Rotating machinery carbon fiber rotor strength testing device

Abstract

The present invention discloses a device for testing the strength of a carbon fiber rotor of a rotating machine, comprising a light gas gun connected to the rotating machine via a flexible connector. The light gas gun comprises an air chamber and a side loading chamber connected via a pipeline, and a solenoid valve is provided on the pipeline. The outlet of the side loading chamber is connected to one end of a launch tube, and the other end of the launch tube is connected to the flexible connector. By changing the air chamber pressure, the present invention can effectively control the speed of the projectile, apply different impact energies to the rotor, and ensure that the rotor fails. By using a flexible part to connect the light gas gun and the rotating machine, the rotation angle after the machine fails can be measured, and the strength of the carbon fiber rotor of the rotating machine can be quantitatively calculated, effectively measuring the strength of the rotating rotor, and meeting the needs of the existing technology.

Description

Technical Field

[0001] The invention belongs to the technical field of rotor strength testing, and in particular relates to a carbon fiber rotor strength testing device for a rotating machinery. Background Art

[0002] Carbon fiber materials, due to their high structural strength, are widely used to manufacture various components, replacing traditional metal materials. In some applications, the rotor drums of rotating machinery are made entirely of carbon fiber composite materials, and their reliability requires appropriate testing. The strength of carbon fiber rotors is related to factors such as the carbon fiber material, ply thickness, carbon fiber winding angle, and winding method, any of which can cause significant variations in the rotor's strength. The most effective stress-loading method for assessing rotor drum strength is to increase the stress by increasing the speed. However, increasing the speed to cause rotor failure is very difficult, and external force must be applied to destroy the rotor structure in order to efficiently and accurately complete the carbon fiber rotor strength test. Furthermore, in some specialized applications, the strength of carbon fiber rotors in rotating machinery needs to be tested at a certain operating speed. However, if a working rotor fails, the rotor fragments will rub against the machine's outer drum, causing it to rotate. This necessitates specialized rotor strength testing equipment to meet these technical requirements. Summary of the Invention

[0003] The present invention is proposed to meet the needs of the prior art, and its purpose is to provide a carbon fiber rotor strength testing device for a rotating machinery.

[0004] The present invention is achieved through the following technical solutions:

[0005] A rotating machinery carbon fiber rotor strength testing device includes a light gas gun connected to the rotating machinery via a flexible connector. The light gas gun includes an air chamber and a side loading chamber connected by a pipeline, and a solenoid valve is provided on the pipeline. The outlet of the side loading chamber is connected to one end of a launch tube, and the other end of the launch tube is connected to the flexible connector.

[0006] In the above technical solution, the air chamber, solenoid valve, side loading chamber and launch tube are arranged coaxially.

[0007] In the above technical solution, a cover plate is provided at the bullet feed port of the side loading chamber.

[0008] In the above technical solution, the plane where the bullet feed port of the side loading chamber is located is perpendicular to the plane where the connection port of the side loading chamber and the launch tube is located.

[0009] In the above technical solution, the connection port between the rotating machine and the flexible connector is arranged in the middle of the rotating machine.

[0010] The above technical solution also includes a remote switch connected to the solenoid valve via a signal line.

[0011] In the above technical solution, the flexible connector is a stainless steel bellows.

[0012] In the above technical solution, nitrogen is filled into the gas chamber.

[0013] The beneficial effects of the present invention are:

[0014] The present invention provides a rotating machinery carbon fiber rotor strength testing device. By changing the air chamber pressure, the projectile speed can be effectively controlled, and different impact energies can be applied to the rotor to ensure rotor failure. Flexible parts are used to connect the light gas gun and the rotating machinery, so the rotation angle after the machine fails can be measured, and the strength of the rotating machinery carbon fiber rotor can be quantitatively calculated, thereby effectively measuring the strength of the rotating rotor and meeting the needs of the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a rotating machinery carbon fiber rotor strength testing device of the present invention.

[0016] in:

[0017] 1 Air chamber 2 Solenoid valve

[0018] 3 Side loading chambers 4 Launch tubes

[0019] 5 Flexible connector 6 Rotating machinery.

[0020] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0022] like Figure 1 As shown, a rotating machinery carbon fiber rotor strength testing device is characterized in that it includes a light gas gun connected to a rotating machinery 6 via a flexible connector 5, the light gas gun includes an air chamber 1 and a side loading chamber 3 connected by a pipeline, and a solenoid valve 2 is provided on the pipeline, the outlet of the side loading chamber 3 is connected to one end of a launch tube 4, and the other end of the launch tube 4 is connected to the flexible connector 5.

[0023] The air chamber 1, the electromagnetic valve 2, the side loading chamber 3 and the launching tube 4 are arranged coaxially.

[0024] The air chamber 1 is filled with nitrogen at a pressure not exceeding 5 MPa;

[0025] A cover plate is provided at the bullet inlet of the side loading chamber 3 .

[0026] The plane where the bullet feeding port of the side loading chamber 3 is located is perpendicular to the plane where the connection port of the side loading chamber 3 and the launch tube 4 is located.

[0027] The flexible connector 5 is connected to the rotating machine and the launch tube by bolts.

[0028] The connection port between the rotating machine 6 and the flexible connector 5 is arranged in the middle of the rotating machine 6 .

[0029] The flexible connector is a stainless steel bellows, which can ensure the vacuum performance of the system. Its radial bending and axial expansion and contraction characteristics ensure the rotation angle during the failure process of the rotating machinery.

[0030] The rotating machinery carbon fiber rotor strength testing device further includes a remote switch connected to the solenoid valve 2 via a signal line to achieve remote control, which is beneficial to ensuring personnel safety.

[0031] Working principle of the present invention:

[0032] When using this invention to test rotor strength, the projectile is propelled at high speed by releasing high-pressure nitrogen from the air chamber, striking the rotating machinery in operation. Rotating machinery rotors rotate at high speeds during operation. When external impacts are applied to rotating components, they experience extreme stress. When the stress exceeds the material's strength limit, the rotor will fail, and the machine will rotate as the rotor impacts.

[0033] Using nitrogen as the driving gas and varying the air chamber pressure effectively controls the projectile velocity, applying varying impact energies to the rotor to ensure rotor failure. By using flexible components to connect the light gas cannon and rotating machinery, the rotation angle after machine failure can be measured, allowing for quantitative calculation of the strength of the rotating machinery's carbon fiber rotors and providing a reliable testing method. The specific process for measuring the rotation angle after machine failure is as follows: when the machine rotor fails, the machine will rotate as the rotor collides with it due to the flexible connection. An angle measuring tool is then used to measure the angle between the machine's axis and the light gas cannon's axis, thereby determining the rotation angle after failure. Furthermore, due to the flexible connection, the kinetic energy generated by rotor fragments rubbing against the machine's outer cylinder after the working rotor fails is converted into overall rotation of the machine, avoiding the outer cylinder rotation caused by rigid connections.

[0034] The working process of the present invention:

[0035] During the loading operation, the side loading cover 3 is removed and the projectile is loaded. Before operation, the solenoid valve 2 is closed and the air chamber 1 is filled with nitrogen. During operation, the operator remotely presses the switch of the solenoid valve 2, opening the channel. The high-pressure nitrogen accelerates the projectile in the launch tube 4, impacting the carbon fiber rotor of the rotating machine, damaging the rotor's working state and causing it to fail. Finally, the rotation angle of the rotating machine is measured and the strength of the carbon fiber rotor is calculated.

[0036] 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.

[0037] 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 orientations or positional relationships based on the orientations 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", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. 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.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] The applicant declares that the above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention fall within the scope of protection and disclosure of the present invention.

Claims

1. A rotating machinery carbon fiber rotor strength testing device, characterized by: The invention relates to a light gas gun connected to a rotating machine (6) via a flexible connector (5), wherein the light gas gun comprises an air chamber (1) and a side loading chamber (3) connected via a pipeline, and a solenoid valve (2) is provided on the pipeline, an outlet of the side loading chamber (3) is connected to one end of a launch tube (4), and the other end of the launch tube (4) is connected to the flexible connector (5), a cover plate is provided at the feed port of the side loading chamber (3), and a connection port between the rotating machine (6) and the flexible connector (5) is provided at the middle of the rotating machine (6); The rotating machinery carbon fiber rotor strength testing device further comprises a remote switch connected to the solenoid valve (2) via a signal line.

2. The rotating machinery carbon fiber rotor strength testing device according to claim 1, characterized in that: The air chamber (1), the electromagnetic valve (2), the side loading chamber (3) and the launch tube (4) are coaxially arranged.

3. The rotating machinery carbon fiber rotor strength testing device according to claim 1, characterized in that: The plane where the bullet feed port of the side loading chamber (3) is located is perpendicular to the plane where the connection port of the side loading chamber (3) and the launch tube (4) are located.

4. The rotating machinery carbon fiber rotor strength testing device according to claim 1, characterized in that: The flexible connecting piece is a stainless steel bellows.

5. The rotating machinery carbon fiber rotor strength testing device according to claim 1, characterized in that: The air chamber (1) is filled with nitrogen.

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