CN109520362A - Shear elastic wave passivation on line scaler system and antiscaling, descaling method - Google Patents
Shear elastic wave passivation on line scaler system and antiscaling, descaling method Download PDFInfo
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- CN109520362A CN109520362A CN201811339860.2A CN201811339860A CN109520362A CN 109520362 A CN109520362 A CN 109520362A CN 201811339860 A CN201811339860 A CN 201811339860A CN 109520362 A CN109520362 A CN 109520362A
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- wave
- frequency
- descaling
- energy converter
- elastic wave
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/003—Control arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G7/00—Cleaning by vibration or pressure waves
Abstract
The invention discloses a kind of shear elastic wave passivation on line scaler systems, comprising: AC power source, current rectifying and wave filtering circuit, inverter circuit, DSP microprocessing systems, A/D conversion circuit, energy converter, harmonic wave sample circuit, A/D conversion circuit；Invention further provides the antiscaling, descaling methods of shear elastic wave passivation on line scaler system, DSP microprocessing systems are given by A/D conversion circuit, DSP microprocessing systems pass through signal calculation processing, it finds by all mode of oscillation Harmony response Frequency points of descaling equipment, control the excitation energy converter of the frequency F exchange electric pulse of inverter circuit output, make the shear elastic wave that maximal efficiency is obtained by descaling equipment, the effect of efficient scale removal.Descaling and antiscaling of the present invention is high-efficient, at low cost, pollutes small.
Description
Technical field
The invention belongs to descaling and antiscaling technical fields, and in particular to a kind of shear elastic wave passivation on line scaler system and anti-
Dirty descaling method.
Background technique
Heat transfer and mass transfer are the indispensable processes of process flow process, and heat exchanger is the necessary equipment for conducting heat, and is changed
Hot device is conducted heat by doing heat-transfer surface with thermally conductive excellent material.That layer that dirt is attached to heat exchange surface is solid
State or soft gunk, it exists usually in the form of mixture, the forming process of dirt be heat exchange surface from clean conditions to
The process covered by dirt, the process are widely present in industrial process stream.Dirt not only interferes heat transfer to increase fluid
Resistance when heat-transfer surface is flowed through, the serious normal operation for interfering equipment, and cause the huge waste and economic loss of the energy.
For a long time, chemical method Anti-fouling Technology is widely used, and quite effective to a certain extent.But simultaneously
Also some problems are exposed, for example add chemical agent in cooling water, will cause the pollution of receiving water body, increase solid waste
New pollutant, bacterium and algae can be also bred in proper temperature with generation；There are also the specific aim of chemicals and water body ratios
It is relatively strong, when water body changes, need to change in time dosage or dosing kind, treatment of dirt of the chemical method to industrial flow
Play the role of alleviation, such as only in order to keep the good state of recirculated water to need periodical blowdown, and supplement is a large amount of
New water.
Physical method descaling and antiscaling technology is come into being, principle be by technologies such as electric field, magnetic field, sound field, electrochemistry,
Apply certain energy to recirculated water, by promoting dirt to crystallize in water body or disintegrating dirt just in the initial period of formation
Come inhibit dirt formation, can online processing, do not generate chemical waste fluid.With slight anti-corrosion, molten dirt and sterilization algae removal effect.
The shortcomings that physical method descaling and antiscaling technology: treatment effect is related with water quality, unobvious for hard water effect, have failure to ask
Topic generates underdeposit corrosion sometimes, and application environment temperature has stringent limitation, cannot be used under phase changing environment, in addition to silt, biology
The soft dirt such as glutinous mud does not have scale removal effect yet.It is only used for the circulation water to water system of soft, it is impossible to be used in hardness height (such as sewage
Vapo(u)rization system) water system, even more incapability is the problems such as the scabbing of heat exchanger or pipeline, carbon distribution, dust stratification, stuck valve
Power.
The external short pulse ultrasonic for scale prevention and removal technology installed online: its working principle is that by being mounted on heat exchanger
External ultrasonic transducer generates a series of physical effect in power ultrasonic energy transmission to heat exchange wall surface,
In it is most important be shearing effect, due to power ultrasonic energy in a metal transmitting distance compared in air with decline in liquid
Reduce, which is a kind of passivation on line descalling technique of the former Soviet Union on Naval Boiler first.Since Naval Boiler is general
It is all steam boiler, the heat exchange tubular elastic of boiler is preferable, and boiler water is all treated, and scaling degree is not very serious, and
And fouling temperature is very high, but after the one layer thin dirt of generation, will crack under the pulse external force of very little, hot water, which enters, to be split
It generates steam blasting under the effect of high temperature tube wall after line to impact dirt, to realize good tartar preventing iron tartar effect.So
And in much more complicated than Scale Formation of Steam Boiler of the fouling condition of petrochemical industry heat exchanger, boiler fouling is typically inorganic
Salt crust, and the fouling of petrochemical industry heat exchanger is usually compound dirt, but also has certain toughness and viscosity, in addition
The phenomenon that heat-exchange temperature of heat exchanger is relatively low, does not have steam blasting, heat exchanger heat-exchanging tube wall also is relatively rough, these
Phenomenon all determines that the fouling processing difficulty of petrochemical industry heat exchanger is more much bigger than the scale of steam boiler.External is short
Pulse ultrasonic wave Anti-fouling Technology is to provide energy using capacitor charge and discharge technology for heat exchanger energy converter is driven to generate ultrasound
Wave energy, energy converter and heat exchanger closely connect will be in transfer of ultrasonic energy to heat exchange wall surface, and the wall surface that makes to exchange heat generates continuous
Very short pulse ripple, it is 2.5ms~5.0ms that ordinary circumstance, which is pulse working time, interpulse period 80ms~
100ms.Since effective work of ultrasonic energy is too short, effective power density is too low, makes the surface particle of heat exchange wall surface not
Continuous elliptic motion can be generated, i.e., cannot make to exchange heat wall surface be attached to that dirt generation above is good continuously mutually to cut
Shear force is that is, very small to the removing energy density and ability of dirt.
Summary of the invention
In view of the foregoing deficiencies of prior art, the object of the present invention is to provide a kind of shear elastic wave passivation on line to remove
Dirty system and antiscaling, descaling method, for overcoming scale removal low efficiency in the prior art, heat exchanger service life is short, at high cost, drop
The defects of low production efficiency, is readily incorporated secondary pollution, narrow application range.
To achieve the above object, the technical scheme is that
A kind of shear elastic wave passivation on line scaler system, comprising:
AC power source provides operating voltage for shear elastic wave passivation on line scaler system；
Current rectifying and wave filtering circuit, by AC process at direct current；
Inverter circuit；
Direct current is converted into the time span T that can change, frequency F, voltage V by DSP microprocessing systems, control inverter circuit
Electric impulse signal, the electric signal of processing A/D conversion circuit conveying are exchanged, harmonic responding analysis is found and set by scale removal by descaling equipment
Standby all mode of oscillation Harmony response Frequency points control the exchange electric pulse of inverter circuit output frequency F and motivate energy converter；
Energy converter is time span T, frequency F, amplitude A the alternating current pulses switch of above-mentioned time span T, frequency F, voltage V
Mechanical pulsing elastic wave, and motivate be connected with energy converter a series of pulse harmonics are generated by descaling equipment；
Harmonic wave sample circuit, acquisition is by pulse harmonic response point on descaling equipment and is translated into electric signal；
The electric signal that harmonic wave sample circuit converts is fed back to DSP microprocessing systems by A/D conversion circuit.
Further, the mechanical pulsing elastic wave working frequency is 10kHz~35kHz, and pulse working time is never small
In 10ms.
Further, the energy converter uses the magnetostriction materials welding processing not less than 700 DEG C to be made.
Further, the direct or indirect setting of the energy converter is on by descaling equipment.
A kind of antiscaling, descaling method using shear elastic wave passivation on line scaler system, includes the following steps:
Step 1, alternating current 220V power supply are processed into steady direct current by current rectifying and wave filtering circuit；
Step 2, DSP microprocessing systems control inverter circuit direct current be converted into the time span T that can change, frequency F,
The exchange electric impulse signal of voltage V；
Step 3, exchange electric impulse signal motivate energy converter, time span T, frequency F, voltage V alternating current pulses switch when
Between length T, frequency F, amplitude A mechanical pulsing elastic wave, meanwhile, by descaling equipment by after the mechanical elasticity pulse wave excitation,
Generate a series of pulse harmonics；
Step 4, pulse harmonic response point are converted into electric signal by harmonic wave sample circuit；
The electric signal that harmonic wave sample circuit converts is fed back to DSP microprocessing systems by step 5, A/D conversion circuit；
Step 6, DSP microprocessing systems carry out harmonic responding analysis to by descaling equipment, find by all vibration moulds of descaling equipment
State Harmony response Frequency point, and control the frequency F excitation energy converter of the exchange electric pulse of inverter circuit output.
The advantages of ultrasonic for scale prevention and removal technology is to transmit power sound wave energy by the metal material of heat exchanger (or pipeline)
Amount, is 120 times or more in air, and in a metal since the transmission speed of sound wave in a metal is 3 times or more in water
Attenuation rate will far smaller than in water with the decaying in air；So ultrasonic wave is conducive to the propagation in metal material, surpass
Sound wave can cause micro- vibration of metal particle when transmitting in a metal, according to the Track character of heat exchanger (or pipeline) fouling, heat exchange
Being precipitated and being gradually adhered on the inner wall of heat exchanger tube at after dirt matter supersaturation in device (or pipeline), is one in the process
A dynamic process, dirt matter while being constantly adhered on tube wall, there are also some constantly removed at dirt matter and
Tube wall is left, at this time the transmitting due to power sound wave in metal pipe-wall, metal pipe-wall is made to produce the fluctuation of high frequency short arc,
The kinetic energy and speed of dirt matter removing tube wall are accelerated into, thus has the function of certain antiscaling, descaling.Ultrasonic wave is in a metal
Transmitting waveform there are mainly three types of form, one is burst waveforms, and it to be exactly invariable power there are also one kind that one is long pulse waveforms
Smooth waveform.
Different power sound wave waveforms has different functional characteristics, is described as follows:
Short pulse: the work characteristics of short pulse Anti-fouling Technology is that the working time of power sound wave is very of short duration, generally in 5ms
Hereinafter, and relative efficiency working time interpulse period it is very long, generally in 80ms or so, can thus use capacitor charge and discharge
Form give energy converter power supply.Based on These characteristics, the instantaneous power of short pulse is larger, but lasting power density is very small,
Its advantage is that control equipment and energy converter calorific value very little, electricity consumption is small, and transmitting in a metal is apart from relatively long pulse technique
It is much smaller, in metal heat-exchange pipe surface propagation power acoustic wave energy, prevent metal particle from generating continuous elliptic motion, only
There is faint interrupted elliptic motion, the shearing effect for being mainly used to antiscaling, descaling in this way is just very faint, i.e. short pulse technology
Antiscaling, descaling ability it is very faint, can be used only in the not serious field of scale velocity very little or fouling.In addition, short pulse technology
Higher energy density in order to obtain in practical applications, for handling the more serious heat exchanger of fouling, increase in demand energy converter
Installation number, not only increase the construction workload at scene, and the interference problem between energy converter output power sound wave in this way
It is bad solve the problem of to be easy to produce cancel out each other.
Long pulse: long pulse Anti-fouling Technology is the upgrading technology of short pulse Anti-fouling Technology, it not only after
The short pulse Anti-fouling Technology held forms certain pulse-type disturbance to heat-transfer surface when transmitting in a metal, and this pulse is disturbed
It is dynamic can be stronger.The long pulse Anti-fouling Technology that the present invention uses refers to that the work characteristics of power sound wave is the work of power sound wave
It is longer to make the time, generally in 10ms or more, also may be implemented continuous impulse, and relative efficiency working time interpulse period
It is shorter, generally in 100ms or so, thus energy converter power demands can be unable to satisfy with the form of capacitor charge and discharge, and need
Want relatively high power that can generate the circuit power supply of continuous power pulse.Based on These characteristics, the instantaneous power of long pulse is also larger,
And lasting power density is also bigger, the disadvantage is that control equipment and energy converter calorific value are larger, cooling fin etc. is taken to arrange
It applies and just can effectively solve heating problem, without complicated water cooling measure, transmitting in a metal is apart from relative short pulse skill
Art is long very much, and it is small to decay, in metal heat-exchange pipe surface propagation power acoustic wave energy, as shown, long pulse of the invention
That rushes that Anti-fouling Technology heat exchanging device or pipeline apply is greater than 10ms or continuous impulse waveform, and this waveform can make gold
Belong to particle and generate continuous elliptic motion, the peak swing of this elliptic motion is not more than 5 microns, and vibrational energy is that metal is tired
Within the 1/10 of labor phase, it can be ensured that it is that elastic wave is propagated in a metal, i.e., long pulse Anti-fouling Technology exchange of the invention
That elastic shear wave is playing a leading role during the antiscaling, descaling of hot device or pipeline, can absolute guarantee set by descaling and antiscaling
Standby safe operation is not influenced on by the service life of descaling and antiscaling equipment.This continuous elliptic motion of metal particle is changed
Hot surface has extraordinary shearing effect, and the shearing effect for being mainly used to antiscaling, descaling in this way is just very big, i.e., to the stripping of dirt
From ability with regard to fine, long pulse Anti-fouling Technology of the invention can be used in scale velocity quickly or the serious field of fouling,
Such as before contaminated water evaporator technology antiscaling, descaling originally useless, the pickling that stops production monthly is needed at least once, is not only wasted
Manpower and material resources cause production suspension induced losses, and generate the environmental pollutions such as spent acid, use long pulse Anti-fouling Technology of the invention
Afterwards, it can guarantee the long-term vimala operation of contaminated water evaporator.
In addition, long pulse Anti-fouling Technology heat exchanging device of the invention or pipeline apply working frequency design also compared with
Width can encounter the heat exchange equipment of different metal material and different configuration, and different in 10kHz~35kHz in practical application
Scale velocity and different dirty matter features, there are also the parameters such as different temperature, pressure, pH value, hardness；Different live foulings
Problem needs the parameter of different antiscaling descaling equipments, the characteristics of due to long pulse Anti-fouling Technology of the invention, the skill
The output of frequency conversion phase shift multi-peak may be implemented in art in practical applications, can mention according to scene by the different characteristics of descaling equipment
For suitable output parameter, to realize optimal tartar preventing iron tartar effect, i.e. the live adaptability of long pulse technology is very good,
Find that long pulse Anti-fouling Technology adaptation range of the invention is very extensive in practical application, to all the components at dirt matter
All there is very good prevention and Scavenging activity, and to decarbonizing, scabbing etc. also has extraordinary effect, there is wide spectrum
Property.
Invariable power smooth waveform: the power sound wave technical controlling circuit of this waveform is relatively easy, is generally adapted used in function
On rate ultrasound biochemical equipment, or apply in fields such as Ultrasonic machinings.The general output power ratio of the power sound wave equipment of this waveform
Larger, power consumption is big, and calorific value is big, needs water cooling.The antiscale that the power sound wave technology of this waveform is unsuitable to apply to heat exchanger removes
Dirty field, first is that because single transducer power is larger, using, being easy to keep heat exchanger localized sound wave power larger on heat exchangers
And non-resilient fluctuation is caused, the service life of heat exchanging device, which is formed, to be influenced；The power sound wave technology of this waveform passes in a metal
Sowing time, calorific value is big, and energy loss is big, and decaying is fast.It is crucial that the power sound wave technology of this waveform is propagated in a metal
When keep the shift length of metal particle smaller, only fluctuated near vibration balancing point, and cannot generate metal particle has rule
The elliptic motion of rule cannot also generate good shearing force；In addition, being easy to make gold due to being that the wave type energy of balance is propagated
Belong to wall surface and dirt is a kind of forms new equilibrium state, keeps the disturbance quantity between metal wall surface and dirt small, make descaling and antiscaling
Reduced capability.
The present invention have actively progress the utility model has the advantages that
1. the present invention uses power sound wave long pulse technology, have the characteristics that frequency conversion, phase shift, multi-peak, bandwidth, relative to short
Impulse waveform technology and smooth waveform technology, decaying in transmittance process in a metal, small, transmitting distance is remote, makes heat exchanger or metal
The surface particle of pipeline generates elliptic motion, so that metal surface be made to generate biggish shearing force, have very strong antiscaling, descaling,
Anti- scar removes scar ability；
2. the magnetostriction materials welding processing of energy converter of the invention using temperature higher than 700 DEG C forms, this in use process
Dieing, barrier point is few, Long-Term Properties are unattenuated, little power consumption, long service life, can be used continuously 10 years or more；
3. energy converter is arranged using distributing in the present invention, in a metal transfer elastic wave, and amplitude is usually no more than 5 μm, quilt
Equipment unstressed concentrations generation is installed, to by the equipment of descaling and antiscaling without damage；
4. the power sound wave long pulse technology that the present invention uses, due to having the characteristics that bandwidth, transmitting apart from remote, energy converter can
To be connected using directly welding or by special joint or connect setting by descaling and antiscaling by diversified forms such as special mould clamps
It is standby, it is not only installed and used for a long time on by descaling and antiscaling equipment, tool use can also be done, it can quick online scavenging valve badge
Extremely, the problems such as regulating valve is not adjustable, pipeline blocks；
5. the heat exchanger and pipeline that are applicable not only to industrial circle carry out descaling and antiscaling, it is also applied to the process industries such as petrochemical industry
Design process, reduce or prevent process industry due to dirt, scab, carbon distribution the problems such as cause enterprise reduce stop production, improve produce
Quality is of great significance to energy-saving and emission-reduction etc..
Detailed description of the invention
Fig. 1 is energy converter of the present invention scheme of installation on fixed tube-sheet exchanger.
Fig. 2 is energy converter of the present invention scheme of installation on U-shaped pipe heat exchanger.
Fig. 3 is energy converter of the present invention scheme of installation on movable tube sheets heat exchanger.
Fig. 4, which is that energy converter of the present invention is vertical with midget tube shell heat exchanger, to be connect.
Fig. 5 has a certain degree for energy converter of the present invention and connect with midget tube shell heat exchanger.
Fig. 6 is the connection of energy converter of the present invention and plate heat exchanger.
Fig. 7 is that energy converter of the present invention is connect with spiral heat exchanger.
Fig. 8 is descaling and antiscaling flow diagram in the present invention.
Specific embodiment
Using the course of work of shear elastic wave passivation on line scaler system
It is illustrated in fig. 8 shown below, alternating current 220V power supply is processed into steady direct current, DSP microprocessing systems control by current rectifying and wave filtering circuit
Inverter circuit processed is converted into direct current the exchange electric impulse signal of the time span T that can change, frequency F, voltage V；Exchange
Electric impulse signal motivate energy converter, time span T, frequency F, the alternating current pulse transition time length T of voltage V, frequency F,
The mechanical pulsing elastic wave of amplitude A due to energy converter and is closely connection (welding) by descaling equipment and forms an entirety, is somebody's turn to do
Mechanical pulsing elastic wave is transmitted on heat-transfer surface in by descaling equipment, by descaling equipment by the mechanical elasticity pulse wave excitation
Afterwards, a series of pulse harmonics can be generated, the pulse harmonic have frequency conversion phase shift performance, and the pulse working time of the harmonic wave and
Interval time controlled by DSP microprocessing systems it is changeable, in order to realize better tartar preventing iron tartar effect.Transducing in real work
The frequency of device output harmonic wave is corresponded to by the various mode of oscillation Harmony response points of descaling equipment itself, the mode of oscillation Harmony response point
Electric signal is converted by harmonic wave sample circuit again, gives DSP microprocessing systems by A/D conversion circuit, DSP microprocessing systems are logical
Signal calculation processing is crossed, carries out harmonic responding analysis to by descaling equipment, is found by all mode of oscillation Harmony responses of descaling equipment
Frequency point, and control the frequency F excitation energy converter of the exchange electric pulse of inverter circuit output, it is ensured that the frequency of energy converter of the present invention
Output switches on these Frequency points, the shear elastic wave of maximal efficiency is obtained with by descaling equipment in this way, to reach
The effect of efficient scale removal.
(DSP microprocessing systems are the intelligent generating systems of waveform output, it can pass through the setting and heat exchange of program
The microcosmic resonance frequency feedback signal of device compares to export the control signal of different frequency, which controls inverter circuit progress again
Become power drive signal after power conversion, then driving energy converter becomes elastic shear wave and transmits in a metal；
In the frequency separation of setting, the output frequency of controller can also can change from high to low from low to high, that is, realize
The frequency sweep function of shear elastic wave, thus effectively eliminate energy wave in a metal transmit in trough at the low problem of energy
The problem of with effective transmitting.Because heat exchanger of different shapes made of metal does not all have different microcosmic resonance frequencies, only
When having the microcosmic resonance frequency when the frequency of DSP microprocessing systems output and heat exchanger, ability effectively transfer elastic shearing wave reaches
To effective tartar preventing iron tartar effect
The frequency for passing elastic shear wave of DSP microprocessing systems output can be fixed and invariable, and be also possible to frequency sweep mode change
Change)
Due to the method for the technology of the present invention antiscaling, descaling be the shear elastic wave that is generated by the elliptic motion of heat-transfer surface particle come
The adherency of various dirts is prevented, and removes various dirts.Substantially not by factors such as pressure, temperature, viscosity, flow velocity, pH values
It influences, therefore the antiscaling, descaling ability with broad spectrum activity.
Embodiment 1
The present embodiment is the descaling and antiscaling method using shear elastic wave passivation on line scaler system on shell-and-tube heat exchanger
Using: shell-and-tube heat exchanger is most common a kind of heat exchange equipment in process industry, according to application mode difference, has plenty of tube side
Fouling has plenty of shell side fouling.In the smaller field of scaling degree, conventional chemical loading techniques or electronics antiscaling, descaling
Technology is effective, but has the fouling of many heat exchangers very serious in actual production field, and heat exchanger runs twenties -day-old
Half heat exchanger will block, and needing to stop work repairs cleaning, seriously affect yield and mass energy is caused to waste.Such as this hair
Bright technical application is on contaminated water evaporator or fouling reboiler very serious, it is ensured that contaminated water evaporator and reboiler are long-term
Vimala operation.Shell-and-tube heat exchanger is roughly divided into fixed tube sheet type, floating head type, U-tube formula again:
Fig. 1 is the scheme of installation on fixed tube-sheet exchanger 11 of energy converter 2.The flange and pipe of fixed tube-sheet exchanger 11
Plate be it is integrated, have bolt hole on flange, bolt hole is avoided when welding energy converter 2, energy converter 2 is uniformly arranged in pipe
On the edge of plate, be conducive to uniformly transferring for power sound wave.The installation number of energy converter 2 by fixed tube-sheet exchanger 11 structure
It makes, material, the speed of fouling and dirty matter feature determine.
Fig. 2 is the scheme of installation on U-shaped pipe heat exchanger 12 of energy converter 2.The flange and tube sheet of U-shaped pipe heat exchanger 12
Be not it is integrated, tube sheet is clamped by two flanges, and energy converter 2 is welded on tube sheet.Energy converter 2 is uniformly arranged in the side of tube sheet
On edge, be conducive to uniformly transferring for power sound wave, the installation number of energy converter 2 by the construction of U-shaped pipe heat exchanger 12, material,
The speed of fouling and dirty matter feature determine.
Fig. 3 is the scheme of installation on movable tube sheets heat exchanger 13 of energy converter 2.The flange and tube sheet of movable tube sheets heat exchanger 13 are not
Be it is integrated, tube sheet is clamped by two flanges, and energy converter 2 is welded on tube sheet.Energy converter 2 is uniformly arranged in the edge of tube sheet
On, be conducive to uniformly transferring for power sound wave.The installation number of energy converter 2 is by the construction of movable tube sheets heat exchanger 13, material, fouling
Speed and dirty matter feature determine.
Embodiment 2
The present embodiment is using the descaling and antiscaling method of shear elastic wave passivation on line scaler system in pipeline, valve and small casing
Application on formula heat exchanger:
Pipeline, valve and midget tube shell heat exchanger be due to fouling or the problems such as scab in industrial processes, also frequent hair
The problem of raw blocking.It is illustrated in fig. 4 shown below, fixture is taken on midget tube shell heat exchanger 14 and is vertically connect with energy converter 2.Such as
Shown in Fig. 5, energy converter 2, which has a certain degree, to be connected on midget tube shell heat exchanger 15.
Embodiment 3
Referring to Fig. 6, plate heat exchanger 6 includes several heat exchange plates 61, wave vibration bar 68, front plate 62 and rear folder in the present embodiment
Plate 63, the wave vibration bar 68 one end at least install one described in energy converter 2, in which: several heat exchange plates 61 are set in heat exchanger
Heat exchanger plates beam is formed in standby frame, is closely connected per a piece of heat exchange plate 61 with wave vibration bar 68.Heat exchange equipment frame is by fore-clamp
Plate 62 and rear plate 63 form, which is arranged between front plate 62 and rear plate 63, the front plate 62 and rear folder
Hot fluid inlet 64, hot fluid outlet ports 65, cold fluid inlet 66, cold fluid outlet 67 are offered on plate 63.And wave vibration bar 68
Have gap passes through front plate 62 and rear plate 63.Working principle is that the energy of the shear elastic wave of energy converter 2 is shaken bar by wave
68 are transmitted on heat exchange plate 61, and whole 61 surface particles of heat exchange plate is made to generate elliptic motion, to generate very strong
Shearing effect, to realize efficient tartar preventing iron tartar effect.The installation number of energy converter 2 and wave vibration bar 68 is by plate heat exchanger 6
The speed and dirty matter feature of size and fouling determine.
In addition, transmitting the technology of shear elastic wave and mode in above-mentioned heat exchange plate 61 also can be applied to shell-and-plate and exchanges heat
On device, since plate heat exchanger 6 and lamella heat exchanger heat exchange efficiency in unit volume or Unit Weight are very high, using this hair
Bright Anti-fouling Technology can reduce numbers of transducers, reduce cost, but have extraordinary tartar preventing iron tartar effect, reason
By as follows:
The embodiment is plate heat exchanger, which compares with shell-and-tube heat exchanger, in same heat exchange efficiency premise
Under, so the light weight of steel, small in size, typically less than the 1/3 of shell-and-tube heat exchanger.Since the quality of plate heat exchanger is small,
The load that can be understood as when shear elastic wave transmits in heat exchanger is small, thus improve shearing wave transmitting uniformity and
Transmission efficiency.In addition, with regard to vibration-sensing rod, shear elastic wave passes through for welding among the heat exchange plate of the plate heat exchanger in the embodiment
Vibration-sensing rod is transmitted to again on every heat exchanger fin, such elastic shear wave energy loss very little during transmitting, unlike shell
The such part energy of formula heat exchanger is absorbed by shell, end socket and tube sheet, and only part energy has been transmitted on heat exchanger tube.
Embodiment 4
Fig. 7 is descaling and antiscaling technical application of the present invention structural schematic diagram in spiral plate type heat exchange equipment 7.
Spiral heat exchanger 7 includes shell 71, spiral plate heat exchange machine core 72, wave vibration plate 78, and the shell 71 is equipped with
Hot fluid inlet 73, cold fluid outlet 74, hot fluid outlet ports 75, cold fluid inlet 76, spiral plate heat exchange machine core 72 are mounted on outer
Inside shell 71, spiral plate exchanges heat machine core 72 by corrosion-resistant, elasticity is good, heat-resisting metal plate high, that heat transfer is excellent rolls, metal
There is support material between plate, to keep the distance between metal plate is uniform to be able to bear certain pressure.Spiral plate heat exchanger
The metal plate of core 72 welds wave vibration item in the two sides of metal plate in coiling process simultaneously, eventually forms wave vibration plate 78, energy converter 2 welds
It connects on wave vibration plate 78, the energy of the shear elastic wave of energy converter 2 is transmitted to spiral plate heat exchange machine core 72 by wave vibration plate 78
On spiral plate, whole whole spiral plate surface particles is made to generate elliptic motion, so that very strong shearing effect is generated, with
Realize efficient tartar preventing iron tartar effect, reason is as follows:
The embodiment be spiral heat exchanger and plate heat exchanger similarly, under the premise of same heat exchange efficiency, so steel
Light weight, small in size, typically less than the 1/3 of shell-and-tube heat exchanger.Since the quality of plate heat exchanger is small, it can be understood as cut
The load cut when elastic wave is transmitted in heat exchanger is small, to improve the transmitting uniformity and transmission efficiency of shearing wave.Separately
Outside, the heat exchange plate of the spiral heat exchanger in the case is the shearing bullet by the special tube sheet transmitting being welded up and down
Wave energy is substantially all is absorbed by heat-transfer surface for property, and shear elastic wave energy during transmitting hardly loses, unlike shell
The such part energy of formula heat exchanger is absorbed by shell, end socket and tube sheet, and only part energy has been transmitted on heat exchanger tube.
The installation number of energy converter 2 is determined by the size of spiral-plate heat exchanger 7 and the speed of fouling and dirty matter feature.
Since heat exchange efficiency is very high in unit volume or Unit Weight for spiral heat exchanger 7, using antiscaling, descaling skill of the invention
Art can have extraordinary tartar preventing iron tartar effect under conditions of reducing by 7 numbers of transducers.
60% halt production or maintenance are all caused because of reasons such as fouling or blockings in the process industries such as petrochemical industry at present
's.By taking shell-and-tube heat exchanger as an example, it only considered in design, production process and meet the technological parameters such as pressure, temperature, heat exchange amount
Requirement, without considering the requirement transmitted in heat exchanger of power sound wave energy, to cause the technology of the present invention actually anti-
The number of devices appropriate for increasing installation is wanted in dirty scale removal application, makes up the deficiency of the original design aspect of heat exchanger, to reach full
Meaning tartar preventing iron tartar effect.Classic case study on implementation is just to incorporate technical requirements of the invention at the initial stage of design heat exchanger
Heat exchanger design process and process, so that heat exchanger is not only met original technique requirement, be also able to satisfy power sound wave
The requirement that energy transmits in heat exchanger can not only reduce the quantity of energy converter installation, achieve the purpose that save input cost,
And optimal tartar preventing iron tartar effect may be implemented.
Shear elastic wave is in passivation on line scaler system by energy wave from the outer position being transmitted on heat-transfer surface of heat exchanger
It sets.Such as: shearing elasticity wave producer is mounted on the tube sheet of shell-and-tube heat exchanger, since tube sheet and heat exchanger tube are closely to weld
It connecing, shear elastic wave can be transferred energy on heat exchanger tube by tube sheet, and so that heat exchanger tube is also generated shear elastic wave, thus
Have the function of antiscaling, descaling and effect.Shearing elasticity wave producer is mounted on the vibration-sensing rod of plate heat exchanger, due to plate
The heat exchanger fin and vibration-sensing rod of formula heat exchanger are closely to weld, and shear elastic wave can be transmitted to each heat exchanger fin by vibration-sensing rod
On, so that heat exchanger fin is also generated shear elastic wave, to have the function of antiscaling, descaling and effect.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in essential scope of the invention, to embodiment described above
Change, deformation will all be fallen within the scope of claims of the present invention.
Claims (5)
1. a kind of shear elastic wave passivation on line scaler system characterized by comprising
AC power source provides operating voltage for shear elastic wave passivation on line scaler system；
Current rectifying and wave filtering circuit, by AC process at direct current；
Inverter circuit；
DSP microprocessing systems, control inverter circuit are converted into direct current the exchange electric pulse of time span T, frequency F, voltage V
Signal, harmonic responding analysis are found by descaling equipment by all mode of oscillation Harmony response Frequency points of descaling equipment, and inversion electricity is controlled
The exchange electric pulse of road output frequency F simultaneously motivates energy converter；
Energy converter is time span T, frequency F, amplitude A the alternating current pulses switch of above-mentioned time span T, frequency F, voltage V
Mechanical pulsing elastic wave, and motivate be connected with energy converter a series of pulse harmonics are generated by descaling equipment；
Harmonic wave sample circuit, acquisition is by pulse harmonic response point on descaling equipment and is translated into electric signal；
The electric signal that harmonic wave sample circuit converts is fed back to DSP microprocessing systems by A/D conversion circuit.
2. shear elastic wave passivation on line scaler system as described in claim 1, which is characterized in that the mechanical pulsing elasticity
Wave working frequency is 10kHz~35kHz, and pulse working time is not less than 10ms.
3. shear elastic wave passivation on line scaler system as described in claim 1, which is characterized in that the energy converter is not using
Magnetostriction materials welding processing lower than 700 DEG C is made.
4. shear elastic wave passivation on line scaler system as described in claim 1, which is characterized in that the energy converter directly or
Indirectly it is arranged on by descaling equipment.
5. a kind of antiscaling, descaling method using shear elastic wave passivation on line scaler system, which is characterized in that including walking as follows
It is rapid:
Step 1, alternating current 220V power supply are processed into steady direct current by current rectifying and wave filtering circuit；
Step 2, DSP microprocessing systems control inverter circuit direct current be converted into the time span T that can change, frequency F,
The exchange electric impulse signal of voltage V；
Step 3, exchange electric impulse signal motivate energy converter, time span T, frequency F, voltage V alternating current pulses switch when
Between length T, frequency F, amplitude A mechanical pulsing elastic wave, meanwhile, by descaling equipment by after the mechanical elasticity pulse wave excitation,
Generate a series of pulse harmonics；
Step 4 is converted into electric signal by harmonic wave sample circuit by the pulse harmonic response point on descaling equipment；
The electric signal that harmonic wave sample circuit converts is fed back to DSP microprocessing systems by step 5, A/D conversion circuit；
Step 6, DSP microprocessing systems carry out harmonic responding analysis to by descaling equipment, find by all vibration moulds of descaling equipment
State Harmony response Frequency point, and control the frequency F excitation energy converter of the exchange electric pulse of inverter circuit output.
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