Offshore flange connection type hose lowering, recycling and connecting auxiliary device

Abstract

The invention discloses a connection auxiliary device for lowering and recycling an offshore flange connection type hose, and relates to the technical field of offshore drilling construction, which comprises a base bracket, a rotating wheel frame and a sliding plate bracket, one side of the base support is rotationally connected with a lower guide wheel and a front guide wheel, and the lower guide wheel and the front guide wheel are arranged in an up-down staggered mode to form a guide space for limiting and guiding a flange hose. The rotating wheel frame is rotationally connected to the base support, a plurality of rotating wheel guide wheels are rotationally connected to the rotating wheel frame, and the hose is lapped on the rotating wheel guide wheels; the sliding plate support is arranged on one side of the top of the base support, a lower clamping plate and an upper clamping plate which can be opened and closed are arranged on the sliding plate support, and when the lower clamping plate and the upper clamping plate are closed, a clamping opening for clamping a lower flange of the flange hose is formed. Through the synergistic effect of the base support, the rotating wheel frame and the sliding plate support, the stable guiding and clamping functions of the flange hose are achieved, the labor intensity of workers is effectively reduced, the construction efficiency of lowering and recycling the hose is improved, and meanwhile the operation risk is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore drilling construction, and more specifically, to a long-distance mud return hose lowering and recovery device applied to a deep-sea dual-gradient drilling system. Background Art

[0002] The deep-sea dual-gradient drilling system is a solution for the recovery of drilling fluid in offshore drilling, which can effectively solve the problems of pollution caused by directly discharging drilling fluid into the sea and the large hull and doubled operating costs caused by using risers to recover drilling fluid. In this technology, conventional risers are not used in offshore drilling, and the drill pipe is directly exposed to seawater. The subsea lift pump pumps the drilling fluid containing cuttings in the wellhead suction module back to the drilling ship through a return hose string.

[0003] As the return hose is the channel for the deep mud of the drilling fluid to return to the drilling ship and needs to be transported over a long distance, the hose needs to be connected, lowered, and recovered in multiple sections. Therefore, in order to reduce the labor intensity and improve the construction efficiency, it is an urgent problem for those skilled in the art to develop an auxiliary device for lowering, recovering, and connecting the hose with marine flange connections. Summary of the Invention

[0004] In view of this, the present invention provides an auxiliary device for lowering, recovering, and connecting a hose with marine flange connections, aiming to solve the above technical problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An auxiliary device for lowering, recovering, and connecting a hose with marine flange connections, comprising:

[0007] A base bracket; a lower guide wheel and a front guide wheel are rotatably connected to one side of the base bracket, the lower guide wheel and the front guide wheel are arranged vertically offset, and a guiding space for restricting and guiding the hose of the flange hose is formed;

[0008] A runner bracket, the runner bracket is rotatably connected to the base bracket, and a plurality of runner guide wheels are rotatably connected to the runner bracket, and the hose is placed on the runner guide wheels;

[0009] A slide plate bracket, the slide plate bracket is arranged on one side of the top of the base bracket, and the slide plate bracket is provided with a lower clamping plate and an upper clamping plate that can be opened and closed. When the lower clamping plate and the upper clamping plate are closed, a clamping opening for clamping the lower flange of the flange hose is formed.

[0010] Through the above technical solutions, the present invention realizes the stable guiding and clamping functions of the flange hose through the coordinated action of the base bracket, the runner bracket, and the slide plate bracket, effectively reducing the labor intensity, improving the construction efficiency of hose lowering and recovery, and reducing the operation risk at the same time.

[0011] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, the base bracket includes a base, with a lower guide shaft and a front guide shaft fixed to one side of the base. The lower guide wheel is rotatably connected to the lower guide shaft, and the front guide wheel is rotatably connected to the front guide shaft.

[0012] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, a runner shaft is fixed to the middle of the base, and the runner bracket at the center of the runner frame is rotatably connected to the runner shaft.

[0013] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, the runner frame is a Y-shaped frame body, and the lengths of the three branches of the Y-shaped frame body are equal, and the angles between adjacent branches are the same. A guide wheel shaft is fixed to the end of each branch, and the runner guide wheel is rotatably connected to the guide wheel shaft.

[0014] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, the slide plate bracket includes a slide plate frame that is horizontally slidably connected to the base bracket. The slide plate frame is fixedly connected to the base bracket through a slide plate frame fixing pin, and the lower clamping plate and the upper clamping plate are slidably connected to the slide plate frame.

[0015] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, guide shaft lower fixing blocks and guide shaft upper fixing blocks are fixed to both sides of the slide plate frame. A guide shaft is fixed between the guide shaft lower fixing block and the guide shaft upper fixing block. Clamping plate sliders are fixed to the back of the lower clamping plate and the upper clamping plate, and the clamping plate sliders are slidably connected to the guide shaft.

[0016] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, when the lower clamping plate and the upper clamping plate are closed, the lower clamping plate is fixedly limited to the slide plate frame through a lower clamping plate fixing pin, and the upper clamping plate is fixedly limited to the slide plate frame through an upper clamping plate fixing pin.

[0017] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, the clamping opening formed when the lower clamping plate and the upper clamping plate are closed, the runner guide wheels on the outer ring of the runner frame, and the guide space formed by the lower guide wheel and the front guide wheel are arranged obliquely from high to low.

[0018] Preferably, in the above-mentioned auxiliary device for lowering and retrieving and connecting a marine flange-connected hose, the lower flange is connected to the upper flange through flange connection bolts.

[0019] Preferably, in the above-mentioned auxiliary device for lowering and retrieving the connection of the offshore flange-connected hose, a flange seal is provided between the lower flange and the upper flange.

[0020] As can be seen from the above technical solutions, compared with the prior art, the present invention discloses an auxiliary device for lowering and retrieving the connection of an offshore flange-connected hose, which has the following beneficial effects:

[0021] 1. Improve construction efficiency: Through the coordinated action of the base bracket, the runner bracket and the skateboard bracket, the stable guiding and clamping functions of the flange hose are realized, effectively reducing the manual labor intensity, improving the construction efficiency of hose lowering and retrieving, and reducing the operation risk at the same time.

[0022] 2. Optimize the guiding function: The upper and lower misaligned arrangement of the lower guiding wheel and the front guiding wheel, as well as the design of multiple runner guiding wheels on the runner bracket, ensure the stability and accuracy of the hose during the guiding process, avoid the problems of hose deviation or jamming, and further improve the guiding accuracy.

[0023] 3. Enhance structural stability: The design of the Y-shaped runner bracket and the setting of the runner shaft make the device have good structural stability and symmetry, can evenly distribute the tension of the hose, ensure the stable placement and guiding of the hose on the runner guiding wheel, and enhance the adaptability and flexibility of the device.

[0024] 4. Improve clamping reliability: The design of the openable lower clamping plate and upper clamping plate on the skateboard bracket facilitates the clamping and releasing operations of the flange hose. The clamping plates are fixed and limited by fixing pins to ensure the stability and firmness of the clamping opening, prevent the loosening or falling off of the hose, and improve the safety and reliability of the device.

[0025] 5. Prolong service life: The inclined arrangement of the clamping opening, the runner guiding wheel and the guiding space conforms to the natural lowering and retrieving path of the hose, reduces the friction and resistance of the hose during operation, reduces the wear of the device, and thus prolongs the service life of the device.

[0026] 6. Enhance sealing performance: The use of flange connection bolts and flange seals ensures the firm connection and sealing performance between the lower flange and the upper flange, effectively preventing the leakage of drilling fluid from the flange connection under high-pressure environment, and improving the environmental protection and safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0028] Figure 1 The accompanying drawing is a schematic structural diagram of the auxiliary device for lowering and retrieving the connection of the offshore flange-connected hose provided by the present invention in the front direction;

[0029] Figure 2 The accompanying drawing is a schematic structural diagram of the auxiliary device for lowering and retrieving the connection of the offshore flange-connected hose provided by the present invention in the back direction;

[0030] Figure 3 The accompanying drawing is a schematic structural diagram of the main components of the auxiliary device for lowering and retrieving the connection of the offshore flange-connected hose provided by the present invention;

[0031] Figure 4 The accompanying drawing is a schematic diagram of the state of continuous lowering of the flange provided by the present invention.

[0032] Wherein:

[0033] 1 - Base bracket; 2 - Runner bracket; 3 - Slide plate bracket; 4 - Flange hose;

[0034] 101 - Base; 102 - Lower guide shaft; 103 - Lower guide wheel; 104 - Front guide shaft; 105 - Front guide wheel; 106 - Runner shaft; 107 - Fixed pin for slide plate frame;

[0035] 201 - Runner support; 202 - Runner guide wheel; 203 - Guide wheel shaft;

[0036] 301 - Slide plate frame; 302 - Lower clamping plate; 303 - Upper clamping plate; 304 - Fixed pin for upper clamping plate; 305 - Fixed pin for lower clamping plate; 306 - Lower fixed block of guide shaft; 307 - Clamping plate slider; 308 - Guide shaft; 309 - Upper fixed block of guide shaft;

[0037] 401 - Flange connection bolt; 402 - Upper flange; 403 - Flange seal; 404 - Lower flange; 405 - Hose. Specific embodiments

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] See the attached Figure 1 to the attached Figure 3 , the embodiments of the present invention disclose an auxiliary device for lowering and retrieving the connection of an offshore flange-connected hose, including:

[0040] Base support 1; A lower guide wheel 103 and a front guide wheel 105 are rotatably connected to one side of the base support 1. The lower guide wheel 103 and the front guide wheel 105 are arranged vertically offset, and a guiding space for restricting and guiding the hose 405 of the flange hose 4 is formed.

[0041] Runner frame 2, the runner frame 2 is rotatably connected to the base support 1, and a plurality of runner guide wheels 202 are rotatably connected to the runner frame 2. The hose 405 is placed on the runner guide wheels 202.

[0042] Skateboard support 3, the skateboard support 3 is arranged on one side of the top of the base support 1. The skateboard support 3 has an openable and closable lower clamping plate 302 and an upper clamping plate 303. When the lower clamping plate 302 and the upper clamping plate 303 are closed, a clamping opening for clamping the lower flange 404 of the flange hose 4 is formed.

[0043] To further optimize the above technical solution, the base support 1 includes a base 101. A lower guide shaft 102 and a front guide shaft 104 are fixed on one side of the base 101. The lower guide wheel 103 is rotatably connected to the lower guide shaft 102, and the front guide wheel 105 is rotatably connected to the front guide shaft 104. Through the design of the lower guide shaft 102 and the front guide shaft 104, it is ensured that the lower guide wheel 103 and the front guide wheel 105 can rotate stably, further optimizing the guiding function of the hose 405, avoiding the hose 405 from shifting or jamming during the guiding process, and improving the guiding accuracy.

[0044] To further optimize the above technical solution, a runner shaft 106 is fixed in the middle of the base 101. The runner support 201 at the center of the runner frame 2 is rotatably connected to the runner shaft 106. The setting of the runner shaft 106 enables the runner frame 2 to rotate flexibly, enhancing the adaptability and flexibility of the device, being able to better cooperate with the lowering and retracting actions of the hose 405, and improving the stability and reliability of the device.

[0045] To further optimize the above technical solution, the runner frame 2 is a Y-shaped frame body, and the lengths of the three branches of the Y-shaped frame body are equal, and the angles between adjacent branches are the same. A guide wheel shaft 203 is fixed at the end of each branch, and the runner guide wheels 202 are rotatably connected to the guide wheel shaft 203. The Y-shaped frame body design gives the runner frame 2 good structural stability and symmetry. The three branches have equal lengths and the same angles, which can evenly distribute the tension of the hose 405, ensuring the stable placement and guiding of the hose 405 on the runner guide wheels 202, and further improving the guiding accuracy and reliability.

[0046] To further optimize the above technical solution, the skateboard bracket 3 includes a skateboard frame 301 that is horizontally slidably connected to the base bracket 1. The skateboard frame 301 is fixedly connected to the base bracket 1 through a skateboard frame fixing pin 107. The lower clamping plate 302 and the upper clamping plate 303 are slidably connected to the skateboard frame 301. The horizontal sliding connection between the skateboard bracket 3 and the base bracket 1 and the fixation of the skateboard frame 301 through the fixing pin improve the flexibility of position adjustment of the skateboard bracket 3. The lower clamping plate 302 and the upper clamping plate 303 are slidably connected to the skateboard frame 301, facilitating the opening and closing operations of the clamping plates and improving the clamping and releasing efficiency of the flange hose 4.

[0047] To further optimize the above technical solution, guide shaft lower fixing blocks 306 and guide shaft upper fixing blocks 309 are fixedly arranged on both sides of the skateboard frame 301. A guide shaft 308 is fixed between the guide shaft lower fixing block 306 and the guide shaft upper fixing block 309. Clamping plate sliders 307 are fixedly arranged on the backs of the lower clamping plate 302 and the upper clamping plate 303. The clamping plate sliders 307 are slidably connected to the guide shaft 308. The design of the guide shaft 308 provides a stable sliding track for the clamping plate sliders 307, making the opening and closing actions of the lower clamping plate 302 and the upper clamping plate 303 smoother and more accurate, further improving the reliability of clamping and releasing the flange hose 4 and extending the service life of the device at the same time.

[0048] To further optimize the above technical solution, when the lower clamping plate 302 and the upper clamping plate 303 are closed, the lower clamping plate 302 is fixedly limited to the skateboard frame 301 through a lower clamping plate fixing pin 305, and the upper clamping plate 303 is fixedly limited to the skateboard frame 301 through an upper clamping plate fixing pin 304. Fixing and limiting the lower clamping plate 302 and the upper clamping plate 303 through the fixing pins ensures the stability and firmness of the clamping opening, prevents the loosening or falling off of the flange hose 4, and improves the safety and reliability of the device.

[0049] To further optimize the above technical solution, the clamping opening formed when the lower clamping plate 302 and the upper clamping plate 303 are closed, the runner guide wheels 202 on the outer ring of the runner frame 2, and the guiding space formed by the lower guide wheel 103 and the front guide wheel 105 are arranged in an inclined manner from high to low. The inclined arrangement of the clamping opening, the runner guide wheels 202, and the guiding space conforms to the natural lowering and recovery path of the hose 405, reduces the friction and resistance during the operation of the hose 405, improves the conveying efficiency, and reduces the wear of the device at the same time.

[0050] To further optimize the above technical solution, the lower flange 404 is connected to the upper flange 402 through flange connection bolts 401. The use of the flange connection bolts 401 realizes the firm connection between the lower flange 404 and the upper flange 402, ensures the sealing performance and stability of the hose 405 under high-pressure environments, prevents the leakage of drilling fluid, and improves the safety and reliability of the device.

[0051] To further optimize the above technical solution, a flange seal 403 is provided between the lower flange 404 and the upper flange 402. The provision of the flange seal 403 further enhances the sealing performance at the flange connection, effectively preventing the leakage of drilling fluid from the flange connection under high pressure, improving the environmental protection and safety of the device, and at the same time extending the service life of the flange.

[0052] See the appendix Figure 4 , after the lower flange 404 and the upper flange 402 are fixed by the flange connection bolts 401, the lower clamping plate fixing pin 305 and the upper clamping plate fixing pin 304 are respectively removed. The lower clamping plate 302 slides down and opens, and the upper clamping plate 303 slides up and opens. The lower flange 404 drives the runner support 201 to rotate around the runner shaft 106 through the runner guide wheel 202. The hose 405 is limited by the lower guide wheel 103 and the front guide wheel 105, enabling the operation of lowering and retrieving the offshore flange-connected hose. Through a series of optimized designs, the offshore flange-connected hose lowering and retrieving connection auxiliary device of the present invention not only improves the construction efficiency and operation safety, but also enhances the stability and reliability of the device, while extending the service life, providing strong support for the efficient operation of the deep-sea dual-gradient drilling system.

[0053] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same and similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0054] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary device for lowering and retrieving the connection of a marine flange-connected hose, characterized in that, Comprising: A base bracket (1); a lower guide wheel (103) and a front guide wheel (105) are rotatably connected to one side of the base bracket (1), the lower guide wheel (103) and the front guide wheel (105) are arranged vertically offset, and a guiding space for restricting and guiding the hose (405) of the flange hose (4) is formed. A runner bracket (2), the runner bracket (2) is rotatably connected to the base bracket (1), and a plurality of runner guide wheels (202) are rotatably connected to the runner bracket (2), and the hose (405) is placed on the runner guide wheels (202). A slide plate bracket (3), the slide plate bracket (3) is arranged on one side of the top of the base bracket (1), and the slide plate bracket (3) is provided with a lower clamping plate (302) and an upper clamping plate (303) that can be opened and closed. When the lower clamping plate (302) and the upper clamping plate (303) are closed, a clamping opening for clamping the lower flange (404) of the flange hose (4) is formed.

2. The auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 1, characterized in that, The base bracket (1) includes a base (101), a lower guide shaft (102) and a front guide shaft (104) are fixed to one side of the base (101), the lower guide wheel (103) is rotatably connected to the lower guide shaft (102), and the front guide wheel (105) is rotatably connected to the front guide shaft (104).

3. An auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 2, characterized in that, A runner shaft (106) is fixed to the middle of the base (101), and a runner bracket (201) at the center of the runner bracket (2) is rotatably connected to the runner shaft (106).

4. An auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 1, characterized in that, The runner bracket (2) is a Y-shaped frame body, and the lengths of the three branches of the Y-shaped frame body are equal, and the angles between adjacent branches are the same. A guide wheel shaft (203) is fixed to the end of each branch, and the runner guide wheel (202) is rotatably connected to the guide wheel shaft (203).

5. The auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 1, characterized in that, The slide plate bracket (3) includes a slide plate frame (301) that is horizontally slidably connected to the base bracket (1), the slide plate frame (301) is fixedly connected to the base bracket (1) through a slide plate frame fixing pin (107), and the lower clamping plate (302) and the upper clamping plate (303) are slidably connected to the slide plate frame (301).

6. The auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 5, characterized in that, Guide shaft lower fixing blocks (306) and guide shaft upper fixing blocks (309) are fixed to both sides of the slide plate frame (301), a guide shaft (308) is fixed between the guide shaft lower fixing block (306) and the guide shaft upper fixing block (309), and clamping plate sliders (307) are fixed to the backs of the lower clamping plate (302) and the upper clamping plate (303), and the clamping plate sliders (307) are slidably connected to the guide shaft (308).

7. An auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 6, characterized in that, When the lower clamping plate (302) and the upper clamping plate (303) are closed, the lower clamping plate (302) is fixedly limited to the slide plate frame (301) through a lower clamping plate fixing pin (305), and the upper clamping plate (303) is fixedly limited to the slide plate frame (301) through an upper clamping plate fixing pin (304).

8. An auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 1, characterized in that, The clamping opening formed when the lower clamping plate (302) and the upper clamping plate (303) are closed, the runner guide wheels (202) on the outer ring of the runner frame (2), and the guiding space formed by the lower guide wheel (103) and the front guide wheel (105) are arranged obliquely from high to low.

9. An auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 1, characterized in that, The lower flange (404) is connected to the upper flange (402) by flange connection bolts (401).

10. The auxiliary device for lowering and retrieving the connection of a marine flange-connected hose according to claim 9, wherein, A flange seal (403) is provided between the lower flange (404) and the upper flange (402).

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