CN206234156U - A kind of axial labyrinth seal structure of gear centrifugal turbo-compressor - Google Patents
A kind of axial labyrinth seal structure of gear centrifugal turbo-compressor Download PDFInfo
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- CN206234156U CN206234156U CN201621250875.8U CN201621250875U CN206234156U CN 206234156 U CN206234156 U CN 206234156U CN 201621250875 U CN201621250875 U CN 201621250875U CN 206234156 U CN206234156 U CN 206234156U
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Abstract
A kind of axial labyrinth seal structure of gear centrifugal turbo-compressor, it is mainly made up of sealer main body, slice-shaped sealing tooth, described sealer main body is bolted on spiral case body sidewall, and it is being disposed with multiple vertical configuration grooves vertically in the sealer main body wall of wheel backface, and slice-shaped sealing tooth is inlaid with a groove, the external part of slice-shaped sealing tooth keeps certain gap near wheel backface with impeller back wall；Described slice-shaped sealing tooth inner hollow, and it is plugged with the press strip by slice-shaped sealing tooth compacting in sealer body recess from outside to inside in hollow cavity；Described sealer main body is made of steel, and slice-shaped sealing tooth and press strip are made of copper material or other softer metals respectively；It has simple structure, and reliability is high, and process equipment is less demanding, and processing cost is low, is easily repaired after damage, the features such as easy for installation.
Description
Technical field
The utility model relates to a kind of gear centrifugal turbo-compressor axial direction labyrinth seal structure, it is primarily adapted for use in
The compressor shafts such as only one gear centrifugal turbo-compressor of half-opened impeller are difficult to equilibrate in tolerance interval to power
Situation, belong to gear centrifugal turbo-compressor technical field.
Background technology
In the practical application of current overwhelming majority gear centrifugal turbo-compressor, motor compresses with gear centrifugal turbine
The Large Gear Shaft of machine is connected, and then coordinates transmitting torque by gear wheel and mill pinlon shaft gear, and mill pinlon axle is reached design
Rotating speed, is connected in the impeller of mill pinlon shaft end to gas medium work done, gas pressure is improved and flow velocity increase.
The rising of gas pressure, makes impeller produce an axial thrust；The summation of each impeller axial thrust, is exactly whole turning
The axial force of son, this axial force is undertaken by thrust bearing；The axial thrust of single impeller is often very big, it is necessary to pass through
Each impeller dorsad arranges and adds that the modes such as balancing frame are reduced in zone of reasonableness, it is ensured that the reliability of thrust bearing.
For there was only a gear centrifugal turbo-compressor for impeller, the axial thrust of single impeller is all by only
Thrust bearing undertakes.Now the traditional method of balancing axial thrust is the mode that balancing frame is added on mill pinlon axle, but therefore very may be used
The inconvenience that mill pinlon axle can be caused to dismount, or even influence the rotor dynamics performance of compressor.Therefore it is badly in need of looking for another way to advise
Keep away the harmful effect brought by balancing axial thrust conventional method.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that prior art is present, and it is low, reliable to provide a kind of processing cost
Property high, simple structure, can play reduction external leakage effect, can be compressed machine axial force regulation gear centrifugal turbine pressure
The axial labyrinth seal structure of contracting machine.
The purpose of this utility model is completed by following technical solution, a kind of gear centrifugal turbo-compressor
Axial labyrinth seal structure, it is mainly made up of sealer main body, slice-shaped sealing tooth, and described sealer main body passes through bolt
It is fixed on spiral case body sidewall, and it is multiple vertical being disposed with vertically in the sealer main body wall of wheel backface
Shape groove, and slice-shaped sealing tooth is inlaid with a groove, the external part of slice-shaped sealing tooth is near wheel backface, and and leaf
Wheel back wall keeps certain gap.
As preferred：Described slice-shaped sealing tooth inner hollow, and be plugged with from outside to inside in hollow cavity by
Press strip of the slice-shaped sealing tooth compacting in sealer body recess；Described sealer main body is made of steel, and slice-shaped is close
Envelope tooth and press strip are made of copper material or other softer metals respectively.
The utility model has simple structure, and reliability is high, and process equipment is less demanding, and processing cost is low, holds after damage
Easily repair, the features such as easy for installation；Simultaneously avoid deteriorate rotor dynamics possibility, and reduce mill pinlon axle dismounting be stranded
It is difficult.
Brief description of the drawings
Fig. 1 is that the utility model installs and uses structural representation.
Fig. 2 is structural representation of the present utility model.
Specific embodiment
The utility model is described in detail below in conjunction with accompanying drawing：Shown in Fig. 1, a kind of gear centrifugation of the utility model
The axial labyrinth seal structure of formula turbocompressor, it is mainly made up of sealer main body 1, slice-shaped sealing tooth 2, and described is close
Envelope device main body 1 is fixed on the body sidewall of spiral case 6 by bolt 7, and on the edge on the side wall of sealer main body 1 at the back side of impeller 4
Multiple vertical configuration grooves are axially disposed with, and are inlaid with slice-shaped sealing tooth 2 in a groove, slice-shaped sealing tooth 2
External part keeps certain gap near the back side of impeller 4 with the back wall of impeller 4.
With reference to shown in Fig. 2, the described slice-shaped sealing inner hollow of tooth 2, and the grafting from outside to inside in hollow cavity
Have and slice-shaped sealing tooth 2 is compacted the press strip 3 in the groove of sealer main body 1；Described sealer main body 1 is made of steel,
Slice-shaped seals tooth 2 and press strip 3 is made of copper material or other softer metals respectively.
The present invention is a kind of axial direction labyrinth seal of gear centrifugal turbo-compressor, as the term suggests, its sealing tooth direction is flat
Row is otherwise varied with traditional radial seal in rotation direction of principal axis.
Because compressor operating gas medium is higher than atmospheric environmental pressure, external leakage is certainly existed, as illustrated, a part of
Gas forms the radial seal clearance leakage in gap to air by the utility model axial direction labyrinth seal clearance and with main shaft
In environment.
When external leakage gas passes through seal clearance, approximate one preferable throttling process, pressure, temperature drop, speed increases.When
During into cavity, flow area expands rapidly, and air-flow forms very strong whirlpool, air velocity is almost wholly absent；Pressure is near
Approximately equal to pressure in seal clearance, temperature be then returned to sealing tooth before numerical value.Air-flow is all repeated by each gap and cavity
Said process.Except that gas density is less and less, the air velocity and pressure drop during by gap are increasing, work as air-flow
By after all sealing teeth, the final convergence of pressure and atmospheric pressure, and it is temperature-resistant.Often by a sealing tooth, equivalent to section
Stream is once.Repeatedly throttling, limited reduces the leakage quantity that leaks, and serves the effect of sealing.
The present invention can form the quantity of circle diameter and sealing tooth by adjusting sealing tooth, change whole impeller axial direction
The size of thrust, and then the axial force of whole compressor is reduced in zone of reasonableness, it is ensured that the reliability of thrust bearing.
Claims (2)
1. a kind of axial labyrinth seal structure of gear centrifugal turbo-compressor, it is mainly by sealer main body（1）, slice-shaped
Sealing tooth（2）Composition, it is characterised in that described sealer main body（1）By bolt（7）It is fixed on spiral case（6）On body sidewall,
And near impeller（4）The sealer main body at the back side（1）Multiple vertical configuration grooves are disposed with the wall of side vertically, and recessed
Slice-shaped sealing tooth is inlaid with groove（2）, slice-shaped sealing tooth（2）External part near impeller（4）The back side, and and impeller
（4）Back wall keeps certain gap.
2. the axial labyrinth seal structure of gear centrifugal turbo-compressor according to claim 1, it is characterised in that institute
The slice-shaped sealing tooth stated（2）Inner hollow, and be plugged with from outside to inside in hollow cavity slice-shaped is sealed into tooth（2）Pressure
Tangible sealer main body（1）Press strip in groove（3）；Described sealer main body（1）It is made of steel, slice-shaped sealing tooth
（2）And press strip（3）It is made of copper material or other softer metals respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250875.8U CN206234156U (en) | 2016-11-22 | 2016-11-22 | A kind of axial labyrinth seal structure of gear centrifugal turbo-compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250875.8U CN206234156U (en) | 2016-11-22 | 2016-11-22 | A kind of axial labyrinth seal structure of gear centrifugal turbo-compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206234156U true CN206234156U (en) | 2017-06-09 |
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ID=58991672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621250875.8U Active CN206234156U (en) | 2016-11-22 | 2016-11-22 | A kind of axial labyrinth seal structure of gear centrifugal turbo-compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN206234156U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026761A (en) * | 2018-10-18 | 2018-12-18 | 毕森机械（上海）有限公司 | A kind of compressor host |
| CN111828393A (en) * | 2020-08-20 | 2020-10-27 | 新奥能源动力科技（上海）有限公司 | Diffuser, impeller and centrifugal compressor |
-
2016
- 2016-11-22 CN CN201621250875.8U patent/CN206234156U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026761A (en) * | 2018-10-18 | 2018-12-18 | 毕森机械（上海）有限公司 | A kind of compressor host |
| CN111828393A (en) * | 2020-08-20 | 2020-10-27 | 新奥能源动力科技（上海）有限公司 | Diffuser, impeller and centrifugal compressor |
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