CN114109276A

CN114109276A - Sucker rod rotary clamping centralizer for underground

Info

Publication number: CN114109276A
Application number: CN202111440156.8A
Authority: CN
Inventors: 孙绍武
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-03-01

Abstract

The invention relates to the technical field of building decoration plates and discloses a rotary clamping centralizer for an underground sucker rod, wherein a first centralizer clamping sleeve is clamped on the left side of a sucker rod body, a second centralizer clamping sleeve is clamped on the right side of the sucker rod body, ratchet grooves are longitudinally formed in the middle positions of the tops of the first centralizer clamping sleeve and the second centralizer clamping sleeve, a clamping sleeve is screwed on the upper portion of the sucker rod body, inserting rods are longitudinally and fixedly connected to two sides of the bottom of the clamping sleeve and inserted into the ratchet grooves, and clamping teeth are movably connected to two sides of the bottom of the inserting rods through rotating shafts. This sucker rod that uses in pit revolves card centralizer is through pegging graft the inserted bar in the inside of ratchet groove, and owing to add the latch of establishing, can carry on spacingly to the inserted bar to with first centralizer cutting ferrule and second centralizer cutting ferrule outside the sucker rod hold tightly, simplified the installation procedure of centralizer, promoted the installation rate of centralizer.

Description

Sucker rod rotary clamping centralizer for underground

Technical Field

The invention relates to the technical field of sucker rod centralizers, in particular to a sucker rod rotary clamping centralizer for underground use.

Background

The sucker rod centralizer is the downhole tool who prevents the eccentric wear of oil pumping well, when the sucker rod moved about in oil pipe inside, because the elastic deformation of sucker rod makes the sucker rod and the inner wall of oil pipe take place the friction easily, long this sucker rod was easy to split in the past, and sucker rod centralizer can reduce the friction of sucker rod and oil pipe, strengthens the oil recovery life-span of beam-pumping unit.

The common sucker rod centralizer is usually installed outside a sucker rod in a mode of screwing or clamping by threads, and in practical application, when the sucker rod is used for pumping oil, the sucker rod centralizer can be driven to move in a pipeline, and in the moving process, the outer surface of the sucker rod centralizer can collide with the inner wall of the pipeline, the threaded connection part of the sucker rod centralizer and the sucker rod can be loosened or abraded, the sucker rod centralizer and the sucker rod can be separated, the clamping hoop type centralizer needs manual pre-tightening when being installed so as to avoid the looseness of the centralizer on the sucker rod, the centralizer is tightly held on the sucker rod, the process of installing a fastener is time-consuming and labor-consuming, common centralizers are pure cylindrical sleeve structures, the centralizer can not effectively remove wax after facing long-time use between the sucker rod and an oil pipe, and further influences the service life of oil pumping equipment, the oil rod rotary clamping centralizer for the well cannot meet the working requirements of the oil rod centralizer, and therefore the oil rod rotary clamping centralizer for the well is provided.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a sucker rod rotary clamping centralizer for underground use, which aims to solve the technical problems.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: an oil rod rotary clamping centralizer for underground use comprises a sucker rod body, wherein a first centralizer clamping sleeve is clamped at the left side of the sucker rod body, a second centralizer clamping sleeve is clamped at the right side of the sucker rod body, ratchet grooves are longitudinally formed in the middle positions of the tops of the first centralizer clamping sleeve and the second centralizer clamping sleeve, a clamping sleeve is screwed at the upper part of the sucker rod body, inserting rods are longitudinally and fixedly connected to the two sides of the bottom of the clamping sleeve and are inserted into the ratchet grooves, clamping teeth are movably connected to the two sides of the bottom of the inserting rods through rotating shafts and are clamped between the ratchet grooves, clamping grooves are formed in the two sides of the bottom of the clamping sleeve, compression springs are fixedly connected to the bottoms of the clamping grooves, sealing clamping sleeves are fixedly connected to the bottoms of the compression springs, transmission boxes are fixedly mounted in the middles of the sides, far away from the sucker rod body, of the first centralizer and the second centralizer, the utility model discloses a sucker rod, including transmission case, transmission rod body, first awl tooth, second awl tooth, the equal horizontal fixedly connected with fixed plate in upper portion that sucker rod body one end was kept away from to the transmission case, the bottom of fixed plate all is connected with the gyro wheel through the pivot, the equal coaxial coupling in bottom of gyro wheel has first awl tooth, one side that first awl tooth is close to the transmission case all meshes there is the second awl tooth, the equal coaxial coupling in one side of second awl tooth towards the transmission case has the transfer line, the transfer line all transversely runs through the inner chamber middle part of transmission case, and the other end of transfer line all corresponds lateral wall swing joint through the inner chamber of ball bearing with the transmission case.

Preferably, the bottom of the first centralizer cutting sleeve and the bottom of the second centralizer cutting sleeve are fixedly connected with mounting plates, the upper portion and the lower portion of one side of the mounting plate, facing the sucker rod body, are fixedly connected with telescopic springs in a transverse mode, and the other ends of the telescopic springs are fixedly connected with rubber pads.

Preferably, the upper portion and the lower portion of the left side of the second centralizer clamping sleeve are both provided with limiting slots, the right side of the first centralizer clamping sleeve and the positions corresponding to the limiting slots are both fixedly connected with limiting insertion rods, and flexible pads are sleeved on the outer portions of the rod bodies of the limiting insertion rods.

Preferably, the right side of the rod body of the transmission rod inside the transmission box is coaxially connected with a cam, connecting rods are inserted in the top and the bottom of the transmission box corresponding to the cam, a top plate is installed at one end, facing the transmission rod, of each connecting rod, and a damping spring is sleeved on the outer side of the rod body of each connecting rod inside the transmission box.

Preferably, the one end that the connecting rod is located the transmission case outside all is connected with the scraper blade, all weld the boss between scraper blade and the left junction of connecting rod.

Preferably, the left end of scraper blade all sets up to the arc, and the left part of scraper blade has all been installed dull polish arch.

(III) advantageous effects

Compared with the prior art, the invention provides an oil rod rotary clamping centralizer for underground use, which has the following beneficial effects:

1. according to the underground sucker rod rotary clamping centralizer, the inserted rod can be inserted into the ratchet groove through the additionally arranged clamping cylinder, the inserted rod can be limited due to the additionally arranged clamping teeth, so that the first centralizer clamping sleeve and the second centralizer clamping sleeve are clamped outside a sucker rod tightly, the installation steps of the centralizer are simplified, the installation speed of the centralizer is increased, the compression spring additionally arranged inside the clamping groove can enable the sealing base plate to be always pressed on the tops of the first centralizer clamping sleeve and the second centralizer clamping sleeve, the sealing performance between the sucker rod and the centralizer is improved, oil stains are prevented from entering between the sucker rod and the centralizer, and the problem that the centralizer is prone to falling off is avoided;

2. this sucker rod rotary clamping centralizer of usefulness in pit through adding the gyro wheel of establishing for can carry out the up-and-down motion in sucker rod work, drive the gyro wheel and roll, thereby drive the rotation of second awl tooth and transfer line through first awl tooth, and then drive the rotation of cam, make its reciprocal promotion roof extrusion damping spring, make and drive the scraper blade through the connecting rod and carry out on a large scale scraping and rubbing to the inner wall of oil pipe, prevented the phenomenon of the wax deposition that causes because of long-time the use between sucker rod and the oil pipe, promoted the life of pumping equipment.

Drawings

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

FIG. 2 is a schematic view of a connection structure of a first centralizer ferrule and a second centralizer ferrule of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

fig. 4 is a schematic view of the internal structure of the transmission case of the present invention.

In the figure: 1. a sucker rod body; 2. a first centralizer ferrule; 21. a limiting inserted rod; 211. a flexible pad; 3. a second centralizer ferrule; 31. limiting slots; 4. a ratchet groove; 5. installing a jacket; 51. inserting a rod; 511. clamping teeth; 52. clamping grooves; 53. a compression spring; 54. sealing the base plate; 6. a transmission case; 7. a fixing plate; 8. a roller; 9. a first bevel gear; 10. a second taper tooth; 11. a transmission rod; 12. mounting a plate; 13. a tension spring; 131. a rubber pad; 14. a cam; 15. a connecting rod; 16. a top plate; 17. a damping spring; 18. a scraper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a technical scheme, in particular to a rotary clamping centralizer for an underground sucker rod, which comprises a sucker rod body 1, a first centralizer clamping sleeve 2, a limiting inserted rod 21, a flexible pad 211, a second centralizer clamping sleeve 3, a limiting slot 31, a ratchet groove 4, a clamping sleeve 5, an inserted rod 51, a clamping tooth 511, a clamping groove 52, a compression spring 53, a sealing cushion plate 54, a transmission case 6, a fixing plate 7, a roller 8, a first bevel gear 9, a second bevel gear 10, a transmission rod 11, a mounting plate 12, a telescopic spring 13, a rubber pad 131, a cam 14, a connecting rod 15, a top plate 16, a damping spring 17 and a scraper 18, wherein referring to the sucker rod body 1, the first centralizer clamping sleeve 2 is clamped on the left side of the sucker rod body 1, the second centralizer clamping sleeve 3 is clamped on the right side of the sucker rod body 1, the bottoms of the first centralizer clamping sleeve 2 and the second centralizer clamping sleeve 3 are fixedly connected with the mounting plate 12, the upper portion and the lower portion of the mounting plate 12, which face one side of the sucker rod body 1, are transversely and are fixedly connected with the telescopic spring 13, referring to fig. 2, rubber pads 131 are fixedly connected to the other ends of the extension springs 13, limit slots 31 are respectively formed in the upper portion and the lower portion of the left side of the second centralizer clamping sleeve 3, limit inserting rods 21 are fixedly connected to the right side of the first centralizer clamping sleeve 2 corresponding to the limit slots 31, flexible pads 211 are respectively sleeved on the outer portions of the rods of the limit inserting rods 21, so that the first centralizer clamping sleeve 2 and the second centralizer clamping sleeve 3 are more tightly inserted, ratchet grooves 4 are respectively longitudinally formed in the middle positions of the tops of the first centralizer clamping sleeve 2 and the second centralizer clamping sleeve 3, a clamping sleeve 5 is screwed on the upper portion of the sucker rod body 1 through threads, inserting rods 51 are fixedly connected to two sides of the bottom of the clamping sleeve 5 longitudinally, the inserting rods 51 are inserted into the ratchet grooves 4, clamping teeth 511 are movably connected to two sides of the bottom of the inserting rods 51 through rotating shafts, and the ratchet grooves 511 are clamped between the ratchet grooves 4, referring to fig. 3, clamping grooves 52 are respectively formed on both sides of the bottom of the clamping sleeve 5, compression springs 53 are respectively fixedly connected to the bottoms of the clamping grooves 52, sealing pads 54 are respectively fixedly connected to the bottoms of the compression springs 53, the insertion rod 51 can be inserted into the ratchet groove 4, and the insertion rod 51 can be limited due to additional teeth 511, so that the first centralizer clamping sleeve 2 and the second centralizer clamping sleeve 3 can be tightly held outside the sucker rod body 1, the installation steps of the centralizer are simplified, the installation speed of the centralizer is increased, the sealing pads 54 can be always tightly pressed on the tops of the first centralizer clamping sleeve 2 and the second centralizer clamping sleeve 3 by the compression springs 53 additionally arranged in the clamping grooves 52, the sealing performance between the sucker rod body 1 and the centralizer is improved, oil stains are prevented from entering between the sucker rod body 1 and the centralizer, and the centralizer is prevented from easily falling off, the middle parts of the first centralizer clamping sleeve 2 and the second centralizer clamping sleeve 3 far from one side of the sucker rod body 1 are fixedly provided with a transmission case 6, please refer to fig. 4, the upper parts of the transmission case 6 far from one end of the sucker rod body 1 are transversely and fixedly connected with a fixed plate 7, the bottom of the fixed plate 7 is connected with a roller 8 through a rotating shaft, the bottom of the roller 8 is coaxially connected with a first bevel gear 9, one side of the first bevel gear 9 near the transmission case 6 is respectively engaged with a second bevel gear 10, one side of the second bevel gear 10 facing the transmission case 6 is respectively and coaxially connected with a transmission rod 11, the transmission rod 11 transversely penetrates through the middle part of the inner cavity of the transmission case 6, the other end of the transmission rod 11 is movably connected with the corresponding side wall of the inner cavity of the transmission case 6 through a ball bearing, the right side of the rod body of the transmission rod 11 positioned in the transmission case 6 is coaxially connected with a cam 14, the top and the bottom of the transmission case 6 are respectively provided with a connecting rod 15 corresponding to the cam 14, a top plate 16 is arranged at one end of the connecting rod 15 facing the transmission rod 11, a damping spring 17 is sleeved at the outer side of the rod body of the connecting rod 15 positioned in the transmission box 6, so that the connecting rod 15 can move up and down in the working process of the sucker rod body 1 and drive the roller 8 to roll, the first bevel gear 9 drives the second bevel gear 10 and the transmission rod 11 to rotate, and further drives the cam 14 to rotate, so that the reciprocating push top plate 16 extrudes the damping spring 17, the connecting rod 15 drives the scraper 18 to scrape the inner wall of the oil pipe in a large range, the phenomenon of wax deposition between the sucker rod body 1 and the oil pipe due to long-time use is prevented, the service life of the oil pumping equipment is prolonged, the scraper 18 is connected at one end of the connecting rod 15 positioned at the outer side of the transmission box 6, the left end of the scraper 18 is arc-shaped, and the left part of the scraper 18 is provided with a frosted bulge, all welded has the boss between the scraper blade 18 and the left junction of connecting rod 15, has strengthened the stability of being connected between connecting rod 15 and the scraper blade 18.

The working principle of the device is as follows: firstly, a first centralizer cutting sleeve 2 is inserted into a limiting slot 31 on a second centralizer cutting sleeve 3 through a limiting inserted rod 21, then an inserted rod 51 is inserted into a ratchet groove 4 through a clamping sleeve 5, and the inserted rod 51 can be limited due to the additional arrangement of a latch 511, so that the first centralizer cutting sleeve 2 and the second centralizer cutting sleeve 3 are tightly held outside a sucker rod body 1, the installation steps of the centralizer are simplified, the installation speed of the centralizer is improved, a compression spring 53 additionally arranged inside the clamping groove 52 can always tightly press a sealing cushion plate 54 on the tops of the first centralizer cutting sleeve 2 and the second centralizer cutting sleeve 3, the sealing performance between the sucker rod body 1 and the centralizer is improved, the roller 8 can be driven to roll when the sucker rod body 1 moves up and down in work, and the second bevel gear 10 and a transmission rod 11 are driven to rotate by a first bevel gear 9, and further, the cam 14 is driven to rotate, so that the reciprocating push top plate 16 extrudes the damping spring 17, the connecting rod 15 drives the scraper 18 to scrape the inner wall of the oil pipe in a large range, the phenomenon of wax deposition caused by long-time use between the sucker rod body 1 and the oil pipe is prevented, and the service life of the oil pumping equipment is prolonged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an oil sucker rod revolves card centralizer of using in pit, includes sucker rod body (1), its characterized in that: the left side of the sucker rod body (1) is clamped with a first centralizer clamping sleeve (2), the right side of the sucker rod body (1) is clamped with a second centralizer clamping sleeve (3), the middle positions of the tops of the first centralizer clamping sleeve (2) and the second centralizer clamping sleeve (3) are respectively and longitudinally provided with a ratchet groove (4), the upper part of the sucker rod body (1) is screwed with a clamping sleeve (5), two sides of the bottom of the clamping sleeve (5) are respectively and longitudinally and fixedly connected with an inserted rod (51), the inserted rods (51) are respectively inserted into the ratchet grooves (4), two sides of the bottom of the inserted rod (51) are respectively and movably connected with clamping teeth (511) through rotating shafts, the clamping teeth (511) are respectively clamped between the ratchet grooves (4), two sides of the bottom of the clamping sleeve (5) are respectively provided with a clamping groove (52), and the groove bottoms of the clamping grooves (52) are respectively and fixedly connected with compression springs (53), the equal fixedly connected with sealing pad plate (54) in bottom of compression spring (53), the equal fixed mounting in middle part that sucker rod body (1) one side was kept away from in first centralizer cutting ferrule (2) and second centralizer cutting ferrule (3) has transmission case (6), the equal horizontal fixedly connected with fixed plate (7) in upper portion that sucker rod body (1) one end was kept away from in transmission case (6), the bottom of fixed plate (7) all is connected with gyro wheel (8) through the pivot, the equal coaxial coupling in bottom of gyro wheel (8) has first awl tooth (9), one side that first awl tooth (9) are close to transmission case (6) all meshes second awl tooth (10), the equal coaxial coupling in one side of second awl tooth (10) towards transmission case (6) has transfer line (11), transfer line (11) all transversely run through the inner chamber middle part of transmission case (6), and the other end of transfer line (11) all corresponds the lateral wall activity through ball bearing and links to each other side wall with the inner chamber of transmission case (6) and link to each other And (6) connecting.

2. The sucker rod rotating clamp centralizer for the downhole according to claim 1, wherein: the bottom of first centralizer cutting ferrule (2) and second centralizer cutting ferrule (3) is equal fixedly connected with mounting panel (12), mounting panel (12) are towards the equal horizontal fixedly connected with expanding spring (13) in upper portion and the lower part of sucker rod body (1) one side, the equal fixedly connected with rubber pad (131) of the other end of expanding spring (13).

3. The sucker rod rotating clamp centralizer for the downhole according to claim 1, wherein: spacing slot (31) have all been seted up to the upper portion and the lower part on second centralizer cutting ferrule (3) left, the equal fixedly connected with spacing inserted bar (21) in the right side of first centralizer cutting ferrule (2) and the corresponding position of spacing slot (31), and the pole body outside of spacing inserted bar (21) all is overlapped and is equipped with flexible pad (211).

4. The sucker rod rotating clamp centralizer for the downhole according to claim 1, wherein: the damping mechanism is characterized in that a cam (14) is coaxially connected to the right side of a rod body of the transmission rod (11) inside the transmission box (6), connecting rods (15) are respectively inserted into the top and the bottom of the transmission box (6) corresponding to the cam (14), a top plate (16) is respectively installed at one end, facing the transmission rod (11), of each connecting rod (15), and damping springs (17) are respectively sleeved on the outer side of the rod body of the connection rod (15) inside the transmission box (6).

5. The sucker rod swivel centralizer of claim 4, wherein: the one end that connecting rod (15) are located transmission case (6) outside all is connected with scraper blade (18), all weld between scraper blade (18) and the left junction of connecting rod (15) has the boss.

6. The sucker rod rotating clamp centralizer of claim 5, wherein: the left end of the scraper (18) is arc-shaped, and the left part of the scraper (18) is provided with a frosted bulge.