CN202955401U - Articulated type expansion joint - Google Patents
Articulated type expansion joint Download PDFInfo
- Publication number
- CN202955401U CN202955401U CN 201220331862 CN201220331862U CN202955401U CN 202955401 U CN202955401 U CN 202955401U CN 201220331862 CN201220331862 CN 201220331862 CN 201220331862 U CN201220331862 U CN 201220331862U CN 202955401 U CN202955401 U CN 202955401U
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- CN
- China
- Prior art keywords
- expansion joint
- pressing plate
- base
- articulated type
- type expansion
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Abstract
The utility model discloses an articulated type expansion joint which is characterized by comprising two steel connecting pipes (1). Bases (2) are mounted on the walls of the two steel connecting pipes (1), a press plate (3) is arranged on one side of each base (2), and two ends of a rubber corrugated pipe (5) are respectively pressed by interactions of the two bases (2) and the press plates (3). The expansion joint is good in sealing and free of leakage and can bear vacuum loads without abnormal deformation, medium can flow smoothly, axial and transverse elastic counterforce is small, force and moment values of a steam discharging outlet of a turbine are reduced to values below the allowed maximum force and moment values, and therefore the requirement that the turbine can operate safely in a long-period with full loads can be met.
Description
Technical field
The utility model relates to a kind of expansion joint of turbine exhaust steam in electric power plant pipeline system.
Background technique
Existing turbine exhaust steam in electric power plant mouth is rectangle or circle, is generally and controls the stressed of steam discharge oral area, and the outlet port of being everlasting arranges expansion joint.Routine is metal corrugated pipe expansion joint at present, has good airproof performance, the advantage of not revealing; Under the vacuum design condition, circular and small size rectangular expansion joint can design, but large scale rectangle expansion joint is difficult to realize; Expansion joint to turbine discharge mouth connection part effect have larger reaction force, moment (comprise interior pressure thrust, axially and lateral stiffness power, moment), and the turbine discharge mouth needs less expansion joint reaction force, thereby needing less axial and lateral stiffness, metal corrugated pipe expansion joint is difficult to meet the stressed of turbine discharge oral area and moment requirement.
Summary of the invention
The purpose of this utility model is exactly for above-mentioned the deficiencies in the prior art, a kind of good seal performance that has is provided, can bears the vacuum load, axially reach lateral stiffness little simultaneously, be applicable to circle or rectangular duct, and to the pipe-line system reaction force little articulated type expansion joint.
The technical solution adopted in the utility model is as follows:
A kind of articulated type expansion joint, is characterized in that it comprises two sections steel adapters, at two sections steel, takes on tube walls and be provided with base, in base one side, is provided with pressing plate, and the two ends of rubber corrugated pipe are compressed by two groups of bases and pressing plate interaction respectively.
Described base is equipped with groove on the side relative with pressing plate, and the two ends projection correspondence of rubber corrugated pipe is positioned at the groove of base and pressing plate, and shape and the groove of projection match.
Between described base and pressing plate, by clamping bolt, fix.
The outer port, side that described two groups of pressing plates are relative with base is provided with flange, and described clamping bolt is between flange and groove.
Described pressing plate in MEDIA FLOW to the importer to a side connect an end of inside lining sleeve, the other end of inside lining sleeve extends to the inboard of another group pressing plate.
The beneficial effects of the utility model have:
This expansion joint has good seal performance, can bear the vacuum load simultaneously, axially reach lateral stiffness little, little to the pipe-line system reaction force, energy-conservation to bear the vacuum load steady without abnormal distortion, media flow without leaking, expanding for the expansion joint good seal, force and moment to the turbine discharge outlet all is reduced to the maximum, force of permission and, below moment values, meets the requirement that turbine discharge exports stressed and moment, meets the requirement of steam turbine full and down long period safe operation.Adopt the concavo-convex Placement of articulated type, connect rubber corrugated pipe and steel pipe, do not come off when pressure-bearing; By compressing and utilize rubber elasticity, the concavo-convex Placement in conjunction with special, reach the effect of sealing.The inside lining sleeve structure of entrance sawtooth design can prevent impact and the turbulent flow of the higher formation of velocity of medium, and can prevent that medium from impacting rubber corrugated pipe.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
As shown in Figure 1, the utility model all is equipped with base 2 on the tube wall of two sections steel adapters 1, be provided with pressing plate 3 in base 2 one sides, base 2 is equipped with groove on the side relative with pressing plate 3, projection correspondence on the two-port of rubber corrugated pipe 5 is positioned at the groove of base 2 and pressing plate 3, and shape and the groove of projection match, and shape and the mounting type of rubber corrugated pipe 5 are similar to articulation structure.Fixing by clamping bolt 6 between base 2 and pressing plate 3, the two ends of rubber corrugated pipe 5 are compressed by two groups of bases 2 and pressing plate 3 interactions respectively like this.
Be provided with a circle flange 7 two groups of pressing plate 3 outer ports, side relative with base 2, clamping bolt 6 is between flange 7 and groove.Can form leverage by flange 7, rubber corrugated pipe 5 is fastened.
Described pressing plate 3 in MEDIA FLOW to the importer to a side connect an end of inside lining sleeve 4, the other end of inside lining sleeve 4 extends to the inboard of another group pressing plate 3.Inside lining sleeve 4 entry ends are smooth structure, can prevent impact and the turbulent flow of the higher formation of velocity of medium, and can protect rubber corrugated pipe 5 to avoid impacting.
Other undeclared part that the utility model relates to is same as the prior art.
Claims (5)
1. an articulated type expansion joint, it is characterized in that it comprises two sections steel adapters (1), on the adapter wall of two sections steel adapters (1), base (2) all is installed, be provided with pressing plate (3) in base (2) one sides, the two ends of rubber corrugated pipe (5) are compressed by two groups of bases (2) and pressing plate (3) interaction respectively.
2. articulated type expansion joint according to claim 1, it is characterized in that being equipped with groove on side that described base (2) is relative with pressing plate (3), projection correspondence on the two-port of rubber corrugated pipe (5) is positioned at the groove of base (2) and pressing plate (3), and shape and the groove of projection match.
3. articulated type expansion joint according to claim 2, is characterized in that between described base (2) and pressing plate (3) fixing by clamping bolt (6).
4. articulated type expansion joint according to claim 3, is characterized in that the outer port, side that described two groups of pressing plates (3) are relative with base (2) is provided with a circle flange (7), and described clamping bolt (6) is positioned between flange (7) and groove.
5. according to the described articulated type expansion joint of claim 3 or 4, it is characterized in that described pressing plate (3) in MEDIA FLOW to the importer to a side connect an end of inside lining sleeve (4), the other end of inside lining sleeve (4) extends to the inboard of another group pressing plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331862 CN202955401U (en) | 2012-07-10 | 2012-07-10 | Articulated type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220331862 CN202955401U (en) | 2012-07-10 | 2012-07-10 | Articulated type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202955401U true CN202955401U (en) | 2013-05-29 |
Family
ID=48460973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220331862 Expired - Lifetime CN202955401U (en) | 2012-07-10 | 2012-07-10 | Articulated type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202955401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720913A (en) * | 2012-07-10 | 2012-10-10 | 南京晨光东螺波纹管有限公司 | Articulated-type expansion joint |
-
2012
- 2012-07-10 CN CN 201220331862 patent/CN202955401U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720913A (en) * | 2012-07-10 | 2012-10-10 | 南京晨光东螺波纹管有限公司 | Articulated-type expansion joint |
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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 |
Granted publication date: 20130529 |
|
| CX01 | Expiry of patent term |