CN114518191A - Non-intrusive pipeline pressure measurement clamp based on ultrasonic longitudinal wave reflection technology - Google Patents
Non-intrusive pipeline pressure measurement clamp based on ultrasonic longitudinal wave reflection technology Download PDFInfo
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- CN114518191A CN114518191A CN202111670211.2A CN202111670211A CN114518191A CN 114518191 A CN114518191 A CN 114518191A CN 202111670211 A CN202111670211 A CN 202111670211A CN 114518191 A CN114518191 A CN 114518191A
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- 238000009530 blood pressure measurement Methods 0.000 title claims abstract description 25
- 238000005516 engineering process Methods 0.000 title claims abstract description 20
- 239000000523 sample Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 16
- 230000005540 biological transmission Effects 0.000 description 8
- 238000002604 ultrasonography Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000003872 anastomosis Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
- G01L11/04—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by acoustic means
- G01L11/06—Ultrasonic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
- G01L27/005—Apparatus for calibrating pressure sensors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Physics & Mathematics (AREA)
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- Chemical & Material Sciences (AREA)
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a non-intrusive pipeline pressure measurement clamp based on an ultrasonic longitudinal wave reflection technology, which comprises a clamp ruler body, wherein the clamp ruler body is sleeved with a digital scale display, and two ends of the clamp ruler body are respectively connected with a left longitudinal telescopic rod and a right longitudinal telescopic rod which are vertical to the clamp ruler body; the clamp is suitable for different pipe diameters, the fixing mode is quick and simple, and the loading can be finished in about one minute. The invention has simple structure, wide application range, strong practicability and low manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of pressure measurement calibration, and particularly relates to a non-intrusive pipeline pressure measurement clamp based on an ultrasonic longitudinal wave reflection technology.
Background
Pressure is one of the important process parameters in industrial production. With the development of economy and social progress, pressure measurement is deeply integrated into the production and life of people, such as various processes and reaction equipment in the metallurgical and medical industries; boilers and gas liquefaction facilities in the electrical and energy fields; reactor force shells in the nuclear industry; pressure cookers, liquefied gas tanks, and the like in daily life. Generally, pressure vessels are installed in harsh environments such as high pressure and high temperature, and the carried medium is mostly inflammable, explosive and strongly corrosive substances. Once leakage, damage or failure occurs in the operation process due to various reasons, casualties and economic losses can be caused, and the safety of lives and properties of the masses is directly threatened. Therefore, the pressure detection has special value and significance in production activities, the internal pressure of the pressure container must be monitored and dynamically controlled in real time in practical application, potential safety hazards which may appear can be eliminated in time, and the production benefits of enterprises are improved.
The traditional pressure detection is of an intervention type, and is characterized in that a pressure measuring instrument (a pressure gauge and a pressure transmitter) is required to be in full contact with a measured medium. Generally, a hole is formed in a container to be measured, a stop valve is installed at the position of the hole, and then a medium to be measured is led to a sensitive element of a pressure detection instrument through a pipeline. The intervention type pressure measurement is widely applied due to the characteristics of reliability, high precision and low price, but has the following disadvantages: 1) stress concentration is easily generated at the position of the opening, the stress peak value can reach 3-6 times of the stress of the film, and the service life of the container is shortened. 2) It is inconvenient to add additional test points. 3) Most of the loaded media are flammable, explosive and strong corrosive pressure vessels, which do not allow the opening of holes, and thus bring great difficulty to the pressure test. 4) Once the large-scale equipment is assembled and starts to operate, the large-scale equipment is difficult to stop at any time for detecting the pressure instrument, the assembly, disassembly and calibration of the whole set of equipment instrument needs high cost and large manpower, material resources and financial resources, and the problems of thread bursting, rusting of sliding threads at a joint and the like exist in the assembly and disassembly process; for the above disadvantages, the non-intrusive pressure detection method is improved to a certain extent.
Disclosure of Invention
The invention aims to provide a non-intrusive pipeline pressure measurement clamp based on an ultrasonic longitudinal wave reflection technology, which solves the problems that a stop valve needs to be additionally arranged on a pipeline wall opening based on the traditional pipeline pressure test, a pressure gauge is assembled along with the stop valve, the assembly labor intensity is high, the danger coefficient is high, and the efficiency is low.
The technical scheme adopted by the invention is that the non-intrusive pipeline pressure measurement clamp based on the ultrasonic longitudinal wave reflection technology comprises a clamp ruler body, wherein the clamp ruler body is sleeved with a digital scale display, and two ends of the clamp ruler body are respectively connected with a left longitudinal telescopic rod and a right longitudinal telescopic rod which are perpendicular to the clamp ruler body.
The invention is also characterized in that:
one side of the digital scale display is connected with a locking nut, and the locking nut extends into the digital scale display to be connected with the clamp ruler body;
the structure of the left longitudinal telescopic rod is the same as that of the right longitudinal telescopic rod, a locking nut and a locking nut A extend into one side of the left longitudinal telescopic rod and one side of the right longitudinal telescopic rod respectively, and a plurality of holes matched with the locking nut and the locking nut A are uniformly formed in the telescopic sections of the left longitudinal telescopic rod and the right longitudinal telescopic rod along the telescopic direction;
the end parts, far away from the clamp ruler body, of the left longitudinal telescopic rod and the right longitudinal telescopic rod are respectively connected with a quick attraction magnet, the quick attraction magnets are used for attracting a pipeline, and one side, far away from the pipeline, of each quick attraction magnet is connected with an ultrasonic transducer probe;
wherein the quick-acting magnet is fixed with a probe fixing seat, and the ultrasonic transducer probe is fixed on the probe fixing seat;
wherein, the surface of the quick attracting magnet connected with the pipeline is a cambered surface.
The invention has the beneficial effects that:
the clamp for non-intrusive pipeline pressure measurement based on the ultrasonic longitudinal wave reflection technology is applicable to different pipe diameters, the fixing mode is quick and simple, and the clamp can be loaded in about one minute. The invention has the advantages of simple structure, wide application range, strong practicability and low manufacturing cost.
Drawings
FIG. 1 is a schematic diagram of the assembly of the clamp and the pressure pipe for non-intrusive pipe pressure measurement based on ultrasonic longitudinal wave reflection technology of the present invention;
FIG. 2 is a schematic structural diagram of an ultrasonic transduction probe in a fixture for non-intrusive pipeline pressure measurement based on ultrasonic longitudinal wave reflection technology;
FIG. 3 is a schematic diagram illustrating the attachment of an ultrasonic transducer probe to a pressure pipe in the non-intrusive pipe pressure measurement fixture based on the ultrasonic longitudinal wave reflection technology of the present invention;
FIG. 4 is a schematic structural diagram of a ruler body of the fixture for non-intrusive pipeline pressure measurement based on ultrasonic longitudinal wave reflection technology;
FIG. 5 is a schematic diagram of the propagation path of ultrasonic waves in the pipeline liquid in the non-intrusive pipeline pressure measurement clamp based on the ultrasonic longitudinal wave reflection technology;
FIG. 6 is a schematic diagram of the equipment-in-fixture pressure measurement of the non-intrusive pipe pressure measurement based on ultrasonic longitudinal wave reflection technology of the present invention.
In the figure, 1, a clamp ruler body, 2, a digital scale display, 3, a display screen, 4, a dial, 5, a locking nut, 6, a locking nut B, 7, a locking nut A, 8, a left longitudinal telescopic rod, 9, a right longitudinal telescopic rod, 10, an ultrasonic transducer probe, 11, a probe fixing seat, 12, a quick-suction magnet and 13, a pressure pipeline are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention provides a non-intrusive pipeline pressure measurement clamp based on an ultrasonic longitudinal wave reflection technology, as shown in figure 1, a left longitudinal telescopic rod 8 and a right longitudinal telescopic rod 9 are adjusted to be larger than the radius of a pressure pipeline 13 through a side longitudinal telescopic locking nut B6 and a locking nut A7 by a visual measurement method, and the lengths of the left telescopic rod and the right telescopic rod are relatively parallel and level;
as shown in fig. 2, the ultrasound transducer probe 10 is coated with a coupling agent, so that the ultrasound transmission must be mediated by a anastomosis agent to avoid serious signal loss, which is indispensable;
the digital scale display 2 is connected with the clamp ruler body 1, the displacement length is displayed on the display screen 3 by moving the length of the digital scale display 2 on the clamp ruler body 1, the clamp penetrates through the diameter position of the pressure pipeline 13 to quickly attract the magnet 12, the maximum diameter of the pressure pipeline is found, and then the clamp is locked by the locking nut 5, namely the clamp is fixed;
as shown in fig. 3, the ultrasound transducer probe is attached to the pressure pipe, and as shown in fig. 2, the ultrasound transducer probe 10 is required to have a diameter equal to (or not much different from) the diameter of the pressure pipe;
as shown in fig. 4, the digital display device is schematically shown, in order to distinguish the maximum diameter size of the pressure pipeline 13 more intuitively and read the numerical value conveniently and quickly, a lithium battery is arranged inside the digital scale display 2, and the digital scale display can be charged;
as shown in FIG. 5, the propagation path of the ultrasound in the pipe, the transmitting ultrasonic transducer T emits an incident wave A1 perpendicular to the pipe wall, and generates a transmitted wave A2 and a reflected wave A' when passing through the boundary between the pipe and the liquid, and the transmitted wave A2 generates a transmitted wave A3 and a reflected wave B1 at the boundary between the liquid and the pipe wall. The transmitted wave A3 travels through the tube wall to the receiving transducer R, the time at this time is recorded as t0, the reflected wave B2 is generated at the interface between the tube wall and the outside air, B3 is generated at the interface between the tube wall and the liquid by B2, and the time when B3 travels through the tube wall to the transducer is recorded as t 1. The reflected wave B1 generates a reflected wave B5 through the liquid and the pipe wall, B5 transmits to the junction of the pipe wall and the liquid through a liquid medium to generate a transmitted wave B6, and B6 transmits to a time record t2 of the receiving transducer R through the pipe wall; the transmission time of the reflected waves B2 and B3 is t1-t2, the transmission time of the reflected waves B1, B5 and B6 is t3-t1, and the accurate transmission time of the ultrasonic waves in the liquid is delta t (t3-t1) - (t1-t 2)/2;
the propagation speed of the ultrasound is related to the liquid pressure, and the influence of the liquid temperature on the propagation speed of the ultrasound is large; therefore, the system uses the AA grade PT1000 platinum resistor to test the temperature of the liquid, and in order to enable the test temperature to be better close to the real temperature of the liquid, the outside of the temperature probe is subjected to heat insulation treatment except the contact surface with the pipeline. The ultrasonic transmission time and the liquid measurement temperature are used as input parameters, the pressure is used as output, and a pressure calculation model is established by a bilinear interpolation method:
f(x,y)＝f(XF,YF)*(1-(x-XF))*(1-(y-YF))
+f(XF+1,YF)*(x-XF)*(1-(y-YF))
+f(XF,YF+1)*(1-(x-XF))*(y-YF)*(1)
+f(XF+1,YF+1)*(x-XF)*(y-YF)
in the formula, f (x, y) is a final pressure value of calculation division, x is ultrasonic transmission time, y is a measured liquid temperature value, XF and YF are respectively ultrasonic transmission time and liquid temperature corresponding to a check point, and f (XF and YF) is a pressure value corresponding to the check point;
the pipeline liquid pressure measuring system based on the ultrasonic longitudinal wave echo-echo technology comprises the following steps:
1) arranging a pair of ultrasonic transmitting and receiving transducers and a temperature sensor on the outer surface of a pressure container, and when the transmitting transducers excite ultrasonic waves, ultrasonic longitudinal waves are transmitted and reflected for multiple times in a pipeline, recording required time nodes, wherein each transmission and reflection time node in the pipeline can change along with the change of temperature and pressure;
as shown in fig. 6, for ultrasonic pressure test laboratory equipment, need install automatic force pump additional and be the pressure source, automatic force pump links to each other with pipeline under pressure 13, ultrasonic transducer and pipeline under pressure 13 laminate mutually, temperature sensor down the same needs to paint couplant and paste in the pipeline, real-time supervision pipeline under pressure 13 temperature variation, ultrasonic transducer and temperature sensor communication and ultrasonic pressure gauge, through the conversion with the wave form signal, the wave form propagation time difference is the pressure value through software processing conversion, thereby realize pressure measurement's purpose.
Claims (6)
1. Non-intrusive pipeline pressure measurement's anchor clamps based on ultrasonic longitudinal wave reflection technique, its characterized in that includes anchor clamps blade (1), and digital scale display (2) have been cup jointed to anchor clamps blade (1), and anchor clamps blade (1) both ends are connected with respectively with anchor clamps blade (1) vertically vertical telescopic link in left side (8) and right side vertical telescopic link (9).
2. The clamp for non-intrusive pipeline pressure measurement based on ultrasonic longitudinal wave reflection technology as recited in claim 1, wherein a locking nut (5) is connected to one side of the digital scale display (2), and the locking nut (5) extends into the digital scale display (2) to be connected with the clamp body (1).
3. The clamp for non-intrusive pipeline pressure measurement based on ultrasonic longitudinal wave reflection technology according to claim 1, wherein the left longitudinal telescopic rod (8) and the right longitudinal telescopic rod (9) have the same structure, a locking nut B (6) and a locking nut A (7) respectively extend into one side of the left longitudinal telescopic rod (8) and one side of the right longitudinal telescopic rod (9), and a plurality of holes matched with the locking nut B (6) and the locking nut A (7) are uniformly formed in the telescopic sections of the left longitudinal telescopic rod (8) and the right longitudinal telescopic rod (9) along the telescopic direction.
4. The clamp for non-intrusive pipeline pressure measurement based on ultrasonic longitudinal wave reflection technology as recited in claim 1, wherein the ends of the left longitudinal telescopic rod (8) and the right longitudinal telescopic rod (9) far away from the clamp body (1) are respectively connected with a quick-attraction magnet (12), the quick-attraction magnet (12) is used for attracting the pipeline, and one side of the quick-attraction magnet (12) far away from the pipeline is connected with an ultrasonic transducer probe (10).
5. The clamp for non-intrusive pipeline pressure measurement based on ultrasonic longitudinal wave reflection technology as recited in claim 4, wherein the quick-acting magnet (12) is fixed with a probe holder (11), and the ultrasonic transducer probe (10) is fixed on the probe holder (11).
6. The clamp for non-intrusive pipeline pressure measurement based on ultrasonic longitudinal wave reflection technology as recited in claim 4, wherein the surface of the quick-attraction magnet (12) connected with the pipeline is a cambered surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111670211.2A CN114518191A (en) | 2021-12-30 | 2021-12-30 | Non-intrusive pipeline pressure measurement clamp based on ultrasonic longitudinal wave reflection technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111670211.2A CN114518191A (en) | 2021-12-30 | 2021-12-30 | Non-intrusive pipeline pressure measurement clamp based on ultrasonic longitudinal wave reflection technology |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130002992U (en) * | 2011-11-11 | 2013-05-22 | 엄대섭 | Electronic callipers |
| CN204989246U (en) * | 2015-08-25 | 2016-01-20 | 上海车功坊汽车服务有限公司 | Anchor clamps are measured to double -end concertina type |
| CN209588879U (en) * | 2019-02-26 | 2019-11-05 | 江西立信检测技术有限公司 | A kind of vernier caliper convenient for measuring major diameter steel |
| WO2020230124A1 (en) * | 2019-05-12 | 2020-11-19 | Azar Hagay | System and methods for fluid flow analysis |
| CN212946305U (en) * | 2020-08-07 | 2021-04-13 | 漳浦比速光电科技有限公司 | Clamp for electronic product production |
-
2021
- 2021-12-30 CN CN202111670211.2A patent/CN114518191A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130002992U (en) * | 2011-11-11 | 2013-05-22 | 엄대섭 | Electronic callipers |
| CN204989246U (en) * | 2015-08-25 | 2016-01-20 | 上海车功坊汽车服务有限公司 | Anchor clamps are measured to double -end concertina type |
| CN209588879U (en) * | 2019-02-26 | 2019-11-05 | 江西立信检测技术有限公司 | A kind of vernier caliper convenient for measuring major diameter steel |
| WO2020230124A1 (en) * | 2019-05-12 | 2020-11-19 | Azar Hagay | System and methods for fluid flow analysis |
| CN212946305U (en) * | 2020-08-07 | 2021-04-13 | 漳浦比速光电科技有限公司 | Clamp for electronic product production |
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