CN111895378B - Method for adjusting steam quantity generated by gas steam generating device - Google Patents
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- CN111895378B CN111895378B CN202010730760.3A CN202010730760A CN111895378B CN 111895378 B CN111895378 B CN 111895378B CN 202010730760 A CN202010730760 A CN 202010730760A CN 111895378 B CN111895378 B CN 111895378B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
Abstract
The invention discloses a method for adjusting the steam quantity generated by a fuel gas steam generating device, which comprises the following steps: amount of steam Q to be generated in steam discharge pipePreset of(ii) a The opening of the gas regulating valve on the gas pipeline is regulated to X, the opening of the water regulating valve on the water inlet pipe is regulated to Y, and the steam flow Q is obtained through the steam flow meterIn fact(ii) a Changing different X value and Y value to obtain different steam quantity QIn factEstablishing a steam quantity adjusting equation, and obtaining a correction coefficient through fitting; the set steam quantity Q is required to be reachedPresetAdjusting the X value and the Y value until the steam quantity Q of the steam flowmeterIn factA preset value is reached. In the method, the correction coefficient of the steam flow adjustment equation can be calculated according to the running state under the actual working condition, so that the steam flow adjustment equation is suitable for the steam flow adjustment under the actual working condition, and the method is quick, efficient and accurate and is very suitable for the actual working condition.
Description
Technical Field
The invention relates to the field of steam generation equipment and a control method, in particular to a method for adjusting the steam generation quantity of a fuel gas steam generation device.
Background
The gas steam generating equipment is heat energy conversion equipment which uses gas as fuel, burns the released heat in the equipment through a burner, heats water in a pipeline and vaporizes the water into steam. The water is heated in the drum by the energy released by the combustion of the gaseous fuel in the furnace and the temperature rises and steam under pressure is produced. As the boiling point of water rises along with the rise of pressure, the boiler barrel is sealed, the expansion of water vapor in the boiler barrel is limited to generate pressure to form thermodynamic power, and the water vapor of the boiler is strictly formed by heating the water in the boiler barrel to a constant pressure until saturated water is vaporized, so that the boiler is widely used as an energy source.
In printing and dyeing fabrics, many processes require the use of steam heating during the dyeing process, and often insufficient steam pressure during dyeing results in temperature rise problems, thereby impressing the yield and quality of the print.
With the development of national economy of China, the textile printing and dyeing industry is rapidly developed and is also restricted by resources and environment, and energy conservation and emission reduction become important measures for relieving the resource and environment constraints. The textile industry is used as a high-energy-consumption and high-emission industry, is the key and difficult point of energy conservation and emission reduction in the industrial field, and has great significance in developing energy conservation detection.
Therefore, it is highly desirable to develop a method for adjusting the steam amount generated by the gas steam generator, which can adjust the steam amount to meet the requirements of automatic control while ensuring high efficiency of the gas steam generator.
Disclosure of Invention
The invention provides a method for adjusting the steam quantity generated by a fuel gas steam generating device, which can quickly adjust the steam quantity generated by the fuel gas steam generating device and can realize automatic adjustment.
A method for adjusting the steam quantity generated by a fuel gas steam generating device comprises the following steps:
1) steam quantity Q required to be generated by steam discharge pipePreset of；
2) Opening the gas steam generator, regulating the opening of the gas regulating valve on the gas pipeline to X, regulating the opening of the water regulating valve on the water inlet pipe to Y, and obtaining the steam quantity Q through the steam flow meterIn fact；
3) Changing different X value and Y value to obtain different steam quantity QPractice ofEstablishing a steam quantity adjusting equation, and fitting to obtain a correction coefficient;
4) the amount of steam to be achieved is QPreset ofAmount of steam QPresetAdjusting the X value and the Y value as the left value of the steam flow adjusting equation until the steam flow Q of the steam flow meterPractice ofA preset value is reached.
According to the invention, the correction coefficient of the steam quantity adjusting equation can be calculated according to the running state under the actual working condition (the water pressure of the actual water inlet pipe and the gas pressure of the gas pipeline), so that the steam quantity adjusting equation is suitable for adjusting the steam flow under the actual working condition, and the rapidness, the high efficiency and the accuracy are realized.
In the invention, steaming is carried outSteam quantity QIn factThe steam flow is stable, namely the ratio of the maximum steam flow to the minimum steam flow detected by a steam flow meter is 100-110: 100 within 1 minute, namely the fluctuation range is within 10%;
the X value of aperture and Y value all use fully open 100 as the benchmark, open half like the gas regulating valve, be about to the gas regulating valve aperture on the gas pipeline and adjust 50, the gas regulating valve is fully open, be about to the gas regulating valve aperture on the gas pipeline and adjust 100, open half like the water regulating valve, the aperture that the water regulating valve adjusted on the inlet tube is adjusted 50, the water regulating valve is open half, the aperture that the water regulating valve adjusted on the inlet tube is adjusted 100. Namely, X is 0 to 100, and Y is 0 to 100.
In step 3), the different values of X and Y are transformed at least 3 times.
Establishing a steam quantity adjusting equation, and fitting to obtain a correction coefficient, wherein the correction coefficient specifically comprises the following steps:
establishing a steam flow adjustment equation
And fitting to obtain correction coefficients a, b and c. a is 0.015 to 0.05, b is 5 to 23, and c is-40 to 0.
In general practical process, because the steam quantity adjusting equation has been found to have good effect, after the steam quantity adjusting equation is started stably, the correction coefficients a, b and c of the steam quantity adjusting equation can be rapidly solved by changing different X values and Y values for three times according to the current working condition. The value of the X value and the Y value which are different in the third time is usually taken near the actual opening, for example, the X value of the working state of yesterday is 45-50, the value of the X value which is different in the third time can be 40, 50 and 60, and therefore the obtained correction coefficients a, b and c can be more suitable for the working condition.
In step 4), the steam quantity Q is adjustedPresetAdjusting the X value and the Y value as the values on the left side of the steam flow adjustment equation until the steam flow Q of the steam flow meterIn factThe method for achieving the preset value specifically comprises the following steps:
when the first steam amount QPractice ofGreater or less than the steam quantity QPresetFirst, the value of Y is kept unchanged, and the steam amount Q is adjustedPreset ofThe value of X after the first correction is obtained as the value on the left side of the steam quantity adjusting equation, and then the upper opening degree of the gas pipeline is adjusted to the value of X after the first correction to obtain a second steam quantity QIn factThen keeping the X value after the first correction unchanged, and adding the steam quantity QPreset ofThe value of Y after the second correction is obtained as the value on the left side of the steam flow adjustment equation, then the opening degree of the water quantity adjusting valve on the water inlet pipe is adjusted to the value of Y after the second correction, and the value of X and the value of Y are alternately adjusted until the steam flow Q of the steam flow meterPractice ofReach a preset value QPreset。
When the steam amount Q is adjusted for many timesPractice ofIf the preset value is not reached, returning to the step 3) to re-determine the correction coefficients a, b and c.
The gas steam generating device comprises:
a burner connected to the gas pipeline;
a combustion heating zone disposed on the burner;
a waste heat recovery zone disposed above the combustion heating zone;
the smoke exhaust fan is arranged on the waste heat recovery area;
a preheating pipeline and a water inlet pipe are arranged in the waste heat recovery area;
the combustion heating area is provided with a combustion heating pipeline and a steam discharge pipe;
the water inlet pipe is communicated with the preheating pipeline, the preheating pipeline is communicated with the combustion heating pipeline, and the combustion heating pipeline is communicated with the steam discharge pipe.
In the invention, the burner burns, and directly heats the water in the combustion heating pipeline by fire to vaporize the water and generate steam, and in the combustion process, hot flue gas and residual heat water rise and directly reach the residual heat recovery area to heat the water in the preheating pipeline by using residual heat, so that the water firstly enters the preheating pipeline to be heated by using the residual heat, the heat is recovered, and then the water enters the combustion heating pipeline, and the water in the combustion heating pipeline is directly heated by fire through the burner, so that the water can be vaporized more easily to generate the steam, the heat energy efficiency is improved, and the emission of energy consumption is reduced.
Combustor, the burning zone of heating, waste heat recovery district set gradually in the casing along vertical direction from the bottom up, in the combustion process, steam can be by the transmission from the bottom up, the casing can adopt the heat preservation casing, smoke exhaust fan set up the top of casing, the bottom of casing be equipped with the air inlet, be favorable to gas by the circulation from the bottom up, guarantee the sufficient oxygen of combustor.
The preheating pipeline comprises: the multilayer preheats the pipeline unit, the preheating pipe unit of each layer includes a plurality of end to end connection's U type pipes, makes things convenient for passing through of hot flue gas on the one hand, and on the other hand has great heat exchange area with preheating the pipeline when hot flue gas passes through, can fully preheat the water in the preheating pipeline. The heating surface is large, the smoke resistance is small, the smoke discharging temperature is low, the release of latent heat and sensible heat in smoke is thorough, the heating conversion efficiency is high, the deformation of a tube bank is extremely small, and the service life is long.
The two adjacent layers of preheating pipeline units are communicated, so that water gradually flows from the upper preheating pipeline unit to the lower preheating unit. The preheating pipeline unit has three layers.
The combustion heating conduit comprises: multilayer burning heating pipeline unit, the burning heating pipeline unit of each layer includes a plurality of end-to-end connection's U type pipe for the combustor can have great heat exchange area with burning heating pipeline in the combustion process, can fully heat the water in the burning heating pipeline, makes hydroenergy vaporization vapor more easily, improves heat efficiency, thereby reduces the emission of energy consumption. The heating surface is large, the smoke resistance is small, the smoke discharging temperature is low, the release of latent heat and sensible heat in smoke is thorough, the heating conversion efficiency is high, the deformation of a tube bank is extremely small, and the service life is long. Not only the heat absorption and smoke temperature reduction effects are enhanced, but also the rated evaporation capacity, steam temperature and steam pressure can be guaranteed. The heat energy of the fuel gas is fully utilized in the operation, the heat conversion utilization rate is improved, and the direct current steam technology is ensured to be comprehensively realized.
The adjacent two layers of combustion heating pipeline units are communicated, so that water gradually flows from the upper combustion heating pipeline unit to the lower combustion heating pipeline unit with higher temperature. The combustion heating pipeline unit is three layers.
The water inlet pipe is provided with a water quantity regulating valve which can control the opening of the valve to regulate the water inflow.
The steam discharge pipe is provided with a steam flow meter which can calculate the steam flow of the steam outlet.
The gas pipeline is provided with a gas regulating valve which can control the opening of the valve to regulate the gas inlet amount.
Steam flow meter, water regulation valve, gas governing valve all be connected with the controller, water regulation valve and gas governing valve are controlled according to steam flow meter's data to the controller, and steam flow when steam flow meter is too big, can reduce water regulation valve and gas governing valve's aperture simultaneously, and steam flow when steam flow meter undersize can increase water regulation valve and gas governing valve's aperture simultaneously to provide the vapor of reasonable volume for printing and dyeing technology, reduce the consumption of the energy.
Compared with the prior art, the invention has the following advantages:
in the method for adjusting the steam quantity generated by the gas steam generating device, the correction coefficient of the steam quantity adjusting equation can be calculated according to the running state under the actual working condition (the water pressure of the actual water inlet pipe and the gas pressure of the gas pipeline), so that the steam quantity adjusting equation is suitable for adjusting the steam flow under the actual working condition, and the method is quick, efficient and accurate and is very suitable for the actual working condition.
In the invention, the burner burns, and directly heats the water in the combustion heating pipeline by fire to vaporize the water and generate steam, and in the combustion process, hot flue gas and residual heat water rise and directly reach the residual heat recovery area to heat the water in the preheating pipeline by using residual heat, so that the water firstly enters the preheating pipeline to be heated by using the residual heat, the heat is recovered, and then the water enters the combustion heating pipeline, and the water in the combustion heating pipeline is directly heated by fire through the burner, so that the water can be vaporized more easily to generate the steam, the heat energy efficiency is improved, and the emission of energy consumption is reduced.
According to the invention, the combustion heating pipeline and the preheating pipeline of the plurality of U-shaped pipes connected end to end are adopted, so that the heating surface is large, the smoke resistance is small, the smoke exhaust temperature is low, the release of latent heat and sensible heat in smoke is thorough, the heating conversion efficiency is high, the deformation of a pipe bank is extremely small, and the service life is long. Not only the heat absorption and smoke temperature reduction effects are enhanced, but also the rated evaporation capacity, steam temperature and steam pressure can be guaranteed. The heat energy of the fuel gas is fully utilized in the operation, the heat conversion utilization rate is improved, and the direct current steam technology is ensured to be comprehensively realized.
Drawings
FIG. 1 is a schematic flow chart of the present invention for rapidly adjusting the amount of steam generated by a gas steam generator;
FIG. 2 is a schematic view of the internal structure of the gas steam generator of the present invention;
FIG. 3 is a schematic structural view of a plurality of U-shaped tubes connected end to end in the present invention.
Detailed Description
The method for rapidly adjusting the steam generation amount of the gas steam generator and the gas steam generator according to the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, the method for rapidly adjusting the steam quantity generated by the gas steam generator, which adopts the gas steam generator, comprises the following steps:
1) the printing and dyeing process needs the steam quantity Q required to be generated by the steam discharge pipe 9PresetOn one hand, the method can meet the requirement of the production process, and on the other hand, the method can have constant steam quantity so that the method has good process conditions and keeps stability in the printing and dyeing process;
2) starting the gas steam generating device, adjusting the opening degree of the gas regulating valve 8 on the gas pipeline 7 to X, adjusting the opening degree of the water quantity regulating valve 2 on the water inlet pipe 1 to Y, and obtaining stable steam quantity Q through the steam flowmeter 9Practice of；
The stable steam flow refers to that the ratio of the maximum steam flow to the minimum steam flow detected by a steam flow meter is 100-110: 100 within 1 minute, namely the fluctuation range is within 10%, the ratio can be set manually, if the requirement is higher, the fluctuation range can be within 5%, in the actual process, the requirement is different according to different processes, and generally the ratio is set to be between 5% and 20%;
3) different X values and Y values are converted to obtain different steam quantities QIn factEstablishing a steam flow adjustment equation
Obtaining correction coefficients a, b and c through fitting;
in a general practical process, because the effect of the steam volume adjusting equation is found to be good, after the steam volume adjusting equation is generally started stably, the correction coefficients a, b and c of the steam volume adjusting equation can be quickly obtained by converting three different X values and Y values according to the current working condition, wherein the converted three different X values and Y values are usually taken near the actual opening, and if the X value of the yesterday working state is 45-50, the converted three different X values can be 40, 50 and 60, so that the obtained correction coefficients a, b and c can be more suitable for the working condition.
4) The gas steam generator generates a first stable steam quantity QPractice ofThe set steam quantity Q is required to be reachedPreset；
When the first stable steam amount QIn factGreater or less than the steam quantity QPreset ofFirst, the value of Y is kept unchanged, and the steam amount Q is adjustedPreset ofThe value of X after the first correction is obtained as the value on the left side of the steam flow adjustment equation, and then the opening degree of the gas pipeline is adjusted to the value of X after the first correction to obtain a second stable steam flow QIn factThen keeping the X value after the first correction unchanged, and adding the steam quantity QPreset ofThe value on the left side of the equation of the steam flow adjustment equation is used for obtaining the Y value after the second correction, then the water quantity adjusting valve is used for adjusting the opening degree of the water inlet pipe to the Y value after the second correction, and the X value and the Y value are alternately adjusted until the steam flow Q of the steam flow meterIn factWhen the preset value is reached, the X value and the Y value are adjusted to the target value by one-time alternation, and the adjustment is relatively quick.
And if the target value cannot be adjusted after the adjustment is carried out for multiple times, returning to the step 3) to re-determine the correction coefficients a, b and c.
The aperture X value and the Y value all use fully open 100 as the benchmark, if the gas regulating valve is opened half, be about to the gas regulating valve aperture on the gas pipeline and adjust 50, the gas regulating valve is fully open, be about to the gas regulating valve aperture on the gas pipeline and adjust 100, if the water regulating valve is opened half, the aperture that the water regulating valve adjusted on the inlet tube is adjusted 50, the water regulating valve is opened half, the aperture that the water regulating valve adjusted on the inlet tube is adjusted to 100. Namely, X is 0 to 100, and Y is 0 to 100.
In the actual adjusting process, even if the gas steam generating device is the same device, after the gas steam generating device is started, working conditions at different time can change to a certain extent, if water inlet pressure is different, natural gas flow of a gas pipeline also changes to a certain extent, correction coefficients a, b and c are determined according to actual conditions, generally, a is 0.015-0.05, b is 5-23, and c is-40-0, the adjusting time can be completed within 0.5-1 hour after the gas steam generating device generates steam, compared with the previous manual adjusting, an experienced teacher and an experienced teacher complete within 2-3 hours, the adjusting time needs to be adjusted for many times, workers with less experience may need 4-6 hours, the adjusting times are still many, and the common working conditions change and need to be readjusted. In the actual process, the target value adjusted to within the error of 5% before and after the target value is considered to be adjusted to the target value, and the readjustment is generally started after the error of 10% beyond the target value. Amount of steam Q in the processPractice ofIn practice, are stable values over time. When the method is used, an operator can also perform manual intervention, and if the steam quantity is slightly smaller, the opening degree of the gas regulating valve 8 on the gas pipeline 7 can be increased by 1% or 2%.
As shown in fig. 2, the gas steam generating apparatus includes: a burner 6 connected to a gas pipe 7; a combustion heating zone 5 provided on the burner 6; a waste heat recovery zone 4 arranged on the combustion heating zone 5; and a smoke exhaust fan 3 arranged on the waste heat recovery area 4; a preheating pipeline and a water inlet pipe 1 connected with the preheating pipeline are arranged in the waste heat recovery area 4; the combustion heating zone 5 is provided with a combustion heating conduit and a steam discharge pipe 9 connected to the combustion heating conduit. The water inlet pipe 1 is connected with a preheating pipeline, the preheating pipeline is connected with a combustion heating pipeline, and the combustion heating pipeline is connected with a steam discharge pipe 9.
As shown in fig. 2 and 3, the preheating pipe includes: the multilayer preheats the pipeline unit, the preheating pipe unit of each layer includes a plurality of end to end connection's U type pipe 11, for bank of tubes formula structure, stainless steel, pipe side clearance 5mm, and wall thickness 2mm makes things convenient for passing through of hot flue gas on the one hand, and on the other hand has great heat exchange area with preheating the pipeline when hot flue gas passes through, can fully preheat the water in the preheating pipe. The heating surface is large, the smoke resistance is small, the smoke exhaust temperature is low, the release of latent heat and sensible heat in smoke is thorough, the heating conversion efficiency is high, the deformation of a tube bank is extremely small, and the service life is long. The two adjacent layers of preheating pipeline units are communicated, so that water gradually flows from the upper preheating pipeline unit to the lower preheating unit. The preheating pipeline unit has three layers. Fig. 3 is a plan view of a layer of the preheating pipe unit.
As shown in fig. 2 and 3, the combustion heating duct includes: multilayer burning heating pipeline unit, the burning heating pipeline unit of each layer includes a plurality of end to end connection's U type pipe 11, for bank of tubes formula structure, stainless steel, pipe side clearance 5mm, wall thickness 2mm for combustor 6 can have great heat exchange area with burning heating pipeline in the combustion process, can fully heat the water in the burning heating pipeline, make hydroenergy vaporization steam more easily, improve heat energy efficiency, thereby reduce the emission of energy consumption. The heating surface is large, the smoke resistance is small, the smoke discharging temperature is low, the release of latent heat and sensible heat in smoke is thorough, the heating conversion efficiency is high, the deformation of a tube bank is extremely small, and the service life is long. Not only the heat absorption and smoke temperature reduction effects are enhanced, but also the rated evaporation capacity, steam temperature and steam pressure can be guaranteed. The heat energy of the fuel gas is fully utilized in the operation, the heat conversion utilization rate is improved, and the direct current steam technology is ensured to be comprehensively realized. And the adjacent two layers of combustion heating pipeline units are communicated with each other, so that water gradually flows from the upper combustion heating pipeline unit to the lower combustion heating pipeline unit with higher temperature. The combustion heating pipeline unit is three layers. Fig. 2 is a top view of a layer of combustion heating conduit units.
As shown in fig. 2, the water inlet pipe 1 is provided with a water regulating valve 2, which can control the opening of the valve to regulate the water inflow. The water quantity regulating valve 2 can adopt a valve body matched with a valve positioner.
The steam discharge pipe 9 is provided with a steam flow meter 10, which can calculate the steam flow rate of the steam discharge pipe 9.
The gas pipeline 7 is provided with a gas regulating valve 8, the opening of the valve can be controlled to regulate the gas inlet amount, and the valve body can be matched with a valve positioner.
In the invention, the burner 6 is burnt to directly heat water in the combustion heating pipeline by fire to vaporize the water and generate steam, and in the combustion process, hot flue gas and residual heat water rise and directly reach the waste heat recovery area 4 to heat the water in the preheating pipeline by using waste heat, so that the water firstly enters the preheating pipeline to be heated by using the waste heat and recover heat, and then enters the combustion heating pipeline, and the burner 6 is used to directly heat the water in the combustion heating pipeline by fire, so that the water can be vaporized more easily to generate the steam, the heat energy efficiency is improved, and the emission of energy consumption is reduced.
The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the most preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (5)
1. A method for adjusting the steam quantity generated by a fuel gas steam generating device is characterized in that the fuel gas steam generating device is adopted and comprises the following steps:
a burner connected to the gas pipeline;
a combustion heating zone disposed on the burner;
a waste heat recovery zone disposed above the combustion heating zone;
the smoke exhaust fan is arranged on the waste heat recovery area;
a preheating pipeline and a water inlet pipe are arranged in the waste heat recovery area;
the combustion heating area is provided with a combustion heating pipeline and a steam discharge pipe;
the combustor, the combustion heating zone and the waste heat recovery zone are sequentially arranged in the shell along the vertical direction from bottom to top;
the method comprises the following steps:
1) amount of steam Q to be generated in steam discharge pipePreset；
2) Opening the gas steam generator, regulating the opening of the gas regulating valve on the gas pipeline to X, regulating the opening of the water regulating valve on the water inlet pipe to Y, and obtaining the steam quantity Q through the steam flow meterPractice of；
Transforming the different X and Y values at least 3 times;
establishing a steam quantity adjusting equation, and fitting to obtain a correction coefficient, wherein the correction coefficient specifically comprises the following steps:
establishing a steam quantity adjustment equation
Obtaining correction coefficients a, b and c through fitting;
3) transformation ofDifferent X values and Y values are obtained to obtain different steam quantities QIn factEstablishing a steam quantity adjusting equation, and obtaining a correction coefficient through fitting;
4) the amount of steam to be achieved is QPreset ofAmount of steam QPresetAdjusting the X value and the Y value as the values on the left side of the steam flow adjustment equation until the steam flow Q of the steam flow meterIn factThe preset value is reached, and the method specifically comprises the following steps:
when the first steam amount QPractice ofGreater or less than the steam quantity QPreset ofFirst, the value of Y is kept unchanged, and the steam amount Q is adjustedPreset ofThe value of X after the first correction is obtained as the value on the left side of the steam quantity adjusting equation, and then the upper opening degree of the gas pipeline is adjusted to the value of X after the first correction to obtain a second steam quantity QIn factThen keeping the X value after the first correction unchanged, and adding the steam quantity QPresetThe value of Y after the second correction is obtained as the value on the left side of the steam flow adjustment equation, then the opening degree of the water quantity adjusting valve on the water inlet pipe is adjusted to the value of Y after the second correction, and the value of X and the value of Y are alternately adjusted until the steam flow Q of the steam flow meterIn factReach the preset value QPreset。
2. The method for adjusting the steam quantity generated by the gas steam generator according to claim 1, wherein in the step 2), X is 0-100 and Y is 0-100.
3. The method for adjusting the amount of steam generated by a gas steam generator as claimed in claim 1, wherein the smoke exhaust fan is disposed at the top of the housing, and the bottom of the housing is provided with an air inlet.
4. The method of adjusting the steam generation amount of a gas steam generator as set forth in claim 1, wherein the preheating pipe comprises: the system comprises a plurality of layers of preheating pipeline units, wherein each layer of preheating pipeline unit comprises a plurality of U-shaped pipes connected end to end;
the combustion heating conduit comprises: the multi-layer combustion heating pipeline unit comprises a plurality of U-shaped pipes connected end to end.
5. The method for adjusting the steam generation amount of a gas steam generator as claimed in claim 1, wherein a steam flow meter is provided on the steam discharge pipe;
the water inlet pipe is provided with a water quantity regulating valve;
the gas pipeline is provided with a gas regulating valve.
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| CN106996555A (en) * | 2017-05-09 | 2017-08-01 | 涟源市阳光机械制造有限公司 | System occurs for a kind of automatic fuel gas hot water and steam |
| CN111174242A (en) * | 2020-01-10 | 2020-05-19 | 珠海格力电器股份有限公司 | Gas adjusting method, adjusting device and control system |
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2020
- 2020-07-27 CN CN202010730760.3A patent/CN111895378B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102444U (en) * | 1991-10-06 | 1992-04-22 | 李文伟 | Gas burning steam water heater |
| CN205002086U (en) * | 2015-09-01 | 2016-01-27 | 李玉婵 | Fuel gas and vapor generator |
| CN105716062A (en) * | 2016-02-26 | 2016-06-29 | 西北大学 | Water steam generation device for quantitatively controlling steam amount of outlet and use method |
| CN106996555A (en) * | 2017-05-09 | 2017-08-01 | 涟源市阳光机械制造有限公司 | System occurs for a kind of automatic fuel gas hot water and steam |
| CN111174242A (en) * | 2020-01-10 | 2020-05-19 | 珠海格力电器股份有限公司 | Gas adjusting method, adjusting device and control system |
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Denomination of invention: A method for adjusting the amount of steam produced by gas steam generator Effective date of registration: 20221016 Granted publication date: 20220722 Pledgee: Changxin Zhejiang rural commercial bank Limited by Share Ltd. Pledgor: ZHEJIANG QINGSONG TEXTILE Co.,Ltd. Registration number: Y2022980018566 |
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