CN202255773U - Detecting and positioning device for leakage of caliduct - Google Patents
Detecting and positioning device for leakage of caliduct Download PDFInfo
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- CN202255773U CN202255773U CN2011204038264U CN201120403826U CN202255773U CN 202255773 U CN202255773 U CN 202255773U CN 2011204038264 U CN2011204038264 U CN 2011204038264U CN 201120403826 U CN201120403826 U CN 201120403826U CN 202255773 U CN202255773 U CN 202255773U
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- caliduct
- temperature sensor
- temperature
- chip microcomputer
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Abstract
The utility model relates to a detecting and positioning device for leakage of a caliduct. The detecting and positioning device comprises temperature sensors, a singlechip and a host machine, wherein a plurality of the temperature sensors are distributed along the caliduct; the temperature sensors are connected with a bus in a single wire manner; the bus is connected with the singlechip through a serial port; the singlechip is also connected with a power supply, a keyboard, an alarm system and a digital display respectively; the singlechip is connected with the host machine through a RS232 interface so as to maintain communication; a storage device capable of saving point temperature values acquired by the temperature sensors is arranged inside the host machine; and an analysis module that is used for positioning accurately based on the statistics analysis on variation law of the point temperature values is also arranged in the host machine. By adopting the detecting and positioning device, the dynamic state of the temperature variation at any time can be known, and the caliduct leakage in a certain temperature sensor position can be mastered accurately in time.
Description
Technical field
The utility model relates to checkout equipment, specially refers to a kind of device that detects and locate that when caliduct leaks, is used as.
Background technology
Raising along with living standards of the people; Heating installation has become the necessary article of passing the winter; And the pipeline transportation of heating installation has become a kind of convenient economic means of transportation, but causes caliduct to leak with artificial destruction through regular meeting because pipe-line equipment is aging, has seriously influenced heating.Therefore, pipeline is carried out Leak Detection and the location is very important.
At present to the research of the Leak Detection of water supply pipe, natural gas line, oil pipeline and localization method comparative maturity.But also fewer for the corresponding research of caliduct, the position is looked in the experience manual work that also rests on the dependence tradesman, inefficiency, and can not accurately locate.This paper proceeds from the reality, and has designed a kind of portable caliduct Leak Detection orientator.This system has the advantages that cost is low, volume is little, easy to use.
Because existing heater unit is not only outer thermofin is arranged, and also have ebullator,, can not get a desired effect with the leakage detection method of existing water supply pipe, oil pipeline---acoustic emission detection.Temperature is the physical quantity that often has in the Industry Control, and caliduct must have heat dissipation when escape of liquid, passes to the face of land, concludes through detecting surface temperature whether caliduct leaks or leak gas here.
System selects for use pipeline surface temperature along the line as measured parameter.Utilize Intelligent Digital temperature sensor DS18B20 to detect the not comprovincial surface temperature on the caliduct in real time, through with the comparison of environment temperature, conclude here whether leak.And report to the police automatically when too high when detecting temperature, and alarming line can be according to environment through the button adjustment.Will save in a large number like this owing to caliduct leaks and can not find not hot, the energy dissipation of the heating that causes the position, also improve work efficiency simultaneously greatly, reduce working strength of workers and maintenance cost.
Summary of the invention
The purpose of the utility model provides a kind of detection and locating device that caliduct leaks that be used for.Detection of the utility model and locating device want to predict real-time and accurately the leak position of caliduct, are convenient in time take control measures, and anti-heads further worsens.
In order to reach the foregoing invention purpose, the technical scheme that the utility model provides is following:
Detection and locating device that a kind of caliduct leaks; It is characterized in that; This detection and locating device include temperature sensor, single-chip microcomputer and main frame; Described temperature sensor is provided with a plurality of and is distributed in the along the line of caliduct, and a plurality of temperature sensor single lines are connected to a bus, and this bus is connected to single-chip microcomputer through serial ports; Also be connected with power supply, keyboard, warning system and digital the demonstration on the described single-chip microcomputer respectively; This single-chip microcomputer connects main frame to keep communication through the RS232 interface, is provided with the memory device of the each point temperature value of storage temperature sensor acquisition in the described main frame, also is provided with and to the Changing Pattern statistical study of the each point temperature value analysis module with accurate location.
In the detection and locating device of the utility model, described temperature sensor is provided with eight, and this temperature sensor is one-line digital temperature sensor, and the mode data transmission of eight temperature sensor employing one-wire bus is to single-chip microcomputer.
In the detection and locating device of the utility model, also be connected with data storage cell and reset circuit on the described single-chip microcomputer.
Based on technique scheme, the utility model has following technique effect in the Leak Detection of caliduct and location:
1. the utility model is arranged a plurality of temperature sensors along heating pipeline; And in main frame, demonstrate the temperature value change curve of each temperature sensor in real time; It is dynamic to understand temperature variation at any time, grasps which temperature sensor location generation heating installation timely and accurately and leaks.
2. the utility model is simple in structure and be easy to realize; Overcome the defective that is difficult to find the leak position when caliduct leaks gas leakage in the past; Can some reduce cost, enhance productivity, have very application prospects aspect the caliduct detection and location.
Description of drawings
Fig. 1 is that the detection that the utility model caliduct leaks is connected synoptic diagram with the hardware of locating device.
Fig. 2 is detection and the locating device testing process synoptic diagram that the utility model caliduct leaks.
Temperature transition process flow diagram when Fig. 3 is the utility model caliduct Leak Detection.
Fig. 4 is the utility model caliduct detection of leaking surface temperature reference distribution curve map during with the locating device measurement.
Embodiment
Below we combine accompanying drawing and concrete embodiment to come detection and locating device that the caliduct of the utility model leaks are done further elaboration; In the hope of understanding its architectural feature and the course of work more clearly, but can not limit the protection domain of the utility model with this.
Detection and locating device that the caliduct of the utility model leaks structurally include temperature sensor, single-chip microcomputer and main frame.Described temperature sensor is provided with a plurality of and is distributed in the along the line of caliduct, and a plurality of temperature sensor single lines are connected to a bus, and this bus is connected to single-chip microcomputer through serial ports.On single-chip microcomputer, also be connected with power supply, keyboard, warning system and digital the demonstration respectively, this single-chip microcomputer connects main frame to keep communication through the RS232 interface.In main frame, be provided with the memory device of the each point temperature value of storage temperature sensor acquisition, also be provided with and the Changing Pattern statistical study of each point temperature value analysis module with accurate location.On single-chip microcomputer, also be connected with data storage cell and reset circuit.
Embodiment 1
The detection that the caliduct of present embodiment leaks and the hardware of locating device mainly are divided into three parts: single chip computer AT 89C51, temperature sensor DS18B20 and keyboard-display circuit.Its hardware circuit sketch is as shown in Figure 1.
Require and later expansion needs according to the detection of caliduct leakage and the control of locating device, we select with the AT89C51 single-chip microcomputer is core.The AT89C51 single-chip microcomputer is a kind of low-power consumption/low-voltage/high performance 8 single-chip microcomputers; The Flash storer that the 4K byte is arranged in the sheet; Can be used to the initialize routine of storage system; Accomplish fast processing, the storage of collection in worksite data, and output control signal corresponding---the digital demonstration and the driving warning circuit.
Carry out temperature acquisition through DS18B20 unibus digital temperature sensor in the present embodiment, the temperature data of collection sends single-chip microcomputer to the mode of serial communication.
DS18B20 is the one-line digital temperature sensor that DALLAS company produces, and the DS18B20 temperature sensor chip can directly be read dut temperature, and in-20 ℃～+ 100 ℃ scopes, precision is ± 0.1 ℃.CPU reads or writes data and only needs an I/O mouth line to DS18B20, carry out data communication with the mode and the microcontroller of serial communication, and the port that takies microprocessor is less, can save a large amount of lead-in wires and logical circuit.The scene temperature that a plurality of DS18B20 digital temperature sensors are measured has improved the anti-interference of system directly with the digital form transmission of " one-wire bus ", and the scene temperature that is suitable for various rugged surroundings is measured.Resolution parameter and alarm temperature capable setting parameter are stored among the E2PROM of DS18B20, still preserve after transferring electricity, and can be on main frame the place of display abnormality temperature.
The dynamic LED scan mode is adopted in the demonstration of measured temperature, and single chip computer AT 89C51 receives the DS18B20 data converted by certain time interval, realizes that the dynamic temperature of charactron shows.
The major function of RS232 interface is to keep communicating by letter between single-chip microcomputer and the main frame; The each point temperature value of gathering is in real time preserved; Be convenient to real-time or historical temperature value change curve is consulted and drawn out to historical data; Simultaneously also be convenient to send historical measured temperature values to main frame, accomplish the Changing Pattern statistical study of each point temperature value, reach the purpose of accurate location by main frame.
In order to reach pinpoint purpose, temperature sensor is provided with eight altogether, and this temperature sensor is one-line digital temperature sensor, and the mode data transmission of eight temperature sensor employing one-wire bus is to single-chip microcomputer.Adopted the octuple temperature acquisition, got its maximal value common cathode and show.There are five common cathode LED dynamically to show, show way respectively, positive and negative and temperature.
The detection that utilization the utility model caliduct leaks and the prerequisite of locating device are will clear and definite pipeline location, and temperature sensor is placed on directly over the pipeline as much as possible.Eight megadyne temperature degree sensors in the utility model are installed on the test rod, at the uniform velocity mobile along pipeline above pipeline through test rod, can read the surface temperature at this place, judge to provide whether leak according to temperature altitude and amplitude of variation.
Detection that the caliduct of the utility model leaks and the design of the software program of locating device can be divided into: master routine, temperature acquisition subroutine, display subroutine.Its main program flow chart is as shown in Figure 2, and the temperature transition subroutine is as shown in Figure 3.
The major function of master routine is to be responsible for the real-time demonstration of temperature, reads and handles DS18B20 and measure current temperature value, and temperature survey was carried out once in per 1 second, can within one second, measure the primary measured object like this.After powering on, system begins to patrol and examine the octuple temperature spot, and the maximal value of displays temperature, wait next test point to be inspected then.Single-chip microcomputer visit DS18B20 must strictness follow the unibus command sequence; Be initialization, ROM operation, memory function order; Be that single-chip microcomputer at first sends and skips DS18B20 coupling order all the sensors is operated, send the temperature transition order subsequently, sensor begins to carry out temperature transition.Because sensor has unique sequence number, so when temperature value reads, can read the temperature value of each point for measuring temperature one by one through coupling DS18B20 order.
After master routine begins, call the temperature transition subroutine, the maximal value of finding out the temperature of investigating and prosecuting transfers to display and shows.And send the warning search command, and detect DS18B20 institute temperature displayed and whether exceed restriction, then send alarm command to warning system if transfinite, then do not inquire about next new test point again if transfinite.Call the temperature transition subroutine if there is test point then to be circulated to, if there is not then master routine end of test point.
In the temperature transition subroutine, as shown in Figure 3, when program begins, carry out initialization equally earlier, skip memory rom delayed time 1 second after the temperature transition then, carried out resetting of DS18B20 again, with coupling DS18B20, read temperature value.If eight temperature sensors all read out, finish after then finding out maximal value wherein, if 8 temperature values of less than, DS18B20 again then resets.
Utilize detection that the utility model caliduct leaks and locating device to reaching 500 meters caliduct detection.Along pipeline rout, directly over pipeline, at the uniform velocity measure.Selected pipeline is area, China Central Plains 2～2:30 in morning one day of mid-December, and during this period of time, environment temperature is minimum to the influence of measuring.The surface temperature measurement data is as shown in Figure 4.
The laying temperature meter is located on the face of land under the situation that definite underground pipeline does not have to leak, measures with reference to surface temperature to be-2 ℃ and in the Measuring Time section, to remain unchanged.
The hardware circuit of the utility model is simple, is easy to realize, has overcome in the past that caliduct leaks and is difficult to find local defective, reduces cost effectively, has improved production efficiency, has reduced labour intensity.Very application prospects is being arranged, for the robotization detection and location that caliduct leaks are had laid a good foundation aspect the caliduct detection and location.
Claims (3)
1. the detection and the locating device that leak of a caliduct; It is characterized in that; This detection and locating device include temperature sensor, single-chip microcomputer and main frame; Described temperature sensor is provided with a plurality of and is distributed in the along the line of caliduct, and a plurality of temperature sensor single lines are connected to a bus, and this bus is connected to single-chip microcomputer through serial ports; Also be connected with power supply, keyboard, warning system and digital the demonstration on the described single-chip microcomputer respectively; This single-chip microcomputer connects main frame to keep communication through the RS232 interface, is provided with the memory device of the each point temperature value of storage temperature sensor acquisition in the described main frame, also is provided with and to the Changing Pattern statistical study of the each point temperature value analysis module with accurate location.
2. detection and locating device that a kind of caliduct according to claim 1 leaks; It is characterized in that; Described temperature sensor is provided with eight, and this temperature sensor is one-line digital temperature sensor, and the mode data transmission of eight temperature sensor employing one-wire bus is to single-chip microcomputer.
3. detection and locating device that a kind of caliduct according to claim 1 leaks is characterized in that, also are connected with data storage cell and reset circuit on the described single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204038264U CN202255773U (en) | 2011-10-21 | 2011-10-21 | Detecting and positioning device for leakage of caliduct |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204038264U CN202255773U (en) | 2011-10-21 | 2011-10-21 | Detecting and positioning device for leakage of caliduct |
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| CN202255773U true CN202255773U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204038264U Expired - Fee Related CN202255773U (en) | 2011-10-21 | 2011-10-21 | Detecting and positioning device for leakage of caliduct |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319024A (en) * | 2014-07-17 | 2016-02-10 | 中国石油化工股份有限公司 | Online leakage point positioning method of air separation cold box |
| CN105805562A (en) * | 2016-04-06 | 2016-07-27 | 青岛瑞雪兆散热器有限公司 | Automatic detection control method for overflow leakage of liquid pipeline |
-
2011
- 2011-10-21 CN CN2011204038264U patent/CN202255773U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105319024A (en) * | 2014-07-17 | 2016-02-10 | 中国石油化工股份有限公司 | Online leakage point positioning method of air separation cold box |
| CN105805562A (en) * | 2016-04-06 | 2016-07-27 | 青岛瑞雪兆散热器有限公司 | Automatic detection control method for overflow leakage of liquid pipeline |
| CN105805562B (en) * | 2016-04-06 | 2018-05-18 | 青岛瑞雪兆散热器有限公司 | A kind of liquid line spill and leakage automatic detection control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20141021 |
|
| EXPY | Termination of patent right or utility model |