Oil exploitation regulating valve

Abstract

The utility model provides an oil exploitation regulating valve which comprises a regulating valve body, a sealing assembly is arranged in a sealing cover, a lubricating assembly is arranged in a connecting base, and when the sealing cover is installed in place, an extrusion block can be inserted into a limiting cavity and extrudes and pushes an extrusion sheet inwards through a pushing rod; according to the oil injection device, the extrusion piece moves towards the inner side to extrude the sealing ring, and the extruded sealing ring can be further tightly attached to the sealing cover, the valve rod and the connecting base, so that the sealing performance between the valve rod and the sealing cover and between the valve rod and the connecting base is better, and external stains or rainwater is prevented from entering the connecting base and the valve body; and the injected lubricating oil can enter the lubricating cavity through the oil guide cavity, so that the lubricating oil in the lubricating cavity lubricates the valve rod in contact with the lubricating cavity, and the valve rod is smoother and more labor-saving during rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves for oil production, in particular to a regulating valve for oil production. Background Art

[0002] A regulating valve, also known as a control valve, is a final control element that changes process parameters such as medium flow, pressure, temperature, and liquid level. It is generally composed of an actuator and a valve. During oil production, a regulating valve is usually connected at a specified position on the oil production pipe to control the flow rate in the pipe.

[0003] Announcement No. "CN216407742U" provides an oil production regulating valve, which transmits the valve body pressure to the bottom of the diaphragm through the setting of a through hole and a diaphragm, forming an opposition with the first spring to achieve rapid closing of the valve plug, thereby achieving rapid sealing of the valve body. Through the setting of the second spring, the valve plug can achieve a rapid reset effect after the valve stem moves up and down, thereby achieving rapid sealing of the valve body. Through the setting of the baffle, when the oil flows into the valve body, the impact force of the flow rate on the valve stem is reduced, preventing the instantaneous flow rate of the fluid from being too large and the valve stem from shaking, thereby improving the overall stability of the device.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] Although the regulating valve reduces the impact of the flow rate on the valve stem when the oil flows into the valve body through the setting of the baffle, thereby preventing the instantaneous flow rate of the fluid from being too high, the sealing performance of the first flange connection in the regulating valve is poor, resulting in external rainwater and stains easily penetrating into the valve body through the first flange connection, causing rust to the internal structure of the valve body. Secondly, the regulating valve does not have a corresponding lubrication structure to lubricate the upper half of the valve stem, resulting in large resistance and difficulty in rotating the valve stem. Utility Model Content

[0006] The purpose of the utility model is to provide a petroleum production regulating valve to solve the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A petroleum production regulating valve includes a connecting flange, a regulating valve body, a connecting seat, a sealing cover, a turntable and a valve stem, wherein the left and right end faces of the regulating valve body are fixedly connected to the connecting flange, the upper side of the annular side face of the regulating valve body is fixedly connected to the connecting seat, the upper end face of the connecting seat is installed with a sealing cover, the interior of the connecting seat is installed with a valve stem, the upper end face of the valve stem is provided with a turntable, the interior of the sealing cover is provided with a sealing assembly, and the sealing assembly is used to improve the sealing between the sealing cover, the connecting seat and the valve stem, the interior of the connecting seat is provided with a lubrication assembly, and the lubrication assembly is used to lubricate the valve stem.

[0009] Preferably, the sealing assembly includes an extrusion block, a push rod, a guide cavity, a sealing ring and an extrusion sheet. A sealing ring is embedded in the lower end face of the sealing cover, a guide cavity is opened on the lower side of the interior of the sealing cover, an extrusion sheet is inserted into the guide cavity, a push rod is provided in the middle position of the right end face of the extrusion sheet, and extrusion blocks are symmetrically provided on the left and right sides and the front and back sides of the upper end face of the connecting seat.

[0010] Preferably, the lubrication assembly includes a lubrication chamber, an oil injection elbow, an oil guide chamber and a sealing cap. The oil injection elbow is fixedly connected to the left side of the annular side of the connecting seat, and a sealing cap is installed on the upper end of the oil injection elbow. A lubrication chamber is opened on the upper side of the interior of the connecting seat, and an oil guide chamber is opened between the lubrication chamber and the oil injection elbow.

[0011] Preferably, a communicating hole is opened on the right side inside the regulating valve body, and the communicating hole is connected to the lubrication cavity, and a transparent glass sheet is bonded and fixed to the right side of the annular side surface of the connecting seat.

[0012] Preferably, a sealing sheet is installed inside the blocking cap, the blocking cap is connected to the oil injection elbow through a threaded connection, and the lubrication cavity is in the shape of a circular ring.

[0013] Preferably, the sealing cover has symmetrically provided limit cavities on the left and right sides and the front and back sides, and the limit cavities match the extrusion block. The upper end face of the extrusion block is trapezoidal, the right end of the push rod is inclined, and the guide cavity matches the extrusion sheet.

[0014] Preferably, mounting screws are symmetrically installed on the left and right sides and the front and back sides of the sealing cover, internal threaded holes are symmetrically opened on the left and right sides and the front and back sides of the upper end surface of the connecting seat, and the internal threaded holes match the mounting screws, an internal threaded through cavity is opened inside the connecting seat, and the internal threaded through cavity matches the valve stem, and a sealing ring is embedded in the end face of the connecting flange.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When the sealing cover is installed in place, the extrusion block will be inserted into the limit cavity and the extrusion piece will be squeezed inward by the push rod, so that the extrusion piece moves inward to squeeze the sealing ring, and the squeezed sealing ring will further fit tightly with the sealing cover, valve stem and connecting seat, thereby improving the sealing between the valve stem, sealing cover and connecting seat, and preventing external stains or rainwater from entering the connecting seat and the inside of the valve body;

[0017] 2. By injecting an appropriate amount of lubricating oil into the oil injection elbow, the injected lubricating oil can enter the lubrication chamber through the oil guide chamber, so that the lubricating oil in the lubrication chamber can lubricate the contacting valve stem, making the valve stem smoother and more labor-saving when rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a front cross-sectional view of the lubrication component and the sealing component in the present utility model;

[0020] Figure 3 for Figure 2 A magnified view of middle A;

[0021] Figure 4 This is a structural diagram of the connecting seat in the utility model;

[0022] Figure 5 This is a structural diagram of the push rod, sealing ring and extrusion sheet in the utility model.

[0023] In the figure: 1. Connecting flange; 11. Sealing ring; 2. Regulating valve body; 3. Connecting seat; 31. Internal threaded hole; 32. Internal threaded through cavity; 4. Sealing cover; 41. Mounting screw; 5. Turntable; 6. Valve stem; 71. Lubrication cavity; 72. Oil injection elbow; 73. Oil guide cavity; 74. Blocking cap; 75. Sealing sheet; 76. Connecting hole; 77. Transparent glass sheet; 81. Extrusion block; 82. Limiting cavity; 83. Push rod; 84. Guide cavity; 85. Sealing ring; 86. Extrusion sheet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Example 1:

[0027] When the regulating valve body 2 is in the state of being oil-producing, the regulating valve body 2 is in the state of being oil-producing.

[0028] A sealing component is provided inside the sealing cover 4, and the sealing component is used to improve the sealing between the sealing cover 4 and the connecting seat 3 and the valve stem 6, to prevent external dust or rainwater from entering the regulating valve body 2 through the gap between the connecting seat 3 and the valve stem 6. A lubricating component is provided inside the connecting seat 3, and the lubricating component is used to lubricate the valve stem 6, so that the valve stem 6 has better smoothness when rotating, thereby making the valve stem 6 more labor-saving when rotating. Mounting screws 41 are symmetrically installed on the left and right sides and the front and back sides of the sealing cover 4, and internal threaded holes 31 are symmetrically opened on the left and right sides and the front and back sides of the upper end surface of the connecting seat 3, and the internal threaded holes 31 are symmetrically connected to the mounting screws 41. The screws 41 match, and the matching internal threaded holes 31 and the mounting screws 41 can fix the sealing cover 4 on the upper end face of the connecting seat 3. An internal threaded cavity 32 is provided inside the connecting seat 3, and the internal threaded cavity 32 matches the valve stem 6. The annular side of the valve stem 6 is provided with an external thread, and the external thread is engaged with the internal threaded cavity 32. The engaged external thread and the internal threaded cavity 32 enable the valve stem 6 to have the ability to move up and down when rotating. A sealing ring 11 is embedded in the end face of the connecting flange 1. The sealing ring 11 is made of fluororubber. The sealing ring 11 made of fluororubber makes the sealing between the connecting flange 1 and the external oil production pipe better.

[0029] The sealing assembly includes an extrusion block 81, a push rod 83, a guide cavity 84, a sealing ring 85 and an extrusion piece 86. A sealing ring 85 is embedded in the lower end surface of the sealing cover 4. The sealing ring 85 is made of carbon fiber packing. The sealing ring 85 made of carbon fiber packing not only has good sealing performance, but also has excellent wear resistance and chemical stability, so as to seal the valve stem 6, the sealing cover 4 and the connecting seat 3. A guide cavity 84 is opened on the lower side of the sealing cover 4. The guide cavity 84 matches the extrusion piece 86. The guide cavity 84 can limit and guide the extrusion piece 86 to prevent the extrusion piece 86 from deflecting or shaking during use. An extrusion piece 86 is inserted into the guide cavity 84. The extrusion piece 86 is arc-shaped. The extrusion piece 86 and the push rod 83 are an integrated structure. The extrusion piece 86 with an arc-shaped shape can squeeze the sealing ring 85 during the inward movement.

[0030] A push rod 83 is provided in the middle position of the right end face of the extrusion piece 86, and the right end of the push rod 83 is inclined. Extrusion blocks 81 are symmetrically provided on the left and right sides and the front and back sides of the upper end face of the connecting seat 3. The upper end face shape of the extrusion block 81 is trapezoidal. The extrusion block 81 with a trapezoidal upper end face shape can squeeze and push the push rod 83 with an inclined right end inward. The limiting cavity 82 is symmetrically provided on the left and right sides and the front and back sides inside the sealing cover 4, and the limiting cavity 82 matches the extrusion block 81. The limiting cavity 82 not only facilitates the extrusion block 81 to be inside the sealing cover 4, but also enables the extrusion block 81 to limit the sealing cover 4, thereby avoiding misalignment of the sealing cover 4 during installation.

[0031] Example 2:

[0032] On the basis of Example 1, in this embodiment, by injecting a proper amount of lubricating oil into the oil injection elbow 72, the injected lubricating oil can enter the lubrication chamber 71 through the oil guide chamber 73, so that the lubricating oil in the lubrication chamber 71 lubricates the contacting valve stem 6, thereby making the valve stem 6 smoother and more labor-saving when rotating.

[0033] The lubrication assembly includes a lubrication chamber 71, an oil injection elbow 72, an oil guide chamber 73 and a sealing cap 74. The oil injection elbow 72 is fixedly connected to the left side of the annular side of the connecting seat 3. The oil injection elbow 72 is connected to the connecting seat 3 by welding. The oil injection elbow 72 facilitates the staff to inject lubricating oil into the oil guide chamber 73 and the lubrication chamber 71. A sealing cap 74 is installed on the upper end of the oil injection elbow 72. The sealing cap 74 can seal the upper end opening of the oil injection elbow 72. A lubrication chamber 71 is opened on the upper side of the connecting seat 3. The lubrication chamber 71 is in the shape of a circular ring. The lubrication chamber 71 in the shape of a circular ring can store a certain amount of lubricating oil so that the lubricating oil can lubricate the annular side of the valve stem 6 that moves up and down.

[0034] An oil guide chamber 73 is provided between the lubrication chamber 71 and the oil injection elbow 72. The oil guide chamber 73 can guide the lubricating oil in the oil injection elbow 72 into the lubrication chamber 71. A connecting hole 76 is provided on the right side of the regulating valve body 2, and the connecting hole 76 is connected to the lubrication chamber 71. A transparent glass piece 77 is bonded and fixed to the right side of the annular side of the connecting seat 3. The connecting hole 76 makes it convenient for the staff to observe the oil level inside the lubrication chamber 71 through the transparent glass piece 77. A sealing strip is bonded and fixed to the inner wall of the transparent glass piece 77. The sealing strip makes the sealing between the transparent glass piece 77 and the connecting seat 3 better. A sealing piece 75 is installed inside the sealing cap 74. The sealing piece 75 makes the sealing between the sealing cap 74 and the oil injection elbow 72 better. The sealing cap 74 is connected to the oil injection elbow 72 by a threaded connection. The sealing cap 74 connected to the oil injection elbow 72 by a threaded connection is convenient for later disassembly and assembly.

[0035] Working principle: When the sealing cover 4 is fixed to the upper end surface of the connecting seat 3 by means of the mounting screws 41 and the internal threaded holes 31, the extrusion block 81 will be inserted into the limiting cavity 82, and at the same time, the extrusion block 81 with a trapezoidal upper end surface will squeeze and push the extrusion piece 86 inwards through the push rod 83, so that the extrusion pieces 86 on the left and right sides and the front and back sides move inwards to squeeze the sealing ring 85, and the squeezed sealing ring 85 will further fit tightly with the sealing cover 4, the valve stem 6 and the connecting seat 3, thereby improving the sealing between the valve stem 6 and the sealing cover 4 and the connecting seat 3, and preventing external stains or rainwater from entering the interior of the connecting seat 3; when the staff loosens and disassembles the blocking cap 74, Then, an appropriate amount of lubricating oil can be injected into the oil filling elbow 72, and the injected lubricating oil will enter the lubricating chamber 71 through the oil guide chamber 73, so that the lubricating oil in the lubricating chamber 71 can lubricate the contacting valve stem 6, making the valve stem 6 smoother and more labor-saving when rotating. After the required amount of lubricating oil is injected into the oil filling elbow 72, the sealing cap 74 can be installed and fixed on the upper end face of the oil filling elbow 72 again to seal it. Later, the staff only needs to use the transparent glass sheet 77 and the connecting hole 76 to know whether the lubricating oil in the lubricating chamber 71 is consumed. When the lubrication in the lubricating chamber 71 is consumed, it is only necessary to remove the sealing cap 74 again to replenish oil into the oil filling elbow 72.

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A petroleum production regulating valve, comprising a connecting flange (1), a regulating valve body (2), a connecting seat (3), a sealing cover (4), a rotating disk (5) and a valve stem (6), characterized in that: The left and right end surfaces of the regulating valve body (2) are fixedly connected to connecting flanges (1), the upper side of the annular side surface of the regulating valve body (2) is fixedly connected to a connecting seat (3), the upper end surface of the connecting seat (3) is mounted with a sealing cover (4), the interior of the connecting seat (3) is mounted with a valve stem (6), and the upper end surface of the valve stem (6) is provided with a rotary disk (5); A sealing assembly is provided inside the sealing cover (4), and the sealing assembly is used to improve the sealing performance between the sealing cover (4), the connecting seat (3), and the valve stem (6). A lubricating assembly is provided inside the connecting seat (3), and the lubricating assembly is used to lubricate the valve stem (6).

2. The oil production regulating valve according to claim 1, characterized in that: The sealing assembly comprises an extrusion block (81), a push rod (83), a guide cavity (84), a sealing ring (85) and an extrusion sheet (86); the sealing ring (85) is embedded in the lower end surface of the sealing cover (4); a guide cavity (84) is opened on the lower side of the interior of the sealing cover (4); an extrusion sheet (86) is inserted into the interior of the guide cavity (84); a push rod (83) is provided at the middle position of the right end surface of the extrusion sheet (86); and extrusion blocks (81) are symmetrically provided on the left and right sides and the front and rear sides of the upper end surface of the connecting seat (3).

3. The oil production regulating valve according to claim 1, characterized in that: The lubrication assembly comprises a lubrication cavity (71), an oil injection elbow (72), an oil guide cavity (73) and a blocking cap (74); the oil injection elbow (72) is fixedly connected to the left side of the annular side of the connecting seat (3); the upper end of the oil injection elbow (72) is mounted with a blocking cap (74); the lubrication cavity (71) is provided on the upper side of the interior of the connecting seat (3); and the oil guide cavity (73) is provided between the lubrication cavity (71) and the oil injection elbow (72).

4. The oil production regulating valve according to claim 3, characterized in that: A communicating hole (76) is provided on the right side of the regulating valve body (2), and the communicating hole (76) is connected to the lubrication cavity (71). A transparent glass sheet (77) is bonded and fixed to the right side of the annular side surface of the connecting seat (3).

5. The oil production regulating valve according to claim 3, characterized in that: A sealing sheet (75) is installed inside the blocking cap (74), and the blocking cap (74) is connected to the oil injection elbow (72) through a threaded connection. The lubrication cavity (71) is in the shape of a circular ring.

6. The oil production regulating valve according to claim 2, characterized in that: The sealing cover (4) has symmetrically provided limiting cavities (82) on both the left and right sides and the front and rear sides, and the limiting cavities (82) match the extrusion block (81). The upper end surface of the extrusion block (81) is trapezoidal in shape. The right end of the push rod (83) is inclined, and the guide cavity (84) matches the extrusion sheet (86).

7. The oil production regulating valve according to claim 1, characterized in that: The sealing cover (4) is symmetrically provided with mounting screws (41) on both left and right sides and front and back sides. The upper end surface of the connecting seat (3) is symmetrically provided with internal threaded holes (31) on both left and right sides and front and back sides, and the internal threaded holes (31) match the mounting screws (41). The connecting seat (3) is provided with an internal threaded cavity (32) and the internal threaded cavity (32) matches the valve stem (6). The end surface of the connecting flange (1) is embedded with a sealing ring (11).

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