CN202946829U - Sand-preventing corrugated pipe expansion joint for hydropower station - Google Patents
Sand-preventing corrugated pipe expansion joint for hydropower station Download PDFInfo
- Publication number
- CN202946829U CN202946829U CN 201220668043 CN201220668043U CN202946829U CN 202946829 U CN202946829 U CN 202946829U CN 201220668043 CN201220668043 CN 201220668043 CN 201220668043 U CN201220668043 U CN 201220668043U CN 202946829 U CN202946829 U CN 202946829U
- Authority
- CN
- China
- Prior art keywords
- corrugated pipe
- sand
- expansion joint
- bellows
- guide cylinder
- 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
A sand-preventing corrugated pipe expansion joint for a hydropower station relates to a structure of a diversion pressure pipeline expansion compensator of the hydropower station, and comprises a corrugated pipe and a guide cylinder, wherein the guide cylinder is sleeved with the corrugated pipe; one end of the corrugated pipe is fixedly connected with an upstream steel pipe, and the other end thereof is fixedly connected with a downstream steel pipe; one end of the guide cylinder is fixedly connected with the upstream steel pipe; and an elastic filler is arranged between the guide cylinder and the corrugated pipe. The sand-preventing corrugated pipe expansion joint is simple in structure, low in cost, convenient to manufacture and mount, and long in service life, can automatically prevent sand sundries from entering into a gap between the corrugated pipe and the guide cylinder; and meanwhile, overhigh pressure stress to the corrugated pipe is prevented from generating. The sand-preventing corrugated pipe expansion joint can be widely applicable to circulating water pipes in the water conservation field, the electric field, and the chemical engineering field.
Description
Technical field
The utility model relates to the structure of water power plant diversion penstock telescopic compensator.
Background technique
Up to now, solving the water power plant conduit pipe is to adopt bellows expansion joint is installed between pipeline because of one of geology changes or temperature variation produces displacement means.This expansion joint is comprised of bellows and guide shell; because the gap between bellows and guide shell is subject to radially or the gap that produces during angular displacement changes; when the sand grains in current or foreign material enter and be deposited in bellows by the gap; these sand grains or foreign material long time integration; can cause bellows can not produce due distortion, thereby make this bellows expansion joint there is no Telescopic.In order to recover the Telescopic of bellows expansion joint, can only take regularly to remove guide shell, then check and remove the sand grains, the foreign material that deposit in bellows, after removing sediments, then guide shell is installed restored.Do like this that no doubt to have solved bellows expansion joint fixed and lose the problem of dilatation function by the sand grains foreign material; but; the shutdown of must cutting off the water when removing guide shell; and the diameter of the pressure piping in water power plant is all larger; average diameter is at 1 to several meters; the size of corresponding bellows expansion joint is also large, and the difficulty of upkeep operation is also very large.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, a kind of water power plant anti-sand bellow expansion joint to be provided, and can automatically stop sand grains, foreign material to enter in gap between bellows and guide shell.
The purpose of this utility model is achieved in that the water power plant anti-sand bellow expansion joint, comprise bellows and guide shell, bellows is nested with on guide shell, one end of described bellows is fixedly connected with the upstream steel pipe, the other end of bellows is fixedly connected with the downstream steel pipe, one end of described guide shell is fixedly connected with the upstream steel pipe, between guide shell and bellows, elastic filler is set.
When current when the utility model, the elastic filler meeting water-swellable between bellows and guide shell, and make and do not stay the gap between bellows and guide shell, thus reach the purpose of automatic prevention sand grains, foreign material.
Of the present utility model simple in structure, cost is low, fabrication and installation are convenient, long service life, can automatically stop the sand grains foreign material to enter in gap between bellows and guide shell; Can guarantee simultaneously not to bellows is produced too high pressure stress.Can be widely used on the circulating water pipelines such as water conservancy, electric power, chemical industry.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Embodiment
As shown in Figure 1, be the water power plant anti-sand bellow expansion joint, comprise bellows 2 and guide shell 3, bellows 2 is nested with on guide shell 3, one end of bellows 2 welds upstream steel pipe 1, the other end of bellows 2 welds downstream steel pipe 5, and an end of guide shell 3 and 1 welding of upstream steel pipe arrange elastic filler 4 between guide shell 2 and bellows 2.
Claims (1)
1. water power plant anti-sand bellow expansion joint, comprise bellows and guide shell, bellows is nested with on guide shell, it is characterized in that: an end of described bellows is fixedly connected with the upstream steel pipe, the other end of bellows is fixedly connected with the downstream steel pipe, one end of described guide shell is fixedly connected with the upstream steel pipe, between guide shell and bellows, elastic filler is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668043 CN202946829U (en) | 2012-12-07 | 2012-12-07 | Sand-preventing corrugated pipe expansion joint for hydropower station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220668043 CN202946829U (en) | 2012-12-07 | 2012-12-07 | Sand-preventing corrugated pipe expansion joint for hydropower station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946829U true CN202946829U (en) | 2013-05-22 |
Family
ID=48422531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220668043 Expired - Fee Related CN202946829U (en) | 2012-12-07 | 2012-12-07 | Sand-preventing corrugated pipe expansion joint for hydropower station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946829U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943940A (en) * | 2012-12-07 | 2013-02-27 | 南通曙光波纹管制造有限公司 | Sand blocking type corrugated pipe expansion joint for hydroelectric power station |
| CN113389942A (en) * | 2021-06-28 | 2021-09-14 | 武汉大学 | Underground buried pressure steel pipe fracture-resistant structure of over-active fault |
-
2012
- 2012-12-07 CN CN 201220668043 patent/CN202946829U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943940A (en) * | 2012-12-07 | 2013-02-27 | 南通曙光波纹管制造有限公司 | Sand blocking type corrugated pipe expansion joint for hydroelectric power station |
| CN113389942A (en) * | 2021-06-28 | 2021-09-14 | 武汉大学 | Underground buried pressure steel pipe fracture-resistant structure of over-active fault |
| CN113389942B (en) * | 2021-06-28 | 2022-07-19 | 武汉大学 | Underground buried pressure steel pipe fracture-resistant structure of over-active fault |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20151207 |
|
| EXPY | Termination of patent right or utility model |