CN2623908Y - High strength ring sealed tube pattern oil well pump - Google Patents

Abstract

The utility model relates to a high strength loop seal tube oil pump, belonging to the under well oilfield oil extraction mechanism field, which comprises an oil pipe, a plunger, a seal sleeve, a traveling valve, a sucker rod, an anti settle sand barrel and a bottom valve, and is characterized in that the periphery of the long cylinder plunger arranged at the oil pump center is provided with a seal sleeve component whose periphery is provided with a seal sleeve outer pipe and the bottom connects to a buffer sand sink barrel with a bottom provided with a sand sink cap and the bottom valve component. The top of the seal sleeve component connects with the oil pipe by use of a connecting bracket, whose center is the provided with the sucker rod. The oil pump not only has perfect sealing performance, but has reasonable seal sleeve component design, which eliminates the pump hole blocking phenomena of plunger, thereby remarkably improving the success rate of the pumping, and thus improving the pump efficiency.

Description

High strength ring seal tubing pump

Technical field

The utility model belongs to oil recovery machiner field, oil field, down-hole, specially refers to a kind of high strength tubular type oil well pump that is used for oil field deep well.

Background technique

In order to extract fluid from the down-hole oil reservoir, the oil well pump special tool that is absolutely necessary, divide according to related domain industry standard, be divided into tubing pump and rod-type pumping unit, connect the structure person who goes into the well by oil pipe for the oil pumping pump barrel, be called tubing pump, the oil pumping pump barrel is connected the structure person who goes into the well by sucker rod, be called rod-type pumping unit, for these traditional oil well pumps, because its seal form majority belongs to the area gap sealing, poorly sealed, more wastage is arranged, the efficient of pump is lower, simultaneously, the bending of sucker rod in the oil pump, distortion, it also is the factor that reduces pump efficiency that stroke is obstructed, in order to improve and to improve pump efficiency, this development people has been engaged in the improvement and the research of several generations product, not long ago ring-like tubing pump of having declared of patent 01226804.6 piston (authorizing) and patent 01226808.9 piston rod type oil well pump (authorizing) all are the efficient of being devoted to improve oil well pump, prevent silt infringement and from the angle of environmental protection, overcome problem of environment pollution caused, make improved oil well pump have more superiority, still, the improvement that technology is not always being stopped, improve with perfect, examine the test of these pumps closely, success rate when finding pump down is not high, and piston ring is coming off in the pump process down easily, and the test life of piston is short, yielding or damage, cause at the pump tube port position and be obstructed, thereby more quickened coming off of ring, damage, therefore, need on the matching relationship of the structure of piston ring and it and pump, be corrected, make design more become perfect.

Summary of the invention

The utility model technical issues that need to address, be in the existing pump structure, piston ring is fragile during following pump, come off, and anti-sand setting effect is still waiting many deficiencys such as improvement, and redesign a kind of high strength ring seal tubing pump, the purpose of this utility model, realize by the following technical solutions, a kind of high strength ring seal tubing pump, comprise oil pipe, plunger, stuffing box gland, traveling valve, sucker rod, anti-sand-precipitating tube and bottom valve is characterized in that, place outside the oval tubular plunger of oil well pump center position to enclose, be provided with seal cartridge assembly, this assembly periphery is the stuffing box gland outer tube, is connected to the buffering sand-precipitating tube under it, and this bottom is for being provided with anti-sand-precipitating tube and bottom valve assembly, seal cartridge assembly top is connecting oil pipe by box cupling, and its center is a sucker rod.Described oval tubular plunger, length can be 6-8 rice, and it respectively is provided with the upper and lower valve that moves about in two ends up and down; Described seal cartridge assembly, it is made up of three parts, is respectively last soft or hard ring seat and ring, following soft or hard ring seat and ring, middle part ring seat spacer, and wherein each soft or hard ring all is that two semi-rings involute, the waist of ring is a circle groove, and groove is embedded with the spring band collar of an opening.Soft or hard ring seat bottom is provided with the O type circle of anti-fluid seepage.Described hard ring is to adopt the high-strength rigid metallic material to make; Soft ring material is to adopt macromolecular material littler than metal hardness, that wear-resisting property is good to make.The beneficial effects of the utility model are, this oil well pump is favorable sealing property not only, and the appropriate design of seal cartridge assembly, have eliminated plunger in the pumping hole phenomenon of being obstructed, and have significantly improved the success rate of time pump, thereby have improved pump efficiency.

Description of drawings

Fig. 1 is this high strength ring seal tubing pump overall construction drawing

Fig. 2 is the stuffing box gland structural drawing

Fig. 3 a-3b is the sectional view and the schematic perspective view of soft or hard ring in the stuffing box gland.

Embodiment

With reference to Fig. 1, represent this high strength ring seal tubing pump overall construction drawing, among the figure, the oval tubular plunger of pump center position is 1, its periphery is provided with seal cartridge assembly 2, this assembly includes following hard ring seat and encircles 2.1, descend soft ring seat and encircle 2.2, the middle part is a ring seat spacer 2.3, upwards be hard ring seat 2.5 on the last soft ring seat 2.4 successively, soft or hard ring seat bottom also is provided with O type circle 2.6, be embedded with split ring banding circle 2.7 in the waist groove of ring, this assembly periphery is a stuffing box gland outer tube 3, its lower end is connecting buffering sand-precipitating tube 9 by box cupling, be provided with anti-sand setting cap 10 and bottom valve assembly 11 below this tube, this assembly includes bottom valve 11.1 again, bottom valve joint 11.2 and tail pipe 11.3, the upper end of stuffing box gland outer tube 3 is connecting oil pipe 6 by box cupling 4, and the oil pipe central position is a sucker rod 7, wander up and down valve 5 and 8 place respectively the tubular long-plunger on, lower end mouth, represent the stuffing box gland structure with reference to Fig. 2, wherein O type circle 2.6 places hard ring seat and soft ring seat bottom, is 8-10 of same size, and it can prevent in the oil pipe liquid down-hole of bleeding, with reference to Fig. 3 a, 3b represents the sectional view and the stereogram of soft or hard ring in the stuffing box gland, and split ring banding circle 2.7 is embedded in the soft or hard ring waist groove as can be known.Encircle firmly described in this example, can adopt Composite Steel to make, described soft ring can adopt the poly-tetrafluoro family macromolecule material of sintering to make.

Claims (4)

1, a kind of high strength ring seal tubing pump, comprise oil pipe, plunger, stuffing box gland, traveling valve, sucker rod, anti-sand setting cap and bottom valve, it is characterized in that, place outside the oval tubular plunger of oil well pump center position and enclose, be provided with seal cartridge assembly, this assembly periphery is the stuffing box gland outer tube, be connected to the buffering sand-precipitating tube under it, this bottom is for being provided with anti-sand setting cap and bottom valve assembly, and seal cartridge assembly top is connecting oil pipe by box cupling, and its center is a sucker rod.

2, a kind of high strength ring seal tubing pump according to claim 1 is characterized in that, described oval tubular plunger, and length can be 6-8 rice.

3, a kind of high strength ring seal tubing pump according to claim 1, it is characterized in that, described seal cartridge assembly, it is made up of three parts, be respectively last soft or hard ring seat and ring, following soft or hard ring seat and ring, middle part ring seat spacer, wherein each soft or hard ring all is that two semi-rings involute, and the waist of ring is a circle groove, and groove is embedded with the spring band collar of an opening.

4, a kind of high strength ring seal tubing pump according to claim 1 is characterized in that, described hard ring is to adopt the high-strength rigid metallic material to make; Soft ring material is to adopt macromolecular material littler than metal hardness, that wear-resisting property is good to make.

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