SU964333A1

SU964333A1 - Method of monitoring slugging properties of fuel ash

Info

Publication number: SU964333A1
Application number: SU813259364A
Authority: SU
Inventors: Александр Николаевич Алехнович; Владимир Викторович Богомолов; Владимир Васильевич Алферьев
Priority date: 1981-03-11
Filing date: 1981-03-11
Publication date: 1982-10-07

Description

Изобретение относится к контрольноизмерительной технике и может быть применено для контроля за работой котлов, а именно за шлакованием поверхностей нагрева.The invention relates to measuring technique and can be used to control the operation of boilers, namely, the slagging of heating surfaces.

Известен способ контроля шлакующих свойств золы топлива в парогенераторе путем измерения количества отложений на рабочем элементе подвижного зонда, размещенном в потоке дымовых газов [1]< Недостатком этого способа является невозможность одновременного контроля прочностных свойств отложений.A known method of controlling the slagging properties of fuel ash in a steam generator by measuring the amount of deposits on the working element of a movable probe placed in a flue gas stream [1] <The disadvantage of this method is the inability to simultaneously control the strength properties of deposits.

Цель изобретения - одновременный контроль прочностных свойств отложений.The purpose of the invention is the simultaneous control of the strength properties of deposits.

Поставленная цель достигается тем, что рабочему элементу зонда сообщают вынужденные колебания с постоянными частотой и амплитудой.The goal is achieved in that the working element of the probe is informed by forced oscillations with constant frequency and amplitude.

На чертеже представлена схема устройства индикатора шлакования, реализующего способ.The drawing shows a diagram of a slag indicator device that implements the method.

Индикатор шлакования содержит зонд 1 в виде водоохлаждаемой штанги с установленной вокруг нее на части погруженной в газоходе неохлажденной обечайкой’. Зонд подвижно закреплен в опо⁵ ре 2, дополнительно опирается на пружинную опору 3 и снабжен контргрузом 4. На части зонда, расположенной вне газохода котла, установлен сигнализатор 5 положения, подсоединенный к вто⁰ ричному прибору 6. На зонде установлен вибратор 7. В другом варианте вместо вибратора 7 может быть установлен генератор знакопеременной нагрузки _J5 (импульсная камера).The slagging indicator comprises a probe 1 in the form of a water-cooled rod with an un-cooled shell “immersed in the duct” installed around it on a part. The probe is mounted movably in the GCO ⁵ in D 2, further relies on the spring support 3 and provided with a counterweight 4. On the portion of the probe, located outside the gas flue of the boiler, set switch positions 5 connected to Auto ⁰ ary device 6. At vibrator probe set 7. In another instead of vibrator 7, an alternating load generator _J5 (pulse chamber) can be installed.

Контроль шлакующих свойств золы топлива и шлакования поверхностей нагрева по данному способу осуществляется следующим образом. _f ²⁰ Зонду 1 с постоянными во времени амплитудой и частотой сообщают вынужденные колебания с помощью вибратора 1. В результате в отложениях, образу4 вторичного прибора сигнализатора положения.The control of the slagging properties of fuel ash and slagging of heating surfaces by this method is as follows. _f ²⁰ Probe 1 with a constant amplitude and frequency in time is reported by forced vibrations with the help of vibrator 1. As a result, in deposits, form 4 of the secondary device of the position indicator.

Таким образом, предлагаемый способ позволяет вести одновременно непрерывный контроль за прочностными свойствами отложений.Thus, the proposed method allows simultaneous continuous monitoring of the strength properties of deposits.

Claims

CS) METHOD FOR MONITORING SLAPTING PROPERTIES The invention relates to measuring instrumentation and can be used to control the operation of boilers, namely, the slagging of heating surfaces. The known method of controlling the slagging properties of fuel ash in a steam generator by measuring the amount of deposits on the working element of the movable probe placed in the flue gas stream. The disadvantage of this method is the impossibility of simultaneously controlling the strength properties of the deposits. The purpose of the invention is the simultaneous control of the strength properties of deposits. The goal is achieved by the fact that the working element of the probe is reported to have forced oscillations with a constant frequency and amplitude. The drawing shows a diagram of a slag indicator device implementing a method. ZOSH OF FUELS The slag indicator contains a probe 1 in the form of a water-cooled rod with Bokpyr installed on the part of a non-cooled shell immersed in a gas duct. The probe is movably mounted in support 2, additionally supported by spring support 3 and provided with a counterweight. On the part of the probe located outside the boiler flue there is a position indicator 5 connected to the secondary device 6. A vibrator 7 is installed on the probe. In another embodiment, an alternating load generator (pulse chamber) can be installed instead of the vibrator 7. The control of the slagging properties of the ash of fuel and the attacking of the heating surfaces through the yes} "4th method is carried out as follows. A probe 1 with a constant in amplitude and frequency is reported to be forced to oscillate with the aid of a 7 ° vibrator. As a result, the sediments formed on the working element of the probe generate forces equal to the product of the mass of ash to accelerate its movement. While the stresses that appear in the sediments are less destructive, the size and mass of the sediments increase. A secondary device with a position indicator measures the movement of the probe due to the change in its mass during slagging. When the critical size (mass) of the deposits is reached, they are destroyed by the action of inertial forces and gravity, the probe returns to its original position by means of a spring support, which fixes the position indicator. The greater the strength of the sediments and the strength of their adhesion with the probe, the greater the size (mass) will be their destruction, all other conditions being equal, i.e., with an increase in the strength of the sediments, their destruction will occur with a greater displacement of the probe fixed at bluer high values of the secondary position indicator device. Thus, the proposed method allows simultaneous continuous monitoring of the sediment strength properties. DETAILED DESCRIPTION A method for monitoring the slagging properties of fuel ash by measuring the amount at a working element of a movable probe placed in a flue gas stream is different. That, in order to simultaneously control the strength properties of the deposits, the working element of the probe is reported to be forced to oscillate at a constant frequency and amplitude. Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2852364 / 2D-06, cl. F 22 IN HALL 2, 1979.