Pendulum-type deep-sea collision test device for horizontal pressure cylinders

Abstract

The present invention relates to a pendulum-type deep-sea collision test device for a horizontal pressure cylinder, comprising a horizontally arranged pressure cylinder, a test model being fixed to the front of the inner bottom surface of the pressure cylinder via a fixing seat, and a collision mechanism being installed at the rear of the inner bottom surface of the pressure cylinder; the structure of the collision mechanism is as follows: comprising a front frame and a rear frame spaced apart from each other, the front frame and the rear frame being connected and fixed to form an integral frame via a crossbeam; a swing arm being rotatably installed at the middle of the front frame, a heavy ball being fixed at the bottom end of the swing arm; a pressure-resistant electromagnetic suction component being installed at the middle of the rear frame; the pressure-resistant electromagnetic suction component comprising a pressure-resistant tank body, an electromagnetic suction cup being accommodated inside the pressure-resistant tank body, the electromagnetic suction cup being connected to a power supply via a cable, generating magnetic force when the electromagnetic suction cup is energized, and disappearing the magnetic force when the power is lost; a limit plate being installed on the bottom surface of the pressure-resistant tank body; the heavy ball at the end of the swing arm swings backward and upward and is adsorbed by the pressure-resistant electromagnetic suction component in the energized state, the heavy ball being fixed on the inner side of the limit plate, and swinging forward to collide with the test model after the power is lost.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure collision testing, in particular to a pendulum-type deep-sea collision testing device for a horizontal pressure cylinder. Background Art

[0002] Due to the harsh ocean environment, underwater collisions between vehicles occur frequently. Compared to surface ships, underwater vehicles have less reserve buoyancy. When they encounter an underwater collision, the combined effects of deepwater pressure and impact loads are more likely to cause structural damage, threatening the lives of crew members and potentially leading to secondary disasters.

[0003] In the existing technology, due to the limitations of test facilities and test costs, the research on structural collision problems in deep-sea high-pressure environments mainly relies on numerical simulation methods. The research progress found in the literature has stopped at software simulation and lacks the necessary experimental research and verification.

[0004] Major domestic research institutions have built a variety of deep-sea environment simulation devices, or pressure cylinders, in various sizes and types. Pressure cylinders are categorized as vertical or horizontal based on their installation layout, but their primary testing scope is hydrostatic pressure testing. Summary of the Invention

[0005] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a rationally structured pendulum-type deep-sea collision test device for horizontal pressure cylinders, which is used to carry out the structural response of pressure-resistant structures under collision impact loads under the effect of hydrostatic pressure, study the strength and stability of the structure, and provide a powerful test verification means for the navigation safety of underwater vehicles.

[0006] The technical solutions adopted in the present invention are as follows:

[0007] A pendulum-type deep-sea collision test device for a horizontal pressure cylinder comprises a horizontally arranged pressure cylinder, a test model is fixed to the front of the inner bottom surface of the pressure cylinder via a fixing seat, and a collision mechanism is installed at the rear of the inner bottom surface of the pressure cylinder;

[0008] The collision mechanism comprises a front frame and a rear frame spaced apart from each other, the front frame and the rear frame being connected and fixed to form an integral frame via a crossbeam; a swing arm is rotatably mounted in the middle of the front frame, a heavy ball is fixed at the bottom of the swing arm; a pressure-resistant electromagnetic suction assembly is mounted in the middle of the rear frame;

[0009] The pressure-resistant electromagnetic suction assembly includes a pressure-resistant tank body, an electromagnetic suction cup is housed inside the pressure-resistant tank body, and the electromagnetic suction cup is connected to a power supply via a cable. When the electromagnetic suction cup is powered, it generates magnetic force, and when the power is off, the magnetic force disappears. A limit plate is installed on the bottom surface of the pressure-resistant tank body;

[0010] The heavy ball at the end of the swing rod swings backward and upward and is adsorbed by the pressure-resistant electromagnetic suction component in the energized state. The heavy ball is fixed on the inner side of the limit plate. After the power is lost, the heavy ball swings forward and hits the test model.

[0011] As a further improvement of the above technical solution:

[0012] The pressure-resistant tank body is a container with an opening facing upward. The upper open end is sealed with a flange end cover via a flange structure to form a closed container. The electromagnetic suction cup is accommodated inside the closed container; a watertight joint for the cable to pass out is installed on the flange end cover.

[0013] A sealing member is press-fitted between the interface between the flange end cover and the pressure-resistant tank body, and the sealing member is arranged circumferentially around the opening of the pressure-resistant tank body.

[0014] The flange edge of the flange end cover is in contact with the flange structure on the top of the pressure-resistant tank body and is fixed to each other via fasteners; a lifting lug is extended upward from the top surface of the flange end cover.

[0015] The pressure-resistant tank body is a cylindrical container with an opening facing upward. The outer wall of the pressure-resistant tank body is provided with annular ribs along the circumference, and a plurality of groups of annular ribs are arranged at intervals along the axial direction of the pressure-resistant tank body.

[0016] A magnetic plate is fixedly mounted on the bottom surface of the pressure-resistant tank body via a grid member, and a limiting plate is mounted on the bottom surface of the magnetic plate.

[0017] The limiting plates are arranged in plurality along the circumferential direction at intervals. The inner side surfaces of each limiting plate are all configured as inclined structures. The inner sides of the plurality of limiting plates together form a conical structure with the opening facing downward, and the heavy ball is in contact with and tangent to the inner side surface of the conical structure.

[0018] The front frame and the rear frame are both inverted U-shaped structures, and cross beams are installed between the two ends of the horizontal arms of the front frame and the rear frame and between the middle parts of the vertical arms; the heavy ball is located below the middle part of the horizontal arm of the front frame, and the pressure-resistant electromagnetic suction assembly is located below the middle part of the horizontal arm of the rear frame; the heavy ball and the pressure-resistant electromagnetic suction assembly are located in the same vertical plane.

[0019] A fixing frame is installed in the middle of the bottom surface of the horizontal arm of the front frame, and a horizontal axis with an axial direction arranged left and right is provided at the lower part of the fixing frame. The horizontal axis is rotatably installed with the end of the rocker arm via a bearing.

[0020] The cross section of the rocker rod is a teardrop-shaped structure, with the pointed end of the teardrop-shaped structure facing forward.

[0021] The beneficial effects of the present invention are as follows:

[0022] The present invention has a compact and reasonable structure and is easy to operate. When hydrostatic pressure is applied, the heavy ball at the end of the pendulum swings backward and upward and is attracted by the pressure-resistant electromagnetic suction component in the energized state. The heavy ball is fixed on the inner side of the limit plate. After power is lost, the heavy ball swings forward and hits the test model, thereby conducting a structural response test of the pressure-resistant structure under the impact load under the effect of hydrostatic pressure, studying the strength and stability of the structure, and providing a powerful test verification method for the navigation safety of underwater vehicles.

[0023] The pressure-resistant electromagnetic suction component can disconnect the heavy ball from the power supply, effectively realizing the collision simulation test under hydrostatic pressure, and realizing the corresponding research on the heavy ball collision structure of underwater engineering structures, with high accuracy and good test effect.

[0024] During the collision test, the strain, displacement and other sensors placed on the test model can be used to accurately collect test parameters and obtain precise structural deformation values. Of course, a rough evaluation can also be made directly based on the collision morphology.

[0025] The pressure-resistant electromagnetic suction component realizes power-off separation in high-pressure deep-sea environments, is reusable, durable, and can be quickly disassembled and assembled for maintenance, making it highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the collision mechanism of the present invention.

[0028] Figure 3 This is a schematic diagram of the installation of the pressure-resistant electromagnetic suction component on the rear frame of the present invention.

[0029] Figure 4 It is a schematic structural diagram of the pressure-resistant electromagnetic suction component of the present invention.

[0030] Figure 5 It is a cross-sectional view of the pressure-resistant electromagnetic suction component of the present invention.

[0031] Figure 6 This is a schematic diagram of the installation of the heavy ball on the front frame of the present invention.

[0032] Figure 7 It is a schematic diagram of the installation of the heavy ball and the pendulum rod of the present invention.

[0033] Figure 8 Schematic diagram of the cross section of the rocker arm of the present invention.

[0034] Including: 1. Pressure cylinder; 2. Fixing seat; 3. Test model; 4. Sensor assembly; 5. Front frame; 6. Weight ball; 7. Crossbeam; 8. Rear frame; 9. Pressure-resistant electromagnetic suction assembly; 10. Power supply;

[0035] 50. Fixed frame; 51. Horizontal axis; 52. Bearing;

[0036] 60, pendulum; 601, pointed head;

[0037] 80. Rings;

[0038] 90. Ring rib; 91. Watertight joint; 92. Lifting lug; 93. Flange end cover; 94. Seal; 95. Pressure tank body; 96. Electromagnetic suction cup; 97. Grille; 98. Magnetic plate; 99. Limit plate. DETAILED DESCRIPTION

[0039] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0040] like Figure 1 As shown, the pendulum-type deep-sea collision test device for a horizontal pressure cylinder of this embodiment includes a horizontally arranged pressure cylinder 1, a test model 3 is fixed to the front of the inner bottom surface of the pressure cylinder 1 via a fixing seat 2, and a collision mechanism is installed at the rear of the inner bottom surface of the pressure cylinder 1;

[0041] like Figure 2 and Figure 3 As shown, the structure of the collision mechanism is as follows: it includes a front frame 5 and a rear frame 8 arranged in a front-to-back manner, and the front frame 5 and the rear frame 8 are connected and fixed to form an integral frame via a crossbeam 7; a swing rod 60 is rotatably mounted in the middle of the front frame 5, and a heavy ball 6 is fixedly mounted at the bottom end of the swing rod 60; a pressure-resistant electromagnetic suction component 9 is installed in the middle of the rear frame 8;

[0042] like Figure 4 and Figure 5 As shown, the pressure-resistant electromagnetic suction assembly 9 includes a pressure-resistant tank body 95, and an electromagnetic suction cup 96 is accommodated inside the pressure-resistant tank body 95. The electromagnetic suction cup 96 is connected to the power supply 10 via a cable. The electromagnetic suction cup 96 generates magnetic force when it is energized and disappears when it is de-energized. A limit plate 99 is installed on the bottom surface of the pressure-resistant tank body 95;

[0043] The heavy ball 6 at the end of the pendulum rod 60 swings backward and upward and is adsorbed by the pressure-resistant electromagnetic suction component 9 in the energized state. The heavy ball 6 is fixed on the inner side of the limit plate 99. After the power is lost, the heavy ball 6 swings forward and hits the test model 3, thereby carrying out the structural response test of the pressure-resistant structure under the hydrostatic pressure effect under the collision impact load under the state of loading hydrostatic pressure.

[0044] Through the power-off separation function of the pressure-resistant electromagnetic suction component 9 for the heavy ball 6, the collision simulation test under the hydrostatic pressure state is effectively realized, and the corresponding research on the collision structure of the heavy ball 6 of the underwater engineering structure is realized with high accuracy and good test effect.

[0045] The pressure-resistant electromagnetic suction component 9 realizes power-off separation in a high-pressure deep-sea environment, is reusable, durable, and can be quickly disassembled and assembled for maintenance, which is very practical.

[0046] The pressure-resistant tank body 95 is a container with an upward opening. The upper open end is sealed with a flange end cover 93 through a flange structure to form a closed container. The electromagnetic suction cup 96 is accommodated inside the closed container; a watertight joint 91 for the cable to pass out is installed on the flange end cover 93. The cable passes through the watertight joint 91 and passes through the pressure-resistant electromagnetic suction assembly 9 and then leads out of the pressure cylinder 1, and is connected to the power supply 10 outside the pressure cylinder 1 to control the power on or off of the electromagnetic suction cup 96.

[0047] A seal 94 is press-fitted between the interface between the flange end cover 93 and the pressure-resistant tank body 95 . The seal 94 is arranged circumferentially around the opening of the pressure-resistant tank body 95 to achieve a sealed fit between the two.

[0048] The flange edge of the flange end cover 93 fits into the flange structure on the top of the pressure-resistant tank body 95 and is fixed to each other via fasteners, making the pressure-resistant electromagnetic suction assembly 9 easy to disassemble and maintain; a lifting ear 92 extends upward from the top surface of the flange end cover 93 to facilitate the lifting of the flange end cover 93.

[0049] In this embodiment, a hanging ring 80 is extended downward from the center of the rear frame 8, a hanging cable is laid through the hanging ear 92 on the top surface of the pressure-resistant electromagnetic suction component 9, and finally the hanging cable is hung on the hanging ring 80 to achieve rapid installation of the pressure-resistant electromagnetic suction component 9 on the rear frame 8.

[0050] The pressure-resistant tank body 95 is a cylindrical container with an opening facing upward. Annular ribs 90 are circumferentially arranged on the outer wall of the pressure-resistant tank body 95 . Multiple groups of the annular ribs 90 are spaced apart along the axial direction of the pressure-resistant tank body 95 .

[0051] A magnetic plate 98 is fixedly mounted on the bottom surface of the pressure-resistant tank body 95 via a grid member 97 , and a limiting plate 99 is mounted on the bottom surface of the magnetic plate 98 .

[0052] In this embodiment, the grille member 97 may be a cross-shaped reinforcing rib structure for reinforcing the overall structure.

[0053] There are multiple limit plates 99 arranged at intervals along the circumference, and the inner side surfaces of a single limit plate 99 are all set to be inclined structures. The inner sides of multiple limit plates 99 together constitute a conical structure with the opening facing downward, and the heavy ball 6 is in contact with the inner side surface of the conical structure; thus, through the arrangement of multiple limit plates 99, the heavy ball 6 is jointly limited to the center position of the bottom surface of the pressure-resistant electromagnetic suction component 9, and the shaking of the heavy ball 6 is effectively prevented, thereby effectively ensuring the smooth progress of the test.

[0054] The front frame 5 and the rear frame 8 are both inverted U-shaped structures, and a crossbeam 7 is installed between the two ends of the horizontal arms of the front frame 5 and the rear frame 8 and between the middle parts of the vertical arms; the heavy ball 6 is located below the middle part of the horizontal arm of the front frame 5, and the pressure-resistant electromagnetic suction component 9 is located below the middle part of the horizontal arm of the rear frame 8; the heavy ball 6 and the pressure-resistant electromagnetic suction component 9 are located in the same vertical plane, so that the heavy ball 6 swings in the vertical plane.

[0055] like Figure 6 As shown, a fixing frame 50 is installed in the middle of the bottom surface of the horizontal arm of the front frame 5, and a horizontal shaft 51 is provided at the lower part of the fixing frame 50. The horizontal shaft 51 is rotatably installed with the end of the rocker 60 via a bearing 52, as shown in FIG. Figure 7 As shown, the smoothness and reliability of the forward swing of the heavy ball 6 relative to the front frame 5 during the collision test are effectively guaranteed, and the swinging trajectory of the heavy ball 6 is effectively guaranteed by the swing rod 60.

[0056] The cross section of the rocker 60 is a teardrop-shaped structure. Figure 8 As shown, the pointed portion 601 of the teardrop-shaped structure faces forward, thereby effectively reducing the swing resistance of the heavy ball 6 under high-pressure static water.

[0057] In this embodiment, a screw portion can be set on the bottom surface of the rocker arm 60, and a through hole along the diameter direction is opened on the heavy ball 6. After the screw portion passes through the through hole, a nut is installed to lock it, thereby realizing the assembly between the rocker arm 60 and the heavy ball 6; disassembly and maintenance are convenient and reliable.

[0058] During the collision test, a sensor assembly 4, including strain sensors, displacement sensors, etc., can be arranged on the test model 3. Through the arrangement of the sensor assembly 4, the test parameters can be accurately collected to obtain the precise structural deformation value. Of course, a rough test evaluation can also be performed directly through the collision shape on the test model 3 after the collision test.

[0059] The test method of the pendulum-type deep-sea collision test device in the present invention is as follows:

[0060] Strain and displacement sensors are placed on the test model 3 and installed in the horizontal pressure cylinder 1. The pendulum-type deep-sea collision test device is moved into the pressure cylinder 1 and placed close to the test model 3 so that the heavy ball 6 can collide with the preset position of the test model 3 when it swings.

[0061] Lead the lead wires of the strain and displacement sensors and the cable of the pressure-resistant electromagnetic suction assembly 9 out of the pressure cylinder 1 and connect them to the strain tester and power supply 10 respectively;

[0062] Turn on the power supply 10 and swing the swing arm 60, so that the heavy ball 6 swings backward and is attracted to the middle of the bottom surface of the pressure-resistant electromagnetic suction component 9;

[0063] The cylinder cover of the pressure cylinder 1 is installed to seal it, and hydrostatic pressure is loaded; when the hydrostatic pressure in the pressure cylinder 1 reaches the target pressure, the switch of the power supply 10 is turned off. As the magnetic force on the electromagnetic suction cup 96 in the pressure-resistant electromagnetic suction assembly 9 disappears, the heavy ball 6 swings with the bearing 52 as the center and the pendulum 60 as the radius, and hits the preset position on the front test model 3, causing the test model 3 to have an impact structural response. The structural strain of the collision is measured by the strain sensor, and the structural deformation of the collision is measured by the displacement sensor, completing the collision test under high-pressure hydrostatic environment.

[0064] The present invention realizes the structural response test of the pressure-resistant structure under the impact load under the hydrostatic pressure effect, which is used to study the strength and stability of the structure and provide a powerful test verification means for the navigation safety of underwater vehicles.

[0065] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any modifications may be made within the scope of protection of the present invention.

Claims

1. A pendulum-type deep-sea collision test device for a horizontal pressure cylinder, comprising a horizontally arranged pressure cylinder (1), characterized in that: The front portion of the inner bottom surface of the pressure cylinder (1) is fixed with a test model (3) via a fixing seat (2), and the rear portion of the inner bottom surface of the pressure cylinder (1) is installed with a collision mechanism; The structure of the collision mechanism is as follows: it comprises a front frame (5) and a rear frame (8) arranged at intervals in front and back, the front frame (5) and the rear frame (8) being connected and fixed to form an integral frame via a crossbeam (7); a swing rod (60) is rotatably mounted in the middle of the front frame (5), and a heavy ball (6) is fixedly mounted at the bottom end of the swing rod (60); a pressure-resistant electromagnetic suction component (9) is mounted in the middle of the rear frame (8); The pressure-resistant electromagnetic suction assembly (9) includes a pressure-resistant tank body (95), an electromagnetic suction cup (96) is housed inside the pressure-resistant tank body (95), and the electromagnetic suction cup (96) is connected to a power source (10) via a cable. The electromagnetic suction cup (96) generates magnetic force when it is energized and disappears when it is de-energized. A limit plate (99) is installed on the bottom surface of the pressure-resistant tank body (95); The heavy ball (6) at the end of the swing rod (60) swings backward and upward and is adsorbed by the pressure-resistant electromagnetic suction component (9) in the energized state. The heavy ball (6) is fixed on the inner side of the limit plate (99). After the power is lost, the heavy ball (6) swings forward and hits the test model (3).

2. The pendulum-type deep-sea collision test device for a horizontal pressure cylinder according to claim 1, characterized in that: The pressure-resistant tank body (95) is a container with an opening facing upwards. The upper open end is sealed with a flange end cover (93) via a flange structure to form a closed container. The electromagnetic suction cup (96) is accommodated inside the closed container. A watertight joint (91) for the cable to pass out is installed on the flange end cover (93).

3. The pendulum-type deep-sea collision test device for a horizontal pressure cylinder according to claim 2, characterized in that: A sealing member (94) is press-fitted between the contact surface of the flange end cover (93) and the pressure-resistant tank body (95), and the sealing member (94) is arranged along the circumferential direction around the opening of the pressure-resistant tank body (95).

4. The pendulum-type deep-sea collision test device for a horizontal pressure vessel according to claim 2, characterized in that: The flange edge of the flange end cover (93) is fitted with the flange structure on the top of the pressure-resistant tank body (95) and fixed to each other via fasteners; a lifting lug (92) extends upward from the top surface of the flange end cover (93).

5. The pendulum-type deep-sea collision test device for a horizontal pressure cylinder according to claim 1, characterized in that: The pressure-resistant tank body (95) is a cylindrical container with an opening facing upward. Annular ribs (90) are provided on the outer wall surface of the pressure-resistant tank body (95) along the circumference. Multiple groups of the annular ribs (90) are arranged at intervals along the axial direction of the pressure-resistant tank body (95).

6. The pendulum-type deep-sea collision test device for a horizontal pressure vessel according to claim 1, characterized in that: A magnetic plate (98) is fixedly mounted on the bottom surface of the pressure-resistant tank body (95) via a grid member (97), and a limiting plate (99) is mounted on the bottom surface of the magnetic plate (98).

7. The pendulum-type deep-sea collision test device for a horizontal pressure vessel according to claim 1, characterized in that: The limiting plates (99) are arranged in plurality along the circumferential direction at intervals. The inner side surfaces of the individual limiting plates (99) are all arranged as inclined structures. The inner sides of the plurality of limiting plates (99) together form a conical structure with the opening facing downwards. The heavy ball (6) is in contact with and tangent to the inner side surface of the conical structure.

8. The pendulum-type deep-sea collision test device for a horizontal pressure vessel according to claim 1, characterized in that: The front frame (5) and the rear frame (8) are both inverted U-shaped structures, and a crossbeam (7) is commonly installed between the ends of the horizontal arms of the front frame (5) and the middle of the vertical arms of the rear frame (8); the heavy ball (6) is located below the middle of the horizontal arm of the front frame (5), and the pressure-resistant electromagnetic suction component (9) is located below the middle of the horizontal arm of the rear frame (8); the heavy ball (6) and the pressure-resistant electromagnetic suction component (9) are located in the same vertical plane.

9. The pendulum-type deep-sea collision test device for a horizontal pressure vessel according to claim 1, characterized in that: A fixing frame (50) is installed in the middle of the bottom surface of the horizontal arm of the front frame (5), and a horizontal axis (51) with an axial direction arranged left and right is provided at the lower part of the fixing frame (50). The horizontal axis (51) is rotatably installed with the end of the rocker (60) via a bearing (52).

10. The pendulum-type deep-sea collision test device for a horizontal pressure vessel according to claim 1, characterized in that: The cross section of the rocker (60) is a teardrop-shaped structure, with the pointed end (601) of the teardrop-shaped structure facing forward.

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