CN116241195A

CN116241195A - Flange structure and christmas tree

Info

Publication number: CN116241195A
Application number: CN202211609499.7A
Authority: CN
Inventors: 俞先祥
Original assignee: Jiangsu Hongyuan Petrochemical Machinery Co ltd
Current assignee: Jiangsu Hongyuan Petrochemical Machinery Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-06-09

Abstract

The invention relates to the technical field related to christmas trees, in particular to a flange structure and a christmas tree, wherein the flange structure comprises a first flange plate, a second flange plate, a fastening bolt, a fastening nut and a sealing ring, the first flange plate and a first pipeline are integrally formed, a first-stage mounting hole is formed in the first flange plate in a penetrating way, a first-stage sealing groove is formed in the end face of the first flange plate, the second flange plate and the second pipeline are integrally formed, a second-stage mounting hole is formed in the second flange plate in a penetrating way, and a second-stage sealing groove is formed in the end face of the second flange plate; through setting up the flange structure that comprises first ring flange, second ring flange, fastening bolt, fastening nut and sealing washer combination to through offer the one-level seal groove and the second seal groove that the cross-section is isosceles triangle respectively at the terminal surface of first ring flange, second ring flange, thereby form the slant extrusion effect to the sealing washer through one-level seal groove, second seal groove, thereby effectively guarantee the leakproofness of its hookup location department.

Description

Flange structure and christmas tree

Technical Field

The invention relates to the technical field of christmas tree, in particular to a flange structure and a christmas tree.

Background

Christmas trees are wellhead devices used to recover oil, such as from blow wells and mechanical wells. The device is main equipment for controlling and regulating oil and gas production at the uppermost part of an oil and gas well, and mainly comprises three parts, namely a casing head, a tubing head and an oil (gas) extraction tree body;

the classification types of the christmas tree are more, and the classification types are divided into an overwater christmas tree (placed on a deck of a platform) and an underwater christmas tree (placed on a seabed) according to application areas; the tree is divided into a vertical (or vertical) tree, a horizontal (or horizontal) tree and an inserted (or caisson) tree according to the installation positions; the method is divided into a dry type Christmas tree, a wet type Christmas tree and a dry/wet type Christmas tree according to the structural form; the well arrangement is divided into a satellite well christmas tree and a chassis well christmas tree;

the flange structure and the production tree are provided to solve the problems.

Disclosure of Invention

The invention aims to provide a flange structure and a christmas tree so as to solve the problems in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a flange structure, the flange structure comprising:

the first flange plate is integrally formed with the first pipeline, a first-stage mounting hole is formed in the first flange plate in a penetrating mode, and a first-stage sealing groove is formed in the end face of the first flange plate;

the second flange plate is integrally formed with the second pipeline, a second-stage mounting hole is formed in the second flange plate in a penetrating mode, a second-stage sealing groove is formed in the end face of the second flange plate, the second-stage mounting hole is arranged corresponding to the first-stage mounting hole, and the second-stage sealing groove is arranged corresponding to the first-stage sealing groove;

the fastening bolt sequentially penetrates through the secondary mounting hole and the primary mounting hole;

the fastening nut is screwed on the fastening bolt, and the first flange plate and the second flange plate are positioned through the fastening bolt and the fastening nut;

the sealing ring is embedded between the second-level sealing groove and the first-level sealing groove.

Preferably, the primary seal groove and the secondary seal groove are of annular notch structures with isosceles triangle cross sections.

Preferably, the sealing ring is an annular rubber ring with a diamond-shaped section, and the sealing ring is in a pressed state when the first flange plate and the second flange plate are actually in butt joint.

Preferably, the side wall of the primary seal groove is integrally formed with a primary seal ring, the side wall of the secondary seal groove is integrally formed with a secondary seal ring, and the primary seal ring and the secondary seal ring are of annular convex structures with semicircular sections.

Preferably, the first-stage sealing ring and the second-stage sealing ring are arranged in a plurality of channels at equal intervals, and the first flange plate and the second flange plate are embedded into the rubber body of the sealing ring when in actual butt joint.

Preferably, the position of the port of the secondary mounting hole is provided with a nut groove, and when in actual mounting, a nut of the fastening bolt is embedded in the nut groove, the position of the port of the primary mounting hole is provided with a primary notch, the bottom of the primary notch is provided with a secondary notch, a locking assembly is arranged between the primary notch and the secondary notch, and the bottom of the nut of the fastening nut is provided with a meshing clamping groove.

Preferably, the anti-loosening assembly is formed by combining a base, a supporting spring, a movable seat and a meshing latch, two ends of the supporting spring are respectively connected with the base and the movable seat, the meshing latch and the movable seat are integrally formed, the outline of the movable seat is in a regular decagon shape, the section size of a first-stage notch is identical to the outline size of the movable seat, and the movable seat is movably arranged in the first-stage notch.

Preferably, the engaging latch is a protruding structure with an isosceles triangle cross section, the size of the notch of the engaging latch is identical to that of the engaging latch, a circle of the engaging latch and the engaging latch are arranged on equal circumferences, the engaging latch and the engaging latch are correspondingly arranged, and the engaging latch is embedded into the engaging latch when the fastening nut is actually screwed.

Preferably, the outer side wall of the base is provided with an external thread, the side wall of the secondary notch is provided with an internal thread, the base is screwed and installed in the secondary notch, the inner outline of the base is in a regular hexagon, and the outer tangent circle size of the inner outline of the base is identical to the inner outline size of the movable seat.

A christmas tree having the above flange structure.

Compared with the prior art, the invention has the beneficial effects that:

1. the flange structure formed by combining the first flange plate, the second flange plate, the fastening bolt, the fastening nut and the sealing ring is arranged, and the first sealing groove and the second sealing groove with the cross sections of isosceles triangles are respectively arranged on the end surfaces of the first flange plate and the second flange plate, so that the sealing ring is obliquely extruded through the first sealing groove and the second sealing groove, and the tightness of the connecting position of the sealing ring is effectively ensured;

2. the nut groove is formed in the port of the secondary mounting hole, the primary mounting hole and the secondary notch are formed in the port of the primary mounting hole, the anti-loosening assembly formed by combining the base, the supporting spring, the movable base and the meshing latch is arranged, the meshing latch is formed in the bottom surface of the nut of the fastening nut, and the nut is embedded into the meshing latch through the meshing latch, so that a self-locking anti-loosening effect is formed, and the butting stability of the first flange plate and the second flange plate is effectively ensured.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a half cross-sectional view of the present invention;

FIG. 3 is an enlarged schematic view of the structure shown in FIG. 2A;

FIG. 4 is a schematic view of a first flange structure according to the present invention;

FIG. 5 is a schematic view of a second flange structure according to the present invention;

FIG. 6 is a schematic view of the structure of the fastening nut of the present invention;

fig. 7 is a schematic structural view of the anti-loosening assembly of the present invention.

In the figure: the first flange plate 1, the second flange plate 2, the fastening bolt 3, the fastening nut 4, the sealing ring 5, the first pipeline 6, the second pipeline 7, the first-stage installation hole 8, the first-stage sealing groove 9, the second-stage installation hole 10, the second-stage sealing groove 11, the first-stage sealing ring 12, the second-stage sealing ring 13, the nut groove 14, the first-stage notch 15, the second-stage notch 16, the meshing clamping groove 17, the locking assembly 18, the base 19, the supporting spring 20, the movable seat 21 and the meshing clamping tooth 22.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order to make the objects, technical solutions, and advantages of the present invention more apparent, the embodiments of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are some, but not all, embodiments of the present invention, are intended to be illustrative only and not limiting of the embodiments of the present invention, and that all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "a," an, "" the first, "" the second, "" the third, "" the fourth, "" the fifth, "and the sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

For purposes of brevity and description, the principles of the embodiments are described primarily by reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one of ordinary skill in the art that the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Referring to fig. 1-7, the present invention provides the following five preferred embodiments:

example 1

The utility model provides a flange structure, flange structure includes first ring flange 1, second ring flange 2, fastening bolt 3, fastening nut 4 and sealing washer 5, first ring flange 1 and first pipeline 6 integrated into one piece, and first ring flange 1 is last to run through and to have been seted up one-level mounting hole 8, and first ring flange 1's terminal surface has been seted up one-level seal groove 9, second ring flange 2 and second pipeline 7 integrated into one piece, and run through on the second ring flange 2 and have been seted up second mounting hole 10, and second ring flange 2's terminal surface has been seted up second seal groove 11, second mounting hole 10 and one-level mounting hole 8 correspond the setting, second seal groove 11 and one-level seal groove 9 correspond the setting, fastening bolt 3 passes second mounting hole 10 and one-level mounting hole 8 in proper order, fastening nut 4 revolves to twist and installs on fastening bolt 3, and fix a position through fastening bolt 3 between first ring flange 1, second ring flange 2, sealing washer 5 embedding sets up between second ring seal groove 11 and one-level seal groove 9, one-level seal groove 9 and second ring seal groove 11 are isosceles triangle-shaped's annular notch structure.

The sealing ring 5 is an annular rubber ring with a diamond-shaped section, the sealing ring 5 of the first flange plate 1 and the second flange plate 2 is in a pressed state when in actual butt joint, a flange structure formed by combining the first flange plate 1, the second flange plate 2, the fastening bolt 3, the fastening nut 4 and the sealing ring 5 is arranged, and the first-stage sealing groove 9 and the second-stage sealing groove 11 with isosceles triangle sections are respectively arranged on the end faces of the first flange plate 1 and the second flange plate 2, so that the sealing ring 5 is obliquely extruded through the first-stage sealing groove 9 and the second-stage sealing groove 11, and the sealing performance of the connecting position is effectively ensured.

Example two

On the basis of embodiment one, integrated into one piece has one-level sealing ring 12 on the lateral wall of one-level sealing groove 9, integrated into one piece has second grade sealing ring 13 on the lateral wall of second grade sealing groove 11, one-level sealing ring 12, second grade sealing ring 13 are the annular protruding structure that the cross-section is semicircle, one-level sealing ring 12, second grade sealing ring 13 equidistant interval is provided with the multichannel, and first ring flange 1, second ring flange 2 when actual butt joint, its one-level sealing ring 12, second grade sealing ring 13 all imbeds into the rubber body of sealing washer 5, through the setting of one-level sealing ring 12, second grade sealing ring 13 to effectively improve the sealed effect between rubber body and the ring flange.

Example III

On the basis of the second embodiment, a nut groove 14 is formed at the port position of the second-stage mounting hole 10, in actual mounting, a nut of the fastening bolt 3 is embedded in the nut groove 14, a first-stage notch 15 is formed at the port position of the first-stage mounting hole 8, a second-stage notch 16 is formed at the bottom of the first-stage notch 15, a locking component 18 is mounted in the first-stage notch 15 and the second-stage notch 16, a meshing clamping groove 17 is formed at the bottom surface of the nut of the fastening nut 4, the locking component 18 is formed by combining a base 19, a supporting spring 20, a movable seat 21 and a meshing clamping tooth 22, two ends of the supporting spring 20 are respectively connected with the base 19 and the movable seat 21, the meshing clamping tooth 22 and the movable seat 21 are integrally formed, the outline of the movable seat 21 is in a regular decagon shape, the section size of the first-stage notch 15 is identical with the outline size of the movable seat 21, and the movable seat 21 is movably mounted in the first-stage notch 15.

The engaging latch 22 is a protruding structure with an isosceles triangle cross section, the notch size of the engaging latch 17 is matched with the size of the engaging latch 22, a circle of the engaging latch 17 and the engaging latch 22 are arranged on equal circumferences, the engaging latch 22 is arranged corresponding to the engaging latch 17, the engaging latch 22 of the fastening nut 4 is embedded into the engaging latch 17 when the fastening nut is actually screwed down, a nut groove 14 is formed at the port of the secondary mounting hole 10, a primary mounting hole 8 and a secondary notch 16 are formed at the port of the primary mounting hole 8, a locking assembly 18 formed by combining a base 19, a supporting spring 20, a movable seat 21 and the engaging latch 22 is arranged, and the engaging latch 17 is formed at the bottom surface of a nut of the fastening nut 4, so that the engaging latch 22 is embedded into the engaging latch 17, thereby forming a self-locking function, and effectively ensuring the butting stability of the first flange plate 1 and the second flange plate 2.

Example IV

On the basis of the third embodiment, the outer side wall of the base 19 is provided with external threads, the side wall of the secondary notch 16 is provided with internal threads, the base 19 is screwed and installed in the secondary notch 16, the inner contour of the base 19 is in a regular hexagon, the outer tangent circle size of the inner contour of the base 19 is matched with the inner contour size of the movable seat 21, and the installation stability of the anti-loosening assembly 18 in the notch is improved.

Example five

On the basis of the fourth embodiment, a christmas tree is provided, which has the flange structure.

While the foregoing has been described in terms of illustrative embodiments thereof, so that those skilled in the art may appreciate the present application, it is not intended to be limited to the precise embodiments so that others skilled in the art may readily utilize the present application to its various modifications and variations which are within the spirit and scope of the present application as defined and determined by the appended claims.

Claims

1. A flange structure, characterized in that: the flange structure includes:

the first flange plate (1), the first flange plate (1) and the first pipeline (6) are integrally formed, a first-stage mounting hole (8) is formed in the first flange plate (1) in a penetrating mode, and a first-stage sealing groove (9) is formed in the end face of the first flange plate (1);

the second flange plate (2), the second flange plate (2) and the second pipeline (7) are integrally formed, a second-stage mounting hole (10) is formed in the second flange plate (2) in a penetrating mode, a second-stage sealing groove (11) is formed in the end face of the second flange plate (2), the second-stage mounting hole (10) and the first-stage mounting hole (8) are correspondingly arranged, and the second-stage sealing groove (11) and the first-stage sealing groove (9) are correspondingly arranged;

the fastening bolt (3) sequentially penetrates through the secondary mounting hole (10) and the primary mounting hole (8);

the fastening nut (4) is screwed on the fastening bolt (3), and the first flange plate (1) and the second flange plate (2) are positioned through the fastening bolt (3) and the fastening nut (4);

the sealing ring (5), sealing ring (5) embedding sets up between second grade seal groove (11) and first order seal groove (9).

2. A flange structure according to claim 1, wherein: the primary seal groove (9) and the secondary seal groove (11) are of annular notch structures with isosceles triangle cross sections.

3. A flange structure according to claim 2, characterized in that: the sealing ring (5) is an annular rubber ring with a diamond-shaped section, and the sealing ring (5) is in a pressed state when the first flange plate (1) and the second flange plate (2) are actually in butt joint.

4. A flange structure according to claim 3, wherein: the side wall of the primary seal groove (9) is integrally formed with a primary seal ring (12), the side wall of the secondary seal groove (11) is integrally formed with a secondary seal ring (13), and the primary seal ring (12) and the secondary seal ring (13) are of annular bulge structures with semicircular sections.

5. A flange structure according to claim 4, wherein: the primary sealing ring (12) and the secondary sealing ring (13) are arranged in a plurality of channels at equal intervals, and the primary sealing ring (12) and the secondary sealing ring (13) are embedded into the rubber body of the sealing ring (5) when the first flange plate (1) and the second flange plate (2) are actually abutted.

6. A flange structure according to claim 5, wherein: the utility model discloses a nut groove (14) has been seted up to the port position department of second grade mounting hole (10), and during actual installation, the nut of its fastening bolt (3) is embedded in nut groove (14), one-level notch (15) has been seted up to the port position department of one-level mounting hole (8), second grade notch (16) have been seted up to the tank bottom of one-level notch (15), and install locking subassembly (18) among one-level notch (15) and second grade notch (16), meshing draw-in groove (17) have been seted up to the nut bottom surface of fastening nut (4).

7. A flange structure according to claim 6, wherein: the anti-loosening assembly (18) is formed by combining a base (19), a supporting spring (20), a movable seat (21) and a meshing latch (22), two ends of the supporting spring (20) are respectively connected with the base (19) and the movable seat (21), the meshing latch (22) and the movable seat (21) are integrally formed, the outline of the movable seat (21) is in a regular decagon shape, the section size of a primary notch (15) is identical to the outline size of the movable seat (21), and the movable seat (21) is movably mounted in the primary notch (15).

8. A flange structure according to claim 7, wherein: the meshing clamping teeth (22) are of a protruding structure with an isosceles triangle cross section, the notch size of the meshing clamping groove (17) is matched with the size of the meshing clamping teeth (22), a circle of equal circumference of the meshing clamping groove (17) and the meshing clamping teeth (22) is arranged, the meshing clamping teeth (22) are arranged corresponding to the meshing clamping groove (17), and the meshing clamping teeth (22) of the fastening nut (4) are embedded into the meshing clamping groove (17) when the fastening nut is actually screwed.

9. A flange structure according to claim 8, wherein: external threads are formed in the outer side wall of the base (19), internal threads are formed in the side wall of the secondary notch (16), the base (19) is screwed into the secondary notch (16), the inner outline of the base (19) is in a regular hexagon, and the outer tangent circle size of the inner outline of the base (19) is matched with the inner outline size of the movable seat (21).

10. A tree, characterized in that: the tree having the flange structure of any one of the preceding claims 1-9.