CN110410686A - A kind of water supply line icing detection system and method based on ultrasound - Google Patents
A kind of water supply line icing detection system and method based on ultrasound Download PDFInfo
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- CN110410686A CN110410686A CN201910840077.2A CN201910840077A CN110410686A CN 110410686 A CN110410686 A CN 110410686A CN 201910840077 A CN201910840077 A CN 201910840077A CN 110410686 A CN110410686 A CN 110410686A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title abstract description 10
- 239000000523 sample Substances 0.000 claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 230000001360 synchronised effect Effects 0.000 claims description 13
- 230000008014 freezing Effects 0.000 claims description 10
- 238000007710 freezing Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses a kind of water supply line icing detection system and methods based on ultrasound, the system includes: ultrasonic wave transmitting probe, ultrasonic wave receiving transducer, fixed bracket, the ultrasonic wave transmitting probe is symmetrically distributed in water supply line outer wall two sides by fixed bracket with ultrasonic wave receiving transducer, the fixed bracket both sides of the face are surrounded by spring catch, the outside and inside of each spring catch are provided with identical round hole, the round hole that stud is placed through outside is screwed into the threaded hole on fixed bracket, inserted link both ends are each passed through the horizontal round hole positioned inside being oppositely arranged and are inserted into the smooth hole on fixed bracket.The application is by measurement and compares in water supply line without ultrasonic wave passes through the time of water supply line cross section when doubtful icing in icing and water supply line, judge whether to occur to freeze and determine pipeline icing thickness, the heat flow that can effectively instruct tube wall to heat reaches energy-efficient effect.
Description
Technical field
The invention belongs to water supply line icing detection field, specifically a kind of water supply line based on ultrasound, which freezes, to be visited
Examining system and method.
Background technique
In China's cold district winter, tube fluid easily freezes when water supply line is in low temperature environment.When in pipe
When water velocity is lower or remains static, icing degree is further exacerbated by and induces line clogging.In order to prevent or alleviate
Low temperature environment water supply line freezes, and pipeline electric tracing is the solution being most widely used at present.By in pipeline wall surface shape
At high temperature or hot-fluid boundary, realizes that water flow freezes and inhibit or melt layers of ice target.However, the water flow knot in default of in pipeline
The information such as ice position, layers of ice thickness know that electrically heat tracing heating power and start-stop time are difficult to accurately match pipeline icing
Situation.If can not be to pipeline icing conditions real-time monitoring, long-time, high-power operation electric heat tracing device will certainly generate higher
Power consumption.At this point, low temperature environment water supply line icing conditions are accurately detected, it will be to the system of water supply line heating and operation reserve
Surely there is important guiding effect, the reliability and economy use guarantee clear water supply system has significant engineering value.
Currently, document and patent report in relation to low temperature environment water supply line icing detection system and method still have very much
Limit.Existing icing detection system is mainly used in the industry fields such as road, electric power, aviation, it may be assumed that detects target pair using sensor
The change of properties such as optics, electricity, mechanics, the acoustics generated after freezing as surface obtain icing conditions, including optical fiber type knot indirectly
Ice detection system, infrared type icing detection system, electricity formula icing detection system etc..However, fibre-optical freezing detection system and
Infrared type icing detection system is easy to be influenced by factors such as veiling glare environmental pollution, fiber transmission attenuations.Electricity formula icing detection
System is then restricted by the capacitance and its amplitude of variation of medium between pole plate, and there are certain error detector probability.Mechanical knot
Ice detection system needs to consider sensor resonant frequency temperature drift effects, detection accuracy and temperature-compensating close association.Thus
As it can be seen that existing icing detection systematic difference scene is with low temperature environment water supply line icing detection scene, there are significant difference, nothings
Method directly applies to low temperature environment water supply line icing detection.Meanwhile the anti-interference of icing detection system, accuracy and convenient
Property also needs further improvement.Therefore, development has the low temperature environment water supply line of certain applicability, accuracy and convenience
Icing detection system and method is particularly critical.
Summary of the invention
To solve the above-mentioned problems in the prior art, the application provides a kind of water supply line icing based on ultrasound
Detection system and method make the applicability, accuracy and convenience of low temperature environment water supply line icing detection be significantly improved.
To achieve the above object, a kind of technical solution of the application are as follows: water supply line icing detection based on ultrasound system
System, comprising: ultrasonic wave transmitting probe, ultrasonic wave receiving transducer, fixed bracket, the ultrasonic wave transmitting probe and ultrasonic wave receive
Probe is symmetrically distributed in water supply line outer wall two sides by fixed bracket, and the fixed bracket both sides of the face are surrounded by spring
Pin, the outside and inside of each spring catch are provided with identical round hole, and the round hole that stud is placed through outside is screwed into solid
In threaded hole on fixed rack, inserted link both ends are each passed through the horizontal round hole positioned inside being oppositely arranged and are inserted into fixed bracket
On smooth hole in；Upper springs pin is separately connected the vertical end of a L-type pin rod, the horizontal ends and ultrasound of the L-type pin rod
Wave transmitting probe is connected；Lower springs pin is separately connected the vertical end of a L-type pin rod, horizontal ends of the L-type pin rod and super
Acoustic receiver probe is connected.
It further, further include that ultrasonic wave transmitting and reception signal element, synchronous acquisition and Date Conversion Unit, communication are single
It is first to pass through signal wire and ultrasonic wave hair respectively with upper main computer unit, the ultrasonic wave transmitting and the input terminal of reception signal element
Penetrate probe, ultrasonic wave receiving transducer is connected, ultrasonic wave transmitting turns with the output end and synchronous acquisition and data for receiving signal element
The input terminal for changing unit is connected, and the output end of the synchronous acquisition and Date Conversion Unit is connected to communication unit and upper master
Machine unit.
Further, the ultrasonic wave transmitting is also connected with power supply unit with signal element is received.
Further, the bottom of the ultrasonic wave transmitting probe is in contact with water supply line, the top of ultrasonic wave transmitting probe
Portion is connected with corresponding four top L-type pin rod.
Further, the top of the ultrasonic wave receiving transducer is in contact with water supply line, the bottom of ultrasonic wave receiving transducer
Portion is connected with corresponding four lower parts L-type pin rod.
The application also provides a kind of water supply line icing detection method based on ultrasound, the specific steps are as follows:
S1, ultrasonic wave transmitting probe emit pulse signal, and pulse signal passes through the pipeline without the water supply line occurred that freezes
Wall and in-pipe flow are received by ultrasonic wave receiving transducer, and receiving time is t at this time1；
S2, ultrasonic wave transmitting probe emit pulse signal, and pulse signal passes through the pipe of the doubtful water supply line for freezing and occurring
Road wall, layers of ice and in-pipe flow are received by ultrasonic wave receiving transducer, and receiving time is t at this time2；
The receiving time t measured in S3, comparison step S1 and step S21With receiving time t2If t1=t2, then judge to supply
Occur in waterpipe without freezing；If t1>t2, then judge to freeze in tested water supply line, further execute step S4 and determine knot
The icing thickness δ of ice sheet；
S4, the icing thickness δ for having layers of ice in the water supply line for freezing and occurring is determined by following formula,
δ=(t1- t2) × u × c/2/ (u-c)
In formula, δ indicates icing thickness, and it is definite value that u and c, which respectively indicate ultrasonic wave under ice and water transmission speed, normal pressure,
It is inputted as known conditions.
Further, receiving time t1It is t with receiving time2, emit via ultrasonic wave and receive signal element completion
Pulse signal transmitting, probe excitation and echo signal reception, synchronous acquisition and Date Conversion Unit pass through high speed acquisition circuit reality
Now the reception of echo-signal and digital signal are converted, communication unit and upper main computer unit receive the number that superordinate elements input
Signal simultaneously shows receiving time t in upper host1With receiving time t2。
The present invention due to using the technology described above, can obtain following technical effect: by measuring and comparing water supply
In pipeline without freeze and water supply line in doubtful icing when ultrasonic wave pass through time of water supply line cross section, judge whether to occur
It freezes and determines pipeline icing thickness, the heat flow or heating temperature that can effectively instruct tube wall to heat reach energy-saving effect；It is logical
Crossing dismountable fixation, bracket is by ultrasonic wave transmitting probe and ultrasonic wave receiving transducer is fixed on pipeline, it can be achieved that water supply line
The random point in water flow flow direction flexibly detects；Icing thickness is the function of time and ultrasonic velocity, during variable test
Disturbance quantity is few, measurement is convenient.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the application；
Fig. 2 is the top view of the application；
Fig. 3 is the main view of the application；
Fig. 4 is the side view of the application；
Fig. 5 is the functional block diagram of the application.
Number explanation in figure: 1. ultrasonic wave transmitting probes, 2. ultrasonic wave receiving transducers, 3. fixed brackets, 4. ultrasonic waves hair
It penetrates and receives signal element, 5. synchronous acquisitions and Date Conversion Unit, 6. communication units and upper main computer unit, 7. power supplies are single
Member, 8. signal wires, 9. water supply lines, 10. duct walls, 11. layers of ices, 12. in-pipe flows, 13. spring catch, 14.L type pin rod,
15. round hole, 16. studs, 17. inserted links, 18. threaded holes, 19. smooth holes.
Specific embodiment
The embodiment of the present invention is implemented under the premise of the technical scheme of the present invention, gives detailed implementation
Mode and specific operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment 1
The present embodiment provides a kind of water supply line icing detection system based on ultrasound, including ultrasonic wave transmitting probe,
Ultrasonic wave receiving transducer, fixed bracket, the fixed bracket includes: fixed block a and fixed block b, in fixed block a and fixed block b
Inside middle portion is symmetrically arranged with groove, and water supply line runs through the groove；The surrounding of the fixed bracket both sides of the face is equipped with spring
Pin, every side end face are equipped with 4 spring catch, and the outside and inside of each spring catch are provided with identical round hole, and stud is worn
It crosses outer circular hole to be screwed on fixed bracket in corresponding threaded hole, inserted link is each passed through the horizontal inner circular hole being oppositely arranged
And then be inserted into the smooth hole on fixed bracket, fixed block a and fixed block b are connected and fixed by 8 root cutting bars；The 4 of top two sides
A spring catch is separately connected the vertical end of a L-type pin rod, and the horizontal ends of the L-type pin rod are connected with ultrasonic wave transmitting probe；
4 spring catch of lower part two sides are separately connected the vertical end of a L-type pin rod, and horizontal ends and the ultrasonic wave of the L-type pin rod connect
Probe is received to be connected.The vertical end of L-type pin rod is located at the middle position of spring catch；The bottom of the ultrasonic wave transmitting probe and water supply
Pipeline is in contact, and the top of the ultrasonic wave receiving transducer is in contact with water supply line, the ultrasonic wave transmitting probe and ultrasound
The fixation bracket of wave receiving transducer is symmetricly set on water supply line outer wall two sides.
Preferably, the application further includes ultrasonic wave transmitting and receives signal element, synchronous acquisition and Date Conversion Unit, leads to
Unit and upper main computer unit are interrogated, the ultrasonic wave transmitting passes through signal wire and ultrasound with the input terminal for receiving signal element respectively
Wave transmitting probe, ultrasonic wave receiving transducer are connected, ultrasonic wave transmitting and the output end and synchronous acquisition and number that receive signal element
According to converting unit input terminal be connected, the output end of the synchronous acquisition and Date Conversion Unit be connected to communication unit with it is upper
Position main computer unit；The ultrasonic wave transmitting is also connected with power supply unit with signal element is received.
Embodiment 2
The application also provides a kind of water supply line icing detection method based on ultrasound, the specific steps are as follows:
S1, ultrasonic wave transmitting probe emit pulse signal, and pulse signal passes through the pipeline without the water supply line occurred that freezes
Wall and in-pipe flow are received by ultrasonic wave receiving transducer, and receiving time is t at this time1；
S2, ultrasonic wave transmitting probe emit pulse signal, and pulse signal passes through the pipe of the doubtful water supply line for freezing and occurring
Road wall, layers of ice and in-pipe flow are received by ultrasonic wave receiving transducer, and receiving time is t at this time2；
The receiving time t measured in S3, comparison step S1 and step S21With receiving time t2If t1=t2, then judge to supply
Occur in waterpipe without freezing；If t1>t2, then judge to freeze in tested water supply line, further execute step S4 and determine knot
The icing thickness δ of ice sheet；
S4, the icing thickness δ for having layers of ice in the water supply line for freezing and occurring is determined by following formula,
δ=(t1- t2) × u × c/2/ (u-c)
In formula, δ indicates icing thickness, and it is definite value that u and c, which respectively indicate ultrasonic wave under ice and water transmission speed, normal pressure,
It is inputted as known conditions.
Preferably, receiving time t1It is t with receiving time2, emit via ultrasonic wave and receive signal element completion arteries and veins
Signal transmitting, probe excitation and echo signal reception, synchronous acquisition and Date Conversion Unit is rushed to realize by high speed acquisition circuit
The number that reception and digital signal conversion to echo-signal, communication unit and upper main computer unit receive superordinate elements input is believed
Number and upper host show receiving time t1With receiving time t2。
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
The those of ordinary skill in art field can also make several improvements and modifications without departing from the technical principles of the invention,
These improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of water supply line icing detection system based on ultrasound characterized by comprising ultrasonic wave transmitting probe surpasses
Acoustic receiver probe, fixed bracket, the ultrasonic wave transmitting probe are symmetrical by fixed bracket with ultrasonic wave receiving transducer
In water supply line outer wall two sides, the fixed bracket both sides of the face are surrounded by spring catch, the outside of each spring catch and interior
Side is provided with identical round hole, and the round hole that stud is placed through outside is screwed into the threaded hole on fixed bracket, inserted link
Both ends are each passed through the horizontal round hole positioned inside being oppositely arranged and are inserted into the smooth hole on fixed bracket；Upper springs pin
It is separately connected the vertical end of a L-type pin rod, the horizontal ends of the L-type pin rod are connected with ultrasonic wave transmitting probe；Lower springs
Pin is separately connected the vertical end of a L-type pin rod, and the horizontal ends of the L-type pin rod are connected with ultrasonic wave receiving transducer.
2. a kind of water supply line icing detection system based on ultrasound according to claim 1, which is characterized in that further include
Ultrasonic wave transmitting and reception signal element, synchronous acquisition and Date Conversion Unit, communication unit and upper main computer unit are described super
Sound wave transmitting passes through signal wire and ultrasonic wave transmitting probe, ultrasonic wave receiving transducer phase with the input terminal for receiving signal element respectively
Even, ultrasonic wave transmitting is connected with the output end and synchronous acquisition for receiving signal element with the input terminal of Date Conversion Unit, described
The output end of synchronous acquisition and Date Conversion Unit is connected to communication unit and upper main computer unit.
3. a kind of water supply line icing detection system based on ultrasound according to claim 2, which is characterized in that described super
Sound wave transmitting is also connected with power supply unit with signal element is received.
4. a kind of water supply line icing detection system based on ultrasound according to claim 1, which is characterized in that described super
The bottom of sound wave transmitting probe is in contact with water supply line, the top of ultrasonic wave transmitting probe and corresponding four top L-type pin
Bar is connected.
5. a kind of water supply line icing detection system based on ultrasound according to claim 1, which is characterized in that described super
The top of acoustic receiver probe is in contact with water supply line, the bottom of ultrasonic wave receiving transducer and corresponding four lower parts L-type pin
Bar is connected.
6. a kind of water supply line icing detection method based on ultrasound, which is characterized in that specific step is as follows:
S1, ultrasonic wave transmitting probe emit pulse signal, pulse signal pass through without freeze occur water supply line duct wall and
In-pipe flow is received by ultrasonic wave receiving transducer, and receiving time is t at this time1；
S2, ultrasonic wave transmitting probe emit pulse signal, pulse signal pass through it is doubtful freeze occur water supply line duct wall,
Layers of ice and in-pipe flow are received by ultrasonic wave receiving transducer, and receiving time is t at this time2；
The receiving time t measured in S3, comparison step S1 and step S21With receiving time t2If t1=t2, then judge water supply line
It is interior to occur without freezing；If t1>t2, then judge to freeze in tested water supply line, further execute step S4 and determine layers of ice
Icing thickness δ；
S4, the icing thickness δ for having layers of ice in the water supply line for freezing and occurring is determined by following formula,
δ=(t1- t2) × u × c/2/ (u-c)
In formula, δ indicates icing thickness, and it is definite value that u and c, which respectively indicate ultrasonic wave under ice and water transmission speed, normal pressure, as
Known conditions input.
7. a kind of water supply line icing detection method based on ultrasound according to claim 1, which is characterized in that when reception
Between be t1It is t with receiving time2, via ultrasonic wave emit with receive signal element complete pulse signal transmitting, probe excitation and
Echo signal reception, synchronous acquisition and Date Conversion Unit realize the reception and number to echo-signal by high speed acquisition circuit
Signal conversion, communication unit and upper main computer unit receive the digital signal of input and show receiving time t in upper host1With
Receiving time t2。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111765385A (en) * | 2020-07-07 | 2020-10-13 | 傅中伟 | Icing blockage monitoring system for drain pipe of refrigerator |
| CN113007607A (en) * | 2021-03-02 | 2021-06-22 | 东北大学 | Deep well filling pipeline operation condition ultrasonic diagnosis system and method |
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| CN102998372A (en) * | 2012-12-04 | 2013-03-27 | 常州翰力信息科技有限公司 | Fixing device of flaw detecting machine |
| RU2612238C1 (en) * | 2015-11-30 | 2017-03-03 | Акционерное общество "Акустический институт имени академика Н.Н. Андреева" | Device for intensification of heavy oil pumping in pipelines |
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2019
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|---|---|---|---|---|
| JPS60256049A (en) * | 1984-06-01 | 1985-12-17 | Mitsubishi Electric Corp | Freezing forecast device |
| US5440930A (en) * | 1992-01-31 | 1995-08-15 | Elf Atochem S.A. | Ultrasonic measuring assembly and means for attaching same to a vessel |
| JPH10221137A (en) * | 1997-02-10 | 1998-08-21 | Tokimec Inc | Jig for fitting probe of cryogenic ultrasonic flowmeter |
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| CN111765385A (en) * | 2020-07-07 | 2020-10-13 | 傅中伟 | Icing blockage monitoring system for drain pipe of refrigerator |
| CN113007607A (en) * | 2021-03-02 | 2021-06-22 | 东北大学 | Deep well filling pipeline operation condition ultrasonic diagnosis system and method |
| CN113007607B (en) * | 2021-03-02 | 2022-04-26 | 东北大学 | Deep well filling pipeline operation condition ultrasonic diagnosis system and method |
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