Petroleum drilling pump valve body with high reliability

Abstract

The utility model discloses a high-reliability petroleum drilling pump valve body, which relates to the field of petroleum drilling equipment and comprises a cylindrical shell, a thread line is arranged at the bottom of the outer side of the cylindrical shell, a conical supporting seat is arranged at the bottom end of the cylindrical shell, and an adjusting component is arranged at the inner bottom end of the conical supporting seat. A sealing disc matched with the conical supporting seat is arranged at the top end of the adjusting assembly, and a cleaning assembly matched with the conical supporting seat is arranged on one side of the bottom of the adjusting assembly. Under the action of the conical supporting base, the adjusting assembly and the sealing disc, it is ensured that drilling fluid circulates in a shaft, and the situation that the drilling fluid leaks in the drilling process can be effectively prevented; under the action of the cleaning assembly, the inclined plane attached with particulate matters in drilling fluid can be cleaned, abrasion generated when the sealing ring is in contact with the inclined plane is reduced, the service life of the valve body is prolonged, and the performance of the valve body is improved.

Description

Technical Field

[0001] The utility model relates to the field of oil drilling equipment, and more specifically, to a high-reliability valve body of an oil drilling pump. Background Technique

[0002] An oil drilling pump is a key piece of equipment in the oil drilling process, mainly used for circulating drilling fluid to clean the bottom of the well and carry out the crushed cuttings, ensuring the continuous progress of the drilling operation. It consists of a power device, a transmission system, a control system, etc., and can provide sufficient pressure and flow rate to meet the requirements of drilling fluid circulation during the drilling process.

[0003] The valve body in an oil drilling pump is an important sealing component, whose main function is to prevent the leakage of drilling fluid during the drilling process, ensuring the circulation of drilling fluid in the wellbore. The valve body is usually made of rubber or other high-strength materials and can withstand high-pressure and high-temperature conditions. It prevents the leakage of drilling fluid during the suction and discharge processes of the drilling pump through the seals between the well wall and the pump body, and can also prevent formation fluids from entering the drill string through the bit nozzle during a blowout.

[0004] For example, Chinese Patent No. CN213838872U discloses a high-reliability valve body of an oil drilling pump, including a support seat, a closed cover, and an elastic device. A cavity is provided in the support seat, and a plurality of square grooves communicating with the cavity are provided on the upper side of the closed cover. A long groove communicating with the cavity is provided on the inner bottom surface of the support seat. A frustum coaxial with the support seat is arranged in the support seat, and the peripheral surface of the frustum can abut against the support seat. An elastic device is arranged between the inner bottom surface of the support seat and the lower end of the frustum. This utility model has the effect of being able to quickly replace the spring and ensuring the working efficiency of the oil drilling pump.

[0005] However, when this utility model performs a sealing operation on the oil drilling pump, it is inevitable that particulate matter in the drilling fluid will adhere to the inclined surface in the cavity, which will cause wear when the sealing ring on the valve body contacts the inclined surface, thus affecting the service life and performance of the valve body.

[0006] Regarding the problems in the related technology, no effective solution has been proposed yet. Summary of the Utility Model

[0007] Regarding the problems in the related technology, the present utility model proposes a high-reliability valve body of an oil drilling pump to overcome the above-mentioned technical problems existing in the existing related technology.

[0008] To this end, the specific technical solution adopted by the present utility model is as follows:

[0009] A highly reliable valve body for an oil drilling pump, comprising a cylindrical housing. Thread lines are provided at the outer bottom of the cylindrical housing. A conical support seat is provided at the bottom end of the cylindrical housing. An adjustment assembly is provided at the inner bottom end of the conical support seat. A sealing disc that cooperates with the conical support seat is provided at the top end of the adjustment assembly. A cleaning assembly that cooperates with the conical support seat is provided at one side of the bottom of the adjustment assembly.

[0010] Further, in order to ensure the stability of the sealing effect of the valve body, the conical support seat includes a conical housing provided at the bottom end of the cylindrical housing. A number of through holes are provided at the bottom end of the conical housing. An inclined surface that cooperates with the through holes is provided inside the conical housing.

[0011] Further, in order to ensure the quality of the sealing effect of the valve body, the adjustment assembly includes a hollow fixed column provided at the inner bottom end of the conical housing. A limiting groove is provided on the circumferential outer side of the hollow fixed column. A sleeve connecting rod I that cooperates with the sealing disc is provided at the top end of the hollow fixed column. An active rod that cooperates with the sealing disc is provided inside the hollow fixed column; the shape of the limiting groove is a spiral shape, and the inside of the sleeve connecting rod I is a hollow structure and cooperates with the active rod.

[0012] Further, in order to improve the sealing effect of the valve body, the sealing disc includes a disc provided at the top end of the active rod. A sealing ring is sleeved on the circumferential outer side of the disc. A handle is provided at the top end of the disc.

[0013] Further, in order to ensure the cleanliness of the inclined surface, the cleaning assembly includes a sleeve connecting rod II provided at one side of the bottom of the active rod. One side of the sleeve connecting rod II is provided with a connecting rod through a torsion spring. One end of the connecting rod is provided with a cleaning plate that cooperates with the inclined surface through a torsion spring. Cleaning holes are provided on the outer side of the cleaning plate.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. Under the action of the conical support seat, the adjustment assembly and the sealing disc of the present utility model, it is ensured that the drilling fluid circulates in the wellbore, which can effectively prevent the leakage of the drilling fluid during the drilling process, and can also prevent the formation fluid from entering the drill string through the bit nozzle during a blowout.

[0016] 2. Under the action of the cleaning assembly of the present utility model, the inclined surface attached with particulate matter in the drilling fluid can be cleaned, reducing the wear generated when the sealing ring contacts the inclined surface, and improving the service life and performance of the valve body. Description of the Drawings

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a high-reliability petroleum drilling pump valve body according to an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view of a valve body of a petroleum drilling pump with high reliability according to an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 The utility model is a schematic diagram of the unfolded structure of the interior of a high-reliability oil drilling pump valve according to an embodiment of the utility model.

[0022] In the figure:

[0023] 1. Cylindrical shell; 2. Thread line; 3. Conical support seat; 301. Conical shell; 302. Through hole; 303. Inclined surface; 4. Adjustment assembly; 401. Hollow fixed column; 402. Limiting groove; 403. Sleeve connecting rod 1; 404. Movable rod; 5. Sealing disk; 501. Disc; 502. Sealing ring; 503. Handle; 6. Cleaning assembly; 601. Sleeve connecting rod 2; 602. Connecting rod; 603. Cleaning plate; 604. Cleaning hole. DETAILED DESCRIPTION

[0024] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0025] According to an embodiment of the utility model, a valve body of a petroleum drilling pump with high reliability is provided.

[0026] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figures 1 - 4As shown in the figure, the high-reliability valve body of an oil drilling pump according to an embodiment of the present invention includes a cylindrical housing 1. Thread lines 2 are provided at the outer bottom of the cylindrical housing 1. A conical support seat 3 is provided at the bottom end of the cylindrical housing 1. An adjusting assembly 4 is provided at the inner bottom end of the conical support seat 3. A sealing disk 5 that cooperates with the conical support seat 3 is provided at the top end of the adjusting assembly 4. A cleaning assembly 6 that cooperates with the conical support seat 3 is provided at one side of the bottom of the adjusting assembly 4.

[0027] With the above technical solution, under the action of the conical support seat 3, the adjusting assembly 4 and the sealing disk 5, the present invention ensures the circulation of drilling fluid in the wellbore, effectively preventing the leakage of drilling fluid during the drilling process. At the same time, it can also prevent formation fluids from entering the drill string through the bit nozzle during a blowout. Under the action of the cleaning assembly 6, the inclined surface attached with particulate matter in the drilling fluid can be cleaned, reducing the wear generated when the sealing ring 502 contacts the inclined surface 303, and improving the service life and performance of the valve body.

[0028] In addition, it should be noted that the conical support seat 3 and the sealing disk 5 are usually made of materials with characteristics such as wear resistance, corrosion resistance, heat conduction, impact resistance and reliability (such as stainless steel, alloy steel, ceramics, cemented carbide, etc.). This is because the valve body needs to withstand the impact of solid particles in the drilling fluid, chemical corrosion, high-pressure environment and the impact of sudden situations. This is prior art and will not be explained in detail here.

[0029] In one embodiment, for the above conical support seat 3, the conical support seat 3 includes a conical housing 301 provided at the bottom end of the cylindrical housing 1. A plurality of through holes 302 are provided at the bottom end of the conical housing 301. An inclined surface 303 that cooperates with the through holes 302 is provided inside the conical housing 301, thus ensuring the stability of the sealing effect of the valve body.

[0030] In one embodiment, for the above adjusting assembly 4, the adjusting assembly 4 includes a hollow fixed column 401 provided at the inner bottom end of the conical housing 301. A limiting groove 402 is provided on the circumferential outer side of the hollow fixed column 401. A sleeve connecting rod 403 that cooperates with the sealing disk 5 is provided at the top end of the hollow fixed column 401 (the hollow fixed column 401 is threadedly connected to the sleeve connecting rod 403, and the sleeve connecting rod 403 is threadedly connected to the sealing disk 5). An active rod 404 that cooperates with the sealing disk 5 is provided inside the hollow fixed column 401 (the active rod 404 is connected to the sealing disk 5 through a bearing). The shape of the limiting groove 402 is a spiral shape. The inside of the sleeve connecting rod 403 is a hollow structure and cooperates with the active rod 404, thus ensuring the quality of the sealing effect of the valve body.

[0031] The working principle of the adjusting component 4 is as follows: The piston in the oil drilling pump works, resulting in air pressure changes. Under the action of the air pressure changes, the sealing disc 5 rises vertically. Under the rising action of the sealing disc 5, the movable rod 404 rises vertically, and at the same time, the sleeve connecting rod one 403 elongates, stretching the spring on the thin rod in the sleeve connecting rod one 403; when the air pressure stops changing, under the reset action of the spring on the thin rod in the sleeve connecting rod one 403 and under the action of the self-weight of the sealing disc 5, the movable rod 404 descends vertically, and at the same time drives the sleeve connecting rod one 403 to shorten and return to the starting position, and makes the sealing ring 502 in the sealing disc 5 in close contact with the inclined surface 303 in the conical support seat 3.

[0032] In one embodiment, for the above-mentioned sealing disc 5, the sealing disc 5 includes a disc 501 provided at the top end of the movable rod 404. A sealing ring 502 is sleeved on the outer circumference of the disc 501, and a handle 503 is provided at the top end of the disc 501; thus improving the sealing effect of the valve body.

[0033] In one embodiment, for the above-mentioned cleaning component 6, the cleaning component 6 includes a sleeve connecting rod two 601 provided on one side of the bottom of the movable rod 404. One side of the sleeve connecting rod two 601 is provided with a connecting rod 602 through a torsion spring. One end of the connecting rod 602 is provided with a cleaning plate 603 that cooperates with the inclined surface 303 through a torsion spring. Cleaning holes 604 are opened on the outer side of the cleaning plate 603; thus ensuring the cleanliness of the inclined surface 303.

[0034] The working principle of the cleaning component 6 is as follows: The piston in the oil drilling pump works, resulting in air pressure changes. Under the action of the air pressure changes, under the rising action of the movable rod 404, the sleeve connecting rod two 601 is driven to rise along the spiral shape of the limiting groove 402 in the adjusting component 4. At the same time, the sleeve connecting rod two 601 and the movable rod 404 rotate along the inner side of the hollow fixed column 401 in the adjusting component 4. Under the rotating and rising action of the sleeve connecting rod two 601, the connecting rod 602 is driven to rotate and rise. Under the rotating and rising action of the connecting rod 602, the cleaning plate 603 is driven to rotate and rise along the inclined surface 303 in the conical support seat 3. At the same time, under the reset action of the spring on the thin rod in the sleeve connecting rod two 601, the sleeve connecting rod two 601 is continuously elongated, and under the cooperation of the torsion spring between the sleeve connecting rod two 601 and the connecting rod 602 and the torsion spring between the connecting rod 602 and the cleaning plate 603, the cleaning plate 603 can always be in close contact with the inclined surface 303, so that the cleaning plate 603 can remove the particulate matter adhering to the contact position between the sealing ring 502 and the inclined surface 303, and under the action of the cleaning holes 604, the situation of excessive dust accumulation on the cleaning plate 603 is avoided;

[0035] When the air pressure stops changing, under the action of the descending moving rod 404, the sleeve connecting rod two 601 in the cleaning assembly 6 descends along the spiral shape of the limiting groove 402 in the adjusting assembly 4. At the same time, the sleeve connecting rod two 601 and the moving rod 404 rotate along the inner side of the hollow fixed column 401 in the adjusting assembly 4. Under the action of the rotating and descending of the sleeve connecting rod two 601, the connecting rod 602 in the cleaning assembly 6 rotates and descends. Under the action of the rotating and descending of the connecting rod 602, the cleaning plate 603 rotates and descends along the inclined surface 303 in the conical support seat 3. At the same time, the sleeve connecting rod two 601 shortens, squeezing the spring on the thin rod in the sleeve connecting rod two 601 to make it return to the starting position.

[0036] To facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0037] In actual application, first, the conical support seat 3 is installed at the outlet end of the oil drilling pump through the thread 2. When the piston in the oil drilling pump works and causes air pressure changes, under the action of the air pressure change, the sealing disc 5 rises in the vertical direction. Under the rising action of the sealing disc 5, the moving rod 404 in the adjusting assembly 4 rises in the vertical direction. Under the rising action of the moving rod 404, the sleeve connecting rod two 601 in the cleaning assembly 6 rises along the spiral shape of the limiting groove 402 in the adjusting assembly 4. At the same time, the sleeve connecting rod two 601 and the moving rod 404 rotate along the inner side of the hollow fixed column 401 in the adjusting assembly 4. Under the action of the rotating and rising of the sleeve connecting rod two 601, the connecting rod 602 in the cleaning assembly 6 rotates and rises. Under the action of the rotating and rising of the connecting rod 602, the cleaning plate 603 rotates and rises along the inclined surface 303 in the conical support seat 3. At the same time, under the action of the spring reset on the thin rod in the sleeve connecting rod two 601, the sleeve connecting rod two 601 continuously elongates. With the cooperation of the torsion springs between the sleeve connecting rod two 601 and the connecting rod 602 and between the connecting rod 602 and the cleaning plate 603, the cleaning plate 603 can always be in close contact with the inclined surface 303, so that the cleaning plate 603 can remove the particulate matter attached to the contact position between the sealing ring 502 and the inclined surface 303. And under the action of the cleaning hole 604, the situation of excessive dust accumulation on the cleaning plate 603 is avoided;

[0038] When the air pressure stops changing, under the action of the descending movable rod 404, the sleeve connecting rod two 601 in the cleaning assembly 6 is driven to descend along the spiral shape of the limiting groove 402 in the adjusting assembly 4. At the same time, the sleeve connecting rod two 601 and the movable rod 404 rotate along the inner side of the hollow fixed column 401 in the adjusting assembly 4. Under the action of the rotational descent of the sleeve connecting rod two 601, the connecting rod 602 in the cleaning assembly 6 is driven to rotate and descend. Under the action of the rotational descent of the connecting rod 602, the cleaning plate 603 is driven to rotate and descend along the inclined plane 303 in the conical support seat 3. At the same time, the sleeve connecting rod two 601 is shortened, squeezing the spring on the thin rod in the sleeve connecting rod two 601 to return to the starting position, thus ensuring the stability of the next operation.

[0039] The working principles of the adjusting assembly 4 and the cleaning assembly 6 are as described above.

[0040] In summary, by means of the above technical solutions of the present invention, the present invention ensures the circulation of drilling fluid in the wellbore under the action of the conical support seat 3, the adjusting assembly 4 and the sealing disc 5, and can effectively prevent the leakage of drilling fluid during the drilling process. At the same time, it can also prevent formation fluids from entering the drill string through the bit nozzle during a blowout; under the action of the cleaning assembly 6, it can clean the inclined plane attached with particulate matter in the drilling fluid, reduce the wear generated when the sealing ring 502 contacts the inclined plane 303, and improve the service life and performance of the valve body.

[0041] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, 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 circumstances.

[0042] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-reliability petroleum drilling pump valve body, comprising a cylindrical housing (1), characterized in that: The outer bottom of the cylindrical shell (1) is provided with a thread line (2), the bottom end of the cylindrical shell (1) is provided with a conical support seat (3), the inner bottom end of the conical support seat (3) is provided with an adjustment component (4), the top end of the adjustment component (4) is provided with a sealing disk (5) that matches the conical support seat (3), and the bottom side of the adjustment component (4) is provided with a cleaning component (6) that matches the conical support seat (3).

2. A high reliability oil drilling pump valve body according to claim 1, characterized in that: The conical support seat (3) comprises a conical outer shell (301) arranged at the bottom end of the cylindrical outer shell (1), a plurality of through holes (302) are provided at the bottom end of the conical outer shell (301), and an inclined surface (303) matching the through holes (302) is provided on the inner side of the conical outer shell (301).

3. A high reliability oil drilling pump valve body according to claim 2, characterized in that: The adjustment assembly (4) comprises a hollow fixed column (401) arranged at the bottom end of the conical outer shell (301), a limiting groove (402) is provided on the outer circumference of the hollow fixed column (401), a sleeve connecting rod (403) matching with the sealing disk (5) is provided at the top end of the hollow fixed column (401), and a movable rod (404) matching with the sealing disk (5) is provided on the inner side of the hollow fixed column (401).

4. A high-reliability petroleum drilling pump valve body according to claim 3, characterized in that: The limiting groove (402) is in a spiral shape, and the interior of the sleeve connecting rod (403) is a hollow structure and is matched with the movable rod (404).

5. A high-reliability petroleum drilling pump valve body according to claim 4, characterized in that: The sealing disk (5) comprises a disk (501) arranged at the top end of the movable rod (404), a sealing ring (502) is sleeved on the outer circumference of the disk (501), and a handle (503) is arranged at the top end of the disk (501).

6. A high-reliability petroleum drilling pump valve body according to claim 5, characterized in that: The cleaning assembly (6) comprises a second sleeve connecting rod (601) arranged on one side of the bottom of the movable rod (404); a connecting rod (602) is arranged on one side of the second sleeve connecting rod (601) via a torsion spring; a cleaning plate (603) matching the inclined surface (303) is arranged on one end of the connecting rod (602) via a torsion spring; a cleaning hole (604) is provided on the outer side of the cleaning plate (603).

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