CN217004080U - Hydraulic slip ring leakage state monitoring system - Google Patents

Abstract

The utility model provides a hydraulic slip ring leakage state monitoring system. The utility model system includes a detection instrument system, a PLC data acquisition and processing system, a wireless communication system and an upper monitoring system; the detection instrument system includes a wireless pressure sensor and an eddy current sensor, The wireless pressure sensor is used to measure the pressure signal of the leaking medium, and the eddy current sensor is used to measure the vibration signal of the main body of the slip ring; the PLC data acquisition and processing system is used to obtain the pressure signal and vibration signal collected by the detection instrument system, and process and analyze the signal. ;The wireless communication system is used to realize the data transmission between the detection instrument system and the PLC data acquisition and processing system; the upper monitoring system is used to obtain the analysis results of the PLC data acquisition and processing system, and give early warning, alarm and real-time to the leakage of the hydraulic slip ring. Dynamic display. The technical scheme of the utility model can accurately find the leakage in real time, so as to deal with it in time, reduce the leakage amount and minimize the loss.

Description

A hydraulic slip ring leakage state monitoring system

technical field

The utility model relates to the technical field of hydraulic slip ring leakage detection, in particular to a hydraulic slip ring leakage state monitoring system.

Background technique

Hydraulic slip rings work under high pressure and large flow conditions. During oil transportation, crude oil leakage often occurs. There are many factors that cause leakage, such as sealing aging, equipment manufacturing, installation quality, etc. Under the current conditions, it is difficult to achieve no leakage at all. Moreover, because the working area of the hydraulic slip ring is at sea, the natural environment is harsh, and there is no control and control under normal circumstances, and the leakage is not easy to be discovered in time, which not only causes huge direct and indirect economic losses, but also pollutes the environment.

Utility model content

According to the technical problem proposed above, a hydraulic slip ring leakage state monitoring system is provided. The leakage state monitoring system of the hydraulic slip ring of the utility model can accurately find the leakage in real time, so as to deal with it in time, reduce the leakage amount and minimize the loss.

The technical means adopted by the utility model are as follows:

A hydraulic slip ring leakage state monitoring system, comprising: a detection instrument system, a PLC data acquisition and processing system, a wireless communication system and an upper monitoring system; wherein:

The detection instrument system includes a wireless pressure sensor and an eddy current sensor, the wireless pressure sensor is used to measure the pressure signal of the leaking medium, and the eddy current sensor is used to measure the vibration signal of the main body of the slip ring;

The PLC data acquisition and processing system is used to acquire the pressure signal and the vibration signal collected by the detection instrument system, and to process and analyze the signals;

The wireless communication system is used to realize data transmission between the detection instrument system and the PLC data acquisition and processing system;

The upper monitoring system is used to obtain the analysis results of the PLC data acquisition and processing system, and to give early warning, alarm and real-time dynamic display to the leakage of the hydraulic slip ring.

Further, the wireless pressure sensor is arranged on the pipeline passing through the leak detection holes on both sides of the hydraulic slip ring, and two wireless pressure sensors are arranged for each seal of each set of hydraulic slip rings; the eddy current sensor is arranged at 90° in each set of The radial and axial directions of the hydraulic slip ring main bearing.

Further, the PLC data acquisition and processing system includes a UPS uninterruptible power supply, a power supply module, a CPU, an Ethernet communication module and a dynamic monitoring module; wherein:

The UPS uninterruptible power supply is connected to a power supply module, and is used to provide an uninterruptible power supply for the PLC data acquisition and processing system in the case of external power failure, so as to ensure the backup of the PLC data acquisition and processing system and the transmission of important data;

The power supply module is connected to the CPU, the Ethernet communication module and the dynamic monitoring module, and is used to provide power for the CPU, the Ethernet communication module and the dynamic monitoring module;

The CPU is used to process and analyze the pressure signal and the vibration signal collected by the detection instrument system;

The Ethernet communication module is connected to the wireless communication system, the upper monitoring system and the dynamic monitoring module, and is used to realize the PLC data acquisition and processing system and the wireless communication system, the upper monitoring system and the dynamic monitoring module Two-way data transmission between;

The dynamic monitoring module is connected to the eddy current sensor for processing, analyzing and transmitting vibration signals.

Further, the wireless communication system includes a wireless transmitter and a wireless gateway; wherein:

The wireless transmitter, integrated on the pressure sensor, is used to process and convert the collected pressure sensor data into a digital signal, and transmit it to the wireless gateway through the Ethernet communication module;

The wireless gateway, arranged on both sides of each set of slip rings, has the functions of configuration and equipment management, receives the data sent by the wireless transmitter on the local side and transmits it to the PLC data acquisition and processing system.

Further, the upper monitoring system includes a switch, a touch screen, an industrial computer and a printer; wherein:

The switch is used to complete the real-time interactive transmission of the field data and the Ethernet data of the industrial computer in the marine engineering industrial environment;

The touch screen is used to control industrial equipment and man-machine interface;

The industrial computer is used for data storage, data monitoring, data analysis and data diagnosis;

The printer is used for printing reports and documents.

Compared with the prior art, the utility model has the following advantages:

The hydraulic slip ring leakage state monitoring system provided by the utility model uses the pressure sensor and the vibration sensor to detect the pressure of the sealing leakage medium and the vibration signal of the main body, and adopts the method of combining direct leakage detection and vibration state identification. In terms of detection, analysis, alarm and early warning of the working state of the hydraulic slip ring, real-time monitoring of the working state of the hydraulic slip ring conveying crude oil, display of the leakage position and leakage speed of the hydraulic slip ring, and early warning according to the cause of the leakage, reducing the number of failures caused by the leakage. The loss caused by the oil leakage can be detected in time, and the danger and labor intensity of the operator's regular sea staging inspection can be reduced.

Based on the above reasons, the utility model can be widely promoted in the fields of hydraulic slip ring leakage detection and the like.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

Fig. 1 is the system structure diagram of the present invention.

FIG. 2 is a configuration diagram of a pressure sensor instrument provided by an embodiment of the present invention.

FIG. 3 is a configuration diagram of an eddy current sensor meter provided by an embodiment of the present invention.

Fig. 4 is the system monitoring flow chart of the utility model.

In the figure: 1. Detection instrument system; 1.1, The first wireless pressure sensor; 1.2, The second wireless pressure sensor; 1.3, The third wireless pressure sensor; 1.4, The fourth wireless pressure sensor; 1.5, The fifth wireless pressure sensor; 1.6 , sixth wireless pressure sensor; 1.7, seventh wireless pressure sensor; 1.8, eighth wireless pressure sensor; 1.9, ninth wireless pressure sensor; 1.10, tenth wireless pressure sensor; 1.11, eleventh wireless pressure sensor; 1.12 Twelve wireless pressure sensors; 1.13, the first eddy current sensor; 1.14, the second eddy current sensor; 2, the PLC data acquisition and processing system; 2.1, the UPS uninterruptible power supply; 2.2, the power module; 2.3, the CPU; 2.4, the first Ethernet communication module; 2.5, second Ethernet communication module; 2.6, third Ethernet communication module; 2.7, fourth Ethernet communication module; 2.8, dynamic monitoring module; 3, wireless communication system; 3.1, wireless gateway; 3.2, Wireless transmitter; 4, upper monitoring system; 4.1, switch; 4.2, industrial computer; 4.3, touch screen; 4.4, printer.

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict. The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In order to make the purposes, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described above are only a part of the embodiments of the present invention, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application or uses in any way. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that the terminology used herein is for describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that, for convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only and not limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. The orientation or positional relationship is usually based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and these orientations do not indicate and imply the indicated device unless otherwise stated. Or elements must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the present invention: the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For ease of description, spatially relative terms, such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under its device or structure". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood To limit the scope of protection of the present invention.

The technical scheme of the utility model is aimed at the system and method for monitoring the leakage state of hydraulic slip rings in the technical field of offshore petroleum engineering, which can monitor the oil leakage of the hydraulic slip rings and related states, and provides monitoring and alarm functions of digital and graphic display.

The sealing system of the slip ring consists of the top and bottom seals, and the whole sealing system of the slip ring is composed of three main and auxiliary seals respectively. If the first main seal of the slip ring fails, the second and third auxiliary seals play the role of medium sealing. effect. The causes of slip ring seal failure can be divided into seal aging failure, foreign body wear caused by crude oil impurities, and abnormal wear failure caused by body eccentricity, imbalance and misalignment. According to the phenomenon and cause of leakage, the application installs pressure sensors and eddy current sensors to detect, analyze and display alarms, so as to realize timely and accurate monitoring and identification of the leakage state of hydraulic slip rings. Among them, the pressure sensor directly detects the leakage by measuring the change of the medium pressure signal, and the eddy current sensor collects the vibration signal of the equipment, processes the signal, extracts the corresponding fault features, and uses a specific analysis method to identify the operating state of the equipment and determine whether the equipment is in a condition that can cause Leakage fault status and early warning.

The specific plans are as follows:

As shown in Figure 1, the utility model provides a hydraulic slip ring leakage state monitoring system, including: a detection instrument system, a PLC data acquisition and processing system, a wireless communication system and an upper monitoring system; wherein:

The detection instrument system includes a wireless pressure sensor and an eddy current sensor, the wireless pressure sensor is used to measure the pressure signal of the leaking medium, and the eddy current sensor is used to measure the vibration signal of the main body of the slip ring; Due to the irregular rotation of sea conditions and inconvenient wiring, wireless detection is adopted. As shown in Figure 2, the wireless pressure sensor is arranged on the pipeline passing through the leak detection holes on both sides of the hydraulic slip ring, and two wireless pressure sensors are arranged for each seal of each hydraulic slip ring to measure the pressure value of the leaking medium, and pass the pressure Changes directly detect seal leaks. As shown in Figure 3, the eddy current sensor is arranged at 90° in the radial and axial directions of each set of hydraulic slip ring main bearings to measure the vibration of the main body of the slip ring, and through the processing and analysis of the vibration signal, identify whether the equipment is in Unbalance, misalignment, eccentricity, etc. will cause abnormal wear of the seal;

The PLC data acquisition and processing system is used to obtain the pressure signal and vibration signal collected by the detection instrument system, and to process and analyze the signals; in this embodiment, the PLC data acquisition and processing system includes UPS, A power supply module, a CPU, an Ethernet communication module and a dynamic monitoring module; wherein: the UPS uninterruptible power supply is connected to a power supply module for providing a 2-hour uninterruptible power supply for the PLC data acquisition and processing system in the event of an external power supply failure , to ensure the backup of the PLC data acquisition and processing system and the transmission of important data; the power module, connected to the CPU, the Ethernet communication module and the dynamic monitoring module, is used to provide power for the CPU, the Ethernet communication module and the dynamic monitoring module; The CPU is used to process and analyze the pressure signal and the vibration signal collected by the detection instrument system; the Ethernet communication module is connected to the wireless communication system, the upper monitoring system and the dynamic monitoring module, and is used to realize all the Bidirectional data transmission between the PLC data acquisition and processing system and the wireless communication system, the upper monitoring system and the dynamic monitoring module; the dynamic monitoring module is connected to the eddy current sensor for processing, analyzing and transmitting vibration Signal.

The wireless communication system is used to realize data transmission between the detection instrument system and the PLC data acquisition and processing system; in this embodiment, the wireless communication system includes a wireless transmitter and a wireless gateway; wherein: The wireless transmitter is integrated on the pressure sensor, and is used to process and convert the collected pressure sensor data into digital signals, and transmit them to the wireless gateway through the Ethernet communication module; the wireless gateway is set in each On both sides of the slip ring, one wireless gateway is set on each side, which has the function of configuration and equipment management, and receives the data sent by the six wireless transmitters on the side and transmits it to the PLC data acquisition and processing system.

The upper monitoring system is used to obtain the analysis results of the PLC data acquisition and processing system, and to give early warning, alarm and real-time dynamic display to the leakage of the hydraulic slip ring. In this embodiment, the upper monitoring system includes a switch, an industrial computer, a touch screen and a printer; wherein: the switch is used to complete the real-time interactive transmission of field data and the Ethernet data of the industrial computer in the marine engineering industrial environment; The touch screen has the characteristics of high stability, moisture resistance, vibration resistance, scalability, etc., and is used to control industrial equipment and human-machine interfaces; the industrial computer is used for data storage, data monitoring, data analysis and data diagnosis; The printer described above is used to print reports and documents.

Embodiment 1: direct detection by pressure sensor;

Two wireless pressure sensors are set on both sides of each seal of each set of slip rings. Since three seals are set on the upper part of the slip ring and three seals are set on the lower part, there are 12 sets of wireless pressure sensors 1.1 to 1.12 in each set of slip rings. See Figure 2.

12 sets of wireless pressure sensors 1.1~1.12 collect on-site pressure signals in real time, and convert the detection signals into digital signals through wireless transmitter 3.1, and send them to wireless gateway 3.1 in two groups. Wireless gateway 3.1 receives all collected on-site pressure signals, The on-site signal is transmitted to the first Ethernet communication module 2.4 by using the TCP/IP protocol, and the first Ethernet communication module 2.4 writes the on-site detection data into the CPU 2.3, as shown in FIG. 1 .

CPU2.3 records the real-time detection data P1~Pn of the pressure sensor, and calculates the leakage velocity V1~Vn at the same time. All the recorded pressure data P1~Pn are greater than the preset leakage boundary condition ΔP, then it is determined that a leakage fault has occurred, and the leakage position is determined according to the installation positions and numbers of the 12 sets of wireless pressure sensors 1.1~1.12, and the leakage velocity is calculated at the same time. The rate of change a=dV/dt is used to judge the trend of leakage.

CPU2.3 makes logical judgment based on the results of vibration identification, and transmits the logical analysis results and all data of the comprehensive judgment to the monitoring industrial computer 4.2 through the second Ethernet communication module 2.5, and uses monitoring diagrams, charts, and curves on the monitoring industrial computer 4.2. , sound and other methods to dynamically display the monitored data and status in real time, issue a leak alarm or pre-alarm, and display the leak location, leak cause, real-time pressure value, spectrum curve, leak velocity, leak velocity change trend and other information.

Embodiment 2: Vibration identification of eddy current sensor;

Each set of slip rings is provided with an eddy current sensor in the radial and axial directions of the main bearing, respectively the first eddy current sensor 1.13 and the second eddy current sensor 1.14, arranged at 90°, see Figure 3. The first eddy current sensor 1.13 and the second eddy current sensor 1.14 collect the vibration signal of the main body of the hydraulic slip ring in real time, convert the signal into an electrical signal through the sensor's preamplifier and filter it, and transmit it to the PLC state monitoring substation for dynamic monitoring Module 2.8, see Figure 1.

The dynamic monitoring module 2.8 receives the vibration signal collected on site, ① performs A/D conversion on the data, and converts the vibration signal from an analog signal into a digital signal; ② FFT transform (fast Fourier transform) ③ Record the measured time domain waveform and frequency domain waveform. ④ Compare and analyze the measured waveform and the preset fault spectrum, and identify whether there is a fault state according to whether the measured vibration spectrum matches the preset unbalance, misalignment, and eccentric fault spectrum as judgment. ⑤ At the same time, data such as waveform, spectrum and analysis result are sent to CPU 2.3 through the fourth Ethernet communication module 2.7 and the third Ethernet communication module 2.6.

CPU2.3 makes a logical judgment based on the results of vibration identification and pressure detection. If there are unbalance, misalignment, and eccentricity faults but there is no leakage fault in pressure detection, it will be set as a leak warning; if there are unbalance, misalignment, and eccentricity faults at the same time If there is a leakage fault in the pressure detection, it is set as a leakage fault.

Through the second Ethernet communication module 2.5, the logical analysis results of the comprehensive judgment and all data are transmitted to the monitoring industrial computer 4.2, and the monitored data and data are dynamically displayed in real time on the monitoring industrial computer 4.2 in the form of monitoring diagrams, charts, curves, sounds, etc. status, issue leak alarm or pre-alarm, and display leak location, leak cause, real-time pressure value, spectrum curve, leak speed, change trend of leak speed and other information.

The utility model also provides a monitoring method based on the above-mentioned hydraulic slip ring leakage state monitoring system. As the amount increases, the pressure value will gradually increase, and the leakage rate will also change accordingly. In this application, the wireless pressure sensor is set to detect the pressure signal, and the pressure change rate is calculated at the same time to directly monitor whether the hydraulic slip ring leaks and the rate of leakage. However, the pressure sensor detects the data that the leak has occurred, and has no early warning function, nor can it determine the cause of the leak. Since the occurrence and development of equipment failures will cause changes in the frequency structure of vibration signals, the frequency information can be analyzed to explain the causes of equipment failures. In this application, eddy current sensors are installed to detect equipment vibration signals, and through signal processing, the equipment can be detected. Compare and analyze the information in the time domain and frequency domain with the pre-stored fault spectrum, identify whether the hydraulic slip ring is in unbalanced, misaligned, eccentric and other fault states that will lead to leakage and give early warning, that is, through the direct measurement of leakage and the cause of leakage Monitoring and alarming of hydraulic slip ring leakage status from two aspects of identification. The specific method is as follows:

S1, the pressure sensor is directly detected; the specific implementation process of the step S1 is as follows:

S11. Input preset control parameters: input control parameters leakage boundary condition ΔP, monitoring time T, sampling time interval Δt, all parameters can be adjusted on the industrial computer according to the actual production situation;

S12. Acquire and record the real-time detection data of the pressure sensor: the detection data is collected by 12 sets of wireless pressure sensors 1.1-1.12 installed on the hydraulic slip ring, and the integrated wireless transmitter 3.2 converts the detection signal into a digital signal, which is divided into two The group is sent to the wireless gateway 3.1, and the wireless gateway 3.2 receives all the collected on-site pressure signals and transmits them to the CPU2.3 through the first Ethernet communication module 2.4;

S13. Calculate the leak rate: set the collected pressure parameter as P, the preset monitoring time as T, and calculate the leak rate V=dP/dt;

S14. Delay time T: within the time T, record the stored pressure value P and the leakage speed V at every sampling time interval Δt;

S15. Make a logical judgment in CPU2.3: within the monitoring period T, whether all the recorded pressure data P are greater than the leakage boundary condition ΔP, if the condition is not met, the system does not leak, and the detection continues without an alarm; if If the conditions are met, the system leaks;

S16. Calculate the rate of change of the leakage rate: Based on the leakage rate calculated in step S13 and the preset monitoring time T, calculate the rate of change of the leakage rate a=dV/dt, and judge the leakage trend according to the value of a. The faster the leak is, the calculation is complete and goes to step S13.

S2, eddy current sensor vibration identification; the specific implementation process of step S2 is as follows:

S21. Input preset parameters: input monitoring time T, sampling time interval Δt, normal working reference spectrum, unbalanced fault spectrum, misalignment fault spectrum, eccentric fault spectrum, reference and fault spectrum parameters, the reference and fault spectrum parameters are used in the Compare with real-time spectrum during work;

S22. Acquire and record the real-time detection data of the eddy current sensor: the detection data is collected by the eddy current sensors 1.13-1.14 installed on the radial and axial directions of the hydraulic slip ring, and the preamplifier integrated with the sensor converts the signal into an electrical signal and After filtering, it is transmitted to the dynamic monitoring module 2.8;

S23. The dynamic monitoring module 2.8 receives the vibration signal collected on site, performs A/D conversion and FFT transformation on the data, and converts the signal from a time domain signal into a frequency domain signal;

S24, within the monitoring time T, record the real-time vibration signal time domain waveform every sampling time interval Δt;

S25, within the monitoring time T, record the real-time vibration signal frequency domain waveform every sampling time interval Δt;

S26. Carry out logical analysis in CPU2.3: within the monitoring period T, compare and analyze the measured spectrum and the fault spectrum to see if there is a fault state of unbalance, misalignment, or eccentricity. If there is no fault, continue to detect; if there is a fault , and go to step S23.

S3. Comprehensively analyze and logically judge the results of pressure detection and vibration identification. The specific implementation process of the step S3 is as follows:

S31. If there is a pressure detection leakage fault, it means that the hydraulic slip ring has leaked, the system will issue a leakage alarm, and the monitored data and status will be dynamically displayed in real time on the monitoring industrial computer 4.2 in the form of monitoring graphs, graphs, curves and sounds, and a leak will be issued. Alarm, and display leakage position, real-time pressure value, leakage speed and its change trend information;

S32. If there is only one or other combined faults of unbalance, misalignment, eccentricity, but there is no leakage fault in the pressure detection, the system will issue a leakage warning, and monitor the graph, graph, curve, and sound in real time on the monitoring industrial computer 4.2. Dynamically display the monitored data and status, issue a leak pre-alarm, and display the cause of the pre-alarm, spectrum curve, and real-time pressure value information;

S33. If the pressure detection and vibration identification alarm at the same time, the system will issue a leakage alarm, and the monitored data and status will be dynamically displayed in real time on the monitoring IPC 4.2 in the form of monitoring graphs, graphs, curves, and sounds, and a leakage alarm will be issued, and the leakage will be displayed. Location, leak cause, real-time pressure value, spectrum curve, leak velocity, leak velocity change trend information.

To sum up, through the hydraulic slip ring leakage state monitoring system and method provided by the utility model, the monitoring and alarming of the hydraulic slip ring leakage can be realized. Leaks for timely disposal, reducing leakage and minimizing losses.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the various embodiments of the present utility model Scope of technical solutions.

Claims (4)

1. A hydraulic slip ring leak condition monitoring system, comprising: the system comprises a detection instrument system, a PLC data acquisition and processing system, a wireless communication system and an upper monitoring system; wherein:

the detection instrument system comprises a wireless pressure sensor and an eddy current sensor, wherein the wireless pressure sensor is used for measuring a pressure signal of a leaked medium, and the eddy current sensor is used for measuring a vibration signal of the slip ring main body;

the PLC data acquisition and processing system is used for acquiring the pressure signal and the vibration signal acquired by the detection instrument system and processing and analyzing the signals;

the PLC data acquisition and processing system comprises a UPS (uninterrupted power supply), a power module, a CPU (central processing unit), an Ethernet communication module and a dynamic monitoring module; wherein:

the UPS is connected with the power supply module and used for providing an uninterrupted power supply for the PLC data acquisition and processing system under the condition of external power supply failure so as to ensure the backup of the PLC data acquisition and processing system and the transmission of important data;

the power supply module is connected with the CPU, the Ethernet communication module and the dynamic monitoring module and is used for providing power for the CPU, the Ethernet communication module and the dynamic monitoring module;

the CPU is used for processing and analyzing the pressure signal and the vibration signal acquired by the detection instrument system;

the Ethernet communication module is connected with the wireless communication system, the upper monitoring system and the dynamic monitoring module and is used for realizing the data bidirectional transmission between the PLC data acquisition and processing system and the wireless communication system, the upper monitoring system and the dynamic monitoring module;

the dynamic monitoring module is connected with the eddy current sensor and used for processing, analyzing and transmitting vibration signals;

the wireless communication system is used for realizing data transmission between the detection instrument system and the PLC data acquisition and processing system;

and the upper monitoring system is used for acquiring the analysis result of the PLC data acquisition and processing system, and carrying out early warning, alarming and real-time dynamic display on the leakage condition of the hydraulic slip ring.

2. The hydraulic slip ring leakage state monitoring system according to claim 1, wherein the wireless pressure sensors are arranged on the pipeline passing through leak detection holes on two sides of the hydraulic slip ring, and each set of hydraulic slip ring is provided with two wireless pressure sensors per seal; the eddy current sensors are arranged on the radial direction and the axial direction of each set of hydraulic slip ring main bearing in an angle of 90 degrees.

3. The hydraulic slip ring leakage status monitoring system of claim 1, wherein the wireless communication system comprises a wireless transmitter and a wireless gateway; wherein:

the wireless transmitter is integrated on the pressure sensor and used for processing and converting the acquired pressure sensor data into a digital signal and transmitting the digital signal to the wireless gateway through the Ethernet communication module;

the wireless gateways are arranged on two sides of each slip ring, have configuration and equipment management functions, receive data sent by the wireless transmitter on the side and transmit the data to the PLC data acquisition and processing system.

4. The hydraulic slip ring leakage state monitoring system according to claim 1, wherein the upper monitoring system comprises a switch, a touch screen, an industrial personal computer and a printer; wherein:

the switch is used for finishing real-time interactive transmission of field data and industrial personal computer Ethernet data in an ocean engineering industrial environment;

the touch screen is used for controlling industrial equipment and a human-computer interface;

the industrial personal computer is used for data storage, data monitoring, data analysis and data diagnosis;

the printer is used for printing reports and files.

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