CN202481516U - Novel protection device for external threads at end of steel tube of petroleum well - Google Patents
Novel protection device for external threads at end of steel tube of petroleum well Download PDFInfo
- Publication number
- CN202481516U CN202481516U CN2011205687498U CN201120568749U CN202481516U CN 202481516 U CN202481516 U CN 202481516U CN 2011205687498 U CN2011205687498 U CN 2011205687498U CN 201120568749 U CN201120568749 U CN 201120568749U CN 202481516 U CN202481516 U CN 202481516U
- Authority
- CN
- China
- Prior art keywords
- groove
- protection ring
- oil well
- ring
- end outside
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 230000004224 protection Effects 0.000 title claims abstract description 33
- 239000003208 petroleum Substances 0.000 title abstract 2
- 229920003023 plastic Polymers 0.000 claims abstract description 27
- 239000004033 plastic Substances 0.000 claims abstract description 27
- 239000003129 oil well Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- 238000009434 installation Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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Abstract
The utility model provides a novel protection device for external threads at an end of a steel tube of a petroleum well. The novel protection device comprises a steel ring shell. A plastic protection ring matching with the steel ring shell is sleeved on an inner circle of the steel ring shell, internal threads matching with the external threads at the end of the steel tube of the well are manufactured on an inner circle of the plastic protection ring, reinforcing ribs are axially manufactured on an outer circle of the plastic protection ring, grooves I are disposed on the reinforcing ribs, and bumps are manufactured on the inner wall of the steel ring shell and positioned in the grooves I. The bonding strength of a steel ring and the plastic protection ring is improved by changing the structure of the steel ring and the structure of the plastic protection ring under the condition that the thickness of the steel ring is not increased, check blocks are disposed on an upper seal of the plastic protection ring, and accordingly the protection device is installed and detached conveniently without increasing cost.
Description
Technical field
The utility model is used for the oil well water pipe precaution, is specifically related to a kind of nonpetroleum oil well steel pipe pipe end outside thread fender guard.
Background technology
With the immediate prior art of the utility model is " oil well pipe end outside thread fender guard " (ZL201020543943.6) utility model patent; Though this patent has solved the protection externally threaded to pipe end, has complex structure, manufacture difficulty is big; Cost of labor is high; Deviation from circular from is big, and therefore drawbacks such as loading and unloading inconvenience are necessary to improve.
The utility model content
The technical matters that the utility model solves: a kind of nonpetroleum oil well steel pipe pipe end outside thread fender guard is provided; Under the situation that does not increase steel loop thickness; Through changing the structure of steel loop and plastics protection ring; Increase the anchoring strength of steel loop and plastics protection ring, through block being set sealing on the plastics protection ring, do not increasing the problem that has solved the fender guard easy installation and removal under the condition of cost simultaneously.
The technical scheme that the utility model adopts: nonpetroleum oil well steel pipe pipe end outside thread fender guard; Comprise the steel loop housing, be set with the plastics protection ring suitable on the interior circle of said steel loop housing, be shaped on the interior circle of said plastics protection ring and the suitable negative thread of oil well steel pipe pipe end outside thread with it; Be shaped on reinforced rib on the cylindrical of said plastics protection ring vertically; And have groove I on the reinforced rib, be shaped on convexity on the inwall of said steel loop housing, and make convexity be positioned at groove I.
Further, said convexity is shaped through compacting groove II on the external wall of steel ring shell.
Wherein, said groove I is triangular in shape, and said convexity is the suitable triangle with groove I.
Wherein, said groove I is rectangular, and said convexity is the suitable rectangle with groove I.
Further, the sealing of the external port of said plastics protection ring, and be uniformly distributed with block on its outer face.
The utility model compared with prior art has reinforced rib on its plastics protection ring outer wall; And has groove on the reinforced rib; Be suppressed with the convexity suitable on the steel loop housing with groove; Strengthen the anchoring strength of steel loop and plastics protection ring, through on the plastics protection ring, sealing block has been set simultaneously, solved the problem of fender guard easy installation and removal.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the plastics protection ring structural representation of the utility model.
The specific embodiment
A kind of embodiment of the utility model is described below in conjunction with accompanying drawing 1,2.
Nonpetroleum oil well steel pipe pipe end outside thread fender guard; Comprise steel loop housing 1, be set with the plastics protection ring 2 suitable on the interior circle of said steel loop housing 1, be shaped on the interior circle of said plastics protection ring 2 and the suitable negative thread 5 of oil well steel pipe pipe end outside thread with it; Be shaped on reinforced rib 8 on the cylindrical of said plastics protection ring 2 vertically; And have groove I 9 on the reinforced rib 8, be shaped on convexity 6 on the inwall of said steel loop housing 1, and make protruding 6 to be positioned at groove I 9.Specifically, said protruding 6 are shaped through compacting groove II 7 on steel loop housing 1 outer wall, and wherein, diameter is greater than the steel pipe of 139.7mm, and groove I 9 is rectangular, and said protruding 6 are the rectangle suitable with groove I 9; Diameter is less than the steel pipe of 139.7mm, and groove I 9 is triangular in shape, and said protruding 6 are the triangle suitable with groove I 9.The external port sealing of said plastics protection ring 2 through on the outer face that seals on the plastics protection ring 24, being uniformly distributed with block 3, has solved the problem of fender guard easy installation and removal simultaneously.
All oil well steel pipe outside thread protections that the utility model is fit between the diameter 60.3mm-339.7mm are used,
The foregoing description, just the preferred embodiment of the utility model is not to be used for limiting the utility model practical range, so all equivalences of being done with the said content of the utility model claim change, all should be included within the utility model claim scope.
Claims (6)
1. nonpetroleum oil well steel pipe pipe end outside thread fender guard; Comprise steel loop housing (1); Be set with the plastics protection ring (2) suitable on the interior circle of said steel loop housing (1) with it; Be shaped on the negative thread (5) suitable on the interior circle of said plastics protection ring (2), it is characterized in that: be shaped on reinforced rib (8) on the cylindrical of said plastics protection ring (2) vertically, and have groove I (9) on the reinforced rib (8) with oil well steel pipe pipe end outside thread; Be shaped on convexity (6) on the inwall of said steel loop housing (1), and make convexity (6) be positioned at groove I (9).
2. nonpetroleum oil well steel pipe pipe end outside thread fender guard according to claim 1 is characterized in that: said convexity (6) is shaped through compacting groove II (7) on steel loop housing (1) outer wall.
3. nonpetroleum oil well steel pipe pipe end outside thread fender guard according to claim 1 and 2, it is characterized in that: said groove I (9) is triangular in shape, and said convexity (6) is the suitable triangle with groove I (9).
4. nonpetroleum oil well steel pipe pipe end outside thread fender guard according to claim 1 and 2, it is characterized in that: said groove I (9) is rectangular, and said convexity (6) is the suitable rectangle with groove I (9).
5. nonpetroleum oil well steel pipe pipe end outside thread fender guard according to claim 3 is characterized in that: the external port sealing of said plastics protection ring (2), and be uniformly distributed with block (3) on its outer face (4).
6. nonpetroleum oil well steel pipe pipe end outside thread fender guard according to claim 4 is characterized in that: the external port sealing of said plastics protection ring (2), and be uniformly distributed with block (3) on its outer face (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205687498U CN202481516U (en) | 2011-12-30 | 2011-12-30 | Novel protection device for external threads at end of steel tube of petroleum well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205687498U CN202481516U (en) | 2011-12-30 | 2011-12-30 | Novel protection device for external threads at end of steel tube of petroleum well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202481516U true CN202481516U (en) | 2012-10-10 |
Family
ID=46955961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205687498U Expired - Lifetime CN202481516U (en) | 2011-12-30 | 2011-12-30 | Novel protection device for external threads at end of steel tube of petroleum well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202481516U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555065A (en) * | 2015-01-14 | 2015-04-29 | 浙江天衣机械有限公司 | Protection ring for external thread at pipe end |
| CN105000265A (en) * | 2015-07-02 | 2015-10-28 | 宝鸡市金城机器制造有限责任公司 | Novel protective device for pipe end external threads of petroleum well steel pipe |
| CN106526682A (en) * | 2016-11-30 | 2017-03-22 | 中国科学院武汉岩土力学研究所 | Electrode protection device for conducting cross-hole CT test by utilizing super-high-density electrical instrument |
| CN112678336A (en) * | 2020-12-18 | 2021-04-20 | 中国二十冶集团有限公司 | Protective cap of net rack rod piece high-strength bolt |
-
2011
- 2011-12-30 CN CN2011205687498U patent/CN202481516U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104555065A (en) * | 2015-01-14 | 2015-04-29 | 浙江天衣机械有限公司 | Protection ring for external thread at pipe end |
| CN105000265A (en) * | 2015-07-02 | 2015-10-28 | 宝鸡市金城机器制造有限责任公司 | Novel protective device for pipe end external threads of petroleum well steel pipe |
| CN105000265B (en) * | 2015-07-02 | 2019-03-29 | 宝鸡市金城机器制造有限责任公司 | The new-type protective device of oil well steel tube end external screw thread |
| CN106526682A (en) * | 2016-11-30 | 2017-03-22 | 中国科学院武汉岩土力学研究所 | Electrode protection device for conducting cross-hole CT test by utilizing super-high-density electrical instrument |
| CN112678336A (en) * | 2020-12-18 | 2021-04-20 | 中国二十冶集团有限公司 | Protective cap of net rack rod piece high-strength bolt |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121010 |