A cavity seal sleeve dismounting device

Abstract

The utility model discloses a cavity sealing sleeve dismounting device relates to well drilling engineering technical field, include: the taper sleeve is equipped with the key groove of the sealing sleeve of being used for with the key groove of the sealing sleeve to be dismounted and is matched with the wedge clamping block, and the wedge clamping block can be moved along the radial direction to the taper sleeve relatively, to realize the clamping and disengaging of wedge clamping block and sealing sleeve, the taper, its one end is detachably connected with the taper sleeve, when the taper moves along the axial, to the taper sleeve's small end, and the taper drives wedge clamping block and moves along the radial outward, the ram is established in the other end of the taper, and the ram is equipped with the impact surface to the end of being away from the taper sleeve, and the ram outer sliding cover is equipped with the rammer for impacting the impact surface. Its wedge clamping block of taper sleeve and the key groove of the sealing sleeve to be dismounted and are matched with, and through the rammer and impact the impact surface of ram, provide the sealing sleeve with the axial outward force, avoid the problem that the sealing sleeve is jammed even damaged caused by uneven stress, and simple structure, convenient operation, cost lower.

Description

Technical Field

[0001] This utility model relates to the field of drilling engineering technology, and more specifically, to a cavity sealing sleeve disassembly device. Background Technology

[0002] Maintenance of drilling control equipment involves the replacement and repair of seals such as sealing sleeves inside the cavities of hydraulic cylinders and air cylinders. Existing methods for disassembling and assembling sealing sleeves are mostly manual and relatively primitive, requiring multiple people to work together to strike the sealing sleeve to be disassembled or installed. During operation, there are problems such as the force direction being at an angle to the axial direction of the sealing sleeve and uneven force in all directions, which can easily cause the sealing sleeve to jam or even be damaged. A small number of hydraulic disassembly tools are used for disassembly and assembly, but the disassembly and assembly process is cumbersome and inconvenient to operate and use.

[0003] In summary, how to conveniently and reliably disassemble the sealing sleeve inside the cavity is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a cavity sealing sleeve disassembly device, which uses the wedge-shaped clamping block of the conical sleeve to engage with the keyway of the sealing sleeve to be disassembled, and uses the impact surface of the impact rod to provide an axial outward force to the sealing sleeve by the impact of the hammer, thereby avoiding the problem of the sealing sleeve jamming or even being damaged due to uneven force. Moreover, it has a simple structure, is easy to operate, and has a low cost.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A cavity sealing sleeve disassembly device, comprising:

[0007] A tapered sleeve has a wedge-shaped clamping block on its outer periphery for engaging with the keyway of a sealing sleeve to be disassembled. The wedge-shaped clamping block can move radially relative to the tapered sleeve to achieve clamping and disengagement between the wedge-shaped clamping block and the sealing sleeve.

[0008] A cone, one end of which is detachably connected to the cone sleeve, when the cone moves axially toward the small end of the cone sleeve, the cone drives the wedge-shaped clamping block to move radially outward;

[0009] A striking rod is provided at the other end of the cone, and the end of the striking rod that is away from the cone sleeve has an impact surface. A hammer for impacting the impact surface is slidably sleeved on the outside of the striking rod.

[0010] Preferably, the outer periphery of the tapered sleeve is provided with a mounting hole, and the wedge-shaped clamping block includes a mating part for fitting against the outer periphery of the tapered body and a snap-fit ​​part for engaging with the keyway. The size of the mating part is larger than the size of the mounting hole to prevent the wedge-shaped clamping block from detaching from the mounting hole.

[0011] Preferably, the circumferential dimension of the mating portion of the wedge-shaped clamping block is greater than the circumferential dimension of the mounting hole of the cone sleeve, and a return spring is provided between the outer circumferential surface of the mating portion and the inner circumferential surface of the cone sleeve. The return spring is used to drive the wedge-shaped clamping block to automatically return to its original position after the cone body disengages from the mating portion.

[0012] Preferably, the wedge-shaped clamping blocks are all the same size and are evenly arranged along the circumference of the conical sleeve.

[0013] Preferably, the cone is provided with an external conical wire, and the small end of the conical sleeve is provided with a conical sleeve female wire for engaging with the external conical wire.

[0014] Preferably, the cone is provided with a cone female wire, and one end of the striking rod is provided with a striking rod external wire for cooperating with the cone female wire.

[0015] Preferably, the cone has a hammer limiting plate at one end relative to the striking rod. The hammer limiting plate protrudes from the outer periphery of the cone and is used to prevent the hammer from striking the cone in the opposite direction.

[0016] Preferably, the hammer limiting plate has a buffer pad at one end closer to the hammer, and the buffer pad includes a sponge pad, a rubber pad, and a silicone pad.

[0017] Preferably, the impact surface includes an annular impact surface protruding from the outer peripheral surface of the impact bar, and the impact hammer includes a columnar impact hammer with an annular impact portion at at least one end, wherein the outer diameter of the annular impact portion is larger than the outer diameter of the annular impact surface.

[0018] Preferably, both ends of the cylindrical hammer are provided with the annular impact portion, and the size of the annular impact portion at both ends is the same.

[0019] The cavity sealing sleeve disassembly device provided by this utility model utilizes the wedge-shaped clamping block of the conical sleeve to engage with the keyway of the sealing sleeve to be disassembled, so that the conical sleeve and the sealing sleeve to be disassembled are tightly connected. Then, by striking the impact surface of the impact rod with a hammer, an axial outward force is applied to the sealing sleeve, thereby removing the sealing sleeve from the cavity. Compared with the existing manual disassembly and assembly methods, it ensures that the force applied to the sealing sleeve is basically axial outward along the sealing sleeve, avoiding the problem of the sealing sleeve jamming or even being damaged due to uneven force. At the same time, the disassembly device has a simple structure, is easy to operate, and has a low cost. It can complete the disassembly of the sealing sleeve in the cavity in a time-saving and labor-saving manner, and effectively protect the cavity and sealing sleeve structure. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 A schematic diagram of a specific embodiment of the cavity sealing sleeve disassembly device provided by this utility model;

[0022] Figure 2 An exploded schematic diagram of the cavity sealing sleeve disassembly device;

[0023] Figure 3 This is a schematic diagram of the wedge-shaped clamping block.

[0024] Figure 4 This is a schematic diagram showing the assembly of the cavity sealing sleeve removal device and the sealing sleeve to be removed.

[0025] Figures 1-4 middle:

[0026] 01-Sealing sleeve; 10-Disassembly device; 1-Conical sleeve; 11-Inner conical surface of conical sleeve; 12-Mounting hole; 13-Conical sleeve female thread; 2-Conical body; 21-Conical female thread; 22-Conical surface of conical body; 23-Outer thread of conical body; 3-Wedge clamping block; 31-Matching part; 32-Snap-fit ​​part; 4-Strike rod; 41-Impact surface; 42-Outer thread of strike rod; 5-Strike hammer; 51-Annular impact part. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] The core of this utility model is to provide a cavity sealing sleeve disassembly device, which uses the wedge-shaped clamping block of the conical sleeve to engage with the keyway of the sealing sleeve to be disassembled, and uses the impact surface of the impact rod to provide an axial outward force to the sealing sleeve by impacting it with the hammer, thereby avoiding the problem of the sealing sleeve jamming or even being damaged due to uneven force. It is also simple in structure, convenient in operation, and low in cost.

[0029] The cavity sealing sleeve disassembly device provided by this utility model includes:

[0030] The tapered sleeve 1 has a wedge-shaped clamping block 3 on its outer periphery for engaging with the keyway of the sealing sleeve 01 to be disassembled. The wedge-shaped clamping block 3 can move radially relative to the tapered sleeve 1 to achieve clamping and disengagement between the wedge-shaped clamping block 3 and the sealing sleeve 01.

[0031] The cone 2, one end of which is detachably connected to the cone sleeve 1, moves axially toward the small end of the cone sleeve 1. The cone 2 drives the wedge-shaped clamping block 3 to move radially outward.

[0032] A striking rod 4 is located at the other end of the cone 2. The end of the striking rod 4 that is far away from the cone sleeve 1 has an impact surface 41. A hammer 5 for impacting the impact surface 41 is slidably sleeved on the outside of the striking rod 4.

[0033] The conical sleeve 1 can be engaged with the keyway of the sealing sleeve 01 to be disassembled by the wedge clamping block 3, thereby connecting the disassembly device 10 and the sealing sleeve 01 to be disassembled as a whole. Therefore, the impact force of the hammer 5 hitting the impact surface 41 of the impact rod 4 can be transmitted to the sealing sleeve 01 to be disassembled through the impact rod 4, the cone 2, the conical sleeve 1 and the wedge clamping block 3, so that the sealing sleeve 01 is subjected to an axial outward force relatively uniformly in all directions, and finally the sealing sleeve 01 is disassembled from the cavity.

[0034] The specific structure and shape of the wedge-shaped clamping block 3 on the outer periphery of the tapered sleeve 1 are determined according to the structure and shape of the keyway of the sealing sleeve 01 to be disassembled, so that the wedge-shaped clamping block 3 can be effectively engaged with the keyway of the sealing sleeve 01; the circumferential dimensions and quantity of the wedge-shaped clamping block 3 need to be determined according to the outer diameter of the sealing sleeve 01 to be disassembled and the assembly situation, so as to avoid the wedge-shaped clamping block 3 being subjected to excessive force and deformed during the disassembly process;

[0035] For example, in the case of Figure 4 When the sealing sleeve 01 of the blowout preventer hydraulic cylinder of the drilling well control equipment shown is disassembled, the outer diameter of the sealing sleeve 01 to be disassembled can reach 200mm, and part of the length of the sealing sleeve 01 is installed tightly. Therefore, the number of wedge clamping blocks 3 is set to four, so as to meet the disassembly requirements while minimizing the overall weight of the disassembly device 10.

[0036] The cone 2 is used to cooperate with the cone sleeve 1 to control the radial movement of the wedge-shaped clamping block 3. The cone 2 and the cone sleeve 1 are detachably connected, allowing for... Figure 2 As shown, the cone 2 is provided with a cone external thread 23, and the small end of the cone sleeve 1 is provided with a cone sleeve female thread 13 for cooperating with the cone external thread 23. The two are connected by threads. The threaded connection structure is simple and convenient for adjustment and positioning.

[0037] Alternatively, at least one positioning pin hole can be provided at the end of the cone sleeve 1 that is relatively far away from the sealing sleeve 01, and a connecting pin hole corresponding to the positioning pin hole can be provided at the end of the cone body 2 that is relatively far away from the sealing sleeve 01. When the cone body 2 moves into position along the axial direction and the wedge clamping block 3 is locked in the keyway of the sealing sleeve 01, the fixing pin can pass through the connecting pin hole and the positioning pin hole in sequence to connect and fix the cone sleeve 1 and the cone body 2, so as to prevent the two from moving axially relative to each other during the impact disassembly process of the hammer 5.

[0038] When the cone 2 moves axially toward the small end of the cone sleeve 1, the cone 2 drives the wedge-shaped clamping block 3 to move radially outward until the wedge-shaped clamping block 3 reaches its radial position. Figure 1 As shown;

[0039] Conversely, when the sealing sleeve 01 to be disassembled is removed, the control cone 2 moves radially toward the large end of the cone sleeve 1, causing the cone 2 to disengage from the wedge clamping block 3. At this time, the wedge clamping block 3 located above the horizontal plane will move radially inward under its own weight, thereby disengaging from the keyway of the sealing sleeve 01. At this time, lifting the cone sleeve 1 can remove the cone sleeve 1 from the sealing sleeve 01.

[0040] The impact rod 4 is used to cooperate with the hammer 5 to provide an axial outward force to the sealing sleeve 01 to be disassembled. The impact rod 4 can be welded to the cone 2 as an integral structure, or the impact rod 4 and the cone 2 can be connected by common detachable connection methods such as threaded connection or pin connection, so that the impact rod 4 and the cone 2 can be separated when not in use, reducing the overall length of the disassembly device 10 and facilitating the storage and transportation of the disassembly device 10.

[0041] For example, please refer to Figure 2 The cone 2 is provided with a cone female thread 21, and one end of the strike rod 4 is provided with a strike rod external thread 42 for cooperating with the cone female thread 21. The threaded connection structure is simple and easy to disassemble.

[0042] In order to make the impact force evenly distributed in all directions, preferably, the impact surface 41 can be provided as an annular impact surface protruding from the outer peripheral surface of the impact rod 4, and the hammer 5 can be provided as a columnar hammer with an annular impact part 51 at at least one end. The outer diameter of the annular impact part 51 is larger than the outer diameter of the annular impact surface. This can make the impact force relatively uniform in the circumferential direction of the impact rod 4, and can increase the impact stress and increase the axial outward tensile stress on the sealing sleeve 01 while keeping the impact force constant.

[0043] Preferably, to avoid incorrect installation orientation of the hammer 5, both ends of the columnar hammer can be provided with annular impact parts 51, and the size of the annular impact parts 51 at both ends is the same, thereby eliminating the difference in installation orientation of the hammer 5, simplifying the installation process of the disassembly device 10, and avoiding the reinstallation problem caused by the hammer 5 being installed backwards.

[0044] During operation, the cone sleeve 1 of the disassembly device 10 is first placed into the inner cavity of the sealing sleeve 01 to be disassembled, and the cone sleeve 1 is positioned approximately on the axis of the sealing sleeve 01. Then, the cone 2 is controlled to move axially toward the small end of the cone sleeve 1, forcing the wedge-shaped clamping blocks 3 on the outer periphery of the cone sleeve 1 to move radially outward, so that the wedge-shaped clamping blocks 3 are engaged in the keyway of the sealing sleeve 01, so that the cone sleeve 1 is tightly connected to the sealing sleeve 01 to be disassembled, and the cone 2 and the cone sleeve 1 are fixed. Then, the hammer 5 is controlled to strike the impact surface 41 of the impact rod 4, providing the sealing sleeve 01 with an axial outward force, thereby removing the sealing sleeve 01 from the cavity.

[0045] Finally, open the connection between the cone 2 and the cone sleeve 1, control the cone 2 to move axially toward the large end of the cone sleeve 1, so that the cone 2 is disengaged from the wedge clamping block 3, thereby causing part of the wedge clamping block 3 to move radially inward under its own weight, thereby pulling the cone sleeve 1 out of the inner cavity of the sealing sleeve 01, and completing the complete disassembly process of the sealing sleeve 01.

[0046] In this embodiment, a wedge-shaped clamping block 3 that can move radially is provided on the outer periphery of the cone sleeve 1. The wedge-shaped clamping block 3 is used to clamp the sealing sleeve 01 by engaging with the keyway of the sealing sleeve 01. The impact force direction of the hammer 5 is effectively constrained by the impact rod 4. Compared with the existing manual disassembly and assembly method, it ensures that the force used on the sealing sleeve 01 is basically outward along the axial direction of the sealing sleeve 01, avoiding the problem of the sealing sleeve 01 jamming or even being damaged due to uneven force.

[0047] Meanwhile, the disassembly device 10 has a simple structure, is easy to operate, and has a low cost. It can save time and effort and efficiently complete the disassembly of the sealing sleeve 01 inside the cavity, and effectively protect the structure of the cavity and the sealing sleeve 01.

[0048] Preferably, all wedge-shaped clamping blocks 3 can be set to the same size, and the wedge-shaped clamping blocks 3 are evenly arranged along the circumference of the conical sleeve 1, so that the force on the sealing sleeve 01 is more uniform in all directions, such as Figure 3 As shown.

[0049] Based on the above embodiments, the structure of the wedge clamping block 3 is defined. The outer periphery of the cone sleeve 1 is provided with a mounting hole 12. The wedge clamping block 3 includes a mating part 31 for fitting with the outer periphery of the cone 2 and a snap-fit ​​part 32 for snapping with the keyway. The size of the mating part 31 is larger than the size of the mounting hole 12 to prevent the wedge clamping block 3 from detaching from the mounting hole 12.

[0050] Please refer to Figure 3 The mating part 31 of the wedge clamping block 3 is provided with an inner conical surface. The taper of the inner conical surface of the mating part 31 and the taper of the conical surface 22 of the cone 2 are the same as the taper of the inner conical surface 11 of the cone sleeve 1. Therefore, the axial movement of the cone 2 can squeeze each wedge clamping block 3 to move outward radially.

[0051] The structure and shape of the mating part 31 of the wedge clamping block 3 are determined according to the structure and shape of the keyway of the sealing sleeve 01 to be disassembled in actual production, and will not be described in detail here.

[0052] In order to prevent the wedge clamping block 3 from disengaging from the mounting hole 12 when the cone 2 presses outward, the size of the mating part 31 is larger than the size of the mounting hole 12, so that the part of the mating part 31 that is larger than the mounting hole 12 can play a radial limiting function;

[0053] Considering that the cone 2 moves along the axial direction, in order to facilitate the movement of the cone 2, it is preferable that the circumferential dimension of the mating part 31 of the wedge clamping block 3 is larger than the circumferential dimension of the mounting hole 12 of the cone sleeve 1.

[0054] Based on the above embodiments, in order to prevent the wedge-shaped clamping block 3 from falling into the inner cavity of the cone sleeve 1 under its own weight after the cone 2 exits the inner cavity of the cone sleeve 1, a return spring can be provided between the outer peripheral surface of the mating part 31 and the inner peripheral surface of the cone sleeve 1. The return spring is preferably provided at both ends of the mating part 31 in the circumferential direction to improve the connection stability and reliability of the wedge-shaped clamping block 3 and the cone sleeve 1.

[0055] The reset spring can automatically reset the wedge clamping block 3 after the cone 2 disengages from the mating part 31, making it easier for the cone sleeve 1 to exit the inner cavity of the sealing sleeve 01, and can also prevent the wedge clamping block 3 from falling into the inner cavity of the cone sleeve 1.

[0056] Based on the above embodiments, in order to prevent the hammer 5 from hitting the cone 2 in the opposite direction and causing the sealing sleeve 01 to be installed more tightly, a hammer limiting plate can be provided at the end of the cone 2 that is relatively close to the impact rod 4. The hammer limiting plate is provided protruding from the outer periphery of the cone 2 and is used to prevent the hammer 5 from hitting the cone 2 in the opposite direction.

[0057] The hammer limiting plate can be designed as an integral structure with the cone 2, or it can be connected to the cone 2 through common detachable connection methods such as threaded connection or pin connection.

[0058] To reduce the impact stress on the hammer limiting plate, the outer diameter of the hammer limiting plate is usually set to be larger than the outer diameter of the impact surface 41 of the impact rod 4. In addition, a buffer pad can be provided at the end of the hammer limiting plate that is relatively close to the impact hammer 5. The buffer pad can be specifically set as one, two or more of the common buffer layers such as sponge pad, rubber pad and silicone pad.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The cavity sealing sleeve disassembly device provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A cavity sealing sleeve disassembly device, characterized in that, include: The tapered sleeve (1) has a wedge-shaped clamping block (3) on its outer periphery for engaging with the keyway of the sealing sleeve (01) to be disassembled. The wedge-shaped clamping block (3) can move radially relative to the tapered sleeve (1) to achieve clamping and disengagement between the wedge-shaped clamping block (3) and the sealing sleeve (01). The cone (2) is detachably connected to the cone sleeve (1) at one end. When the cone (2) moves axially toward the small end of the cone sleeve (1), the cone (2) drives the wedge clamping block (3) to move radially outward. A striking rod (4) is provided at the other end of the cone (2). The striking rod (4) has an impact surface (41) at the end that is away from the cone sleeve (1). A hammer (5) for impacting the impact surface (41) is slidably sleeved on the outside of the striking rod (4).

2. The cavity sealing sleeve disassembly device according to claim 1, characterized in that, The outer periphery of the tapered sleeve (1) is provided with a mounting hole (12). The wedge clamping block (3) includes a mating part (31) for fitting with the outer periphery of the tapered body (2) and a snap-fit ​​part (32) for snapping with the keyway. The size of the mating part (31) is larger than the size of the mounting hole (12) to prevent the wedge clamping block (3) from detaching from the mounting hole (12).

3. The cavity sealing sleeve disassembly device according to claim 2, characterized in that, The circumferential dimension of the mating part (31) of the wedge clamping block (3) is greater than the circumferential dimension of the mounting hole (12) of the cone sleeve (1), and a return spring is provided between the outer circumferential surface of the mating part (31) and the inner circumferential surface of the cone sleeve (1). The return spring is used to drive the wedge clamping block (3) to automatically return after the cone (2) is disengaged from the mating part (31).

4. The cavity sealing sleeve disassembly device according to claim 1, characterized in that, The wedge-shaped clamping blocks (3) are all the same size, and the wedge-shaped clamping blocks (3) are evenly arranged along the circumferential direction of the conical sleeve (1).

5. The cavity sealing sleeve disassembly device according to any one of claims 1-4, characterized in that, The cone (2) is provided with a cone outer wire (23), and the small end of the cone sleeve (1) is provided with a cone sleeve female wire (13) for cooperating with the cone outer wire (23).

6. The cavity sealing sleeve disassembly device according to any one of claims 1-4, characterized in that, The cone (2) is provided with a cone mother wire (21), and one end of the striker (4) is provided with a striker outer wire (42) for cooperating with the cone mother wire (21).

7. The cavity sealing sleeve disassembly device according to claim 6, characterized in that, The cone (2) is provided with a hammer limiting plate at one end that is relatively close to the impact rod (4). The hammer limiting plate protrudes from the outer periphery of the cone (2) and is used to prevent the impact hammer (5) from hitting the cone (2) in the opposite direction.

8. The cavity sealing sleeve disassembly device according to claim 7, characterized in that, The hammer body limiting plate has a buffer pad at one end that is closer to the hammer (5). The buffer pad includes a sponge pad, a rubber pad, and a silicone pad.

9. The cavity sealing sleeve disassembly device according to any one of claims 1-4, characterized in that, The impact surface (41) includes an annular impact surface protruding from the outer peripheral surface of the impact rod (4), and the hammer (5) includes a columnar hammer with an annular impact part (51) at at least one end, the outer diameter of the annular impact part (51) being larger than the outer diameter of the annular impact surface.

10. The cavity sealing sleeve disassembly device according to claim 9, characterized in that, Both ends of the cylindrical hammer are provided with the annular impact portion (51), and the size of the annular impact portion (51) at both ends is the same.

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