Installation device and system for floating oil seals for vertical drilling tools

Abstract

The present application relates to the technical fields of vertical drilling, in particular to a kind of installation device and system of floating oil seal for vertical drilling tool.The installation device of floating oil seal for vertical drilling tool includes fixed ring and moving ring;Fixed ring is used to be fitted on floating seal seat, moving ring is used to be fitted on floating seal assembly, fixed ring and moving ring are connected by several axially arranged connecting components, when rotating connecting component drives fixed ring and moving ring to approach, floating seal assembly has the tendency to approach floating seal seat.The present application replaces nylon flat spade by fixed ring and moving ring, and uses threaded force transmission to replace artificial force, which can effectively save manpower, improve work efficiency and safety.

Description

Technical Field

[0001] This invention relates to the field of vertical drilling technology, and in particular to an installation device and system for a floating oil seal for vertical drilling tools. Background Technology

[0002] The structural principle of mainstream vertical drilling tools in China mainly adopts a sliding push-fit type. To achieve relative stability of the body, these tools often use a floating oil seal, a dynamic sealing device. The conventional method for installing floating oil seals is by hand using a nylon flat chisel. Due to the high hardness and thick wire diameter of the floating oil seal's O-ring, at least two people are required for installation. One person aligns the floating seal with both hands and presses it firmly against the bearing, while the other person uses the nylon chisel to push the O-ring little by little into the metal sealing ring. This manual installation method is not only laborious but also prone to twisting the O-ring or causing it to detach from the metal sealing ring, leading to installation failure. Furthermore, the sharp metal sealing ring can easily cut hands during installation, causing personal injury. Summary of the Invention

[0003] The purpose of this invention is to provide an installation device and system for floating oil seals for vertical drilling tools, so as to alleviate the technical problems of laborious installation, low efficiency and low safety of existing floating oil seals during the installation process.

[0004] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows:

[0005] This invention provides an installation device for a floating oil seal for vertical drilling tools, comprising a fixed ring and a movable ring;

[0006] The fixed ring is used to fit onto the floating seal seat, and the movable ring is used to fit onto the floating seal assembly. The fixed ring and the movable ring are connected by several axially arranged connecting components. When the connecting components are rotated to bring the fixed ring and the movable ring closer together, the floating seal assembly tends to move closer to the floating seal seat.

[0007] Furthermore, the fixing ring includes a first connecting portion and a first load-bearing portion in an annular structure;

[0008] The first connecting part is embedded in the first load-bearing part;

[0009] The movable ring includes a second connecting part and a second load-bearing part with an annular structure;

[0010] The second connecting part is embedded in the second load-bearing part.

[0011] Furthermore, the outer peripheral surface of the floating seal includes a first peripheral surface and a second peripheral surface, and the first peripheral surface and the second peripheral surface form an angle greater than 180°.

[0012] The inner circumferential surface of the first connecting part includes a first contact surface and a second contact surface, wherein the first contact surface and the first circumferential surface abut against each other, and the second contact surface and the second circumferential surface abut against each other.

[0013] Furthermore, the floating seal assembly includes an O-ring and a floating seal ring, with the O-ring fitted onto the floating seal ring; the end face of the floating seal ring furthest from the floating seal seat is the pressure-bearing surface of the floating seal ring;

[0014] The second connecting part includes a first abutting structure and a second abutting structure;

[0015] The first abutting structure is located on the side of the floating seal ring away from the floating seal seat, and the end face of the first abutting structure near the floating seal ring is the third contact surface. The third contact surface mates with and abuts against the pressure-bearing surface of the floating seal ring.

[0016] The second abutment structure is fitted onto the float seal ring and abuts against the side of the O-ring away from the float seal seat.

[0017] Furthermore, a chamfer is provided at the connection between the inner circumference of the second abutment structure and the end face of the second abutment structure near the float seal ring, and the chamfer abuts against the side of the O-ring away from the float seal seat.

[0018] Furthermore, the chamfer is a rounded chamfer structure, and the chamfer radius matches the radius of the O-ring.

[0019] Furthermore, the first and second load-bearing parts are each evenly distributed with through holes for several connecting components to pass through.

[0020] Furthermore, a centering sleeve is embedded inside the floating seal ring, and the inner end of the centering sleeve abuts against the floating seal seat.

[0021] Furthermore, it also includes a floating seal seat and a floating seal assembly, which are fitted onto the workpiece to be installed.

[0022] Secondly, the present invention provides an installation system for a floating oil seal for a vertical drilling tool, including the above-mentioned installation device for a floating oil seal for a vertical drilling tool, and also including a workpiece to be installed.

[0023] Based on the above technical solutions, the technical effects achievable by this invention can be analyzed as follows:

[0024] An installation device for a floating oil seal for a vertical drilling tool includes a fixed ring and a movable ring;

[0025] The fixed ring is used to fit onto the floating seal seat, and the movable ring is used to fit onto the floating seal assembly. The fixed ring and the movable ring are connected by several axially arranged connecting components. When the connecting components are rotated to bring the fixed ring and the movable ring closer together, the floating seal assembly tends to move closer to the floating seal seat.

[0026] During installation, the fixed ring is fitted onto the floating seal seat, and the movable ring is fitted onto the floating seal assembly. The fixed ring and the movable ring are connected by a connecting component. Tightening the connecting component moves the fixed ring and the movable ring closer together, which can push the floating seal assembly closer and into the floating seal seat. Thus, by using the fixed ring and the movable ring instead of the nylon flat shovel, and by using the thread to transmit force instead of manual force, it is possible to effectively save manpower, improve work efficiency and safety. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure when the present invention is in use;

[0029] Figure 2 This is a partial structural schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram showing the connection between the fixed ring and the floating seal seat of the present invention;

[0031] Figure 4 This is a schematic diagram showing the connection between the moving ring and the floating seal assembly of the present invention.

[0032] Icons: 100 - Fixed ring; 200 - Moving ring; 300 - Floating seal seat; 400 - Floating seal assembly; 500 - Connecting assembly; 600 - Chamfer; 700 - Straightening sleeve; 800 - Removal hole; 900 - Workpiece to be installed;

[0033] 110 - First connecting part; 120 - First load-bearing part; 210 - Second connecting part; 220 - Second load-bearing part; 310 - First circumferential surface; 320 - Second circumferential surface; 410 - O-ring; 420 - Float seal ring;

[0034] 111 - First contact surface; 112 - Second contact surface; 211 - First abutting structure; 212 - Second abutting structure; 421 - Floating seal ring bearing surface. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] In existing technologies, due to the high hardness and thick wire diameter of the O-ring of floating oil seals, at least two people are required for installation. One person aligns the floating seal with both hands and presses the floating oil seal firmly, while the other person uses a nylon shovel to push the O-ring into the metal sealing ring bit by bit. This manual installation method is not only laborious but also prone to twisting or detaching the O-ring from the metal sealing ring, leading to installation failure. Furthermore, during installation, it is easy to cut one's hands with the sharp metal sealing ring, causing personal injury.

[0043] In view of this, the present invention provides an installation device for a floating oil seal for vertical drilling tools, such as... Figure 1 , Figure 2 As shown, the device includes a fixed ring 100 and a movable ring 200;

[0044] The fixed ring 100 is used to fit on the floating seal seat 300, and the movable ring 200 is used to fit on the floating seal assembly 400. The fixed ring 100 and the movable ring 200 are connected by several axially arranged connecting components 500. When the connecting components 500 are rotated to bring the fixed ring 100 and the movable ring 200 closer together, the floating seal assembly 400 tends to move closer to the floating seal seat 300.

[0045] Both the floating seal seat 300 and the floating seal assembly 400 are fitted onto the workpiece 900 to be installed. The floating seal seat 300 is provided with an annular through groove for accommodating the floating seal assembly 400. The floating seal assembly 400 is located on the side near the annular through groove and abuts against the floating seal seat 300. Several axially arranged screws are screwed into the workpiece 900 from the bottom surface of the annular through groove through the outer end face of the floating seal seat 300 to fix the floating seal seat 300.

[0046] This device is used to directly assemble the floating seal seat 300 and the floating seal assembly 400 onto the workpiece 900 to be installed. Specifically, during installation, the fixing ring 100 is fitted onto the floating seal seat 300, and the moving ring 200 is fitted onto the floating seal assembly 400. The fixing ring 100 and the moving ring 200 are connected by a connecting assembly 500. Tightening the connecting assembly 500 causes the fixing ring 100 and the moving ring 200 to move closer to each other, which can push the floating seal assembly 400 closer to and into the floating seal seat 300. Thus, by using the fixing ring 100 and the moving ring 200 instead of the nylon flat chisel, and by using the threaded force transmission instead of manual force, it is possible to effectively save manpower, improve work efficiency and safety.

[0047] In the optional embodiments of this example, the connecting component 500 includes a bolt and a nut. The bolt extends into the fixed ring 100 and extends out of the movable ring 200. A nut that mates with the bolt is provided on the outer side of the movable ring 200.

[0048] In the optional embodiments of this example, it is more preferred that gaskets are installed at the connection between the fixed ring 100 and the bolt and at the connection between the movable ring 200 and the nut, so as to protect the fixed ring 100 and the movable ring 200.

[0049] The specific structure and shape of the fixed ring 100 and the movable ring 200 are detailed below:

[0050] 1. Regarding the specific structure and shape of the retaining ring 100, such as... Figure 2 , Figure 3 As shown.

[0051] First, it should be noted that the outer peripheral surface of the floating seal seat 300 includes a first peripheral surface 310 and a second peripheral surface 320, and the first peripheral surface 310 and the second peripheral surface 320 form an angle greater than 180°. The cross-section of the first peripheral surface 310 is inclined upward in a direction from the outside to the inside, while the cross-section of the second peripheral surface 320 is horizontal.

[0052] The fixing ring 100 includes a first connecting part 110 and a first load-bearing part 120 in a ring structure; the first connecting part 110 is embedded in the first load-bearing part 120 and is integrally formed with the first load-bearing part 120.

[0053] The inner circumferential surface of the first connecting part 110 includes a first contact surface 111 and a second contact surface 112, and the first contact surface 111 and the first circumferential surface 310 abut against each other, and the second contact surface 112 and the second circumferential surface 320 abut against each other, so as to hook the floating seal seat 300.

[0054] The first load-bearing part 120 has through holes evenly distributed for several connecting components 500 to pass through.

[0055] During installation, the retaining ring 100 is fitted onto the end of the floating seal seat 300 on the workpiece 900 to be installed, away from the floating seal assembly 400, and the retaining ring 100 is moved toward the floating seal seat 300 until the first contact surface 111 and the first circumferential surface 310 abut together, and the second contact surface 112 and the second circumferential surface 320 abut together, so that when the first bearing part 120 is subjected to pressure from the connecting assembly 500, the retaining ring 100 will not detach from the floating seal seat 300.

[0056] 2. Regarding the specific structure and shape of the moving ring 200, such as... Figure 2 , Figure 4 As shown.

[0057] First, it should be noted that the floating seal assembly 400 includes an O-ring 410 and a floating seal ring 420, with the O-ring 410 fitted onto the floating seal ring 420; and the end face of the floating seal ring 420 away from the floating seal seat 300 is the pressure-bearing surface 421 of the floating seal ring.

[0058] The movable ring 200 includes a second connecting part 210 and a second load-bearing part 220 in a ring structure; the second connecting part 210 is embedded in the second load-bearing part 220 and is integrally formed with the second load-bearing part 220.

[0059] The second connecting part 210 includes a first abutting structure 211 and a second abutting structure 212;

[0060] The first abutting structure 211 is disposed on the side of the floating seal ring 420 away from the floating seal seat 300, and the end face of the first abutting structure 211 near the floating seal ring 420 is the third contact surface. The third contact surface is an inclined surface that matches the pressure bearing surface 421 of the floating seal ring, and the third contact surface abuts against the pressure bearing surface 421 of the floating seal ring.

[0061] The second abutment structure 212 is fitted onto the floating seal ring 420, and a chamfer 600 is provided at the connection between the inner circumference of the second abutment structure 212 and the end face of the second abutment structure 212 near the floating seal ring 420. The chamfer 600 abuts against the side of the O-ring 410 away from the floating seal seat 300. The chamfer 600 is a rounded chamfer structure, and the curvature of the chamfer 600 matches the curvature of the O-ring 410.

[0062] The second load-bearing part 220 has through holes evenly distributed for several connecting components 500 to pass through.

[0063] During installation, the movable ring 200 is fitted onto the end of the floating seal assembly 400 on the workpiece 900 away from the floating seal seat 300, and the movable ring 200 is moved toward the floating seal assembly 400 until the third contact surface and the floating seal ring bearing surface 421 abut against each other, and the second contact surface 112 and the second circumferential surface 320 abut against each other, so that when the second bearing part 220 is subjected to the pressure brought by the nut, the movable ring 200 can drive the floating seal assembly 400 to move.

[0064] Furthermore, a centering sleeve 700 is embedded inside the floating seal ring 420, and the inner end of the centering sleeve 700 abuts against the bottom surface of the annular through groove on the floating seal seat 300. The centering sleeve 700 is used to ensure that the floating seal ring 420 always moves in the horizontal direction, thereby improving work efficiency.

[0065] In the optional scheme of this embodiment, a more preferred option is that the outer end of the straightening sleeve 700 is provided with a plurality of radially arranged disassembly holes 800. After the floating seal seat 300 and the floating seal assembly 400 are installed, an iron rod or other tool is inserted into the disassembly hole 800 so that the workers can take out the straightening sleeve 700.

[0066] The working process of this invention is described in detail below:

[0067] Fix the floating seal seat 300, and abut one end of the straightening sleeve 700 against the bottom surface of the annular through groove on the floating seal seat 300; fit the assembled floating seal assembly 400 onto the straightening sleeve 700 and move it until it abuts against the floating seal seat 300; fit the fixing ring 100 onto the floating seal seat 300 and move it until it abuts against the side of the fixing ring 100 away from the floating seal assembly 400; fit the moving ring 200 onto the floating seal assembly 400 and move it until it abuts against the side of the floating seal assembly 400 away from the floating seal seat 300; connect the fixing ring 100 and the moving ring 200 through several connecting components 500; gently tighten each connecting component 500 in a symmetrical sequence until the connecting component 500 is installed inside the floating seal seat 300; remove the connecting components 500, fixing ring 100, moving ring 200 and straightening sleeve 700 to complete the installation.

[0068] In this embodiment, by tightening the bolts or nuts in a sequential and symmetrical order, the force on the moving ring 200 can be made relatively uniform, thus ensuring that the force on the O-ring 410 is relatively uniform during installation, thereby effectively improving installation efficiency. Furthermore, when there is significant torque resistance at a certain point, the force on the O-ring 410 can be adjusted simply by tightening the bolts or nuts symmetrically positioned at that point.

[0069] The present invention also provides an installation system for a floating oil seal for a vertical drilling tool, comprising the above-mentioned installation device for the floating oil seal for a vertical drilling tool and a workpiece 900 to be installed.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An installation device for a floating oil seal for a vertical drilling tool, characterized in that, The installation device for floating oil seal of vertical drilling tool comprises a fixed ring (100) and a moving ring (200); the fixed ring (100) is used for sleeving on a floating seal seat (300), the moving ring (200) is used for sleeving on a floating seal assembly (400), the fixed ring (100) and the moving ring (200) are connected through a plurality of axially arranged connecting assemblies (500), when the connecting assembly (500) is rotated to drive the fixed ring (100) and the moving ring (200) to approach each other, the floating seal assembly (400) has a tendency to approach the floating seal seat (300); the fixed ring (100) comprises a first connecting part (110) and a first force bearing part (120) in a ring structure; the first connecting part (110) is embedded in the first force bearing part (120); the moving ring (200) comprises a second connecting part (210) and a second force bearing part (220) in a ring structure; the second connecting part (210) is embedded in the second force bearing part (220); the outer peripheral surface of the floating seal seat (300) comprises a first peripheral surface (310) and a second peripheral surface (320), and an included angle greater than 180° is formed between the first peripheral surface (310) and the second peripheral surface (320); the inner peripheral surface of the first connecting part (110) comprises a first contact surface (111) and a second contact surface (112), and the first contact surface (111) abuts against the first peripheral surface (310), and the second contact surface (112) abuts against the second peripheral surface (320); the floating seal assembly (400) comprises an O-shaped ring (410) and a floating seal ring (420), the O-shaped ring (410) is sleeved on the floating seal ring (420); the end surface of the floating seal ring (420) away from the floating seal seat (300) is a floating seal ring pressure bearing surface (421); the second connecting part (210) comprises a first abutting structure (211) and a second abutting structure (212); the first abutting structure (211) is arranged on the side of the floating seal ring (420) away from the floating seal seat (300), the end surface of the first abutting structure (211) close to the floating seal ring (420) is a third contact surface, and the third contact surface cooperates with and abuts against the floating seal ring pressure bearing surface (421); the second abutting structure (212) is sleeved on the floating seal ring (420) and abuts against the side of the O-shaped ring (410) away from the floating seal seat (300); the floating seal ring (420) is embedded with a centralizing sleeve (700), and the inner end of the centralizing sleeve (700) abuts against the floating seal seat (300).

2. The installation device for floating oil seal of vertical drilling tool according to claim 1, wherein a chamfer (600) is formed at the connection between the inner peripheral surface of the second abutting structure (212) and the end surface of the second abutting structure (212) close to the floating seal ring (420), and the chamfer (600) abuts against the side of the O-shaped ring (410) away from the floating seal seat (300). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 3. The mounting device for floating oil seal of vertical drilling tool according to claim 2, characterized in that, The chamfer (600) is a circular arc chamfer structure, and the radian of the chamfer (600) matches the radian of the O-ring (410).

4. The mounting device for floating oil seal of vertical drilling tool according to claim 3, characterized in that, The first force bearing part (120) and the second force bearing part (220) are respectively uniformly distributed with through holes for the connection assemblies (500) to pass through.

5. The mounting device for floating oil seal of vertical drilling tool according to claim 1, characterized in that, The mounting device for floating oil seal of vertical drilling tool according to any one of claims 1-5 further comprises the floating seal seat (300) and the floating seal assembly (400), and the floating seal seat (300) and the floating seal assembly (400) are sleeved on the workpiece (900) to be installed.

6. A mounting system for a floating oil seal for a vertical drilling tool, characterized in that, The mounting device for floating oil seal of vertical drilling tool according to any one of claims 1-5 further comprises the workpiece (900) to be installed.

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