Seabed two-way ball passing Y-shaped tee joint

Abstract

The invention discloses a seabed two-way ball passing Y-shaped tee joint which comprises a tee joint body, a connecting cover, a rotating sleeve, a communicating hole, a blocking part, a transmission limiting assembly and a switch indicating assembly. By means of the mode, according to the submarine two-way ball passing Y-shaped tee joint, the communication state of the main channel and the branch channel is adjusted only through one rotating sleeve, the requirement for two-way ball passing of a submarine oil and gas conveying pipeline is met, visual adjustment position indication is achieved, the accuracy, stability and efficiency of operation are improved, and the practicability is high. The structure of an adjusting part and a transmission part is simplified, the cost and the maintenance difficulty are reduced, and the service life of a product is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of marine pipelines, in particular to a submarine two-way ball-passing Y-shaped tee. Background Art

[0002] Before a newly built submarine pipeline is put into operation, a ball cleaning operation must be carried out to clean the welding slag, impurities, etc. in the pipeline and determine the degree of deformation of the pipeline. In addition, during the operation of the submarine pipeline, cleaning operations are often required to improve the pipeline's transportation efficiency, reduce corrosion of the pipeline's inner wall, and separate different oil products.

[0003] Y-type tees are used for ball passing between multiple platforms and land. The ball passing can be equipped with different brush-type or scraper-type pigs, isolation and driving pigs, colloid pig balls, etc., and are used for pipeline construction, operation, inspection, maintenance, and repair. They have broad application prospects in areas with densely distributed submarine pipelines. However, conventional ordinary Y-type tees can only achieve one-way ball passing from branch pipes to main pipes, which is difficult to meet the two-way ball passing requirements of submarine oil and gas transportation projects. Summary of the invention

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: Provided is a submarine two-way ball Y-type tee, which includes: a tee body, a connecting cover, a rotating sleeve, a connecting hole, a blocking part, a transmission limit assembly, and a switch indicating assembly. The connecting cover is connected to the tee body, the rotating sleeve is arranged in the tee body, and a ball retainer is arranged between the tee body and the rotating sleeve. The front end of the rotating sleeve extends into the connecting cover, the connecting hole and the blocking part are arranged on the rear part of the rotating sleeve, and a plurality of small holes are arranged on the blocking part. The transmission limit assembly includes a limit rod, a first bevel gear, a limit groove, an operating rod, and a second bevel gear. The first bevel gear connected to the front end of the rotating sleeve is arranged in the connecting cover, and the operating rod is rotatably arranged on the connecting cover. The operating rod is connected to the second bevel gear meshing with the first bevel gear. The first bevel gear drives the rotating sleeve to rotate under the action of the operating rod and the second bevel gear, so that the connecting hole or the blocking portion is connected to the branch channel in the tee body to adjust the connection state between the main channel and the branch channel in the tee body. The limit groove is arranged on the cylinder of the first bevel gear, and the limit rod is arranged on the connecting cover, and its inner end is movably arranged in the limit groove to cooperate to limit the rotation angle of the rotating sleeve. The switch indicating assembly includes a first guide groove, a spring, a guide rod, a bracket, a second guide groove, an indicating plate, an indicating needle, and a guide screw. The bracket is connected to the connecting cover. The bracket is provided with the second guide groove and the indicating plate is provided on the top of the bracket. The outer peripheral surface of the cylinder of the first bevel gear is provided with the first guide groove whose depth gradually decreases along the circumferential direction to form a cam surface on the first bevel gear. The guide rod is connected to the connecting cover through a spring, and the inner end of the guide rod contacts the cam surface in the first guide groove, so that the first bevel gear drives the guide rod to move up and down through the cam surface when rotating. The indicating needle is provided on the top of the guide rod, and the guide rod is provided with the guide screw movably connected to the second guide groove to cooperate and drive the guide rod and the indicating needle to rotate while rising and falling, thereby realizing the visualization of the connection state.

[0005] In a preferred embodiment of the present invention, a sealing ring is provided at the connection between the tee body and the connecting cover, and a sealing ring is provided between the front end of the rotating sleeve and the tee body.

[0006] In a preferred embodiment of the present invention, the three-way body and the rotating sleeve are directly provided with two groups of ball retainers, and a spacer ring for supporting is connected between the two groups of ball retainers.

[0007] In a preferred embodiment of the present invention, a rotation torque socket is provided on the connection cover, and the outer end of the operating rod extends into the rotation torque socket.

[0008] In a preferred embodiment of the present invention, sealing rings are provided at the connections between the operating rod and the rotating torque jack, the rotating torque jack and the connecting cover, the rotating sleeve and the first bevel gear, the connecting cover and the first bevel gear, and the guide rod and the connecting cover.

[0009] In a preferred embodiment of the present invention, the blocking portion and the rotating sleeve are an integrated structure.

[0010] In a preferred embodiment of the present invention, an oil filling hole is provided on the connection cover, the oil filling hole is communicated with a cavity in the connection cover where the first bevel gear is installed, and a screw plug is detachably provided at the outer end of the oil filling hole.

[0011] In a preferred embodiment of the present invention, the connection cover is provided with a limiting hole, and the limiting hole is movably connected to the limiting rod.

[0012] In a preferred embodiment of the present invention, the indicator disk is provided with a dividing disk and marking symbols representing the switch status.

[0013] In a preferred embodiment of the present invention, a guide hole is provided on the connection cover, and the guide rod is movably connected to the guide hole.

[0014] The beneficial effects of the present invention are as follows: only a rotating sleeve is needed to adjust the connectivity between the main channel and the branch channel, thereby meeting the need for two-way ball passage in submarine oil and gas transmission pipelines, realizing visual adjustment position indication, improving the accuracy, stability and efficiency of operations, simplifying the structure of the adjustment and transmission parts, reducing costs and maintenance difficulties, and extending the service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which: Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a submarine two-way ball Y-type three-way connection of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of a preferred embodiment of a submarine two-way ball Y-shaped three-way connection of the present invention; Figure 3 It is a schematic diagram of the B-axis section structure of a preferred embodiment of a submarine two-way ball-passing Y-type tee of the present invention; Figure 4 It is a structural schematic diagram of a switch indicating assembly in a preferred embodiment of a submarine two-way ball Y-type three-way connection of the present invention; Figure 5 It is a structural schematic diagram of a transmission limit assembly in a preferred embodiment of a submarine two-way ball Y-type tee according to the present invention; Figure 6 It is a structural schematic diagram of the first guide groove in a preferred embodiment of a submarine two-way ball Y-type tee according to the present invention; Figure 7 It is a structural schematic diagram of the open and closed states of a branch channel in a preferred embodiment of a submarine two-way spherical Y-type three-way according to the present invention. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-7 , the embodiment of the present invention includes: A submarine two-way ball Y-type tee, the structure of which includes: a tee body 1, a connecting cover 2, a rotating sleeve 3, a connecting (elliptical) hole 301, a blocking part 302, a transmission limit assembly, and a switch indicating assembly.

[0018] A connecting cover 2 is provided on the tee body 1, the main channel 101 of the tee body is connected with the branch channel 102, the main channel 101 of the tee body is connected with the main channel 103 of the connecting cover, the connecting cover 2 is connected to the tee body 1 through studs and nuts, and an O-ring D12 is added at the connection between the tee body 1 and the connecting cover 2 to prevent the circulating medium in the tee body 1 from leaking out.

[0019] A rotating sleeve 3 is arranged in the tee body 1, and a ball retainer 29 is arranged between the inner wall of the tee body 1 and the side wall of the rotating sleeve 3. The balls on the ball retainer 29 are connected to the tee body 1 and / or the rotating sleeve 3 to reduce the rotation torque of the rotating sleeve 3 and improve the stability and accuracy of the rotation of the rotating sleeve. Two groups of ball retainers 29 can be arranged, and a spacer ring is connected between the two groups of ball retainers 29 to support the ball retainers 29.

[0020] The front end of the rotating sleeve 3 extends to the connecting cover 2 and is connected to the transmission limit assembly. The rear side wall of the rotating sleeve 3 is relatively provided with a connecting hole 301 and a blocking part 302. The blocking part is provided with a plurality of small holes 3021 in an array to maintain the normal flow of the medium in the main channel 101 and the branch channel 102 of the tee body. The rotating sleeve 3 rotates in the tee body 1 under the action of the transmission limit assembly, and drives the connecting hole 301 or the blocking part 302 to connect with the branch channel 102 to open or close the pipe mouth of the branch channel 102 connected with the main channel 101 of the tee body, thereby achieving the effect of allowing the pipe cleaner / ball to flow into the main channel or blocking the pipe cleaner / ball from entering the main channel. A switch indicating assembly connected to the transmission limit assembly is provided on the connecting cover 2 to indicate the current switch state of the rotating sleeve 3 or the branch channel 102.

[0021] Two O-rings A7 are arranged between the front end side wall of the rotating sleeve 3 and the tee body to prevent the medium flowing in the tee body 1 from leaking out.

[0022] The transmission limiting assembly includes a limiting rod 6 , a first bevel gear 10 , a limiting groove 1001 , an operating rod 25 , and a second bevel gear 252 .

[0023] A first bevel gear 10 is rotatably arranged in the connecting cover 2, the cylinder of the first bevel gear 10 is connected to the rotating sleeve 3, and a limiting groove 1001 with an arc of 180° is circumferentially arranged on the outer circumferential surface of the cylinder, the limiting rod 6 is arranged on the connecting cover 2, and its inner end is movably arranged in the limiting groove 1001, the limiting rod 6 cooperates with the limiting groove 1001 so that the first bevel gear 10 can only drive the rotating sleeve 3 to rotate 180°.

[0024] An operating rod 25 is rotatably provided on the connection cover 2 in front of the first bevel gear 10. The upper part of the operating rod 25 adopts a square head of standardized design, which is convenient for the underwater robot manipulator to operate the operating rod 25. The lower part of the operating rod 25 is connected to the second bevel gear 252, which meshes with the tooth surface of the first bevel gear 10 to convert the horizontal direction transmission into the vertical direction transmission. The underwater robot manipulator operates the operating rod 25 and the second bevel gear 252 to rotate, so as to drive the rotating sleeve 3 to rotate through the first bevel gear 10.

[0025] A rotation torque socket 26 is provided on the connecting cover 2, and the rod body of the operating rod 25 extends into the rotation torque socket 26. The rotation torque socket 26 is standardized in design to facilitate the underwater robot manipulator to operate the operating rod 25. The rotation torque socket 26 is connected to the connecting cover 2 through a hexagon socket screw D, and two O-rings G are added at the connection between the operating rod 25 and the rotation torque socket 26, and at the connection between the rotation torque socket 26 and the connecting cover 2 to prevent seawater from flowing into the connecting cover 2.

[0026] Further preferably, an O-ring C11 is additionally provided at the connection between the connection cover 2 and the first bevel gear 10 to prevent leakage of the circulating medium from the connection cover 2 .

[0027] Further preferably, the blocking portion and the rotating sleeve are an integrated structure.

[0028] Further preferably, two oil filling holes 201 are provided on the connecting cover 2, and the oil filling hole 201 is connected with the cavity in which the first bevel gear 10 is installed in the connecting cover, so as to facilitate the injection of lubricating oil to lubricate the first bevel gear 10 and the bevel gear at the bottom of the operating rod 25, and a screw plug 22 is detachably provided on the outer end of the oil filling hole 201.

[0029] Further preferably, the top of the rotating sleeve 3 is connected to the first bevel gear 10 by a hexagon socket screw A8, and an O-ring B9 is added at the connection between the rotating sleeve 3 and the first bevel gear 10 to prevent the circulating medium from leaking out of the rotating sleeve 3.

[0030] Further preferably, the connection cover 2 is provided with a limiting hole 202, and a limiting rod 6 is installed in the limiting hole 202 to limit the first bevel gear 10 to rotate 180 degrees.

[0031] The switch indicating assembly includes a first guide groove 1002 , a spring 13 , a guide rod 16 , a bracket 17 , a second guide groove 171 , an indicating plate 18 , an indicating needle 21 , and a guide screw 28 .

[0032] The bracket 17 is mounted on the side wall of the connecting cover 2 by means of a hexagon socket screw B. A 90° second guide groove 171 is provided on the side wall of the bracket 17, an indicator plate 18 is provided on the top thereof, and the indicator plate 18 is locked with a locking nut. A 90° dividing plate is engraved on the indicator plate 18, and there are marks "C" and "O", where C represents the closed state and O represents the open state.

[0033] A first guide groove 1002 with an arc of 180° is circumferentially arranged on the outer circumferential surface of the cylinder of the first bevel gear 10 , and the depth of the first guide groove 1002 gradually decreases to form a cam structure on the surface of the first bevel gear 10 .

[0034] The guide rod 16 is elastically connected to the connection cover 2 through the spring 13, and the inner end of the guide rod extends into the first guide groove 1002 and contacts the bottom surface of the first guide groove 1002 (the cam surface of the first bevel gear 10), so that the guide rod 16 moves up and down under the action of the first bevel gear 10 and the first guide groove 1002. When the first bevel gear 10 rotates clockwise / counterclockwise, the guide rod 16 is acted on by the cam protruding surface of the first bevel gear 10 and the first guide groove 1002, and the guide rod 16 compresses the spring 13 and moves upward; when the first bevel gear 10 rotates counterclockwise / clockwise, the guide rod 16 moves downward under the action of the restoring force of the spring 13.

[0035] The top of the guide rod 16 passes through the bracket 17 and is installed with an indicator needle 21, which can be locked with a hexagon socket screw C. A guide screw 28 is provided on the side wall of the guide rod 16, and the guide screw 28 is movably connected to the second guide groove 171 to cooperate and drive the guide rod and the indicator needle 21 to rotate circumferentially while rising and falling, so that the indicator needle 21 and the indicator disk 18 can display the rotation of the rotating sleeve 3 and the opening and closing of the branch channel in real time.

[0036] Further preferably, a guide hole 203 is provided on the connecting cover 2, and the guide rod 16 is installed in the guide hole 203 and extends outward.

[0037] Further preferably, an O-ring E14 is installed between the guide rod 16 and the connection cover 2 to prevent seawater from flowing into the connection cover 2.

[0038] The working principle of the submarine two-way ball Y-type tee includes: The tee is installed in the tee pipeline, and then the underwater robot manipulator rotates the operating rod 25 counterclockwise, the operating rod 25 drives the first bevel gear 10 to rotate, and then the first bevel gear 10 drives the rotating sleeve 3 to rotate, and the ball retainer 29 reduces the torque during the rotation of the rotating sleeve 3; when the first bevel gear 10 rotates to the first limit (open) position of the limit rod 6 and the limit groove 1001, it stops, and the rotating sleeve 3 also stops synchronously. At this time, the connecting hole 301 on the rotating sleeve 3 is just connected with the branch channel 102, and at the same time When the first bevel gear 10 rotates, the guide rod 16 moves upward under the action of the first bevel gear 10 and the first guide groove 1002 (the guide rod 16 moves toward the end of the first guide groove 1002 with a smaller depth), and drives the guide screw 28 to rotate along the second guide groove 171, so that the indicator needle 21 on the guide rod 16 rotates to the "O" position on the indicator disk 18. At this time, the cleaning ball can smoothly move from the branch channel 102 to the connecting hole 301, and then move to the main channel 101 of the tee body and then enter the main pipe.

[0039] When the underwater robot manipulator rotates the operating rod 25 clockwise, the operating rod 25 drives the first bevel gear 10 to rotate in the opposite direction, and synchronously drives the rotating sleeve 3 to rotate in the opposite direction; when the first bevel gear 10 rotates to the second limit (closed) position of the limit rod 6 and the limit groove 1001 and stops, the rotating sleeve 3 also stops. At this time, the blocking portion on the rotating sleeve 3 is just docked with the branch channel 102 of the three-way body 1, and in the process of the first bevel gear 10 rotating, the guide rod 16 moves to the end of the first guide groove 1002 with a larger depth, The reduction of thrust causes the guide rod 16 to move downward and reset under the action of the spring, and at the same time drives the guide screw 28 to move in the opposite direction in the second guide groove 171, so that the indicator needle 21 on the guide rod 16 rotates to the "C" position of the indicator disk 18. Since the diameter of the small hole 3021 on the blocking part is smaller than the diameter of the pipe cleaner / ball, the blocking part will only prevent the pipe cleaner / ball from entering the branch channel 102. At this time, the pipe cleaner / ball can smoothly move from the main channel 101 of the tee body to the main channel 103 of the connecting cover, and then move to the inlet main pipe.

[0040] The beneficial effects of the submarine two-way ball-passing Y-type tee of the present invention are: it meets the needs of two-way ball-passing of submarine oil and gas transmission pipelines, can be operated manually by divers or underwater ROV according to the water depth of the operating environment, and can perform precise operations according to visual position indications. The main components are made of forgings made of materials compatible with the pipeline, and the auxiliary coating and sealing design can meet the characteristics of pressure resistance, seawater resistance, corrosion resistance, high weldability, etc.

[0041] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A submarine two-way ball Y-type tee, characterized in that: include: Three-way body, connecting cover, rotating sleeve, connecting hole, blocking part, transmission limit assembly, switch indicator assembly, The connecting cover is connected to the tee body, the rotating sleeve is arranged in the tee body, and a ball retainer is arranged between the tee body and the rotating sleeve. The front end of the rotating sleeve extends into the connecting cover, the connecting hole and the blocking part are arranged on the rear part of the rotating sleeve, and a plurality of small holes are arranged on the blocking part. The transmission limit assembly includes a limit rod, a first bevel gear, a limit groove, an operating rod, and a second bevel gear. The first bevel gear connected to the front end of the rotating sleeve is arranged in the connecting cover, and the operating rod is rotatably arranged on the connecting cover. The operating rod is connected to the second bevel gear meshing with the first bevel gear. The first bevel gear drives the rotating sleeve to rotate under the action of the operating rod and the second bevel gear, so that the connecting hole or the blocking portion is connected to the branch channel in the tee body to adjust the connection state between the main channel and the branch channel in the tee body. The limit groove is arranged on the cylinder of the first bevel gear, and the limit rod is arranged on the connecting cover, and its inner end is movably arranged in the limit groove to cooperate to limit the rotation angle of the rotating sleeve. The switch indicating assembly includes a first guide groove, a spring, a guide rod, a bracket, a second guide groove, an indicating plate, an indicating needle, and a guide screw. The bracket is connected to the connecting cover. The bracket is provided with the second guide groove and the indicating plate is provided on the top of the bracket. The outer peripheral surface of the cylinder of the first bevel gear is provided with the first guide groove whose depth gradually decreases along the circumferential direction to form a cam surface on the first bevel gear. The guide rod is connected to the connecting cover through a spring, and the inner end of the guide rod contacts the cam surface in the first guide groove, so that the first bevel gear drives the guide rod to move up and down through the cam surface when rotating. The indicating needle is provided on the top of the guide rod, and the guide rod is provided with the guide screw movably connected to the second guide groove to cooperate and drive the guide rod and the indicating needle to rotate while rising and falling, thereby realizing the visualization of the connection state.

2. A submarine two-way ball Y-type tee according to claim 1, characterized in that: A sealing ring is provided at the connection between the three-way body and the connection cover, and a sealing ring is provided between the front end of the rotating sleeve and the three-way body.

3. A submarine two-way ball Y-type tee according to claim 1, characterized in that: The three-way body and the rotating sleeve are directly provided with two groups of ball retainers, and a spacer ring for supporting is connected between the two groups of ball retainers.

4. The submarine two-way ball Y-type tee according to claim 1, characterized in that: The connection cover is provided with a rotation torque socket, and the outer end of the operating rod extends into the rotation torque socket.

5. The submarine two-way ball Y-type tee according to claim 1, characterized in that: Sealing rings are provided at the connections between the operating rod and the rotating torque socket, the rotating torque socket and the connecting cover, the rotating sleeve and the first bevel gear, the connecting cover and the first bevel gear, and the guide rod and the connecting cover.

6. The submarine two-way ball Y-type tee according to claim 1, characterized in that: The blocking portion and the rotating sleeve are an integrated structure.

7. The submarine two-way ball Y-type tee according to claim 1, characterized in that: The connecting cover is provided with an oil filling hole, which is communicated with a cavity in the connecting cover where the first bevel gear is installed, and a screw plug is detachably provided at the outer end of the oil filling hole.

8. The submarine two-way ball Y-type tee according to claim 1, characterized in that: The connection cover is provided with a limiting hole, and the limiting hole is movably connected to the limiting rod.

9. The submarine two-way ball Y-type tee according to claim 1, characterized in that: The indicating disk is provided with a dividing disk and marking symbols representing the switch status.

10. The submarine two-way ball Y-type tee according to claim 1, characterized in that: The connecting cover is provided with a guide hole, and the guide rod is movably connected with the guide hole.

Images