CN112460325A - Valve sound wave monitoring system and method - Google Patents
Valve sound wave monitoring system and method Download PDFInfo
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- CN112460325A CN112460325A CN202011325202.5A CN202011325202A CN112460325A CN 112460325 A CN112460325 A CN 112460325A CN 202011325202 A CN202011325202 A CN 202011325202A CN 112460325 A CN112460325 A CN 112460325A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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Abstract
The invention discloses a valve sound wave monitoring system and a method; the system comprises: a valve installed in the fluid pipe; the acoustic wave sensor is arranged at the position corresponding to the valve and used for acquiring acoustic wave signals at the position corresponding to the valve and transmitting the acoustic wave signals to the signal transmission device; the signal transmission device is used for receiving the sound wave signals collected by the sound wave sensor and sending the sound wave signals to the sound wave data analysis platform; the acoustic wave data analysis platform is used for receiving and analyzing the acoustic wave signals uploaded by the signal transmission device; the analysis specifically comprises: analyzing one or more of the working state of the valve, analyzing whether the valve leaks or leaks inwards, correcting the opening of the valve, monitoring the flow of the valve and analyzing whether the valve vibrates. The invention realizes real-time continuous online monitoring of the pipe network and the valve by the relatively cheap acoustic wave sensor, and has low cost, high accuracy and high precision.
Description
Technical Field
The invention relates to the technical field of valve monitoring, in particular to a valve sound wave monitoring system and a valve sound wave monitoring method.
Background
The valve is used as a general mechanical part and has the functions of stopping, shunting, regulating and the like; the demand relates to the basic fields of petrochemical industry, electric power, traffic, food and the like; the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. However, the valve is often out of work and leakage is caused due to various reasons such as corrosion, aging and the like, and safety accidents are easily caused if the valve cannot be processed in time; especially, most of urban fluid pipelines are buried under the ground and are difficult to monitor, and the faults of the valves are often difficult to find.
Therefore, the state of the valve is effectively monitored in time, problems are found in time, early warning/alarming is carried out, and the valve safety monitoring system has great significance for safety production.
Disclosure of Invention
The invention aims to provide a valve sound wave monitoring system and a valve sound wave monitoring method, which aim to solve the technical problem that the prior art cannot monitor a valve in an underground fluid pipeline in real time.
In order to achieve the purpose, the invention adopts the following technical scheme:
a valve acoustic monitoring system comprising:
a valve installed in the fluid pipe;
the acoustic wave sensor is arranged at the position corresponding to the valve and used for acquiring acoustic wave signals at the position corresponding to the valve and transmitting the acoustic wave signals to the signal transmission device;
the signal transmission device is used for receiving the sound wave signals collected by the sound wave sensor and sending the sound wave signals to the sound wave data analysis platform;
the acoustic wave data analysis platform is used for receiving and analyzing the acoustic wave signals uploaded by the signal transmission device; the analysis specifically comprises: analyzing one or more of the working state of the valve, analyzing whether the valve leaks or leaks inwards, correcting the opening of the valve, monitoring the flow of the valve and analyzing whether the valve vibrates.
The invention further improves the following steps: the valve is a stop valve, an on-off valve, a regulating valve, a balance valve or a ball valve.
The invention further improves the following steps: the sound wave sensor is any one or combination of a listening device, a pickup, a micro displacement electric signal sound sensor, a surface sound wave sensor, a dynamic pressure sensor, a sound wave frequency sensor, a sound wave sound pressure sensor, a sound wave sound intensity sensor or a sound wave sound power sensor.
The invention further improves the following steps: the surface acoustic wave sensor is specifically any one or combination of a Rayleigh wave sensor, an optical fiber sensor, a piezoelectric array sensor, a tangential horizontal plate mode sensor, a lamb wave sensor or a love wave sensor.
The invention further improves the following steps: the sound wave sensor is arranged inside or outside the valve and close to the valve core.
The invention further improves the following steps: the acoustic wave sensor is provided with an ID code, and the ID code corresponds to a geographic information code of the geographic position of the acoustic wave sensor; and geographic information coding information and model information of the corresponding valve are added when the sound wave sensor transmits the collected sound wave signals.
The invention further improves the following steps: the acoustic wave data analysis platform further comprises a display unit; the display unit is used for displaying the position of each valve and the corresponding sound wave signal.
The invention further improves the following steps: the valve is a regulating valve, and the flow of the valve is obtained by analyzing the sound wave data analysis platform through the following method:
and the acoustic wave data analysis platform calculates the flow of the regulating valve under the condition of the pressure before the given valve by utilizing a pre-fitted correlation formula of the acoustic wave signals and the flow of the valve of the type to be analyzed under the condition of the pressure before the given valve.
A valve sound wave monitoring method specifically comprises the following steps:
s1: arranging an acoustic wave sensor at the position of a valve of the fluid pipeline;
s2: encoding geographic information of each valve device provided with the acoustic wave sensor;
s3: the sound wave sensor transmits the collected sound wave signals to the sound wave monitoring and analyzing platform through the signal transmission device;
s4: outputting the analysis result of the sound wave monitoring and analyzing platform to a computer simulation model of a pipeline or a pipe network with geographic information data, and visually displaying the sound wave monitoring result of the valve in a pipe network simulation graph form;
s5: the sound wave monitoring and analyzing platform utilizes the continuously recorded sound wave signals to correlate with the running state information of the corresponding valve, analyzes the working state of the valve, analyzes whether the valve leaks or leaks inwards, corrects the opening of the valve, and monitors the flow of the valve or analyzes whether the valve vibrates.
Compared with the prior art, the invention has the following beneficial effects:
1) the online leakage monitoring of the pipe network and the valve is realized in real time and continuously through the relatively cheap sound wave sensor, the cost is low, the failure rate is low, the detection rate is high, and the positioning can be accurate to 0.5 meter.
2) According to the structural characteristics of the valve, the acoustic wave sensor is directly additionally arranged in the structure of the valve, so that the real-time and low-cost online monitoring of the fluid equipment is realized.
3) The sound wave sensor not only realizes the monitoring of the leakage of the pipeline and the valve, but also can realize the real-time monitoring of the states of the start, the stop, the fault, the leakage and the like of the valve by comparing and analyzing sound wave signals under different valve operating states.
4) For the regulating valve, the corresponding relation between the acoustic wave signals and the flow under the conditions of the pre-valve pressure and the valve opening determined by calibration of the calibration platform is utilized, and the acoustic wave sensor can be utilized to realize the coarse measurement of the valve flow with low price.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a valve acoustic monitoring system according to the present invention;
FIG. 2 is a schematic structural view of a regulator valve according to an embodiment of the present invention;
FIG. 3 is a schematic view of the opening of the regulating valve according to the embodiment of the present invention; wherein, the opening degree of fig. 3(a) is 20%, the opening degree of fig. 3(b) is 50%, and the opening degree of fig. 3(c) is 100%;
fig. 4 is a schematic diagram of a fitting curve of the valve opening and the acoustic signal of the valve according to the embodiment of the present invention.
Detailed Description
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, the present invention provides a valve sound wave monitoring system, including:
a valve 2; the valves are installed in the fluid pipeline 100 at intervals;
the acoustic wave sensor 3, each valve is fitted with at least one acoustic wave sensor; the sound wave sensor is arranged inside or outside the valve and close to the valve core; each acoustic wave sensor is provided with an ID code, and the ID code corresponds to a geographic information code of the geographic position of the acoustic wave sensor; and geographic information coding information and model information of the corresponding valve are added when the sound wave sensor transmits the collected sound wave signals.
The signal transmission device is used for receiving the sound wave signals collected by the sound wave sensor and sending the sound wave signals to the sound wave data analysis platform;
the acoustic wave data analysis platform 1 is arranged in a remote monitoring room and is connected with a signal transmission device in a wired or wireless mode; the sound wave data analysis platform is used for receiving and analyzing the sound wave signals uploaded by the signal transmission device; the analysis specifically comprises: analyzing one or more of the working state of the valve, analyzing whether the valve leaks or leaks inwards, correcting the opening of the valve, monitoring the flow of the valve and analyzing whether the valve vibrates. The sound wave data analysis platform further comprises a display unit, and the display unit displays the positions of the valves and the corresponding sound wave signals in a pipe network simulation graph mode.
In the invention, the valve can be a stop valve, an on-off valve, a regulating valve, a balance valve or a ball valve.
FIG. 2 shows a regulating valve; the regulating valve is installed in the fluid pipeline 100 through flanges 21 at both sides; the acoustic wave sensor 3 is arranged outside the valve and close to the valve core; the regulating valve comprises a regulating valve core 22, a regulating rod 23 and an actuating mechanism 24, and the actuating mechanism 24 is connected with the regulating valve core 22 through the regulating rod 23; the actuator 24 is connected to the remote controller through a signal transmission device, receives a command from the remote controller, and can operate and adjust the opening of the valve core 22 through the actuator 24.
In the invention, the sound wave sensor can be a listening device, a pickup, a micro-displacement electric signal sound sensor, a surface sound wave sensor, a dynamic pressure sensor, a sound wave frequency sensor, a sound wave sound pressure sensor, a sound wave sound intensity sensor or a sound wave sound power sensor.
In the present invention, the surface acoustic wave sensor device may be a rayleigh wave sensor, an optical fiber sensor, a piezoelectric array sensor 30, a tangential horizontal plate mode sensor, a lamb (lamb) wave sensor, or a love (love) wave sensor.
Example 2
The invention also provides a valve sound wave monitoring method, which specifically comprises the following steps:
s1: arranging an acoustic wave sensor at the position of a valve of the fluid pipeline;
s2: encoding geographic information of each valve device provided with the acoustic wave sensor;
s3: the sound wave sensor transmits the collected sound wave signals to the sound wave monitoring and analyzing platform through the signal transmission device;
s4: outputting the analysis result of the sound wave monitoring and analyzing platform to a computer simulation model of a pipeline or a pipe network with geographic information data, and visually displaying the sound wave monitoring result of the valve in a pipe network simulation graph form;
s5: the sound wave monitoring and analyzing platform utilizes the continuously recorded sound wave signals to correlate with the running state information of the corresponding valve, analyzes the working state of the valve, analyzes whether the valve leaks or leaks inwards, corrects the opening of the valve, and monitors the flow of the valve or analyzes whether the valve vibrates.
Example 3
The invention also provides a valve sound wave monitoring method for monitoring the flow of the valve, which specifically comprises the following steps:
s11: installing a valve and an acoustic wave sensor thereof on a flow calibration experiment platform;
s12: debugging valves and various sensors thereof and a data acquisition system of a flow calibration experiment platform, so as to acquire sound wave signals of qualified sound wave sensors without noise interference and meet calibration requirements;
s13: debugging pressure sensors in front of and behind the valve and calibrating flow sensors of the experiment platform to meet calibration requirements;
s14: monitoring acoustic signals collected by a valve acoustic sensor under the conditions of different valve front pressures and different regulating valve flow rates; the sound wave signal comprises sound wave frequency, sound wave intensity, sound wave pressure and sound wave power;
s15: performing correlation analysis on the data: correlating the flow of the valve with the sound wave signal of the valve under the condition of fixing the pressure before the valve to obtain a fitting curve; the pressure before the valve is changed, so that a plurality of fitting curves can be obtained; in the step S15, the sound wave signal is one of sound wave frequency, sound wave intensity, sound wave pressure, and sound wave power;
s16: using another regulating valve with the same model to carry out a check experiment on the obtained fitting curve and the formula under the same experiment calibration condition;
s17: in the actual detection process, a corresponding fitting curve is found according to the pressure in front of the valve of the model to be monitored, and the corresponding valve flow is calculated according to the monitored sound wave signal.
Example 4
The invention also provides a valve sound wave monitoring method for analyzing whether the valve leaks or leaks inwards, which specifically comprises the following steps:
s21: installing a valve and an acoustic wave sensor thereof on a flow calibration experiment platform;
s22: debugging valves and various sensors thereof and a data acquisition system of a flow calibration experiment platform, so as to acquire sound wave signals of qualified sound wave sensors without noise interference and meet calibration requirements;
s23: debugging pressure sensors in front of and behind the valve and calibrating flow sensors of the experiment platform to meet calibration requirements;
s24: monitoring acoustic signals collected by a valve acoustic sensor under the conditions of different pre-valve pressures and different opening degrees of an adjusting valve; the sound wave signal comprises sound wave frequency, sound wave intensity, sound wave pressure and sound wave power; referring to fig. 3, in fig. 3(a), the valve opening is 20%, and the sound wave intensity is a; in fig. 3(B), the valve opening is 50%, and the sound wave intensity is B; in fig. 3(C), the valve opening is 100%, and the sound wave intensity is C;
s25: referring to fig. 4, the above data are analyzed in association: correlating the opening of the valve with the sound wave signal of the valve under the condition of fixing the pressure before the valve to obtain a fitting curve; the pressure before the valve is changed, so that a plurality of fitting curves can be obtained; in the step S15, the sound wave signal is one of sound wave frequency, sound wave intensity, sound wave pressure, and sound wave power;
s26: using another regulating valve with the same model to carry out a check experiment on the obtained fitting curve and the formula under the same experiment calibration condition;
s27: in the actual detection process, finding a corresponding fitting curve according to the pressure before the valve of the monitored model, and calculating a corresponding sound wave signal according to the obtained valve opening; the calculated acoustic signal is X1 and the actual monitored acoustic signal is X2, and if | X1-X2 | X1 ≧ 10%, it is assumed that a leak or internal leak has occurred at the valve.
Example 5
The invention also provides a valve sound wave monitoring method, which is used for correcting the opening of the valve and specifically comprises the following steps:
s31: installing a valve and an acoustic wave sensor thereof on a flow calibration experiment platform;
s32: debugging valves and various sensors thereof and a data acquisition system of a flow calibration experiment platform, so as to acquire sound wave signals of qualified sound wave sensors without noise interference and meet calibration requirements;
s33: debugging pressure sensors in front of and behind the valve and calibrating flow sensors of the experiment platform to meet calibration requirements;
s34: monitoring acoustic signals collected by a valve acoustic sensor under the conditions of different pre-valve pressures and different opening degrees of an adjusting valve; the sound wave signal comprises sound wave frequency, sound wave intensity, sound wave pressure and sound wave power;
s35: performing correlation analysis on the data: correlating the opening of the valve with the sound wave signal of the valve under the condition of fixing the pressure before the valve to obtain a fitting curve; the pressure before the valve is changed, so that a plurality of fitting curves can be obtained; in the step S15, the sound wave signal is one of sound wave frequency, sound wave intensity, sound wave pressure, and sound wave power;
s36: using another regulating valve with the same model to carry out a check experiment on the obtained fitting curve and the formula under the same experiment calibration condition;
s37: in the actual detection process, finding a corresponding fitting curve according to the pressure before the valve of the monitored model, and calculating the corresponding valve opening according to the obtained sound wave signal; and if the calculated valve opening is M1 and the opening fed back by the valve is M2, if the |. M1-M2 |/M1 is more than or equal to 10%, the opening fed back by the valve is not accurate, and maintenance is required.
Example 6
The invention also provides a valve sound wave monitoring method for analyzing whether the valve vibrates, which specifically comprises the following steps:
s41: installing a valve and an acoustic wave sensor thereof on a flow calibration experiment platform;
s42: debugging valves and various sensors thereof and a data acquisition system of a flow calibration experiment platform, so as to acquire sound wave signals of qualified sound wave sensors without noise interference and meet calibration requirements;
s43: debugging pressure sensors in front of and behind the valve and calibrating flow sensors of the experiment platform to meet calibration requirements;
s44: monitoring acoustic signals collected by a valve acoustic sensor under the conditions of different pre-valve pressures and different opening degrees of an adjusting valve; the acoustic signal comprises an acoustic frequency;
s45: performing correlation analysis on the data: correlating the opening of the valve with the sound wave signal of the valve under the condition of fixing the pressure before the valve to obtain a fitting curve; the pressure before the valve is changed, so that a plurality of fitting curves can be obtained;
s46: using another regulating valve with the same model to carry out a check experiment on the obtained fitting curve and the formula under the same experiment calibration condition;
s47: in the actual detection process, finding a corresponding fitting curve according to the pressure before the valve of the monitored model, and calculating the corresponding sound wave frequency according to the opening degree fed back by the valve; and the calculated sound wave frequency is N1, the actually acquired sound wave frequency is N2, and if | -N1-N2 |/N1 is more than or equal to 15%, the valve is considered to vibrate and needs to be overhauled.
Example 7
The invention also provides a valve sound wave monitoring method for analyzing the working state (valve opening) of the valve, which specifically comprises the following steps:
s51: installing a valve and an acoustic wave sensor thereof on a flow calibration experiment platform;
s52: debugging valves and various sensors thereof and a data acquisition system of a flow calibration experiment platform, so as to acquire sound wave signals of qualified sound wave sensors without noise interference and meet calibration requirements;
s53: debugging pressure sensors in front of and behind the valve and calibrating flow sensors of the experiment platform to meet calibration requirements;
s54: monitoring acoustic signals collected by a valve acoustic sensor under the conditions of different pre-valve pressures and different opening degrees of an adjusting valve; the acoustic signal comprises an acoustic frequency;
s55: performing correlation analysis on the data: correlating the opening of the valve with the sound wave signal of the valve under the condition of fixing the pressure before the valve to obtain a fitting curve; the pressure before the valve is changed, so that a plurality of fitting curves can be obtained;
s56: using another regulating valve with the same model to carry out a check experiment on the obtained fitting curve and the formula under the same experiment calibration condition;
s57: in the actual detection process, a corresponding fitting curve is found according to the pressure before the valve of the model to be monitored, and the opening degree of the valve is calculated according to the monitored sound wave signal so as to judge the real working state (real opening degree) of the valve.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The present invention provides a system and method for transporting liquid through a conduit with acoustic monitoring as described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A valve acoustic monitoring system, comprising:
a valve (2) installed in the fluid pipe (100);
the acoustic wave sensor (3) is arranged at the position corresponding to the valve and used for acquiring acoustic wave signals at the position corresponding to the valve and transmitting the acoustic wave signals to the signal transmission device;
the signal transmission device is used for receiving the sound wave signals collected by the sound wave sensor and sending the sound wave signals to the sound wave data analysis platform;
the acoustic wave data analysis platform (1) is used for receiving and analyzing acoustic wave signals uploaded by the signal transmission device; the analysis specifically comprises: analyzing one or more of the working state of the valve, analyzing whether the valve leaks or leaks inwards, correcting the opening of the valve, monitoring the flow of the valve and analyzing whether the valve vibrates.
2. The valve acoustic monitoring system of claim 1, wherein the valve is a stop valve, an on-off valve, a regulating valve, a balancing valve, or a ball valve.
3. The valve acoustic monitoring system of claim 1, wherein the acoustic sensor is any one or a combination of a listener, a sound pick-up, a micro-displacement electrical signal acoustic sensor, a surface acoustic wave sensor, a dynamic pressure sensor, an acoustic frequency sensor, an acoustic pressure sensor, an acoustic intensity sensor, or an acoustic power sensor.
4. The valve acoustic wave monitoring system of claim 3, wherein the surface acoustic wave sensor is embodied as any one or a combination of a Rayleigh wave sensor, a fiber optic sensor, a piezoelectric array sensor, a tangential horizontal plate mode sensor, a lamb wave sensor, or a love wave sensor.
5. The valve acoustic monitoring system of claim 1, wherein the acoustic sensor is disposed inside or outside the valve proximate the valve core.
6. The valve acoustic monitoring system of claim 1, wherein the acoustic sensor has an ID code that corresponds to a geographic information code of a geographic location of the acoustic sensor; and geographic information coding information and model information of the corresponding valve are added when the sound wave sensor transmits the collected sound wave signals.
7. The acoustic valve monitoring system of claim 6, wherein the acoustic data analysis platform further comprises a display unit; the display unit is used for displaying the position of each valve and the corresponding sound wave signal.
8. The acoustic monitoring system for the valve according to claim 1, wherein the valve is a regulating valve, and the acoustic data analysis platform analyzes and obtains the flow rate of the valve by the following method:
and the acoustic wave data analysis platform calculates the flow of the regulating valve under the condition of the pressure before the given valve by utilizing a pre-fitted correlation formula of the acoustic wave signals and the flow of the valve of the type to be analyzed under the condition of the pressure before the given valve.
9. A valve acoustic wave monitoring method, based on the valve acoustic wave monitoring system of any one of claims 1 to 7; the method specifically comprises the following steps:
s1: arranging an acoustic wave sensor at the position of a valve of the fluid pipeline;
s2: encoding geographic information of each valve device provided with the acoustic wave sensor;
s3: the sound wave sensor transmits the collected sound wave signals to the sound wave monitoring and analyzing platform through the signal transmission device;
s4: outputting the analysis result of the sound wave monitoring and analyzing platform to a computer simulation model of a pipeline or a pipe network with geographic information data, and visually displaying the sound wave monitoring result of the valve in a pipe network simulation graph form;
s5: the sound wave monitoring and analyzing platform utilizes the continuously recorded sound wave signals to correlate with the running state information of the corresponding valve, analyzes the working state of the valve, analyzes whether the valve leaks or leaks inwards, corrects the opening of the valve, and monitors the flow of the valve or analyzes whether the valve vibrates.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022105340A1 (en) * | 2020-11-23 | 2022-05-27 | 中国华能集团清洁能源技术研究院有限公司 | Sound wave-based pipe monitoring system, and monitoring method |
| CN115113614A (en) * | 2022-08-26 | 2022-09-27 | 天津奥美自动化系统有限公司 | Valve detection control method and system based on front end and back end |
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| CN107906374A (en) * | 2017-11-15 | 2018-04-13 | 北京科创三思科技发展有限公司 | A kind of valves leakage detection device and system |
| CN109668055A (en) * | 2018-11-16 | 2019-04-23 | 江苏微优软件科技有限公司 | A kind of remote online valve leaks monitoring device and its working method |
| WO2020197066A1 (en) * | 2019-03-12 | 2020-10-01 | 조두혁 | Flow-rate regulating valve |
| CN110411677A (en) * | 2019-07-31 | 2019-11-05 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of valve leaks and cavitation monitoring device and monitoring method based on underwater sound signal |
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| WO2022105340A1 (en) * | 2020-11-23 | 2022-05-27 | 中国华能集团清洁能源技术研究院有限公司 | Sound wave-based pipe monitoring system, and monitoring method |
| CN115113614A (en) * | 2022-08-26 | 2022-09-27 | 天津奥美自动化系统有限公司 | Valve detection control method and system based on front end and back end |
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