High-speed rotating equipment multi-point test device

Abstract

The present invention discloses a multi-measurement point testing device for high-speed rotating equipment, comprising an outer cylinder sleeved on the outside of a rotor, an upper cover plate arranged on the top of the outer cylinder, a mounting hole for arranging an axial sensor is provided on the upper cover plate, a plurality of sensor groups are arranged axially on the outer cylinder, each sensor group comprises a plurality of radial sensor assemblies, and the radial sensor assembly comprises a sensor seat fixedly connected to the outer cylinder and a radial sensor sleeved therein. The present invention is applied to monitoring the working state of the rotor of a high-speed rotating equipment, by arranging a sensor on the upper cover plate to measure the axial vibration signal of the rotor; and by arranging a sensor on the outer cylinder to measure the radial vibration signal of the rotor. The present invention more comprehensively monitors the working state of the rotor of a high-speed rotating equipment, and can obtain the relationship between the axial amplitude and frequency of the rotor, as well as the relationship between the amplitude, frequency and phase in the radial vibration of the rotor.

Description

Technical Field

[0001] The invention belongs to a high-speed rotating equipment performance testing device, and in particular relates to a high-speed rotating equipment multi-measurement point testing device. Background Art

[0002] High-speed rotating equipment is used in industrial production in various fields, and its main feature is its ultra-high rotation speed. During operation, the stability of high-speed rotating equipment is an important factor in determining the performance of the equipment. Therefore, in the research and development and testing of high-speed rotating equipment, it is necessary to monitor the rotor of the running equipment in all aspects. The specific monitoring parameter is the vibration signal of the rotor. It is required to extract information from the vibration signal of the rotor, obtain the movement law of the rotor by calculation, and grasp the working status of the rotor in real time.

[0003] The design requirements of high-speed rotating equipment are different when used in different industrial fields, and the size and structure of its internal rotor will also be different. The vibration signal measurement of different parts of the rotor should be selected according to actual needs. Usually, the rotor measurement includes vibration signals in the axial and radial directions of the rotor. For most equipment, the rotor has rotational imbalance, which requires the measurement of the axial vibration of the upper and lower parts of the rotor. However, measuring only one radial vibration of the rotor circumference can only obtain the amplitude change of the rotor at that position, but not the corresponding phase change. Therefore, it is necessary to perform multi-point testing on high-speed rotating equipment to obtain the complete working trajectory and motion law of the rotor. Summary of the invention

[0004] The present invention is proposed to meet the demand for multi-point radial vibration measurement in the prior art, and its purpose is to provide a multi-point testing device for high-speed rotating equipment.

[0005] The present invention is achieved through the following technical solutions:

[0006] A multi-point testing device for high-speed rotating equipment comprises an outer cylinder sleeved on the outside of a rotor, an upper cover plate is arranged on the top of the outer cylinder, a mounting hole for arranging an axial sensor is provided on the upper cover plate, a plurality of sensor groups are arranged on the outer cylinder along the axial direction, each sensor group comprises a plurality of radial sensor assemblies, and the radial sensor assembly comprises a sensor seat fixedly connected to the outer cylinder and a radial sensor sleeved therein.

[0007] In the above technical solution, the intervals between adjacent sensor groups are unequal.

[0008] In the above technical solution, the number of the sensor groups is three.

[0009] In the above technical solution, the sensor group is arranged along the circumference of the outer wall of the outer cylinder.

[0010] In the above technical solution, the angles between adjacent radial sensor components are different.

[0011] In the above technical solution, the sensor group includes three radial sensor components.

[0012] In the above technical solution, the angles between adjacent radial sensor components are 45° and 90° respectively.

[0013] In the above technical solution, the sensor seat is cylindrical, and the middle through hole thereof is connected to the middle cavity of the shell.

[0014] In the above technical solution, the upper cover plate is connected to the outer cylinder by screws.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a high-speed rotating equipment multi-measurement point test device, which is used to monitor the working state of the rotor of the high-speed rotating equipment, by arranging a sensor on the upper cover plate to measure the axial vibration signal of the rotor; by arranging a sensor on the outer cylinder to measure the radial vibration signal of the rotor. The present invention more comprehensively monitors the working state of the rotor of the high-speed rotating equipment, and can obtain the relationship between the axial amplitude and frequency of the rotor, and the relationship between the amplitude, frequency and phase in the radial vibration of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional structure diagram of a multi-measurement point testing device for high-speed rotating equipment according to the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the multi-point testing device for high-speed rotating equipment of the present invention.

[0019] Figure 3 yes Figure 2 AA section view.

[0020] in:

[0021] 1 Outer tube 2 Upper cover

[0022] 3 Sensor holder 4 Mounting hole

[0023] 5 Rotor.

[0024] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the multi-point testing device for high-speed rotating equipment of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0026] Example 1

[0027] like Figures 1 to 3 As shown, a multi-measurement point testing device for high-speed rotating equipment includes an outer cylinder 1 sleeved on the outside of a rotor 5, an upper cover plate 2 is arranged on the top of the outer cylinder 1, and the upper cover plate 2 is connected to the outer cylinder 1 by screws; the upper cover plate 2 is provided with a mounting hole 4 for setting an axial sensor, and multiple sensor groups (three groups in this embodiment) are arranged on the outer cylinder 1 along the axial direction, each sensor group includes multiple radial sensor assemblies (three in this embodiment), and the radial sensor assembly includes a sensor seat 3 fixedly connected to the outer cylinder and a radial sensor sleeved therein.

[0028] The intervals between adjacent sensor groups are not equal. In this embodiment, the distance between the upper sensor group and the middle sensor group is greater than the distance between the middle sensor group and the lower sensor group.

[0029] The sensor group is arranged along the circumference of the outer wall of the outer cylinder 1, and the angles between adjacent radial sensor components are different, namely θ1=45° and θ2=90°.

[0030] The sensor seat 3 is cylindrical, and the middle through hole thereof is connected with the middle cavity of the housing 1 , so that the radial sensor can be extended into the housing 1 to monitor the rotor 5 .

[0031] The material of the upper cover plate 2 is aluminum alloy.

[0032] The outer tube 1 is made of No. 20 steel.

[0033] The present invention obtains the relationship between phase and frequency in radial vibration of the rotor through three sensor groups at the upper part, the middle part and the lower part of the outer cylinder and three radial sensor components with different angles constituting each sensor group.

[0034] Working principle of the present invention:

[0035] The principle of monitoring the working state of the rotor of a high-speed rotating device in the present invention is to monitor the vibration signal of the rotor of the high-speed rotating device by arranging sensors, specifically: measuring the axial vibration signal of the rotor by arranging sensors on the upper cover plate; measuring the radial vibration signal of the rotor by arranging sensors on the outer cylinder.

[0036] The present invention is preferably used in monitoring rotors with a large aspect ratio, focusing on monitoring the axial vibration of the rotor and the radial vibration of the upper, middle and lower parts of the rotor. At the same time, in the radial vibration measurement, three sensor measuring points arranged at different angles on the same circumference of the outer cylinder can be used to calculate the phase of the rotor vibration. The device can more comprehensively monitor the working state of the rotor of the high-speed rotating equipment, and can obtain the relationship between the axial amplitude and frequency of the rotor, as well as the relationship between the amplitude, frequency and phase in the radial vibration of the rotor.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope 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 shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A multi-point testing device for high-speed rotating equipment, characterized in that: It comprises an outer cylinder (1) sleeved on the outside of a rotor (5), an upper cover plate (2) being arranged on the top of the outer cylinder (1), a mounting hole (4) for arranging an axial sensor being provided on the upper cover plate (2), a plurality of sensor groups being arranged on the outer cylinder (1) along the axial direction, each sensor group comprising a plurality of radial sensor assemblies, the radial sensor assemblies comprising a sensor seat (3) fixedly connected to the outer cylinder and a radial sensor sleeved therein; The sensor group is arranged along the circumference of the outer wall of the outer cylinder (1); The included angles between adjacent radial sensor components are different; The sensor group includes three radial sensor assemblies; The angles between adjacent radial sensor components are 45° and 90° respectively.

2. The multi-point testing device for high-speed rotating equipment according to claim 1, characterized in that: The intervals between adjacent sensor groups are unequal.

3. The multi-point testing device for high-speed rotating equipment according to claim 2, characterized in that: The number of the sensor groups is three.

4. The multi-point testing device for high-speed rotating equipment according to claim 1, characterized in that: The sensor seat (3) is cylindrical, and its middle through hole is connected to the middle cavity of the outer cylinder (1).

5. The multi-point testing device for high-speed rotating equipment according to claim 1, characterized in that: The upper cover plate (2) is connected to the outer cylinder (1) via screws.

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