Marine vacuum pump station performance monitoring and fault diagnosis platform

Abstract

The invention relates to a marine vacuum pump station performance monitoring and fault diagnosis platform. An electronic flowmeter is arranged at the front end of a vacuum container, and a pressure sensor is arranged on the vacuum container; the electronic flowmeter monitors the suction flow of the vacuum pump station, and the pressure sensor measures the vacuum pressure value of the vacuum system; a shock absorber is arranged below the vacuum pump; four vibration accelerometers are respectively arranged above and below the shock absorber; a noise sensor is arranged on the vacuum pump; the center console collects analog quantity signals of the electronic flowmeter, the pressure sensor and the vibration accelerometer, sends a fault alarm signal to a superior system at the same time, draws a suction performance curve graph of the vacuum pump and is used for vacuum pump vibration noise monitoring and vacuum pump station fault diagnosis. The method is used for monitoring the suction performance level of the vacuum pump station in real time and analyzing deviation from a standard curve; fault information of the vacuum pump is diagnosed and recorded; signals are remotely transmitted to a superior system, so that sailors can conveniently use and maintain the vacuum pump station.

Description

Technical Field

[0001] The invention relates to a ship domestic sewage vacuum collection system, in particular to a ship vacuum pump station performance monitoring and fault diagnosis platform. Background Art

[0002] With the widespread application of domestic sewage vacuum collection systems in the field of ship sewage, the vacuum pump station plays a core role in the vacuum collection system. If it fails to operate normally, it will affect the use of the vacuum toilets in the sanitary units of the entire ship, so it is necessary to implement the health status monitoring of the vacuum pump station. Existing domestic and foreign marine vacuum pump stations lack facilities related to performance monitoring and fault diagnosis platforms, and there are also few technical reserves.

[0003] At present, marine vacuum pump stations generally only have the automatic operation and stop functions of the pump. When the suction performance level of the pump is reduced, it cannot be monitored in real time, which will affect the crew's normal use of the vacuum toilet. The failure of the vacuum pump station is complex in actual ship applications and lacks relevant information for specific analysis. Therefore, the fault diagnosis platform helps the crew collect and diagnose the fault information of the vacuum pump station, reminds the crew to promptly and accurately discover and solve the existing pump station failure problems, and at the same time, it can increase the service life of the vacuum pump station. Summary of the invention

[0004] Based on the above analysis of the performance and fault problems of the vacuum pump station, the present invention proposes a performance monitoring and fault diagnosis platform for a marine vacuum pump station.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a marine vacuum pump station performance monitoring and fault diagnosis platform, including a vacuum pump station, a vacuum container, a central console, sensors and test instruments, an electronic flow meter and a stop valve are arranged at the front end of the vacuum container, and a pressure sensor is arranged on the cylinder of the vacuum container; the electronic flow meter monitors the suction flow of the vacuum pump station respectively, and the pressure sensor measures the vacuum pressure value of the vacuum system; a shock absorber is arranged under the vacuum pump in the vacuum pump station, and four vibration accelerometers are arranged above and below the shock absorber; a noise sensor is arranged on the pump head of the vacuum pump; the central console collects analog signals of the electronic flow meter, the pressure sensor and the vibration accelerometer, and at the same time sends a fault alarm signal to the superior system, and draws a suction performance curve of the vacuum pump, and is used for vacuum pump vibration and noise monitoring and vacuum pump station fault diagnosis.

[0006] Furthermore, a pressure gauge is provided on the vacuum container cylinder for calibrating the pressure sensor.

[0007] Furthermore, the vacuum pump station is a double-layer vibration isolation structure.

[0008] Furthermore, two negative pressure controllers are arranged on the pipe system between the vacuum pump station and the vacuum container to respectively control the start and stop of the vacuum pump and the low vacuum alarm.

[0009] Furthermore, the central console adopts host computer monitoring + PLC logic control mode.

[0010] Furthermore, the suction performance curve of the vacuum pump station is plotted in the suction performance curve diagram of the vacuum pump station, and the health status of the vacuum pump station is judged by comparing the deviation with the theoretical suction performance curve diagram.

[0011] Furthermore, the vibration and noise monitoring of the vacuum pump station is used to monitor the upper and lower vibration acceleration and noise values ​​of the vacuum pump, and compare them with the vibration and noise baseline values ​​of the vacuum pump. When they deviate from a certain threshold, the abnormal condition of the vacuum pump is judged.

[0012] Furthermore, the vacuum pump station fault diagnosis is used to prompt the crew of fault information that has occurred, including: vacuum pump motor overload, pipeline air tightness abnormality, vacuum pump impeller abnormality, vacuum pump bearing abnormality, vacuum pump shock absorber abnormality, and vacuum pump noise abnormality.

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

[0014] 1) Draw the suction performance curve of the vacuum pump by measuring the vacuum pressure and suction flow at the front end of the vacuum pump.

[0015] 2) Measure the vibration and noise of the vacuum pump in different time periods and compare them with the vibration and noise baseline value of the vacuum pump. When it deviates from a certain threshold, the abnormal condition of the vacuum pump is judged.

[0016] 3) The central console of the vacuum pump station can manually and automatically control the operation of the vacuum pump. When running in the automatic state, the vacuum pressure controller starts at a low vacuum degree and stops at a high vacuum degree. At the same time, the vacuum pump stops running and sends an alarm signal when the vacuum pump suction flow, vibration noise are abnormal, or the motor is overloaded.

[0017] 4) The fault diagnosis information of the central console includes: air tightness of the pipeline at the front end of the vacuum pump, wear of the impeller of the vacuum pump, wear of the bearing of the vacuum pump, vibration isolation effect of the vacuum shock absorber, and overload of the vacuum pump motor.

[0018] Therefore, the marine vacuum pump station performance monitoring and fault diagnosis platform of the present invention has the following characteristics:

[0019] 1) Realized intelligent operation of domestic sewage vacuum collection system.

[0020] 2) Used to monitor the suction performance level of the vacuum pump station in real time and analyze the deviation from the standard curve.

[0021] 3) Diagnose and record the fault information of the vacuum pump.

[0022] 4) The signal is transmitted remotely to the upper system, making it convenient for the crew to use and maintain the vacuum pump station. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the vacuum pump station performance monitoring and fault diagnosis platform system of the present invention;

[0024] Figure 2 It is the suction performance curve of the vacuum pump station;

[0025] Figure 3 It is the vibration and noise monitoring of vacuum pump station;

[0026] Figure 4 It is the fault diagnosis of vacuum pump station. DETAILED DESCRIPTION

[0027] In order to make the advantages and technical solutions of the present invention more clear and explicit, the present invention is described in detail below in conjunction with specific embodiments.

[0028] like Figure 1 As shown, a marine vacuum pump station performance monitoring and fault diagnosis platform proposed by the present invention mainly includes a vacuum terminal 1, a vacuum pump station 2, and a domestic sewage treatment device 14.

[0029] The vacuum collection system of domestic sewage on board ships is specifically composed of a vacuum toilet and a vacuum grey water valve at the vacuum terminal 1, to a vacuum pump station 2, and finally to a domestic sewage treatment device 4 for treatment and discharge. The vacuum pump station is the power source of the entire vacuum collection system.

[0030] The vacuum pump station 2 mainly includes an electronic flow meter 3, a stop valve 4, a vacuum container 5, a pressure sensor 6, a vacuum pressure gauge 7, a negative pressure controller 8, a low vacuum alarm negative pressure controller 9, a noise sensor 10, an upper vibration accelerometer 11, a shock absorber 12, a vacuum pump 13, and a lower vibration accelerometer 14. The pressure sensor 6 is responsible for measuring the pressure value of the vacuum container and transmitting it to the central control platform in real time. The negative pressure controller 8 is responsible for controlling the start and stop of the vacuum pump.

[0031] An electronic flow meter 3 and a stop valve 4 are arranged at the front end of the vacuum container 5, and a pressure sensor 6 and a vacuum pressure gauge 7 are arranged on the cylinder of the vacuum container 5. The electronic flow meter 3 monitors the suction flow of the vacuum pump station, the pressure sensor 6 measures the vacuum pressure value of the vacuum system, and the vacuum pressure gauge 7 is used to calibrate the pressure sensor 6.

[0032] A negative pressure controller 8 and a low vacuum alarm negative pressure controller 9 are arranged on the pipe system between the vacuum pump station 2 and the vacuum container 5 to respectively control the start and stop of the vacuum pump 13 and the low vacuum alarm.

[0033] The vacuum pump station 2 is a double-layer vibration isolation structure, and four vibration accelerometers (upper layer vibration accelerometer 11 and lower layer vibration accelerometer 14) are arranged above and below the shock absorber 12. A noise sensor 10 is arranged on the pump head of the vacuum pump 13.

[0034] The central console adopts the upper computer monitoring + PLC logic control mode, which is mainly responsible for collecting analog signals of electronic flow meter 3, pressure sensor 6, and vibration accelerometer, and can also send fault alarm signals to the superior system. The main contents displayed on the central console display include: vacuum pump suction performance curve, vacuum pump vibration and noise monitoring, and vacuum pump station fault diagnosis.

[0035] The suction performance curve of the vacuum pump station is as follows: Figure 2 As shown, the suction performance curve of the actual operation of the vacuum pump station is drawn, and the health status of the vacuum pump station is judged by comparing the deviation with the theoretical suction performance curve.

[0036] Vibration and noise monitoring of vacuum pump station Figure 3 As shown, the vibration acceleration and noise values ​​of the upper and lower layers of the vacuum pump are monitored and compared with the vibration and noise baseline values ​​of the vacuum pump. When they deviate from a certain threshold, the abnormal condition of the vacuum pump is judged.

[0037] Vacuum pump station fault diagnosis Figure 4 As shown, the fault information that prompts the crew mainly includes: vacuum pump motor overload, pipeline air tightness abnormality, vacuum pump impeller abnormality, vacuum pump bearing abnormality, vacuum pump shock absorber abnormality, and vacuum pump noise abnormality.

[0038] The vacuum pump station performance monitoring and fault diagnosis platform of the present invention realizes the intelligent operation of the domestic sewage vacuum collection system and monitors the health status of the vacuum pump station.

Claims

1. A marine vacuum pump station performance monitoring and fault diagnosis platform, characterized by: It includes a vacuum pump station, a vacuum container, a central console, sensors and test instruments. An electronic flowmeter and a stop valve are arranged at the front end of the vacuum container, and a pressure sensor is arranged on the cylinder of the vacuum container. The electronic flowmeter monitors the suction flow of the vacuum pump station respectively, and the pressure sensor measures the vacuum pressure value of the vacuum system. A shock absorber is arranged under the vacuum pump in the vacuum pump station, and four vibration accelerometers are arranged above and below the shock absorber. A noise sensor is arranged on the pump head of the vacuum pump. The central console collects analog signals from the electronic flowmeter, pressure sensor and vibration accelerometer, and at the same time sends a fault alarm signal to the superior system, draws a suction performance curve of the vacuum pump, and is used for vacuum pump vibration and noise monitoring and vacuum pump station fault diagnosis.

2. The marine vacuum pump station performance monitoring and fault diagnosis platform according to claim 1 is characterized in that: A pressure gauge is also provided on the vacuum container cylinder for calibrating the pressure sensor.

3. The marine vacuum pump station performance monitoring and fault diagnosis platform according to claim 1, characterized in that: The vacuum pump station has a double-layer vibration isolation structure.

4. The marine vacuum pump station performance monitoring and fault diagnosis platform according to claim 1, characterized in that: Two negative pressure controllers are installed on the pipe system between the vacuum pump station and the vacuum container to control the start and stop of the vacuum pump and the low vacuum alarm respectively.

5. The marine vacuum pump station performance monitoring and fault diagnosis platform according to claim 1, characterized in that: The central console adopts upper computer monitoring + PLC logic control mode.

6. The marine vacuum pump station performance monitoring and fault diagnosis platform according to claim 1, characterized in that: The suction performance curve of the vacuum pump station is plotted in the suction performance curve of the vacuum pump station in actual operation. By comparing the deviation with the theoretical suction performance curve, the health status of the vacuum pump station can be judged.

7. The marine vacuum pump station performance monitoring and fault diagnosis platform according to claim 1, characterized in that: The vibration and noise monitoring of the vacuum pump station is used to monitor the vibration acceleration and noise values ​​of the upper and lower layers of the vacuum pump, and compare them with the vibration and noise baseline values ​​of the vacuum pump. When they deviate from a certain threshold, the abnormal condition of the vacuum pump is judged.

8. The marine vacuum pump station performance monitoring and fault diagnosis platform according to claim 1, characterized in that: The fault diagnosis of the vacuum pump station is used to inform the crew of the fault information that has occurred, including: vacuum pump motor overload, pipeline air tightness abnormality, vacuum pump impeller abnormality, vacuum pump bearing abnormality, vacuum pump shock absorber abnormality, and vacuum pump noise abnormality.

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