CN203515362U - Coupling for petroleum casing pipe - Google Patents
Coupling for petroleum casing pipe Download PDFInfo
- Publication number
- CN203515362U CN203515362U CN201320291345.8U CN201320291345U CN203515362U CN 203515362 U CN203515362 U CN 203515362U CN 201320291345 U CN201320291345 U CN 201320291345U CN 203515362 U CN203515362 U CN 203515362U
- Authority
- CN
- China
- Prior art keywords
- flange
- casing pipe
- pipe
- upper flange
- lower flange
- 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
Links
- 239000003208 petroleum Substances 0.000 title claims abstract description 26
- 230000008878 coupling Effects 0.000 title abstract 4
- 238000010168 coupling process Methods 0.000 title abstract 4
- 238000005859 coupling reaction Methods 0.000 title abstract 4
- 210000002445 nipple Anatomy 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 238000005485 electric heating Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 4
- 229920002396 Polyurea Polymers 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 238000013022 venting Methods 0.000 abstract 2
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 abstract 1
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Images
Abstract
The utility model relates to the technical field of an auxiliary apparatus of a petroleum pipeline and especially relates to a coupling for a petroleum casing pipe. The coupling for the petroleum casing pipe prevents the casing pipe icing, thereby guaranteeing normal use of the casing pipe. The coupling for the petroleum casing pipe comprises a well mouth flange, a reinforcing short nipple, a slip, an internal casing pipe, a venting pipe, an upper flange and a lower flange, wherein the internal casing pipe is connected with the well mouth flange; the well mouth flange is fixedly connected with the upper flange via the reinforcing short nipple; the upper flange is connected with the lower flange; the lower flange is fixed to the internal casing pipe via the slip; the internal casing pipe between the upper flange and the well mouth flange is provided with the venting pipe; an external casing pipe is fixed to the external side of the internal casing pipe; a connecting part between the upper flange and the lower flange is provided with a seal ring; the outer walls of the reinforcing short nipple and the external casing pipe are both provided with an insulation layer made of hard polyurethane; and side walls of the well mouth flange, the upper flange and the lower flange are all provided with an electrical heating pipe.
Description
Technical field
The utility model relates to petroleum pipeline fixture technical field, particularly relates to a kind of box cupling for petroleum casing pipe.
Background technology
As everyone knows, for the box cupling of petroleum casing pipe, be a kind of of petroleum pipeline fixture, be widely used in field of petroleum exploitation; The existing box cupling for petroleum casing pipe comprises wellhead flange, reinforces pipe nipple, slips, inner sleeve, bleeder pipe, upper flange and lower flange, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, between lower flange and inner sleeve, by slips, fix, inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe of inner sleeve, and upper flange and lower flange junction are provided with sealing ring; This box cupling for petroleum casing pipe is used to be found; due to the winter cold; especially northern the Northeast often there will be icing or contiguous icing state (it is generally subzero 60 degrees Celsius to 30 degrees Celsius above freezing that oil freezes), thereby causes whole box cupling to use.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of preventing to freeze, thereby ensures the normal box cupling for petroleum casing pipe using.
Box cupling for petroleum casing pipe of the present utility model, comprise wellhead flange, reinforce pipe nipple, slips, inner sleeve, bleeder pipe, upper flange and lower flange, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, between lower flange and inner sleeve, by slips, fix, inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe of inner sleeve, upper flange and lower flange junction are provided with sealing ring; On the outer wall of described reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer, on described wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube.
Box cupling for petroleum casing pipe of the present utility model, is provided with polyureas topping on the outer wall of described hard polyaminoester insulation layer.
Box cupling for petroleum casing pipe of the present utility model, also comprises controller and gauge tap, and described gauge tap is electrically connected to electric heating tube, and described controller is electrically connected to gauge tap.
Box cupling for petroleum casing pipe of the present utility model, described controller is electrically connected to by wireless signal with described gauge tap.
Compared with prior art the beneficial effects of the utility model are: on the outer wall of reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer, on wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube; Like this, thereby can prevent that single unit system from freezing by electric heater for heating, and can reach better heat insulation effect by hard polyaminoester insulation layer, thereby reduce the electrical heating time, save the energy, finally effectively ensure that single unit system normally uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, box cupling for petroleum casing pipe of the present utility model, comprise wellhead flange 1, reinforce pipe nipple 2, slips 3, inner sleeve 4, bleeder pipe 5, upper flange 6 and lower flange 7, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, between lower flange and inner sleeve, by slips, fix, inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe 8 of inner sleeve, upper flange and lower flange junction are provided with sealing ring 9; On the outer wall of reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer 10, on wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube 11; Like this, thereby can prevent that single unit system from freezing by electric heater for heating, and can reach better heat insulation effect by hard polyaminoester insulation layer, thereby reduce the electrical heating time, save the energy, finally effectively ensure that single unit system normally uses.
Box cupling for petroleum casing pipe of the present utility model, is provided with polyureas topping 12 on the outer wall of hard polyaminoester insulation layer.
Box cupling for petroleum casing pipe of the present utility model, also comprises controller and gauge tap, and gauge tap is electrically connected to electric heating tube, and controller is electrically connected to gauge tap.
Box cupling for petroleum casing pipe of the present utility model, controller is electrically connected to by wireless signal with gauge tap.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (4)
1. the box cupling for petroleum casing pipe, comprise wellhead flange, reinforce pipe nipple, slips, inner sleeve, bleeder pipe, upper flange and lower flange, inner sleeve connects wellhead flange, between wellhead flange and upper flange, by reinforcing pipe nipple, be fixedly connected with, upper flange and lower flange link together, and between lower flange and inner sleeve, by slips, fix, and the inner sleeve between upper flange and wellhead flange is provided with bleeder pipe, the outside fixed jacket pipe of inner sleeve, upper flange and lower flange junction are provided with sealing ring; It is characterized in that, on the outer wall of described reinforcing pipe nipple and outer tube, be provided with hard polyaminoester insulation layer, on described wellhead flange, upper flange and lower flange sidewall, be provided with electric heating tube.
2. the box cupling for petroleum casing pipe as claimed in claim 1, is characterized in that, is provided with polyureas topping on the outer wall of described hard polyaminoester insulation layer.
3. the box cupling for petroleum casing pipe as claimed in claim 1, is characterized in that, also comprises controller and gauge tap, and described gauge tap is electrically connected to electric heating tube, and described controller is electrically connected to gauge tap.
4. the box cupling for petroleum casing pipe as claimed in claim 3, is characterized in that, described controller is electrically connected to by wireless signal with described gauge tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320291345.8U CN203515362U (en) | 2013-05-27 | 2013-05-27 | Coupling for petroleum casing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320291345.8U CN203515362U (en) | 2013-05-27 | 2013-05-27 | Coupling for petroleum casing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515362U true CN203515362U (en) | 2014-04-02 |
Family
ID=50374309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320291345.8U Expired - Fee Related CN203515362U (en) | 2013-05-27 | 2013-05-27 | Coupling for petroleum casing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515362U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840112A (en) * | 2016-03-24 | 2016-08-10 | 中国石油天然气股份有限公司 | Surface casing well cementing assembly |
| CN106639902A (en) * | 2016-11-28 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Petroleum sleeve coupling with heat retaining property |
-
2013
- 2013-05-27 CN CN201320291345.8U patent/CN203515362U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105840112A (en) * | 2016-03-24 | 2016-08-10 | 中国石油天然气股份有限公司 | Surface casing well cementing assembly |
| CN106639902A (en) * | 2016-11-28 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Petroleum sleeve coupling with heat retaining property |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Coupling for petroleum casing pipe Effective date of registration: 20140916 Granted publication date: 20140402 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2014990000757 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160902 Granted publication date: 20140402 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2014990000757 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Coupling for petroleum casing pipe Effective date of registration: 20160902 Granted publication date: 20140402 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2016990000764 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180625 Granted publication date: 20140402 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: Blooming Drilling Rig Co., Ltd. Registration number: 2016990000764 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhonghong Xing Petroleum Equipment (Beijing) Co., Ltd. Document name: Notification of Termination of Patent Right |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20190527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |