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Double-tooth hydrogen circulating pump rotor set and double-tooth hydrogen circulating pump

A technology of hydrogen circulation and rotor group, applied in the direction of pumps, pump components, rotary piston pumps, etc., can solve the problems affecting the overall operation performance of the double-tooth hydrogen circulation pump, rotor wear, shortening the service life of the rotor, etc., so as to improve the service life. , Guarantee the ice breaking ability and the effect of protecting the molding line

Pending Publication Date: 2021-06-18
NINGBO BAOSI ENERGY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape of the rotor affects the overall operating performance of the double-tooth hydrogen circulation pump. The current mainstream double-tooth asymmetrical rotors on the market have large suction and exhaust ports and excellent ice-breaking capabilities, but the shape of the rotor has sharp points. , easily lead to rotor wear, which will greatly shorten the service life of the rotor

Method used

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  • Double-tooth hydrogen circulating pump rotor set and double-tooth hydrogen circulating pump
  • Double-tooth hydrogen circulating pump rotor set and double-tooth hydrogen circulating pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the double-toothed hydrogen circulation pump rotor set of the present invention includes a first double-toothed screw rotor and a second double-toothed screw rotor. The profile of the first double-toothed screw rotor is a centrally symmetrical figure, including a straight line A connected end to end. 1 B 1 , the first transition arc B 1 C 1 , optimization curve C 1 D. 1 , point meshing cycloid D 1 E. 1 , curve E 1 f 1 , the second transition arc F 1 G 1 and A 1 B 1 , B 1 C 1 、C 1 D. 1 、D 1 E. 1 ,E 1 f 1 , F 1 G 1 Figures that are each symmetrical about the center;

[0039] The profile line of the second twin-tooth screw rotor is a centrally symmetrical figure, including a straight line A connected head to tail 1 B 1 The conjugate envelope A of 2 B 2 , the first transition arc B 1 C 1 The conjugate envelope B of 2 C 2 , with the optimized curve C 1 D. 1 meshing point meshing cycloid C 2 D. 2 , meshing with the ...

Embodiment 2

[0056] The difference between the double-tooth hydrogen circulating pump rotor set of this embodiment and that of Embodiment 1 is that the optimization curve C 1 D. 1 Using straight line segments to optimize point meshing cycloids D 1 E. 1 Sharp point C formed with addendum circle 0 , the equation of optimizing the straight line segment is as follows, y013=a*(x013)+b, the first transition arc B 1 C 1 C on 1 Coordinates of points, point meshing cycloid D 1 E. 1 D on 1 Substituting the coordinates of the point into the equation of the above-mentioned optimized straight line segment can obtain the values ​​of parameters a and b, and the specific values ​​are obtained by modeling and calculating with matlab software. In this embodiment, a=0.733, b=-27.9, that is, the equation for optimizing the straight line segment is y013=0.733*(x013)+-27.9. Optimal Curve D 2 E. 2 with the optimized curve C 1 D. 1 Symmetrically, y024 = 0.733*(x024) + -27.9.

Embodiment 3

[0058] The difference between the double-tooth hydrogen circulating pump rotor set of this embodiment and that of Embodiment 1 is that the optimization curve C 1 D. 1 is an arc, and the equation for optimizing the arc is as follows, (x013-a) 2 +(y013-b) 2 = r 2 , radius r according to C 1 with D 1 The length of the connecting line is determined, and the first transition arc B 1 C 1 C on 1 Coordinates of points, point meshing cycloid D 1 E. 1 D on 1 The values ​​of parameters a and b can be obtained by substituting the coordinates of the points into the equation of the above-mentioned optimized arc, and the specific values ​​are obtained by modeling and calculating with matlab software. In the present embodiment, a=32.55, b=0.34, r=0.16, promptly the equation of optimizing circular arc is (x013-32.55) 2 +(y013-0.34) 2 =0.16 2 . Optimal Curve D 2 E. 2 with the optimized curve C 1 D. 1 Symmetrical, (x024-32.55) 2 +(y024-0.34) 2 =0.16 2 .

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Abstract

The invention relates to a double-tooth hydrogen circulating pump rotor set and a double-tooth hydrogen circulating pump and provides a novel double-tooth screw rotor molded line. The double-tooth hydrogen circulating pump rotor set comprises a first double-tooth screw rotor and a second double-tooth screw rotor, wherein a molded line of the first double-tooth screw rotor comprises a straight line, a transition circular arc, an optimized curve, a point meshing cycloid and an envelope curve, the central angle of the transition circular arc is determined according to a temperature of a working environment, and a molded line of the second double-tooth screw rotor and the molded line of the first double-tooth screw rotor are completely conjugated except the optimized curve. The molded lines of the two double-tooth screw rotors are simple in composition and are both centrosymmetric graphs, so that no eccentric torque is produced during operation, and the conditions of static balance and dynamic balance are met. The optimized curve can ensure that each rotor has a relatively large air suction and exhaust hole and a certain icebreaking capacity and can also prevent a sharp point formed by the point meshing cycloida and addendum circles from abrading the corresponding rotors, so that the molded lines can be well protected, and the service life of each rotor is prolonged.

Description

technical field [0001] The invention relates to the technical field of mechanical engineering design, and more specifically relates to a double-tooth hydrogen circulation pump rotor set and a double-tooth hydrogen circulation pump. Background technique [0002] With the increasing energy demand and deteriorating environmental problems, hydrogen energy has been developed and popularized as a new energy source, and hydrogen fuel cells are widely used in industrial fields such as airplanes, trains, and automobiles. Hydrogen fuel cells generate electricity through the electrochemical reaction between hydrogen and oxygen in the air. At the same time, the gas discharged after the reaction contains a large amount of hydrogen and some water vapor. When the ambient temperature is low, the water vapor will Condensed into ice. The double-tooth hydrogen circulation pump is an oil-free rotary machine used for hydrogen fuel cells. It can recycle a large amount of hydrogen-containing mixe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C18/16
CPCF04C18/16F04C2250/20
Inventor 张炯焱卢阳邬剑波
Owner NINGBO BAOSI ENERGY EQUIP
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