A vibration monitoring electromagnetic iron removal linkage device and method

Abstract

The present invention relates to the field of pipeline iron removal, and specifically to a vibration monitoring electromagnetic iron removal linkage device and method. It includes a power supply, a vibration sensor, a vibration monitoring device, a relay, an iron magnetic coil, an iron magnetic body, a leakage trough and a valve; the vibration sensor is arranged at a position close to the bearing on the gearbox, the vibration sensor is communicatively connected to the vibration monitoring device, the vibration monitoring device is communicatively connected to the relay, the relay is electrically connected to the iron magnetic coil, the iron magnetic coil is wound on the surface of the iron magnetic body, one end of the iron magnetic body is close to the leakage trough, the leakage trough is communicated with the lubricating oil pipeline, the valve is arranged on the lubricating oil pipeline and is located at the leakage trough; the power supply is electrically connected to the vibration monitoring device and the relay respectively. The present invention can perform trigger-type electromagnetic iron removal and is convenient for collecting and cleaning iron filings.

Description

Technical Field

[0001] The present invention relates to the field of pipeline iron removal, and particularly to a vibration monitoring electromagnetic iron removal linkage device and method. Background Art

[0002] In order to monitor the operating status of the gearbox of a wind turbine in real time, according to the NBT310004-2011 standard, vibration on-line monitoring equipment needs to be installed on the components of the wind turbine gearbox. This equipment can diagnose problems with the tooth surface and bearings of the gearbox in a timely manner. Except for the lubricating oil pipeline of the gearbox being connected to the outside world, other parts are in a closed state. Once tooth breakage or wear occurs, the broken iron filings can only swim between the gearbox and the lubricating oil pipeline along with the lubricating oil.

[0003] Currently, a scheme of using a permanent magnet to adsorb broken iron filings in the lubricating oil of the gearbox has been proposed. This scheme realizes iron filing removal based on the magnetic principle of the permanent magnet. However, a wind turbine is an electromagnetic generator unit, and the electromagnetic environment is complex. Adding a permanent magnet for a long time will have an adverse impact on the power generation unit and power quality, especially for a well-operating gearbox, there is no need to remove broken iron filings. In addition, the designed service life of the fan is 20 years, and the permanent magnet is prone to demagnetization and cannot play a good role in removing iron filings. Summary of the Invention

[0004] The purpose of the present invention is to address the problems in the background art and propose a vibration monitoring electromagnetic iron removal linkage device and method that can perform trigger-type electromagnetic iron removal and is convenient for collecting and cleaning iron filings.

[0005] On the one hand, the present invention proposes a vibration monitoring electromagnetic iron removal linkage device for removing iron from the lubricating oil pipeline in a gearbox. The gearbox also includes bearings. The vibration monitoring electromagnetic iron removal linkage device includes a power supply, a vibration sensor, a vibration monitoring device, a relay, an iron magnetic coil, an iron magnetic body, a leakage trough, and a valve.

[0006] The vibration sensor is arranged on the gearbox near the bearing. The vibration sensor is communicatively connected to the vibration monitoring device, the vibration monitoring device is communicatively connected to the relay, the relay is electrically connected to the iron magnetic coil, the iron magnetic coil is wound around the surface of the iron magnetic body, one end of the iron magnetic body is close to the leakage trough, the leakage trough is communicated with the lubricating oil pipeline, the valve is arranged on the lubricating oil pipeline and is located at the leakage trough; the power supply is electrically connected to the vibration monitoring device and the relay respectively.

[0007] Preferably, the leakage trough is detachably arranged on the lubricating oil pipeline.

[0008] Preferably, a total of five vibration sensors are provided.

[0009] On the other hand, the present invention proposes an operating method for the above vibration monitoring electromagnetic iron removal linkage device, including the following steps:

[0010] S1. The vibration sensor collects vibration data and transmits the data to the vibration monitoring device;

[0011] S2. The vibration monitoring device collects a set of data every hour. The duration of each set of data is 40.96 s. The data of each channel are filtered and the validity period of each set of filtered data is calculated;

[0012] When the effective values of any two or more channels exceed the limit, the vibration monitoring device outputs a switch signal to the relay;

[0013] When the effective value of any channel shows an increasing trend, the vibration monitoring device outputs a switch signal to the relay;

[0014] S3. When receiving the switch signal from the vibration monitoring device, the relay turns on the power supply and the ferromagnetic coil; when not receiving the switch signal, the relay turns off the power supply and the ferromagnetic coil.

[0015] Preferably, in S2, there are two sets of filtering frequency bands: 0.1 Hz - 10 Hz, 10 Hz - 1000 Hz.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The present invention can perform trigger-type electromagnetic iron removal and is convenient for collecting and cleaning iron filings. The present invention can output a switch signal when it monitors that the vibration intensity of the gearbox exceeds the limit, and through the relay, connect the power supply and the ferromagnetic coil to create an electromagnetic force at the ferromagnetic body to attract the iron filings in the lubricating oil pipeline, so that the iron filings accumulate at the leakage trough. When the vibration intensity of the gearbox does not exceed the limit, no switch signal is output, and the power supply and the ferromagnetic coil are not connected. Thus, the purpose of trigger-type electromagnetic iron removal is achieved, which will not have an adverse impact on the power generation unit and power quality, will not affect the continued normal operation of the well-operating gearbox, and has a long service life. When it is necessary to clean the iron filings, close the valve and clean the iron filings at the leakage trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the system connection block diagram of the embodiment of the present invention;

[0019] Figure 2 It is the data processing flow chart of the vibration monitoring device in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] As Figure 1-2 shown, a vibration monitoring electromagnetic iron removal linkage device proposed by the present invention is used for iron removal in the lubricating oil pipeline of the gearbox, and the gearbox also includes bearings.

[0021] The vibration monitoring electromagnetic iron removal linkage device includes a power supply, a vibration sensor, a vibration monitoring device, a relay, a ferromagnetic coil, a ferromagnet, a leakage groove and a valve. The vibration sensor is arranged on the gearbox near the bearing. There are five vibration sensors in total. The vibration sensor is connected to the vibration monitoring device for communication. The vibration monitoring device is connected to the relay for communication. The relay is electrically connected to the ferromagnetic coil. The ferromagnetic coil is wound on the surface of the ferromagnet. One end of the ferromagnet is close to the leakage groove. The leakage groove is connected to the lubricating oil pipeline. The leakage groove plays the role of receiving the broken iron filings in the lubricating oil. The leakage groove can be detachably arranged on the lubricating oil pipeline and can be replaced. The valve is arranged on the lubricating oil pipeline and is located at the leakage groove. The power supply is electrically connected to the vibration monitoring device and the relay respectively.

[0022] The operation method of the vibration monitoring electromagnetic iron removal linkage device comprises the following steps:

[0023] S1, the vibration sensor collects vibration data and transmits the data to the vibration monitoring device;

[0024] S2. The vibration monitoring device collects a set of data every hour. Each set of data lasts 40.96 seconds. The data of each channel is filtered and the validity period of each set of data after filtering is calculated. There are two sets of filtering frequency bands: 0.1Hz-10Hz, 10Hz-1000Hz;

[0025] When the effective values ​​of any two or more channels exceed the limit, the vibration monitoring device outputs a switch signal to the relay;

[0026] When the effective value of any channel shows an increasing trend, the vibration monitoring device outputs a switch signal to the relay;

[0027] S3. When the relay receives the switching signal from the vibration monitoring device, it connects the power supply and the ferromagnetic coil; when the relay does not receive the switching signal, it disconnects the power supply and the ferromagnetic coil.

[0028] This embodiment can perform triggered electromagnetic iron removal and is convenient for collecting and cleaning iron filings. This embodiment can output a switch signal when it is detected that the vibration intensity of the gearbox exceeds the limit, and connect the power supply to the ferromagnetic coil through a relay, generate electromagnetic force at the ferromagnetic body, attract iron filings in the lubricating oil pipeline, and cause the iron filings to accumulate in the leakage groove. When the vibration intensity of the gearbox does not exceed the limit, the switch signal is not output, and the power supply is not connected to the ferromagnetic coil. Thereby achieving the purpose of triggered electromagnetic iron removal, it will not have an adverse effect on the power generation unit and the quality of electric energy, will not affect the continued normal operation of the well-functioning gearbox, and has a long service life. When it is necessary to clean the iron filings, close the valve and clean the iron filings at the leakage groove.

[0029] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A vibration monitoring electromagnetic iron removal linkage device for iron removal in the lubricating oil pipeline of a gearbox, the gearbox further including bearings, characterized in that, The vibration monitoring electromagnetic iron removal linkage device includes a power supply, a vibration sensor, a vibration monitoring device, a relay, a ferromagnetic coil, a ferromagnetic body, a leakage trough, and a valve; The vibration sensor is arranged at a position on the gearbox close to the bearing. The vibration sensor is communicatively connected to the vibration monitoring device, the vibration monitoring device is communicatively connected to the relay, the relay is electrically connected to the ferromagnetic coil, the ferromagnetic coil is wound on the surface of the ferromagnetic body, one end of the ferromagnetic body is close to the leakage trough, the leakage trough is communicated with the lubricating oil pipeline, and the valve is arranged on the lubricating oil pipeline and is located at the leakage trough; The power supply is electrically connected to the vibration monitoring device and the relay respectively; When it is monitored that the vibration intensity of the gearbox exceeds the limit, a switch signal is output, and the power supply and the ferromagnetic coil are connected through the relay to generate an electromagnetic force at the ferromagnetic body to attract iron filings in the lubricating oil pipeline, so that the iron filings accumulate at the leakage trough. When the vibration intensity of the gearbox does not exceed the limit, no switch signal is output, and the power supply and the ferromagnetic coil are not connected.

2. The electromagnetic iron removal linkage device for vibration monitoring according to claim 1, wherein The leakage trough is detachably arranged on the lubricating oil pipeline.

3. The electromagnetic iron removal linkage device for vibration monitoring according to claim 1, characterized in that, A total of five vibration sensors are provided.

4. A method for operating the vibration monitoring electromagnetic iron removal linkage device according to claim 3, characterized in that, It includes the following steps: S1. The vibration sensor collects vibration data and transmits the data to the vibration monitoring device; S2. The vibration monitoring device collects a set of data every hour, and the duration of each set of data is 40.96 s. The data of each channel are filtered and the validity period of each set of filtered data is calculated; When the effective values of any two or more channels exceed the limit, the vibration monitoring device outputs a switch signal to the relay; When the effective value of any channel shows an increasing trend, the vibration monitoring device outputs a switch signal to the relay; S3. When the relay receives the switch signal from the vibration monitoring device, it connects the power supply and the ferromagnetic coil; when the relay does not receive the switch signal, it disconnects the power supply and the ferromagnetic coil.

5. The operating method of a vibration monitoring electromagnetic iron removal linkage device according to claim 4, characterized in that, In S2, there are two sets of filtering frequency bands: 0.1 Hz - 10 Hz, 10 Hz - 1000 Hz.

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