Equipment rigidity simulation device of power foundation

Abstract

The utility model provides an equipment rigidity simulation device of a power foundation, which comprises a gate-type frame arranged on the power foundation, the gate-type frame comprises two hollow columns symmetrically arranged on two sides of the power foundation, and a hollow cross beam is connected between the upper ends of the two columns; a hollow column body is arranged at the upper part of the cross beam; cover plates are arranged at the upper end of the hollow column body and the upper end of the column. According to the utility model, the accuracy of dynamic foundation model test results can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of simulation devices, and in particular relates to a device for simulating the stiffness of a power foundation. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] When rotating machines such as steam turbines and gas turbines are in operation, the centrifugal force generated by the imbalance of the rotating parts of the shaft system will cause vibration of the entire equipment and forced vibration of the lower foundation. Once the equipment and the foundation resonate, it will cause serious engineering accidents. Therefore, in order to ensure the normal operation of these machines, it is very important to consider the dynamic characteristics of the lower foundation during the design stage. Generally, during the design stage, it is necessary to conduct a scaled model test on the foundation to obtain the foundation-related dynamic characteristic parameters, so as to predict whether the foundation can ensure the safe operation and stop of the equipment in the actual project.

[0004] In the existing power foundation model tests, it is possible to complete the scaled model production of the foundation, but it is impossible to produce a scaled model of the upper equipment. Researchers generally simplify the equipment into multiple mass blocks and arrange them on the foundation. This method only considers the impact of the equipment mass on the foundation dynamic performance and ignores the impact of the equipment stiffness. Summary of the invention

[0005] In order to solve the above problems, the utility model proposes a device for simulating the stiffness of a power foundation. The utility model can improve the accuracy of the test results of the power foundation model.

[0006] According to some embodiments, the utility model adopts the following technical solutions:

[0007] A device for simulating the stiffness of equipment on a power foundation, comprising a gantry frame arranged on the power foundation, the gantry frame comprising two hollow columns symmetrically arranged on both sides of the power foundation, and a hollow crossbeam connected between the upper ends of the two columns;

[0008] A hollow column is provided on the upper part of the crossbeam;

[0009] The upper ends of the hollow cylinder and the column are both provided with cover plates.

[0010] As an optional embodiment, the column is a rectangular column.

[0011] As an optional implementation, the hollow cylinder is a rectangular cylinder.

[0012] As an optional implementation, the hollow cylinder is arranged at the center of the crossbeam.

[0013] As an optional embodiment, the crossbeam is a rectangular column.

[0014] As an optional embodiment, all parts of the portal frame are made of steel.

[0015] As an optional implementation, the cover plate is a solid steel plate.

[0016] As an optional implementation, the hollow cylinder and the crossbeam are welded.

[0017] As an optional embodiment, the beams and columns are welded.

[0018] As an optional implementation, the cover plate and the hollow cylinder and the column are welded.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The test component of the utility model is easy to manufacture, and the operation of manufacturing the scaled steel column and steel beam is simple, time-saving and cost-effective.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 An exploded view of the overall structure of the equipment stiffness simulation device of this embodiment;

[0024] Figure 2 Schematic diagram of the overall structure of the equipment stiffness simulation device of this embodiment;

[0025] Figure 3 is a top view of the equipment stiffness simulation device of this embodiment;

[0026] Figure 4 It is a front view of the equipment stiffness simulation device of this embodiment;

[0027] Figure 5 It is a left side view of the equipment stiffness simulation device of this embodiment;

[0028] Among them, 1. Column, 2. Beam, 3. Hollow Column, 4. Cover Plate, 5. Power Foundation. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0030] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Embodiment 1

[0033] A device for simulating the stiffness of a power foundation, such as Figure 1 As shown, it includes a gantry frame arranged on a power foundation 5, wherein the gantry frame includes two hollow columns 1 symmetrically arranged on both sides of the power foundation, the columns 1 are placed vertically, and a hollow crossbeam 2 is connected between the upper ends of the two columns 1;

[0034] A hollow column 3 is provided on the upper part of the crossbeam 2;

[0035] like Figure 2 As shown, the upper ends of the hollow cylinder 3 and the column 1 are both provided with a cover plate 4.

[0036] In this embodiment, the column 1 is a rectangular column, which is arranged on the surfaces of both sides of the power foundation 5. The hollow column 3 is a rectangular column. Figure 3 As shown, the hollow cylinder 3 is arranged at the center of the crossbeam 2 .

[0037] The crossbeam 2 is a rectangular column, which is horizontally arranged and fixedly connected to the surface of the column 1 at both ends.

[0038] All parts of the gantry are made of steel, which is simple to process, light in weight and easy to carry.

[0039] like Figure 4 As shown, the cover plate 4 is a solid steel plate, which is placed on the upper part of the hollow column 3. When a forced vibration test is performed on the dynamic foundation, a simple harmonic exciting force needs to be applied at the axis of the equipment, and the cover plate 4 is the surface to which the vertical exciting force is applied.

[0040] The hollow column 3 and the cross beam 2 are welded together. The hollow column 3 is placed vertically, with its upper surface fixedly connected to the surface of the cover plate 4 and its lower surface fixedly connected to the surface of the cross beam 2 .

[0041] The beam 2 and the column 1 are welded.

[0042] The cover plate 4 and the hollow column 3 and the column 1 are welded.

[0043] In this embodiment, the power foundation 5 is a simplified schematic model. The power foundation in an actual project is larger in size and more complex in shape. The sizes of the columns 1 and beams must be designed according to actual conditions.

[0044] The connections of the above-mentioned parts are all made by welding, except for the connection between the column 1 and the power foundation 5, which is made of steel and concrete and can be connected by professional adhesives.

[0045] Before installation, if Figure 5 As shown, firstly, the vertical and horizontal stiffness obtained from the actual equipment test on the upper part of the power foundation is calculated on a reduced scale to obtain the equipment stiffness required in the scaled model test. According to the equipment stiffness, the cross-sectional dimensions and heights of the column 1, beam 2, hollow column 3, and cover plate 4 are designed, and the column 1, beam 2, hollow column 3, and cover plate 4 are first welded into a whole. After completion, the device is installed at the corresponding position of the power foundation 5 through an adhesive. When performing a forced vibration test on the power foundation, the simple harmonic excitation force is applied to the surface of the cover plate 4 and the hollow column 3 respectively, so as to realize the function of simulating the equipment stiffness of the power foundation.

[0046] The above description is only the preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made by those skilled in the art within the spirit and principle of the utility model without creative labor shall be included in the protection scope of the utility model.

Claims

1. A device for simulating the stiffness of a power foundation, characterized in that: It comprises a gantry frame arranged on a power base, wherein the gantry frame comprises two hollow columns symmetrically arranged on both sides of the power base, and a hollow crossbeam is connected between the upper ends of the two columns; A hollow column is provided on the upper part of the crossbeam; The upper ends of the hollow cylinder and the column are both provided with cover plates.

2. The device for simulating the stiffness of a power foundation as claimed in claim 1, characterized in that: The column is a rectangular column.

3. The device for simulating the stiffness of a power foundation as claimed in claim 1, characterized in that: The hollow column is a rectangular column.

4. A device for simulating the stiffness of a power foundation as claimed in claim 1 or 3, characterized in that: The hollow column is arranged at the center of the crossbeam.

5. The device for simulating the stiffness of a power foundation as claimed in claim 1, characterized in that: The crossbeam is a rectangular column.

6. The device for simulating the stiffness of a power foundation as claimed in claim 1, characterized in that: All parts of the portal frame are made of steel.

7. The device for simulating the stiffness of a power foundation as claimed in claim 1, characterized in that: The cover plate is a solid steel plate.

8. A device for simulating the stiffness of a power foundation as claimed in claim 1 or 5, characterized in that: The hollow cylinder and the cross beam are welded.

9. A device for simulating the stiffness of a power foundation as claimed in claim 1 or 5, characterized in that: The cross beams and the columns are welded.

10. A device for simulating the stiffness of a power foundation as claimed in claim 1 or 7, characterized in that: The cover plate and the hollow column and the column are welded.

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