Hydraulic mud gate valve

Abstract

The utility model discloses a hydraulic mud gate valve, which relates to the technical field of gate valves, and comprises two valve pipes, a gate frame is fixedly arranged on the opposite sides of the two valve pipes, a support frame is fixedly arranged at the top of the gate frame, a hydraulic cylinder is fixedly arranged at the top of the support frame, and the hydraulic cylinder is fixedly arranged at the bottom of the hydraulic cylinder. The bottom end of a telescopic rod of the hydraulic cylinder extends to the lower side of the supporting frame and is fixedly provided with a gate sealing plate. The hydraulic cylinder drives the gate sealing plate to move downwards, the silica gel ring at the bottom of the gate sealing plate buffers impact force generated between the gate sealing plate and a valve pipe when the hydraulic cylinder drives the gate sealing plate to move downwards, meanwhile, the plate shaped like the Chinese character'zhong 'moves to the upper side of the gate frame, and two sealing rubber strips move into a sealing groove. And the two limiting rods drive the two baffles to move downwards to make contact with the top of the supporting frame, then the impact force generated when the gate sealing plate is moved to the inner wall of the gate frame is reduced, and the possibility that the mud gate valve is damaged is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, and in particular to a hydraulic mud gate valve. Background Technology

[0002] In the process of oil drilling, high-pressure mud is usually continuously supplied to the drill bit downhole to cool it and dilute and agitate the drilled rock powder. The mud is then carried out of the wellhead by the circulating mud. During the installation and removal of drill pipes, and during tripping in and out of the well, when the drill pipe stops rotating, the mud supply needs to be stopped in time to stop the mud circulation in the well, so as to avoid mud jetting and waste, and to prevent serious accidents involving equipment and personnel. This requires the use of mud gate valves to frequently open and close, so as to effectively control the flow of mud in real time.

[0003] There are two existing control methods for mud gate valves: manual and automatic. Manually controlled mud gate valves have a simpler structure and more reliable opening and closing switching action. However, they are labor-intensive and their operation is less sensitive due to factors such as the transmission and reception of commands and the operator's mental and emotional state. Automatic mud gate valves are more sensitive and can be operated remotely. However, they are subject to greater impact from high-pressure air control or hydraulic oil control, which can easily damage components and shorten their service life. Utility Model Content

[0004] To improve upon the aforementioned manually controlled mud gate valve, which has a simple structure and high reliability in opening and closing, but suffers from high labor intensity and poor sensitivity due to factors such as the transmission and reception of commands and the operator's mental and emotional state, the automatic mud gate valve offers more sensitive operation and can be operated remotely. However, it suffers from the problem of high-pressure pneumatic control or hydraulic oil control causing significant impact on the valve, leading to easy component damage and a short service life. This invention provides a hydraulic mud gate valve.

[0005] This utility model provides a hydraulic mud gate valve, which adopts the following technical solution:

[0006] A hydraulic mud gate valve includes two valve pipes. A gate frame is fixedly installed on one side of the two valve pipes facing each other, and a support frame is fixedly installed on the top of the gate frame.

[0007] A hydraulic cylinder is fixedly installed on the top of the support frame. The bottom end of the telescopic rod of the hydraulic cylinder extends to the lower side of the support frame and is fixedly installed with a gate sealing plate. The interior of the gate sealing plate slides in conjunction with the interior of the gate frame. A sealing plate is fixedly installed on the top of the gate sealing plate.

[0008] Through the above technical solution, it is convenient to reduce the impact force when moving the gate sealing plate to the inner wall of the gate frame, reduce the possibility of damage to the mud gate valve, and reduce the vibration generated when the hydraulic cylinder moves upward, thereby ensuring the service life of the mud gate valve.

[0009] Optionally, in the above-mentioned hydraulic mud gate valve, a flange is fixedly arranged on the side surface of the valve pipe, and a sealing ring is fixedly arranged inside the two flanges.

[0010] Through the above technical solution, it is convenient for the flange to connect and cooperate the valve pipe with the mud conveying pipe, and the sealing tank increases the connection sealing performance between the valve pipe and the mud conveying pipe.

[0011] Optionally, in the above-mentioned hydraulic mud gate valve, the shape of the support frame is an isosceles trapezoid, and a reinforcing plate is fixedly arranged on the top of the support frame, and one side of the reinforcing plate is fixedly fitted with the side surface of the hydraulic cylinder.

[0012] Through the above technical solution, it is convenient for the reinforcing plate to increase the firmness of the connection between the hydraulic cylinder and the support frame, and at the same time reduce the vibration generated when the hydraulic cylinder moves.

[0013] Optionally, in the above-mentioned hydraulic mud gate valve, the sealing plate includes a middle-shaped plate. The top of the vertical plate of the middle-shaped plate is fixedly fitted with the top of the gate sealing plate. A sealing strip is fixedly arranged at the bottom of the vertical plate of the middle-shaped plate. Sealing grooves matching with the two sealing strips are opened at the top of the gate sealing plate.

[0014] Through the above technical solution, it is convenient for the sealing strip and the sealing groove to prevent mud from flowing out from the upper side of the inner wall of the gate frame.

[0015] Optionally, in the above-mentioned hydraulic mud gate valve, limiting rods are fixedly arranged on the tops of the two horizontal plates of the middle-shaped plate. The top ends of the limiting rods extend to the top of the support frame and are fixedly provided with baffles.

[0016] Through the above technical solution, it is convenient for the limiting rods to ensure the vertical stability when the gate sealing plate moves downward to the inner wall of the gate frame.

[0017] Optionally, in the above-mentioned hydraulic mud gate valve, a hard rubber ring is fixedly sleeved on the side surface of the limiting rod. The bottom of the hard rubber ring is fixedly fitted with the top of the gate sealing plate. Circular grooves matching with the two hard rubber rings are opened at the bottom of the support frame.

[0018] Through the above technical solution, it is convenient for the hard rubber ring to reduce the vibration generated when the telescopic rod of the hydraulic cylinder drives the middle-shaped plate to move upward and contact the upper side of the inner wall of the support frame.

[0019] Optionally, in the above-mentioned hydraulic mud gate valve, a support plate is fixedly provided at the bottom of the gate frame, and the bottom of the support plate is on the same horizontal plane as the lower side of the flange.

[0020] The above technical solution facilitates the stable placement of the mud gate valve using the support plate.

[0021] Optionally, in the above-mentioned hydraulic mud gate valve, the bottom of the gate sealing plate is provided with an arc-shaped groove, and a silicone ring is fixedly installed inside the arc-shaped groove.

[0022] The above technical solution facilitates the use of silicone rings to enhance the sealing effect of the gate sealing plate on the valve pipe.

[0023] In summary, this utility model has at least one of the following beneficial effects:

[0024] The hydraulic cylinder drives the gate sealing plate downward, which reduces the impact force generated between the silicone ring at the bottom of the gate sealing plate and the valve pipe when the hydraulic cylinder drives the gate sealing plate downward. At the same time, the U-shaped plate moves to the upper side of the gate frame, causing the two sealing strips to move into the sealing groove. The two limit rods drive the two baffles to move down to contact the top of the support frame, thereby reducing the impact force of moving the gate sealing plate to the inner wall of the gate frame and reducing the possibility of damage to the mud gate valve.

[0025] When the valve pipe is opened, the gate sealing plate is moved up by the hydraulic cylinder. The upward movement of the gate sealing plate causes the U-shaped plate to move up, which in turn causes the two limit rods to move the two baffles up. At the same time, the two hard rubber rings move up, so that the hard rubber rings move into the circular groove. Then, the hard rubber rings contact the inside of the circular groove, reducing the vibration generated when the hydraulic cylinder moves up, thus ensuring the service life of the mud gate valve. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0028] Figure 3 This is a partial three-dimensional structural unfolded view of this utility model.

[0029] In the diagram: 1. Valve pipe; 101. Flange; 102. Sealing ring; 2. Gate frame; 201. Support plate; 3. Support frame; 301. Reinforcing plate; 4. Hydraulic cylinder; 5. Gate sealing plate; 501. Arc groove; 502. Silicone ring; 6. Sealing plate; 601. Chinese character plate; 602. Sealing strip; 603. Sealing groove; 604. Baffle; 605. Limiting rod; 606. Circular groove; 607. Hard rubber ring. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0031] Please refer to the attached diagram in the instruction manual. Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model is provided: a hydraulic mud gate valve, including valve pipe 1, the number of valve pipe 1 is two, a gate frame 2 is fixedly provided on one side opposite to the two valve pipe 1, and a support frame 3 is fixedly provided on the top of the gate frame 2;

[0032] A hydraulic cylinder 4 is fixedly installed on the top of the support frame 3. The bottom end of the telescopic rod of the hydraulic cylinder 4 extends to the lower side of the support frame 3 and is fixedly installed with a gate sealing plate 5. The interior of the gate sealing plate 5 slides with the interior of the gate frame 2. A sealing plate 6 is fixedly installed on the top of the gate sealing plate 5.

[0033] Working principle: When using this hydraulic mud gate valve, when mud sealing is required, the telescopic rod of the hydraulic cylinder 4 drives the gate sealing plate 5 to move downward. The gate sealing plate 5 moves to the lower side of the inner wall of the valve pipe 1, so that the silicone ring 502 at the bottom of the gate sealing plate 5 buffers the impact force generated between the gate sealing plate 5 and the valve pipe 1 when the hydraulic cylinder 4 drives the gate sealing plate 5 to move downward. At the same time, the U-shaped plate 601 moves to the top of the gate frame 2, and the two sealing strips 602 move into the interior of the sealing groove 603. The two limit rods 605 drive the two baffles 604 to move downward to contact the top of the support frame 3, thereby reducing the impact force of moving the gate sealing plate 5 to the inner wall of the gate frame 2 and reducing the possibility of damage to the mud gate valve.

[0034] When the gate sealing plate 5 is moved upward by the telescopic rod of the hydraulic cylinder 4, the valve pipe 1 is opened. The upward movement of the gate sealing plate 5 causes the U-shaped plate 601 to move upward, and the two limit rods 605 cause the two baffles 604 to move upward. At the same time, the two hard rubber rings 607 move upward, so that the hard rubber rings 607 move rods into the inside of the circular groove 606. Then, the hard rubber rings 607 contact the inside of the circular groove 606, reducing the vibration generated when the hydraulic cylinder 4 moves upward, thus ensuring the service life of the mud gate valve.

[0035] It should be noted that a flange 101 is fixedly installed on the inner side of the valve pipe 1, and a sealing ring 102 is fixedly installed inside the two flanges 101.

[0036] Using the above technical solution, flange 101 facilitates the connection and mating of valve pipe and mud conveying pipe, and sealing tank 102 increases the sealing performance of the connection between valve pipe and mud conveying pipe.

[0037] It should be noted that the support frame 3 is an isosceles trapezoid, and a reinforcing plate 301 is fixedly installed on the top of the support frame 3. One side of the reinforcing plate 301 is fixedly engaged with the side of the hydraulic cylinder 4.

[0038] By adopting the above technical solution, the reinforcing plate 301 can increase the firmness of the connection between the hydraulic cylinder 4 and the support frame 3, and at the same time reduce the vibration generated when the hydraulic cylinder 4 moves.

[0039] It should be noted that the sealing plate 6 includes a Chinese character-shaped plate 601. The top of the vertical plate of the Chinese character-shaped plate 601 is fixedly engaged with the top of the gate sealing plate 5. A sealing strip 602 is fixedly provided at the bottom of the vertical plate of the Chinese character-shaped plate 601. A sealing groove 603 is provided at the top of the gate sealing plate 5 to cooperate with the two sealing strips 602.

[0040] By adopting the above technical solution, the sealing strip 602 and the sealing groove 603 can prevent mud from flowing out from the upper side of the inner wall of the gate frame 2.

[0041] It should be noted that the top of each of the two horizontal plates of the Chinese character-shaped plate 601 is fixedly equipped with a limit rod 605, and the top of the limit rod 605 extends to the top of the support frame 3 and is fixedly equipped with a baffle 604.

[0042] By adopting the above technical solution, the limiting rod 605 can ensure the vertical stability of the gate sealing plate 5 when it moves towards the lower side of the inner wall of the gate frame 2.

[0043] It should be noted that a rigid rubber ring 607 is fixedly sleeved on the side of the limiting rod 605, and the bottom of the rigid rubber ring 607 is fixedly engaged with the top of the gate sealing plate 5. A circular groove 606 is provided at the bottom of the support frame 3 to engage with the two rigid rubber rings 607.

[0044] By adopting the above technical solution, the hard rubber ring 607 reduces the vibration generated when the telescopic rod of the hydraulic cylinder 4 drives the T-shaped plate 601 to move upward and contact the upper side of the inner wall of the support frame 3.

[0045] It should be noted that a support plate 201 is fixedly installed at the bottom of the gate frame 2, and the bottom of the support plate 201 is on the same horizontal plane as the lower side of the flange 101.

[0046] By adopting the above technical solution, the support plate 201 facilitates the stable placement of the mud gate valve.

[0047] It should be noted that the bottom of the gate sealing plate 5 is provided with an arc-shaped groove 501, and a silicone ring 502 is fixedly installed inside the arc-shaped groove 501.

[0048] By adopting the above technical solution, the silicone ring 502 can increase the sealing effect of the gate sealing plate 5 on the valve pipe 1.

[0049] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A hydraulic mud gate valve, comprising a valve pipe (1), characterized in that: The number of valve pipes (1) is two, and a gate frame (2) is fixedly installed on the opposite side of the two valve pipes (1). A support frame (3) is fixedly installed on the top of the gate frame (2). A hydraulic cylinder (4) is fixedly installed on the top of the support frame (3). The bottom end of the telescopic rod of the hydraulic cylinder (4) extends to the lower side of the support frame (3) and is fixedly installed with a gate sealing plate (5). The interior of the gate sealing plate (5) slides with the interior of the gate frame (2). A sealing plate (6) is fixedly installed on the top of the gate sealing plate (5).

2. The hydraulic mud gate valve according to claim 1, characterized in that: A flange (101) is fixedly installed on the inner side of the valve pipe (1), and a sealing ring (102) is fixedly installed inside the two flanges (101).

3. The hydraulic mud gate valve according to claim 1, characterized in that: The support frame (3) is an isosceles trapezoid, and a reinforcing plate (301) is fixedly installed on the top of the support frame (3). One side of the reinforcing plate (301) is fixedly engaged with the side of the hydraulic cylinder (4).

4. The hydraulic mud gate valve according to claim 1, characterized in that: The sealing plate (6) includes a Chinese character-shaped plate (601). The top of the vertical plate of the Chinese character-shaped plate (601) is fixedly engaged with the top of the gate sealing plate (5). A sealing strip (602) is fixedly provided at the bottom of the vertical plate of the Chinese character-shaped plate (601). A sealing groove (603) is provided at the top of the gate sealing plate (5) to cooperate with the two sealing strips (602).

5. A hydraulic mud gate valve according to claim 4, characterized in that: The top of each of the two horizontal plates of the Chinese character plate (601) is fixedly provided with a limiting rod (605), and the top of the limiting rod (605) extends to the top of the support frame (3) and is fixedly provided with a baffle (604).

6. A hydraulic mud gate valve according to claim 5, characterized in that: The side of the limiting rod (605) is fixedly fitted with a hard rubber ring (607), the bottom of the hard rubber ring (607) is fixedly engaged with the top of the gate sealing plate (5), and the bottom of the support frame (3) is provided with a circular groove (606) that engages with the two hard rubber rings (607).

7. A hydraulic mud gate valve according to claim 2, characterized in that: The bottom of the gate frame (2) is fixedly provided with a support plate (201), and the bottom of the support plate (201) is on the same horizontal plane as the lower side of the flange (101).

8. A hydraulic mud gate valve according to claim 1, characterized in that: The bottom of the gate sealing plate (5) is provided with an arc-shaped groove (501), and a silicone ring (502) is fixedly installed inside the arc-shaped groove (501).

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