CN108800098B - A kind of boiler system of intelligent control setting cutting heat exchanger components - Google Patents
A kind of boiler system of intelligent control setting cutting heat exchanger components Download PDFInfo
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- CN108800098B CN108800098B CN201810561083.XA CN201810561083A CN108800098B CN 108800098 B CN108800098 B CN 108800098B CN 201810561083 A CN201810561083 A CN 201810561083A CN 108800098 B CN108800098 B CN 108800098B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/18—Applications of computers to steam boiler control
-
- 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
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
-
- 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
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
-
- 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
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
- F22B37/545—Valves specially adapted therefor
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
A kind of boiler system of intelligent control setting cutting heat exchanger components, the present invention provides a kind of boiler systems, the water of quantity of steam and input boiler that the system is generated according to boiler carries out automatically controlling, the boiler periodically carries out blowdown, the central diagnosis monitor sets blowdown flow rate according to the ratio between quality of steam and the quality for the water for inputting boiler automatically, the drum connection tedge and down-comer, multiple cutting heat exchanger components are arranged in interval in the tedge, the cutting heat exchanger components extend along tedge short transverse, a number of hole is provided on the cutting heat exchanger components, the hole penetrates through cutting heat exchanger components in tedge short transverse.Two-phase fluid is separated into liquid phase and vapour phase by cutting heat-exchanger rig by the present invention, is had the effect of vibration and noise reducing, and enhance heat exchange, is improved heat transfer effect.
Description
Technical field
The invention belongs to field of boilers, belong to the field F22.
Background technique
In operation, with the output of steam, pot water is concentrated steam boiler.When salinity increases to a certain extent,
Pot water can generate foam, and priming occurs, and steam causes serious false water level largely with water, keep 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 are, it is specified that the dissolved solid concentration (TDS) of 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 is discharged in the downside of drum evaporating surface, and the accordingly low make-up water of supplement salinity, realization pair
The dilution of pot water salinity.If blowdown flow rate is insufficient, the salinity of pot water can be higher and higher；Conversely, if blowdown flow rate is excessive, because
Discharge is the pot water containing a large amount of thermal energy, will cause the waste of energy loss and soft water resource.The optimal case of energy-saving and emission-reduction
It is that it is up to standard to be controlled with the smallest blowdown flow rate for boiler water quality, it is ensured that safe operation improves the thermal efficiency.
Most domestic Industrial Boiler opens or closes blowdown valve using artificial timing (per tour is once or several times).This biography
The method for discharging pollution of system cannot achieve the control on demand of blowdown flow rate.It, generally can only be by maximum possibility in face of the variation of steam flow
Evaporation capacity excess emitters, cause energy waste.Even so, it is centainly qualified that pot water is still difficult to guarantee when load variations are big.
To realize on-demand continuous blowdown, both at home and abroad all in research autocontrol method.Such as 201510601501X is according to pot
The steam-water ratio of furnace carries out automatic pollution discharge, but existing method for discharging pollution is all that a certain parameter reaches a certain level at present, is beaten automatically
Blowdown valve is opened, when a certain parameter drops to a certain lower bound, closes blowdown valve.Though this interval-automatic method for discharging pollution is than artificial timing
Blowdown improves to some extent, but the salt content fluctuation up and down in high and low limit section always, and because of the hysteresis quality that data control, still
There are certain excessive emissions or discharge insufficient, is not optimal blowdown control program.
For above-mentioned defect, the present invention provides a kind of boiler systems of the blowdown of new intelligent control.
Summary of the invention
The present invention obtains rate of water make-up and generates quantity of steam by the rate of water make-up and generation quantity of steam of every boiler of real time monitoring
Dynamic than relationship, according to dynamic proportion relationship, the automatic blowdown flow rate for calculating boiler, adjusted according to blowdown flow rate blowing time and
Blowdown speed.
To achieve the goals above, technical scheme is as follows:
A kind of boiler system, including central diagnosis monitor and boiler, the boiler include being arranged in steam (vapor) outlet pipeline
On flowmeter, pressure gauge and thermometer, for measure output steam flow velocity, pressure and temperature；The flowmeter, pressure gauge
Data connection is carried out with monitoring and diagnosis controller respectively with thermometer, so that the data of measurement are passed to monitoring and diagnosis control
Device, according to the vapor (steam) temperature of measurement, pressure, the quality of steam of flow relocity calculation unit time in monitoring and diagnosis controller；
The boiler includes the sewage pipe that boiler drum lower end is arranged in, and blowdown valve, blowdown valve one end are arranged on sewage pipe
Connecting valve regulating device, adjustment mechanism for valve and monitoring and diagnosis controller carry out data connection, so as to by blowdown valve opening number
According to passing to monitoring and diagnosis controller, while receiving instruction from monitoring and diagnosis controller, adjusts the aperture of blowdown valve；
Flowmeter is set on the water inlet manifold of the boiler, for detect enter boiler in flow, the flowmeter with
Monitoring and diagnosis controller carries out data connection, so that the data of measurement are passed to monitoring and diagnosis controller, monitoring and diagnosis control
Device enters the quality of the water of boiler according to the flow rate calculation unit time of measurement；
The boiler periodically carries out blowdown, and the central diagnosis monitor is according to the matter of quality of steam and the water of input boiler
Ratio between amount sets blowdown flow rate automatically.
Preferably, the central diagnosis monitor is according to the ratio between quality of steam and the quality for the water for inputting boiler
Automatic setting blowing time, to automatically control blowdown flow rate.
Preferably, when starting periodically to carry out blowdown, if the quality of steam of monitoring and diagnosis controller detection and input pot
Ratio between the quality of the water of furnace is less than limit value, then monitoring and diagnosis controller closes blowdown by adjustment mechanism for valve
Valve；If the ratio between the quality of the water of the quality of steam and input boiler of monitoring and diagnosis controller detection is greater than upper limit number
Value, the central diagnosis monitor set blowdown according to the ratio between quality of steam and the quality for the water for inputting boiler automatically
Amount.
Preferably, if after blowdown, the quality of the water of the quality of steam and input boiler of monitoring and diagnosis controller detection
Between ratio be still greater than limit value, then boiler issue standby signal.
Preferably, with the increase of the ratio between quality of steam and the quality for the water for inputting boiler, blowdown flow rate is continuous
Increase, and with the increase of the ratio between quality of steam and the quality for the water for inputting boiler, the ever-increasing width of blowdown flow rate
It spends increasing.
Preferably, blowdown flow rate control mode is as follows:
Central diagnosis monitor is stored in reference data quality of steam MSteam, input boiler water mass MWaterAnd blowing time
T, blowdown speed V is the ratio M between the quality of the water of quality of steam and input boilerSteam/MWaterWhen the blowdown flow rate that meets the requirements
V*T,
Then quality of steam becomes mSteam, input boiler the quality of water become mWaterWhen, blowing time t and blowdown speed v
Meet following require:
(v*t)/(V*T)=a* ((mSteam/mWater) * (MWater/ MSteam))b, wherein a, b are parameter, meet following formula:
(mSteam/mWater) * (MWater/ MSteam) < 1,0.96 < a < 1.0;
(mSteam/mWater) * (MWater/ MSteam)=1, a=1；
(mSteam/mWater) * (MWater/ MSteam)>1,1.0<a<1.05;
Need to meet following condition: 0.85 < (m in above-mentioned formulaSteam/mWater) * (MWater/ MSteam) < 1.15；
In above-mentioned formula, temperature MSteam、mSteamIt is the quality of steam generated the unit time, unit is Kg/s, MWater、mWaterIt is unit
The quality of the water of time input, unit are Kg/s, and blowdown speed V, v are the sewage speed of discharge, unit m/s, blowing time
The unit of T, t are s.
Preferably, as (mSteam/mWater) * (MWater/ MSteam) < 1, a=0.974；1.03<b<1.06.
Preferably, as (mSteam/mWater) * (MWater/ MSteam) > 1, a=1.03；1.06<b<1.08.
Preferably, the drum connection tedge and down-comer, the tedge is interior to separate the multiple cuttings heat exchange of setting
Component, the cutting heat exchanger components extend along tedge short transverse, are provided on the cutting heat exchanger components a number of
Hole, the hole tedge short transverse penetrate through cutting heat exchanger components.
Compared with prior art, boiler system of the invention has the advantage that
1) present invention obtains input water and generation by the input water and generation quantity of steam of every boiler of real time monitoring
The dynamic of quantity of steam is than relationship, and according to dynamic proportion relationship, the automatic blowdown flow rate for calculating boiler adjusts blowdown according to blowdown flow rate
Time and blowdown speed.The present invention is because be that automatic calculating blowdown flow rate reduces the prior art and control and band compared with prior art
The hysteresis quality come can be realized optimal blowdown control.
2) reference data is stored in controller by the present invention, and controller is according to the carrying capacity of calculating and moving for generation quantity of steam
State is than relationship, and automatic to calculate blowdown quantity, this quantity will be greatly reduced because of valve regulated and bring hysteresis quality error.
3) boiler of the invention also has zero offset capability.Base value is corrected automatically according to the water quality blowdown situation of detection
According to, guarantee regulation accuracy.
4) two-phase fluid is separated into liquid by cutting heat-exchanger rig by present invention setting cutting heat-exchanger rig in tedge
Phase and vapour phase, are divided into small liquid group for liquid phase, vapour phase are divided into minute bubbles, promotes vapour phase smooth outflow, plays regime flow
Effect, have the effect of vibration and noise reducing, and the present invention is equivalent to and is increased in tedge by setting cutting heat-exchanger rig
Inner area, enhances heat exchange, improves heat transfer effect.
Detailed description of the invention
Fig. 1 is the schematic diagram that drainage of the present invention automatically controls；
Fig. 2 is the schematic view of the front view of present invention cutting heat exchanger components one embodiment；
Fig. 3 is present invention cutting heat exchanger components arrangement schematic diagram in tedge；
Fig. 4 is another schematic diagram that present invention cutting heat exchanger components are arranged in tedge；
Fig. 5 is the flow diagram that the present invention controls.
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 sewage pipes, 11 flowmeters, 12 central monitoring diagnosing controllers, 13 tedges, 14 cutting heat exchanger components, 15
Hole, 16 flowmeters.
Specific embodiment
Specific embodiments of the present invention will be described in detail with reference to the accompanying drawing.
Herein, if without specified otherwise, it is related to formula, "/" indicates that division, "×", " * " indicate multiplication.
As shown in Figure 1, a kind of boiler thermodynamic system, the boiler thermodynamic system includes an at least boiler, for generating
Steam, the boiler and monitoring and diagnosis controller 12 carry out data connection, so that the operation to boiler is monitored.
As shown in Figure 1, the boiler includes automatically controlling drainage, the boiler periodically carries out blowdown, described automatic
The water of quantity of steam and input boiler that control of sewage disposal system is generated according to boiler carries out automatically controlling.Specific control system is such as
Under:
As shown in Figure 1, the boiler includes the flowmeter 3, pressure gauge 4 and thermometer being arranged on steam (vapor) outlet pipeline 9
5, for measuring flow velocity, the pressure and temperature of output steam.The flowmeter 3, pressure gauge 4 and thermometer 5 are examined with monitoring respectively
Disconnected controller 12 carries out data connection, so that the data of measurement are passed to monitoring and diagnosis controller 12, controls in monitoring and diagnosis
According to the vapor (steam) temperature of measurement, pressure, the quality of steam of flow relocity calculation unit time in device.
The boiler includes the sewage pipe that 1 lower end of boiler drum is arranged in, and blowdown valve 8, blowdown valve 8 one is arranged on sewage pipe
Connecting valve regulating device 7 is held, adjustment mechanism for valve 7 and monitoring and diagnosis controller 12 carry out data connection, to open valve
Degree evidence passes to (including opening size, opening/closing time and open and-shut mode etc.) monitoring and diagnosis controller 12, while examining from monitoring
Disconnected controller 12 receives instruction, adjusts opening, closing and the opening size of blowdown valve 8.
Further comprise flowmeter 11 on the sewage pipe, measures the flow of blowdown.The flowmeter 11 and monitoring and diagnosis
Controller 12 carries out data connection, to pass data to monitoring and diagnosis controller 12.Monitoring and diagnosis controller 12 is according to stream
Meter calculates the blowdown flow rate of unit time, to calculate unit time blowdown quality.Blowdown quality can use the row of experience
The density of sewage calculates, and (can also need to be arranged in total blown pipe temperature sensor, measurement row by measurement blowdown coolant-temperature gage
The temperature of sewage) specifically the data stored in controller 12 is called to calculate.
The water inlet manifold 2(of the boiler includes return water and moisturizing) on be arranged flowmeter 16, for detect enter boiler in
Water flow, the flowmeter 16 carries out data connection with monitoring and diagnosis controller 12, to pass to the data of measurement
Monitoring and diagnosis controller 12, monitoring and diagnosis controller 12 enter the stream of the water of boiler according to the flow rate calculation unit time of measurement
Amount, to calculate the quality that the unit time enters the water of boiler.The quality of water can be calculated using the density of water, can also be with
Temperature (needing water inlet manifold 2 that temperature sensor is arranged, to measure the temperature of water) by measuring water specifically is called controller 12
The data of middle storage calculate.
It certainly, is the water summation of both recirculation return pipe and water supply pipe into the water of boiler.Preferably, can mend
The flowmeter with 12 data connection of monitoring and diagnosis controller is respectively set on water pipe and circulating water pipe, by calculate both flow it
With so that the unit of account time enters 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 is according to the matter of quality of steam and the water of input boiler
Ratio between amount sets blowdown flow rate automatically.
The blowdown flow rate is calculated by blowdown speed and blowing time, i.e. blowdown flow rate=blowdown speed * blowing time.Institute
It states blowdown speed and is preferably mentioned-above unit time blowdown quality, detected by flowmeter 11, the blowing time is logical
The time of the opening of control valve 8 is spent to calculate.
Control strategy is as follows:
The ratio of the quality of the water of quality of steam and input boiler that monitoring and diagnosis controller 12 calculates is less than lower limit value, then
Show that blowdown rate is excessively high, therefore monitoring and diagnosis controller 12 closes blowdown valve 8 by adjustment mechanism for valve 7.By aforesaid operations,
Can be excessive to avoid blowdown, cause the waste of the energy.If the ratio of quality of steam and the quality of the water of input boiler is greater than upper
Limit value then shows that blowdown rate is too low, may will affect the service life of boiler, the central diagnosis monitor 12 according to quality of steam with
The ratio inputted between the quality of the water of boiler sets blowdown flow rate automatically.
If the ratio after blowdown, between the quality of quality of steam and the water for inputting boiler that monitoring and diagnosis controller 12 detects
Value is still greater than limit value, then boiler issues standby signal.
Preferably, with the increase of the ratio between quality of steam and the quality for the water for inputting boiler, blowdown flow rate is continuous
Increase, and with the increase of the ratio between quality of steam and the quality for the water for inputting boiler, the ever-increasing width of blowdown flow rate
It spends increasing.
It finds under study for action, with the increase of the ratio of Boiler Steam and the quality of water, the increased amplitude of blowdown flow rate is also wanted
Increase, and this higher and higher relationship of increased amplitude, it should be noted that this changing rule is that the applicant passes through largely
First discovery, and the improvement carried out according to its rule are studied, is not being readily apparent that for this field, belongs to of the invention one
Inventive point.Pass through the relationship of the ratio between above-mentioned blowdown flow rate increasing degree and quality of steam and the quality for the water for inputting boiler
Variation, can be corresponding with actual conditions blowdown flow rate, improves contaminant removal effectiveness as soon as possible.
It finds in practical study, is needed between the ratio and blowdown flow rate between the quality of the water of quality of steam and input boiler
There is an optimal relationship, if the ratio between the quality of the water of quality of steam and input boiler is excessive, blowdown flow rate must
It so also requires greatly, filth-discharging effect to be otherwise not achieved.Ratio between the quality of the water of quality of steam and input boiler is small, then blowdown
Amount also requires small, otherwise causes the waste of heat.Therefore blowdown flow rate cannot it is excessive can not be too small, it is excessive will lead to heat damage
It loses, too small to will lead to filth-discharging effect bad.Therefore need accurately to determine the size of suitable blowdown flow rate.The present invention is by largely counting
Value calculate and experimental study, obtained optimal quality of steam and input boiler water quality between ratio and blowdown flow rate it
Between relationship.
Central diagnosis monitor 12 is stored in reference data: quality of steam MSteam, input boiler water mass MWaterWhen with blowdown
Between T, blowdown speed V(, that is, blowdown water flow velocity), be quality of steam and input boiler water quality between ratio MSteam/MWaterFeelings
Under condition, blowdown flow rate V*T meets blowdown requirement.
Reference data indicates the data for meeting certain blowdown condition.Such as it can be satisfaction and reach a certain range of water quality
It is required that reaching and requiring minimum blowdown flow rate etc. under certain water quality situation.
If quality of steam becomes mSteam, input boiler the quality of water become mWaterWhen, blowing time t and blowdown are fast
Degree v meets following three kinds different one of operational modes:
First mode: v keeps reference speed V constant, and blowing time variation is as follows:
T=T* ((mSteam/mWater) * (MWater/ MSteam))c, wherein c is parameter, 1.02 < c < 1.05；Preferably, c=1.04;
Second mode: t keeps fiducial time T constant, and blowdown velocity variations are as follows:
V/V=((mSteam/mWater) * (MWater/ MSteam))d, wherein d is parameter, 1.04 < d < 1.07;Preferably, d=1.053
The third mode: v and t is variable, and the relationship of blowing time and blowdown speed is as follows:
(v*t)/(V*T)=a* ((mSteam/mWater) * (MWater/ MSteam))b, wherein a, b are parameter, meet following formula:
(mSteam/mWater) * (MWater/ MSteam) < 1,0.96 < a < 1.0;
(mSteam/mWater) * (MWater/ MSteam)=1, a=1；
(mSteam/mWater) * (MWater/ MSteam)>1,1.0<a<1.05;
It wherein needs to meet following condition: 0.85 < (m in the formula of above-mentioned Three modelsSteam/mWater) * (MWater/ MSteam) <
1.15；
In above-mentioned formula, temperature MSteam、mSteamIt is the quality of steam generated the unit time, unit is Kg/s, MWater、mWaterIt is unit
The quality of the water of time input, unit are Kg/s, and blowdown speed V, v are the sewage speed of discharge, unit m/s, blowing time
The unit of T, t are s.
The reference data is stored in central diagnosis monitor 12.
Preferably, central diagnosis monitor 12 stores multiple groups reference data.
Preferably, first mode chooses (1-t/T) when meeting multiple groups reference data2The smallest one group of t of value；When
It so also can choose first group of t met the requirements, one group can also be randomly choosed from the t for meet condition；
Preferably, second mode chooses (1-v/V) when meeting multiple groups reference data2The smallest one group of v of value；When
It so also can choose first group of v met the requirements, one group can also be randomly choosed from the v for meet condition；
Preferably, the third mode chooses ((1-v/V)2+ (1-t/T)2) the smallest one group of v and t of value；It can certainly
First group of v and t met the requirements is selected, one group can also be randomly choosed from the v and t for meet condition；
In practical applications, multiple groups reference data is stored in programmable controller, then 12 basis of central diagnosis monitor
Detect the data (m of inputSteam/mWater) * (MWater/ MSteam), meeting 0.85 < (mSteam/mWater) * (MWater/ MSteamIn the case of) < 1.15,
Suitable reference data is automatically selected as foundation.
Preferably, in the case of there is two groups or multiple groups reference data, the reference data of user's selection can be provided
Interface, preferred, system can automatically select ((1-s/S)2+ (1-l/L)2) value it is one the smallest.
The Three models can only store it is a kind of in the programmable controller, also can store two kinds or three kinds can
In programmable controller.
Further preferably, as (mSteam/mWater) * (MWater/ MSteam) < 1, a=0.974；1.03<b<1.06.
Further preferably, as (mSteam/mWater) * (MWater/ MSteam) > 1, a=1.03；1.06<b<1.08.
Preferably, the drum 1 further includes Water Test Kits 6, to measure the water quality in drum.The Water Test Kits
6 carry out data connection with monitoring and diagnosis controller 12, to receive the data of measurement.
Preferably, the boiler also has debugging functions.Preferably, when needing to carry out periodical blowdown, if row
Dirt amount does not reach benchmark blowdown flow rate, and the water quality that monitoring and diagnosis controller 12 detects at this time meets water quality requirement, then monitoring and diagnosis
12 control of sewage disposal valve of controller is closed, if blowdown flow rate is less than benchmark blowdown flow rate (i.e. V*T) certain error at this time, such as preferably
5%, then monitoring and diagnosis controller 12 is automatically by the matter of new blowing time, blowdown speed and quality of steam and the water of input boiler
Ratio between amount is stored in monitoring and diagnosis controller 12 as 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 detects meets water quality requirement, then monitoring and diagnosis controls
12 control of sewage disposal valve of device is closed, if blowdown flow rate is greater than benchmark blowdown flow rate (i.e. V*T) certain error, such as preferably 5% at this time, then
Monitoring and diagnosis controller 12 automatically will be between new blowing time, blowdown speed and quality of steam and the quality for the water for inputting boiler
Ratio be stored in monitoring and diagnosis controller 12 as 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 pervious reference data.
Preferably, pervious reference data is automatically deleted after the upper new reference data of storage.
The drum connects tedge 13, and setting is arranged at intervals with multiple cutting heat exchanger components 14 in the tedge 13,
As shown in Figure 2,3, the cutting heat exchanger components 14 are extended along 13 short transverse of tedge to the cutting heat exchanger components 14
Integral structure part is provided with a number of hole 15 on the cutting heat exchanger components, and the hole 15 is in tedge short transverse
Perforation cutting heat exchanger components.
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 make the efficiency for affecting tedge heat absorption.On the other hand, it is exported to from tedge
This section of drum, because the space of this section becomes larger suddenly, the variation in space will lead to quickly flowing upwards out and assemble for gas,
Therefore spatial variations will lead to the vapour phase (vapour group) of aggregation and enter upper drum from tedge position, due to gas (vapour) liquid density contrast,
Air mass leave adapter tube position will move rapidly upward, and air mass original spatial position by air mass push away wall surface liquid and meanwhile also will be fast
Speed springs back and hits wall surface, forms impingement phenomenon.Gas (vapour) liquid phase is more discontinuous, and air mass aggregation is bigger, and Impact energy is bigger.It hits
Hitting phenomenon will cause biggish noise vibration and mechanical shock, damage to equipment.
The present invention be arranged in tedge cutting heat exchanger components, by cutting heat exchanger components by two-phase fluid liquid phase and
Vapour phase is separated, and liquid phase is divided into small liquid group, vapour phase is divided into minute bubbles, avoids the completely separable of liquid phase and vapour phase,
Promote liquid vapor phase smooth outflow, play the role of regime flow, has the effect of vibration and noise reducing.
The present invention is equivalent in tedge 13 by setting cutting heat exchanger components and increases interior heat exchange area, enhanced
Heat exchange, improves heat transfer effect.
The present invention is because all cross-section locations by vehicle repair major in tedge 13 are divided, thus on entire
The segmentation of liquid-vaqor interface and vapour phase boundary layer and the contact area of cooling wall are realized on riser cross section and enhances disturbance, significantly
Reduce noise and vibration, enhance heat transfer.
Preferably, aperture is arranged between adjacent holes 15 realizes perforation.Pass through setting aperture, it is ensured that adjacent hole it
Between interconnect, can pressure 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, is conducive to further stablize two-phase flow.
Preferably, along the flow direction (i.e. the short transverse of Fig. 4) of fluid in tedge 13, setting in tedge 13
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 being H apart from the distance for rising tube inlet, the spacing between adjacent cutting heat exchanger components is S, S=F1(H), i.e., S is
Using distance H as the function of variable, S ' is the first order derivative of S, meets following require:
S’<0;
Main cause is that carrier's liquid is understood in uphill process because of the steam in tedge, in uphill process, on
Riser is constantly heated, and causes the steam in biphase gas and liquid flow more and more, because the vapour phase in stream-liquid two-phase flow is more and more,
Exchange capability of heat in tedge can increase with vapour phase and weaken relatively, and vibration and its noise also can be continuous with vapour phase increase
Increase.Therefore the distance between the adjacent cutting heat exchanger components for needing to be arranged are shorter and shorter.
In addition, this section of drum 1 is exported to from tedge 13, and because the space of this section becomes larger suddenly, the variation in space
It will lead to quickly flowing upwards out and assemble for gas, therefore spatial variations will lead to the vapour phase (vapour group) of aggregation from tedge position
Into condensation collector, due to gas (vapour) liquid density contrast, air mass leaves adapter tube position and will move rapidly upward, and air mass original space bit
It sets and the liquid of wall surface is pushed away by air mass while will also spring back and hit wall surface rapidly, form impingement phenomenon.Gas (vapour) liquid phase is more not
Continuously, air mass aggregation is bigger, and water hammer energy is bigger.Impingement phenomenon will cause biggish noise vibration and mechanical shock, to equipment
It damages.Therefore in order to avoid the generation of this phenomenon, the distance between adjacent cutting heat exchanger components being arranged at this time are more next
It is shorter, to constantly separate gas phase and liquid phase in fluid delivery process, to reduce vibration and noise to the full extent.
It is found through experiments that, by above-mentioned setting, can both reduce vibration and noise to the full extent, while can mention
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 the second derivative of S, meets following require:
S”>0;
It is found through experiments that, by being improved simultaneously so set, 9% or so vibration and noise can be further decreased
7% or so heat transfer effect.
Preferably, the length of each cutting heat exchanger components 14 remains unchanged.
Preferably, cutting heat exchanger components others parameter other than the distance between adjacent cutting heat exchanger components 14
(such as length, caliber etc.) remains unchanged.
Preferably, along the flow direction (fluid is flowed to upper direction) for rising tube fluid, setting in tedge
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.
The length for cutting heat exchanger components is C, C=F2(X), C ' is the first order derivative of C, meets following require:
C’>0;
Further preferably, the length increasingly length of heat exchanger components is cut to the outlet of tedge from the entrance of tedge
Amplitude is continuously increased.That is C " is the second derivative of C, meets following require:
C”>0;
The variation 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 remain unchanged.
Preferably, in addition to cutting heat exchanger components length be outside one's consideration, cutting heat exchanger components others parameter (such as it is adjacent between
Away from, caliber etc.) it remains unchanged.
Preferably, being set in tedge along the flow direction (i.e. along tedge extending direction) for rising tube fluid
Multiple cutting heat exchanger components are set, from the entrance of tedge to the outlet of tedge, difference cuts the hole 15 in heat exchanger components 14
Diameter is smaller and smaller.The bore dia for cutting heat exchanger components is D, D=F3(X), D ' is the first order derivative of D, meets following require:
D’<0;
Preferably, the bore dia of difference cutting heat exchanger components is increasingly from the entrance of tedge to the outlet of tedge
Small amplitude is continuously increased.I.e.
D " is the second derivative of D, meets following require:
D”>0。
The variation 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 remain unchanged.
Preferably, other than the bore dia of cutting heat exchanger components, cutting heat exchanger components others parameter (such as length,
The distance between adjacent cutting heat exchanger components etc.) it remains unchanged.
Further preferably, as shown in figure 4, groove is arranged inside the tedge, the outer wall of the cutting heat exchanger components 14
It is arranged in groove.
Further preferably, as shown in figure 4, tedge is welded for multi-segment structure, the junction setting point of multi-segment structure
Switch thermal part 14.This mode makes being simple to manufacture for the tedge of setting cutting heat exchanger components, and cost reduces.
It is learnt by analyzing and testing, the spacing cut between heat exchanger components cannot be excessive, leads to damping if excessive
The effect of noise reduction is bad, while can not be too small, causes resistance excessive if too small, similarly, the outer 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 through a large number of experiments, preferential
Meet normal flow resistance (total pressure-bearing be 2.5Mpa hereinafter, single riser on-way resistance be less than or equal to 5Pa/M)
In the case where, so that being optimal of damping noise reduction, has arranged the optimal relationship of parameters.
The hole be it is round, preferably, the distance between adjacent cutting heat exchanger components are J, cut the length of heat exchanger components
Degree is L, and the internal diameter of tedge is M, and 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, and f, g, h, 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 for wherein cutting heat exchanger components is the both ends the distance between opposite with adjacent cutting heat exchanger components；Before i.e.
Cut the tail end of heat exchanger components and the distance between the front end for cutting heat exchanger components below in face.Referring specifically to the mark of Fig. 3.
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, can be realized under the conditions of meeting normal flow resistance,
Damping noise reduction reaches optimum efficiency.
Further preferably, as the increase of M/A, f constantly reduce, g constantly increases.
For parameters such as other parameters, such as tube wall, shell wall thickness according to normal standard setting.
Preferably, hole 15 extends in the whole length direction of cutting heat exchanger components 14.I.e. the length in hole 15 is equal to cutting
The length of heat exchanger components 14.
Preferably, correction factor k can be increased to data when the angle that tedge and horizontal plane are formed is C
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 has been disclosed in the preferred embodiments as above, present invention is not limited to this.Any art technology
Personnel can make various changes or modifications, therefore protection scope of the present invention is answered without departing from the spirit and scope of the present invention
When being defined by the scope defined by the claims..
Claims (1)
1. a kind of boiler system, including monitoring and diagnosis controller and boiler, the boiler includes being arranged on steam outlet pipe road
Flowmeter, pressure gauge and thermometer, for measure output steam flow velocity, pressure and temperature；The flowmeter, pressure gauge and
Thermometer carries out data connection with monitoring and diagnosis controller respectively, so that the data of measurement are passed to monitoring and diagnosis controller,
According to the vapor (steam) temperature of measurement, pressure, the quality of steam of flow relocity calculation unit time in monitoring and diagnosis controller；
The boiler includes the sewage pipe that setting is connect with boiler drum, and blowdown valve, the connection of blowdown valve one end are arranged on sewage pipe
Adjustment mechanism for valve, adjustment mechanism for valve and monitoring and diagnosis controller carry out data connection, to pass blowdown valve opening data
Monitoring and diagnosis controller is passed, while receiving instruction from monitoring and diagnosis controller, adjusts the aperture of blowdown valve；
Flowmeter is set on the water inlet manifold of the boiler, for detecting the flow entered in boiler, the flowmeter and monitoring
Diagnosing controller carries out data connection, so that the data of measurement are passed to monitoring and diagnosis controller, monitoring and diagnosis controller root
Enter the quality of the water of boiler according to the flow rate calculation unit time of measurement；
The boiler periodically carries out blowdown, the monitoring and diagnosis controller according to quality of steam and the quality of the water of input boiler it
Between ratio set blowing time and blowdown speed automatically, to automatically control blowdown flow rate；
Multiple cutting heat exchanger components, the cutting is arranged in the drum connection tedge and down-comer, the interior interval of the tedge
Heat exchanger components extend along tedge short transverse, are provided with a number of hole on the cutting heat exchanger components, the hole exists
Tedge short transverse perforation cutting heat exchanger components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810561083.XA CN108800098B (en) | 2017-05-22 | 2017-05-22 | A kind of boiler system of intelligent control setting cutting heat exchanger components |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810561083.XA CN108800098B (en) | 2017-05-22 | 2017-05-22 | A kind of boiler system of intelligent control setting cutting heat exchanger components |
| CN201710363419.7A CN107084382B (en) | 2017-05-22 | 2017-05-22 | A kind of component feeds back automatic control boiler drainage |
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| CN201710363419.7A Division CN107084382B (en) | 2017-05-22 | 2017-05-22 | A kind of component feeds back automatic control boiler drainage |
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| Publication Number | Publication Date |
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| CN108800098A CN108800098A (en) | 2018-11-13 |
| CN108800098B true CN108800098B (en) | 2019-07-23 |
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| CN201810561081.0A Expired - Fee Related CN108775575B (en) | 2017-05-22 | 2017-05-22 | A kind of increased boiler system of intelligent control blowdown discharge amplitude |
| CN201810561084.4A Expired - Fee Related CN109058970B (en) | 2017-05-22 | 2017-05-22 | Intelligent control boiler system with variable spacing of slitting heat exchange parts |
| CN201810561083.XA Expired - Fee Related CN108800098B (en) | 2017-05-22 | 2017-05-22 | A kind of boiler system of intelligent control setting cutting heat exchanger components |
| CN201710363419.7A Expired - Fee Related CN107084382B (en) | 2017-05-22 | 2017-05-22 | A kind of component feeds back automatic control boiler drainage |
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| CN201810561084.4A Expired - Fee Related CN109058970B (en) | 2017-05-22 | 2017-05-22 | Intelligent control boiler system with variable spacing of slitting heat exchange parts |
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| CN108614428B (en) * | 2018-06-07 | 2020-03-03 | 浙江大学 | High-order control device of thermally coupled air separation column |
| CN114436291B (en) * | 2022-02-16 | 2023-11-10 | 西安西热锅炉环保工程有限公司 | Heat supply system and method for preparing ammonia through urea hydrolysis reaction |
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| CN102080820B (en) * | 2011-01-06 | 2012-07-25 | 西安交大思源科技股份有限公司 | Optimal energy-saving control method for surface pollution discharge of steam boiler |
| CN102588699A (en) * | 2012-02-29 | 2012-07-18 | 北京中油联自动化技术开发有限公司 | Flow equalizer |
| CN203810368U (en) * | 2014-05-07 | 2014-09-03 | 山西大唐国际云冈热电有限责任公司 | Pipeline flow stabilizing device |
| CN104654269B (en) * | 2014-12-18 | 2016-08-24 | 山东中实易通集团有限公司 | The method that in thermal power generation unit, calorific value correction coefficient adjusts RB desired value automatically |
| CN105135407B (en) * | 2015-09-21 | 2017-10-24 | 山东理工大学 | According to the cloud observing and controlling steam generator system of blowdown ratio automatic pollution discharge |
| CN107314362B (en) * | 2015-09-21 | 2019-02-22 | 山东理工大学 | The cloud computing boiler system of intelligence computation water loss |
| CN105222119B (en) * | 2015-09-21 | 2017-04-12 | 山东理工大学 | Cloud-computing-based boiler blow-off system conducting control according to blow-off water quality |
| CN105114935B (en) * | 2015-09-21 | 2017-05-31 | 山东理工大学 | The cloud observing and controlling boiler afterheat system of Based Intelligent Control output temperature |
| CN108870356B (en) * | 2017-04-18 | 2019-10-11 | 青岛吉云德和商贸有限公司 | A kind of steam boiler method that spacing is designed |
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| Publication number | Publication date |
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| CN108775575B (en) | 2019-07-23 |
| CN108800098A (en) | 2018-11-13 |
| CN107084382B (en) | 2018-07-06 |
| CN108775575A (en) | 2018-11-09 |
| CN107084382A (en) | 2017-08-22 |
| CN109058970B (en) | 2020-04-17 |
| CN109058970A (en) | 2018-12-21 |
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