CN2937446Y

CN2937446Y - Spacing rotation centering wax scraper

Info

Publication number: CN2937446Y
Application number: CN 200620080350
Authority: CN
Inventors: 辛民昌; 张居国; 杨新房
Original assignee: JIUHUAN PETROLEUM MACHINERY CO Ltd SHANDONG
Current assignee: JIUHUAN PETROLEUM MACHINERY CO Ltd SHANDONG
Priority date: 2006-01-18
Filing date: 2006-01-18
Publication date: 2007-08-22
Anticipated expiration: 2016-01-18

Abstract

A spacing rotary righting paraffin scraping device pertains to the field of mechanical oil recovery equipment and comprising a righting restrictor, a rotary righting paraffin scraper and a restrictor, wherein internal walls of the righting paraffin restrictor and the restrictor have spacing recess, friction beads and directional saw teeth; the rotary righting paraffin scraper has a spiral channel, two ends of which are provided with directional saw teeth. The rotary righting paraffin scraper may rotate and slide flexibly between the righting restrictor and the restrictor, and, due to the existence of the spiral channel and under the effect of oil flow during the upper and lower motion of the sucker rod, may produce rotary shifts and rub uniformly against internal wall of the tubing, avoiding eccentric wear of the oil sucker rod and scraping paraffin on the tubing. Due to the effect of the righting restrictor and the restrictor, the rotary righting paraffin scraper slides and rotates freely in one section of the oil sucker rod, which realizes the objectives of avoiding eccentric wear and positioning accurately, stably and reliably and lengthens the useful lives of the tubing and the oil sucker rod.

Description

A kind of spacing rotatable wax scraping apparatus of setting upright

Affiliated technical field

A kind of spacing rotatable wax scraping apparatus of setting upright belongs to petroleum machinery oil production equipment field.

Background technology

The main at present method of using the mechanical movement lifting of oil exploitation rises to underground petroleum in the surface duct.As the ingredient sucker rod in the mechanical oil recovery equip ment system, be the intermediate member that ground power, forms of motion is passed to underground oil pump.In tubing pump oil production equipment system, sucker rod is done reciprocating, in the process of transmitting axial load, because sucker rod is the slender axles parts, when down stroke was moved, sucker rod bent easily, cause sucker rod and tube inner wall to rub, not being that sucker rod and box cupling mill is inclined to one side, is exactly that the oil pipe mill is leaked, and causes whole oil production equipment thrashing.

The at present common method that prevents that sucker rod partial wear, oil pipe mill from leaking is to twine the locator of epoxy resin and add to set upright with the locator that the Al-Pb alloy soldering is made to prevent that the eccentric wear device overcomes, this not only makes construction operation extremely inconvenient, and has increased more workload; Also because be subjected to the influence of subsurface temperature, it is moving that string very easily takes place locator, causes locate failure, and the nylon that is placed between the locator prevents that the eccentric wear device can not play the effect of the anti-eccentric wear of fixed point.

Summary of the invention

In order to solve the wear problem that the anti-eccentric wear of present sucker rod lost efficacy and thoroughly solved R a T, the purpose of this utility model provides a kind of accurate positioning, the solid and reliable spacing rotatable wax scraping apparatus of setting upright.

The purpose of this utility model is achieved in that the spacing rotatable wax scraping apparatus of setting upright is by setting upright stop, rotatable centering paraffin scraper and stop are formed, set upright stop, rotatable centering paraffin scraper and stop are two lobe clamping hoop type locking latch and form, set upright stop, stop has directional serrations, inner wall belt has limited impression, friction ribs, rotatable centering paraffin scraper has helical flow path, there is directional serrations at two ends, designing on the steady sucker rod body of rod of following closely of convex blocking type by setting upright stop during use, rotatable centering paraffin scraper and stop distribute in proper order, the steady nail of convex blocking type of the sucker rod body of rod is bumped into the limited impression of setting upright stop and stop respectively, because the cooperation of steady nail of convex blocking type and limited impression, contact with the tight of the sucker rod body of rod owing to friction ribs simultaneously, make and to set upright stop and stop is solid and reliable on the sucker rod body of rod, rotatable centering paraffin scraper is installed in to set upright between stop and the stop and also can rotates flexibly and slide, rotatable centering paraffin scraper is because of the existence of helical flow path, in sucker rod moves up and down the course of work, because the percussion of oil stream, the generation power that rotates in a circumferential direction, make rotatable centering paraffin scraper produce swing offset, rotatable centering paraffin scraper and tube inner wall evenly rub, both prevented sucker rod generation eccentric wear, played paraffin cutting effect again oil pipe.Because the spacing rotatable existence that has all designed the directional serrations that is meshing with each other on the wax scraping apparatus of setting upright makes rotatable centering paraffin scraper wearing and tearing evenly, prolonged the application life of rotatable centering paraffin scraper simultaneously.Set upright stop and both played rotatable centering paraffin scraper fixed point spacingly, play again sucker rod is set upright anti-eccentric wear effect, stop plays rotatable centering paraffin scraper fixed point position-limiting action.Because set upright the effect of stop and stop, rotatable centering paraffin scraper is free to slide, rotates in a segment distance of sucker rod, play anti-eccentric wear accurate positioning, solid and reliable purpose, prolonged the application life of oil pipe and sucker rod.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is the structure diagram of first embodiment of the utility model.

Fig. 2 is the structure diagram of second embodiment of the utility model.

Fig. 3 sets upright the structure diagram of stop I for the utility model.

Fig. 4 sets upright the structure diagram of stop II for the utility model.

Fig. 5 is the A-A sectional drawing among Fig. 3.

Fig. 6 is the B-B sectional drawing among Fig. 4.

Fig. 7 is the structure diagram of the utility model stop I.

Fig. 8 is the structure diagram of the utility model stop II.

Fig. 9 is the C-C sectional drawing among Fig. 7.

Figure 10 is the D-D sectional drawing among Fig. 8.

Among the figure 1, set upright stop, 2, directional serrations, 3, rotatable centering paraffin scraper, 4, helical flow path 5, stop, 6, sucker rod convex blocking type is surely followed closely, 7, sucker rod, 8, set upright stop I, 9, limited impression, 10, friction ribs, 11, set upright stop II, 12, stop I, 13, stop II.

The specific embodiment

The purpose of this utility model can reach in the following manner:

Fig. 1 is first embodiment of the utility model:

Set upright stop I (8) and set upright stop II (11) locking and form and set upright stop (1); Stop I (12) forms stop (5) with stop II (13) locking; Rotatable centering paraffin scraper (3) is contained in to set upright and just has been combined into the spacing rotatable wax scraping apparatus of setting upright between stop (1) and the stop (5).Fig. 1 has installed one group of spacing rotatable wax scraping apparatus of setting upright.

Fig. 2 is second embodiment of the utility model:

Above one group of spacing rotatable wax scraping apparatus of setting upright: set upright stop I (8) and set upright stop II (11) locking and form and set upright stop (1); Stop I (12) forms stop (5) with stop II (13) locking; Rotatable centering paraffin scraper (3) is contained in to set upright and just has been combined into the spacing rotatable wax scraping apparatus of setting upright between stop (1) and the stop (5).Below the one group of spacing rotatable wax scraping apparatus of setting upright: stop I (12) form stop (5) with stop II (13) locking; Rotatable centering paraffin scraper (3) is contained in and just has been combined into the spacing rotatable wax scraping apparatus of setting upright between two groups of stops (5).Fig. 2 has installed two groups of spacing rotatable wax scraping apparatus of setting upright, below one group of rotatable centering paraffin scraper (3) be installed between stop (5) and the stop (5).

Generally have two groups of spacing rotatable wax scraping apparatus of setting upright on the sucker rod, wherein one group is installed in the middle of the sucker rod, and another group is installed on sucker rod and is not with coupling end.Also can carry out many groups or single-piece installs.Rotatable centering paraffin scraper (3) is a cylindrical form, and the external diameter of rotatable centering paraffin scraper (3) and the internal diameter gap of oil pipe are

Claims

1, a kind of spacing rotatable wax scraping apparatus of setting upright, form by setting upright stop (1), rotatable centering paraffin scraper (3) and stop (5), on the sucker rod body of rod, distribute by setting upright stop (1), rotatable centering paraffin scraper (3) and stop (5) order, it is characterized in that: setting upright stop (1) has limited impression (9), friction ribs (10) and directional serrations (2) with stop (5) inner wall belt, rotatable centering paraffin scraper (3) has helical flow path (4), and there is directional serrations (2) at two ends.

2, a kind of spacing rotatable wax scraping apparatus of setting upright according to claim 1, its feature also is: the described stop (1), stop (5) set upright is two lobe forms with rotatable centering paraffin scraper (3), the locking of closing of two lobes.

3, a kind of spacing rotatable wax scraping apparatus of setting upright according to claim 1, its feature also is: described rotatable centering paraffin scraper (3) is a cylindrical form, it is installed in sets upright between stop (1) and the stop (5) or between stop (5) and the stop (5), be free to slide rotation, the external diameter of rotatable centering paraffin scraper (3) and the internal diameter gap of oil pipe are 1～15mm.