CN209539306U - Expansion type female coupling tap - Google Patents
Expansion type female coupling tap Download PDFInfo
- Publication number
- CN209539306U CN209539306U CN201920178724.3U CN201920178724U CN209539306U CN 209539306 U CN209539306 U CN 209539306U CN 201920178724 U CN201920178724 U CN 201920178724U CN 209539306 U CN209539306 U CN 209539306U
- Authority
- CN
- China
- Prior art keywords
- junk
- female coupling
- middle section
- ontology
- coupling tap
- 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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- Earth Drilling (AREA)
Abstract
A kind of expansion type female coupling tap.Mainly solve the problems, such as that existing salvaging uses thread making mode low success rate of when salvaging hard junk with female coupling tap.It is characterized by: ontology (1) the middle section diameter is less than both ends diameter, ontology (1) right end is provided with horn mouth (4), the strip hole (3) of several axial directions is provided on the side wall of middle section, and middle section inner wall is equipped with saw-tooth thread (3).The expansion type female coupling tap is salvaged after can holding hard junk tightly, increases the success rate for salvaging hard junk.
Description
Technical field
The utility model relates to oilfield, specifically a kind of expansion type female coupling tap.
Background technique
When salvaging the movable bar class junk of underground fishing hard in oil well repairing operation at present, usually used female coupling tap is nothing
Stitch steel pipe, internal to go out internal screw thread according to certain taper vehicle, when salvaging utilizes jointed rod, adds a lower pressure to rotate, in junk
Screw thread is produced in upper pressure, realizes the salvaging of junk.But since hard, motion bar class junk hardness have been above female coupling tap hardness,
And junk is not fixed, therefore is difficult to produce screw thread in such a way that original female coupling tap is by taper thread making, leads to junk success rate
It is low.
Utility model content
In order to overcome existing salvaging low success rate of deficiency, this reality when salvaging hard junk using thread making mode with female coupling tap
A kind of expansion type female coupling tap is provided with novel, which salvages after can holding hard junk tightly, increases salvaging hard
The success rate of junk.
The technical solution of the utility model is: a kind of expansion type female coupling tap, including ontology, ontology middle section diameter is less than two
Diameter is held, ontology right end is provided with horn mouth, the strip hole of several axial directions is provided on the side wall of middle section, and middle section inner wall is equipped with saw
Tooth form screw thread.
The utility model has the following beneficial effects: when device salvaging hard is fallen, not needed due to taking above scheme
The thread making on junk, but clamp junk by elasticity, substantially increase the success rate of salvaging.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the sectional view of the A-A along Fig. 1；
Fig. 3 is the enlarged drawing in Fig. 1 at I.
1- ontology in figure, 2- saw-tooth thread, 3- strip hole, 4- horn mouth.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
As shown in Fig. 1 to Fig. 3, a kind of expansion type female coupling tap, including ontology 1, it is straight that the 1 middle section diameter of ontology is less than both ends
Diameter, and middle section internal diameter is slightly less than salvaging hard junk diameter.1 left end of ontology is internal screw thread, can be connected with drilling rod, and in middle section
Wall is equipped with saw-tooth thread 3, can enhance surface hardness with increasing friction force, surface carburization processing, length matches with junk.
The strip hole 3 of several axial directions is provided on 1 middle section side wall of ontology, making ontology radially has certain elasticity, when junk into
When entering into ontology, it can be held tightly.1 right end of ontology is provided with horn mouth 4, can be convenient junk entrance.
When salvaging hard junk, which is connected by screw thread with drilling rod, in decentralization, underground hard junk
Body interior can be entered by horn mouth 4, when entering ontology middle section, by the deflection of itself, it is certain to be bumped into junk
Length is realized by screen resilience occlusion junk and is salvaged.
Claims (1)
1. a kind of expansion type female coupling tap, including ontology (1), it is characterised in that: ontology (1) the middle section diameter is less than both ends diameter,
Ontology (1) right end is provided with horn mouth (4), the strip hole (3) of several axial directions is provided on the side wall of middle section, and middle section inner wall is equipped with
Saw-tooth thread (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920178724.3U CN209539306U (en) | 2019-01-31 | 2019-01-31 | Expansion type female coupling tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920178724.3U CN209539306U (en) | 2019-01-31 | 2019-01-31 | Expansion type female coupling tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209539306U true CN209539306U (en) | 2019-10-25 |
Family
ID=68272903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920178724.3U Expired - Fee Related CN209539306U (en) | 2019-01-31 | 2019-01-31 | Expansion type female coupling tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209539306U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911106A (en) * | 2020-08-07 | 2020-11-10 | 盾构及掘进技术国家重点实验室 | Fishing device for taking out shallow drilling core and using method thereof |
-
2019
- 2019-01-31 CN CN201920178724.3U patent/CN209539306U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911106A (en) * | 2020-08-07 | 2020-11-10 | 盾构及掘进技术国家重点实验室 | Fishing device for taking out shallow drilling core and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20210131 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |