Lifting floating bottom system for experimental pool and experimental method

Abstract

The invention provides a lifting floating bottom system for an experimental pool, and the system comprises the experimental pool which comprises an experimental cavity, and the bottom of the experimental cavity is provided with a plurality of buffer seats; the guide rail is arranged on the inner side wall of the experiment cavity; the floating bottom body is movably arranged in the experiment cavity and comprises a plurality of floating boxes with hollow cavities; the guide jacking mechanism is arranged on the outer side wall of the floating bottom body and comprises a linear displacement driving source and a guide wheel connected with the linear displacement driving source, and the guide wheel is arranged in the guide rail in a sliding mode; and the winch is connected with the bottom of the floating bottom body through a flexible traction piece. The invention further provides an experiment method of the lifting floating bottom system. Compared with the prior art, the floating bottom has the advantages that the floating bottom body can rise by means of the buoyancy of the floating bottom body and descend under the dragging action of the flexible traction piece, the depth of the floating bottom body can be adjusted conveniently and rapidly, and the water depth needed by various experiments is met.

Description

Technical Field

[0001] The invention relates to the technical field of marine engineering, and in particular to a lifting and lowering floating bottom system for an experimental pool and an experimental method. Background Art

[0002] Since structures in the ocean are subject to the influence of complex marine environment, it is necessary to strengthen the research work of deep-sea engineering technology. In view of the deep waters of the deep sea, there are many difficulties and limitations in conducting field experiments directly. Therefore, conducting physical model experiments in the laboratory has become one of the indispensable research methods, that is, reproducing the physical phenomena of the prototype by scaling the prototype to a certain extent, and then conducting relevant analysis on the actual engineering situation. Therefore, the performance of marine engineering experimental equipment has an important influence on the effectiveness and accuracy of experimental research.

[0003] In recent years, the number of offshore wind power engineering installations in my country has continued to increase. With the in-depth exploration of the offshore wind power field, the requirements for experimental conditions in related model experiments have become increasingly stringent. However, some existing deep-water experimental pools with fixed depths can no longer meet the needs of offshore wind power engineering simulation experiments. Summary of the invention

[0004] In view of the above-mentioned defects, an object of the present invention is to provide a lifting and lowering floating bottom system for an experimental water pool to meet the different water depth requirements of different experiments.

[0005] The present invention provides a lifting floating bottom system for an experimental water pool, comprising: an experimental water pool, comprising an experimental cavity with an open top and a sealed bottom, wherein a plurality of buffer seats are provided at the bottom of the experimental cavity, and the plurality of buffer seats have the same height; a guide rail, which is arranged on the inner side wall of the experimental cavity and extends in the up-down direction; a floating bottom body, which is movably arranged in the experimental cavity and comprises a plurality of buoyancy boxes with hollow cavities; a guide and tightening mechanism, which is arranged on the outer side wall of the floating bottom body and comprises a linear displacement driving source and a guide wheel connected to the linear displacement driving source, wherein the guide wheel is slidably arranged in the guide rail; a winch, which is connected to the bottom of the floating bottom body through a flexible traction member, wherein when the winch releases the flexible traction member, the floating bottom body rises; when the winch recovers the flexible traction member, the floating bottom body descends.

[0006] Preferably, a sonar is also provided at the bottom of the floating bottom body.

[0007] Preferably, the device further comprises a steering member arranged on the extension path of the flexible traction member.

[0008] Preferably, the winch is also provided with a force sensor, and the force sensor is used to monitor the tension on the flexible traction member.

[0009] Preferably, the winch is arranged on the experimental water pool through the force sensor, and the force sensor is a column pressure sensor.

[0010] Preferably, it further comprises a controller, which is respectively connected to the guide and tightening mechanism and the winch.

[0011] The present invention also provides an experimental method for the aforementioned lifting and lowering floating bottom system, comprising the following steps:

[0012] S1, controlling the winch to retract the flexible traction member, so that the floating bottom body descends to the buffer seat, and adjusting the horizontality of the floating bottom body;

[0013] S2, controlling the winch to release the flexible traction member, so that the floating bottom body rises to the top of the experimental water pool;

[0014] S3, fixing the experimental equipment on the floating bottom body;

[0015] S4, controlling the winch to retract the flexible traction member, so that the floating bottom body descends to the required depth for the experiment, controlling the linear displacement drive source to work, driving the guide wheel to tighten the guide rail, so that the floating bottom body is fixed at the current depth, and conducting the experiment.

[0016] The benefit of the present invention lies in that, compared with the prior art, the floating bottom body of the present invention can rise by relying on its own buoyancy and descend under the dragging action of the flexible traction member, thereby conveniently and quickly realizing the depth adjustment of the floating bottom body to meet the water depth required for various experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a lifting and lowering floating bottom system used in an experimental water pool according to the present invention;

[0018] Figure 2 It is an enlarged schematic diagram of the guide tightening mechanism.

[0019] Component number description:

[0020] 1 Experimental pool

[0021] 11 Experimental Chamber

[0022] 2 Guide rails

[0023] 3 Buffer seat

[0024] 4 Floating bottom body

[0025] 5. Guide and tightening mechanism

[0026] 51 Linear displacement drive source

[0027] 52 Guide wheel

[0028] 6 Winch

[0029] 7 Flexible traction piece

[0030] 8 Steering parts

[0031] 9 Force sensor DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0036] Figure 1 FIG. 1 is a schematic diagram of the structure of the lifting and lowering floating bottom system for the experimental water pool of the present invention. In the following description, Figure 1 The attached figure in the figure is used as a reference for the direction. Figure 1 , the upward direction along the view paper is the upward direction, the downward direction along the view paper is the downward direction, the right direction along the view paper is the right direction, and the left direction along the view paper is the left direction.

[0037] like Figure 1 As shown, the present invention provides a lifting floating bottom system for an experimental water pool, the lifting floating bottom system comprising an experimental water pool 1, a guide rail 2, a floating bottom body 4, a guide and tightening mechanism 5 and a winch 6.

[0038] The experimental water pool 1 includes an experimental chamber 11 with an open top and a sealed bottom. The experimental chamber 11 has a certain depth, and water can be added therein to simulate the marine environment and carry out marine engineering model experiments. A plurality of buffer seats 1 extending upward are provided at the bottom of the experimental chamber 11, and the plurality of buffer seats 1 have the same height. The guide rail 2 is provided on the inner side walls around the experimental chamber 11 and extends in the up-down direction.

[0039] The floating bottom body 4 for carrying the experimental equipment is movably arranged in the experimental chamber 11, which is made of a plurality of buoyancy boxes with hollow cavities welded together, and can float on the surface of the water body under the action of buoyancy. Preferably, a sonar is also provided at the bottom of the floating bottom body 4, which can measure the depth of the floating bottom body 4 in the experimental chamber 11 by using the propagation and reflection characteristics of sound waves in water.

[0040] like Figure 1 and Figure 2 As shown, the guide and tightening mechanism 5 is arranged on the outer side walls around the floating bottom body 4, and includes a linear displacement driving source 51 and a guide wheel 52 connected to the linear displacement driving source 51, and the guide wheel 52 is slidably arranged in the guide rail 2. When the linear displacement driving source 51 is not working, the guide wheel 52 can slide up and down along the guide rail 2, and the guide rail 2 limits and guides the lifting and lowering movement of the floating bottom body 4; when the linear displacement driving source 51 is working, it drives the guide wheel 52 to move in the left and right directions and tighten the guide rail 2, and the friction between the guide wheel 52 and the guide rail 2 resists the upward driving force of the guide wheel 52 and the floating bottom body 4, so that the position of the floating bottom body 4 is fixed. The form of the linear displacement driving source 51 is not limited, and a device that can output linear displacement, such as a cylinder, a hydraulic cylinder, a linear motor, etc., can be selected.

[0041] A winch 6 is provided on one side of the experimental pool 1, and a plurality of pulling points are provided at the bottom of the floating bottom body 4, and each pulling point is connected to the winch 6 through a flexible traction member 7. In a specific embodiment of the present invention, the winch 6 includes a frame, a drum rotatably arranged on the frame, and a motor for driving the drum to rotate, and one end of the flexible traction member 7 is fixed on the drum, and the other end is fixed on the pulling point. When the motor is working, the drum can be driven to rotate forward or reverse, so as to release or recover the flexible traction member 7, so that the floating bottom body 4 rises or falls. The flexible traction member 7 is specifically a steel wire rope or a cable. In order to optimize the extension path of the flexible traction member 7 and prevent the flexible traction member 7 from affecting the experimental operation, preferably, the winch 6 is arranged at the top right side of the experimental pool 1, and a plurality of steering members 8 are also provided at the bottom of the experimental pool 1, and some of the flexible traction members 7 extend in the up and down direction after being turned by the steering member 8, and are connected to the winch 6. The steering member 8 is specifically a roller. Furthermore, a force sensor 9 is also provided on the winch 6, and the force sensor 9 is used to monitor the tension on the flexible traction member 7. Preferably, the frame of the winch 6 is arranged on the experimental water pool 1 through the force sensor 9, and the force sensor 9 is a column pressure sensor. Since the tension of the flexible traction member 7 on the winch 6 is transmitted to the experimental water pool 1 through the column pressure sensor, the magnitude of the interaction force measured by the column pressure sensor is the magnitude of the tension on the flexible traction member 7, thereby realizing load monitoring and protection of the flexible traction member 7, and preventing the flexible traction member 7 from being damaged due to overloading.

[0042] Furthermore, the floating bottom lifting system of the present invention further comprises an electric control console and a controller, and the controller is respectively connected to the guide and tightening mechanism 5, the motor of the winch 6, the sonar, and the force sensor 9. The controller is specifically a PLC, which is a prior art and will not be described in detail here.

[0043] like Figure 1 and Figure 2 As shown, the present invention also provides an experimental method for the aforementioned lifting and lowering floating bottom system, and the experimental method comprises the following steps:

[0044] S1. Before conducting the experiment, the operator first issues a command through the electronic control console, which controls the winch 6 through the Profibus-DP network to synchronously recover all the flexible traction members 7, so that the floating bottom body 4 overcomes the buoyancy and slowly descends along the guide rail 2 to the buffer seat 3. Since the heights of the buffer seats 3 are the same, the floating bottom body 4 is leveled.

[0045] S2, control the winch 6 to synchronously release all the flexible traction members 7, and the floating bottom body 4 rises to the top of the experimental pool 1 and remains stable under the buoyancy of the water. The floating bottom body 4 partially offsets its own weight through the buoyancy provided by the buoyancy box, thereby achieving stable floating on the water surface.

[0046] S3. The operator uses special lifting equipment or tools to fix the experimental equipment on the floating bottom body 4 according to the experimental requirements. The experimental equipment may include but is not limited to model devices and related sensor equipment. After all experimental equipment is installed, the operator performs a system check to confirm that all equipment and sensors are in normal working condition.

[0047] S4, after the experimental equipment is installed and the system status is confirmed to be normal, the winch 6 is controlled to synchronously recover all the flexible traction parts 7, so that the floating bottom body 4 slowly descends along the guide rail 2, and the descending speed of the floating bottom body 4 is the same as the recovery speed of the flexible traction parts 7 by the winch 6. The controller monitors the signal of the force sensor 9, displays the tension of the flexible traction parts 7 of each pulling point on the electric control console, and performs load monitoring and protection on the flexible traction parts 7, which is convenient for control. When the force sensor 9 detects that the weight limit is over or under the light limit, the system will trigger an audible and visual alarm to prompt the operator that the system is abnormal. During the descent of the floating bottom body 4, the controller also receives the ranging signal of the sonar, accurately calculates the current depth of the floating bottom body 4, and calculates the errors of each sonar distance signal to ensure that the level of the entire floating bottom body 4 meets the experimental requirements. After the floating bottom body 4 descends to the required depth of the experiment, the linear displacement drive source 51 is controlled to drive the guide wheel 52 to press against the guide rail 2, and the floating bottom body 4 is fixed at the current depth. Then, the experimental equipment (such as a wave generator, an experimental wind tunnel, etc.) is turned on to carry out the experiment.

[0048] S5. After all the experiments are completed, the linear displacement drive source 51 stops working, and the winch 6 is controlled to release all the flexible traction members 7 synchronously. The floating bottom body 4 rises to the top of the experimental pool 1 under the action of buoyancy and remains stable. The operator removes the experimental equipment installed on the floating bottom body 4 using special lifting equipment or tools.

[0049] In the above experimental method, when the lifting and lowering floating bottom system fails and triggers the sound and light alarm, the operator needs to immediately press the emergency stop button on the electric control console. At this time, the system will start the emergency drainage program and gradually lower the water level in the experimental chamber 11. As the water level drops, the floating bottom body 4 will slowly sink under the action of its own gravity. When the water in the experimental chamber 11 is completely drained, the floating bottom body 4 will be stably placed on the buffer seat 3. Technicians can enter the bottom of the experimental chamber 11 to troubleshoot and maintain the equipment.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A lifting and lowering floating bottom system for an experimental pool, characterized in that: include: The experimental water pool comprises an experimental cavity with an open top and a sealed bottom, wherein a plurality of buffer seats are arranged at the bottom of the experimental cavity, and the plurality of buffer seats have the same height; A guide rail is arranged on the inner wall of the experimental chamber and extends in the up-down direction; A floating bottom body, movably arranged in the experimental chamber, includes a plurality of floating boxes with hollow cavities; A guide and tightening mechanism, arranged on the outer side wall of the floating bottom body, comprises a linear displacement driving source and a guide wheel connected to the linear displacement driving source, wherein the guide wheel is slidably arranged in the guide rail; The winch is connected to the bottom of the floating bottom body through a flexible traction member. When the winch releases the flexible traction member, the floating bottom body rises; when the winch retracts the flexible traction member, the floating bottom body descends.

2. The lifting and lowering floating bottom system according to claim 1, characterized in that: A sonar is also provided at the bottom of the floating bottom body.

3. The lifting and lowering floating bottom system according to claim 1, characterized in that: The invention also comprises a steering member arranged on the extension path of the flexible traction member.

4. The lifting and lowering floating bottom system according to claim 1, characterized in that: The winch is also provided with a force sensor, which is used to monitor the pulling force on the flexible traction member.

5. The lifting and lowering floating bottom system according to claim 4, characterized in that: The winch is arranged on the experimental water pool through the force sensor, and the force sensor is a column pressure sensor.

6. The lifting and lowering floating bottom system according to claim 1, characterized in that: It also includes a controller, which is connected to the guide and tightening mechanism and the winch respectively.

7. An experimental method for a lifting and lowering floating bottom system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, controlling the winch to retract the flexible traction member, so that the floating bottom body descends to the buffer seat, and adjusting the horizontality of the floating bottom body; S2, controlling the winch to release the flexible traction member, so that the floating bottom body rises to the top of the experimental water pool; S3, fixing the experimental equipment on the floating bottom body; S4, controlling the winch to retract the flexible traction member, so that the floating bottom body descends to the required depth for the experiment, controlling the linear displacement drive source to work, driving the guide wheel to tighten the guide rail, so that the floating bottom body is fixed at the current depth, and conducting the experiment.

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