CN208587106U - Anti-freezing oil pipe is shorted - Google Patents
Anti-freezing oil pipe is shorted Download PDFInfo
- Publication number
- CN208587106U CN208587106U CN201821274904.3U CN201821274904U CN208587106U CN 208587106 U CN208587106 U CN 208587106U CN 201821274904 U CN201821274904 U CN 201821274904U CN 208587106 U CN208587106 U CN 208587106U
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- China
- Prior art keywords
- outer tube
- tube
- inner tube
- dovetail groove
- ptc heater
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Abstract
The utility model belongs to oil production equipment field, more particularly to a kind of anti-freezing oil pipe is shorted, including shell and it is included in the intracorporal PTC heater of shell, shell includes outer tube and inner tube, outer tube and the maximum outside diameter of inner tube are not more than 88.9mm, the upper end of outer tube is machined with oil pipe internal screw thread, the lower end of inner tube is machined with oil tube external thread, the lower end of outer tube is threadedly attached in the outside of inner tube, the upper end of inner tube is plugged on the inside of outer tube, the dovetail groove of the strip for installing PTC heater is machined on the inside of outer tube, the direction of center line of length direction and outer tube of dovetail groove is consistent, dovetail groove at least there are three, each dovetail groove is uniformly distributed on the inner wall of outer tube, PTC heater is inserted into dovetail groove along the axial direction of outer tube, after the completion of outer tube is connected with inner tube, the both ends of the PTC heater by outer tube and Inner tube clamps.The utility model is compact-sized, diameter be no more than common tubing coupling diameter, therefore install and it is more convenient to use.
Description
Technical field
The utility model belongs to oil production equipment field more particularly to a kind of anti-freezing oil pipe is shorted.
Background technique
Oil pipe short circuit is common a kind of infrastructure in petroleum production engineering, is frequently used in oil-water well well head or ground one
Under close at well head.North of china in winter is colder, and the oil pipe at well head or at well head, which is shorted, is easy frost, it is therefore necessary to right
Well head carries out heat tracing.In the prior art, ribbon heater or water jacket are generallyd use and carries out heat tracing, but the volume of this heat tracing mode compared with
Greatly, heating efficiency is also poor.
Summary of the invention
The utility model provides a kind of anti-freezing oil pipe short circuit, to solve the problems, such as to propose in the prior art.
Prevent the technical problem solved by the utility model is implemented by the following technical solutions: the utility model provides one kind
Frozen oil pipe is shorted, including shell and is included in the intracorporal PTC heater of shell, and the shell includes outer tube and inner tube, outer tube and
The maximum outside diameter of inner tube is not more than 88.9mm, and the upper end of outer tube is machined with oil pipe internal screw thread, and the lower end of inner tube is machined with outside oil pipe
Screw thread, the lower end of outer tube are threadedly attached in the outside of inner tube, and the upper end of inner tube is plugged on the inside of outer tube, the inside of outer tube
It is machined with the dovetail groove of the strip for installing PTC heater, the direction of the center line of the length direction and outer tube of dovetail groove
Unanimously, dovetail groove at least there are three, each dovetail groove is uniformly distributed on the inner wall of outer tube, and the PTC heater is along outer tube
It is axially inserted into dovetail groove, after the completion of outer tube is connected with inner tube, the both ends of the PTC heater are by outer tube and interior pipe clamp
Tightly, to realize axial limiting.
Be provided with press strip between two adjacent dovetail grooves, press strip is made of nylon material, press strip and PTC heater it
Between, between press strip and inner tube be transition fit.
The utility model has the following beneficial effects:
1, the utility model is compact-sized, and diameter is no more than the diameter of common tubing coupling, therefore installs and use more
Add conveniently.In addition, the shell of the utility model is only made of two parts of outer tube and inner tube, number of parts is few, thus substantially
Processing cost is reduced, while saving assembly time.
2, the PTC heater in the utility model is arranged using encircling type, compared with prior art, effectively increases hot merit
Rate and heating efficiency, so as to improve antifreezing effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the sectional view in Fig. 1 at A；
Fig. 3 is the sectional view of outer tube.
In figure: 1- oil pipe internal screw thread, 2- outer tube, 3-PTC heater, 4- inner tube, 5- oil tube external thread, 6- dovetail groove, 7-
Press strip.
Specific embodiment
The utility model is described further below in conjunction with attached drawing:
The present embodiment includes shell and is included in the intracorporal PTC heater 3 of shell, 3 heating power of PTC heater, thus real
Existing heat tracing.The electric wire drawn on PTC heater 3 is drawn and is connected to power supply after the tube wall of outer tube, to realize that PTC generates heat
The power supply of body 3.
The shell includes outer tube 2 and inner tube 4, and the maximum outside diameter of outer tube 2 and inner tube 4 is not more than 88.9mm, 88.9mm
For the diameter for commonly using box cupling, the integral diameter of the utility model is no more than the diameter of common tubing coupling, therefore installs and make
With more convenient.
The upper end of outer tube 2 is machined with oil pipe internal screw thread 1, and the lower end of inner tube 4 is machined with oil tube external thread 5, the lower end of outer tube 2
It is threadedly attached in the outside of inner tube 4, the upper end of inner tube 4 is plugged on the inside of outer tube 2.Shell is only by outer tube 2 and inner tube 4
Two part compositions, number of parts is few, to significantly reduce processing cost, while saving assembly time.
The inside of outer tube 2 is machined with the dovetail groove 6 of the strip for installing PTC heater 3, the length side of dovetail groove 6
To consistent with the direction of the center line of outer tube 2, dovetail groove 6 at least there are three, each dovetail groove 6 uniformly divides on the inner wall of outer tube 2
Cloth, the PTC heater 3 are inserted into dovetail groove 6 along the axial direction of outer tube 2.PTC heater 3 arranged using encircling type, and existing
There is technology to compare, effectively increase thermal power and heating efficiency, so as to improve antifreezing effect.
After the completion of outer tube 2 and inner tube 4 connect, the both ends of the PTC heater 3 are clamped by outer tube 2 and inner tube 4, with reality
Existing axial limiting.
It is provided with press strip 7 between two adjacent dovetail grooves 6, press strip 7 is made of nylon material, press strip 7 and PTC heater
Between 3, between press strip 7 and inner tube 4 be transition fit.Press strip 7 can be in the case where no fastener be fixed by PTC heater
3 securely fix, and prevent its vibration in shell.
Claims (2)
1. a kind of anti-freezing oil pipe is shorted, it is characterised in that: including shell and it is included in the intracorporal PTC heater (3) of shell, it is described
Shell includes outer tube (2) and inner tube (4), and the maximum outside diameter of outer tube (2) and inner tube (4) is not more than 88.9mm, the upper end of outer tube (2)
It is machined with oil pipe internal screw thread (1), the lower end of inner tube (4) is machined with oil tube external thread (5), and the lower end of outer tube (2) is connected by screw thread
The outside in inner tube (4) is connect, the upper end of inner tube (4) is plugged on the inside of outer tube (2), and outer tube is machined on the inside of (2) for pacifying
Fill the dovetail groove (6) of the strip of PTC heater (3), the direction of the center line of the length direction and outer tube (2) of dovetail groove (6)
Unanimously, dovetail groove (6) at least there are three, each dovetail groove (6) is uniformly distributed on the inner wall of outer tube (2), the PTC heater
(3) axial direction along outer tube (2) is inserted into dovetail groove (6), after the completion of outer tube (2) and inner tube (4) connection, the PTC fever
The both ends of body (3) are clamped by outer tube (2) and inner tube (4), to realize axial limiting.
2. a kind of anti-freezing oil pipe according to claim 1 is shorted, it is characterised in that: between two adjacent dovetail grooves (6)
It is provided with press strip (7), press strip (7) is made of nylon material, between press strip (7) and PTC heater (3), press strip (7) and inner tube
It (4) is transition fit between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821274904.3U CN208587106U (en) | 2018-08-09 | 2018-08-09 | Anti-freezing oil pipe is shorted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821274904.3U CN208587106U (en) | 2018-08-09 | 2018-08-09 | Anti-freezing oil pipe is shorted |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208587106U true CN208587106U (en) | 2019-03-08 |
Family
ID=65543251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821274904.3U Active CN208587106U (en) | 2018-08-09 | 2018-08-09 | Anti-freezing oil pipe is shorted |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208587106U (en) |
-
2018
- 2018-08-09 CN CN201821274904.3U patent/CN208587106U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200319 Address after: 163000 Guangfeng street, Guangfeng District, Daqing, Heilongjiang Province, No. 23-2 Guangming Street Patentee after: DAQING HUAYU PETROLEUM MACHINERY MANUFACTURING Co.,Ltd. Address before: 163000, 4, North Road, torch village, Saertu District, Heilongjiang, Daqing Patentee before: DALIAN SHENGWEI MACHINERY MANUFACTURING Co.,Ltd. |
|
| TR01 | Transfer of patent right |