A composite material winding repair mechanism

Abstract

The application discloses a kind of composite material winding repair mechanism, including straight rail and ring rail displacement executing mechanism, epoxy resin mixing and daub mechanism and composite tape sticking mechanism, can be in the repair case of pipeline without stopping oil transmission, through winding multilayer composite tape, short-term reinforcement repair is carried out to pipeline, avoid the higher cost caused by clamp repair or pipe replacement.The device can select different composite tapes according to actual situation to carry out composite material winding repair, so as to realize the winding repair of different materials, different widths and different thicknesses of composite tapes, meet the requirements of different defect repair standards.In addition, since the operation of ring rail and straight rail is realized by servo valve control hydraulic motor, the winding direction and speed of composite tape can be accurately controlled.The axial and radial positions of pressing plate are adjusted by hydraulic cylinder to complete the sticking of composite tape end and pipeline, and the conversion of winding direction at both ends of composite tape in repair area, to ensure the smooth winding of composite material.

Description

Technical Field

[0001] This invention relates to the field of oil and gas pipeline repair technology, and in particular to a composite material winding repair mechanism. Background Technology

[0002] With the rapid development of my country's social economy, the country's demand for oil and gas energy is increasing daily. Relying solely on onshore oil and gas resources cannot adequately meet the needs of national development; only by further exploiting offshore oil and gas can the country's long-term development be promoted. There are many transportation routes for offshore oil and gas to onshore oil depots, among which pipeline transportation has absolute advantages, not only in terms of low cost but also in avoiding the influence of many factors. External corrosion of pipelines is one of the important causes of pipeline damage, especially for subsea pipelines subjected to complex loads over long periods. With the continuous research of numerous scholars and experts on pipeline repair technology, composite material technology for repairing corrosion-damaged pipelines is increasingly being applied to pipeline repair due to its advantages of short repair time, simple repair process, and low repair cost.

[0003] Currently, composite material winding repair equipment for deep-sea pipelines typically employs automated winding mechanisms. These devices usually consist of a winding machine, a resin supply system, a fiber prepreg supply system, and a control system. However, existing equipment has limited automation, is complex to operate, and requires significant manual intervention, thus affecting operational efficiency and repair quality. Summary of the Invention

[0004] The purpose of this invention is to provide a composite material winding repair mechanism to solve the problems existing in the prior art, enabling the winding repair of composite materials on the outer wall of the pipeline without stopping oil transportation. 。

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] A composite material wrapping repair mechanism includes a straight rail and a ring rail displacement actuator, an epoxy resin mixing and coating mechanism disposed on the straight rail and ring rail displacement actuator, and a composite tape bonding mechanism. The straight rail and ring rail displacement actuator includes a straight rail, a ring rail support plate A and a circumferential support plate B connected in parallel and spaced apart by a guide wheel shaft, a ring rail disposed on the ring rail support plate A, a hydraulic motor, a ring rail driving pinion connected to the output end of the hydraulic motor, a ring rail driven pinion meshing with the ring rail driving pinion, a lead screw nut disposed on the ring rail support plate A and the ring rail support plate B, and a slider disposed on the lead screw nut. The slider can slide on the straight rail. The epoxy resin mixing and coating mechanism is used to provide a repair coating for the pipeline, and the composite tape bonding mechanism is used to apply a composite tape to the area to be repaired.

[0007] Preferably, the epoxy resin mixing and coating mechanism includes a magnet mounted on the ring track support plate A, a base plate, a Hall switch mounted on the base plate, a curing agent storage cylinder, a dynamic mixing tube, a resin storage cylinder, an electronic compartment, a guide frame, and a lead screw linear module. Both the resin storage cylinder and the curing agent storage cylinder are connected to the dynamic mixing tube via flexible hoses. Each of the resin storage cylinder and the curing agent storage cylinder contains a piston rod, which is connected via a crossbeam and to the push rod of the stepper motor of the lead screw linear module. The magnet and the Hall switch provide start / stop signals to the stepper motor of the lead screw linear module. The guide frame is equipped with a composite belt and a nylon guide wheel assembly. The front end of the composite belt is fixed to the nylon guide wheel assembly, and the other end of the dynamic mixing tube is connected to the nylon guide wheel assembly via a flexible hose.

[0008] Preferably, the composite tape bonding mechanism includes a support rod, a connecting plate, a radial hydraulic cylinder for the pressure plate, an axial hydraulic cylinder for the pressure plate, and a pressure plate. The axial and radial positions of the pressure plate are adjusted by the hydraulic cylinders to complete the bonding of the end of the composite tape to the pipe.

[0009] Preferably, it also includes a ring track support plate. The base plate of the epoxy resin mixing and coating mechanism is fixed on the ring track and rotated by a hydraulic motor. The ring track support plate is connected to the straight track by a slider.

[0010] The present invention achieves the following technical effects compared to the prior art:

[0011] This invention discloses a composite material winding mechanism, comprising a straight rail and a ring rail displacement actuator, an epoxy resin coating mechanism, and a composite tape bonding mechanism. It enables short-term reinforcement and repair of pipelines by winding multiple layers of composite tape without interrupting oil transport, avoiding the high costs associated with clamp repair or pipe replacement. This device can select different composite tapes for composite material winding repair based on actual conditions, thereby achieving winding repair with composite tapes of different materials, widths, and thicknesses to meet the requirements of different defect repair standards.

[0012] Furthermore, since the operation of the ring and straight rails is controlled by a servo valve-controlled hydraulic motor, the winding direction and speed of the composite tape can be precisely controlled. The axial and radial positions of the pressure plate are adjusted by a hydraulic cylinder to ensure the composite tape ends adhere to the pipe and to change the winding direction at both ends of the composite tape in the repair area, guaranteeing a smooth composite material winding. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional view of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 3 This is a plan view of the overall structure of the present invention;

[0017] Among them, 1—straight rail and ring rail displacement actuator, 1-1—ring rail support plate, 1-2—ring rail support plate A, 1-3—ring rail support plate B, 1-4—slider, 1-5—lead screw nut, 1-6—guide wheel shaft, 1-7—ring rail driven pinion, 1-8—ring rail, 1-9—guide wheel, 1-10—ring rail driving pinion, 1-11—hydraulic motor, 1-12—straight rail, 2—epoxy resin mixing and coating mechanism, 2-1—base plate 2-2—Electronic compartment, 2-3—Screw linear module, 2-4—Guide wheel frame, 2-5—Composite belt, 2-6—Nylon guide wheel assembly, 2-7—Mixed liquid outlet, 2-8—Curing agent storage cylinder, 2-9—Dynamic mixing pipe, 2-10—Resin storage cylinder, 3—Composite belt bonding mechanism, 3-1—Connecting plate, 3-2—Pressure plate axial hydraulic cylinder, 3-3—Support rod, 3-4—Pressure plate radial hydraulic cylinder, 3-5—Pressure plate, 4—Pipeline. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The purpose of this invention is to provide a composite material winding repair mechanism to solve the problems existing in the prior art, enabling the winding repair of composite materials on the outer wall of the pipeline without stopping oil transportation. 。

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] refer to Figures 1 to 3A composite material winding repair mechanism includes a straight rail and a ring rail displacement actuator, an epoxy resin mixing and coating mechanism disposed on the straight rail and ring rail displacement actuator, and a composite tape bonding mechanism. The straight rail and ring rail displacement actuator includes a straight rail, a ring rail support plate A and a circumferential support plate B connected parallel to each other via guide wheel shafts, a ring rail disposed on the ring rail support plate A, a hydraulic motor, a ring rail drive pinion connected to the output end of the hydraulic motor, a ring rail driven pinion meshing with the ring rail drive pinion, and a composite tape bonding mechanism disposed on the ring rail support plate A and the ring rail support plate B. The device includes a lead screw nut on rail support plate B, a slider mounted on the lead screw nut, and the slider can slide on the straight rail. The epoxy resin mixing and coating mechanism provides repair coating for the pipeline, and the composite tape bonding mechanism applies composite tape to the area requiring repair. This invention provides a composite material winding mechanism, comprising a straight rail and ring rail displacement actuator, an epoxy resin coating mechanism, and a composite tape bonding mechanism. It allows for short-term reinforcement repair of the pipeline by winding multiple layers of composite tape without stopping oil transport, avoiding the high costs associated with clamp repair or pipe replacement. This device can select different composite tapes for composite material winding repair based on actual conditions, thereby achieving winding repair of composite tapes of different materials, widths, and thicknesses to meet the requirements of different defect repair standards. Furthermore, since the operation of the ring rail and straight rail is controlled by a servo valve-controlled hydraulic motor, the winding direction and speed of the composite tape can be precisely controlled. The hydraulic cylinder adjusts the axial and radial positions of the pressure plate to complete the bonding of the composite tape end to the pipeline and the conversion of the winding direction of the composite tape at both ends of the repair area, ensuring the composite material is wound smoothly.

[0022] refer to Figure 3 The epoxy resin mixing and coating mechanism includes a magnet mounted on the ring track support plate A, a base plate, a Hall switch mounted on the base plate, a curing agent storage cylinder, a dynamic mixing tube, a resin storage cylinder, an electronic compartment, a guide frame, and a lead screw linear module. Both the resin storage cylinder and the curing agent storage cylinder are connected to the dynamic mixing tube via flexible hoses. Each of the resin storage cylinder and the curing agent storage cylinder contains a piston rod, which is connected via a crossbeam and to the push rod of the stepper motor of the lead screw linear module. The magnet and the Hall switch provide start / stop signals to the stepper motor of the lead screw linear module. The guide frame is equipped with a composite belt and a nylon guide wheel assembly. The front end of the composite belt is fixed to the nylon guide wheel assembly, and the other end of the dynamic mixing tube is connected to the nylon guide wheel assembly via a flexible hose.

[0023] refer to Figure 2 The composite tape bonding mechanism includes a support rod, a connecting plate, a radial hydraulic cylinder for the pressure plate, an axial hydraulic cylinder for the pressure plate, and a pressure plate. The axial and radial positions of the pressure plate are adjusted by the hydraulic cylinders to complete the bonding of the end of the composite tape to the pipe.

[0024] Furthermore, it also includes a ring track support plate. The base plate of the epoxy resin mixing and coating mechanism is fixed on the ring track and rotated by a hydraulic motor. The ring track support plate is connected to the straight track by a slider.

[0025] The method of using this device is as follows:

[0026] Before starting, the characteristics of the pipeline defects were obtained using a 3D scanner, and a 3D image of the defects was generated by a host computer. A 3D model of the defects was obtained through 3D printing, and this model underwent secondary processing to obtain an epoxy resin casting mold. The epoxy filler was then fabricated on land, and strong magnets were embedded within it. With the assistance of divers, the fabricated epoxy filler mold was installed onto the deformed area of ​​the pipeline and fixed in place by the adsorption force between the strong magnets inside the epoxy mold and the pipeline.

[0027] The dry compartment is lowered to the seabed by a deck crane and sealed with the pipeline before being inflated and deflated to create a dry environment. Deck operators control the rotation angle of the ring rail until the free end of the composite strip is placed on the pipeline; the axial hydraulic cylinder of the extended pressure plate extends the pressure plate directly above the composite strip, and then the radial hydraulic cylinder of the extended pressure plate drives the pressure plate to press the free end of the composite strip onto the pipeline;

[0028] The deck operator controls the rotation angle of the ring track until the magnetic switch senses the magnet. At this point, the composite material application mechanism starts working, the motor begins to rotate, and the linear actuator drives the piston to push the AB adhesive into the dynamic mixing tube for mixing. Controlling the linear and ring track motors ensures that the composite belt can achieve partial coverage between adjacent applications. After 5 minutes of operation, the linear and ring tracks stop moving. The deck operator then controls the rotation angle of the ring track until the magnetic switch senses the magnet, at which point the composite material application mechanism stops working.

[0029] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0030] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A composite material winding repair mechanism, characterized in that, The device includes a straight rail and a ring rail displacement actuator, an epoxy resin mixing and coating mechanism disposed on the straight rail and ring rail displacement actuator, and a composite tape bonding mechanism. The straight rail and ring rail displacement actuator includes a straight rail, a ring rail support plate A and a circumferential support plate B connected in parallel and spaced apart by a guide wheel shaft, a ring rail disposed on the ring rail support plate A, a hydraulic motor, a ring rail driving pinion connected to the output end of the hydraulic motor, a ring rail driven pinion meshing with the ring rail driving pinion, a lead screw nut disposed on the ring rail support plate A and the ring rail support plate B, and a slider disposed on the lead screw nut. The slider can slide on the straight rail. The epoxy resin mixing and coating mechanism is used to provide a repair coating for the pipeline, and the composite tape bonding mechanism is used to apply a composite tape to the area to be repaired. The epoxy resin mixing and coating mechanism includes a magnet mounted on the ring track support plate A, a base plate, a Hall switch mounted on the base plate, a curing agent storage cylinder, a dynamic mixing tube, a resin storage cylinder, an electronic compartment, a guide frame, and a lead screw linear module. Both the resin storage cylinder and the curing agent storage cylinder are connected to the dynamic mixing tube via flexible hoses. Each of the resin storage cylinder and the curing agent storage cylinder contains a piston rod, which is connected via a crossbeam and to the push rod of the stepper motor of the lead screw linear module. The magnet and the Hall switch provide start / stop signals to the stepper motor of the lead screw linear module. The guide frame is equipped with a composite belt and a nylon guide wheel assembly. The front end of the composite belt is fixed to the nylon guide wheel assembly, and the other end of the dynamic mixing tube is connected to the nylon guide wheel assembly via a flexible hose. The composite tape bonding mechanism includes a support rod, a connecting plate, a radial hydraulic cylinder for the pressure plate, an axial hydraulic cylinder for the pressure plate, and a pressure plate. The axial and radial positions of the pressure plate are adjusted by the hydraulic cylinders to complete the bonding of the end of the composite tape to the pipe.

2. The composite material winding repair mechanism according to claim 1, characterized in that, It also includes a ring track support plate, the base plate of the epoxy resin mixing and coating mechanism is fixed on the ring track and rotated by a hydraulic motor, and the ring track support plate is connected to the straight track by a slider.

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