CN201184467Y - Rectangle piston type compensator - Google Patents
Rectangle piston type compensator Download PDFInfo
- Publication number
- CN201184467Y CN201184467Y CNU2008200076782U CN200820007678U CN201184467Y CN 201184467 Y CN201184467 Y CN 201184467Y CN U2008200076782 U CNU2008200076782 U CN U2008200076782U CN 200820007678 U CN200820007678 U CN 200820007678U CN 201184467 Y CN201184467 Y CN 201184467Y
- Authority
- CN
- China
- Prior art keywords
- outer coating
- core tube
- core pipe
- packing
- overcoat
- Prior art date
- 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 - Fee Related
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Abstract
The utility model relates to a rectangular piston type compensator used in a thermal power plant and an industrial boiler gas duct, which belongs to the thermal expansion compensation technical field of a flue gas pipeline and is characterized in that a joint tube is fixedly connected with one end of an outer coating, the other end of the outer coating is fixedly connected with a flange; a packing retaining ring is fixedly arranged on the inner surface of the outer coating; one end of a core tube is arranged inside the outer coating; sealing packing is filled between the core tube and the outer coating; a packing device is sleeved on the core tube; the packing device and the flange are connected through a threaded bolt; the core tube slides to and fro inside the outer coating; a guide shell is fixedly arranged in a compensation displacement region of the joint tube and the core tube. In the rectangular piston type compensator, because the joint tube and the outer coating are fixedly connected into a whole, the flange is welded at one end of the outer coating, the packing retaining ring is welded inside the outer coating, and the sealing packing is completely filled between the core tube and the outer coating. The compensation method of the compensator is that the core tube performs the expansion displacement on the sealing packing in the outer coating when the temperature changes, a displacement compensator has small stress, and the time is short, the compensator can operate under the low stress, so the service life is prolonged.
Description
One, technical field
The utility model relates to a kind of rectangle piston formula compensator, is used for thermal power plant and industrial boiler cigarette air channel, belongs to fume pipe heat expansion compensation technique field.
Two, background technique
The rectangle slip joint of sale or people application in the market all is the rectangle corrugated expansion joint, and corrugated expansion joint is a kind of first body of working down in heavily stressed (stress is greater than yield), works in mordant surrounding medium and easily causes stress corrosion to destroy.But flue gas all is mordant, that is to say that Korrosionsmedium is forever to exist, and the extent of corrosion difference that difference is medium.Therefore, the danger that the rectangle FlexbleJoint always has stress corrosion to destroy, and this destruction always at first begins corrosion at crest, the trough position of bellows, because these two positions are out of shape maximum at work, the zone of stress maximum, surpass yield limit because the suffered stress of corrugated expansion joint is very big, and when boiler operatiopn the long-term high-stress state that keeps, working life is short.
Three, summary of the invention
The purpose of this utility model is to provide a kind of and works under low stress, the rectangle piston formula compensator of long service life.
Technical solution: the utility model adapter, core pipe, guide shell, take over and fixedly connected with an end of overcoat, the other end of overcoat is fixedlyed connected with flange, be installed with packing retaining ring on the internal surface of overcoat, an end of core pipe places overcoat inside, is full of stuffing box packing between core pipe and the overcoat, differential is sleeved on the core pipe, differential and flange are by Bolt Connection, and the core pipe reciprocatingly slides in overcoat, and the compensate for displacement district of adapter, core pipe is installed with guide shell.
Adapter, overcoat, packing retaining ring, flange are welded into an assembly.
Space length between adapter and the core pipe is attainable compensate for displacement district.
Guide shell is fixedlyed connected with the core pipe.
Guide shell is fixedlyed connected with adapter.
The utility model is because adapter is connected to one with overcoat, and an end of overcoat is welded with flange, and inside is welded with packing retaining ring, is full of filler between core pipe and the overcoat.This compensation method is: telescopic displacement in the stuffing box packing of core pipe in overcoat during temperature variation, and this motion compensator stressed very little, and the time is very short, compensator can be worked under low stress, so prolonged working life.
Four, description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model profile.
Five, embodiment
Claims (5)
1, rectangle piston formula compensator, comprise: take over (1), core pipe (7), guide shell (8), it is characterized in that: take over (1) and fixedly connected with an end of overcoat (2), the other end of overcoat (2) is fixedlyed connected with flange (5), be installed with packing retaining ring (3) on the internal surface of overcoat (2), one end of core pipe (7) places overcoat (2) inside, be full of stuffing box packing (4) between core pipe (7) and the overcoat (2), differential (6) is sleeved on the core pipe (7), differential (6) and flange (5) are by Bolt Connection, core pipe (7) reciprocatingly slides in overcoat (2), takes over (1), the compensate for displacement district of core pipe (7) is installed with guide shell (8).
2, rectangle piston formula compensator according to claim 1 is characterized in that: adapter (1), overcoat (2), packing retaining ring (3), flange (5) are welded into an assembly.
3, rectangle piston formula compensator according to claim 1 is characterized in that: the space length of taking between (1) and the core pipe (7) is attainable compensate for displacement district.
4, rectangle piston formula compensator according to claim 1 is characterized in that: guide shell (8) is fixedlyed connected with core pipe (7).
5, rectangle piston formula compensator according to claim 1 is characterized in that: guide shell (8) is fixedlyed connected with adapter (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2008200076782U CN201184467Y (en) | 2008-03-26 | 2008-03-26 | Rectangle piston type compensator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNU2008200076782U CN201184467Y (en) | 2008-03-26 | 2008-03-26 | Rectangle piston type compensator |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201184467Y true CN201184467Y (en) | 2009-01-21 |
Family
ID=40272206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNU2008200076782U Expired - Fee Related CN201184467Y (en) | 2008-03-26 | 2008-03-26 | Rectangle piston type compensator |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN201184467Y (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107575687A (en) * | 2017-09-10 | 2018-01-12 | 江苏永力管道有限公司 | The inner pressed sleeve expansion joint of compound external insurance sleeve pipe |
-
2008
- 2008-03-26 CN CNU2008200076782U patent/CN201184467Y/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107575687A (en) * | 2017-09-10 | 2018-01-12 | 江苏永力管道有限公司 | The inner pressed sleeve expansion joint of compound external insurance sleeve pipe |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090121 Termination date: 20100326 |