CN104896458A - Boiler system automatically controlled based on steam price - Google Patents
Boiler system automatically controlled based on steam price Download PDFInfo
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- CN104896458A CN104896458A CN201510326000.5A CN201510326000A CN104896458A CN 104896458 A CN104896458 A CN 104896458A CN 201510326000 A CN201510326000 A CN 201510326000A CN 104896458 A CN104896458 A CN 104896458A
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- boiler
- steam
- diagnostic system
- price
- heat exchanger
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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
- 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
- F22B35/00—Control systems for steam boilers
- F22B35/008—Control systems for two or more steam generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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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)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention provides a boiler heating power system comprising a central monitoring diagnosing system and a plurality of boilers connected in parallel. Each of the boilers is respectively in data connection with the central monitoring diagnosing system; the central monitoring diagnosing system is in data connection with a fuel conveying device of each boiler, so as to timely obtain a fuel input amount of each boiler; the central monitoring diagnosing system is in data connection with electricity consumption information of each boiler, so as to timely obtain the electricity consumption of an auxiliary machine of each boiler; and the central monitoring diagnosing system monitors a tonnage steam cost value parameter of each boiler in real time based on the steam quality outputted by each boiler, the fuel input amount and the electricity consumption. The boiler system automatically controlled based on the steam price allows the heating power system to keep running efficiently, thereby avoiding wasting the energy sources.
Description
Technical field
The invention belongs to field of boilers, belong to F22 field.
Background technology
In steam operation procedure, ton vapour is worth belong to a very important parameter, and ton vapour value index is the important indicator weighing boiler whether Effec-tive Function.Therefore by steam boiler running, spent subsidiary engine power consumption and the total amount of fuel of input are converted to price respectively, and the price of both is added, obtain total price, then the steam total amount produced with this period of time is divided by above-mentioned total price, obtain the index that ton vapour is worth, but do not propose this index and monitor this index to be used at present, therefore by Real-Time Monitoring Boiler Steam value index, analyzing and processing is carried out to it, judge boiler operatiopn state, and guide Automatic Control of Boiler strategy, for raising boiler operating efficiency, economize energy is significant.
Summary of the invention
The present invention is by the ton steam consumption electrical parameter of the every platform boiler of Real-Time Monitoring, and the running status of real-time diagnosis boiler, makes boiler remain Effec-tive Function, avoids the energy waste caused under boiler efficiency.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of boiler thermodynamic system, comprise CSRC diagnostic system and multiple boilers in parallel, each boiler described respectively with CSRC diagnostic system data cube computation, the fuel delivery means of described CSRC diagnostic system and every platform boiler carries out data cube computation, to obtain the fuel input of every platform boiler in time; The power information of described CSRC diagnostic system and every platform boiler carries out data cube computation, to obtain the power consumption of the subsidiary engine of every platform boiler in time, quality of steam, fuel input and power consumption that CSRC diagnostic system exports according to the every platform boiler obtained, the ton steam consumption value parameter of the every platform boiler of Real-Time Monitoring
Described ton vapour is worth the fuel be defined as the subsidiary engine power consumption spent by the operation of boiler a period of time and input and is converted to price respectively, and the price of both is added, obtain total price, then the steam total amount produced with this period of time is divided by above-mentioned total price, obtain the index that ton vapour is worth, i.e. SEF=S
gross mass/ (F
gross mass* F
unit price+ E
power consumption* E
unit price), wherein F
unit price, E
single valencybe the price of the price of per unit fuel, per unit electricity respectively, SEF is that ton vapour is worth, F
always qualityfuel input, E
power consumptionsubsidiary engine power consumption.
Preferably, CSRC diagnostic system, by analyzing the SEF index to the every platform boiler of mark, is analyzed and is judged to increase its operating load by the boiler that SEF is higher; And for the relatively low boiler of SEF, reduce its operating load; If boiler SEF lower than lower limit, then sends alarm.
Preferably, described system comprises steam turbine, generator, vapor-water heat exchanger, the steam that boiler produces is generated electricity by steam turbine drive electrical generators, simultaneously, exhaust steam after generating enters vapor-water heat exchanger, carry out heat exchange with the low-temperature receiver in vapor-water heat exchanger, the condensed water of exhaust steam loops back boiler by circulating pump.
Preferably, described vapor-water heat exchanger is plate type heat exchanger.
As preferably, the flow participating in the heat exchanging fluid of heat exchange in described plate type heat exchanger is different, described plate type heat exchanger comprises heat exchange plate, in the heat exchange plate that flow is little, at least one by-passing parts is set, the flow path of the heat exchanging fluid flowing through heat exchange plate is divided at least two flow manifolds by described by-passing parts, by-passing parts arranges opening, make point Cheng Liudao in described heat exchange plate be cascaded structure, thus the heat exchanging fluid making flow little forms S shape runner on heat exchange plate.
As preferably, heat exchange plate arranges ripple, and the height of ripple is different; On same plate, along the flow path of fluid, the wave height in same split channel raises gradually.
As preferably, the Opening length L1 of by-passing parts, the length of by-passing parts is L2, and flow manifold width W, then meet following relational expression:
L1/L＝a－b＊Ln(L1/W)－c＊(L1/W)；
Wherein L=L1+L2;
400 < L < 800mm, 80 < L1 < 140mm, 130 < W < 150mm; Ln is logarithmic function
0.17＜L1/L＜0.22，0.5＜L1/W＜1.1
0.18＜a＜0.21，0.014＜b＜0.016，0.0035＜c＜0.004。
As preferably, along the direction of fluid flowing, the width W of flow manifolds different on same plate constantly reduces.
Compared with prior art, plate type heat exchanger of the present invention and therrmodynamic system thereof have following advantage:
1) by parameter that the ton steam consumption of Real-Time Monitoring parallel boiler is worth, realize analyzing mark to the boiler of paired running, all the time make most effective boiler be in peak load state, inefficient boiler Timeliness coverage problem also solves as early as possible, makes the boiler of operation keep efficient all the time.。
2) by rate of water make-up and the generation quantity of steam of the every platform boiler of real-time monitoring, obtain the dynamic relationship of rate of water make-up and generation quantity of steam, judge that whether boiler blow-out system is working properly, prevent a large amount of thermal waste because boiler blow-out system fault causes.
3) the combustion system DCS of all for enterprise boilers and electricity generation system DCS is incorporated into an automatically-monitored platform of Centralized Monitoring, this platform can realize the tubularpH sensor to the various important parameter of all boilers, and inline diagnosis analysis is carried out to it, solve the island of automation problem that existing boiler operatiopn exists, and realize boiler energy-saving optimizing operation.
4) the present invention only realizes the unequal demand of hot and cold side liquid actual internal area with same plate change hermetically-sealed construction, and the plate type heat exchanger that assembles of these plates adopts the assembling form of one-sided adapter, can save very large installation and maintenance cost.
5) the present invention is by test of many times, obtains an optimum heat exchange plate optimum results, and is verified by test, thus demonstrate the accuracy of result.
6) develop the on-line analysis diagnostic system of boiler operatiopn and steam turbine power generation, realize boiler energy-saving and run, economize energy.
Accompanying drawing explanation
Fig. 1 is boiler thermodynamic system schematic diagram of the present invention;
Fig. 2 is that boiler combustion system of the present invention controls schematic diagram;
Fig. 3 is electricity generation system Automated condtrol schematic diagram;
Fig. 4 is plate type heat exchanger seal groove schematic diagram of the present invention;
Fig. 5 is gasket seal cross sectional representation of the present invention;
Fig. 6 is the plate type heat exchanger schematic diagram of a runner parallel connection;
Fig. 7 is the schematic diagram of the plate type heat exchanger of runner series connection;
Fig. 8 is the schematic diagram of plate type heat exchanger of the present invention point journey sheet structure;
Fig. 9 is the structural representation of plate type heat exchanger of the present invention point journey pad;
Figure 10 is the sheet structure schematic diagram of the fluid that plate type heat exchanger flow of the present invention is large;
Figure 11 is the structural representation of plate type heat exchanger of the present invention point journey plate;
Figure 12 is the scale diagrams of the plate type heat exchanger point journey plate of Fig. 8;
Figure 13 is the schematic diagram that drainage of the present invention controls automatically.
Reference numeral is as follows:
1 first fluid import, 2 first fluid outlets, 3 second fluid imports, 4 second fluid outlets, 5 end plates, 6 end plates, 7 flow manifolds, 8 flow seal grooves, 9 flow seal pads, 10 heat exchange plates, 11 flow manifolds, 12 flow manifolds, 13 gasket seals, 14 boilers, 15 steam turbines, 16 generators, 17 small pumps, 18 water circulating pumps, 19 vapor-water heat exchangers, 20 CSRC diagnostic systems, 21CO/CO
2content setting and Acquisition Instrument, 22CO/CO
2content measuring instrument, 23 Fan Regulation valves, 24 blower fans, 25 fuel flow rate control and regulation devices, 26 Fuel lances, 27 exit flues, 28 sealed grooves, 29 is protruding, and 30 is protruding, 31 openings; 32 drums, 33 afterheat heat exchangers, 34 flowmeters, 35 pressure gauges, 36 thermometers, 37 Water Test Kits, 38 adjustment mechanism for valve, 39 blowoff valves, 40 valves, 41 adjustment mechanism for valve, 42 flowmeters
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
Herein, if do not have specified otherwise, relate to formula, "/" represents division, "×", " * " represent multiplication.
A kind of boiler thermodynamic system, described boiler thermodynamic system comprises multiple stage boiler 14, and for generation of steam, described multiple stage boiler 14 carries out data cube computation with CSRC diagnostic system 20 respectively, to monitor the operation of boiler.
By the operation monitoring automated system of all boilers is incorporated into an automatically-monitored platform of Centralized Monitoring, i.e. CSRC diagnostic system 20, this platform can realize monitoring the automatic online of the various parameters of all boilers, solves the island of automation problem that existing boiler operatiopn exists.
Further, as shown in Figure 1, described boiler thermodynamic system comprises boiler 14, steam turbine 15, generator 16, vapor-water heat exchanger 19, the steam that boiler 14 produces, by steam turbine 15, is then generated electricity by generator 16, simultaneously, exhaust steam after generating enters vapor-water heat exchanger 19, and carry out heat exchange with the low-temperature receiver that comes in vapor-water heat exchanger 19, the condensed water of exhaust steam loops back boiler 14 by circulating pump 18.
As preferably, described boiler 14 has multiple, and accordingly, most circulating pumps 18 also has multiple.
As preferably, described vapor-water heat exchanger 19 has multiple, and described vapor-water heat exchanger 19 is multiple series connection or parallel-connection structure.
Described CSRC diagnostic system 20 carries out data cube computation, to monitor the operation of boiler and steam turbine with boiler 14 and steam turbine 15.
Fig. 1 just illustrates a boiler 14 and is connected with CSRC diagnostic system 20, and in fact, all boilers 14 are all connected with CSRC diagnostic system 20, because simplify reason, so all do not illustrate in the drawings.
Generating automated system of the operation monitoring Department of Automation of all boilers being unified is incorporated into an automatically-monitored platform of Centralized Monitoring, i.e. CSRC diagnostic system 20, this platform can realize, to the automatic online monitoring of the various parameters of all boilers and steam turbine, solving the island of automation problem that existing boiler generator operation exists.
Certainly, described boiler thermodynamic system also comprises water charging system, does not illustrate in accompanying drawing 1.
As preferably, as shown in Figure 2, described boiler 14 automatic system for monitoring comprises boiler combustion automatic system for monitoring, mainly comprises CO/CO
2content setting and Acquisition Instrument 21, CO/CO
2the control and regulation of content measuring instrument 22, Fan Regulation valve 23, blower fan 24, fuel flow rate device 25, Fuel lance 26.Described Fuel lance 26 one end connects boiler, adds fuel toward boiler furnace, and the other end connects fuel flow rate control and regulation device 25, described control and regulation device 25 and CSRC diagnostic system 20 data cube computation.Described blower fan 24 one end is connected with boiler, and be responsible for burner hearth blowing-in and combustion-supporting, one end is connected with Fan Regulation valve 23, and described Fan Regulation valve regulation enters the air quantity of blower fan, and described Fan Regulation valve 23 carries out data cube computation with CSRC diagnostic system 20.Described CO/CO
2content measuring instrument 22 is arranged in the exit flue 27 of boiler 14, for measuring CO and CO in flue gas
2content, described CO/CO
2content setting is connected CO/CO with Acquisition Instrument 21 one end
2content measuring instrument 22, the other end and CSRC diagnostic system 20 carry out data cube computation.Described CO/CO
2content setting and Acquisition Instrument 21 are for gathering CO/CO
2content data and setting data.
The monitor procedure of boiler combustion automatic system for monitoring is as follows:
During boiler combustion, unit interval combustion release CO volume content is V1, unit interval combustion release CO during burning
2volume content is V2.At CO/CO
2content sets and sets V1 when boiler normally runs in Acquisition Instrument 21
settingand V2
setting.In actual boiler running process, CSRC diagnostic system can according to CO/CO
2the data that content setting and Acquisition Instrument 21 gather control the fuel quantity of ventilation and conveying automatically.
Certainly, as preferably, also V1 can be set at CSRC diagnostic system 20
settingand V2
setting.
For the adjustment of CO content, if the content V1 of the CO measured
measure> V1
setting, then show that ventilation is inadequate, therefore CSRC diagnostic system can pass to Fan Regulation valve by increasing the instruction of ventilating, and increases air output by the aperture increasing Fan Regulation valve 23, if the V1 of the CO measured
measure< V1
setting, and the CO measured
2content V2
measure< V2
setting, then show that ventilation is too much, therefore CSRC diagnostic system can pass to Fan Regulation valve 23 by reducing the instruction of ventilating, and reduces air output by the aperture reducing Fan Regulation valve 23.
Certainly, alternatively, if the content V1 of the CO measured
measure> V1
setting, then show that fuel quantity is too much, therefore the instruction reducing fuel quantity can be passed to fuel flow rate control and regulation device 25 by CSRC diagnostic system, reduces fuel quantity, if the V1 of the CO measured by fuel flow rate control and regulation device 25
measure< V1
setting, and the CO measured
2content V2
measure< V2
setting, then show that fuel quantity is very few, therefore CSRC diagnostic system can pass to fuel flow rate control and regulation device 25 by increasing the instruction of fuel quantity, reduces fuel flow rate by fuel flow rate control and regulation device 25.
Certainly, to the adjustment of CO content, as preferably, above-mentioned two kinds of regulative modes can be used, to accelerate governing speed simultaneously.
For CO
2the adjustment of content, if the CO measured
2content V2
measure< V2
setting, show undercharge, therefore CSRC diagnostic system 20 can pass to fuel flow rate control and regulation device 25 by increasing the instruction of fuel quantity, reduces fuel flow rate by fuel flow rate control and regulation device 25.
For CO
2the adjustment of content is preferentially carry out when the content of CO meets setting value.
As preferably, if the CO measured
2content V2
measure< V2
setting, then show that ventilation is too much, therefore CSRC diagnostic system can pass to Fan Regulation valve 23 by reducing the instruction of ventilating, and reduces air output by the aperture reducing Fan Regulation valve 23.
Certainly, to CO
2above-mentioned two kinds of regulative modes, as preferably, can be used, to accelerate governing speed by the adjustment of content simultaneously.
As preferably, V1
settingand V2
settingit is a continuous print number range.I.e. V1
measure, V2
survey amountas long as in number range, even if meet the demands.
As preferably, can to CO, CO
2in each independently carry out Automated condtrol, such as only control CO or only control CO
2, or both control.
As preferably, the upper limit of CO and/or the alert data of lower limit and/or CO are set in CSRC diagnostic system 20
2lower limit alert data.Once exceed the data of the upper limit or lower limit, CSRC diagnostic system 20 has just sent alarm signal.This kind of situation shows to lose efficacy for the control of air output and fuel delivery, and possible boiler operatiopn goes wrong, and needs to overhaul at once.
As preferably, CO/CO in described flue gas
2content detection instrument adopts moral figure testo350Pro analytical instrument, and resistance to extreme temperature up to 500 DEG C, thus meets pyrometric requirement.
As preferably, each boiler develops steam vapor amount, steam pressure and vapor (steam) temperature, pressure fan airflow pressure, air-introduced machine airflow pressure, power of motor, boiler replenishing water amount, the information data transmission such as fire box temperature, to CSRC diagnostic system 20, realize the real time on-line monitoring of all boiler operation emphasis parameters
As preferably, described generating automated system comprises and regulates pressure and power output before the machine of described steam turbine according to generation load.
As preferably, described generating automated system comprises air output and the fuel quantity that the generation load collected regulates boiler, regulates the pushing quantity of boiler simultaneously.
As shown in Figure 3, CSRC diagnostic system gathers the output load of generator 16 to described generating automated system.As preferably, output load shows in real time.If need to increase output load, then CSRC diagnostic system sends instruction, increases air output and fuel quantity simultaneously, increase rate of water make-up simultaneously by the transmission power of small pump 17 by Fan Regulation valve 23 and fuel flow rate control and regulation device 25.Certainly, as preferably, also can increase by the increase of pump 18 power the quantity of circulating water entering boiler.Certain conduct is preferred, can increase power simultaneously accelerate regulating time by small pump 17 and water circulating pump 18.
If need to reduce output load, then CSRC diagnostic system 20 sends instruction, reduces air output and fuel quantity simultaneously, reduce rate of water make-up simultaneously by the transmission power of small pump 17 by Fan Regulation valve 23 and fuel flow rate control and regulation device 25.Certainly, also can reduce by pump 18 power reduction the quantity of circulating water entering boiler.Certain conduct is preferred, can reduce power simultaneously accelerate regulating time by small pump 17 and water circulating pump 18.
As preferably, if need to increase output load, then CSRC diagnostic system sends instruction, increases pressure and power output before the machine of described steam turbine.If need to reduce output load, then CSRC diagnostic system sends instruction, reduces pressure and power output before the machine of described steam turbine.
By above-mentioned Based Intelligent Control, the intelligent power generation of boiler can be realized, make boiler combustion and generator operation automation, improve the efficiency of monitoring.
Certainly, Fig. 3 is a schematic diagram, illustrate only small pump 17, and miscellaneous part shows in Fig. 1,2, this has been omission, and those skilled in the art record according to Fig. 1-3 can understand in conjunction with description.
As preferably, as shown in figure 13, described every platform boiler also comprises automatic control of sewage disposal system, and the water yield of the quantity of steam that described automatic control of sewage disposal system produces according to boiler and input boiler controls automatically.If the ratio between the water yield of quantity of steam and input boiler is less than lower numerical limit, then CSRC diagnostic system 20 controls to reduce blowdown flow rate automatically.If the ratio between the water yield of quantity of steam and input boiler is greater than limit value, then CSRC diagnostic system 20 controls to increase blowdown flow rate automatically.Concrete control system is as follows:
As shown in figure 13, described boiler comprises the flowmeter 34 be arranged on steam (vapor) outlet pipeline, pressure gauge 35 and thermometer 36, for measuring the flow velocity, the pressure and temperature that export steam.Described flowmeter 34, pressure gauge 35 and thermometer 36 carry out data cube computation with CSRC diagnostic system 20 respectively, the data of measurement are passed to CSRC diagnostic system 20, according to vapor (steam) temperature, pressure, the quality of steam of flow relocity calculation unit interval measured in central monitoring system.
Described boiler comprises the blow-off pipe being arranged on boiler-steam dome 32 lower end, blow-off pipe is arranged blowoff valve 39, blowoff valve 39 one end connects adjustment mechanism for valve 38, adjustment mechanism for valve 38 and CSRC diagnostic system 20 carry out data cube computation, valve opening data are passed to CSRC diagnostic system 20, accept instruction from central monitoring and diagnosis system 20 simultaneously, regulate the aperture of blowoff valve 39.
Described blow-off pipe comprises flowmeter 41 further, measures the flow of blowdown.Described flowmeter 41 carries out data cube computation, data are passed to CSRC diagnostic system 20 with CSRC diagnostic system 20.CSRC diagnostic system 20 calculates the blowdown flow rate of unit interval according to flowmeter.
The water inlet manifold of described boiler arranges flowmeter, for detecting the flow entered in boiler, described flowmeter and CSRC diagnostic system 20 carry out data cube computation, the data of measurement are passed to CSRC diagnostic system 20, CSRC diagnostic system 20 enters the flow of the water of boiler according to the flow rate calculation unit interval of measuring.
Certainly, the water entering boiler is the water yield summation of circulating water pipe and filling pipe.As preferably, the flowmeter with CSRC diagnostic system 20 data cube computation can be set respectively on filling pipe and circulating water pipe, by flow sum both calculating, thus the unit of account time enter the total water yield of boiler.The present invention can adopt various control strategy to carry out control of sewage disposal amount.
A preferred control strategy is: the quality of steam that CSRC diagnostic system 20 calculates is less than lower limit with the ratio of the quality of the water of input boiler, then show that blowdown rate is too high, therefore CSRC diagnostic system 20 turns the aperture of blowoff valve 39 automatically down by adjustment mechanism for valve 38.By aforesaid operations, blowdown can be avoided excessive, cause the waste of the energy.If quality of steam is greater than higher limit with the ratio of the quality of the water of input boiler, then shows that blowdown rate is too low, may affect the life-span of boiler, then CSRC diagnostic system 20 improves the aperture of blowoff valve 39 automatically by adjustment mechanism for valve 38.
As preferably, if when the aperture of blowoff valve 39 is maximum, quality of steam is still less than lower limit with the ratio of the quality of the water of input boiler, then system can give a warning, and whether prompting drainage breaks down.
As preferably, if when the closedown of blowoff valve 39, quality of steam is still greater than higher limit with the ratio of the quality of the water of input boiler, then system can give a warning, and whether prompting drainage breaks down.
Preferred control strategy is that the quality of the water of the blowdown that CSRC diagnostic system 20 is detected by flowmeter 41 exceedes with the ratio of the quality of the water of input boiler and prescribes a time limit, then show that blowdown flow rate is excessive, therefore CSRC diagnostic system 20 turns the aperture of blowoff valve 39 automatically down by adjustment mechanism for valve 38.If the quality of the water of the blowdown detected exceedes lower prescribing a time limit with the ratio of the quality of the water of input boiler, then show that blowdown flow rate is too small, therefore CSRC diagnostic system 20 tunes up the aperture of blowoff valve 39 automatically by adjustment mechanism for valve 38.By such setting, avoid the water quality in drum too poor, in order to avoid cause the corrosion of boiler-steam dome.
A preference policy, described drum 32 also comprises Water Test Kits 37, to measure the water quality in drum.Described Water Test Kits 37 carries out data cube computation with CSRC diagnostic system 20, to accept the data measured, the data according to measuring carry out aperture control to blowoff valve 39.If the tables of data open fire matter measured is excessively poor, such as a certain index exceeds the data upper limit, then need to carry out timely blowdown, and therefore CSRC diagnostic system 20 tunes up the aperture of blowoff valve 39 automatically by adjustment mechanism for valve 38.If the tables of data open fire matter measured is good, then CSRC diagnostic system 20 turns the aperture of blowoff valve 39 automatically down by adjustment mechanism for valve 38.Even blowoff valve can be closed in necessary situation.
A preference policy, blow-off line arranges Water Test Kits (not shown), to measure the water quality in blow-off pipe.Described Water Test Kits and CSRC diagnostic system 20 carry out data cube computation, to accept the data measured, the data according to measuring carry out aperture control to blowoff valve.If the tables of data open fire matter measured is excessively poor, such as a certain index exceeds the data upper limit, then needing increases blowdown flow rate, and therefore CSRC diagnostic system 20 tunes up the aperture of blowoff valve 39 automatically by adjustment mechanism for valve 38.If the tables of data open fire matter measured is good, then CSRC diagnostic system 20 turns the aperture of blowoff valve 39 automatically down by adjustment mechanism for valve 38.Even blowoff valve can be closed in necessary situation.
As preferably, described blow-off line connects waste heat utilization heat exchanger 33, described waste heat utilization heat exchanger 33, to make full use of the heat of sewage.The low-temperature receiver inlet tube of heat exchanger 33 arranges valve 40, described valve 40 is connected with adjustment mechanism for valve 41, adjustment mechanism for valve 41 and CSRC diagnostic system 20 carry out data cube computation, the aperture data of valve 40 are passed to CSRC diagnostic system 20 and accepts the instruction of CSRC diagnostic system 20 simultaneously.If the blowdown flow rate that CSRC diagnostic system 20 is measured increases, then CSRC diagnostic system 20 increases the aperture of valve 0 by adjustment mechanism for valve 41, to increase the low-temperature receiver amount entering heat exchanger 33, the temperature constant of the low-temperature receiver keeping heat exchanger 33 to export, avoids low-temperature receiver overheated simultaneously.If the blowdown flow rate that CSRC diagnostic system 20 is measured reduces, then CSRC diagnostic system 20 reduces the aperture of valve 0 by adjustment mechanism for valve 41, to reduce the low-temperature receiver amount entering heat exchanger 33, the temperature constant of the low-temperature receiver keeping heat exchanger 33 to export, avoids low-temperature receiver heating effect too poor simultaneously.As preferably, described heat exchanger 33 can arrange multiple.
As preference policy, CSRC diagnostic system 20 can calculate the water loss of boiler by calculation of steam quality and blowdown quality sum with the ratio of the quality of the water of input boiler.If the water loss calculated exceedes the upper limit, CSRC diagnostic system 20 sends alarm.
As preference policy, arrange water-level gauge (not shown) in drum 32, described water-level gauge and CSRC diagnostic system 20 carry out data cube computation, measurement data is passed to CSRC diagnostic system 20.CSRC diagnostic system 20 according to the height of water level change of the data unit of account time of measuring, thus calculates the mass change of the water unit interval in drum 32.CSRC diagnostic system 20 regulates the aperture of blowoff valve 39 according to quantity of steam, the water yield of boiler input and the change of the drum water yield.If the quality of steam that CSRC diagnostic system 20 calculates adds that the mass change sum of boiler-steam dome 32 water is less than lower limit with the ratio of the quality of the water of input boiler lower than certain numerical value, then show that blowdown rate is too high, therefore CSRC diagnostic system 20 turns the aperture of blowoff valve 39 automatically down by adjustment mechanism for valve 38.By aforesaid operations, blowdown can be avoided excessive, cause the waste of the energy.Detecting by increasing steam water-level, further increasing the accurate of the data of measurement.
As preference policy, CSRC diagnostic system 20 can calculate the water loss of boiler by the variable quality of calculation of steam quality, drum water and blowdown quality three sum with the ratio of the quality of the water of input boiler.If the water loss calculated exceedes the upper limit, CSRC diagnostic system 20 sends alarm.
As preferably, arrange and measure the temperature of water and the device of drum pressure in drum, described device and CSRC diagnostic system 20 data cube computation, CSRC diagnostic system 20 calculates the mass change of water in drum according to the temperature and pressure measured.Calculated the quality of water by temperature and pressure, make result more accurate.
As preferably, the device measuring vapor (steam) temperature and pressure is set in drum, described device and CSRC diagnostic system 20 data cube computation, CSRC diagnostic system 20, according to the temperature and pressure measured and drum middle water level height, calculates the quality of steam in drum.Like this, in calculating above, carry out the aperture of control of sewage disposal valve according to conjunction and the size of the ratio of the quality of the water of input boiler of the mass change three of water in the mass change of steam in drum, the quality exporting steam and drum.Make result of calculation more accurate like this.
Equally, also need when calculating the loss of water that the mass change of water in the mass change of steam in drum, the quality exporting steam and drum and blowdown flow rate sum and boiler are inputted the water yield to contrast.
As preferably, can on blow-off pipe set temperature meter, CSRC diagnostic system 20 is according to the quality of the water of the water temperature of blowdown, the composition of water and the blowdown of flow relocity calculation unit interval.
As preferably, in CSRC diagnostic system 20, prestore the temperature, pressure of steam and the relation data of density, so that calculation of steam quality.Also can prestore temperature and the density relationship data of water, calculate the quality of water in drum.Relation for the temperature of sewage, composition and density also prestores in lower CSRC diagnostic system 20.
As preferably, the quality of steam of CSRC diagnostic system 20 according to the output obtained and the fuel quantity of input, the ton steam consumption fuel quantity parameter of Real-Time Monitoring boiler, the running status of real-time diagnosis boiler, make boiler remain Effec-tive Function, avoid the energy waste caused under boiler efficiency.
Boiler ton steam consumption fuel quantity SF is defined as the steam gross mass S of boiler a period of time generation
gross massdivided by the fuel gross mass F inputted in this period of boiler
gross mass, obtain a ton index for steam consumption fuel quantity.I.e. SF=S
gross mass/ F
gross mass.
If boiler ton steam consumption fuel quantity is excessive, then shows that boiler efficiency is low, need to carry out examination and maintenance.
Boiler ton steam consumption fuel quantity can dynamically update, and always accumulates for the previous period, such as, can be minute, second, hour etc., and preferably the data of 5 minutes show in CSRC diagnostic system 20 as result of calculation, and can draw out trend curve.
By the ton steam consumption fuel quantity parameter of Real-Time Monitoring boiler, the parameter of boiler during SF maximum can be drawn, such as include, but are not limited in the parameters such as subsidiary engine power consumption, fuel input quality, steam input quality, air-introduced machine frequency, pressure fan frequency, circulating pump frequency one of at least.Thus boiler can be made in running to run under the above parameters, make SF reach maximum, thus reach fuel-saving object.
As preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferably, fuel is coal.
As preferably, CSRC diagnostic system 20 also carries out data cube computation with power information, to obtain the power consumption of the subsidiary engine of steam generator system in time.CSRC diagnostic system 20 is according to the quality of steam of the output obtained and power consumption, the ton steam consumption electrical parameter of the every platform boiler of Real-Time Monitoring, the running status of real-time diagnosis boiler, makes boiler remain Effec-tive Function, avoids the energy waste caused under boiler efficiency.
Described subsidiary engine preferably includes as follows: the subsidiary engine equipment such as boiler blower, air-introduced machine, fire grate, boiler replenishing water pump.
Boiler ton steam consumption electricity SE is defined as the steam gross mass S of boiler a period of time generation
always qualitydivided by the summation E of subsidiary engine power consumption all in this period of boiler
power consumption, obtain a ton index for steam consumption electricity.I.e. SE=S
gross mass/ E
power consumption.
If boiler ton steam consumption electricity is excessive, then shows that boiler efficiency is low, need to carry out examination and maintenance.
Boiler ton steam consumption electricity can dynamically update, and always accumulates for the previous period, such as, can be minute, second, hour etc., and preferably the data of 5 minutes show as result of calculation, and can draw out trend curve.
As preferably, by the ton steam consumption electrical parameter of Real-Time Monitoring boiler, the parameter of boiler during SE maximum can be drawn, such as include, but are not limited in the parameters such as subsidiary engine power consumption, fuel input quality, steam input quality, air-introduced machine frequency, pressure fan frequency, circulating pump frequency one of at least.Thus boiler can be made in running to run under the above parameters, make SE reach maximum, thus reach the object of saving electricity.
As preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferably, by the ton steam consumption fuel quantity of Real-Time Monitoring parallel boiler and/or the parameter of ton steam consumption electricity, realize analyzing mark to the boiler of paired running, all the time the higher boiler of SE and/or SF is made to be in peak load state, the boiler Timeliness coverage problem that SE and/or SF is low also solves as early as possible, makes the boiler of operation keep efficient all the time.
As preferably, by analyzing ton vapour coal consumption and/or the ton steam consumption electricity index to marking every platform boiler, analyzing and judging to increase its operating load by the boiler that SE and/or SF is higher; And for the relatively low boiler of SE and/or SF, reduce its operating load, if boiler SE and/or SF is lower than normal operating experience data, then need shutdown maintenance as early as possible, put into operation as early as possible again after improving its thermal efficiency.
As preferably, certainly, also can judge to increase its operating load by the boiler that SE and/or SF is higher by Manual analysis; And for the relatively low boiler of SE and/or SF, reduce its operating load, if boiler SE and/or SF is lower than lower limit, then need shutdown maintenance as early as possible, put into operation as early as possible again after improving itself SE and/or SF.
As preferably, by the boiler the most as a whole consideration ton steam consumption fuel quantity SF by multiple stage paired running
aLLsize.Boiler gross ton steam consumption fuel quantity SF
aLLbe defined as the steam gross mass S of generation of all boiler a period of times
gross mass alldivided by the fuel gross mass F inputted in this period of all boilers
gross mass all, obtain the index of gross ton steam consumption fuel quantity.I.e. SF
aLL=S
gross mass all/ F
always quality all.
Boiler gross ton steam consumption fuel quantity parameter can dynamically update, and always accumulates for the previous period, and preferably the data of 5 minutes show as result of calculation, and can draw out trend curve.
As preferably, by the SF of Real-Time Monitoring boiler
aLLparameter, can draw SF
aLLthe parameter of every platform boiler during maximum, such as include, but are not limited in the parameters such as the subsidiary engine power consumption of every platform boiler, fuel input quality, steam input quality, air-introduced machine frequency, pressure fan frequency, circulating pump frequency one of at least.Thus boiler in parallel can be made in running to run under the above parameters, make SF
aLLreach maximum, thus reach the object of economizing on the use of funds.
As preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferably, by the boiler the most as a whole consideration ton steam consumption electricity SE by multiple stage paired running
aLLsize.Boiler gross ton steam consumption electricity SE
aLLbe defined as the steam gross mass S of generation of all boiler a period of times
gross mass alldivided by all subsidiary engine power consumption E inputted in this period of all boilers
gross mass all, obtain the index of gross ton steam consumption fuel quantity.I.e. SE
aLL=S
gross mass all/ E
always electricityamount
all.
Boiler SE
aLLparameter can dynamically update, and always accumulates for the previous period, and preferably the data of 5 minutes show as result of calculation, and can draw out trend curve.
As preferably, by the SE of Real-Time Monitoring boiler
aLLparameter, can draw SE
aLLthe parameter of every platform boiler during maximum, such as include, but are not limited in the parameters such as the subsidiary engine power consumption of every platform boiler, fuel input quality, steam input quality, air-introduced machine frequency, pressure fan frequency, circulating pump frequency one of at least.Thus boiler in parallel can be made in running to run under the above parameters, make SE
aLLreach maximum, thus reach the object of economizing on the use of funds.
As preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferably, ton steam consumption fuel quantity can be considered together with ton steam consumption electricity.Subsidiary engine power consumption spent by being run boiler a period of time and the fuel of input are converted to price respectively, and the price of both is added, obtain total price, the steam total amount then produced with this period of time, divided by above-mentioned total price, obtains the index that ton vapour is worth SEF.I.e. SEF=S
gross mass/ (F
gross mass* F
unit price+ E
power consumption* E
unit price), wherein F
unit price, E
unit pricethe price of the price of per unit fuel, per unit electricity respectively.As preferably, the unit of fuel can be volume or mass unit, and the unit of electricity can be kilowatt hour.
The ton vapour value parameter of the every platform boiler of CSRC diagnostic system 20 Real-Time Monitoring, the running status of real-time diagnosis boiler, makes boiler remain Effec-tive Function, avoids the energy waste caused under boiler efficiency.
If boiler ton vapour is worth too small, then shows that boiler efficiency is low, need to carry out examination and maintenance.Preferably, be less than lower limit, CSRC diagnostic system 20 sends warning.Remind the need of examination and maintenance.
Boiler ton vapour value parameter can dynamically update, and always accumulates for the previous period, and preferably the data of 5 minutes show as result of calculation, and can draw out trend curve.
As preferably, by the ton vapour value parameter of Real-Time Monitoring boiler, the parameter of boiler during SEF maximum can be drawn, such as include, but are not limited in the parameters such as subsidiary engine power consumption, fuel input quality, steam input quality, air-introduced machine frequency, pressure fan frequency, circulating pump frequency one of at least.Thus boiler can be made in running to run under the above parameters, make SEF reach maximum, thus reach the object of economizing on the use of funds.
As preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferably, by the steam consumption value parameter of Real-Time Monitoring parallel boiler, realize analyzing mark to the boiler of paired running, make the highest boiler of SEF be in peak load state all the time, the boiler Timeliness coverage problem that SEF is low also solves as early as possible, makes the boiler of operation keep efficient all the time.
As preferably, by analyzing the steam consumption value parameter index to the every platform boiler of mark, analyzing and judging to increase its operating load by the boiler that SEF is higher; And for the relatively low boiler of SEF, reduce its operating load, if boiler SEF is lower than normal operating experience data, then need shutdown maintenance as early as possible, put into operation as early as possible again after improving its thermal efficiency.
As preferably, certainly, also can judge to increase its operating load by the boiler that SEF is higher by Manual analysis; And for the relatively low boiler of SEF, reduce its operating load, if boiler SEF is lower than lower limit, then need shutdown maintenance as early as possible, put into operation as early as possible again after improving its thermal efficiency.
As preferably, by the boiler the most as a whole consideration gross ton vapour of multiple stage paired running is worth SEF
aLLsize.Subsidiary engine power consumption total amount spent by running by all boiler a period of times and the total amount of fuel of input are converted to price respectively, and the price of both are added, and obtain total price, then by all for this period of time boiler develops steam vapor gross mass S
gross mass ALLdivided by above-mentioned total price, obtain ton vapour and be worth SEF
aLLindex.I.e. SEF
aLL=S
gross mass ALL/ (F
total matter amount all* F
unit price+ E
power consumption all* E
unit price), F
gross mass all, E
power consumption allrepresent that total fuel quantity that all boilers input and subsidiary engine expend total electricity respectively.
Boiler gross ton vapour value parameter can dynamically update, and always accumulates for the previous period, and preferably the data of 5 minutes show as result of calculation, and can draw out trend curve.
As preferably, by the gross ton vapour value parameter of Real-Time Monitoring boiler, SEF can be drawn
aLLthe parameter of every platform boiler during maximum, such as include, but are not limited in the parameters such as the subsidiary engine power consumption of every platform boiler, fuel input quality, steam input quality, air-introduced machine frequency, pressure fan frequency, circulating pump frequency one of at least.Thus boiler in parallel can be made in running to run under the above parameters, make SEF
aLLreach maximum, thus reach the object of economizing on the use of funds.
As preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferably, described vapor-water heat exchanger and waste heat utilization heat exchanger are plate type heat exchanger.Plate type heat exchanger adopts following structure:
Described plate type heat exchanger comprises heat exchange plate 10, gasket seal 13, gasket seal 13 is between adjacent heat exchange plate 10, described gasket seal 13 is arranged in the sealed groove 28 of heat exchange plate 10 periphery, described sealed groove 28 is trapezium structure, the both sides up and down of described trapezium structure are parallel limit, top is minor face, be long limit below, the minor face position on two parallel limits of described trapezium structure arranges opening 31, described gasket seal 13 is the trapezium structure of working in coordination with sealed groove, described gasket seal 13 is put in sealed groove 28 from opening 31.
By arranging the sealed groove of trapezium structure and gasket seal corresponding with it, sealed groove and gasket seal being entrenched togather tightly can be made, avoid using adhesive, add the fastness of sealing.
As preferably, described trapezium structure is isosceles trapezoidal structure.
As preferably, described sealed groove 28 arranges protruding 29 in the inside on two limits, left and right, corresponding with it, the outer setting on two limits, left and right of the trapezium structure of gasket seal 13 and protruding 29 corresponding recesses.By said structure, what sealed groove and gasket seal were fitted together to is more firm, and sealing effectiveness is better.
As preferably, described sealed groove 28 arranges protruding 30 in the inside on the limit of bottom, corresponding with it, the outer setting on the limit of the bottom of the trapezium structure of gasket seal 13 and protruding 30 corresponding recesses.By said structure, what sealed groove and gasket seal were fitted together to is more firm, and sealing effectiveness is better.
As preferably, protruding 29 be triangle, and projection 30 is rectangle.
As preferably, described protruding 29 often arrange respectively multiple, individual as being preferably 3-5.
As preferably, the lower edge of triangular hill 29 is parallel with the limit of trapezoidal bottom.By such setting, can make that gasket seal 13 is installed and be more prone to, easy for installation.
As preferably, the angle on limit, two, trapezoidal left and right and long limit (i.e. the limit of bottom) is 40-70 °, is preferably 50-60 °.Length between trapezoidal height and minor face is 1:(2-4), be preferably 1:3.Such angle and length are set, the fastness be fitted together to will be considered on the one hand, the convenience installed will be considered on the one hand.Angle is less, highly higher, then install more difficult, but chimeric fastness is good, good sealing effect.Otherwise angle is larger, highly lower, then it is easier to install, but chimeric fastness is poor, and sealing effectiveness is poor.Above-mentioned angle and height are the effects considering the optimum obtained considering that installation convenience and chimeric fastness are carried out.
Generally, the cross-sectional area of plate-type heat exchanger slab both sides cold and hot fluid passage is that equal (Fig. 6 a).In such cases, if the flow of two kinds of fluids (referring to volume flow) is more or less the same, now the runner of same fluid can take the mode of parallel connection parallel to each other, as Fig. 6 a, now the coefficient of heat transfer of plate type heat exchanger two side liquid is more or less the same, and the whole heat exchanger coefficient of heat transfer is very high, and arrange like this can also make two kinds of fluids import and export all on an end plate 5, as shown in Figure 6 b, what be conducive to plate type heat exchanger disassembles maintenance and plate cleaning.If but when two kinds of larger fluids of flow difference carry out heat exchange, if two kinds of fluids all take fluid passage in parallel, then there will be too low compared with the flow velocity of low discharge, thus cause the lower coefficient of heat transfer.Therefore usual form low-flow fluid channel setting being become series connection, as shown in Figure 7a, so just cannot four of a cold fluid and hot fluid import and export be all arranged on an end plate, can only be arranged on two end plates 5,6, as shown in Figure 7b, two end plates all arrange fluid inlet and outlet connectors, when heat exchanger is in connection status with pipeline, plate type heat exchanger will dismantle difficulty, need two ends to dismantle, and cause maintenance inconvenience.
Following structure taked by plate type heat exchanger of the present invention, to adapt to vapour-liquid heat exchange.
As preferably, in the heat exchange plate 10 that described flow is little, at least one by-passing parts is set, the flow path of the heat exchanging fluid flowing through heat exchange plate is divided at least two points of Cheng Liudao 7 by described by-passing parts, and point Cheng Liudao 7 in described heat exchange plate 10 is cascaded structure.By the cascaded structure of above-mentioned point Cheng Liudao 7, make fluid therefore through all point Cheng Liudao 7, as shown in Figure 6, thus make heat exchanging fluid on heat exchange plate 10, form S shape runner.
By arranging by-passing parts, the fluid making flow little can be full of whole heat exchange plate, thus avoids the heat exchange area occurring some fluid short circuits, thus adds the coefficient of heat transfer, improves the coefficient of heat transfer of whole heat exchanger; In addition, by arranging by-passing parts, make the fluid of low discharge also can realize the parallel connection of the fluid passage in multiple plate, as shown in Figure 6 a, avoid the structure of little fluid channel setting for the series connection shown in Fig. 7 a to improve the coefficient of heat transfer, thus four of fluid import and export 1-4 can be made all to be arranged on same end plate, thus make easy to maintenance.
As preferably, the volume flow of large flow fluid is more than 2 times of the volume flow of low discharge fluid.
For vapor-water heat exchanger, as preferably, the plate of side, water source arranges by-passing parts.
As preferably, by-passing parts is realized by seal groove 8 and sealing gasket 9, and described seal groove 8 is arranged on heat exchange plate, by being inserted in seal groove 8 by sealing gasket 9, thus forms by-passing parts.
As preferably, by-passing parts is by directly arranging sealing strip to realize on heat exchange plate.As preferably, sealing strip and heat exchange plate integration manufacture.
On the fluid inlet of heat exchange plate and the two ends up and down of outlet, i.e. the two ends up and down of Fig. 3, by-passing parts is at one end closed, at the other end, opening is set, wherein along left and right directions, aperture position is disposed alternately at upper and lower two ends, ensures that fluid passage forms S shape like this.
Direction up and down mentioned before note that and is below not limited in using state be direction up and down, is only used to the structure of the plate of stating in Fig. 8 herein.
Plate described in Fig. 8,11 is because be provided with two by-passing parts, and therefore the import and export of fluid are arranged on top and bottom.Can certainly arrange 1 or odd number by-passing parts, the import and export position of fluid is now located on same one end, is namely positioned at upper end or lower end simultaneously.
Foregoing S shape runner can be half S shape, the situation of a by-passing parts is such as only set, also can be whole S shape, such as Fig. 8,11 form, also can be the combination of multiple S shapes and/or half S shape, such as, arrange the situation of 2 by-passing parts of being greater than, such as 3 by-passing parts be exactly the combination of 1 one S shapes and half S shape, 4 by-passing parts are exactly 2 S shapes, etc. by that analogy.
For adopting the form of sealing gasket, as preferably, the pad integrated design of the setting between sealing gasket and heat exchange plate for plate heat exchanger sheet, therefore present invention provides the pad used between heat exchange plate in plate type heat exchanger in.At least one flow seal pad 9 is set in described pad, the flow path of the heat exchanging fluid flowing through heat exchange plate is divided at least two points of Cheng Liudao 7 by described flow seal pad 9, a point Cheng Liudao 7 in described heat exchange plate 10 is cascaded structure, thus makes heat exchanging fluid on heat exchange plate 10, form S shape runner.
Finding in numerical simulation and experiment, by arranging by-passing parts, the heat exchanger coefficient of heat transfer can be made to increase, but also bring the increase of flow resistance simultaneously.Found by numerical simulation and experiment, for the width of flow manifold, if too small, flow resistance can be caused excessive, the pressure-bearing of heat exchanger is too large, and may produce runner dual-side interlayer and overlap along fluid flow direction, and causes the coefficient of heat transfer to decline, width of flow path is excessive also can cause the coefficient of heat transfer reducing plate type heat exchanger, therefore has a suitable numerical value for split channel 7; Length for by-passing parts opening also has certain requirement, if too small openings, the quantity that fluid can be caused to be flow through by opening is too small, stressedly reduce the coefficient of heat transfer in increasing simultaneously, in like manner, if excessive, then fluid can produce short-circuited region, do not have corresponding heat transfer effect, therefore have a suitable length for opening yet.Therefore between the length, flow manifold width of the Opening length of by-passing parts, by-passing parts, an optimized size relationship is met.
Therefore, the present invention is thousands of numerical simulations by the heat exchanger of multiple different size and test data, meeting in industrial requirements pressure-bearing situation (below 2.5MPa), when realizing maximum heat exchange amount, the dimensionally-optimised relation of the heat exchange plate of the best summed up.
As shown in Figure 7, the Opening length L1 of by-passing parts, the length of by-passing parts is L2, and flow manifold width W, then meet following relational expression:
L1/L＝a－b＊Ln(L1/W)－c＊(L1/W)；
Wherein L=L1+L2;
400 < L < 800mm, 80 < L1 < 140mm, 130 < W < 150mm; Ln is logarithmic function
0.17＜L1/L＜0.22，0.5＜L1/W＜1.1
0.18＜a＜0.21，0.014＜b＜0.016，0.0035＜c＜0.004。
Wherein Opening length is along by-passing parts, from the position that opening occurs along the position farthest reaching fluid passage, as the A point in Fig. 7.
As preferably, a=0.19, b=0.015, c=0.0037;
As preferably, along with the continuous increase of L1/W, the numerical value of a constantly reduces;
As preferably, along with the continuous increase of L1/W, the numerical value of b, c constantly increases.
As preferably, the flow velocity of the fluid of split channel is 0.4-0.8m/s, and preferably, 0.5-0.6m/s, the heat transfer effect taking above-mentioned formula to obtain under this flow velocity is best.
Preferably, the distance between plates 4-6mm of heat exchanging plate of heat exchanger, preferred 5mm.
For the form integrated with pad of the employing sealing gasket in Fig. 9, under also meeting above-mentioned formula situation, heat transfer effect is optimum.
As preferably, multiple by-passing parts is parallel to each other.
As preferably, along the direction (namely far away apart from the fluid intake of heat exchange plate) of fluid flowing, the width W of flow manifolds different on same heat exchange plate constantly reduces.Such as, the width of the flow manifold 7 in Fig. 8 is greater than flow manifold 11, and the width of flow manifold 11 is greater than flow manifold 12.Constantly being reduced by flow manifold width W to make fluid constantly accelerate, and avoids because the fluid caused that is short of power runs slowly.
As preferably, along the direction of fluid flowing, the width W of same flow manifold constantly reduces.Such as, in flow manifold 7, along fluid flow direction (namely Fig. 8 from top to bottom), width W constantly reduces.Now, for the W employing in preceding formula is mean breadth W.
As preferably, on various heat exchange plate, distance heat exchanger fluid entrance is far away, and flow manifold width is less.Mainly distance entrance is far away, then distributing fluids is fewer, makes fluid ensure certain flow velocity by the change of width of flow path.
As preferably, heat exchange plate arranges ripple, and the height of ripple is different.On same plate, along the flow path of fluid, the wave height in same split channel raises gradually, and such as, in flow manifold 7, along fluid flow direction (namely Fig. 8 from top to bottom), wave height raises gradually.
As preferably, flow manifold distance heat exchange plate fluid intake distance is far away, and the height of the ripple in different flow manifold is higher, such as, wave height in flow manifold 7 in Fig. 8 is less than flow manifold 11, and the wave height of flow manifold 11 is less than flow manifold 12.
As preferably, on various heat exchange plate, distance heat exchanger fluid entrance is far away, and wave height is higher.Mainly distance entrance is far away, then distributing fluids is fewer, makes fluid ensure certain flow velocity by the change of wave height.
As preferably, heat exchange plate arranges ripple, and the density of ripple is different.On same plate, along the flow path of fluid, the corrugation density in same split channel becomes large gradually, and such as, in flow manifold 7, along fluid flow direction (namely Fig. 8 from top to bottom), corrugation density becomes large gradually.
As preferably, flow manifold distance heat exchange plate fluid intake distance is far away, and the density of the ripple in different flow manifold becomes greatly.Such as, the corrugation density in the flow manifold 7 in Fig. 8 is less than flow manifold 11, and the corrugation density of flow manifold 11 is less than flow manifold 12
As preferably, on various heat exchange plate, distance heat exchanger fluid entrance is far away, and corrugation density is larger.Mainly distance entrance is far away, then distributing fluids is fewer, makes fluid ensure certain flow velocity by the change of wave height.
As preferably, the amplitude that wave height noted earlier and/or density increase is more and more less.
As preferably, the gasket seal between sealing gasket 9 and/or heat exchange plate adopts elastomeric material.Described elastomeric material is made up of the raw material of following parts by weight: ethylene propylene diene rubber 7-9 part, butadiene-styrene rubber 3-6 part, zinc oxide 6-8 part, white carbon 13-15 part, promoter 4-5 part, blowing agent 2-8 part, naphthenic oil 5-6 part, titanium dioxide 20 parts, natural rubber 50-55 part, Lay mattress falls apart 10-13 part, silicon rubber 15-17 part, 2 parts, carborundum, Melamine 2 parts, 0.6 part to 1.5 parts, age resistor, softening agent 4 parts to 6 parts, vulcanizing agent 2.2 parts to 4 parts.
As preferably, ethylene propylene diene rubber 8 parts, butadiene-styrene rubber 5 parts, 7 parts, zinc oxide, white carbon 14 parts, promoter 4 parts, blowing agent 4 parts, naphthenic oil 6 parts, titanium dioxide 20 parts, natural rubber 52 parts, loose 12 parts of Lay mattress, 16 parts, silicon rubber, 2 parts, carborundum, Melamine 2 parts, 0.9 part, age resistor, softening agent 5 parts, vulcanizing agent 3 parts.
Manufacture method comprises the steps:
A. in banbury, add that described ethylene propylene diene rubber, butadiene-styrene rubber, zinc oxide, white carbon, promoter, blowing agent, naphthenic oil, titanium dioxide, natural rubber, Lay mattress are loose successively, silicon rubber, carborundum, Melamine and promoter and age resistor, then starting banbury, to carry out first time mixing, 70 seconds to 75 seconds time, temperature is 60 DEG C to 70 DEG C;
B. in the banbury of step A, adding softening agent, to carry out second time mixing, and 75 seconds time, temperature is less than 105 DEG C, then cools binder removal;
C. sulfuration: the glue of step B is discharged to and tablet press machine adds vulcanizing agent again turns refining, time 125-140 second, bottom sheet and get final product.
As preferably, promoter is diphenylguanidine.
As preferably, described promoter is dithiocar-bamate; Described age resistor is Tissuemat E; Described softening agent is paraffin; Described vulcanizing agent is curing resin.
Described rubber tool has the following advantages: 1) composite by the material of interpolation zinc oxide, titanium dioxide, resulting materials good springiness, and has certain hardness, and wear-resisting durable, the life-span is long, not easy to wear.2) owing to adopting Tissuemat E as antiaging agent, the persistence of rubber, hardness and abrasion resistance can be improved; 3) cure time is short, makes rubber become the large molecule of space network by the macromolecules cross-linking of linear structure, its anti-tensile of the rubber of output, surely stretch, wear-resisting performance is good.
Figure 10 illustrates the flow channel of the large fluid of flow, and in fact, for the present invention, two kinds of heat exchanging fluids can the little fluid of use traffic.Such as when heat exchange plate is certain, the flow of two kinds of fluids is all very little, and now the flow channel of two kinds of fluids can take the plate of Fig. 8, Figure 11 form.
Although the present invention discloses as above with preferred embodiment, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (4)
1. a boiler thermodynamic system, comprise CSRC diagnostic system and multiple boilers in parallel, each boiler described respectively with CSRC diagnostic system data cube computation, the fuel delivery means of described CSRC diagnostic system and every platform boiler carries out data cube computation, to obtain the fuel input of every platform boiler in time; The power information of described CSRC diagnostic system and every platform boiler carries out data cube computation, to obtain the power consumption of the subsidiary engine of every platform boiler in time, quality of steam, fuel input and power consumption that CSRC diagnostic system exports according to the every platform boiler obtained, the ton steam consumption value parameter of the every platform boiler of Real-Time Monitoring
Described ton vapour is worth the total amount of fuel be defined as the subsidiary engine power consumption spent by the operation of boiler a period of time and input and is converted to price respectively, and the price of both is added, obtain total price, then the steam total amount produced with this period of time is divided by above-mentioned total price, obtain the index that ton vapour is worth, i.e. SEF=S
gross mass/ (F
gross mass* F
unit price+ E
power consumption* E
unit price), wherein F
unit price, E
unit pricebe the price of the price of per unit fuel, per unit electricity respectively, SEF is that ton vapour is worth, F
gross massfuel input, E
power consumptionsubsidiary engine power consumption.
2. boiler thermodynamic system as claimed in claim 1, CSRC diagnostic system, by analyzing the SEF index to the every platform boiler of mark, is analyzed and is judged to increase its operating load by the boiler that SEF is higher; And for the relatively low boiler of SEF, reduce its operating load; If boiler SEF lower than lower limit, then sends alarm.
3. boiler thermodynamic system as claimed in claim 1, comprise steam turbine, generator, vapor-water heat exchanger, the steam that boiler produces is generated electricity by steam turbine drive electrical generators, simultaneously, exhaust steam after generating enters vapor-water heat exchanger, carry out heat exchange with the low-temperature receiver in vapor-water heat exchanger, the condensed water of exhaust steam loops back boiler by circulating pump.
4. boiler thermodynamic system as claimed in claim 3, is characterized in that described vapor-water heat exchanger is plate type heat exchanger.
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| CN201510326000.5A CN104896458B (en) | 2015-07-01 | 2015-07-01 | The steam generator system automatically controlled is carried out based on steam price |
| CN201610417119.8A CN106122921B (en) | 2015-07-01 | 2015-07-01 | The therrmodynamic system of integral monitoring is carried out by economic indicator of steam price |
| CN201610417095.6A CN106051720B (en) | 2015-07-01 | 2015-07-01 | The therrmodynamic system of integral monitoring is carried out as economic indicator with coal consumption |
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| CN106016228A (en) * | 2016-05-20 | 2016-10-12 | 西安交通大学 | Boiler system with operation optimized according to economic value indicators |
| CN108006611A (en) * | 2017-06-05 | 2018-05-08 | 中北大学 | A kind of cloud processing steam boiler drainage of adjustment blowing time |
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| CN112326291B (en) * | 2020-11-05 | 2023-09-01 | 上海电科电机科技有限公司 | Boiler energy efficiency detection method, device, computer equipment and readable storage medium |
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| CN2624160Y (en) * | 2003-06-03 | 2004-07-07 | 广州市华德工业有限公司 | Plate heat exchanger |
| CN201811196U (en) * | 2010-07-23 | 2011-04-27 | 福建省建宁县联丰造纸有限公司 | Auxiliary boiler control device used in grain combustion boiler system |
| CN102997216A (en) * | 2012-12-26 | 2013-03-27 | 北华大学 | Method for determining best setting value of chain furnace control system |
| CN104456514A (en) * | 2015-01-13 | 2015-03-25 | 成都鼎智汇科技有限公司 | Method for detecting abnormal energy consumption of boiler |
-
2015
- 2015-07-01 CN CN201610417095.6A patent/CN106051720B/en active Active
- 2015-07-01 CN CN201510326000.5A patent/CN104896458B/en not_active Expired - Fee Related
- 2015-07-01 CN CN201610417119.8A patent/CN106122921B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2624160Y (en) * | 2003-06-03 | 2004-07-07 | 广州市华德工业有限公司 | Plate heat exchanger |
| CN201811196U (en) * | 2010-07-23 | 2011-04-27 | 福建省建宁县联丰造纸有限公司 | Auxiliary boiler control device used in grain combustion boiler system |
| CN102997216A (en) * | 2012-12-26 | 2013-03-27 | 北华大学 | Method for determining best setting value of chain furnace control system |
| CN104456514A (en) * | 2015-01-13 | 2015-03-25 | 成都鼎智汇科技有限公司 | Method for detecting abnormal energy consumption of boiler |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106016228A (en) * | 2016-05-20 | 2016-10-12 | 西安交通大学 | Boiler system with operation optimized according to economic value indicators |
| CN108006611A (en) * | 2017-06-05 | 2018-05-08 | 中北大学 | A kind of cloud processing steam boiler drainage of adjustment blowing time |
| CN108006611B (en) * | 2017-06-05 | 2019-02-22 | 中北大学 | A kind of cloud processing steam boiler drainage of adjustment blowing time |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106122921B (en) | 2017-09-15 |
| CN104896458B (en) | 2016-08-24 |
| CN106051720B (en) | 2017-06-16 |
| CN106051720A (en) | 2016-10-26 |
| CN106122921A (en) | 2016-11-16 |
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