Hydraulic coupler for oil conveying pipe

Abstract

The utility model discloses a hydraulic coupler for an oil conveying pipe. The hydraulic coupler comprises a coupling valve body, an oil inlet, an oil outlet, a disc valve, an outer hydraulic assembly, an inner hydraulic assembly, a movable hydraulic clamp, a guide shaft, a controller A and a controller B, an oil inlet and an oil outlet are formed in the two sides of the coupler valve body respectively, an outer hydraulic assembly is fixed outside the coupler valve body, the controller A is electrically connected with the outer hydraulic assembly, an inner hydraulic assembly is fixed in the coupler valve body, and the controller B is electrically connected with the inner hydraulic assembly. A controller A and a controller B are arranged, the controller A controls a hydraulic push shaft A of an outer hydraulic assembly to be pushed out and contracted, a movable hydraulic clamp is controlled to be opened and closed, installation, clamping and sealing of an oil conveying pipeline and an oil outlet are completed, and the controller B controls a hydraulic push shaft B of an inner hydraulic assembly to be pushed out forwards so that a disc valve can stretch out to form an oil conveying channel. The two controllers control the inner and outer hydraulic assemblies to be matched, so that the oil conveying pipe is clamped and sealed and smoothly conveys oil.

Description

Technical Field

[0001] This utility model relates to the field of bow loading system technology, specifically a hydraulic coupler for oil pipelines. Background Technology

[0002] The bow loading system consists of five parts: mooring system, loading manifold system, hydraulic system, control system, and safety system. The bow loading system is located at the bow of the shuttle tanker and should be able to successfully connect to the unloading hoses on the offshore floating storage and offloading vessel (FPSO) or offshore oil transfer platform in an environment with an temperature of -20°C to 50°C. The crude oil is then safely transferred to the shuttle tanker through the connecting hoses.

[0003] The loading manifold unit mainly consists of a hydraulic coupler and its combined valves, universal joints, hydraulic cylinders, hydraulic calipers, tension sensors, and other components. Its main function is to accurately and securely connect the unloading hose flanges on the offshore floating storage and offloading vessel to the shuttle tanker, ensuring the safe transfer of crude oil.

[0004] To ensure the functional requirements of the loading manifold unit, the hydraulic coupler needs to be able to accurately install the unloading hose flange and tightly connect it to the oil pipeline, while maintaining a continuous and stable delivery of crude oil under heavy loads. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic coupler for oil pipelines to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydraulic coupler for an oil pipeline, comprising a coupler valve body, an oil inlet, an oil outlet, a disc valve, an external hydraulic assembly, an internal hydraulic assembly, a movable hydraulic clamp, a guide shaft, a controller A, and a controller B; the coupler valve body has an oil inlet and an oil outlet on both sides respectively, the disc valve is embedded in the oil outlet, the external hydraulic assembly is fixed to the outside of the coupler valve body, the movable hydraulic clamp is connected to the external hydraulic assembly, the controller A and controller B are fixed to the valve body surface on one side of the external hydraulic assembly, the controller A is electrically connected to the external hydraulic assembly, the internal hydraulic assembly is fixed to the inside of the coupler valve body, the controller B is electrically connected to the internal hydraulic assembly, and the guide shaft is fixed to the coupler valve body near the oil outlet side.

[0007] In a preferred embodiment of this invention, the external hydraulic assembly includes an external hydraulic cylinder body, a front cylinder chamber A, a rear cylinder chamber A, a hydraulic push shaft A, a front hydraulic pipe A, a rear hydraulic pipe A, and a caliper mounting seat. The external hydraulic cylinder body is fixed to the surface of the coupler valve body near the oil inlet. One end of the hydraulic push shaft A is disposed within the external hydraulic cylinder body, and the other end extends out of the external hydraulic cylinder body. A caliper mounting seat is fixed to the end of the hydraulic push shaft A extending from the external hydraulic cylinder body. The hydraulic push shaft A divides the external hydraulic cylinder body into a front cylinder chamber A and a rear cylinder chamber A. The front hydraulic pipe A is connected to the front cylinder chamber A, and the rear hydraulic pipe A is connected to the rear cylinder chamber A.

[0008] As a preferred embodiment of this utility model, the coupling valve body is fixed with three limiting slots around the side near the oil outlet. Friction tension blocks are fixed inside the three limiting slots, and the outer sides are fixedly connected by cylindrical pins. The movable hydraulic clamp passes through the limiting slots.

[0009] As a preferred embodiment of this utility model, the movable hydraulic clamp has a rotating hole at the bottom, the rotating hole is rotatably connected to the clamp mounting base by a rotating pin, the movable hydraulic clamp has opening and closing inclined surfaces on the inner and outer sides, and a rubber clamping pad is fixed to the head of the movable hydraulic clamp.

[0010] As a preferred embodiment of this utility model, the guide shaft is provided in three parts and fixed to the coupler valve body at intervals with the limiting slot, and the inner side of the guide shaft is a multi-segment guide slope that is inclined inward.

[0011] In a preferred embodiment of this invention, the internal hydraulic assembly includes an internal hydraulic cylinder body, a front cylinder chamber B, a rear cylinder chamber B, an internal hydraulic cylinder base, a hydraulic push shaft B, a front hydraulic pipe B, and a rear hydraulic pipe B. The internal hydraulic cylinder body is fixed within the coupler valve body. One end of the hydraulic push shaft B is disposed within the internal hydraulic cylinder body, and the other end extends from the internal hydraulic cylinder body and is fixedly connected to the disc valve. The internal hydraulic cylinder base is fixed to the bottom of the internal hydraulic cylinder body. The hydraulic push shaft B divides the internal hydraulic cylinder body into a front cylinder chamber B and a rear cylinder chamber B. The front hydraulic pipe B is connected within the front cylinder chamber B, and the rear hydraulic pipe B is connected within the rear cylinder chamber B.

[0012] As a preferred embodiment of this utility model, the outer end of the inner hydraulic cylinder base is conical, with multiple oil unloading holes in the middle, and several oil unloading channels are provided at the connection between the inner hydraulic cylinder body and the coupler valve body, with the force unloading direction of the conical surface of the inner hydraulic cylinder base facing the oil unloading channels.

[0013] As a preferred embodiment of this utility model, a rubber sealing layer is fixed inside the oil outlet, and the rubber sealing layer and the disc valve seal the oil outlet. The inner side of the disc valve is an arc-shaped stress-relieving surface.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention utilizes controllers A and B. Controller A pressurizes the rear cylinder A of the external hydraulic assembly, pushing out the hydraulic push shaft A and controlling the movable hydraulic clamp to open outwards. After the oil pipeline is installed at the oil outlet, controller A pressurizes the front cylinder A of the external hydraulic assembly, causing the hydraulic push shaft A to retract and controlling the movable hydraulic clamp to close inwards, clamping and sealing the oil pipeline with the oil outlet. At this time, controller B pressurizes the rear cylinder B of the internal hydraulic assembly, pushing the hydraulic push shaft B forward, causing the disc valve to extend forward and detach from the rubber sealing layer, forming an oil delivery channel. The two controllers coordinate the operation of the internal and external hydraulic assemblies to ensure the oil pipeline is clamped and sealed, allowing for smooth oil delivery.

[0016] This invention designs the outer end of the inner hydraulic cylinder base into a conical shape. During oil transportation, the conical unloading surface breaks through the impact surface of the crude oil in the oil pipeline, guiding the crude oil into the unloading channel. This reduces the impact force of the crude oil on the inner hydraulic components during transportation, preventing the oil transportation from being interrupted due to the inability of the inner hydraulic components to continuously maintain the disc valve to form an oil transportation channel caused by the impact of crude oil. At the same time, the conical unloading surface can effectively prevent crude oil from accumulating and leaking at the inner hydraulic cylinder base, reducing the probability of damage to the inner hydraulic components and increasing their service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the main planar structure of this utility model;

[0019] Figure 3 This is a top view schematic diagram of the structure of this utility model;

[0020] Figure 4 This is an enlarged planar structural diagram of the internal hydraulic cylinder base of this utility model.

[0021] In the diagram: 1. Coupler valve body; 2. Oil inlet; 3. Oil outlet; 301. Rubber sealing layer; 4. Disc valve; 401. Arc-shaped unloading surface; 5. External hydraulic assembly; 501. External hydraulic cylinder body; 502. Front cylinder chamber A; 503. Rear cylinder chamber A; 504. Hydraulic push shaft A; 505. Front hydraulic pipeline A; 506. Rear hydraulic pipeline A; 507. Caliper mounting base; 6. Internal hydraulic assembly; 601. Internal hydraulic cylinder body; 602. Front cylinder chamber B; 603. 604. Rear cylinder chamber B; 605. Inner hydraulic cylinder base; 606. Hydraulic push shaft B; 607. Front hydraulic pipeline B; 608. Rear hydraulic pipeline B; 609. Oil unloading hole; 6000. Oil unloading channel; 700. Movable hydraulic clamp; 701. Rotating hole; 702. Opening and closing inclined plane; 703. Rubber clamping pad; 800. Guide shaft; 801. Multi-segment guide inclined plane; 9. Controller A; 10. Controller B; 11. Limiting slot; 12. Friction tensioning block; 13. Cylindrical pin. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4 As shown, this utility model provides a hydraulic coupler for an oil pipeline. The hydraulic coupler for an oil pipeline includes a coupler valve body 1, an oil inlet 2, an oil outlet 3, a disc valve 4, an external hydraulic assembly 5, an internal hydraulic assembly 6, a movable hydraulic clamp 7, a guide shaft 8, a controller A9, and a controller B10. The coupler valve body 1 has an oil inlet 2 and an oil outlet 3 on both sides, and the disc valve 4 is embedded in the oil outlet 3. The external hydraulic assembly 5 is fixed to the outside of the coupler valve body 1, and the movable hydraulic clamp 7 is connected to the external hydraulic assembly 5. The controller A9 and the controller B10 are fixed to the valve body surface on one side of the external hydraulic assembly 5. The controller A9 is electrically connected to the external hydraulic assembly 5. The internal hydraulic assembly 6 is fixed inside the coupler valve body 1, and the controller B10 is electrically connected to the internal hydraulic assembly 6. The guide shaft 8 is fixed on the coupler valve body 1 near the oil outlet 3.

[0024] refer to Figure 2The outer hydraulic cylinder body 501 is fixed on the surface of the coupler valve body 1 near the oil inlet 2. One end of the hydraulic push shaft A504 is installed inside the outer hydraulic cylinder body 501, and the other end extends out of the outer hydraulic cylinder body 501. A caliper mounting seat 507 is fixed on the end of the hydraulic push shaft A504 that extends out of the outer hydraulic cylinder body 501. The hydraulic push shaft A504 divides the outer hydraulic cylinder body 501 into a front cylinder chamber A502 and a rear cylinder chamber A503. The front hydraulic pipe A505 is connected to the front cylinder chamber A502, and the rear hydraulic pipe A506 is connected to the rear cylinder chamber A503.

[0025] The inner hydraulic cylinder body 601 is fixed inside the coupler valve body 1. One end of the hydraulic push shaft B605 is installed inside the inner hydraulic cylinder body 601, and the other end extends out of the inner hydraulic cylinder body 601 and is fixedly connected to the disc valve 4. The inner hydraulic cylinder base 604 is fixed to the bottom of the inner hydraulic cylinder body 601. The hydraulic push shaft B605 divides the inner hydraulic cylinder body 601 into a front cylinder chamber B602 and a rear cylinder chamber B603. The front hydraulic pipe B606 is connected to the front cylinder chamber B602, and the rear hydraulic pipe B607 is connected to the rear cylinder chamber B603.

[0026] Three limiting slots 11 are fixed around the side of the coupler valve body 1 near the oil outlet 3. Friction tension blocks 12 are fixed inside the three limiting slots 11, and are fixedly connected to the outside by cylindrical pins 13. The movable hydraulic clamp 7 passes through the limiting slots 11.

[0027] The movable hydraulic clamp 7 has a rotating hole 701 at the bottom, and the rotating hole 701 is rotatably connected to the clamp mounting base 507 by a rotating pin. The movable hydraulic clamp 7 has opening and closing inclined surfaces 702 on the inner and outer sides, and a rubber clamping pad 703 is fixed at the head of the movable hydraulic clamp 7.

[0028] By setting controllers A9 and B10, controller A9 controls the rear cylinder chamber A503 of the external hydraulic assembly 5 to pressurize and push out the hydraulic push shaft A504, thereby controlling the movable hydraulic clamp 7 to open outwards. After the oil pipeline is installed at the oil outlet 3, controller A9 controls the front cylinder chamber A502 of the external hydraulic assembly 5 to pressurize and retract the hydraulic push shaft A504, thereby controlling the movable hydraulic clamp 7 to close inwards, clamping and sealing the oil pipeline with the oil outlet 3.

[0029] The controller B10 pressurizes the rear cylinder chamber B603 of the internal hydraulic component 6, pushing the hydraulic push shaft B605 forward so that the disc valve 4 extends forward and separates from the rubber sealing layer 301 to form an oil delivery channel. The two controllers control the internal and external hydraulic components to cooperate, and the oil delivery pipe delivers oil smoothly.

[0030] refer to Figure 2 and Figure 4The outer end of the inner hydraulic cylinder base 604 is conical, with multiple oil discharge holes 608 in the middle. Several oil discharge channels 609 are provided at the connection between the inner hydraulic cylinder body 601 and the coupler valve body 1. The force discharge direction of the conical surface of the inner hydraulic cylinder base 604 is directly opposite to the oil discharge channel 609.

[0031] By designing the outer end of the inner hydraulic cylinder base 604 into a conical shape, the conical unloading surface breaks the impact surface of the crude oil in the oil pipeline during oil transportation, guiding the crude oil into the unloading channel 609. This reduces the impact force of the crude oil on the inner hydraulic component 6 during oil transportation, preventing the oil transportation from being interrupted due to the inability of the inner hydraulic component 6 to continuously maintain the disc valve 4 to form an oil transportation channel caused by the impact of crude oil. At the same time, the conical unloading surface can effectively prevent crude oil from accumulating and leaking at the inner hydraulic cylinder base 604, reducing the probability of damage to the inner hydraulic component 6 and increasing its service life.

[0032] refer to Figure 1 , Figure 2 and Figure 3 Three guide shafts 8 are installed on the coupler valve body 1 and fixed at intervals with the limiting slot 11. The inner side of the guide shaft 8 is a multi-segment guide slope 801 that is inclined inward. When the oil pipeline is installed, the pipeline port moves along the multi-segment guide slope 801 and is finally fixed to the oil outlet 3 under the limit of the three guide shafts 8, so as to prevent the pipeline port and the oil outlet 3 from being misaligned.

[0033] refer to Figure 1 and Figure 2 A rubber sealing layer 301 is fixed inside the oil outlet 3. When the oil pipeline is not connected, pressurizing fluid is injected into the front cylinder chamber B602 of the internal hydraulic component 6, and the hydraulic push shaft B605 moves backward, causing the disc valve 4 to tightly adhere to the rubber sealing layer 301 to seal the oil outlet 3 and prevent crude oil leakage. After the oil pipeline is connected and oil transportation begins, the disc valve 4 extends forward and separates from the rubber sealing layer 301 to form an oil transportation channel. The inner side of the disc valve 4 is an arc-shaped unloading surface 401, which unloads the crude oil to both sides, reduces the impact force of the crude oil on the pipeline connection during oil transportation, and maintains the continuous stability of the oil transportation process.

[0034] The working principle and usage process of this utility model are as follows: When installing the oil pipeline, the controller A9 pressurizes the rear cylinder chamber A503 of the external hydraulic assembly 5, pushing out the hydraulic push shaft A504. This causes the clamp mounting seat 507 fixed on the hydraulic push shaft A504 to move forward, thereby pushing the movable hydraulic clamp 7 forward. Since the movable hydraulic clamp 7 passes through the limiting slot 11, it can only rotate around the bottom rotating pin, causing it to open outward. At this time, the traction rope pulls the oil pipeline opening along the multi-segment guide inclined plane 801. After being limited by the three guide shafts 8 and aligned with the oil outlet 3, the controller A9 pressurizes the front cylinder chamber A502 of the external hydraulic assembly 5, causing the hydraulic push shaft A504 to retract. The movable hydraulic clamp 7 moves backward, causing it to close inward, thus opening the oil pipeline. The oil pipeline is clamped and sealed to the oil outlet 3, and the external hydraulic assembly maintains this state. Subsequently, the controller B10 controls the rear cylinder chamber B603 of the internal hydraulic assembly 6 to pressurize and push the hydraulic push shaft B605 forward, causing the disc valve 4 to extend forward and detach from the rubber sealing layer 301 to form an oil delivery channel for oil delivery. The inner side of the disc valve 4 is an arc-shaped unloading surface 401, which unloads the crude oil to both sides, reducing the impact force of the crude oil on the pipeline connection during oil delivery and maintaining the continuous stability of the oil delivery process. After the oil delivery is completed, the controller B10 controls the front cylinder chamber B602 of the internal hydraulic assembly 6 to pressurize and retract the hydraulic push shaft B605 backward, causing the disc valve 4 to retract backward and tightly close on the rubber sealing layer 301, completing the sealing operation of the oil outlet 3. Then, the operation steps of the external hydraulic assembly during the installation of the oil pipeline are repeated in reverse to complete the disassembly of the oil pipeline.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic coupler for oil pipelines, characterized in that: The system includes a coupler valve body (1), an oil inlet (2), an oil outlet (3), a disc valve (4), an external hydraulic assembly (5), an internal hydraulic assembly (6), a movable hydraulic clamp (7), a guide shaft (8), a controller A (9), and a controller B (10). The coupler valve body (1) has an oil inlet (2) and an oil outlet (3) on both sides. The disc valve (4) is embedded in the oil outlet (3). The external hydraulic assembly (5) is fixed to the outside of the coupler valve body (1). The movable hydraulic clamp (7) is connected to the external hydraulic assembly (5). The controller A (9) and the controller B (10) are fixed to the valve body surface on one side of the external hydraulic assembly (5). The controller A (9) is electrically connected to the external hydraulic assembly (5). The internal hydraulic assembly (6) is fixed inside the coupler valve body (1). The controller B (10) is electrically connected to the internal hydraulic assembly (6). The guide shaft (8) is fixed on the coupler valve body (1) near the oil outlet (3).

2. The hydraulic coupler for an oil pipeline according to claim 1, characterized in that: The external hydraulic assembly (5) includes an external hydraulic cylinder body (501), a front cylinder chamber A (502), a rear cylinder chamber A (503), a hydraulic push shaft A (504), a front hydraulic pipe A (505), a rear hydraulic pipe A (506), and a caliper mounting base (507); the external hydraulic cylinder body (501) is fixed to the surface of the coupler valve body (1) near the oil inlet (2), and one end of the hydraulic push shaft A (504) is disposed inside the external hydraulic cylinder body (501), the other end... The end extends from the outer hydraulic cylinder body (501), and the hydraulic push shaft A (504) is fixed with a caliper mounting seat (507) on one end extending from the outer hydraulic cylinder body (501). The hydraulic push shaft A (504) divides the outer hydraulic cylinder body (501) into a front cylinder chamber A (502) and a rear cylinder chamber A (503). The front hydraulic pipe A (505) is connected to the front cylinder chamber A (502), and the rear hydraulic pipe A (506) is connected to the rear cylinder chamber A (503).

3. The hydraulic coupler for an oil pipeline according to claim 1, characterized in that: The coupling valve body (1) has three limiting slots (11) fixed around the side near the oil outlet (3). The three limiting slots (11) have friction tension blocks (12) fixed inside and cylindrical pins (13) fixed outside. The movable hydraulic clamp (7) passes through the limiting slots (11).

4. A hydraulic coupler for an oil pipeline according to claim 1, characterized in that: The movable hydraulic clamp (7) has a rotating hole (701) at the bottom. The rotating hole (701) is rotatably connected to the clamp mounting base (507) by a rotating pin. The movable hydraulic clamp (7) has opening and closing inclined surfaces (702) on the inner and outer sides. The movable hydraulic clamp (7) has a rubber clamping pad (703) fixed at the head.

5. A hydraulic coupler for an oil pipeline according to claim 1, characterized in that: The guide shaft (8) is provided in three segments and is fixed on the coupler valve body (1) at intervals with the limiting slot (11). The inner side of the guide shaft (8) is a multi-segment guide slope (801) that is inclined inward.

6. A hydraulic coupler for an oil pipeline according to claim 1, characterized in that: The internal hydraulic assembly (6) includes an internal hydraulic cylinder body (601), a front cylinder chamber B (602), a rear cylinder chamber B (603), an internal hydraulic cylinder base (604), a hydraulic push shaft B (605), a front hydraulic pipe B (606), and a rear hydraulic pipe B (607); the internal hydraulic cylinder body (601) is fixed inside the coupler valve body (1), and one end of the hydraulic push shaft B (605) is disposed inside the internal hydraulic cylinder body (601), and the other end is connected to the internal hydraulic cylinder. The cylinder body (601) extends out and is fixedly connected to the disc valve (4). The inner hydraulic cylinder base (604) is fixed at the bottom of the inner hydraulic cylinder body (601). The hydraulic push shaft B (605) divides the inner hydraulic cylinder body (601) into a front cylinder chamber B (602) and a rear cylinder chamber B (603). The front hydraulic pipe B (606) is connected in the front cylinder chamber B (602), and the rear hydraulic pipe B (607) is connected in the rear cylinder chamber B (603).

7. A hydraulic coupler for an oil pipeline according to claim 6, characterized in that: The outer end of the inner hydraulic cylinder base (604) is conical, with multiple oil discharge holes (608) in the middle. Several oil discharge channels (609) are provided at the connection between the inner hydraulic cylinder body (601) and the coupler valve body (1). The unloading direction of the conical surface of the inner hydraulic cylinder base (604) is directly opposite to the oil discharge channel (609).

8. A hydraulic coupler for an oil pipeline according to claim 1, characterized in that: A rubber sealing layer (301) is fixed inside the oil outlet (3). The rubber sealing layer (301) and the disc valve (4) seal the oil outlet (3). The inner side of the disc valve (4) is an arc-shaped unloading surface (401).

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