Safe anti-rotation device for sealing ball valve

Abstract

The safe anti-rotation device comprises an upper cover, a lower cover and a connecting assembly, and the upper cover and the lower cover are arranged at the upper end and the lower end of the sealing ball valve correspondingly; the connecting assembly comprises a bolt and a nut, wherein the bolt sequentially penetrates through the upper cover, the sealing ball valve and the lower cover, and the nut is connected with the screw portion of the bolt and attached to the bottom face of the lower cover. The ball body of the sealing ball valve is fixed, the anticlockwise rotation freedom degree of the ball body is limited, the risk of pressure leakage of the sealing ball valve caused by rotation of the ball body in the coring process is avoided, and the safety and the pressure maintaining success rate of pressure maintaining coring and coring operation are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of petroleum machinery, and in particular relates to a safety anti-rotation device for a sealing ball valve. Background Art

[0002] In the existing on-site coring process of pressure-maintained coring, the sealing ball valve assembly does not have an anti-rotation device. During the movement of the sealing ball valve assembly, the ball may be collided and flipped, causing pressure leakage and safety risks. Due to the high sealing pressure, pressure leakage may cause personal injury and cause the core pressure maintenance failure. Therefore, a sealing ball valve safety anti-rotation device is urgently needed to solve the above problems. Summary of the invention

[0003] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a safety anti-rotation device for a sealed ball valve.

[0004] The present invention is achieved through the following technical solutions:

[0005] A sealing ball valve safety anti-rotation device comprises an upper cover, a lower cover and a connecting assembly, wherein the upper cover and the lower cover are respectively arranged at the upper and lower ends of the sealing ball valve; the connecting assembly comprises bolts passing through the upper cover, the sealing ball valve and the lower cover in sequence, and a nut connected to the screw rod of the bolt, and the nut is in contact with the bottom surface of the lower cover.

[0006] In the above technical solution, the upper cover is a bracket-shaped structure consisting of a horizontal plate and two vertical plates vertically connected to the horizontal plate.

[0007] In the above technical solution, a hexagonal groove is formed in the middle of the top of the horizontal plate of the upper cover, and the bottom of the hexagonal groove forms a circular hole in the upper cover, which is a through hole; the hexagonal end of the bolt is embedded in the hexagonal groove, and the screw part passes through the circular hole in the upper cover.

[0008] In the above technical solution, the bottom surface of the vertical plate of the upper cover is in contact with the top surface of the rib plate.

[0009] In the above technical solution, the depth of the inner cavity of the upper cover is greater than the vertical distance from the plane where the top of the sphere is located to the plane where the top of the rib is located; the vertical distance between the inner sides of the vertical plates of the two upper covers is greater than the maximum radius of the sphere.

[0010] In the above technical solution, the lower cover is a bracket-shaped structure consisting of a horizontal plate and two vertical plates vertically connected to the horizontal plate.

[0011] In the above technical solution, a lower cover circular hole is formed in the middle of the horizontal plate of the lower cover, and the lower cover circular hole is a through hole.

[0012] In the above technical solution, the top surface of the vertical plate of the lower cover is in contact with the bottom surface of the rib plate.

[0013] In the above technical solution, the depth of the inner cavity of the lower cover is greater than the vertical distance from the plane where the bottom of the sphere is located to the plane where the bottom of the rib is located; the vertical distance between the inner sides of the vertical plates of the two lower covers is greater than the maximum radius of the sphere.

[0014] The beneficial effects of the present invention are:

[0015] The present invention provides a sealing ball valve safety anti-rotation device suitable for a pressure-maintaining coring process, which is installed in conjunction with the sealing ball valve by means of end face matching and bolt fastening. The present invention limits the counterclockwise rotation freedom of the ball to prevent the risk of pressure relief and leakage caused by the ball rotating counterclockwise due to factors such as pressure testing of the pressure-maintaining coring sealing valve, on-site ground coring process or transportation process, thereby reducing the safety risk of pressure-maintaining coring operation under pressure, and the structure is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the decomposed structure of the present invention;

[0017] Figure 2 It is a structural schematic diagram of the present invention.

[0018] in:

[0019] 1. Bolts;

[0020] 2. Upper cover; 21. Round hole in upper cover; 22. Hexagonal slot;

[0021] 3. Lower cover; 31. Circular hole of lower cover;

[0022] 4. Nut;

[0023] 5. Sealing ball valve; 51. Rib plate; 52. Ball; 53. Hanging ear.

[0024] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0026] The sealing ball valve 5 to which the present invention is applied comprises a ball 52 and ribs 51 arranged at both ends of the ball 52. A hanging groove is formed at the top of the rib 51. The hanging groove is a U-shaped groove, and one side of the top of the hanging groove is expanded outward to form a V-shaped expansion groove. The ball 52 is connected to the rib 51 through a hanging ear 53. The hanging ear 53 is a table tennis plate-shaped structure, with a circular plate portion placed in the hanging groove and a handle portion placed in the expansion groove.

[0027] like Figure 1 , 2 As shown, a sealing ball valve safety anti-rotation device suitable for a pressure-maintaining coring process includes an upper cover 2, a lower cover 3 and a connecting assembly, wherein the upper cover 2 and the lower cover 3 are respectively arranged at the upper and lower ends of the sealing ball valve 5; the connecting assembly includes a bolt 1 that passes through the upper cover 2, the sealing ball valve 5 and the lower cover 3 in sequence, and a nut 4 connected to the screw portion of the bolt 1, and the nut 4 is in contact with the bottom surface of the lower cover 3.

[0028] The upper cover 2 is a bracket-shaped structure consisting of a horizontal plate and two vertical plates vertically connected to the horizontal plate; a hexagonal groove 22 is formed in the middle of the top of the horizontal plate of the upper cover 2, and a circular hole 21 is formed at the bottom of the hexagonal groove 22, and the circular hole 21 of the upper cover is a through hole; the hexagonal end of the bolt 1 is embedded in the hexagonal groove 22, and the screw rod passes through the circular hole 21 of the upper cover;

[0029] The bottom surface of the vertical plate of the upper cover 2 is in contact with the top surface of the rib plate 51;

[0030] The depth of the inner cavity of the upper cover 2 is greater than the vertical distance from the plane where the top of the sphere 52 is located to the plane where the top of the rib 51 is located; the vertical distance between the inner sides of the vertical plates of the two upper covers 2 is greater than the maximum radius of the sphere 52; the above distance requirements ensure that the upper cover does not interfere with the top and bottom edges of the sphere after the sealing valve is closed; the upper cover 2 presses the hanging ear 53 of the sealing ball valve 5, limiting the freedom of the sealing valve ball to rotate counterclockwise.

[0031] The lower cover 3 is a bracket-shaped structure consisting of a horizontal plate and two vertical plates vertically connected to the horizontal plate; a lower cover circular hole 31 is formed in the middle of the horizontal plate of the lower cover 3, and the lower cover circular hole 31 is a through hole; the top surface of the vertical plate of the lower cover 3 is in contact with the bottom surface of the rib plate 51;

[0032] The depth of the inner cavity of the lower cover 3 is greater than the vertical distance from the plane where the bottom of the sphere 52 is located to the plane where the bottom of the rib 51 is located; the vertical distance between the inner sides of the vertical plates of the two lower covers 3 is greater than the maximum radius of the sphere 52; the above distance requirements ensure that the upper cover does not interfere with the top and bottom edges of the sphere after the sealing valve is closed.

[0033] The assembly method of the present invention:

[0034] The lower end face of the upper cover 2 cooperates with the upper end face of the sealing ball valve rib plate, the upper end face of the lower cover 3 cooperates with the lower end face of the sealing ball valve rib plate, the left and right end faces on the inner side of the upper cover 2 respectively cooperate with the left and right end faces on the sealing ball valve, the left and right end faces on the inner side of the lower cover 3 respectively cooperate with the left and right end faces on the sealing ball valve, the hexagonal head of the bolt 1 cooperates with the hexagonal hole 21 at the top of the upper cover 2, the bolt 1 passes through the upper cover circular hole 21 and the lower cover circular hole 31 respectively, the nut 4 and the bolt 1 are threadedly connected and tightened, the lower end face of the hexagonal head of the bolt 1 and the lower end face of the hexagonal hole 21 are tightly matched, the upper end face of the nut 4 and the lower end face of the lower cover are tightly matched, and after the bolt and nut are tightened, the counterclockwise rotation of the sealing ball valve ball is limited, which can effectively prevent the sealing ball valve from opening during the on-site core discharge process, causing the inability to maintain pressure and pressure safety problems.

[0035] Method of use of the present invention:

[0036] When the present invention is working, during the process of coring, after the sealing ball valve is pulled out of the outer cylinder, the sealing ball valve is in a closed state, and the upper cover 2, the lower cover 3, the bolt 1 and the nut 4 are respectively installed. The lower end surface of the upper cover 2 presses the raised parts on both sides of the sealing ball valve ball body, restricting the counterclockwise rotation freedom of the sealing ball valve ball body, and the clockwise rotation freedom of the sealing ball valve ball body is restricted by the rib plate, thereby achieving the safety anti-rotation effect of the sealing ball valve.

[0037] The present invention fixes the ball of the sealing ball valve by designing an upper cover, a lower cover and a fastening structure, limits the counterclockwise rotation freedom of the ball, avoids the risk of pressure leakage of the sealing ball valve caused by the rotation of the ball during the coring process, and improves the safety and success rate of pressure-maintaining coring operations.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0040] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A sealing ball valve safety anti-rotation device, characterized in that: The invention comprises an upper cover (2), a lower cover (3) and a connection assembly, wherein the upper cover (2) and the lower cover (3) are respectively arranged at the upper and lower ends of a sealing ball valve (5); the connection assembly comprises a bolt (1) passing through the upper cover (2), the sealing ball valve (5) and the lower cover (3) in sequence, and a nut (4) connected to the screw rod of the bolt (1), and the nut (4) is in contact with the bottom surface of the lower cover (3).

2. The sealing ball valve safety anti-rotation device according to claim 1 is characterized in that: The upper cover (2) is a bracket-shaped structure consisting of a horizontal plate and two vertical plates vertically connected to the horizontal plate.

3. The sealing ball valve safety anti-rotation device according to claim 2 is characterized in that: A hexagonal groove (22) is formed in the middle of the top of the horizontal plate of the upper cover (2), and a circular hole (21) is formed at the bottom of the hexagonal groove (22), and the circular hole (21) is a through hole; the hexagonal end of the bolt (1) is embedded in the hexagonal groove (22), and the screw rod passes through the circular hole (21) of the upper cover.

4. The sealing ball valve safety anti-rotation device according to claim 2 is characterized in that: The bottom surface of the vertical plate of the upper cover (2) is in contact with the top surface of the rib plate (51).

5. The sealing ball valve safety anti-rotation device according to claim 1 is characterized in that: The depth of the inner cavity of the upper cover (2) is greater than the vertical distance from the plane where the top of the sphere (52) is located to the plane where the top of the rib plate (51) is located; the vertical distance between the inner sides of the vertical plates of the two upper covers (2) is greater than the maximum radius of the sphere (52).

6. The sealing ball valve safety anti-rotation device according to claim 1 is characterized in that: The lower cover (3) is a bracket-shaped structure consisting of a horizontal plate and two vertical plates vertically connected to the horizontal plate.

7. The sealing ball valve safety anti-rotation device according to claim 6, characterized in that: A lower cover circular hole (31) is formed in the middle of the horizontal plate of the lower cover (3), and the lower cover circular hole (31) is a through hole.

8. The sealing ball valve safety anti-rotation device according to claim 6, characterized in that: The top surface of the vertical plate of the lower cover (3) is in contact with the bottom surface of the rib plate (51).

9. The sealing ball valve safety anti-rotation device according to claim 1, characterized in that: The depth of the inner cavity of the lower cover (3) is greater than the vertical distance from the plane where the bottom of the sphere (52) is located to the plane where the bottom of the rib plate (51) is located; the vertical distance between the inner sides of the vertical plates of the two lower covers (3) is greater than the maximum radius of the sphere (52).

Images