CN208578720U - A kind of flute profile of high pressure ratio double-screw compressor rotor - Google Patents
A kind of flute profile of high pressure ratio double-screw compressor rotor Download PDFInfo
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- CN208578720U CN208578720U CN201821044177.1U CN201821044177U CN208578720U CN 208578720 U CN208578720 U CN 208578720U CN 201821044177 U CN201821044177 U CN 201821044177U CN 208578720 U CN208578720 U CN 208578720U
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Abstract
The utility model discloses a kind of flute profiles of high pressure ratio double-screw compressor rotor.The high pressure ratio double-screw compressor includes female rotor and male rotor, each flute profile of the end face of female rotor is smoothly connected by six sections of curve head and the tail, each flute profile of the end face of male rotor is smoothly connected by six sections of curve head and the tail, in which: the tooth curve of each flute profile of female rotor end face includes rational spline curve, circular arc, arc envelope line and parabola；The tooth curve of each flute profile of male rotor end face includes rational spline envelope, circular arc, arc envelope line and parabola envelope.After adopting the above technical scheme, adjacent two sections of compositions tooth curve smoothly transits at tie point, contact line is shorter, and leakage triangle is relatively small, can bear high pressure ratio, to have good compressor heat mechanical property, improves the working efficiency of double-screw compressor.
Description
Technical field
The utility model relates to the rotor end-face flute profile of helical-lobe compressor more particularly to a kind of rotors of double-screw compressor
Molded line.
Background technique
There is helical-lobe compressor structure to be simple and convenient to operate, few easy workout part, member replacing are convenient, operational security is reliable etc.
Advantage, therefore had been more and more widely used in industrial department.The development of helical-lobe compressor depends greatly on
The design and processing of screw rotor molded line, in terms of the research of rotor of helical lobe compressor, rotor-type that China independently researchs and develops
There are also sizable gaps with world-class molded lines of rotor for line.As the screw rotor of core part, molded lines of rotor is first
First to meet engagement to require, secondly, the contact line that molded lines of rotor is formed need to meet continuous and short length requirement, in addition, rotor
It is small as far as possible that molded line is formed by leakage triangle area, to reduce gas leakage.Since helical-lobe compressor is come by path of contact
Reach the sealing between rotor, therefore the molded line of screw rotor determines the height of the most performance parameter of compressor.Turning
These aspects of the meshing characteristic of sub- stress deformation, expanded by heating and its molded lines of rotor are studied, and based on this, design height
The molded lines of rotor of effect is the target that those skilled in the art persistently pursue to improve the working efficiency of double-screw compressor.
Summary of the invention
Big, contact line that the technical problem to be solved by the utility model is to provide a kind of flute profile area utilization factors compared with
Short, the relatively small high pressure ratio double-screw compressor rotor of leakage triangle flute profile, the twin-screw with this flute profile compress
Machine, since male rotor and female rotor can be made to realize optimal engagement during the work time, adjacent two sections of compositions tooth curve is in tie point
Place smoothly transits, and molded line is in streamlined, and contact line is shorter, and leakage triangle is relatively small, high pressure ratio can be born, to have
Good compressor heat mechanical property, improves the working efficiency of double-screw compressor, and improve precision in process, extends
The service life of cutter.
In order to solve the above technical problems, technical solution adopted in the utility model is:
A kind of flute profile of high pressure ratio double-screw compressor rotor, the high pressure ratio double-screw compressor includes female rotor and sun
Each flute profile of rotor, the end face of female rotor is smoothly connected by six sections of curve head and the tail, and each flute profile of the end face of male rotor is by six
Section curve head and the tail be smoothly connected, in which: the tooth curve of each flute profile of female rotor end face include rational spline curve, circular arc,
Arc envelope line and parabola；The tooth curve of each flute profile of male rotor end face includes rational spline envelope, circular arc, arc envelope
Line and parabola envelope.
The utility model develops a kind of novel double-screw compressor using the algebraic approach of mathematics in conjunction with geometric projection
Rotor flute profile, yin, yang number of rotor teeth are respectively 7 teeth and 6 teeth, and the molded lines of rotor of the utility model has following compared to other molded line
Advantage and feature:
1. the yin, yang rotor due to the utility model uses proper tooth depth radius, tooth form area utilization factor
The case where having reached 51%, being suitble to high pressure ratio, while deep transverse tooth thickness is remained again, so that rotor reaches relatively good rigidity
Condition；
2. reducing the disturbance resistance of air-flow since the Profile Design of yin, yang rotor is at streamlined, reducing loss, drop
Low noise, improves the operational efficiency of rotor；
Make the design of curve easy 3. the molded line of yin, yang rotor uses spline curve, more fairing is adopted at tooth top
Make contact line shorter with parabola, leakage is reduced；
4. being smoothly connected between the molded line flank of tooth, without cusp on molded line, yin, yang rotor diameter is the same, it is easy to process, detection and
Pairing between rotor, so that cutter life greatly increases；
5. enclosed volume between the molded line of yin, yang rotor can air-breathing to double-screw compressor and exhaust process generate compared with
Big influence.Enclosed volume between the yin, yang molded lines of rotor of the utility model is very small, can not only make the tooth of yin, yang rotor
Between stress and noise it is smaller, the air in smaller enclosed volume can also generate lesser heat, to keep compressor
Thermal balance and compressor operation stationarity.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the embodiment of the utility model female rotor and male rotor in intermeshing.
Fig. 2 is the flute profile line schematic diagram of the utility model female rotor.
Fig. 3 is the flute profile line schematic diagram of the utility model male rotor.
In figure: O1 is the axle center of male rotor, and O2 is the axle center of female rotor；R1 is the radius of the outside circle of male rotor, and R2 is
The radius of female rotor outside circle；Mj is the pitch circle of male rotor, and R1j is the pitch radius of male rotor；Fj is the pitch circle of female rotor,
R2j is the pitch radius of female rotor, R2j=R2；A is the center of two rotors away from A=R1j+R2j；O3 is female rotor circular arc A2B2
The center of circle, R3 is the radius of female rotor circular arc A2B2；O4 is the vertex of female rotor parabola C2D2, and O5 is female rotor circular arc F2G2
The center of circle, R5 is the radius of female rotor circular arc E2F2；O6 is the center of circle of male rotor circular arc B1C1, and R6 is male rotor circular arc B1C1
Radius；O7 is the center of circle of male rotor circular arc E1F1, and R7 is the radius of male rotor circular arc E1F1.
Specific embodiment
In the following with reference to the drawings and specific embodiments to a kind of flute profile of high pressure ratio double-screw compressor rotor of the utility model
It is described in detail.
It please refers to Fig.1 to Fig.3.According to the female rotor F and sun of a kind of double-screw compressor of an embodiment of the present invention
The rotor flute profile of rotor M is in asymmetrical type, and the number of teeth on female rotor F is more than the number of teeth on male rotor M.In the present embodiment, sun
The gear ratio of rotor M and female rotor F is 6:7.
According to the flute profile of the high pressure ratio double-screw compressor rotor of an embodiment of the present invention, wherein the double spiral shells of high pressure ratio
Bar compressor includes female rotor and male rotor, and each flute profile of the end face of female rotor is smoothly connected by six sections of curve head and the tail, sun
Each flute profile of the end face of rotor is smoothly connected by six sections of curve head and the tail, in which: the tooth curve of each flute profile of female rotor end face
Including rational spline curve, circular arc, arc envelope line and parabola；The tooth curve of each flute profile of male rotor end face includes reasonable sample
Envelope, circular arc, arc envelope line and parabola envelope.
In the present embodiment, the tooth curve of each flute profile of female rotor includes that sequence is smoothly connected: circular arc A2B2, arc envelope line
B2C2, parabola C2D2, rational spline curve D2E2, arc envelope line E2F2 and circular arc F2G2.The tooth of each flute profile of male rotor
Curve includes that sequence is smoothly connected: arc envelope line A1B1, circular arc B1C1, parabola envelope C1D1, rational spline envelope
Line D1E1, circular arc E1F1 and arc envelope line F1G1.
It is n1 times of female rotor pitch radius that the circular arc A2B2 of female rotor, which is by the center of circle, radius of the O3 inside female rotor pitch circle,
One section of circular arc, n1 be greater than the 0.05, positive number less than or equal to 0.1, circular arc A2B2 starting point A2 at it is adjacent with the female rotor separately
The terminal of one tooth is smoothly connected, and is smoothly connected at terminal B2 with circular arc B2C2；The arc envelope line A1B1 of male rotor is by sun
For rotor pitch circle when rolling along female rotor pitch circle, opposite female rotor circular arc A2B2 movement is formed by one section of circular arc packet of track
Winding thread.
The arc envelope line B2C2 of female rotor is the opposite male rotor by female rotor pitch circle when rolling along male rotor pitch circle
Circular arc B1C1 moves one section of arc envelope line for being formed by track；The circular arc B1C1 of male rotor is inside male rotor pitch circle
One section of circular arc that O6 is the center of circle, radius is n3 times of male rotor pitch radius, n3 are greater than the 0.2, positive number less than or equal to 0.3, circle
Arc B1C1 is smoothly connected at starting point B1 with arc envelope line A1B1, at terminal C1 with the smooth company of parabola envelope C1D1
It connects.
The parabola C2D2 of female rotor is using the O4 inside female rotor pitch circle as vertex, one section of parabola that Open Side Down；
Parabola C2D2 is smoothly connected at starting point C2 with arc envelope line B2C2, smooth with rational spline curve D2E2 at terminal D2
Connection；The parabola envelope C1D1 of male rotor is the opposite female rotor by male rotor pitch circle when rolling along female rotor pitch circle
Parabola C2D2 moves one section of parabola envelope for being formed by track.
The rational spline curve D2E2 of female rotor is smoothly connected at starting point D2 with parabola C2D2, at terminal E2 and round
Arc envelope E2F2 is smoothly connected；The rational spline envelope D1E1 of male rotor is by male rotor pitch circle along female rotor pitch circle
When rolling, opposite female rotor rational spline curve D2E2 movement is formed by one section of rational spline envelope of track.
The arc envelope line E2F2 of female rotor is the opposite male rotor by female rotor pitch circle when rolling along male rotor pitch circle
Circular arc E1F1 moves one section of arc envelope line for being formed by track；The circular arc E1F1 of male rotor is inside male rotor pitch circle
One section of circular arc that O7 is the center of circle, radius is n4 times of male rotor pitch radius, n4 are greater than the 0.1, positive number less than or equal to 0.2, circle
Arc E1F1 is smoothly connected at starting point E1 with rational spline envelope D1E1, at terminal F1 with the smooth company of arc envelope line F1G1
It connects.
The circular arc F2G2 of female rotor is n2 times of female rotor pitch radius shape by the center of circle, radius of the O5 outside female rotor pitch circle
At one section of circular arc, n2 is greater than the 0.1, positive number less than or equal to 0.2, and circular arc F2G2 is starting point F2 at and arc envelope line E2F2
It is smoothly connected, the starting point of another tooth adjacent with the female rotor is smoothly connected at terminal G2；The arc envelope line F1G1 of male rotor
It is by male rotor pitch circle when being rolled along female rotor pitch circle, opposite female rotor circular arc F2G2 movement is formed by one section of track
Arc envelope line.
In this way, the end face tooth type of screw compressor rotor is just made to come out completely.
Claims (6)
1. a kind of flute profile of high pressure ratio double-screw compressor rotor, the high pressure ratio double-screw compressor includes that female rotor and sun turn
Son, which is characterized in that each flute profile of the end face of the female rotor is smoothly connected by six sections of curve head and the tail, the male rotor
Each flute profile of end face is smoothly connected by six sections of curve head and the tail, in which: the tooth curve packet of each flute profile of the female rotor end face
Include rational spline curve, circular arc, arc envelope line and parabola；The tooth curve of each flute profile of the male rotor end face includes reasonable
Batten envelope, circular arc, arc envelope line and parabola envelope.
2. a kind of flute profile of high pressure ratio double-screw compressor rotor according to claim 1, which is characterized in that female rotor
The tooth curve of each flute profile includes that sequence is smoothly connected: circular arc A2B2, arc envelope line B2C2, parabola C2D2, rational spline
Curve D2E2, arc envelope line E2F2 and circular arc F2G2；
The tooth curve of each flute profile of male rotor includes that sequence is smoothly connected: arc envelope line A1B1, circular arc B1C1, parabola packet
Winding thread C1D1, rational spline envelope D1E1, circular arc E1F1 and arc envelope line F1G1.
3. a kind of flute profile of high pressure ratio double-screw compressor rotor according to claim 2, which is characterized in that the yin turns
In the tooth curve of each flute profile of son:
Circular arc A2B2 be using the O3 inside female rotor pitch circle as one section of circular arc that the center of circle, radius are n1 times of female rotor pitch radius,
N1 is the terminal light of circular arc A2B2 another tooth adjacent with the female rotor at starting point A2 greater than the 0.05, positive number less than or equal to 0.1
Slip is smoothly connected at terminal B2 with circular arc B2C2；
Arc envelope line B2C2 is by female rotor pitch circle when rolling along male rotor pitch circle, and opposite male rotor circular arc B1C1 is moved
It is formed by one section of arc envelope line of track；
Parabola C2D2 is using the O4 inside female rotor pitch circle as vertex, one section of parabola that Open Side Down；Parabola C2D2 exists
It is smoothly connected at starting point C2 with arc envelope line B2C2, is smoothly connected at terminal D2 with rational spline curve D2E2；
Rational spline curve D2E2 is smoothly connected at starting point D2 with parabola C2D2, at terminal E2 with arc envelope line E2F2
It is smoothly connected；
Arc envelope line E2F2 is by female rotor pitch circle when rolling along male rotor pitch circle, and opposite male rotor circular arc E1F1 is moved
It is formed by one section of arc envelope line of track；
Circular arc F2G2 using the O5 outside female rotor pitch circle as the center of circle, radius be n2 times of female rotor pitch radius formed a Duan Yuan
Arc, n2 are greater than the 0.1, positive number less than or equal to 0.2, and circular arc F2G2 is smoothly connected at starting point F2 with arc envelope line E2F2,
The starting point of another tooth adjacent with the female rotor is smoothly connected at terminal G2.
4. a kind of flute profile of high pressure ratio double-screw compressor rotor according to claim 2 or 3, which is characterized in that described
In the tooth curve of each flute profile of male rotor:
Arc envelope line A1B1 is by male rotor pitch circle when rolling along female rotor pitch circle, and opposite female rotor circular arc A2B2 is moved
It is formed by one section of arc envelope line of track；
Circular arc B1C1 be using the O6 inside male rotor pitch circle as one section of circular arc that the center of circle, radius are n3 times of male rotor pitch radius,
N3 is greater than the 0.2, positive number less than or equal to 0.3, and circular arc B1C1 is smoothly connected at starting point B1 with arc envelope line A1B1, at end
It is smoothly connected at point C1 with parabola envelope C1D1；
Parabola envelope C1D1 is the opposite female rotor parabola C2D2 by male rotor pitch circle when rolling along female rotor pitch circle
Movement is formed by one section of parabola envelope of track；
Rational spline envelope D1E1 is the opposite female rotor rational spline by male rotor pitch circle when rolling along female rotor pitch circle
Curve D2E2 moves one section of rational spline envelope for being formed by track；
Circular arc E1F1 be using the O7 inside male rotor pitch circle as one section of circular arc that the center of circle, radius are n4 times of male rotor pitch radius,
N4 is greater than the 0.1, positive number less than or equal to 0.2, and circular arc E1F1 is smoothly connected at starting point E1 with rational spline envelope D1E1,
It is smoothly connected at terminal F1 with arc envelope line F1G1；
Arc envelope line F1G1 is by male rotor pitch circle when rolling along female rotor pitch circle, and opposite female rotor circular arc F2G2 is moved
It is formed by one section of arc envelope line of track.
5. a kind of flute profile of high pressure ratio double-screw compressor rotor according to claim 1, which is characterized in that the yin
The rotor flute profile of rotor and male rotor is in asymmetrical type, and the number of teeth on female rotor is more than the number of teeth on male rotor.
6. a kind of flute profile of high pressure ratio double-screw compressor rotor according to claim 1, which is characterized in that the sun turns
The gear ratio of son and female rotor is 6:7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821044177.1U CN208578720U (en) | 2018-07-01 | 2018-07-01 | A kind of flute profile of high pressure ratio double-screw compressor rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821044177.1U CN208578720U (en) | 2018-07-01 | 2018-07-01 | A kind of flute profile of high pressure ratio double-screw compressor rotor |
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| Publication Number | Publication Date |
|---|---|
| CN208578720U true CN208578720U (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821044177.1U Withdrawn - After Issue CN208578720U (en) | 2018-07-01 | 2018-07-01 | A kind of flute profile of high pressure ratio double-screw compressor rotor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757452A (en) * | 2018-07-01 | 2018-11-06 | 上海齐耀螺杆机械有限公司 | A kind of flute profile of high pressure ratio double-screw compressor rotor |
-
2018
- 2018-07-01 CN CN201821044177.1U patent/CN208578720U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757452A (en) * | 2018-07-01 | 2018-11-06 | 上海齐耀螺杆机械有限公司 | A kind of flute profile of high pressure ratio double-screw compressor rotor |
| CN108757452B (en) * | 2018-07-01 | 2024-04-02 | 上海齐耀螺杆机械有限公司 | Tooth type of high-pressure ratio double-screw compressor rotor |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190305 Effective date of abandoning: 20240402 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190305 Effective date of abandoning: 20240402 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |