CN218062405U - Floating sealing structure for expander and motor carbon ring - Google Patents
Floating sealing structure for expander and motor carbon ring Download PDFInfo
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- CN218062405U CN218062405U CN202221247145.8U CN202221247145U CN218062405U CN 218062405 U CN218062405 U CN 218062405U CN 202221247145 U CN202221247145 U CN 202221247145U CN 218062405 U CN218062405 U CN 218062405U
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- expansion
- motor
- expansion end
- main shaft
- carbon ring
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Abstract
An expansion machine and motor carbon ring floating sealing structure comprises a motor shell, a stator and a main shaft, wherein an expansion end bearing seat used for supporting the main shaft is installed on the inner side of one end of the motor shell, an expansion end guider is installed on the outer side of the expansion end bearing seat, a plurality of floating carbon rings are installed on one side, close to an expansion machine, in a center hole of the expansion end guider, a baffle is installed between every two adjacent carbon rings, the carbon ring on the outermost side is installed and fixed through a gland, and the carbon rings are in micro-contact sealing with the main shaft, the baffle, the gland and the expansion end guider; and a labyrinth seal groove is arranged on one side of the expansion end guider close to the motor in the central hole. A floating sealing structure matched with micro-contact is formed, so that on one hand, the mixed gas in the expansion machine is effectively prevented from leaking into the motor cavity from a gap of the main shaft to corrode the stator and the main shaft, and the motor is protected; on the other hand, the carbon ring is in micro-contact fit with the main shaft, so that the abrasion is very small, the friction heating amount is very low, the service life is long, and the sealing effect is more stable and reliable.
Description
The technical field is as follows:
the utility model relates to an expander and motor carbocycle seal structure that floats.
Background art:
the current development of new energy fuel cell vehicles 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 amount of researches show that the supply of high-pressure and high-flow air 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.
The publication No. CN113809354A, entitled as a patent application of a fuel cell air supply system using an expander assisted compressor, discloses a structure in which a power shaft of the expander is connected with a rotating shaft of the compressor to provide assistance to the compressor, but when the expander is connected with the compressor, a mixed gas coming out of the fuel cell enters the expander, and the cost of the mixed gas mainly includes liquid water, vapor water, nitrogen, a small amount of oxygen, a small amount of hydrogen, and the like. In the common contact type sealing ring, because the main shaft rotates at a high speed during working, the sealing ring is easily abraded, heat is seriously generated, a gap is enlarged, and the condition of sealing failure occurs.
In summary, the sealing problem between the expander and the motor 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 an expander and motor carbocycle floating seal structure, solved mixed gas in the expander in the past and leaked to the motor intracavity portion from the motor spindle gap and cause the corrosion problem, solved contact sealing washer wearing and tearing in the past serious, generate heat seriously, the life-span is short, the problem of sealed inefficacy.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
a floating sealing structure of an expansion machine and a motor carbon ring comprises a motor shell, a stator and a main shaft, wherein an expansion end bearing seat used for supporting the main shaft is installed on the inner side of one end of the motor shell, an expansion end guider is installed on the outer side of the expansion end bearing seat, one end of the main shaft penetrates through the expansion end guider and is provided with an expansion impeller, an expansion machine shell connected with the motor shell is arranged on the outer side of the expansion impeller, an expansion volute is arranged inside the expansion machine shell, an expansion air inlet and an expansion air outlet are formed in the expansion machine shell, a plurality of floating carbon rings are installed in one side, close to the expansion machine, of a central hole of the expansion end guider, a baffle is installed between every two adjacent carbon rings, the carbon ring on the outermost side is installed and fixed through a gland, and the carbon rings are in micro-contact sealing with the main shaft, the baffle, the gland and the expansion end guider; and a labyrinth seal groove is arranged on one side, close to the motor, in the central hole of the expansion end guider.
The expansion end guider is characterized in that an annular clamping groove is formed in the inner side of a center hole of the expansion end guider, and the carbon ring is installed in the annular clamping groove in a floating mode.
The outer ring of the carbon ring is provided with a spring retainer ring.
The baffle and the gland are mounted on the expansion end guide through countersunk bolts.
The utility model adopts the above technical scheme, have following advantage:
the floating type sealing structure is characterized in that a plurality of floating type carbon rings are installed in a central hole of the expansion end guider, a baffle is installed between every two adjacent carbon rings, the carbon ring on the outermost side is installed and fixed through a gland, and the carbon rings are in micro-contact sealing with the main shaft, the baffle, the gland and the expansion end guider to form a micro-contact matched floating type sealing structure, so that on one hand, mixed gas in the expansion machine is effectively prevented from leaking from a gap of the main shaft to the inside of a motor cavity to corrode the stator and the main shaft, and the motor is protected; on the other hand, the carbon ring is in micro-contact fit with the main shaft, so that the abrasion is very small, the friction heating amount is very low, the service life is long, and the sealing effect is more stable and reliable.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
In the figure, the motor comprises a motor shell 1, a motor shell 2, a stator 3, a main shaft 4, an expansion end bearing seat 5, an expansion end guider 6, an expansion impeller 7, an expansion shell 8, an expansion worm way 9, an expansion air inlet 10, an expansion air outlet 11, a carbon ring 12, a baffle 13, a gland 14, a labyrinth seal groove 15, a spring collar 16 and a sunk bolt.
The specific implementation mode is as follows:
in order to clearly explain the technical features of the present invention, the present invention will be explained in detail by the following embodiments and the accompanying drawings.
As shown in fig. 1-2, a floating sealing structure for an expander and a motor carbon ring comprises a motor housing 1, a stator 2 and a main shaft 3, wherein an expansion end bearing seat 4 for supporting the main shaft 3 is installed at the inner side of one end of the motor housing 1, an expansion end guide 5 is installed at the outer side of the expansion end bearing seat 4, an expansion impeller 6 is installed at one end of the main shaft 3, which penetrates through the expansion end guide 5, an expander housing 7 connected with the motor housing 1 is arranged at the outer side of the expansion impeller 6, an expansion worm channel 8 is arranged inside the expander housing 7, an expansion air inlet 9 and an expansion air outlet 10 are arranged on the expander housing 7, a plurality of floating carbon rings 11 are installed in a central hole of the expansion end guide, which is close to one side of the expander, a baffle 12 is installed between two adjacent carbon rings 11, the carbon ring 11 at the outermost side is installed and fixed through a gland 13, and the carbon rings 11 are in micro-contact sealing with the main shaft 3, the baffle 12, the gland 13 and the expansion end guide 5; a floating sealing structure matched with micro-contact is formed, so that on one hand, the mixed gas in the expansion machine is effectively prevented from leaking into the motor cavity from a gap of the main shaft 3 to corrode the stator 2 and the main shaft 3, and the motor is protected; on the other hand, the carbon ring 11 is in micro-contact fit with the spindle 3, so that the abrasion is small, the friction heating amount is low, the service life is long, and the sealing effect is more stable and reliable. One side of the central hole of the expansion end guider 5, which is close to the motor, is provided with a labyrinth seal groove 14, so that carbon powder abraded by the carbon ring 11 can be prevented from entering the expansion end bearing seat 4.
And an annular clamping groove is formed in the inner side of a central hole of the expansion end guider 5, and the carbon ring 11 is installed in the annular clamping groove in a floating mode.
The carbocycle 11 itself is generally an annular structure formed by combining multiple petals, a spring clamping ring 15 is arranged on the outer ring of the carbocycle 11, and the spring clamping ring 15 can enable the carbocycle 11 to always keep a micro-contact state with the spindle 3.
The baffle 12 and gland 13 are mounted on the expansion end guide 5 by means of countersunk bolts 16.
The working principle is as follows:
when the expansion turbine works, mixed gas exhausted after reaction in the fuel cell system enters the expansion gas inlet 9 and then enters the expansion worm way 8, the mixed gas pushes the expansion impeller 6 to rotate in the expansion worm way 8 to provide power for the main shaft 3 of the motor, and the mixed gas is finally exhausted from the expansion gas outlet 10 for subsequent reutilization.
The above-mentioned embodiment can not be regarded as right the utility model discloses the restriction of scope, to the technical person in this technical field, it is right the utility model discloses any alternative improvement or transform that the embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are known to those skilled in the art.
Claims (4)
1. The utility model provides an expander and motor carbocycle seal structure that floats which characterized in that: the expansion end bearing seat is arranged on the inner side of one end of the motor shell and used for supporting the spindle, an expansion end guider is arranged on the outer side of the expansion end bearing seat, one end of the spindle penetrates out of the expansion end guider and is provided with an expansion impeller, an expansion shell connected with the motor shell is arranged on the outer side of the expansion impeller, an expansion worm way is arranged inside the expansion shell, an expansion air inlet and an expansion air outlet are formed in the expansion shell, a plurality of floating carbon rings are arranged in a central hole of the expansion end guider, close to one side of the expansion shell, a baffle is arranged between every two adjacent carbon rings, the carbon ring on the outermost side is installed and fixed through a gland, and the carbon rings are in micro-contact sealing with the spindle, the baffle, the gland and the expansion end guider; and a labyrinth seal groove is arranged on one side of the expansion end guider close to the motor in the central hole.
2. The expander and motor carbon ring floating seal structure of claim 1, wherein: and an annular clamping groove is formed in the inner side of a central hole of the expansion end guider, and the carbon ring is installed in the annular clamping groove in a floating mode.
3. The expander and motor carbon ring floating seal structure of claim 1, wherein: the outer ring of the carbon ring is provided with a spring retainer ring.
4. The expander and motor carbon ring floating seal structure of claim 1, wherein: the baffle and the gland are mounted on the expansion end guider through countersunk bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221247145.8U CN218062405U (en) | 2022-05-23 | 2022-05-23 | Floating sealing structure for expander and motor carbon ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221247145.8U CN218062405U (en) | 2022-05-23 | 2022-05-23 | Floating sealing structure for expander and motor carbon ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218062405U true CN218062405U (en) | 2022-12-16 |
Family
ID=84432008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221247145.8U Active CN218062405U (en) | 2022-05-23 | 2022-05-23 | Floating sealing structure for expander and motor carbon ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218062405U (en) |
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2022
- 2022-05-23 CN CN202221247145.8U patent/CN218062405U/en active Active
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