A conversion flange for a petroleum wellhead

Abstract

The utility model discloses a conversion flange of petroleum wellhead device, including flange plate no.

Description

Technical Field

[0001] This utility model relates to the field of oil wellhead equipment technology, and specifically to a conversion flange for an oil wellhead equipment. Background Technology

[0002] The wellhead equipment, also known as the production tree, mainly consists of casing inlet valves, outlet valves, drain valves, main valves, test valves, pressure gauges, and oil pressure gauges. All of these valves and gauges are connected to the pipelines via conversion flanges.

[0003] Existing conversion flanges are generally constructed using two flanges and bolts, which suffers from drawbacks such as poor sealing and difficulty in quickly assembling and disassembling the flange, thus affecting its use and operation. Therefore, there is an urgent need to design a new conversion flange for oil wellhead equipment to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a conversion flange for an oil wellhead device to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A conversion flange for an oil wellhead device includes a flange plate one and a flange plate two. The outer wall of the flange plate two is provided with a plurality of rotating connecting parts, and the rotating connecting parts are provided with rotating connecting clips. One end of the connecting clips is quickly connected to the outside of the flange plate one. The rotating connecting parts and the connecting clips are used for quick-release connection between the flange plate one and the flange plate two.

[0007] A limiting ring is slidably provided on the outside of the flange. The limiting ring is used to lock one end of the connecting clip to the flange. Several locking modules are provided between the limiting ring and the flange. The locking modules are used to fix the limiting ring outside the flange.

[0008] Furthermore, the outer ends of flange one and flange two are respectively connected to pipe two and pipe one.

[0009] Furthermore, an integrally formed inclined cone is provided on one outer wall of the flange.

[0010] Furthermore, an integrally formed inclined cone II is provided on one side of the outer wall of flange II, and sealing channels are provided on one side of the outer wall of both inclined cone I and inclined cone II.

[0011] Furthermore, the outer wall of the second inclined cone is provided with several filling nozzles, which are connected to the sealing channel, and the filling nozzles are fitted with sealing plugs.

[0012] Furthermore, the rotating connector includes a hinge seat fixed to the outer wall of the flange, and a pin is provided inside the hinge seat, with a bushing located inside the hinge seat sleeved on the outside of the pin.

[0013] Furthermore, the connecting clip includes a pull rod fixed to the outer wall of one side of the bushing, and a snap-fit ​​connector is fixedly connected to the end of the pull rod. Several limiting seats are provided on the outer wall of the flange, and one end of the snap-fit ​​connector and the pull rod are snapped into the inside of the limiting seats.

[0014] Furthermore, several sliding seats are fixedly installed on the inner wall of the limiting ring.

[0015] Furthermore, the locking module includes a fixing seat fixed on an outer wall of the flange, and a plurality of ear plates are provided on the inner wall of the limiting ring. A release rod is fixedly installed on one outer wall of the ear plate and the release rod is inserted into the interior of the fixing seat.

[0016] In the above technical solution, the conversion flange of the oil wellhead device provided by this utility model has the following advantages:

[0017] (1) Several rotating connecting parts and connecting clips are provided between flange one and flange two, which can realize the quick assembly and disassembly of flange one and flange two, improve the efficiency of connecting flange one and flange two, and at the same time ensure the stability and sealing of the connection between flange one and flange two.

[0018] (2) By setting the first and second inclined cones on flange one and flange two, a sealing channel can be formed by the first and second inclined cones after flange one and flange two are fastened. A sealing rubber ring can be set in advance inside the sealing channel, and sealing grease can be injected into the inside through the injection nozzle in the later stage to ensure the sealing effect between flange one and flange two.

[0019] (3) The limiting ring is connected to the outside of flange one, and the locking module is used to fix the limiting ring to the outside of flange one, thereby locking the connecting clip with the limiting ring and ensuring the stability of the connecting clip outside flange one, thus ensuring the stability of the connection between flange one and flange two by using the rotating connecting part and the connecting clip. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of an angle structure of an embodiment of a conversion flange for an oil wellhead device according to the present invention.

[0022] Figure 2 This is another structural schematic diagram of an embodiment of the conversion flange of an oil wellhead device according to the present invention.

[0023] Figure 3 This is a schematic diagram of the rotating connection structure provided in an embodiment of the conversion flange of an oil wellhead device according to this utility model.

[0024] Figure 4 This is a half-sectional view of an embodiment of a conversion flange for an oil wellhead device according to the present invention.

[0025] Figure 5 This is a schematic diagram of the limiting ring structure provided for an embodiment of the conversion flange of an oil wellhead device according to this utility model.

[0026] 1. Flange 1; 11. Tapered flange 1; 2. Flange 2; 21. Tapered flange 2; 22. Sealing channel; 23. Filling nozzle; 24. Sealing plug; 3. Pipe 1; 4. Pipe 2; 5. Rotating connector; 51. Hinge seat; 52. Bushing; 53. Pin; 6. Connecting clip; 61. Tie rod; 62. Clip joint; 63. Limit seat; 7. Limit ring; 71. Sliding seat; 8. Locking module; 81. Ear plate; 82. Release rod; 83. Fixed seat. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown in the figure, the present invention provides a conversion flange for an oil wellhead device, including a flange 1 and a flange 2. A plurality of rotating connecting parts 5 are provided on the outer wall of flange 2, and rotating connecting parts 5 are provided with rotating connecting clips 6. One end of the connecting clips 6 is quickly connected to the outside of flange 1. The rotating connecting parts 5 and the connecting clips 6 are used for quick-release connection between flange 1 and flange 2. A limiting ring 7 is slidably provided on the outside of flange 1. The limiting ring 7 is used for locking one end of the connecting clips 6 to flange 1. A plurality of locking modules 8 are provided between the limiting ring 7 and flange 1. The locking modules 8 are used for fixing the limiting ring 7 to the outside of flange 1.

[0029] In this embodiment, flange 1 and flange 2 are included. The outer ends of flange 1 and flange 2 are respectively connected to pipe 4 and pipe 3. Through the connection between flange 1 and flange 2, the connection between pipe 4 and pipe 3 is realized, thereby realizing the transportation of petroleum and related substances.

[0030] In this embodiment, an integrally formed inclined cone 11 is provided on one outer wall of flange 1, and an integrally formed inclined cone 21 is provided on one outer wall of flange 2. Both inclined cone 11 and inclined cone 21 have sealing channels 22 on one outer wall. When flange 1 and flange 2 are initially installed, a sealing rubber ring is placed inside the sealing channel 22, and sealing grease is injected into the channel through the injection nozzle 23 later. The sealing grease can be an organic liquid, such as mineral oil or silicone oil, or a liquid that is injected and then solidifies into a solid, thus ensuring the sealing effect between flange 1 and flange 2.

[0031] Specifically, several filling nozzles 23 are provided on the outer wall of the inclined cone 21. The filling nozzles 23 are connected to the sealing channel 22. A sealing plug 24 is inserted inside the filling nozzle 23. The operator removes the sealing plug 24 from the filling nozzle 23 and injects the sealing grease into the sealing channel 22 using a syringe or other tools.

[0032] In this embodiment, a plurality of rotating connectors 5 are provided on the outer wall of flange 2. The rotating connectors 5 include a hinge seat 51 fixed on the outer wall of flange 2, and a pin 53 is provided inside the hinge seat 51. A bushing 52 located inside the hinge seat 51 is sleeved on the outside of the pin 53. The bushing 52 rotates with the pin 53 to the outside, thereby causing the connecting clip 6 on the outside of the bushing 52 to flip, so as to realize the quick assembly and disassembly between flange 1 and flange 2.

[0033] In this embodiment, a rotating connecting member 5 is provided with a rotating connecting clip 6. One end of the connecting clip 6 is quickly connected to the outside of flange 1. The rotating connecting member 5 and the connecting clip 6 are used for quick connection between flange 1 and flange 2. The connecting clip 6 includes a pull rod 61 fixed to one side of the outer wall of the bushing 52, and a snap-fit ​​connector 62 is fixedly connected to the end of the pull rod 61. Several limiting seats 63 are provided on the outer wall of flange 1. The snap-fit ​​connector 62 and one end of the pull rod 61 are snapped into the inside of the limiting seat 63. The pull rod 61 serves as an extension. After the pull rod 61 is flipped through the bushing 52, the snap-fit ​​connector 62 is located on one side of the limiting seat 63, and the pull rod 61 is inserted into the inside of the limiting seat 63, thereby realizing the connection between the connecting clip 6 and flange 1, and ensuring the stability of the connection between flange 1 and flange 2.

[0034] In this embodiment, a limiting ring 7 is slidably provided on the outside of flange 1. The limiting ring 7 is used to lock one end of the connecting clip 6 to flange 1. Several sliding seats 71 are fixedly installed on the inner wall of the limiting ring 7. By moving the limiting ring 7, the inner sliding seats 71 can be moved synchronously, so that the sliding seats 71 are fitted onto the outside of the limiting seat 63, thereby limiting the pull rod 61 inside the limiting seat 63.

[0035] In this embodiment, a plurality of locking modules 8 are provided between the limiting ring 7 and flange 1. The locking modules 8 are used to fix the limiting ring 7 outside flange 1. The locking modules 8 include a fixing seat 83 fixed on the outer wall of flange 1, and a plurality of ear plates 81 are provided on the inner wall of the limiting ring 7. A release rod 82 is fixedly installed on one side of the outer wall of the ear plate 81 and is inserted into the inside of the fixing seat 83. After the limiting ring 7 moves, the ear plates 81 on the inner side of the limiting ring 7 move synchronously. The ear plates 81 drive the release rod 82 to be inserted into the inside of the fixing seat 83, thereby fixing the limiting ring 7 outside flange 1 and ensuring the stability of the connecting clip 6 and the rotating connecting piece 5 between flange 1 and flange 2.

[0036] Working steps: 1. When using, connect flange 1 and flange 2 to achieve the connection between pipe 2 4 and pipe 3;

[0037] Second, by rotating the connecting piece 5, the connecting clip 6 is rotated, so that the clip 62 and the pull rod 61 are connected to the limit seat 63, thereby realizing the fixed connection between flange 1 and flange 2.

[0038] Third, the operator then slides the limiting ring 7 outside the flange 1, so that the sliding seat 71 inside the limiting ring 7 is locked outside the limiting seat 63, thereby ensuring the stability of the pull rod 61 and the snap connector 62 on the limiting seat 63.

[0039] Fourth, after the sliding seat 71 slides, the ear plate 81 and the release rod 82 located inside the limiting ring 7 move synchronously, so that the release rod 82 is inserted into the inside of the fixed seat 83, thereby fixing the limiting ring 7 and ensuring the stability of the connection between flange 1 and flange 2.

[0040] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A conversion flange for a petroleum wellhead, comprising a flange plate one (1) and a flange plate two (2), characterized in that, The outer wall of the second flange (2) is provided with a plurality of rotating connectors (5), and the rotating connectors (5) are provided with rotating connecting clips (6). One end of the connecting clips (6) is connected to the outside of the first flange (1) in a quick-release manner. The rotating connectors (5) and the connecting clips (6) are used for quick-release connection between the first flange (1) and the second flange (2). A limiting ring (7) is slidably provided on the outside of the flange (1). The limiting ring (7) is used to lock one end of the connecting clip (6) to the flange (1). Several locking modules (8) are provided between the limiting ring (7) and the flange (1). The locking modules (8) are used to fix the limiting ring (7) outside the flange (1).

2. A conversion flange for a petroleum wellhead assembly according to claim 1, wherein, The outer ends of flange one (1) and flange two (2) are respectively connected to pipe two (4) and pipe one (3).

3. A conversion flange for a petroleum wellhead assembly according to claim 1, wherein, An integrally formed oblique cone (11) is provided on one side of the outer wall of the flange (1).

4. The conversion flange of an oil wellhead device according to claim 3, characterized in that, An integrally formed oblique cone 2 (21) is provided on one side of the outer wall of flange 2 (2), and sealing channels (22) are provided on one side of the outer wall of both oblique cone 1 (11) and oblique cone 2 (21).

5. The conversion flange of an oil wellhead device according to claim 4, characterized in that, The outer wall of the oblique cone II (21) is provided with a number of filling nozzles (23), the filling nozzles (23) are connected to the sealing channel (22), and the filling nozzles (23) are fitted with sealing plugs (24).

6. The conversion flange of an oil wellhead device according to claim 1, characterized in that, The rotating connector (5) includes a hinge seat (51) fixed on the outer wall of the flange (2), and a pin (53) is provided inside the hinge seat (51). A bushing (52) located inside the hinge seat (51) is sleeved on the outside of the pin (53).

7. The conversion flange of an oil wellhead device according to claim 1, characterized in that, The connecting clip (6) includes a pull rod (61) fixed to the outer wall of one side of the bushing (52), and a snap-fit ​​connector (62) is fixedly connected to the end of the pull rod (61). Several limiting seats (63) are provided on the outer wall of the flange (1), and one end of the snap-fit ​​connector (62) and the pull rod (61) are snapped into the inside of the limiting seat (63).

8. The conversion flange of an oil wellhead device according to claim 1, characterized in that, Several sliding seats (71) are fixedly installed on the inner wall of the limiting ring (7).

9. The conversion flange of an oil wellhead device according to claim 1, characterized in that, The locking module (8) includes a fixing seat (83) fixed on the outer wall of the flange (1), and a plurality of ear plates (81) are provided on the inner wall of the limiting ring (7), and a release rod (82) is fixedly installed on one side of the outer wall of the ear plate (81), and the release rod (82) is inserted into the interior of the fixing seat (83).

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