Oil spill detection equipment for offshore oil exploitation platform

Abstract

The invention discloses oil spill detection equipment for an offshore oil exploitation platform, and relates to the technical field of oil spill detection. The oil spilling detection equipment for the offshore oil exploitation platform comprises an oil conveying pipe with a plurality of positioning discs installed on the side face, a plurality of liquid taking holes formed in the side face of an outer pipe at equal intervals, a plurality of liquid exploitation columns placed in the outer pipe, partition plates dividing an inner cavity of the outer pipe into a plurality of liquid exploitation chambers, and a movable sealing plate arranged in each liquid exploitation chamber. A communicating hole is formed in the movable sealing plate in a penetrating mode, one side of the movable sealing plate is connected with the side wall of the second notch through a spring, and the movable sealing plate communicates with an air bag fixing end through an air bag telescopic end. According to the oil spill detection equipment for the offshore oil exploitation platform, the multiple outer pipes are arranged on the outer side of the oil conveying pipe, timing sampling is conducted, liquid in the outer wall environment of the oil conveying pipe is obtained in a segmented mode, the oil leakage position is accurately locked, the oil body does not need to float out of the sea surface, the oil leakage phenomenon can be detected in the early stage of oil spill, the oil body is close to the oil body leakage position, and the timeliness and accuracy of the detection result are improved.

Description

Technical Field

[0001] This invention relates to the field of oil spill detection technology, specifically to an oil spill detection device for offshore oil extraction platforms. Background Technology

[0002] Oil spill detection equipment for offshore oil platforms is mainly divided into two categories: contact and non-contact. Contact detection equipment comes into direct contact with the oil film and identifies the type of oil through physical or chemical properties, thereby enabling the detection, location, and monitoring of oil spills.

[0003] Referring to Chinese Patent Publication No. CN214373575U, an intelligent detection device for offshore oil spills belongs to the field of offshore oil extraction technology. It includes an extraction platform positioned above the sea surface and several detection boxes fixedly installed on the side of the platform. Each detection box has a partition inside, dividing it into a detection chamber and an oil spill recovery chamber. An overflow port is formed between the upper part of the partition and the top wall of the detection box. A detection component corresponding to the detection chamber is located on the top of the inner side of the detection box. A control box is located on the upper part of the detection box, above the detection component. The control box contains a processor and a power supply electrically connected to the detection component. This invention has the advantages of ease of use and good detection effect. By drawing seawater into the detection box, a good detection environment is provided for the detection component, thereby improving the feasibility of detecting oil spills in seawater.

[0004] In the early stages of oil extraction, oil spills are highly likely to occur. However, contact-type oil spill sensors must be in direct contact with the oil film and can only monitor an area within a radius of 1-2 meters. If the oil spill leaks from a distant end of the pipeline and spreads with ocean currents, it may drift out of the monitoring range within hours, resulting in "missed detection." Initially, when the leak is small and spreads in the seawater, the oil film thickness on the sea surface may be less than 0.1 mm. Contact sensors may not be able to identify this due to insufficient signal strength, and the leak can only be detected after the amount of oil in the area increases. If the oil spill occurs underwater, such as when the pipeline ruptures, the oil film needs to rise to the surface to be detected by contact equipment. This process may take several hours, during which time the oil spill has already spread underwater, increasing the difficulty of cleanup, delaying the detection time, expanding the damage, and increasing subsequent cleanup costs. Even after an oil spill is detected, the leak area cannot be accurately located. Workers need to dive down to find the specific location, making timely repairs impossible. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an oil spill detection device for offshore oil exploration platforms. By installing numerous external pipes on the outside of the oil pipeline, sampling is performed at regular intervals to obtain liquid samples from the environment surrounding the outer wall of the oil pipeline in sections, accurately locating the oil leak location. This allows for the detection of oil leaks in their early stages, without waiting for the oil to surface, thus improving the timeliness and accuracy of detection results.

[0006] Technical Solution: To achieve the above objectives, the present invention provides the following technical solution: an oil spill detection device for an offshore oil exploration platform, comprising: an oil delivery pipe with several positioning discs mounted on its side; several clamping holes are formed through the upper surface of the positioning discs; each clamping hole is connected to an outer pipe; several liquid sampling holes are equidistantly formed on the side of the outer pipe; a first groove and a second groove are formed on the top wall of each outer pipe, the second groove being connected to the liquid sampling holes; several liquid sampling columns are placed inside the outer pipe; and a series of liquid sampling columns are positioned between adjacent liquid sampling columns. The outer tube has a partition that divides the inner cavity into several liquid collection chambers. Each liquid collection chamber is connected to a liquid extraction port. Each liquid collection chamber is equipped with a sliding sealing plate. A through hole is opened on one side of the sliding sealing plate. The sliding sealing plate is slidably connected to the inner wall of the second slot. One side of the sliding sealing plate is connected to the side wall of the second slot by a spring. The sliding sealing plate is connected to a fixed end of an airbag through an airbag telescopic end. Adjacent fixed ends of airbags are connected through air pipes. The top fixed end of the airbag is connected to an air inlet pipe. The sliding sealing plate is pushed by pneumatic action to control the opening and closing of the liquid extraction port.

[0007] Preferably, when the oil pipeline is set horizontally, a plurality of the liquid extraction holes are equidistantly distributed in the horizontal direction; when the oil pipeline is set vertically, the distance between adjacent liquid extraction holes gradually increases in the vertical direction, and the distance between adjacent liquid extraction holes at the top of the oil pipeline is less than the distance between adjacent liquid extraction holes at the bottom of the oil pipeline.

[0008] Preferably, the width of the first slot is greater than the width of the second slot. The fixed end and the telescopic end of the airbag form an airbag. The airbag is placed in the first slot. One side of the telescopic end of the airbag is connected to the transfer sealing plate through a connecting plate. The width of the first slot is the same as the width of the connecting plate. An air inlet is provided through the top of the fixed end of the airbag. The bottom of one fixed end of the airbag is connected to the top of the adjacent fixed end of the airbag through an air pipe. The top of the air pipe is connected to a threaded connecting pipe. The side of the threaded connecting pipe is fixedly connected to the inner wall of the channel. The threaded connecting pipe is threadedly connected to one end of the air inlet pipe. A handle is provided at the top of the outer pipe. The handle is connected to the top of the liquid collection column.

[0009] Preferably, the connecting hole is adapted to the liquid collection hole. When the connecting hole and the liquid collection hole are connected, seawater enters the liquid collection chamber through the connecting hole. The connecting plate abuts against the side of the first slot near the spring. When the gas in the airbag is drawn away, the spring extension end is compressed, and the sliding sealing plate seals the liquid collection hole.

[0010] Preferably, the outer pipe is an arc-shaped cross-section pipe. In the projection view of one end of the outer pipe, the outer edge of the projection view is circular, and the inner edge of the projection view is a crescent shape composed of a superior arc and straight lines at both ends of the superior arc. The first slot and the second slot are located on one side of the straight lines at both ends of the superior arc. The material of the liquid collection column is either modified polyurethane sponge or cellulose-based elastic aerogel.

[0011] Preferably, after the outer tube is extracted after sampling, all the liquid collection columns and baffles inside the outer tube form a liquid collection strip. An insertion hole is provided between the handle and the liquid collection column. A fixing plate is inserted into the insertion hole. A screw is connected to the fixing plate through a horizontal plate. The screw is threadedly connected to the screw rod through a nut. One end of the screw rod is connected to the rotating end of a stepper motor. The screw is used to drive the liquid collection strip and extract the liquid collection strip from the outer tube.

[0012] Preferably, a liquid guiding detection device is provided on one side of the stepper motor. The liquid guiding detection device includes: a liquid guiding plate, which is located directly above the lead screw. Each liquid guiding plate has a side plate connected to both ends. A liquid outlet is provided through the bottom of the liquid guiding plate. An inclined guide plate is connected to the bottom of the liquid outlet. A liquid detection box is provided below the bottom end of the inclined guide plate. A contact oil film sensor is installed in the liquid detection box.

[0013] Preferably, each of the liquid collection columns is adapted to a liquid guiding detection device, and several liquid guiding detection devices are distributed sequentially along the transverse axis of the lead screw. The liquid guiding detection device is used to guide the flow of liquid pressed out by one of the liquid collection columns and to detect oily substances in the liquid.

[0014] Preferably, a pressure plate is provided directly above each of the liquid guiding plates, and each pressure plate is connected to a sliding plate via a sliding rod. The top of the sliding plate is connected to the telescopic end of the hydraulic cylinder. The pressure plate is an elastic plate, the liquid guiding plate is an arc plate, the cross-section of one end of the liquid guiding plate is a semi-circular ring, and the side of the liquid outlet is located on the same plane as the longitudinal axis of the liquid guiding plate.

[0015] Preferably, at intervals of 0.5-4 hours, the liquid sampling hole of one of the outer tubes is opened to collect the liquid around the oil pipeline, and the two adjacent outer tubes for liquid sampling are located on both sides of the axis of the oil pipeline.

[0016] Beneficial Effects: This invention provides an oil spill detection device for offshore oil exploration platforms. Compared with existing technologies, it has the following beneficial effects: 1. The entire device has a simple structure. By setting up a large number of outer pipes on the outside of the oil pipeline, sampling is performed at regular intervals to obtain liquid from the environment outside the oil pipeline in sections. After removing the outer pipes and separating them from the internal sampling column, the presence and quantity of oil in the sampling column are detected, thus accurately locating the oil spill location. Furthermore, the sampling point is located below the sea surface, eliminating the need to wait for the oil to rise to the surface. Oil spills can be detected in their early stages, allowing for timely remediation and cleanup. It also allows for obtaining a higher concentration of oil at the leak site, avoiding excessively diluted oil, facilitating timely and accurate detection of oil spills.

[0017] 2. As the gas in the airbag increases, the telescopic end of the airbag expands and unfolds. The telescopic end of the airbag is fixedly connected to the connecting plate, which is slidably connected to the inner wall of the first slot. The connecting plate can only move laterally along the first slot. The telescopic end of the airbag, carrying the connecting plate and the sliding sealing plate in sequence, moves away from the fixed end of the airbag, compressing the spring. The liquid intake hole connects with the connecting hole, expanding the open area of ​​the liquid intake hole. When the connecting plate abuts against the inner wall of the first slot, the liquid intake hole is fully open. The first slot not only houses the airbag but also guides and restricts the movement of the connecting plate, ensuring that the connecting hole and the liquid intake hole are compatible.

[0018] 3. The partition separates the adjacent collection chambers. The depth of the collection chamber corresponds to the depth of the oil pipeline. By obtaining liquid samples from the oil pipeline area at different depths, it is easier to determine the more precise location of the leak after subsequent oil body testing.

[0019] 4. The sampling column has a strong absorption capacity for oil and water, completing the storage of oil and water. This material not only locks in the oil to prevent secondary leakage, but also visually reflects the leakage amount through its own expansion or saturation state, making it easy to judge the degree of leakage. The outer pipe itself can form a "protective shell" for the oil pipeline, reducing direct damage to the pipeline from the external environment, such as soil corrosion and water flow impact, and indirectly reducing the probability of leakage. Attached Figure Description

[0020] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present application and, together with the specification, further serve to explain the principles of the present application and enable those skilled in the art to implement and use the present application.

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is a structural diagram of the positioning plate and outer tube.

[0024] Figure 3 This is a diagram showing the separation of the oil pipeline from the positioning plate and the outer pipe.

[0025] Figure 4 This is a schematic diagram of the positioning disc.

[0026] Figure 5 This is a schematic diagram of the structure of the part where the top of the outer tube is located.

[0027] Figure 6 for Figure 5 A diagram showing the separation of the inner and outer tubes and the internal structure of the outer tube.

[0028] Figure 7 This is a structural diagram of the outer pipe, the jacking pipe, the first slot, and the second slot.

[0029] Figure 8 for Figure 6 A schematic diagram of the structure of the liquid collection column, diaphragm, and gas tube.

[0030] Figure 9 This is a structural diagram of the airbag fixed end, airbag telescopic end, repositioning plate, spring, and threaded connecting tube.

[0031] Figure 10 This is a diagram showing the separation of the connecting plate from the airbag telescopic end and the sliding sealing plate.

[0032] Figure 11 This is a structural diagram of the hydraulic cylinder, the moving plate, the lead screw, and the liquid detection box.

[0033] Figure 12 for Figure 11 A schematic diagram of the structure at one end where the stepper motor is located.

[0034] Figure 13 This is a structural diagram of a stepper motor, lead drum, insert plate, insertion hole, and handle.

[0035] Figure 14 This is a schematic diagram of the structure of the side plate, liquid guide plate, inclined flow guide plate, liquid detection box, and contact oil film sensor.

[0036] Figure 15 This is a schematic diagram of the structure of the side plate, liquid guide plate, inclined guide plate, and liquid outlet.

[0037] The reference numerals in the diagram are as follows: 1. Oil pipeline; 21. Positioning plate; 22. Clamping hole; 23. End plate; 24. Threaded rod; 31. Jacking pipe; 32. Channel; 33. Outer pipe; 34. Liquid intake hole; 35. First slot; 36. Second slot; 37. Threaded connecting pipe; 38. Air inlet; 39. Connecting hole; 41. Liquid collection column; 42. Handle; 43. Partition plate; 44. Gas pipe; 45. Connecting plate; 46. 47. Airbag fixed end; 48. Airbag telescopic end; 49. Transfer sealing plate; 50. Spring; 51. Hydraulic cylinder; 52. Transfer plate; 53. Transfer rod; 54. Pressure plate; 61. Stepper motor; 62. Lead screw; 63. Lead drum; 64. Horizontal plate; 65. Insertion plate; 66. Insertion hole; 71. Side plate; 72. Liquid guide plate; 73. Inclined guide plate; 74. Liquid detection box; 75. Contact oil film sensor; 76. Liquid outlet.

[0038] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, 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.

[0040] like Figure 1 - Figure 15As shown, an embodiment of the present invention provides an oil spill detection device for an offshore oil exploration platform, comprising: an oil pipe 1 with several positioning discs 21 mounted on its side; several clamping holes 22 are formed through the upper surface of the positioning discs 21; each clamping hole 22 is connected to an outer pipe 33; several liquid sampling holes 34 are equidistantly formed on the side of the outer pipe 33; a first slot 35 and a second slot 36 are formed on the top wall of each outer pipe 33, the second slot 36 being connected to the liquid sampling holes 34; several liquid sampling columns 41 are placed inside the outer pipe 33; a partition 43 is provided between adjacent liquid sampling columns 41, the partition 43 holding the outer pipe... The inner cavity of 33 is divided into several liquid collection chambers, each of which is connected to a liquid collection hole 34. Each liquid collection chamber is equipped with a sliding sealing plate 48. A connecting hole 39 is opened through one side of the sliding sealing plate 48. The sliding sealing plate 48 is slidably connected to the inner wall of the second slot 36. One side of the sliding sealing plate 48 is connected to the side wall of the second slot 36 through a spring 49. The sliding sealing plate 48 is connected to the airbag fixing end 46 through the airbag telescopic end 47. Adjacent airbag fixing ends 46 are connected through air pipes 44. The top airbag fixing end 46 is connected to the air inlet pipe 44. The sliding sealing plate 48 is pushed by pneumatic action to control the opening and closing of the liquid collection hole 34.

[0041] When the oil pipeline 1 is set horizontally, several liquid extraction holes 34 are distributed at equal intervals along the horizontal direction. When the oil pipeline 1 is set vertically, the distance between adjacent liquid extraction holes 34 gradually increases along the vertical direction. The distance between adjacent liquid extraction holes 34 at the top of the oil pipeline 1 is less than the distance between adjacent liquid extraction holes 34 at the bottom of the oil pipeline 1.

[0042] The width of the first slot 35 is greater than the width of the second slot 36. The airbag fixed end 46 and the airbag telescopic end 47 form an airbag. The airbag is placed in the first slot 35. One side of the airbag telescopic end 47 is connected to the transfer sealing plate 48 through the connecting plate 45. The width of the first slot 35 is the same as the width of the connecting plate 45. An air inlet 38 is provided through the top of the airbag fixed end 46. The bottom of one airbag fixed end 46 is connected to the top of the adjacent airbag fixed end 46 through the air pipe 44. The top of the air pipe 44 is connected to the threaded connecting pipe 37. The side of the threaded connecting pipe 37 is fixedly connected to the inner wall of the channel 32. The threaded connecting pipe 37 is threadedly connected to one end of the air inlet pipe 44. A handle 42 is provided at the top of the outer pipe 33. The handle 42 is connected to the top of the liquid collection column 41.

[0043] The connecting hole 39 is adapted to the liquid collection hole 34. When the connecting hole 39 and the liquid collection hole 34 are connected, seawater enters the liquid collection chamber through the connecting hole 39. The connecting plate 45 abuts against the side of the first slot 35 near the spring 49. When the gas in the air bag is drawn out, the extension end of the spring 49 is compressed, and the sealing plate 48 seals the liquid collection hole 34.

[0044] The outer pipe 33 is an arc-shaped cross-section pipe. In the projection view of one end of the outer pipe 33, the outer edge of the projection view is circular, and the inner edge of the projection view is a crescent shape composed of a superior arc and straight lines at both ends of the superior arc. The first slot 35 and the second slot 36 are located on one side of the straight lines at both ends of the superior arc. The material of the liquid collection column 41 is either modified polyurethane sponge or cellulose-based elastic aerogel.

[0045] After the outer tube 33 is extracted, all the sampling columns 41 and partitions 43 inside the outer tube 33 form a sampling strip. A hole 66 is provided between the handle 42 and the sampling column 41. A fixing plate 65 is inserted into the hole 66. The fixing plate 65 is connected to a screw 63 through a horizontal plate 64. The screw 63 is threadedly connected to the screw rod 62 through a nut. One end of the screw rod 62 is connected to the rotating end of the stepper motor 61. The screw 63 is used to drive the sampling strip and extract the sampling strip from the outer tube 33.

[0046] A liquid guiding detection device is provided on one side of the stepper motor 61. The liquid guiding detection device includes a liquid guiding plate 72, which is located directly above the lead screw 62. Each liquid guiding plate 72 has a side plate 71 connected to both ends. A liquid outlet 76 is provided through the bottom of the liquid guiding plate 72. An inclined guide plate 73 is connected to the bottom of the liquid outlet 76. A liquid detection box 74 is provided below the bottom of the inclined guide plate 73. A contact oil film sensor 75 is installed in the liquid detection box 74.

[0047] The sensor's detection probe is typically a metal electrode, a fiber optic probe, or a coating structure made of oleophilic material. When an oil film forms and covers the probe surface, the probe comes into direct contact with the oil film, triggering the detection process.

[0048] The dielectric constant of oil (e.g., crude oil, approximately 2.0-3.0) is much lower than that of water (approximately 80) and air (approximately 1.0). When a probe comes into contact with an oil film, the capacitance between the probes changes significantly due to the change in the medium. The sensor determines the presence of an oil film by monitoring this capacitance change.

[0049] During detection, the oleophilic probe surface preferentially adsorbs oil molecules, forming a continuous oil film on the probe surface, while water will form droplets and roll off due to surface tension. This difference in physical state can be captured by optical or mechanical sensors. The change in physical properties is converted into an electrical signal by the sensing elements inside the sensor (such as capacitive sensors, resistive sensors, and photoelectric converters). After amplification, filtering, and other processing, environmental interference is removed to obtain a stable detection signal.

[0050] When the processed signal reaches the preset threshold, confirming the detection of an oil film, the sensor will output an alarm signal, which may take the form of: electrical signals (such as switch signals or 4-20mA analog signals) to trigger the control system (such as closing valves or starting the recovery device); audible and visual alarms to directly alert on-site personnel; and data uploads to send the detection results to the monitoring platform for remote early warning.

[0051] Each liquid collection column 41 is matched with a liquid guiding detection device. Several liquid guiding detection devices are distributed sequentially along the transverse axis of the screw 62. The liquid guiding detection device is used to guide the flow of liquid pressed out by a liquid collection column 41 and detect oily substances in the liquid.

[0052] A pressure plate 54 is provided directly above each liquid guide plate 72. Each pressure plate 54 is connected to the sliding plate 52 via a sliding rod 53. The top of the sliding plate 52 is connected to the telescopic end of the hydraulic cylinder 51. The pressure plate 54 is an elastic plate, and the liquid guide plate 72 is an arc plate. The cross-section of one end of the liquid guide plate 72 is a semi-circular ring. The side of the liquid outlet 76 is located on the same plane as the longitudinal axis of the liquid guide plate 72.

[0053] The arc-shaped liquid guide plate 72 is inherently beneficial for guiding fluid to flow smoothly along the curved surface, reducing turbulence and energy loss caused by turning, and making the liquid flow more smoothly during transportation. The semi-circular annular cross-section at one end can better match the outlet of a circular pipe or container, making the transition of liquid into the liquid guide plate 72 from the source more natural, avoiding dead corners or eddies at the connection, and reducing the possibility of liquid stagnation and residue.

[0054] The fact that one side of the liquid outlet 76 is on the same plane as the longitudinal axis of the guide plate 72 further enhances the directional delivery capability of the fluid. The longitudinal axis is equivalent to the "main path" of the fluid flow. The coplanarity of the liquid outlet 76 with this axis allows the liquid guided by the guide plate 72 to exit from the outlet 76 in a more concentrated and stable manner, reducing divergence or deflection at the outlet. This design improves the accuracy of liquid delivery. For example, when it is necessary to accurately direct liquid into specific equipment or areas, it can effectively prevent liquid splashing or deviation from the target. It also reduces the impact and noise caused by unstable liquid delivery direction, extending the service life of related equipment.

[0055] Every 0.5-4 hours, open the liquid sampling hole 34 of one of the outer tubes 33 to collect the liquid around the oil pipeline 1. The two adjacent outer tubes 33 for liquid sampling are located on both sides of the axis of the oil pipeline 1.

[0056] In use, each outer tube 33 is passed through the clamping holes 22 on all the positioning discs 21 in sequence. The outer tubes 33 are all elastic tubes. The contact points between the outer tubes 33 and the clamping holes 22 are squeezed, making the connection between the outer tubes 33 and the positioning discs 21 more stable and reducing the possibility of the outer tubes 33 falling off the positioning discs 21. Since the outer tubes 33 are relatively long, in order to distribute the outer tubes 33 as far as possible along the axial direction of the oil pipeline 1 and to avoid the outer tubes 33 from protruding outward and moving away from the oil pipeline 1, multiple positioning discs 21 are provided to fix the outer tubes 33 in sections, so that the outer tubes 33 are kept as straight as possible. The outer tubes 33 are located not far outside the oil pipeline 1, which makes it easy to obtain the oil leaking from the oil pipeline 1.

[0057] The positioning plate 21 can be fixed to the oil pipeline 1 in advance, or it can be fixed to the oil pipeline 1 after all the outer pipes 33 have been installed.

[0058] In the early stages of oil extraction, oil spills are frequent, necessitating a higher frequency of inspections. At this stage, inspections can be conducted every 0.5 hours. Once extraction stabilizes and leaks become less frequent or nonexistent, the inspection interval can be appropriately extended, but generally should not exceed four hours.

[0059] During testing, the fan is activated, and air enters all the fixed ends 46 and telescopic ends of the airbags through the air pipe 44. The gas level in the airbags increases, causing the telescopic ends to expand and unfold. The telescopic ends of the airbags are fixedly connected to the connecting plate 45, which is slidably connected to the inner wall of the first slot 35. The connecting plate 45 can only move laterally along the first slot 35. The telescopic ends of the airbags, along with the connecting plate 45 and the sliding sealing plate 48, move in sequence away from the fixed ends of the airbags, compressing the spring 49. The liquid extraction hole 34 connects to the connecting hole 39, expanding the open area of ​​the liquid extraction hole 34. When the connecting plate 45 abuts against the inner wall of the first slot 35, the liquid extraction hole 34 is fully open. The first slot 35 not only houses the airbags but also guides and restricts the movement of the connecting plate 45, ensuring that the connecting hole 39 and the liquid extraction hole 34 are properly matched. Since the outer pipe 33 is located around the oil pipeline 1, the pressure inside the liquid collection chamber is lower than the pressure outside the liquid collection chamber. Liquid near the oil pipeline 1 flows into the collection chamber through the liquid sampling hole 34 and the connecting hole 39. If a minor leak occurs in the oil pipeline 1, the oil will first seep to the outside of the pipeline. The outer pipe 33 is set close to the oil pipeline 1, and the liquid sampling hole 34 on its surface can act like an "oil catcher," allowing the leaked oil to enter the inside of the collection pipe through the pores, preventing the oil from spreading randomly outside the pipeline.

[0060] The partition 43 separates the adjacent collection chambers. The depth of the collection chamber corresponds to the depth of the oil pipeline 1. By obtaining liquid samples from the area where the oil pipeline 1 is located at different depths, it is easier to determine the more accurate location of the leak after subsequent oil body detection.

[0061] The sampling column 41 is made of modified polyurethane sponge or cellulose-based elastic aerogel, primarily modified polyurethane sponge, which is low-cost and can be used in large quantities. The sampling column 41 has a strong absorption capacity for oil and water, effectively storing them. This material not only locks in the oil, preventing secondary leakage, but also visually reflects the leakage amount through its own expansion or saturation state, facilitating the assessment of the leakage extent. The outer pipe 33 itself forms a "protective shell" for the oil pipeline 1, reducing direct damage to the pipeline from external environmental factors such as soil corrosion and water flow impact, indirectly lowering the probability of leakage.

[0062] The sampling time is generally kept between 10 and 30 seconds. The fan is turned off, the gas in the airbag is extracted, the air pressure in the airbag decreases, the telescopic end of the airbag retracts towards the fixed end of the airbag, the connecting plate 45 no longer abuts against the inner wall of the first slot 35, the spring 49 returns to its original state, the moving sealing plate 48 moves towards the fixed end of the airbag, the connecting hole 39 moves away from the liquid collection hole 34, the moving sealing plate 48 seals the liquid collection hole 34, and the collection chamber is isolated from the outside of the tube.

[0063] The jacking pipe 31 is clamped by a clamping device or a robotic arm and pulled out of the clamping hole 22. The pulled-out outer pipe 33 is placed horizontally and its two ends are fixed. The insertion plate 65 is inserted into the insertion hole 66, and the stepper motor 61 is started. The lead screw 62 moves the lead drum 63, the insertion plate 65, the handle 42, and the sampling strip horizontally in sequence. The outer pipe 33 remains stationary, and the outer pipe 33 slides relative to the sampling strip. The pulled-out sampling strip is placed horizontally on the guide plate 72, and each sampling column 41 is fitted with a guide plate 72.

[0064] Hydraulic cylinder 51 is activated. The telescopic end of hydraulic cylinder 51 moves vertically along with moving plate 52, moving rod 53, and pressure plate 54. Pressure plate 54 approaches and squeezes liquid collection column 41, causing liquid collection column 41 to be squeezed downwards and pressed against curved guide plate 72. A large amount of liquid stored in liquid collection column 41 is squeezed out. Guide plate 72 is an arc plate with a semi-circular cross-section at one end. The squeezed liquid moves along the arc surface to the bottom of guide plate 72, preventing liquid residue from remaining at the edges of guide plate 72. The squeezed liquid flows from outlet 76 and inclined guide plate 73 into detection box 74, where the liquid is detected by contact oil film sensor 75.

[0065] After the inspection, if oil spill is detected, the location of the sampling strip is determined by the position of the sampling box 74, the depth of the leak is determined, and the more precise location of the leak in the oil pipeline 1 is determined.

[0066] The entire device has a simple structure. By installing numerous external tubes 33 on the outside of the oil pipeline 1, sampling is performed periodically to collect liquid samples from the environment surrounding the outer wall of the oil pipeline 1. After removing the external tubes 33 and separating them from the internal sampling column 41, the presence and quantity of oil in the sampling column 41 are detected, thus accurately pinpointing the location of the oil leak. Furthermore, the sampling point is located underwater, eliminating the need to wait for the oil to surface, allowing for early detection of oil spills and timely remediation and cleanup. It also allows for obtaining a higher concentration of oil at the leak site, avoiding excessively diluted oil, facilitating timely and accurate detection of oil spills.

[0067] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details have been described in detail in the above preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0068] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An oil spill detection device for offshore oil exploration platforms, characterized in that, include: An oil pipe (1) with several positioning discs (21) installed on its side has several clamping holes (22) through its upper surface. Each clamping hole (22) is connected to an outer pipe (33). Several liquid collection holes (34) are equidistantly opened on the side of the outer pipe (33). Each outer pipe (33) has a first groove (35) and a second groove (36) connected to each other on its top wall. The second groove (36) is connected to the liquid collection hole (34). Several liquid collection columns (41) are placed inside the outer pipe (33). A partition (43) is set between adjacent liquid collection columns (41). The partition (43) divides the inner cavity of the outer pipe (33) into several liquid collection chambers. Each of the liquid collection chambers is connected to a liquid extraction hole (34). Each of the liquid collection chambers is provided with a sliding sealing plate (48). A connecting hole (39) is provided through one side of the sliding sealing plate (48). The sliding sealing plate (48) is slidably connected to the inner wall of the second slot (36). One side of the sliding sealing plate (48) is connected to the side wall of the second slot (36) through a spring (49). The sliding sealing plate (48) is connected to an airbag fixing end (46) through an airbag telescopic end (47). Adjacent airbag fixing ends (46) are connected through an air pipe (44). The top airbag fixing end (46) is connected to an air inlet pipe (44). The sliding sealing plate (48) is pushed by pneumatic action to control the opening and closing of the liquid extraction hole (34).

2. The oil spill detection equipment for offshore oil exploration platforms according to claim 1, characterized in that: When the oil pipeline (1) is set horizontally, a number of liquid extraction holes (34) are equidistantly distributed in the horizontal direction. When the oil pipeline (1) is set vertically, the distance between adjacent liquid extraction holes (34) gradually increases in the vertical direction. The distance between adjacent liquid extraction holes (34) at the top of the oil pipeline (1) is less than the distance between adjacent liquid extraction holes (34) at the bottom of the oil pipeline (1).

3. The oil spill detection equipment for offshore oil exploration platforms according to claim 1, characterized in that: The width of the first slot (35) is greater than the width of the second slot (36). The airbag fixing end (46) and the airbag telescopic end (47) form an airbag. The airbag is placed in the first slot (35). One side of the airbag telescopic end (47) is connected to the transfer sealing plate (48) through the connecting plate (45). The width of the first slot (35) is the same as the width of the connecting plate (45). An air inlet hole (38) is provided through the top of the airbag fixing end (46). One of the airbags... The bottom of the bladder fixing end (46) is connected to the top of the adjacent bladder fixing end (46) through the trachea (44). The top of the trachea (44) is connected to a threaded connecting pipe (37). The side of the threaded connecting pipe (37) is fixedly connected to the inner wall of the channel (32). The threaded connecting pipe (37) is threadedly connected to one end of the air inlet pipe (44). A handle (42) is provided at the top of the outer tube (33). The handle (42) is connected to the top of the liquid collection column (41).

4. The oil spill detection equipment for offshore oil exploration platforms according to claim 3, characterized in that: The connecting hole (39) is adapted to the liquid collection hole (34). When the connecting hole (39) and the liquid collection hole (34) are connected, seawater enters the liquid collection chamber through the connecting hole (39). The connecting plate (45) abuts against the side of the first slot (35) near the spring (49). When the gas in the airbag is drawn away, the extension end of the spring (49) is compressed, and the transfer sealing plate (48) seals the liquid collection hole (34).

5. The oil spill detection equipment for offshore oil exploration platforms according to claim 1, characterized in that: The outer tube (33) is an arc-shaped cross-section pipe. In the projection diagram of one end of the outer tube (33), the outer edge of the projection diagram is circular, and the inner edge of the projection diagram is a crescent shape composed of a large arc and straight lines at both ends of the large arc. The first slot (35) and the second slot (36) are located on one side of the straight lines at both ends of the large arc. The material of the liquid collection column (41) is either modified polyurethane sponge or cellulose-based elastic aerogel.

6. The oil spill detection equipment for offshore oil exploration platforms according to claim 3, characterized in that: After the outer tube (33) is extracted after sampling, all the sampling columns (41) and partitions (43) inside the outer tube (33) form a sampling strip. A hole (66) is provided between the handle (42) and the sampling column (41). A fixing plate (65) is inserted into the hole (66). The fixing plate (65) is connected to a screw spool (63) through a cross plate (64). The screw spool (63) is threadedly connected to the screw rod (62) through a nut. One end of the screw rod (62) is connected to the rotating end of the stepper motor (61). The screw spool (63) is used to drive the sampling strip and extract the sampling strip from the outer tube (33).

7. The oil spill detection equipment for offshore oil exploration platforms according to claim 6, characterized in that: A liquid guiding detection device is provided on one side of the stepper motor (61). The liquid guiding detection device includes a liquid guiding plate (72), which is located directly above the lead screw (62). Each liquid guiding plate (72) has a side plate (71) connected to both ends. A liquid outlet (76) is provided through the bottom of the liquid guiding plate (72). An inclined guide plate (73) is connected to the bottom of the liquid outlet (76). A liquid detection box (74) is provided below the bottom of the inclined guide plate (73). A contact oil film sensor (75) is installed in the liquid detection box (74).

8. The oil spill detection equipment for offshore oil exploration platforms according to claim 1, characterized in that: Each of the liquid collection columns (41) is adapted to a liquid guiding detection device. Several liquid guiding detection devices are distributed sequentially along the transverse axis of the screw (62). The liquid guiding detection device is used to guide the flow of liquid pressed out by one of the liquid collection columns (41) and detect oily substances in the liquid.

9. The oil spill detection equipment for offshore oil exploration platforms according to claim 7, characterized in that: Each of the liquid guiding plates (72) is provided with a pressure plate (54) directly above it. Each pressure plate (54) is connected to the moving plate (52) via a moving rod (53). The top of the moving plate (52) is connected to the telescopic end of the hydraulic cylinder (51). The pressure plate (54) is an elastic plate. The liquid guiding plate (72) is an arc plate. The cross-section of one end of the liquid guiding plate (72) is a semi-circular ring. The side of the liquid outlet (76) is located on the same plane as the longitudinal axis of the liquid guiding plate (72).

10. The oil spill detection equipment for offshore oil exploration platforms according to claim 7, characterized in that: Every 0.5-4 hours, open the liquid collection hole (34) of one of the outer tubes (33) to collect the liquid around the oil pipeline (1). The two adjacent outer tubes (33) for liquid collection are located on both sides of the axis of the oil pipeline (1).

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