CN105334294B - Device and method for measuring descaling efficiency of boiler - Google Patents
Device and method for measuring descaling efficiency of boiler Download PDFInfo
- Publication number
- CN105334294B CN105334294B CN201510814139.4A CN201510814139A CN105334294B CN 105334294 B CN105334294 B CN 105334294B CN 201510814139 A CN201510814139 A CN 201510814139A CN 105334294 B CN105334294 B CN 105334294B
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- water
- power source
- sparking electrode
- pulse power
- voltage
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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
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 apparatus of clean the boiler efficiency and its method.
Background technology
Heat-exchange apparatus (including boiler) the generally existing scale problems for using in the industrial production.Due to fouling so that
These heat-exchange apparatus are had to be carried out clearing up after using some cycles, are changed.Main the having of current descaling method
Learn etch, mechanical processing method and water-jet method etc..For dirt denser, pipeline is longer or bending, these routines
Method scale removal effect it is all not good enough and relatively costly.Therefore in the urgent need to seeking a kind of effective ways solving scale problems.
The present invention applies electrohydraulic effect mechanism, as electrohydraulic effect produces huge stress effect, dirt around is damaged,
Electric energy is converted into Burning in Effect of Sound Energy in the fouling body of Boiler Metallic Wall, allows fouling to depart from metallic walls in the presence of shock wave,
To reach scale removal purpose.Dirt in Boiler Metallic Wall is attached in metallic walls by stronger adhesion.Due to metal and dirt
Elastic modelling quantity is different, and frequency of vibration is different, and acoustic impedance is different so that it is different that shock wave propagates generation in metallic walls with dirt
Mechanics effect.Dirt is caused to split away off from metallic walls.Have no so far about with present configuration and method identical patent
Document and practical application.
The content of the invention
The technical problem to be solved is：A kind of simple structure is provided, is suitable for, clean the boiler energy can be measured
Power, and the measurement apparatus of accurate clean the boiler efficiency are measured, and its measuring method is provided.
Solving the technical scheme that its technical problem adopts is：A kind of measurement apparatus of clean the boiler efficiency, is characterized in that, it
Including：High-voltage pulse power source, controller, oscillograph, detectoscope, listening gear probe, discharge reactor, left sparking electrode,
Right sparking electrode, high voltage probe, current measurer, contain water, described controller and high-voltage pulse in discharge reactor
The input of power supply is connected, and transmits control signal；First outfan of described high-voltage pulse power source and discharge reactor
Left sparking electrode is connected, and described the second outfan of high-voltage pulse power source is connected with the right sparking electrode of discharge reactor
Connect, discharge reactor is connected to the ground, described oscillograph first input end and detectoscope, be placed in discharge reactor water
Listening gear probe be connected, transmit pressure signal, described oscillographic second input and high voltage probe, high-voltage pulse
Second outfan of power supply is connected, transfer overvoltage signal；Described oscillographic 3rd input and current measurer, high pressure
First outfan of the pulse power is connected, and transmits current signal.
A kind of measuring method of clean the boiler efficiency, is characterized in that, using the measurement apparatus of described clean the boiler efficiency,
The pulse voltage of high-voltage pulse power source output cathode pulse, applying is made to reach on the left and right sparking electrode of reactor, and insertion
Water between two sparking electrodes, finally enters ground；The withstanding voltage waveform and current waveform of oscillograph recording now sparking electrode, by
In larger electric energy is input within the extremely short time, guiding discharge passage drastically expands, and the aqueous medium of surrounding almost can not
Compression, thus form strong shock wave and outwards propagate, oscillograph records pressure by detectoscope；Measurement boiler is removed
When dirty, replace with the Boiler Metallic Wall model with fouling listening gear to pop one's head in, be placed on identical position in water, realize measurement scale removal
Ability, sets distance between detectoscope and left and right sparking electrode and, as required value, increases outer the applying of high-voltage pulse power source output
Voltage, pressure magnitude in measurement water, same method set the applied voltage of high-voltage pulse power source output as required value, increase water
Middle listening gear measures pressure magnitude in water with left and right sparking electrode in the distance of height and position；Setting detectoscope with it is left,
Between right sparking electrode, distance is required value, and the applied voltage for concurrently setting high-voltage pulse power source output is required value, increases water
Electrical conductivity, measurement water in pressure magnitude.
The invention has the beneficial effects as follows：
1. left and right sparking electrode anode-cathode distance is adjusted, is capable of achieving to adjust the breakdown voltage amplitude between sparking electrode；
2. the distance of detectoscope and left and right sparking electrode height and position is adjusted, pressure and biography in measurement water is capable of achieving
Broadcast the decay of process；
3. electrical conductivity of water is adjusted, is capable of achieving to adjust pressure magnitude in water；
4. there is process is simple, easy to operate, due to carrying out in deep water, noise is little, no dust, and measure accurately,
High precision；
5. as shock wave is propagated by aqueous medium, therefore scale removal is not affected by metal structure and shape, and this is for U-shaped
The dirt removal effect of the complex pipes such as pipe, spiral type pipe is obvious.
Description of the drawings
Below in conjunction with the accompanying drawings and it is embodied as that the present invention will be further described
Fig. 1 is a kind of measurement apparatus schematic diagram of clean the boiler efficiency 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 listening gears probe, 6 exoelectrical reactions
Device, 7 right sparking electrodes, 8 high voltage probes, 9 current measurers, 10 dirts, 11 metallic walls, 16 left sparking electrodes, AB be water and
The separating surface of dirt, CD are the separating surfaces of metallic walls and dirt, and EF is the separating surface of metallic walls and air.
Specific embodiment
Reference Fig. 1, a kind of measurement apparatus of clean the boiler efficiency of the present invention, including：High-voltage pulse power source 1, controller
2, oscillograph 3, detectoscope 4, listening gear probe 5, discharge reactor 6, right sparking electrode 7, high voltage probe 8, electric current are surveyed
Measuring device 9, contains water in discharge reactor 6.Described controller 2 is connected with the input of high-voltage pulse power source 1, transmission control
Signal processed；First outfan of described high-voltage pulse power source 1 is connected with the left sparking electrode 16 of discharge reactor 6, described
The second outfan of high-voltage pulse power source 1 be connected with the right sparking electrode 7 of discharge reactor 6, discharge reactor 6 and ground phase
Connection, left sparking electrode 16 and right sparking electrode 7 are stainless steel material, a diameter of 0.9 mm of column type, two die openings
From for 0.2-0.4mm；Described 3 first input end of oscillograph and detectoscope 4, it is placed in 6 water of discharge reactor
In listening gear probe 5 be connected, transmit pressure signal, the listening gear probe 5 being placed in 6 water of discharge reactor is in height and position
The upper plane constituted apart from left sparking electrode 16 and right sparking electrode 7 is 8-10mm.Second input of described oscillograph 3 with
High voltage probe 8, the second outfan of high-voltage pulse power source 1 are connected, transfer overvoltage signal；The 3rd of described oscillograph 3
Input is connected with the first outfan of current measurer 9, high-voltage pulse power source 1, transmits current signal.In Boiler Metallic Wall
Dirt be attached in metallic walls 11 by stronger adhesion.As metal is different from the elastic modelling quantity of dirt 10, frequency of vibration is not
Together, acoustic impedance is different so that shock wave propagates the different mechanics effect of generation in metallic walls 11 with dirt 10.When in gap pair
The left sparking electrode 16 put, right sparking electrode 7 discharge suddenly, just have the pressure wave of a moment to pass to AB interfaces, such as Fig. 2 institutes
Show, as the acoustic impedance of water is less than the acoustic impedance of dirt 10, dirt 10 is acted on by compressional wave.But work as and reflect from metallic walls 11
When the echo Jing schmutzbands returned reach AB separating surfaces again, there is the reflection of ripple, the echo is tensile wave, and dirt 10 is same
When be stretched the effect of ripple sum.Tensile stress is the stress that ripple and ripple synthesize, under certain discharge parameter, when the stress of synthesis
More than dirt 10 tensile strength when, dirt outer layer just falls off.
A kind of measuring method of the clean the boiler efficiency of the present invention, using the measurement apparatus of described clean the boiler efficiency,
The pulse voltage of high-voltage pulse power source output cathode pulse, applying is made to reach on the left and right sparking electrode of reactor, and insertion
Water between two sparking electrodes, finally enters ground；The withstanding voltage waveform and current waveform of oscillograph recording now sparking electrode, by
In larger electric energy is input within the extremely short time, guiding discharge passage drastically expands, and the aqueous medium of surrounding almost can not
Compression, thus form strong shock wave and outwards propagate, oscillograph records pressure by detectoscope；Measurement boiler is removed
When dirty, replace with the Boiler Metallic Wall model with fouling listening gear to pop one's head in, be placed on identical position in water, realize measurement scale removal
Ability, sets distance between detectoscope and left and right sparking electrode and, as required value, increases outer the applying of high-voltage pulse power source output
Voltage, pressure magnitude in measurement water, same method set the applied voltage of high-voltage pulse power source output as required value, increase water
Middle listening gear measures pressure magnitude in water with left and right sparking electrode in the distance of height and position；Setting detectoscope with it is left,
Between right sparking electrode, distance is required value, and the applied voltage for concurrently setting high-voltage pulse power source output is required value, increases water
Electrical conductivity, measurement water in pressure magnitude.
The step of measurement clean the boiler efficiency
1. controller is adjusted, makes the applied voltage of the pulse power reach required value；
2. left and right sparking electrode anode-cathode distance is adjusted, required value is made up to；Adjust hydrophone and left and right electric discharge
Electrode is located at the distance of short transverse, makes up to required value, adjusts electrical conductivity of water, makes up to required value；
3. high-voltage pulse power source is started；High voltage probe, current measurer difference recording voltage waveform, current waveform；Together
When hydrophone record pressure waveform；
The metallic walls model of boiler is replaced into hydrophone, same position is placed, is repeated 3 step operations, is reached scale removal
Effect.
Claims (2)
1. a kind of measurement apparatus of clean the boiler efficiency, is characterized in that, it includes：High-voltage pulse power source, controller, oscillograph,
Detectoscope, listening gear probe, discharge reactor, left sparking electrode, right sparking electrode, high voltage probe, current measurer,
Water is contained in discharge reactor, described controller is connected with the input of high-voltage pulse power source, transmit control signal；Institute
First outfan of the high-voltage pulse power source stated is connected with the left sparking electrode of discharge reactor, described high-voltage pulse power source
The second outfan be connected with the right sparking electrode of discharge reactor, discharge reactor is connected to the ground, described oscillograph
First input end is connected with detectoscope, the listening gear being placed in discharge reactor water probe, transmits pressure signal, described
Oscillographic second input be connected with the second outfan of high voltage probe, high-voltage pulse power source, transfer overvoltage signal；
Described oscillographic 3rd input is connected with the first outfan of current measurer, high-voltage pulse power source, transmits electric current
Signal.
2. a kind of measuring method of clean the boiler efficiency, is characterized in that, it include in have：Using the survey of clean the boiler efficiency
Amount device, makes high-voltage pulse power source output cathode pulse, the pulse voltage of applying reach the left and right sparking electrode of reactor
On, and the water between two sparking electrode of insertion, finally enter ground；The withstanding voltage waveform and electricity of oscillograph recording now sparking electrode
Stream waveform, due to being input into larger electric energy within the extremely short time, guiding discharge passage drastically expands, and the aqueous medium of surrounding is several
It is incompressible, thus forms strong shock wave and outwards propagate, oscillograph records pressure by detectoscope；Survey
During amount clean the boiler, replace with the Boiler Metallic Wall model with fouling listening gear to pop one's head in, be placed on identical position in water, realize
Measurement scale removal ability, as required value, increase high-voltage pulse power source is defeated to set distance between detectoscope and left and right sparking electrode
The applied voltage for going out, pressure magnitude in measurement water, same method set the applied voltage of high-voltage pulse power source output as requiring
Value, increases detectoscope with left and right sparking electrode in the distance of height and position, measures pressure magnitude in water；Setting water is pleasant to the ear
Between sound device and left and right sparking electrode, distance is required value, concurrently sets the applied voltage of high-voltage pulse power source output for requiring
Value, increases electrical conductivity of water, pressure magnitude in measurement 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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| Publication Number | Publication Date |
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| CN105334294A CN105334294A (en) | 2016-02-17 |
| CN105334294B true CN105334294B (en) | 2017-03-22 |
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| CN201510814139.4A Expired - Fee Related CN105334294B (en) | 2015-11-23 | 2015-11-23 | Device and method for measuring descaling efficiency of boiler |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
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 |
| JP4512721B2 (en) * | 2000-09-22 | 2010-07-28 | 本多電子株式会社 | Oscillation control circuit of multi-frequency ultrasonic cleaner |
| CN103394485A (en) * | 2013-08-02 | 2013-11-20 | 魏波 | Ultrasonic scale preventing and descaling device of C-class anti-explosion double-power module |
| CN103752558A (en) * | 2013-12-10 | 2014-04-30 | 大连春光科技发展有限公司 | High-power high-voltage electric pulse strong magnetic discharge descaling device |
| CN205175989U (en) * | 2015-11-23 | 2016-04-20 | 东北电力大学 | Measurement device for boiler scale removal efficiency |
-
2015
- 2015-11-23 CN CN201510814139.4A patent/CN105334294B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4541848A (en) * | 1981-09-12 | 1985-09-17 | Senichi Masuda | Pulse power supply for generating extremely short pulse high voltages |
| JP4512721B2 (en) * | 2000-09-22 | 2010-07-28 | 本多電子株式会社 | Oscillation control circuit of multi-frequency ultrasonic cleaner |
| 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 |
| CN103394485A (en) * | 2013-08-02 | 2013-11-20 | 魏波 | Ultrasonic scale preventing and descaling device of C-class anti-explosion double-power module |
| CN103752558A (en) * | 2013-12-10 | 2014-04-30 | 大连春光科技发展有限公司 | High-power high-voltage electric pulse strong magnetic discharge descaling device |
| CN205175989U (en) * | 2015-11-23 | 2016-04-20 | 东北电力大学 | Measurement device for boiler scale removal efficiency |
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| U行管液电效应除垢效能的实验研究;曹永等;《北京理工大学学报》;20090831;第29卷;第83-第86页 * |
| 液电效应除垢机理分析与试验研究;邓琦林等;《大连理工大学学报》;19980331;第38卷(第2期);第207-第211页 * |
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