CN205063851U - Integral type sucker rod pottery column centralizer - Google Patents
Integral type sucker rod pottery column centralizer Download PDFInfo
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- CN205063851U CN205063851U CN201520865983.5U CN201520865983U CN205063851U CN 205063851 U CN205063851 U CN 205063851U CN 201520865983 U CN201520865983 U CN 201520865983U CN 205063851 U CN205063851 U CN 205063851U
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- cover
- spigot
- socket
- rod body
- sucker rod
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Abstract
The utility model provides an integral type sucker rod pottery column centralizer belongs to oil recovery auxiliary device, including rightting the pole body, rightting pole body one end and being equipped with first outer union, the other end is connected with the nipple, the cover is right to the cover on rightting the pole body, set upright or straight the cover including pottery cover and nylon cover, the external diameter of nipple is greater than the internal diameter of pottery cover is less than the external diameter of pottery cover, the pottery ways in right on the pole body, nylon cover wrap up in the pottery is sheathe in, and this kind of integral type sucker rod pottery column centralizer has the nylon cover at pottery cover overcoat, and ceramic cover does not expose in the outside, has avoided ceramic cover to take place to collide with in the transport in the assembly and in to oil pipe. This kind of centralizer has not only avoided ceramic cover to take place broken phenomenon, has still increased the life of centralizer.
Description
Technical field
The utility model relates to oil recovery servicing unit, in particular to a kind of integrated sucker rod pottery column centralizer.
Background technology
In the system utilizing pumping production, if producing well is inclined shaft, will there is extremely eccentric wear in sucker rod and oil pipe, sucker rod heavy wear will occur in use for some time, cause de-bar, disconnected bar, wearing and tearing oil pipe phenomenon, thus normally carrying out of pumping operation can not be ensured.At present, in engineering, the friction between sucker rod and oil pipe avoided by a kind of ceramic centralizer of normal employing, and the supporting positive cover of this ceramic centralizer is that ceramic materials is made.But in the installation of ceramic centralizer and when carrying in oil pipe, the supporting positive cover due to ceramic material is exposed to outside, is easy to the generation slight crack that collides with.If Timeliness coverage, then need to change supporting positive cover, have impact on operating efficiency; If non-Timeliness coverage, after ceramic centralizer, after entering well, fragmentation occurs, be easy to holddown phenomenon occurs, cause repetition operation, double to increase workover cost, cause unnecessary economic loss.
Utility model content
The purpose of this utility model is to provide a kind of integrated sucker rod pottery column centralizer, to improve the problems referred to above.
The utility model is achieved in that
A kind of integrated sucker rod pottery column centralizer, comprise righting rod body, described righting rod body one end is provided with the first socket, the other end is connected with spigot, on described righting rod body, cover has supporting positive cover, and described supporting positive cover comprises ceramic jacket and nylon jacket, and the internal diameter that the external diameter of described spigot is greater than described ceramic jacket is less than the external diameter of described ceramic jacket, described ceramic jacket is placed on described righting rod body, and described nylon jacket is placed on described ceramic jacket.
The spigot that righting rod body in this device connects directly is connected with sucker rod, and the first socket that righting rod body is provided with is connected with another sucker rod by rod collar, thus is connected by two sucker rods.Supporting positive cover comprises ceramic jacket and nylon jacket, and nylon jacket high temperature is cast on ceramic jacket, and ceramic jacket can wrap up by nylon jacket after casting completely.Ceramic jacket has high temperature resistant, wear-resistant, frangible characteristic, and nylon jacket also has certain abrasion resistance, but is at high temperature more easily worn.To install or when going into the well, because nylon jacket is located at outside ceramic jacket, ceramic jacket can not collide with, ensure that ceramic jacket is arriving the integrality before eccentric wear position.When behind arrival eccentric wear position, oil well inside has higher temperature, and after a period of time, nylon jacket will be worn, and ceramic jacket contacts the effect reaching centering sucker rod with oil pipe.Although after this device work a period of time, nylon jacket can be worn, and nylon jacket also has certain abrasion resistance, increases the application life of whole device.
Further, described righting rod body is provided with the second socket away from one end of described first socket, described spigot and the second socket removably connect, the shaft shoulder is provided with between described righting rod body and described first socket, the internal diameter that the diameter of the described shaft shoulder is greater than described ceramic jacket is less than the external diameter of described ceramic jacket, and described supporting positive cover is located between described spigot and the described shaft shoulder.
In the process of recovering the oil, sucker rod can move up and down in oil pipe, and the centralizer be located between two sucker rods will move up and down along with sucker rod, for avoiding supporting positive cover and spigot to collide, needs the moving range of restriction supporting positive cover on righting rod body.Therefore by arranging the shaft shoulder on righting rod body, the shaft shoulder and spigot are arranged at the two ends of supporting positive cover respectively, define supporting positive cover along righting rod body shaft orientation moving range.Detachably the detachable of supporting positive cover is realized, the replacing of more convenient supporting positive cover by spigot and the second socket.
Further, described second socket is provided with external screw thread, and described spigot is provided with the internal thread matched with described external screw thread.
The mode be threaded connection is to realize the detachable of spigot and the second socket, and the benefit of this structure is, good reliability, is easy to processing, easy installation and removal.
Further, the lateral wall of described spigot is provided with two milling planes be parallel to each other.
The mode that second socket and spigot are threaded connection is connected, because sucker rod operationally can be subject to huge tensile stress, spigot and the second socket also can be subject to huge tensile stress, therefore, occur to loosen to prevent spigot, larger pretightning force is needed between spigot and the second socket, that is, spigot needs very large moment of torsion when tightening, therefore, spigot lateral wall arranges two milling planes that are parallel to each other, easier spigot to be tightened.
Further, described righting rod body and described spigot are structure as a whole, axle journal is provided with between described righting rod body and described first socket, the diameter of described axle journal is less than the internal diameter of described ceramic jacket, described axle journal is provided with external screw thread, described axle journal is bolted with nut, and described supporting positive cover is located between described spigot and described nut.
Jointly limit the shaft orientation moving range of supporting positive cover on righting rod body by socket and nut, avoid supporting positive cover and spigot to collide.Righting rod body and socket are structure as a whole, and enhance both mechanical properties.
Further, described socket offers blind hole, offers internal thread in described blind hole.
The benefit of this structure is, centralizer can be made to dock fast and effectively with sucker rod.
Further, the internal diameter of described ceramic jacket is greater than the diameter of described righting rod body.
The internal diameter of ceramic jacket is greater than the diameter of righting rod body, can ensure that supporting positive cover rotates relative to righting rod body.In the course of the work, after supporting positive cover contacts with oil pipe, if supporting positive cover is subject to skew force, supporting positive cover can rotate on righting rod body, thus reduces the friction between supporting positive cover and oil pipe, increases the application life of centralizer.
Further, described supporting positive cover two ends are equipped with 30 degree of-45 degree chamfering.
Centralizer will realize the function of centering sucker rod, must ensure that the external diameter of ceramic jacket is greater than the appearance and size that the parts of position-limiting action are played at supporting positive cover two ends.When centralizer moves up and down in oil pipe, the resistance of fluid that the end face of supporting positive cover will be subject in oil pipe, thus the resistance adding that whole sucker rod moves up and down, therefore, offer chamfering at supporting positive cover two ends, reduce the resistance of fluid to supporting positive cover.But if the angle of chamfering is excessive, then the length that supporting positive cover can be caused to contact with oil pipe shortens, and supporting positive cover is easy to be worn; If the angle too small of chamfering, then do not have the effect of the resistance reducing fluid, consider two kinds of situations, the angle of the chamfering of supporting positive cover is set to 30 degree to 45 degree.
Further, the angle of described chamfering is 30 degree.
Repeatedly test proof through inventor, when chamfering is 30 degree, fluid less to the resistance of supporting positive cover, the contact length of supporting positive cover and oil pipe shortens and to affect not quite the rate of wear of supporting positive cover.
Further, described righting rod bulk material is 35CrMo alloy.
Righting rod body can be subject to the impact force of top load in the course of the work, and therefore the material of righting rod body is 35CrMo alloy, and 35CrMo alloy has the characteristic of very high static strength, impact toughness and higher fatigue limit.
The beneficial effects of the utility model are:
Supporting positive cover in this device is made up of ceramic jacket and nylon jacket, and ceramic jacket has high temperature resistant, anti abrasive characteristic, can ensure that centralizer has the longer life-span.Nylon jacket is located at outside ceramic jacket, and ceramic jacket also has certain abrasion resistance, avoiding while ceramic jacket collides with, increases the application life of whole device.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, be to be understood that, the following drawings illustrate only some embodiment of the present utility model, therefore the restriction to scope should be counted as, for those of ordinary skill in the art, under the prerequisite not paying creative work, other relevant accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation of the integrated sucker rod pottery column centralizer that Fig. 1 provides for the utility model embodiment 1;
The structural representation of the integrated sucker rod pottery column centralizer that Fig. 2 provides for the utility model embodiment 2.
In figure, Reference numeral is:
Righting rod body 101; First socket 102; Spigot 103; Ceramic jacket 104; Nylon jacket 105; Second socket 106; The shaft shoulder 107; Axle journal 108; Nut 109.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.The assembly of the utility model embodiment describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.
Therefore, below to the detailed description of the embodiment of the present utility model provided in the accompanying drawings and the claimed scope of the present utility model of not intended to be limiting, but selected embodiment of the present utility model is only represented.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to define further it and explain in accompanying drawing subsequently.
In description of the present utility model, it should be noted that, term " " center ", " on ", D score, " left side ", " right side ", " vertically ", " level ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this utility model product orientation of usually putting or position relationship when using, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. only for distinguishing description, and can not be interpreted as instruction or hint relative importance.
In addition, the term such as term " level ", " vertically ", " pendency " does not represent and requires parts abswolute level or pendency, but can tilt a little.As " level " only refers to its direction relatively " vertically " level more, be not that this structure of expression must level completely, but can tilt a little.
In description of the present utility model, also it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Embodiment 1, with reference to Fig. 1
A kind of integrated sucker rod pottery column centralizer, comprise righting rod body 101, described righting rod body 101 one end is provided with the first socket 102, the other end is connected with spigot 103, on described righting rod body 101, cover has supporting positive cover, described supporting positive cover comprises ceramic jacket 104 and nylon jacket 105, the internal diameter that the external diameter of described spigot 103 is greater than described ceramic jacket 104 is less than the external diameter of described ceramic jacket 104, described ceramic jacket 104 is placed on described righting rod body, and described nylon jacket 105 is placed on described ceramic jacket 104.
Described ceramic jacket 104 and nylon jacket 105 are cylindric, and described nylon jacket 105 high temperature is cast on ceramic jacket 104, thus both is fixed.For enabling supporting positive cover rotate on righting rod body 101, the internal diameter of ceramic jacket 104 is set to the diameter being greater than righting rod body 101.The supporting positive cover two ends be made up of ceramic jacket 104 and nylon jacket 105 all offer the chamfering of 30 degree, and namely in cross section, the oblique line of chamfering and horizontal angle are 30 degree.This arrangement reduces the resistance of the fluid in oil pipe to supporting positive cover.
Supporting positive cover will be worn in use for some time, therefore, need to change supporting positive cover, in order to the replacing of more convenient supporting positive cover, described righting rod body 101 is provided with the second socket 106 away from one end of described first socket 102, and described spigot 103 and the second socket 106 removably connect.For avoiding supporting positive cover and spigot 103 in oil recovery process to collide, need the movement of restriction supporting positive cover on righting rod body 101.Therefore, the shaft shoulder 107 is provided with between righting rod body 101 and described first socket 102, the internal diameter that the diameter of the described shaft shoulder 107 is greater than described ceramic jacket 104 is less than the external diameter of described ceramic jacket 104, and described supporting positive cover is located between described spigot 103 and the described shaft shoulder 107.
First socket 102 and the second socket 106 are cylinder, both are equipped with external screw thread, the equal diameters of the first socket 102 and the second socket 106, escape is offered between the first socket 102 and the shaft shoulder 107, so that the externally threaded processing in the first socket 102, the first socket 102 is connected with sucker rod by rod collar.Also escape is offered, so that the externally threaded processing of the second socket 106 between the second socket 106 and righting rod body 101.
Described spigot 103 is cylinder, offers through hole in spigot 103, offers the internal thread that the external screw thread offered with described second socket 106 matches in described through hole.For convenience of being tightened by spigot 103, spigot 103 lateral wall is provided with two milling planes be parallel to each other.After spigot 103 and the second socket 106 are spirally connected, the right side of spigot 103 contacts with the left side of righting rod body 101.
In the present embodiment, the setting of the second socket 106, achieves the detachable of spigot 103 and the second socket 106, thus facilitates the replacing of supporting positive cover; The setting of the shaft shoulder 107, defines the scope that supporting positive cover moves axially along righting rod body 101, avoids ceramic jacket 104 and collides with spigot 103.Supporting positive cover is made up of ceramic jacket 104 and nylon, and ceramic jacket 104 has high temperature resistant, anti abrasive characteristic, can ensure that centralizer has the longer life-span.Nylon jacket 105 is located at outside ceramic jacket 104, and ceramic jacket 104 also has certain abrasion resistance, avoiding while ceramic jacket 104 collides with, increases the application life of whole device.
Embodiment 2, with reference to Fig. 2
A kind of integrated sucker rod pottery column centralizer, comprise righting rod body 101, described righting rod body 101 one end is provided with the first socket 102, the other end is connected with spigot 103, on described righting rod body 101, cover has supporting positive cover, described supporting positive cover comprises ceramic jacket 104 and nylon jacket 105, the internal diameter that the external diameter of described spigot 103 is greater than described ceramic jacket 104 is less than the external diameter of described ceramic jacket 104, described ceramic jacket 104 is placed on described righting rod body, and described nylon jacket 105 is placed on described ceramic jacket 104.
Described ceramic jacket 104 and nylon jacket 105 are cylindric, and described nylon jacket 105 high temperature is cast on ceramic jacket 104, thus both is fixed.For enabling supporting positive cover rotate on righting rod body 101, the internal diameter of ceramic jacket 104 is set to the diameter being greater than righting rod body 101.The supporting positive cover two ends be made up of ceramic jacket 104 and nylon jacket 105 all offer the chamfering of 30 degree, and namely in cross section, the oblique line of chamfering and horizontal angle are 30 degree.This arrangement reduces the resistance of the fluid in oil pipe to supporting positive cover.
For strengthening the mechanical property of righting rod body 101 and spigot 103, righting rod body 101 and spigot 103 are structure as a whole.For realizing the installation and removal of supporting positive cover, axle journal 108 is provided with between described righting rod body 101 and described first socket 102, the diameter of described axle journal 108 is less than the internal diameter of described ceramic jacket 104, described axle journal 108 is provided with external screw thread, described axle journal 108 is bolted with nut 109, the circumscribed circle diameter of described nut 109 is less than the diameter of described ceramic jacket 104, and after nut 109 is tightened, the left side of nut 109 contacts with the right side of righting rod body 101.Described supporting positive cover is located between described spigot 103 and described nut 109, and spigot 103 and nut 109 collectively define the scope that supporting positive cover moves axially along righting rod body 101.
Described first socket 102 and spigot 103 are cylindrical, and the first socket 102 is provided with external screw thread.Spigot 103 offers blind hole, offers internal thread in described blind hole.
In the present embodiment, realize the detachable of supporting positive cover by the shaft shoulder 107 with coordinating of nut 109; Nut 109 and spigot 103 define the scope that supporting positive cover moves axially along righting rod body 101, avoid ceramic jacket 104 and collide with spigot 103.Nylon jacket 105 is located at outside ceramic jacket 104, while the integrality that ensure that ceramic jacket 104, increases the application life of whole device.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. an integrated sucker rod pottery column centralizer, it is characterized in that, comprise righting rod body, described righting rod body one end is provided with the first socket, and the other end is connected with spigot, and on described righting rod body, cover has supporting positive cover, described supporting positive cover comprises ceramic jacket and nylon jacket, the internal diameter that the external diameter of described spigot is greater than described ceramic jacket is less than the external diameter of described ceramic jacket, and described ceramic jacket is placed on described righting rod body, and described nylon jacket is placed on described ceramic jacket.
2. integrated sucker rod pottery column centralizer according to claim 1, it is characterized in that, described righting rod body is provided with the second socket away from one end of described first socket, described spigot and the second socket removably connect, the shaft shoulder is provided with between described righting rod body and described first socket, the internal diameter that the diameter of the described shaft shoulder is greater than described ceramic jacket is less than the external diameter of described ceramic jacket, and described supporting positive cover is located between described spigot and the described shaft shoulder.
3. integrated sucker rod pottery column centralizer according to claim 2, it is characterized in that, described second socket is provided with external screw thread, and described spigot is provided with the internal thread matched with described external screw thread.
4. integrated sucker rod pottery column centralizer according to claim 3, it is characterized in that, the lateral wall of described spigot is provided with two milling planes be parallel to each other.
5. integrated sucker rod pottery column centralizer according to claim 1, it is characterized in that, described righting rod body and described spigot are structure as a whole, axle journal is provided with between described righting rod body and described first socket, the diameter of described axle journal is less than the internal diameter of described ceramic jacket, described axle journal is provided with external screw thread, and described axle journal is bolted with nut, and described supporting positive cover is located between described spigot and described nut.
6. integrated sucker rod pottery column centralizer according to claim 5, it is characterized in that, described socket offers blind hole, offers internal thread in described blind hole.
7. the integrated sucker rod pottery column centralizer according to any one of claim 1-6, it is characterized in that, the internal diameter of described ceramic jacket is greater than the diameter of described righting rod body.
8. integrated sucker rod pottery column centralizer according to claim 7, it is characterized in that, described supporting positive cover two ends are equipped with 30 degree to 45 degree chamferings.
9. integrated sucker rod pottery column centralizer according to claim 8, it is characterized in that, the angle of described chamfering is 30 degree.
10. integrated sucker rod pottery column centralizer according to claim 9, it is characterized in that, described righting rod bulk material is 35CrMo alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520865983.5U CN205063851U (en) | 2015-11-02 | 2015-11-02 | Integral type sucker rod pottery column centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520865983.5U CN205063851U (en) | 2015-11-02 | 2015-11-02 | Integral type sucker rod pottery column centralizer |
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| Publication Number | Publication Date |
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| CN205063851U true CN205063851U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520865983.5U Active CN205063851U (en) | 2015-11-02 | 2015-11-02 | Integral type sucker rod pottery column centralizer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239934A (en) * | 2015-11-02 | 2016-01-13 | 许芳 | Integrated sucker rod ceramic columnar centralizer |
-
2015
- 2015-11-02 CN CN201520865983.5U patent/CN205063851U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239934A (en) * | 2015-11-02 | 2016-01-13 | 许芳 | Integrated sucker rod ceramic columnar centralizer |
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