CN202152644U - Special sucker rod connecting device for screw pump - Google Patents
Special sucker rod connecting device for screw pump Download PDFInfo
- Publication number
- CN202152644U CN202152644U CN 201120062455 CN201120062455U CN202152644U CN 202152644 U CN202152644 U CN 202152644U CN 201120062455 CN201120062455 CN 201120062455 CN 201120062455 U CN201120062455 U CN 201120062455U CN 202152644 U CN202152644 U CN 202152644U
- Authority
- CN
- China
- Prior art keywords
- screw pump
- box coupling
- connecting device
- wedge
- rod connecting
- 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
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Abstract
The utility model discloses a special sucker rod connecting device for a screw pump. To overcome the defects of high occurring rate of break-off accidents, non-detachable box coupling and short service life of the traditional sucker rod for the screw pump, the special sucker rod connecting device for the screw pump disclosed by the utility model comprises an upper joint, a lower joint and a box coupling; a wedge-shaped slot is arranged at the lower end of the upper joint; the upper end of the lower joint is of a wedge-shaped structure matched with the wedge-shaped slot of the upper joint; the box coupling is located at the connection of the upper joint and the lower joint; an inner hole of the box coupling is a stepped hole with big top and small bottom; the stepped hole is transited via a tapered bore; a gasket and a retainer ring are fixedly arranged under the wedge-shaped structure at the upper end of the lower joint and located in the big hole at the upper end of the box coupling; a cone at the lower end of the retainer ring is matched with the tapered bore for transition in the box coupling; a seam allowance is arranged at the upper end of the inner hole of the box coupling; and the upper joint is fixedly connected with the box coupling by screw threads under the seam allowance. The special sucker rod connecting device for the screw pump has the beneficial effects of having a simple structure, improving the working reliability and the normal working hour of oil wells, reducing abnormal workover operations, and improving the mining efficiency of oil wells.
Description
Technical field
The utility model relates to a kind of linkage of sucker rod, especially relates to the special-purpose pumping rod connecting device of a kind of screw pump.
Background technology
Screw pump oil production system not only has good compliance to common oil well, and the exploitation that high viscosity, height is contained special hole condition oil wells such as sand, big oil-gas ratio also has compliance preferably.Screw pump oil production has the pump efficiency height, and advantages such as stability of flow, contain the exploitation of hole condition oil wells such as sand, gassiness at suitable viscous crude; Compare with oil pumper, have characteristics such as infusion of financial resources is low, operation convenient, management maintenance is simple, floor space is little, progressively formed seriation, standardization, various informative, alternative strong.
At present; Along with the continuous development of screw pump, the consumption of the special-purpose sucker rod of screw pump constantly increases, and the problem in the use also displays gradually; Constantly soaring like the break-off accident incidence, disconnected main cause of taking off is that joint design causes screw thread place beat to cause connecting thread to lose efficacy; Box cupling is on-dismountable, and the useful working life of the special-purpose sucker rod of screw pump is shortened, and has influenced the productivity effect with oil well of promoting the use of of screw pump.
The utility model content
In order to overcome the deficiency that the special-purpose rod parting accident rate of existing screw pump is high, box cupling is on-dismountable, application life is low, the utility model provides a kind of screw pump special-purpose pumping rod connecting device.
The utility model solves the technical scheme that its technical problem adopted: the special-purpose pumping rod connecting device of screw pump; Comprise top connection, lower contact, box cupling; There is wedge-shaped slot the lower end of top connection; The lower contact upper end is the wedge shape that matches with the top connection wedge-shaped slot, and top connection and lower contact are chimeric each other, and box cupling is positioned at the junction of top connection and lower contact.The box cupling endoporus is up big and down small shoulder hole, passes through the taper hole transition between the shoulder hole; The wedge shape below of lower contact upper end is installed with back-up ring, and lock washer is fixedly mounted on the back-up ring upper end, and the transition taper hole in the cone of back-up ring lower end and the box cupling matches; Box cupling endoporus upper end is a seam, and top connection is fixedly connected with box cupling through the screw thread of seam below.Lower contact is fixedly connected through screw thread with packing ring, back-up ring; The material of packing ring is a nylon.
The beneficial effect of the utility model is that simple in structure, job execution is identical with the mode of conventional oil well operation, has reduced improper workover treatment the normal working hours of having improved functional reliability and oil well, has improved the oil mining benefit.
Description of drawings
Fig. 1 is the structural representation of the special-purpose pumping rod connecting device of the utility model screw pump.
Among the figure: 1. top connection, 2. box cupling, 3. packing ring, 4. back-up ring, 5. lower contact.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.But what those skilled in the art should know is to the invention is not restricted to the listed specific embodiment, as long as spirit according to the invention all should be included in protection scope of the present invention.
The special-purpose pumping rod connecting device of the utility model screw pump; Comprise top connection 1, lower contact 5, box cupling 2; There is wedge-shaped slot the lower end of top connection 1; Lower contact 5 upper ends are the wedge shapes that match with the top connection wedge-shaped slot, and the upper end of the lower end of top connection 1 and lower contact 5 is chimeric each other, and box cupling 2 is positioned at the junction of top connection 1 and lower contact 5.Box cupling 2 endoporus are up big and down small shoulder hole, pass through the taper hole transition between the shoulder hole; The wedge shape below of lower contact 5 upper ends is installed with back-up ring 4, and lock washer 3 is fixedly mounted on the upper end of back-up ring 4, and packing ring 3, back-up ring 4 adopt screw thread to be fixedly connected with lower contact 5 usually, and the material of packing ring 3 is a nylon.The upper end that is fixedly connected with the lower contact 5 of packing ring 3 and back-up ring 4 is positioned at the macropore of box cupling 2 upper ends, and the transition taper hole in the cone of back-up ring 4 lower ends and the box cupling 2 matches.Box cupling 2 endoporus upper end is a seam, and top connection 1 is fixedly connected with box cupling 2 through the screw thread of seam below.
The special-purpose pumping rod connecting device of the utility model screw pump; Above the connecting thread of top connection 1 and box cupling 2; Through increasing box cupling 2 upper end seam length, make box cupling 2 seams and cylindrical step place contact length increase, reduce because the top connection 1 that beat causes is rocked with box cupling 2 relatively; Make the stress coefficient of screw thread tail end reduce, thereby avoid the fatigue failure phenomenon that occurs here.The back-up ring 4 of special construction is tightened in the lower contact 5, utilizes the lock washer 3 of nylon that back-up ring 4 is fixed in the lower contact 5 simultaneously, and play locking effect, make that box cupling 2 is detachable, be convenient to dismounting, reduce production costs and manufacturing cost.
The utility model is realized the detachable of linkage through the special-purpose pumping rod connecting device of optimal design screw pump, strengthens anticreep, strip, adhesion ability.
It should be noted that the foregoing description is example and unrestricted the present invention, those skilled in the art can design a lot of alternate embodiments and not break away from the claim scope of this patent.
Claims (3)
1. the special-purpose pumping rod connecting device of a screw pump; Comprise top connection, lower contact, box cupling; There is wedge-shaped slot the lower end of top connection, and the lower contact upper end is the wedge shape that matches with the top connection wedge-shaped slot, and top connection and lower contact are chimeric each other; Box cupling is positioned at the junction of top connection and lower contact, it is characterized in that:
Said box cupling (2) endoporus is up big and down small shoulder hole, passes through the taper hole transition between the shoulder hole;
The wedge shape below of said lower contact (5) upper end is installed with back-up ring (4), and lock washer (3) is fixedly mounted on the upper end of back-up ring (4), and the transition taper hole in the cone of back-up ring (4) lower end and the box cupling (2) matches;
Said box cupling (2) endoporus upper end is a seam, and top connection (1) is fixedly connected with box cupling (2) through the screw thread of seam below.
2. according to the special-purpose pumping rod connecting device of the said screw pump of claim 1, it is characterized in that: said lower contact (5) is fixedly connected through screw thread with packing ring (3), back-up ring (4).
3. according to the special-purpose pumping rod connecting device of the said screw pump of claim 2, it is characterized in that: the material of said packing ring (3) is a nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120062455 CN202152644U (en) | 2011-03-10 | 2011-03-10 | Special sucker rod connecting device for screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120062455 CN202152644U (en) | 2011-03-10 | 2011-03-10 | Special sucker rod connecting device for screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202152644U true CN202152644U (en) | 2012-02-29 |
Family
ID=45693144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120062455 Expired - Lifetime CN202152644U (en) | 2011-03-10 | 2011-03-10 | Special sucker rod connecting device for screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202152644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179853A (en) * | 2015-09-18 | 2015-12-23 | 缙云县工拓机械设备有限公司 | Leakproof connector connecting locking device for municipal administration afforesting water supply flexible pipe |
-
2011
- 2011-03-10 CN CN 201120062455 patent/CN202152644U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179853A (en) * | 2015-09-18 | 2015-12-23 | 缙云县工拓机械设备有限公司 | Leakproof connector connecting locking device for municipal administration afforesting water supply flexible pipe |
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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: 20120229 |