CN201661319U - Stepped isodiametric maze sealing structure for main shaft of expansion machine - Google Patents
Stepped isodiametric maze sealing structure for main shaft of expansion machine Download PDFInfo
- Publication number
- CN201661319U CN201661319U CN2010201635593U CN201020163559U CN201661319U CN 201661319 U CN201661319 U CN 201661319U CN 2010201635593 U CN2010201635593 U CN 2010201635593U CN 201020163559 U CN201020163559 U CN 201020163559U CN 201661319 U CN201661319 U CN 201661319U
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- Prior art keywords
- main shaft
- stepped
- isodiametric
- tooth
- sealing
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- 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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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a stepped isodiametric maze sealing structure for the main shaft of an expansion machine. The stepped isodiametric maze sealing structure comprises a main shaft and a sealing sleeve, wherein the main shaft is provided with a plurality of sections of isodiametric stepped gear shafts, the sealing sleeve is sleeved on the stepped gear shafts, and the inner chamber of the sealing sleeve is provided with stepped maze sealing structures which have the same quantity as the gear shafts of the main shaft and are in close fit with the top parts of all sections of gear shafts. The utility model has the advantages of simple and easy manufacture, convenient repair, good sealing performance, and high running stability and reliability during the operation.
Description
Technical field
The utility model relates to the shaft sealing technical field, particularly a kind of decompressor main shaft labyrinth seal structure.
Background technique
At present, the turbo-expander sealing of spindles all is the labyrinth seal structure that adopts basically, as depicted in figs. 1 and 2, specifically can be divided into equal coupling and taper bypass structure.Equal coupling is simple in structure, processes very conveniently, and it is reliable and stable to turn round, and installation and maintenance are time saving and energy saving.The straight-through sealing of taper, effect is better than equal coupling under the normal condition, but because its structure relative complex, same tapering to stuffing box gland and main shaft requires very high, therefore just very high to the required precision of process equipment, generally on numerical control machine tool, process, installation and maintenance simultaneously are also difficult.In a single day adjust badly during installation, reveal just even more seriously, what exist during especially machine runs well axially jumps, and notable change can take place seal clearance, and its stability, reliability are not as good as the equal coupling structure to a certain extent.
The model utility content
The purpose of this utility model is: provide that a kind of manufacturing is simple, easy to maintenance, good seal performance, stability in service and the high isometrical labyrinth seal structure of decompressor main shaft cascade of reliability.
The purpose of this utility model realizes by adopting following technological scheme:
The isometrical labyrinth seal structure of a kind of decompressor main shaft cascade, include main shaft and stuffing box gland, main shaft is to have the several sections cascade tooth axles that difference is isometrical, on this cascade tooth axle, be set with described stuffing box gland, the inner chamber of sealing cover be have identical with main shaft tooth shaft part number, with the step labyrinth chamber of each section axle tooth top portion close fit.
The beneficial effects of the utility model are:
Because main shaft is to have several sections cascade tooth axles that difference is isometrical, every section interior axle tooth of tooth axle all has equal tooth footpath, and be sleeved on stuffing box gland on this main shaft tooth axle, its cavity body structure and main shaft tooth axle construction are complementary, this sealing configuration combines the advantage of whole section equal coupling and the straight-through two kinds of labyrinth seal structures of taper, the advantage that the processing of existing whole section equal coupling is simple, easy to maintenance, reliable and stable also has taper to lead directly to good sealing effect, advantage that amount of leakage is few.Because the axial runout in the cone seal can not appear in seal clearance in the running, the stability and the reliability of sealing all are improved.
Description of drawings
Fig. 1 is an equal coupling labyrinth seal structure schematic representation.
Fig. 2 is the straight-through labyrinth seal structure schematic representation of taper.
Fig. 3 is the utility model sealed structural representation.
Reference character: the 1st, main shaft, the 2nd, tooth, the 3rd, stuffing box gland.
Embodiment
As shown in Figure 3, the isometrical labyrinth seal structure of a kind of decompressor main shaft cascade, form by main shaft 1 and stuffing box gland 3, main shaft 1 is for having the several sections cascade tooth axles that difference is isometrical, promptly, be processed with tooth 2 on the main shaft 1, on this cascade tooth axle, be set with stuffing box gland 3, the inner chamber of sealing cover 3 be have identical with main shaft 1 tooth shaft part number, with the step labyrinth chamber of each section axle tooth top portion close fit.
Claims (1)
1. isometrical labyrinth seal structure of decompressor main shaft cascade, include main shaft (1) and stuffing box gland (3), it is characterized in that, described main shaft (1) is for having the several sections cascade tooth axles that difference is isometrical, on this cascade tooth axle, be set with described stuffing box gland (3), the inner chamber of sealing cover (3) be have identical with main shaft tooth shaft part number, with the step labyrinth chamber of each section axle tooth top portion close fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201635593U CN201661319U (en) | 2010-04-16 | 2010-04-16 | Stepped isodiametric maze sealing structure for main shaft of expansion machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201635593U CN201661319U (en) | 2010-04-16 | 2010-04-16 | Stepped isodiametric maze sealing structure for main shaft of expansion machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661319U true CN201661319U (en) | 2010-12-01 |
Family
ID=43231734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201635593U Expired - Lifetime CN201661319U (en) | 2010-04-16 | 2010-04-16 | Stepped isodiametric maze sealing structure for main shaft of expansion machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661319U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434486A (en) * | 2010-09-29 | 2012-05-02 | 株式会社神户制钢所 | Shaft sealing device for rotary equipment |
| CN107084244A (en) * | 2017-06-15 | 2017-08-22 | 中国科学院工程热物理研究所 | Comb tooth and floating ring combined sealing structure |
| CN112894617A (en) * | 2021-01-14 | 2021-06-04 | 浙江大润机床有限公司 | Lubricated and waterproof top subassembly and lubricated cooling system thereof |
-
2010
- 2010-04-16 CN CN2010201635593U patent/CN201661319U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434486A (en) * | 2010-09-29 | 2012-05-02 | 株式会社神户制钢所 | Shaft sealing device for rotary equipment |
| CN102434486B (en) * | 2010-09-29 | 2015-06-03 | 株式会社神户制钢所 | Shaft sealing device for rotary equipment |
| CN107084244A (en) * | 2017-06-15 | 2017-08-22 | 中国科学院工程热物理研究所 | Comb tooth and floating ring combined sealing structure |
| CN107084244B (en) * | 2017-06-15 | 2018-10-12 | 中国科学院工程热物理研究所 | Comb tooth and floating ring combined sealing structure |
| CN112894617A (en) * | 2021-01-14 | 2021-06-04 | 浙江大润机床有限公司 | Lubricated and waterproof top subassembly and lubricated cooling system thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |