CN108980296B - Pump wheel structure of hydraulic torque converter - Google Patents
Pump wheel structure of hydraulic torque converter Download PDFInfo
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- CN108980296B CN108980296B CN201811074420.9A CN201811074420A CN108980296B CN 108980296 B CN108980296 B CN 108980296B CN 201811074420 A CN201811074420 A CN 201811074420A CN 108980296 B CN108980296 B CN 108980296B
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- outer ring
- torque converter
- inner ring
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- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000005266 casting Methods 0.000 claims description 8
- 238000013461 design Methods 0.000 claims description 7
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 abstract description 11
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H41/00—Rotary fluid gearing of the hydrokinetic type
- F16H41/24—Details
- F16H41/26—Shape of runner blades or channels with respect to function
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a pump impeller structure of a hydraulic torque converter, which belongs to the field of hydraulic torque converters and comprises an inner ring, an outer ring and blades, wherein the inner ring, the outer ring and the blades are close to the center of a circular circle; the inner ring and the outer ring form an approximately circular cavity for the liquid flow to flow outwards from the rotation center; the blades are uniformly arranged in the circular cavity in the circumferential direction of 360 degrees; the outer surface of the inner ring is formed into an approximate outer ring cambered surface by two tangential circular arcs; the inner surface of the outer ring is formed into an approximate inner ring cambered surface by two tangential circular arcs; the blade comprises a blade body which forms a space three-dimensional streamline structure from an inlet end to an outlet end along the liquid flow direction; the novel pump impeller of the hydraulic torque converter is in a structure of the approximately circular circulating circle and the space three-dimensional streamline blade, so that liquid flows in the circulating circle cavity along an arc line, the liquid flows in the cavity evenly transition along the streamline, large liquid flow impact and turbulence are avoided, liquid flow deviation at the inlet and outlet ends of the blade is reduced, and the transmission efficiency and the overall working performance of the hydraulic torque converter are remarkably improved.
Description
Technical Field
The invention relates to a novel impeller structure of a hydraulic torque converter, in particular to a novel impeller structure of a hydraulic torque converter with a circular impeller and a space three-dimensional streamline blade structure.
Background
The pump wheel of the hydraulic torque converter is used for converting mechanical energy transmitted by an engine into kinetic energy and pressure energy of working oil under the action of centrifugal force, driving the turbine to rotate, and converting the liquid energy into mechanical energy to be output. The working oil flowing out from the turbine passes through the fixed guide wheel, converts a part of pressure energy into kinetic energy, increases the rotation degree of the working oil and returns to the inlet of the pump wheel. Working oil circularly flows in the circular cavity of the hydraulic torque converter in this way, so that the normal operation of the hydraulic torque converter is formed.
The torque converter impeller plays a vital role in the overall operation of the torque converter. Under the same cycle circle, a new set of hydraulic torque converter performance can be easily obtained by adjusting the inlet and outlet angles of the impeller blade grid of the hydraulic torque converter, and the performance change trend of the hydraulic torque converter is stable, so that the method is the simplest and most effective method in the design of the hydraulic torque converter. Under the same blade inlet and outlet angle, the performance level of the hydraulic torque converter has larger difference due to the difference of the circulation circle and the space three-dimensional streamline blade structure of the hydraulic torque converter, and particularly, the influence on the transmission efficiency is most obvious. The domestic hydraulic torque converter has more circular forms, various thousands of years such as rectangle, oblate and the like, and the space three-dimensional blade structure has larger difference. The invention combines the actual use working condition of the hydraulic torque converter, considers the difficulty of the simulation manufacturing processing of the blade mould and the blade casting parting, develops a circular structure and a space three-dimensional streamline blade structure which are approximate to a circle, improves the integral transmission efficiency of the hydraulic torque converter obviously through repeated optimization design and test verification, and has stable trend of integral transmission performance from a braking working condition to a high-speed working condition, wide high-efficiency range and perfect matching of a high-efficiency point speed ratio and the rated working condition of the whole machine. The performance of the hydraulic torque converter should be at a leading level in China.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the pump wheel structure of the hydraulic torque converter, which can enable liquid flow to flow along an arc line in a circular cavity, enable the liquid flow in the cavity to uniformly transition along the flow line, avoid large liquid flow impact and turbulence, reduce liquid flow deviation at the inlet and outlet ends of the blades, remarkably improve the transmission efficiency and the whole working performance of the hydraulic torque converter, and has the advantages of simple structure and easiness in simulation manufacturing and processing of the blade mould.
The invention adopts the technical proposal for solving the technical problems in the prior art that:
the hydraulic torque converter impeller structure comprises an inner ring, an outer ring and 23 uniformly distributed identical blades, wherein the inner ring and the outer ring are close to the center of a circular circle, and the 23 identical blades are connected with the inner ring and the outer ring; the inner ring and the outer ring form a circular cavity with an approximate circular structure, the circular cavity is annularly arranged outwards from the rotation center, and liquid flows outwards from the center along the circular cavity; the 23 blades are uniformly arranged in the circular cavity in the circumferential direction of 360 degrees by taking the central axis as the center;
the outer arc surface of the inner ring is tangent by two arcs with the radius of R26mm and the radius of R16.6mm, and the arc surface rotates along the central axis to form an approximate outer arc surface, the center of the arc with the radius of R26mm is designed on the center line of the circular circle, and the arc with the radius of R16.6mm deviates from the center line of the circular circle by 8mm and is tangent with the arc with the radius of R26 mm;
the inner arc surface of the outer ring is tangent by two circular arcs with the radius of R55.5mm and the radius of R45.5mm, and the circular arc is rotated along the central axis to form an approximate inner arc surface, the center of the circular arc with the radius of R55.5mm is designed on the center line of the circular circle, and the radius of R45.5mm deviates from the center line of the circular circle by 10mm and is tangent with the radius of R55.5 mm;
the design streamline relative radius rb1=0.6462 of the inner ring and the outer ring, rb2=1; relative axial area ab1=0.7654, ab2= 0.8497;
the blades comprise identical blade bodies, and the blade bodies form a space three-dimensional streamline curved surface structure from an inlet end to an outlet end along the liquid flow direction; the inlet angle of the blade body along the middle streamline is 113+/-1 degrees, and the outlet angle is 110+/-1 degrees; the inner arc surface of the blade is connected with the outer arc surface of the inner ring, and the outer arc surface of the blade is connected with the inner arc surface of the outer ring; the thickness of the inlet of the inner ring of the blade is 4.3mm, and the thickness of the outlet is 2.2mm; the thickness of the inlet of the outer ring of the blade is 4.5mm, the thickness of the outlet is 1.3mm, and the blade is smoothly transited between the inner ring and the outer ring according to the different thicknesses of the blade.
According to the structure, the hydraulic torque converter pump impeller is preferably of an integral aluminum alloy casting integrated structure, so that the turnover of the die in the impeller casting process and the removal of cast slag bodies in the blades and the runners are facilitated, the weight of the pump impeller can be reduced, and the inertial impact of the pump impeller during high-speed operation can be reduced.
In summary, the novel pump impeller of the hydraulic torque converter adopts the approximately circular circulating circle and space three-dimensional streamline blade structure, so that liquid flows in the circulating circle cavity along an arc line, the liquid flows in the cavity are uniformly transited along the streamline line, large liquid flow impact and turbulence are avoided, the liquid flow deviation at the inlet and outlet ends of the blade is reduced, the transmission efficiency and the overall working performance of the hydraulic torque converter are obviously improved, and in addition, the novel pump impeller of the hydraulic torque converter has the advantages of simple structure and easiness in simulation manufacturing and processing of the blade mould.
The inlet and outlet ends of the blade body are designed into circular arc surfaces by taking the thickness of the blade as the diameter, the thickness of the blade body is uniformly transited along the angle space of the blade from the inlet end to the outlet end of the blade, and a space streamline body is formed, so that the uniform transition of the cross section of a space flow passage between two blades and the smooth transition of the inlet and outlet ends of the blade are ensured, and the impact and turbulence of liquid flow in the flow passage and the deviation of the liquid flow at the inlet and outlet ends of the blade are reduced. The impeller blade of the hydraulic torque converter ensures that the streamline camber line of the inner ring and the streamline camber line of the outer ring are overlapped as much as possible along the XY projection direction in design, reduces the distortion degree of the blade as much as possible, ensures that the space camber between the inner ring and the outer ring of the blade is in smooth transition, and is beneficial to the simulation manufacturing and processing of the three-dimensional space camber blade mould of the impeller of the hydraulic torque converter and the difficulty in the process of casting and parting the blade.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic illustration of the present invention with the inner ring removed;
FIG. 4 is a schematic plan view of a torus cavity;
FIG. 5 is a schematic view of a blade configuration;
FIGS. 6 and 7 are schematic views of different angle configurations of the blade;
FIG. 8 is a graph of raw torque converter traction operating conditions.
In the figure, 1, an inner ring; 1-1, an outer ring cambered surface; 2. an outer ring; 2-1, an inner annular cambered surface; 3. a circular space cavity; 4. a blade; 4-1, an inner annular cambered surface; 4-2, an outer ring cambered surface.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
A hydraulic torque converter pump impeller structure comprises an inner ring 1, an outer ring 2 and 23 identical blades 4, wherein the inner ring 1 and the outer ring 2 are close to the center of a circular circle, and the 23 identical blades are connected with the inner ring 1 and the outer ring 2; the inner ring and the outer ring form a circular cavity 3 for liquid flow to flow outwards from the rotation center; the inner rings of the 23 identical blades are connected with the outer arc surface of the inner ring of the circular ring, the outer ring is connected with the inner arc surface of the outer ring of the circular ring, and the 23 blades are uniformly arranged in the circular cavity in the 360-degree circumferential direction, so that the circular cavity is blocked into liquid channels with the same space shape along the liquid flow direction.
The inner arc surface 2-1 of the outer ring 2 is an approximate inner arc surface formed by two tangent circular arcs; the radii of the two circular arcs are R55.5mm and R45.5mm; referring to FIG. 4
The outer arc surface 1-1 of the inner ring 1 is an approximate outer arc surface formed by two tangent arcs; the radius of the two circular arcs is R26mm and R16.6mm; referring to FIG. 4
The design streamline relative radius rb1=0.6462, rb2=1; relative axial area ab1=0.7654, ab2= 0.8497.
The blade includes a blade body, please refer to fig. 5 to 7; the blade body is in a space three-dimensional streamline structure from the inlet end to the outlet end along the liquid flow direction; the inlet angle 113+/-1 DEG and the outlet angle 110+/-1 DEG of the middle streamline of the blade body, the inner arc surface 4-1 of the blade is connected with the outer arc surface 1-1 of the inner ring, and the outer arc surface 4-2 of the blade is connected with the inner arc surface 2-1 of the outer ring; the thickness of the inlet of the inner ring of the blade is 4.3mm, and the thickness of the outlet is 2.2mm; the thickness of the inlet of the outer ring of the blade is 4.5mm, the thickness of the outlet is 1.3mm, and the blade is smoothly transited between the inner ring and the outer ring according to the different thicknesses of the blade.
The inlet and outlet ends of the blade body are designed into circular arc surfaces by taking the thickness of the blade as the diameter, the thickness of the blade body is uniformly transited along the angle space of the blade from the inlet end to the outlet end of the blade, and a space streamline body is formed, so that the uniform transition of the cross section of a space flow passage between two blades and the smooth transition of the inlet and outlet ends of the blade are ensured, and the impact and turbulence of liquid flow in the flow passage and the deviation of the liquid flow at the inlet and outlet ends of the blade are reduced. The impeller blade of the hydraulic torque converter ensures that the streamline camber line of the inner ring and the streamline camber line of the outer ring are overlapped as much as possible along the XY projection direction in design, reduces the distortion degree of the blade as much as possible, ensures that the space camber between the inner ring and the outer ring of the blade is in smooth transition, and is beneficial to the simulation manufacturing and processing of the three-dimensional space camber blade mould of the impeller of the hydraulic torque converter and the difficulty in the process of casting and parting the blade.
The hydraulic torque converter pump impeller is of an integral aluminum alloy casting integrated structure, so that the turnover mould in the impeller casting process and the removal of cast slag bodies in the blades and the runners are facilitated, the weight of the pump impeller can be lightened, and the inertia impact of the pump impeller during high-speed operation is reduced.
To further illustrate the features of the invention, specific experimental data demonstrate the advantages of the invention.
Test verification of impeller cascades for 355mm circulating circle torque converter:
original parameter characteristic table of traction working condition of hydraulic torque converter:
the original parameters of the traction working condition of the hydraulic torque converter and the original characteristic curve of the traction working condition of the hydraulic torque converter in fig. 8 are as follows: i-speed ratio; k-torque conversion ratio; η -efficiency; MB-energy capacity. As can be seen from the data sheet, the highest torque converter efficiency 85.502, the high efficiency range (two-point ratio with efficiency of 75) is 0.883/0.418=2.11; the graph shows that each data curve is in smooth transition, particularly the MB performance curve is in nearly linear smooth transition in a low speed ratio region, and the data fluctuation is small; the efficiency and the high-efficiency range are obviously improved compared with the hydraulic torque converter with the same performance, and the efficiency of the general hydraulic torque converter is lower than 85 and the high-efficiency range is lower than 2. In summary, the novel pump impeller of the hydraulic torque converter provided by the invention adopts the approximately circular circulating circle and space three-dimensional streamline blade structure, so that liquid flows in the circulating circle cavity along an arc line, and the liquid flows in the cavity uniformly transition along the streamline line, thereby avoiding large liquid flow impact and turbulence, reducing liquid flow deviation at the inlet and outlet ends of the blades, and remarkably improving the transmission efficiency and the overall working performance of the hydraulic torque converter.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement and improvement made within the spirit and principles of the invention. For example, the circle and the blade size are scaled according to the similar principle and used for other similar products, the thickness of the blade is increased or decreased by +/-3 mm, and the adjustment of the inlet angle and the outlet angle of the blade by +/-10 degrees and the like are included in the protection scope of the invention.
Claims (2)
1. A kind of hydraulic torque converter pump impeller structure, characterized by that; the pump impeller structure is used for a 355mm circular hydraulic torque converter; the hydraulic torque converter pump impeller comprises an inner ring, an outer ring and 23 uniformly distributed identical blades, wherein the inner ring and the outer ring are close to the center of a circulating circle, and the inner ring and the outer ring are connected; the inner ring and the outer ring form a circular cavity with an approximate circular structure, the circular cavity is annularly arranged outwards from the rotation center, and liquid flows outwards from the center along the circular cavity; the 23 blades are uniformly arranged in the circular cavity in the circumferential direction of 360 degrees by taking the central axis as the center;
the outer arc surface of the inner ring is tangent by two arcs with the radius of R26mm and the radius of R16.6mm, and the arc surface rotates along the central axis to form an approximate outer arc surface, the center of the arc with the radius of R26mm is designed on the center line of the circular circle, and the arc with the radius of R16.6mm deviates from the center line of the circular circle by 8mm and is tangent with the arc with the radius of R26 mm;
the inner arc surface of the outer ring is tangent by two circular arcs with the radius of R55.5mm and the radius of R45.5mm, and the circular arc is rotated along the central axis to form an approximate inner arc surface, the center of the circular arc with the radius of R55.5mm is designed on the center line of the circular circle, and the radius of R45.5mm deviates from the center line of the circular circle by 10mm and is tangent with the radius of R55.5 mm;
the design streamline relative radius rb1=0.6462 of the inner ring and the outer ring, rb2=1; relative axial area ab1=0.7654, ab2= 0.8497; the blade comprises a blade body, wherein the blade body forms a space three-dimensional streamline curved surface structure from an inlet end to an outlet end along the liquid flow direction; the inlet angle of the blade body along the middle streamline is 113+/-1 degrees, and the outlet angle is 110+/-1 degrees; the inner arc surface of the blade is connected with the outer arc surface 1-1 of the inner ring, and the outer arc surface of the blade is connected with the inner arc surface of the outer ring; the thickness of the inlet of the inner ring of the blade is 4.3mm, and the thickness of the outlet is 2.2mm; the thickness of the inlet of the outer ring of the blade is 4.5mm, the thickness of the outlet is 1.3mm, and the blade is smoothly transited between the inner ring and the outer ring according to the different thicknesses of the blade.
2. The torque converter impeller structure of claim 1, wherein: the hydraulic torque converter pump impeller is of an integral aluminum alloy casting integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074420.9A CN108980296B (en) | 2018-09-14 | 2018-09-14 | Pump wheel structure of hydraulic torque converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811074420.9A CN108980296B (en) | 2018-09-14 | 2018-09-14 | Pump wheel structure of hydraulic torque converter |
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| Publication Number | Publication Date |
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| CN108980296A CN108980296A (en) | 2018-12-11 |
| CN108980296B true CN108980296B (en) | 2024-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811074420.9A Active CN108980296B (en) | 2018-09-14 | 2018-09-14 | Pump wheel structure of hydraulic torque converter |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113503352A (en) * | 2021-07-29 | 2021-10-15 | 江苏汇智高端工程机械创新中心有限公司 | Pump impeller structure of hydraulic torque converter of engineering machinery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866935A (en) * | 1985-12-30 | 1989-09-19 | Aisin-Warner Kabushiki Kaisha | Hydraulic torque converter |
| CN2931943Y (en) * | 2006-07-20 | 2007-08-08 | 中国船舶重工集团公司第七一一研究所 | Cascade structure of hydrodynamic torque-converter used in bulldozer |
| CN201071916Y (en) * | 2007-07-27 | 2008-06-11 | 重庆红宇精密工业有限责任公司 | Hydraulic moment changer |
| CN201288803Y (en) * | 2008-10-31 | 2009-08-12 | 重庆红宇精密工业有限责任公司 | Meridional section of hydrodynamic torque converter |
| CN202468895U (en) * | 2012-03-03 | 2012-10-03 | 陕西航天动力高科技股份有限公司 | High-power vehicle-used superflat hydraulic torque converter |
| CN204186916U (en) * | 2014-10-17 | 2015-03-04 | 广西柳工机械股份有限公司 | Hydraulic single-turbine torque converter |
| CN107606097A (en) * | 2017-10-09 | 2018-01-19 | 陕西航天动力高科技股份有限公司 | A kind of big pump impeller fluid torque-converter |
| CN208966974U (en) * | 2018-09-14 | 2019-06-11 | 天津工程机械研究院有限公司 | A kind of face of fluid torque converter structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2511834Y (en) * | 2001-09-19 | 2002-09-18 | 陕西航天动力高科技股份有限公司 | Hydraulic moment changer |
| CN201190773Y (en) * | 2008-03-21 | 2009-02-04 | 常林股份有限公司 | Hydrodynamic torque converter cascade for engineering machinery |
-
2018
- 2018-09-14 CN CN201811074420.9A patent/CN108980296B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866935A (en) * | 1985-12-30 | 1989-09-19 | Aisin-Warner Kabushiki Kaisha | Hydraulic torque converter |
| CN2931943Y (en) * | 2006-07-20 | 2007-08-08 | 中国船舶重工集团公司第七一一研究所 | Cascade structure of hydrodynamic torque-converter used in bulldozer |
| CN201071916Y (en) * | 2007-07-27 | 2008-06-11 | 重庆红宇精密工业有限责任公司 | Hydraulic moment changer |
| CN201288803Y (en) * | 2008-10-31 | 2009-08-12 | 重庆红宇精密工业有限责任公司 | Meridional section of hydrodynamic torque converter |
| CN202468895U (en) * | 2012-03-03 | 2012-10-03 | 陕西航天动力高科技股份有限公司 | High-power vehicle-used superflat hydraulic torque converter |
| CN204186916U (en) * | 2014-10-17 | 2015-03-04 | 广西柳工机械股份有限公司 | Hydraulic single-turbine torque converter |
| CN107606097A (en) * | 2017-10-09 | 2018-01-19 | 陕西航天动力高科技股份有限公司 | A kind of big pump impeller fluid torque-converter |
| CN208966974U (en) * | 2018-09-14 | 2019-06-11 | 天津工程机械研究院有限公司 | A kind of face of fluid torque converter structure |
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