Auxiliary installation device and installation method for sucker rod centralizer

Abstract

The application relates to an auxiliary installation device for a sucker rod centralizer and an installation method, and relates to the technical field of auxiliary installation devices for centralizers. The auxiliary installation device comprises a first centralizer and a second centralizer, the left end of the first centralizer is provided with a first auxiliary mechanism, the right end of the second centralizer is provided with a second auxiliary mechanism, the first auxiliary mechanism comprises two first installation rings arranged oppositely, and the second auxiliary mechanism comprises two second installation rings arranged oppositely. The centralizing and limiting mechanism can realize accurate centering and synchronous stable limiting when the first centralizer and the second centralizer are installed one by one, and the assembling operation of a single centralizer has outstanding effects, and the problems of positioning deviation, uneven stress and eccentric misplacement during single manual installation can be solved.

Description

Technical Field

[0001] This invention relates to the technical field of auxiliary installation devices for centralizers, specifically to an auxiliary installation device and installation method for a sucker rod centralizer. Background Technology

[0002] In oil extraction operations, rod-operated pumping systems are the most commonly used oil production equipment in oilfield development. The sucker rod, as the core component connecting the surface pumping unit and the downhole pump, needs to reciprocate up and down inside the tubing to lift crude oil. Due to the well type, especially in directional, deviated, horizontal, and extended reach wells, the sucker rod is prone to deviating from the center of the tubing. During operation, continuous wear occurs against the inner wall of the tubing, leading to sucker rod breakage, tubing leakage, pump jamming, and other malfunctions, severely impacting normal well production and increasing the frequency of pump inspections and maintenance costs. Currently, most mainstream sucker rod centralizers are split clamp structures (such as two-half nylon centralizers), which can be directly fitted onto the sucker rod body or coupling, allowing for installation without disassembling the rod string.

[0003] Currently, the installation of sucker rod centralizers in oilfields largely relies on manual labor and simple tools. In some scenarios, there are no specialized auxiliary installation devices, making the installation process cumbersome, difficult to operate, and challenging to guarantee installation accuracy and stability. As oilfield development gradually expands towards deeper, ultra-deep, and deviated wells, the requirements for the installation quality, operational efficiency, and construction safety of centralizers are constantly increasing. Most conventional centralizer installations are done manually, which makes it difficult for manual labor to smoothly push the centralizer to the designated position. The centralizer position needs to be repeatedly corrected, and the installation of a single sucker rod centralizer is extremely time-consuming. Most existing simple auxiliary tools lack precise positioning and guiding mechanisms, and the centralizer is prone to radial offset and tilting during installation, failing to maintain a coaxial and centered state with the sucker rod, resulting in excessive deviation in the centralizer installation position.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary installation device and installation method for a sucker rod centralizer to solve the problems mentioned in the background. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an auxiliary installation device and installation method for a sucker rod centralizer, comprising a first centralizer and a second centralizer, wherein the first centralizer has a first auxiliary mechanism at its left end and the second centralizer has a second auxiliary mechanism at its right end, the first auxiliary mechanism includes two opposing first mounting rings and the second auxiliary mechanism includes two opposing second mounting rings, wherein a rotating ring is rotatably connected to the ends of the first mounting rings away from the first centralizer and the ends of the second mounting rings away from the second centralizer, mounting frames are installed on the surfaces of the two first mounting rings and the two second mounting rings, a centering limiting mechanism is installed inside the two first mounting rings and the two second mounting rings, and an auxiliary closing mechanism is provided on the surfaces of the first centralizer and the second centralizer; The centering limiting mechanism includes a linkage plate installed inside the rotating ring, a rotating plate installed at the end of the rotating ring away from the mounting frame, a calibration platform that is limited and slidable inside the mounting frame, a sliding rod installed at the end of the calibration platform near the rotating ring, a screw threadedly connected inside the calibration platform, and a pressure rod that is limited and slidable inside the first mounting ring and the second mounting ring respectively.

[0007] Preferably, the two first mounting rings are arranged in a mirror image opposite each other and are mounted to the surface of the stabilizer by bolts; the two second mounting rings are arranged in a mirror image opposite each other and are mounted to the surface of the stabilizer by bolts; the two first mounting rings and the two second mounting rings are arranged in a mirror image.

[0008] Preferably, the first mounting ring has a sliding top rod inside its rotating ring at the end furthest from the first stabilizer, the top rod passing through a protruding plate at one end of the rotating ring and abutting against the end of the first mounting ring furthest from the first stabilizer; the second mounting ring has a sliding top rod inside its rotating ring at the end furthest from the second stabilizer, the top rod passing through a protruding plate at one end of the rotating ring and abutting against the end of the second mounting ring furthest from the second stabilizer; a spring is mounted on the surface of the top rod, and the other end of the spring is connected to the rotating ring.

[0009] Preferably, the surface of the linkage plate is provided with an inclined groove, one end of the slide rod near the calibration table slides within a vertical groove inside the mounting frame, and the other end of the slide rod slides within an inclined groove on the surface of the linkage plate.

[0010] Preferably, a ball bearing is installed at the bottom of the calibration platform, and a rubber block is installed at the bottom of the screw through the calibration platform; an inclined arc-shaped groove is opened inside the rotating plate, and the end of the pressure rod away from the first mounting ring and the second mounting ring slides within the inclined arc-shaped groove of the rotating plate.

[0011] Preferably, the auxiliary closing mechanism includes a mounting block inserted inside the pressure rod. A pull rod is installed on the mounting block of the pressure rod located inside the first mounting ring at the end near the first stabilizer. A sleeve is installed on the mounting block of the pressure rod located inside the second mounting ring at the end near the second stabilizer. An insert rod is vertically limited and slidable inside the sleeve. An insert block is installed on the end of the insert rod located inside the sleeve.

[0012] Preferably, the sleeve is fitted onto the surface of the pull rod, and a spring is installed on the surface of the pull rod, with the other end of the spring connected to the inner wall of the sleeve.

[0013] Preferably, the pull rod surface has several insertion holes, the insertion rod surface is equipped with a spring, one end of the spring is connected to the sleeve, the other end is connected to the insertion block, and the bottom of the insertion block has an inclined surface.

[0014] Preferably, the method includes the following steps: S1: First, fix the two first mounting rings and the two second mounting rings to the surface of the sucker tube with bolts, and attach them to the first centralizer and the second centralizer respectively; pull the push rod, rotate the ring to make the calibration table contact the sucker tube, and after releasing, the pressure rod contact the limit centralizer; S2: Pull the lever to slide out of the sleeve, and the insert block is unidirectionally limited; insert the mounting blocks at both ends into the pressure rods of the first mounting ring and the second mounting ring respectively, and pull the lever to disengage the insert block; S3: The pull rod spring returns to its original position, causing the first mounting ring to move closer to the second mounting ring, providing assistance for the installation of the centralizer; finally, the screw is rotated so that the bottom rubber block contacts the sucker rod, completing the position limit.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention, through its centralizing and limiting mechanism, enables precise centralization calibration and synchronous stable limiting for the individual installation of the first and second centralizers. It offers significant advantages for the assembly of individual centralizers, completely resolving the pain points of traditional manual single-unit installation, such as positioning deviation, uneven force distribution, and easy eccentricity and misalignment. First, the calibration structure automatically aligns with the sucker rod, ensuring that each centralizer remains coaxial with the sucker rod, preventing skewness or offset after installation. Then, the limiting structure provides flexible contact locking for each centralizer, preventing shaking, displacement, or axial movement during installation. This ensures the installation accuracy of each centralizer meets standards, guaranteeing the stable performance of its core function of downhole centralization and anti-wear. It also allows for independent, step-by-step installation without relying on adjacent centralizers, adapting to flexible operating scenarios such as single-unit replacement and partial replacement. Simultaneously, it effectively prevents problems such as cracking, deformation, and damage to fasteners caused by installation eccentricity or uneven force distribution in individual centralizers.

[0016] 2. This invention, through its auxiliary closing mechanism, provides uniform and stable axial assistance during the assembly and docking process after the centralizer has completed centering calibration. This eliminates the tedious manual pressing and assembly operations, significantly reducing on-site labor intensity, accelerating assembly speed, and improving overall installation efficiency. It also avoids problems such as eccentricity, misalignment, cracking, deformation, or damage to the centralizer caused by uneven manual force application. This firmly consolidates the accuracy of the initial centering calibration, ensuring a tight fit and coaxiality after centralizer assembly. At the same time, it makes the force application during assembly smooth and controllable, further ensuring the stability of the centralizer installation and enabling it to stably perform its anti-wear function during subsequent downhole operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main body of the first and second stabilizers of the present invention; Figure 2 This is an exploded structural diagram of the first and second centralizers of the present invention; Figure 3 This is a schematic diagram of the structure of the first mounting ring and the second mounting ring of the present invention; Figure 4 This is an exploded structural diagram of the first mounting ring and the rotating ring of the present invention; Figure 5 This is a cross-sectional structural diagram of the first mounting ring of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A; Figure 7 This is an exploded structural diagram of the first mounting ring and the rotating ring of the present invention from another perspective. Figure 8 This is a partial cross-sectional structural diagram of the auxiliary closure mechanism of the present invention; Figure 9 For the present invention Figure 8 A magnified structural diagram at point B in the middle.

[0018] In the diagram: 1. First stabilizer; 2. Second stabilizer; 3. First mounting ring; 4. Second mounting ring; 5. Rotating ring; 601. Linkage plate; 602. Rotating plate; 603. Calibration platform; 604. Slide rod; 605. Screw; 606. Pressure rod; 7. Top rod; 8. Mounting frame; 901. Mounting block; 902. Pull rod; 903. Sleeve; 904. Insert rod; 905. Insert block. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0020] Please seeFigures 1-9 This invention provides a technical solution: an auxiliary installation device and method for a sucker rod centralizer, comprising a first centralizer 1 and a second centralizer 2. The first centralizer 1 has a first auxiliary mechanism at its left end, and the second centralizer 2 has a second auxiliary mechanism at its right end. The first auxiliary mechanism includes two opposing first mounting rings 3, and the second auxiliary mechanism includes two opposing second mounting rings 4. The two first mounting rings 3 are mirror images of each other and are bolted to the surface of the centralizer. The two second mounting rings 4 are also mirror images of each other and are bolted to the surface of the centralizer. The two first mounting rings 3 and the two second mounting rings 4 are mirror images of each other, with the first mounting rings 3 and the second mounting rings 4 located away from the first centralizer 1 and the second mounting rings 4 located away from the second centralizer 2, respectively. All are rotatably connected by a rotating ring 5. Mounting frames 8 are mounted on the surfaces of the two first mounting rings 3 and the two second mounting rings 4. A top rod 7 is slidably limited inside the rotating ring 5 at the end of the first mounting ring 3 away from the first centralizer 1. The top rod 7 passes through a protruding plate at one end of the rotating ring 5 and abuts against the end of the first mounting ring 3 away from the first centralizer 1. A top rod 7 is slidably limited inside the rotating ring 5 at the end of the second mounting ring 4 away from the second centralizer 2. The top rod 7 passes through a protruding plate at one end of the rotating ring 5 and abuts against the end of the second mounting ring 4 away from the second centralizer 2. A spring is mounted on the surface of the top rod 7, and the other end of the spring is connected to the rotating ring 5. A centering limiting mechanism is installed inside each of the two first mounting rings 3 and the two second mounting rings 4. An auxiliary closing mechanism is provided on the surfaces of the first centralizer 1 and the second centralizer 2.

[0021] As one embodiment of the present invention, the centering limiting mechanism includes a linkage plate 601 installed inside the rotating ring 5, a rotating plate 602 installed at the end of the rotating ring 5 away from the mounting frame 8, a calibration platform 603 sliding inside the mounting frame 8, a ball bearing installed at the bottom of the calibration platform 603, and a rubber block installed through the bottom of the screw 605 through the calibration platform 603; the rotating plate 602 has an inclined arc groove inside, the pressure rod 606 slides in the inclined arc groove inside the rotating plate 602 at the end away from the first mounting ring 3 and the second mounting ring 4, a sliding rod 604 is installed at the end of the calibration platform 603 near the rotating ring 5, the linkage plate 601 has an inclined groove, the sliding rod 604 slides in the vertical groove inside the mounting frame 8 at the end near the calibration platform 603, and the other end of the sliding rod 604 slides in the inclined groove on the surface of the linkage plate 601, the calibration platform 603 is threadedly connected to the screw 605, and also includes a pressure rod 606 that slides in the first mounting ring 3 and the second mounting ring 4 respectively. During installation, firstly, the two first mounting rings 3 and the two second mounting rings 4 are respectively fitted onto the surface of the sucker rod and secured with bolts. Then, the first centralizer 1 and the second centralizer 2 are sequentially fitted onto the corresponding positions on the sucker rod, respectively fitting and positioning against the first mounting rings 3 and the second mounting rings 4. Subsequently, the push rod 7 is pulled to disengage from the corresponding mounting ring, and the outer rotating ring 5 of the mounting ring is rotated, causing the linkage plate 601 to move synchronously. With the help of the inclined groove on the surface of the linkage plate 601, the calibration platform 603 is driven to slide down the mounting frame 8 towards the sucker rod until the ball bearing at the end of the calibration platform 603 tightly contacts the sucker rod, completing the initial centering calibration. After releasing the push rod 7, its surface spring returns to its original position, and the push rod 7 synchronously drives the rotating plate 602 to rotate, causing the pressure rod 6 to... 06 slides along the inner arc-shaped inclined groove of the rotating plate 602, moves towards the inner side of the installation ring, and achieves flexible contact and limiting of the corresponding centralizer, completing the calibration and fixing of a single centralizer; the centering limiting mechanism can achieve precise centering calibration and synchronous stable limiting of the first centralizer 1 and the second centralizer 2 when they are installed one by one. It has significant advantages for the assembly of a single centralizer, and can fundamentally solve the disadvantages of traditional manual single installation such as positioning deviation, uneven force, and easy eccentricity and misalignment. Relying on the calibration structure to fit the sucker rod to achieve automatic centering, it ensures that the single centralizer and the sucker rod remain coaxial, and prevents skew and displacement after installation. With the help of the limiting structure, it achieves flexible locking and avoids the centralizer shaking, displacement or axial movement during installation.

[0022] In one embodiment of the present invention, the auxiliary closing mechanism includes a mounting block 901 inserted into the pressure rod 606. A pull rod 902 is installed on the mounting block 901 of the pressure rod 606 located inside the first mounting ring 3 near the first stabilizer 1. A sleeve 903 is installed on the mounting block 901 of the pressure rod 606 located inside the second mounting ring 4 near the second stabilizer 2. The sleeve 903 is sleeved on the surface of the pull rod 902. A spring is installed on the surface of the pull rod 902. A plurality of insertion holes are opened on the surface of the insertion rod 904. A spring is installed on the surface of the insertion rod 904. One end of the spring is connected to the sleeve 903 and the other end is connected to the insertion block 905. An inclined surface is opened at the bottom of the insertion block 905. The other end of the spring is connected to the inner wall of the sleeve 903. The insertion rod 904 is vertically limited and slidable inside the sleeve 903. The insertion block 905 is installed on one end of the insertion rod 904 inside the sleeve 903. During installation, firstly, the two first mounting rings 3 and the two second mounting rings 4 are respectively fitted onto the surface of the sucker rod and secured with bolts. Then, the first centralizer 1 and the second centralizer 2 are sequentially fitted onto the corresponding positions on the sucker rod, aligning with the first mounting rings 3 and 4 respectively. Next, the push rod 7 is pulled to disengage from the corresponding mounting ring, and the outer rotating ring 5 of the mounting ring is rotated, causing the linkage plate 601 to move synchronously. Using the inclined groove on the surface of the linkage plate 601, the calibration platform 603 is driven to slide down the mounting frame 8 towards the sucker rod until the ball bearings at the end of the calibration platform 603 are tightly fitted to the sucker rod, completing the centering calibration of a single centralizer. After releasing the push rod 7, its surface spring automatically returns to its original position, and the push rod 7 synchronously drives the rotating plate 602 to rotate, promoting… The pressure rod 606 slides along the arc-shaped inclined groove inside the rotating plate 602, moving inward to the inner side of the installation ring and flexibly resisting and limiting the centralizer, thus completing the calibration and fixing of a single centralizer. The centering limiting mechanism can achieve precise centering and stable limiting for the individual installation of the first centralizer 1 and the second centralizer 2, solving the problems of positioning deviation, uneven force, and easy eccentricity and misalignment in traditional manual installation from the root. It ensures that a single centralizer and the sucker rod remain coaxial, while the flexible locking prevents shaking, displacement, or axial movement during installation. It is suitable for flexible operation scenarios such as single-unit supplementation and partial replacement, preventing the centralizer from cracking, deforming, or breaking due to improper force, and comprehensively ensuring the installation accuracy and subsequent downhole centralization and anti-wear effect. After the single centralizer is positioned, pull rod 902 is slid out of sleeve 903. The spring on the outside of pull rod 902 is compressed and contracts, and the internal insertion hole cooperates with insertion block 905 to achieve one-way positioning. After pull rod 902 is pulled out to the appropriate length, the mounting block 901 at the end of the sleeve 903 is respectively inserted into the pressure rod 606 of the first mounting ring 3 and the second mounting ring 4. Pulling insertion rod 904 releases the limiting of insertion block 905, and the spring of pull rod 902 automatically returns to its original position, driving the first mounting ring 3 to move smoothly towards the second mounting ring 4. The auxiliary closing mechanism provides uniform and gentle axial assistance for the centralizer assembly, which not only saves the tedious operation of manual pressing and assembly, reduces the labor intensity of on-site work, and improves installation efficiency, but also avoids the centralizer misalignment and damage caused by uneven manual force, firmly consolidating the previous centering and calibration results. Finally, rotate screw 605 so that the bottom rubber block tightly contacts the sucker rod, completing the overall installation and positioning.

[0023] As one embodiment of the present invention, the method includes the following steps: S1: First, fix the two first mounting rings 3 and the two second mounting rings 4 to the surface of the sucker pipe with bolts, and attach them to the first stabilizer 1 and the second stabilizer 2 respectively; pull the top rod 7, rotate the rotating ring 5 to drive the calibration table 603 to contact the sucker pipe, and after releasing, the pressure rod 606 will contact the limit stabilizer. S2: Pull the lever 902 to slide out of the sleeve 903, and the insert block 905 is unidirectionally limited; insert the mounting blocks 901 at both ends into the pressure rods 606 of the first mounting ring 3 and the second mounting ring 4 respectively, and pull the insert rod 904 to disengage the insert block 905; S3: The spring of the pull rod 902 returns to its original position, causing the first mounting ring 3 to move closer to the second mounting ring 4, providing assistance for the installation of the centralizer; finally, the screw 605 is rotated so that the rubber block at its bottom contacts the sucker rod, completing the position limit.

[0024] Working principle: During installation, firstly, two second mounting rings 4 and two first mounting rings 3 are installed on the surface of the sucker tube and fixed to the surface of the sucker tube with bolts. Then, the first stabilizer 1 is installed on the surface of the sucker tube, with its left side abutting against the first mounting ring 3. At this time, the push rod 7 is pulled to disengage it from the first mounting ring 3. Then, the rotating ring 5 rotates on the surface of the first mounting ring 3. As the rotating ring 5 rotates, it drives the linkage plate 601 to move together. Through the inclined groove on the surface of the linkage plate 601, the calibration platform 603 slides down inside the mounting frame 8 and moves towards the sucker tube, so that the ball bearing at the end of the calibration platform 603 abuts against the sucker tube. Then, the push rod 7 is released. At this time, the spring on the surface of the push rod 7 loses pressure and rebounds, abutting against the first mounting ring 3 again. As the push rod 7 rotates, it drives the rotating plate 602 to rotate synchronously, so that the pressure rod 606 slides within the arc-shaped inclined groove inside the rotating plate 602, thus limiting the sliding of the pressure rod 606. Move towards the inner side of the first mounting ring 3 and abut against the first stabilizer 1. Then, install the second stabilizer 2 on the surface of the sucker tube and align its right side with the second mounting ring 4. At this time, pull the push rod 7 to disengage it from the second mounting ring 4. Then, rotate the rotating ring 5 on the surface of the second mounting ring 4. As the rotating ring 5 rotates, it drives the linkage plate 601 to move together. Through the inclined groove on the surface of the linkage plate 601, it drives the calibration table 603 to slide down inside the mounting frame 8 and move towards the sucker tube. The ball bearing at the end of the calibration table 603 abuts against the sucker tube. Then, release the push rod 7. At this time, the spring on the surface of the push rod 7 loses pressure and rebounds, abutting against the second mounting ring 4 again. As the push rod 7 rotates, it drives the rotating plate 602 to rotate synchronously, so that the pressure rod 606 slides within the arc-shaped inclined groove inside the rotating plate 602. This causes the pressure rod 606 to move towards the inner side of the second mounting ring 4 and abut against the second stabilizer 2. Then, pull the lever 902 to slide it out of the sleeve 903. As the lever 902 extends, the internal insertion hole abuts against the inclined surface of the insertion block 905, giving the insertion block 905 a one-way limiting function for the lever 902. Simultaneously, the surface spring is compressed as the lever 902 slides out, keeping it in a contracted state. After the lever 902 has been pulled out to an appropriate length, insert the mounting block 901 at the end of the lever 902 away from the sleeve 903 into the pressure rod 606 inside the first mounting ring 3. Then, the sleeve 903... The mounting block 901, located away from the pull rod 902, is inserted into the pressure rod 606 inside the second mounting ring 4. Then, the insertion rod 904 is pulled to disengage the insertion block 905 from the insertion hole. At this time, the spring on the surface of the pull rod 902 automatically returns to its original position, causing the first mounting ring 3 to move closer to the second mounting ring 4, thus assisting in the installation of the first centralizer 1 and the second centralizer 2. Then, the screw 605 is rotated so that the bottom rubber block contacts the sucker rod, thus limiting the position of the first mounting ring 3 and the second mounting ring 4.

[0025] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An auxiliary installation device for a sucker rod centralizer, comprising a first centralizer (1) and a second centralizer (2), characterized in that: The first straightener (1) is provided with a first auxiliary mechanism on the left end, and the second straightener (2) is provided with a second auxiliary mechanism on the right end. The first auxiliary mechanism includes two opposing first mounting rings (3), and the second auxiliary mechanism includes two opposing second mounting rings (4). The ends of the first mounting rings (3) away from the first straightener (1) and the second mounting rings (4) away from the second straightener (2) are rotatably connected with rotating rings (5). The surfaces of the two first mounting rings (3) and the two second mounting rings (4) are all equipped with mounting frames (8). The two first mounting rings (3) and the two second mounting rings (4) are all equipped with a centering limiting mechanism. The surfaces of the first straightener (1) and the second straightener (2) are provided with auxiliary closing mechanisms. The centering limiting mechanism includes a linkage plate (601) installed inside the rotating ring (5), a rotating plate (602) installed at the end of the rotating ring (5) away from the mounting frame (8), a calibration platform (603) sliding inside the mounting frame (8), a slide rod (604) installed at the end of the calibration platform (603) near the rotating ring (5), a screw rod (605) threaded inside the calibration platform (603), and a pressure rod (606) that slides inside the first mounting ring (3) and the second mounting ring (4) respectively.

2. The auxiliary installation device for a sucker rod centralizer according to claim 1, characterized in that: The two first mounting rings (3) are arranged in a mirror image and are mounted on the surface of the stabilizer by bolts. The two second mounting rings (4) are arranged in a mirror image and are mounted on the surface of the stabilizer by bolts. The two first mounting rings (3) and the two second mounting rings (4) are arranged in a mirror image.

3. The auxiliary installation device for a sucker rod centralizer according to claim 2, characterized in that: The first mounting ring (3) has a top rod (7) that slides inside the rotating ring (5) at the end away from the first stabilizer (1). The top rod (7) passes through the convex plate at one end of the rotating ring (5) and abuts against the end of the first mounting ring (3) away from the first stabilizer (1). The second mounting ring (4) has a top rod (7) that slides inside the rotating ring (5) at the end away from the second stabilizer (2). The top rod (7) passes through the convex plate at one end of the rotating ring (5) and abuts against the end of the second mounting ring (4) away from the second stabilizer (2). A spring is installed on the surface of the top rod (7), and the other end of the spring is connected to the rotating ring (5).

4. The auxiliary installation device for a sucker rod centralizer according to claim 3, characterized in that: The linkage plate (601) has a slanted groove on its surface. The slide rod (604) near the calibration platform (603) slides within the vertical groove inside the mounting frame (8), and the other end of the slide rod (604) slides within the slanted groove on the surface of the linkage plate (601).

5. An auxiliary installation device for a sucker rod centralizer according to claim 4, characterized in that: The calibration platform (603) is equipped with ball bearings at the bottom, and the bottom of the screw (605) is fitted with a rubber block through the calibration platform (603); the rotating plate (602) has an inclined arc groove inside, and the end of the pressure rod (606) away from the first mounting ring (3) and the second mounting ring (4) slides within the inclined arc groove of the rotating plate (602).

6. An auxiliary installation device for a sucker rod centralizer according to claim 5, characterized in that: The auxiliary closing mechanism includes a mounting block (901) inserted inside the pressure rod (606). The mounting block (901) of the pressure rod (606) located inside the first mounting ring (3) has a pull rod (902) installed at one end near the first stabilizer (1). The mounting block (901) of the pressure rod (606) located inside the second mounting ring (4) has a sleeve (903) installed at one end near the second stabilizer (2). A vertically limited sliding insert rod (904) is installed inside the sleeve (903). An insert block (905) is installed at one end of the insert rod (904) inside the sleeve (903).

7. An auxiliary installation device for a sucker rod centralizer according to claim 6, characterized in that: The sleeve (903) is fitted onto the surface of the pull rod (902), and a spring is installed on the surface of the pull rod (902). The other end of the spring is connected to the inner wall of the sleeve (903).

8. An auxiliary installation device for a sucker rod centralizer according to claim 7, characterized in that: The pull rod (902) has several insertion holes on its surface, and the insertion rod (904) has a spring installed on its surface. One end of the spring is connected to the sleeve (903), and the other end is connected to the insertion block (905). The bottom of the insertion block (905) has an inclined surface.

9. A method of using an auxiliary installation device for a sucker rod centralizer, applicable to the auxiliary installation device for a sucker rod centralizer as described in any one of claims 1-8, characterized in that: The method includes the following steps: S1: First, fix the two first mounting rings (3) and the two second mounting rings (4) to the surface of the sucker pipe with bolts, and attach them to the first stabilizer (1) and the second stabilizer (2) respectively; pull the top rod (7), rotate the rotating ring (5) to drive the calibration table (603) to contact the sucker pipe, and release the pressure rod (606) to contact the limit stabilizer. S2: Pull the lever (902) to slide out of the sleeve (903), and the insert (905) is unidirectionally limited; insert the two mounting blocks (901) into the pressure rods (606) of the first mounting ring (3) and the second mounting ring (4) respectively, and pull the insert (904) to disengage the insert (905). S3: The spring of the pull rod (902) returns to its original position, causing the first mounting ring (3) to move closer to the second mounting ring (4), providing assistance for the installation of the stabilizer; finally, the screw (605) is rotated so that the bottom rubber block abuts against the sucker rod, completing the position limit.

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