis of female rotor.After helical pitch piece 1 adopts above-mentioned profilogram, can make the exhaust process of screw expander more smooth, make things convenient for the decompressor exhaust.
The inboard profile of the cross section of the first half 1a of comprises the 5th curved section AG, the 5th curved section AG is shaped as circular arc, the 5th curved section AG and the second curved section BE concentric, the end of the 5th curved section AG links to each other with the first curved section AB, the diameter of the 5th curved section AG than the external diameter of male rotor little 0.5 millimeter～1 millimeter.The inboard profile of the cross section of the second half 1b of comprises the 6th curved section DG, the 6th curved section DG is shaped as circular arc, the 6th curved section DG and the 4th curved section CF concentric, the end of the 6th curved section DG links to each other with the 3rd curved section CD, the other end links to each other with the other end of the 5th curved section AG, the diameter of the 6th curved section DG than the external diameter of female rotor little 0.5 millimeter～1 millimeter.As shown in Figure 1, the inboard profile of the cross section of the first half 1a of and the second half 1b of all also comprises straightway GH.
Twin-screw expander 100 comprises exhausting end base 2, cylinder block 3, inlet end seat 4, male rotor 5, female rotor 6 and above-mentioned helical pitch piece 1 according to an embodiment of the invention.This twin-screw expander reduces thereby can adapt to the thread section length that rotor is right by adding the helical pitch piece, to obtain the requirement of less inspiratory flow, has avoided requiring to redesign the rotor cutter for adapting to less inspiratory flow.Wherein, inlet end seat 4 is shaped with cylinder block 3 integrally castings, thereby has improved the sealability of twin-screw expander, has reduced vibration and noise, and also be convenient to adjust concentricity when decompressor assembles.
Claims (10)
1. reduce the method for the gettering quantity of twin-screw expander, described twin-screw expander comprises inlet end seat, cylinder block, exhausting end base, male rotor and female rotor, it is characterized in that, this method may further comprise the steps:
Reduce the length of the thread section of described male rotor and female rotor;
Towards the end face of cylinder block one side one helical pitch piece is installed at exhausting end base; This helical pitch piece comprises the first half ones and the second half ones; Described the first half ones have towards the outside of male rotor and back to the inboard of male rotor, and described the second half ones have towards the outside of female rotor and back to the inboard of female rotor, and the inboard of the inboard of this first half one and this second half ones interconnects.
2. twin-screw expander flow regulator as claimed in claim 1, it is characterized in that, the lateral profile of the cross section of the first half ones comprises the first curved section AB and the second curved section BE that is linked in sequence from top to bottom, the shape of the described first curved section AB is identical with the shape on the long limit of the arbitrary tooth of male rotor, the described second curved section BE is shaped as circular arc, and the center of circle of this second curved section BE is positioned on the central axis of male rotor;
The lateral profile of the cross section of the second half ones comprises the 3rd curved section CD and the 4th curved section CF that is linked in sequence from top to bottom, the shape of described the 3rd curved section CD is identical with the shape on the long limit of the arbitrary tooth of female rotor, described the 4th curved section CF is shaped as circular arc, and the center of circle of the 4th curved section CF is positioned on the central axis of female rotor.
3. the method that reduces the gettering quantity of twin-screw expander as claimed in claim 2, it is characterized in that, the inboard profile of the cross section of the first half ones comprises the 5th curved section AG, described the 5th curved section AG is shaped as circular arc, the 5th curved section AG and the second curved section BE concentric, the end of the 5th curved section AG links to each other with the first curved section AB, the diameter of the 5th curved section AG than the external diameter of male rotor little 0.5 millimeter～1 millimeter;
The inboard profile of the cross section of the second half ones comprises the 6th curved section DG, described the 6th curved section DG is shaped as circular arc, the 6th curved section DG and the 4th curved section CF concentric, the end of the 6th curved section DG links to each other with the 3rd curved section CD, the other end links to each other with the other end of the 5th curved section AG, the diameter of the 6th curved section DG than the external diameter of female rotor little 0.5 millimeter～1 millimeter.
4. as any one described method that reduces the gettering quantity of twin-screw expander in the claim 1 to 3, it is characterized in that the helical pitch piece equals the inlet end seat towards the end face of cylinder block and the gap between close inlet end seat one end of male rotor thread section back to end face and the male rotor thread section of exhausting end base near the gap between exhausting end base one end.
5. the method that reduces the gettering quantity of twin-screw expander as claimed in claim 1 is characterized in that, the end face of described helical pitch piece and described exhausting end base removably interconnects.
6. a twin-screw expander comprises inlet end seat, cylinder block, exhausting end base, male rotor and female rotor, it is characterized in that, described twin-screw expander comprises a helical pitch piece, and described helical pitch piece is fixed on exhausting end base on the end face of cylinder block one side;
This helical pitch piece comprises the first half ones and the second half ones; Described the first half ones have towards the outside of male rotor and back to the inboard of male rotor, and described the second half ones have towards the outside of female rotor and back to the inboard of female rotor, and the inboard of the inboard of this first half one and this second half ones interconnects.
7. twin-screw expander as claimed in claim 6, it is characterized in that, the lateral profile of the cross section of the first half ones comprises the first curved section AB and the second curved section BE that is linked in sequence from top to bottom, the shape of the described first curved section AB is identical with the shape on the long limit of the arbitrary tooth of male rotor, the described second curved section BE is shaped as circular arc, and the center of circle of this second curved section BE is positioned on the central axis of male rotor;
The lateral profile of the second half cross sections comprises the 3rd curved section CD and the 4th curved section CF that is linked in sequence from top to bottom, the shape of described the 3rd curved section CD is identical with the shape on the long limit of the arbitrary tooth of female rotor, described the 4th curved section CF is shaped as circular arc, and the center of circle of the 4th curved section CF is positioned on the central axis of female rotor.
8. twin-screw expander as claimed in claim 7, it is characterized in that, the inboard profile of the cross section of the first half ones comprises the 5th curved section AG, described the 5th curved section AG is shaped as circular arc, the 5th curved section AG and the second curved section BE concentric, the end of the 5th curved section AG links to each other with the first curved section AB, the diameter of the 5th curved section AG than the external diameter of male rotor little 0.5 millimeter～1 millimeter;
The inboard profile of the cross section of the second half ones comprises the 6th curved section DG, described the 6th curved section DG is shaped as circular arc, the 6th curved section DG and the 4th curved section CF concentric, the end of the 6th curved section DG links to each other with the 3rd curved section CD, the other end links to each other with the other end of the 5th curved section AG, the diameter of the 6th curved section DG than the external diameter of female rotor little 0.5 millimeter～1 millimeter.
9. as any one described twin-screw expander in the claim 6 to 8, it is characterized in that the helical pitch piece equals the inlet end seat towards the end face of cylinder block and the gap between close inlet end seat one end of male rotor thread section back to end face and the male rotor thread section of exhausting end base near the gap between exhausting end base one end;
The end face of described helical pitch piece and described exhausting end base removably interconnects.
10. as any one described twin-screw expander in the claim 6 to 8, it is characterized in that described inlet end seat and described cylinder block integrally casting are shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254291.2A CN103291366B (en) | 2013-06-25 | 2013-06-25 | Method for reducing air suction quantity of twin-screw rod expander and twin-screw rod expander |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310254291.2A CN103291366B (en) | 2013-06-25 | 2013-06-25 | Method for reducing air suction quantity of twin-screw rod expander and twin-screw rod expander |
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| Publication Number | Publication Date |
|---|---|
| CN103291366A true CN103291366A (en) | 2013-09-11 |
| CN103291366B CN103291366B (en) | 2015-06-17 |
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| CN201310254291.2A Active CN103291366B (en) | 2013-06-25 | 2013-06-25 | Method for reducing air suction quantity of twin-screw rod expander and twin-screw rod expander |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010179575A (en) * | 2009-02-06 | 2010-08-19 | Japan Steel Works Ltd:The | Twin screw extruder for devolatilization |
| US20110069576A1 (en) * | 2009-09-18 | 2011-03-24 | Steer Engineering Private Limited | Barrel Alignment in Extruder Systems |
| CN102706022A (en) * | 2010-10-13 | 2012-10-03 | 株式会社神户制钢所 | Refrigerator |
| CN203374319U (en) * | 2013-06-25 | 2014-01-01 | 上海齐耀膨胀机有限公司 | Twin-screw expander |
-
2013
- 2013-06-25 CN CN201310254291.2A patent/CN103291366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010179575A (en) * | 2009-02-06 | 2010-08-19 | Japan Steel Works Ltd:The | Twin screw extruder for devolatilization |
| US20110069576A1 (en) * | 2009-09-18 | 2011-03-24 | Steer Engineering Private Limited | Barrel Alignment in Extruder Systems |
| CN102706022A (en) * | 2010-10-13 | 2012-10-03 | 株式会社神户制钢所 | Refrigerator |
| CN203374319U (en) * | 2013-06-25 | 2014-01-01 | 上海齐耀膨胀机有限公司 | Twin-screw expander |
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| CN103291366B (en) | 2015-06-17 |
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