CN-121982963-A - Novel offshore structure wind load and moment of inertia collaborative simulation device

CN121982963ACN 121982963 ACN121982963 ACN 121982963ACN-121982963-A

Abstract

The invention relates to the technical field of ocean engineering and discloses a novel offshore structure wind load and moment of inertia collaborative simulation device, wherein a central rod is used for being connected with a moment of inertia measuring device, at least one load executing mechanism can move and lock on the central rod in an axial direction and is used for simulating wind load borne by a structure, at least one upper balancing weight can move and lock on the central rod in the axial direction and is used for initially adjusting the gravity center and inertia of the device, at least one moment of inertia control mechanism can move and lock on the central rod in the axial direction and comprises a driving mechanism and a weight adjusting mechanism, and the driving mechanism can drive the weight adjusting mechanism to move and lock along the vertical tangential direction of the axis of the central rod.

Inventors

ZHANG JIE
Tang Bingzhe
DUAN WENYANG
WANG MINGZHI
LI ZHENXUAN
WANG ZIQI
Lv Yongao
CHEN LIUQING
Xin Zhikang

Assignees

青岛哈尔滨工程大学创新发展中心
哈尔滨工程大学

Dates

Publication Date: 20260505
Application Date: 20260130

Claims (10)

1. Novel marine structure wind load and moment of inertia are simulation device in coordination, which is characterized in that includes: a central rod (5) for connection to a moment of inertia measuring device; at least one load actuator axially movable and lockable on said central rod (5), said load actuator being adapted to simulate the wind load to which the structure is subjected; At least one upper counterweight (6) axially movable and lockable on said central rod (5), said upper counterweight (6) being used for preliminary adjustment of the centre of gravity and inertia of the device; At least one moment of inertia control mechanism capable of moving axially and locking on the central rod (5), the moment of inertia control mechanism comprising a driving mechanism and a weight adjustment mechanism, the driving mechanism being capable of driving the weight adjustment mechanism to move and lock in a direction tangential to the vertical axis of the central rod (5).
2. The novel offshore structure wind load and moment of inertia collaborative simulation apparatus according to claim 1, wherein the load actuator comprises: a expander (3) slidably associated with said central rod (5); a brushless motor (9) mounted on the expander (3) through a first fixer (8); And the fan blades (10) are connected with the output shaft of the brushless motor (9).
3. The novel offshore structure wind load and moment of inertia collaborative simulation apparatus according to claim 2, wherein the load actuator further comprises: The pressure sensor (4) is fixedly arranged on the expander (3) through a second fixer (7), and the first fixer (8) is connected with the measuring end of the pressure sensor (4).
4. The novel offshore structure wind load and moment of inertia collaborative simulation apparatus according to claim 1, further comprising: And a connector (15) slidably matched with the central rod (5), wherein the connector (15) is connected with the moment of inertia control mechanism.
5. The novel offshore structure wind load and moment of inertia collaborative simulation apparatus according to claim 1, wherein the drive mechanism comprises: a slide rail (1); the sliding table (17) is in sliding fit with the sliding rail (1), and the weight adjusting mechanism is arranged on the sliding table (17); and the power assembly is used for driving the sliding table (17) to slide along the sliding rail (1).
6. The novel offshore structure wind load and moment of inertia collaborative simulation apparatus according to claim 5, wherein the weight adjustment mechanism comprises: the fixing frame (11) is connected with the sliding table (17); And the fixed flange (12) is matched with the fixed frame (11) to lock the counterweight disc (13).
7. The novel offshore structure wind load and moment of inertia collaborative simulation apparatus according to claim 5, wherein the power assembly comprises: and an output shaft of the stepping motor (18) is connected with a screw rod (16) through a coupler (2), and the screw rod (16) is in transmission fit with the sliding table (17).
8. The novel offshore structure wind load and moment of inertia collaborative simulation device according to claim 7, wherein both ends of the screw (16) are provided with limit baffles (14).
9. The device for collaborative simulation of wind load and moment of inertia of a novel offshore structure according to claim 1, wherein when the moment of inertia control mechanisms are plural, the moment of inertia control mechanisms are circumferentially equally spaced on the same plane.
10. The device for collaborative simulation of wind load and moment of inertia of a novel offshore structure according to claim 1, wherein when the number of the load actuators is plural, wind loads in different directions to which the structure is subjected are simulated respectively.

Description

Novel offshore structure wind load and moment of inertia collaborative simulation device Technical Field The invention relates to the technical field of ocean engineering, in particular to a novel wind load and moment of inertia collaborative simulation device for an offshore structure. Background In marine engineering pool model experiments, the study of the dynamic response of large offshore structures such as floating fans, FPSOs and the like is limited by the scale effect. The physical model generally follows the Friedel-crafts number similarity criteria, while the wind load imposed on the superstructure is dominated by the Reynolds number similarity criteria. If the wind load is simulated according to the displacement similarity requirement, the required simulated wind speed far exceeds the limit of the existing equipment, so that the wind load cannot be directly and accurately reproduced. The prior art often uses external torque compensation, but its effectiveness is highly dependent on the exact balancing of the moment of inertia. If the moment of inertia, especially around roll and pitch axes, is not accurately simulated in proportion, the angular acceleration of the model under the coupling action of wind and waves will have significant deviation, and the resonance characteristic distortion is induced, even the test result is seriously deviated from the actual working condition, and serious accidents such as abnormal mooring of western african FPSO, sinking of the Bacilian P-36 platform and the like are caused. The existing load simulation device such as an array fan, a six-rotor propeller and the like can reproduce the pneumatic load with multiple degrees of freedom, but the dead weight is large, the gravity center and the moment of inertia of a model can be changed, and the traditional static counterweight is difficult to realize dynamic adjustment, so that the load loading and the inertia balancing are disjointed, and the test precision and the test efficiency are limited. Disclosure of Invention The invention aims to provide a novel offshore structure wind load and moment of inertia collaborative simulation device, which aims to solve or improve at least one of the technical problems. In order to achieve the above purpose, the invention provides the scheme that the novel offshore structure wind load and moment of inertia collaborative simulation device comprises: the center rod is used for being connected with the rotational inertia measuring device; At least one load actuator axially movable and lockable on said central rod, said load actuator being adapted to simulate a wind load to which the structure is subjected; at least one upper counterweight axially movable and lockable on said central rod, said upper counterweight being used for initially adjusting the centre of gravity and inertia of the device; The at least one moment of inertia control mechanism can move and lock along the axial direction on the central rod, the moment of inertia control mechanism comprises a driving mechanism and a weight adjusting mechanism, and the driving mechanism can drive the weight adjusting mechanism to move and lock along the vertical tangential direction of the axis of the central rod. Optionally, the load actuator includes: A expander slidably engaged with the central rod; the brushless motor is arranged on the expander through a first fixer; and the fan blades are connected with the output shaft of the brushless motor. Optionally, the load actuator further includes: The pressure sensor is fixedly arranged on the expander through a second fixer, and the first fixer is connected with the measuring end of the pressure sensor. Optionally, the method further comprises: and the connector is slidably matched with the central rod and is connected with the moment of inertia control mechanism. Optionally, the driving mechanism includes: A slide rail; The sliding table is in sliding fit with the sliding rail and is provided with the weight adjusting mechanism; and the power assembly is used for driving the sliding table to slide along the sliding rail. Optionally, the weight adjustment mechanism includes: the fixed frame is connected with the sliding table; And the fixed flange is matched with the fixed frame to lock the counterweight disc. Optionally, the power assembly includes: and an output shaft of the stepping motor is connected with a screw rod through a coupler, and the screw rod is in transmission fit with the sliding table. Optionally, both ends of the screw rod are provided with limiting baffles. Optionally, when the moment of inertia control mechanism is a plurality of, circumference equidistant setting is in the coplanar. Optionally, when the load actuating mechanism is a plurality of, simulate respectively the wind load of different directions that the structure received. The invention discloses the following technical effects: According to the wind speed reduction scale, the load executing mechanis