Packer and its processing device

Abstract

The application relates to a packer and a processing device thereof, the packer comprising a skeleton fixing ring and a skeleton support, the skeleton support comprising a plurality of steel sheets stacked in the inner wall of the skeleton fixing ring, and the processing device comprising a barrel provided with a containing cavity for containing the skeleton fixing ring and the skeleton support; a driving assembly comprising a pull rod, one end of the pull rod extending into the containing cavity and being in sliding connection with the barrel; and a tensioning assembly arranged in the containing cavity, the tensioning assembly comprising a tensioning sleeve in transmission connection with the pull rod so as to tightly hold the skeleton support. Through the processing device, on one hand, the plurality of steel sheets can be uniformly arranged, and on the other hand, the tensioning sleeve can continuously hold the skeleton support during welding, so that the displacement of the steel sheets can be avoided to cause uneven welding, welding quality and efficiency can be improved, and the pressure resistance of the packer can be ensured.

Description

Technical Field

[0001] This application relates to the field of coiled tubing tooling technology, and in particular to a packer and its processing apparatus. Background Technology

[0002] In the oil and gas extraction process, which involves construction techniques such as fracturing, acidizing, leak detection, and water injection, expansion packers are widely used due to their ease of setting and releasing. However, most expansion packers have structures with wire mesh or fiber skeletons, which have drawbacks such as low pressure resistance and low temperature resistance.

[0003] In related technologies, in order to improve the pressure resistance and high temperature resistance of packers, some expansion packers include an outer rubber cylinder and an inner rubber cylinder, with an expandable and deformable layer of steel sheets sandwiched between the outer and inner rubber cylinders. However, since the layered steel sheets are arranged manually, the steel sheets are not evenly arranged. During the welding process, the steel sheets are not supported, which can easily lead to uneven welding at the ends of the steel sheets and affect the working performance of the packer. Utility Model Content

[0004] This application provides a packer and its processing apparatus to solve the technical problem that existing packers use manual arrangement of stacked steel sheets, resulting in uneven steel sheet arrangement and lack of support during welding, which easily leads to uneven welding at the ends of the steel sheets and affects the working performance of the packer.

[0005] In a first aspect, this application provides a processing apparatus for a packer, the packer comprising a skeleton fixing ring and a skeleton support member, the skeleton support member comprising a plurality of steel sheets stacked and arranged on the inner wall of the skeleton fixing ring, the processing apparatus comprising:

[0006] The cylindrical body is provided with a receiving cavity for accommodating the skeleton fixing ring and the skeleton support member;

[0007] A drive assembly includes a pull rod, one end of which extends into the receiving cavity and is slidably connected to the cylinder.

[0008] An expansion assembly is disposed in the accommodating cavity. The expansion assembly includes an expansion sleeve, which is connected to the pull rod to tighten the frame support.

[0009] In one possible implementation, the tensioning assembly further includes a tensioning cone sleeved around the periphery of the pull rod. The tensioning cone has a first inclined surface on the side facing away from the pull rod, and the tensioning sleeve has a second inclined surface on the side facing the pull rod that slides in cooperation with the first inclined surface.

[0010] In one possible implementation, the tensioning assembly further includes a limiting member sleeved around the periphery of the pull rod;

[0011] The inner wall of the cylinder is provided with a first step, the side of the limiting member facing the cylinder abuts against the first step, and the side of the limiting member facing the expansion sleeve abuts against the side of the expansion sleeve facing the first step.

[0012] The pull rod is provided with a boss on its periphery, and the side of the expansion cone away from the limiting member abuts against the boss.

[0013] In one possible implementation, the expansion sleeve includes a plurality of expansion flaps, which are spaced apart along the circumferential direction of the pull rod.

[0014] In one possible implementation, the tensioning assembly includes an elastic retaining ring, and the side of the tensioning flap opposite to the pull rod is provided with a groove, in which the elastic retaining ring is embedded.

[0015] In one possible implementation, the drive assembly further includes a drive member that is tractively connected to one end of the pull rod away from the receiving cavity to drive the pull rod to slide along the axial direction of the cylinder.

[0016] In one possible implementation, the driving element is a nut, which is sleeved on the end of the pull rod away from the receiving cavity and threadedly connected to the pull rod.

[0017] Secondly, this application provides a packer, including a skeleton fixing ring and a skeleton support member, wherein the packer is manufactured by the processing device described above.

[0018] In one possible implementation, the packer further includes an outer rubber tube and an inner rubber tube, with the skeleton fixing ring and skeleton support disposed on the outer periphery of the inner rubber tube; the outer rubber tube is sleeved on the outer side wall of the skeleton support, and the end of the outer rubber tube is fixedly connected to the end of the skeleton fixing ring.

[0019] In one possible implementation, the packer further includes an end ring and a locking ring, the end ring being sleeved on the outer periphery of the locking ring and connected to the locking ring by a thread;

[0020] The end ring is sleeved on the outer periphery of the inner rubber cylinder and is snapped into connection with the inner rubber cylinder;

[0021] One end of the end ring is fixedly connected to the end of the skeleton fixing ring away from the outer rubber cylinder, and the side of the inner rubber cylinder away from the inner wall of the end ring is slidably connected to the side of the locking ring facing the inner wall of the end ring.

[0022] The technical solutions provided in this application have the following advantages compared with the prior art:

[0023] The packer and its processing apparatus provided in this application include a cylinder, a drive assembly, and an expansion assembly. First, a skeleton fixing ring is placed and fixed in the receiving cavity of the cylinder, with the axis of the skeleton fixing ring coaxial with the axis of the cylinder. Then, multiple steel sheets are stacked sequentially, with one end of each steel sheet abutting against the inner wall of the skeleton fixing ring, ensuring the steel sheets are neatly arranged and forming a skeleton support. Next, a pull rod is pulled, moving along the axis of the cylinder and causing the expansion sleeve to displace radially within the cylinder. The outer diameter of the expansion sleeve increases, generating radial pressure on the skeleton support, thus clamping the skeleton support and preventing displacement of the steel sheets. The ends of the multiple steel sheets are neatly arranged on the inner wall of the skeleton fixing ring. The cylinder is then removed, facilitating welding of the joint area between the steel sheets and the fixing ring. The aforementioned processing device facilitates the uniform arrangement of multiple steel sheets. Furthermore, the expansion sleeve continuously holds the frame support during the welding process, preventing steel sheet displacement and uneven welding. This improves welding quality and efficiency, and ensures the pressure resistance of the packer. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0027] Figure 1 A schematic diagram of a packer processing apparatus provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 A schematic diagram showing the working state of the processing device;

[0029] Figures 3-5 for Figure 1 The diagram shows the working process of the processing device;

[0030] Figure 6 This is a schematic diagram of the structure of the first welding component provided in an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the packer provided in an embodiment of this application;

[0032] Figure 8 for Figure 7 The diagram shows a partial structural schematic of the packer;

[0033] Figure 9 for Figure 7 A partial three-dimensional view of the packer structure is shown;

[0034] Figure 10 for Figure 7 The diagram shows the structure of the inner rubber cylinder of the packer.

[0035] Explanation of reference numerals in the attached figures:

[0036] X: Axial direction of the cylinder; Y: Radial direction of the cylinder; A: Joint area;

[0037] 1. Processing equipment;

[0038] 10. Cylinder; 11. Receiving cavity; 12. First step; 13. Second step; 20. Drive assembly; 21. Tie rod; 211. Boss; 22. Nut; 30. Expansion assembly; 31. Expansion sleeve; 311. Expansion flap; 312. Second inclined surface; 313. Groove; 32. Expansion cone; 321. First inclined surface; 33. Limiting component; 331. First limiting plate; 332. Limiting cylinder; 34. Elastic retaining ring;

[0039] 2. Packer;

[0040] 40. Frame fixing ring; 50. Frame support; 51. Steel sheet; 60. Outer rubber sleeve; 70. Inner rubber sleeve; 71. Protrusion; 80. End ring; 90. Locking ring. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0043] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0044] In related technologies, in order to improve the pressure resistance and high temperature resistance of packers, some expansion packers include an outer rubber cylinder and an inner rubber cylinder, with an expandable and deformable layer of steel sheets sandwiched between the outer and inner rubber cylinders. However, since the layered steel sheets are arranged manually, the steel sheets are not evenly arranged. During the welding process, the steel sheets are not supported, which can easily lead to uneven welding at the ends of the steel sheets and affect the working performance of the packer.

[0045] To address the problems of uneven steel sheet arrangement in existing packers, where stacked steel sheets are manually arranged, lack of support during welding, and uneven weld ends that affect packer performance, this application provides a packer and its processing device. A tensioning sleeve, driven by a pull rod, applies radial pressure to the frame support, thereby clamping the frame support and preventing steel sheet displacement. This facilitates even arrangement of multiple steel sheets and, because the tensioning sleeve continuously clamps the frame support during welding, prevents steel sheet displacement and uneven welds, thus improving welding quality and ensuring the packer's pressure resistance.

[0046] like Figure 1As shown, this application embodiment provides a processing device 1 for a packer 2. The packer 2 includes a skeleton fixing ring 40 and a skeleton support member 50. The skeleton support member 50 includes a plurality of steel sheets 51 stacked on the inner wall of the skeleton fixing ring 40. The processing device 1 includes a cylinder 10, a drive assembly 20, and a tensioning assembly 30. The cylinder 10 is provided with a receiving cavity 11 for accommodating the skeleton fixing ring 40 and the skeleton support member 50. The drive assembly 20 includes a pull rod 21, one end of which extends into the receiving cavity 11 and is slidably connected to the cylinder 10. The tensioning assembly 30 is disposed in the receiving cavity 11 and includes a tensioning sleeve 31. The tensioning sleeve 31 is throttlely connected to the pull rod 21 so that the tensioning sleeve 31 grips the skeleton support member 50.

[0047] One end of the pull rod 21 extends into the receiving cavity 11 and is slidably connected to the cylinder 10. Specifically, one end of the cylinder 10 is provided with an opening and the other end is provided with a through hole. One end of the pull rod 21 can extend into the receiving cavity 11 through the through hole of the cylinder 10. The outer wall of the pull rod 21 is slidably connected to the through hole of the cylinder 10. With this configuration, the pull rod 21 can reciprocate along the axial direction of the cylinder 10.

[0048] For ease of explanation and understanding, the axial direction of the cylinder 10 can be the X-direction shown in the figure, and the radial direction of the cylinder 10 can be the Y-direction shown in the figure. It can be understood that, firstly, the skeleton fixing ring 40 is placed and fixed in the receiving cavity 11 of the cylinder 10, at which point the axis of the skeleton fixing ring 40 is coaxial with the axis of the cylinder 10. Then, multiple steel plates 51 are stacked sequentially, with one end of each steel plate 51 abutting against the inner wall of the skeleton fixing ring 40 along its length, so that the multiple steel plates 51 are neatly arranged and form the skeleton support member 50. Next, the pull rod 21 is pulled, and the pull rod 21 moves along the axial direction of the cylinder 10, causing the expansion sleeve 31 to displace in the radial direction of the cylinder 10. The outer diameter of the expansion sleeve 31 increases, causing the expansion sleeve 31 to exert a radial compressive force on the skeleton support member 50, thereby tightening the skeleton support member 50 and preventing the steel plates 51 from shifting. The ends of the multiple steel plates 51 are neatly arranged on the inner wall of the skeleton fixing ring 40. At this point, removing the cylinder 10 facilitates welding the joint area A between the steel sheet 51 and the fixing ring, such as... Figure 5 As shown. The above-mentioned processing device 1 facilitates the uniform arrangement of multiple steel sheets 51. On the other hand, since the expansion sleeve 31 can continuously hold the skeleton support 50 during the welding process, it can prevent the steel sheets 51 from shifting and causing uneven welding. This can improve the welding quality, increase the welding efficiency, and ensure the pressure resistance of the packer 2.

[0049] In some embodiments, the tensioning assembly 30 further includes a tensioning cone 32, which is sleeved around the periphery of the pull rod 21. A first inclined surface 321 is provided on the side of the tensioning cone 32 facing away from the pull rod 21, and a second inclined surface 312 is provided on the side of the tensioning sleeve 31 facing the pull rod 21, which slides in cooperation with the first inclined surface 321. Figure 2 As shown, pulling the lever 21 moves the lever 21 to the left relative to the cylinder 10, causing the expansion cone 32 to move to the left. The first inclined surface 321 of the expansion cone 32 exerts a compressive force on the second inclined surface 312 of the expansion sleeve 31, causing the expansion sleeve 31 to displace in the radial direction of the cylinder 10 and move away from the lever 21. This exerts a radial compressive force on the skeleton support 50, tightens the skeleton support 50, and prevents the steel sheet 51 from shifting during welding, thereby improving the welding quality and ensuring the pressure resistance of the packer 2.

[0050] In some embodiments, the tensioning assembly 30 further includes a limiting member 33, which is sleeved on the periphery of the pull rod 21; the inner wall of the cylinder 10 is provided with a first step 12, the side of the limiting member 33 facing the cylinder 10 abuts against the first step 12, and the side of the limiting member 33 facing the tensioning sleeve 31 abuts against the side of the tensioning sleeve 31 facing the first step 12; the periphery of the pull rod 21 is provided with a boss 211, and the side of the tensioning cone 32 away from the limiting member 33 abuts against the boss 211. Understandably, since the side of the expansion cone 32 away from the limiting member 33 abuts against the boss 211, when the pull rod 21 is forced to move to the left, the boss 211 can drive the expansion cone 32 to move to the left synchronously. Since the side of the limiting member 33 facing the cylinder 10 abuts against the first step 12, and the side of the limiting member 33 facing the expansion sleeve 31 abuts against the side of the expansion sleeve 31 facing the first step 12, the limiting member 33 restricts the distance between the expansion sleeve 31 and the first step 12 in the axial direction of the cylinder 10. Therefore, with the cooperation of the first inclined surface 321 and the second inclined surface 312, the expansion sleeve 31 can move along the radial direction of the cylinder 10, so that the expansion sleeve 31 generates radial extrusion force on the skeleton support member 50, thereby tightening the skeleton support member 50.

[0051] In one example, the limiting member 33 includes a first limiting plate 331 and a limiting cylinder 332 connected together. The first limiting plate 331 and the limiting cylinder 332 can be integrally formed. The first limiting plate 331 has a through hole at its center for the pull rod 21 to pass through. The side of the first limiting plate 331 away from the limiting cylinder 332 is abutted and connected to the first step 12. The side of the limiting cylinder 332 away from the first limiting plate 331 is abutted and connected to the side of the expansion sleeve 31 facing the first step 12, thereby limiting the distance between the expansion sleeve 31 and the first step 12 in the axial direction of the cylinder 10.

[0052] In another example not shown in the figure, the limiting member 33 includes a second limiting plate and a limiting rod connected together. The second limiting plate and the limiting rod can be integrally formed. Multiple limiting rods can be provided, and multiple limiting rods are spaced apart along the edge of the second limiting plate. The second limiting plate has a through hole at its center for the pull rod 21 to pass through. The side of the second limiting plate away from the limiting rod is abutted against the first step 12. The end of the limiting rod away from the second limiting plate is abutted against the side of the expansion sleeve 31 facing the first step 12, thereby limiting the distance between the expansion sleeve 31 and the first step 12 in the axial direction of the cylinder 10.

[0053] In some embodiments, the inner wall of the cylinder 10 is provided with a first thread, and the skeleton fixing ring 40 is provided with a second thread that mates with the first thread. By rotating and tightening the skeleton fixing ring 40 onto the cylinder 10, the axis of the skeleton fixing ring 40 is coaxial with the axis of the cylinder 10, thereby achieving the centering, positioning and fixed connection between the cylinder 10 and the skeleton fixing ring 40.

[0054] Optionally, the inner wall of the cylinder 10 is provided with a second step 13, and the side of the skeleton fixing ring 40 facing the cylinder 10 abuts against the second step 13, and the second step 13 plays a limiting role for the skeleton fixing ring 40.

[0055] In some embodiments, the expansion sleeve 31 includes a plurality of expansion flaps 311, which are spaced apart along the circumferential direction of the pull rod 21. By configuring the expansion sleeve 31 as a segmented component composed of a plurality of expansion flaps 311, it can both hold and fix the skeleton support member 50, and also facilitate the removal of the expansion sleeve 31 after welding.

[0056] Furthermore, the tensioning assembly 30 includes an elastic retaining ring 34, and a groove 313 is provided on the side of the tensioning flap 311 away from the pull rod 21. The elastic retaining ring 34 is embedded in the groove 313 to fix the flap component of the tensioning sleeve 31 so that the tensioning flap 311 fits against the tensioning cone 32 under the elastic force of the elastic retaining ring 34.

[0057] In some embodiments, the drive assembly 20 further includes a drive member, the power output end of which is tractively connected to the end of the pull rod 21 away from the receiving cavity 11, so as to drive the pull rod 21 to slide along the axial direction of the cylinder 10. The drive member can be configured as an existing linear actuator such as a cylinder, and the power output end of the drive member is tractively connected to the end of the pull rod 21 away from the receiving cavity 11, enabling the pull rod 21 to slide along the axial direction of the cylinder 10.

[0058] In one example, the driving component is a nut 22, which is sleeved on the end of the pull rod 21 away from the receiving cavity 11 and threadedly connected to the pull rod 21. Specifically, one end of the nut 22 abuts against the outer wall of the cylinder 10, and the inner side wall of the nut 22 is provided with a third thread. The end of the pull rod 21 away from the receiving cavity 11 is provided with a fourth thread that matches the third thread. When the nut 22 is rotated, the pull rod 21 can slide along the axial direction of the cylinder 10 under the cooperation of the third thread and the fourth thread.

[0059] The working process of the processing device 1 for the packer 2 provided in this embodiment is as follows:

[0060] Step 1, such as Figure 3 As shown, the skeleton fixing ring 40 is placed and fixed in the receiving cavity 11 of the cylinder 10, at which time the axis of the skeleton fixing ring 40 is coaxial with the axis of the cylinder 10.

[0061] Step Two, as follows Figure 4 As shown, multiple steel sheets 51 are stacked in sequence, with one end of each steel sheet 51 abutting against the inner wall of the frame fixing ring 40 in the longitudinal direction, so that the multiple steel sheets 51 are arranged neatly and form a frame support 50.

[0062] Step 3: Rotate nut 22 to move pull rod 21 to the left. Pull rod 21 drives expansion sleeve 31 to generate radial displacement of cylinder 10, so that expansion sleeve 31 generates radial extrusion force on skeleton support 50, thereby clamping skeleton support 50.

[0063] Step 4: Remove the nut 22, cylinder 10 and limiting component 33 in sequence, and move the pull rod 21 to the right a certain distance to facilitate welding the joint area between one end of the frame support 50 and the fixing ring, as shown in Figure 5.

[0064] Step 5, as follows Figure 6 As shown, after welding is completed, the first welded component is obtained, and the expansion cone 32 and expansion sleeve 31 are removed in sequence.

[0065] Step 6: Turn the first welding component around and, following the steps above, weld the other end of the frame support 50 to the joint area A of the other fixing ring to obtain the second welding component.

[0066] like Figure 7 As shown in the figure, this application embodiment also provides a packer 2, including a skeleton fixing ring 40 and a skeleton support member 50. The packer 2 is manufactured by the processing device 1 described above. The packer 2 manufactured by the processing device 1 can avoid the steel sheet 51 from shifting and causing uneven welding, thus improving the welding quality and ensuring the pressure resistance of the packer 2.

[0067] It should be noted that there may be two skeleton fixing rings 40, with the two skeleton fixing rings 40 respectively located at both ends of the skeleton support 50.

[0068] In some embodiments, such as Figure 7 As shown, the packer 2 also includes an outer rubber cylinder 60 and an inner rubber cylinder 70. A frame fixing ring 40 and a frame support 50 are disposed on the outer periphery of the inner rubber cylinder 70. The outer rubber cylinder 60 is sleeved on the outer side wall of the frame support 50, and the end of the outer rubber cylinder 60 is fixedly connected to the end of the frame fixing ring 40. Figure 8 and Figure 9 As shown, the stacked steel sheets 51 form a skeleton support 50, which supports and bears pressure on the rubber cylinder, improving the structural strength of the packer 2 and thus effectively improving the high temperature and high pressure resistance of the inner and outer rubber cylinders 60. Conventional packers 2 can usually only withstand temperatures up to 120°C and pressures up to 70MPa. The packer 2 provided in this embodiment, by setting the skeleton support 50 between the inner rubber cylinder 70 and the outer rubber cylinder 60, can withstand temperatures up to 177°C and pressures up to 70MPa.

[0069] Optionally, such as Figure 7 As shown, the contact point between the skeleton fixing ring 40 and the outer rubber cylinder 60 is designed with an arc structure, which can improve the pressure-bearing capacity of the outer rubber cylinder 60. After the skeleton support 50 and the skeleton fixing ring 40 are welded together, rubber is wrapped around the outer periphery of the skeleton support 50, and then it is fixed with a mold for vulcanization to obtain the outer rubber cylinder 60, wherein the inner diameter of the mold is larger than the outer diameter of the skeleton fixing ring 40. The vulcanized outer rubber cylinder 60 is then machined to the designed outer diameter.

[0070] In some embodiments, such as Figure 7 and Figure 10 As shown, the packer 2 also includes an end ring 80 and a locking ring 90. The end ring 80 is sleeved on the outer periphery of the locking ring 90 and is threadedly connected to the locking ring 90. The end ring 80 is sleeved on the outer periphery of the inner rubber cylinder 70 and is snapped into the inner rubber cylinder 70. Specifically, the inner sidewall of the end ring 80 is provided with a groove, and the outer sidewall of the inner rubber cylinder 70 is provided with a protrusion 71 that connects to the groove. One end of the end ring 80 is fixedly connected to the end of the skeleton fixing ring 40 away from the outer rubber cylinder 60. The side of the inner rubber cylinder 70 away from the inner wall of the end ring 80 is slidably connected to the side of the locking ring 90 facing the inner wall of the end ring 80. Specifically, the side of the inner rubber cylinder 70 away from the inner wall of the end ring 80 is provided with a third inclined surface, and the side of the locking ring 90 facing the inner wall of the end ring 80 is provided with a fourth inclined surface that slides with the third inclined surface. Thus, after the skeleton support 50 and the skeleton fixing ring 40 are welded together, the inner rubber cylinder 70, the end ring 80 and the locking ring 90 are installed on the second welded component in sequence. With the cooperation of the third and fourth inclined surfaces, the inner rubber cylinder 70 and the end ring 80 can be sealed together.

[0071] Furthermore, there are two end rings 80 and two locking rings 90 respectively. The two end rings 80 are connected to the two skeleton fixing rings 40 in a one-to-one correspondence, and the two locking rings 90 are connected to the two end rings 80 in a one-to-one correspondence.

[0072] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a specific order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0073] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0074] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A packer processing apparatus, characterized in that, The packer includes a skeleton fixing ring and a skeleton support member. The skeleton support member includes multiple steel sheets stacked on the inner wall of the skeleton fixing ring. The processing device includes: The cylindrical body is provided with a receiving cavity for accommodating the skeleton fixing ring and the skeleton support member; A drive assembly includes a pull rod, one end of which extends into the receiving cavity and is slidably connected to the cylinder. An expansion assembly is disposed in the accommodating cavity. The expansion assembly includes an expansion sleeve, which is connected to the pull rod to tighten the frame support.

2. The packer processing apparatus according to claim 1, characterized in that, The tensioning assembly further includes a tensioning cone, which is sleeved around the periphery of the pull rod. The side of the tensioning cone facing away from the pull rod has a first inclined surface, and the side of the tensioning sleeve facing the pull rod has a second inclined surface that slides in cooperation with the first inclined surface.

3. The packer processing apparatus according to claim 2, characterized in that, The tensioning assembly further includes a limiting member, which is sleeved on the periphery of the pull rod; The inner wall of the cylinder is provided with a first step, the side of the limiting member facing the cylinder abuts against the first step, and the side of the limiting member facing the expansion sleeve abuts against the side of the expansion sleeve facing the first step. The pull rod is provided with a boss on its periphery, and the side of the expansion cone away from the limiting member abuts against the boss.

4. The packer processing apparatus according to claim 1, characterized in that, The expansion sleeve includes multiple expansion flaps, which are spaced apart along the circumferential direction of the pull rod.

5. The packer processing apparatus according to claim 4, characterized in that, The tensioning assembly includes an elastic retaining ring, and the side of the tensioning flap opposite to the pull rod is provided with a groove, in which the elastic retaining ring is embedded.

6. The packer processing apparatus according to claim 1, characterized in that, The drive assembly further includes a drive member, which is tractively connected to the end of the pull rod away from the receiving cavity, so as to drive the pull rod to slide along the axial direction of the cylinder.

7. The packer processing apparatus according to claim 6, characterized in that, The driving component is a nut, which is sleeved on the end of the pull rod away from the receiving cavity and is threadedly connected to the pull rod.

8. A packer, characterized in that, It includes a skeleton fixing ring and a skeleton support member, and the packer is manufactured by the processing device as described in any one of claims 1 to 7.

9. The packer according to claim 8, characterized in that, The packer also includes an outer rubber tube and an inner rubber tube. The skeleton fixing ring and the skeleton support are disposed on the outer periphery of the inner rubber tube. The outer rubber tube is sleeved on the outer side wall of the skeleton support, and the end of the outer rubber tube is fixedly connected to the end of the skeleton fixing ring.

10. The packer according to claim 9, characterized in that, The packer also includes an end ring and a locking ring, wherein the end ring is sleeved on the outer periphery of the locking ring and is threadedly connected to the locking ring; The end ring is sleeved on the outer periphery of the inner rubber cylinder and is snapped into connection with the inner rubber cylinder; One end of the end ring is fixedly connected to the end of the skeleton fixing ring away from the outer rubber cylinder, and the side of the inner rubber cylinder away from the inner wall of the end ring is slidably connected to the side of the locking ring facing the inner wall of the end ring.

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