CN217004080U - Hydraulic slip ring leakage state monitoring system - Google Patents
Hydraulic slip ring leakage state monitoring system Download PDFInfo
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Abstract
The utility model provides a hydraulic slip ring leakage state monitoring system, which 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 PLC data acquisition and processing system; 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 leakage 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 pressure signals and vibration signals acquired by the detection instrument system and processing and analyzing the signals; the wireless communication system is used for realizing data transmission between the detection instrument system and the PLC data acquisition 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. The technical scheme of the utility model can accurately find the leakage in real time so as to be convenient for timely processing, reduce the leakage amount and reduce the loss to the maximum extent.
Description
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
The hydraulic slip ring works under the working conditions of high pressure and large flow, and the condition of crude oil leakage often occurs in the oil transportation process. The factors causing leakage, such as seal aging, equipment manufacturing, installation quality, etc., are many and under the current conditions, complete leakage prevention is difficult to achieve. And because hydraulic pressure sliding ring workspace is marine, natural environment is abominable, unmanned management and control under the normal condition, and it is difficult in time to discover to leak, and this has not only caused huge direct and indirect economic loss, has still produced the pollution to the environment.
SUMMERY OF THE UTILITY MODEL
According to the technical problem, a leakage state monitoring system for a hydraulic slip ring is provided. The hydraulic slip ring leakage state monitoring system can accurately find leakage in real time so as to be convenient for timely processing, reduce the leakage amount and reduce the loss to the maximum extent.
The technical means adopted by the utility model are as follows:
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 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.
Furthermore, the wireless pressure sensors are arranged on pipelines passing through leak detection holes on two sides of the hydraulic slip ring, and each hydraulic slip ring is hermetically provided with two wireless pressure sensors; 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.
Furthermore, the PLC data acquisition and processing system comprises a UPS, a power module, a CPU, 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;
and the dynamic monitoring module is connected with the eddy current sensor and used for processing, analyzing and transmitting vibration signals.
Further, 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.
Further, 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 the 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.
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 detects the pressure of a sealing leakage medium and a main body vibration signal by using the pressure sensor and the vibration sensor, adopts a method combining direct leakage detection and vibration state identification, detects, analyzes, alarms and prewarns the working state of the hydraulic slip ring from two aspects of fault phenomenon and cause, monitors the working state of the hydraulic slip ring for conveying crude oil in real time, displays the leakage position and the leakage speed of the hydraulic slip ring, and prewarns according to the cause of leakage, reduces the loss caused by the fact that the crude oil leakage cannot be found in time, and reduces the danger and the labor intensity of operators for periodic bench climbing inspection at sea.
Based on the reasons, the utility model can be widely popularized in the fields of hydraulic slip ring leakage detection and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a system configuration diagram of the present invention.
Fig. 2 is a configuration diagram of a pressure sensor meter according to an embodiment of the present invention.
Fig. 3 is a configuration diagram of an eddy current sensor meter according to an embodiment of the present invention.
FIG. 4 is a flow chart of the system monitoring of the present invention.
In the figure: 1. detecting an instrument system; 1.1, a first wireless pressure sensor; 1.2, a second wireless pressure sensor; 1.3, a third wireless pressure sensor; 1.4, a fourth wireless pressure sensor; 1.5, a fifth wireless pressure sensor; 1.6, a sixth wireless pressure sensor; 1.7, a seventh wireless pressure sensor; 1.8, an eighth wireless pressure sensor; 1.9, a ninth wireless pressure sensor; 1.10, a tenth wireless pressure sensor; 1.11, an eleventh wireless pressure sensor; 1.12 a twelfth wireless pressure sensor; 1.13, a first eddy current sensor; 1.14, a second eddy current sensor; 2. a PLC data acquisition processing system; 2.1, UPS uninterrupted power source; 2.2, a power supply module; 2.3, CPU; 2.4, a first Ethernet communication module; 2.5, a second Ethernet communication module; 2.6, a third Ethernet communication module; 2.7 fourth Ethernet communication module; 2.8, a dynamic monitoring module; 3. a wireless communication system; 3.1, wireless gateway; 3.2, a wireless transmitter; 4. an upper monitoring system; 4.1, a switch; 4.2, an industrial personal computer; 4.3, a touch screen; 4.4, printer.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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 utility model, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
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 present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the 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 a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The technical scheme of the utility model is a system and a method for monitoring the leakage state of a hydraulic slip ring in the technical field of offshore oil engineering, which can monitor the crude oil leakage and related states of the hydraulic slip ring and provide digital and graphical display monitoring and alarming functions.
The sealing system of the slip ring is composed of top and bottom seals, the main seal and the auxiliary seal respectively form the sealing system of the whole slip ring by 3 seals, and if the first main seal of the slip ring fails, the second and third auxiliary seals play a role in medium sealing. The reasons for the sealing failure of the slip ring can be classified into sealing aging failure and abnormal wear failure caused by foreign matter abrasion due to crude oil impurities and body eccentricity, unbalance and misalignment. According to the hydraulic slip ring leakage state monitoring and recognizing device, the pressure sensor and the eddy current sensor are mounted for detecting, analyzing and displaying alarm aiming at leakage phenomena and reasons, and timely and accurate monitoring and recognition of the leakage state of the hydraulic slip ring are achieved. The pressure sensor directly detects leakage by measuring the change of a medium pressure signal, the eddy current sensor collects a vibration signal of equipment, processes the signal, extracts corresponding fault characteristics and combines a specific analysis method to identify the running state of the equipment, judge whether the equipment is in a fault state capable of causing leakage or not and give an early warning.
The specific scheme is as follows:
as shown in fig. 1, the present invention provides a hydraulic slip ring leakage state monitoring system, including: 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; in this embodiment, since the slip ring rotates irregularly due to sea conditions and wiring is inconvenient, a wireless detection mode is adopted. As shown in fig. 2, the wireless pressure sensors are arranged on the pipelines passing through the leak detection holes on the two sides of the hydraulic slip ring, each hydraulic slip ring is provided with two wireless pressure sensors in each sealing way, the pressure value of the leaked medium is measured, and the sealing leakage condition is directly detected through pressure change. As shown in fig. 3, 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, the vibration of the slip ring main body is measured, and whether the equipment is in a fault state that the sealing is abnormally worn due to unbalance, misalignment, eccentricity and the like is identified through processing and analyzing vibration signals;
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; in this embodiment, the PLC data acquisition and processing system includes a UPS uninterruptible power supply, a power module, a CPU, an ethernet communication module, and a dynamic monitoring module; wherein: the UPS is connected with the power module and used for providing 2-hour UPS for the PLC data acquisition and processing system under the condition of external power failure, and the backup of the PLC data acquisition and processing system and the transmission of important data are ensured; 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; and 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; 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 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, one wireless gateway is arranged on one side of each slip ring, the wireless gateways have configuration and equipment management functions, receive data sent by the 6 wireless transmitters on the side and transmit the data to 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. In this embodiment, the upper monitoring system includes a switch, an industrial personal computer, a touch screen, and a printer; wherein: the switch is used for finishing real-time interactive transmission of field data and industrial personal computer Ethernet data in the ocean engineering industrial environment; the touch screen has the characteristics of high stability, moisture resistance, vibration resistance, expandability and the like, and 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.
Example 1: the pressure sensor directly detects;
two wireless pressure sensors are respectively arranged on two sides of each seal of each slip ring, and as the upper part of each slip ring is provided with three seals and the lower part of each slip ring is provided with three seals, each slip ring is provided with 12 wireless pressure sensors 1.1-1.12 in total, as shown in figure 2.
12 sets of wireless pressure sensors 1.1 ~ 1.12 gather the field pressure signal in real time to through wireless transmitter 3.1 with detect signal conversion to digital signal, divide into two sets and send to wireless gateway 3.1, wireless gateway 3.1 receives all on-the-spot pressure signals of gathering, adopts TCP/IP protocol to transmit the on-the-spot signal to first ethernet communication module 2.4, first ethernet communication module 2.4 writes the on-the-spot test data into CPU2.3, see figure 1.
The CPU2.3 records the real-time detection data P1-Pn of the pressure sensors, calculates the leakage rates V1-Vn, with the calculation formula V being dP/dt, logically judges the data recorded and calculated at the time interval T at intervals of time T, determines that a leakage fault has occurred if all the recorded pressure data P1-Pn are greater than the preset leakage boundary condition Δ P, determines the leakage position according to the installation position and the number of 12 sets of wireless pressure sensors 1.1-1.12, calculates the rate of change a of the leakage rate being dV/dt, and determines the leakage trend.
The CPU2.3 carries out logic judgment on the result of the comprehensive vibration identification, transmits the logic analysis result of the comprehensive judgment and all data to the monitoring industrial personal computer 4.2 through the second Ethernet communication module 2.5, dynamically displays the monitored data and state on the monitoring industrial personal computer 4.2 in real time in a monitoring graph, a chart, a curve, a sound mode and the like, gives out leakage alarm or pre-alarm, and displays information such as the leakage position, the leakage reason, the real-time pressure value, a frequency spectrum curve, the leakage speed, the change trend of the leakage speed and the like.
Example 2: recognizing the vibration of the eddy current sensor;
each slip ring is provided with an eddy current sensor in the radial direction and the axial direction of the main bearing respectively, and the eddy current sensors are respectively a first eddy current sensor 1.13 and a second eddy current sensor 1.14 which are arranged at 90 degrees, as shown in figure 3. The first eddy current sensor 1.13 and the second eddy current sensor 1.14 collect vibration signals of the hydraulic slip ring main body in real time, convert the signals into electric signals through a preamplifier of the sensors, filter the electric signals, and transmit the electric signals to a dynamic monitoring module 2.8 of the PLC state monitoring substation, as shown in FIG. 1.
The dynamic monitoring module 2.8 receives vibration signals acquired on site, firstly, A/D conversion is carried out on data, and the vibration signals are converted into digital quantity signals from analog quantity signals; FFT (fast Fourier transform) and recording the actually measured time domain waveform and frequency domain waveform. Comparing and analyzing the actually measured waveform and a preset fault frequency spectrum, and judging whether a fault state occurs or not according to the fact whether the actually measured vibration frequency spectrum is in accordance with the preset unbalanced, non-centered and eccentric fault frequency spectrum or not. And fifthly, simultaneously sending data such as the waveform, the frequency spectrum, the analysis result and the like to the CPU2.3 through the fourth Ethernet communication module 2.7 and the third Ethernet communication module 2.6.
CPU2.3 carries on the logical judgement to the result of the comprehensive vibration identification and pressure detection, if there is unbalance, not centering, eccentric trouble but pressure detection does not leak the trouble, presume as and leak the early warning; and if the pressure detection has leakage faults while the pressure detection has unbalance, misalignment and eccentricity faults, setting the pressure detection as the leakage faults.
The second Ethernet communication module 2.5 transmits the logic analysis result and all data of the comprehensive judgment to the monitoring industrial personal computer 4.2, dynamically displays the monitored data and state on the monitoring industrial personal computer 4.2 in real time in the modes of monitoring pictures, graphs, curves, sounds and the like, sends out leakage alarm or pre-alarm, and displays the information of the leakage position, the leakage reason, the real-time pressure value, the frequency spectrum curve, the leakage speed, the change trend of the leakage speed and the like.
The utility model also provides a monitoring method based on the hydraulic slip ring leakage state monitoring system, which has the following principle: when hydraulic pressure sliding ring sealing failure took place to leak, the leakage medium that flows through in the measuring tube way, produced pressure, along with leaking the increase of quantity, the pressure value can crescent, and the leakage speed also changes along with it, and this application is through setting up wireless pressure sensor detection pressure signal, calculates the pressure variation speed simultaneously, and the direct monitoring hydraulic pressure sliding ring leaks and the speed of leaking. However, the pressure sensor detects data that leakage has occurred, and the cause of the leakage cannot be determined without an early warning function. The method comprises the steps of detecting vibration signals of equipment by arranging an eddy current sensor, comparing and analyzing time domain and frequency domain information detected by the equipment with a prestored fault frequency spectrum by signal processing, and identifying whether the hydraulic slip ring is in a fault state which can cause leakage such as unbalance, misalignment and eccentricity to perform early warning, namely monitoring and alarming the leakage state of the hydraulic slip ring by directly measuring leakage and identifying leakage cause. The specific method comprises the following steps:
s1, directly detecting by a pressure sensor; the specific implementation process of step S1 is as follows:
s11, inputting preset control parameters: inputting a control parameter leakage boundary condition delta P, monitoring time T and a sampling time interval delta T, wherein all parameters can be adjusted on an industrial personal computer according to actual production conditions;
s12, acquiring and recording real-time detection data of the pressure sensor: the detection data are collected through 12 sets of wireless pressure sensors 1.1-1.12 arranged on the hydraulic slip ring, detection signals are converted into digital signals through an integrated wireless transmitter 3.2 and are sent to a wireless gateway 3.1 in two groups, and the wireless gateway 3.2 receives all collected field pressure signals and transmits the signals to a CPU2.3 through a first Ethernet communication module 2.4;
s13, calculating the leakage speed: setting the acquired pressure parameter as P and the preset monitoring time as T, and calculating to obtain the leakage speed V as dP/dt;
s14, delay time T: recording a storage pressure value P and a leakage speed V at sampling time intervals delta T within the time T;
s15, CPU2.3 makes a logical decision: in the monitoring time interval T, whether all the recorded pressure data P are greater than the leakage boundary condition delta P or not is judged, if the conditions are not met, the system does not leak, the detection is continued, and no alarm is given; if the condition is met, the system leaks;
s16, calculating the change rate of the leakage speed: and (4) calculating the change rate a of the leakage speed to be dV/dt based on the leakage speed calculated in the step S13 and the preset monitoring time T, judging the leakage trend according to the value a, wherein the larger the value a is, the faster the leakage is, and the calculation is completed to enter a step S13.
S2, identifying the vibration of the eddy current sensor; the specific implementation process of step S2 is as follows:
s21, inputting preset parameters: inputting monitoring time T, a sampling time interval delta T, a normal working reference frequency spectrum, an unbalanced fault frequency spectrum, an misaligned fault frequency spectrum, an eccentric fault frequency spectrum, reference and fault frequency spectrum parameters, wherein the reference and fault frequency spectrum parameters are used for being compared with a real-time frequency spectrum in the working process;
s22, acquiring and recording real-time detection data of the eddy current sensor: detection data are collected through eddy current sensors 1.13-1.14 arranged on the radial direction and the axial direction of the hydraulic slip ring, and signals are converted into electric signals through a preamplifier integrated with the sensors, filtered and transmitted to a dynamic monitoring module 2.8;
s23, the dynamic monitoring module 2.8 receives the vibration signal collected on site, and A/D conversion and FFT conversion are carried out on the data, and the signal is converted into a frequency domain signal from a time domain signal;
s24, recording the time domain waveform of the real-time vibration signal at sampling time intervals delta T within monitoring time T;
s25, recording the frequency domain waveform of the real-time vibration signal at sampling time intervals delta T within the monitoring time T;
s26, logic analysis is performed in CPU 2.3: in the monitoring time period T, comparing and analyzing the measured frequency spectrum and the fault frequency spectrum, judging whether fault states of unbalance, misalignment and eccentricity exist or not, and if the fault states do not exist, continuously detecting; if there is a failure, the flow proceeds to step S23.
And S3, carrying out comprehensive analysis logic judgment on the results of the pressure detection and the vibration identification. The specific implementation process of step S3 is as follows:
s31, if there is pressure detection leakage fault, it shows that the hydraulic slip ring has leaked, the system sends out leakage alarm, the monitored data and state are displayed dynamically in real time on the monitoring industrial control computer 4.2 in the way of monitoring graph, chart, curve and sound, the leakage alarm is sent out, and the leakage position, real-time pressure value, leakage speed and its variation trend information are displayed;
s32, if there is only one or other combination fault of unbalance, misalignment and eccentricity, but there is no leakage fault in pressure detection, the system sends out leakage early warning, the monitored data and state are displayed dynamically in real time on the monitoring industrial control computer 4.2 in the mode of monitoring picture, graph, curve and sound, leakage pre-warning is sent out, and the pre-warning reason, frequency spectrum curve and real-time pressure numerical value information are displayed;
s33, if the pressure detection and vibration identification alarm at the same time, the system sends out leakage alarm, real-time and dynamic display the monitored data and state on the monitoring industrial control computer 4.2 in the way of monitoring graph, chart, curve and sound, and sends out leakage alarm, and displays the leakage position, the leakage reason, the real-time pressure value, the frequency spectrum curve, the leakage speed and the variation trend information of the leakage speed.
In summary, the hydraulic slip ring leakage state monitoring system and the method provided by the utility model realize monitoring and alarming on hydraulic slip ring leakage, and the alarming mode is graphical display and sound alarming to prompt production maintenance personnel to accurately find leakage in real time so as to process in time, reduce leakage amount and reduce loss to the maximum extent.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114216065A (en) * | 2021-12-27 | 2022-03-22 | 大连华锐重工集团股份有限公司 | Hydraulic slip ring leakage state monitoring system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114216065A (en) * | 2021-12-27 | 2022-03-22 | 大连华锐重工集团股份有限公司 | Hydraulic slip ring leakage state monitoring system and method |
| CN114216065B (en) * | 2021-12-27 | 2023-08-22 | 大连华锐重工集团股份有限公司 | Hydraulic slip ring leakage state monitoring system and method |
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