CN107289440A - A kind of steam generator system of cloud computing intelligent control of sewage disposal speed - Google Patents
A kind of steam generator system of cloud computing intelligent control of sewage disposal speed Download PDFInfo
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- CN107289440A CN107289440A CN201710584061.0A CN201710584061A CN107289440A CN 107289440 A CN107289440 A CN 107289440A CN 201710584061 A CN201710584061 A CN 201710584061A CN 107289440 A CN107289440 A CN 107289440A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/56—Boiler cleaning control devices, e.g. for ascertaining proper duration of boiler blow-down
- F22B37/565—Blow-down control, e.g. for ascertaining proper duration of boiler blow-down
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Abstract
The invention provides a kind of automatic control boiler system, including monitoring and diagnosis controller and boiler, drum also includes Water Test Kits, the Water Test Kits includes pH value test cell, to measure the pH value of the water in drum, the Water Test Kits carries out data cube computation with monitoring and diagnosis controller, to receive the PH data of measurement；The boiler periodically carries out blowdown, and blowing time keeps constant, and the central diagnosis monitor sets blowdown speed automatically according to the pH value of measurement, so as to automatically control blowdown flow rate.PH data of the invention by monitoring every boiler in real time, according to dynamic proportion relation, the automatic blowdown flow rate for calculating boiler, blowing time and blowdown speed are adjusted according to blowdown flow rate, client can grasp boiler blow-out system running situation in time, and the adjustment of parameters sewage can be carried out by client in time, prevent due to the substantial amounts of thermal waste that boiler blow-out system failure is caused.
Description
Technical field
The invention belongs to field of boilers, belong to F22 fields.
Background technology
In operation, with the output of steam, pot water is concentrated steam boiler.When salinity is raised to a certain extent,
Pot water can produce foam, occur priming, a large amount of band water of steam, and cause serious false water level, make furnace control unstable.
Therefore the salt concentration of pot water must be controlled, it is ensured that quality of steam and boiler operatiopn safety.
There is national standard in China to Industrial Boiler water quality, such as in GB1576-2001, to pressure be 1.6~
2.5Mpa, the steam boiler with superheater, the dissolved solid concentration (TDS) of regulation pot water must not exceed 2500mg/L.Wherein,
It is a pot water salt content that dissolved solid, which can be approximately considered,.
The main method of control pot water salt content is, in operation with the output of steam, using the method for surface blow-off,
The high pot water of a part of salinity, and the accordingly low make-up water of supplement salinity, realization pair are discharged in the downside of drum evaporating surface
The dilution of pot water salinity.If blowdown flow rate is not enough, the salinity of pot water can more and more higher；Conversely, if blowdown flow rate is excessive,
What it is because of discharge is the pot water containing a large amount of heat energy, can cause the waste of energy loss and soft water resource.The optimal side of energy-saving and emission-reduction
Case is that, with minimum blowdown flow rate, control boiler water quality is up to standard, it is ensured that safe operation, improves the thermal efficiency.
Most domestic Industrial Boiler opens or closes blowoff valve using artificial timing (per tour is once or several times).It is this to pass
The method for discharging pollution of system can not realize the control on demand of blowdown flow rate., typically can only be by maximum possibility in face of the change of steam flow
Evaporation capacity excess emitters, cause energy waste.Even so, still it is difficult to ensure that card pot water is necessarily qualified when load variations are big.
To realize automatic pollution discharge on demand, both at home and abroad all in research autocontrol method.For example 201510601501X is according to pot
The steam-water ratio of stove carries out automatic pollution discharge, but existing method for discharging pollution is all that a certain parameter reaches to a certain degree at present, is beaten automatically
Blowoff valve is driven, when a certain parameter drops to a certain lower bound, blowoff valve is closed.Though this interval-automatic method for discharging pollution is than artificial timing
Blowdown is improved to some extent, but salt content is fluctuated up and down in high and low limit is interval all the time, and because the hysteresis quality that data are controlled, still
There are certain excessive emissions or discharge deficiency, be not optimal blowdown control program.
A kind of blowdown steam generator system for solving disadvantages mentioned above, but above-mentioned boiler are proposed in application before the applicant
Drainage includes home server.Home server receives the information that controller is sent, by presetting control in home server
The operating scheme that processing procedure sequence and parameter are obtained, the operating scheme control steam generator system that controller is obtained according to home server is transported
OK, i.e., the operation of steam generator system can only be transported according to the operating scheme that default control program and parameter are obtained in home server
OK.However, system for field complex is changeable, when the operating scheme that home server is obtained can not meet the demand of field conditions
When, it is necessary to attendant arrive at scene update home server control program and parameter, so that home server is met
The operating scheme of field conditions, it is impossible to neatly adjust the control program and parameter in home server.
For above-mentioned defect, the invention provides a kind of steam generator system of the blowdown of new intelligent control.
The content of the invention
PH value of the invention by monitoring boiler-steam dome in real time, according to the size of pH value, calculates the blowdown flow rate of boiler automatically,
Blowing time and blowdown speed are adjusted according to blowdown flow rate.
To achieve these goals, technical scheme is as follows：
A kind of steam generator system, including monitoring and diagnosis controller and boiler, the boiler include being arranged on the row of boiler-steam dome lower end
Blowoff valve is set on dirt pipe, blow-off pipe, and blowoff valve one end connecting valve adjusting means, adjustment mechanism for valve is controlled with monitoring and diagnosis
Device carries out data cube computation, to give monitoring and diagnosis controller by valve opening data transfer, while being connect from monitoring and diagnosis controller
Instructed, adjust the aperture of blowoff valve；
The drum also includes Water Test Kits, and the Water Test Kits includes pH value test cell, to measure the water in drum
PH value, the Water Test Kits and monitoring and diagnosis controller carry out data cube computation, to receive the PH data of measurement；
The boiler periodically carries out blowdown, and blowing time keeps constant, the central diagnosis monitor according to the pH value of measurement from
Dynamic setting blowdown speed, so as to automatically control blowdown flow rate；
The monitoring and diagnosis controller and cloud server data cube computation, so as to by the data transfer of monitoring to cloud server,
Cloud server is connected with client, the data that client can be monitored by cloud server.
Preferably, pH value, blowdown speed, blowing time are sent to cloud server, high in the clouds by monitoring and diagnosis controller
Server is by above-mentioned data transfer to client；
Client is manually entered blowdown speed according to obtained data, and monitoring and diagnosis controller is passed to by cloud server,
Blowdown flow rate is adjusted by monitoring and diagnosis controller manually.
Preferably, client can preselect setting blowing time, monitoring and diagnosis control is passed to by cloud server
Device.
Preferably, when starting periodically to carry out blowdown, if the pH value of monitoring and diagnosis controller detection is less than limit value,
Then monitoring and diagnosis controller closes blowoff valve by adjustment mechanism for valve；If the basicity value of monitoring and diagnosis controller detection is more than
Limit value, the central diagnosis monitor sets blowdown flow rate automatically according to pH value.
If preferably, after blowdown, the pH value of monitoring and diagnosis controller detection is still more than limit value, then boiler is sent out
Go out alarm signal.
Preferably, with the increase of pH value, blowing time is continuously increased, and with the increase of pH value, blowing time
Ever-increasing amplitude is less and less.
Preferably, blowdown flow rate control mode is as follows：
Central diagnosis monitor deposit reference data pH value J and blowing time T, blowdown speed V, the pH value for being water in drum is J
When meet require blowdown flow rate V*T,
When then pH value is changed into j, blowing time t and blowdown speed v meet following require：
T holding fiducial times T are constant, and blowdown velocity variations are as follows：
v / V = e*Ln（（j-JStandard）/(J-JStandard)）+ f, wherein e, f are parameter,
（j-JStandard）/(J-JStandard) <1,1.03<e<1.0352,1.01<f<1;
（j-JStandard）/(J-JStandard) =1, f=1；
（j-JStandard）/(J-JStandard)>1, 1.0352<e<1.04；1.0<f<0.99;
Need to meet following condition in above-mentioned formula：0.85<（j-JStandard）/(J-JStandard) <1.15；
In above-mentioned formula, blowdown speed V, v are the sewage speed of discharge, and unit is m/s, and blowing time T, t unit are s.
Preferably, JStandardFor 10-11.
Preferably,（j-JStandard）/(J-JStandard) <1, e=1.0338,f=1.0052。
Preferably,（j-JStandard）/(J-JStandard)>1, e=1.0379,f=0.9983。
Preferably,（j-JStandard）/(J-JStandard) <1, with（j-JStandard）/(J-JStandard) increase, e is increasing, and f is more next
It is smaller.
Preferably,（j-JStandard）/(J-JStandard)>1, as j/J increases, e is increasing, and f is less and less.
Compared with prior art, steam generator system of the invention has the following advantages：
1）The present invention sends the dynamic relationship of boiler operatiopn to client by cloud server in real time, client can and
When grasp boiler blow-out system running situation, it is possible in time by client carry out parameters sewage adjustment, prevent due to pot
The substantial amounts of thermal waste that the dirt removing system failure is caused.
2）The present invention calculates the blowdown flow rate of boiler automatically by the PH data for the drum water for monitoring every boiler in real time,
In the case that blowing time keeps constant, blowdown speed is adjusted according to blowdown flow rate.The present invention because be it is automatic calculate blowdown flow rate,
Compared with prior art, hysteresis quality is reduced, optimal blowdown control can be realized.
3）Reference data is stored in controller by the present invention, and controller calculates blowdown quantity automatically according to PH data, this number
Amount can substantially reduce the hysteresis quality error brought because of valve regulated.
4）The boiler of the present invention also has zero offset capability.Base value is corrected according to the water quality blowdown situation of detection automatically
According to, it is ensured that the accuracy of regulation and control.
5）The interior heat-exchanger rig of present invention providing holes in tedge, liquid is separated into by interior heat-exchanger rig by two-phase fluid
Phase and vapour phase, are divided into small liquid group by liquid phase, vapour phase are divided into minute bubbles, promote vapour phase smooth outflow, play regime flow
Effect, the effect with vibration and noise reducing, and the present invention by set cutting heat-exchanger rig, equivalent in tedge increase
Inner area, enhances heat exchange, improves heat transfer effect.
Brief description of the drawings
Fig. 1 is the schematic diagram that drainage of the present invention is automatically controlled；
Fig. 2 is the main structure diagram of build-in components one embodiment of the present invention；
Fig. 3 is that build-in components of the present invention arrange schematic diagram in tedge；
Fig. 4 is another schematic diagram that build-in components of the present invention are arranged in tedge；
Fig. 5 is the schematic flow sheet that the present invention is controlled.
1 drum, 2 water-supply-pipes, 3 flowmeters, 4 pressure gauges, 5 thermometers, 6 Water Test Kits, 7 adjustment mechanism for valve, 8 blowdowns
Valve, 9 steam pipes, 10 blow-off pipes, 11 flowmeters, 12 CSRC diagnosing controllers, 13 tedges, 14 build-in components, 15 holes, 16
Flowmeter, 17 cloud servers, 18 clients.
Embodiment
The embodiment to the present invention is described in detail below in conjunction with the accompanying drawings.
Herein, if without specified otherwise, being related to formula, "/" represents division, and "×", " * " represent multiplication.
As shown in figure 1, a kind of boiler thermodynamic system, the boiler thermodynamic system includes at least one boiler, for producing
Steam, the boiler carries out data cube computation with monitoring and diagnosis controller 12, so that the operation to boiler is monitored.The monitoring
Diagnosing controller 12 and the data cube computation of cloud server 17, so that by the data transfer of monitoring, to cloud server 17, high in the clouds takes
Business device 17 is connected with client 18, the various information that client 18 can be monitored by cloud server.
Preferably, client 18 can control the operation of steam generator system with input data.
As shown in figure 1, the boiler includes automatically controlling drainage, the boiler periodically carries out blowdown, described automatic
Control of sewage disposal system is automatically controlled according to the pH value of water in boiler-steam dome.Specific control system is as follows：
As shown in figure 1, the boiler includes flowmeter 3, pressure gauge 4 and the thermometer 5 being arranged on steam (vapor) outlet pipeline 9, use
In flow velocity, the pressure and temperature of measurement output steam.The flowmeter 3, pressure gauge 4 and thermometer 5 respectively with monitoring and diagnosis control
Device 12 processed carries out data cube computation, so as to by the data transfer of measurement to monitoring and diagnosis controller 12, in monitoring and diagnosis controller
According to the vapor (steam) temperature of measurement, pressure, the quality of steam of flow relocity calculation unit interval.
The boiler includes setting blowoff valve 8, blowoff valve 8 one on the blow-off pipe for being arranged on the lower end of boiler-steam dome 1, blow-off pipe
Connecting valve adjusting means 7 is held, adjustment mechanism for valve 7 carries out data cube computation with monitoring and diagnosis controller 12, so as to which valve is opened
Degrees of data is passed to（Including aperture size, opening/closing time and open and-shut mode etc.）Monitoring and diagnosis controller 12, while being examined from monitoring
Disconnected controller 12 receives instruction, adjusts opening, closing and the aperture size of blowoff valve 8.
The drum also includes Water Test Kits 6, and the Water Test Kits includes pH value test cell, to measure in drum
Water pH value, the Water Test Kits and monitoring and diagnosis controller carry out data cube computation, to receive the PH data of measurement.
Further comprise flowmeter 11 on the blow-off pipe, measure the flow of blowdown.The flowmeter 11 and monitoring and diagnosis
Controller 12 carries out data cube computation, to pass data to monitoring and diagnosis controller 12.Monitoring and diagnosis controller 12 is according to stream
Gauge calculates the blowdown flow rate of unit interval, so as to calculate unit interval blowdown quality.Blowdown quality can use the row of experience
The density of sewage is calculated, can also by measuring blowdown coolant-temperature gage（Need to set temperature sensor on total blow-off pipe, measurement row
The temperature of sewage）Specifically the data stored in controller 12 are called to calculate.
The water inlet manifold 2 of the boiler（Including backwater and moisturizing）Upper setting flowmeter 16, enters in boiler for detecting
Water flow, the flowmeter 16 and monitoring and diagnosis controller 12 carry out data cube computation, so as to which the data transfer of measurement is given
Monitoring and diagnosis controller 12, monitoring and diagnosis controller 12 enters the stream of the water of boiler according to the flow rate calculation unit interval of measurement
Amount, so as to calculate the unit interval into the quality of the water of boiler.The quality of water can be calculated using the density of water, can also
By the temperature for measuring water（Need water inlet manifold 2 that temperature sensor is set, measure the temperature of water）Specifically call controller 12
The data of middle storage are calculated.
Certainly, the water into boiler is the water summation that is recycled back to both water pipe and filling pipe.Preferably, can mend
Set respectively on water pipe and circulating water pipe with the flowmeter of the data cube computation of monitoring and diagnosis controller 12, by calculate both flows it
With, thus the unit of account time enter the total water of boiler.The present invention can be using various control strategy come control of sewage disposal amount.
The boiler periodically carries out blowdown, and the central diagnosis monitor sets blowdown automatically according to the PH data of detection
Amount.
The blowdown flow rate is calculated by blowdown speed and blowing time, i.e. blowdown flow rate=blowdown speed * blowing times.Institute
State blowdown speed and be preferably foregoing unit interval blowdown quality, detected by flowmeter 11, the blowing time leads to
The time of the opening of control valve 8 is spent to calculate.
Control strategy is as follows：
When starting periodically to carry out blowdown, the numerical value for the PH that monitoring and diagnosis controller 12 is detected is less than lower limit, then showing need not
Blowdown, therefore monitoring and diagnosis controller 12 closes blowoff valve 8 by adjustment mechanism for valve 7（If blowoff valve is closed, directly keep
Blowdown valve closed mode）.By aforesaid operations, blowdown can be avoided excessive, cause the waste of the energy.If the pH value of detection is big
In higher limit, then blowdown is demonstrated the need for, the life-span of boiler may be influenceed, the central diagnosis monitor 12 is according to quality of steam
Ratio between the quality for the water for inputting boiler sets blowdown flow rate automatically.
Preferably, PH numerical value, blowdown speed, blowing time are sent to cloud server by monitoring and diagnosis controller 12
17, cloud server 17 is by above-mentioned data transfer to client 18；
Preferably, client 18 is according to obtained data, blowing time and blowdown speed are manually entered, passes through cloud server
17 pass to monitoring and diagnosis controller 12, and blowdown flow rate is adjusted manually by monitoring and diagnosis controller 12.
Preferably, the blowdown speed keeps constant, the central diagnosis monitor 12 is set automatically according to PH numerical value
Determine blowing time.
Preferably, in the case of blowdown speed keeps constant, client 18 is according to obtained data, when being manually entered blowdown
Between, monitoring and diagnosis controller 12 is passed to by cloud server 17, blowdown is adjusted by monitoring and diagnosis controller 12 manually
Amount.
Preferably, client 18 can be passed to monitoring by cloud server 17 and examined with blowdown speed set in advance
Disconnected controller 12, then regard the blowdown speed of setting as the constant blowdown speed of holding.
Preferably, the blowing time keeps constant, the central diagnosis monitor 12 is set automatically according to PH numerical value
Determine blowdown speed.
Preferably, in the case of blowing time keeps constant, client 18 is manually entered blowdown speed according to obtained data
Degree, passes to monitoring and diagnosis controller 12 by cloud server 17, blowdown is adjusted manually by monitoring and diagnosis controller 12
Amount.
Preferably, client 18 can be passed to monitoring by cloud server 17 and examined with blowing time set in advance
Disconnected controller 12, then regard the blowing time of setting as the constant blowing time of holding.
If after blowdown, the pH value that monitoring and diagnosis controller 12 is detected still is more than limit value, then boiler sends prompting
Signal.Preferably, client receives the cue that boiler is sent, then client decides whether to proceed row
It is dirty.If proceeding blowdown, client can input blowing time and/or blowdown speed to carry out blowdown.
Preferably, with the increase of pH value, blowdown flow rate is continuously increased, and with the increase of pH value, blowdown flow rate is continuous
Increased amplitude is less and less.
Find under study for action, with the increase of the drum pH value of detection, blowdown flow rate will also increase, and increased amplitude is got over
Come smaller, it is necessary to which explanation, this changing rule is that the applicant is had found first by substantial amounts of research, and is entered according to its rule
Capable improvement, is not being readily apparent that for this area, belongs to the inventive point of the present invention.Width is increased by above-mentioned blowdown flow rate
Degree and the change of the relation of pH value, can be corresponding with actual conditions blowdown flow rate, and contaminant removal effectiveness is improved as soon as possible, it is to avoid heat is damaged
Lose.
Found in practical study, an optimal relation is needed between pH value and blowdown flow rate, if drum pH value mistake
Greatly, then blowdown flow rate inevitably asks big, does not otherwise reach filth-discharging effect.Drum pH value is small, then blowdown flow rate also requires that small, otherwise makes
Into the waste of heat.Therefore blowdown flow rate can not it is excessive can not be too small, cross conference cause thermal loss, it is too small blowdown to be caused to imitate
It is really bad.Therefore need accurately to determine the size of suitable blowdown flow rate.The present invention is obtained by substantial amounts of numerical computations and experimental study
The relation gone out between optimal pH value and blowdown flow rate.
Central diagnosis monitor 12 is stored in reference data：PH value J and blowing time T, blowdown speed V（That is blowdown current
Speed）, be boiler-steam dome pH value be J in the case of, blowdown flow rate V*T meets blowdown requirement.
Reference data represents to meet the data of certain blowdown condition.For example can be to meet to reach a range of water quality
It is required that, or reach minimum blowdown flow rate etc. is required under certain water quality situation.
If pH value is changed into j, blowing time t and blowdown speed v meet following three kinds of different operational modes it
One：
First mode：V keeps reference speed V constant, and blowing time change is as follows：
t/T=c*Ln（（j-JStandard）/(J-JStandard)）+ d, wherein c, d are parameter, 1.04<c<1.05,0.99<d<1.01；
（j-JStandard）/(J-JStandard) <1,1.04<c<1.0457,1.01<d<1;It is preferred that, c=1.0442, d=1.0064,
（j-JStandard）/(J-JStandard) =1, d=1；
（j-JStandard）/(J-JStandard)>1, 1.0457<c<1.05；1.0<d<0.99;It is preferred that, c=1.0483, d=0.9985;
It is preferred that with（j-JStandard）/(J-JStandard) increase, c is increasing, and d is less and less；
Second mode：T holding fiducial times T are constant, and blowdown velocity variations are as follows：
v / V = e*Ln（（j-JStandard）/(J-JStandard)）+ f, wherein e, f are parameter, 1.03<e<1.04, 0.99<f<1.01;
（j-JStandard）/(J-JStandard) <1,1.03<e<1.0352,1.01<f<1;It is preferred that, e=1.0338, f=1.0052,
（j-JStandard）/(J-JStandard) =1, f=1；
（j-JStandard）/(J-JStandard)>1, 1.0352<e<1.04；1.0<f<0.99;It is preferred that, e=1.0379, f=0.9983;
It is preferred that with（j-JStandard）/(J-JStandard) increase, e is increasing, and f is less and less；
3rd pattern：V and t are variable, and the relation of blowing time and blowdown speed is as follows：
(v*t)/(V*T)=a*Ln（（j-JStandard）/(J-JStandard)）+ b, a, b are parameter, meet equation below：
（j-JStandard）/(J-JStandard) <1,1.040<a<1.047,1.0<b<1.007；
（j-JStandard）/(J-JStandard) =1, b=1；
（j-JStandard）/(J-JStandard)>1, 1.047<a<1.05；0.992<b<1；
Preferably,（j-JStandard）/(J-JStandard) <1, a=1.035,b=0.996。
Preferably,（j-JStandard）/(J-JStandard)>1, a=1.049,b=1.003。
Preferably,（j-JStandard）/(J-JStandard) <1, with（j-JStandard）/(J-JStandard) increase, a is increasing, and b is increasingly
It is small.
Preferably,（j-JStandard）/(J-JStandard)>1, as j/J increases, a is increasing, and b is less and less.
Wherein JStandardPreferably can be to meet desired PH higher limits to meet the PH numerical value of the normal service requirement of boiler.
JStandardPreferably 10-11, more preferably 10.5.
Need to meet following condition in the formula of above-mentioned Three models：0.85<=（j-JStandard）/(J-JStandard)<=1.15；
In above-mentioned formula, blowdown speed V, v are the sewage speed of discharge, and unit is m/s, and blowing time T, t unit are s.
Preferably, client can select operational mode.
Described reference data is stored in central diagnosis monitor 12.
Preferably, central diagnosis monitor 12 stores multigroup reference data.
Preferably, when multigroup reference data satisfaction is required, client, can be with artificial selection base according to obtained data
Quasi- data, pass to monitoring and diagnosis controller by the reference data of selection by cloud server, pass through monitoring and diagnosis controller
Adjust blowdown flow rate manually.
Preferably, when meeting multigroup reference data, first mode is chosen（1-t/T）2The minimum one group of t of value；When
The t of first group of satisfaction requirement can also be so selected, one group can also be randomly choosed from the t for meeting condition；
Preferably, when meeting multigroup reference data, second mode is chosen（1-v/V）2The minimum one group of v of value；Certainly
The v of first group of satisfaction requirement can be selected, one group can also be randomly choosed from the v for meeting condition；
It is preferred that, the 3rd pattern is chosen（（1-v/V）2+（1-t/T）2）The minimum one group of v and t of value；It can certainly select
The v and t of first group of satisfaction requirement, can also randomly choose one group from the v and t of the condition that meets；
In actual applications, multigroup reference data is stored in programmable controller, then central diagnosis monitor 12 is according to detection
PH value data, meet 0.85<=（j-JStandard）/(J-JStandard)<In the case of=1.15, suitable reference data is being automatically selected
It is used as foundation.
It is preferred that, in the case of there is two groups or multigroup reference data, the reference data of user's selection can be provided
Interface, preferably, system can automatically select（（1-v/V）2+（1-t/T）2）Minimum one of value.
The Three models can only store it is a kind of in the programmable controller, two kinds or three kinds can also be stored can
In programmable controller.
Preferably, the boiler also has debugging functions.Preferably, when needing to carry out periodical blowdown, if row
Dirt amount is not reaching to the blowdown flow rate calculated automatically, and the pH value that now monitoring and diagnosis controller 12 is detected meets water quality requirement, then supervises
Control the control of sewage disposal valve of diagnosing controller 12 to close, if now blowdown flow rate is less than benchmark blowdown flow rate（That is V*T）Certain error, for example
It is preferred that 5%, then new blowing time, blowdown speed and pH value are stored in by monitoring and diagnosis controller 12 as reference data automatically
Monitoring and diagnosis controller 12.Preferably, the change information of said reference data passes to client.Storing new base value
It is believed that before breath, client can carry out validation of information, it is confirmed whether to need to store new reference data.
If blowdown flow rate reaches benchmark blowdown flow rate, but blowdown water quality does not meet the requirements, then monitoring and diagnosis controller 12
Control of sewage disposal valve continues blowdown, and until the water quality that monitoring and diagnosis controller 12 is detected meets water quality requirement, then monitoring and diagnosis is controlled
The control of sewage disposal valve of device 12 is closed, if now blowdown flow rate is more than benchmark blowdown flow rate（That is V*T）Certain error, such as preferably 5%, then
Monitoring and diagnosis controller 12 is automatic to be stored in monitoring and diagnosis control using new blowing time, blowdown speed and pH value as reference data
Device 12 processed.Preferably, the change information of said reference data passes to client.Store new reference data information it
Before, client can carry out validation of information, be confirmed whether to need to store new reference data.
Above-mentioned debugging functions can be carried out periodically, can also be carried out automatically in operation.
Preferably, the priority of the new reference data of storage is higher than former reference data.
Preferably, client can confirm that whether above-mentioned debugging functions are carried out.
Preferably, after the upper new reference data of storage, former reference data is automatically deleted.
The drum, which connects to set in tedge 13, the tedge 13, is arranged at intervals with multiple cutting heat exchanger components 14,
As shown in Figure 2,3, the cutting heat exchanger components 14 are extended along the short transverse of tedge 13 to the cutting heat exchanger components 14
A number of hole 15 is provided with integral structure part, the cutting heat exchanger components, the hole 15 is in tedge short transverse
Heat exchanger components are cut in insertion.
The fluid of tedge is during upwards, usually stream-liquid two-phase flow, so that the fluid in tedge is vapour
Liquid mixture, the presence of stream-liquid two-phase flow causes the efficiency that have impact on tedge heat absorption.On the other hand, exported to from tedge
This section of drum, because the space of this section becomes big suddenly, the change in space can cause the quick of gas to flow upwards out and assemble,
Therefore spatial variations can cause the vapour phase of aggregation（Vapour group）Enter upper drum from tedge position, due to gas（Vapour）Liquid density contrast,
Air mass leaves adapter position and will moved rapidly upward, and the former locus of air mass pushes away the liquid of wall while also will be fast by air mass
Fast resilience simultaneously hits wall, forms impingement phenomenon.Gas（Vapour）Liquid phase is more discontinuous, and air mass aggregation is bigger, and Impact energy is bigger.Hit
Hitting phenomenon can cause larger noise to shake and mechanical shock, and equipment is damaged.
The present invention sets cutting heat exchanger components in tedge, by cut heat exchanger components by the liquid phase in two-phase fluid and
Vapour phase is separated, and liquid phase is divided into small liquid group, vapour phase is divided into minute bubbles, it is to avoid liquid phase and vapour phase it is completely separable,
Promote liquid vapor phase smooth outflow, play a part of regime flow, the effect with vibration and noise reducing.
The present invention, equivalent to interior heat exchange area is added in tedge 13, is enhanced by setting cutting heat exchanger components
Heat exchange, improves heat transfer effect.
The present invention is because all cross-section locations by vehicle repair major in tedge 13 are split, so that on whole
Liquid-vaqor interface and the segmentation in vapour phase boundary layer and the contact area of cooling wall are realized on riser cross section and strengthens disturbance, significantly
Reduce noise and vibrations, enhance heat transfer.
Preferably, setting aperture to realize insertion between adjacent holes 15.By setting aperture, it is ensured that adjacent hole it
Between interconnect, pressure that can be between uniform bore so that the fluid of high pressure runner flows to low pressure, while can also be in fluid stream
Further separate liquid phase and vapour phase while dynamic, be conducive to further stablizing two-phase flow.
Preferably, along the flow direction of fluid in tedge 13（That is Fig. 4 short transverse）, tedge 13 is interior to be set
Multiple cutting heat exchanger components 14, from the entrance of tedge to the outlet of tedge, the distance between adjacent cutting heat exchanger components are more
Come shorter.If apart from the distance of tube inlet is risen for H, the spacing between adjacent cutting heat exchanger components is S, S=F1(H), i.e., S is
So that, as the function of variable, S ' is S first order derivative apart from H, following require is met：
S’<0;
Main cause is because the gas in tedge understands carrier's liquid, in uphill process, tedge in uphill process
It is constantly heated, cause the gas in biphase gas and liquid flow more and more, because the vapour phase in stream-liquid two-phase flow is more and more, rise
Exchange capability of heat in pipe can increase with vapour phase and weaken relatively, and vibrations and its noise also can constantly increase as vapour phase increases
Plus.Therefore need the distance between the adjacent cutting heat exchanger components of setting shorter and shorter.
In addition, drum 1 this section is exported to from tedge 13, because the space of this section becomes big, the change in space suddenly
The quick of gas can be caused to flow upwards out and assemble, therefore spatial variations can cause the vapour phase of aggregation（Vapour group）From tedge position
Into condensation collector, due to gas（Vapour）Liquid density contrast, air mass leaves adapter position and will moved rapidly upward, and the former space bit of air mass
Put and the liquid of wall is pushed away while also by rapid resilience and hitting wall by air mass, form impingement phenomenon.Gas（Vapour）Liquid phase is more not
Continuously, air mass aggregation is bigger, and water hammer energy is bigger.Impingement phenomenon can cause larger noise to shake and mechanical shock, to equipment
Damage.Therefore in order to avoid the generation of this phenomenon, the distance between adjacent cutting heat exchanger components now set are more next
It is shorter, so as to constantly separate gas phase and liquid phase in fluid delivery process, so as to reduce vibrations and noise to the full extent.
It is found through experiments that, by above-mentioned setting, vibrations and noise can be both reduced to the full extent, while can carry
High heat transfer effect.
Further preferably, from the entrance of tedge to the outlet of tedge, the distance between adjacent cutting heat exchanger components are more
It is continuously increased come shorter amplitude.That is S " is S second derivative, meets following require：
S”>0;
It is found through experiments that, by being arranged such, can further reduces by 9% or so vibrations and noise, while it is left to improve 7%
Right heat transfer effect.
Preferably, each the length of cutting heat exchanger components 14 keeps constant.
Preferably, in addition to the distance between adjacent cutting heat exchanger components 14, the other parameters of cutting heat exchanger components
（Such as length, caliber）Keep constant.
Preferably, along rise tube fluid flow direction（Fluid flows to upper direction）, tedge is interior to be set
Multiple cutting heat exchanger components 14, from the entrance of tedge to the outlet of tedge, the length for cutting heat exchanger components 14 is increasingly longer.
That is the length of cutting heat exchanger components is C, C=F2(X), C ' is C first order derivative, meets following require：
C’>0;
Further preferably, from the entrance of tedge to the outlet of tedge, the length increasingly longer amplitude of heat exchanger components is cut
It is continuously increased.That is C " is C second derivative, meets following require：
C”>0;
The change of the distance between for example adjacent cutting heat exchanger components of specific reason is identical.
Preferably, the distance between adjacent cutting heat exchanger components keep constant.
Preferably, except the length for cutting heat exchanger components is outside one's consideration, the other parameters of cutting heat exchanger components（For example between adjacent
Away from, caliber etc.）Keep constant.
Preferably, along rise tube fluid flow direction（I.e. along tedge bearing of trend）, set in tedge
Multiple cutting heat exchanger components are put, from the entrance of tedge to the outlet of tedge, difference cuts the hole 15 in heat exchanger components 14
Diameter is less and less.That is the bore dia of cutting heat exchanger components is D, D=F3(X), D ' is D first order derivative, meets following require：
D’<0;
Preferably, from the entrance of tedge to the outlet of tedge, the bore dia of difference cutting heat exchanger components is less and less
Amplitude is continuously increased.I.e.
D " is D second derivative, meets following require：
D”>0。
The change of the distance between for example adjacent cutting heat exchanger components of specific reason is identical.
Preferably, the length of cutting heat exchanger components and the distance of adjacent cutting heat exchanger components keep constant.
Preferably, in addition to cutting the bore dia of heat exchanger components, the other parameters of cutting heat exchanger components（Such as length,
The distance between adjacent cutting heat exchanger components etc.）Keep constant.
Further preferably, as shown in figure 4, setting groove, the outer wall of the cutting heat exchanger components 14 inside the tedge
It is arranged in groove.
Further preferably, as shown in figure 4, tedge is welded for multi-segment structure, the junction of multi-segment structure, which is set, to be divided
Switch thermal part 14.This mode causes being simple to manufacture for the tedge for setting cutting heat exchanger components, cost reduction.
By analysis and experiment learn, cutting heat exchanger components between spacing can not be excessive, it is excessive if cause damping
The effect of noise reduction is bad, while can not be too small, it is too small if cause resistance excessive, similarly, the external diameter in hole can not it is excessive or
Person is too small, and the effect for also resulting in damping noise reduction is bad or resistance is excessive, therefore the present invention is by substantial amounts of experiment, preferential
Meet normal flow resistance（Total pressure-bearing is below 2.5Mpa, or the on-way resistance of single riser is less than or equal to 5Pa/M）
In the case of so that being optimal of damping noise reduction, arrange the optimal relation of parameters.
The hole is circular, preferably, the distance between adjacent cutting heat exchanger components are J, cuts the length of heat exchanger components
Spend for L, the internal diameter of tedge is M, the radius in hole is A, the distance between adjacent hole center of circle B meets following require：
J/L=f-g*LN (M/（2*A）)；
B/（2*A） =h*(M/（2*A）)-i*(M/（2*A）)2-e
Wherein LN is logarithmic function, f, g, h, and i, e is parameter, wherein 3.0<f<3.5,0.5<g<0.6；2.9<h<3.1,0.33<i
<0.37,4.8<e<5.3；
The spacing J of wherein cutting heat exchanger components is with the distance between relative two ends of adjacent cutting heat exchanger components；Above divide
Switch the tail end of thermal part and the distance between front end of cutting heat exchanger components below.Referring specifically to Fig. 3 mark.
34<M<58mm；
4<A<6mm;
17<L<25mm；
32<J<40mm；
1.05<B/（2*A）<1.25.
Preferably, f=3.20, g=0.54, h=3.03, i=0.35, e=5.12.
Preferably, rising length of tube between 3000-8500mm.Further preferably, between 4500-5500mm.
Further preferably, 40mm<M<50mm；
9mm<2A<10mm;
22mm<L<24mm；
35mm<J<38mm。
By the preferred of the optimal geometric scale of above-mentioned formula, it can realize under the conditions of meeting normal flow resistance,
Damping noise reduction reaches optimum efficiency.
Further preferably, as M/A increase, f constantly reduce, g constantly increases.
For other parameters, the parameter such as tube wall, housing wall thickness is set according to normal standard.
Preferably, whole length direction extension of the hole 15 in cutting heat exchanger components 14.I.e. the length in hole 15 is equal to cutting
The length of heat exchanger components 14.
Preferably, in the case of the angle that tedge and horizontal plane are formed is C, correction factor k can be increased to data
It is modified, i.e.,
K* J/L=f-g*LN (M/（2*A）)；k=1/sin(C)d, wherein 0.09<d<0.11, preferably d=0.10.
20°<C<80 °, preferably 40-60 °.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any art technology
Personnel, without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should
It is defined when by claim limited range.
Claims (8)
1. a kind of steam generator system, including monitoring and diagnosis controller and boiler, the boiler include being arranged on boiler-steam dome lower end
Blowoff valve, blowoff valve one end connecting valve adjusting means, adjustment mechanism for valve and monitoring and diagnosis control are set on blow-off pipe, blow-off pipe
Device processed carries out data cube computation, to give monitoring and diagnosis controller by valve opening data transfer, while from monitoring and diagnosis controller
Receive instruction, adjust the aperture of blowoff valve；
The drum also includes Water Test Kits, and the Water Test Kits includes pH value test cell, to measure the water in drum
PH value, the Water Test Kits and monitoring and diagnosis controller carry out data cube computation, to receive the PH data of measurement；
The boiler periodically carries out blowdown, and blowing time keeps constant, the central diagnosis monitor according to the pH value of measurement from
Dynamic setting blowdown speed, so as to automatically control blowdown flow rate；
The monitoring and diagnosis controller and cloud server data cube computation, so as to by the data transfer of monitoring to cloud server,
Cloud server is connected with client, the data that client can be monitored by cloud server.
2. steam generator system as claimed in claim 1, it is characterised in that monitoring and diagnosis controller is by pH value, blowdown speed, blowdown
Time is sent to cloud server, and cloud server is by above-mentioned data transfer to client；
Client is manually entered blowdown speed according to obtained data, and monitoring and diagnosis controller is passed to by cloud server,
Blowdown flow rate is adjusted by monitoring and diagnosis controller manually.
3. steam generator system as claimed in claim 1, it is characterised in that client can preselect setting blowing time, pass through cloud
End server passes to monitoring and diagnosis controller.
4. steam generator system as claimed in claim 1, it is characterised in that when starting periodically to carry out blowdown, if monitoring and diagnosis control
The pH value of device detection processed is less than limit value, then monitoring and diagnosis controller closes blowoff valve by adjustment mechanism for valve；If prison
The basicity value for controlling diagnosing controller detection is more than limit value, and the central diagnosis monitor sets blowdown automatically according to pH value
Amount.
5. steam generator system as claimed in claim 4, it is characterised in that if after blowdown, the PH of monitoring and diagnosis controller detection
Value is still more than limit value, then boiler sends alarm signal.
6. steam generator system as claimed in claim 1, it is characterised in that blowdown flow rate control mode is as follows：
Central diagnosis monitor deposit reference data pH value J and blowing time T, blowdown speed V, the pH value for being water in drum is J
When meet require blowdown flow rate V*T,
When then pH value is changed into j, blowing time t and blowdown speed v meet following require：
T holding fiducial times T are constant, and blowdown velocity variations are as follows：
v / V = e*Ln（（j-JStandard）/(J-JStandard)）+ f, wherein e, f are parameter,
（j-JStandard）/(J-JStandard) <1,1.03<e<1.0352,1.01<f<1;
（j-JStandard）/(J-JStandard) =1, f=1；
（j-JStandard）/(J-JStandard)>1, 1.0352<e<1.04；1.0<f<0.99;
Need to meet following condition in above-mentioned formula：0.85<（j-JStandard）/(J-JStandard) <1.15；
In above-mentioned formula, blowdown speed V, v are the sewage speed of discharge, and unit is m/s, and blowing time T, t unit are s.
7. steam generator system as claimed in claim 6, it is characterised in that JStandardFor 10-11.
8. steam generator system as claimed in claim 7, it is characterised in that（j-JStandard）/(J-JStandard) <1, e=1.0338,f=
1.0052。
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| CN201710584061.0A CN107289440B (en) | 2017-07-18 | 2017-07-18 | A kind of boiler system of cloud computing intelligent control of sewage disposal speed |
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