CN106643871B - A kind of trap leaking detection module - Google Patents
A kind of trap leaking detection module Download PDFInfo
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- CN106643871B CN106643871B CN201610883922.0A CN201610883922A CN106643871B CN 106643871 B CN106643871 B CN 106643871B CN 201610883922 A CN201610883922 A CN 201610883922A CN 106643871 B CN106643871 B CN 106643871B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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Abstract
The invention discloses a kind of trap leaking detection modules, it generates high-frequency vibration using pressed gas small hole leaking, detection oscillation intensity determines whether leakage and leakage rate, there is fixed curve model by the fluid flow rate of aperture and the oscillation intensity of generation, and widely different by the flow velocity of aperture under liquid phase and the fixed pressure difference of vapor species, gaseous substance generates the vibration of 20K-40KHz or so；Principle accordingly, this detection module passes through intensity, temperature sensor temperature in the frequency band of the built-in piezoelectric ceramic vibration sensor of acquisition, and uploads in real time；On the one hand, can be for statistical analysis by data of the management system to upload, and mathematical model is calculated with cognition, scientific accurate judgement is provided to drain valve operation, to improve safety；On the other hand, the detection accuracy of this detection module is also higher, and has lower power consumption.
Description
Technical field
The present invention relates to valve leak detection technique more particularly to a kind of trap leaking detection modules.
Background technique
Foreign countries start from the age in last century to the research of valve leak detection technique, but due to being still in the primary stage, leak
Problem fails to arouse enough attention.
After U.S.'s three mile island nuclear station generation accident, the theoretical research of valve leak and the development ability of coherent detection instrument
Start gradually to increase.It is wherein most successful to be found in the American Physical acoustics company in year, it is dedicated to sound emission and automatic ultrasonic
The research and development of Scanning Detction series of products.In recent decades, the said firm develop a series of Portable acoustic emission leakage detectors and
Multichannel leakage monitoring system etc..
2001, and valve leak instrument is successfully developed, it is exclusively used in chemical plant, oil plant, drilling platforms, it is real
The online quantitative Diagnosis of valve leak failure is showed.And the detector is applied to chemical plant, oil plant, brill by British Petroleum Company
The fields such as well platform, it was confirmed that feasibility, but not yet it is applied to Thermal Power Generation Industry.
In consideration of it, it is necessary to research and develop corresponding detection technique according to the demand of Thermal Power Generation Industry.
Summary of the invention
The object of the present invention is to provide a kind of trap leaking detection module, specific higher detection accuracy with it is lower
Safety can be improved in power consumption.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of trap leaking detection module, comprising: power supply, temperature monitoring simulation adjustment unit, ultrasound detection simulation are adjusted
Whole unit, wireless transmission unit and information collection and communication processing unit；Wherein:
The wireless transmission unit is waken up when receiving data request command, and is transmitted to information collection and mailing address
Unit is managed, and information collection and the collected detection data of communication processing unit are sent out；
The information collection and communication processing unit, for being simulated according to the data request command received from ultrasound detection
Corresponding detection data is acquired in adjustment unit and temperature monitoring simulation adjustment unit, and is sent to wireless transmission after being handled
Unit；
The temperature monitoring simulates adjustment unit, is used for temperature collection data, and be sent to information after carrying out simulation adjustment
Acquisition and communication processing unit；
The ultrasound detection simulates adjustment unit, is sent to letter for acquiring ultrasound data, and after carrying out simulation adjustment
Breath acquisition and communication processing unit；
The power supply, for powering for other each units.
The information collection and communication processing unit include: the first CPU of responsible detection data transmitting-receiving and processing, and negative
Blame Communication processing and the 2nd CPU of power consumption control；
Wherein, power consumption control includes: after wireless transmission unit is waken up, and the 2nd CPU controls power supply and supplies to each unit
Electricity.
Collected temperature data is converted into resistance variations by the temperature monitoring simulation adjustment unit, passes through bridge circuit
Become voltage change, analog quantity is transferred to information collection and communication processing unit by 10 by amplifier times amplification.
The ultrasound detection simulation adjustment unit converts collected ultrasonic signal to through sensor the electricity of microvolt grade
Signal is pressed, is transferred to letter by 50 times of amplifications of level-one high input impedance amplifier, then after sequentially entering second and third grade of amplifier amplification
Breath acquisition and communication processing unit.
As seen from the above technical solution provided by the invention, high-frequency vibration is generated using pressed gas small hole leaking,
Detection oscillation intensity determines whether leakage and leakage rate, by the fluid flow rate of aperture and the oscillation intensity of generation has fixation
Curve model, and it is widely different by the flow velocity of aperture under liquid phase and the fixed pressure difference of vapor species, and gaseous substance generates 20K-
The vibration of 40KHz or so；Principle accordingly, this detection module are strong in the frequency band by acquiring built-in piezoelectric ceramic vibration sensor
Degree, temperature sensor temperature, and upload in real time；On the one hand, can be for statistical analysis by data of the management system to upload, and
Mathematical model is calculated with cognition, scientific accurate judgement is provided to drain valve operation, to improve safety；On the other hand, this inspection
The detection accuracy for surveying module is also higher, and has lower power consumption.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of operation schematic diagram of trap leaking detection module provided in an embodiment of the present invention.
Fig. 2 is the interface diagram of trap leaking detection module provided in an embodiment of the present invention.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
The embodiment of the present invention provides a kind of trap leaking detection module, specifically includes that power supply, temperature monitoring simulation are adjusted
Whole unit, ultrasound detection simulation adjustment unit, wireless transmission unit and information collection and communication processing unit；Wherein:
The wireless transmission unit is waken up when receiving data request command, and is transmitted to information collection and mailing address
Unit is managed, and information collection and the collected detection data of communication processing unit are sent out；
The information collection and communication processing unit, for being simulated according to the data request command received from ultrasound detection
Corresponding detection data is acquired in adjustment unit and temperature monitoring simulation adjustment unit, and is sent to wireless transmission after being handled
Unit；
The temperature monitoring simulates adjustment unit, is used for temperature collection data, and be sent to information after carrying out simulation adjustment
Acquisition and communication processing unit；
The ultrasound detection simulates adjustment unit, is sent to letter for acquiring ultrasound data, and after carrying out simulation adjustment
Breath acquisition and communication processing unit；
The power supply, for powering for other each units.
In order to make it easy to understand, being described in detail below to the leak detection module (can abbreviation TC module).
1, power supply.
Using lithium thionyl chloride cell, maximum battery voltage 3.6V, minimum voltage 2.7V are used in circuit design
DC/DC booster circuit, boost circuit switch frequency 1MHz effectively reduce the power supply disturbance in measurement frequency band, to make to adopt
Collect the 4.2V voltage that precision is higher, and the 2.7V-3.6V power boost that battery provides can be used to system for the part DC/DC, and
300 milliamperes or so of electric current can be provided.It powers due to using battery, all devices use low consumption device as far as possible, in program
Power consumption is optimized, so that TC module be made to have accomplished low-power consumption.
2, temperature monitoring simulates adjustment unit.
It is mainly responsible for and collected temperature data is converted into resistance variations, voltage change is become by bridge circuit, pass through
Analog quantity is transferred to information collection and communication processing unit by 10 times of amplifications for crossing amplifier.
In the embodiment of the present invention, in order to keep temperature detection more accurate, and overall power is not increased using bridge circuit
Electric current is reduced, a bridge arm using PT100 temperature sensor as bridge, temperature change leads to bridge disequilibrium, to export
Voltage, by acquiring the voltage, can calculate 0 to 999.99 degree by amplifier 10 times of the voltage amplification.
3, ultrasound detection simulates adjustment unit.
It is responsible for converting collected ultrasonic signal to through sensor the voltage signal of microvolt grade, is inputted by level-one height
50 times of amplifications of impedance amplifier, then sequentially enter and be transferred to letter (for example, can respectively amplify 2500 times) after second and third grade of amplifier is amplified
Breath acquisition and communication processing unit.
Herein using multistage amplification, the inadequate phenomenon of bandwidth caused by single-stage amplification can avoid.
4, wireless transmission unit
It uses broadband communication technical transmission, carrier frequency 433MHz, the part receive wake-up from coordinator and
Data request command forwards data and signal by information collection and communication processing unit sending.
5, information collection and communication processing unit
Comprising: be responsible for detection data transmitting-receiving and the first CPU of processing and responsible Communication processing and power consumption control second
CPU；
Wherein, power consumption control includes: after wireless transmission unit is waken up, and the 2nd CPU controls power supply and supplies to each unit
Electricity.
In the above scheme of the embodiment of the present invention, high-frequency vibration is generated using pressed gas small hole leaking, detection vibration is strong
It spends to determine whether leakage and leakage rate, by the fluid flow rate of aperture and the oscillation intensity of generation has fixed curve model,
And widely different by the flow velocity of aperture under liquid phase and the fixed pressure difference of vapor species, gaseous substance generates 20K-40KHz or so
Vibration；Principle accordingly, this detection module passes through intensity in the frequency band of the built-in piezoelectric ceramic vibration sensor of acquisition, temperature passes
Sensor temperature, and upload in real time；On the one hand, can be for statistical analysis by data of the management system to upload, and in terms of cognition
Mathematical model is calculated, scientific accurate judgement is provided to drain valve operation, to improve safety；On the other hand, this detection module
Detection accuracy is also higher, and has lower power consumption.
As shown in Figure 1, being a kind of flow chart of trap leaking detection module provided in an embodiment of the present invention.
The power boost of the 2.7-4V that power supply supplies battery and pressure stabilizing supply total system in 4.2V, and PT100 temperature passes
Temperature signal is converted into resistance variations by sensor, becomes voltage change by bridge circuit, and 10 by amplifier times are amplified mould
Analog quantity is sent to acquisition process CPU, and ultrasonic signal is converted into the voltage signal of microvolt grade through sensor, is inputted and is hindered by level-one height
50 times of amplifications of anti-amplifier, amplify into second and third grade of amplifier, finally enter acquisition process CPU (i.e. the first CPU).In order to drop
Low-power consumption, Communication processing CPU (i.e. the 2nd CPU) control bulk supply system, in communication LORA module (i.e. wireless transmission unit)
To system power supply when wake-up, otherwise entering dormant state, other systems page powers off therewith, and acquisition system needs and background communication,
It is linked to realize with server using LORA module and the coordinator communication of broadband communication technology.
Such as the interface diagram that Fig. 2 is trap leaking detection module.It shares 3 connectors, and plate top connects for battery
Mouthful, the interface that there are two cores in board bottom portion is that temperature sensor PT100 is connected with high temperature wire, and three core connectors are for passing through
Shielding line connects ultrasonic sensor in succession.
The important technological parameters and index of trap leaking detection module provided in an embodiment of the present invention are as shown in table 1:
1 technical parameter of table and index
Its fault identification and processing mode are as follows:
In the faulty indicator light in the top of module, indicator light flashing representation module is faulty, and failure is divided into following several:
1, battery failures.
Battery failures are usually that cell voltage is abnormal, and solution is to split out whether battery measurement voltage is lower than 3.2V,
If being lower than 3.2V, that is, dead battery, replacement battery failures are eliminated.
2, temperature sensor fault.
Temperature sensor fault is usually that sensor broken string or temperature anomaly increase, and solution checks temperature sensor
Line, directly measurement resistance temperature sensor, resistance is constant when temperature change, can determine that temperature sensor damages.
3, ultrasonic sensor failure.
Ultrasonic sensor failure is usually that bottom is made an uproar excessive or too small for criterion, and solution replaces ultrasonic sensor.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (3)
1. a kind of trap leaking detection module characterized by comprising power supply, temperature monitoring simulation adjustment unit, ultrasound inspection
Survey simulation adjustment unit, wireless transmission unit and information collection and communication processing unit；Wherein:
The wireless transmission unit is waken up when receiving data request command, and is transmitted to information collection and Communication processing list
Member, and information collection and the collected detection data of communication processing unit are sent out；
The information collection and communication processing unit are adjusted for being simulated according to the data request command received from ultrasound detection
Corresponding detection data is acquired in unit and temperature monitoring simulation adjustment unit, and it is single that wireless transmission is sent to after being handled
Member；
The temperature monitoring simulates adjustment unit, is used for temperature collection data, and be sent to information collection after carrying out simulation adjustment
And communication processing unit；Collected temperature data is converted into resistance variations by the temperature monitoring simulation adjustment unit, is passed through
Bridge circuit becomes voltage change, and analog quantity is transferred to information collection and communication processing unit by 10 by amplifier times amplification；
The ultrasound detection simulates adjustment unit, for acquiring ultrasound data, and carries out being sent to information after simulation adjustment and adopt
Collection and communication processing unit；
The power supply, for powering for other each units.
2. trap leaking detection module according to claim 1, which is characterized in that the information collection and Communication processing
Unit includes: responsible detection data transmitting-receiving and the first CPU of processing and responsible Communication processing and the 2nd CPU of power consumption control；
Wherein, power consumption control includes: after wireless transmission unit is waken up, and the 2nd CPU controls power supply and powers to each unit.
3. trap leaking detection module according to claim 1, which is characterized in that the ultrasound detection simulation adjustment is single
Member converts collected ultrasonic signal to through sensor the voltage signal of microvolt grade, passes through level-one high input impedance amplifier
50 times of amplifications, then information collection and communication processing unit are transferred to after sequentially entering second and third grade of amplifier amplification.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610883922.0A CN106643871B (en) | 2016-10-10 | 2016-10-10 | A kind of trap leaking detection module |
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| CN201610883922.0A CN106643871B (en) | 2016-10-10 | 2016-10-10 | A kind of trap leaking detection module |
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| CN106643871A CN106643871A (en) | 2017-05-10 |
| CN106643871B true CN106643871B (en) | 2019-02-12 |
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| CN111197700A (en) * | 2019-12-17 | 2020-05-26 | 厦门矽创微电子科技有限公司 | Leakage detection device and system with soaking water alarm function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832472A (en) * | 2010-06-12 | 2010-09-15 | 中国石油化工股份有限公司管道储运分公司 | System implementing pipeline leak detection by utilizing infrasonic wave |
| CN102095083A (en) * | 2010-12-16 | 2011-06-15 | 上海工业自动化仪表研究院 | Detecting system used for leakage of gas valve |
| CN205538098U (en) * | 2016-01-28 | 2016-08-31 | 深圳钰湖电力有限公司 | Interior detection device of hourglass of valve who has warm medium pipeline |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6950767B2 (en) * | 2002-11-15 | 2005-09-27 | Renesas Technology Corp. | Quality monitoring system for building structure, quality monitoring method for building structure and semiconductor integrated circuit device |
| KR100798006B1 (en) * | 2006-08-17 | 2008-01-24 | 한국원자력연구원 | Integrated monitoring/diagnosis method for nuclear device and system using the same |
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2016
- 2016-10-10 CN CN201610883922.0A patent/CN106643871B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832472A (en) * | 2010-06-12 | 2010-09-15 | 中国石油化工股份有限公司管道储运分公司 | System implementing pipeline leak detection by utilizing infrasonic wave |
| CN102095083A (en) * | 2010-12-16 | 2011-06-15 | 上海工业自动化仪表研究院 | Detecting system used for leakage of gas valve |
| CN205538098U (en) * | 2016-01-28 | 2016-08-31 | 深圳钰湖电力有限公司 | Interior detection device of hourglass of valve who has warm medium pipeline |
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