CN217028850U

CN217028850U - Wellhead packing box of oil pumping unit

Info

Publication number: CN217028850U
Application number: CN202221030893.0U
Authority: CN
Inventors: 姜雯丽; 教传江
Original assignee: Daqing Haizhifeng Environmental Protection Technology Development Co ltd
Current assignee: Daqing Haizhifeng Environmental Protection Technology Development Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-07-22
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a wellhead packing box of an oil pumping unit, which comprises an installation base, wherein the outer surface of the installation base is connected with a gland in a sliding manner, and the outer surface of the gland is fixedly provided with a fixing lug. Through this design, at lubricated box, with inside lubricating oil passes through the liquid mouth of annotating on the lubricated box and pours into lubricated box, and under the effect of lubricating oil, so that lubricate the surface of polished rod and handle, and through the through-hole so that carry out the water conservancy diversion to lubricated liquid, make its top that flows into the gland, at the contact gap through polished rod and gland, the contact gap of polished rod and suppression filler flows in, on flowing into the packing rope, so that the packing rope absorbs it, after polished rod and packing rope contact, the wearing and tearing situation of packing rope and polished rod has been reduced, and then the life of polished rod has been improved, and under the effect of scraping the polished rod board, so that scrape the polished rod of contact, the burr on the polished rod has been avoided is to the problem that the packing rope accelerated wearing and tearing.

Description

Wellhead packing box of oil pumping unit

Technical Field

The utility model belongs to the technical field of packing boxes, and particularly relates to a wellhead packing box of an oil pumping unit.

Background

The packing box is a well mouth dynamic seal device for sealing the annular space between the oil pipe and the polish rod, adopts multi-stage sealing, and has good sealing effect and high pressure resistance. And packing, also known as seal packing, is usually woven from relatively soft threads, and strips, usually square or rectangular or circular in cross-section, are filled in the seal cavity.

Because the packing box is one of the key parts of the mechanical oil production well head, a packing is added between the packing box and the polish rod to play a role in sealing and prevent oil gas leakage. In the daily production process, because the incessant up-and-down motion of polished rod produces the friction with the packing, lead to packing loss speed aggravation, the wearing and tearing of beam-pumping unit well polished rod to the packing, lubricated bad wearing and tearing to the packing, the influence of high moisture to the packing, and then cause the part oil well frequently to trade packing and influenced the oil well production time rate, also caused the waste of manpower, material resources and resource simultaneously, consequently, provided a beam-pumping unit well head packing box and solved above-mentioned problem.

Disclosure of Invention

The utility model aims at overcoming the shortcomings of the prior art and providing the wellhead packing box of the pumping unit.

In order to solve the technical problems, the utility model provides the following technical scheme: a wellhead packing box of a pumping unit comprises an installation base, wherein a gland is connected to the outer surface of the installation base in a sliding manner, a fixing lug is fixedly arranged on the outer surface of the gland, an adjusting rod is fixedly arranged at the bottom of the fixing lug, a lower supporting cushion block is installed at the inner bottom of the installation base, a reset spring is arranged at the top of the lower supporting cushion block, an upper supporting cushion block is arranged at the top end of the reset spring, a packing rope is arranged at the top of the upper supporting cushion block, a pressing filler is arranged at the top of the packing rope, the top of the pressing filler is attached to the inner side of the gland, a polish rod is connected to the inside of the installation base in a sliding manner, a lubricating box is arranged at the top of the gland, a polish rod scraping plate is arranged inside the lubricating box, a through hole is formed in the polish rod scraping plate, a connecting plate is arranged on the outer surface of the lubricating box, and the gland is in threaded connection with the connecting plate through a fixing bolt, the mounting bracket is installed to the bottom of installation base, the inside sliding connection of mounting bracket has the regulation pole, and adjusts pole and fixed ear fixed connection, the lower part surface threaded connection who adjusts the pole has the thread bush, the surface of adjusting the pole is equipped with pressure spring.

As a preferable technical scheme of the utility model, the four mounting frames are arranged in an L shape and are distributed annularly.

As a preferable technical scheme of the utility model, the outer surface of the threaded sleeve is provided with anti-skid threads.

As a preferable technical solution of the present invention, one end of the pressure spring is disposed at the bottom of the mounting base, and the other end of the pressure spring is disposed at the inner side of the mounting bracket.

As a preferable technical scheme of the utility model, the number of the fixing lugs is four, and the fixing lugs are distributed annularly.

As a preferred technical scheme of the utility model, the top of the gland is provided with a positioning groove, the positioning groove is connected with the lubricating box in a clamping manner, and the top of the lubricating box is provided with a sealing plug.

As a preferred technical scheme of the utility model, the inner side of the polishing rod plate is attached to the polish rod, and the polishing rod plate is a double-faced concave wheel.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. through the design, lubricating oil is injected into the lubricating box through the upper liquid injection port of the lubricating box in the lubricating box, under the action of the lubricating oil, so that the outer surface of the polished rod is lubricated, the lubricating liquid is guided through the through hole and flows into the top of the gland, the lubricating liquid flows into the contact gap between the polished rod and the gland, and flows into the contact gap between the polished rod and the pressing filler on the packing rope so that the packing rope absorbs the lubricating liquid;

2. through this design, under reset spring's elastic deformation compensation, so that promote the packing rope, make packing rope and polished rod contact more inseparabler, and under pressure spring's elastic deformation effect, promote the compensation to the regulating stem, make the position of gland downstream more stable, and then improved the inside suppression of gland and packed the extrusion effect to the packing rope, thereby improved the contact compactness of packing rope and polished rod, and then improved the leakproofness of packing rope and polished rod.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic bottom perspective view of the present invention;

FIG. 3 is a cross-sectional front view of the structure of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure of FIG. 3 according to the present invention;

fig. 5 is an enlarged view of the structure at B of fig. 3 according to the present invention.

Wherein: 1. installing a base; 2. a mounting frame; 3. adjusting a rod; 4. a pressure spring; 5. a threaded sleeve; 6. a polish rod; 7. a gland; 8. fixing the ear; 9. a lubrication box; 10. a sealing plug; 11. a scraping rod plate; 12. a through hole; 13. positioning a groove; 14. a connecting plate; 15. fixing the bolt; 16. a lower support cushion block; 17. a return spring; 18. a packing rope; 19. pressing the filler; 20. and an upper support cushion block.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the implementation belong to the protection scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

The embodiment is as follows:

as shown in fig. 1-5, a wellhead packing box of a pumping unit comprises an installation base 1, a gland 7 is connected to the outer surface of the installation base 1 in a sliding manner, a fixing lug 8 is fixed to the outer surface of the gland 7, an adjusting rod 3 is fixed to the bottom of the fixing lug 8, a lower support cushion block 16 is installed at the inner bottom of the installation base 1, a return spring 17 is arranged at the top of the lower support cushion block 16, an upper support cushion block 20 is arranged at the top of the return spring 17, a packing rope 18 is arranged at the top of the upper support cushion block 20, a pressing packing 19 is arranged at the top of the packing rope 18, the top of the pressing packing 19 is attached to the inner side of the gland 7, a polish rod 6 is connected to the inner portion of the installation base 1 in a sliding manner, a lubrication box 9 is arranged at the top of the gland 7, a polish rod scraping plate 11 is arranged inside the lubrication box 9, a through hole 12 is formed inside the polish rod scraping plate 11, a connecting plate 14 is arranged on the outer surface of the lubrication box 9, gland 7 passes through fixing bolt 15 threaded connection with connecting plate 14, and mounting bracket 2 is installed to the bottom of installation base 1, and the inside sliding connection of mounting bracket 2 has regulation pole 3, and adjusts pole 3 and fixed ear 8 fixed connection, and the lower part surface threaded connection who adjusts pole 3 has thread bush 5, and the surface of adjusting pole 3 is equipped with pressure spring 4.

By arranging the lubricating box 9, lubricating oil is injected into the lubricating box 9 through a liquid injection port on the lubricating box 9, under the action of the lubricating oil, so as to lubricate the outer surface of the polished rod 6, and the lubricating oil is guided through the through hole 12 and flows into the top of the gland 7, through the contact gap between the polished rod 6 and the gland 7, the lubricating oil flows into the contact gap between the polished rod 6 and the pressing filler 19, and flows onto the packing rope 18, so that the packing rope 18 absorbs the lubricating oil, after the polished rod 6 is contacted with the packing rope 18, the abrasion conditions of the packing rope 18 and the polished rod 6 are reduced, the service life of the polished rod 6 is further prolonged, under the action of the scraping rod plate 11, the contacted polished rod 6 is conveniently scraped, the problem that burrs on the polished rod 6 abrade the packing rope 18 is avoided, and the adjusting rod 3 penetrates through the mounting base 1 and the mounting frame 2, at threaded connection through thread bush 5 and regulation pole 3, so that to 7 downstream of gland, thereby make 7 inside suppression packing 19 of gland extrude packing rope 18, thereby improved the stability of packing rope 18 at the inside use of installation base 1, and under reset spring 17's elastic deformation compensation, so as to promote packing rope 18, make packing rope 18 more inseparable with the polished rod 6 contact, and under pressure spring 4's elastic deformation effect, promote the compensation to regulating stem 3, make 7 downstream's position more stable, and then improved 7 inside suppression packing 19 of gland to the extrusion effect of packing rope 18, thereby the contact compactness of packing rope 18 with polished rod 6 has been improved.

In other embodiments, the mounting frames 2 are arranged in an "L" shape, four mounting frames 2 are arranged, and the mounting frames 2 are distributed annularly.

In other embodiments, the outer surface of the threaded sleeve 5 is provided with anti-slip threads; by arranging the anti-skid lines, the stability of the thread bushing 5 during rotation is improved,

in other embodiments, one end of the pressure spring 4 is disposed at the bottom of the mounting base 1, and the other end of the pressure spring 4 is disposed inside the mounting frame 2.

In other embodiments, there are four fixing lugs 8, and the fixing lugs 8 are distributed annularly; through the annular distribution to four fixed ears 8 to when adjusting rod 3 moves down to fixed ear 8, make the average atress of effort when gland 7 moves down, and then through the stability when gland 7 moves down.

In other embodiments, the top of the gland 7 is provided with a positioning groove 13, the positioning groove 13 is connected with the lubrication box 9 in a clamping manner, and the top of the lubrication box 9 is provided with a sealing plug 10; through setting up constant head tank 13 to carry out the location block to lubricated box 9, so that improved lubricated box 9 and polished rod 6's spacing support, take place the offset when having avoided polished rod 6 to use.

In other embodiments, the inner side of the polishing rod plate 11 is attached to the polish rod 6, and the polishing rod plate 11 is a double-sided concave wheel; through the setting to the polish rod plate 11 is scraped burr on the polished rod 6 and is moved, thereby guarantees the smoothness of polished rod 6, and then reduces polished rod 6 and packing rope 18's the situation of wearing and tearing.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, principal features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a beam-pumping unit well head packing box, includes installation base (1), its characterized in that: the outer surface of the mounting base (1) is connected with a gland (7) in a sliding mode, the outer surface of the gland (7) is fixedly provided with a fixing lug (8), the bottom of the fixing lug (8) is fixedly provided with an adjusting rod (3), the inner bottom of the mounting base (1) is provided with a lower supporting cushion block (16), the top of the lower supporting cushion block (16) is provided with a reset spring (17), the top end of the reset spring (17) is provided with an upper supporting cushion block (20), the top of the upper supporting cushion block (20) is provided with a packing rope (18), the top of the packing rope (18) is provided with a pressing packing (19), the top of the pressing packing (19) is attached to the inner side of the gland (7), the inner portion of the mounting base (1) is connected with a polished rod (6) in a sliding mode, the top of the gland (7) is provided with a lubricating box (9), the lubricating box (9) is internally provided with a polished rod scraping plate (11), scrape the inside of polish rod board (11) and seted up through-hole (12), the surface of lubrication box (9) is equipped with connecting plate (14), gland (7) pass through fixing bolt (15) threaded connection with connecting plate (14), mounting bracket (2) are installed to the bottom of installation base (1), the inside sliding connection of mounting bracket (2) has regulation pole (3), and adjusts pole (3) and fixed ear (8) fixed connection, the lower part surface threaded connection who adjusts pole (3) has thread bush (5), the surface of adjusting pole (3) is equipped with pressure spring (4).

2. The wellhead packing box of the pumping unit according to claim 1, characterized in that: the mounting rack (2) is arranged in an L shape, the number of the mounting racks (2) is four, and the mounting racks (2) are distributed annularly.

3. The wellhead packing box of the pumping unit according to claim 1, characterized in that: the outer surface of the threaded sleeve (5) is provided with anti-skid lines.

4. The wellhead packing box of the pumping unit according to claim 1, characterized in that: one end of the pressure spring (4) is arranged at the bottom of the mounting base (1), and the other end of the pressure spring (4) is arranged on the inner side of the mounting frame (2).

5. The wellhead packing box of the pumping unit according to claim 1, characterized in that: the number of the fixing lugs (8) is four, and the fixing lugs (8) are distributed annularly.

6. The wellhead packing box of the pumping unit according to claim 1, characterized in that: the top of gland (7) has been seted up constant head tank (13), and constant head tank (13) and lubricated box (9) block are connected, the top of lubricated box (9) is equipped with sealing plug (10).

7. The wellhead packing box of the pumping unit according to claim 1, characterized in that: the inner side of the polishing rod plate (11) is attached to the polishing rod (6), and the polishing rod plate (11) is a double-faced concave wheel.