Simulated helium and nitrogen leak detection device for sealing element of floating production storage and offloading vessel

Abstract

The invention relates to the technical field of helium and nitrogen leak detection, in particular to a floating production oil storage vessel sealing element simulation helium and nitrogen leak detection device which comprises a leak detection box, a sliding seat is arranged in the leak detection box in a sliding fit mode, a blowout preventer placing frame is fixedly connected to the sliding seat, and a blowout preventer positioning mechanism is rotatably connected to the blowout preventer placing frame. The bottom of the leak detection box is rotatably connected with an adjusting mechanism, one side of the adjusting mechanism is rotatably connected with an auxiliary supporting frame, the outer side of the leak detection box is provided with an equipment base in a sliding fit mode, and a mass spectrometer and a program calibration unit are placed on the equipment base. After the blowout preventer is placed on the blowout preventer placing frame, the sliding seat drives the blowout preventer to be retracted into the leak detection box, and meanwhile, under the action of the fixing rack, the multiple positioning plates matched with the blowout preventer in shape can abut against the outer portion of the blowout preventer, accurate positioning of the blowout preventer is achieved, and the accuracy of the leak detection process is ensured.

Description

Technical Field

[0001] This invention relates to the field of helium-nitrogen leak detection technology, and in particular to a simulated helium-nitrogen leak detection device for the seals of a floating production oil storage tanker. Background Technology

[0002] Floating Production Storage and Offloading (FPSO) seals play a crucial role in the oil and gas industry. They are used to ensure the integrity of equipment transporting and storing oil and natural gas, thereby preventing leaks and ensuring safety and environmental protection. FPSO seal simulation with helium-nitrogen leak detection is a technique used to test the sealing integrity of storage and production equipment. In the oil and gas industry, ensuring the sealing performance of equipment is critical to preventing leaks, protecting the environment, and ensuring personnel safety. Helium-nitrogen leak detection is commonly used to detect even minor leaks due to its high sensitivity and effectiveness.

[0003] The prior art publication CN115752933A provides a cryogenic leak detection test system for liquid rocket engine seals. It uses liquid nitrogen in a liquid nitrogen chamber as the first cooling source and liquid nitrogen in a test chamber as the second cooling source. This dual cooling allows the seal under test to quickly reach the required low temperature. Compared with existing leak detection devices, the cryogenic leak detection test system of this invention can reach a minimum test chamber temperature of -190°C, enabling rapid and effective cryogenic airtightness testing and accurate evaluation of liquid rocket engine seals.

[0004] Existing technologies enable precise leak detection of liquid rocket engine seals. However, when detecting leaks in blowout preventers (BOPs) of floating production tankers, the lack of a positioning structure adapted to the BOP's shape prevents the detection device from being positioned correctly and accurately pinpointing potential leaks. This results in incomplete and inaccurate data obtained during the detection process.

[0005] In summary, the existing technology lacks a positioning leak detection technology that is compatible with the shape of the blowout preventer in the seals of floating production storage tankers. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of the prior art by proposing a simulated helium-nitrogen leak detection device for the seals of a floating production oil storage tanker.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a floating production oil storage tanker seal simulation helium-nitrogen leak detection device, comprising a leak detection box, a sliding seat slidably disposed inside the leak detection box, a blowout preventer (BOP) placement frame fixedly connected to the sliding seat, a BOP positioning mechanism rotatably connected to the BOP placement frame, an adjustment mechanism rotatably connected to the bottom of the leak detection box, an auxiliary support frame rotatably connected to one side of the adjustment mechanism, and an equipment base slidably disposed outside the leak detection box, on which a mass spectrometer and a program calibration unit are placed.

[0008] Preferably, a lid is rotatably connected to the opening on one side of the leak detection box, and a storage groove is provided on one side of the bottom of the leak detection box, with a magnetic strip fixedly connected to the inner wall of the storage groove.

[0009] Preferably, a hydraulic rod is fixedly connected to the inner wall of the slide, and the other end of the hydraulic rod is fixedly connected to the inner wall of the leak detection box. Multiple pulleys are rotatably connected to the bottom ends of both sides of the slide.

[0010] Preferably, the blowout preventer placement rack is U-shaped, with placement slots at both ends of the upper side of the rack. Two flattening frames are fixedly connected symmetrically between the two ends of the rack, and multiple rollers are rotatably connected to the inner wall of each flattening frame in a linear structure.

[0011] Preferably, the blowout preventer positioning mechanism includes a bidirectional lead screw, which is rotatably connected to the bottom end of the blowout preventer placement frame. A transmission wheel is fixedly connected to the middle of the bidirectional lead screw, and a fixed rack is fixedly connected to the inner wall of the leak detection box. The transmission wheel and the fixed rack are meshed and driven. A movable frame is threadedly connected to both ends of the bidirectional lead screw, and a guide rod is fixedly connected to both ends of the movable frame.

[0012] Preferably, the guide rod has a movable frame that is slidably fitted on its outer wall, a positioning plate that is fixedly connected to the movable frame, a guide shaft that is rotatably connected to one end of the movable frame, and bending groove frames that are fixedly connected to both ends of the flattening frame. The outer wall of the guide shaft is slidably fitted with the inner wall of the bending groove frame.

[0013] Preferably, the adjusting mechanism includes a universal joint, one end of which is rotatably connected to the inner wall of the leak detection box, an adjusting wheel is fixedly connected to the outer end of the universal joint, a transmission rack is fixedly connected to the inner wall of the slide, the adjusting wheel and the transmission rack are meshed and driven, a worm is fixedly connected to the other end of the universal joint, one end of the worm is rotatably connected to the inner wall of the leak detection box, worm wheels are meshed and driven on both sides of the worm, the worm wheels are rotatably connected to the inner wall of the leak detection box through a pin, the bottom end of the pin extends through the inner wall of the leak detection box to the outside and is fixedly connected to a connecting rod assembly, the other end of the connecting rod assembly is rotatably connected to an auxiliary support frame.

[0014] Preferably, the bottom end of the auxiliary support frame is rotatably connected with multiple rollers.

[0015] Preferably, one end of the device base is slidably fitted with the inner wall of the storage slot, a second magnetic strip is fixedly connected to one end of the device base, the second magnetic strip is magnetically connected to the first magnetic strip, and two support feet are fixedly connected to the bottom of the device base.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By setting up a blowout preventer (BOP) placement rack and a BOP positioning mechanism, after the BOP is placed on the BOP placement rack, the slide moves the BOP back into the leak detection box. At the same time, under the action of the fixed rack, multiple positioning plates that are adapted to the shape of the BOP can abut against the outside of the BOP, achieving precise positioning. This ensures that the BOP is accurately positioned on the BOP placement rack and that the connection is correct, thereby improving the reliability of leak detection, effectively reducing the omission of leaks due to positional deviations, and ensuring the accuracy of the leak detection process. By setting up an adjustment mechanism and an auxiliary support frame, when the slide is moved out for the hoisting of the blowout preventer, the slide can automatically drive the auxiliary support frame to move out through the adjustment mechanism to support the slide, which enhances the stability of the overall structure, avoids component damage or safety hazards caused by tilting or shaking, ensures that the blowout preventer can operate safely and stably during the hoisting process, and reduces the risk of accidents. By installing a sliding equipment base at the bottom of the leak detection box, it is convenient to place leak detection equipment such as mass spectrometers. Operators can quickly configure the equipment according to actual needs. At the same time, by installing a bending groove frame on the blowout preventer (BOP) mounting rack, the positioning plate can automatically move downward when the positioning is released, preventing the BOP from colliding with the positioning plate when it is removed from the BOP mounting rack. This protects the BOP and the positioning plate, reduces the probability of equipment damage, and improves safety. It also enhances the ease of operation and equipment compatibility of the floating production oil storage tanker seal simulation helium-nitrogen leak detection device, effectively reducing the risk of collision and operational complexity, while improving overall safety and accuracy. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a simulated helium-nitrogen leak detection device for the sealing components of a floating production oil storage tanker according to the present invention; Figure 2 This is a partial cross-sectional view of the overall structure of a simulated helium-nitrogen leak detection device for the sealing components of a floating production oil storage tanker according to the present invention; Figure 3 This is a partial cross-sectional schematic diagram of the leak detection box structure of a simulated helium-nitrogen leak detection device for the sealing components of a floating production oil storage tanker according to the present invention; Figure 4 This is a partial cross-sectional schematic diagram of the slide structure of a simulated helium-nitrogen leak detection device for a floating production oil storage tanker seal according to the present invention; Figure 5 This is a schematic diagram of the structure of a blowout preventer placement rack and other components of a floating production oil storage tanker seal simulation helium-nitrogen leak detection device according to the present invention. Figure 6 This is a partially unfolded schematic diagram of the positioning mechanism of the blowout preventer of a simulated helium-nitrogen leak detection device for the sealing components of a floating production oil storage tanker according to the present invention. Figure 7 This is a schematic diagram of the adjustment mechanism and auxiliary support frame structure of a floating production oil storage tanker seal simulation helium-nitrogen leak detection device according to the present invention. Figure 8 This is a schematic diagram of the equipment base structure of a simulated helium-nitrogen leak detection device for the sealing components of a floating production oil storage tanker according to the present invention.

[0018] The diagram shows: 1. Leak detection box; 2. Slide; 3. BOP placement rack; 4. BOP positioning mechanism; 5. Adjustment mechanism; 6. Auxiliary support frame; 7. Equipment base; 8. Mass spectrometer; 9. Program calibration unit; 101. Box cover; 102. Fixed rack; 103. Storage slot; 104. Magnetic strip one; 201. Hydraulic rod; 202. Transmission rack; 203. Pulley; 301. Placement slot; 302 1. Flattening frame; 303. Roller; 304. Bending groove frame; 401. Two-way lead screw; 402. Transmission wheel; 403. Moving frame; 404. Guide rod; 405. Movable frame; 406. Positioning plate; 407. Guide shaft; 501. Universal joint; 502. Adjusting wheel; 503. Worm gear; 504. Worm wheel; 505. Linkage assembly; 601. Roller; 701. Magnetic strip II; 702. Support foot. Detailed Implementation

[0019] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figures 1-8The floating production storage tanker seal simulation helium-nitrogen leak detection device shown includes a leak detection box 1, a sliding seat 2 slidably fitted inside the leak detection box 1, a blowout preventer (BOP) placement frame 3 fixedly connected to the sliding seat 2, a BOP positioning mechanism 4 rotatably connected to the BOP placement frame 3, an adjustment mechanism 5 rotatably connected to the bottom of the leak detection box 1, an auxiliary support frame 6 rotatably connected to one side of the adjustment mechanism 5, and an equipment base 7 slidably fitted outside the leak detection box 1, on which a mass spectrometer 8 and a program calibration unit 9 are placed.

[0021] To enhance leak detection accuracy and intelligent monitoring, the device is equipped with multiple sets of intelligent sensors: a pressure intelligent sensor embedded in the inner wall of the leak detection chamber 1 collects real-time pressure data of the helium-nitrogen mixture inside the chamber, accurately capturing minute pressure fluctuations and feeding them back to the control system; a temperature intelligent sensor installed on the side of the blowout preventer mounting bracket 3 simultaneously monitors the ambient temperature of the sealing component, preventing temperature changes from interfering with the leak detection results; and a gas concentration intelligent sensor is also installed at the sampling pipeline of the mass spectrometer 8 to assist in verifying the purity of the leak detection gas and the reliability of the leakage detection data. All intelligent sensors are linked to the program calibration unit 9 via a data bus, enabling automatic data calibration, abnormal alarms, and adaptive adjustment of detection parameters, significantly improving the device's automated operation capabilities and the reliability of the detection results.

[0022] like Figure 3 As shown, a cover 101 is rotatably connected to the opening on one side of the leak detection box 1. A storage groove 103 is opened on one side of the bottom of the leak detection box 1, and a magnetic strip 104 is fixedly connected to the inner wall of the storage groove 103. Multiple detection ports are opened through the upper part of the inner wall on one side of the leak detection box 1 to facilitate the insertion of the detection part of the detection equipment into the leak detection box 1. The detection part of the detection equipment is fitted with a sealing sleeve that matches the detection port to ensure the sealing during detection.

[0023] The size of the storage slot 103 is precisely matched with the device base 7, which can completely store the device base 7 and reduce the area occupied by the device; the magnetic strip 104 is a high magnetic force neodymium iron boron magnetic strip, which is magnetically attracted with the magnetic strip 701 to ensure that the device base 7 is stable and does not shake after being stored, while also making it easy to take out and use quickly.

[0024] like Figure 4 As shown, a hydraulic rod 201 is fixedly connected to the inner wall of the slide 2, and the other end of the hydraulic rod 201 is fixedly connected to the inner wall of the leak detection box 1. Multiple pulleys 203 are rotatably connected to the bottom ends of both sides of the slide 2.

[0025] The slide 2 can be removed for easy placement and removal of the blowout preventer.

[0026] like Figure 5As shown, the blowout preventer placement frame 3 is U-shaped. Placement slots 301 are provided at both ends of the upper side of the blowout preventer placement frame 3. Two flat racks 302 are fixedly connected between the two ends of the blowout preventer placement frame 3 in a symmetrical structure. Multiple rollers 303 are rotatably connected to the inner wall of the flat rack 302 in a linear structure.

[0027] The curvature of the placement slot 301 matches the shape of the blowout preventer, and the slot is lined with anti-slip rubber pads to prevent the blowout preventer from slipping during placement and movement; the rollers 303 of the flattening frame 302 are made of stainless steel with a polished surface and a low coefficient of friction, which can easily push the blowout preventer to adjust its position on the placement frame, improving the ease of operation.

[0028] like Figure 5 , Figure 6 As shown, the blowout preventer positioning mechanism 4 includes a bidirectional lead screw 401, which is rotatably connected to the bottom end of the blowout preventer placement frame 3. A transmission wheel 402 is fixedly connected to the middle of the bidirectional lead screw 401, and a fixed rack 102 is fixedly connected to the inner wall of the leak detection box 1. The transmission wheel 402 and the fixed rack 102 are meshed and driven. A movable frame 403 is threadedly connected to both ends of the bidirectional lead screw 401, and a guide rod 404 is fixedly connected to both ends of the movable frame 403.

[0029] A movable frame 405 is slidably fitted on the outer wall of the guide rod 404. A positioning plate 406 is fixedly connected to the movable frame 405. A guide shaft 407 is rotatably connected to one end of the movable frame 405. A bending groove frame 304 is fixedly connected to both ends of the flattening frame 302. The outer wall of the guide shaft 407 is slidably fitted with the inner wall of the bending groove frame 304.

[0030] A polyurethane buffer pad is pasted on the inside of the positioning plate 406, which can not only ensure the positioning is firm, but also avoid scratching the sealing coating on the surface of the blowout preventer; the bent slot frame 304 can guide the guide shaft 407 to move horizontally first and then downward, so as to realize the positioning plate 406 to position first and then avoid.

[0031] By setting up a blowout preventer (BOP) placement rack 3 and a BOP positioning mechanism 4, after the BOP is placed on the BOP placement rack 3, the slide 2 drives the BOP back into the leak detection box 1. At the same time, under the action of the fixed rack 102, multiple positioning plates 406 that are adapted to the shape of the BOP can abut against the outside of the BOP, achieving precise positioning and ensuring that the BOP is accurately positioned on the BOP placement rack 3 and correctly connected. This improves the reliability of leak detection, effectively reduces the omission of leaks due to positional deviations, and ensures the accuracy of the leak detection process.

[0032] like Figure 7As shown, the adjustment mechanism 5 includes a universal joint 501. One end of the universal joint 501 is rotatably connected to the inner wall of the leak detection box 1. An adjustment wheel 502 is fixedly connected to the outer end of the universal joint 501. A transmission rack 202 is fixedly connected to the inner wall of the slide block 2. The adjustment wheel 502 and the transmission rack 202 are meshed and driven. A worm gear 503 is fixedly connected to the other end of the universal joint 501. One end of the worm gear 503 is rotatably connected to the inner wall of the leak detection box 1. Worm wheels 504 are meshed and driven on both sides of the worm gear 503. The worm wheels 504 are rotatably connected to the inner wall of the leak detection box 1 through a pin. The bottom end of the pin extends through the inner wall of the leak detection box 1 to the outside and is fixedly connected to a connecting rod assembly 505. The other end of the connecting rod assembly 505 is rotatably connected to the auxiliary support frame 6.

[0033] like Figure 7 As shown, multiple rollers 601 are rotatably connected to the bottom of the auxiliary support frame 6. The rollers 601 make the movement of the auxiliary support frame 6 more stable and effortless.

[0034] like Figure 3 , Figure 8 As shown, one end of the device base 7 is slidably fitted to the inner wall of the storage groove 103, and a second magnetic strip 701 is fixedly connected to one end of the device base 7. The second magnetic strip 701 is magnetically connected to the first magnetic strip 104. Two support feet 702 are fixedly connected to the bottom of the device base 7. The support feet 702 provide stable support for the device base 7.

[0035] Working principle: First, the blowout preventer (BOP) to be tested is placed on the BOP placement rack 3 inside the leak detection box 1. The box cover 101 is opened, and the hydraulic rod 201 is extended, pushing the slide 2 outwards along the inner wall of the leak detection box 1. The pulley 203 at the bottom of the slide 2 moves smoothly. Simultaneously, the slide 2 drives the transmission rack 202 to move synchronously, engaging with the adjusting wheel 502 of the adjusting mechanism 5. The adjusting wheel 502 drives the worm gear 503 to rotate via the universal joint 501. The worm gear 503 engages with the worm wheels 504 on both sides, driving the worm wheels 504 to rotate. The worm wheels 504 drive the connecting rod assembly 505 to unfold via a pin, thereby pushing the auxiliary support frame 6 outwards to provide stable support for the slide 2. Then, the operator uses hoisting equipment to place the FPSO BOP to be tested onto the BOP placement rack 3.

[0036] Then, the hydraulic rod 201 is retracted, pulling the slide 2 into the leak detection box 1. During the movement of the slide 2, the transmission wheel 402 of the blowout preventer positioning mechanism 4 meshes with the fixed rack 102 on the inner wall of the leak detection box 1, driving the bidirectional lead screw 401 to rotate. The bidirectional lead screw 401 drives the two moving frames 403 to move towards each other. The moving frames 403 drive the movable frame 405 to slide horizontally along the guide rod 404. At this time, the guide shaft 407 moves along the inclined end of the bent slot frame 304, causing the positioning plate 406 to move upward. Then, when the guide shaft 407 moves to the straight structure of the bent slot frame 304, the positioning plate 406 moves synchronously towards the blowout preventer until the buffer pad of the positioning plate 406 is tightly attached to the outer wall of the blowout preventer, achieving accurate positioning of the blowout preventer. At the same time, the auxiliary support frame 6 gradually retracts with the retraction of the slide 2, and is finally completely stored at the bottom of the leak detection box 1.

[0037] Then, close the cover 101 of the leak detection box 1. An inflatable lip sealing ring is embedded at the mating end of the cover 101 and the body of the leak detection box 1. Inflate the sealing ring of the cover 101 to a pressure of 0.3~0.35MPa. At the same time, the pressure inside the sealing ring cavity is monitored in real time by a pressure sensor and closed-loop adjustment is performed by the inflation valve group. After inflation, the lip can undergo elastic expansion and deformation to achieve interference seal. Then, a helium-nitrogen mixed leak detection gas is filled into the sealing cavity of the blowout preventer to maintain stable gas pressure. The operator takes out the equipment base 7 from the storage tank 103, connects the detection probe of the mass spectrometer 8 to the detection port of the leak detection box 1, and starts the program calibration unit 9 to perform accuracy calibration on the mass spectrometer 8. After calibration, the mass spectrometer 8 is started to detect the helium concentration in the leak detection box 1. If the helium concentration exceeds the standard, it is determined that there is a leak in the blowout preventer, and the location of the leak is located by the concentration distribution.

[0038] After leak detection is completed, the gas pressure inside the leak detection box 1 is released, and the box cover 101 is opened. The hydraulic rod 201 is activated to extend, pushing the slide 2 outward. At this time, the transmission wheel 402 and the fixed rack 102 engage in reverse transmission, and the bidirectional screw 401 drives the moving frame 403 to move in the opposite direction. The movable frame 405 drives the guide shaft 407 to move outward along the horizontal section of the bent groove frame 304, releasing the positioning of the blowout preventer. Then, the guide shaft 407 slides down along the inclined section of the bent groove frame 304, driving the positioning plate 406 to automatically move down below the blowout preventer to avoid it. At the same time, the auxiliary support frame 6 automatically unfolds again to support the slide 2. The operator uses the hoisting equipment to remove the blowout preventer from the blowout preventer placement frame 3, completing the leak detection process. Finally, the equipment base 7 is pushed back into the storage tank 103, and the magnetic strip 201 and magnetic strip 104 are magnetically fixed. The hydraulic rod 201 is activated to retract, driving the slide 2 to completely retract into the leak detection box 1, and the equipment is reset.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A simulated helium-nitrogen leak detection device for the seals of a floating production storage tanker, comprising a leak detection box (1), characterized in that: The leak detection box (1) is equipped with a sliding seat (2), and a blowout preventer placement rack (3) is fixedly connected to the sliding seat (2). A blowout preventer positioning mechanism (4) is rotatably connected to the blowout preventer placement rack (3). An adjustment mechanism (5) is rotatably connected to the bottom of the leak detection box (1). An auxiliary support frame (6) is rotatably connected to one side of the adjustment mechanism (5). An equipment base (7) is slidably connected to the outside of the leak detection box (1). A mass spectrometer (8) and a program calibration unit (9) are placed on the equipment base (7).

2. The floating production storage tanker seal simulation helium-nitrogen leak detection device according to claim 1, characterized in that: The leak detection box (1) has a lid (101) rotatably connected to one side of the opening. The leak detection box (1) has a storage groove (103) on one side of the bottom end. A magnetic strip (104) is fixedly connected to the inner wall of the storage groove (103).

3. The floating production storage tanker seal simulation helium-nitrogen leak detection device according to claim 1, characterized in that: A hydraulic rod (201) is fixedly connected to the inner wall of the slide (2), and the other end of the hydraulic rod (201) is fixedly connected to the inner wall of the leak detection box (1). Multiple pulleys (203) are rotatably connected to the bottom ends of both sides of the slide (2).

4. The floating production storage tanker seal simulation helium-nitrogen leak detection device according to claim 1, characterized in that: The blowout preventer placement rack (3) is U-shaped. Placement slots (301) are provided at both ends of the upper side of the blowout preventer placement rack (3). Two flat racks (302) are fixedly connected between the two ends of the blowout preventer placement rack (3) in a symmetrical structure. Multiple rollers (303) are rotatably connected to the inner wall of the flat rack (302) in a linear structure.

5. A simulated helium-nitrogen leak detection device for the sealing components of a floating production storage tanker according to claim 4, characterized in that: The blowout preventer positioning mechanism (4) includes a bidirectional lead screw (401), which is rotatably connected to the bottom end of the blowout preventer placement frame (3). A transmission wheel (402) is fixedly connected to the middle of the bidirectional lead screw (401), and a fixed rack (102) is fixedly connected to the inner wall of the leak detection box (1). The transmission wheel (402) meshes with the fixed rack (102) for transmission. A movable frame (403) is threadedly connected to both ends of the bidirectional lead screw (401), and a guide rod (404) is fixedly connected to both ends of the movable frame (403).

6. The floating production storage tanker seal simulation helium-nitrogen leak detection device according to claim 5, characterized in that: The guide rod (404) has a movable frame (405) that is slidably fitted on its outer wall. A positioning plate (406) is fixedly connected to the movable frame (405). A guide shaft (407) is rotatably connected to one end of the movable frame (405). Bending groove frames (304) are fixedly connected to both ends of the flattening frame (302). The outer wall of the guide shaft (407) is slidably fitted to the inner wall of the bending groove frame (304).

7. The floating production storage tanker seal simulation helium-nitrogen leak detection device according to claim 1, characterized in that: The adjusting mechanism (5) includes a universal joint (501). One end of the universal joint (501) is rotatably connected to the inner wall of the leak detection box (1). An adjusting wheel (502) is fixedly connected to the outer end of the universal joint (501). A transmission rack (202) is fixedly connected to the inner wall of the slide (2). The adjusting wheel (502) meshes with the transmission rack (202). A worm gear is fixedly connected to the other end of the universal joint (501). 503), one end of the worm (503) is rotatably connected to the inner wall of the leak detection box (1), and both sides of the worm (503) are meshed with worm wheels (504). The worm wheels (504) are rotatably connected to the inner wall of the leak detection box (1) through a pin. The bottom end of the pin extends through the inner wall of the leak detection box (1) to the outside and is fixedly connected to a connecting rod assembly (505). The other end of the connecting rod assembly (505) is rotatably connected to the auxiliary support frame (6).

8. The floating production storage tanker seal simulation helium-nitrogen leak detection device according to claim 1, characterized in that: The bottom end of the auxiliary support frame (6) is rotatably connected to multiple rollers (601).

9. A simulated helium-nitrogen leak detection device for the sealing components of a floating production storage tanker according to claim 2, characterized in that: One end of the device base (7) is slidably fitted with the inner wall of the storage groove (103). A magnetic stripe two (701) is fixedly connected to one end of the device base (7). The magnetic stripe two (701) is magnetically connected to the magnetic stripe one (104). Two support feet (702) are fixedly connected to the bottom of the device base (7).

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