CN201090499Y - Comb sealing ring for centrifugal compressor - Google Patents
Comb sealing ring for centrifugal compressor Download PDFInfo
- Publication number
- CN201090499Y CN201090499Y CNU2007200138252U CN200720013825U CN201090499Y CN 201090499 Y CN201090499 Y CN 201090499Y CN U2007200138252 U CNU2007200138252 U CN U2007200138252U CN 200720013825 U CN200720013825 U CN 200720013825U CN 201090499 Y CN201090499 Y CN 201090499Y
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- Prior art keywords
- sealing ring
- seal ring
- broach
- utility
- sealing
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- Expired - Fee Related
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a sealing technology of a centrifugal compressor, in particular to a toothed sealing ring used for a centrifugal compressor, for solving the problems that the collision between the teeth of the sealing ring and a rotating shaft in the traditional toothed sealing ring causes severe wear or deformation of the metal teeth, increases the gap for sealing and results in leakage and loss. The toothed sealing ring of the utility model is an integral structure formed by a metal core part and a plastic cover part; the teeth of the sealing ring are inclined. The metal core part insert of the utility model helps save the use level of plastic and control the cost of the sealing ring; meanwhile, the other stator parts of the compressor need no change; the inclined plastic teeth ensures the working gap of the sealing ring to be reduced by more than half of the original gap and achieves good sealing effect.
Description
Technical field
The utility model relates to centrifugal compressor sealing technique, particularly centrifugal compressor with broach (draw and do not make) seal ring.
Background technique
Labyrinth seal is one of the most frequently used motive sealing of industrial centrifugal compressor, and promptly expanding by multistage throttle produces damping to consume flowed energy, reduces air leakage, plays seal action.Being in proportion of the air leakage of this sealing and gap is so the sealing effect that will obtain must reduce seal clearance.But then, little seal clearance has increased seal ring contacted and bumped mill with rotating shaft probability, damages seal ring easily and increases seal clearance, causes leakage loss; Also can abrade rotating shaft and jeopardize unit safety operation when serious.Therefore, the seal performance of centrifugal compressor sealing and the use condition important indicator that is compressor design.
Traditional labyrinth seal ring adopts softer metal such as aluminum alloy and bigger seal clearance more, to avoid the scratch of countershaft as far as possible.But owing to reasons such as vibrations, the mill that bumps of seal ring broach and rotating shaft can take place inevitably in actual motion.This mill that bumps usually causes the heavy wear of metal broach or permanent deformation takes place, and has increased seal clearance, causes big leakage loss, has increased the operating cost of compressor simultaneously.
The model utility content
In order to solve above-mentioned deficiency, the purpose of this utility model has been to provide a kind of new centrifugal compressor with favorable elasticity and wear-resisting property special engineering plastics labyrinth seal ring, solve the mill that bumps that seal ring broach and rotating shaft are given birth in traditional labyrinth seal environment-development, thereby cause the heavy wear or the distortion of metal broach, increase seal clearance, cause problems such as leakage loss.
The purpose of this utility model is achieved through the following technical solutions:
Centrifugal compressor labyrinth seal ring, labyrinth seal ring are the integral structure that core, coating portion constitute.
Wherein, can adopt concavo-convex chimeric ruggedized construction between core and the coating portion.
Wherein, core can be metal-cored portion, and coating portion can be plastic overmold portion.
Wherein, the broach of seal ring can adopt the helical teeth structure.
Wherein, the lee face of each broach and seal ring angle radially can be 25～35 °, and the windward side of each broach and seal ring radially angle can be 0～10 °.
The beneficial effects of the utility model are:
1, the utility model adopts the special engineering plastics with very good mechanical properties and favorable elasticity deformability; The high strength of material and heat resistance are the requirements of working conditions of compressor, and elastic strain ability and wearability then are the anti-requirements of bumping mill and keeping sealability of seal ring; Plastic material can be guaranteed to bump and grinds not entail dangers to rotating shaft.
2, the utility model adopts special broach tooth Shape Design, gives sealing tooth certain structure amount of deflection, makes full use of the excellent comprehensive performance of special engineering plastics; Design sealing broach profile of tooth by FEM (finite element) calculation and pneumatic analog optimization, taken into account the needs of seal performance, broach rigidity and structural deflection, can make a concrete analysis of according to the operating mode characteristics at sealing position.
3, the utility model adopts the incorporate structural design of metal-plastic, has rationally utilized special engineering plastics and metallic material advantage separately, has guaranteed rigidity, toughness, elasticity and the dimensional stability of seal ring; The seal ring core is a metal, has both reduced expensive quantity of plastics, saves cost greatly, can also use the design and the processing experience of conventional metals labyrinth seal more easily.
Description of drawings
Fig. 1 is a cross-sectional view of the present utility model;
Fig. 2 is a broach tooth-shape structure schematic representation of the present utility model.
Among the figure, 1 core; 2 coating portions; 3, recess; 4, protuberance; 5 broach; 6 broach lee faces; 7 broach windward sides.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model adopts the incorporate structural design of metal-plastic, seal ring core 1 is the metal core, and outside three bread cover portion 2 and are special engineering plastics, adopts the concavo-convex chimeric ruggedized construction of recess 3 and protuberance 4 between metal core 1 and the plastic overmold portion 2.The rigidity of seal ring, toughness, elasticity and dimensional stability are well guaranteed.
Special engineering plastics in the utility model comprise polyimide (Polyimide, PI), polyether-ether-ketone (Polyetheretherketone, PEEK) and polyamide-imides (Polyamide-imide, PAI) contour performance thermoplastic engineering plastic.
As shown in Figure 2, the broach 5 of seal ring adopts the helical teeth design, has given full play to plastics better elastic and toughness.When practice, stress distribution and seal performance requirement according to broach under the concrete operating mode, provide the actual grade of broach by computer simulation: in general, broach lee face 6 and seal ring radially angle are about 25～35 °, and broach windward side 7 and seal ring radially angle are about 0～10 °.Inclination broach anti-bumps mill property and seal performance, and all the symmetric figure broach than traditional is good.
Characteristics of the present utility model are: metal core inserts has been saved quantity of plastics, has controlled the cost of sealing ring, Increase rigidity and the dimensional stability of sealing ring, need not change other stator component of compressor simultaneously; Tilt The plastics broach that the comparable original gap of working clearance of sealing ring is dwindled is over half, reach well and obturage Effect.
Claims (5)
1. centrifugal compressor labyrinth seal ring is characterized in that: the labyrinth seal ring is the integral structure that core, coating portion constitute.
2. according to the described labyrinth seal ring of claim 1, it is characterized in that: adopt concavo-convex chimeric ruggedized construction between core and the coating portion.
3. according to the described labyrinth seal ring of claim 1, it is characterized in that: core is the metal core, and coating portion is a plastic overmold portion.
4. according to the described labyrinth seal ring of claim 1, it is characterized in that: the broach of seal ring adopts the helical teeth structure.
5. according to the described labyrinth seal ring of claim 4, it is characterized in that: the lee face of each broach and seal ring angle radially is 25～35 °, and the windward side of each broach and seal ring radially angle are 0～10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200138252U CN201090499Y (en) | 2007-08-15 | 2007-08-15 | Comb sealing ring for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200138252U CN201090499Y (en) | 2007-08-15 | 2007-08-15 | Comb sealing ring for centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090499Y true CN201090499Y (en) | 2008-07-23 |
Family
ID=39862260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200138252U Expired - Fee Related CN201090499Y (en) | 2007-08-15 | 2007-08-15 | Comb sealing ring for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090499Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032347A (en) * | 2011-09-28 | 2013-04-10 | 珠海格力电器股份有限公司 | Centrifugal compressor with insulation structure |
| CN108708862A (en) * | 2018-03-30 | 2018-10-26 | 重庆美的通用制冷设备有限公司 | The compression assembly and centrifugal compressor of centrifugal compressor |
-
2007
- 2007-08-15 CN CNU2007200138252U patent/CN201090499Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032347A (en) * | 2011-09-28 | 2013-04-10 | 珠海格力电器股份有限公司 | Centrifugal compressor with insulation structure |
| CN103032347B (en) * | 2011-09-28 | 2015-08-19 | 珠海格力电器股份有限公司 | There is the centrifugal compressor of isolation structure |
| CN108708862A (en) * | 2018-03-30 | 2018-10-26 | 重庆美的通用制冷设备有限公司 | The compression assembly and centrifugal compressor of centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENYANG BLOWER WORKS GROUP CORPORATION Free format text: FORMER NAME: SHENYANG BLOWER WORKS (GROUP) CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: 110869 Shenyang economic and Technological Development Zone, Liaoning development road, a No. 16 Patentee after: Shenyang Blower Works Group Corporation Address before: 110142 No. 16, development road, Zhang Shi economic and Technological Development Zone, Liaoning, Shenyang Patentee before: Shenyang Blower Works (Group) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20150815 |
|
| EXPY | Termination of patent right or utility model |