High-corrosion HH-grade wellhead device

Abstract

The utility model discloses a high corrosion HH level well head device, including neck flange, big four-way, small four-way and hand-operated flat valve, big four-way and small four-way are connected on neck flange in proper order, hand-operated flat valve is connected on both sides of big four-way and small four-way, and the hand-operated flat valve connected at the far end of big four-way is equipped with the support structure below. The supporting structure comprises a supporting cylinder and a supporting rod which are telescopically connected in a sleeved mode, a U-shaped frame is installed on the supporting rod, and three-fork supporting feet are installed at the bottom end of the supporting cylinder. The support structure is supported below the manual flat valve far away from the large four-way joint, the valve body is supported by the U-shaped frame, and the trident support legs fall on the ground, so that the self-gravity required to be overcome by the connecting end surface of the manual flat valve at the position is reduced, the stability and the safety of the whole wellhead device are improved, and the safety of the wellhead device is improved. And the lengths of a supporting cylinder and a supporting rod in the supporting structure can be adjusted so as to adapt to different mounting working conditions, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas mining, in particular to a high-corrosion HH-level wellhead device. Background Art

[0002] Wellhead equipment is an indispensable and important part of drilling projects such as oil, natural gas and water wells. It is used to control the pressure and direction of gas and liquid fluids. The HH-class wellhead equipment is wellhead equipment designed specifically for high-pressure and high-corrosion working environments. It mainly adopts an all-metal sealing structure, and the materials used in the device are all special corrosion-resistant materials.

[0003] However, due to the use of an all-metal structure, this type of wellhead device has a large deadweight. When multiple flat valves are connected horizontally to the four-way, the flat valve at the far end can only be supported by the connecting end face. At this time, the connecting bolts used to connect the flat valves need to overcome a large deadweight, affecting the installation stability and safety of the flat valve at the far end.

[0004] Therefore, we propose a high-corrosion HH-grade wellhead device to solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a high-corrosion HH-level wellhead device to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A high-corrosion HH-level wellhead device includes a neck flange, a large four-way valve, a small four-way valve and a manual flat valve. The large four-way valve and the small four-way valve are connected to the neck flange in sequence, and the manual flat valve is connected on both sides of the large four-way valve and the small four-way valve. A support structure is provided under the manual flat valve connected at the far end of the large four-way valve. The support structure includes a support tube and a support rod that are telescopically connected to each other, and a U-shaped frame for supporting the valve body of the manual flat valve is installed on the support rod. A three-pronged support leg for supporting on the ground is installed at the bottom end of the support tube.

[0008] In a further embodiment, a limit rod is provided at the inner bottom of the support tube, the top end of the limit rod slides through the interior of the support rod, and a bevel gear ring and a bevel gear that are vertically meshed with each other are also rotatably installed inside the support tube, and the support rod passes through the interior of the bevel gear ring and is threadedly connected to it.

[0009] In a further embodiment, a rocker for controlling the rotation of the bevel gear is installed outside the support cylinder, and the rocker adopts an L-shaped structure.

[0010] In a further embodiment, the limiting rod adopts a non-cylindrical structure.

[0011] In a further embodiment, the U-shaped frame includes a support plate and a pair of clamping plates, which are slidingly connected to the support plate through movable grooves, and a double-headed screw is rotatably installed inside the support plate, and the clamping plates are threadedly connected to the double-headed screw.

[0012] In a further embodiment, a flexible spacer is connected to the inner side of the splint.

[0013] In a further embodiment, the tripod support leg includes three support plates symmetrically distributed around the center, which are rotatably connected to the bottom edge of the support tube, and the bottom center of the support tube is also rotatably connected to a stud, the stud is externally threaded with a screw sleeve, and a connecting rod is hingedly connected between the screw sleeve and each support plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model sets a support structure to support the bottom of the manual flat valve away from the large four-way valve, supports the valve body through the U-shaped frame, and the three-pronged support leg falls on the ground, thereby reducing the self-gravity that the connecting end face of the manual flat valve needs to overcome, which is beneficial to improving the stability and safety of the entire wellhead device. In addition, the support tube and support rod in the support structure can also be adjusted in length to adapt to different installation conditions, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the support structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the U-shaped frame structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the support tube of the utility model;

[0020] Figure 5 This is a schematic diagram of the three-pronged support structure of the utility model.

[0021] In the figure: 1. Neck flange; 2. Large four-way valve; 3. Small four-way valve; 4. Manual flat valve; 5. Support cylinder; 51. Limit rod; 52. Bevel gear ring; 53. Bevel gear; 54. Rocker; 6. Support rod; 7. U-shaped frame; 71. Support plate; 711. Movable groove; 72. Clamp; 721. Flexible spacer; 73. Double-headed screw; 8. Three-pronged support leg; 81. Support plate; 82. Stud; 83. Screw sleeve; 84. Connecting rod. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate the description of the present invention and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[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 1-2 , a high-corrosion HH-level wellhead device, including a neck flange 1, a large four-way valve 2, a small four-way valve 3 and a manual flat valve 4. The large four-way valve 2 and the small four-way valve 3 are connected to the neck flange 1 in sequence, and a manual flat valve 4 is installed between the large four-way valve 2 and the small four-way valve 3, and manual flat valves 4 are also installed on the horizontal sides of the large four-way valve 2 and the small four-way valve 3. A supporting structure is provided under the manual flat valve 4 connected at the far end of the large four-way valve 2, which is used to provide support for the manual flat valve 4 at this location, thereby reducing the gravity that the manual flat valve 4 connecting parts need to overcome and enhancing its stability and safety. The supporting structure includes a supporting tube 5 and a supporting rod 6 that are telescopically connected to each other. One end of the supporting rod 6 passes through the interior of the supporting tube 5, and the other end extends out of the supporting tube 5 and is installed with a U-shaped frame 7. The U-shaped frame 7 is used to support the valve body of the manual flat valve 4. The bottom end of the supporting tube 5 is installed with a three-pronged support leg 8 for supporting on the ground, thereby forming a stable support between the ground and the manual flat valve 4.

[0026] See also Figure 3-4The cam 52 is rotated to move along the inner wall of the support tube 5, and the cam 53 is rotated to move along the inner wall of the support tube 5, so that the cam 52 is rotated and moved along the inner wall of the support tube 5, thereby adjusting the support height of the entire structure.

[0027] See also Figure 3 When the locking cam 72 is in the unlocking state, the locking cam 73 is locked, and the master lock 73 is locked.

[0028] Furthermore, the inner side surface of the clamping plate 72 is connected to a flexible spacer 721 , and the flexible spacer 721 is made of silicone or rubber material so that the clamping plate 72 can fit the side surface of the valve body more closely.

[0029] See also Figure 5 The three-pronged support leg 8 includes three support plates 81 symmetrically distributed in the center. The support plate 81 is rotatably connected to the bottom edge of the support tube 5, so that the support plate 81 can be rotated open to adjust the support angle. The bottom center of the support tube 5 is also rotatably connected to a stud 82, and the stud 82 is externally threaded with a screw sleeve 83, and a connecting rod 84 is provided between the screw sleeve 83 and each support plate 81, and the two ends of the connecting rod 84 are respectively hinged to the screw sleeve 83 and the support plate 81, so that when the stud 82 is rotated, the screw sleeve 83 can be driven to move, and then the support plate 81 is pulled open or contracted by the connecting rod 84 to adjust the appropriate support angle.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0031] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-corrosion HH-class wellhead device, comprising a neck flange (1), a large four-way valve (2), a small four-way valve (3) and a manual flat valve (4), wherein the large four-way valve (2) and the small four-way valve (3) are sequentially connected to the neck flange (1), and the manual flat valve (4) is connected to both sides of the large four-way valve (2) and the small four-way valve (3), characterized in that: A support structure is provided under the manual flat valve (4) connected at the far end of the large four-way valve (2), the support structure comprising a support cylinder (5) and a support rod (6) that are telescopically connected to each other, and a U-shaped frame (7) for supporting the valve body of the manual flat valve (4) is installed on the support rod (6), and a three-pronged support leg (8) for supporting on the ground is installed at the bottom end of the support cylinder (5).

2. The high-corrosion HH-level wellhead device according to claim 1, characterized in that: A limiting rod (51) is provided at the inner bottom of the support cylinder (5), and the top end of the limiting rod (51) slides through the interior of the support rod (6). A bevel gear ring (52) and a bevel gear (53) that mesh vertically with each other are also rotatably installed inside the support cylinder (5), and the support rod (6) penetrates the interior of the bevel gear ring (52) and is threadedly connected thereto.

3. The high-corrosion HH-level wellhead device according to claim 2, characterized in that: A rocker (54) for controlling the rotation of the bevel gear (53) is installed outside the support cylinder (5), and the rocker (54) adopts an L-shaped structure.

4. The high-corrosion HH-level wellhead device according to claim 2, characterized in that: The limiting rod (51) adopts a non-cylindrical structure.

5. The high-corrosion HH-level wellhead device according to claim 1, characterized in that: The U-shaped frame (7) includes a supporting plate (71) and a pair of clamping plates (72). The pair of clamping plates (72) are slidably connected to the supporting plate (71) through a movable groove (711). A double-headed screw (73) is rotatably installed inside the supporting plate (71), and the clamping plates (72) are threadedly connected to the double-headed screw (73).

6. The high-corrosion HH-class wellhead device according to claim 5, characterized in that: The inner side of the splint (72) is connected to a flexible spacer (721).

7. The high-corrosion HH-class wellhead device according to claim 1, characterized in that: The three-pronged support leg (8) includes three support plates (81) symmetrically distributed around the center. The support plates (81) are rotatably connected to the bottom edge of the support tube (5). The bottom center of the support tube (5) is also rotatably connected to a stud (82). The stud (82) is externally threadedly connected to a screw sleeve (83). A connecting rod (84) is hingedly connected between the screw sleeve (83) and each support plate (81).

Images