CN104896456B - The steam generator system of Automated condtrol is carried out based on steam power consumption - Google Patents

The steam generator system of Automated condtrol is carried out based on steam power consumption Download PDF

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Publication number
CN104896456B
CN104896456B CN201510324586.1A CN201510324586A CN104896456B CN 104896456 B CN104896456 B CN 104896456B CN 201510324586 A CN201510324586 A CN 201510324586A CN 104896456 B CN104896456 B CN 104896456B
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boiler
steam
flow
ton
heat exchanger
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CN201510324586.1A
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Chinese (zh)
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CN104896456A (en
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张雪原
赵丽颖
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赵丽颖
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

Abstract

The invention provides a kind of boiler thermodynamic system, including CSRC diagnostic system and multiple boilers in parallel, each described boiler respectively with CSRC diagnostic system data cube computation, the power information of the CSRC diagnostic system and every boiler carries out data cube computation, so as to the power consumption of the subsidiary engine that obtains every boiler in time, quality of steam and power consumption that CSRC diagnostic system is exported according to every obtained boiler, the ton steam consumption electrical parameter of every boiler is monitored in real time, the boiler ton steam consumption electricity is the summation of all subsidiary engine power consumption in this time of steam total amount divided by boiler produced boiler a period of time, obtain a ton index for steam consumption electricity.The present invention can make therrmodynamic system remain Effec-tive Function, it is to avoid energy waste.

Description

The steam generator system of Automated condtrol is carried out based on steam power consumption
Technical field
The invention belongs to field of boilers, belong to F22 fields.
Background technology
In steam boiler running, steam price is a very important index, be weigh boiler whether an important indicator of Effec-tive Function,.But this index is not monitored used at present, therefore propose that new index produces the electric energy of one ton of steam consumption, and by monitoring Boiler Steam power consumption in real time, it is analyzed and processed, judge boiler operatiopn state, Automatic Control of Boiler strategy is and guided, for improving boiler operating efficiency, the energy is saved significant.
The content of the invention
Ton steam consumption electrical parameter of the invention by monitoring every boiler in real time, the running status of real-time diagnosis boiler makes boiler remain Effec-tive Function, it is to avoid the energy waste caused under boiler efficiency.
To achieve these goals, technical scheme is as follows:
A kind of boiler thermodynamic system, including CSRC diagnostic system and multiple boilers in parallel, each described boiler respectively with CSRC diagnostic system data cube computation, the power information of the CSRC diagnostic system and every boiler carries out data cube computation, so as to the power consumption of the subsidiary engine that obtains every boiler in time, quality of steam and power consumption that CSRC diagnostic system is exported according to every obtained boiler, the ton steam consumption electrical parameter of every boiler is monitored in real time, the boiler ton steam consumption electricity is the summation of all subsidiary engine power consumption in this time of steam total amount divided by boiler produced boiler a period of time, obtain a ton index for steam consumption electricity.
It is preferred that, CSRC diagnostic system judges the higher boiler of the thermal efficiency, increases its operating load by analyzing the ton steam consumption electricity index to marking every boiler, analysis;And for the relatively low boiler of the thermal efficiency, reduce its operating load;If boiler thermal output is less than lower limit, alarm is sent.
It is preferred that, the system includes steam turbine, generator, vapor-water heat exchanger, the steam that boiler is produced drives generator to be generated electricity by steam turbine, simultaneously, exhaust steam after generating enters vapor-water heat exchanger, exchanged heat with the low-temperature receiver in vapor-water heat exchanger, the condensed water of exhaust steam circulates back boiler by circulating pump.
It is preferred that, the vapor-water heat exchanger is plate type heat exchanger.
As preferred, the flow that the heat exchanging fluid of heat exchange is participated in the plate type heat exchanger is different, the plate type heat exchanger includes heat exchange plate, at least one by-passing parts is set in the small heat exchange plate of flow, the flow path that the by-passing parts will flow through the heat exchanging fluid of heat exchange plate is divided at least two flow manifolds, by-passing parts set opening so that point Cheng Liudao in described heat exchange plate is cascaded structure, so that the small heat exchanging fluid of flow forms S-shaped runner on heat exchange plate.
Preferably, heat exchange plate sets ripple, the height of ripple is different;On same plate, along the flow path of fluid, the wave height in same split channel gradually rises.
Preferably, the Opening length L1 of by-passing parts, the length of by-passing parts is L2, flow manifold width W, then meets 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
The < L1/W < 1.1 of 0.17 < L1/L < 0.22,0.5
The < c < 0.004 of 0.18 < a <, 0.21,0.014 < b < 0.016,0.0035.
Preferably, along the direction of flow of fluid, the width W of different flow manifolds is constantly reduced on same plate.
Compared with prior art, plate type heat exchanger of the invention and its therrmodynamic system have the following advantages:
1) by monitoring the ton steam consumption fuel quantity of parallel boiler and/or the parameter of ton steam consumption electricity in real time, the boiler of paired running is realized to mark analysis, all the time efficiency highest boiler is made to be in peak load state, the low boiler of efficiency is pinpointed the problems and solved as early as possible in time, the boiler of operation is kept efficient all the time..
2) by monitoring the rate of water make-up of every boiler in real time and producing quantity of steam, obtain rate of water make-up and produce the dynamic relationship of quantity of steam, judge whether boiler blow-out system is working properly, prevent due to the substantial amounts of thermal waste that boiler blow-out system failure is caused.
3) the combustion system DCS and electricity generation system DCS of all boilers of enterprise are incorporated into an automatically-monitored platform of Centralized Monitoring, this platform can realize the tubularpH sensor to the various important parameters of all boilers, and inline diagnosis analysis is carried out to it, the island of automation that existing boiler operatiopn is present is solved the problems, such as, and realizes boiler energy-saving optimization operation.
4) present invention only changes sealing structure to realize the hot and cold unequal demand of side liquid actual internal area with same plate, and the plate type heat exchanger that assembles of these plates is using the assembling form of unilateral adapter, very big installation and maintenance cost can be saved.
5) present invention obtains an optimal heat exchange plate optimum results by test of many times, and by being verified, so as to demonstrate the accuracy of result.
6) the on-line analysis diagnostic system of boiler operatiopn and steam turbine power generation is developed, realizes that boiler energy-saving is run, saves the energy.
Brief description of the drawings
Fig. 1 is boiler thermodynamic system schematic diagram of the present invention;
Fig. 2 is boiler combustion system control schematic diagram of the present invention;
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 view of the present invention;
Fig. 6 is runner plate type heat exchanger schematic diagram in parallel;
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 point journey sheet structure of the present invention;
Fig. 9 is the structural representation of plate type heat exchanger point journey pad of the present invention;
Figure 10 is the sheet structure schematic diagram of the big fluid of plate type heat exchanger flow of the invention;
Figure 11 is the structural representation of plate type heat exchanger point journey plate of the present invention;
Figure 12 is the scale diagrams of Fig. 8 plate type heat exchanger point journey plate;
Figure 13 is the schematic diagram that drainage of the present invention is automatically controlled.
Reference is as follows:
1 first fluid import, the outlet of 2 first fluids, 3 second fluid imports, the outlet of 4 second fluids, 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/CO2Content is set and Acquisition Instrument, 22CO/CO2Content measuring instrument, 23 Fan Regulation valves, 24 blower fans, 25 fuel flow rates control to adjust device, 26 Fuel lances, 27 exit flues, 28 sealed grooves, 29 projections, 30 projections, 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
Embodiment
The embodiment to the present invention is described in detail below in conjunction with the accompanying drawings.
Herein, if without specified otherwise, being related to formula, "/" represents division, and "×", " * " represent multiplication.
A kind of boiler thermodynamic system, the boiler thermodynamic system includes many boilers 14, and for producing steam, many boilers 14 carry out data cube computation with CSRC diagnostic system 20 respectively, so that the operation to boiler is monitored.
By the way that the operation automatic system for monitoring of all boilers is incorporated into an automatically-monitored platform of Centralized Monitoring, that is CSRC diagnostic system 20, this platform can realize the automatic online monitoring to the various parameters of all boilers, solve the problems, such as the island of automation that existing boiler operatiopn is present.
Further, as shown in Figure 1, the boiler thermodynamic system includes boiler 14, then steam turbine 15, generator 16, vapor-water heat exchanger 19, the steam that boiler 14 is produced generated electricity by steam turbine 15 by generator 16, simultaneously, the low-temperature receiver that comes that exhaust steam after generating enters in vapor-water heat exchanger 19, with vapor-water heat exchanger 19 is exchanged heat, and the condensed water of exhaust steam circulates back boiler 14 by circulating pump 18.
Preferably, the boiler 14 has multiple, accordingly, most circulating pumps 18 also have multiple.
Preferably, the vapor-water heat exchanger 19 have it is multiple, the vapor-water heat exchanger 19 be multiple structures in series or in parallel.
The CSRC diagnostic system 20 carries out data cube computation with boiler 14 and steam turbine 15, so that the operation to boiler and steam turbine is monitored.
Fig. 1 is to illustrate a boiler 14 with CSRC diagnostic system 20 to be connected, in fact, all boilers 14 are all connected with CSRC diagnostic system 20, because simplifying reason, is all not shown in figure.
The operation automatic system for monitoring and generating automated system of all boilers are incorporated into an automatically-monitored platform of Centralized Monitoring, that is CSRC diagnostic system 20, this platform can realize the automatic online monitoring of the various parameters to all boilers and steam turbine, solve the problems, such as the island of automation that existing boiler generator operation is present.
Certainly, the boiler thermodynamic system also includes being not shown in water charging system, accompanying drawing 1.
Preferably, as shown in Fig. 2 the automatic system for monitoring of the boiler 14 includes boiler combustion automatic system for monitoring, mainly including CO/CO2Content is set and Acquisition Instrument 21, CO/CO2Content measuring instrument 22, Fan Regulation valve 23, blower fan 24, fuel flow rate control to adjust device 25, Fuel lance 26.Described one end of Fuel lance 26 connects boiler, and fuel is added toward boiler furnace, and other end connection fuel flow rate controls to adjust device 25, the control and regulation device 25 and the data cube computation of CSRC diagnostic system 20.Described one end of blower fan 24 is connected with boiler, is responsible for burner hearth blowing-in and combustion-supporting, one end is connected with Fan Regulation valve 23, and the Fan Regulation valve regulation enters the air quantity of blower fan, and the Fan Regulation valve 23 carries out data cube computation with CSRC diagnostic system 20.The CO/CO2Content measuring instrument 22 is arranged in the exit flue 27 of boiler 14, for measuring CO and CO in flue gas2Content, the CO/CO2Content is set and the one end of Acquisition Instrument 21 connects CO/CO2Content measuring instrument 22, the other end carries out data cube computation with CSRC diagnostic system 20.The CO/CO2Content is set and Acquisition Instrument 21 is used to gather CO/CO2Content data and setting data.
The monitoring process of boiler combustion automatic system for monitoring is as follows:
Burning release CO volume contents are V1 in the unit interval during boiler combustion, burning release CO in unit interval during burning2Volume content is V2.In CO/CO2Content is set and V1 when setting boiler is normally run in Acquisition Instrument 21SettingAnd V2Setting.In actual boiler running process, CSRC diagnostic system can be according to CO/CO2The automatic fuel quantity to ventilation and conveying of data that content is set and Acquisition Instrument 21 is gathered is controlled.
Certainly, preferably, V1 can also be set in CSRC diagnostic system 20SettingAnd V2Setting
For the regulation of CO contents, if the CO of measurement content V1Measurement> V1Setting, then show ventilation not enough, therefore the instruction for increasing ventilation can be passed to Fan Regulation valve by CSRC diagnostic system, and air output is increased by increasing the aperture of Fan Regulation valve 23, if the CO of measurement V1Measurement< V1Setting, and the CO measured2Content V2Measurement< V2Setting, then show that ventilation is excessive, therefore the instruction for reducing ventilation can be passed to Fan Regulation valve 23 by CSRC diagnostic system, and air output is reduced by reducing the aperture of Fan Regulation valve 23.
Certainly, alternatively, if the CO of measurement content V1Measurement> V1Setting, then show that fuel quantity is excessive, therefore the instruction for reducing fuel quantity can be passed to fuel flow rate and control to adjust device 25 by CSRC diagnostic system, control to adjust device 25 to reduce fuel quantity by fuel flow rate, if the CO of measurement V1Measurement< V1Setting, and the CO measured2Content V2Measurement< V2Setting, then show that fuel quantity is very few, therefore the instruction for increasing fuel quantity can be passed to fuel flow rate and control to adjust device 25 by CSRC diagnostic system, and fuel flow rate is reduced by fuel flow rate control and regulation device 25.
Certainly, to the regulation of CO contents, preferably, above two regulative mode can be used, to accelerate governing speed simultaneously.
For CO2The regulation of content, if the CO of measurement2Content V2Measurement< V2Setting, show undercharge, therefore the instruction for increasing fuel quantity can be passed to fuel flow rate and control to adjust device 25 by CSRC diagnostic system 20, and fuel flow rate is reduced by fuel flow rate control and regulation device 25.
For CO2The regulation of content, is carried out in the case where CO content meets setting value.
If preferably, the CO of measurement2Content V2Measurement< V2Setting, then show that ventilation is excessive, therefore the instruction for reducing ventilation can be passed to Fan Regulation valve 23 by CSRC diagnostic system, and air output is reduced by reducing the aperture of Fan Regulation valve 23.
Certainly, to CO2The regulation of content, preferably, can use above two regulative mode simultaneously, to accelerate governing speed.
Preferably, V1SettingAnd V2SettingIt is a continuous number range.That is V1Measurement、V2MeasurementAs long as in number range, required even if meeting.
Preferably, can be to CO, CO2In each independently carry out Automated condtrol, such as only control CO or only control CO2, or both all control.
Preferably, setting the CO upper limit and/or the alert data and/or CO of lower limit in CSRC diagnostic system 202Lower limit alert data.Once having exceeded the upper limit or the data of lower limit, CSRC diagnostic system 20 is issued by alarm signal.Such a situation shows to have failed for the control of air output and fuel delivery, and possible boiler operatiopn goes wrong, it is necessary to be overhauled at once.
Preferably, CO/CO in described flue gas2Content detection instrument is to use moral figure testo350Pro analytical instrument, and resistance to extreme temperature is up to 500 DEG C, so as to meet pyrometric requirement.
Preferably, each boiler produces quantity of steam, 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 realizes the real time on-line monitorings of all operation boiler emphasis parameters
Preferably, the generating automated system includes pressure and power output before the machine according to the generation load regulation steam turbine.
Preferably, the generation load that the generating automated system includes collecting adjusts the air output and fuel quantity of boiler, while adjusting the pushing quantity of boiler.
The generating automated system is as shown in figure 3, CSRC diagnostic system gathers the output load of generator 16.Preferably, output load is shown in real time.If necessary to increase output load, then CSRC diagnostic system sends instruction, and control to adjust device 25 by Fan Regulation valve 23 and fuel flow rate increases air output and fuel quantity simultaneously, while increasing rate of water make-up by the conveying power of small pump 17.Certainly, preferably, the quantity of circulating water into boiler can also be increased by the power increase of pump 18.Certainly preferably, can increase power simultaneously to accelerate regulating time by small pump 17 and water circulating pump 18.
If necessary to reduce output load, then CSRC diagnostic system 20 sends instruction, and control to adjust device 25 by Fan Regulation valve 23 and fuel flow rate reduces air output and fuel quantity simultaneously, while reducing rate of water make-up by the conveying power of small pump 17.It is of course also possible to reduce to reduce the quantity of circulating water into boiler by the power of pump 18.Certainly preferably, can reduce power simultaneously to accelerate regulating time by small pump 17 and water circulating pump 18.
Preferably, if necessary to increase output load, then CSRC diagnostic system sends instruction, increase pressure and power output before the machine of the steam turbine.If necessary to reduce output load, then CSRC diagnostic system sends instruction, reduces pressure and power output before the machine of the steam turbine.
Pass through above-mentioned Based Intelligent Control, it is possible to achieve the intelligent power generation of boiler so that boiler combustion and generator operation automation, improve the efficiency of monitoring.
Certainly, Fig. 3 is a schematic diagram, illustrate only small pump 17, miscellaneous part is shown in Fig. 1,2, is omitted herein, those skilled in the art according to Fig. 1-3 combine specification record it will be appreciated that.
Preferably, as shown in figure 13, every boiler also includes automatically controlling drainage, and the water for automatically controlling quantity of steam and input boiler that drainage is produced according to boiler is automatically controlled.If the ratio between quantity of steam and the water for inputting boiler is less than lower numerical limit, CSRC diagnostic system 20 automatically controls reduction blowdown flow rate.If the ratio between quantity of steam and the water for inputting boiler is more than limit value, CSRC diagnostic system 20 automatically controls increase blowdown flow rate.Specific control system is as follows:
As shown in figure 13, the boiler includes flowmeter 34, pressure gauge 35 and the thermometer 36 being arranged on steam (vapor) outlet pipeline, flow velocity, pressure and temperature for measuring output steam.The flowmeter 34, pressure gauge 35 and thermometer 36 carry out data cube computation with CSRC diagnostic system 20 respectively, so as to by the data transfer of measurement to CSRC diagnostic system 20, according to the vapor (steam) temperature of measurement, pressure, the quality of steam of flow relocity calculation unit interval in central monitoring system.
The boiler includes the blow-off pipe for being arranged on the lower end of boiler-steam dome 32, blowoff valve 39 is set on blow-off pipe, one end connecting valve adjusting means 38 of blowoff valve 39, adjustment mechanism for valve 38 carries out data cube computation with CSRC diagnostic system 20, so as to by valve opening data transfer to CSRC diagnostic system 20, receive instruction from central monitoring and diagnosis system 20 simultaneously, adjust the aperture of blowoff valve 39.
Further comprise flowmeter 41 on the blow-off pipe, measure the flow of blowdown.The flowmeter 41 carries out data cube computation with CSRC diagnostic system 20, to pass data to CSRC diagnostic system 20.CSRC diagnostic system 20 calculates the blowdown flow rate of unit interval according to flowmeter.
Flowmeter is set on the water inlet manifold of the boiler, for detecting the flow entered in boiler, the flowmeter carries out data cube computation with CSRC diagnostic system 20, so that by the data transfer of measurement, 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 measurement.
Certainly, into boiler water be both circulating water pipe and filling pipe water summation.Preferably, the flowmeter with the data cube computation of CSRC diagnostic system 20 can be set on filling pipe and circulating water pipe, by calculating both flow sums, so that the unit of account time enters the total water of boiler respectively.The present invention can be using various control strategy come control of sewage disposal amount.
One preferred control strategy is:The ratio of the quality of steam that CSRC diagnostic system 20 is calculated and the quality of the water of input boiler is less than lower limit, then shows that blowdown rate is too high, therefore CSRC diagnostic system 20 turns the aperture of blowoff valve 39 down by adjustment mechanism for valve 38 automatically.By aforesaid operations, blowdown can be avoided excessive, the waste of the energy is caused.If the ratio of quality of steam and the quality of the water of input boiler is more than higher limit, shows that blowdown rate is too low, the life-span of boiler may be influenceed, then CSRC diagnostic system 20 improves the aperture of blowoff valve 39 by adjustment mechanism for valve 38 automatically.
If preferably, in the case that the aperture of blowoff valve 39 is maximum, the ratio of quality of steam and the quality of the water of input boiler is still less than lower limit, then system can give a warning, and points out whether drainage breaks down.
If preferably, in the case of the closing of blowoff valve 39, the ratio of quality of steam and the quality of the water of input boiler is still more than higher limit, then system can give a warning, and points out whether drainage breaks down.
When one preferred control strategy is the quality of the water for the blowdown that CSRC diagnostic system 20 is detected by flowmeter 41 and inputs the ratio of the quality of the water of boiler more than the upper limit, then show that blowdown flow rate is excessive, therefore CSRC diagnostic system 20 turns the aperture of blowoff valve 39 down by adjustment mechanism for valve 38 automatically.If the ratio of the quality of the water of the blowdown of detection and the quality of the water of input boiler exceedes lower limit, show that blowdown flow rate is too small, therefore CSRC diagnostic system 20 tunes up the aperture of blowoff valve 39 by adjustment mechanism for valve 38 automatically.By so setting, it is to avoid the water quality in drum is too poor, in order to avoid cause the corrosion of boiler-steam dome.
One preference policy, the drum 32 also includes Water Test Kits 37, to measure the water quality in drum.The Water Test Kits 37 carries out data cube computation with CSRC diagnostic system 20, to receive the data of measurement, and aperture control is carried out to blowoff valve 39 according to the data of measurement.If the as shown by data water quality of measurement is excessively poor, such as a certain index exceeds the data upper limit, then needs to carry out timely blowdown, therefore CSRC diagnostic system 20 tunes up the aperture of blowoff valve 39 by adjustment mechanism for valve 38 automatically.If the as shown by data water quality of measurement is good, CSRC diagnostic system 20 turns the aperture of blowoff valve 39 down by adjustment mechanism for valve 38 automatically.Even blowoff valve can be closed in the case of necessity.
One preference policy, sets Water Test Kits (not shown), to measure the water quality in blow-off pipe on blow-off line.The Water Test Kits carries out data cube computation with CSRC diagnostic system 20, to receive the data of measurement, and aperture control is carried out to blowoff valve according to the data of measurement.If the as shown by data water quality of measurement is excessively poor, such as a certain index exceeds the data upper limit, then needs to carry out increase blowdown flow rate, therefore CSRC diagnostic system 20 tunes up the aperture of blowoff valve 39 by adjustment mechanism for valve 38 automatically.If the as shown by data water quality of measurement is good, CSRC diagnostic system 20 turns the aperture of blowoff valve 39 down by adjustment mechanism for valve 38 automatically.Even blowoff valve can be closed in the case of necessity.
Preferably, connecting waste heat utilization heat exchanger 33, the waste heat utilization heat exchanger 33, to make full use of the heat of sewage on the blow-off line.The low-temperature receiver inlet tube of heat exchanger 33 sets valve 40, the valve 40 is connected with adjustment mechanism for valve 41, adjustment mechanism for valve 41 carries out data cube computation with CSRC diagnostic system 20, so as to which the aperture data transfer of valve 40 to be received to the instruction of CSRC diagnostic system 20 to CSRC diagnostic system 20 and simultaneously.If the blowdown flow rate increase that CSRC diagnostic system 20 is measured, then CSRC diagnostic system 20 increases the aperture of valve 0 by adjustment mechanism for valve 41, to increase the low-temperature receiver amount for entering heat exchanger 33, keep the temperature of the low-temperature receiver of the output of heat exchanger 33 constant, while avoiding low-temperature receiver from overheating.If the blowdown flow rate that CSRC diagnostic system 20 is measured is reduced, then CSRC diagnostic system 20 reduces the aperture of valve 0 by adjustment mechanism for valve 41, to reduce the low-temperature receiver amount for entering heat exchanger 33, keep the temperature of the low-temperature receiver of the output of heat exchanger 33 constant, while avoiding low-temperature receiver heating effect too poor.Preferably, the heat exchanger 33 can set multiple.
As preference policy, CSRC diagnostic system 20 can calculate the water loss of boiler by the ratio of the quality for the water for calculating quality of steam and blowdown quality sum and input boiler.If the water loss calculated exceedes the upper limit, CSRC diagnostic system 20 then sends alarm.
As preference policy, water-level gauge (not shown) is set, and the water-level gauge carries out data cube computation with CSRC diagnostic system 20, so as to which measurement data is passed into CSRC diagnostic system 20 in drum 32.CSRC diagnostic system 20 changes according to the height of water level of the data unit of account time of measurement, so as to calculate the mass change of the water unit interval in drum 32.CSRC diagnostic system 20 adjusts the aperture of blowoff valve 39 according to the change of quantity of steam, the water of boiler input and drum water.If the quality of steam that CSRC diagnostic system 20 is calculated is less than lower limit plus the mass change sum of the water of boiler-steam dome 32 and the ratio of the quality of the water of input boiler less than certain numerical value, then show that blowdown rate is too high, therefore CSRC diagnostic system 20 turns the aperture of blowoff valve 39 down by adjustment mechanism for valve 38 automatically.By aforesaid operations, blowdown can be avoided excessive, the waste of the energy is caused.By increase steam water-level detect, further increase measurement data it is accurate.
As preference policy, CSRC diagnostic system 20 can calculate the water loss of boiler by the ratio of the quality for the water for calculating quality of steam, the variable quality of drum water and blowdown quality three sum and input boiler.If the water loss calculated exceedes the upper limit, CSRC diagnostic system 20 then sends alarm.
Preferably, setting the temperature of measurement drum reclaimed water and the device of drum pressure, described device and the data cube computation of CSRC diagnostic system 20, CSRC diagnostic system 20 calculates the mass change of drum reclaimed water according to the temperature and pressure of measurement.The quality of water is calculated by temperature and pressure so that result is more accurate.
Preferably, set the device of measurement vapor (steam) temperature and pressure in drum, described device and the data cube computation of CSRC diagnostic system 20, CSRC diagnostic system 20 calculate the quality of steam in drum according to height of water level in the temperature and pressure and drum of measurement.So, in calculating above, the size of the ratio of the quality of the water according to the conjunction of the mass change three of the mass change of steam, the quality of output steam and drum reclaimed water in drum with inputting boiler is come the aperture of control of sewage disposal valve.So make it that result of calculation is more accurate.
Equally, it is also required to be contrasted mass change and blowdown flow rate sum and boiler the input water of the mass change of steam, the quality for exporting steam and drum reclaimed water in drum when the loss for calculating water.
Preferably, thermometer can be set on blow-off pipe, CSRC diagnostic system 20 is according to the quality of the water of the blowdown of the water temperature of blowdown, the composition of water and flow relocity calculation unit interval.
Preferably, the temperature, pressure of steam and the relation data of density are prestored in CSRC diagnostic system 20, to calculate quality of steam.The temperature and density relationship data of water can also be prestored, while calculating the quality of drum reclaimed water.Relation for the temperature of sewage, composition and density is also prestored in lower CSRC diagnostic system 20.
As preferred, CSRC diagnostic system 20 is according to the ton steam consumption fuel quantity parameter of the quality of steam of obtained output and the fuel quantity of input, in real time monitoring boiler, the running status of real-time diagnosis boiler, boiler is set to remain Effec-tive Function, it is to avoid the energy waste caused under boiler efficiency.
Boiler ton steam consumption fuel quantity SF is defined as the steam gross mass S produced boiler a period of timeGross massDivided by the fuel gross mass F inputted in this time of boilerGross mass, obtain a ton index for steam consumption fuel quantity.That is SF=SGross mass/FGross mass
If boiler ton steam consumption fuel quantity is excessive, show that boiler efficiency is low, it is necessary to carry out examination and maintenance.
Boiler ton steam consumption fuel quantity can dynamically update, and always accumulate for the previous period, such as can be minute, second, hour, the data of preferably 5 minutes be shown as result of calculation in CSRC diagnostic system 20, it is possible to draw out trend curve.
By the ton steam consumption fuel quantity parameter for monitoring boiler in real time, the parameter of boiler when can draw SF maximums, at least one of parameter such as including but not limited to subsidiary engine power consumption, fuel input quality, steam input quality, air inducing unit frequency, air-supply unit frequency, circulation pump frequency.So as to make it that boiler is run under the above parameters in the process of running so that SF reaches maximum, so as to reach fuel-saving purpose.
Preferably, above-mentioned parameter is all the mean parameter in a period of time.
Preferably, fuel is coal.
Preferably, CSRC diagnostic system 20 also carries out data cube computation with power information, so as to the power consumption of the subsidiary engine that obtains steam generator system in time.CSRC diagnostic system 20 is according to the quality of steam and power consumption of obtained output, the ton steam consumption electrical parameter of every boiler is monitored in real time, the running status of real-time diagnosis boiler, makes boiler remain Effec-tive Function, it is to avoid the energy waste caused under boiler efficiency.
The 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 produced boiler a period of timeGross massDivided by this time of boiler all subsidiary engine power consumption summation EPower consumption, obtain a ton index for steam consumption electricity.That is SE=SGross mass/EPower consumption
If boiler ton steam consumption electricity is excessive, show that boiler efficiency is low, it is necessary to carry out examination and maintenance.
Boiler ton steam consumption electricity can dynamically update, and always accumulate for the previous period, such as can be minute, second, hour, the data of preferably 5 minutes be shown as result of calculation, it is possible to draw out trend curve.
As preferred, by the ton steam consumption electrical parameter for monitoring boiler in real time, the parameter of boiler when can draw SE maximums, at least one of parameter such as including but not limited to subsidiary engine power consumption, fuel input quality, steam input quality, air inducing unit frequency, air-supply unit frequency, circulation pump frequency.So as to make it that boiler is run under the above parameters in the process of running so that SE reaches maximum, so as to reach the purpose for saving electricity.
Preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferred, by monitoring the ton steam consumption fuel quantity of parallel boiler and/or the parameter of ton steam consumption electricity in real time, the boiler of paired running is realized to mark analysis, all the time the higher boilers of SE and/or SF are made to be in peak load state, boiler low SE and/or SF is pinpointed the problems and solved as early as possible in time, the boiler of operation is kept efficient all the time.
Preferably, by analyzing ton vapour coal consumption and/or ton steam consumption electricity index to marking every boiler, analysis judges the higher boilers of SE and/or SF, increases its operating load;And for SE and/or SF relatively low boiler, its operating load is reduced, if boiler SE and/or SF are less than normal operating experience data, shutdown maintenance as early as possible is needed, improves and put into operation as early as possible again after its thermal efficiency.
Preferably, it is of course also possible to Manual analysis judges the higher boilers of SE and/or SF, increasing its operating load;And for SE and/or SF relatively low boiler, its operating load is reduced, if boiler SE and/or SF are less than lower limit, shutdown maintenance as early as possible is needed, improves and put into operation as early as possible again after its SE and/or SF.
Preferably, by the way that one the most entirety of the boiler of many paired runnings is considered into ton steam consumption fuel quantity SFALLSize.Boiler gross ton steam consumption fuel quantity SFALLIt is defined as the steam gross mass S of all boiler a period of time generationsGross mass allDivided by the fuel gross mass F inputted in all this times of boilerGross mass all, obtain the index of gross ton steam consumption fuel quantity.That is SFALL=SGross mass all/FGross mass all
Boiler gross ton steam consumption fuel quantity parameter can dynamically update, and always accumulate for the previous period, the data of preferably 5 minutes are shown as result of calculation, it is possible to draw out trend curve.
Preferably, the SF by monitoring boiler in real timeALLParameter, it can be deduced that SFALLThe parameter of every boiler during maximum, at least one of parameter such as the subsidiary engine power consumption of including but not limited to every boiler, fuel input quality, steam input quality, air inducing unit frequency, air-supply unit frequency, circulation pump frequency.So as to cause that the boiler of parallel connection is run under the above parameters in the process of running so that SFALLMaximum is reached, so as to reach the purpose of saving fund.
Preferably, above-mentioned parameter is all the mean parameter in a period of time.
Preferably, by the way that one the most entirety of the boiler of many paired runnings is considered into ton steam consumption electricity SEALLSize.Boiler gross ton steam consumption electricity SEALLIt is defined as the steam gross mass S of all boiler a period of time generationsGross mass allDivided by all subsidiary engine power consumption E inputted in all this times of boilerGross mass all, obtain the index of gross ton steam consumption fuel quantity.That is SEALL=SGross mass all/ETotal electricity all
Boiler SEALLParameter can dynamically be updated, and always accumulate for the previous period, and the data of preferably 5 minutes are shown as result of calculation, it is possible to draw out trend curve.
Preferably, the SE by monitoring boiler in real timeALLParameter, it can be deduced that SEALLThe parameter of every boiler during maximum, at least one of parameter such as the subsidiary engine power consumption of including but not limited to every boiler, fuel input quality, steam input quality, air inducing unit frequency, air-supply unit frequency, circulation pump frequency.So as to cause that the boiler of parallel connection is run under the above parameters in the process of running so that SEALLMaximum is reached, so as to reach the purpose of saving fund.
Preferably, above-mentioned parameter is all the mean parameter in a period of time.
Preferably, ton steam consumption fuel quantity can be considered together with ton steam consumption electricity.The fuel that boiler a period of time is run spent subsidiary engine power consumption and inputted is converted to price respectively, and be added the price of both, total price is obtained, the steam total amount divided by above-mentioned total price then produced with this period of time obtains the index that ton vapour is worth SEF.That is SEF=SGross mass/(FGross mass* FUnit price+EPower consumption* EUnit price), wherein FUnit price、EUnit priceIt is price, the price of per unit electricity of per unit fuel respectively.Preferably, the unit of fuel can be volume or mass unit, electric unit can be kilowatt hour.
CSRC diagnostic system 20 monitors the ton vapour value parameter of every boiler in real time, and the running status of real-time diagnosis boiler makes boiler remain Effec-tive Function, it is to avoid the energy waste caused under boiler efficiency.
If boiler ton vapour value is too small, show that boiler efficiency is low, it is necessary to carry out examination and maintenance.It is preferred that, less than lower limit, CSRC diagnostic system 20 sends alarm.Whether prompting needs examination and maintenance.
Boiler ton vapour value parameter can dynamically update, and always accumulate for the previous period, the data of preferably 5 minutes are shown as result of calculation, it is possible to draw out trend curve.
As preferred, by the ton vapour value parameter for monitoring boiler in real time, the parameter of boiler when can draw SEF maximums, at least one of parameter such as including but not limited to subsidiary engine power consumption, fuel input quality, steam input quality, air inducing unit frequency, air-supply unit frequency, circulation pump frequency.So as to make it that boiler is run under the above parameters in the process of running so that SEF reaches maximum, so as to reach the purpose of saving fund.
Preferably, above-mentioned parameter is all the mean parameter in a period of time.
As preferred, by monitoring the steam consumption value parameter of parallel boiler in real time, the boiler of paired running is realized to mark analysis, SEF highests boiler is in peak load state all the time, boiler low SEF is pinpointed the problems and solved as early as possible in time, the boiler of operation is kept efficient all the time.
Preferably, by analyzing the steam consumption value parameter index to marking every boiler, analysis judges the higher boilers of SEF, increases its operating load;And for boiler relatively low SEF, its operating load is reduced, if boiler SEF is less than normal operating experience data, shutdown maintenance as early as possible is needed, improves and put into operation as early as possible again after its thermal efficiency.
Preferably, it is of course also possible to Manual analysis judges the higher boilers of SEF, increasing its operating load;And for boiler relatively low SEF, its operating load is reduced, if boiler SEF is less than lower limit, shutdown maintenance as early as possible is needed, improves and put into operation as early as possible again after its thermal efficiency.
Preferably, by the way that one the most entirety of the boiler of many paired runnings is considered into gross ton vapour is worth SEFALLSize.The total amount of fuel that all boiler a period of times will be run spent subsidiary engine power consumption total amount and input is converted to price respectively, and the price of both is added, and obtains total price, this period of time all boiler then is produced into steam gross mass SGross mass ALLDivided by above-mentioned total price, obtain a ton vapour value SEFALLIndex.That is SEFALL=SGross mass ALL/(FGross mass all* FUnit price+EPower consumption all* EUnit price), FGross mass all、EPower consumption allRepresent that the total fuel quantity and subsidiary engine of all boiler inputs expend total electricity respectively.
Boiler gross ton vapour value parameter can dynamically update, and always accumulate for the previous period, the data of preferably 5 minutes are shown as result of calculation, it is possible to draw out trend curve.
Preferably, the gross ton vapour value parameter by monitoring boiler in real time, it can be deduced that SEFALLThe parameter of every boiler during maximum, at least one of parameter such as the subsidiary engine power consumption of including but not limited to every boiler, fuel input quality, steam input quality, air inducing unit frequency, air-supply unit frequency, circulation pump frequency.So as to cause that the boiler of parallel connection is run under the above parameters in the process of running so that SEFALLMaximum is reached, so as to reach the purpose of saving fund.
Preferably, above-mentioned parameter is all the mean parameter in a period of time.
Preferably, described vapor-water heat exchanger and waste heat utilization heat exchanger are plate type heat exchanger.Plate type heat exchanger uses following structure:
The plate type heat exchanger includes heat exchange plate 10, gasket seal 13, gasket seal 13 is located between adjacent heat exchange plate 10, the gasket seal 13 is arranged in the sealed groove 28 on the periphery of heat exchange plate 10, the sealed groove 28 is trapezium structure, the both sides up and down of the trapezium structure obtain side to be parallel, top is short side, it is long side below, the short side position on parallel two side of the trapezium structure sets opening 31, the gasket seal 13 is the trapezium structure worked in coordination with sealed groove, and the gasket seal 13 is put at opening 31 in sealed groove 28.
By setting the sealed groove and corresponding gasket seal of trapezium structure, sealed groove and gasket seal being entrenched togather tightly can be caused, it is to avoid use adhesive, add the fastness of sealing.
Preferably, described trapezium structure is isosceles trapezoidal structure.
Preferably, the sealed groove 28 sets projection 29 in the inside on the side of left and right two, correspond to therewith, outside on the side of left and right two of the trapezium structure of gasket seal 13 is set and raised 29 corresponding recesses.Pass through said structure so that it is more firm that sealed groove and gasket seal are fitted together to, and sealing effectiveness is more preferable.
Preferably, the inside on side of the sealed groove 28 in bottom sets projection 30, correspond to therewith, the outside of side in the bottom of the trapezium structure of gasket seal 13 is set and raised 30 corresponding recesses.Pass through said structure so that it is more firm that sealed groove and gasket seal are fitted together to, and sealing effectiveness is more preferable.
Preferably, projection 29 is triangle, projection 30 is rectangle.
Preferably, described raised 29 set multiple respectively on every one side, preferably 3-5 are used as.
Preferably, the lower edge of triangular hill 29 is parallel with the side of trapezoidal bottom.By so setting, it can make it that installing gasket seal 13 is more prone to, it is easy for installation.
Preferably, trapezoidal left and right two while and it is long while (side of bottom) angle be 40-70 °, preferably 50-60 °.Length between trapezoidal height and short side is 1:(2-4), preferably 1:3.Such angle and length are set, chimeric fastness is on the one hand considered, the convenience installed on the one hand is considered.Angle is smaller, and height is higher, then installs more difficult, but chimeric fastness is good, good sealing effect.Conversely, angle is bigger, height is lower, then it is easier to install, but chimeric fastness is poor, and sealing effectiveness is poor.Above-mentioned angle and height is to consider to install that convenience and chimeric fastness carry out considers obtained optimal effect.
Generally, the cross-sectional area of plate-type heat exchanger slab both sides cold and hot fluid passage is equal (Fig. 6 a).In this case, if the flow (referring to volume flow) of two kinds of fluids is more or less the same, now the runner of same fluid can take mode in parallel parallel to each other, such as Fig. 6 a, now the coefficient of heat transfer of the side liquid of plate type heat exchanger two is more or less the same, and the whole heat exchanger coefficient of heat transfer is very high, and so sets it is also possible that the import and export of two kinds of fluids are all on an end plate 5, as shown in Figure 6 b, be conducive to plate type heat exchanger disassembles maintenance and plate cleaning.But if two kinds of flows differ larger fluids when being exchanged heat, if two kinds of fluids all take fluid passage in parallel, occur it is too low compared with the flow velocity of low discharge, so as to cause the lower coefficient of heat transfer.Therefore low-flow fluid passage is generally arranged to the form of series connection, as shown in Figure 7a, four import and export of cold fluid and hot fluid can not be thus provided entirely on an end plate, it can only be arranged on two end plates 5,6, as shown in Figure 7b, fluid inlet and outlet connectors are all set on two end plates, when heat exchanger is in connection status with pipeline, plate type heat exchanger will dismantle difficult, it is necessary to which two ends dismounting, causes maintenance inconvenience.
The plate type heat exchanger of the present invention takes following structure, to adapt to vapour-liquid heat exchange.
As preferred, at least one by-passing parts is set in the small heat exchange plate 10 of the flow, point Cheng Liudao 7 that the flow path that the by-passing parts will flow through the heat exchanging fluid of heat exchange plate is divided at least two points of Cheng Liudao 7, described heat exchange plate 10 is cascaded structure.Pass through above-mentioned point Cheng Liudao 7 cascaded structure so that fluid is therefore by all point Cheng Liudao 7, as shown in fig. 6, so that heat exchanging fluid forms S-shaped runner on heat exchange plate 10.
By setting by-passing parts so that the small fluid of flow can be full of whole heat exchange plate, so as to avoid the heat exchange area for some fluid shorts occur, so as to add the coefficient of heat transfer, improve the coefficient of heat transfer of whole heat exchanger;In addition, by setting by-passing parts, so that the fluid of low discharge can also realize the parallel connection of the fluid passage in multiple plates, as shown in Figure 6 a, avoid the need to improve the coefficient of heat transfer and small fluid passage is set to the structure of the series connection shown in Fig. 7 a, so that four of fluid are imported and exported 1-4 and are all disposed within same end plate, so that easy to maintenance.
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, preferably, the plate of water source side sets by-passing parts.
Preferably, by-passing parts are to realize that the seal groove 8 is arranged on heat exchange plate, by the way that sealing gasket 9 is inserted into seal groove 8, so as to form by-passing parts by seal groove 8 and sealing gasket 9.
Preferably, by-passing parts are realized by directly setting sealing strip on heat exchange plate.Preferably, sealing strip and heat exchange plate integration manufacture.
On the fluid inlet of heat exchange plate and the upper and lower ends of outlet, i.e. Fig. 3 upper and lower ends, by-passing parts are closing at one end, it is that opening is set in the other end, wherein along left and right directions, aperture position is to be disposed alternately at upper and lower ends, so ensures that fluid passage forms S-shaped.
It is direction up and down that before note that and direction up and down mentioned later, which is not limited in use state, herein just for the sake of the structure of the plate in statement Fig. 8.
Fig. 8, the plate described in 11 are because be provided with two by-passing parts, therefore the import and export of fluid are arranged on top and bottom.1 or odd number by-passing parts can certainly be set, and the import and export position of fluid now is located on same one end, i.e., simultaneously positioned at upper end or lower end.
Foregoing S-shaped runner can be half of S-shaped, the situation of one by-passing parts is for example only set, it can also be whole S-shaped, such as Fig. 8,11 form, it can also be the combination of multiple S-shapeds and/or half of S-shaped, for example, the situation for being more than 2 by-passing parts is set, and such as 3 by-passing parts are exactly the combination of 1 one S-shapeds and half of S-shaped, 4 by-passing parts be exactly 2 S-shapeds, etc. by that analogy.
Form for using sealing gasket, preferably, the pad integrated design of the setting between sealing gasket and heat exchange plate for plate heat exchanger piece, therefore present invention provides the pad used in plate type heat exchanger in one between heat exchange plate.At least one flow seal pad 9 is set in the pad, the flow path for the heat exchanging fluid that the flow seal pad 9 will flow through heat exchange plate is divided at least two points of Cheng Liudao 7, point Cheng Liudao 7 in described heat exchange plate 10 is cascaded structure, so that heat exchanging fluid forms S-shaped runner on heat exchange plate 10.
In numerical simulation and it was found that, by setting by-passing parts, the increase of the heat exchanger coefficient of heat transfer is enabled to, 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 big, and is overlapped there may be the side boundary layer of runner two along fluid flow direction, and causes the coefficient of heat transfer to decline, the excessive coefficient of heat transfer for also resulting in reduction plate type heat exchanger of width of flow path, therefore there is a suitable numerical value for split channel 7;Also there is certain requirement for the length of by-passing parts opening, if too small openings, the quantity that fluid can be caused to be flowed through by opening is too small, the coefficient of heat transfer is reduced while pressure is increased, similarly, if excessive, fluid can produce short-circuited region, corresponding heat transfer effect is not had, therefore has for opening a suitable length yet.Therefore the size relationship of an optimization is met between the Opening length of by-passing parts, the length of by-passing parts, flow manifold width.
Therefore, the present invention is the thousands of numerical simulations and test data by multiple various sizes of heat exchangers, in the case of industrial requirements pressure-bearing is met (below 2.5MPa), in the case where realizing maximum heat exchange amount, the dimensionally-optimised relation of the optimal heat exchange plate summed up.
As shown in fig. 7, the Opening length L1 of by-passing parts, the length of by-passing parts is L2, flow manifold width W, then meets 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
The < L1/W < 1.1 of 0.17 < L1/L < 0.22,0.5
The < c < 0.004 of 0.18 < a <, 0.21,0.014 < b < 0.016,0.0035.
Wherein Opening length is that, along by-passing parts, the position edge occurred from opening reaches the A points in the farthest position of fluid passage, such as Fig. 7.
Preferably, a=0.19, b=0.015, c=0.0037;
Preferably, being continuously increased with L1/W, a numerical value is constantly reduced;
Preferably, being continuously increased with L1/W, b, c numerical value is continuously increased.
Preferably, the flow velocity of the fluid of split channel is 0.4-0.8m/s, it is preferable that 0.5-0.6m/s, the heat transfer effect for taking above-mentioned formula to obtain under this flow velocity is best.
It is preferred that, plate the spacing 4-6mm, preferably 5mm of heat exchanging plate of heat exchanger.
For the form integrated with pad of the use sealing gasket in Fig. 9, also meet in the case of above-mentioned formula, heat transfer effect is optimal.
Preferably, multiple by-passing parts are parallel to each other.
Preferably, along the direction (more remote i.e. apart from the fluid intake of heat exchange plate) of flow of fluid, the width W of different flow manifolds is constantly reduced on same heat exchange plate.For example, the width of the flow manifold 7 in Fig. 8 is more than flow manifold 11, the width of flow manifold 11 is more than flow manifold 12.Constantly being reduced by flow manifold width W can make it that fluid constantly accelerates, it is to avoid because the caused fluid operation that is short of power is slow.
Preferably, along the direction of flow of fluid, the width W of same flow manifold is constantly reduced.For example, in flow manifold 7, along fluid flow direction (i.e. Fig. 8 is from top to bottom), width W is constantly reduced.Now, mean breadth W is used for the W in preceding formula.
Preferably, on various heat exchange plate, more remote apart from heat exchanger fluid entrance, flow manifold width is smaller.Mainly more remote apart from entrance, then distribution fluid is fewer, and the change for passing through width of flow path make it that fluid ensures certain flow velocity.
Preferably, heat exchange plate sets ripple, the height of ripple is different.On same plate, along the flow path of fluid, the wave height in same split channel gradually rises, such as in flow manifold 7, and along fluid flow direction (i.e. Fig. 8 is from top to bottom), wave height gradually rises.
Preferably, flow manifold is more remote apart from heat exchange plate fluid intake distance, the height of the ripple in different flow manifolds is higher, for example, the wave height in the flow manifold 7 in Fig. 8 is less than flow manifold 11, the wave height of flow manifold 11 is less than flow manifold 12.
Preferably, on various heat exchange plate, more remote apart from heat exchanger fluid entrance, wave height is higher.Mainly more remote apart from entrance, then distribution fluid is fewer, and the change for passing through wave height make it that fluid ensures certain flow velocity.
Preferably, heat exchange plate sets ripple, the density of ripple is different.On same plate, along the flow path of fluid, the corrugation density in same split channel becomes larger, such as in flow manifold 7, and along fluid flow direction (i.e. Fig. 8 is from top to bottom), corrugation density becomes larger.
Preferably, flow manifold is more remote apart from heat exchange plate fluid intake distance, the density of the ripple in different flow manifolds becomes big.For example, the corrugation density in flow manifold 7 in Fig. 8 is less than flow manifold 11, the corrugation density of flow manifold 11 is less than flow manifold 12
Preferably, on various heat exchange plate, more remote apart from heat exchanger fluid entrance, corrugation density is bigger.Mainly more remote apart from entrance, then distribution fluid is fewer, and the change for passing through wave height make it that fluid ensures certain flow velocity.
Preferably, wave height noted earlier and/or the increased amplitude of density are less and less.
Preferably, the gasket seal between sealing gasket 9 and/or heat exchange plate uses elastomeric material.The elastomeric material is prepared from the following raw materials in parts by weight:7-9 parts of ethylene propylene diene rubber, 3-6 parts of butadiene-styrene rubber, 6-8 parts of zinc oxide, 13-15 parts of white carbon, 4-5 parts of accelerator, 2-8 parts of foaming agent, 5-6 parts of naphthenic oil, 20 parts of titanium dioxide, 50-55 parts of natural rubber, Rhein dissipates 10-13 parts, 15-17 parts of silicon rubber, 2 parts of carborundum, 2 parts of Melamine, 0.6 part to 1.5 parts of age resistor, 4 parts to 6 parts of softening agent, 2.2 parts to 4 parts of vulcanizing agent.
Preferably, 8 parts of ethylene propylene diene rubber, 5 parts of butadiene-styrene rubber, 7 parts of zinc oxide, 14 parts of white carbon, 4 parts of accelerator, 4 parts of foaming agent, 6 parts of naphthenic oil, 20 parts of titanium dioxide, 52 parts of natural rubber, Rhein dissipates 12 parts, 16 parts of silicon rubber, 2 parts of carborundum, 2 parts of Melamine, 0.9 part of age resistor, 5 parts of softening agent, 3 parts of vulcanizing agent.
Manufacture method comprises the following steps:
A. the ethylene propylene diene rubber, butadiene-styrene rubber, zinc oxide, white carbon, accelerator, foaming agent, naphthenic oil, titanium dioxide, natural rubber, scattered Rhein, silicon rubber, carborundum, Melamine and accelerator and age resistor are sequentially added in banbury, then start banbury and carry out first time mixing, 70 seconds to 75 seconds time, temperature is 60 DEG C to 70 DEG C;
B. softening agent is added in the banbury of step A and carries out second of mixing, 75 seconds time, temperature is less than 105 DEG C, then cools down dumping;
C. vulcanize:The glue of step B is discharged on tablet press machine and adds vulcanizing agent and is turned refining, time 125-140 second, bottom sheet is produced.
Preferably, accelerator is diphenylguanidine.
Preferably, the accelerator is dithiocar-bamate;The age resistor is Tissuemat E;The softening agent is paraffin;The vulcanizing agent is curing resin.
The rubber has the following advantages that:1) by adding the material compounding of zinc oxide, titanium dioxide, resulting materials elasticity is good, and with certain hardness, wear-resisting durable, long lifespan is not easy to wear.2) due to using Tissuemat E, as antiaging agent, the persistence, hardness and abrasion resistance of rubber can be improved;3) cure time is short, rubber is turned into the macromolecular of space network by the macromolecules cross-linking of linear structure, the rubber of output its anti-tensile, stretch surely, wear-resisting performance it is good.
Figure 10 illustrates the flow channel of the big fluid of flow, in fact, for the present invention, two kinds of heat exchanging fluids can use the small fluid of flow.For example in the case where heat exchange plate is certain, flow all very littles of two kinds of fluids, now the flow channel of two kinds of fluids can take the plate of Fig. 8, Figure 11 form.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, can be made various changes or modifications, therefore protection scope of the present invention should be defined by claim limited range.

Claims (3)

1. a kind of boiler thermodynamic system, including CSRC diagnostic system and multiple boilers in parallel, each described boiler respectively with CSRC diagnostic system data cube computation, the power information of the CSRC diagnostic system and every boiler carries out data cube computation, so as to the power consumption of the subsidiary engine that obtains every boiler in time, quality of steam and power consumption that CSRC diagnostic system is exported according to every obtained boiler, the ton steam consumption electrical parameter of every boiler is monitored in real time, the boiler ton steam consumption electricity is the summation of all subsidiary engine power consumption in this time of steam total amount divided by boiler produced boiler a period of time, obtain a ton index for steam consumption electricity;
CSRC diagnostic system judges ton higher boiler of steam consumption electricity, increases its operating load by analyzing the ton steam consumption electricity index to marking every boiler, analysis;And for the relatively low boiler of ton steam consumption electricity, reduce its operating load;If boiler ton steam consumption electricity is less than lower limit, alarm is sent.
2. boiler thermodynamic system as claimed in claim 1, including steam turbine, generator, vapor-water heat exchanger, the steam that boiler is produced drives generator to be generated electricity by steam turbine, simultaneously, exhaust steam after generating enters vapor-water heat exchanger, exchanged heat with the low-temperature receiver in vapor-water heat exchanger, the condensed water of exhaust steam circulates back boiler by circulating pump.
3. boiler thermodynamic system as claimed in claim 2, it is characterised in that the vapor-water heat exchanger is plate type heat exchanger;The flow that the heat exchanging fluid of heat exchange is participated in the plate type heat exchanger is different, the plate type heat exchanger includes heat exchange plate, at least one by-passing parts is set in the small heat exchange plate of flow, the flow path that the by-passing parts will flow through the heat exchanging fluid of heat exchange plate is divided at least two flow manifolds, by-passing parts set opening, so that point Cheng Liudao in described heat exchange plate is cascaded structure, so that the small heat exchanging fluid of flow forms S-shaped runner on heat exchange plate;Heat exchange plate sets ripple, and the height of ripple is different;On same plate, along the flow path of fluid, the wave height in same split channel gradually rises.
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