CN106369236A - Vertical clamp type connector for underwater manifold - Google Patents

Abstract

The invention discloses a vertical clamp type connector for an underwater manifold. The vertical clamp type connector comprises a lower pipe and a spherical pipe. A connecting boss is arranged on the top of the lower pipe, and the lower surface of the connecting boss is in an inverted cone frustum shape. The lower pipe is connected with a connecting ring through sealing rings. The connecting ring is connected with the spherical pipe. The spherical pipe is sleeved with a hoisting ring. The hoisting ring is sleeved with a support. The lower end of the support wraps the connecting boss. The hoisting ring and the support are fixed through a clamp. A circular ring boss is arranged at the upper middle portion of the lower pipe. The cylindrical face of the circular ring boss is connected with a fixing sleeve through a spring gasket. The fixing sleeve is provided with a plurality of fixing blocks. The fixing blocks are connected with a barrel at the same time and provided with bevels. Guiding sleeves are located on the bevels of the fixing blocks, and internally provided with positioning rings. According to the vertical clamp type connector for the underwater manifold, a spherical pipe connector part is used, crashing of the whole connector due to stress bending and rotating of the manifold in the underwater manifold connecting process is avoided, and operability of an ROV is greatly improved.

Description

A vertical clamp type connector for underwater manifold

technical field

The invention relates to a vertical clamp type connector of an underwater manifold, belonging to the field of connecting machines.

Background technique

At present, the development of deep-water oil and gas fields is a new field of energy industry with high investment, high risk and high-tech intensive. Deepwater subsea connectors are mainly used for the connection between pipelines of underwater production facilities, such as subsea trees and subsea manifolds, subsea pipelines and subsea trees, PLET and PLEM, etc., which are an important guarantee for the safe production of deepwater oil and gas . At present, there are mainly two types of underwater connectors used in deepwater oil and gas field development projects at home and abroad: sleeve connectors and clamp connectors. The design and manufacturing technology of underwater connectors has been monopolized by foreign oil equipment companies for many years. Now it is urgent to form a deepwater underwater connector design technology with my country's independent intellectual property rights to provide technical and equipment support for my country's deepwater oil and gas development.

At present, there are two main structures of underwater manifold connectors:

(1) A clamp type connector for horizontal connection. The clamp is a connection device for connecting grooved pipe fittings, valves and pipeline fittings, and is used to tighten the fast joints. Use the bolts and nuts on the clamp to fasten the clamp and the pipe, etc. However, when there is medium in the flow channel of the pipeline, due to the impact of the medium, the effect of thermal stress or other external loads, the clamp and the pipeline will move with each other, which will reduce the sealing effect, cause leakage and even hinder the production of the entire manifold system.

(2) A sleeve type connector for vertical connection. Sleeve connector is a connection device that grasps grooved pipe fittings, valves and pipeline fittings through claws, and is used to grasp between quick connectors. Although the connector has a compact structure and good sealing effect, its driving force comes from the hydraulic drive of the working tool, and its structure is huge and complicated, especially when it takes too long to maintain, which increases the labor intensity of employees and increases the downtime. Reduced well production.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention proposes a vertical clamp connector for underwater manifolds, which uses a spherical pipe joint part to avoid the The bending and rotation of the force causes the entire connector to collapse, which greatly improves the maneuverability of the ROV robot.

Technical solution: In order to solve the above technical problems, the underwater manifold vertical clamp connector of the present invention includes a lower tube and a spherical tube. The top of the lower tube is provided with a connecting boss, and the lower surface of the connecting boss is inverted. Conical frustum shape, the lower tube is connected with the connecting ring through the sealing ring, the connecting ring is connected with the spherical pipe, there is a lifting ring outside the spherical pipe, the lifting ring is covered with a bracket, the lower end of the bracket wraps the connecting boss, the lifting ring and the bracket pass through the clamp Fixed; the middle and upper part of the lower tube is provided with a ring boss, and a circular support block is provided under the ring boss to support the ring boss, and the cylindrical surface of the ring boss is connected to the fixed sleeve through a spring washer , the fixed sleeve includes a cylindrical barrel, the top of the barrel is provided with a round hole, the round hole is connected with the spring washer, the lower end of the barrel is extended with a ring mounting plate, and several fixing blocks are installed on the ring mounting plate, The fixed block is connected with the barrel at the same time, the fixed block is provided with an inclined surface, the guide sleeve is located on the inclined surface of the fixed block, and a positioning ring is arranged inside the guide sleeve.

Preferably, an upper boss extends upwards and a lower boss extends downwards from the bottom of the connecting ring, the upper boss and the connecting ring form a groove, and the lifting ring and one end of the spherical pipe are inserted into the groove.

Preferably, the bracket includes a left bracket unit and a right bracket unit, the left bracket unit and the right bracket unit both include a semi-cylindrical body with a semicircular cross-section, upper and lower ends of the inner wall of the semi-cylindrical body are respectively extended with upper limit bosses and the lower limit boss, the upper limit boss is pressed on the upper boss, the lower limit boss wraps the connecting boss, and a locking plate is extended on both sides of the semi-cylindrical body, and bolts are installed on the locking plate. Bolts and locking plates lock the left bracket unit and the right bracket unit.

As a preference, a fastening screw is installed on the lower boss, the fastening screw is connected with the positioning ejector rod, one end of the positioning ejector rod is inserted into the sealing ring, and the positioning ejector rod is driven to be inserted into the sealing ring by turning the fastening screw , lock the sealing ring.

Beneficial effects: the underwater manifold vertical clamp type connector of the present invention has the following advantages:

(1) The clamp connector is placed vertically to avoid the reduction of the sealing effect caused by the mutual movement between the clamp and the pipe due to the impact of the medium, the action of thermal stress or the action of other external loads.

(2) The components of the spherical tube are connected to each other through a series of parts, so that the assembly of the parts is convenient, safe and reliable, and the structure is simple. Especially during maintenance, the time consumption is greatly reduced, the labor intensity of employees is reduced, the downtime of production is reduced, and the production of oil wells is improved.

(3) The spherical pipe component uses a spherical pipe joint part, which avoids the collapse of the entire connector due to the bending and rotation of the underwater manifold during the connection process of the underwater manifold, and greatly improves the maneuverability of the ROV robot.

Description of drawings

Fig. 1 is a structural diagram of the fixed composition of the manifold of the present invention.

Fig. 2 is a structural diagram of the spherical pipe connection of the present invention.

Figure 3 is an assembly diagram of the present invention.

Fig. 4 is a three-dimensional view of the fixed sleeve.

Figure 5 is a three-dimensional view of the manifold connector.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in Figures 1 to 5, the vertical clamp connector for underwater manifolds of the present invention includes a lower tube 7 and a spherical tube 12, the lower tube 7 is a HUB tube, and the top of the lower tube 7 is provided with a connecting protrusion platform, the lower surface 22 of the connecting boss is an inverted truncated cone shape, and the inverted truncated cone shape means that the diameter of the upper end is greater than the diameter of the lower end. The lower surface 22 of the formed conical truncated platform is convenient to grasp the lower tube 7, and the lower tube 7 is connected to the tube through the sealing ring. The ring 9 is connected, the sealing ring is a VX-shaped sealing ring 18, the connecting ring 9 is connected with the spherical pipe 12, and a Y-shaped sealing ring 13 is arranged between the connecting ring 9 and the spherical pipe 12, and the two Y-shaped sealing rings 13 seal the spherical pipe 12 internal and external environments, the spherical tube 12 includes a circular tube 121 and a hemispherical tube 122 located below the circular tube 121, the spherical tube 12 is covered with a lifting ring 10, and the inner wall of the lifting ring 10 is in a spherical shape that matches the spherical tube 12. The lifting ring 10 is covered with a bracket 8, the lower end of the bracket 8 wraps the connecting boss, the lifting ring 10 and the bracket 8 are fixed by the clamp 11, the lifting ring 10 is lifted, and the lifting ring 10 drives the connecting ring 9 and the bracket 8 to move, thereby driving the lower pipe 7 Move; the middle and upper part of the down pipe 7 is provided with a ring boss, and a circular support block 4 supporting the ring boss is arranged below the ring boss, and the cylindrical surface of the ring boss passes through the spring washer 19 and The fixed sleeve 23 is connected, and the fixed sleeve 23 includes a cylindrical cylinder 232. The top of the cylinder 232 is provided with a round hole, which is connected with the spring washer 19. The lower end of the cylinder 232 is extended with a ring mounting plate 231, and the ring is installed The plate 231 is installed on the support platform 1 through the screw 20, and several fixing blocks 2 are installed on the ring mounting plate 231, and the fixing blocks 2 are connected with the cylinder body 232 at the same time, and the fixing block 2 is provided with a slope, and the guide sleeve 3 is located on the fixing block. 2, a positioning ring 6 is provided in the guide sleeve 3.

In the present invention, the bottom end of the connecting ring 9 extends upwards with an upper boss 21 and extends downwards with a lower boss, the upper boss 21 and the connecting ring 9 form a groove, and one end of the lifting ring 10 and the spherical pipe 12 is inserted into the In the groove, move the hoisting ring 10, and the hoisting ring 10 drives the upper boss 21 to move, thereby driving the bracket 8 to move. A fastening screw 16 is installed on the lower boss, and the fastening screw 16 is connected with the positioning push rod 17, and one end of the positioning push rod 17 is inserted into the sealing ring, and by turning the fastening screw 16, the positioning push rod 17 is inserted into the In the sealing ring, lock the sealing ring to prevent falling off during the grabbing process, wherein two O-shaped sealing rings 15 are also embedded on the upper and lower sealing surfaces.

In the present invention, the bracket 8 includes a left bracket unit and a right bracket unit, and the left bracket unit and the right bracket unit both include a semi-cylindrical body with a semicircular cross-section, and upper and lower ends of the inner wall of the semi-cylindrical body are respectively extended with upper limits. Position boss and lower limit boss, the upper limit boss is pressed on the upper boss 21, the lower limit boss wraps the connecting boss, and locking plates are extended on both sides of the semi-cylindrical body, and the locking plate is installed There are bolts 14, and the left bracket unit and the right bracket unit are locked through the bolts 14 and the locking plate, and the lower tube 7 and the connecting ring 9 are clamped by the left bracket unit and the right bracket unit at the same time.

As shown in Figure 3, the assembly relationship of the entire connector can be seen. First fix the fixed component of the manifold on the support platform 1, then the ROV grasps the connecting component of the spherical pipe to realize automatic centering through the bevel that comes with the component, assembles it with the fixed component of the manifold, and puts the guide sleeve 3 is installed on the fixed sleeve 2, and then the positioning ring 6 is installed, and the bracket 8 is installed on the positioning ring 6 and the connecting ring 9. In order to prevent the bottom plankton etc. from being deposited in the guide sleeve 3, a baffle plate 5 is added on the guide sleeve 3. ROV catches two hoops 11 and is introduced and matched by the bolt shaft on the support 8, and finally screws on again, has realized the installation of whole device like this.

The working principle of the present invention is as follows:

Before installation, two semi-cylindrical support blocks 4 are used to support the HUB pipe 7, and the spring washer 19 is used to transmit the pressure of the fixing sleeve 2 so as to fix the HUB pipe 7 on the support platform 1. Then the entire manifold fixing component is fixed on the support platform 1 by screws 20 .

During installation, the spherical pipe 12 is grasped by the ROV, and the entire spherical pipe connection component is automatically centered through the oblique angle of the component, and it is assembled with the fixed component of the manifold. Wherein, the rotating fastening screw 16 pushes the positioning ejector rod 17 to protrude forward, and supports the VX-type sealing ring 18 in the connecting ring 9 to prevent it from falling off during the grabbing process. There are two O-rings 15. A boss is designed at the bottom corner of the hoisting ring 10 to be connected with the connecting ring 9 . The spherical tube 12 is placed between the lifting ring 10 and the connecting ring 9 . Two Y-shaped sealing rings 13 seal the environment inside and outside the spherical tube 12 . Then the guide sleeve 3 is installed on the fixed sleeve 2, and then the positioning ring 6 is installed, and the bracket 8 is installed on the positioning ring 6 and the connecting ring 9. In order to prevent the bottom plankton etc. from being deposited in the guide sleeve 3, a baffle plate 5 is added on the guide sleeve 3. ROV catches two hoops 11 and is introduced and matched by the bolt shaft on the support 8, and finally screws on again, has realized the installation of whole device like this. After the entire connector is installed, no matter what type of manifold it is connected to, the entire connector will not collapse due to the force bending and rotation of the manifold. And it will not loosen when placed vertically. The whole connector is composed of 3 parts, which is easy to install and has strong maneuverability of the ROV robot.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications are also possible. It should be regarded as the protection scope of the present invention.

Claims (4)

1. A vertical clamp type connector for an underwater manifold, characterized in that: it includes a lower tube and a spherical tube, the top of the lower tube is provided with a connecting boss, and the lower surface of the connecting boss is in the shape of an inverted truncated cone, The lower tube is connected to the connecting ring through the sealing ring, and the connecting ring is connected to the spherical pipe. There is a lifting ring on the outer casing of the spherical pipe, and a bracket on the outer casing of the lifting ring. The lower end of the bracket wraps the connecting boss, and the lifting ring and the bracket are fixed by a clamp; The middle and upper part of the lower tube is provided with a ring boss, and a circular support block for supporting the ring boss is arranged under the ring boss. The cylindrical surface of the ring boss is connected with the fixed sleeve through a spring washer, and the fixed sleeve includes Cylindrical barrel, the top of the barrel is provided with a round hole, the round hole is connected with the spring washer, the lower end of the barrel is extended with a ring mounting plate, and several fixing blocks are installed on the ring mounting plate, and the fixing block is connected with the spring washer at the same time. The cylinders are connected, the fixed block is provided with an inclined surface, the guide sleeve is located on the inclined surface of the fixed block, and a positioning ring is arranged inside the guide sleeve. 2. The vertical clamp-type connector for underwater manifold according to claim 1, characterized in that: the bottom end of the connecting ring extends upwards with an upper boss and downwards with a lower boss, and the upper boss and The connecting ring forms a groove, and the lifting ring and one end of the spherical pipe are inserted into the groove. 3. The vertical clamp type connector for underwater manifold according to claim 2, characterized in that: the bracket includes a left bracket unit and a right bracket unit, and the left bracket unit and the right bracket unit both have a semicircular section The upper and lower ends of the inner wall of the semi-cylindrical body are respectively extended with an upper limit boss and a lower limit boss. The upper limit boss is pressed on the upper boss, and the lower limit boss wraps the connecting boss. Locking plates are extended on both sides of the cylindrical body, bolts are installed on the locking plates, and the left bracket unit and the right bracket unit are locked by the bolts and the locking plates. 4. The vertical clamp-type connector for underwater manifold according to claim 2, characterized in that: the lower boss is equipped with fastening screws, the fastening screws are connected with the positioning ejector rod, and one end of the positioning ejector rod is inserted into the Into the sealing ring, by turning the fastening screw, the positioning ejector rod is driven to be inserted into the sealing ring, and the sealing ring is locked.