CN2239561Y - Full sealed anti-corrosion directly buried pipeline expansion device - Google Patents
Full sealed anti-corrosion directly buried pipeline expansion device Download PDFInfo
- Publication number
- CN2239561Y CN2239561Y CN 96207234 CN96207234U CN2239561Y CN 2239561 Y CN2239561 Y CN 2239561Y CN 96207234 CN96207234 CN 96207234 CN 96207234 U CN96207234 U CN 96207234U CN 2239561 Y CN2239561 Y CN 2239561Y
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- Prior art keywords
- end plate
- buried pipeline
- directly buried
- seal
- welded
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Abstract
The utility model relates to a full sealed anti-corrosion directly buried pipeline expansion device, relating to the pipeline compensating device for heat supply and refrigerating engineering; the problem of the corrosion protection of the corrugated pipe of the directly buried pipeline expansion device can be solved; the service life can be increased. The utility model is characterized in that the front end of a protective corrugated pipe (8) is vertically welded and connected with an end plate (6); the back end thereof is vertically welded to a sealed end plate (9). The lower end of the sealed end plate (9) is vertically welded and connected with an outlet pipe (11); a slit exists between the upper end thereof and the inner wall of a protective cylinder (7). The front end of the protective cylinder (7) is vertically welded and connected with the upper end of the end plate (6). A slit exists between the lower end of the end plate (6) and the outlet pipe (11). A sealed ring (10) made of polyurethane foam material is arranged on the outer side of the sealed end plate (9).
Description
The utility model relates to a kind of heat supply, refrigeration engineering compensation of pipeline device, especially hermetically sealed anticorrosion directly buried pipeline expansion bend.
Because heat supply, refrigeration engineering pipeline are in use, are subjected to Temperature Influence, and cause that pipeline is flexible, produce piping displacement, even break that therefore, people adopt various ways to address this problem.The directly buried pipeline expansion bend is wherein a kind of, is widely used on city heat supply, the refrigeration engineering pipeline.During direct-burried is meant and directly expansion bend is placed into the soil together with pipeline,, accelerated construction speed, saved engineering cost, therefore be widely used because it saves and builds pipe trench.But, owing to be subjected to the erosion of the infiltration of underground water and surface water for a long time, seriously influenced the life-span of directly buried pipeline expansion bend, therefore, how to prevent that objectionable impurities in the muddy water from entering the inside of expansion bend workpiece, improving the expansion bend anti-corrosion capacity, reach and increase the service life, is the technical barrier that present directly buried pipeline expansion bend faces.
The directly buried pipeline expansion bend in use because temperature variation, pipeline produces when flexible, the pitch of waves by bellows changes and can obtain reconciling.Though moisture and objectionable impurities that flange seal is intended to isolate in the soil enter bellows interior, but the sealing part of flange is real in being in sliding mode, has the slit and communicates with atmosphere, so can bring moisture in the earth and objectionable impurities into bellows interior inevitably, and the bottom deposits in bellows, and bellows is produced stress corrosion, causes the bellows crackle, explosion, cause expansion bend to lose efficacy at last, cause the excessive of the interior material of pipeline, thereby produce serious consequence.Many engineerings have confirmed that there is this drawback in the directly buried pipeline expansion bend.
The purpose of this utility model provides a kind of hermetically sealed anticorrosion directly buried pipeline expansion bend, overcomes the above-mentioned drawback that the directly buried pipeline expansion bend exists at present, improves anti-corrosion capacity, makes to reach with pipeline life to be consistent substantially.
The purpose of this utility model is achieved in that in aforesaid directly buried pipeline expansion bend structure, remove end face seal plate (12), flange (13) and filler (14), add a sealing protective device, constitute a kind of hermetically sealed anticorrosion directly buried pipeline expansion bend, it comprises inlet tube (1), guide plate (3), bellows (4), urceolus (5), end plate (6), protection cylinder (7), protective corrugated tube (8), Seal end plate (9), polyurethane foaming seal ring (10), outer pipe (11), it is characterized in that: the front end of protective corrugated tube (8) and vertical being welded to connect of end plate (6), its rear end and vertical being welded to connect of Seal end plate (9); There is a slit lower end of Seal end plate (9) and vertical being welded to connect of outer pipe (11) between the inwall of its upper end and protection cylinder (7); The front end of protection cylinder (7) and vertical being welded to connect in end plate (6) upper end; Between the lower end of end plate (6) and outer pipe (11) outer wall slit is arranged; Be close to seal ring of arranged outside (10) of Seal end plate (9) with polyurethane foam material system.
The outer wall of bellows (4) and protective corrugated tube (8) is coated anti-corrosion material.
Adopt the technological scheme of said structure, bellows (4) is in whole sealing status fully, make moisture and objectionable impurities in the soil can not enter the inside of bellows (4). the outer wall of protective corrugated tube (8) is owing to scribble anti-corrosion material, increased anti-corrosion capacity, overcome the drawback that the directly buried pipeline expansion bend exists, prolonged working life, improved economic benefit. owing to adopt this kind structure, bellows (4) and protective corrugated tube (8) inside communicate, therefore, two pipe internal pressure equilibriums keep proper functioning.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 directly buried pipeline expansion bend structural drawing.
The hermetically sealed anticorrosion directly buried pipeline expansion bend structural drawing of Fig. 2.
Seal ring 11. outer pipes 12. end face seal plates 13. flanges 14. fillers of 1. inlet tubes, 2. guide shells, 3. guide plates, 4. bellowss, 5. urceolus, 6. end plates, 7. protection cylinder, 8. protective corrugated tubes, 9. Seal end plates, 10. polyurethane foam material systems among the figure.
Shown in Fig. 2: remove Fig. 1 end plates (6) three parts afterwards, be end face seal plate (12), flange (13) and filler (14), add a sealing protective device, its structure is: the front end of protective corrugated tube (8) and vertical being welded to connect of end plate (6), its rear end and vertical being welded to connect of Seal end plate (9); There is a slit lower end of Seal end plate (9) and vertical being welded to connect of outer pipe (11) between its upper end and the protection cylinder inwall; The front end of protection cylinder (7) and vertical being welded to connect in end plate (6) upper end, the external diameter of protection cylinder (7) is identical with the external diameter of urceolus (5); Between the lower end of end plate (6) and outer pipe (11) outer wall slit is arranged; Be close to the outside of Seal end plate (9), a seal ring by polyurethane foam material system (10) is set.
The outer wall of bellows (4) and protective corrugated tube (8) is coated anti-corrosion material.
It is hermetically sealed that this kind structure obtains bellows (4) inside, and moisture in the earth and objectionable impurities enter the inside less than bellows (4), stoped the generation of corrosion effectively.And moisture in the earth and objectionable impurities, by infiltration seal ring (10), still can enter the space between protective corrugated tube (8) and the protection cylinder (7), can the outer wall of protective corrugated tube (8) be corroded, because the outer wall of protective corrugated tube (8) scribbles anti-corrosion material, strengthened anti-corrosion capacity, thereby improved on the whole the life-span of hermetically sealed anticorrosion directly buried pipeline expansion bend.
When temperature raise, bellows (4) was elongated, and protective corrugated tube (8) is compressed; When temperature reduced, bellows (4) was compressed, and protective corrugated tube (8) is elongated.Along with variation of temperature, two bellowss have alternately elongated, have compressed, have reconciled pipeline and varied with temperature and stretching of producing, and have guaranteed the whole pipe proper functioning like this.
Claims (2)
1. hermetically sealed anticorrosion directly buried pipeline expansion bend, comprise: inlet tube (1), guide plate (3), bellows (4), urceolus (5), end plate (6), protection cylinder (7), protective corrugated tube (8), Seal end plate (9), polyurethane foaming seal ring (10), outer pipe (11), it is characterized in that: the front end of protective corrugated tube (8) and vertical being welded to connect of end plate (6), its rear end and vertical being welded to connect of Seal end plate (9); There is a slit lower end of Seal end plate (9) and vertical being welded to connect of outer pipe (11) between its upper end and protection cylinder (7) inwall; The front end of protection cylinder (7) and vertical being welded to connect in end plate (6) upper end, the external diameter of protection cylinder (7) is identical with the external diameter of urceolus (5); Between the lower end of end plate (6) and outer pipe (11) outer wall slit is arranged; Be close to the outside of Seal end plate (9), a seal ring by polyurethane foam material system (10) is set.
2. a kind of hermetically sealed anticorrosion directly buried pipeline expansion bend according to claim 1 is characterized in that: bellows (4), protective corrugated tube (8) outer wall are coated with anti-corrosion material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96207234 CN2239561Y (en) | 1996-03-29 | 1996-03-29 | Full sealed anti-corrosion directly buried pipeline expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96207234 CN2239561Y (en) | 1996-03-29 | 1996-03-29 | Full sealed anti-corrosion directly buried pipeline expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2239561Y true CN2239561Y (en) | 1996-11-06 |
Family
ID=33891579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96207234 Expired - Fee Related CN2239561Y (en) | 1996-03-29 | 1996-03-29 | Full sealed anti-corrosion directly buried pipeline expansion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2239561Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278562A (en) * | 2011-05-29 | 2011-12-14 | 秦皇岛北方管业有限公司 | Direct burial type heat-preservation antiseptic expansion joint |
| CN103486392A (en) * | 2013-09-30 | 2014-01-01 | 江苏百新波纹管有限公司 | Direct burial inside and outside pressure automatic alarming bellow expansion joint |
| CN103791195A (en) * | 2014-01-21 | 2014-05-14 | 沈阳宏奇热力设备制造有限公司 | Double-safety directly-buried corrugated pipe compensator |
| CN103851298A (en) * | 2014-03-19 | 2014-06-11 | 江苏亚星波纹管有限公司 | Heat-preserving waterproof fully-buried expansion joint |
| CN114962846A (en) * | 2022-04-13 | 2022-08-30 | 浙江城建煤气热电设计院股份有限公司 | Be used for direct-burried hot water pipeline air release pipe compensation structure |
-
1996
- 1996-03-29 CN CN 96207234 patent/CN2239561Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278562A (en) * | 2011-05-29 | 2011-12-14 | 秦皇岛北方管业有限公司 | Direct burial type heat-preservation antiseptic expansion joint |
| CN103486392A (en) * | 2013-09-30 | 2014-01-01 | 江苏百新波纹管有限公司 | Direct burial inside and outside pressure automatic alarming bellow expansion joint |
| CN103791195A (en) * | 2014-01-21 | 2014-05-14 | 沈阳宏奇热力设备制造有限公司 | Double-safety directly-buried corrugated pipe compensator |
| CN103851298A (en) * | 2014-03-19 | 2014-06-11 | 江苏亚星波纹管有限公司 | Heat-preserving waterproof fully-buried expansion joint |
| CN114962846A (en) * | 2022-04-13 | 2022-08-30 | 浙江城建煤气热电设计院股份有限公司 | Be used for direct-burried hot water pipeline air release pipe compensation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Xing Yiguang Document name: Notice of termination |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |