CN2302384Y - Variable diameter joint for water well - Google Patents
Variable diameter joint for water well Download PDFInfo
- Publication number
- CN2302384Y CN2302384Y CN 97224629 CN97224629U CN2302384Y CN 2302384 Y CN2302384 Y CN 2302384Y CN 97224629 CN97224629 CN 97224629 CN 97224629 U CN97224629 U CN 97224629U CN 2302384 Y CN2302384 Y CN 2302384Y
- Authority
- CN
- China
- Prior art keywords
- water well
- variable diameter
- diameter joint
- well
- casing pipe
- 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 variable diameter joint for a water well used for industrial and civil water well casing pipes. An integral cast steel member which is formed once is adopted by the variable diameter joint for a water well used for industrial and civil water well casing pipes. The upper part (1) and the lower part (3) of the integral cast steel member are respectively provided with a female thread and a male thread which are mutually matched with a large casing pipe and a small casing pipe. The variable diameter joint for a water well used for industrial and civil water well casing pipes can be directly connected with the large casing pipe and the small casing pipe, and welding is not needed to be carried out, and thereby, higher mechanical intensity and anticorrosion performance can be ensured. A water well repair period and a renovating period are extended, and the running life of the regular production of a water well is extended. The utility model has simple structure and convenient use.
Description
The utility model relates to a kind of well reducer union that is used for industry and domestic use of water casing.
At present, well sleeve pipe reducing place takes tap butt welding ways of connecting to realize that the big and small sheath reducing connects usually.Owing to need welding, make the mechanical strength and the corrosion resistance variation of sleeve pipe, thereby in production run fracture or corrosion failure easily, finally cause well to shake out, go out salt water and scrap.
The purpose of this utility model is to provide a kind of big and small sheath reducing to connect and uses the well reducer union, can not cause damage to casing strength and antiseptic property when utilizing this kind joint to connect.
The utility model is to realize like this.This kind reducer union changes in the past the Placement with the big and small sheath butt welding, adopts integral cast steel spare, and two is provided with screw thread, directly and big and small sheath with screwed connection.This reducer union is made of upper, middle, and lower part, wherein: the top inner headed face mark cun female thread that matches with the big sleeve pipe pin thread of well, the bottom periphery mark cun external screw thread that matches with well small casing box, the middle part is the toroidal chamfered transition.Owing to adopt one-time formed integral cast steel spare, this reducer union can rely on its up and down two ends screw thread directly with its above big sleeve pipe and the small casing of below be connected respectively, and no longer need to weld, thereby its intensity is improved greatly, cause harmful effect to the mechanical strength of sleeve pipe and antiseptic property are also unlikely.
The utility model adopts monolithic construction; changed and taked the butt welding mode to realize that reducer union connects the way of big and small sheath in the past; utilize this kind reducer union can improve the mechanical strength and the antiseptic property of joint and big and small sheath greatly; prolong well maintenance and revision cycle; prolong well working life, the protection water layer is not contaminated.The utility model is simple in structure, and is easy to use, can obtain good economic and social benefits, is suitable for and applies.
Accompanying drawing is a structural representation of the present utility model.
Below in conjunction with accompanying drawing enforcement of the present utility model is illustrated.
As shown in the figure, the utility model is made up of top 1, middle part 2 and bottom 3, and wherein: top 1 inner headed face has the female thread that matches with big sleeve pipe, and bottom 3 cylindricals are worn the external screw thread that matches with small casing, middle part 2 is the toroidal chamfered transition, and its wall thickness is greater than the upper and lower part.
Claims (1)
1. well reducer union, form by top (1), middle part (2) and bottom (3), it is characterized in that: this joint adopts integral cast steel spare, top (1) the inner headed face mark cun female thread that matches with the big sleeve pipe of well, bottom (3) the periphery mark cun external screw thread that matches with the well small casing, middle part (2) is the toroidal chamfered transition, and its wall thickness is greater than the upper and lower part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224629 CN2302384Y (en) | 1997-08-21 | 1997-08-21 | Variable diameter joint for water well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224629 CN2302384Y (en) | 1997-08-21 | 1997-08-21 | Variable diameter joint for water well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2302384Y true CN2302384Y (en) | 1998-12-30 |
Family
ID=33938913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224629 Expired - Fee Related CN2302384Y (en) | 1997-08-21 | 1997-08-21 | Variable diameter joint for water well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2302384Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251749A (en) * | 2011-05-26 | 2011-11-23 | 天津钢管集团股份有限公司 | Phi 406-phi 130 large-caliper petroleum casing pipe variable-diameter joint and manufacturing method thereof |
| CN104088649A (en) * | 2014-06-27 | 2014-10-08 | 上海隧道工程股份有限公司 | Reducer union for composite material stacking lining component connection |
| CN105333254A (en) * | 2015-11-30 | 2016-02-17 | 何翔 | Pipeline flexible joint |
-
1997
- 1997-08-21 CN CN 97224629 patent/CN2302384Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251749A (en) * | 2011-05-26 | 2011-11-23 | 天津钢管集团股份有限公司 | Phi 406-phi 130 large-caliper petroleum casing pipe variable-diameter joint and manufacturing method thereof |
| CN104088649A (en) * | 2014-06-27 | 2014-10-08 | 上海隧道工程股份有限公司 | Reducer union for composite material stacking lining component connection |
| CN105333254A (en) * | 2015-11-30 | 2016-02-17 | 何翔 | Pipeline flexible joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |