CN214661066U - Two-stage compression high-speed centrifugal air compressor connecting pipe structure - Google Patents
Two-stage compression high-speed centrifugal air compressor connecting pipe structure Download PDFInfo
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- CN214661066U CN214661066U CN202120648045.5U CN202120648045U CN214661066U CN 214661066 U CN214661066 U CN 214661066U CN 202120648045 U CN202120648045 U CN 202120648045U CN 214661066 U CN214661066 U CN 214661066U
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Abstract
The utility model provides a high-speed centrifugal air compressor machine connecting pipe structure of two-stage compression, includes high-speed motor and establishes one-level spiral case and the second grade spiral case in the high-speed motor both sides, is linked together its characterized in that through the connecting pipe between one-level spiral case and the second grade spiral case: the connecting pipe is connected with the outlet of the first-stage volute in a floating and sealing mode along the axial direction, and the connecting pipe is fixedly connected with the inlet of the second-stage volute; or the connecting pipe is fixedly connected with the outlet of the first-stage volute and is connected with the inlet of the second-stage volute in a floating and sealing mode along the axial direction. The rigid fixed connection structure between the connecting pipe and the two-stage compression cavity in the past is changed into a structure form that one end of the connecting pipe is fixed and the other end of the connecting pipe is connected with the floating seal along the axial direction, the floating seal structure can generate displacement of a certain distance to eliminate slight deformation generated after the connecting pipe is heated, the sealing effect can be guaranteed, air leakage is avoided, and the compression efficiency of the centrifugal air compressor is guaranteed.
Description
The technical field is as follows:
the utility model relates to a high-speed centrifugal air compressor machine connection tube structure of two-stage compression.
Background art:
at present, the development of new energy fuel cell automobiles is considered as an important link of traffic energy power conversion, in order to ensure the normal work of a fuel cell engine, the engine generally needs auxiliary systems such as a hydrogen supply subsystem, an air supply subsystem and a circulating water cooling management subsystem, and a large number of researches show that the high-pressure and large-flow air supply has an obvious effect of improving the power output of the existing fuel cell engine. Therefore, before air enters the engine, the air intake is pressurized, and a centrifugal air compressor is an energy conversion device for achieving the aim, and is one of important parts of an air supply system of a fuel cell engine. Present centrifugal air compressor, generally through high-speed motor simultaneous drive two-stage compression chamber, carry out the two-stage pressure boost to the air, need connect through the connecting pipe between the two-stage compression chamber, present connection form, be rigid fixed connection between connecting pipe and the two-stage compression chamber, because the air temperature in the two-stage compression chamber is higher, the connecting pipe must adopt high temperature resistant cast aluminum pipe, cast aluminum pipe is the stereoplasm pipeline, do not possess the elastic deformation ability, produce the deformation easily after being heated for a long time, lead to the junction between connecting pipe and the two-stage compression chamber the condition of not tight gas leakage of sealing to the influence centrifugal air compressor's compression efficiency.
In summary, the problem of the connection structure between the two-stage compression cavity and the connection pipe of the centrifugal air compressor has become a technical problem to be solved urgently in the industry.
The utility model has the following contents:
the utility model discloses a remedy prior art not enough, provide a high-speed centrifugal air compressor machine connecting pipe structure of two-stage compression, solved rigid fixed connection between connecting pipe and the two-stage compression chamber in the past, produced the problem of deformation after being heated easily, solved the junction between connecting pipe and the two-stage compression chamber in the past and appeared sealed not tight gas leakage, influence the problem of compression efficiency.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides a high-speed centrifugal air compressor machine connecting pipe structure of two-stage compression, includes high-speed motor and establishes one-level spiral case and the second grade spiral case in the high-speed motor both sides, is linked together its characterized in that through the connecting pipe between one-level spiral case and the second grade spiral case: the connecting pipe is connected with the outlet of the first-stage volute in a floating and sealing mode along the axial direction, and the connecting pipe is fixedly connected with the inlet of the second-stage volute; or the connecting pipe is fixedly connected with the outlet of the first-stage volute and is connected with the inlet of the second-stage volute in a floating and sealing mode along the axial direction.
The connecting pipe comprises a straight pipe connected with the outlet of the first-stage volute and an elbow connected with the inlet of the second-stage volute.
The straight pipe is sleeved outside the outlet of the first-stage volute, and a sealing ring is arranged between the straight pipe and the outlet of the first-stage volute.
The bent pipe is fixedly connected with the inlet of the secondary volute through a hoop.
The elbow is fixedly connected with the inlet of the second-stage volute through a flange.
The cross section of the joint of the straight pipe and the bent pipe is elliptical.
The elbow is equipped with the location tang with second grade spiral case entry junction, is equipped with O type circle in the clamp and seals.
The utility model adopts the above technical scheme, have following advantage:
the rigid fixed connection structure between the connecting pipe and the two-stage compression cavity in the past is changed into a structure form that one end of the connecting pipe is fixed and the other end of the connecting pipe is connected with the floating seal along the axial direction, the floating seal structure can generate displacement of a certain distance to eliminate slight deformation generated after the connecting pipe is heated, the sealing effect can be guaranteed, air leakage is avoided, and the compression efficiency of the centrifugal air compressor is guaranteed.
Description of the drawings:
fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is the schematic view of the sectional structure of the junction between the straight pipe and the one-level volute outlet of the present invention.
Fig. 3 is a schematic sectional view of the joint between the straight pipe and the bent pipe according to the present invention.
Fig. 4 is a schematic structural view of the junction between the elbow and the inlet of the second-stage volute according to the present invention.
In the figure, 1, a high-speed motor, 2, a first-stage volute, 3, a second-stage volute, 4, a straight pipe, 5, a bent pipe, 6, a sealing ring, 7, a hoop, 8 and a positioning spigot are arranged.
The specific implementation mode is as follows:
in order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
As shown in fig. 1-4, a high-speed centrifugal air compressor machine connecting tube structure of two-stage compression, including high-speed motor 1 and establish one-level spiral case 2 and second grade spiral case 3 in high-speed motor 1 both sides, be linked together its characterized in that through the connecting pipe between one-level spiral case 2 and the second grade spiral case 3: the connecting pipe is connected with the outlet of the first-stage volute 2 in a floating and sealing mode along the axial direction, and the connecting pipe is fixedly connected with the inlet of the second-stage volute 3; or the connecting pipe is fixedly connected with the outlet of the first-stage volute 2, and the connecting pipe is connected with the inlet of the second-stage volute 3 in a floating and sealing mode along the axial direction.
The connecting pipe comprises a straight pipe 4 connected with the outlet of the first-stage volute 2 and an elbow pipe 5 connected with the inlet of the second-stage volute 3.
The straight pipe 4 cover is established in the export outside of one-level spiral case 2, is equipped with sealing washer 6 between the export of straight 4 pipe and one-level spiral case 2, both can produce the displacement of certain distance between the export of straight pipe 4 and one-level spiral case 2 to eliminate the slight deformation that the connecting pipe produced after being heated, can guarantee the sealed effect between the export of straight pipe 4 and one-level spiral case 2 again, avoid gas leakage, guaranteed centrifugal air compressor's compression efficiency.
The elbow pipe 5 is fixedly connected with the inlet of the secondary volute 3 through a hoop 7, or the elbow pipe 5 is fixedly connected with the inlet of the secondary volute 3 through a flange. Other conventional structures that can fixedly connect the elbow 5 to the inlet of the second-stage volute 3 are within the scope of the present invention.
The cross section of the joint of the straight pipe 4 and the bent pipe 5 is elliptical, so that the turning radius can be reduced, and the occupied space is reduced.
The bent pipe 5 is provided with a positioning spigot 8 at the joint of the inlet of the second-stage volute 3 so as to facilitate butt joint, and an O-shaped ring is arranged in the hoop 7 for sealing.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (7)
1. The utility model provides a high-speed centrifugal air compressor machine connecting pipe structure of two-stage compression, includes high-speed motor and establishes one-level spiral case and the second grade spiral case in the high-speed motor both sides, is linked together its characterized in that through the connecting pipe between one-level spiral case and the second grade spiral case: the connecting pipe is connected with the outlet of the first-stage volute in a floating and sealing mode along the axial direction, and the connecting pipe is fixedly connected with the inlet of the second-stage volute; or the connecting pipe is fixedly connected with the outlet of the first-stage volute and is connected with the inlet of the second-stage volute in a floating and sealing mode along the axial direction.
2. The two-stage compression high-speed centrifugal air compressor connecting pipe structure as claimed in claim 1, wherein: the connecting pipe comprises a straight pipe connected with the outlet of the first-stage volute and an elbow connected with the inlet of the second-stage volute.
3. The two-stage compression high-speed centrifugal air compressor connecting pipe structure as claimed in claim 2, wherein: the straight pipe is sleeved outside the outlet of the first-stage volute, and a sealing ring is arranged between the straight pipe and the outlet of the first-stage volute.
4. The two-stage compression high-speed centrifugal air compressor connecting pipe structure as claimed in claim 2, wherein: the bent pipe is fixedly connected with the inlet of the secondary volute through a hoop.
5. The two-stage compression high-speed centrifugal air compressor connecting pipe structure as claimed in claim 2, wherein: the elbow is fixedly connected with the inlet of the second-stage volute through a flange.
6. The two-stage compression high-speed centrifugal air compressor connecting pipe structure as claimed in claim 2, wherein: the cross section of the joint of the straight pipe and the bent pipe is elliptical.
7. The two-stage compression high-speed centrifugal air compressor connecting pipe structure as claimed in claim 4, wherein: the elbow is equipped with the location tang with second grade spiral case entry junction, is equipped with O type circle in the clamp and seals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648045.5U CN214661066U (en) | 2021-03-30 | 2021-03-30 | Two-stage compression high-speed centrifugal air compressor connecting pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120648045.5U CN214661066U (en) | 2021-03-30 | 2021-03-30 | Two-stage compression high-speed centrifugal air compressor connecting pipe structure |
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| Publication Number | Publication Date |
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| CN214661066U true CN214661066U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120648045.5U Active CN214661066U (en) | 2021-03-30 | 2021-03-30 | Two-stage compression high-speed centrifugal air compressor connecting pipe structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857043A (en) * | 2022-04-21 | 2022-08-05 | 珠海格力电器股份有限公司 | Air compressor, fuel cell and new energy vehicle |
-
2021
- 2021-03-30 CN CN202120648045.5U patent/CN214661066U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857043A (en) * | 2022-04-21 | 2022-08-05 | 珠海格力电器股份有限公司 | Air compressor, fuel cell and new energy vehicle |
| CN114857043B (en) * | 2022-04-21 | 2023-10-24 | 珠海格力电器股份有限公司 | Air compressor, fuel cell and new energy vehicle |
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