CN210422767U - Energy conversion device based on fluid volume change - Google Patents

Energy conversion device based on fluid volume change Download PDF

Info

Publication number
CN210422767U
CN210422767U CN201921245996.7U CN201921245996U CN210422767U CN 210422767 U CN210422767 U CN 210422767U CN 201921245996 U CN201921245996 U CN 201921245996U CN 210422767 U CN210422767 U CN 210422767U
Authority
CN
China
Prior art keywords
curve
stator
rotor
wall
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201921245996.7U
Other languages
Chinese (zh)
Inventor
李松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201921245996.7U priority Critical patent/CN210422767U/en
Application granted granted Critical
Publication of CN210422767U publication Critical patent/CN210422767U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

The utility model relates to an energy conversion device based on fluid volume changes. The closed planetary roller comprises a stator and a rotor positioned in an inner cavity of the stator, a closed working cavity is formed between the stator and the rotor, three planetary rollers which are 120 degrees away from each other are arranged on the rotor along the circumferential direction, the outer contour line of the cross section of the working cavity is a closed line formed by connecting a first arc line, a second arc line, a third arc line, a first curve, a second curve, a third curve, a fourth curve, a fifth curve and a sixth curve, the inner contour line of the cross section of the working cavity is a circle with the axis of the rotor as the center of circle and the radius of the rotor as the radius, and the contour line of the cross section of the planetary roller is a closed line formed by connecting a fourth arc line, a fifth arc line, a sixth arc line, a seventh curve, an eighth curve and a ninth curve. The utility model discloses can satisfy simultaneously that the fluid volume is variable, the reliable sealed requirement of rotor for the stator inner chamber coaxial line is rotatory to promote energy conversion equipment's performance.

Description

Energy conversion device based on fluid volume change
Technical Field
The utility model relates to an energy conversion device based on fluid volume changes, accessible fluid volume changes, converts fluid pressure potential energy into driving torque, or converts input torque into fluid kinetic energy or potential energy, mainly is applied to fluid machinery fields such as steam turbine, hydraulic turbine, compressor, pneumatic motor, hydraulic pump, vacuum pump.
Background
At present, many fluid energy conversion devices convert energy or transfer fluid through volume change of fluid, and the volume change of fluid is mostly realized through relative rotation motion between a stator and a rotor, such as a steam turbine, a water turbine, a compressor, a pneumatic motor, a hydraulic pump, a vacuum pump, and the like. The mechanical structural forms of the devices are various, and include blade type, impeller type, turbine type, vortex type, runner type, rotary blade type, rotary swing type, sliding blade type, gear type, screw type, roots type, claw type and the like, but the structural forms can not simultaneously meet the requirements of variable fluid volume, reliable fluid sealing and coaxial rotation of the rotor relative to the inner cavity of the stator, so that some defects exist.
Firstly, a blade type: for example, the blades on the rotor of a steam turbine are arranged and combined on the rotor in a certain mode, mainly for the conversion of kinetic energy and less for the conversion of pressure potential energy.
The method has the following defects: poor sealing performance, low conversion efficiency and complex structure.
Secondly, a rotating wheel type: for example, the rotating wheels on the rotor of the water turbine realize the conversion of potential energy and kinetic energy of water flow through a plurality of rotating wheels on the rotor.
The method has the following defects: poor sealing performance, low conversion efficiency and large vibration.
Thirdly, rotating the sheet type: when the rotor eccentrically arranged in the cylinder body rotates, the sliding vane in the longitudinal groove of the rotor is forced to cling to the cylinder wall to freely slide along the radial direction, so that fluid is promoted to circularly enter and exit.
The method has the following defects: sliding friction exists between the rotor and the pump cavity, the rotor not only does linear reciprocating motion, but also eccentrically rotates, the sealing performance is not high, the rotating speed is not high, and the abrasion, the energy consumption and the vibration are large.
Fourthly, rotating and swinging: the rotor rotates around the eccentric shaft in the cylinder body, and fluid is separated through a slide vane or a slide valve, so that the separated volume is periodically changed, and the fluid is promoted to enter and exit. The method is mainly applied to vacuum pumps and the like.
The method has the following defects: poor sealing performance, poor dynamic balance performance, large abrasion, large vibration noise, low rotating speed and low energy efficiency.
Fifthly, screw type: the fluid is driven to enter and exit (or be compressed) through the reverse rotation of a pair of mutually meshed spiral male and female rotors (screw rods) in the cylinder, and the device is mainly applied to liquid pumps, compressors, vacuum pumps, blowers and the like.
The method has the following defects: the processing and assembling difficulty is high, the sealing effect is difficult to improve due to the shape of the screw and the dynamic meshing mode, the clearance leakage is high, the cost is high, the size is large, the discharge capacity is small, and the vibration is large under certain conditions.
Sixthly, Roots type: the fluid is driven to circulate in and out by the synchronous and reverse rotation of two mutually meshed Roots rotors (8-shaped, three-lobe and four-lobe) in the cylinder, and the two rotors are mainly applied to compressors, vacuum pumps, blowers and the like.
The method has the following defects: the sealing effect of the rotor is difficult to improve due to the appearance and the meshing mode of the rotor, the gap leakage is large, the energy efficiency is not high, and the processing difficulty is large.
Seventhly, vortex type: the double-function scroll compressor is formed by mutually meshing a movable scroll and a fixed scroll of two double-function equation molded lines, the movable scroll performs translation eccentric rotation (non-autorotation) with a small radius around the center of a base circle of the fixed scroll under the drive of an eccentric shaft, fluid is gradually compressed in a plurality of crescent compression cavities formed by meshing the movable scroll and the fixed scroll, and then the fluid is continuously discharged from an axial hole in the center of the fixed scroll, and the double-function scroll compressor is mainly applied to compressors and the like.
The method has the following defects: poor leakproofness, clearance leak great, compression ratio is low, and the eccentric motion of driving disk has restricted the rotational speed and has improved, and have vibrations, and the volume flow is lower.
Eighthly, impeller type: such as gas turbines and jet engines, the impeller is generally composed of a disk, a shroud, and blades. The fluid rotates at high speed with the impeller under the action of the impeller blades, and the fluid is acted by the rotating centrifugal force and flows in the impeller in a diffusion manner, so that the pressure of the fluid after passing through the impeller is improved.
The method has the following defects: the lower compression ratio affects the fuel combustion efficiency and is noisy.
Ninthly, a turbine type: such as gas turbines and jet engines, the turbine uses the fluid with energy to impact the propeller blades, and the main shaft connected with the turbine is driven to rotate, so that the kinetic energy of the fluid is converted into mechanical energy.
The method has the following defects: the turbine has low conversion utilization rate of the fuel gas energy and is easy to cause turbulence to the jet gas.
Disclosure of Invention
The utility model aims at providing an energy conversion device based on fluid volume changes makes it can satisfy simultaneously that the fluid volume is variable, the fluid is reliably sealed and the rotor is rotatory for the stator inner chamber coaxial line's requirement to promote energy conversion device's performance.
The utility model discloses an energy conversion device based on fluid volume changes, including stator and the rotor that is arranged in stator cavity, the rotor passes through the rotor shaft and rotatably supports the both ends at the stator, the rotor is cylindrical, it and stator cavity coaxial line normal running fit in stator cavity, on the cylindrical inner chamber wall with rotor normal running fit's stator, seted up the recess along circumference, make and form airtight working chamber between stator and the rotor, the inner contour of this working chamber cross section is for using rotor axle center as the centre of a circle, rotor radius is the circle of radius, the outer contour of this working chamber cross section is by first circular arc line, second circular arc line, third circular arc line, first curve, second curve, third curve, fourth curve, fifth curve and the closed line that the sixth curve formed by connecting; three cavity grooves are axially formed in the cylindrical surface of the rotor, the three cavity grooves form 120 degrees in the circumferential direction of the rotor, the contour line of the cross section of each cavity groove is an arc line, two end faces of each cavity groove are respectively flush with two side faces of the corresponding groove, a planetary roller is arranged in each cavity groove, the planetary rollers are rotatably supported at two ends of the rotor through a roller shaft and are coaxial with the cavity grooves, the contour line of the cross section of the planetary roller is a closed line formed by connecting a fourth arc line, a fifth arc line, a sixth arc line, a seventh curve, an eighth curve and a ninth curve, the center point of the cross section of the planetary roller is taken as a rotational symmetry center, and the rotation angle is 120 degrees, and in a plane rectangular coordinate system taking the center point as the origin, the equation of the seventh curve is as follows:
x2+( R2-y)2- R1 2=0, wherein-a ≦ x ≦ a, (R)2- R1）≤y≤b。
The radius of the fourth, fifth and sixth arc lines is consistent with that of the contour line of the cross section of the cavity groove and is R3- R1。
In the outer contour lines of the cross section of the working cavity, a first arc line is connected between a first curve and a sixth curve, a second arc line is connected between a second curve and a third curve, a third arc line is connected between a fourth curve and a fifth curve, the first curve is connected with the second curve, the third curve is connected with the fourth curve, the fifth curve is connected with the sixth curve, the first, second and third arc lines are arc lines taking the axis of a rotor as the center of a circle, the outer contour line of the cross section of the working cavity is a rotationally symmetric graph taking the center point of the cross section of the rotor as the center of rotational symmetry and taking the rotation angle as 120 degrees, and in a plane rectangular coordinate system taking the center point as the origin, the first arc line and the second arc line, the first curve and the second curve, the third curve and the sixth curve, and the fourth curve and the fifth curve are respectively symmetric relative to a longitudinal coordinate axis;
the equation for the first curve is:
（x-a）2+（y-b）2- R1 2=0, wherein 0 ≦ x ≦ a · R3/（R3- R1），b·R3/（R3- R1）≤y≤（R1+b）；
The equation for the second curve is:
（x+a）2+（y-b）2- R1 2=0, wherein-a · R3/（R3- R1）≤x≤0，b·R3/（R3- R1）≤y≤（R1+b）；
In the above formulae, a = R1·(1-(( R2 2+2·R1·R3- R3 2)/(2·R1·R2))2)1/2，
b=( R2 2-2·R1·R3+R3 2)/(2·R2)。
Wherein R is1Is the distance between the axis of the planetary roller and the axis of the rotor, R2Radius of the rotor, R3The radius of the first, second and third circular arc lines in the outer contour line of the cross section of the working cavity.
The planetary rollers are in running fit with the cavity grooves in the cavity grooves, and two end faces of the planetary rollers are attached to two end faces of the cavity grooves and two side faces of the grooves.
And when the rotor rotates, the three planetary rollers only do circular translation motion without rotation relative to the stator under the action of the planetary roller synchronous control mechanism.
Three fluid inlets and three fluid outlets which are communicated with the working cavity are formed in the stator, through openings of the three fluid inlets in the inner wall of the stator are respectively positioned on one side of a curved surface of the inner wall of the stator corresponding to a first curve near a crest line of the inner wall of the stator corresponding to a connection point of the first curve and a second curve, one side of a curved surface of the inner wall of the stator corresponding to a third curve near a crest line of the inner wall of the stator corresponding to a connection point of a third curve and a fourth curve, and one side of a curved surface of the inner wall of the stator corresponding to a fifth curve near a crest line of the inner wall of the stator corresponding to a connection point of a fifth curve and a sixth curve; the through holes of the three fluid outlets on the inner wall of the stator are respectively positioned on one side of the curved surface of the inner wall of the stator corresponding to a second curve near the edge line of the inner wall of the stator corresponding to the connection point of a first curve and a second curve, one side of the curved surface of the inner wall of the stator corresponding to a fourth curve near the edge line of the inner wall of the stator corresponding to the connection point of a third curve and a fourth curve, and one side of the curved surface of the inner wall of the stator corresponding to a sixth curve near the edge line of the inner wall of the stator corresponding to the connection point of a fifth curve and a sixth curve.
The through holes of the fluid inlet on the inner wall of the stator are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the first curve, the third curve and the fifth curve; and the through holes of the fluid outlet on the inner wall of the stator are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the second curve, the fourth curve and the sixth curve.
The group of fluid inlets and the group of fluid outlets which are positioned on the stator inner wall curved surface corresponding to the first curve and the second curve, the group of fluid inlets and the group of fluid outlets which are positioned on the stator inner wall curved surface corresponding to the third curve and the fourth curve, and the group of fluid inlets and the group of fluid outlets which are positioned on the stator inner wall curved surface corresponding to the fifth curve and the sixth curve can be simultaneously and respectively covered by the planetary roller curved surfaces corresponding to the seventh curve, the eighth curve and the ninth curve.
Alternatively, the through openings of the fluid inlet and the fluid outlet on the inner wall of the stator can also be positioned on the inner wall of the end part of the stator.
Further, when the rotor rotates to the position that the ridge line of the inner wall of the stator is in contact with the curved surface of the planetary roller corresponding to the seventh curve, the eighth curve and the ninth curve, the three fluid inlets and the three fluid outlets can be simultaneously communicated with six closed spaces formed between the curved surface of the planetary roller and the inner wall of the stator respectively.
The planetary roller synchronous control mechanism comprises a central gear, three synchronous gears and three intermediate gears, wherein the central gear is fixed on the stator and is coaxial with the rotor, the synchronous gears are respectively fixed at one end of the roller shaft, the intermediate gears are rotatably arranged on the end face of the rotor and are respectively positioned between the central gear and the synchronous gears, and each intermediate gear is simultaneously meshed with the central gear and one synchronous gear.
Energy conversion device owing to have this kind of structure, can realize the energy conversion of following mode smoothly:
firstly, after high-pressure fluid enters and exits through the fluid inlet and the fluid outlet, the rotor can be driven to rotate, and therefore the energy of the fluid is converted into output power (such as a steam turbine, a water turbine, a pneumatic motor and a hydraulic motor).
And secondly, in the process that mechanical power drives the rotor to rotate through the rotor shaft, the volume of the working cavity is changed, fluid enters the working cavity from the fluid inlet under the action of negative pressure and is discharged from the fluid outlet under the pushing action of the planetary rollers, and therefore mechanical energy is converted into fluid kinetic energy to achieve fluid conveying (such as a compressor, a hydraulic pump, a vacuum pump and a blower).
The energy conversion device realizes energy conversion through the change of the fluid volume, has simple structure, good fluid sealing performance and high energy conversion efficiency, and the rotor rotates coaxially relative to the stator, so the vibration and the noise are low. In the rotation process of the rotor, six vertex angle ridge lines of the planetary roller are only in contact with the curved surfaces corresponding to the first curve, the second curve, the third curve, the fourth curve, the fifth curve and the sixth curve of the inner wall of the stator respectively, so that the planetary roller is small in abrasion.
Drawings
Fig. 1 is a schematic sectional view along the rotor shaft according to the present invention.
Fig. 2 is a schematic sectional view taken along line a-a in fig. 1.
Fig. 3 is a schematic cross-sectional view taken along line C-C in fig. 1.
Fig. 4 to 8 are schematic views illustrating a process in which the rotor rotates 120 ° clockwise in the stator in the energy conversion device shown in fig. 2.
Fig. 9 is a schematic cross-sectional contour line diagram of the stator, the rotor and the planetary rollers when one of the planetary rollers is located on the ordinate axis.
Fig. 10 is a schematic cross-sectional view of the planetary rollers in the energy conversion device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the energy conversion device based on the fluid volume change comprises a stator 1 and a rotor 6 positioned in the inner cavity of the stator 1, wherein the rotor 6 is rotatably supported at two ends of the stator 1 through a rotor shaft 7, the rotor 6 is cylindrical, which is coaxially and rotatably matched with the inner cavity of the stator in the inner cavity of the stator 1, a groove 9 is arranged on the wall of the cylindrical inner cavity of the stator 1 which is rotatably matched with the rotor 6 along the circumferential direction, so that a closed working cavity 12 is formed between the stator 1 and the rotor 6, the inner contour line of the cross section of the working cavity 12 is a circle which takes the axle center of the rotor 6 as the center of a circle and the radius of the rotor 6 as the radius, the outer contour line of the cross section of the working cavity 12 is a closed line formed by connecting a first arc line 22, a second arc line 16, a third arc line 19, a first curve 14, a second curve 15, a third curve 17, a fourth curve 18, a fifth curve 20 and a sixth curve 21. As shown in fig. 9, the first arc line 22 is an arc line B1B6The second circular arc line 16 is a circular arc line B2B3The third circular arc line 19 is a circular arc line B4B5The first curve 14 is a curve M1B1The second curve 15 is a curve M1B2The third curve 17 is a curve M2B3The fourth curve 18 is curve M2B4The fifth curve 20 is the curve M3B5The sixth curve 21 is the curve M3B6. Three cavity grooves 13 are axially formed in the cylindrical surface of the rotor 6, the three cavity grooves 13 form an angle of 120 degrees with each other in the circumferential direction of the rotor, the outline of the cross section of each cavity groove 13 is an arc line, two end faces of each cavity groove 13 are respectively flush with two side faces of the corresponding groove 9, planetary rollers 8 are arranged in the cavity grooves 13, the planetary rollers 8 are rotatably supported at two ends of the rotor 6 through roller shafts 2, and the planetary rollers 8 and the cavity grooves 13 are coaxial. As shown in fig. 9 and 10, the contour line of the cross section of the planetary roller 8 is a closed line formed by connecting a fourth circular arc line 28, a fifth circular arc line 24, a sixth circular arc line 26, a seventh curved line 23, an eighth curved line 25, and a ninth curved line 27, and the fourth circular arc line 28 is a closed lineArc line D1D6The fifth circular arc line 24 is a circular arc line D2D3The sixth circular arc line 26 is a circular arc line D4D5The seventh curve 23 is a curve D1D2The eighth curve 25 is the curve D3D4The ninth curve 27 is a curve D5D6The contour line is a rotational symmetry figure with a central point of a cross section of the planetary roller as a rotational symmetry center and a rotation angle of 120 degrees, and in a plane rectangular coordinate system with the central point as an origin (a horizontal dotted line in fig. 10 is an abscissa axis, and a vertical dotted line is an ordinate axis), the fourth arc line 28 and the fifth arc line 24 are symmetrical with respect to the ordinate axis, the eighth curve 25 and the ninth curve 27 are symmetrical with respect to the ordinate axis, and the equation of the seventh curve 23 is as follows:
x2+( R2-y)2- R1 2=0, wherein-a ≦ x ≦ a, (R)2- R1）≤y≤b。
The radiuses of the fourth, fifth and sixth circular arc lines 28, 24 and 26 are consistent with the radius of the cross-section contour line of the cavity groove 13 and are R3- R1。
As shown in fig. 9, in the outer contour line of the cross section of the working chamber 12, a first circular arc line 22 is connected between the first curve 14 and the sixth curve 21, and two end points of the first circular arc line 22 are B1Points and B6Point; the second arc line 16 is connected between the second curve 15 and the third curve 17, and two end points of the second arc line 16 are B2Points and B3Point; the third arc line 19 is connected between the fourth curve 18 and the fifth curve 20, and two end points of the third arc line 19 are B4Points and B5And (4) point. The first curve 14 and the second curve 15 are connected to M1At the point, the third curve 17 and the fourth curve 18 are connected to M2Point, the fifth curve 20 and the sixth curve 21 are connected to M3And (4) point. The first, second, and third circular arc lines 22, 16, and 19 are circular arc lines having the axis of the rotor 6 as the center of a circle, and the outer contour line of the cross section of the working chamber is a rotationally symmetric pattern having the center point of the cross section of the rotor as the rotationally symmetric center and a rotation angle of 120 °, and are set in a planar rectangular coordinate system (see fig. 10) having the center point as the originThe horizontal dotted line is an abscissa axis, the vertical dotted line is an ordinate axis), and the first arc line and the second arc line, the first curve and the second curve, the third curve and the sixth curve, and the fourth curve and the fifth curve are respectively symmetrical with respect to the ordinate axis.
The equation for the first curve 16 is:
（x-a）2+（y-b）2- R1 2=0, wherein 0 ≦ x ≦ a · R3/（R3- R1），b·R3/（R3- R1）≤y≤（R1+b）；
The equation for the second curve 21 is:
（x+a）2+（y-b）2- R1 2=0, wherein-a · R3/（R3- R1）≤x≤0，b·R3/（R3- R1）≤y≤（R1+b）；
That is to say M1The horizontal coordinate of the point is 0, and the vertical coordinate is R2(ii) a The abscissa of the point B1 is a.R3/（R3- R1) Ordinate is b.R3/（R3- R1) (ii) a The abscissa of the point B2 is-a.R3/（R3- R1) Ordinate is b.R3/（R3- R1）。
In the above formulae, a = R1·(1-(( R2 2+2·R1·R3- R3 2)/(2·R1·R2))2)1/2，
b=( R2 2-2·R1·R3+R3 2)/(2·R2);
Wherein R is1Is the distance between the axis of the planetary roller 8 and the axis of the rotor 6, R2Radius of rotor 6, R3The radii of the first, second and third circular arc lines 22, 16, 19 in the outer contour line of the cross section of the working chamber 12.
The planetary rollers 8 are in running fit with the cavity grooves in the cavity grooves 13, and two end faces of the planetary rollers 8 are attached to two end faces of the cavity grooves 13 and two side faces of the grooves 9.
As shown in fig. 9, the seventh curve 23 is actually a connection point M of the first curve 14 and the second curve 151Points are marked on the trajectory line drawn on the cross section of the planetary roller 8; the eighth curve 25 is a connection point M of the third curve 17 and the fourth curve 182Points are marked on the trajectory line drawn on the cross section of the planetary roller 8; the ninth curve 27 is the connection point M of the fifth curve 20 and the sixth curve 213The point is the trajectory line drawn on the cross section of the planetary roller 8. The first curve 14 is a connection point D of the seventh curve 23 and the fourth arc line 281A track line drawn on the bottom surface of the groove 9 of the stator 1; the second curve 15 is a connection point D of the seventh curve 23 and the fifth arc line 242A track line drawn on the bottom surface of the groove 9 of the stator 1; the third curve 17 is a connection point D of the eighth curve 25 and the fifth arc line 243A track line drawn on the bottom surface of the groove 9 of the stator 1; the fourth curve 18 is a connection point D of the eighth curve 25 and the sixth arc line 264A track line drawn on the bottom surface of the groove 9 of the stator 1; the fifth curve 20 is the connection point D of the ninth curve 27 and the sixth circular arc 265A track line drawn on the bottom surface of the groove 9 of the stator 1; the sixth curve 21 is a connection point D of the ninth curve 27 and the fourth arc line 286A track line drawn on the bottom surface of said groove 9 of the stator 1.
As shown in fig. 1 and 3, a planetary roller synchronization control mechanism is provided on the end face side of the rotor 6, the planetary roller synchronization control mechanism includes a sun gear 3, three synchronizing gears 5 and three intermediate gears 4, the sun gear 3 is fixed on the stator 1 and is coaxial with the rotor 6, the synchronizing gears 5 are respectively fixed on one end of the roller shaft 2, the intermediate gears 4 are rotatably mounted on the end face of the rotor 1 and are respectively located between the sun gear 3 and the synchronizing gears 5, and each intermediate gear 4 is simultaneously meshed with the sun gear 3 and one synchronizing gear 5, when the rotor 6 rotates, the three planetary rollers 8 only do a circular translational motion without rotation relative to the stator 1 under the action of the planetary roller synchronization control mechanism. Or, under the action of the planetary roller synchronous control mechanism, the three planetary rollers 8 rotate in the same rotating speed and opposite directions relative to the rotor 6.
As shown in fig. 2, three fluid inlets 11 and three fluid outlets 10 communicated with the working chamber 12 are formed in the stator 1, through openings of the three fluid inlets 11 in the inner wall of the stator 1 are respectively located on curved surfaces of the inner wall of the stator corresponding to the first, third and fifth curves (14, 17 and 20), and through openings of the three fluid outlets 10 in the inner wall of the stator are respectively located on curved surfaces of the inner wall of the stator corresponding to the second, fourth and sixth curves (15, 18 and 21). A set of fluid inlet 11 and fluid outlet 10 located on the curved surface of the inner wall of the stator corresponding to the first curve 14 and the second curve 15, a set of fluid inlet 11 and fluid outlet 10 located on the curved surface of the inner wall of the stator corresponding to the third curve 17 and the fourth curve 18, and a set of fluid inlet 11 and fluid outlet 10 located on the curved surface of the inner wall of the stator corresponding to the fifth curve 20 and the sixth curve 21 can be simultaneously covered by the curved surface of the planetary roller corresponding to the seventh curve 23, the eighth curve 25, and the ninth curve 27, respectively, so that none of the three fluid inlets 11 and three fluid outlets 10 can be directly communicated with each other, and fluid leakage caused by direct communication between the fluid inlets and the fluid outlets can be avoided (the through holes of the three fluid inlets 11 and the three fluid outlets 10 on the inner wall of the stator can also be located on the inner wall of the end of the stator, when the rotor 6 rotates to the edge line of the inner wall of the stator and the seventh curve 23, When the curved surfaces of the planetary rollers corresponding to the eighth curve 25 and the ninth curve 27 contact, that is, the positions shown in fig. 2 and the positions close to the curved surfaces, the three fluid inlets 11 and the three fluid outlets 10 can be simultaneously communicated with the six sealed spaces formed between the curved surfaces of the planetary rollers and the inner wall of the stator).
Fig. 4 to 8 show the state of the rotor 6 during a 120 ° clockwise rotation in the stator 1, and in connection with fig. 9, during a one-turn rotation of the rotor 6 in the stator 1, D1The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the first curve 14, D2The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the second curve 15, D3The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the third curve 17, D4The vertex angle ridge of the planetary roller 8 corresponding to the point is in contact with only the curved surface corresponding to the fourth curve 18, D5The vertex angle ridge of the corresponding planetary roller 8 is in contact with only the curved surface corresponding to the fifth curve 20, D6The apex angular edge of the corresponding planetary roller 8 is in contact with only the curved surface corresponding to the sixth curve 21. The arc surface of the planetary roller 8 corresponding to the fourth arc line 28 contacts only the arc surface of the inner wall of the stator 1 corresponding to the first arc line 22, the arc surface of the planetary roller 8 corresponding to the fifth arc line 24 contacts only the arc surface of the inner wall of the stator 1 corresponding to the second arc line 16, and the arc surface of the planetary roller 8 corresponding to the sixth arc line 26 contacts only the arc surface of the inner wall of the stator 1 corresponding to the third arc line 19. M1The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planet roller 8 corresponding to the seventh curve 23, M2The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planetary roller 8 corresponding to the eighth curve 25, M3The inner wall ridge of the stator 1 corresponding to the point is contacted with the cylindrical surface of the rotor 6 and also contacted with the curved surface of the planetary roller 8 corresponding to the ninth curve 27.
After the high-pressure fluid enters the inner cavity of the stator 1 through the three fluid inlets 11, the high-pressure fluid applies pressure to the three planetary rollers 8, so as to drive the rotor 6 to rotate, as shown in fig. 4 to 8, in the rotation process of the rotor 6, the three planetary rollers 8 continuously discharge the fluid in the working cavity 12 from the three fluid outlets 10, so that the energy of the fluid is converted into output power, such as a steam turbine, a water turbine, a pneumatic motor, a hydraulic motor and the like.
When the mechanical power drives the rotor 6 to rotate through the rotor shaft 7, the volume of the working chamber 12 changes, as shown in fig. 4 to 8, fluid enters the working chamber 12 from the three fluid inlets 11 under the action of negative pressure and is discharged from the three fluid outlets 10 under the pushing action of the planetary rollers 8, so that the mechanical energy is converted into the kinetic energy of the fluid to realize the fluid transportation, such as a compressor, a hydraulic pump, a vacuum pump, a blower and the like.

Claims (6)

1. An energy conversion device based on fluid volume change, comprising a stator (1) and a rotor (6) located in the inner cavity of the stator, the rotor being rotatably supported at both ends of the stator by a rotor shaft (7), characterized in that: the rotor is cylindrical, the rotor is coaxially and rotatably matched with the inner cavity of the stator in the inner cavity of the stator, a groove (9) is formed in the wall of the cylindrical inner cavity of the stator rotatably matched with the rotor along the circumferential direction, so that a closed working cavity (12) is formed between the stator and the rotor, the inner contour line of the cross section of the working cavity is a circle which takes the axis of the rotor as the center of the circle and the radius of the rotor as the radius, and the outer contour line of the cross section of the working cavity is a closed line formed by connecting a first arc line (22), a second arc line (16), a third arc line (19), a first curve (14), a second curve (15), a third curve (17), a fourth curve (18), a fifth curve (20) and a sixth curve (21); three cavity grooves (13) are axially arranged on a cylindrical surface of a rotor, the three cavity grooves form 120 degrees in the circumferential direction of the rotor, the contour lines of the cross sections of the cavity grooves are arc lines, two end surfaces of the cavity grooves are respectively flush with two side surfaces of the groove, planetary rollers (8) are arranged in the cavity grooves, the planetary rollers are rotatably supported at two ends of the rotor through roller shafts (2), the planetary rollers are coaxial with the cavity grooves, the contour lines of the cross sections of the planetary rollers are closed lines formed by connecting a fourth arc line (28), a fifth arc line (24), a sixth arc line (26), a seventh curve (23), an eighth curve (25) and a ninth curve (27), a rotational symmetry figure with the central point of the cross section of the planetary roller as a rotational symmetry center and a rotation angle of 120 degrees is used, and in a plane rectangular coordinate system with the central point as an origin, the fourth arc line and the fifth arc line, the eighth curve and the ninth curve are symmetrical relative to the coordinate axis, the equation for the seventh curve is:
x2+( R2-y)2- R1 2=0, wherein-a ≦ x ≦ a, (R)2- R1）≤y≤b;
The radius of the fourth, fifth and sixth arc lines is consistent with that of the contour line of the cross section of the cavity groove and is R3- R1；
In the outer contour lines of the cross section of the working cavity, a first arc line is connected between a first curve and a sixth curve, a second arc line is connected between a second curve and a third curve, a third arc line is connected between a fourth curve and a fifth curve, the first curve is connected with the second curve, the third curve is connected with the fourth curve, the fifth curve is connected with the sixth curve, the first, second and third arc lines are arc lines taking the axis of a rotor as the center of a circle, the outer contour line of the cross section of the working cavity is a rotationally symmetric graph taking the center point of the cross section of the rotor as the center of rotational symmetry and taking the rotation angle as 120 degrees, and in a plane rectangular coordinate system taking the center point as the origin, the first arc line and the second arc line, the first curve and the second curve, the third curve and the sixth curve, and the fourth curve and the fifth curve are respectively symmetric relative to a longitudinal coordinate axis;
the equation for the first curve is:
（x-a）2+（y-b）2- R1 2=0, wherein 0 ≦ x ≦ a · R3/（R3- R1），b·R3/（R3- R1）≤y≤（R1+b）;
The equation for the second curve is:
（x+a）2+（y-b）2- R1 2=0, wherein-a · R3/（R3- R1）≤x≤0，b·R3/（R3- R1）≤y≤（R1+b）;
In the above formulae, a = R1·(1-(( R2 2+2·R1·R3- R3 2)/(2· R1·R2))2)1/2,
b=( R2 2-2·R1·R3+R3 2)/(2·R2);
Wherein R is1Is the distance between the axis of the planetary roller and the axis of the rotor, R2Radius of the rotor, R3The radius of a first arc line, a second arc line and a third arc line in the outer contour line of the cross section of the working cavity;
the planetary rollers are in running fit with the cavity grooves in the cavity grooves, and two end faces of the planetary rollers are attached to two end faces of the cavity grooves and two side faces of the grooves;
a planetary roller synchronous control mechanism is arranged on the end face side of the rotor (6), and when the rotor rotates, under the action of the planetary roller synchronous control mechanism, three planetary rollers (8) only do circular translation motion without rotation relative to the stator (1);
three fluid inlets (11) and three fluid outlets (10) which are communicated with the working cavity are formed in the stator, through holes of the three fluid inlets (11) in the inner wall of the stator are respectively positioned on one side of a curved surface of the inner wall of the stator corresponding to a first curve near a crest line of the inner wall of the stator corresponding to a connection point of a first curve (14) and a second curve (15), one side of a curved surface of the inner wall of the stator corresponding to a third curve near a crest line of the inner wall of the stator corresponding to a connection point of a third curve (17) and a fourth curve (18), and one side of a curved surface of the inner wall of the stator corresponding to a fifth curve near a crest line of the inner wall of the stator corresponding to a connection point of a fifth curve (20) and a sixth curve (21); the through holes of the three fluid outlets (10) on the inner wall of the stator are respectively positioned on the side of the curved surface of the inner wall of the stator corresponding to a second curve near the edge line of the inner wall of the stator corresponding to the connection point of a first curve (14) and a second curve (15), on the side of the curved surface of the inner wall of the stator corresponding to a fourth curve near the edge line of the inner wall of the stator corresponding to the connection point of a third curve (17) and a fourth curve (18), and on the side of the curved surface of the inner wall of the stator corresponding to a sixth curve near the edge line of the inner wall of the stator corresponding to the connection point of a fifth curve (20) and a sixth curve (21).
2. The energy conversion device based on the change in volume of the fluid according to claim 1, wherein: through openings of the fluid inlet (11) on the inner wall of the stator (1) are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the first curve (14), the third curve (17) and the fifth curve (20); and the through holes of the fluid outlet (10) on the inner wall of the stator are respectively positioned on the curved surfaces of the inner wall of the stator corresponding to the second curve (15), the fourth curve (18) and the sixth curve (21).
3. The energy conversion device based on the change in volume of the fluid according to claim 2, wherein: and a group of fluid inlet (11) and a group of fluid outlet (10) which are positioned on the curved surface of the inner wall of the stator corresponding to the first curve (14) and the second curve (15), a group of fluid inlet and a group of fluid outlet which are positioned on the curved surface of the inner wall of the stator corresponding to the third curve (17) and the fourth curve (18), and a group of fluid inlet and a group of fluid outlet which are positioned on the curved surface of the inner wall of the stator corresponding to the fifth curve (20) and the sixth curve (21) can be simultaneously and respectively covered by the curved surfaces of the planetary rollers corresponding to the seventh curve (23), the eighth curve (25) and the ninth curve (27).
4. The energy conversion device based on the change in volume of the fluid according to claim 1, wherein: and through openings of the fluid inlet (11) and the fluid outlet (10) on the inner wall of the stator (1) are positioned on the inner wall of the end part of the stator.
5. The energy conversion device based on the change in volume of the fluid according to claim 4, wherein: when the rotor (6) rotates until the ridge line of the inner wall of the stator contacts with the curved surface of the planetary roller corresponding to the seventh curve (23), the eighth curve (25) and the ninth curve (27), the three fluid inlets (11) and the three fluid outlets (10) can be simultaneously communicated with six closed spaces formed between the curved surface of the planetary roller and the inner wall of the stator respectively.
6. The energy conversion device based on the change in volume of the fluid according to claim 1, wherein: the planetary roller synchronous control mechanism comprises a central gear (3), three synchronous gears (5) and three intermediate gears (4), wherein the central gear is fixed on the stator (1) and is coaxial with the rotor (6), the synchronous gears are respectively fixed at one end of the roller shaft (2), the intermediate gears are rotatably arranged on the end face of the rotor and are respectively positioned between the central gear and the synchronous gears, and each intermediate gear is simultaneously meshed with the central gear and one synchronous gear.
CN201921245996.7U 2019-08-03 2019-08-03 Energy conversion device based on fluid volume change Expired - Fee Related CN210422767U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921245996.7U CN210422767U (en) 2019-08-03 2019-08-03 Energy conversion device based on fluid volume change

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921245996.7U CN210422767U (en) 2019-08-03 2019-08-03 Energy conversion device based on fluid volume change

Publications (1)

Publication Number Publication Date
CN210422767U true CN210422767U (en) 2020-04-28

Family

ID=70386238

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921245996.7U Expired - Fee Related CN210422767U (en) 2019-08-03 2019-08-03 Energy conversion device based on fluid volume change

Country Status (1)

Country Link
CN (1) CN210422767U (en)

Similar Documents

Publication Publication Date Title
US8784087B2 (en) Roots type fluid machine
CN103953395A (en) Hydrodynamic force machine with rotating wheel slewing mechanism
CN110307079A (en) Energy conversion device based on fluid displacement variation
CN210422767U (en) Energy conversion device based on fluid volume change
CN210422765U (en) Energy conversion device based on fluid volume change
CN102410221B (en) Double-cylinder rotary compressor
RU2547211C2 (en) Dry screw compressor
CN103821715A (en) Translational rotation type compression machinery
WO2023280183A1 (en) Cavity-dividing rotor volume mechanism
CN210460855U (en) Fluid energy conversion device and rotary engine
CN210509375U (en) Fluid energy conversion device and rotary engine
CN210422766U (en) Fluid energy conversion device and rotary engine
CN115143109A (en) Cylinder sealed rotor compressor, pump and motor
CN207454258U (en) A kind of air compressor of monodentate engagement positive displacement structure
CN107269529B (en) Rotary vane compressor
CN110307078A (en) Energy conversion device and rotary engine based on fluid displacement variation
CN212837965U (en) Energy conversion device based on fluid volume change
KR101488060B1 (en) Rotary motor for compressible media
EP1709310B1 (en) Improvements in intersecting vane machines
CN202545248U (en) Double-cylinder rotary compressor
CN110307080A (en) Energy conversion device and rotary engine based on fluid displacement variation
RU2282063C1 (en) Rotary machine
CN110307081A (en) Energy conversion device based on fluid displacement variation
CN219344967U (en) Cylindrical surface sealed rotor compressor
EP4306801A1 (en) Pumping system with inner scrolls

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200428

Termination date: 20210803

CF01 Termination of patent right due to non-payment of annual fee