A wind turbine cylinder type basic model device for centrifuge testing

Abstract

The present invention provides a wind power cylinder-type foundation model device for centrifuge testing, comprising a counterweight box, a connecting rod, and a base that are fixedly connected in sequence from top to bottom, the base comprising a hollow device and a hollow cylinder that are coaxially arranged, the lower end of the hollow device is threadedly connected to the upper end of the hollow cylinder, the hollow device is provided with a plurality of ventilation pipes that penetrate up and down, the lower end of the hollow cylinder is open and the upper surface of the hollow cylinder is provided with a plurality of exhaust holes, and the exhaust holes can be blocked by rotating the hollow device. The present invention can realize that when the model is penetrated into the soil body, the gas in the cylinder and the soil body can be discharged smoothly through a simple structure, thereby enhancing the close connection between the model and the soil body, and at the same time, the exhaust hole of the hollow cylinder can be sealed by rotating the hollow device, and water can be contained in the hollow device to increase the stability of the model, and the weight box can be adjusted, the device has a simple structure, can simulate the engineering profile realistically and effectively, and has strong practicality.

Description

Technical Field

[0001] The invention belongs to the technical field of experimental cylindrical foundation model equipment, and in particular relates to a wind power cylindrical foundation model device for centrifuge testing. Background Art

[0002] Against the background of steady growth of the global wind power market, my country's wind power market is also showing a rapid development trend. The development of offshore wind power projects continues to heat up, and the market prospects are huge. At the same time, the safety performance of offshore wind power construction projects is becoming more and more important. With the increase in the capacity of offshore wind turbines, the increase in offshore distance and water depth, how to scientifically and effectively carry out the simulation and research of the safety and stability of offshore wind power foundations has become the focus and difficulty of offshore wind farm engineering design and construction. The prototype of offshore wind power structure is large, and centrifuge model tests are generally used for simulation research. However, since the wind power foundation is generally a cylindrical structure, due to the different structural characteristics of the wind power foundation prototype, its structural center of gravity is often quite different. On the other hand, during the penetration of the wind power foundation test model into the soil, the gas in the cylinder is difficult to be removed, which increases the difficulty of model making. These two problems directly affect the accuracy of the wind power foundation model test. Therefore, it is urgent to develop a new type of experimental wind power cylinder foundation model device and test method to solve the above problems. Summary of the invention

[0003] In view of this, the present invention aims to propose a wind turbine cylinder-type foundation model device for centrifuge testing, which can adjust the center of gravity and the gas between the model and the soil is easy to discharge, thereby improving the accuracy of the implementation.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A wind turbine cylinder-shaped foundation model device for centrifuge testing comprises a counterweight box, a connecting rod and a base which are fixedly connected in sequence from top to bottom. The base comprises a hollow device and a hollow cylinder which are coaxially arranged. The lower end of the hollow device is threadedly connected to the upper end of the hollow cylinder. The hollow device is provided with a plurality of ventilation pipes which pass through the hollow device from top to bottom. The lower end of the hollow cylinder is open and the upper surface of the hollow cylinder is provided with a plurality of exhaust holes, which can be blocked by rotating the hollow device.

[0006] Furthermore, the exhaust hole and the ventilation duct cannot be arranged at the axis at the same time. In order to ensure that the exhaust hole is blocked after the hollow cylinder is inserted into the predetermined position, if the exhaust hole and the ventilation duct are arranged at the axis at the same time, the exhaust hole and the ventilation duct will be in a connected state and cannot be sealed.

[0007] Furthermore, a rubber pad is provided at the lower end of the hollow device and the upper end of the hollow cylinder. The rubber pad is provided to prevent a gap between the exhaust hole and the ventilation pipe from affecting the sealing of the exhaust hole during the process of tightening the threads of the hollow device and the hollow cylinder, and to leave a margin for the threaded connection.

[0008] Furthermore, the hollow vessel is a hollow cylindrical structure surrounded by a peripheral wall, an upper end face and a lower end face, a water injection hole is arranged on the upper end face, mounting holes are opened at corresponding positions of the upper end face and the lower end face, and a ventilation pipe is arranged between the two mounting holes. Water can be stored inside the hollow vessel. On the one hand, the weight of the model is increased by injecting water to improve the stability of the base and maintain the center of gravity balance of the device. On the other hand, the center of gravity height of the model can be adjusted by adjusting the amount of injected water to meet the requirements of different types of tests.

[0009] Furthermore, a rubber pad is fixedly provided on the lower surface of the lower end surface, and a circular hole is opened on the rubber pad at a position corresponding to the mounting hole.

[0010] Furthermore, the hollow cylinder is a cylinder with an opening at the lower end, a rubber pad is fixedly arranged on the upper surface, and a circular hole is opened on the rubber pad at the position of the exhaust hole.

[0011] Furthermore, the lower end of the connecting rod is fixedly connected to the upper end surface of the hollow vessel, and a plurality of reinforcing rods are arranged between the lower part of the connecting rod and the hollow vessel.

[0012] Furthermore, the counterweight box is a hollow box, and a water inlet is provided at the upper end of the box, and a cover is provided at the water inlet. The counterweight is adjusted by adding water into the counterweight box.

[0013] Furthermore, there are two reinforcing rods, which are symmetrically arranged relative to the connecting rod.

[0014] Furthermore, the connection point between the upper end of the connecting rod and the counterweight box is the center of the counterweight box.

[0015] Directions:

[0016] First, place the device on the surface of the soil, adjust the counterweight of the counterweight box, and use external force or the device's own gravity to press the base into the soil. Since the upper surface of the hollow cylinder is provided with an exhaust hole, the air between the soil and the hollow cylinder will enter the gap between the hollow cylinder and the hollow device through the exhaust hole, and then be discharged through the ventilation pipe. When the hollow cylinder is pressed down to the specified depth, the hollow device is rotated. During the rotation of the hollow device, the distance between the hollow device and the hollow cylinder is constantly shortened. When the exhaust hole on the upper surface of the hollow cylinder is staggered with the ventilation pipe of the hollow device, that is, the two rubber pads fit each other and the round holes are staggered, the sealing between the hollow device and the hollow cylinder is achieved. At this time, the air in the hollow cylinder and the soil cannot be discharged from the base. After the air is exhausted, the hollow cylinder and the soil can be more closely connected. Then add water into the hollow device to keep the center of gravity of the device balanced.

[0017] Compared with the prior art, the wind turbine cylinder-type basic model device for centrifuge testing described in the present invention has the following advantages:

[0018] The wind power cylinder-type foundation model device for centrifuge testing of the present invention can realize that when the model is penetrated into the soil, the gas in the cylinder and the soil can be discharged smoothly through a simple structure, thereby enhancing the close connection between the model and the soil. At the same time, the exhaust hole of the hollow cylinder can be sealed by rotating the hollow device, and water can be contained in the hollow device to increase the stability of the model. The weight box can be adjusted. The device has a simple structure, can truly and effectively simulate the engineering profile, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of a wind turbine cylinder-type basic model device for centrifuge testing according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the connection between the connecting rod and the hollow device according to an embodiment of the present invention;

[0022] Figure 3 A perspective view of a hollow vessel according to an embodiment of the present invention;

[0023] Figure 4 It is a perspective view of a hollow cylinder according to an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1-weight box; 2-connecting rod; 3-hollow device; 301-peripheral wall; 302-upper end surface; 303-lower end surface; 304-water injection hole; 4-hollow cylinder; 5-ventilation pipe; 6-exhaust hole; 7-reinforcement rod. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] 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 by specific circumstances.

[0029] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] A wind turbine cylinder-shaped foundation model device for centrifuge testing comprises a counterweight box 1, a connecting rod 2 and a base which are fixedly connected in sequence from top to bottom. The base comprises a hollow device 3 and a hollow cylinder 4 which are coaxially arranged. The lower end of the hollow device 3 is threadedly connected to the upper end of the hollow cylinder 4. The hollow device 3 is provided with a plurality of ventilation pipes 5 which pass through the hollow device 3 from top to bottom. The lower end of the hollow cylinder 4 is open and the upper surface of the hollow cylinder 4 is provided with a plurality of exhaust holes 6. The exhaust holes 6 can be blocked by rotating the hollow device 3.

[0031] In order to ensure that the hollow cylinder 4 blocks the vent hole 6 after being inserted into the predetermined position, if the vent hole 6 and the vent pipe 5 are arranged at the same time at the axial center, the vent hole 6 and the vent pipe 5 will be in a connected state and cannot be sealed.

[0032] As mentioned above, rubber pads are provided at the lower end of the hollow vessel 3 and the upper end of the hollow cylinder 4. The rubber pads are provided to prevent a gap between the exhaust hole 6 and the ventilation pipe 5 from affecting the sealing of the exhaust hole 6 during the process of tightening the threads of the hollow vessel 3 and the hollow cylinder 4, and to leave a margin for the threaded connection.

[0033] As mentioned above, the hollow vessel 3 is a hollow cylindrical structure surrounded by a peripheral wall 301, an upper end face 302 and a lower end face 303, a water injection hole 304 is arranged on the upper end face, mounting holes are opened at corresponding positions of the upper end face 302 and the lower end face 303, and the ventilation pipe 5 is arranged between the two mounting holes.

[0034] As mentioned above, a rubber pad is fixedly provided on the lower surface of the lower end surface 303 , and a circular hole is opened at the position of the rubber pad corresponding to the mounting hole.

[0035] As mentioned above, the hollow cylinder 4 is a cylinder with an opening at the lower end, a rubber pad is fixedly provided on the upper surface 401 , and a circular hole is opened in the rubber pad at the position of the exhaust hole 6 .

[0036] As mentioned above, the lower end of the connecting rod 2 is fixedly connected to the upper end surface of the hollow vessel 3 , and a plurality of reinforcing rods 7 are arranged between the lower portion of the connecting rod 2 and the hollow vessel 3 .

[0037] As mentioned above, the counterweight box 1 is a hollow box, and a water inlet is provided at the upper end of the box, and a cover is provided at the water inlet. By adding water into the counterweight box 1, the counterweight is adjusted.

[0038] As mentioned above, there are two reinforcing rods 7 , which are symmetrically arranged relative to the connecting rod 2 .

[0039] As mentioned above, the connection point between the upper end of the connecting rod 2 and the counterweight box 1 is the center of the counterweight box 1.

[0040] Directions:

[0041] First, place the device on the soil surface to enhance the overall stability and balance. Adjust the counterweight of the counterweight box 1, and use external force or the device's own gravity to press the base into the soil. Since the upper surface of the hollow cylinder 4 is provided with an exhaust hole 6, the air between the soil and the hollow cylinder 4 will enter the gap between the hollow cylinder 4 and the hollow device 3 through the exhaust hole 6, and then be discharged through the ventilation pipe 5. When the hollow cylinder 4 is pressed down to a specified depth, the hollow device 3 is rotated. During the rotation of the hollow device 3, the distance between the hollow device 3 and the hollow cylinder 4 is constantly shortened. When the exhaust hole 6 on the upper surface of the hollow cylinder 4 and the ventilation pipe 5 of the hollow device 3 are staggered, that is, the two rubber pads fit each other and the round holes are staggered, the sealing between the hollow device 3 and the hollow cylinder 4 is achieved. At this time, the air in the hollow cylinder 4 and the soil cannot be discharged from the base. After the air is discharged, the hollow cylinder 4 and the soil can be more closely connected. Then add water into the hollow device 3 to keep the center of gravity of the device balanced. .

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine cylinder type basic model device for centrifuge testing, characterized in that: It includes a counterweight box, a connecting rod, and a base which are fixedly connected in sequence from top to bottom. The base includes a hollow device and a hollow cylinder which are coaxially arranged. The lower end of the hollow device is threadedly connected to the upper end of the hollow cylinder. The hollow device is provided with a plurality of ventilation pipes which penetrate from top to bottom. The lower end of the hollow cylinder is open and the upper surface of the hollow cylinder is provided with a plurality of exhaust holes. The exhaust holes can be blocked by rotating the hollow device. The exhaust hole and the ventilation duct cannot be set at the axis at the same time; The lower end of the hollow vessel and the upper end of the hollow cylinder are both provided with rubber pads; The hollow device is a hollow cylindrical structure surrounded by a peripheral wall, an upper end face and a lower end face. A water injection hole is arranged on the upper end face, and mounting holes are opened at corresponding positions of the upper end face and the lower end face. The ventilation pipe is arranged between the two mounting holes.

2. The wind turbine cylinder type basic model device for centrifuge testing according to claim 1 is characterized in that: A rubber pad is fixedly arranged on the lower surface of the lower end surface, and a circular hole is opened at the position of the rubber pad corresponding to the mounting hole.

3. The wind turbine cylinder type basic model device for centrifuge testing according to claim 1 is characterized in that: The hollow cylinder is a cylinder with an opening at the lower end, a rubber pad is fixedly arranged on the upper surface, and a circular hole is opened on the rubber pad at the position of the exhaust hole.

4. The wind turbine cylinder type basic model device for centrifuge testing according to claim 1 is characterized in that: The lower end of the connecting rod is fixedly connected to the upper end surface of the hollow vessel, and a plurality of reinforcing rods are arranged between the lower part of the connecting rod and the hollow vessel.

5. The wind turbine cylinder type basic model device for centrifuge testing according to claim 1, characterized in that: The counterweight box is a hollow box body, and a water inlet is arranged at the upper end of the box body, and a cover is assembled at the water inlet.

6. The wind turbine cylinder type basic model device for centrifuge testing according to claim 4, characterized in that: There are two reinforcing rods, which are symmetrically arranged relative to the connecting rod.

7. The wind turbine cylinder type basic model device for centrifuge testing according to claim 6 is characterized in that: The connection point between the upper end of the connecting rod and the counterweight box is the center of the counterweight box.

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