CN1068430C - Self-correcting supersonic level gauge - Google Patents
Self-correcting supersonic level gauge Download PDFInfo
- Publication number
- CN1068430C CN1068430C CN93102729A CN93102729A CN1068430C CN 1068430 C CN1068430 C CN 1068430C CN 93102729 A CN93102729 A CN 93102729A CN 93102729 A CN93102729 A CN 93102729A CN 1068430 C CN1068430 C CN 1068430C
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- China
- Prior art keywords
- transducer
- ultrasonic
- ultrasonic transducer
- liquid
- present
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- Expired - Fee Related
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- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 230000011514 reflex Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The present invention relates to an ultrasonic measurement device for the rod position of a reactor control rod and the liquid levels of liquid media in different working conditions. The present invention is characterized in that a reflecting ring is arranged in an ultrasonic measurement pipe. The present invention has the advantages of simple structure and low cost. Besides, the present invention is easy to popularize to measure the rob positions of control rods of various reactors and the liquid levels of liquid media in various working conditions.
Description
The present invention relates to ultrasound wave to reactor control bar position and to the measuring technique of the liquid level of liquid medium under the various operating modes.
Measuring the liquid level of liquid medium and thing position therein such as the problem of reactor control bar position maximum with ultrasonic technology is exactly that ultrasound wave velocity of propagation in liquid medium changes with temperature, will cause the error of hyperacoustic level gauging indication like this.In the rod position measurement of the control rod of Tsing-Hua University's 5 megawatt process heat reactors, adopted Chinese patent CN90100692.0, it is the reflecting surface of fixed range that this patent is provided with a known reflecting surface apart from ultrasonic transducer, obtain real velocity of sound under actual condition by the mistiming between the reflected impulse of pulse of ultrasonic transducer emitting sound wave and stationary plane, utilize this velocity of sound to revise, but just require in system, to increase a ultrasonic transducer that produces the full sized pules signal like this for whole measuring system.When the actual use of engineering, will seeming too cumbersome and cause complicated operation, therefore less economical shortcoming makes its application surface be subjected to great limitation.Chinese patent CN90209099.2 is a kind of sonar formula liquid level gauge, use this liquid level gauge, measure the liquid level of variety classes and different temperatures liquid, except that a ultrasonic emitting, receiving transducer are installed, another calibration probe also to be set simultaneously, before each use liquid level gauge, should calibrate earlier, this patent structure complexity, complex operation.
The object of the present invention is to provide a kind of device of ultrasonic measuring liquid level of composite structure, make that can provide two kinds of reflected impulse signals with a ultrasonic probe is full sized pules signal and measurement pulse signal.Do not need to carry out any correction, just can to the liquid level of the liquid medium of various operating modes and thing position therein particularly reactor control bar position measure.
The present invention is made of ultrasonic measurement pipe and ultrasonic transducer, it is characterized in that establishing in measuring tube a fixing tore of reflection, and the material of tore of reflection should be the metal material of the corrosion of the medium of anti-the fluid to be measured.
Ultrasonic transducer joins together through welding and measuring tube, and transducer is installed in the bottom or the top of measuring tube; In measuring tube, be that a fixation reflex ring is established in the position of Lo apart from the reflecting surface of transducer for the known distance of determining, sub-fraction in the ultrasonic transducer ultrasonic waves transmitted, the ring that is reflected reflects back; Meet and major part moves on and be preset in the reflecting body of measuring in the liquid, after the reflection, its major part is passed tore of reflection, gets back to transducer to go, and can utilize following relation to obtain the velocity of sound.
Obtain with T then:
Promptly
L in the formula
o, L, T
o, T implication see description of drawings.
Ultrasonic transducer also can adopt Chinese patent CN87204877.Be the hermetically sealed three wafer ultrasonic transducers of high temperature radiation hardness.
The invention has the advantages that only adopting a ultrasonic probe that two kinds of signals can be provided is full sized pules signal and measurement pulse signal, do not need to increase the number of transducer, just slightly change, with regard to the liquid level of the various operating mode liquid mediums of energy measurement and thing position therein in follow-up signal Processing.Use the present invention, make measuring system not be subjected to temperature variation, also be not subjected to the different influence of medium, can be applied to liquid level and control rod rod position measurement in the nuclear reactor.
Description of drawings
Fig. 1 is a structural representation of the present invention.
1 ultrasonic transducer;
2 ultrasonic measurement pipes;
3 tores of reflection;
Reflecting body in the 4 test solution body fluid;
L
oThe distance of tore of reflection and ultrasonic transducer reflecting surface;
L is the reflecting body in the tested liquid level and the distance of ultrasonic transducer.
Fig. 2 is ultrasonic pulse and time relationship.
5 transponder pulses;
6 full sized puless;
7 measure pulse;
T
oThe time interval between transponder pulse and the full sized pules;
Reflecting body in T transponder pulse and the fluid to be measured is measured the time interval of pulse.
Embodiment:
The effective ICr18Ni 19Ti of present embodiment ultrasonic measurement stainless steel is made, ultrasonic transducer is installed in the top of measuring tube, the distance of fixation reflex ring and ultrasonic transducer reflecting surface is 500 millimeters, the distance of reflecting body in the fluid to be measured liquid level and ultrasonic transducer reflecting surface is the 500-10500 millimeter, the external diameter of fixation reflex ring is 45 millimeters, internal diameter is 39 millimeters, and thickness is 5 millimeters.Measure the liquid level of petroleum product, simple to operate.
Use the present invention, in measuring liquid level or when measuring thing position among liquid, be not acted upon by temperature changes, be not subjected to the different influence of medium yet, and the number of its transducer does not increase, just the software in follow-up signal processing slightly changes, and just can measure the liquid level of liquid medium or the thing position in the liquid medium exactly.
The present invention can be widely applied to the liquid level of measuring the liquid medium of various operating modes in the industry, example The liquid different such as oil, acid, alkali, salt and viscosity is for the rod position of measuring reactor control rod Also with practical value.
Claims (1)
1, a kind of liquid level emasuring device of forming by ultrasonic measurement pipe and ultrasonic transducer, it is characterized in that using a ultrasonic transducer probe that the full sized pules signal is provided and measure the above-mentioned ultrasonic transducer of pulse signal and join together through welding and measuring tube, transducer is installed in the bottom or the top of measuring tube, in measuring tube, be that the position of Lo is provided with a fixation reflex ring apart from the distance of the reflecting surface of transducer, sub-fraction is reflected to encircle and reflects back in the ultrasonic transducer ultrasonic waves transmitted, meet after the reflection and major part moves on and be preset at reflecting body in the liquid, its major part is passed tore of reflection, gets back to transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93102729A CN1068430C (en) | 1993-03-18 | 1993-03-18 | Self-correcting supersonic level gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93102729A CN1068430C (en) | 1993-03-18 | 1993-03-18 | Self-correcting supersonic level gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1092862A CN1092862A (en) | 1994-09-28 |
| CN1068430C true CN1068430C (en) | 2001-07-11 |
Family
ID=4984247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93102729A Expired - Fee Related CN1068430C (en) | 1993-03-18 | 1993-03-18 | Self-correcting supersonic level gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1068430C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6795015B2 (en) * | 2003-01-29 | 2004-09-21 | Saab Rosemount Tank Radar Ab | Bottom reflector for a radar-based level gauge |
| CN101794631B (en) * | 2010-03-12 | 2012-02-08 | 清华大学 | Self-calibration rod position measuring device |
| CN102607670B (en) * | 2012-04-01 | 2014-07-02 | 郑贵林 | Gas medium type self-calibrating ultrasonic liquid level measuring method and liquid level meter thereof |
| CN105486381A (en) * | 2015-12-07 | 2016-04-13 | 重庆多邦科技股份有限公司 | Sound wave water level gauge |
| CN105403288B (en) * | 2015-12-10 | 2018-09-18 | 新兴中燃城市燃气发展有限公司 | A kind of gas pipeline hydrops monitoring system and its monitoring method |
| CN105547413B (en) * | 2015-12-10 | 2018-10-02 | 山西铭石煤层气利用股份有限公司 | A kind of gas pipeline hydrops monitoring system and its monitoring method with blimp |
| CN105547414B (en) * | 2015-12-10 | 2018-12-14 | 徐州辛辛那提新型材料有限公司 | A kind of gas pipeline monitoring system and its monitoring method |
| CN105571675B (en) * | 2015-12-10 | 2018-12-14 | 徐州辛辛那提新型材料有限公司 | A kind of gas pipeline safety monitoring system and its monitoring method |
| CN106524933A (en) * | 2016-10-13 | 2017-03-22 | 厦门乃尔电子有限公司 | Microwave probe with metal reflecting surface loaded on radiation port |
| KR102425650B1 (en) * | 2017-12-26 | 2022-07-28 | 동구안 쳉양 일렉트로닉 메커니컬 컴퍼니, 리미티드 | Ultrasonic detectors and detection devices |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932243A1 (en) * | 1979-08-09 | 1981-02-12 | Eugen Rapp | LENGTH AND TEMPERATURE MEASURING DEVICE, ESPECIALLY FOR TANK SYSTEMS OR THE LIKE. |
| CN2100612U (en) * | 1990-06-26 | 1992-04-01 | 王定华 | Sonar levelmeter |
-
1993
- 1993-03-18 CN CN93102729A patent/CN1068430C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2932243A1 (en) * | 1979-08-09 | 1981-02-12 | Eugen Rapp | LENGTH AND TEMPERATURE MEASURING DEVICE, ESPECIALLY FOR TANK SYSTEMS OR THE LIKE. |
| CN2100612U (en) * | 1990-06-26 | 1992-04-01 | 王定华 | Sonar levelmeter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1092862A (en) | 1994-09-28 |
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