CN220748361U - Dual-purpose sealing system for automobile supercharger and aviation supercharger - Google Patents
Dual-purpose sealing system for automobile supercharger and aviation supercharger Download PDFInfo
- Publication number
- CN220748361U CN220748361U CN202322590637.8U CN202322590637U CN220748361U CN 220748361 U CN220748361 U CN 220748361U CN 202322590637 U CN202322590637 U CN 202322590637U CN 220748361 U CN220748361 U CN 220748361U
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- CN
- China
- Prior art keywords
- graphite ring
- supercharger
- thrust
- cavity
- gland
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 210000004907 gland Anatomy 0.000 claims abstract description 29
- 239000003921 oil Substances 0.000 claims description 20
- 239000010687 lubricating oil Substances 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005461 lubrication Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses a dual-purpose sealing system for an automobile supercharger and an aviation supercharger, which comprises a thrust component, a shaft seal, a gland, a sealing component and a rotating shaft, wherein the rotating shaft penetrates through the thrust component and the shaft seal; still including having graphite ring, the elastomeric element of hole, at least a portion of graphite ring is located the cavity, and the one end of graphite ring cooperates with thrust unit's one end, and the other end of graphite ring supports with elastomeric element's one end, and elastomeric element is located the cavity, elastomeric element's the other end cooperates with the wall of cavity, sealing member assembles between graphite ring and sleeve pipe. The utility model can always keep the pressure balance between the compressor end and the lubrication end.
Description
Technical Field
The utility model relates to the technical field of small turbojet engines, in particular to a dual-purpose sealing system for an automobile supercharger and an aviation supercharger.
Background
As shown in fig. 1, the structure of a rotor and a compressor of a turbocharger comprises a thrust part 2, a shaft seal 3, a gland 4, a sealing part 5 and a rotating shaft 6, wherein the rotating shaft 6 penetrates through an intermediate body 1, the thrust part 2, the shaft seal 3 and the gland 4, the intermediate body 1 is fixed with the gland 4, a stepped cavity is arranged on the gland 4, a part of the shaft seal 3 is positioned in the cavity, the other part of the shaft seal 3 is matched with a through hole on the gland 4, an annular groove is arranged on the shaft seal 3, the sealing part 5 is arranged in the annular groove on the shaft seal, the sealing part 5 seals a gap between the shaft seal 3 and the gland 4, the thrust part 2 is positioned between the intermediate body 1 and the gland 4, one end of the thrust part 2 is propped against the end of the shaft seal 3, and an oil guide hole is arranged on the thrust part 2 and is communicated with an oil duct on the intermediate body 1.
After the lubricating oil enters the oil duct on the intermediate body 1, the acting force of the lubricating oil on the external oil pump pressure flows to the gap between the thrust part 2 and the rotating shaft 6 through the oil hole on the thrust part 2, then a small amount of lubricating oil flows into the cavity on the gland 4 along the gap between the thrust part 2 and the end face of the shaft seal 3, finally flows to the sealing part 5 along the gap between the outer peripheral face of the shaft seal 3 and the gland 4, the lubricating oil is prevented from flowing into the air inlet channel of the air compressor under the sealing effect of the sealing part 5, and meanwhile, the high-pressure air is prevented from entering the flow channel of the lubricating oil under the effect of the sealing part 5, so that the lubricating oil is prevented from being reversely pushed by the high-pressure air to cause lubrication among parts and abrasion is aggravated.
When the shaft 6 rotates, the shaft seal 3 and the thrust member 2 are relatively moved, so that the gap between the thrust member 2 and the shaft seal 3 is small, and therefore the amount of lubricating oil flowing through the gap is also very small, so that the friction between the thrust member 2 and the shaft seal 3 is large, and after long-term use, large abrasion occurs between the thrust member 2 and the shaft seal 3, so that the gap between the thrust member 2 and the shaft seal 3 is increased, so that excessive lubricating oil flowing into the upper cavity of the gland 4 is caused, and the pressure of the compressor end and the lubricating end is unbalanced.
Disclosure of Invention
The utility model provides a dual-purpose sealing system for an automobile supercharger and an aviation supercharger, which can always keep the pressure balance between a compressor end and a lubrication end.
The sealing system for the dual-purpose of the automobile supercharger and the aviation supercharger comprises a thrust component, a shaft seal, a gland, a sealing component and a rotating shaft, wherein the rotating shaft penetrates through the thrust component and the shaft seal;
still including having graphite ring, the elastomeric element of hole, at least a portion of graphite ring is located the cavity, and the one end of graphite ring cooperates with thrust unit's one end, and the other end of graphite ring supports with elastomeric element's one end, and elastomeric element is located the cavity, elastomeric element's the other end cooperates with the wall of cavity, sealing member assembles between graphite ring and sleeve pipe.
Further, one end of the thrust component, which is matched with the graphite ring, is provided with a plurality of oil storage tanks for storing lubricating oil.
Further, the oil storage tank is crescent.
The surface of the thrust component is provided with a silicon carbide coating.
Further, the other end of the shaft seal is provided with a positioning part, and the positioning part is combined with the other end of the gland.
Further, a limiting part is arranged in an inner hole on the graphite ring, and one end of the sealing part is limited by the limiting part after being matched with the limiting part.
Further, a guide groove is formed in the outer peripheral surface of the graphite ring, a protruding portion located in the cavity is arranged on the gland, and the protruding portion is in clearance fit with the guide groove.
In the utility model, when the rotating shaft rotates, relative motion is generated between the graphite ring and the thrust component, and the graphite ring is very smooth and the friction system is low, so that the abrasion generated between the graphite ring and the thrust component is very small, and in addition, lubricating oil flows through a gap between the graphite ring and the thrust component, an oil film exists between the graphite ring and the thrust component, so that the abrasion is further reduced. When the graphite ring is worn, the graphite ring moves under the action of the tension of the elastic component, so that the graphite ring and the thrust component are always combined under the action of the elastic component no matter whether the graphite ring is worn or not, the quantity of lubricating oil between the graphite ring and the thrust component is kept, the pressure of the lubricating oil cannot be changed, and the pressures at two ends of the sealing component are balanced, namely, the pressure of the compressor end and the lubricating end is kept balanced.
Drawings
Fig. 1 is a schematic diagram of a rotor and a compressor in a turbocharger according to the prior art.
Fig. 2 is a schematic diagram of a dual purpose seal system for an automotive supercharger and an aerospace supercharger in accordance with the present utility model.
Fig. 3 is a schematic structural view of the thrust member.
Fig. 4 is a schematic structural view of the gland.
Fig. 5 is a schematic structural view of a graphite ring.
The reference symbols in the drawings:
intermediate body 1, thrust part 2, oil storage tank 2a, shaft seal 3, location portion 3a, gland 4, cavity 4a, sleeve 4b, bellying 4c, sealing member 5, pivot 6, graphite ring 7, spacing portion 7a, guide way 7b, elastomeric element 8, separation blade 9.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
As shown in fig. 2 to 5, the dual-purpose sealing system for the automobile supercharger and the aviation supercharger comprises a thrust component 2, a shaft seal 3, a gland 4, a sealing component 5 and a rotating shaft 6, wherein the rotating shaft 6 penetrates through the thrust component 2 and the shaft seal 3, a cavity 4a is arranged at one end of the gland 4, a sleeve 4b positioned in the cavity 4a is arranged on the gland 4, a through hole is formed in the gland 4, the sleeve 4b is combined with an orifice of the through hole, and one end of the shaft seal 3 is matched with one end of the thrust component 2 after the shaft seal 3 penetrates through the sleeve 4 b. After the sleeve 4b is arranged, the cavity 4a is an annular cavity.
The other end of the shaft seal 3 is provided with a positioning part 3a, the outer diameter of the positioning part 3a is larger than the aperture of the through hole on the gland 4, therefore, the positioning part 3a is positioned outside the through hole, the positioning part 3a is combined with the other end of the gland 4, and the positioning part 3a is blocked by the axial end face of the gland 4.
The utility model further comprises a graphite ring 7 with an inner hole and an elastic component 8, at least one part of the graphite ring 7 is positioned in the cavity 4a, one end of the graphite ring 7 is matched with one end of the thrust component 2, the other end of the graphite ring 7 is propped against one end of the elastic component 8, the elastic component 8 is positioned in the cavity 4a, the other end of the elastic component 8 is matched with the wall surface of the cavity 4a, and the sealing component 5 is assembled between the graphite ring 7 and the sleeve 4 b.
In this example, the graphite ring 7 is of the type M254K, shore hardness: 80, compressive strength 175MPa, flexural strength: 65MPa, service temperature: 250 degrees. The elastic member 8 preferably adopts a coil spring.
In the above structure, when the rotation shaft 6 rotates, relative movement is generated between the graphite ring 7 and the thrust member 2, and since the graphite ring 7 itself is very smooth and the friction system is low, abrasion generated between the graphite ring 7 and the thrust member 2 is very small, and in addition, lubricating oil flows through the gap between the graphite ring 7 and the thrust member 2, an oil film exists between the graphite ring 7 and the thrust member 2, and abrasion is further reduced. When the graphite ring 7 is worn, the graphite ring 7 moves under the tension of the elastic component 8, so that the graphite ring 7 and the thrust component 2 are always combined under the action of the elastic component 8 no matter whether the graphite ring 7 is worn or not, the quantity of lubricating oil between the graphite ring 7 and the thrust component 2 is kept, the pressure of the lubricating oil cannot be changed, and the pressures at two ends of the sealing component 5 are balanced, namely, the balance of the pressures at the compressor end and the lubrication end is ensured.
The surface of the thrust component 2 is provided with a silicon carbide coating. The thickness of the silicon carbide coating is 0.12+/-0.03 mm, and the silicon carbide coating has the properties of high hardness and wear resistance, and has the hardness of: mohs 9.2-9.6. The friction coefficient is small in a non-lubrication state, the friction force is relatively small, the surface roughness is small, and the wear resistance is good. The silicon carbide coating has high temperature resistance, and when the temperature exceeds 900 ℃, a layer of silicon dioxide is formed on the surface, so that the silicon carbide coating has excellent oxidation resistance. The service life of the sealing element can be prolonged when the sealing element is used in an airtight sealing element.
One end of the thrust component 2 matched with the graphite ring 7 is provided with a plurality of oil storage tanks 2a for storing lubricating oil, and the oil storage tanks 2a are crescent. The oil storage grooves 2a are located on the axial end face of the graphite ring 7, and the oil storage grooves 2a are arranged at intervals along the circumferential direction. Lubricating oil is stored through the oil storage tank 2a, and an oil film surface of a sealing end face is formed due to the dynamic pressure effect of the oil storage tank 2a during operation, so that dry friction between the thrust component 2 and the end face of the graphite ring 7 is avoided.
The temperature of the sealing end face of the thrust component 2 and the graphite ring 7 can be reduced by 10 degrees when the rotating speed of the rotating shaft 6 is 3000r/min through the lubricating oil provided by the oil storage tank 2a, so that the friction coefficient between the end faces is reduced, and the friction heat is reduced. Reducing deformation of end surfaces, improving lubrication condition of objects between the end surfaces, and improving airtight sealing performance
The inner hole of the graphite ring 7 is provided with a limiting part 7a, and one end of the sealing part 5 is limited by the limiting part 7a after being matched with the limiting part 7 a. After the sealing member 5 receives pressure, the sealing member 5 moves towards the limiting part 7a, and the sealing member 5 is blocked by the limiting part 7a, so that the operation of the sealing member 5 is ensured, and the sealing performance of the sealing member 5 is ensured.
The outer peripheral surface of the graphite ring 7 is provided with a guide groove 7b, the gland 4 is provided with a protruding part 4c positioned in the cavity 4a, and the protruding part 4c is in clearance fit with the guide groove 7 b. By the engagement of the guide groove 7b with the boss 4c, the graphite ring 7 is moved in a straight line when the graphite ring 7 is moved.
The baffle 9 is arranged between the graphite ring 7 and the elastic component 8, a notch is arranged on the peripheral surface of the baffle 9, the notch is in clearance fit with the protruding portion 4c, the baffle 9 and the graphite ring 7 are in surface-to-surface fit, and damage to the graphite ring 7 caused by the elastic component 8 is reduced under the condition that the contact area is increased relative to the fit between the elastic component 8 and the graphite ring 7.
Claims (7)
1. The dual-purpose sealing system for the automobile supercharger and the aviation supercharger comprises a thrust component (2), a shaft seal (3), a gland (4), a sealing component (5) and a rotating shaft (6), wherein the rotating shaft (6) penetrates through the thrust component (2) and the shaft seal (3), and a cavity (4 a) is formed at one end of the gland (4), and the dual-purpose sealing system is characterized in that a sleeve (4 b) positioned in the cavity (4 a) is arranged on the gland (4), and one end of the shaft seal (3) is matched with one end of the thrust component (2) after the shaft seal (3) penetrates through the sleeve (4 b);
still including graphite ring (7) that have hole, elastomeric element (8), at least a portion of graphite ring (7) is located cavity (4 a), and the one end cooperation of graphite ring (7) and thrust part (2) the other end of graphite ring (7) is supported with the one end of elastomeric element (8), and elastomeric element (8) are located cavity (4 a), and the other end of elastomeric element (8) cooperates with the wall of cavity (4 a), sealing member (5) assembly is between graphite ring (7) and sleeve pipe (4 b).
2. The dual-purpose sealing system for the automobile supercharger and the aviation supercharger according to claim 1, wherein one end of the thrust component (2) matched with the graphite ring (7) is provided with a plurality of oil storage tanks (2 a) for storing lubricating oil.
3. Sealing system for both automotive and aero-superchargers according to claim 2, characterised in that the oil reservoir (2 a) is crescent-shaped.
4. The sealing system for both automotive and aero-superchargers according to claim 1, wherein the surface of the thrust member (2) is provided with a silicon carbide coating.
5. The dual-purpose sealing system for the automobile supercharger and the aviation supercharger according to claim 1, wherein the other end of the shaft seal (3) is provided with a positioning part (3 a), and the positioning part (3 a) is combined with the other end of the gland (4).
6. The dual-purpose sealing system for the automobile supercharger and the aviation supercharger according to claim 1, wherein a limiting part (7 a) is arranged in an inner hole on the graphite ring (7), and one end of the sealing component (5) is limited by the limiting part (7 a) after being matched with the limiting part (7 a).
7. The dual-purpose sealing system for the automobile supercharger and the aviation supercharger according to claim 1, wherein a guide groove (7 b) is arranged on the outer peripheral surface of the graphite ring (7), a protruding part (4 c) positioned in a cavity (4 a) is arranged on the gland (4), and the protruding part (4 c) is in clearance fit with the guide groove (7 b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322590637.8U CN220748361U (en) | 2023-09-25 | 2023-09-25 | Dual-purpose sealing system for automobile supercharger and aviation supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322590637.8U CN220748361U (en) | 2023-09-25 | 2023-09-25 | Dual-purpose sealing system for automobile supercharger and aviation supercharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220748361U true CN220748361U (en) | 2024-04-09 |
Family
ID=90560556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322590637.8U Active CN220748361U (en) | 2023-09-25 | 2023-09-25 | Dual-purpose sealing system for automobile supercharger and aviation supercharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220748361U (en) |
-
2023
- 2023-09-25 CN CN202322590637.8U patent/CN220748361U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |