Underwater high-pressure sealing door test system and test method

Abstract

The invention discloses an underwater high-pressure sealing door test system and a test method, and relates to the technical field of sunken ship salvage. An electric sliding rail is fixedly mounted at the edge of the bottom of the inner wall of the water tank, a U-shaped frame is slidably mounted in the electric sliding rail, an abutting block is fixedly mounted on the outer wall of the U-shaped frame, a waved plate is fixedly mounted in the U-shaped frame, and a cold flow device for cooling is arranged on the periphery of the waved plate; an impact device for detecting equipment stability is arranged on the right side of the cold flow device; and an L-shaped plate is slidably mounted on the left side of the inner wall of the water tank through a spring. Through horizontal disturbance of the waved plate, a water tank water source is promoted to rapidly impact the experimental equipment in a reciprocating manner, the sealing characteristic and the opening and closing operation performance of the watertight door are prevented from being tested under static water flow, the experimental environment is more fit with the underwater environment, and the limitation of a test result is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of shipwreck salvage, in particular to an underwater high-pressure sealing door test system and a test method. Background Art

[0002] With the development of science and technology, for the rapid salvage of deep-water shipwrecks, welding robots are usually used to complete high-quality underwater welding work, and a dry environment is created underwater through a multifunctional high-pressure dry welding chamber, which provides great convenience for underwater welding.

[0003] Patent publication number CN119643186A discloses a method for testing and verifying an underwater high-pressure dry welding cabin, which relates to the field of shipwreck salvage technology and includes the following steps: testing the sealing performance and effectiveness of the magnetic adsorption mechanism and rubber seal on the welding cabin under the action of the designed magnetic adsorption force and the internal and external pressure difference of 5 meters under an ambient water pressure of 300 meters; testing the sealing performance of the watertight door on the welding cabin under an ambient water pressure of 300 meters, including testing the effectiveness of the opening and closing of the sealing door and the effectiveness of the sealing of the sealing door; the patent forms a scientific, rigorous and complete test verification system through subsystem process tests such as high-pressure adsorption sealing test, high-pressure functional test of watertight door, high-pressure test of air pressure control system, shallow water test of propulsion ballast system, high-pressure action test of robot, welding process laboratory inspection, water tank test of integrated system, shallow water functional test and final sea trial verification, which fully proves the feasibility of the underwater high-pressure dry welding cabin.

[0004] However, the device still has some shortcomings: the feasibility of the underwater high-pressure dry welding chamber has been verified through a series of experiments, but the sealing characteristics and opening and closing operation performance of the watertight door are tested under static water flow. However, the underwater environment is relatively complex, and undercurrents may occur, causing large fluctuations in the water flow. The static test environment set in this way is likely to lead to certain limitations in the test results. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides an underwater high-pressure sealing door test system and test method, which solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an underwater high-pressure sealing door testing system, comprising a high-pressure chamber, wherein a water trough is provided inside the high-pressure chamber, an electric slide rail is fixedly installed at the bottom edge of the inner wall of the water trough, a U-shaped frame is slidably installed inside the electric slide rail, and a resistance block is fixedly installed on the outer wall of the U-shaped frame, a wave plate is fixedly installed inside the U-shaped frame, a cold flow device for cooling is provided on the periphery of the wave plate, and an impact device for detecting the stability of the equipment is provided on the right side of the cold flow device. An L-shaped plate is slidably installed on the left side of the inner wall of the water trough through a spring, an arc plate is fixedly installed on the side of the L-shaped plate close to the electric slide rail, and a screw rod is rotatably installed on the side of the L-shaped plate away from the electric slide rail, and several interference flow plates are equidistantly and fixedly installed on the outer wall of the screw rod, a limit plate is provided at the left edge of the inner wall of the water trough, and one end of the front side of the screw rod passes through and is movably installed inside the limit plate.

[0007] According to the above technical solution, the high-pressure chamber controls its own internal pressure through an external device, a water injection mechanism is provided on the right side of the high-pressure chamber, the water tank is connected to the water injection mechanism, a welding equipment cabin is provided inside the water tank, and the welding equipment cabin conducts a series of experiments inside the water tank, an open welding cabin fitting surface is provided at the bottom of the welding equipment cabin, the bottom of the open welding cabin fitting surface is in contact with the bottom of the inner wall of the water tank, a welding operation cabin is provided between the inside of the open welding cabin fitting surface and the bottom of the welding equipment cabin, a watertight door is provided inside the welding operation cabin, and the sealing of the equipment is detected by checking whether the watertight door is leaking, a number of hydraulic magnetic devices are equidistantly provided on the outer wall of the welding equipment cabin, a watertight door mechanical control device is provided inside the welding equipment cabin, and the telescopic end of the watertight door mechanical control device is in contact with the watertight The door is fixedly connected, the water tank and the welding cabin model are placed in the high-pressure cabin, the water tank is placed horizontally on the bottom of the high-pressure cabin, and the welding equipment cabin is placed with the fitting surface facing down in the water tank; the high-pressure cabin is pressurized to increase the pressure in the cabin to 2.9 MPa; the hydraulic magnetic device is adjusted to tightly fit the fitting surface of the open welding cabin with the bottom of the water tank until the hydraulic cylinder reaches the design value; water is poured into the water tank so that the water surface is about 0.2 m above the adsorption surface, and the high-pressure cabin is continuously pressurized to reach a pressure value of 3 MPa. The pressure is maintained for 1 hour, and the pressure changes inside and outside the welding cabin are observed through the internal pressure sensor of the welding equipment cabin, and the water seepage is observed through the camera arranged in the welding equipment cabin. The standard is that the hydraulic magnetic device can normally adsorb and detach and maintain pressure for 1 hour during the test, and the pressure change in the cabin is less than 0.01 MPa and the water level change is less than 1 cm. In the subsequent high-pressure functional test of the watertight door, the watertight door of the welding equipment cabin was opened, the welding equipment cabin was placed in the high-pressure cabin, and the high-pressure cabin was pressurized to 3.3 MPa; the watertight door was opened and closed continuously 30 times; the high-pressure cabin 1 was depressurized until the pressure reached 2.9 MPa, and the watertight door was closed; the welding equipment cabin was pressurized to 3 MPa, the pressure was maintained for 1 hour, and the pressure difference between the inside and outside of the watertight door was measured; the high-pressure cabin was pressurized to 3.1 MPa, the pressure was maintained for 1 hour, and the pressure difference between the inside and outside of the watertight door was measured; the standard was that the watertight door could be opened and closed normally 30 times under high-pressure conditions, and the pressure difference between the inside and outside of the watertight door was reduced to no more than 0.01 MPa after stabilizing for 1 hour; According to the above technical solution, the wave plate disturbs the water flow inside the water tank to simulate the underwater fluctuating water flow, the L-shaped plate relies on the spring elastic force to achieve horizontal reset, the arc surface of the arc plate is located on the movement trajectory of the resistance block, the outer wall of the screw rod is a non-self-locking reciprocating spiral groove, and the spoiler disturbs the water source below the water tank. When it is necessary to conduct a dynamic water flow experiment on the equipment, the electric slide is started, and the electric slide drives the U-shaped frame to slide back and forth horizontally inside itself, and the U-shaped frame drives the wave plate to move synchronously, and the wave plate disturbs the water source inside the water tank through its own wave surface. The water source disturbed by the wave plate flows toward the welding equipment cabin and The open welding cabin fits the surface, and this is done reciprocally. When the U-shaped frame moves horizontally, it drives the resistance block to contact the arc surface of the arc plate. Under the resistance of the resistance block, the arc plate pushes the L-shaped plate to slide horizontally along the left side of the inner wall of the water tank. When the resistance plate is freed from the resistance to the arc plate, the L-shaped plate is reset by the spring force, and this is done reciprocally. When the L-shaped plate moves horizontally, it drives the screw rod to move synchronously. The non-self-locking spiral groove of the screw rod is limited by the limit plate, which causes the screw rod to generate a rotational force during the movement. At this time, the screw rod drives the spoiler to revolve, and the spoiler revolves to disturb the water flow below the inside of the water tank, causing the water source to flow mainly to the lower half of the experimental equipment.

[0008] According to the above technical solution, the cold flow device includes a vertical plate, the outer wall of the vertical plate is fixedly installed at the edge of the L-shaped plate surface, a circular groove is opened at the top of the vertical plate, a circular wheel is rotatably installed inside the circular groove of the vertical plate, a cooling mechanism is installed on the left side of the inner wall of the water tank through spring sliding, and a trapezoidal plate is fixedly installed at the bottom of the cooling mechanism.

[0009] According to the above technical solution, the bottom of the vertical plate contacts the bottom of the inner wall of the water tank, and the cooling mechanism cools the water source inside the water tank to simulate the bottom water situation. The inclined surface of the trapezoidal plate is located on the movement trajectory of the circular wheel. The cooling mechanism relies on the trapezoidal plate to generate an upward force, and the L-shaped plate drives the vertical plate to move horizontally and reset. The vertical plate drives the circular wheel to move synchronously. During the horizontal movement of the circular wheel, it contacts and rubs with the inclined surface of the trapezoidal plate and generates a rotation force. At this time, the circular wheel moves with the vertical plate and rotates to push the inclined surface of the trapezoidal plate, causing the trapezoidal plate to generate an upward force. The trapezoidal plate pushes the cooling mechanism to slide upward along the inner wall of the water tank. After that, the cooling mechanism is reset by the spring force, thereby prompting the cooling mechanism to perform a comprehensive cooling treatment around the experimental equipment.

[0010] According to the above technical solution, two fixed plates are symmetrically and fixedly installed on the top of the cooling mechanism, and a cross bar is fixedly installed on the opposite side of the two fixed plates. The outer wall of the cross bar is penetrated by a torsion spring and a flip plate is rotatably installed. The flip plate limits the flow direction of the cold air emitted by the cooling mechanism to a certain extent, and a U-shaped plate is fixedly installed on the upper left side of the inner wall of the water tank. The bottom of the U-shaped plate contacts the top edge of the flip plate. The cooling mechanism drives the fixed plate to move upward and reset, and the fixed plate drives the cross bar to move synchronously. In the process of driving the flip plate upward, the cross bar will contact the bottom of the U-shaped plate. When the flip plate is limited by the U-shaped plate, the hinge shaft between itself and the cross bar generates a rotational force, and the flip plate flips downward in an arc trajectory with the hinge shaft as the axis. At this time, the flip plate blocks and guides the cold flow emitted by the cooling mechanism in an inclined posture.

[0011] According to the above technical solution, the impact device includes a transmission plate, the back side of the left end of the transmission plate is fixedly mounted on the front side of the fixed plate, a rotating rod is rotatably mounted at the bottom corner of the inner wall of the water tank, a non-self-locking spiral groove is opened on the outer wall of the top of the rotating rod, the transmission plate moves inside and passes through the outer wall of the rotating rod, a cam is passed through and fixedly mounted on the outer wall of the bottom end of the rotating rod, an impact frame is slidably mounted on the bottom of the inner wall of the water tank through a spring, the outer wall of the impact frame is in contact with the surface of the hydraulic magnetic device, a friction roller is rotatably mounted inside the impact frame, the outer wall of the friction roller is in contact with the arc surface of the cam, and when the fixed plate moves upward, the transmission plate is driven to move synchronously, and when the transmission plate moves upward, the non-self-locking spiral groove on the outer wall of the rotating rod is driven to generate a rotational force, at this time, the rotating rod drives the cam to revolve along the bottom of the inner wall of the water tank, and when the cam revolves, the friction roller relies on the spring force between the impact frame and the inner wall of the water tank to cause the outer wall of the friction roller to always fit and rub the outer wall of the cam, and at this time, the friction roller rotates inside the impact frame, so that the impact frame repeatedly moves away from and against the outer wall of the hydraulic magnetic device during the movement of the cam.

[0012] According to the above technical solution, a pull plate is fixedly installed on the side of the impact frame away from the cam, and a number of rounded corner plates are symmetrically and fixedly installed inside the pull plate. A telescopic protrusion is fixedly installed on the front side of the inner wall of the water tank, and a spring is built into the telescopic protrusion. The arc surface of the telescopic end of the telescopic protrusion is located on the movement trajectory of the rounded corner plate. When the impact frame drives the pull plate to move horizontally, the pull plate drives the rounded corner plate to move synchronously. When the symmetrically distributed rounded corner plates move horizontally, they will contact and conflict with the convex arc surface of the outer wall of the telescopic end of the telescopic protrusion. At this time, the telescopic end of the telescopic protrusion will generate a contraction force. When the rounded corner plate passes over the convex arc surface of the telescopic protrusion, the telescopic end of the telescopic protrusion is released from the contraction and storage state through the spring force, and the telescopic end of the telescopic protrusion will suddenly hit the surface of the hydraulic magnetic suction device and repeat this process.

[0013] A method for testing an underwater high-pressure sealing door test system comprises the following steps: S1: In the watertight door high-pressure functional test, open the watertight door of the welding equipment cabin, place the welding equipment cabin in the high-pressure cabin, and pressurize the high-pressure cabin to 3.3MPa; S2: Continuously open and close the watertight door 30 times; depressurize the high-pressure chamber until the pressure reaches 2.9 MPa, and then close the watertight door; pressurize the welding equipment compartment to 3 MPa, maintain the pressure for 1 hour, and measure the pressure difference between the inside and outside of the watertight door; S3: Pressurize the hyperbaric chamber to 3.1 MPa, maintain the pressure for 1 hour, and measure the pressure difference between the inside and outside of the watertight door; S4: The standard is that the watertight door can open and close normally 30 times under high pressure environment, and the pressure difference between the inside and outside of the watertight door is reduced to no more than 0.01MPa for 1 hour.

[0014] The present invention provides an underwater high-pressure sealing door test system and test method. It has the following beneficial effects: (1) The present invention cooperates with a high-pressure chamber, a water tank, a welding equipment chamber, an open welding chamber joint surface, a welding operation chamber, a watertight door, a hydraulic magnetic device and a watertight door mechanical control device, so that the underwater high-pressure sealing door test system and test method can be widely used in the early test and verification stage of deep-sealing equipment. Through comprehensive testing, the feasibility and reliability of deep-sealing equipment can be verified in the design stage, which is of great significance to the design and development of deep-sealing equipment. Through the coordination of electric slide rails, U-shaped frames, wave plates, L-shaped plates, curved plates, screw rods, spoilers and limit plates, the horizontal disturbance of the wave plates causes the water source in the water tank to quickly and reciprocatingly impact the experimental equipment, avoiding the sealing characteristics and opening and closing operation performance of the watertight door being tested under static water flow, making the experimental environment more closely aligned with the underwater environment and reducing the limitations of the test results; through the revolution of the spoiler, the flow direction of the water source in the experimental equipment is effectively expanded, and the lower-level circulating water source continuously flushes the outer wall of the open welding cabin fitting surface. During this period, the requirements for the fitting and sealing between the fitting surface of the open welding cabin and the bottom of the inner wall of the water tank are improved.

[0015] (2) The present invention effectively expands the cooling range of the cooling mechanism by setting up a cold flow device, through the cooperation of an L-shaped plate, a vertical plate, a circular wheel, a cooling mechanism, a trapezoidal plate, a fixed plate, a horizontal bar, a flip plate and a U-shaped plate, and through the self-rotational resistance of the circular wheel, that is, continuously cooling the water source around the experimental equipment to simulate the situation where the actual bottom water temperature is lower than the ground. In this early stage, the above-mentioned detection process is repeated to determine whether the detection result has changed to determine the stability of the equipment; through the reciprocating flipping of the flip plate, the cold flow emitted by the cooling mechanism can be used to cool the water source in a more concentrated manner, thereby improving the cooling rate of the water source around the experimental equipment to a certain extent, shortening the waiting time for experiments at different low temperatures, and improving efficiency.

[0016] (3) The present invention sets an impact device, cooperates with a fixed plate, a transmission plate, a rotating rod, a cam, an impact frame, a friction roller, a pull plate, a rounded plate and a telescopic protrusion, and causes indirect sliding resistance of the impact frame to effectively increase the external interference force of the hydraulic magnetic device under the experimental premise of dynamic water flow, thereby detecting the magnetic attraction strength of the hydraulic magnetic device, avoiding the phenomenon of falling off due to insufficient suction force in actual use, resulting in displacement or tilting of the fitting surface between the welding equipment cabin and the open welding cabin, and ensuring safety in underwater use; the reciprocating impact of the telescopic protrusion causes the hydraulic magnetic device to generate slight vibration, thereby detecting whether the magnetic attraction data of the hydraulic magnetic device to the bottom of the inner wall of the water tank changes significantly under the interference of vibration when the experimental equipment generates slight vibration due to operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 A schematic cross-sectional view of the present invention as a whole; Figure 3 This is a schematic diagram of the surrounding structure of the welding equipment cabin of the present invention; Figure 4 This is a schematic diagram of the internal structure of the welding equipment cabin of the present invention; Figure 5 This is a schematic diagram of the peripheral structure of the electric slide rail of the present invention; Figure 6 This is an enlarged schematic diagram of the peripheral structure of the electric slide rail of the present invention; Figure 7 Schematic diagram of the cold flow device of the present invention; Figure 8 This is a schematic diagram of the cold flow device of the present invention from the right side perspective; Figure 9 Schematic diagram of the impact device of the present invention; Figure 10 It is a schematic cross-sectional view of the impact device of the present invention.

[0018] In the figure: 1. Hyperbaric chamber; 2. Water tank; 3. Welding equipment compartment; 4. Open welding cabin fitting surface; 5. Welding operation compartment; 6. Watertight door; 7. Hydraulic magnetic device; 8. Watertight door mechanical control device; 9. Electric slide rail; 10. U-shaped frame; 11. Corrugated plate; 12. L-shaped plate; 13. Curved plate; 14. Screw; 15. Spoiler; 16. Limiting plate; 17. Cold flow device; 171. Vertical plate; 172. Round wheel; 173. Cooling mechanism; 174. Trapezoidal plate; 175. Fixed plate; 176. Cross bar; 177. Turning plate; 178. U-shaped plate; 18. Impact device; 181. Transmission plate; 182. Rotating rod; 183. Cam; 184. Impact frame; 185. Friction roller; 186. Pull plate; 187. Rounded corner plate; 188. Telescopic protrusion. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figures 1-10 , One embodiment of the present invention is: an underwater high-pressure sealing door test system, comprising a high-pressure chamber 1, a water tank 2 is provided inside the high-pressure chamber 1, an electric slide rail 9 is fixedly installed at the bottom edge of the inner wall of the water tank 2, a U-shaped frame 10 is slidably installed inside the electric slide rail 9, and a resistance block is fixedly installed on the outer wall of the U-shaped frame 10, a wave plate 11 is fixedly installed inside the U-shaped frame 10, a cold flow device 17 for cooling is provided on the periphery of the wave plate 11, and an impact device 18 for detecting the stability of the equipment is provided on the right side of the cold flow device 17, an L-shaped plate 12 is slidably installed on the left side of the inner wall of the water tank 2 through a spring, an arc plate 13 is fixedly installed on the side of the L-shaped plate 12 close to the electric slide rail 9, and a screw rod 14 is rotatably installed on the side of the L-shaped plate 12 away from the electric slide rail 9, and a few interference flow plates 15 are equidistantly and fixedly installed on the outer wall of the screw rod 14, a limit plate 16 is provided at the left edge of the inner wall of the water tank 2, and one end of the front side of the screw rod 14 passes through and is movably installed inside the limit plate 16.

[0021] The high-pressure chamber 1 controls its internal pressure through external equipment. A water injection mechanism is provided on the right side of the high-pressure chamber 1. The water tank 2 is connected to the water injection mechanism. A welding equipment cabin 3 is provided inside the water tank 2. The welding equipment cabin 3 conducts a series of experiments inside the water tank 2. An open welding cabin fitting surface 4 is provided at the bottom of the welding equipment cabin 3. The bottom of the open welding cabin fitting surface 4 is in contact with the bottom of the inner wall of the water tank 2. A welding operation cabin 5 is provided between the inside of the open welding cabin fitting surface 4 and the bottom of the welding equipment cabin 3. A watertight door 6 is provided inside the welding operation cabin 5, and the sealing of the equipment is detected by checking whether the watertight door 6 is leaking. Several hydraulic magnetic devices 7 are equidistantly provided on the outer wall of the welding equipment cabin 3. A watertight door mechanical control device 8 is provided inside the welding equipment cabin 3, and the telescopic end of the watertight door mechanical control device 8 is fixedly connected to the watertight door 6.

[0022] Therefore, the underwater high-pressure sealing door test system and test method can be widely used in the early test and verification stage of deep-sealing equipment. Through comprehensive testing, the feasibility and reliability of deep-sealing equipment can be verified in the design stage, which is of great significance to the design and development of deep-sea equipment.

[0023] The wave plate 11 disturbs the water flow inside the water tank 2 to simulate the underwater fluctuating water flow. The L-shaped plate 12 relies on the spring force to achieve horizontal reset. The arc surface of the arc plate 13 is located on the movement trajectory of the resistance block. The outer wall of the screw rod 14 is a non-self-locking reciprocating spiral groove. The spoiler 15 disturbs the water source below the water tank 2.

[0024] The horizontal disturbance of the wave plate 11 causes the water source in the water tank 2 to quickly and reciprocally impact the experimental equipment, avoiding the sealing characteristics and opening and closing operation performance of the watertight door 6 being tested under static water flow, making the experimental environment more closely aligned with the underwater environment and reducing the limitations of the test results; the revolution of the spoiler 15 effectively expands the flow direction of the water source in the experimental equipment, and the lower-level circulating water source continuously flushes the outer wall of the open welding cabin fitting surface 4. During this period, the requirements for the fitting and sealing between the open welding cabin fitting surface 4 and the bottom of the inner wall of the water tank 2 are improved.

[0025] When in use, the water tank 2 and the welding cabin model are placed in the high-pressure cabin 1, the water tank 2 is placed horizontally at the bottom of the high-pressure cabin 1, and the welding equipment cabin 3 is placed with the fitting surface facing down in the water tank 2; the high-pressure cabin 1 is pressurized to increase the pressure in the cabin to 2.9 MPa; the hydraulic magnetic device 7 is adjusted to tightly fit the fitting surface 4 of the open welding cabin with the bottom of the water tank 2 until the hydraulic cylinder reaches the design value; water is poured into the water tank 2 so that the water surface is about 0.2 m above the adsorption surface, and the high-pressure cabin 1 is continued to be pressurized to reach a pressure value of 3 MPa, and the pressure is stabilized for 1 hour. The pressure value changes inside and outside the welding cabin are observed by the internal pressure sensor of the welding equipment cabin 3, and the water seepage is observed by the camera arranged in the welding equipment cabin 3. The standard is that the hydraulic magnetic device 7 can normally adsorb and detach and stabilize the pressure for 1 hour in the test, and the pressure change in the cabin is less than 0.01 MPa and the water level change is less than 1 cm. In the subsequent high-pressure functional test of the watertight door 6, the watertight door 6 of the welding equipment cabin 3 was opened, the welding equipment cabin 3 was placed in the high-pressure cabin 1, and the high-pressure cabin 1 was pressurized to 3.3 MPa. The watertight door 6 was opened and closed continuously 30 times. The high-pressure cabin 1 was depressurized until the pressure reached 2.9 MPa, and the watertight door 6 was closed. The welding equipment cabin 3 was pressurized to 3 MPa, the pressure was maintained for 1 hour, and the pressure difference between the inside and outside of the watertight door 6 was measured. The high-pressure cabin 1 was pressurized to 3.1 MPa, the pressure was maintained for 1 hour, and the pressure difference between the inside and outside of the watertight door 6 was measured. The standard was that the watertight door 6 could open and close normally 30 times under high-pressure conditions, and the pressure difference between the inside and outside of the watertight door 6 was reduced to no more than 0.01 MPa after stabilizing for 1 hour. Therefore, the underwater high-pressure sealing door test system and test method can be widely used in the early test and verification stage of deep-sealing equipment. Through comprehensive testing, the feasibility and reliability of deep-sealing equipment can be verified in the design stage, which is of great significance to the design and development of deep-sea equipment.

[0026] When it is necessary to conduct a dynamic water flow test on the equipment, the electric slide rail 9 is started, and the electric slide rail 9 drives the U-shaped frame 10 to slide back and forth horizontally inside itself, and the U-shaped frame 10 drives the wave plate 11 to move synchronously. The wave plate 11 disturbs the water source inside the water tank 2 through its own wave surface. The water source disturbed by the wave plate 11 flows toward the welding equipment cabin 3 and the open welding cabin fitting surface 4 at a faster flow rate, and so on. When the U-shaped frame 10 moves horizontally, it drives the resistance block to contact the arc surface of the arc plate 13, and under the resistance of the resistance block, the arc plate 13 is prompted to push L The L-shaped plate 12 slides horizontally along the left side of the inner wall of the water tank 2. When the contact plate is freed from the contact with the arc-shaped plate 13, the L-shaped plate 12 is reset by the spring force, and this is repeated repeatedly. When the L-shaped plate 12 moves horizontally, it drives the screw rod 14 to move synchronously. The non-self-locking spiral groove of the screw rod 14 is limited by the limit plate 16, which prompts the screw rod 14 to generate a rotation force during the movement. At this time, the screw rod 14 drives the spoiler 15 to revolve, and the spoiler 15 revolves and disturbs the water flow below the inside of the water tank 2, prompting the water source to flow mainly to the lower half of the experimental equipment.

[0027] According to the above embodiment, the horizontal disturbance of the wave plate 11 causes the water source of the water tank 2 to quickly and reciprocally impact the experimental equipment, thereby avoiding the sealing characteristics and opening and closing operation performance of the watertight door 6 being tested under static water flow, making the experimental environment more closely aligned with the underwater environment, and reducing the limitations of the test results; through the revolution of the spoiler 15, the flow direction of the water source of the experimental equipment is effectively expanded, and the lower-level circulating water source continuously flushes the outer wall of the open welding cabin fitting surface 4. During this period, the requirements for the fitting and sealing between the open welding cabin fitting surface 4 and the bottom of the inner wall of the water tank 2 are improved.

[0028] See also Figures 1-10 , based on the above embodiment, another embodiment of the present invention further includes a cold flow device 17; The cold flow device 17 includes a vertical plate 171, the outer wall of the vertical plate 171 is fixedly installed at the edge of the surface of the L-shaped plate 12, a circular groove is opened at the top of the vertical plate 171, a circular wheel 172 is rotatably installed inside the circular groove of the vertical plate 171, a cooling mechanism 173 is installed on the left side of the inner wall of the water tank 2 through a spring sliding, and a trapezoidal plate 174 is fixedly installed at the bottom of the cooling mechanism 173.

[0029] The bottom of the vertical plate 171 contacts the bottom of the inner wall of the water tank 2, and the cooling mechanism 173 cools the water source inside the water tank 2 to simulate the bottom water condition. The inclined surface of the trapezoidal plate 174 is located on the movement trajectory of the circular wheel 172, and the cooling mechanism 173 relies on the trapezoidal plate 174 to generate an upward movement force.

[0030] Two fixed plates 175 are symmetrically and fixedly installed on the top of the cooling mechanism 173. A cross bar 176 is fixedly installed on the opposite side of the two fixed plates 175. The outer wall of the cross bar 176 is penetrated by a torsion spring and a flip plate 177 is rotatably installed. The flip plate 177 limits the flow direction of the cold air emitted by the cooling mechanism 173 to a certain extent. A U-shaped plate 178 is fixedly installed on the upper left side of the inner wall of the water tank 2, and the bottom of the U-shaped plate 178 is in contact with the top edge of the flip plate 177.

[0031] Through the self-rotational resistance of the circular wheel 172, the cooling range of the cooling mechanism 173 is effectively expanded, that is, the water source around the experimental equipment is continuously cooled to simulate the situation where the actual bottom of the water temperature is lower than the ground. In this early stage, the above-mentioned detection process is repeated to determine whether the detection result has changed to determine the stability of the equipment; through the reciprocating flipping of the flip plate 177, the cold flow emitted by the cooling mechanism 173 is able to cool the water source in a more concentrated manner, thereby improving the cooling rate of the water source around the experimental equipment to a certain extent, shortening the waiting time for experiments at different low temperatures, and improving efficiency.

[0032] When in use, the L-shaped plate 12 drives the vertical plate 171 to move horizontally and reset, and the vertical plate 171 drives the circular wheel 172 to move synchronously. During the horizontal movement of the circular wheel 172, it contacts and rubs with the inclined surface of the trapezoidal plate 174 and generates a force for self-rotation. At this time, the circular wheel 172 moves with the vertical plate 171 and rotates to push the inclined surface of the trapezoidal plate 174, so that the trapezoidal plate 174 generates an upward force. The trapezoidal plate 174 pushes the cooling mechanism 173 to slide upward along the inner wall of the water tank 2, and then the cooling mechanism 173 is reset by the spring elastic force, thereby prompting the cooling mechanism 173 to perform Perform comprehensive cooling treatment; the cooling mechanism 173 drives the fixed plate 175 to move upward and reset, the fixed plate 175 drives the cross bar 176 to move synchronously, and the cross bar 176 drives the flip plate 177 to move upward and contact the bottom of the U-shaped plate 178. When the flip plate 177 is limited by the U-shaped plate 178, the hinge shaft between itself and the cross bar 176 generates a rotational force, and the flip plate 177 flips downward in an arc trajectory with the hinge shaft as the axis. At this time, the flip plate 177 blocks and guides the cold flow emitted by the cooling mechanism 173 in an inclined posture.

[0033] According to the above embodiment, the cooling range of the cooling mechanism 173 is effectively expanded through the rotational resistance of the circular wheel 172, that is, the water source around the experimental equipment is continuously cooled to simulate the situation where the actual bottom of the water temperature is lower than the ground. In this early stage, the above detection process is repeated to determine whether the detection result has changed to determine the stability of the equipment; through the reciprocating flipping of the flip plate 177, the cold flow emitted by the cooling mechanism 173 is able to cool the water source in a more concentrated manner, thereby improving the cooling rate of the water source around the experimental equipment to a certain extent, shortening the waiting time for experiments at different low temperatures, and improving efficiency.

[0034] See also Figures 1-10 , based on the above embodiment, another embodiment of the present invention further includes an impact device 18; The impact device 18 includes a transmission plate 181, the back of the left end of the transmission plate 181 is fixedly mounted on the front of the fixed plate 175, a rotating rod 182 is rotatably mounted at the bottom corner of the inner wall of the water tank 2, and a non-self-locking spiral groove is provided on the top outer wall of the rotating rod 182. The transmission plate 181 moves inside and penetrates the outer wall of the rotating rod 182, and a cam 183 is penetrated and fixedly mounted on the outer wall of the bottom end of the rotating rod 182. An impact frame 184 is slidably mounted on the bottom of the inner wall of the water tank 2 through a spring, and the outer wall of the impact frame 184 is in contact with the surface of the hydraulic magnetic device 7. A friction roller 185 is rotatably mounted inside the impact frame 184, and the outer wall of the friction roller 185 is in contact with the arc surface of the cam 183.

[0035] A pull plate 186 is fixedly installed on the side of the impact frame 184 away from the cam 183, and several rounded plates 187 are symmetrically and fixedly installed inside the pull plate 186. A telescopic protrusion 188 is fixedly installed on the front side of the inner wall of the water tank 2, and the telescopic protrusion 188 has a built-in spring. The arc surface of the telescopic end of the telescopic protrusion 188 is located on the movement trajectory of the rounded plate 187.

[0036] Through the indirect sliding resistance of the impact frame 184, the hydraulic magnetic device 7 is prompted to effectively increase the external interference force under the experimental premise of dynamic water flow, so as to detect the magnetic strength of the hydraulic magnetic device 7, and avoid falling off due to insufficient suction force in actual use, resulting in displacement or tilting of the welding equipment cabin 3 and the open welding cabin fitting surface 4, thereby ensuring safety for underwater use; the reciprocating impact of the telescopic protrusion 188 causes the hydraulic magnetic device 7 to vibrate slightly, thereby detecting whether the magnetic data of the hydraulic magnetic device 7 to the bottom of the inner wall of the water tank 2 changes significantly under the interference of vibration when the experimental equipment generates slight vibration due to operation.

[0037] When in use, the fixed plate 175 drives the transmission plate 181 to move synchronously when it moves upward. When the transmission plate 181 moves upward, it drives the non-self-locking spiral groove on the outer wall of the rotating rod 182 to generate a rotating force. At this time, the rotating rod 182 drives the cam 183 to revolve along the bottom of the inner wall of the water tank 2. When the cam 183 revolves, the friction roller 185 relies on the spring force between the impact frame 184 and the inner wall of the water tank 2 to cause the outer wall of the friction roller 185 to always fit and rub the outer wall of the cam 183. At this time, the friction roller 185 rotates inside the impact frame 184, so that the impact frame 184 repeatedly rotates during the movement of the cam 183. Movement away from and against the outer wall of the hydraulic magnetic device 7; when the impact frame 184 drives the pull plate 186 to move horizontally, the pull plate 186 drives the rounded plate 187 to move synchronously, and the symmetrically distributed rounded plates 187 move horizontally, they will contact and conflict with the convex arc surface of the outer wall of the telescopic end of the telescopic protrusion 188. At this time, the telescopic end of the telescopic protrusion 188 will generate a contraction force. When the rounded plate 187 passes over the convex arc surface of the telescopic protrusion 188, the telescopic end of the telescopic protrusion 188 is released from the contraction and storage state through the spring force, and the telescopic end of the telescopic protrusion 188 will suddenly hit the surface of the hydraulic magnetic device 7 and reciprocate like this.

[0038] According to the above embodiment, through the indirect sliding resistance of the impact frame 184, the hydraulic magnetic device 7 is prompted to effectively increase the external interference force under the experimental premise of dynamic water flow, so as to detect the magnetic strength of the hydraulic magnetic device 7, and avoid falling off due to insufficient suction force in actual use, resulting in displacement or tilting of the welding equipment cabin 3 and the open welding cabin fitting surface 4, thereby ensuring underwater safety; the reciprocating impact of the telescopic protrusion 188 causes the hydraulic magnetic device 7 to vibrate slightly, thereby detecting whether the magnetic data of the hydraulic magnetic device 7 to the bottom of the inner wall of the water tank 2 changes significantly under the interference of the vibration when the experimental equipment generates slight vibration due to operation.

[0039] A method for testing an underwater high-pressure sealing door test system comprises the following steps: S1: In the high-pressure functional test of the watertight door 6, the watertight door 6 of the welding equipment cabin 3 is opened, the welding equipment cabin 3 is placed in the high-pressure cabin 1, and the high-pressure cabin 1 is pressurized to 3.3 MPa; S2: Continuously open and close the watertight door 6 30 times; depressurize the hyperbaric chamber 1 until it reaches 2.9 MPa, and close the watertight door 6; pressurize the welding equipment chamber 3 to 3 MPa, maintain the pressure for 1 hour, and measure the pressure difference between the inside and outside of the watertight door 6; S3: Increase the pressure of the hyperbaric chamber 1 to 3.1 MPa, maintain the pressure for 1 hour, and measure the pressure difference between the inside and outside of the watertight door 6; S4: The standard is that the watertight door 6 can open and close normally 30 times under high pressure environment, and the pressure difference between the inside and outside of the watertight door 6 is reduced to no more than 0.01 MPa for 1 hour.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An underwater high-pressure sealing door test system, comprising a high-pressure chamber (1), characterized in that: A water tank (2) is provided inside the high-pressure chamber (1), an electric slide rail (9) is fixedly installed at the bottom edge of the inner wall of the water tank (2), a U-shaped frame (10) is slidably installed inside the electric slide rail (9), a resistance block is fixedly installed on the outer wall of the U-shaped frame (10), a wave plate (11) is fixedly installed inside the U-shaped frame (10), a cold flow device (17) for cooling is provided on the periphery of the wave plate (11), and an impact device (18) for detecting the stability of the equipment is provided on the right side of the cold flow device (17). An L-shaped plate (12) is installed on the left side of the inner wall of the water tank (2) through a spring sliding, and an arc plate (13) is fixedly installed on the side of the L-shaped plate (12) close to the electric slide rail (9), and a screw rod (14) is rotatably installed on the side of the L-shaped plate (12) away from the electric slide rail (9), and a plurality of interfering flow plates (15) are fixedly installed at equal distances on the outer wall of the screw rod (14). A limit plate (16) is provided at the left edge of the inner wall of the water tank (2), and one front end of the screw rod (14) passes through and is movably installed inside the limit plate (16).

2. The underwater high-pressure sealing door test system according to claim 1, characterized in that: The high-pressure chamber (1) controls its internal pressure through an external device. A water injection mechanism is provided on the right side of the high-pressure chamber (1). The water tank (2) is connected to the water injection mechanism. A welding equipment chamber (3) is provided inside the water tank (2). The welding equipment chamber (3) performs a series of experiments inside the water tank (2). An open welding chamber fitting surface (4) is provided at the bottom of the welding equipment chamber (3). The bottom of the open welding chamber fitting surface (4) contacts the bottom of the inner wall of the water tank (2). A welding operation chamber (5) is provided between the inside of the open welding chamber fitting surface (4) and the bottom of the welding equipment chamber (3). A watertight door (6) is provided inside the welding operation chamber (5), and the sealing of the equipment is detected by checking whether the watertight door (6) is leaking. A plurality of hydraulic magnetic devices (7) are equidistantly provided on the outer wall of the welding equipment chamber (3). A watertight door mechanical control device (8) is provided inside the welding equipment chamber (3), and the telescopic end of the watertight door mechanical control device (8) is fixedly connected to the watertight door (6).

3. The underwater high-pressure sealing door test system according to claim 2, characterized in that: The wave plate (11) disturbs the water flow inside the water tank (2) to simulate the underwater fluctuating water flow, the L-shaped plate (12) relies on the elastic force of the spring to achieve horizontal reset, the arc surface of the arc plate (13) is located on the movement trajectory of the resistance block, the outer wall of the screw rod (14) is a non-self-locking reciprocating spiral groove, and the spoiler (15) disturbs the water source below the inside of the water tank (2).

4. The underwater high-pressure sealing door test system according to claim 3, characterized in that: The cold flow device (17) comprises a vertical plate (171), the outer wall of the vertical plate (171) is fixedly mounted on the edge of the surface of the L-shaped plate (12), a circular groove is provided at the top of the vertical plate (171), a circular wheel (172) is rotatably mounted inside the circular groove of the vertical plate (171), a cooling mechanism (173) is slidably mounted on the left side of the inner wall of the water tank (2) via a spring, and a trapezoidal plate (174) is fixedly mounted on the bottom of the cooling mechanism (173).

5. The underwater high-pressure sealing door testing system according to claim 4, characterized in that: The bottom of the vertical plate (171) contacts the bottom of the inner wall of the water tank (2), and the cooling mechanism (173) cools the water source inside the water tank (2) to simulate the underwater condition. The inclined surface of the trapezoidal plate (174) is located on the motion track of the circular wheel (172), and the cooling mechanism (173) relies on the trapezoidal plate (174) to generate an upward motion force.

6. The underwater high-pressure sealing door testing system according to claim 5, characterized in that: Two fixed plates (175) are symmetrically and fixedly installed on the top of the cooling mechanism (173), and a cross bar (176) is fixedly installed on the opposite side of the two fixed plates (175). The outer wall of the cross bar (176) is penetrated by a torsion spring and a flip plate (177) is rotatably installed. The flip plate (177) limits the flow direction of the cold air emitted by the cooling mechanism (173). A U-shaped plate (178) is fixedly installed on the upper left side of the inner wall of the water tank (2), and the bottom of the U-shaped plate (178) is in contact with the top edge of the flip plate (177).

7. The underwater high-pressure sealing door testing system according to claim 6, characterized in that: The impact device (18) comprises a transmission plate (181), the back side of the left end of the transmission plate (181) is fixedly mounted on the front side of the fixed plate (175), a rotating rod (182) is rotatably mounted at the bottom corner of the inner wall of the water tank (2), a non-self-locking spiral groove is provided on the top outer wall of the rotating rod (182), the inner portion of the transmission plate (181) moves through the outer wall of the rotating rod (182), a cam (183) is penetrated and fixedly mounted on the outer wall of the bottom end of the rotating rod (182), an impact frame (184) is slidably mounted on the bottom of the inner wall of the water tank (2) via a spring, the outer wall of the impact frame (184) contacts the surface of the hydraulic magnetic device (7), a friction roller (185) is rotatably mounted on the inner portion of the impact frame (184), and the outer wall of the friction roller (185) contacts the arc surface of the cam (183).

8. The underwater high-pressure sealing door testing system according to claim 7, characterized in that: A pull plate (186) is fixedly installed on the side of the impact frame (184) away from the cam (183), and a plurality of rounded corner plates (187) are symmetrically and fixedly installed inside the pull plate (186). A telescopic protrusion (188) is fixedly installed on the front side of the inner wall of the water tank (2), and the telescopic protrusion (188) has a spring built in. The arc surface of the telescopic end of the telescopic protrusion (188) is located on the movement trajectory of the rounded corner plate (187).

9. A method for testing an underwater high-pressure sealing door test system, using the underwater high-pressure sealing door test system according to claim 8, characterized in that: The following steps are involved: S1: In the high-pressure functional test of the watertight door (6), the watertight door (6) of the welding equipment cabin (3) is opened, the welding equipment cabin (3) is placed in the high-pressure cabin (1), and the high-pressure cabin (1) is pressurized to 3.3 MPa; S2: Continuously operate the watertight door (6) to open and close 30 times; depressurize the high-pressure chamber (1) until the pressure reaches 2.9 MPa, and close the watertight door (6); pressurize the welding equipment chamber (3) to 3 MPa, maintain the pressure for 1 hour, and measure the pressure difference between the inside and outside of the watertight door (6); S3: pressurize the hyperbaric chamber (1) to 3.1 MPa, maintain the pressure for 1 hour, and measure the pressure difference between the inside and outside of the watertight door (6); S4: The standard is that the watertight door (6) can be opened and closed normally 30 times under high pressure environment, and the pressure difference between the inside and outside of the watertight door (6) is reduced to no more than 0.01MPa under the pressure stabilization for 1 hour.

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