A packing installation tool

Abstract

The utility model relates to oil extraction equipment maintenance technical field especially relates to a kind of packing installation tool.A kind of packing installation tool, including first ring and the second ring of screw connection in the upper end of first ring, the first ring bottom is equipped with the filling pressure block for extending into packing box and filling packing, the first ring and the second ring are respectively equipped with the longitudinal opening and righting structure that can be supplied to the horizontal passage of light pole, when the longitudinal opening of the first ring and the second ring is circumferentially position stagger, the righting structure position of two rings is opposite to righting along the light pole axial direction of tool, and one ring is equipped with operating handle.Righting along the light pole axial direction of tool by the righting structure cooperation of two rings, by operating handle, tool can be lifted as a whole, make tool whole slide along light pole up and down, impact force when tool slides downward is used to press packing or belt into packing box, need not use hammer to knock, avoid the damage to light pole, packing cavity screw thread, and operation is safe.

Description

Technical Field

[0001] This utility model relates to the field of oil production equipment maintenance technology, and in particular to a packing installation tool. Background Technology

[0002] During the pumping unit's operation, the pumping unit drives the polished rod to reciprocate. Packing is installed in the packing box at the wellhead of the oil and gas well to ensure a seal between the polished rod and the wellhead. To prevent oil and gas leakage at the connection point, the wellhead packing needs to be replaced periodically. Replacing the packing requires using a hammer, screwdriver, or punch to install the packing or belt. Because the packing and packing box have an interference fit, this often results in the packing or belt being damaged, preventing a proper seal. Furthermore, this method is time-consuming and labor-intensive; improper operation can easily injure fingers or damage the polished rod and the threads of the packing cavity.

[0003] Traditional packing installation devices, such as the simple and quick packing device disclosed in Chinese utility model patent CN202039803U, include a body that is semi-cylindrical in shape, with a handle attached and a step at the top. In use, the handle is held, the semi-cylindrical body is placed into the packing box, and a hammer is used to strike the step at the top of the body to tighten the packing. This traditional packing installation device also requires a hammer to strike the packing, which still presents the problem of the hammer damaging the smooth rod and the threads of the packing cavity. Furthermore, the hammer can easily fly out, posing a potential hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a packing installation tool to solve the problem that the existing technology requires the use of a hammer to strike the packing when installing it, which can easily damage the bare rod and the threads of the packing cavity and pose a safety hazard.

[0005] The present invention adopts the following technical solution:

[0006] A packing installation tool includes a first collar and a second collar threaded to the upper end of the first collar. The bottom of the first collar is provided with a packing block for inserting into the packing box to pack the packing. The first and second collars are respectively provided with a longitudinal opening for the smooth rod to pass through laterally and a straightening structure. When the longitudinal openings of the first and second collars are staggered in the circumferential direction, the straightening structures of the two collars are positioned opposite each other to straighten the tool along the axial direction of the smooth rod. One of the collars is provided with an operating handle.

[0007] Furthermore, a third ring is threadedly connected to the upper part of the second ring. The third ring is provided with a longitudinal opening for the smooth rod to pass through laterally and a straightening structure. When the longitudinal openings of the second and third rings are staggered in the circumferential direction, the straightening structures of the second and third rings are positioned relative to each other to straighten the tool along the axial direction of the smooth rod.

[0008] Furthermore, the second collar is provided with the operating handle, and the first and second collars, as well as the second and third collars, are connected by reverse threads.

[0009] Furthermore, the inner cavity of the first ring includes a lower small-diameter cavity section and an upper large-diameter cavity section. The cavity wall of the lower small-diameter cavity section slides with the smooth rod to form the straightening structure of the first ring. The upper large-diameter cavity section is threadedly connected to the second ring. The inner circumferential surface of the second ring is provided with a straightening block extending along its axial direction. The inner surface of the straightening block is arc-shaped to fit the smooth rod. The straightening block forms the straightening structure of the second ring.

[0010] Furthermore, the inner cavity of the third ring includes a lower large-diameter cavity section and an upper small-diameter cavity section. The cavity wall of the upper small-diameter cavity section slides with the smooth rod to form the straightening structure of the third ring, and the lower large-diameter cavity section is threadedly connected to the second ring.

[0011] Furthermore, the straightening blocks are provided in two or more and are arranged at intervals along the axial direction of the second ring.

[0012] Furthermore, the straightening block is a wear-resistant rubber block.

[0013] Furthermore, the two ends of the second ring are threaded into the inside of the first and third rings respectively, and the first and third rings are respectively provided with locking structures to lock the first and second rings and the second and third rings in the circumferential direction.

[0014] Furthermore, the locking structure is a set screw.

[0015] Furthermore, the filling block is a longitudinally extending conical block, and the upper end of the filling block is fixedly connected to the first collar.

[0016] Beneficial Effects: This utility model is a pioneering invention. The first and second sets of rings are threaded together. When the two sets of rings are rotated to the same longitudinal opening orientation, they can be fitted onto the smooth rod. Then, when the two sets of rings are rotated to the circumferentially offset position of the longitudinal openings, the two sets of rings can be installed on the smooth rod without detachment. The straightening structure of the two sets of rings helps to straighten the tool along the axial direction of the smooth rod. The tool can be lifted as a whole by operating the handle, allowing the tool to slide up and down along the smooth rod. The bottom of the first set of rings is equipped with a pressing block. The impact force when the tool slides down is used to press the packing or belt into the packing box, eliminating the need for hammering and avoiding damage to the threads of the smooth rod and packing cavity. It is also safe to operate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the packing installation tool of this utility model;

[0018] Figure 2 This is a longitudinal half-section diagram of the first set of rings;

[0019] Figure 3 This is a bottom view of the first set of rings;

[0020] Figure 4 This is a longitudinal half-section diagram of the second ring;

[0021] Figure 5 This is a top view of the second ring;

[0022] Figure 6 This is a longitudinal half-section diagram of the third ring;

[0023] Figure 7 This is a top view of the third ring.

[0024] In the diagram: 1. First collar; 101. Lower small-diameter cavity section; 102. Upper large-diameter cavity section; 2. Second collar; 3. Third collar; 301. Lower large-diameter cavity section; 302. Upper small-diameter cavity section; 4. Filling block; 5. Operating handle; 6. Straightening block; 7. Locking structure; 8. Longitudinal opening; 9. Internal thread structure; 10. Set screw mounting hole; 11. External thread structure. Detailed Implementation

[0025] Existing technologies require hammering when installing packing, which can easily damage the smooth rod and the threads of the packing cavity, posing safety hazards. This invention provides a packing installation tool that eliminates the need for hammering, thus avoiding these problems. The basic inventive concept of this invention is as follows: the packing installation tool has a longitudinal opening, allowing it to be directly fitted onto the smooth rod. The tool has a straightening structure to align the tool along the axial direction of the smooth rod, enabling the tool to slide up and down along the rod. The impact force from the downward sliding of the tool presses the packing or belt into the packing box, eliminating the need for hammering and thus avoiding damage to the smooth rod and the threads of the packing cavity, while also ensuring safe operation.

[0026] Based on the above inventive concept, the embodiments of this utility model are described in detail below.

[0027] like Figure 1 As shown, the packing installation tool of this utility model includes a first collar 1, a second collar 2, and a third collar 3 connected sequentially from bottom to top by threads. The bottom of the first collar 1 is provided with a packing block 4 for inserting into the packing box to pack the packing. Figure 2-7As shown, the first, second, and third collars are respectively provided with longitudinal openings 8 for the transverse passage of the guide rod and straightening structures for straightening the tool. When the longitudinal openings 8 of the three collars face the same direction, the tool can be fitted onto the guide rod as a whole. When the longitudinal openings 8 of the second collar 2 are staggered in the circumferential direction from those of the first collar 1 and the third collar 3, the straightening structures of the first collar 1 and the second collar 2 are positioned relative to each other to straighten the tool along the axial direction of the guide rod. At the same time, the straightening structures of the second collar 2 and the third collar 3 are positioned relative to each other to straighten the tool along the axial direction of the guide rod. The straightening structures of the first, second, and third collars are staggered in the axial direction, forming multi-point straightening along the axial direction of the guide rod. The straightening effect is good, making the tool less prone to tilting and preventing the packing block 4 from impacting the inner wall of the packing box and damaging the packing box due to tool tilting.

[0028] An operating handle 5 is located at the middle of the second collar 2. The operating handles 5 are arranged in pairs, and the tool can be lifted as a whole by operating the handles 5. The first and second collars, as well as the second and third collars, are connected by reverse threads. This allows the lower first collar 1 and the upper third collar 3 to move closer or further apart synchronously when the middle second collar 2 is rotated, making it more convenient to use.

[0029] like Figure 2-3 As shown, the first sleeve ring 1 is a cylindrical shape with a longitudinal opening 8. The inner cavity of the first sleeve ring 1 includes a lower small-diameter cavity section 101 and an upper large-diameter cavity section 102. The cavity wall of the lower small-diameter cavity section 101 is slidably fitted with the smooth rod, and is used to straighten the packing block 4 inserted into the packing box with the smooth rod as the center. The cavity wall of the lower small-diameter cavity section 101 constitutes the straightening structure of the first sleeve ring 1. The cavity wall of the upper large-diameter cavity section 102 has an internal thread structure 9 for threaded connection with the second sleeve ring 2. The upper large-diameter cavity section 102 is also provided with a set screw mounting hole 10.

[0030] like Figure 4-5 As shown, the second ring 2 is a cylindrical shape with a longitudinal opening 8. The inner diameter of the second ring 2 is larger than the outer diameter of the guide rod. A straightening block 6 extending axially is provided on the inner circumferential surface of the second ring 2. The inner surface of the straightening block 6 is arc-shaped to fit against the guide rod. The straightening block 6 constitutes the straightening structure of the second ring 2. The straightening structures of the first and third rings are both in sliding fit with the guide rod, with a sliding fit gap. The straightening block 6 on the second ring 2 fits against the outer circumferential surface of the guide rod without a gap sliding fit. When used in conjunction with the straightening structures of the first and third rings, the straightening effect on the tool is better.

[0031] Two straightening blocks 6 are arranged at intervals along the axial direction of the second ring 2, with the two straightening blocks 6 facing each other vertically. This creates four straightening points at intervals along the axial direction of the polished rod, resulting in a better straightening effect. The two straightening blocks 6 are respectively located at both ends of the second ring 2. The lower straightening block 6 is close to the straightening structure of the lower first ring 1 and works in conjunction with the straightening structure of the lower first ring 1 to achieve the straightening effect. The upper straightening block 6 is close to the straightening structure of the upper third ring 3 and works in conjunction with the straightening structure of the upper third ring 3 to achieve the straightening effect, forming two sets of straightening structures to further optimize the straightening effect. The straightening blocks 6 are made of wear-resistant rubber blocks to avoid damage to the polished rod. Both ends of the second ring 2 are provided with external thread structures 11 for threaded connection with the first and third rings.

[0032] like Figure 6-7 As shown, the third ring 3 is a cylindrical shape with a longitudinal opening 8. The inner cavity of the third ring 3 includes a lower large-diameter cavity section 301 and an upper small-diameter cavity section 302. The cavity wall of the upper small-diameter cavity section 302 is slidably fitted with the smooth rod, and is used to straighten the packing block 4 inserted into the packing box with the smooth rod as the center. The cavity wall of the upper small-diameter cavity section 302 constitutes the straightening structure of the third ring 3. The cavity wall of the lower large-diameter cavity section 301 has an internal thread structure 9 for threaded connection with the second ring 2. The lower large-diameter cavity section 301 is also provided with a set screw mounting hole 10. An opening cover plate (not shown in the figure) is also welded to the top of the third ring 3. The opening diameter of the opening cover plate is larger than the outer diameter of the smooth rod, allowing the smooth rod to pass laterally.

[0033] The first, second, and third sets of rings are made of No. 55 carbon steel, which has high structural strength and a certain weight, and can provide a suitable amount of impact force.

[0034] like Figure 1 As shown, the two ends of the second collar 2 are threaded into the interiors of the first and third collars, respectively. Locking structures 7 are provided on the first and third collars to lock them in the circumferential direction, preventing them from unraveling and thus preventing them from being properly aligned. The locking structure 7 is specifically a set screw, which is threaded into the set screw mounting hole 10 of the first and third collars. The structure is simple and easy to use.

[0035] like Figure 2-3As shown, the packing block 4 is a longitudinally extending conical block with an arc-shaped cross-section. The inner diameter of its bottom packing section is larger than the outer diameter of the smooth rod, while the outer diameter is smaller than the inner diameter of the packing box, allowing it to extend into the packing box to pack the packing or belt. A tool is used to punch different positions around the smooth rod, thereby pressing the packing or belt tightly into the packing box. The packing block 4 is a conical block, wider at the top and narrower at the bottom. This design increases the structural strength of the packing block 4 and also increases the connection area between the packing block 4 and the bottom of the first collar 1, making the fixed connection between the packing block 4 and the bottom of the first collar 1 more reliable. The upper end of the packing block 4 is welded to the first collar 1, making it less prone to loosening during use and ensuring high reliability.

[0036] When installing packing, first remove the pressure cap of the packing box, put the packing installation tool on the smooth rod, then rotate the second ring 2 counterclockwise so that the longitudinal opening 8 of the second ring 2 is offset from the longitudinal opening 8 of the first and third rings in the circumferential direction. Put the anti-loosening sleeve of the packing installation tool on the smooth rod, then tighten the set screw. Then hold the operating handle 5 with both hands and slide the tool up and down along the smooth rod to use the impact force to press the packing or belt into the packing box.

[0037] This utility model's packing installation tool eliminates the need for screwdrivers, hammers, and other tools when adding packing to pumping units. It allows for quick and efficient insertion of packing into the packing box cavity, preventing finger injuries and ensuring safe operation. It also avoids damage to the polished rod, packing, and the threads of the packing box cavity during packing installation. Easy to disassemble and install, it significantly shortens the packing installation time, reduces the impact of packing installation on oil well production, and alleviates the labor intensity of employees, making it suitable for widespread application.

[0038] Of course, this utility model is not limited to the embodiments described above.

[0039] For example, in another embodiment, the packing installation tool includes a threaded upper collar and a lower collar, with only two collars. Each collar has a longitudinal opening and a straightening structure. The bottom of the lower collar has a filling block. When the longitudinal openings of the two collars are staggered in the circumferential direction, the straightening structures of the two collars are positioned relative to each other to straighten the tool along the axial direction of the guide rod. The straightening structure can be a straightening block set inside the collar or the inner wall surface of the collar.

[0040] For example, in another embodiment, the first and second collars and the second and third collars are connected by threads in the same direction. Operating handles are provided on the first and third collars respectively. After the tool is placed on the guide rod, the operating handle of the first collar is rotated to offset the openings of the first and second collars, and the operating handle of the third collar is rotated to offset the openings of the second and third collars.

[0041] For example, in another embodiment, a straightening block is provided inside the first ring, and the inner surface of the straightening block is arc-shaped to fit the optical rod. The straightening block constitutes the straightening structure of the first ring.

[0042] For example, in another embodiment, the inner wall of the second collar slides with the smooth rod, and the inner wall of the second collar directly constitutes the straightening structure of the second collar. Alternatively, an arc-shaped boss is provided on the inner wall of the second collar, and the inner surface of the arc-shaped boss fits against the smooth rod, and the arc-shaped boss constitutes the straightening structure of the second collar.

[0043] For example, in another embodiment, a straightening block is provided inside the third ring, and the inner surface of the straightening block is arc-shaped to fit the optical rod. The straightening block constitutes the straightening structure of the third ring.

[0044] For example, in another embodiment, there is only one straightening block, which extends directly from the upper end to the lower end of the second collar along the axial direction. Alternatively, three or more straightening blocks may be provided, all spaced apart along the axial direction of the second collar.

[0045] For example, in another embodiment, the locking structure may not be provided on the first and third rings.

[0046] For example, in another embodiment, the packing block is a longitudinally extending arc-shaped block with an inner diameter larger than the outer diameter of the smooth rod and an outer diameter smaller than the inner diameter of the packing box, so as to extend into the packing box to pack packing or belt.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A packing installation tool, characterized in that: The system includes a first collar and a second collar threaded to the upper end of the first collar. The bottom of the first collar has a packing block for inserting into the packing box to press packing. The first and second collars each have a longitudinal opening for the smooth rod to pass laterally and a straightening structure. When the longitudinal openings of the first and second collars are staggered in the circumferential direction, the straightening structures of the two collars are positioned opposite each other to straighten the tool along the axial direction of the smooth rod. One collar has an operating handle. A third collar is threaded to the upper part of the second collar. The third collar has a longitudinal opening for the smooth rod to pass laterally and a straightening structure. When the longitudinal openings of the second and third collars are staggered in the circumferential direction... The second and third collars are positioned opposite each other to straighten the tool along the axial direction of the guide rod. The second collar is equipped with the operating handle. The first and second collars, as well as the second and third collars, are connected by reverse threads. The inner cavity of the first collar includes a lower small-diameter cavity section and an upper large-diameter cavity section. The cavity wall of the lower small-diameter cavity section slides with the guide rod to form the straightening structure of the first collar. The inner cavity of the third collar includes a lower large-diameter cavity section and an upper small-diameter cavity section. The cavity wall of the upper small-diameter cavity section slides with the guide rod to form the straightening structure of the third collar. The angle between the cavity walls of the lower and upper small-diameter cavity sections around the guide rod is greater than 180°.

2. The packing installation tool according to claim 1, characterized in that: The upper large-diameter cavity section of the first ring is threadedly connected to the second ring.

3. The packing installation tool according to claim 2, characterized in that: The inner circumferential surface of the second ring is provided with a straightening block extending along its axial direction. The inner surface of the straightening block is arc-shaped to fit the optical rod. The straightening block constitutes the straightening structure of the second ring.

4. The packing installation tool according to claim 2, characterized in that: The lower large-diameter cavity section of the third ring is threadedly connected to the second ring.

5. The packing installation tool according to claim 3, characterized in that: The straightening blocks are provided in two or more parts and are arranged at intervals along the axial direction of the second ring.

6. The packing installation tool according to claim 3, characterized in that: The straightening block is a wear-resistant rubber block.

7. The packing installation tool according to claim 4, characterized in that: The two ends of the second ring are threaded into the inside of the first and third rings, respectively. The first and third rings are respectively provided with locking structures to lock the first and second rings and the second and third rings in the circumferential direction.

8. The packing installation tool according to claim 7, characterized in that: The locking structure is a set screw.

9. The packing installation tool according to claim 1, characterized in that: The filling block is a longitudinally extending conical block, and the upper end of the filling block is fixedly connected to the first collar.

10. The packing installation tool according to claim 9, characterized in that: The cross-section of the filling block is arc-shaped.

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