CN208546196U - A kind of Honeycomb Steam seal part can be improved unit efficiency - Google Patents
A kind of Honeycomb Steam seal part can be improved unit efficiency Download PDFInfo
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- CN208546196U CN208546196U CN201821091428.1U CN201821091428U CN208546196U CN 208546196 U CN208546196 U CN 208546196U CN 201821091428 U CN201821091428 U CN 201821091428U CN 208546196 U CN208546196 U CN 208546196U
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- steam seal
- cellular band
- tooth
- honeycomb steam
- honeycomb
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Abstract
The utility model discloses a kind of Honeycomb Steam seal parts that can be improved unit efficiency, including main shaft, high tooth, low tooth, honeycomb steam seal, ring body, cellular band, groove, labyrinth casing and spring.The beneficial effects of the utility model are: using stage teeth labyrinth casing, former gland seal structure is not changed, cellular band is fixed on labyrinth casing using Vacuum Soldering Technology, cellular band is made using the Ni-based high-temperature alloy that thickness is only 0.05~0.10mm through special manufacturing process, will not generate abrasion to any steel object in contact；Cellular band is overlapped into regular hexagon shape, making it in the height direction has enough intensity, Honeycomb steam seal can keep lesser fit clearance with axle journal, reach good sealing effect, cellular band will not influence sealing effect because of the variation in structure, can reduce leakage loss, the steam flow excitation for reducing rotor, improve unit safety in operation, stability, extend blade service life, improve unit efficiency, reduce energy consumption.
Description
Technical field
The utility model relates to a kind of sealing element, specially a kind of Honeycomb Steam seal part that can be improved unit efficiency belongs to
In Steam Turbine Sealing Technologies field.
Background technique
Honeycomb seal is mechanical term, is made of seal and cellular band, and main function is to prevent steam turbine, internal combustion engine etc.
Fluid machinery runs at high speed the internal and outernal leakage of the working media of shafting, lubricant medium or cooling medium, in favor of improving fluid machine
The efficiency of tool, energy saving, protection environment and realization are safely and steadily run.Wherein, cellular band and seal combine, described
Magnetic pole is additionally provided on seal, band and seal group are combined into float type setting, and the side that seal and cellular band combine is also
Equipped with sealing tooth, tooth and band stagger arrangement setting are sealed, cylinder body is directly connected on the outside of seal, is equipped with adjustment block in cylinder body,
Honeycomb Steam seal was the sealing on U.S. space shuttle liquid fuel turbine pump originally, be in non-contact seals the most safety and obturage
A kind of effective sealing, in the U.S., Westinghouse Electric applies it to steam turbine earliest, is mainly used on low pressure (LP) cylinder leaf top
Dehumidifying, in recent years, start to be widely used on steam turbine, as prevent steam leakage, energy-saving high-tech product, and
The technological transformation for carrying out the whole cylinder Honeycomb steam seal of complete machine comprehensively, improves unit safety economical operation significant effect.
But existing steam turbine honeycomb formula sealing element still remains more deficiency, first, leakage loss is more serious, simultaneously
The steam flow excitation of rotor can not be reduced, second, unit safety in operation, stability are lower, blade is caused to be easily damaged, is influenced
The service life of blade, third, unit efficiency is lower, energy consumption is larger.
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of bee that can be improved unit efficiency
Socket sealing element.
The utility model achieves the above object through the following technical schemes: a kind of honeycomb fashion that can be improved unit efficiency
Sealing element, including main shaft, high tooth, low tooth, honeycomb steam seal, ring body, cellular band, groove, labyrinth casing and spring；The main shaft is set
It sets and offers high tooth and low tooth on the lower section of honeycomb steam seal, the main shaft, the high tooth and low tooth are in cross-distribution, described
Ring body and groove are provided on honeycomb steam seal, the ring body is located at the bottom end of honeycomb steam seal, and the groove is located at honeycomb fashion
The top of packing, the cellular band are mounted in ring body, and the labyrinth casing is placed in the top of honeycomb steam seal, the groove card
It is placed in labyrinth casing, the spring is arranged between groove and labyrinth casing, and the spring is placed in groove.
Preferably, in order to protect main shaft not to be worn, and avoid cellular band by foreign matter impact damage, the cellular band is than low
Tooth is higher by a part, and high tooth is higher by a part than cellular band.
Preferably, in order to play optimal throttling sealing effect, the high tooth is located at the two sides of low tooth, and low teeth portion
Divide and is filled up with cellular band.
Preferably, there is enough intensity in order to make cellular band in the height direction, it will not be described at the time of contact by crushing
Cellular band is overlapped into regular hexagon shape.
Preferably, in order not to change former gland seal structure, simplify installation procedure, the Honeycomb Steam seal part installation does not need to change
Become rotor structure.
Preferably, in order to avoid generating abrasion to any steel object in contact, the cellular band with a thickness of
0.05~0.10mm, and be made using Ni-based high-temperature alloy through special manufacturing process.
The beneficial effects of the utility model are: this can be improved the Honeycomb Steam seal part design of unit efficiency rationally, honeycomb
Band is higher by a part than low tooth, and high tooth is higher by a part than cellular band, i.e. main shaft first contacts and different high toe joints with cellular band
Touching, so that main shaft be protected not to be worn, and can be avoided cellular band by foreign matter impact damage, high tooth is located at the two of low tooth
Side, and low tooth part is filled up with cellular band, high tooth still retains, throttling sealing effect is played, and air-flow enters after reducing pressure by regulating flow
Honeycomb zone further increases sealing effect, and optimal effect is played in two kinds of sealing technique integrated applications, and cellular band is overlapped into
Regular hexagon shape, making it in the height direction has enough intensity, will not be at the time of contact by crushing, and then makes honeycomb steam seal
Lesser fit clearance can be kept with the axle journal of main shaft, reach good sealing effect, the installation of Honeycomb Steam seal part does not need to change
Become rotor structure, do not change former gland seal structure, simplify installation procedure, cellular band with a thickness of 0.05~O.10mm, and using Ni-based
High-temperature alloy is made through special manufacturing process, keeps honeycomb band structure more frivolous, hardness also very little, will not be to contacting
Any steel object generate abrasion.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the utility model honeycomb band schematic diagram.
In figure: 1, main shaft, 2, high tooth, 3, low tooth, 4, honeycomb steam seal, 5, ring body, 6, cellular band, 7, groove, 8, packing
Body and 9, spring.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1~2, a kind of Honeycomb Steam seal part can be improved unit efficiency, including main shaft 1, high tooth 2, low tooth
3, honeycomb steam seal 4, ring body 5, cellular band 6, groove 7, labyrinth casing 8 and spring 9；Honeycomb steam seal 4 is arranged in the main shaft 1
Lower section offers high tooth 2 and low tooth 3 on the main shaft 1, and the high tooth 2 and low tooth 3 are in cross-distribution, the honeycomb steam seal
Ring body 5 and groove 7 are provided on 4, the ring body 5 is located at the bottom end of honeycomb steam seal 4, and the groove 7 is located at honeycomb steam seal 4
Top, the cellular band 6 is mounted in ring body 5, and the labyrinth casing 8 is placed in the top of honeycomb steam seal 4, the groove 7
Card is placed in labyrinth casing 8, and the spring 9 is arranged between groove 7 and labyrinth casing 8, and the spring 9 is placed in groove 7.
The cellular band 6 is higher by a part than low tooth 3, and high tooth 2 is higher by a part, the i.e. first same bee of main shaft 1 than cellular band 6
Nest band 6 contacts and different high teeth 2 contact, so that main shaft 1 be protected not to be worn, and can be avoided cellular band 6 and hits damage by foreign matter
Wound, the high tooth 2 is located at the two sides of low tooth 3, and 3 part cellular band 6 of low tooth fills up, and high tooth 2 still retains, and plays throttling
Sealing effect, and air-flow enters 6th area of cellular band after reducing pressure by regulating flow, further increases sealing effect, two kinds of sealing techniques are comprehensive
Using playing optimal effect, the cellular band 6 is overlapped into regular hexagon shape, makes it in the height direction and has and is enough strong
Degree, will not be at the time of contact by crushing, and then makes honeycomb steam seal 4 that can keep lesser fit clearance with the axle journal of main shaft 1, reaches
Good sealing effect, the installation of Honeycomb Steam seal part 4 have no need to change rotor structure, do not change former gland seal structure, simplify
Installation procedure, the cellular band 6 use Ni-based high-temperature alloy through special manufacturing process system with a thickness of 0.05~0.10mm
At keeping 6 structure of cellular band more frivolous, hardness also very little will not generate abrasion to any steel object in contact.
Working principle: when can be improved the Honeycomb Steam seal part of unit efficiency using this, by Ni-based high-temperature alloy system
At cellular band 6 and ring body 5 form, be mounted on honeycomb steam seal 4, tactic pattern is that stage teeth is spaced, by cellular band 6
It is welded in ring body 5, the tooth-like Honeycomb steam seal of height is the perfect combination of cellular technology and labyrinth gland, and sealing effect is labyrinth
The comprehensive composition of effect and cellular effect, is high efficiency, stability and the perfect combination of safety, main design idea be
In the thin toothing of original, retain high tooth 2, is filled up in low 3 place of tooth with cellular band 6.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of Honeycomb Steam seal part that can be improved unit efficiency, it is characterised in that: including main shaft (1), high tooth (2), low tooth
(3), honeycomb steam seal (4), ring body (5), cellular band (6), groove (7), labyrinth casing (8) and spring (9)；The main shaft (1) sets
The lower section in honeycomb steam seal (4) is set, high tooth (2) and low tooth (3), the high tooth (2) and low tooth are offered on the main shaft (1)
(3) it is in cross-distribution, ring body (5) and groove (7) is provided on the honeycomb steam seal (4), the ring body (5) is located at honeycomb fashion
The bottom end of packing (4), the groove (7) are located at the top of honeycomb steam seal (4), and the cellular band (6) is mounted on ring body (5)
On, the labyrinth casing (8) is placed in the top of honeycomb steam seal (4), and groove (7) card is placed in labyrinth casing (8), the bullet
Spring (9) is arranged between groove (7) and labyrinth casing (8), and the spring (9) is placed in groove (7).
2. a kind of Honeycomb Steam seal part that can be improved unit efficiency according to claim 1, it is characterised in that: the bee
Nest band (6) is higher by a part than low tooth (3), and high tooth (2) is higher by a part than cellular band (6).
3. a kind of Honeycomb Steam seal part that can be improved unit efficiency according to claim 1, it is characterised in that: the height
Tooth (2) is located at the two sides of low tooth (3), and low tooth (3) is partially filled up with cellular band (6).
4. a kind of Honeycomb Steam seal part that can be improved unit efficiency according to claim 1, it is characterised in that: the bee
Nest band (6) is overlapped into regular hexagon shape.
5. a kind of Honeycomb Steam seal part that can be improved unit efficiency according to claim 1, it is characterised in that: the bee
Socket packing (4) installation haves no need to change rotor structure.
6. a kind of Honeycomb Steam seal part that can be improved unit efficiency according to claim 1, it is characterised in that: the bee
Nest band (6) is with a thickness of 0.05~0.10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821091428.1U CN208546196U (en) | 2018-07-11 | 2018-07-11 | A kind of Honeycomb Steam seal part can be improved unit efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821091428.1U CN208546196U (en) | 2018-07-11 | 2018-07-11 | A kind of Honeycomb Steam seal part can be improved unit efficiency |
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| Publication Number | Publication Date |
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| CN208546196U true CN208546196U (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821091428.1U Active CN208546196U (en) | 2018-07-11 | 2018-07-11 | A kind of Honeycomb Steam seal part can be improved unit efficiency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575935A (en) * | 2022-03-01 | 2022-06-03 | 西安热工研究院有限公司 | Self-adaptive flexible steam turbine shaft seal structure |
-
2018
- 2018-07-11 CN CN201821091428.1U patent/CN208546196U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575935A (en) * | 2022-03-01 | 2022-06-03 | 西安热工研究院有限公司 | Self-adaptive flexible steam turbine shaft seal structure |
| CN114575935B (en) * | 2022-03-01 | 2024-01-23 | 西安热工研究院有限公司 | Self-adaptive flexible steam turbine shaft seal structure |
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