CN201071826Y - Sealing structure for turbosupercharger - Google Patents
Sealing structure for turbosupercharger Download PDFInfo
- Publication number
- CN201071826Y CN201071826Y CNU2007200132364U CN200720013236U CN201071826Y CN 201071826 Y CN201071826 Y CN 201071826Y CN U2007200132364 U CNU2007200132364 U CN U2007200132364U CN 200720013236 U CN200720013236 U CN 200720013236U CN 201071826 Y CN201071826 Y CN 201071826Y
- Authority
- CN
- China
- Prior art keywords
- turbocharger
- seal ring
- head face
- face
- graphite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a seal structure of a turbocharger, which is characterized in that a gas compressor is sealed by a V-shaped obturating ring disposed on the outer coating of a rotor spindle in a choke plug seat; the head face of a carbon seal ring is seamlessly stuck with the supporting head face of the rotor spindle; the head face of the carbon seal ring and the head face of the rotor spindle are softly and tightly combined through a low pressure spring and a spring blade positioned in the choke plug seat. The utility model overcomes the problems that the sealability of the turbocharger is insecure and the oil leaks easily in prior art. The carbon seal ring is seamlessly combined with the rubber obturating ring, so that the sealing quality of the turbocharger is ensured, oil leakage is eliminated and the service life of the turbocharger is prolonged. Therefore, the turbocharger can work in optimum state.
Description
Technical field
The utility model relates to a kind of turbosupercharger sealing technique, relates in particular to a kind of turbosupercharger graphite grazing structure.
Background technique
Turbosupercharger is that to improve engine power and improve the effective measures of Economy also be the inevitable approach that motor is strengthened, it has become the important directions of current internal combustion engine development, be widely used for fields such as minicar and heavy truck, turbosupercharger has become one of vitals of motor, need constantly improve at aspects such as its performance and durability.The sealing configuration of turbosupercharger is to prevent that the lubricating oil of bearing support from entering the circulation part of pressurized machine, and stops the combustion gas of the air of gas compressor or turbine end to enter the lubricating oil chamber of pressurized machine, is the important step that guarantees the pressurized machine proper functioning.At present, the sealing of pressurized machine mainly contains piston ring seal, forms such as contact seal of graphite circle and lip seal.When petrol engine supercharging closure closes hour, the backside pressure of compressor impeller can be significantly less than the bearing support internal pressure, and impeller is worked under bigger condition of negative pressure, and pressure difference can be up to 80kpa, this moment, the piston type sealing configuration just can not guarantee effective seal, needed to adopt the contact seal of graphite circle.The sealing of common graphite circle is vulnerable to hot refluence phenomenon and influences adhesion to the turbine end face, and mechanical loss is big, and turbo-lag is also big.In order to guarantee higher sealability, the dual-active plug ring sealing means that adopts the structure relative complex is arranged also.In a word, sealing configuration is the weak link on the turbosupercharger always, need constantly improve, to guarantee the proper functioning of pressurized machine.
The model utility content
The utility model is at the technical problem of above-mentioned existence and a kind of simple in structure, sealability is reliable, mechanical loss is little turbosupercharger graphite seal structure of turbocharger is provided.
The utility model seal structure of turbocharger technological scheme is as follows:
A kind of seal structure of turbocharger, comprise turbine case, compressor impeller, it is characterized in that: the sealing of gas compressor, the V-shaped seal ring blanking cover seat inner rotor shaft of packing into puts outward, graphite-seal ring end face and rotor shaft support the gapless adhesion of end face and are connected, by soft the combining closely of end face with graphite-seal ring end face and rotor shaft of the low pressing spring that is provided with in the blanking cover seat and spring stop piece.
Advantage of the present utility model and effect are as follows:
The turbosupercharger sealability that the utility model has overcome above-mentioned prior art existence is unreliable, be prone to the problem of leakage of oil, adopt the mode that graphite-seal ring is gap-free sealed and rubber seal is gap-free sealed, guaranteed the airtight quality of turbosupercharger, avoided oil leakage phenomenon, improved the working life of pressurized machine, made turbocharger operation in the optimum state.
Description of drawings
Fig. 1 is the schematic representation of the utility model seal structure of turbocharger.
Fig. 2 is the side view of Fig. 1.
Among the figure: 1, V-shaped seal ring, 2, graphite-seal ring, 3, low pressing spring, 4, spring stop piece, 5, the blanking cover seat.
Embodiment
Describe the utility model in detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
The utility model seal structure of turbocharger as shown in Figure 1, adopt the sealing means of graphite and rubber combination that gas compressor is sealed, V-shaped seal ring 1 blanking cover seat 5 inner rotor shafts of packing into put outward, graphite-seal ring 2 end faces support the gapless adhesion of end face with rotor shaft and are connected, by soft the combining closely of end face of the low pressing springs 3 that are provided with in the blanking cover seat 5 and spring stop piece 4, to guarantee the reliable sealing of gas compressor under the very big situation of pressure difference with graphite-seal ring 2 end faces and rotor shaft.
It is to contact with blanking cover seat inner rotor shaft overcoat closely on the one hand for the V-type rubber seal, is to combine closely with the endoporus of graphite-seal ring on the other hand, plays double seal;
V-shaped seal ring adopts the hydrogenation butadiene acrylonitrile rubber to make, and makes point of contact gentle and can change with surface of contact.The making of graphite-seal ring requires flat and smooth and bright like a mirror of graphite surface.Adopt low pressing spring to make elastic force soft, guarantee reliable sealing.
Claims (1)
1. seal structure of turbocharger, it is characterized in that the sealing of gas compressor: V-shaped seal ring (1) blanking cover seat (5) inner rotor shaft of packing into puts outward, graphite-seal ring (2) end face and rotor shaft support the gapless adhesion of end face and are connected, soft the combining closely of end face that low pressing spring (3) and the spring stop piece (4) by setting in the blanking cover seat (5) makes graphite-seal ring (2) end face and rotor shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200132364U CN201071826Y (en) | 2007-07-12 | 2007-07-12 | Sealing structure for turbosupercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200132364U CN201071826Y (en) | 2007-07-12 | 2007-07-12 | Sealing structure for turbosupercharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201071826Y true CN201071826Y (en) | 2008-06-11 |
Family
ID=39550384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200132364U Expired - Lifetime CN201071826Y (en) | 2007-07-12 | 2007-07-12 | Sealing structure for turbosupercharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201071826Y (en) |
-
2007
- 2007-07-12 CN CNU2007200132364U patent/CN201071826Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070712 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |