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CN-122020906-A - Molded line design method of corrosion-resistant multi-chamber plum blossom pump

CN122020906ACN 122020906 ACN122020906 ACN 122020906ACN-122020906-A

Abstract

The invention discloses a molded line design method of a corrosion-resistant multi-chamber plum blossom pump, which comprises the following steps of S1, molded line parameter design, S2, outer rotor design, S3 and inner rotor design. The design method of the invention has simple steps, can ensure that the molded lines of the inner rotor and the outer rotor are accurately meshed in the whole process of operation, the meshing point can separate the suction cavity from the discharge cavity, the stable operation and the high efficiency of the pump are ensured, the inner rotor and the outer rotor rotate at the respective centers, a closed cavity is formed by the combination of molded lines, the compression of gas is realized, and meanwhile, the molded lines make up the defects of simple molded lines and low area utilization rate of the traditional circular rotor cylinder, the defect of overlarge flow fluctuation and the defect of dynamic balance of an asymmetric structure are overcome.

Inventors

  • LIAN JIADI
  • XU JING

Assignees

  • 杭州博务流体科技有限公司

Dates

Publication Date
20260512
Application Date
20260313

Claims (7)

  1. 1. The method for designing the molded line of the corrosion-resistant multi-chamber plum blossom pump is characterized by comprising the following steps of: S1, design of molded line parameters Determining the number of blades of an inner rotor and an outer rotor of the quincuncial pump, and designing molded line design parameters of the inner rotor and the outer rotor; S2, outer rotor design Designing a first worm claw section molded line of the outer rotor based on the molded line design parameters, wherein the first worm claw section molded line consists of an arc section AB, an arc section BC, an arc section DE and an arc section EF which are sequentially connected; the equation of the arc section AB is: ; Wherein a 1 is the center X coordinate corresponding to the arc segment AB, b 1 is the center Y coordinate corresponding to the arc segment AB, r 1 is the radius of the arc segment AB, and θ 1 is the angle parameter variable of the arc segment AB; the equation of the arc segment BC is: ; Wherein a 2 is the center X coordinate corresponding to the arc segment BC, b 2 is the center Y coordinate corresponding to the arc segment BC, r 2 is the radius of the arc segment BC, and θ 2 is the angle parameter variable of the arc segment BC; the equation of the arc segment DE is: ; Wherein a 3 is the center X coordinate corresponding to the arc segment DE, b 3 is the center Y coordinate corresponding to the arc segment DE, r 3 is the radius of the arc segment DE, and θ 3 is the angle parameter variable of the arc segment DE; The equation of the arc segment EF is: ; Wherein a 4 is the center X coordinate corresponding to the arc segment EF, b 4 is the center Y coordinate corresponding to the arc segment EF, r 4 is the radius of the arc segment EF, and θ 4 is the angle parameter variable of the arc segment EF; S3, inner rotor design Designing a second worm claw part molded line of the inner rotor based on the molded line design parameters, wherein the second worm claw part consists of a circular arc section A 'B', a circular arc section B 'C', a circular arc section D 'E' and a circular arc section E 'F' which are sequentially connected; the equation of the arc segment A 'B' is: ; Wherein a 1 is the center X coordinate corresponding to the arc segment AB, b 1 is the center Y coordinate corresponding to the arc segment AB, r 1 is the radius of the arc segment AB, θ 1 is the angle parameter variable corresponding to the arc segment AB, E is the linear distance between the rotation center O' of the inner rotor and the rotation center O of the outer rotor, and Φ 2 is the rotation angle of the coordinate system X 2 O'Y 2 ; the equation of the arc section B 'C' is: ; Wherein a 2 is the center X coordinate corresponding to the arc segment BC, b 2 is the center Y coordinate corresponding to the arc segment BC, r 2 is the radius of the arc segment BC, θ 2 is the angle parameter variable of the arc segment BC, E is the linear distance between the rotation center O' of the inner rotor and the rotation center O of the outer rotor, and Φ 2 is the rotation angle of the coordinate system X 2 O'Y 2 ; the equation of the arc segment D 'E' is: ; Wherein a 3 is the center X coordinate corresponding to the arc segment DE, b 3 is the center Y coordinate corresponding to the arc segment DE, r 3 is the radius of the arc segment DE, θ 3 is the angle parameter variable of the arc segment DE, E is the linear distance between the rotation center O' of the inner rotor and the rotation center O of the outer rotor, and Φ 2 is the rotation angle of the coordinate system X 2 O'Y 2 ; the equation of the arc segment E 'F' is: ; Wherein a 4 is the center X coordinate corresponding to the arc segment EF, b 4 is the center Y coordinate corresponding to the arc segment EF, r 4 is the radius of the arc segment EF, θ 4 is the angle parameter variable of the arc segment EF, E is the linear distance between the rotation center O' of the inner rotor and the rotation center O of the outer rotor, and Φ 2 is the rotation angle of the coordinate system X 2 O'Y 2 .
  2. 2. The method for designing a molded line of the corrosion resistant multi-chamber plum blossom pump according to claim 1, wherein the arc segment BC and the arc segment DE in the step S2 are in transitional connection through a straight line segment CD, and the equation of the straight line segment CD is as follows: ; Wherein n is the center Y coordinate corresponding to the arc segment BC, and r 2 is the radius of the arc segment BC.
  3. 3. The method of claim 1, wherein the range of the angle parameter variable θ 1 of the arc segment AB in the step S2 is-0.1526 pi < θ 1 < -pi/2, the range of the angle parameter variable θ 2 of the arc segment BC is-0.3475 pi < θ 2 < pi/2, the range of the angle parameter variable θ 3 of the arc segment DE is 0.4267 pi < θ 3 <1.5 pi, and the range of the angle parameter variable θ 4 of the arc segment EF is 0≤θ 4 < pi/2.
  4. 4. The method of claim 1, wherein the second worm-claw section line of the inner rotor is a conjugate curve obtained by coordinate transformation of the first worm-claw section line of the outer rotor and using an engagement theorem.
  5. 5. The method for designing a molded line of the corrosion-resistant multi-chamber plum blossom pump according to claim 1, wherein in the step S3, the arc segment B 'C' and the arc segment D 'E' are in transitional connection through a straight line segment C 'D', and the equation of the straight line segment C 'D' is as follows: ; Wherein n is the center Y coordinate corresponding to the arc segment BC, r 2 is the radius of the arc segment BC, E is the linear distance between the rotation center O' of the inner rotor and the rotation center O of the outer rotor.
  6. 6. The method of claim 1, wherein the range of the angle parameter variable θ 1 corresponding to the arc segment AB in the step S3 is-pi/2 < θ 1 < -0.1526 pi, the range of the angle parameter variable θ 2 of the arc segment BC is-0.3475 pi < θ 2 < pi/2, the range of the angle parameter variable θ 3 of the arc segment DE is 0.4267 pi < θ 3 <1.5 pi, and the range of the angle parameter variable θ 4 of the arc segment EF is 0< θ 4 <0.3929 pi.
  7. 7. The method of claim 1, wherein the molded lines are in an axisymmetric structure, and the molded lines are fixed by the outer rotor, and the inner rotor is formed by eccentrically rotating and meshing along the outer rotor.

Description

Molded line design method of corrosion-resistant multi-chamber plum blossom pump Technical Field The invention relates to the technical field of plum blossom pump molded lines, in particular to a corrosion-resistant molded line design method of a multi-chamber plum blossom pump. Background Energy storage is the process of storing energy by a medium or device and releasing it when needed. A large amount of heat is generated in the energy storage process, mainly due to the physical or chemical changes of energy conversion and storage materials, and in practical application, the electrochemical reaction of the energy storage in the charge and discharge processes also generates heat, and if the heat cannot be effectively led out of the energy storage system, the internal temperature of the energy storage system may be increased, so that the safety of the performance of the energy storage materials is further affected. Aiming at the energy storage field, heat is generally taken away in the system through a refrigerant so as to reduce the temperature in the system. The refrigerant is required to provide power through the pump in the conveying process, so that heat in the system is taken away, the temperature is reduced, the service life of the energy storage equipment is prolonged, and meanwhile, the safety and the reliability in use are improved. In the refrigerant conveying process, a plum blossom pump is generally adopted for conveying. The rotor is an important component part of the quincuncial pump, the traditional double-circle rotor is limited by a single-chamber structure, and the inherent defects of low gas conveying efficiency, remarkable flow pulsation and the like exist, and meanwhile, the design of the molded line of the rotor is complex. Disclosure of Invention The invention aims to provide a technical scheme of a molded line design method of a corrosion-resistant multi-chamber plum blossom pump, aiming at the defects of the prior art, the design method has simple steps, not only can ensure that molded lines of an inner rotor and an outer rotor are accurately meshed in the whole process in the operation process, an meshing point can separate a suction cavity from a discharge cavity, the stable operation and high efficiency of the pump are ensured, but also the inner rotor and the outer rotor rotate in respective centers and form a closed cavity through molded line combination, the compression of gas is realized, and meanwhile, the molded line overcomes the defects of simple molded lines and low area utilization rate of a traditional circular rotor cylinder, and the defects of overlarge flow fluctuation and the defect of dynamic balance required by an asymmetric structure. In order to solve the technical problems, the invention adopts the following technical scheme: The method for designing the molded line of the corrosion-resistant multi-chamber plum blossom pump is characterized by comprising the following steps of: S1, design of molded line parameters Determining the number of blades of an inner rotor and an outer rotor of the quincuncial pump, and designing molded line design parameters of the inner rotor and the outer rotor; S2, outer rotor design Based on the molded line design parameters, designing a first worm claw molded line of the outer rotor, wherein the first worm claw molded line consists of an arc section AB, an arc section BC, an arc section DE and an arc section EF which are sequentially connected; the equation for arc segment AB is: ; Wherein a 1 is the center X coordinate corresponding to the arc segment AB, b 1 is the center Y coordinate corresponding to the arc segment AB, r 1 is the radius of the arc segment AB, and θ 1 is the angle parameter variable of the arc segment AB; the equation for arc segment BC is: ; Wherein a 2 is the center X coordinate corresponding to the arc segment BC, b 2 is the center Y coordinate corresponding to the arc segment BC, r 2 is the radius of the arc segment BC, and θ 2 is the angle parameter variable of the arc segment BC; the equation for the arc segment DE is: ; Wherein a 3 is the center X coordinate corresponding to the arc segment DE, b 3 is the center Y coordinate corresponding to the arc segment DE, r 3 is the radius of the arc segment DE, and θ 3 is the angle parameter variable of the arc segment DE; The equation for arc segment EF is: ; Wherein a 4 is the center X coordinate corresponding to the arc segment EF, b 4 is the center Y coordinate corresponding to the arc segment EF, r 4 is the radius of the arc segment EF, and θ 4 is the angle parameter variable of the arc segment EF; S3, inner rotor design Designing a second worm claw part molded line of the inner rotor based on molded line design parameters, wherein the second worm claw part consists of an arc section A 'B', an arc section B 'C', an arc section D 'E' and an arc section E 'F' which are connected in sequence; the equation for arc segment A 'B' is: ; Wherein a 1 is the center X