CN105334294A - Device and method for measuring descaling efficiency of boiler - Google Patents
Device and method for measuring descaling efficiency of boiler Download PDFInfo
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- CN105334294A CN105334294A CN201510814139.4A CN201510814139A CN105334294A CN 105334294 A CN105334294 A CN 105334294A CN 201510814139 A CN201510814139 A CN 201510814139A CN 105334294 A CN105334294 A CN 105334294A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims description 16
- 230000035939 shock Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 6
- 239000012736 aqueous medium Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 239000002184 metal Substances 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000016507 interphase Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006854 communication Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- Food Science & Technology (AREA)
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a device and a method for measuring descaling efficiency of a boiler. The descaling efficiency of equipment such as the boiler, a heat exchanger and the like during industrial production can be tested, a high-voltage pulse power supply applies voltage to electrodes of a left discharge reactor and a right discharge reactor, discharge plasma channels are formed in water, and pressure in the channels are rapidly increased and expanded at a very high speed. Due to incompressibility of the water, strong pressure impact waves are formed, and a strong force effect is produced for dirt; due to different deformation of the dirt and a metal wall under the pressure, the dirt falls off from the metal wall, and the descaling purpose is achieved. The measurement device has good stability and the measurement pressure accuracy is high.
Description
Technical field
The present invention relates to field of measuring technique, is a kind of measurement mechanism and method thereof of clean the boiler usefulness.
Background technology
Heat-exchange apparatus (comprising boiler) the ubiquity scale problems used in the industrial production.Due to fouling, these heat-exchange apparatus are made to have to must carry out clearing up, changing after use some cycles.Current descaling method mainly contains chemical corrosion method, mechanical processing method and hydrojet method etc.For dirt denser, pipeline is longer or bending, and the method descale effect of these routines is all not good enough, and cost is higher.Therefore scale problems is solved in the urgent need to seeking a kind of effective ways.
The present invention's application electrohydraulic effect mechanism, because electrohydraulic effect produces enormous power effect, damaging around dirt, is that Burning in Effect of Sound Energy is in the fouling body of Boiler Metallic Wall electric energy conversion, fouling is allowed to depart from metallic walls under the effect of shock wave, to reach scale removal object.Dirt in Boiler Metallic Wall is attached in metallic walls by stronger adhesion.Because metal is different from the elastic modulus of dirt, vibration frequency is different, and acoustic impedance is different, shock wave is propagated in metallic walls with dirt and produces different mechanics effects.Dirt is caused to split away off from metallic walls.Have no so far about the patent documentation identical with method with structure of the present invention and practical application.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of structure simple, applicable, can measure clean the boiler ability, and measure the measurement mechanism of clean the boiler usefulness accurately, and provide its measuring method.
The technical scheme solving the employing of its technical matters is: a kind of measurement mechanism of clean the boiler usefulness, it is characterized in that, it comprises: high-voltage pulse power source, controller, oscillograph, detectoscope, audiphone probe, discharge reactor, left sparking electrode, right sparking electrode, high voltage probe, current measurer, splendid attire water in discharge reactor, described controller is connected with the input end of high-voltage pulse power source, transfer control signal; First output terminal of described high-voltage pulse power source is connected with the left sparking electrode of discharge reactor, second output terminal of described high-voltage pulse power source is connected with the right sparking electrode of discharge reactor, discharge reactor is connected to the ground and connects, described oscillograph first input end and detectoscope, the audiphone being placed in discharge reactor water are popped one's head in and are connected, transmission of pressure signal, described oscillographic second input end is connected with the second output terminal of high voltage probe, high-voltage pulse power source, transfer overvoltage signal; Described oscillographic 3rd input end is connected with the first output terminal of current measurer, high-voltage pulse power source, delivered current signal.
A measuring method for clean the boiler usefulness, is characterized in that, uses the measurement mechanism of described clean the boiler usefulness, make the pulse of high-voltage pulse power source output cathode, the pulse voltage applied arrives on the left and right sparking electrode of reactor, and the water between through two sparking electrodes, finally enter ground; Oscillograph recording is the withstand voltage waveform of sparking electrode and current waveform now, owing to inputting larger electric energy within the extremely short time, guiding discharge passage sharply expands, and aqueous medium is around almost incompressible, thus form strong shock wave outwards to propagate, oscillograph is by detectoscope record pressure; When measuring clean the boiler, audiphone probe is replaced with the Boiler Metallic Wall model of band fouling, be placed on position identical in water, realize measuring scale removal ability, the spacing of setting detectoscope and left and right sparking electrode is required value, increase the applied voltage that high-voltage pulse power source exports, measure pressure magnitude in water, same method, the applied voltage that setting high-voltage pulse power source exports is required value, increase detectoscope and left and right sparking electrode, in the distance of height and position, measure pressure magnitude in water; The spacing of setting detectoscope and left and right sparking electrode is required value, and the applied voltage simultaneously setting high-voltage pulse power source output is required value, increases electrical conductivity of water, measures pressure magnitude in water.
The invention has the beneficial effects as follows:
1. regulate left and right sparking electrode anode-cathode distance, can realize regulating the voltage breakdown amplitude between sparking electrode;
2. regulate the distance of detectoscope and left and right sparking electrode height and position, the decay of measuring pressure and communication process in water can be realized;
3. regulate electrical conductivity of water, can realize regulating pressure magnitude in water;
4. have technique simple, easy to operate, owing to carrying out in deep water, noise is little, does not have dust, and measurement is accurate, precision is high;
5., because shock wave relies on aqueous medium to propagate, therefore scale removal is not subject to the impact of metal construction and shape, and this is for U-tube, the dirt removal successful of the complex pipes such as spiral type pipe.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described with concrete enforcement
Fig. 1 is the measurement mechanism schematic diagram of a kind of clean the boiler usefulness of the present invention;
Fig. 2 is metallic walls scale removal mechanical model schematic diagram.
In figure, 1 high-voltage pulse power source, 2 controllers, 3 oscillographs, 4 detectoscopes, 5 audiphone probes, 6 discharge reactors, 7 sparking electrodes, 8 high voltage probe, 9 current measurers, 10 dirts, 11 metallic walls.AB is the interphase of water and dirt, and CD is the interphase of metallic walls and dirt, and EF is the interphase of metallic walls and air.
Embodiment
With reference to Fig. 1, the measurement mechanism of a kind of clean the boiler usefulness of the present invention, comprising: 1 high-voltage pulse power source, 2 controllers, 3 oscillographs, 4 detectoscopes, 5 audiphone probes, 6 discharge reactors, 7 sparking electrodes, 8 high voltage probe, 9 current measurers, splendid attire water in discharge reactor 6.Described controller 2 is connected with the input end of high-voltage pulse power source 1, transfer control signal; First output terminal of described high-voltage pulse power source 1 is connected with the left sparking electrode 16 of discharge reactor 6, second output terminal of described high-voltage pulse power source 1 is connected with the right sparking electrode 7 of discharge reactor 6, discharge reactor 6 is connected to the ground and connects, left sparking electrode 16 and right sparking electrode 7 are stainless steel material, column type diameter is 0.9mm, two die openings
From being 0.2-0.4mm; Described oscillograph 3 first input end and detectoscope 4, the audiphone being placed in discharge reactor 6 water are popped one's head in and 5 to be connected, transmission of pressure signal, the upper plane that the audiphone probe 5 being placed in discharge reactor 6 water is formed apart from left sparking electrode 16 and right sparking electrode 7 at height and position is 8-10mm.Second input end of described oscillograph 3 is connected with the second output terminal of high voltage probe 8, high-voltage pulse power source 1, transfer overvoltage signal; 3rd input end of described oscillograph 3 is connected with the first output terminal of current measurer 9, high-voltage pulse power source 1, delivered current signal.Dirt in Boiler Metallic Wall is attached in metallic walls 11 by stronger adhesion.Because metal is different from the elastic modulus of dirt 10, vibration frequency is different, and acoustic impedance is different, shock wave is propagated in metallic walls 11 with dirt 10 and produces different mechanics effects.When the left sparking electrode 16 opposed in gap, right sparking electrode 7 discharge suddenly, just have the pressure wave of a moment to pass to AB interface, as shown in Figure 2, the acoustic impedance due to water is less than the acoustic impedance of dirt 10, and dirt 10 is compressed the effect of ripple.But when the reflection wave reflected from metallic walls 11 arrives AB interphase again through schmutzband, occur wave reflection, this reflection wave is stretching ripple, dirt 10 be subject to simultaneously stretching ripple and effect.Drawing stress is the stress of ripple and ripple synthesis, and under certain discharge parameter, when the stress synthesized is greater than the tensile strength of dirt 10, dirt is outer just to come off.
The measuring method of a kind of clean the boiler usefulness of the present invention, use the measurement mechanism of described clean the boiler usefulness, make the pulse of high-voltage pulse power source output cathode, the pulse voltage of applying arrives on the left and right sparking electrode of reactor, and the water between through two sparking electrodes, finally enter ground; Oscillograph recording is the withstand voltage waveform of sparking electrode and current waveform now, owing to inputting larger electric energy within the extremely short time, guiding discharge passage sharply expands, and aqueous medium is around almost incompressible, thus form strong shock wave outwards to propagate, oscillograph is by detectoscope record pressure; When measuring clean the boiler, audiphone probe is replaced with the Boiler Metallic Wall model of band fouling, be placed on position identical in water, realize measuring scale removal ability, the spacing of setting detectoscope and left and right sparking electrode is required value, increase the applied voltage that high-voltage pulse power source exports, measure pressure magnitude in water, same method, the applied voltage that setting high-voltage pulse power source exports is required value, increase detectoscope and left and right sparking electrode, in the distance of height and position, measure pressure magnitude in water; The spacing of setting detectoscope and left and right sparking electrode is required value, and the applied voltage simultaneously setting high-voltage pulse power source output is required value, increases electrical conductivity of water, measures pressure magnitude in water.
Measure the step of clean the boiler usefulness
1. adjustment control, makes the applied voltage of the pulse power reach required value;
2. regulate left and right sparking electrode anode-cathode distance, make it to reach required value; Regulate hydrophone and left and right sparking electrode to be positioned at the distance of short transverse, make it to reach required value, regulate electrical conductivity of water, make it to reach required value;
3. start high-voltage pulse power source; High voltage probe, current measurer be recording voltage waveform, current waveform respectively; Hydrophone record pressure waveform simultaneously;
The metallic walls model of boiler is replaced hydrophone, places same position, repeat 3 step operations, reach descale effect.
Claims (2)
1. the measurement mechanism of a clean the boiler usefulness, it is characterized in that, it comprises: high-voltage pulse power source, controller, oscillograph, detectoscope, audiphone probe, discharge reactor, left sparking electrode, right sparking electrode, high voltage probe, current measurer, splendid attire water in discharge reactor, described controller is connected with the input end of high-voltage pulse power source, transfer control signal; First output terminal of described high-voltage pulse power source is connected with the left sparking electrode of discharge reactor, second output terminal of described high-voltage pulse power source is connected with the right sparking electrode of discharge reactor, discharge reactor is connected to the ground and connects, described oscillograph first input end and detectoscope, the audiphone being placed in discharge reactor water are popped one's head in and are connected, transmission of pressure signal, described oscillographic second input end is connected with the second output terminal of high voltage probe, high-voltage pulse power source, transfer overvoltage signal; Described oscillographic 3rd input end is connected with the first output terminal of current measurer, high-voltage pulse power source, delivered current signal.
2. a measuring method for clean the boiler usefulness, is characterized in that, uses the measurement mechanism of described clean the boiler usefulness, make the pulse of high-voltage pulse power source output cathode, the pulse voltage applied arrives on the left and right sparking electrode of reactor, and the water between through two sparking electrodes, finally enter ground; Oscillograph recording is the withstand voltage waveform of sparking electrode and current waveform now, owing to inputting larger electric energy within the extremely short time, guiding discharge passage sharply expands, and aqueous medium is around almost incompressible, thus form strong shock wave outwards to propagate, oscillograph is by detectoscope record pressure; When measuring clean the boiler, audiphone probe is replaced with the Boiler Metallic Wall model of band fouling, be placed on position identical in water, realize measuring scale removal ability, the spacing of setting detectoscope and left and right sparking electrode is required value, increase the applied voltage that high-voltage pulse power source exports, measure pressure magnitude in water, same method, the applied voltage that setting high-voltage pulse power source exports is required value, increase detectoscope and left and right sparking electrode, in the distance of height and position, measure pressure magnitude in water; The spacing of setting detectoscope and left and right sparking electrode is required value, and the applied voltage simultaneously setting high-voltage pulse power source output is required value, increases electrical conductivity of water, measures pressure magnitude in water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814139.4A CN105334294B (en) | 2015-11-23 | 2015-11-23 | Device and method for measuring descaling efficiency of boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510814139.4A CN105334294B (en) | 2015-11-23 | 2015-11-23 | Device and method for measuring descaling efficiency of boiler |
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| CN105334294A true CN105334294A (en) | 2016-02-17 |
| CN105334294B CN105334294B (en) | 2017-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110179338A (en) * | 2019-06-21 | 2019-08-30 | 珠海三威注塑模具有限公司 | A kind of instant heating type drinking machine and its method of controlling security |
| CN112067498A (en) * | 2020-07-25 | 2020-12-11 | 东北电力大学 | Discharge in water H2O2Particle space-time density distribution measuring device and measuring method thereof |
Citations (7)
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| US4541848A (en) * | 1981-09-12 | 1985-09-17 | Senichi Masuda | Pulse power supply for generating extremely short pulse high voltages |
| CN2621839Y (en) * | 2003-06-09 | 2004-06-30 | 苏平 | Intelligent strong power radio-frequency dirt proof and cleaning generator |
| CN201314219Y (en) * | 2008-09-02 | 2009-09-23 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Liquid-electric effect flushing contaminant releasing device |
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-
2015
- 2015-11-23 CN CN201510814139.4A patent/CN105334294B/en not_active Expired - Fee Related
Patent Citations (7)
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| JP4512721B2 (en) * | 2000-09-22 | 2010-07-28 | 本多電子株式会社 | Oscillation control circuit of multi-frequency ultrasonic cleaner |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110179338A (en) * | 2019-06-21 | 2019-08-30 | 珠海三威注塑模具有限公司 | A kind of instant heating type drinking machine and its method of controlling security |
| CN110179338B (en) * | 2019-06-21 | 2024-02-23 | 珠海三威注塑模具有限公司 | Instant heating type water dispenser and safety control method thereof |
| CN112067498A (en) * | 2020-07-25 | 2020-12-11 | 东北电力大学 | Discharge in water H2O2Particle space-time density distribution measuring device and measuring method thereof |
| CN112067498B (en) * | 2020-07-25 | 2024-02-13 | 东北电力大学 | In-water discharge H 2 O 2 Particle space-time density distribution measuring device and measuring method thereof |
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| CN105334294B (en) | 2017-03-22 |
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