CN111122706A - Non-contact type pipeline foreign matter exploration device and method - Google Patents
Non-contact type pipeline foreign matter exploration device and method Download PDFInfo
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- CN111122706A CN111122706A CN201911279088.4A CN201911279088A CN111122706A CN 111122706 A CN111122706 A CN 111122706A CN 201911279088 A CN201911279088 A CN 201911279088A CN 111122706 A CN111122706 A CN 111122706A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/01—Indexing codes associated with the measuring variable
- G01N2291/011—Velocity or travel time
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
- G01N2291/2636—Surfaces cylindrical from inside
Abstract
The invention belongs to the technical field of measurement, and particularly relates to a non-contact pipeline foreign matter probing device and a probing method, aiming at solving the problem of high cost of a contact type measuring device. The device is integrated ultrasonic measurement module and infrared ray measurement module to a rifle shape structure, and the two is through mode change over switch control, and survey crew can the optional measurement mode, and data storage and CPU work area receive respectively, save and handle ultrasonic measurement module's time data, infrared measurement module's temperature data to whether stifled pipe is judged according to the preset condition, and the corresponding alarm that sends. The device belongs to trend measurement, and hand-held type rifle shape structure is easy and simple to handle moreover to greatly reduced measuring instrument cost and cost of labor. The device is applicable to the detection of foreign matters in the instrument tube of the measurement and sampling loop of the thermodynamic system, can accurately find the blocking position and is convenient to rapidly process.
Description
Technical Field
The invention belongs to the technical field of measurement, and particularly relates to a non-contact type pipeline foreign matter exploration device and an exploration method.
Background
In order to monitor, control and adjust the operating parameters of a thermodynamic system conveniently, the parameters such as flow, pressure, temperature, liquid level and the like in a closed container or a pipeline are required to be measured frequently, besides a temperature measuring point, a method of leading a sampling pipeline to a measuring transducer is generally adopted, in the design process, in consideration of the safety and convenience of operation and maintenance, a certain distance, generally about ten meters to twenty meters, is usually reserved between the installation position of the transducer and a primary equipment sampling point, and a balance container is required to be configured in a sampling loop aiming at a high-temperature and high-pressure fluid medium, so that the measuring sampling loop comprises a plurality of elements such as a primary door, a balance container, a sewage discharge door, a secondary door, an instrument tube, a valve group and the like. If the measures are not appropriate in the construction process and the pipeline flushing process, sundries such as welding slag, iron rust, stones and the like are often accumulated in the sampling loop, so that the sampling loop is leaked or blocked, and the measurement result is directly influenced. Because the measuring loops of liquid level, flow, pressure and the like need to be put into operation under certain thermodynamic system operation parameters, phenomena such as leakage or blockage in the sampling loop are difficult to search and process.
Therefore, it is an urgent need to solve the technical problems of the prior art to provide a non-contact type pipeline foreign object detecting device and method.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information is prior art that is known to a person skilled in the art.
Disclosure of Invention
The invention provides a non-contact type pipeline foreign matter exploration device and a non-contact type pipeline foreign matter exploration method.
In order to solve the technical problems, the invention comprises the following technical scheme:
a non-contact pipeline foreign matter exploration device comprises two measurement modules, a trigger switch, a mode selector switch, a data storage and CPU working area and a battery compartment, wherein the trigger switch, the mode selector switch, the data storage and CPU working area and the battery compartment are electrically connected with the measurement modules;
the measuring modules are respectively an ultrasonic measuring module and an infrared measuring module which are controlled by a mode selector switch,
the ultrasonic measurement module transmits the detected time data of the ultrasonic wave passing through the sampling loop to the data storage and CPU working area, and the data storage and CPU working area records and processes the received time data and judges whether the pipeline is blocked: if the actual measurement time is less than the theoretical time, judging that the pipe is blocked;
the infrared measurement module transmits temperature data of equidistant point type temperature measurement of the sampling loop to the data storage and CPU working area, and the data storage and CPU working area records and processes the received temperature data and judges whether the pipeline is blocked: and if the temperature of each test point is in a gradually descending trend, judging that the pipe is blocked.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention provides a non-contact pipeline foreign matter exploration device, which integrates an ultrasonic measurement module and an infrared measurement module into a gun-shaped structure, the ultrasonic measurement module and the infrared measurement module are controlled by a mode selector switch, a measurer can freely select a measurement mode, a data storage and CPU working area respectively receives, stores and processes time data of the ultrasonic measurement module and temperature data of the infrared measurement module, judges whether a pipe is blocked according to preset conditions and correspondingly sends an alarm. The device measures and calculates the difference of the wave velocity when the ultrasonic wave is filled with liquid in the instrument pipeline and has blocked solid to estimate whether the pipeline has the blocking condition, sends out an alarm and estimates the type of the content in the pipeline according to the measured wave velocity. Compared with a contact type ultrasonic thickness gauge, the device does not need to reach the measurement precision of a contact type measurement device during measurement, belongs to trend measurement, and is simple and convenient to operate, so that the cost of the measurement instrument and the labor cost are greatly reduced. The device is applicable to the detection of foreign matters in the instrument tube of the measurement and sampling loop of the thermodynamic system, can accurately find the blocking position and is convenient to rapidly process.
And further, the device also comprises a human-computer interaction interface area which is used for displaying the result of the pipeline blockage condition to a user.
Further, the probing device is a handheld gun-shaped structure, wherein the battery chamber is located in a handheld area, and the trigger switch is located in an index finger action area.
The invention also provides a probing method by using the non-contact type pipeline foreign matter probing device, which comprises the following steps:
step one, enabling the non-contact type pipeline foreign matter exploration device to be close to a pipeline;
selecting a measurement module through a mode selector switch, manually starting a trigger switch, and starting measurement;
step three, displaying whether the pipe is blocked or not in a human-computer interaction interface area;
and step four, if the pipe is blocked, cutting off the pipeline at the pipe blocking part, and dredging and repairing.
Further, the second step includes that when the ultrasonic measurement module is selected, the ultrasonic measurement module transmits the time data of the detected ultrasonic wave passing through the sampling loop to the data storage and CPU working area, the data storage and CPU working area records and processes the received time data and judges whether the pipeline is blocked, wherein the judgment formula is that if Tc is less than T, the judgment formula is that the pipeline is blockedJIf so, blocking the pipe; t isJ＝H/v1；Tc＝t2-t1
TJThe ultrasonic wave passes through the inner side of the sampling pipeline for theoretical time; tc is the actual measurement time of the ultrasonic wave passing through the inner side of the sampling pipeline; h is the inner diameter of the pipeline; v. of1The speed of the ultrasonic wave in the medium in the pipe is 1.4732 mm/us; taking oil at 1.42 mm/us; t is t1The first reflection return time of the ultrasonic wave; t is t2The second reflection return time of the ultrasonic wave.
Further, the second step includes, when the infrared measurement module is selected, taking three or five temperature measurement points with equal intervals from the sampling point to the measurement point under the condition of pipeline hot flushing, the infrared measurement module transmitting the temperature data of sampling loop equidistant point type temperature measurement to the data storage and CPU working area, the data storage and CPU working area recording and processing the received temperature data and judging whether the pipeline is blocked, wherein the judgment formula is T1>T2>T3>T4＝T5Then T is4、T5The area where the point is located is a pipeline blockage area.
Furthermore, the detection device is provided with an LCD display screen, the material of the pipe wall, the pipe diameter, the wall thickness and the medium are input through a human-computer interaction interface area, the detection device can be preset aiming at a special application scene, alarm information can be sent out during detection, and the property or the category of a blockage in a sampling pipeline can be calculated according to the measurement time. The visual probing device is applicable to nonstandard pipelines and has a wide application range.
Further, the special application scenario includes: the device is used for measuring the water level of the boiler drum and balancing the situation of the pipe in the container and the situation that the mediums in different pipes are different.
Furthermore, the probing device is not provided with a display screen, the material of the pipe wall and the medium of the pipeline are preset and solidified in the program and cannot be modified, the pipe diameter and the wall thickness are selected through shifting, and a light and a sound alarm are given out when a foreign matter is detected in the sampling pipeline. The probing device is basic, low in cost, suitable for standard pipelines, low in manufacturing cost and convenient and fast to use.
Drawings
FIG. 1 is a schematic structural diagram of a non-contact pipeline foreign object detection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a method for inspecting a non-contact type pipeline foreign object inspection device according to an embodiment of the present invention;
FIG. 3 is a temperature trend diagram of a five-point thermometry method in a probing method of a non-contact type pipeline foreign matter probing device according to an embodiment of the present invention;
in the figure:
1-probing device, 11-ultrasonic measuring module, 12-infrared measuring module, 13-trigger switch, 14-mode switch, 15-data storage and CPU working area, 16-battery chamber, 17-man-machine interface area; 2-sampling pipeline.
Detailed Description
The following provides a non-contact pipeline foreign object detection device and a non-contact pipeline foreign object detection method, which are described in detail with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will become apparent when considered in conjunction with the following description and claims. Advantages and features of the present invention will become apparent from the following description and from the claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
The working principle is as follows:
the non-contact pipeline blockage detection device comprises two temperature measurement modules, namely an ultrasonic measurement module and an infrared measurement module, wherein the working principle of the ultrasonic measurement module is as follows: when the ultrasonic wave emitted by the probe passes through an object to be measured, the ultrasonic wave is reflected on the interfaces of different materials of the object to be measured, so that the wave travel time of the ultrasonic wave in the material with a certain thickness is measured, and the wave speeds of the ultrasonic wave are different when the ultrasonic wave passes through the objects with different materials, so that the wave travel times are different under the condition of the same thickness. The working principle of the infrared temperature measurement module is as follows: the method is used for auxiliary judgment of an ultrasonic exploration mode.
Example one
The following describes a non-contact type pipeline foreign object detection device and a non-contact type pipeline foreign object detection method according to the present invention with reference to fig. 1 to 3.
Referring to fig. 1 and 2, a non-contact type pipeline foreign object detecting device 1 includes two measuring modules, a trigger switch 13 electrically connected to the measuring modules, a mode switch 14, a data storage and CPU working area 15, and a battery compartment 16; the measuring modules are respectively an ultrasonic measuring module 11 and an infrared measuring module 12, and the two modules are controlled by a mode selector switch 14.
The ultrasonic measurement module 11 transmits the detected time data of the ultrasonic wave passing through the sampling loop to the data storage and CPU working area 15, the data storage and CPU working area 15 records and processes the received time data, and judges whether the pipeline is blocked: if the actual measurement time is less than the theoretical time, judging that the pipe is blocked;
the infrared measurement module 12 transmits the temperature data of the equidistant point type temperature measurement of the sampling loop to the data storage and CPU working area 15, the data storage and CPU working area 15 records and processes the received temperature data, and judges whether the pipeline is blocked: and if the temperature of each test point is in a gradually descending trend, judging that the pipe is blocked.
Specifically, the present embodiment provides a non-contact type device for detecting foreign matters in a pipeline, which integrates an ultrasonic measurement module 11 and an infrared measurement module 12 into a gun-shaped structure, the two are controlled by a mode switch 14, a measurer, i.e. a user, can freely select a measurement mode, a data storage and CPU working area 15 respectively receives, stores and processes time data of the ultrasonic measurement module 11 and temperature data of the infrared measurement module 12, and determines whether pipe blockage occurs according to preset conditions, and correspondingly sends an alarm. The device measures and calculates the difference of the wave velocity when the ultrasonic wave is filled with liquid in the instrument pipeline and has blocked solid to estimate whether the pipeline is blocked or not, correspondingly gives an alarm, and calculates the type of the content in the pipeline according to the measured wave velocity. Compared with a contact type ultrasonic thickness gauge, the device does not need to reach the measurement precision of a contact type measurement device during measurement, belongs to trend measurement, and is simple and convenient to operate, so that the cost of the measurement instrument and the labor cost are greatly reduced. In addition, the device provides power through battery compartment 16, has improved the portability, has promoted user experience. The device is applicable to the detection of foreign matters in the instrument tube of the measurement and sampling loop of the thermodynamic system, can accurately find the blocking position and is convenient to rapidly process.
In the present embodiment, it is further preferable that a human-computer interface area 17 is further included, and the human-computer interface area 17 is used for displaying the result of the pipeline blockage situation to the user.
In this embodiment, it is further preferred that the investigation device 1 is a hand-held gun-shaped structure, wherein the battery compartment 16 is located in the hand-held area and the trigger switch 13 is located in the index finger action area.
The invention also provides a probing method by using the non-contact type pipeline foreign matter probing device, which comprises the following steps:
step one, enabling the non-contact type pipeline foreign matter exploration device 1 to approach a pipeline;
step two, selecting a measurement module through a mode selector switch 14, manually starting a trigger switch 13, and starting measurement;
step three, displaying whether the pipe is blocked or not in the human-computer interaction interface area 17;
and step four, if the pipe is blocked, cutting off the pipeline at the pipe blocking part, and dredging and repairing.
In this embodiment, more preferably, the second step includes, when the ultrasonic measurement module 11 is selected, the ultrasonic measurement module transmits the time data of the detected ultrasonic wave passing through the sampling loop to the data storage and CPU work area, and the data storage and CPU work area records and processes the received time data and determines whether the pipeline is blocked, where the determination formula is that if Tc < TJIf so, blocking the pipe; t isJ＝H/v1；Tc＝t2-t1
TJThe ultrasonic wave passes through the inner side of the sampling pipeline for theoretical time; tc is the actual measurement time of the ultrasonic wave passing through the inner side of the sampling pipeline; h is the inner diameter of the pipeline; v. of1The speed of the ultrasonic wave in the medium in the pipe is 1.4732 mm/us; taking oil at 1.42 mm/us; t is t1The first reflection return time of the ultrasonic wave; t is t2The second reflection return time of the ultrasonic wave.
Referring to fig. 3, in this embodiment, more preferably, the second step includes, when the infrared measurement module 12 is selected, under the condition of hot flushing of the pipeline, taking five temperature measurement points with equal intervals from the sampling point to the measurement point, that is, a five-point temperature measurement method, the infrared measurement module 12 transmitting the temperature data of the equidistant point temperature measurement of the sampling loop to the data storage and CPU working area 15, the data storage and CPU working area 15 recording and processing the received temperature data, and determining whether the pipeline is blocked, wherein the determination formula is T1>T2>T3>T4＝T5Then T is4、T5The area where the point is located is a pipeline blockage area. Of course, three-point temperature measurement can be selected, and the specific method is the same as above.
In this embodiment, it is more preferable that the probing device 1 is provided with an LCD display screen, the material of the pipe wall, the pipe diameter, the wall thickness, and the medium are input through the human-computer interface area 17, and preset for a special application scenario, and during probing, not only can send an alarm message, but also can calculate the nature or type of the blockage in the sampling pipe 2 according to the measurement time. The visual probing device is applicable to nonstandard pipelines and has a wide application range.
In this embodiment, more preferably, the special application scenarios include: the device is used for measuring the water level of the boiler drum and balancing the situation of the pipe in the container and the situation that the mediums in different pipes are different.
In this embodiment, it is more preferable that the probing device 1 has no display screen, the material of the pipe wall and the medium of the pipe are preset and solidified in the program and are not modifiable, the pipe diameter and the wall thickness are selected by a shift, i.e., the mode selector switch 14, and a light and an audible alarm are given when a foreign object is detected in the sampling pipe 2. The probing device is basic, low in cost, suitable for standard pipelines, low in manufacturing cost and convenient and fast to use.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples. The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A non-contact pipeline foreign matter exploration device is characterized by comprising two measurement modules, a trigger switch, a mode selector switch, a data storage and CPU working area and a battery compartment, wherein the trigger switch, the mode selector switch, the data storage and CPU working area and the battery compartment are electrically connected with the measurement modules;
the measuring modules are respectively an ultrasonic measuring module and an infrared measuring module which are controlled by a mode selector switch,
the ultrasonic measurement module transmits the detected time data of the ultrasonic wave passing through the sampling loop to the data storage and CPU working area, and the data storage and CPU working area records and processes the received time data and judges whether the pipeline is blocked: if the actual measurement time is less than the theoretical time, judging that the pipe is blocked;
the infrared measurement module transmits temperature data of equidistant point type temperature measurement of the sampling loop to the data storage and CPU working area, and the data storage and CPU working area records and processes the received temperature data and judges whether the pipeline is blocked: and if the temperature of each test point is in a gradually descending trend, judging that the pipe is blocked.
2. The apparatus according to claim 1, further comprising a human-computer interface area for displaying the result of the pipe blockage situation to a user.
3. The device for detecting foreign bodies in pipelines according to claim 1, wherein the device is a hand-held gun-shaped structure, wherein the battery chamber is located in a hand-held area, and the trigger switch is located in an index finger action area.
4. A detection method by using a non-contact type pipeline foreign matter detection device is characterized by comprising the following steps:
firstly, a non-contact pipeline foreign matter exploration device as claimed in any one of claims 1 to 3 is close to a pipeline;
selecting a measurement module through a mode selector switch, manually starting a trigger switch, and starting measurement;
step three, displaying whether the pipe is blocked or not in the human-computer interaction interface area, and if the pipe is blocked, cutting off the pipeline at the pipe blocking part, and dredging and repairing the pipeline.
5. The probing method according to claim 4, wherein said second step comprises, when selecting the ultrasonic measurement module, transmitting the time data of the detected ultrasonic wave passing through the sampling loop to the data storage and CPU working area, the data storage and CPU working area recording and processing the received time data and determining whether the pipeline is blocked, wherein the determination formula is that Tc < TJIf so, blocking the pipe; t isJ＝H/v1；Tc＝t2-t1
TJThe ultrasonic wave passes through the inner side of the sampling pipeline for theoretical time; t iscThe time is actually measured when the ultrasonic wave penetrates through the inner side of the sampling pipeline; h is the inner diameter of the pipeline; v. of1The speed of the ultrasonic wave in the medium in the pipe is 1.4732 mm/us; taking oil at 1.42 mm/us; t is t1The first reflection return time of the ultrasonic wave; t is t2The second reflection return time of the ultrasonic wave.
6. The probing method according to claim 4, wherein said second step comprises, when selecting the infrared measurement module, under the condition of hot flushing of the pipeline, taking three or five temperature measurement points with equal distance from the sampling point to the measurement point, said infrared measurement module transmitting the temperature data of the equidistant point temperature measurement of the sampling loop to said data storage and CPU working area, said data storage and CPU working area recording and processing the received temperature data and determining whether the pipeline is blocked, wherein the determination formula is T1>T2>T3>T4＝T5Then T is4、T5The area where the point is located is a pipeline blockage area.
7. The exploration method according to claim 4, wherein the exploration device is provided with an LCD display screen, the material of the pipe wall, the pipe diameter, the wall thickness and the medium are input through a human-computer interaction interface area, and can be preset according to a special application scene, and during exploration, the device not only can send alarm information, but also can deduce the nature or the category of a blockage in a sampling pipeline according to the measurement time.
8. The probing method according to claim 7, wherein said special application scenario comprises: the device is used for measuring the water level of the boiler drum and balancing the situation of the pipe in the container and the situation that the mediums in different pipes are different.
9. The detection method according to claim 4, wherein the detection device has no display screen, the material of the pipe wall and the medium of the pipe are preset and solidified in the program and cannot be modified, the pipe diameter and the wall thickness are selected by shifting, and a light and an audible alarm are given when a foreign body is detected in the sampling pipeline.
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