Rust-proof clamp spring for bypass valve

Abstract

The utility model provides a rust-proof clamp spring for a bypass valve, and relates to the technical field of clamp springs. A rust-proof clamp spring for a bypass valve comprises a clamp spring body, and a protection ring is arranged on the inner side wall of the clamp spring body. The cross section of the clamp spring body in the axial direction is L-shaped, a limiting groove is formed in the inner side wall of the clamp spring body, the cross section of the protection ring in the axial direction is Z-shaped, and the protection ring is partially embedded in the limiting groove. By the adoption of the clamp spring, direct erosion of drilling fluid to the clamp spring can be reduced, the anti-rust and anti-corrosion performance of the clamp spring is improved, and the service life of the clamp spring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of circlips, and particularly to an anti-rust circlip for a bypass valve. Background Art

[0002] Multiple-switch plugging and circulating tools are widely used in the oil drilling industry. When well leakage accidents occur, etc., they can perform plugging with high-concentration large-particle materials multiple times without pulling out the drill string, as well as perform well flushing or casing cleaning, effectively reducing the on-site well control risk.

[0003] There is a circlip in the multiple-switch plugging and circulating tool for fixing the ball seat. The circlip is installed on the inner side wall of the inner sleeve of the bypass valve and is located above the ball seat. Its main function is to limit the upward movement of the ball seat. However, ordinary circlips are easily corroded and damaged under the continuous impact of drilling fluid under oil drilling operation conditions, and their service life is very short. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an anti-rust circlip for a bypass valve, which can reduce the direct erosion of the drilling fluid on the circlip, improve the rust and corrosion resistance of the circlip, and extend its service life.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The embodiment of the present application provides an anti-rust circlip for a bypass valve, including a circlip body. A protective ring is provided on the inner side wall of the circlip body; the cross-section of the circlip body along its axis is L-shaped, a limiting groove is formed on the inner side wall of the circlip body, the cross-section of the protective ring along its axis is Z-shaped, and the protective ring is partially embedded in the limiting groove.

[0007] Further, in some embodiments of the utility model, sealing washers are provided on both outer sides of the protective ring facing outward.

[0008] Further, in some embodiments of the utility model, annular mounting grooves are provided on both outer sides of the protective ring facing outward, and the sealing washers are embedded in the mounting grooves.

[0009] Further, in some embodiments of the utility model, an arc-shaped flow guiding surface is provided on the inner side wall of the protective ring.

[0010] Further, in some embodiments of the utility model, the circlip body is made of nickel alloy material.

[0011] Further, in some embodiments of the utility model, the protective ring is made of elastic material.

[0012] Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

[0013] An embodiment of the present utility model provides an anti-rust circlip for a bypass valve, which includes a circlip body. A protective ring is provided on the inner side wall of the circlip body. The cross-section of the circlip body along its axial direction is L-shaped, and a limiting groove is formed on the inner side wall of the circlip body. The cross-section of the protective ring along its axial direction is Z-shaped, and a part of the protective ring is embedded in the limiting groove. It can reduce the direct erosion of the drilling fluid on the circlip, improve the anti-rust and anti-corrosion performance of the circlip, and extend its service life. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a cross-sectional view of the anti-rust circlip provided by the embodiment of the present utility model;

[0016] Figure 2 It is a partial cross-sectional view after the anti-rust circlip provided by the embodiment of the present utility model is installed;

[0017] Figure 3 It is Figure 2 an enlarged view of part A in

[0018] Reference numerals: 1 - circlip body; 2 - protective ring; 3 - limiting groove; 4 - sealing washer; 5 - installation groove; 6 - flow guiding surface; 7 - inner sliding sleeve of the bypass valve; 8 - clamping groove; 9 - ball seat. Detailed Embodiments

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0021] It should be noted that like reference numerals and letters refer to like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only 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 inclined.

[0024] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set" and "connect" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] Embodiment

[0026] Please refer to Figures 1 - 3 , this embodiment provides an anti-rust snap ring for a bypass valve, including a snap ring body 1, and a protective ring 2 is provided on the inner side wall of the snap ring body 1; the cross-section of the snap ring body 1 along its axial direction is L-shaped, a limiting groove 3 is formed on the inner side wall of the snap ring body 1, the cross-section of the protective ring 2 along its axial direction is Z-shaped, and the protective ring 2 is partially embedded in the limiting groove 3.

[0027] Sealing gaskets 4 are provided on both outer sides of the protective ring 2 facing outwards, annular mounting grooves 5 are provided on both outer sides of the protective ring 2 facing outwards, and the sealing gaskets 4 are embedded in the mounting grooves 5. By providing the mounting grooves 5, it is convenient for the installation and limitation of the sealing gaskets 4, preventing the sealing gaskets 4 from sliding on the side wall of the protective ring 2 and improving the sealing stability.

[0028] During actual use, such as Figure 2As shown in the figure, the ball seat 9 is installed on the inner side wall of the inner sleeve 7 of the bypass valve. The left side of the ball seat 9 abuts against the inner side wall of the inner sleeve 7 of the bypass valve. A clamping groove 8 is provided on the inner side wall of the inner sleeve 7 of the bypass valve. The anti-rust circlip provided by the present application can be clamped and installed in the clamping groove 8. The left side of the circlip body 1 abuts against the right side of the ball seat 9, and both the left and right sides of the circlip body 1 are embedded in the clamping groove 8 and abut against the inner side wall of the inner sleeve 7 of the bypass valve.

[0029] Since the inner side wall of the circlip body 1 is provided with a protective ring 2, the exposed part of the circlip body 1 is shielded and protected by the protective ring 2 in this way. The drilling fluid flowing in the inner sleeve 7 of the bypass valve flows through the middle of the protective ring 2. In this way, it is possible to prevent or reduce the direct contact between the drilling fluid and the circlip body 1, thereby reducing the direct scouring and corrosion of the drilling fluid on the circlip body 1, improving the anti-rust and anti-corrosion performance of the circlip, and extending its service life.

[0030] Moreover, by setting the sealing gasket 4, during installation, the left sealing gasket 4 abuts against the right side of the ball seat 9, and the right sealing gasket 4 is embedded in the clamping groove 8 and abuts against the inner side wall of the inner sleeve 7 of the bypass valve. In this way, it is possible to prevent the drilling fluid from seeping into the circlip body 1 from both sides of the protective ring 2, further improving the anti-rust and anti-corrosion performance of the circlip and extending its service life.

[0031] As Figures 1 - 3 shown, in some embodiments of the present utility model, the inner side wall of the protective ring 2 is provided with an arc-shaped flow guiding surface 6. By providing the flow guiding surface 6, to better adapt to the hydrodynamic characteristics, a smooth flow channel is formed on the inner side wall of the protective ring 2 to ensure that the drilling fluid can smoothly bypass the circlip body 1 and continue to flow, avoiding adverse factors such as vortex or turbulence.

[0032] As Figures 1 - 3 shown, in some embodiments of the present utility model, the circlip body 1 is made of nickel alloy material. The circlip body 1 made of nickel alloy material has better corrosion resistance. The protective ring 2 in this embodiment is made of elastic material, and specifically can be made of rubber material, so that it is convenient for its deformation to be installed in the clamping groove 8.

[0033] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, it is obvious that the present application is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present application, the present application can be implemented in other specific forms.

[0034] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present application is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved. For those skilled in the art, the utility model can have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. An anti-rust circlip for a bypass valve, characterized in that: It includes a circlip body, and a protective ring is provided on the inner side wall of the circlip body; the cross-section of the circlip body along its axis is L-shaped, a limiting groove is formed on the inner side wall of the circlip body, the cross-section of the protective ring along its axis is Z-shaped, and a part of the protective ring is embedded in the limiting groove.

2. The anti-rust snap ring for a bypass valve according to claim 1, wherein: Sealing washers are provided on both outer sides of the protective ring facing outwards.

3. The anti-rust circlip for a bypass valve according to claim 2, characterized in that: Annular mounting grooves are provided on both outer sides of the protective ring facing outwards, and the sealing washers are embedded in the mounting grooves.

4. A rust-proof snap ring for a bypass valve according to claim 1, characterized in that: An arc-shaped flow guiding surface is provided on the inner side wall of the protective ring.

5. The anti-rust snap ring for a bypass valve according to claim 1, characterized in that: The circlip body is made of nickel alloy material.

6. The anti-rust circlip for a bypass valve according to claim 1, characterized in that: The protective ring is made of elastic material.

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