CN108006611B - A kind of cloud processing steam boiler drainage of adjustment blowing time - Google Patents
A kind of cloud processing steam boiler drainage of adjustment blowing time Download PDFInfo
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- CN108006611B CN108006611B CN201711203329.8A CN201711203329A CN108006611B CN 108006611 B CN108006611 B CN 108006611B CN 201711203329 A CN201711203329 A CN 201711203329A CN 108006611 B CN108006611 B CN 108006611B
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- steam
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- monitoring
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Classifications
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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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- 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
Abstract
The present invention provides a kind of boiler systems, the boiler periodically carries out blowdown, the central diagnosis monitor sets blowing time according to the ratio between quality of steam and the quality for the water for inputting boiler automatically, the monitoring and diagnosis controller and cloud server data connection, so that the data of monitoring are passed to cloud server, cloud server is connect with client, the data that client can be monitored by cloud server.The input water and generation quantity of steam that the present invention passes through every boiler of real time monitoring, adjust automatically blowing time, client can grasp boiler blow-out system operating condition in time, and the adjustment of parameters sewage can be carried out by client in time, prevent a large amount of thermal energy waste as caused by boiler blow-out system failure.
Description
Technical field
The present invention be directed to the improvement that the applicant front is applied, belong to steam boiler field, 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, makes furnace control not
Surely.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.Its
In, 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,
What it is because of 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 side of energy-saving and emission-reduction
Case is that it is up to standard to control boiler water quality with the smallest blowdown flow rate, 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.
A kind of blowdown boiler system for solving disadvantages mentioned above, but above-mentioned boiler are proposed in application before the applicant
Drainage includes local server.Local server receives the information that controller is sent, by presetting control in local server
The operating scheme that processing procedure sequence and parameter obtain, the operating scheme control boiler system that controller is obtained according to local server are transported
Row, the i.e. operation of boiler system can only be transported according to the operating scheme that control program preset in local server and parameter obtain
Row.However, system for field complex is changeable, when the operating scheme that local server obtains is unable to satisfy the demand of field conditions
When, need maintenance personnel to arrive at control program and parameter that scene updates local server, so that local server is met
The operating scheme of field conditions can not neatly adjust control program and parameter in local server.
For above-mentioned defect, the present invention provides a kind of boiler systems of the blowdown of the intelligent control of new cloud processing.
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, and above-mentioned dynamic relationship is passed through into cloud server in real time and sends client to, client can be grasped in time
Boiler blow-out system operating condition, and the adjustment of parameters sewage can be carried out by client in time, it prevents due to boiler blow-off
A large amount of thermal energy waste caused by the system failure.
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 setting is connect with boiler drum, and blowdown valve, blowdown valve one end is 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 blowdown speed remains unchanged, and the central diagnosis monitor is according to quality of steam
Ratio between the quality of the water of input boiler sets blowing time automatically, to automatically control blowdown flow rate；
The monitoring and diagnosis controller and cloud server data connection, so that the data of monitoring are passed to cloud service
Device, cloud server are connect with client, the data that client can be monitored by cloud server.
Preferably, monitoring and diagnosis controller is by quality of steam, the quality of input boiler water and quality of steam and inputs pot
Ratio, blowdown speed, the blowing time of the quality of furnace water are transmitted to cloud server, and cloud server passes to above-mentioned data
Client；
Client is manually entered blowing time according to obtained data, passes to monitoring and diagnosis control by cloud server
Device processed manually adjusts blowdown flow rate by monitoring and diagnosis controller.
Preferably, client can preselect setting blowdown speed, monitoring and diagnosis control is passed to by cloud server
Device.
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, when the central diagnosis monitor sets blowdown according to the ratio between quality of steam and the quality for the water for inputting boiler automatically
Between.
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, 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 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；
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, central diagnosis monitor stores multiple groups reference data, client, can be artificial according to obtained data
Reference data is selected, the reference data of selection is passed to by monitoring and diagnosis controller by cloud server, passes through monitoring and diagnosis
Controller manually adjusts blowdown flow rate.
Preferably, being chosen (1-t/T) when meeting multiple groups reference data2The smallest one group of t of value.
Preferably, the drum connection tedge and down-comer, multiple cuttings heat exchange are arranged in the interior interval of the tedge
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) dynamic relationship of boiler operatiopn is passed through cloud server in real time and sends client to by the present invention, and client can
To grasp boiler blow-out system operating condition in time, and the adjustment of parameters sewage can be carried out by client in time, prevent by
The a large amount of thermal energy waste caused by boiler blow-out system failure.
2) present invention obtains input water and production by the input water and generation quantity of steam of every boiler of real time monitoring
The dynamic of raw quantity of steam is than relationship, and according to dynamic proportion relationship, the automatic blowdown flow rate for calculating boiler is remained unchanged in blowdown speed
In the case where, blowing time is adjusted according to blowdown flow rate, the present invention is because be automatic calculating blowdown flow rate, compared with prior art,
Hysteresis quality is reduced, can be realized optimal blowdown control.
3) 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.
4) 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.
5) 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, 17 cloud servers, 18 clients.
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.The monitoring
Diagnosing controller 12 and 17 data connection of cloud server, so that the data of monitoring are passed to cloud server 17, cloud clothes
Business device 17 is connect with client 18, the various information that client 18 can be monitored by cloud server.
Preferably, client 18 can control the operation of boiler system with input data.
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 blowdown quality.Blowdown quality can be using the close of the sewerage of experience
Degree (can also need that temperature sensor is arranged in total blown pipe, measure the temperature of sewerage to calculate by measuring blowdown coolant-temperature gage
Degree) 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.
Preferably, monitoring and diagnosis controller 12 by quality of steam, input the quality and quality of steam and input of boiler water
Ratio, blowdown speed, the blowing time of the quality of boiler water are transmitted to cloud server 17, and cloud server 17 is by above-mentioned data
Pass to client 18；
Preferably, client 18 is manually entered blowing time and blowdown speed, is taken by cloud according to obtained data
Business device 17 passes to monitoring and diagnosis controller 12, manually adjusts blowdown flow rate by monitoring and diagnosis controller 12.
Preferably, the blowdown speed remains unchanged, the central diagnosis monitor 12 is according to quality of steam and input
Ratio between the quality of the water of boiler sets blowing time automatically.
Preferably, client 18 is according to obtained data, when being manually entered blowdown in the case of blowdown speed remains unchanged
Between, monitoring and diagnosis controller 12 is passed to by cloud server 17, blowdown is manually adjusted by monitoring and diagnosis controller 12
Amount.
Preferably, client 18 can be passed to monitoring by cloud server 17 and be examined with preset blowdown speed
Disconnected controller 12, then using the blowdown speed of setting as the blowdown speed remained unchanged.
Preferably, the blowing time remains unchanged, the central diagnosis monitor 12 is according to quality of steam and input
Ratio between the quality of the water of boiler sets blowdown speed automatically.
Preferably, client 18 is manually entered blowdown speed according to obtained data in the case of blowing time remains unchanged
Degree, passes to monitoring and diagnosis controller 12 by cloud server 17, manually adjusts blowdown by monitoring and diagnosis controller 12
Amount.
Preferably, client 18 can be passed to monitoring by cloud server 17 and be examined with preset blowing time
Disconnected controller 12, then using the blowing time of setting as the blowing time remained unchanged.
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, client receives the prompt letter of boiler sending
Number, then client decides whether to continue blowdown.If continuing blowdown, client can input blowing time
And/or blowdown speed carries out blowdown.
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.
Preferably, the blowdown speed remains unchanged, between quality of steam and the quality for the water for inputting boiler
The increase of ratio, blowing time are continuously increased, and with the ratio between quality of steam and the quality for the water for inputting boiler
Increase, the ever-increasing amplitude of blowing time is increasing.
Preferably, the blowing time remains unchanged, between quality of steam and the quality for the water for inputting boiler
The increase of ratio, blowdown speed are continuously increased, and with the ratio between quality of steam and the quality for the water for inputting boiler
Increase, the ever-increasing amplitude of blowdown speed is increasing.
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 (blowdown speed remains unchanged): 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 (blowing time remains unchanged): 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.
Preferably, client can choose operational mode.
The reference data is stored in central diagnosis monitor 12.
Preferably, central diagnosis monitor 12 stores multiple groups reference data.
Preferably, client, can be with artificial selection base according to obtained data when multiple groups reference data is met the requirements
The reference data of selection is passed to monitoring and diagnosis controller by cloud server, passes through monitoring and diagnosis controller by quasi- data
To manually adjust blowdown flow rate.
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.Monitoring and diagnosis controller 12 is by the water of measurement
Matter passes to cloud server 17, and client 18 can obtain water quality information by cloud server 17.
Preferably, client can be according to obtained water quality information, it is determined whether need blowdown.
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.Preferably, the variation of said reference data is believed
Breath passes to client.Before storing new reference data information, client can carry out validation of information, be confirmed whether to need
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 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.Preferably, the change information of said reference data transmits
To client.Before storing new reference data information, 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, client can be confirmed whether above-mentioned debugging functions carry out.
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 (5)
1. a kind of boiler system, including monitoring and diagnosis monitor 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, and blowdown speed remains unchanged, the monitoring and diagnosis monitor according to quality of steam with it is defeated
The ratio entered between the quality of the water of boiler sets blowing time automatically, to automatically control blowdown flow rate；
The monitoring and diagnosis controller and cloud server data connection, so that the data of monitoring are passed to cloud server,
Cloud server is connect with client, the data that client can be monitored by cloud server；
Blowdown flow rate control mode is as follows:
Monitoring and diagnosis monitor is stored in reference data quality of steam MSteam, input boiler water mass MWaterWith blowing time T, row
Dirty speed V indicates the ratio M between the quality of the water of quality of steam and input boilerSteam/MWaterWhen, blowdown flow rate V*T is met the requirements,
Then quality of steam becomes mSteam, input boiler the quality of water become mWaterWhen, blowing time t and blowdown speed v meet
It is following to require:
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；
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 the unit time
The quality of the water of input, unit are Kg/s, and blowdown speed V, v are the sewage speed of discharge, unit m/s, blowing time T, t
Unit be s.
2. boiler system as described in claim 1, which is characterized in that monitoring and diagnosis controller by quality of steam, input boiler
Ratio, blowdown speed, the blowing time of the quality of the quality and quality of steam and input boiler water of water are transmitted to cloud server,
Above-mentioned data are passed to client by cloud server；
Client is manually entered blowing time according to obtained data, passes to monitoring and diagnosis controller by cloud server,
Blowdown flow rate is manually adjusted by monitoring and diagnosis controller.
3. boiler system as described in claim 1, which is characterized in that client can preselect setting blowdown speed, pass through cloud
End server passes to monitoring and diagnosis controller.
4. boiler system as described in claim 1, which is characterized in that when starting periodically to carry out blowdown, if monitoring and diagnosis control
Ratio between the quality of steam of device detection processed and the quality for the water for inputting boiler is less than limit value, then monitoring and diagnosis controller
Blowdown valve is closed by adjustment mechanism for valve；If the matter of the water of the quality of steam and input boiler of monitoring and diagnosis controller detection
Ratio between amount is greater than limit value, the monitoring and diagnosis monitor according to quality of steam and the quality of the water of input boiler it
Between ratio set blowing time automatically.
5. boiler system as claimed in claim 4, which is characterized in that if after blowdown, the steaming of monitoring and diagnosis controller detection
Ratio between the quality of the water of vapour quality and input boiler is still greater than limit value, then boiler issues standby signal.
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| CN104896458A (en) * | 2015-07-01 | 2015-09-09 | 赵丽颖 | Boiler system automatically controlled based on steam price |
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