CN209245229U - Leakage construction seal assembly in a kind of large sized unit low pressure bypass valve arrangement is anti- - Google Patents
Leakage construction seal assembly in a kind of large sized unit low pressure bypass valve arrangement is anti- Download PDFInfo
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- CN209245229U CN209245229U CN201821435539.XU CN201821435539U CN209245229U CN 209245229 U CN209245229 U CN 209245229U CN 201821435539 U CN201821435539 U CN 201821435539U CN 209245229 U CN209245229 U CN 209245229U
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- bolt
- inner conical
- low pressure
- large sized
- bypass valve
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Abstract
The utility model discloses a kind of anti-interior leakage construction seal assemblies of large sized unit low pressure bypass valve arrangement, leakage construction seal assembly is set in a pipeline in the large sized unit low pressure bypass valve arrangement is anti-, it includes bolt, nut is successively arranged with from top to bottom on the bolt, rubber packing set, first external conical sleeve, second external conical sleeve, inner conical drogue is arranged on first external conical sleeve and second external conical sleeve, first external conical sleeve is identical as the structure of second external conical sleeve and is symmetrically disposed on the both ends of the inner conical drogue, the close end that the center of first external conical sleeve and second external conical sleeve and the inner conical drogue is mutually closed on is respectively less than the distal portion being away from each other with the center of the inner conical drogue, the bolt includes bolt head and screw rod, screw thread is provided with outside the screw rod, the nut by the thread bush be set to the screw rod on It is connect with the screw flight, when the nut is rotated with the bolt head direction close to the bolt, the rubber packing set deformation increases.
Description
Technical field
The utility model relates to valve seal technical field, the anti-interior leakage of specifically a kind of large sized unit low pressure bypass valve arrangement
Construct seal assembly.
Background technique
Valve is gas, liquid, the control element in powder material conveying system, have water conservancy diversion, shut off, flow restriction control,
Prevent the functions such as refluence, shunting or overflow release.Valve should generally have sealing performance, strength character, regulation performance, action
Energy and trafficability performance.Currently, about more than 6000 family, valve enterprise, China, wherein annual value of production, which is more than 5,000,000 yuan, 900.Unit
The two-stage tandem bypath system that shunt location is 100%, main steam pipe and steam turbine high pressure are formed by high pressure turbine by and low voltage bypass
High pressure turbine by is connected between cold section of reheated steam pipe after cylinder steam discharge non-return valve, so that steam is directly entered reheater, reheater goes out
Connection low voltage bypass pipeline makes steam be directly entered condenser on mouth pipeline, other during Unit Commitment, operation and abnormal conditions
Road system plays the role of control, monitoring steam pressure and boiler overpressure protection.
Seal assembly large sized unit low pressure bypass valve arrangement is the core component of valve, once failure will announce life of valve
Termination, abrasion, scratch, corrosion is the main reason for leading to valve seal component failure, therefore, improve valve seal piece table
The hardness and wear-and corrosion-resistant ability in face are to improve the important channel of valve service life.
Utility model content
The purpose of this utility model is to provide a kind of anti-interior leakages of large sized unit low pressure bypass valve arrangement to construct seal assembly,
To solve the problems, such as to propose in background technique.
To achieve the above object, the utility model provides the following technical solutions；
Leakage construction seal assembly, the large sized unit low voltage bypass valve in a kind of large sized unit low pressure bypass valve arrangement is anti-
Leakage construction seal assembly is set in a pipeline in door is anti-comprising bolt is successively arranged on the bolt from top to bottom
There are nut, rubber packing set, the first external conical sleeve, the second external conical sleeve, is arranged on first external conical sleeve and second external conical sleeve
There is inner conical drogue, first external conical sleeve is identical as the structure of second external conical sleeve and is symmetrically disposed on the two of the inner conical drogue
The close end that the center of end, first external conical sleeve and second external conical sleeve and the inner conical drogue is mutually closed on respectively less than with it is described
The distal portion that the center of inner conical drogue is away from each other, the bolt include bolt head and screw rod, are provided with screw thread outside the screw rod, described
Nut is set on the screw rod by the thread bush to connect with the screw flight, and the nut is close to the bolt
When bolt head direction rotates, the rubber packing set deformation increases, meanwhile, the inner conical drogue is radially away from the bolt
The direction of screw stem is mobile, and the anti-interior leakage construction seal assembly of the large sized unit low pressure bypass valve arrangement is made to seal the pipe
Road, conversely, the rubber packing set deformation increases, together when the nut is rotated with the bolt head direction far from the bolt
When, the inner conical drogue is radially to make the large sized unit low pressure close to the movement of the direction of the screw stem of the bolt
Leakage construction seal assembly unclamps the pipeline in bypass valve is anti-.
Preferably, the inner conical drogue includes the first inner conical drogue, the second inner conical drogue, third inner conical drogue and the sealing of circle distribution
Circle, and external screw thread, the sealing ring inner wall are provided on first inner conical drogue, the second inner conical drogue and third inner conical drogue outer wall
On be provided with internal screw thread, the sealing ring is sheathed on outside first inner conical drogue, the second inner conical drogue and third inner conical drogue.
Preferably, the stud base is symmetrical arranged there are two groove, and the side wall of each groove is flat with bottom
Face is used for fastener spanner.
Preferably, an elastomeric pad is provided between the bolt head and second external conical sleeve.
Preferably, the both ends of the bolt have turntable, and the turntable is connect with the nut.
Preferably, move the nut on the screw rod by rotating the turntable.
Compared with prior art, the utility model has the beneficial effects that
With the good physical property such as high rigidity, wear-resistant, corrosion-resistant, low friction, high chemical stability, valve group is improved
Sealing performance and precision, reduce or prevent to leak, reduce catastrophic failure, extend service life, and the utility model loads and unloads
Conveniently, it can be rapidly achieved sealing locking state, improved work efficiency, this is reasonable in design, and sealability is high, and work can
Lean on, it is easily operated, can Reusability, the sealing suitable for various pipelines.
Detailed description of the invention
Fig. 1 is that the structure of leakage construction seal assembly in large sized unit low pressure bypass valve arrangement provided by the utility model is anti-is shown
It is intended to；
Fig. 2 is the bolt of leakage construction seal assembly in large sized unit low pressure bypass valve arrangement provided by the utility model is anti-
Structural schematic diagram；
Fig. 3 is the inner conical drogue of leakage construction seal assembly in large sized unit low pressure bypass valve arrangement provided by the utility model is anti-
Structural schematic diagram.
In figure: 1- pipeline；2- bolt；3- nut；4- rubber packing set；The first external conical sleeve of 5-；The second external conical sleeve of 6-；In 7-
Tapered sleeve；8- bolt head；9- screw rod；10- screw thread；The first inner conical drogue of 11-；The second inner conical drogue of 12-；13- third inner conical drogue；14- is close
Seal；15- groove；16- elastomeric pad；17- turntable.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical aspect in the utility model embodiment
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.
Fig. 1-Fig. 3 is please referred to, a kind of anti-interior leakage construction of large sized unit low pressure bypass valve arrangement provided by the utility model is close
Sealing assembly, the anti-interior leakage construction seal assembly of the large sized unit low pressure bypass valve arrangement are set in a pipeline 1 comprising bolt
2, nut 3, rubber packing set the 4, first external conical sleeve 5, the second external conical sleeve 6 are successively arranged on the bolt 2 from top to bottom,
Inner conical drogue 7, first external conical sleeve 5 and second outer cone are arranged on first external conical sleeve 5 and second external conical sleeve 6
The structure of set 6 is identical and be symmetrically disposed on the both ends of the inner conical drogue 7, first external conical sleeve 5 and second external conical sleeve 6 with
The close end that the center of the inner conical drogue 7 is mutually closed on is respectively less than the distal portion being away from each other with the center of the inner conical drogue 7, the spiral shell
Bolt 1 includes bolt head 8 and screw rod 9, and screw thread 10 is provided with outside the screw rod 9, and the nut 3 is sheathed on institute by the screw thread 10
It states to be threadedly coupled with the screw rod 9 on screw rod 9, when the nut 3 is rotated with 8 direction of bolt head close to the bolt 2, institute
4 deformation of rubber packing set is stated to increase, meanwhile, the inner conical drogue 7 is radially away from the side of 9 central axis of screw rod of the bolt 1
To movement, the anti-interior leakage construction seal assembly of the large sized unit low pressure bypass valve arrangement is set to seal the pipeline 1, conversely, working as institute
When stating nut 3 to rotate far from 8 direction of bolt head of the bolt 2,4 deformation of rubber packing set increases, meanwhile, it is described in
Tapered sleeve 7 is radially to make the large sized unit low voltage bypass valve close to the movement of the direction of 9 central axis of screw rod of the bolt 2
Leakage construction seal assembly unclamps the pipeline 1 in door is anti-.
In the present embodiment, the inner conical drogue 7 includes in the first inner conical drogue 11, the second inner conical drogue 12, third of circle distribution
Tapered sleeve 13 and sealing ring 14, and be provided on 13 outer wall of first inner conical drogue 11, the second inner conical drogue 12 and third inner conical drogue
External screw thread is provided with internal screw thread on 14 inner wall of sealing ring, and the sealing ring 14 is sheathed on first inner conical drogue 11, second
Outside inner conical drogue 12 and third inner conical drogue 13.
In the present embodiment, there are two groove 15, the side wall of each groove 15 and bottoms for 1 bottom symmetrical of the bolt setting
Portion is plane, is used for fastener spanner.
In the present embodiment, an elastomeric pad 16 is provided between the bolt head 8 and second external conical sleeve 6.
In the present embodiment, the both ends of the bolt 2 have turntable 17, and the turntable 17 is connect with the nut 3.
In the present embodiment, move the nut 3 on the screw rod 9 by rotating the turntable 17.
The course of work of the utility model is as follows:
In actual use, screw up with a wrench nut 3, with the increase of fastening force, keeps the first external conical sleeve 5 axially compressed
Rubber packing set 4, to make its outer circle under axial compressive force effect of rubber packing set 4 be radially expanded, until the inner wall with pipeline 1
It fits closely, pipeline is reliably sealed；Further increase fastening force, make first external conical sleeve 5 and second external conical sleeve 6 by
Gradually close, the inner conical drogue 7 its outer circle under cone match effect radially expands, until pushing against the inner wall 1 of pipeline, makes described
The fixed locking of acting pipe locking sealing device, in this way, forming enclosure space.
Although the utility model is described in detail with reference to the foregoing embodiments, come for those skilled in the art
Say, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic into
Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all
It is included within the scope of protection of this utility model.
Claims (6)
- Leakage construction seal assembly in 1. a kind of large sized unit low pressure bypass valve arrangement is anti-, which is characterized in that the large sized unit Leakage construction seal assembly is set in a pipeline (1) in low pressure bypass valve arrangement is anti-comprising bolt (2), on the bolt (2) from Top to bottom is successively arranged with nut (3), rubber packing set (4), the first external conical sleeve (5), the second external conical sleeve (6), and described It is arranged with inner conical drogue (7) on one external conical sleeve (5) and second external conical sleeve (6), outside first external conical sleeve (5) and described second The structure of tapered sleeve (6) is identical and is symmetrically disposed on the both ends of the inner conical drogue (7), first external conical sleeve (5) and described second The close end that the center of external conical sleeve (6) and the inner conical drogue (7) is mutually closed on is respectively less than to be away from each other with the center of the inner conical drogue (7) Distal portion, the bolt (2) includes bolt head (8) and screw rod (9), and screw thread (10), the spiral shell are provided with outside the screw rod (9) Female (3) are sheathed on by the screw thread (10) to be threadedly coupled with the screw rod (9) on the screw rod (9), the nut (3) with When rotating close to bolt head (8) direction of the bolt (2), rubber packing set (4) deformation increases, meanwhile, the inner cone (7) are covered radially to make by the large sized unit low pressure away from the movement of the direction of screw rod (9) central axis of the bolt (2) Valve anti-interior leakage construction seal assembly in road seals the pipeline (1), conversely, when the nut (3) are with separate the bolt (2) When bolt head (8) direction rotates, rubber packing set (4) deformation increases, meanwhile, the inner conical drogue (7) is radially with close The direction of screw rod (9) central axis of the bolt (2) is mobile, keeps the anti-interior leakage construction of the large sized unit low pressure bypass valve arrangement close Sealing assembly unclamps the pipeline (1).
- Leakage construction seal assembly in 2. large sized unit low pressure bypass valve arrangement according to claim 1 is anti-, which is characterized in that The inner conical drogue (7) includes the first inner conical drogue (11), the second inner conical drogue (12), third inner conical drogue (13) and the sealing of circle distribution It encloses (14), and is provided with outer spiral shell on first inner conical drogue (11), the second inner conical drogue (12) and third inner conical drogue (13) outer wall Line is provided with internal screw thread on sealing ring (14) inner wall, and the sealing ring (14) is sheathed on first inner conical drogue (11), Two inner conical drogues (12) and third inner conical drogue (13) are outside.
- Leakage construction seal assembly in 3. large sized unit low pressure bypass valve arrangement according to claim 2 is anti-, which is characterized in that There are two groove (15) for bolt (2) the bottom symmetrical setting, and the side wall of each groove (15) and bottom are plane, are used In fastener spanner.
- Leakage construction seal assembly in 4. large sized unit low pressure bypass valve arrangement according to claim 3 is anti-, which is characterized in that An elastomeric pad (16) are provided between the bolt head (8) and second external conical sleeve (6).
- Leakage construction seal assembly in 5. large sized unit low pressure bypass valve arrangement according to claim 4 is anti-, which is characterized in that The both ends of the bolt (2) have turntable (17), and the turntable (17) connect with the nut (3).
- Leakage construction seal assembly in 6. large sized unit low pressure bypass valve arrangement according to claim 5 is anti-, which is characterized in that The nut (3) is moved on the screw rod (9) by rotating the turntable (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821435539.XU CN209245229U (en) | 2018-09-03 | 2018-09-03 | Leakage construction seal assembly in a kind of large sized unit low pressure bypass valve arrangement is anti- |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821435539.XU CN209245229U (en) | 2018-09-03 | 2018-09-03 | Leakage construction seal assembly in a kind of large sized unit low pressure bypass valve arrangement is anti- |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209245229U true CN209245229U (en) | 2019-08-13 |
Family
ID=67517551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821435539.XU Active CN209245229U (en) | 2018-09-03 | 2018-09-03 | Leakage construction seal assembly in a kind of large sized unit low pressure bypass valve arrangement is anti- |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209245229U (en) |
-
2018
- 2018-09-03 CN CN201821435539.XU patent/CN209245229U/en active Active
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