CN-122016235-A - Hole breaking device for double-shell liquid cargo ship model test

CN122016235ACN 122016235 ACN122016235 ACN 122016235ACN-122016235-A

Abstract

The invention discloses a hole breaking device for a model test of a double-shell liquid cargo ship, which comprises a sealing assembly and a driving assembly, wherein the sealing assembly is arranged in a double-shell interlayer of the model and is in transmission connection with the sealing assembly, the sealing assembly consists of an upper sealing plug, a lower sealing plug, a first connecting rod, a second connecting rod and a connecting part, the upper sealing plug, the lower sealing plug, the first connecting rod, the second connecting rod and the connecting part are respectively used for sealing relatively preset holes, the first connecting rod and the second connecting rod are hinged through the connecting part, form an over-center configuration with an included angle of more than 180 degrees in a sealing state, the over-center configuration is limited by mutually matched limiting parts, the upper sealing plug and the lower sealing plug are stably pressed against the preset holes under the elastic action to realize mechanical self-locking sealing, the driving assembly acts on the connecting part through a transmission part to enable the two connecting rods to rotate towards the included angle reducing direction, the self-locking is released, the sealing plugs are synchronously separated from the preset Kong Wancheng hole breaking under the compression condition, the sealing stability and reliable structure can realize controllable synchronous hole breaking, and the device is suitable for the model test of the double-shell liquid cargo ship.

Inventors

XIA ZHIPING
ZHANG ZHEYUAN
ZHU RENQING
ZHANG XINLONG
Ji Renwei
MA SIYUAN
LI XIANGHUI
YANG SONG
GAO ZUOXIANG

Assignees

江苏科技大学

Dates

Publication Date: 20260512
Application Date: 20260304

Claims (10)

1. The hole breaking device for the model test of the double-shell tanker comprises a sealing component (1) arranged at a preset hole of the model and a driving component (2) which is in transmission connection with the sealing component (1) and is used for driving the sealing component (1) to break away from the preset hole, and is characterized in that the sealing component (1) is arranged in an interlayer of the model double-shell structure, the sealing component (1) comprises an upper sealing plug (11) and a lower sealing plug (12) which are respectively used for blocking two preset holes oppositely, the upper sealing plug (11) is in rotary connection with a first connecting rod (13), the lower sealing plug (12) is in rotary connection with a second connecting rod (14), a connecting part (15) which is mutually hinged is arranged between the first connecting rod (13) and the second connecting rod (14), an over-center configuration with an included angle larger than 180 DEG is formed between the first connecting rod (13) and the second connecting rod (14), upper sealing plug (16) which are respectively matched with the second connecting rod (14) and are used for limiting the two preset holes to rotate in the direction, the upper sealing plug (11) is continuously connected with the lower sealing plug (2) in a mode of being in a mutually matched mode, the upper sealing plug (12) is continuously pressed against the sealing plug (2) through the connecting part (3), the transmission piece (3) drives the first connecting rod (13) and the second connecting rod (14) to rotate around the connecting part (15) in the direction of reducing the included angle.
2. Hole breaking device according to claim 1, characterized in that the connection part (15) is a hinge shaft, and the first connecting rod (13) and the second connecting rod (14) are respectively provided with a hinge hole matched with the hinge shaft.
3. A hole breaking device according to claim 1, characterized in that the transmission member (3) is a flexible member, one end of which is connected to the connection part (15) and the other end is connected to the drive assembly (2).
4. A hole breaking device according to claim 1, characterized in that the geometrical centers of the upper sealing plug (11) and the lower sealing plug (12) are on the same axis when the first connecting rod (13) and the second connecting rod (14) form the over-centre configuration with the angle being larger than 180 °.
5. Hole breaking device according to claim 4, characterized in that the upper sealing plug (11) and the first connecting rod (13) and the lower sealing plug (12) and the second connecting rod (14) are connected in rotation by means of eccentric connecting pieces (4) respectively, so as to realize a coaxial arrangement.
6. A hole breaking device according to claim 5, characterized in that the eccentric connecting piece (4) comprises a disc part (41) and an eccentrically arranged connecting stem (42), the sealing plug being fixed to the disc part (41), the connecting stem (42) being in rotational connection with the corresponding connecting rod.
7. A hole breaking device according to claim 1, characterized in that the drive assembly (2) comprises at least one power unit, which is connected to the connecting part (15) via a transmission member (3), driving the connecting part (15) to move away from the sealing assembly (1).
8. Hole breaking device according to claim 7, characterized in that the drive assembly (2) comprises a first power unit (21) and a second power unit (22), the transmission member (3) is provided with a first connection point and a second connection point, the first power unit (21) is fixedly connected with the first connection point, the second power unit (22) is connected with the second connection point, and the second connection point is located between the first connection point and the connection part (15).
9. The hole breaking device according to claim 8, wherein the first power unit (21) and the second power unit (22) respectively comprise a motor and a crank structure connected with an output shaft of the motor, the crank length of the first power unit (21) is smaller than that of the second power unit (22), the first power unit (21) drives the transmission member (3) to generate a first displacement amount so as to enable the sealing assembly (1) to be separated from the over-center configuration, and the second power unit (22) drives the transmission member (3) to generate a second displacement amount larger than the first displacement amount and integrally pull the sealing assembly (1) away from the interlayer.
10. The hole breaking device according to claim 1, wherein the limiting part (16) is a groove or a protrusion structure which is respectively arranged on the first connecting rod (13) and the second connecting rod (14) and matched with each other.

Description

Hole breaking device for double-shell liquid cargo ship model test Technical Field The invention relates to a double-shell liquid cargo ship broken cabin leakage water inflow test model, in particular to a hole breaking device for a double-shell liquid cargo ship model test. Background In the field of liquid cargo ship model test, the simulation accuracy of broken cabin water inflow directly influences the research conclusion of ship damage stability and liquid cargo leakage rules. The existing active hole breaking device generally adopts a single-layer shell structure design, and realizes active control of hole breaking through a magnetic adsorption or gate opening and closing mode. However, when the device is applied to a double-shell liquid cargo ship model, the device is difficult to simultaneously meet the test requirement of synchronous hole breaking of the inner shell and the outer shell, and an actuating mechanism of the device often needs to pass through a bulkhead or enter the inside of a flow field in the hole breaking process, so that the initial state of fluid inside and outside the cabin is inevitably disturbed, and test data is distorted. Meanwhile, in the double-shell liquid cargo ship model, because an interlayer space exists between the inner shell and the outer shell, and both sides are under the action of fluid pressure, the traditional structure which depends on friction to keep sealing or is opened at one side is difficult to be suitable for a scene of simultaneous plugging of the double shells. Inside the double-shell interlayer, the plugging structure is required to be reliably watertight in a pressure-bearing state, and a stable state under the pressure-bearing condition is required to be broken through to realize synchronous hole breaking when needed. When the existing structure is pressed at two sides simultaneously, leakage is easily caused by uneven stress or insufficient sealing force of a sealing element, or opening is difficult due to structural design defects, and sealing reliability and opening controllability are difficult to be considered, so that accurate development of a double-shell liquid cargo ship broken cabin leakage model test is restricted. Disclosure of Invention The invention aims to provide a hole breaking device for a double-shell liquid cargo ship model test, which can form stable self-locking under the condition of double-shell interlayer compression and can actively release the self-locking to realize double-side synchronous hole breaking. According to the technical scheme, the hole breaking device for the model test of the double-shell liquid cargo ship comprises a sealing component arranged at a preset hole of the model and a driving component which is in transmission connection with the sealing component and is used for driving the sealing component to break away from the preset hole, wherein the sealing component is arranged in an interlayer of a double-shell structure of the model, the sealing component comprises an upper sealing plug and a lower sealing plug which are respectively used for sealing two preset holes which are oppositely arranged, the upper sealing plug is rotationally connected with a first connecting rod, the lower sealing plug is rotationally connected with a second connecting rod, a connecting part which is mutually hinged is arranged between the first connecting rod and the second connecting rod, an over-center structure with an included angle of more than 180 degrees is formed between the first connecting rod and the second connecting rod when the sealing component is in a sealing state, limiting parts which are mutually matched and are used for limiting the upper sealing plug and the lower sealing plug to continuously rotate in the direction of the included angle, the upper sealing plug and the lower sealing plug are respectively elastically pressed at the corresponding preset holes, the driving component is connected with the connecting part through a transmission piece, and the transmission piece drives the first connecting rod and the second connecting rod to rotate around the connecting rod in the direction of decreasing the included angle. Preferably, the connecting part is a hinge shaft, and hinge holes matched with the hinge shaft are respectively formed in the first connecting rod and the second connecting rod. Preferably, the transmission member is a flexible member, one end of the flexible member is connected with the connecting portion, and the other end of the flexible member is connected with the driving assembly. Preferably, when the first connecting rod and the second connecting rod form an over-center configuration with the included angle being larger than 180 degrees, the geometric centers of the upper sealing plug and the lower sealing plug are located on the same axis. Preferably, the upper sealing plug and the first connecting rod and the lower sealing plug and the second connecting rod are respectively connec