CN201857920U

CN201857920U - Lubricating device for polish rod of beam-pumping unit

Info

Publication number: CN201857920U
Application number: CN2010205891368U
Authority: CN
Inventors: 任相财; 任永庆; 石岩; 徐翠萍; 贾凤艳; 张有兴; 孟丽君
Original assignee: Daqing Oilfield Co Ltd
Current assignee: Daqing Oilfield Co Ltd
Priority date: 2010-11-03
Filing date: 2010-11-03
Publication date: 2011-06-08
Anticipated expiration: 2020-11-03

Abstract

The utility model discloses a lubricating device for a polish rod of a beam-pumping unit. The lubricating device mainly comprises an inner shell and an outer shell, wherein beef tallow packing, oil immersing sponge, a gasket and rubber packing are successively added into a cavity of the inner shell from bottom to top, then the outer shell is fixed on a packing box, the oil immersing sponge in the device constantly oils the polish rod along with vertical reciprocating motion of the polish rod so as to lubricate the polish rod, accordingly friction between the polish rod and the packing is reduced, and simultaneously engine oil coated on the polish rod is just like a protecting membrane coated on the polish rod, thereby reducing corrosion of well liquid to the polish rod and prolonging service lives of the polish rod and the packing.

Description

Oil-extractor polish-rod oiling lubricating arrangement

Technical field

The utility model relates to a kind of protective device of oil pumper, and concrete is the device that polished rod is protected.

Background technology

At present, the oil field enters the high water-cut development stage, and the exploitation method majority of high-water-cut oil-producing well adopts annotates poly-exploitation, and the problem that the poly-exploitation of notes is brought is to the polished rod seriously corroded.A method of existing oil well protection polished rod is at well head packing box to be set; packing in the packing box plays lubricated polished rod on the one hand; play sealing on the other hand; but the oil content of packing is not enough to satisfy the lubricating requirement of polished rod; in addition for better sealing; the slit that is added between packing and polished rod is very little; the two continuous phase mutual friction; frictional heat, just unavoidable in the wearing and tearing that can not get polished rod under the prerequisite of good lubrication, and oil pumper is after operation a period of time; the sealing function of packing weakens; the well head place can run; emit; drip; the phenomenon of leaking, for fear of this phenomenon, well head adds the packing tension sometimes; the wearing and tearing of polished rod have been aggravated; increased the number of times of changing packing and changing bar, brought difficulty, increased personnel labor simultaneously to production management.

Summary of the invention

The application is to be solved to be at the problem that exists in the background technology, and a kind of device that can carry out good lubrication to polished rod is provided, thereby the friction of minimizing polished rod and packing and well liquid prolong the application life of polished rod and packing to the corrosion of polished rod.

In order to realize the foregoing invention purpose, the technical scheme that the application adopts is: oil-extractor polish-rod oiling lubricating arrangement, comprise inner casing, shell, butter packing, immersion oil sponge, pad, rubber packing, screw and handle, wherein inner casing is cylindric, on inner casing, be provided with the vertical gap that connects inner wall, the width of the vertical gap of inner casing is processed with in the inner housing and tops bar and lower convex platform greater than the diameter of polished rod, and inner wall is provided with upper screwed hole; Shell is that two-stage is cylindric up and down, on shell, be provided with the vertical gap that connects shell wall, the width of the vertical gap of shell is greater than the external diameter of polished rod, the last cylinder of shell is provided with loam cake, the internal diameter of last cylinder is greater than the external diameter of inner casing, the internal diameter of following cylinder is processed with horizontal socket greater than the packing box external diameter on cylindrical wall on the shell, screwed hole under cylindrical wall upper edge circumference is processed with down; Described inner casing passes polished rod by vertical gap and is sitting on the packing box, in the inner chamber that inner casing surrounded, add butter packing, filling immersion oil sponge from top to bottom successively, settle pad and rubber packing, wherein the butter packing is added on the lower convex platform of inner casing, on pad is positioned on and tops bar; Described shell is enclosed within outside the inner casing, and screw passes down screwed hole shell is fixed on the packing box, and the end of thread of handle passes horizontal socket respectively and upper screwed hole is fixed together inside and outside shell.

In order in use to observe the inside of oiling station, preferably be processed with observation port in the bottom of inner casing.

The beneficial effects of the utility model:

1, because the inside and outside shell of the application's oiling lubricating arrangement all is provided with vertical gap, and only need horizontal socket and hold-down screw on the use device device can be fixed on the packing box, so installation process need not unload, mounting method is simple, convenient;

When 2, the oil pumper normal operation of this oiling lubricating arrangement being installed, sucker rod pumps, and makes the constantly oiling on polished rod of immersion oil sponge in the device, has played the effect of lubricated polished rod, thereby has reduced the friction of polished rod and packing; Simultaneously, the machine oil that is coated on the polished rod also is equivalent to be coated with layer protecting film on polished rod, has reduced the corrosion of well liquid to polished rod, has prolonged the application life of polished rod and packing, has reached energy saving purposes, has also brought considerable economic simultaneously.

Description of drawings

Fig. 1: the application's device working state structure schematic diagram.

Fig. 2: the master of inner casing, vertical view.

Fig. 3: the master of shell, vertical view.

Among the above-mentioned figure: 1 – inner casing; 2 – shells; 3 – butter packings; 4 – sponges; 5 – pads; 6 – rubber packings; 7 – screws; 8 – handles; 9 – polished rods; 10 – packing boxs; 11 – top bar; 12 – lower convex platforms; The vertical gap of 13 – inner casings; 14 – upper screwed holes; 15 – observation ports; The vertical gap of 21 – shells; The horizontal socket of 22 –; Screwed hole under 23 –.

The specific embodiment

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

By shown in Figure 1, the application's oil-extractor polish-rod oiling lubricating arrangement, comprise inner casing 1, shell 2, butter packing 3, sponge 4, pad 5, rubber packing 6; Screw 7 and handle 8; As shown in Figure 2, the structure of described inner casing 1 is not closed cylindric, promptly on inner casing 1, be provided with the vertical gap 13 that runs through inner wall, distance between the vertical gap 13 of inner casing is greater than the diameter of polished rod 9, be processed with in the inner housing and top bar 11 and lower convex platform 12, inner wall is provided with upper screwed hole 14, the bottom of inner casing is processed with observation port 15, the effect of this observation port 15 is after lubricating arrangement is installed on the packing box 10, because the end of observation port 15 place's inner casings, is along height, so can from then on see the situation of lubricating arrangement inside; As shown in Figure 3, the structure of described shell 2 is the not closed cylinder of two-stage up and down, promptly on shell 2, be provided with the vertical gap 21 that runs through shell wall, distance between the vertical gap 21 of shell is greater than the external diameter of polished rod, the last cylinder of shell 2 is provided with loam cake, last barrel bore is greater than the external diameter of inner casing 1, following barrel bore is greater than packing box 10 external diameters, on cylindrical wall on the shell, be processed with horizontal socket 22, being uniformly distributed along the circumference on the following cylindrical wall of shell is provided with several down screwed holes 23, the setting of the application's device be three.

Before this lubricating arrangement did not come into operation, each building block of device need not link together, and when using, was installed to the polished rod outside again, and concrete mounting method is:

1, utilizes the vertical gap 13 of inner casing that inner casing 1 is enclosed within outside the polished rod 9, make inner casing 1 fall to being sitting on the packing box 10 then;

2, in the inner chamber of inner casing 1, at first add butter packing 3, attention butter packing 3 is added in inner casing 1 lower convex platform 12 above, then successively on butter packing 3 filling immersion oil sponge 4, the arrangement pad 5 above 11 of topping bar of inner casing 1, on pad 5 arrangement rubber packing 6;

3, utilize the vertical gap 21 of shell that shell 2 is enclosed within outside the polished rod 9, make shell 2 fall to being enclosed within inner casing 1 outside then and be sitting on the packing box 10, rotation case 2 can expose the upper screwed hole 14 of inner casing from the horizontal socket 22 of shell, the end of thread with handle 8 screws in the upper screwed hole 14 at last, and inside and outside shell is fixed together;

4, screw 7 is screwed in the following screwed hole 23 of shell, shell 2 is fixed on the packing box 10.

This device has been tested on 10 mouthfuls of rod-pumped wells between on July 12nd, 1 2010 on December 11st, 2009 and has been installed and used, and changes the packing behind a bite well operations, and all the other 9 mouthfuls of wells were not changed packing.Also can reduce downtime after using this device, estimate that this device can prolong 300 days application life of packing; Regularly replace sponge, add machine oil, better effects if.

The applicant has also calculated the economic benefit of using this oiling lubricating arrangement, and is specific as follows:

1, makes this and install 180 yuan in every cover, 20 yuan/year of oil change at regular intervals sponge palpuses;

2, use and change packing 12 times every year by every mouthful of well before this device, shut down 3 tons of/day calculating of individual well produce oil at every turn 15 minutes.(calculating) with 10 mouthfuls of wells:

The annual produce oil that influences: 3 ÷, 1440 * 12 * 15 * 10=3.75 ton;

Influence produce oil and be converted into RMB every year: 3.75 * 800=30000 unit;

3, use and change packing 12 times every year by every mouthful of well before this device, change 7,2 yuan/of packing prices at every turn:

The annual packing expense of using: 12 * 7 * 2.97 * 10=2494.8 unit;

4, year benefit: this device service life is 10 years, and 18 yuan of average year expenses are used this device year input (18+20) * 10=380 unit;

5, year saving: 2494.8+3.75 * 800-380=5114.8 unit.

Claims

1. oil-extractor polish-rod oiling lubricating arrangement, comprise inner casing (1), shell (2), butter packing (3), immersion oil sponge (4), pad (5), rubber packing (6), screw (7) and handle (8), it is characterized in that: described inner casing (1) is for cylindric, (1) is provided with the vertical gap (13) that connects inner wall on inner casing, vertically the width of gap (13) is greater than the diameter of polished rod (9), be processed with in the inner housing and top bar (11) and lower convex platform (12), inner wall is provided with upper screwed hole (14); Described shell (2) is that two-stage is cylindric up and down, on shell (2), be provided with the vertical gap (21) that connects shell wall, vertically the width of gap (21) is greater than the external diameter of polished rod (9), the last cylinder of shell (2) is provided with loam cake, the internal diameter of last cylinder is greater than the external diameter of inner casing (1), the internal diameter of following cylinder is processed with horizontal socket (22) greater than packing box (10) external diameter on cylindrical wall on the shell, screwed hole (23) under cylindrical wall upper edge circumference is processed with down; Described inner casing (1) passes polished rod (9) by vertical gap (13) and is sitting on the packing box (10), in the inner chamber that inner casing (1) is surrounded, add butter packing (3), filling immersion oil sponge (4) from top to bottom successively, settle pad (5) and rubber packing (6), wherein the butter packing is added on the lower convex platform (12) of inner casing, and pad is positioned on top bar (11); Described shell (2) is enclosed within outside the inner casing (1), screw (9) passes down screwed hole (23) shell (2) is fixed on the packing box (10), and the end of thread of handle (8) passes horizontal socket (22) on the shell respectively and the upper screwed hole (14) of inner casing (1) is fixed together inside and outside shell.

2. according to the described oil-extractor polish-rod oiling of claim 1 lubricating arrangement, it is characterized in that: the bottom of inner casing (1) is processed with observation port (15).