CN207377506U - A kind of anti-corrosion pumping polished rod - Google Patents
A kind of anti-corrosion pumping polished rod Download PDFInfo
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- CN207377506U CN207377506U CN201721393701.1U CN201721393701U CN207377506U CN 207377506 U CN207377506 U CN 207377506U CN 201721393701 U CN201721393701 U CN 201721393701U CN 207377506 U CN207377506 U CN 207377506U
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Abstract
The utility model is suitable for sucker rod technical field, provides a kind of anti-corrosion pumping polished rod, including the body of rod, the outer surface of the body of rod is coated with stainless steel powder last layer；The two joint portions at body of rod both ends is connected to, connector portions include being equipped with externally threaded thread segment and the linkage section of connection screw thread section and the body of rod, and the diameter of linkage section is less than the diameter of the body of rod and the diameter of thread segment, and thread segment is threadedly coupled with box cupling；First seal, first seal are sheathed on linkage section and for sealing thread segment and the gap of box cupling junction；The stainless steel sheath being sheathed on the body of rod；And be sheathed on the body of rod respectively and be located at the second seal at stainless steel sheath both ends, second seal is used to seal the gap between the body of rod and stainless steel sheath.Anti-corrosion pumping polished rod provided by the utility model makes the anti-corrosion of anti-corrosion pumping polished rod and wear-resisting property good by the way that stainless steel sheath and stainless steel powder last layer is set to carry out duplicate protection to the body of rod.
Description
Technical field
The utility model is related to sucker rod technical field more particularly to a kind of anti-corrosion pumping polished rods.
Background technology
Oil pumping polish rod is the important component for connecting ground pumping unit and rod string, and it is all that it is subjected to rod string
Load, while corrosion, wear and periodical alternating load are still suffered from work.At present during production, the main mistake of sucker rod
Effect form is corrosion-fatigue failure, and corrosion-fatigue failure mainly generates under tensile stress and the collective effect of corrosive medium
's.Due to the presence of the corrosive agent such as mineralizer, oxygen, hydrogen sulfide, carbon dioxide, the mould in oil well, oil pumping polish rod can be aggravated
Corrosion.Therefore, take anti-corrosion measure most important oil pumping polish rod.
In the prior art, oil pumping polish rod in use, the outer surface of oil pumping polish rod directly with sandstone, corrosion in oil well
Property media contact, after prolonged use, the outer surface of oil pumping polish rod is easy to wear and etch pit occurs, so as to cause oil pumping polish rod
It is broken due to insufficient strength, while the screw thread at oil pumping polish rod both ends and the gap of box cupling junction easily enter corrosive liquids, into
And screw thread is caused to corrode, so as to the dismounting of inconvenient oil pumping polish rod.
Therefore, it is necessary to a kind of new anti-corrosion pumping polished rod is provided to solve above-mentioned technical problem.
Utility model content
The technical issues of the utility model solves is to provide a kind of anti-corrosion and the good anti-corrosion pumping polished rod of wear-resisting property.
In order to solve the above technical problems, anti-corrosion pumping polished rod provided by the utility model includes：
The body of rod, the outer surface of the body of rod are coated with stainless steel powder last layer；
Be connected to the two joint portions at the body of rod both ends, the connector portions include equipped with externally threaded thread segment and
The linkage section of the thread segment and the body of rod is connected, the diameter of the linkage section is less than the diameter of the body of rod and the screw thread
The diameter of section, the thread segment are threadedly coupled with box cupling；
First seal, the first seal be sheathed on the linkage section and for seal the thread segment with it is described
The gap of box cupling junction；
The stainless steel sheath being sheathed on the body of rod；And
The body of rod is sheathed on respectively and positioned at the second seal at the stainless steel sheath both ends, the second seal
For sealing the gap between the body of rod and the stainless steel sheath.
Preferably, the body of rod is equipped with the annular groove positioned at the stainless steel sheath both ends, the second seal
It is sheathed on the annular groove.
Preferably, the thickness of the stainless steel powder last layer is 2 millimeters to 3 millimeters.
Preferably, the first seal and the second seal are sealing ring.
Preferably, the first seal and the second seal are wear-resistant ceramic sealing ring.
Preferably, the diameter of the thread segment is less than the diameter of the body of rod.
Preferably, the length of the linkage section is equal with the thickness of the first seal.
Preferably, the outer diameter of the first seal is equal to the outer diameter of the stainless steel sheath.
Compared with correlation technique, anti-corrosion pumping polished rod provided by the utility model has the advantages that：
Anti-corrosion pumping polished rod provided by the utility model is sheathed on the stainless steel sheath of the body of rod, stainless steel sheath by setting
The body of rod is wrapped up, the anti-corrosion pumping polished rod in use, stainless steel sheath and extraneous corrosive liquids or sandstone
It contacts directly, so as to be protected to the body of rod, makes the anti-corrosion of anti-corrosion pumping polished rod and wear-resisting property good.Simultaneously by the body of rod
Outer surface sprays stainless steel powder last layer, and the hardness of stainless steel powder last layer is up to more than HRc56, and stainless steel powder last layer is combined with the body of rod
Intensity afterwards is higher than 400MPa, effectively increases the anti-corrosion and wear-resisting property of polished rod, stainless steel sheath and stainless steel powder last layer shape
Into duplicate protection is carried out to the body of rod, even if the stainless steel sheath damages, which remains to anti-corrosion pumping polished rod
It is protected, so that the anti-corrosion of anti-corrosion pumping polished rod and wear-resisting good reliability.
Description of the drawings
Fig. 1 is the cross-sectional view of the utility model anti-corrosion pumping polished rod；
Fig. 2 is that the utility model anti-corrosion pumping polished rod removes the cross-section structure signal after first seal and second seal
Figure.
Specific embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Referring to Fig.1 and 2, wherein, Fig. 1 is the cross-sectional view of the utility model anti-corrosion pumping polished rod；Fig. 2 is
The utility model anti-corrosion pumping polished rod removes the cross-sectional view after first seal and second seal.The anti-corrosion is taken out
Glossy bar includes the body of rod 1, the two joint portions 2 for being connected to 1 both ends of the body of rod, the stainless steel sheath being sheathed on the body of rod 1
3rd, first seal 4, be sheathed on respectively the body of rod 1 and positioned at 3 both ends of stainless steel sheath second seal 5.
The outer surface of the body of rod 1 is coated with stainless steel powder last layer 6.The hardness of the stainless steel powder last layer 6 is up to HRc56
More than, the intensity after the stainless steel powder last layer 6 is combined with the body of rod 1 is higher than 400MPa.Pass through the appearance in the body of rod 1
Face spraying stainless steel powder last layer 6, since stainless steel powder last layer 6 has preferable corrosion-resistant and wear-resisting property, the stainless steel powder
Last layer 6 wraps up the body of rod 1, avoids the anti-corrosion pumping polished rod body of rod 1 and extraneous corrosive liquid in use
Body or sandstone contact directly, and so as to effectively increase the anti-corrosion of the anti-corrosion pumping polished rod and wear-resisting property, make the anti-corrosion pumping
The service life of polished rod is long.
As one embodiment of the utility model, the thickness of the stainless steel powder last layer 6 is 2 millimeters to 3 millimeters.This is thick
The stainless steel powder last layer 6 under degree both ensure that the anti-corrosion pumping polished rod had good wear-resisting and antiseptic property, also allow for
The spraying of the stainless steel powder last layer 6.
The connector portions 2 are included equipped with externally threaded thread segment 21 and the connection thread segment 21 and the body of rod 1
Linkage section 22, the diameter of the linkage section 22 are less than the diameter of the body of rod 1 and the diameter of the thread segment 21, the thread segment
21 are threadedly coupled with box cupling.Wherein, two anti-corrosion pumping polished rods are mutually butted by box cupling, and anti-corrosion pumping polished rod then passes through outer spiral shell
Line is threadedly coupled with the internal thread on box cupling.
The first seal 4 is sheathed on the linkage section 21 and connects for sealing the thread segment 22 with the box cupling
Connect the gap at place.After the thread segment 21 and box cupling are threadedly coupled, the first seal 4 is sheathed on the linkage section
On 21, the first seal 4 is sealed in the gap of the thread segment 22 and the box cupling junction, prevents the anti-corrosion pumping
Corrosive liquids or gas enter the thread segment 22 and the gap of the box cupling threaded connection place to polished rod in use
Inside cause thread damage and make anti-corrosion pumping polished rod and coupler detaching difficult, so as to the spiral shell to the thread segment 22 and the box cupling
Line is protected.
The stainless steel sheath 3 is sheathed on the body of rod 1 to protect the body of rod 1, is the stainless steel
Sheath 3 is securely sheathed on the body of rod 1, and the both ends of the stainless steel sheath 3 are welded with 1 part of the body of rod.Due to stainless
Steel sheath 3 has preferable anti-corrosion and wear-resisting property, and stainless steel sheath 3 wraps up the body of rod 1, which exists
During use, the stainless steel sheath 3 is contacted directly with extraneous corrosive liquids or sandstone, so as to 1 He of the body of rod
The stainless steel powder last layer 6 is protected, and the stainless steel sheath 3 and the stainless steel powder last layer 6 are formd to the body of rod 1
Duplicate protection is carried out, makes the anti-corrosion of the anti-corrosion pumping polished rod and wear-resisting property good.
The second seal 5 is used to seal the gap between the body of rod 1 and the stainless steel sheath 3.Pass through setting
The second seal 5 prevents corrosive liquids or gas into the 3 inside corrosion stainless steel powder last layer of stainless steel sheath
6 and then corrode the body of rod 1, so as to effectively enhance the antiseptic property of the anti-corrosion pumping polished rod.
As one embodiment of the utility model, the body of rod 1 is equipped with the ring positioned at 3 both ends of stainless steel sheath
Connected in star 11, the second seal 5 are sheathed on the annular groove 11.By setting described in the fixation of annular groove 11
Second seal 5 prevents the second seal 5 from coming off from the body of rod 1.
As one embodiment of the utility model, the first seal 4 and the second seal 5 are sealing
Circle.
As one embodiment of the utility model, the first seal 4 and the second seal 5 are wear-resisting pottery
Porcelain sealing ring.By the way that the first seal 4 and the second seal 5 are arranged to wear-resistant ceramic sealing ring, utilization is wear-resisting
The good wearability of ceramic seal circle, so as to further enhance the wear-resisting property of anti-corrosion pumping polished rod.
As one embodiment of the utility model, the diameter of the thread segment 22 is less than the diameter of the body of rod 1, convenient
It is arranged the stainless steel sheath 3 and the first seal 4.
As one embodiment of the utility model, the thickness of the length of the linkage section 21 and the first seal 4
It is equal, make it is seamless between the first seal 4 and the body of rod 1 and the thread segment 22, so as to improve described first
The sealing performance of sealing element 4.
As one embodiment of the utility model, the outer diameter of the first seal 4 is equal to the stainless steel sheath 3
Outer diameter makes the outer surface flush of the first seal 4 and the stainless steel sheath 3, reduces the anti-corrosion pumping polished rod
In the resistance that process is used to be subject to liquid.
Compared with correlation technique, anti-corrosion pumping polished rod provided by the utility model is sheathed on the stainless of the body of rod by setting
Steel sheath, stainless steel sheath wrap up the body of rod, the anti-corrosion pumping polished rod in use, stainless steel sheath with it is extraneous
Corrosive liquids or sandstone contact directly, and so as to be protected to the body of rod, make the anti-corrosion of anti-corrosion pumping polished rod and wear-resisting property good.
Simultaneously by spraying stainless steel powder last layer in the outer surface of the body of rod, the hardness of stainless steel powder last layer is up to more than HRc56, stainless steel
Intensity after powder bed is combined with the body of rod is higher than 400MPa, effectively increases the anti-corrosion and wear-resisting property of polished rod, stainless steel sheath
It is formd with stainless steel powder last layer and duplicate protection is carried out to the body of rod, even if the stainless steel sheath damages, the stainless steel powder last layer is still
Anti-corrosion pumping polished rod can be protected, so that the anti-corrosion of anti-corrosion pumping polished rod and wear-resisting good reliability.
The above description is only the embodiments of the present invention, and it does not limit the scope of the patent of the present invention, every
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is directly or indirectly used in
Other relevant technical fields, are equally included in the patent within the scope of the utility model.
Claims (8)
1. a kind of anti-corrosion pumping polished rod, which is characterized in that including：
The body of rod, the outer surface of the body of rod are coated with stainless steel powder last layer；
The two joint portions at the body of rod both ends is connected to, the connector portions include being equipped with externally threaded thread segment and connection
The linkage section of the thread segment and the body of rod, the diameter of the linkage section are less than the diameter of the body of rod and the thread segment
Diameter, the thread segment are threadedly coupled with box cupling；
First seal, the first seal are sheathed on the linkage section and for sealing the thread segment and the box cupling
The gap of junction；
The stainless steel sheath being sheathed on the body of rod；And
The body of rod is sheathed on respectively and positioned at the second seal at the stainless steel sheath both ends, the second seal is used for
Seal the gap between the body of rod and the stainless steel sheath.
2. anti-corrosion pumping polished rod according to claim 1, which is characterized in that the body of rod, which is equipped with, is located at the stainless steel
The annular groove at sheath both ends, the second seal are sheathed on the annular groove.
3. anti-corrosion pumping polished rod according to claim 1, which is characterized in that the thickness of the stainless steel powder last layer is 2 millis
Rice is to 3 millimeters.
4. anti-corrosion pumping polished rod according to claim 1, which is characterized in that the first seal and second sealing
Part is sealing ring.
5. anti-corrosion pumping polished rod according to claim 4, which is characterized in that the first seal and second sealing
Part is wear-resistant ceramic sealing ring.
6. anti-corrosion pumping polished rod according to claim 1, which is characterized in that the diameter of the thread segment is less than the body of rod
Diameter.
7. anti-corrosion pumping polished rod according to claim 1, which is characterized in that the length of the linkage section and described first close
The thickness of sealing is equal.
8. anti-corrosion pumping polished rod according to claim 1, which is characterized in that the outer diameter of the first seal is equal to described
The outer diameter of stainless steel sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393701.1U CN207377506U (en) | 2017-10-26 | 2017-10-26 | A kind of anti-corrosion pumping polished rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393701.1U CN207377506U (en) | 2017-10-26 | 2017-10-26 | A kind of anti-corrosion pumping polished rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207377506U true CN207377506U (en) | 2018-05-18 |
Family
ID=62336211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721393701.1U Active CN207377506U (en) | 2017-10-26 | 2017-10-26 | A kind of anti-corrosion pumping polished rod |
Country Status (1)
| Country | Link |
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| CN (1) | CN207377506U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821419A (en) * | 2019-12-22 | 2020-02-21 | 山东未来石油技术开发有限公司 | High-temperature-resistant, corrosion-resistant and hydrogen sulfide-resistant composite sucker rod |
| CN112096305A (en) * | 2020-11-05 | 2020-12-18 | 东营市三和石油装备有限公司 | Stainless steel solid sucker rod wrapped with stainless steel and preparation method thereof |
-
2017
- 2017-10-26 CN CN201721393701.1U patent/CN207377506U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821419A (en) * | 2019-12-22 | 2020-02-21 | 山东未来石油技术开发有限公司 | High-temperature-resistant, corrosion-resistant and hydrogen sulfide-resistant composite sucker rod |
| CN112096305A (en) * | 2020-11-05 | 2020-12-18 | 东营市三和石油装备有限公司 | Stainless steel solid sucker rod wrapped with stainless steel and preparation method thereof |
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