CN215256337U - Steam seal device for steam turbine generator - Google Patents
Steam seal device for steam turbine generator Download PDFInfo
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- CN215256337U CN215256337U CN202121185258.5U CN202121185258U CN215256337U CN 215256337 U CN215256337 U CN 215256337U CN 202121185258 U CN202121185258 U CN 202121185258U CN 215256337 U CN215256337 U CN 215256337U
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Abstract
The utility model discloses a steam sealing device for a steam turbine generator, which comprises a steam sealing body, wherein first grooves are equidistantly formed in the bottom end of the steam sealing body, inserting blocks are slidably inserted into the first grooves, and high-tooth sealing strips are fixed at the bottom ends of the inserting blocks; the utility model discloses a set up the jack on the inserted block and sliding connection bolt in the spout, thereby make high tooth sealing strip convenient to detach change when damaging, rotate through the drive lead screw, make gallows on the lead screw along the lead screw displacement and drive the lift of short tooth sealing strip through elastic buffer mechanism, thereby make low tooth sealing strip be convenient for carry out flexible regulation according to the vapor seal needs, thereby make the vapor seal effect better, set up through the labyrinth cavity, thermodynamic effect and friction effect have been increased, play very good effect of damming to the strong turbulent phenomenon of steam air current, the effect of vortex deceleration has been increased, the unit air leakage volume has been reduced, the combined use of high tooth sealing strip of deuterogamying and short tooth sealing strip, the vapor seal effect has further been improved.
Description
Technical Field
The utility model relates to a turbo generator technical field especially relates to a steam seal device for turbo generator.
Background
The turbonator is a generator driven by a steam turbine, superheated steam generated by a boiler enters the turbonator to expand and do work, blades are driven to rotate to drive the generator to generate electricity, waste steam after the work is done is sent back to the boiler for recycling through a condenser, a circulating water pump, a condensate pump, a feed water heating device and the like, the turbonator is one of synchronous generators, a steam turbine is used as a prime mover to drive a rotor to rotate, mechanical energy is converted into electric energy through an electromagnetic induction principle, the electric equipment is mainly applied to a thermal power plant or a nuclear power plant, and the turbonator needs to be sealed through a steam sealing device in order to reduce steam leakage in the working process of the turbonator;
traditional vapor seal device for turbonator is mostly single structure, generally realize the vapor seal through high tooth sealing strip and end tooth sealing strip combination, high tooth sealing strip and end tooth sealing strip and vapor seal body formula fixed knot structure as an organic whole lead to high tooth sealing strip can not dismantle the installation, thereby need to change whole vapor seal device simultaneously easily under the condition that a set of high tooth sealing strip damaged, it is inconvenient to use, the practicality is not high, increased equipment cost, low tooth sealing strip still can not stretch out and draw back as required and adjust in addition, thereby lead to the vapor seal effect relatively poor, therefore, the utility model provides a vapor seal device for turbonator is used for solving the problem that exists among the prior art.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, an object of the utility model is to provide a steam seal device for turbo generator, this steam seal device for turbo generator is through offering the jack on the inserted block and sliding connection bolt in the spout to make high tooth sealing strip convenient to detach change when damaging, rotate through the drive lead screw, make the gallows on the lead screw along the lead screw displacement and drive the lift of short tooth sealing strip through elastic buffer mechanism, thereby make low tooth sealing strip be convenient for carry out flexible regulation according to the vapor seal needs, thereby make the vapor seal effect better.
In order to realize the utility model discloses a purpose, the utility model discloses a following technical scheme realizes: the utility model provides a vapor seal device for turbo generator, includes the gland body, first recess has been seted up to gland body bottom equidistance, the inside slip of first recess is pegged graft there is the inserted block, the inserted block bottom mounting has the high tooth sealing strip, the spout has all been seted up to first recess both sides, the inside sliding connection of spout has the bolt, the one end that the inserted block was kept away from to the bolt is through spacing spring and spout inner wall connection, set up the jack that matches with the bolt on the inserted block, be equipped with the second recess between the first recess, second recess lower part sliding connection has the low tooth sealing strip, second recess top is equipped with through revolving the rotatory lead screw of cap drive, the screw thread has cup jointed the gallows on the lead screw, the gallows bottom is passed through elastic buffer mechanism and is connected with the low tooth sealing strip.
The further improvement lies in that: the bottom end of the gland casing is provided with a labyrinth cavity between the first groove and the second groove, and the inner wall of the labyrinth cavity is uniformly provided with hemispherical depressions.
The further improvement lies in that: the elastic buffer mechanism comprises a first supporting plate fixed at the bottom end of the hanging bracket and a second supporting plate fixed at the top end of the low-tooth sealing strip, and the first supporting plate and the second supporting plate are connected through damping springs which are symmetrically distributed.
The further improvement lies in that: the two ends of the second supporting plate are both fixed with first sliding blocks, the inner wall of the second groove is provided with a first sliding rail matched with the first sliding blocks, the two sides of the low-tooth sealing strip are both fixed with second sliding blocks, and the inner wall of the second groove is provided with a second sliding rail matched with the second sliding blocks.
The further improvement lies in that: the top end of the insert block is fixed with a conical guide post which is symmetrically distributed at the top end of the high-tooth sealing strip, and the top end inside the first groove is provided with a conical guide groove matched with the guide post.
The further improvement lies in that: a push-pull rod which penetrates through the gland body in a sliding mode is fixed on one side, far away from the first groove, of the bottom end of the bolt, a through groove matched with the push-pull rod is formed in the bottom end of the sliding groove, and a first sealing ring matched with the bolt is arranged on one side, close to the first groove, of the inner wall of the sliding groove.
The utility model has the advantages that: the utility model comprises a gland sealing body, a bolt slides along a sliding groove and is separated from a jack by pushing a push-pull rod to two sides, then a damaged high-tooth sealing strip is pulled out, an insert block at the top end of a new high-tooth sealing strip is inserted into a first groove, then the push-pull rod is loosened, the bolt rebounds under the action of a limiting spring and is inserted into the jack, thereby the high-tooth sealing strip is convenient to disassemble and replace when being damaged, the utility is convenient to use and high in practicability, a hanging bracket on a screw rod is displaced along the screw rod by driving the screw rod to rotate and drives a short-tooth sealing strip to lift through an elastic buffer mechanism, thereby the low-tooth sealing strip is convenient to be adjusted in a telescopic way according to the gland sealing requirements, thereby the gland sealing effect is better, the thermodynamic effect and the frictional resistance effect are increased by arranging a labyrinth cavity, a very good effect is played on the strong turbulent phenomenon of steam airflow, and the effect of vortex speed reduction is increased, the air leakage of the unit is reduced, and the steam seal effect is further improved by combining the high-tooth sealing strip and the short-tooth sealing strip.
Drawings
Fig. 1 is a cross-sectional view of the present invention;
FIG. 2 is an enlarged view of the utility model at A;
fig. 3 is an enlarged view of the position B of the present invention.
Wherein: 1. a gland sealing body; 2. a first groove; 3. inserting a block; 4. a high tooth seal strip; 5. a chute; 6. a bolt; 7. a limiting spring; 8. a jack; 9. a second groove; 10. a low-tooth seal strip; 11. a screw rod; 12. a hanger; 13. a labyrinth chamber; 14. a first support plate; 15. a second support plate; 16. a damping spring; 17. a first slider; 18. a first slide rail; 19. a second slider; 20. a second slide rail; 21. a guide post; 22. a push-pull rod; 23. a first seal ring; 24. a slide bar; 25. a slide plate; 26. a second seal ring; 27. and a third sealing ring.
Detailed Description
In order to deepen the understanding of the present invention, the following embodiments will be combined to make the present invention do further details, and the present embodiment is only used for explaining the present invention, and does not constitute the limitation of the protection scope of the present invention.
Example one
According to the figures 1, 2 and 3, the embodiment provides a steam seal device for a turbonator, which comprises a steam seal body 1, wherein first grooves 2 are equidistantly formed in the bottom end of the steam seal body 1, an insert block 3 is inserted into the first grooves 2 in a sliding manner, high-tooth sealing strips 4 are fixed at the bottom end of the insert block 3, sliding grooves 5 are formed in two sides of the first grooves 2, bolts 6 are connected into the sliding grooves 5 in a sliding manner, one ends of the bolts 6, far away from the insert block 3, are connected with the inner walls of the sliding grooves 5 through limiting springs 7, insertion holes 8 matched with the bolts 6 are formed in the insert block 3, second grooves 9 are formed between the first grooves 2, low-tooth sealing strips 10 are connected to the lower portions of the second grooves 9 in a sliding manner, screw rods 11 which are driven to rotate by screwing caps are arranged at the top ends of the second grooves 9, hangers 12 are sleeved on the screw rods 11 in a threaded manner, and the bottom ends of the hangers 12 are connected with the low-tooth sealing strips 10 through elastic buffer mechanisms, the combination through high tooth sealing strip 4 and low tooth sealing strip 10 uses and is used for carrying out the vapor seal to turbo generator's inner chamber, through promoting bolt 6 to both sides, make bolt 6 along with 5 slides of spout and break away from jack 8, extract high tooth sealing strip 4 that will damage after that, insert first recess 9 with the inserted block 3 on 4 tops of new high tooth sealing strip again, loosen bolt 6 afterwards, bolt 6 kick-backs and inserts jack 8 under spacing spring 7's effect this moment, thereby make high tooth sealing strip convenient to detach change when damaging, rotate through drive lead screw 11, gallows 12 on making lead screw 11 is along with lead screw 11 displacement and drive short tooth sealing strip 10 through elastic buffer mechanism and go up and down, thereby make low tooth sealing strip be convenient for carry out flexible regulation according to the vapor seal needs.
The bottom end of the gland sealing body 1 is provided with a labyrinth cavity 13 positioned between the first groove 2 and the second groove 9, the inner wall of the labyrinth cavity 13 is uniformly provided with hemispherical depressions, so that the thermodynamic effect and the friction effect are increased, a good intercepting effect is achieved on the strong turbulent flow phenomenon of steam airflow, the vortex deceleration effect is increased, and the unit air leakage is reduced.
The elastic buffer mechanism comprises a first supporting plate 14 fixed at the bottom end of the hanger 12 and a second supporting plate 15 fixed at the top end of the low-tooth sealing strip 10, and the first supporting plate 14 and the second supporting plate 15 are connected through damping springs 16 which are symmetrically distributed, so that a certain buffering and damping effect is achieved on the low-tooth sealing strip 10.
The two ends of the second supporting plate 15 are both fixed with first sliding blocks 17, the inner wall of the second groove 9 is provided with first sliding rails 18 matched with the first sliding blocks 17, the two sides of the low-tooth sealing strip 10 are both fixed with second sliding blocks 19, the inner wall of the second groove 9 is provided with second sliding rails 20 matched with the second sliding blocks 19, and therefore the low-tooth sealing strip 10 is more stable in the stretching process.
The top of the insert 3 is fixed with a conical guide post 21, the guide post 21 is symmetrically distributed on the top of the high-tooth sealing strip 4, a conical guide groove matched with the guide post 21 is formed in the top end of the inner portion of the first groove 2, so that the insert 3 can be conveniently and accurately inserted into the first groove 2, and the installation convenience of the high-tooth sealing strip 4 is further improved.
A push-pull rod 22 which penetrates through the gland sealing body 1 in a sliding mode is fixed on one side, away from the first groove 2, of the bottom end of the bolt 6, a through groove matched with the push-pull rod 22 is formed in the bottom end of the sliding groove 5, and a first sealing ring 23 matched with the bolt 6 is arranged on one side, close to the first groove 2, of the inner wall of the sliding groove 5, so that sealing performance is improved conveniently.
The top end of the sliding groove 5 is provided with a sliding rod 24, the top end of the bolt 6 is fixedly provided with a sliding plate 25, and the sliding plate 25 is sleeved on the bolt 6 in a sliding mode, so that the bolt 6 is more stable in the moving process.
The top of high tooth sealing strip 4 is fixed with second sealing washer 26, the seal groove that matches with second sealing washer 26 is seted up to the position that gland casing 1 bottom lies in second sealing washer 26, the position that gland casing 1 bottom lies in second recess 9 all around is fixed with the third sealing washer 27 that matches with low tooth sealing strip 10, further improves sealed effect.
When the high-tooth sealing strip 4 is damaged due to long-time use and needs to be disassembled and replaced, the push-pull rod 22 is firstly pushed towards two sides, the bolt 6 slides along the sliding groove 5 and is separated from the jack 8, then the damaged high-tooth sealing strip 4 is pulled out, the insert block 3 at the top end of the new high-tooth sealing strip 4 is inserted into the first groove 9, then the push-pull rod 22 is loosened, the bolt 6 rebounds under the action of the limiting spring 7 and is inserted into the jack 8, the disassembly and replacement of the high-tooth sealing strip 4 can be completed, when the low-tooth sealing strip 10 needs to be telescopically adjusted according to sealing requirements, the screw rod 11 is driven to rotate, and the hanging bracket 12 on the screw rod 11 moves along the screw rod 11 and drives the low-tooth sealing strip 10 to ascend and descend through the elastic buffer mechanism.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a steam turbine generator is with steam seal device, includes gland casing (1), its characterized in that: the steam seal comprises a steam seal body (1), wherein first grooves (2) are equidistantly formed in the bottom end of the steam seal body (1), insert blocks (3) are inserted into the first grooves (2) in a sliding and inserting mode, high-tooth sealing strips (4) are fixed to the bottom ends of the insert blocks (3), sliding grooves (5) are formed in two sides of each first groove (2), bolts (6) are connected into the sliding grooves (5) in a sliding mode, one ends, far away from the insert blocks (3), of the bolts (6) are connected with the inner walls of the sliding grooves (5) through limiting springs (7), inserting holes (8) matched with the bolts (6) are formed in the insert blocks (3), second grooves (9) are formed between the first grooves (2), low-tooth sealing strips (10) are connected to the lower portions of the second grooves (9) in a sliding mode, lead screws (11) which are driven to rotate through rotating caps are arranged at the top ends of the second grooves (9), and hanging frames (12) are sleeved on the lead screws (11), the bottom end of the hanger (12) is connected with the low-tooth sealing strip (10) through an elastic buffer mechanism.
2. A steam turbine generator steam seal assembly according to claim 1, wherein: labyrinth cavity (13) that are located between first recess (2) and second recess (9) are seted up to gland casing (1) bottom, hemispherical sunken has evenly been seted up on the inner wall of labyrinth cavity (13).
3. A steam turbine generator steam seal assembly according to claim 1, wherein: the elastic buffer mechanism comprises a first supporting plate (14) fixed at the bottom end of the hanger (12) and a second supporting plate (15) fixed at the top end of the low-tooth sealing strip (10), and the first supporting plate (14) and the second supporting plate (15) are connected through damping springs (16) which are symmetrically distributed.
4. A steam turbine generator steam seal assembly according to claim 3, wherein: both ends of the second supporting plate (15) are fixed with first sliding blocks (17), the inner wall of the second groove (9) is provided with first sliding rails (18) matched with the first sliding blocks (17), both sides of the low-tooth sealing strip (10) are fixed with second sliding blocks (19), and the inner wall of the second groove (9) is provided with second sliding rails (20) matched with the second sliding blocks (19).
5. A steam turbine generator steam seal assembly according to claim 1, wherein: the top end of the insert block (3) is fixed with a conical guide post (21), the guide post (21) is symmetrically distributed on the top end of the high-tooth sealing strip (4), and the top end inside the first groove (2) is provided with a conical guide groove matched with the guide post (21).
6. A steam turbine generator steam seal assembly according to claim 1, wherein: a push-pull rod (22) which penetrates through the gland sealing body (1) in a sliding mode is fixed on one side, far away from the first groove (2), of the bottom end of the bolt (6), a through groove matched with the push-pull rod (22) is formed in the bottom end of the sliding groove (5), and a first sealing ring (23) matched with the bolt (6) is arranged on one side, close to the first groove (2), of the inner wall of the sliding groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185258.5U CN215256337U (en) | 2021-05-31 | 2021-05-31 | Steam seal device for steam turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121185258.5U CN215256337U (en) | 2021-05-31 | 2021-05-31 | Steam seal device for steam turbine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215256337U true CN215256337U (en) | 2021-12-21 |
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ID=79474689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121185258.5U Active CN215256337U (en) | 2021-05-31 | 2021-05-31 | Steam seal device for steam turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215256337U (en) |
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2021
- 2021-05-31 CN CN202121185258.5U patent/CN215256337U/en active Active
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