Air control reversing valve for oil drilling rig

Abstract

The utility model relates to the technical field of petroleum drilling rig, especially a pneumatic control reversing valve for petroleum drilling rig, it includes the valve cylinder for petroleum drilling rig, the right side fixed intercommunication of valve cylinder installs the air inlet pipe, the valve cylinder body inside is provided with the air control steering mechanism, the air control steering mechanism includes electric push rod and valve plate, and a plurality of folding rods are connected between electric push rod and valve plate, the upper through -hole is set up on the valve plate upside, the side through -hole is set up in the valve plate side edge, the built -in groove is set up in the valve plate inboard, the lower through -hole is set up in the valve plate bottom, the lower through -hole upside cover is equipped with the valve cover, the lower through -hole downside is provided with the top seat, and the top seat downside fixed mounting has the telescopic cylinder, the utility model discloses the air control steering mechanism through the setting, utilizes the telescopic amount control of control electric push rod, can realize the air outlet conversion action between first air outlet pipe and second air outlet pipe, simple structure, and the device is easy to disassemble, is convenient for the internal component of valve cylinder to overhaul and maintain in the later period, improves practicality.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling rig technology, and in particular to a pneumatically controlled directional valve for oil drilling rigs. Background Technology

[0002] In oil exploration and extraction operations, the pneumatic control directional valve is one of the core components of oil drilling rigs. It is mainly responsible for controlling the flow of compressed air, thereby driving various actuators of the drilling rig to complete complex actions such as drilling, hoisting, and rotation.

[0003] Existing pneumatically controlled directional valves, in pursuit of multifunctionality and high-precision control, often employ complex structures. For example, some directional valves integrate multiple control components, intricate pneumatic passage layouts, and precision sealing structures. These complex structures not only increase manufacturing difficulty and cost but also result in a compact internal space and complex assembly relationships between components. In the event of a malfunction, maintenance personnel struggle to quickly locate the fault, and due to the difficulty in disassembling internal components, targeted repairs of the faulty part are impossible. Often, the entire directional valve needs to be disassembled or even replaced, significantly increasing maintenance costs and downtime, severely impacting the continuity of oil extraction operations.

[0004] Therefore, it is necessary to propose a pneumatically controlled directional valve for oil drilling rigs that can accurately and quickly switch the gas outlet direction, while also featuring a simple structure and easily detachable internal components for maintenance and repair. To this end, we propose a pneumatically controlled directional valve for oil drilling rigs. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a pneumatically controlled directional valve for oil drilling rigs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pneumatically controlled directional valve for an oil drilling rig includes a valve cylinder for use in the oil drilling rig. An air inlet pipe is fixedly connected to the right side of the valve cylinder. A pneumatically controlled steering mechanism is provided inside the valve cylinder body. The pneumatically controlled steering mechanism includes an electric push rod and a valve plate. Several folding rods are connected between the electric push rod and the valve plate. An upper through hole is provided on the upper side of the valve plate, a side through hole is provided on the side of the valve plate, an internal groove is provided on the inner side of the valve plate, and a lower through hole is provided at the bottom of the valve plate. A valve cover is provided on the upper side of the lower through hole, a top seat is provided on the lower side of the lower through hole, and a telescopic cylinder is fixedly installed on the lower side of the top seat. The lower end of the telescopic cylinder is fixedly connected to the valve cover, and a compression spring is sleeved on the outer side of the telescopic cylinder. The valve plate slides in contact with the inner side of the valve cylinder.

[0008] Furthermore, the circumference of the folding rod is equidistant from the outer perimeter of the upper through hole.

[0009] By adopting the above technical solution, the folding rod provides a connection and fixation function between the electric push rod and the valve plate, preventing the lower end of the electric push rod from blocking the upper through hole.

[0010] Furthermore, several diagonal rods are fixedly connected between the bottom outer side of the upper through hole and the top seat.

[0011] Furthermore, the valve plate has symmetrically provided side grooves on the upper and lower sides of its outer ring, and a sealing ring is fitted inside the side groove.

[0012] By adopting the above technical solution, the sealing ring ensures the sealing performance between the valve plate and the inner wall of the valve cylinder.

[0013] Furthermore, the sealing ring is made of fluororubber.

[0014] Furthermore, a first air outlet pipe is fixedly installed on the left side of the valve cylinder, and the side through hole is aligned with the inner end of the first air outlet pipe.

[0015] By adopting the above technical solution, when the valve plate is positioned such that the side through hole is aligned with the inner end of the first air outlet pipe, the first air outlet pipe remains in a conductive state.

[0016] Furthermore, a top plate and a bottom plate are symmetrically screwed onto the upper and lower sides of the valve cylinder, respectively, and the electric push rod is fixedly installed at the bottom of the top plate.

[0017] Furthermore, a second vent pipe is fixedly installed on the lower side of the base plate, and a mating component is provided inside the second vent pipe.

[0018] By adopting the above technical solution, the top plate provides a supporting connection for the electric push rod.

[0019] Furthermore, the mating component includes a bottom hole, which is located at the center of the base plate and has an abutment rod inside the bottom hole. Several connecting rods are fixedly connected between the abutment rod and the base plate, and the abutment rod is located directly below the valve cover.

[0020] Furthermore, a power interface is fixedly installed on the side wall of the valve cylinder.

[0021] By adopting the above technical solution, the power interface is used to provide power to the internal electric push rod via an external power source.

[0022] Compared with related technologies, the pneumatically controlled directional valve for oil drilling rigs proposed in this utility model has the following advantages:

[0023] In this utility model, a pneumatically controlled directional valve for an oil drilling rig utilizes a pneumatically controlled steering mechanism. This mechanism facilitates gas delivery within the cylinder. An electric push rod drives the valve body to slide within the cylinder. When the valve body moves upward, the side through-hole on the side of the valve body is misaligned with the first vent pipe, keeping the entire cylinder's air path disconnected. When the sliding valve plate aligns the side through-hole with the first vent pipe, the first vent pipe opens. Further downward pressure on the valve plate drives the valve body downward, gradually misaligning the side through-hole with the first vent pipe. At this time, the contact rod gradually opens the valve cover, causing the lower through hole to open gradually. As a result, the air output of the second vent pipe gradually increases, while the air output of the first vent pipe gradually decreases. When the side through hole and the first vent pipe are completely misaligned, the first vent pipe closes, and the second vent pipe becomes the only exhaust port of the valve cylinder. By precisely controlling the extension and retraction of the electric push rod, the air output switching action between the first and second vent pipes can be realized. The structure is simple, and the device is easy to disassemble, which facilitates the later inspection and maintenance of the internal components of the valve cylinder, thus improving its practicality. Attached Figure Description

[0024] Figure 1 A three-dimensional structural diagram of a pneumatically controlled directional valve for an oil drilling rig proposed in this utility model. Figure 1 ;

[0025] Figure 2 A three-dimensional structural diagram of a pneumatically controlled directional valve for an oil drilling rig proposed in this utility model. Figure 2 ;

[0026] Figure 3 This is a three-dimensional cross-sectional structural diagram of a pneumatically controlled directional valve for an oil drilling rig proposed in this utility model;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of the base plate;

[0028] Figure 5 This is a three-dimensional cross-sectional schematic diagram of the pneumatic steering mechanism.

[0029] In the diagram: 1. Valve cylinder; 2. Inlet pipe; 3. First outlet pipe; 4. Second outlet pipe; 5. Top plate; 6. Bottom plate; 7. Mating assembly; 71. Bottom hole; 72. Abutment rod; 73. Connecting rod; 8. Power interface; 9. Pneumatic steering mechanism; 91. Electric push rod; 92. Folding rod; 93. Valve plate; 94. Upper through hole; 95. Side groove; 96. Sealing ring; 97. Internal groove; 98. Side through hole; 99. Lower through hole; 910. Diagonal rod; 911. Top seat; 912. Telescopic cylinder; 913. Compression spring; 914. Valve cover. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0031] Reference Figures 1-5 A pneumatically controlled directional valve for an oil drilling rig includes a valve cylinder 1 for the oil drilling rig. An air inlet pipe 2 is fixedly connected to the right side of the valve cylinder 1. A pneumatically controlled steering mechanism 9 is provided inside the cylinder body of the valve cylinder 1. The pneumatically controlled steering mechanism 9 includes an electric push rod 91 and a valve plate 93. Several folding rods 92 are connected between the electric push rod 91 and the valve plate 93. An upper through hole 94 is opened on the upper side of the valve plate 93. A side through hole 98 is opened on the side of the valve plate 93. An internal groove 97 is opened on the inner side of the valve plate 93. A lower through hole 99 is opened at the bottom of the valve plate 93. A valve cover 914 is provided on the upper side of the lower through hole 99. A top seat 911 is provided on the lower side of the lower through hole 99. A telescopic cylinder 912 is fixedly installed on the lower side of the top seat 911. The lower end of the telescopic cylinder 912 is fixedly connected to the valve cover 914. A compression spring 913 is sleeved on the outer side of the telescopic cylinder 912. The valve plate 93 slides in contact with the inner side of the valve cylinder 1.

[0032] In this embodiment, a top plate 5 and a bottom plate 6 are symmetrically screwed onto the upper and lower sides of the valve cylinder 1, respectively. An electric push rod 91 is fixedly installed at the bottom of the top plate 5. A second air outlet pipe 4 is fixedly installed on the lower side of the bottom plate 6. A mating component 7 is provided inside the second air outlet pipe 4.

[0033] With the above structure, when the valve cover 914 is opened, the lower through hole 99 is opened, and the second exhaust pipe can then exhaust gas.

[0034] In this embodiment, the mating component 7 includes a bottom hole 71, which is located at the center of the base plate 6 and has an abutment rod 72 inside. A plurality of connecting rods 73 are fixedly connected between the abutment rod 72 and the base plate 6. The abutment rod 72 is located directly below the valve cover 914.

[0035] With the above structure, the valve cover 914 abuts against the upper side of the lower through hole 99 under the rebound force of the compression spring 913, thereby sealing and closing the lower through hole 99. When the valve plate 93 moves downward, the valve cover 914 is pushed upward by the abutment rod 72, causing the lower through hole 99 to gradually open.

[0036] In this embodiment, the folding rod 92 is equidistantly positioned around the upper through hole 94, and several inclined rods 910 are fixedly connected between the bottom outer side of the upper through hole 94 and the top seat 911.

[0037] With the above structure, both the folding rod 92 and the diagonal rod 910 provide lateral fixing connection, avoiding the connection point from obstructing the center position of the upper through hole 94.

[0038] In this embodiment, the valve plate 93 has symmetrically provided side grooves 95 on the upper and lower sides of the outer ring, and a sealing ring 96 is fitted inside the side groove 95. The sealing ring 96 is made of fluororubber.

[0039] Through the above structure, fluororubber is resistant to high temperature, chemical corrosion (including acids, alkalis, solvents, etc.), has excellent oil resistance, can withstand extreme environments, and has a long service life.

[0040] In this embodiment, a first air outlet pipe 3 is fixedly installed on the left side of the valve cylinder 1, and the side through hole 98 is aligned with the inner end of the first air outlet pipe 3.

[0041] With the above structure, the side through hole 98 is aligned with the inner end of the first exhaust pipe 3. At this time, the inner end of the first exhaust pipe 3 is opened to its maximum extent, and the first exhaust pipe 3 is the exhaust end.

[0042] In this embodiment, a power interface 8 is fixedly installed on the side wall of the valve cylinder 1.

[0043] Through the above structure, the power interface 8 is connected to an external power source to provide power to the internal components.

[0044] In this utility model, during use, in the initial state, the valve plate 93 is located on the upper side inside the valve cylinder 1. At this time, the side through hole 98 is not misaligned with the inner end of the first air outlet pipe 3, and the first air outlet pipe 3 is in a closed state. At the same time, the valve cover 914 is tightly pressed against the upper side of the lower through hole 99 under the action of the rebound force of the compression spring 913, sealing and closing the lower through hole 99. The second air outlet pipe 4 is also in a closed state. The air passage inside the entire valve cylinder 1 is disconnected, and the compressed air delivered by the air inlet pipe 2 cannot be discharged from any air outlet pipe.

[0045] The opening process of the first exhaust pipe 3: When the first exhaust pipe 3 needs to exhaust, the external power supply supplies power to the electric push rod 91 through the power interface 8. The electric push rod 91 begins to extend and drives the valve plate 93 to slide upward inside the valve cylinder 1 through the circumferentially distributed bending rod 92 around the upper through hole 94. As the valve plate 93 moves downward, the side through hole 98 on its side gradually aligns with the inner end of the first exhaust pipe 3. When the side through hole 98 is completely aligned with the inner end of the first exhaust pipe 3, the opening of the inner end of the first exhaust pipe 3 reaches its maximum. The compressed air delivered by the intake pipe 2 is discharged from the first exhaust pipe 3 through the internal space of the valve cylinder 1 and the side through hole 98 on the valve plate 93, realizing the conduction of the first exhaust pipe 3 and providing power to the corresponding actuator of the oil drilling rig.

[0046] Air outlet direction switching process: If it is necessary to switch the air outlet direction from the first air outlet pipe 3 to the second air outlet pipe 4, the electric push rod 91 continues to extend, further pressing down the valve plate 93 to move it downward. During the downward movement of the valve plate 93, the side through hole 98 gradually shifts away from the inner end of the first air outlet pipe 3, and the air outlet volume of the first air outlet pipe 3 begins to gradually decrease. At the same time, the abutment rod 72 located inside the bottom hole 71 of the base plate 6 gradually pushes the valve cover 914 upward, the compression spring 913 is compressed, the lower through hole 99 gradually opens, and the air outlet volume of the second air outlet pipe 4 gradually increases.

[0047] Second exhaust pipe 4 in independent exhaust state: As the electric push rod 91 continues to extend, when the side through hole 98 is completely misaligned with the first exhaust pipe 3, the first exhaust pipe 3 is closed. At this time, the lower through hole 99 is fully opened, and the second exhaust pipe 4 becomes the only exhaust port of the valve cylinder 1. All the compressed air input by the intake pipe 2 is discharged from the second exhaust pipe 4 through the lower through hole 99, providing compressed air for other actuators of the oil drilling rig and completing the switching of the exhaust direction.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pneumatically controlled directional valve for an oil drilling rig, characterized in that, Includes a valve cylinder (1) for oil drilling rigs, wherein an air inlet pipe (2) is fixedly connected to the right side of the valve cylinder (1), and a pneumatic steering mechanism (9) is provided inside the cylinder body of the valve cylinder (1); The pneumatic steering mechanism (9) includes an electric push rod (91) and a valve plate (93). Several folding rods (92) are connected between the electric push rod (91) and the valve plate (93). The valve plate (93) has an upper through hole (94) on its upper side and a side through hole (98) on its side. The valve plate (93) has an inner groove (97) on its inner side and a lower through hole (99) at its bottom. A valve cover (914) is provided on the upper side of the lower through hole (99). A top seat (911) is provided on the lower side of the lower through hole (99). A telescopic cylinder (912) is fixedly installed on the lower side of the top seat (911). The lower end of the telescopic cylinder (912) is fixedly connected to the valve cover (914). A compression spring (913) is sleeved on the outer side of the telescopic cylinder (912). The valve plate (93) slides in contact with the inner side of the valve cylinder (1).

2. The pneumatically controlled directional valve for an oil drilling rig according to claim 1, characterized in that, The circumference of the folding rod (92) is equidistant from the outer periphery of the upper through hole (94).

3. The pneumatically controlled directional valve for an oil drilling rig according to claim 1, characterized in that, Several diagonal rods (910) are fixedly connected between the bottom outer side of the upper through hole (94) and the top seat (911).

4. The pneumatically controlled directional valve for an oil drilling rig according to claim 1, characterized in that, The valve plate (93) has symmetrically provided side grooves (95) on the upper and lower sides of the outer ring, and a sealing ring (96) is fitted inside the side groove (95).

5. A pneumatically controlled directional valve for an oil drilling rig according to claim 4, characterized in that, The sealing ring (96) is made of fluororubber.

6. The pneumatically controlled directional valve for an oil drilling rig according to claim 1, characterized in that, The valve cylinder (1) is fixedly connected to the left side of the first air outlet pipe (3), and the side through hole (98) is aligned with the inner end of the first air outlet pipe (3).

7. The pneumatically controlled directional valve for an oil drilling rig according to claim 1, characterized in that, The valve cylinder (1) is symmetrically screwed with a top plate (5) and a bottom plate (6) on its upper and lower sides, respectively, and the electric push rod (91) is fixedly installed at the bottom of the top plate (5).

8. A pneumatically controlled directional valve for an oil drilling rig according to claim 7, characterized in that, A second vent pipe (4) is fixedly installed on the lower side of the base plate (6), and a mating component (7) is provided inside the second vent pipe (4).

9. A pneumatically controlled directional valve for an oil drilling rig according to claim 8, characterized in that, The mating component (7) includes a bottom hole (71), which is located at the center of the base plate (6) and an abutment rod (72) is provided inside the bottom hole (71). A plurality of connecting rods (73) are fixedly connected between the abutment rod (72) and the base plate (6). The abutment rod (72) is located directly below the valve cover (914).

10. A pneumatically controlled directional valve for an oil drilling rig according to claim 1, characterized in that, A power interface (8) is fixedly installed on the side wall of the valve cylinder (1).

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