CN219795385U - Radial sealing structure of triangular rotor engine and triangular rotor engine - Google Patents
Radial sealing structure of triangular rotor engine and triangular rotor engine Download PDFInfo
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- CN219795385U CN219795385U CN202321273305.0U CN202321273305U CN219795385U CN 219795385 U CN219795385 U CN 219795385U CN 202321273305 U CN202321273305 U CN 202321273305U CN 219795385 U CN219795385 U CN 219795385U
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- radial sealing
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- roller mounting
- oil storage
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- 238000007789 sealing Methods 0.000 title claims abstract description 149
- 238000003860 storage Methods 0.000 claims abstract description 44
- 239000003921 oil Substances 0.000 claims description 44
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 abstract description 8
- 239000013585 weight reducing agent Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013010 performance trimming Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a radial sealing structure of a triangular rotor engine and the triangular rotor engine, and belongs to the technical field of engines. The radial sealing structure comprises a radial sealing piece, a first needle roller and a second needle roller; the outer side end surface of the radial sealing piece is a radial sealing cambered surface, and a first needle roller mounting hole, a second needle roller mounting hole, a first oil storage hole and a second oil storage hole which are respectively communicated with the upper end surface and the lower end surface of the radial sealing piece are formed in the outer side end of the radial sealing piece; the first needle roller and the second needle roller are coaxially arranged in the first needle roller mounting hole and the second needle roller mounting hole respectively and can rotate respectively; the first needle roller mounting hole and the second needle roller mounting hole are arc slotted holes with openings, and the first needle roller and the second needle roller form a sealing section cambered surface through the openings; the radial sealing piece is connected with the part to be sealed through the inner side end. The utility model can reduce the abrasion of the sealing structure and improve the sealing performance, thereby improving the efficiency and the service life of the engine.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to a radial sealing structure of a rotor engine and the rotor engine.
Background
In recent years, a micro power system with small volume, high power-weight ratio and stable and reliable operation has been developed as a research field at home and abroad, and compared with a piston type four-stroke engine with the same displacement, a rotor engine has the advantages of simple and compact structure, high power-weight ratio, small noise and vibration, good fuel adaptability, easy microminiaturization and the like, and has been widely applied to power systems of unmanned aerial vehicles, military equipment, small auxiliary generator devices and the like.
However, compared with the traditional piston engine, the sealing performance of the rotor engine still has a larger gap, when the rotor engine runs at a high speed, the rotor engine is mainly sealed through the line contact between the radial sealing component on the rotor and the molded surface of the cylinder, and the current small rotor engine sealing piece has simpler structure and lubrication defect, so that the radial sealing piece continuously moves in the cylinder and is severely worn, therefore, the sealing piece cannot be tightly attached to the end surface and the sealing groove, and serious leakage is inevitably caused.
Disclosure of Invention
Based on the problems of structure, lubrication, abrasion and the like of the conventional radial sealing piece, the utility model provides the radial sealing structure of the triangular rotor engine and the triangular rotor engine, the structure and the lubrication mode of the radial sealing piece are improved, and the sealing performance and the service life of equipment are improved.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a radial sealing structure of a triangular rotor engine, which comprises a radial sealing piece, a first needle roller and a second needle roller;
the outer side end surface of the radial sealing piece is a radial sealing cambered surface, and a first needle roller mounting hole, a second needle roller mounting hole, a first oil storage hole and a second oil storage hole which are respectively communicated with the upper end surface and the lower end surface of the radial sealing piece are formed in the outer side end of the radial sealing piece; the circle center of the first needle roller mounting hole is positioned in the middle of the radial sealing cambered surface, and the two second needle roller mounting holes are symmetrically arranged on two sides of the first needle roller mounting hole; the first needle roller and the second needle roller are coaxially arranged in the first needle roller mounting hole and the second needle roller mounting hole respectively and can rotate in the first needle roller mounting hole and the second needle roller mounting hole respectively; the first needle roller mounting holes and the second needle roller mounting holes are arc slotted holes with openings, and the first needle roller and the second needle roller form a sealing section cambered surface through the openings; the first oil storage hole is communicated with the first needle roller mounting hole, the second oil storage hole is communicated with the second needle roller mounting hole, and lubricating oil is filled in the first oil storage hole and the second oil storage hole; the radial sealing piece is connected with a part to be sealed through the inner side end.
Further, a plurality of weight-reducing grooves are uniformly formed in the inner side end of the radial sealing piece up and down.
Further, the plurality of first oil storage holes are uniformly distributed on the edge of the first needle roller mounting hole along the circumference of the first needle roller mounting hole in a ring manner; the second oil storage holes are uniformly distributed on the edge of the second needle roller mounting hole along the circumference of the second needle roller mounting hole.
Further, the first oil storage hole and the second oil storage hole are arc slotted holes with openings, the radius R1 of the first oil storage hole is 0.015 Ra-0.018 Ra, the radius R2 of the second oil storage hole is 0.018 Rb-0.020 Rb, wherein Ra is the radius of the first needle roller mounting hole, and Rb is the radius of the second needle roller mounting hole.
Further, the cambered surfaces of the sealing sections of the first needle roller and the second needle roller are completely overlapped with the radial sealing cambered surfaces of the radial sealing sheets.
Further, the circle center of the first needle roller mounting hole is arranged on a connecting line of the radial sealing cambered surface midpoint of the radial sealing piece and the circle center.
Further, the radius Ra of the first needle roller mounting hole is 0.20R-0.25R, wherein R is the radial sealing cambered surface radius of the radial sealing piece.
Further, a preset eccentric included angle is formed between the circle center of the second needle roller mounting hole and the circle center of the radial sealing cambered surface of the radial sealing piece; the radius Rb of the second needle roller mounting hole is 0.10R-0.15R, wherein R is the radius of the radial sealing cambered surface of the radial sealing piece.
Further, the eccentric included angle alpha between the circle center of the second needle roller mounting hole and the circle center of the radial sealing cambered surface is 26.0-26.3 degrees.
The utility model also discloses a triangular rotor engine, which comprises a cylinder body and a rotor, wherein the rotor is arranged in the cylinder body; the rotor is a triangular rotor, mounting grooves are respectively formed in three vertex ends of the rotor, a radial sealing structure is arranged in the mounting grooves through inner side ends, the radial sealing structure is a radial sealing structure of the triangular rotor engine, and radial sealing cambered surfaces at outer side ends of the radial sealing structure are in contact with molded line surfaces of the cylinder body to form radial sealing.
The utility model has the beneficial effects that:
the radial sealing structure of the triangular rotor engine, disclosed by the utility model, has the advantages that a sealing mode of a single radial sealing piece and a cylinder body is abandoned, and the friction between the traditional radial sealing piece and the cylinder body of the cylinder is changed from single sliding friction to rolling friction and sliding friction by adopting a needle roller and radial sealing piece combined sealing mode, so that the friction performance is improved, and the abrasion of the radial sealing structure is reduced. Meanwhile, the lubricating oil is stored through the oil storage hole, and a continuous and uniform lubricating oil film can be formed on the sealing contact surface, so that the radial sealing structure has a lubricating function, the abrasion of the radial sealing structure is further reduced, the sealing performance is improved, the defects and problems of poor sealing performance and serious abrasion in the prior art are overcome to the greatest extent, the mechanical loss is reduced, and the efficiency and the service life of the engine are improved.
The utility model is especially suitable for radial sealing of the miniature aviation triangle rotor engine, so as to optimize and improve the sealing performance of the rotor engine, reduce abrasion and improve the sealing performance of the engine, thereby reducing mechanical loss and improving the efficiency and service life of the engine.
Drawings
FIG. 1 is a schematic perspective view of a radial seal structure of a delta-rotor engine according to the present utility model;
FIG. 2 is a schematic view of a needle mounting hole and an oil reservoir hole according to the present utility model;
FIG. 3 is a schematic view of the radii of the needle mounting holes and the oil storage holes of the present utility model;
fig. 4 is a schematic view of a rotary lobe engine incorporating the radial seal structure of the rotary lobe engine of the present utility model.
Wherein: 1-radial sealing structure, 2-radial sealing piece, 3-first kingpin, 4-second kingpin, 5-first kingpin mounting hole, 6-second kingpin mounting hole, 7-first oil storage hole, 8-second oil storage hole, 9-weight reduction groove, 10-cylinder body, 11-rotor.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings and examples.
The terms of directions such as up, down, left, right, front and rear in the present document are established based on the positional relationship shown in the drawings. The drawings are different, and the corresponding positional relationship may be changed, so that the scope of protection cannot be understood.
In the present utility model, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, and may be, for example, fixedly connected or detachably connected, integrally connected or mechanically connected, electrically connected or communicable with each other, directly connected or indirectly connected through an intermediate medium, or communicated between two components, or an interaction relationship between two components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiment describes a radial sealing structure of a rotor engine, which is designed based on the radial sealing principle and structural characteristics of the rotor engine and is completely suitable for radial sealing of the rotor engine.
As shown in fig. 1, the radial seal structure 1 includes a radial seal piece 2, a first needle roller 3, and a second needle roller 4.
The outer side surface of the radial sealing piece 2 is a radial sealing cambered surface, and as shown in fig. 2, a first needle roller mounting hole 5, a second needle roller mounting hole 6, a first oil storage hole 7 and a second oil storage hole 8 which are respectively communicated with the upper end surface and the lower end surface of the radial sealing piece 2 are arranged on the outer side end.
The centre of a circle of the first needle roller mounting hole 5 is located in the middle of the radial sealing cambered surface, two second needle roller mounting holes 6 are symmetrically arranged on two sides of the first needle roller mounting hole 5, and the first needle roller 3 and the second needle roller 4 are coaxially arranged in the first needle roller mounting hole 5 and the second needle roller mounting hole 6 respectively and can rotate in the first needle roller mounting hole 5 and the second needle roller mounting hole 6 respectively.
The first needle roller mounting hole 5 and the second needle roller mounting hole 6 are arc slot holes with openings, the openings of the arc slot holes are positioned at the intersection of the arc slot holes and the radial sealing cambered surface of the radial sealing piece 2, and the openings are sized so that the needle roller can rotate in the needle roller mounting hole and the radial sealing of the rotor can be ensured, preferably, the cambered surfaces of the sealing sections formed by the first needle roller 3 and the second needle roller 4 through the openings are completely overlapped with the radial sealing cambered surface of the radial sealing piece 2.
Preferably, as shown in fig. 3, the circle center of the first needle roller mounting hole 5 is arranged on a connecting line between the midpoint of the radial sealing cambered surface of the radial sealing piece 2 (i.e. the midpoint of the chord length in the section of the radial sealing cambered surface) and the circle center, and the radius Ra of the first needle roller mounting hole 5 is (0.20-0.25) R, wherein R is the radius of the radial sealing cambered surface of the radial sealing piece 2. The circle center of the second needle roller mounting hole 6 and the circle center of the radial sealing cambered surface of the radial sealing piece 2 have a preset eccentric included angle alpha, the radius Rb of the second needle roller mounting hole 6 is (0.10-0.15) R, and the eccentric included angle alpha is 26.0-26.3 degrees.
In addition, the first needle roller 3 and the second needle roller 4 are cylinders with the height consistent with that of the radial sealing piece 2, the diameter of the first needle roller 3 is matched with the inner diameter of the first needle roller mounting hole 5, the diameter of the second needle roller 4 is matched with the inner diameter of the second needle roller mounting hole 6 respectively to form clearance fit, and the fit tolerance range is preferably 0.01-0.015 mm. The first needle roller 3 and the second needle roller 4 designed in the embodiment can change the friction between the radial sealing plate 2 and the engine cylinder body from the traditional single sliding friction into rolling friction and sliding friction, ensure the sealing effect, reduce the abrasion of the radial sealing plate 2, and simultaneously avoid the problem that the radial sealing plate 2 continuously moves due to the rolling friction.
The plurality of first oil storage holes 7 are uniformly distributed on the edge of the first needle roller mounting holes 5 along the circumference of the first needle roller mounting holes 5 in a ring mode, and the first needle roller mounting holes 5 are communicated with the first oil storage holes 7. The plurality of second oil storage holes 8 are uniformly distributed on the edge of the second needle roller mounting holes 6 along the circumference of the second needle roller mounting holes 6 in a ring mode, and the second needle roller mounting holes 6 are communicated with the second oil storage holes 8. After the lubricating oil is injected into the first oil storage hole 7 and the second oil storage hole 8, the first needle roller 3 and the second needle roller 4 can be lubricated respectively, and the problem of radial sealing piece movement caused by friction is further avoided. The first oil storage hole 7 and the second oil storage hole 8 are arc slotted holes with openings, and the opening sizes of the arc slotted holes are suitable for forming an oil film on the surface of the needle roller by the amount of lubricating oil exudation in the arc slotted holes. The number of the first oil storage holes 7 and the second oil storage holes 8 depends on the design requirements and the actual situation. Preferably, as shown in fig. 3, the radius R1 of the first oil storage hole 7 is (0.015 to 0.018) Ra, and the radius R2 of the second oil storage hole 8 is (0.018 to 0.020) Rb.
The radial sealing piece 2 is connected with a part to be sealed through the inner side end, and a plurality of weight reduction grooves 9 (see fig. 1) are uniformly formed in the upper and lower parts of the inner side end, and the weight reduction grooves 9 are through grooves, so that weight reduction can be realized, and the processing is convenient. The weight reduction and the number of the weight reduction grooves 9 depend on calculation, design requirements and practical conditions. In addition, the inner side end of the radial sealing piece 2 is U-shaped, so that the weight of the radial sealing piece 2 can be further reduced.
As shown in fig. 4, when the radial seal structure 1 of the present embodiment is used in a delta-rotor engine, the rotor 11 installed in the cylinder 10 is provided with installation grooves at three apex ends respectively, the inner side end of the radial seal structure 1 is placed in the installation grooves to realize connection with the rotor 11, and the radial seal cambered surface at the outer side end of the radial seal structure 1 contacts with the molded line surface of the cylinder 10 to form radial seal. In addition, in order to further ensure that the radial sealing structure 1 and the cylinder body 10 are always in a sliding friction sealing state, an elastic component can be further arranged at the inner side end of the radial sealing structure 1, and the elastic component is arranged between the radial sealing structure 1 and the inner end surface of the mounting groove and can be a spring gasket, a rubber gasket or the like.
Before production and assembly, the radial sealing structure 1 of the embodiment can be subjected to three-dimensional modeling by adopting Solidworks industrial-level software, and Motion simulation analysis is performed by utilizing a Motion plug-in of Solidworks Premium, so that the design rationality and reliability of the radial sealing structure 1 are verified, the suitability of the radial sealing structure 1 and different triangular rotor engines is conveniently increased, and the number of times of sealing performance trimming after production is reduced.
The motion simulation analysis is completed through a power solver, the material properties, the mass and the inertia of the radial sealing structure 1 and the triangular rotor engine are considered in the analysis process, and finally the triangular rotor engine of the radial sealing structure 1 is accurately simulated and assembled, so that the motion unit effect of the triangular rotor engine is simulated and analyzed, and the motion unit effect comprises parameters such as motion trail, moment, damping, friction and the like. And adjusting each parameter in the radial sealing structure 1 according to the effect of the motion unit so as to optimize the design rationality and reliability of the radial sealing structure 1.
After the radial sealing structure 1 and the triangular rotor engine are assembled, the reasonable reliability of the radial sealing structure 1 can be verified through a complete machine test. The whole machine test is to test the sealing performance, the lubricating performance and the abrasion resistance of the rotor engine assembled by the solid parts on a special test bed.
While the principles of the utility model have been described in detail in connection with the preferred embodiments thereof, it should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the implementations of the utility model and are not intended to limit the scope of the utility model. The details of the embodiments are not to be taken as limiting the scope of the utility model, and any obvious modifications based on equivalent changes, simple substitutions, etc. of the technical solution of the utility model fall within the scope of the utility model without departing from the spirit and scope of the utility model.
Claims (10)
1. The radial sealing structure of the triangular rotor engine is characterized in that the radial sealing structure (1) comprises a radial sealing piece (2), a first needle roller (3) and a second needle roller (4);
the outer side end surface of the radial sealing piece (2) is a radial sealing cambered surface, and a first needle roller mounting hole (5), a second needle roller mounting hole (6), a first oil storage hole (7) and a second oil storage hole (8) which are respectively communicated with the upper end surface and the lower end surface of the radial sealing piece (2) are arranged on the outer side end; the circle center of the first needle roller mounting hole (5) is positioned in the middle of the radial sealing cambered surface, and the two second needle roller mounting holes (6) are symmetrically arranged on two sides of the first needle roller mounting hole (5); the first needle roller (3) and the second needle roller (4) are coaxially arranged in the first needle roller mounting hole (5) and the second needle roller mounting hole (6) respectively and can rotate in the first needle roller mounting hole (5) and the second needle roller mounting hole (6) respectively; the first needle roller mounting holes (5) and the second needle roller mounting holes (6) are arc slotted holes with openings, and the first needle roller (3) and the second needle roller (4) form a sealing section cambered surface through the openings; the first oil storage hole (7) is communicated with the first needle roller mounting hole (5), the second oil storage hole (8) is communicated with the second needle roller mounting hole (6), and lubricating oil is filled in the first oil storage hole (7) and the second oil storage hole (8); the radial sealing piece (2) is connected with a part to be sealed through the inner side end.
2. The radial sealing structure of the delta rotary engine according to claim 1, wherein a plurality of weight reducing grooves (9) are uniformly formed at the inner side end of the radial sealing piece (2) up and down.
3. The radial sealing structure of the delta rotary engine according to claim 1, wherein a plurality of the first oil storage holes (7) are uniformly distributed around the circumference of the first needle roller mounting hole (5) at the edge of the first needle roller mounting hole (5); the second oil storage holes (8) are uniformly distributed on the edge of the second needle roller mounting hole (6) along the circumference of the second needle roller mounting hole (6).
4. The radial sealing structure of the delta rotary engine according to claim 3, wherein the first oil storage hole (7) and the second oil storage hole (8) are arc slotted holes with openings, the radius R1 of the first oil storage hole (7) is 0.015 Ra-0.018 Ra, the radius R2 of the second oil storage hole (8) is 0.018 Rb-0.020 Rb, wherein Ra is the radius of the first needle roller mounting hole (5), and Rb is the radius of the second needle roller mounting hole (6).
5. The radial sealing structure of a delta rotor engine according to claim 1, characterized in that the sealing section cambered surfaces of the first needle roller (3) and the second needle roller (4) are completely coincident with the radial sealing cambered surfaces of the radial sealing piece (2).
6. The radial sealing structure of the delta rotary engine according to claim 1, wherein the circle center of the first needle roller mounting hole (5) is arranged on the connecting line of the radial sealing cambered surface midpoint of the radial sealing piece (2) and the circle center.
7. The radial sealing structure of the delta rotary engine according to claim 1, wherein the radius Ra of the first needle mounting hole (5) is 0.20R-0.25R, wherein R is the radial sealing cambered surface radius of the radial sealing piece (2).
8. The radial sealing structure of the delta rotor engine according to claim 1, wherein a preset eccentric included angle is formed between the center of the second needle roller mounting hole (6) and the center of the radial sealing cambered surface of the radial sealing piece (2); the radius Rb of the second needle roller mounting hole (6) is 0.10R-0.15R, wherein R is the radius of the radial sealing cambered surface of the radial sealing piece (2).
9. The radial sealing structure of the delta rotary engine according to claim 8, wherein the eccentric included angle alpha between the center of the second needle roller mounting hole (6) and the center of the radial sealing cambered surface is 26.0-26.3 degrees.
10. A delta rotary engine, characterized in that it comprises a cylinder (10) and a rotor (11), said rotor (11) being placed inside said cylinder (10); the rotor (11) is a triangular rotor, the three vertex ends of the rotor (11) are respectively provided with a mounting groove, the radial sealing structure (1) is arranged in the mounting grooves through the inner side ends, the radial sealing structure (1) is a radial sealing structure of the triangular rotor engine according to any one of claims 1 to 9, and the radial sealing cambered surface at the outer side end of the radial sealing structure (1) is in surface contact with the molded line of the cylinder body (10) to form radial sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321273305.0U CN219795385U (en) | 2023-05-24 | 2023-05-24 | Radial sealing structure of triangular rotor engine and triangular rotor engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321273305.0U CN219795385U (en) | 2023-05-24 | 2023-05-24 | Radial sealing structure of triangular rotor engine and triangular rotor engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219795385U true CN219795385U (en) | 2023-10-03 |
Family
ID=88150888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321273305.0U Active CN219795385U (en) | 2023-05-24 | 2023-05-24 | Radial sealing structure of triangular rotor engine and triangular rotor engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219795385U (en) |
-
2023
- 2023-05-24 CN CN202321273305.0U patent/CN219795385U/en active Active
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