CN114165290A - Turbine and vibrator applying same - Google Patents
Turbine and vibrator applying same Download PDFInfo
- Publication number
- CN114165290A CN114165290A CN202111484973.3A CN202111484973A CN114165290A CN 114165290 A CN114165290 A CN 114165290A CN 202111484973 A CN202111484973 A CN 202111484973A CN 114165290 A CN114165290 A CN 114165290A
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- Prior art keywords
- turbine
- arc surface
- arc
- concave
- convex
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D1/00—Non-positive-displacement machines or engines, e.g. steam turbines
- F01D1/34—Non-positive-displacement machines or engines, e.g. steam turbines characterised by non-bladed rotor, e.g. with drilled holes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a turbine, which comprises a wheel body, wherein a plurality of gear teeth are circumferentially arranged on the circumferential side of the wheel body, each gear tooth comprises a convex arc surface and a concave arc surface, and the convex arc surfaces and the concave arc surfaces are connected and combined to form a fish fin shape; and along the circumferential direction of the wheel body, between two adjacent wheel teeth, the tail end of the convex cambered surface of one wheel tooth is connected with the tail end of the concave cambered surface of the other wheel tooth. Compared with the prior art, the turbine has better performance in rotating speed, acceleration, exciting force and vibration frequency. The present invention also provides a vibrator using the turbine as described above, which has a larger exciting force and a higher vibration frequency than the prior art.
Description
Technical Field
The invention relates to the technical field of turbine vibrators, in particular to a turbine and a vibrator applying the same.
Background
In the prior art, a turbine generally adopts straight teeth like gear teeth, gas backflow is difficult to form when gas flows through the turbine, the turbine cannot well utilize power brought by gas flow, so that the performances of the turbine such as rotating speed, acceleration, exciting force, vibration frequency and the like are poor, the kinetic energy utilization rate of the turbine is low, and finally energy waste is caused.
Disclosure of Invention
The object of the present invention is to provide a turbine which overcomes the disadvantages of the prior art.
The turbine comprises a wheel body, wherein a plurality of gear teeth are circumferentially arranged on the circumferential side of the wheel body, each gear tooth comprises a convex arc surface and a concave arc surface, and the convex arc surfaces and the concave arc surfaces are connected and combined to form a fish fin shape; along the circumferential direction of the wheel body, between two adjacent wheel teeth, the tail end of the convex cambered surface of one wheel tooth is connected with the tail end of the concave cambered surface of the other wheel tooth; the convex arc surface and the concave arc surface are arranged in a circular arc surface shape.
Through the arrangement, when the airflow pushes the turbine, the corresponding airflow is input to the connecting position of the convex arc surface and the concave arc surface of the corresponding gear tooth, part of the airflow flows back in the opposite direction under the guidance of the concave arc surface and forms confluence with newly input gas, so that a convoluted airflow form is formed at the position of the concave arc surface, and the work is continuously performed on the concave arc surface; the other part of the airflow is guided by the convex cambered surface to form an arc-shaped flow direction to the other gear tooth, so that the front collision of the backflow gas with the concave cambered surface in the other gear tooth is avoided, and the kinetic energy loss of the rotary airflow in the corresponding concave cambered surface can be reduced; therefore, the rotating speed of the turbine is effectively propelled, the acceleration of the turbine is further improved, and higher vibration frequency and excitation force are generated.
Specifically, each gear tooth is arranged uniformly in the circumferential direction of the wheel body, and each gear tooth is arranged end to end in the circumferential direction of the wheel body. Through the arrangement, the stress on the circumferential side of the wheel body is more uniform, the backflow amount of gas can be increased, the rotating speed and the acceleration of the turbine are further increased, and higher vibration frequency and excitation force are generated.
Specifically, the arc angle range of the convex arc surface is 44 ° or less and 34 ° or more.
Specifically, the arc angle range of the concave arc surface is 181 ° or less and 156 ° or more.
Specifically, the arc angle of the convex arc surface is set to 40 °, and/or the arc angle of the concave arc surface is set to 171 °.
Specifically, between two adjacent gear teeth, the tail end of the convex arc surface of one gear tooth is connected with the tail end of the concave arc surface of the other gear tooth in a circular arc transition manner. After the gas flows through the convex cambered surface of the previous gear tooth, the gas can flow to the concave cambered surface of the next gear tooth to the maximum extent due to the arrangement of the transitional connection of the circular arcs, so that the thrust borne by the concave cambered surface is increased, the rotating speed and the acceleration of the turbine are further increased, and higher vibration frequency and excitation force are generated.
Specifically, in the same gear tooth, the convex arc surface and the concave arc surface are connected in a straight angle transition manner. Through the arrangement of the straight angle transition connection, gas is not easy to flow to the convex arc surface of the same gear tooth from the concave arc surface of the same gear tooth, and the gas can flow back to a greater extent, so that the gas and newly input gas converge mutually, work is continuously performed on the concave arc surface, the rotating speed and the acceleration of the turbine are further increased, and the vibration force and the vibration frequency of the turbine are improved.
Specifically, the arc length corresponding to the convex arc surface is greater than the arc length corresponding to the concave arc surface. The foregoing arrangement is more favorable for the backflow of gas.
Specifically, a first angle difference exists between a tangent of the convex arc surface and a tangent of the periphery of the wheel body; and/or a second angle difference exists between an angular bisector of the arc angle of the concave arc surface and a straight line from the axle center of the wheel body to the circle center corresponding to the concave arc surface. The foregoing arrangement is more advantageous for directing the gas back flow.
Specifically, the extension directions of the convex arc surface and the concave arc surface are the same as the axial direction of the wheel body. Through aforementioned setting, the teeth of a cogwheel atress is more even, avoids the inhomogeneous wearing and tearing inconsistent of the different positions of the teeth of a cogwheel that leads to of atress, influences the life of turbine.
Specifically, the equipartition sets up and is equipped with a plurality of through-holes on the terminal surface of wheel body, the through-hole is followed wheel body axial direction extends the setting. Through setting up the through-hole, set up the counterweight in the through-hole to balanced torque adapts to the demand when practical application.
The invention also provides a vibrator using the turbine.
The vibrator comprises a base body with an inner cavity, and the inner cavity is internally provided with a turbine.
By arranging the turbine in the seat body, the vibration frequency of the vibration actuator can be higher, the excitation force can be larger, and a better vibration effect can be achieved.
The invention has the beneficial effects that:
1. through the arrangement, when the airflow pushes the turbine, the corresponding airflow is input to the connecting position of the convex arc surface and the concave arc surface of the corresponding gear tooth, part of the airflow flows back in the opposite direction under the guidance of the concave arc surface and forms confluence with newly input gas, so that a rotary airflow form is formed at the position of the concave arc surface, and the work is continuously performed on the concave arc surface; the other part of the airflow forms an arc flow direction to the other gear tooth under the guidance of the convex arc surface, so that the front collision of the airflow reflowing to the concave arc surface in the other gear tooth is avoided, and the kinetic energy loss of the convoluted airflow in the corresponding concave arc surface can be reduced; therefore, the rotating speed of the turbine is effectively propelled, the acceleration of the turbine is further improved, and higher vibration frequency and excitation force are generated.
2. By arranging the turbine in the seat body, the vibration frequency of the vibration actuator can be higher, the excitation force can be larger, and a better vibration effect can be achieved.
Drawings
FIG. 1 is a schematic view of a turbine according to the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a side view of a turbine according to the present invention;
fig. 4 is a schematic view of a vibrator according to the present invention.
Description of reference numerals:
the wheel body 1, the tangent 101 of the convex arc surface, the tangent 102 of the circumferential side of the wheel body, the angular bisector 103 of the arc angle of the concave arc surface, the straight line 104 from the axis of the wheel body to the center of the circle corresponding to the concave arc surface, the gear teeth 11, the convex arc surface 111, the concave arc surface 112, the mounting hole 12, the through hole 13, the counterweight 14, the seat body 2, the inner cavity 20, the air inlet hole 21, the axis 210 of the air inlet channel, the air inlet channel 211, the air outlet hole 22, the axis 220 of the air outlet channel, the air outlet channel 221 and the fixing hole 23.
Detailed Description
In order to make the technical solution, the purpose and the advantages of the present invention more apparent, the present invention is further explained with reference to the accompanying drawings and embodiments.
Example 1 as shown in fig. 1 to 3:
the turbine comprises a wheel body 1, wherein a plurality of gear teeth 11 are circumferentially arranged on the circumferential side of the wheel body 1, each gear tooth 11 comprises a convex arc surface 111 and a concave arc surface 112, and the convex arc surfaces 111 and the concave arc surfaces 112 are connected and combined to form a fish fin shape; along the circumferential direction of the wheel body 1, between two adjacent wheel teeth 1, the tail end of the convex cambered surface 111 of one wheel tooth 1 is connected with the tail end of the concave cambered surface 112 of the other wheel tooth 1; the convex arc surface 111 and the concave arc surface 112 are arranged in a circular arc shape.
Through the arrangement, when the airflow pushes the turbine, the corresponding airflow is input to the connecting position of the convex arc surface 111 and the concave arc surface 112 of the corresponding gear tooth 11, part of the airflow flows back in the opposite direction under the guidance of the concave arc surface 112 and forms confluence with newly input gas, so that a convoluted airflow form is formed at the position of the concave arc surface 112, and the work is continuously performed on the concave arc surface 112; another part of the airflow is guided by the convex cambered surface 111 to form an arc-shaped flow direction to another gear tooth, so that the front collision of the backflow gas with the concave cambered surface 112 in the other gear tooth 1 is avoided, and the kinetic energy loss of the rotary airflow in the corresponding concave cambered surface 112 can be reduced; therefore, the rotating speed of the turbine is effectively propelled, the acceleration of the turbine is further improved, and higher vibration frequency and excitation force are generated.
Each gear tooth 11 is uniformly arranged on the circumferential side of the wheel body 1, and each gear tooth 11 is arranged end to end on the circumferential side of the wheel body 1 along the circumferential direction of the wheel body 1. Through the arrangement, the stress on the peripheral side of the wheel body 1 is more uniform, the backflow amount of gas can be increased, the rotating speed and the acceleration of the turbine are further increased, and higher vibration frequency and excitation force are generated.
Based on the actual application scenario, the working pressure is set to 0.2M Pa, and based on the actual processing requirement, the angle corresponding to the convex arc surface 111 takes 2 ° as the processing gradient unit, and the angle corresponding to the concave arc surface 112 takes 5 ° as the processing gradient unit, so that the turbine after each processing and the turbine in the prior art are tested, and the following test data shown in the attached table 1 are obtained:
attached table 1
As shown in attached table 1, when the arc angle range of the convex arc surface 111 is equal to or less than 44 ° and equal to or greater than 34 °, and the arc angle range of the concave arc surface 112 is equal to or less than 181 ° and equal to or greater than 156 °, under the working pressure of 0.2MPa, the turbine has significant effect improvement in rotation speed, acceleration, exciting force, and vibration frequency, compared with the turbine in the prior art; when the arc angle of the convex arc surface 111 is 46 degrees and the arc angle of the concave arc surface 112 is 186 degrees, the rotating speed, the acceleration, the exciting force and the vibration frequency of the turbine are obviously reduced and are lower than the rotating speed, the acceleration, the exciting force and the vibration frequency when the arc angle of the convex arc surface 111 is 34 degrees and the arc angle of the concave arc surface 112 is 156 degrees, so that the preferred processing range of the arc angle of the convex arc surface 111 from 34 degrees to 44 degrees is selected, and the preferred processing range of the arc angle of the concave arc surface 112 from 156 degrees to 181 degrees is selected.
Preferably, the arc angle of the convex arc surface 111 is set to 40 °, and the arc angle of the concave arc surface 112 is set to 171 °. As shown in table 1, when the arc angle of the convex arc surface 111 is 40 ° and the arc angle of the concave arc surface 112 is 171 °, the rotating speed, the acceleration, the exciting force, and the vibration frequency of the turbine reach the maximum values under the working pressure of 0.2MPa, so that 40 ° is selected as the preferred machining value of the angle corresponding to the convex arc surface 111, and 171 ° is selected as the preferred machining value of the angle corresponding to the concave arc surface 112.
Between two adjacent teeth 11, the end of the convex arc surface 111 of one tooth 11 is connected with the end of the concave arc surface 112 of the other tooth 11 in a circular arc transition. After the gas flows through the convex cambered surface 111 of the previous gear tooth 11, the gas can flow to the concave cambered surface 112 of the next gear tooth 11 to the maximum extent due to the arrangement of transitional connection of arcs, so that the thrust force borne by the concave cambered surface 112 is increased, the rotating speed and the acceleration of the turbine are further increased, and higher vibration frequency and excitation force are generated.
As shown in fig. 2, in the same gear tooth 11, the convex arc surface 111 and the concave arc surface 112 are connected in a straight angle transition. Through the arrangement of the flat angle transition connection, gas is not easy to flow from the concave arc surface 112 of the same gear tooth 11 to the convex arc surface 111 of the same gear tooth 11, and the gas can flow back to a greater extent, so that the gas and newly input gas are converged mutually, work is continuously applied to the concave arc surface 112, the rotating speed and the acceleration of the turbine are further increased, and the vibration force and the vibration frequency of the turbine are improved.
The arc length corresponding to the convex arc surface 111 is longer than the arc length corresponding to the concave arc surface 112; a first angle difference b is formed between a tangent 101 of the convex cambered surface 111 and a tangent 102 of the peripheral side of the wheel body 1; the angular bisector 103 of the arc angle of the concave arc surface 112 has a second angular difference c with the straight line 104 from the axis of the wheel body 1 to the center of the circle corresponding to the concave arc surface 112. The foregoing arrangement is more advantageous for directing the gas back flow.
The extending directions of the convex arc surface 111 and the concave arc surface 112 are the same as the axial direction of the wheel body 1. Through the aforesaid setting, the atress of teeth of a cogwheel 11 is more even, avoids the inhomogeneous wearing and tearing inconsistent of the different positions of teeth of a cogwheel 11 that leads to of atress, influences the life of turbine.
The terminal surface of wheel body 1 equipartition sets up and is equipped with a plurality of through-holes 13, and through-hole 13 extends the setting along wheel body 1 axial direction. Through setting up through-hole 13, set up counterweight 14 in through-hole 13 to the demand when the adaptation is actually used in the balanced moment.
The center of the end surface of the wheel body 1 is provided with a mounting hole 12 for connecting the rotating shaft in a penetrating way so as to be mounted in the vibrator.
Example 2 as shown in fig. 4:
the vibrator comprises a base body 2 with an inner cavity 20, wherein the inner cavity 20 is provided with a turbine applied as the embodiment 1.
Through set up this turbine in pedestal 2, the vibration frequency of local oscillator can be higher, exciting force can be bigger, plays better vibration effect.
Be equipped with inlet port 21, the venthole 22 of intercommunication inner chamber 20 on the pedestal 2, venthole 21 communicates inner chamber 20 through inlet channel 211, and venthole 22 communicates inner chamber 20 through outlet channel 221, and inlet channel 211's width is less than outlet channel 221's width, and inlet channel 211's width is less than the width of inlet port 21, plays the effect of compressed gas, further improves gaseous thrust.
Preferably, the air inlet 21 and the air outlet 22 are both arranged upward, and the axial line 210 of the air inlet channel 211 and the axial line 220 of the air outlet channel 221 are tangent to the peripheral side of the wheel body 1, so that the gear teeth 11 utilize the thrust of the air flow to the maximum extent, the rotating speed and the acceleration of the wheel body 1 are further increased, the exciting force and the vibration frequency of the local vibrator are increased, and a better vibration effect is achieved.
The two sides of the seat body 2 are also provided with fixing holes 23 for mounting and fixing in practical application.
The above description is only a preferred embodiment of the present invention, and those skilled in the art may still modify the described embodiment without departing from the implementation principle of the present invention, and the corresponding modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The turbine is characterized by comprising a wheel body, wherein a plurality of gear teeth are circumferentially arranged on the circumferential side of the wheel body, each gear tooth comprises a convex arc surface and a concave arc surface, and the convex arc surfaces and the concave arc surfaces are connected and combined to form a fish fin shape; and along the circumferential direction of the wheel body, between two adjacent wheel teeth, the tail end of the convex cambered surface of one wheel tooth is connected with the tail end of the concave cambered surface of the other wheel tooth.
2. The turbine according to claim 1, wherein each of the gear teeth is disposed circumferentially and uniformly on the circumferential side of the wheel body, and each of the gear teeth is disposed end to end on the circumferential side of the wheel body in the circumferential direction of the wheel body.
3. The turbine of claim 1, wherein the arc angle of the convex arc surface ranges from 44 ° or less to 34 ° or more.
4. The turbine of claim 1, wherein the arc angle of the concave arc surface ranges from 181 ° or less and 156 ° or more.
5. The turbine of claim 1, wherein the arc angle of the convex arc is set to 40 ° and/or the arc angle of the concave arc is set to 171 °.
6. The turbine of claim 1 wherein between two adjacent teeth, the end of the convex arc of one tooth is connected to the end of the concave arc of another tooth in a circular arc transition.
7. The turbine of claim 1 wherein said convex arcuate surface and said concave arcuate surface of said same gear tooth are joined in a straight angular transition.
8. The turbine of any one of claims 1 to 7, wherein the convex arc surface has an arc length greater than an arc length associated with the concave arc surface.
9. The turbine of any one of claims 1 to 7, wherein a tangent to the convex arc surface and a tangent to a circumferential side of the wheel body have a first angular difference therebetween; and/or a second angle difference exists between an angular bisector of the arc angle of the concave arc surface and a straight line from the axle center of the wheel body to the circle center corresponding to the concave arc surface.
10. Vibrator, characterized in that it comprises a body with an internal cavity in which a turbine according to any one of claims 1 to 9 is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111484973.3A CN114165290B (en) | 2021-12-07 | 2021-12-07 | Turbine and vibrator applying same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111484973.3A CN114165290B (en) | 2021-12-07 | 2021-12-07 | Turbine and vibrator applying same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114165290A true CN114165290A (en) | 2022-03-11 |
| CN114165290B CN114165290B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111484973.3A Active CN114165290B (en) | 2021-12-07 | 2021-12-07 | Turbine and vibrator applying same |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930394A (en) * | 2004-03-18 | 2007-03-14 | 弗兰克·丹尼尔·洛特里翁特 | Turbine and rotor therefor |
| CN102171413A (en) * | 2008-08-12 | 2011-08-31 | 西门子能源公司 | Canted outlet for transition in a gas turbine engine |
| CN103796762A (en) * | 2011-11-04 | 2014-05-14 | 日本精工株式会社 | Spindle device and electrostatic coating device |
| CN106015517A (en) * | 2016-07-20 | 2016-10-12 | 方年学 | Curvilinear-tooth point-line meshing gear and processing method thereof |
| CN109477417A (en) * | 2016-12-21 | 2019-03-15 | 三菱重工发动机和增压器株式会社 | The nozzle vane and turbine of turbocharger, turbocharger |
| CN111102063A (en) * | 2019-11-15 | 2020-05-05 | 车行天下网络科技股份有限公司 | Dual drive turbine |
| CN112523809A (en) * | 2020-11-30 | 2021-03-19 | 北京动力机械研究所 | Method for inhibiting unsteady airflow excitation force of turbine rotor blade |
| CN113339075A (en) * | 2021-06-15 | 2021-09-03 | 深圳朴坂科技有限公司 | Bladeless turbine with low input requirement and disc body thereof |
-
2021
- 2021-12-07 CN CN202111484973.3A patent/CN114165290B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1930394A (en) * | 2004-03-18 | 2007-03-14 | 弗兰克·丹尼尔·洛特里翁特 | Turbine and rotor therefor |
| CN102171413A (en) * | 2008-08-12 | 2011-08-31 | 西门子能源公司 | Canted outlet for transition in a gas turbine engine |
| CN103796762A (en) * | 2011-11-04 | 2014-05-14 | 日本精工株式会社 | Spindle device and electrostatic coating device |
| CN106015517A (en) * | 2016-07-20 | 2016-10-12 | 方年学 | Curvilinear-tooth point-line meshing gear and processing method thereof |
| CN109477417A (en) * | 2016-12-21 | 2019-03-15 | 三菱重工发动机和增压器株式会社 | The nozzle vane and turbine of turbocharger, turbocharger |
| CN111102063A (en) * | 2019-11-15 | 2020-05-05 | 车行天下网络科技股份有限公司 | Dual drive turbine |
| CN112523809A (en) * | 2020-11-30 | 2021-03-19 | 北京动力机械研究所 | Method for inhibiting unsteady airflow excitation force of turbine rotor blade |
| CN113339075A (en) * | 2021-06-15 | 2021-09-03 | 深圳朴坂科技有限公司 | Bladeless turbine with low input requirement and disc body thereof |
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| CN114165290B (en) | 2023-07-25 |
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