SU406109A1 - METHOD FOR DETERMINING SKILL THICKNESS ON THE INTERNAL SURFACES OF CAPACITIES - Google Patents

METHOD FOR DETERMINING SKILL THICKNESS ON THE INTERNAL SURFACES OF CAPACITIES

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Publication number
SU406109A1
SU406109A1 SU1701469A SU1701469A SU406109A1 SU 406109 A1 SU406109 A1 SU 406109A1 SU 1701469 A SU1701469 A SU 1701469A SU 1701469 A SU1701469 A SU 1701469A SU 406109 A1 SU406109 A1 SU 406109A1
Authority
SU
USSR - Soviet Union
Prior art keywords
thickness
capacities
internal surfaces
determining
temperature
Prior art date
Application number
SU1701469A
Other languages
Russian (ru)
Inventor
А. Буравлев С.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to SU1701469A priority Critical patent/SU406109A1/en
Application granted granted Critical
Publication of SU406109A1 publication Critical patent/SU406109A1/en

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  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Description

1one

Изобретение отн-оситс  к области измерительной техними и может быть использовано дл  определени  толщины ,наки-пи «а внутренних поверхност х емкостей, например трубок теплообменных аппар атов.The invention relates to the field of measurement techniques and can be used to determine the thickness, naki-pi "and the inner surfaces of containers, such as tubes of heat exchange apparatus.

Известны способы определени  толщины на.,и ,н.а внутренних поверхност х емкостей, заключающиес  в том, что за.мер ют стационарную температуру поверхности емкости, определ ют теплопроводность поверхаюсти и составл ют HOiMorpaMMbi, но которым определ . ют толщину накипи.Methods are known for determining the thickness on., And, on the inner surfaces of the containers, which consist in measuring the stationary temperature of the surface of the container, determining the thermal conductivity of the surface and making up the HOiMorpaMMbi, but to which it is determined. are thickened by scale.

Однако точность измерени  по этим способам недостаточна  из-за того, что табличные значени  теплопроводности «е точно соответствуют реальным значени м теплопроводности .исследуемого сло  внутри емкости.However, the measurement accuracy of these methods is insufficient because the tabulated values of thermal conductivity do not exactly correspond to the real values of thermal conductivity of the test layer inside the vessel.

С целью устранени  этого недостатка но предлагаемому способу создают кратковременный импульс электрического тока на поверхности емкости, за.мер ют вызванное им возрастание температуры новерхности и, сравнива  ее со стационарной температурой, определ- ют толщину .накипи.In order to eliminate this disadvantage, but the proposed method creates a short pulse of electric current on the surface of the container, increases the temperature of the surface caused by it and, comparing it with the stationary temperature, determines the thickness of the scum.

Предлагаемый способ заключаетс  в следующем .The proposed method is as follows.

На поверхность емкости на участке 5- 10 мм подают имлульс электрического тока.On the surface of the vessel in the area of 5-10 mm serves the impulse of electric current.

например, разр дом конденсатора через присоединенные к повер,хност1и проводники.for example, by discharging a capacitor through conductors connected to the turner.

Прохождение разр дного тока через стенку емкости вызывает кратковременное возрастание ее температ;)фы на этом участке, которое измер ют размещенной на наружной поверхности термопарой.The passage of the discharge current through the wall of the container causes a short-term increase in its temperature;) in this area, which is measured by a thermocouple placed on the outer surface.

По разности Между макси.мальным значением температуры в импульсе и стационарной температурой стенки производ т определение толщины накипи по предварительно сн тым тарированным зависи.мост .м за1мер емой разности температур от термического сопротивлени  накипи.According to the difference Between the maximum value of the temperature in the pulse and the stationary temperature of the wall, the thickness of the scale is determined by the preliminarily measured calibrated dependencies of the measured temperature difference on the thermal resistance of scale.

П р е д .м е т и з о б р е т е и и   Способ определени  толщ.ины накинк ;iaMethod of determining the thickness of the Nakinks; ia

внутренних поверхност х емкостей, заключ.эющийс  в том, что замер ют стационарную температуру поверхности емкости, отличающийс  тем, ЧТО, с целью повыщени  точности, создают кр атковременный импульс электрического тока на поверхности емкости, замер ют вызванное им возрастание температуры поверхности и, сравнива  ее со стационарной температурой, определ ют толщину накипи.internal surfaces of the containers, which means that they measure the stationary temperature of the surface of the vessel, which is different from THAT, in order to increase accuracy, create a short time pulse of electric current on the surface of the vessel, measure the increase in surface temperature caused by it and, comparing it with a stationary temperature, determine the thickness of the scale.

SU1701469A 1971-09-20 1971-09-20 METHOD FOR DETERMINING SKILL THICKNESS ON THE INTERNAL SURFACES OF CAPACITIES SU406109A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1701469A SU406109A1 (en) 1971-09-20 1971-09-20 METHOD FOR DETERMINING SKILL THICKNESS ON THE INTERNAL SURFACES OF CAPACITIES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1701469A SU406109A1 (en) 1971-09-20 1971-09-20 METHOD FOR DETERMINING SKILL THICKNESS ON THE INTERNAL SURFACES OF CAPACITIES

Publications (1)

Publication Number Publication Date
SU406109A1 true SU406109A1 (en) 1973-11-05

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Application Number Title Priority Date Filing Date
SU1701469A SU406109A1 (en) 1971-09-20 1971-09-20 METHOD FOR DETERMINING SKILL THICKNESS ON THE INTERNAL SURFACES OF CAPACITIES

Country Status (1)

Country Link
SU (1) SU406109A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2487343C1 (en) * 2012-03-01 2013-07-10 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВПО "НИУ МЭИ") Determination of deposition thickness at inner side of pipes by eddy current method and device for its implementation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2487343C1 (en) * 2012-03-01 2013-07-10 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВПО "НИУ МЭИ") Determination of deposition thickness at inner side of pipes by eddy current method and device for its implementation

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