CN115106749B - Sealing ring pre-supporting expansion device - Google Patents
Sealing ring pre-supporting expansion device Download PDFInfo
- Publication number
- CN115106749B CN115106749B CN202210608175.5A CN202210608175A CN115106749B CN 115106749 B CN115106749 B CN 115106749B CN 202210608175 A CN202210608175 A CN 202210608175A CN 115106749 B CN115106749 B CN 115106749B
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- Prior art keywords
- sealing ring
- cavity
- expansion sleeve
- base
- guide
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
The invention provides a sealing ring pre-supporting expansion device which comprises a guide push cylinder, a sealing ring expansion sleeve, a sealing ring body and a base; the guide pushing cylinder is provided with an inner cavity, the inner cavity comprises a first cavity and a second cavity which are arranged from bottom to top, the inner diameter of the first cavity is larger than that of the second cavity, and a surface formed between the first cavity and the second cavity is a stepped surface; the bottom of the base is provided with a bottom support, the middle part of the base is provided with a guide column, the middle upper part of the base is provided with an expansion sleeve seat, the expansion sleeve seat is used for sleeving the sealing ring expansion sleeve, the sealing ring body is sleeved to the sealing ring expansion sleeve, the guide pushing cylinder is sleeved to the base, and a first cavity of the guide pushing cylinder is in clearance fit with the guide column of the base; and the second cavity of the guide pushing cylinder is used for pushing the sealing ring body from top to bottom on the sealing ring expansion sleeve. The invention aims to solve the problem of uneven force application of the push cylinder when the steel sealing ring is expanded by adopting the expansion sleeve.
Description
Technical Field
The invention belongs to the field of turbochargers, and particularly relates to a sealing ring pre-supporting expansion device.
Background
Turbochargers are important subsystems of engines and have high technical requirements on the reliability and stability of their use. The shaft end sealing ring of the turbine rotating shaft is one of key structures for guaranteeing the stable operation and the service life of the supercharger. The turbine end and the compressor end of the turbocharger are both provided with sealing ring structures, and the turbocharger has the dual functions of sealing gas and sealing oil. Particularly, the working temperature of the turbine close to the turbine end can reach 750 ℃, and the sealing ring with unqualified quality is easy to deform exceeding a design margin due to high temperature, so that the air leakage and oil leakage of the supercharger are caused by light weight, the sealing effect cannot be achieved, the supercharger cannot work reliably for a long time, and the shaft breakage accident occurs due to cutting of the rotating shaft is formed by heavy weight;
when the turbine end sealing ring of the supercharger is assembled, a section of thick shaft needs to pass through to enter the sealing ring groove, and the section of journal needs to pass through is about 4% larger than the journal when the sealing ring is in a free state, so that the sealing ring needs to be inflated and then is installed in the journal ring groove. When the sealing ring is supported and expanded by using the expansion sleeve and the push sleeve tool, due to the unavoidable large size difference between the inner diameter of the push sleeve and the outer diameter of the conical surface of the expansion sleeve, the deflection of the thrust and the uneven distribution of the thrust can be caused by the deflection of the push sleeve in the supporting and expanding process of the sealing ring, so that the sealing ring is inclined to advance, bending torsion is generated or the fragments are generated by scratching the local part and the expansion sleeve, and the fragments are difficult to clean after entering the sealing ring groove, so that the serious hidden danger is buried for the occurrence of the faults of the supercharger.
Disclosure of Invention
In view of the above, the invention aims to provide a seal ring pre-supporting expansion device so as to solve the problem of uneven force application of a push cylinder when a steel seal ring is supported and expanded by an expansion sleeve.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a sealing ring pre-supporting expansion device comprises a guide push cylinder, a sealing ring expansion sleeve, a sealing ring body and a base; the guide pushing cylinder is provided with an inner cavity, the inner cavity comprises a first cavity and a second cavity which are arranged from bottom to top, the inner diameter of the first cavity is larger than that of the second cavity, and a surface formed between the first cavity and the second cavity is a stepped surface; the bottom of the base is provided with a bottom support, the middle part of the base is provided with a guide column, the middle upper part of the base is provided with an expansion sleeve seat, the expansion sleeve seat is used for sleeving the sealing ring expansion sleeve, the sealing ring body is sleeved to the sealing ring expansion sleeve, the guide pushing cylinder is sleeved to the base, and a first cavity of the guide pushing cylinder is in clearance fit with the guide column of the base; and the second cavity of the guide pushing cylinder is used for pushing the sealing ring body from top to bottom on the sealing ring expansion sleeve.
Further, after the sealing ring expansion sleeve is mounted on the expansion sleeve seat, a conical cylinder section and a straight cylinder section with gradually increased outer diameters from top to bottom are formed, and the outer diameter of the bottom of the conical cylinder section is the same as that of the straight cylinder section.
Further, the ratio of the outer diameter of the conical section top end to the outer diameter of the straight section is 1:1.13.
Furthermore, the second cavity of the guide pushing cylinder is in clearance fit with the guide column of the base through H7/H6.
Compared with the prior art, the sealing ring pre-expanding device has the following advantages:
(1) According to the seal ring pre-supporting expansion device, the stress is uniform when the seal ring body is supported and expanded, and local excessive deformation does not exist.
(2) The sealing ring pre-supporting expansion device has the advantages that the sealing ring pre-supporting expansion device is free from scratch with other parts and tools during assembly of the sealing ring body.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic sectional view showing an operating state of a seal ring pre-expanding device according to an embodiment of the present invention;
FIG. 2 is a schematic view showing an operation state of the seal ring according to the embodiment of the present invention in which the seal ring is fitted into the seal ring groove.
Reference numerals illustrate:
1. a guide pushing cylinder; 11. a first cavity; 12. a second cavity; 13. a step surface; 2. sealing ring expansion sleeve; 21. a cone section; 22. a straight barrel section; 3. a seal ring body; 4. a base; 41. an expansion sleeve seat; 42. a guide post; 43. a bottom support; 5. a rotating member; 51. and sealing the ring groove.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The sealing ring pre-supporting expansion device comprises a guide push cylinder 1, a sealing ring expansion sleeve 2, a sealing ring body 3 and a base 4; the guiding pushing cylinder 1 is provided with an inner cavity, the inner cavity comprises a first cavity 11 and a second cavity 12 which are arranged from bottom to top, the inner diameter of the first cavity 11 is larger than that of the second cavity 12, and a surface formed between the first cavity 11 and the second cavity 12 is a step surface 13; the bottom of the base 4 is provided with a bottom support 43, the middle part of the base 4 is provided with a guide column 42, the middle upper part of the base 4 forms an expansion sleeve seat 41, the expansion sleeve seat 41 is used for sleeving the sealing ring expansion sleeve 2, the sealing ring body 3 is sleeved on the sealing ring expansion sleeve 2, the guide push cylinder 1 is sleeved on the base 4, and the first cavity 11 of the guide push cylinder 1 and the guide column 42 of the base 4 form clearance fit; the second cavity 12 of the guide pushing cylinder 1 is used for pushing the sealing ring body 3 to the sealing ring expansion sleeve 2 from top to bottom.
Preferably, after the sealing ring expansion sleeve 2 is mounted on the expansion sleeve seat 41, a conical cylinder section 21 and a straight cylinder section 22 with gradually increased outer diameters from top to bottom are formed, and the outer diameter of the bottom of the conical cylinder section 21 is the same as the outer diameter of the straight cylinder section 22; the taper of the cone section 21 is 2 °.
Preferably, the ratio of the outer diameter of the top end of the conical section 21 to the outer diameter of the straight section 22 is 1:1.13;
the outer diameter of the minimum end of the conical section 21 is phi 12.5mm, the inner diameter of the sealing ring body 3 in the free state is phi 13.5mm, and the outer diameter of the straight section 22 isThe tolerance is slightly larger than the outer diameter of the sealing ring groove 51 of the rotating part 5>The design can ensure smooth assembly of the sealing ring and reduce plastic deformation of the sealing ring as much as possible. The perpendicularity between the outer diameter of the straight barrel section 22 of the sealing ring expansion sleeve 2 and the end surface is designed to be phi 0.01mm.
Preferably, the second cavity 12 of the guide pushing cylinder 1 is in clearance fit with the guide column 42 of the base by adopting H7/H6; the perpendicularity form and position tolerance of phi 0.01mm is adopted between the matching surface on the base and the upper end surface of the base.
The first cavity 11 of the guide pushing cylinder 1 is in clearance fit with the straight cylinder section 22 of the sealing ring expansion sleeve 2, and the design size is thatThe surface roughness was 1.6. The perpendicularity form and position tolerance of phi 0.01mm is designed by taking the end face of the step as a reference in the two sections of step inner holes of the guide pushing cylinder 1.
The sealing ring expansion sleeve 2 is placed on the expansion sleeve seat 41 of the base 4, and the sealing ring body 3 is installed into the sealing ring expansion sleeve 2 in a free state.
The second cavity 12 of the guide pushing cylinder 1 is sleeved into the guide post 42 of the base 4 and then pushed downwards at a constant speed, and the step surface 13 in the guide pushing cylinder 1 can be contacted with the sealing ring body 3 in the advancing process and continuously pushes the sealing ring body 3 downwards along the sealing ring expansion sleeve 2, so that the sealing ring is gradually opened.
Through simple limiting means or observation, when the sealing ring body 3 is supported to the maximum, the sealing ring expansion sleeve 2 with the sealing ring body 3 is taken down, the end face of the rotating part 5 with the sealing ring to be assembled is put in, and then the sealing ring body 3 is pushed into the sealing ring groove 51 by the sleeve matched with the end face, as shown in fig. 2.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The utility model provides a sealing ring props expanding unit in advance which characterized in that: comprises a guide push cylinder, a sealing ring expansion sleeve, a sealing ring body and a base; the guide pushing cylinder is provided with an inner cavity, the inner cavity comprises a first cavity and a second cavity which are arranged from bottom to top, the inner diameter of the first cavity is larger than that of the second cavity, and a surface formed between the first cavity and the second cavity is a stepped surface; the bottom of the base is provided with a bottom support, the middle part of the base is provided with a guide column, the middle upper part of the base is provided with an expansion sleeve seat, the expansion sleeve seat is used for sleeving the sealing ring expansion sleeve, the sealing ring body is sleeved to the sealing ring expansion sleeve, the guide pushing cylinder is sleeved to the base, and a first cavity of the guide pushing cylinder is in clearance fit with the guide column of the base; and the second cavity of the guide pushing cylinder is used for pushing the sealing ring body from top to bottom on the sealing ring expansion sleeve.
2. A seal ring pre-expansion device according to claim 1, wherein: after the sealing ring expansion sleeve is mounted on the expansion sleeve seat, a conical cylinder section and a straight cylinder section with gradually increased outer diameters from top to bottom are formed, and the outer diameter of the bottom of the conical cylinder section is the same as that of the straight cylinder section.
3. A seal ring pre-expansion device according to claim 2, wherein: the ratio of the outer diameter of the top end of the conical section to the outer diameter of the straight section is 1:1.13.
4. A seal ring pre-expansion device according to claim 1, wherein: the second cavity of the guide pushing cylinder is in clearance fit with the guide column of the base through H7/H6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608175.5A CN115106749B (en) | 2022-05-31 | 2022-05-31 | Sealing ring pre-supporting expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210608175.5A CN115106749B (en) | 2022-05-31 | 2022-05-31 | Sealing ring pre-supporting expansion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115106749A CN115106749A (en) | 2022-09-27 |
| CN115106749B true CN115106749B (en) | 2023-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210608175.5A Active CN115106749B (en) | 2022-05-31 | 2022-05-31 | Sealing ring pre-supporting expansion device |
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| CN (1) | CN115106749B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003039257A (en) * | 2001-07-26 | 2003-02-12 | Honda Motor Co Ltd | Jig for fixing o-ring |
| CN102357868A (en) * | 2011-09-20 | 2012-02-22 | 重庆普什机械有限责任公司 | Mounting tool for spring ring |
| CN202825702U (en) * | 2012-08-23 | 2013-03-27 | 湖南天雁机械有限责任公司 | Vortex end sealing ring arrangement clamp device for turbocharger |
| CN205834639U (en) * | 2016-07-14 | 2016-12-28 | 浙江新昌展望机械有限公司 | A kind of bearing sealed ring stamper mould |
| JP2018051666A (en) * | 2016-09-27 | 2018-04-05 | 東豊工業株式会社 | Ring fitting device |
| CN110153940A (en) * | 2019-05-27 | 2019-08-23 | 武汉正光汽车装备有限公司 | Assembly tool and its assembly method for outer O-ring |
| CN214643238U (en) * | 2020-12-28 | 2021-11-09 | 天津北方天力增压技术有限公司 | Assembly fixture for sealing ring of turbocharger |
-
2022
- 2022-05-31 CN CN202210608175.5A patent/CN115106749B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003039257A (en) * | 2001-07-26 | 2003-02-12 | Honda Motor Co Ltd | Jig for fixing o-ring |
| CN102357868A (en) * | 2011-09-20 | 2012-02-22 | 重庆普什机械有限责任公司 | Mounting tool for spring ring |
| CN202825702U (en) * | 2012-08-23 | 2013-03-27 | 湖南天雁机械有限责任公司 | Vortex end sealing ring arrangement clamp device for turbocharger |
| CN205834639U (en) * | 2016-07-14 | 2016-12-28 | 浙江新昌展望机械有限公司 | A kind of bearing sealed ring stamper mould |
| JP2018051666A (en) * | 2016-09-27 | 2018-04-05 | 東豊工業株式会社 | Ring fitting device |
| CN110153940A (en) * | 2019-05-27 | 2019-08-23 | 武汉正光汽车装备有限公司 | Assembly tool and its assembly method for outer O-ring |
| CN214643238U (en) * | 2020-12-28 | 2021-11-09 | 天津北方天力增压技术有限公司 | Assembly fixture for sealing ring of turbocharger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115106749A (en) | 2022-09-27 |
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