Hydraulic flat valve for oil drilling platform

Abstract

The utility model discloses a hydraulic flat valve for a petroleum drilling platform, which comprises a valve body, the side surface of the valve body is fixedly connected with two communicating pipelines, the two communicating pipelines are mutually symmetrical relative to the center line of the valve body, the inner side surface of the valve body is fixedly communicated with two valve seat connecting pieces, and the valve seat connecting pieces are connected with the valve seat connecting pieces. The valve seat connecting piece fixedly communicates with the inner side face of the communicating pipeline, a flat valve plate is slidably connected to the inner side face of the valve body, and connecting clamping grooves are formed in the two side faces of the flat valve plate. The device has the advantages that the connecting clamping grooves are formed in the two side faces of the flat valve plate, the valve seat connecting piece is fixedly connected to one side of the connecting pipeline, the valve seat connecting piece is connected into the connecting clamping grooves in a sliding mode, connecting gaps cannot be generated in the vertical moving process of the flat valve plate, and then the air tightness of the device is enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of petroleum tools, in particular to a hydraulic flat valve for an oil drilling platform. Background Art

[0002] Hydraulic flat valve (also known as hydraulic flat valve) is a valve device used to control the flow of fluid in a hydraulic system. The hydraulic flat valve has the functions of fluid control, pressure regulation and direction control. It is also multifunctional, efficient, stable, safe and reliable.

[0003] Existing publication number CN210397763U discloses a hydraulic flat valve for an oil drilling platform, comprising a valve body, a connecting pipe is provided at the bottom of the valve body, a pushing device is installed at the bottom of the connecting pipe, a hydraulic cylinder is installed at the top of the valve body, a limit sleeve protective shell is provided at the top of the hydraulic cylinder, a limit sleeve is installed inside the limit sleeve protective shell, a screw is provided on the inner wall of the limit sleeve, and the limit sleeve is connected to the screw by a thread, and a turntable is provided on the surface of the screw.

[0004] The existing hydraulic flat valves for oil drilling platforms still have the following shortcomings:

[0005] 1. The existing design does not have a sealing design for the valve through hole. When the flat valve plate moves back and forth in the valve, a gap is likely to appear between the flat valve plate and the valve through hole, thereby affecting the sealing of the device.

[0006] 2. The telescopic spring in the existing design is only fixedly connected between the two baffles, and the pressure column and the valve stem are directly arranged in the middle of the spring. Firstly, the vertical elastic direction of the spring cannot be guaranteed, and secondly, the valve stem cannot be protected. Utility Model Content

[0007] The utility model aims to solve the problems of insufficient sealing between the valve through hole and the flat valve plate in the prior art and insufficient design of the existing rebound component, and proposes a hydraulic flat valve for oil drilling platforms.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A hydraulic flat valve for an oil drilling platform comprises: a valve body, two connecting pipes are fixedly connected to the side of the valve body, the two connecting pipes are symmetrical with each other about the center line of the valve body, the inner side of the valve body is fixedly connected to two valve seat connectors, the valve seat connector is fixedly connected to the inner side of the connecting pipe, a flat valve plate is slidably connected to the inner side of the valve body, connecting grooves are arranged on both sides of the flat valve plate, the two valve seat connectors are slidably connected to the connecting grooves, a valve cover is fixedly connected to the surface of the valve body, an elastic component, a hydraulic component and a control structure are arranged above the valve cover, the elastic component comprises a valve disc, A hydraulic cylinder housing, a pressure plate and a spring, the valve disc is fixedly connected to the upper surface of the valve cover, the hydraulic cylinder housing is fixedly connected to the upper surface of the valve disc, the pressure plate is slidably connected in the hydraulic cylinder housing, the spring is fixedly connected between the valve disc and the pressure plate, the hydraulic assembly includes a hydraulic cylinder, a piston and a valve stem, the hydraulic cylinder is fixedly connected to the upper surface of the valve disc, the hydraulic cylinder is arranged in the hydraulic cylinder housing, the piston is slidably connected in the hydraulic cylinder, the valve stem passes through and is fixedly connected in the piston, the valve stem is fixedly connected to the upper surface of the flat valve plate, the valve stem passes through the valve cover, the valve disc and the hydraulic cylinder and is fixedly connected to the lower surface of the pressure plate.

[0010] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: four guide rods are fixedly connected between the upper surface of the hydraulic cylinder and the inner top surface of the hydraulic cylinder housing, and the four guide rods are arranged in a circular array on the outside of the valve stem. The guide rods penetrate and are slidably connected to the pressure plate.

[0011] In order to better achieve the above purpose, the utility model adopts a further technical solution: the control structure includes a threaded rod and a turntable, the threaded rod is fixedly connected to the upper surface of the pressure plate, and the upper end of the threaded rod passes through the hydraulic cylinder housing and is fixedly connected to the lower surface of the turntable.

[0012] In order to better achieve the above-mentioned purpose, the utility model adopts a further technical solution: a connecting hole is provided on the flat valve plate, and the inner diameters of the connecting hole, the valve seat connector and the connecting pipe are all equal.

[0013] The advantages of the utility model are: by providing connection slots on both sides of the flat valve plate, and fixing a valve seat connector on one side of the connecting pipe, the valve seat connector is slidably connected in the connection slot, so that no connection gap is generated during the up and down movement of the flat valve plate, thereby enhancing the air tightness of the device. By arranging the hydraulic cylinder in the hydraulic cylinder housing, and arranging the spring between the hydraulic cylinder and the hydraulic cylinder housing, the spring will quickly reset after the pressure plate is pressed down, and the vertical elastic direction of the spring can be guaranteed, and the valve stem can also be protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a schematic diagram of the internal cross-sectional structure of a hydraulic flat valve for an oil drilling platform proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the hydraulic cylinder of the hydraulic flat valve for oil drilling platform proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the valve body of the hydraulic flat valve for oil drilling platforms proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the external upward structure of the hydraulic flat valve for oil drilling platform proposed by the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the external top view structure of the hydraulic flat valve for oil drilling platform.

[0019] In the figure: 1 valve body, 2 connecting pipe, 3 flat valve plate, 4 connecting slot, 5 valve cover, 6 valve disc, 7 hydraulic cylinder housing, 8 pressure plate, 9 spring, 10 hydraulic cylinder, 11 piston, 12 valve stem, 13 guide rod, 14 threaded rod, 15 turntable, 16 valve seat connector. DETAILED DESCRIPTION

[0020] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Reference Figure 1-Figure 5As shown, a hydraulic flat valve for an oil drilling platform comprises: a valve body 1, two connecting pipes 2 are fixedly connected to the side of the valve body 1, and the two connecting pipes 2 are symmetrical with each other about the center line of the valve body 1, and two valve seat connectors 16 are fixedly connected to the inner side of the valve body 1, and the valve seat connector 16 is fixedly connected to the inner side of the connecting pipe 2, and a flat valve plate 3 is slidably connected to the inner side of the valve body 1, and connecting grooves 4 are arranged on both sides of the flat valve plate 3, and two valve seat connectors 16 are slidably connected in the connecting grooves 4, and a connecting hole is arranged on the flat valve plate 3, and the inner diameters of the connecting hole, the valve seat connector 16 and the connecting pipe 2 are equal, and a valve cover 5 is fixedly connected to the surface of the valve body 1, and an elastic component, a hydraulic component and a control structure are arranged above the valve cover 5, and by arranging the connecting grooves 4 on both sides of the flat valve plate 3 and fixing the valve seat connector 16 on one side of the connecting pipe 2, the valve seat connector 16 is slidably connected in the connecting grooves 4, so that no connecting gap is generated during the up and down movement of the flat valve plate 3, thereby increasing Strengthen the air tightness of the device; the elastic component includes a valve disc 6, a hydraulic cylinder housing 7, a pressure plate 8 and a spring 9. The valve disc 6 is fixedly connected to the upper surface of the valve cover 5, the hydraulic cylinder housing 7 is fixedly connected to the upper surface of the valve disc 6, the pressure plate 8 is slidably connected in the hydraulic cylinder housing 7, and the spring 9 is fixedly connected between the valve disc 6 and the pressure plate 8. The hydraulic component includes a hydraulic cylinder 10, a piston 11 and a valve stem 12. The hydraulic cylinder 10 is fixedly connected to the upper surface of the valve disc 6, the hydraulic cylinder 10 is arranged in the hydraulic cylinder housing 7, and the piston 11 is slidably connected to the valve disc 6. It is connected to the hydraulic cylinder 10, the valve stem 12 passes through and is fixedly connected to the piston 11, the valve stem 12 is fixedly connected to the upper surface of the flat valve plate 3, the valve stem 12 passes through the valve cover 5, the valve disc 6 and the hydraulic cylinder 10 and is fixedly connected to the lower surface of the pressure plate 8. By setting the hydraulic cylinder 10 in the hydraulic cylinder housing 7 and setting the spring 9 between the hydraulic cylinder 10 and the hydraulic cylinder housing 7, the pressure plate 8 will be quickly reset due to the spring 9 after being pressed down, and the vertical elastic direction of the spring 9 can be guaranteed, and the valve stem 12 can also be protected.

[0022] Four guide rods 13 are fixedly connected between the upper surface of the hydraulic cylinder 10 and the inner top surface of the hydraulic cylinder housing 7 . The four guide rods 13 are arranged in a ring array outside the valve stem 12 . The guide rods 13 penetrate through and are slidably connected to the pressure plate 8 .

[0023] The control structure includes a threaded rod 14 and a turntable 15 . The threaded rod 14 is fixedly connected to the upper surface of the pressure plate 8 . The upper end of the threaded rod 14 passes through the hydraulic cylinder housing 7 and is fixedly connected to the lower surface of the turntable 15 .

[0024] When in use, the rotating length of the threaded rod 14 is controlled by rotating the turntable 15, thereby controlling the downward pressing distance of the pressure plate 8, so that the valve stem 12 drives the flat plate 3 to slide up and down, and connecting grooves 4 are provided on both side surfaces of the flat valve plate 3, and a valve seat connector 16 is fixedly connected to one side of the connecting pipe 2, so that the valve seat connector 16 is slidably connected to the connecting groove 4, so that during the up and down movement of the flat valve plate 3, no connection gap is generated, thereby enhancing the air tightness of the device, and the hydraulic cylinder 10 is arranged in the hydraulic cylinder housing 7, and the spring 9 is arranged between the hydraulic cylinder 10 and the hydraulic cylinder housing 7, after the pressure plate 8 is pressed down, it will be quickly reset due to the spring 9, and the vertical elastic direction of the spring 9 can be guaranteed, and the valve stem 12 can also be protected.

Claims

1. Hydraulic flat valve for oil drilling platform, characterized in that: The invention comprises a valve body (1), wherein two connecting pipes (2) are fixedly connected to the side of the valve body (1), and the two connecting pipes (2) are symmetrical with respect to the center line of the valve body (1); the inner side of the valve body (1) is fixedly connected to two valve seat connecting members (16), and the valve seat connecting member (16) is fixedly connected to the inner side of the connecting pipe (2); the inner side of the valve body (1) is slidably connected to a flat valve plate (3), and connecting grooves (4) are provided on both side surfaces of the flat valve plate (3), and the two valve seat connecting members (16) are slidably connected in the connecting grooves (4); a valve cover (5) is fixedly connected to the surface of the valve body (1), and an elastic component, a hydraulic component and a control structure are provided above the valve cover (5); the elastic component comprises a valve disc (6), a hydraulic cylinder housing (7), a pressure plate (8) and a spring (9); the valve disc (6) The hydraulic cylinder (10) is fixedly connected to the upper surface of the valve cover (5), the hydraulic cylinder housing (7) is fixedly connected to the upper surface of the valve disc (6), the pressure plate (8) is slidably connected to the inside of the hydraulic cylinder housing (7), the spring (9) is fixedly connected between the valve disc (6) and the pressure plate (8), the hydraulic assembly comprises a hydraulic cylinder (10), a piston (11) and a valve stem (12), the hydraulic cylinder (10) is fixedly connected to the upper surface of the valve disc (6), the hydraulic cylinder (10) is arranged in the hydraulic cylinder housing (7), the piston (11) is slidably connected to the inside of the hydraulic cylinder (10), the valve stem (12) penetrates and is fixedly connected to the inside of the piston (11), the valve stem (12) is fixedly connected to the upper surface of the flat valve plate (3), the valve stem (12) penetrates the valve cover (5), the valve disc (6) and the hydraulic cylinder (10) and is fixedly connected to the lower surface of the pressure plate (8).

2. The hydraulic flat valve for oil drilling platform according to claim 1, characterized in that: Four guide rods (13) are fixedly connected between the upper surface of the hydraulic cylinder (10) and the inner top surface of the hydraulic cylinder housing (7); the four guide rods (13) are arranged in a ring array outside the valve stem (12); and the guide rods (13) penetrate through and are slidably connected to the pressure plate (8).

3. The hydraulic flat valve for oil drilling platform according to claim 1, characterized in that: The control structure comprises a threaded rod (14) and a rotating disk (15); the threaded rod (14) is fixedly connected to the upper surface of the pressure plate (8); the upper end of the threaded rod (14) passes through the hydraulic cylinder housing (7) and is fixedly connected to the lower surface of the rotating disk (15).

4. The hydraulic flat valve for oil drilling platform according to claim 1, characterized in that: The flat valve plate (3) is provided with a communication hole, and the inner diameters of the communication hole, the valve seat connector (16) and the communication pipe (2) are all equal.

Images