An oil and gas recovery connection for oil and gas recovery

Abstract

This utility model relates to the field of oil and gas recovery connector technology, and in particular to an oil and gas recovery connector for oil and gas recovery; it includes a female connector, which is fitted and sealed with a male connector. A leak-proof groove is provided on the contact surface of the inner cavity of the female connector. The leak-proof groove is fitted and engaged with a convex ring provided on the male connector. The leak-proof groove and the convex ring are used for secondary sealing of the oil and gas recovery connector. The rubber ring acts as the main seal, bearing most of the sealing pressure. When the rubber ring leaks slightly due to aging, wear, or installation deviation, the convex ring is embedded in the leak-proof groove to form a secondary metal seal, which immediately serves as a backup barrier, greatly reducing the risk of sudden complete failure and reducing the risk of oil and gas leakage.

Description

Technical Field

[0001] This utility model relates to the field of oil and gas recovery connector technology, and in particular to an oil and gas recovery connector for oil and gas recovery. Background Technology

[0002] When oil is transferred from the oil depot to the tanker truck, a large amount of oil and gas needs to flow back from the tanker truck to the oil depot. An oil and gas recovery connector needs to be connected in the oil and gas return pipeline. When the oil and gas recovery connector is connected to the docking device in the oil and gas return pipeline, the oil and gas enter the oil depot through the oil and gas recovery connector, thereby realizing the recovery of oil and gas.

[0003] Existing oil and gas recovery joints all use rubber or plastic sealing rings, such as O-rings and flat gaskets, for sealing. These materials are prone to aging, hardening, deformation, cracking, and permanent compression deformation after long-term contact with oil, chemicals, temperature changes, and mechanical wear, leading to seal failure. This results in frequent replacement and maintenance of the sealing rings, increasing maintenance costs. If the sealing rings are not replaced in time, there may be a risk of oil and gas leakage during use.

[0004] Therefore, this application provides an oil and gas recovery connector for oil and gas recovery, which can provide secondary compensation sealing after the sealing ring fails, thereby reducing the risk of oil and gas leakage. Utility Model Content

[0005] The purpose of this utility model is to provide an oil and gas recovery connector for oil and gas recovery, which solves the problems of oil and gas leakage caused by the failure of the sealing ring of the existing oil and gas recovery connector and the inability to perform secondary sealing compensation.

[0006] To solve the above-mentioned technical problems, this utility model provides an oil and gas recovery connector for oil and gas recovery, including a female connector, which is fitted and sealed with a male connector. A leak-proof groove is provided on the contact surface of the inner cavity of the female connector. The leak-proof groove and the convex ring provided on the male connector are fitted and matched with each other. The leak-proof groove and the convex ring are used for secondary sealing of the oil and gas recovery connector.

[0007] A further improvement of this utility model is that a locking ring groove is provided on the side of the male connector body near the convex ring, the end face of the locking ring groove near the convex ring is the top contact surface, and an annular convex ring is provided on the top contact surface, with a convex ring height of 0.1-1cm.

[0008] A further improvement of the present invention is that: a pair of ear grooves are symmetrically arranged on both sides of the female connector body, and the lower part of the locking rod body is adapted to be installed in the ear groove. The shaft hole of the locking rod body is adapted to the shaft, and the shaft body passes through the shaft hole and is movably fixed on the ear groove.

[0009] A further improvement of this utility model is that a hole is provided in the middle of the locking rod body, the hole is adapted to the fixing hole on the ear groove and the two holes can overlap to form a straight line for fixing the locking rod.

[0010] A further improvement of this utility model is that a through-hole groove is provided through the groove wall of the ear canal body, the through-hole groove is located in the female end connector body, and the locking arc surface of the lower part of the locking rod body is adapted to the through-hole groove.

[0011] A further improvement of this utility model is that the locking arc surface is adapted to the locking ring groove, and the locking arc surface rotates upward for locking and fixing the male end connector.

[0012] A further improvement of this utility model is that the locking rod body rotates downward, causing the locking arc surface to disengage from the locking ring groove, and the release plane in the locking rod body is flush with the through-hole groove, which facilitates the withdrawal of the male end connector body.

[0013] A further improvement of this utility model is that: a rubber ring groove and a leak-proof groove are respectively provided on the contact surface of the female connector body. The leak-proof groove is located outside the rubber ring groove. A sealing rubber ring is adapted to be installed inside the rubber ring groove. The leak-proof groove and the convex ring are adapted to fit and seal.

[0014] A further improvement of this utility model is that the contact surface in the female connector body is adapted to and seals against the top contact surface in the male connector body.

[0015] A further improvement of this utility model is that the depth of the anti-leakage groove body is 0.1-1cm.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects:

[0017] 1. The present invention provides an oil and gas recovery connector for oil and gas recovery. The rubber ring serves as the main seal, bearing most of the sealing pressure. When the rubber ring leaks slightly due to aging, wear, or installation deviation, the convex ring is embedded in the anti-leakage groove to form a secondary metal seal, which immediately acts as a backup barrier, greatly reducing the risk of sudden complete failure. In particular, it can address issues such as insufficient instantaneous compression of the rubber ring, low-temperature hardening of rubber, and high-temperature softening of rubber, greatly reducing the risk of oil and gas leakage.

[0018] 2. The present invention provides an oil and gas recovery connector for oil and gas recovery, wherein the convex ring is embedded in the anti-leakage groove to form a high-pressure compensation metal structure. When the system pressure increases, the convex ring and the anti-leakage groove form a self-tightening seal. The higher the pressure, the tighter the embedding. This effectively solves the risk of instantaneous pressure changes caused by pulse pressure fluctuations and pipeline vibrations in the oil and gas recovery system, which could lead to separation of the male and female ends and oil and gas leakage.

[0019] 3. The oil and gas recovery connector provided by this utility model extends the service life of the main seal, the secondary seal bears part of the system pressure difference, reduces the continuous stress on the rubber ring, slows down aging, and extends the service life of the rubber ring.

[0020] 4. The oil and gas recovery connector for oil and gas recovery provided by this utility model forms a slope-arc composite engagement when the locking arc surface of the locking rod rotates to the locking ring groove of the male end connector. The contact surface generates a radial component force during the tightening process, which strongly presses the male end connector toward the axis of the female end, achieving a self-locking effect that tightens more and more as it is pressed. It saves more than 70% of the effort compared to traditional threaded locking and is not easy to loosen under vibration conditions.

[0021] 5. The present invention provides an oil and gas recovery connector for oil and gas recovery. The locking rod is rotated downward so that the release plane is flush with the through groove, thereby releasing all mechanical constraints. Compared with traditional threaded connectors which require multiple rotations and snap-fit ​​connectors which require multiple finger presses, this is faster and more efficient. The locking rod is operated by pure rotation without pushing or pulling, avoiding the risk of jamming caused by the operator's force direction conflicting with the connector axis. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 A schematic diagram of an oil and gas recovery connector for oil and gas recovery.

[0024] Figure 2 This is a schematic cross-sectional view of an oil and gas recovery connector for oil and gas recovery.

[0025] Figure 3 This is a structural schematic diagram of the female connector and locking rod.

[0026] Figure 4 This is a schematic diagram of the perforated groove in the female connector;

[0027] Figure 5 This is a schematic diagram of the ear groove in the female connector.

[0028] Figure 6 This is a schematic diagram of the locking rod.

[0029] Figure 7 A partially enlarged structural diagram of the female connector abutting the mating surface;

[0030] Figure 8A schematic diagram of the cross-sectional structure for fitting and mating female and male connectors;

[0031] Figure 9 This is a schematic diagram of the male connector.

[0032] Figure 10 This is a schematic diagram of the convex ring in the male connector.

[0033] Reference numerals: 1. Female connector; 2. Male connector; 3. Locking rod; 4. Shaft; 5. Fixing hole; 6. Rubber ring; 11. Through-hole groove; 12. Abutting surface; 13. Ear groove; 14. Rubber ring groove; 15. Leak-proof groove; 20. Top surface; 21. Convex ring; 22. Locking ring groove; 31. Shaft hole; 32. Locking arc surface; 33. Release plane; 34. Hole. Detailed Implementation

[0034] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The present invention will be further explained below with reference to specific embodiments.

[0038] like Figures 1-10As shown in the figure, this embodiment provides an oil and gas recovery connector for oil and gas recovery, including a female connector 1, which is fitted and sealed with a male connector 2. A leak-proof groove 15 is provided on the contact surface 12 of the inner cavity of the female connector 1. The leak-proof groove 15 is fitted and engaged with the convex ring 21 provided on the male connector 2. The leak-proof groove 15 and the convex ring 21 are used for secondary sealing of the oil and gas recovery connector. A rubber ring groove 14 and a leak-proof groove 15 are respectively provided on the contact surface 12 of the female connector 1 body. The leak-proof groove 15 is located outside the rubber ring groove 14. A sealing rubber ring 6 is fitted and installed in the rubber ring groove 14. The leak-proof groove 15 is fitted and sealed with the convex ring 21. The contact surface 12 of the female connector 1 body is fitted and engaged with the top contact surface 20 of the male connector 2 body. The depth of the leak-proof groove 15 body is 0.1-1cm. Specifically, one end of the female connector 1 is connected to an oil depot, which controls oil output through a valve. The other end of the female connector 1 is fitted with a sealing sleeve to connect to the male connector 2. One end of the male connector 2 is connected to an oil tank. By opening the oil depot valve, the male connector 2 delivers oil to the oil tank. This embodiment addresses the sealing problem between the female connector 1 and the male connector 2. The methods for oil delivery between the oil depot and the oil tank are existing technologies and will not be discussed here. A leak-proof groove 15 is provided on the contact surface 12 of the inner cavity of the female connector 1. This contact surface 12 is fitted and sealed to the top contact surface 20 of the male connector 2. A raised ring 21 is provided on the top contact surface 20, which, together with the leak-proof groove 15, forms a secondary seal in a metal structure. A rubber ring is also provided on the contact surface 12 of the female connector 1. The annular groove 14 is used to fit and install the rubber ring 6, which is a sealing rubber ring of the existing product. The contact surface 12 and the top contact surface 20 form a primary seal by abutting the sealing rubber ring 6. The annular groove 14 is inside the anti-leakage groove 15, and its outer diameter is smaller than the inner diameter of the anti-leakage groove 15. The mutual fit and contact of the contact surface 12 and the top contact surface 20 form a seal between the female end connector 1 and the male end connector 2. The rubber ring, as the main seal, bears most of the sealing pressure. When the rubber ring leaks slightly due to aging, wear, or installation deviation, the convex ring is embedded in the anti-leakage groove to form a secondary metal seal, which immediately serves as a backup barrier, greatly reducing the risk of sudden complete failure. In particular, it can deal with problems such as insufficient instantaneous compression of the rubber ring, low-temperature hardening, and high-temperature softening of rubber, greatly reducing the risk of oil and gas leakage.

[0039] like Figure 9 , Figure 10As shown, in this embodiment, a locking ring groove 22 is provided on the side of the male connector 2 body near the convex ring 21. The end face of the locking ring groove 22 near the convex ring 21 is a top contact surface 20, and an annular convex ring 21 is provided on the top contact surface 20. The height of the convex ring 21 is 0.1-1cm. Specifically, the male connector 2 body is cylindrical, and an annular locking ring groove 22 is provided on the outer wall of the male connector 2 body. The locking ring groove 22 is used to lock and fix it with the female connector 1. The end face near the locking ring groove 22 is a top contact surface 20, and a convex ring 21 is provided on the top contact surface 20. The convex ring 21 is adapted to the anti-leakage groove 15 on the contact surface 12 in the female connector 1. The convex ring 21 and the anti-leakage groove 15 abut against each other to form a secondary seal.

[0040] like Figures 1-8 As shown, in this embodiment, a pair of ear grooves 13 are symmetrically arranged on both sides of the female connector 1 body. The lower part of the locking rod 3 body is adapted to be installed in the ear groove 13. The shaft hole 31 of the locking rod 3 body is adapted to the shaft 4. The shaft 4 body passes through the shaft hole 31 and is movably fixed on the ear groove 13. A hole 34 is provided in the middle of the locking rod 3 body. The hole 34 is adapted to the fixing hole 5 on the ear groove 13 and the two holes can overlap to form a straight line for fixing the locking rod 3. The locking arc surface 32 is adapted to the locking ring groove 22. The locking arc surface 32 rotates upward for locking and fixing the male connector 2. Specifically, a pair of ear grooves 13 are symmetrically arranged on the outer wall of the female connector 1. The lower part of the locking rod 3 body is adapted to be installed in the ear groove 13. The shaft hole 31 of the lower part of the locking rod 3 body is adapted to the shaft 4. The shaft 4 body passes through the shaft hole 31 and is movably fixed on the ear groove 13. The locking rod 3 can rotate outward from 0 to 180 degrees. The locking rod 3 is used to lock and release the male connector 2. The locking rod 3 body is an irregularly shaped part. A through-hole groove 11 is provided through the groove wall of the ear groove 13 body. Located within the female connector 1 body, the locking arc surface 32 of the lower part of the locking rod 3 body is adapted within the through groove 11. By rotating the locking rod 3, when the locking arc surface 32 of the locking rod 3 body rotates upwards to the locking arc surface 32 of the male connector 2 body, the female connector 1 locks and fixes the male connector 2. When the locking rod 3 body rotates downwards, the release plane 33 in the locking rod 3 body becomes flush with the through groove 11. At this time, the locking arc surface 32 disengages from the locking ring groove 22, allowing the male connector 2 to be quickly pulled out of the female connector 1. When the locking arc surface of the locking rod rotates to the locking ring groove of the male connector, a slope-arc composite engagement is formed. The contact surface generates a radial force during tightening, strongly pressing the male connector towards the female connector axis, achieving a self-locking effect that tightens with increasing pressure. This is more than 70% less effort than traditional threaded locking and is less prone to loosening under vibration conditions. Rotating the locking rod downwards aligns the release plane with the through groove, releasing all mechanical constraints. Compared to traditional threads which require multiple rotations and snap-fit ​​devices which require multiple finger presses, this method is faster and more efficient. The locking rod operates purely by rotation, eliminating the need for pushing or pulling, thus avoiding the risk of jamming caused by the operator's force direction conflicting with the connector axis.

[0041] This utility model also provides a working principle for an oil and gas recovery connector. The user first inserts the male connector 2 into the inner cavity of the female connector 1, so that the top contact surface 20 of the male connector 2 and the abutting surface 12 of the female connector 1 are mutually fitted and abutted. The rubber ring 6, which is fitted and installed in the rubber ring groove 14 of the top contact surface 20 and the abutting surface 12, is pressed and abutted to form a primary seal. The convex ring 21 of the top contact surface 20 and the anti-leakage groove 15 of the abutting surface 12 are fitted and abutted to form a secondary metal seal. The rubber ring groove 14 is located in the inner ring of the anti-leakage groove 15, and its outer diameter is smaller than the inner diameter of the anti-leakage groove 15. To improve the effect of the primary and secondary metal seals, the locking rods 3, which are symmetrically arranged on both sides of the female connector 1 body, are rotated. The locking rods 3 are movably fixed in the ear groove 13 by the shaft 4. The ear groove 13 is located in the female connector 1 body. On the outer wall, the ear groove 13 is symmetrically provided with two matching locking rods 3. By rotating the locking rods 3 upward, the locking arc surface 32 in the locking rod 3 fits into the locking ring groove 22 for locking and fixing. The greater the upward rotation angle of the locking rod 3, the more firmly it fixes the male connector 2. A hole 34 is provided in the body of the locking rod 3. The hole 34 fits into the fixing hole 5 in the ear groove 13 and is in a straight line. The user can lock and fix the locking rod 3 by inserting the wire or shaft into the through fixing hole 5 and the hole 34 to prevent the locking rod 3 from moving on its own. When the user rotates the locking rod 3 downward, the release plane 33 in the locking rod 3 is flush with the outer diameter of the through groove 11 in the ear groove 13, which facilitates the male connector 2 to exit into the female connector 1. This oil and gas recovery connector is simple to operate and convenient to use, which greatly reduces the problem of oil and gas leakage.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An oil and gas recovery connector for oil and gas recovery, characterized in that: It includes a female connector (1), which is fitted and sealed with a male connector (2). A leak-proof groove (15) is provided on the contact surface (12) of the inner cavity of the female connector (1). The leak-proof groove (15) and the convex ring (21) provided on the male connector (2) are fitted and matched with each other. The leak-proof groove (15) and the convex ring (21) are used for secondary sealing of the oil and gas recovery connector.

2. The oil and gas recovery connector for oil and gas recovery according to claim 1, characterized in that: The male end connector (2) has a locking ring groove (22) on one side of the body near the convex ring (21). The end face of the locking ring groove (22) near the convex ring (21) is the top surface (20). The top surface (20) has an annular convex ring (21) with a height of 0.1-1cm.

3. The oil and gas recovery connector for oil and gas recovery according to claim 1, characterized in that: The female connector (1) has a pair of ear slots (13) symmetrically arranged on both sides of the body. The lower part of the locking rod (3) is adapted to be installed in the ear slot (13). The shaft hole (31) of the locking rod (3) is adapted to the shaft (4). The shaft (4) passes through the shaft hole (31) and is movably fixed on the ear slot (13).

4. The oil and gas recovery connector for oil and gas recovery according to claim 3, characterized in that: The locking rod (3) has a hole (34) in the middle of its body. The hole (34) is adapted to the fixing hole (5) on the ear groove (13) and the two holes can overlap to form a straight line for fixing the locking rod (3).

5. The oil and gas recovery connector for oil and gas recovery according to claim 3, characterized in that: The ear groove (13) has a through groove (11) on its main body wall. The through groove (11) is located in the female end connector (1) body. The locking arc surface (32) of the lower part of the locking rod (3) body is adapted inside the through groove (11).

6. The oil and gas recovery connector for oil and gas recovery according to claim 5, characterized in that: The locking arc surface (32) is adapted to the locking ring groove (22), and the locking arc surface (32) rotates upward for locking and fixing the male end connector (2).

7. The oil and gas recovery connector for oil and gas recovery according to claim 5, characterized in that: The locking rod (3) body rotates downward, causing the locking arc surface (32) to disengage from the locking ring groove (22). The release plane (33) in the locking rod (3) body is flush with the through groove (11), making it convenient for the male end connector (2) body to exit.

8. The oil and gas recovery connector for oil and gas recovery according to claim 1, characterized in that: The female connector (1) has a rubber ring groove (14) and a leak-proof groove (15) respectively provided on the contact surface (12) of the body. The leak-proof groove (15) is located outside the rubber ring groove (14). The rubber ring (6) is adapted to be installed in the rubber ring groove (14). The leak-proof groove (15) and the convex ring (21) are adapted to fit and seal.

9. The oil and gas recovery connector for oil and gas recovery according to claim 1, characterized in that: The mating surface (12) in the body of the female connector (1) is adapted to the top mating surface (20) in the body of the male connector (2) for mating and sealing.

10. The oil and gas recovery connector for oil and gas recovery according to claim 8, characterized in that: The depth of the leak-proof groove (15) body is 0.1-1cm.

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