WO2019085443A1 - Self-adaptive and self-regulating heat pump-based hot blast stove control system and control method thereof - Google Patents

Self-adaptive and self-regulating heat pump-based hot blast stove control system and control method thereof Download PDF

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WO2019085443A1
WO2019085443A1 PCT/CN2018/087795 CN2018087795W WO2019085443A1 WO 2019085443 A1 WO2019085443 A1 WO 2019085443A1 CN 2018087795 W CN2018087795 W CN 2018087795W WO 2019085443 A1 WO2019085443 A1 WO 2019085443A1
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temperature
air
humidity
real
heat
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PCT/CN2018/087795
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French (fr)
Chinese (zh)
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王玉军
吴小网
随壮壮
刘军
王颖
王天舒
杨奕
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江苏天舒电器有限公司
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Priority to CN201711044225.7A priority patent/CN107883744B/en
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Publication of WO2019085443A1 publication Critical patent/WO2019085443A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001Drying-air generating units, e.g. movable, independent of drying enclosure
    • F26B21/002Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00Preservation of edible seeds, e.g. cereals
    • A23B9/08Drying; Subsequent reconstitution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H4/00Fluid heaters using heat pumps
    • F24H4/06Gas heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT GENERATING MEANS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices or methods
    • F24H9/2064Arrangement or mounting of control or safety devices or methods for air heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06Controlling, e.g. regulating, parameters of gas supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08Humidity
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/06Grains, e.g. cereals, wheat, rice, corn
    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/90Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
    • 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
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85Food storage or conservation, e.g. cooling or drying

Abstract

A self-adaptive and self-regulating heat pump-based hot blast stove control system and a control method thereof may be used for drying grains. The control system comprises a fresh air processing unit, a hot drying air preparation unit, and an after-drying residual hot air processing unit. A temperature sensor, a humidity sensor, and a heat exchanger are provided in the fresh air processing unit. The heat exchanger is adjusted to an adaptive operating mode according to the detected real-time temperature and humidity, and primary fresh air that meets system requirements is made. Incoming air for hot air preparation and residual hot air discharged from a drying tower are formed in the hot drying air preparation unit. Incoming air for heat treatment and exhaust air after the heat treatment are formed in the residual hot air processing unit. The incoming air for heat treatment consists of two parts, one part is the primary fresh air that is made by the fresh air processing unit and meets the system requirements, and the other part is the residual hot air discharged from the drying tower. The exhaust air after the heat treatment is transported in two parts, one part is discharged by means of an exhaust pipe, and the other part is transported for hot air preparation by the hot drying air preparation unit.

Description

一种自适应、自调节式热泵热风炉控制系统及其控制方法Adaptive, self-regulating heat pump hot blast stove control system and control method thereof 技术领域Technical field
本发明属于粮食烘干领域,具体涉及一种自适应、自调节式热泵热风炉控制系统及其控制方法。The invention belongs to the field of grain drying, and particularly relates to an adaptive, self-regulating heat pump hot blast stove control system and a control method thereof.
背景技术Background technique
近年来,我国粮食烘干机械设备行业获得快速的发展,但整体上还是处于市场比较混乱,产品技术落后,企业创新能力差、研发能力较弱,一次性购置成本偏高等阶段,亟需从政策法规、市场层面、技术层面等,推动烘干机行业持续健康和有序发展。“及时烘干,安全入仓”是粮食生产全程机械化解决耕耙播收后的最后一个关键环节,既能起到确保粮食安全的作用,又能得到有效提高粮食品质的功效。现有粮食烘干机大部分采用柴油、谷壳等作为燃料,环境污染重、烘干效率低、安全性能差,对农业安全生产及人身安全保障都存在着很大的隐患,进行替代改造迫在眉睫。In recent years, China's grain drying machinery and equipment industry has achieved rapid development, but overall it is still in a chaotic market, product technology is backward, enterprise innovation ability is poor, research and development ability is weak, and one-time purchase cost is high. Regulations, market level, and technical level will promote the sustainable and orderly development of the dryer industry. “Drying in time and safely entering the warehouse” is the last key link after the mechanization of grain production to solve the problem of cultivation and cultivation. It can not only play a role in ensuring food security, but also can effectively improve the quality of food. Most of the existing grain dryers use diesel oil and chaff as fuel. The environmental pollution is heavy, the drying efficiency is low, and the safety performance is poor. There are great hidden dangers to agricultural safety production and personal safety. It is imminent to carry out substitution reform. .
热泵热风炉因为节能、环保、安全、智能等众多优点,已广泛地取代锅炉,在采暖、热水、烘干等行业突飞猛进地发展,热泵式热风炉通过吸收空气中的免费热量,从而达到通过热泵热风机升温,保证进入粮食烘干塔风温能最高达到70度,代替热风锅炉,为粮食烘干塔提供热源,不仅实现污染物零排放,还比燃油烘干节省费用50%以上,促进企业节本增收、绿色发展。设备操作方便,不需要人员蹲守,节省了人力成本。但是现在市场上推广的热泵热风炉处于刚推广阶段,还有好多创新技术需要创新和突破。Heat pump hot blast stove has widely replaced boilers due to many advantages such as energy saving, environmental protection, safety and intelligence. It has developed rapidly in the industries of heating, hot water and drying. The heat pump type hot blast stove achieves the passage of free heat in the air. The heat pump heats up to ensure that the wind temperature of the grain drying tower can reach 70 degrees, replacing the hot air boiler, providing heat source for the grain drying tower, not only achieving zero discharge of pollutants, but also saving more than 50% of fuel drying. The company will increase its income and green development. The equipment is easy to operate, does not require personnel to guard, and saves labor costs. However, the heat pump hot blast stoves currently on the market are in the stage of promotion, and there are many innovative technologies that require innovation and breakthrough.
目前市场上的热泵热风炉主要需要提高的项目有:1、大量高温高湿的热风被排放,从而导致大量的热量浪费。2、当夏季环境温度高于28度,相对温度超过80%时,此时当出风温度为60度是,出风的相对湿度大于15%,对粮食烘干会产生不利的影响。3、当环境温度低于5度时,空气中的湿度较大,容易在蒸发器上结上厚厚的霜层,从而导致机组不能正常换热,机组出现故障停机。4、烘干塔排出很多废尘,不易进行收集。At present, the main items of heat pump hot blast stoves on the market need to be improved: 1. A large amount of hot air with high temperature and high humidity is discharged, resulting in a large amount of heat wasted. 2. When the summer ambient temperature is higher than 28 degrees and the relative temperature exceeds 80%, when the outlet air temperature is 60 degrees, the relative humidity of the outlet air is greater than 15%, which will have an adverse effect on grain drying. 3. When the ambient temperature is lower than 5 degrees, the humidity in the air is large, and it is easy to form a thick frost layer on the evaporator, which causes the unit to fail to heat exchange normally, and the unit has a shutdown. 4. The drying tower discharges a lot of waste dust, which is difficult to collect.
申请号为:201620783013.5的实用新型申请,公开了一种“粮食干燥塔的热风炉”,燃烧器与炉体的主燃烧室的接口连接,该接口上部的主燃烧室内有前拱,主燃烧室底部埋设二次送风管,二次送风管上铺隔热保温层,在隔热保温层上有高温耐火料层,三次送风箱位于主燃烧室底部,三次风管与三次送风箱连接,在主燃烧室与烟气燃烧室之间 横向设置后拱,在后拱的根部与炉底交接处设置除尘绞龙,在沉灰室底部设置清灰口,主燃烧室有观察口二,在烟气燃烧室内设有压力传感器,在烟桥设有温度传感器。The application of the utility model No. 201620783013.5 discloses a "hot air stove for a grain drying tower", the burner is connected to the main combustion chamber of the furnace body, and the main combustion chamber in the upper part of the interface has a front arch, the main combustion chamber The secondary air supply pipe is buried at the bottom, the thermal insulation layer is laid on the secondary air supply pipe, and the high temperature refractory layer is arranged on the thermal insulation layer. The tertiary air supply box is located at the bottom of the main combustion chamber, the third air duct and the third air supply box. Connection, a rear arch is arranged laterally between the main combustion chamber and the flue gas combustion chamber, a dust removing auger is arranged at the intersection of the root of the rear arch and the bottom of the furnace, a dust cleaning port is arranged at the bottom of the ashes chamber, and the main combustion chamber has a viewing port 2 A pressure sensor is arranged in the flue gas combustion chamber, and a temperature sensor is arranged in the smoke bridge.
发明内容Summary of the invention
为解决以上问题,实现一种综合考虑温度、湿度、灰尘度以及热量浪费度因素的粮食烘干作业,本发明提供了一种自适应、自调节式热泵热风炉控制系统及其控制方法,其技术方案具体如下:In order to solve the above problems, a grain drying operation that comprehensively considers factors of temperature, humidity, dustiness and heat waste is provided, and the present invention provides an adaptive, self-regulating heat pump hot blast stove control system and a control method thereof. The technical plan is as follows:
一种自适应、自调节式热泵热风炉控制系统及其控制方法,用于粮食烘干,其特征在于:在所述控制系统内形成有新风处理单元、烘干用热风制备单元及烘干后余热风处理单元,An adaptive, self-regulating heat pump hot blast stove control system and control method thereof for grain drying, characterized in that: a fresh air processing unit, a drying hot air preparation unit and a drying method are formed in the control system Waste heat treatment unit,
在新风处理单元设有温度传感器、湿度传感器与换热器,通过温度传感器与湿度传感器实现对外界温湿度的实时检测,并根据实时检测的温湿度调节换热器到适配的工作模式,制备出符合系统需求的一次新风;The fresh air processing unit is provided with a temperature sensor, a humidity sensor and a heat exchanger, and the real-time detection of the external temperature and humidity is realized by the temperature sensor and the humidity sensor, and the heat exchanger is adjusted to the adapted working mode according to the real-time detected temperature and humidity, and the preparation is performed. A new wind that meets the needs of the system;
在烘干用热风制备单元形成有制备热风用进风与烘干塔排出的余热风;The hot air preparation unit for drying forms a waste heat wind for preparing the hot air inlet and the drying tower;
在余热风处理单元形成有热处理用进风与热处理后的出风;Forming an airflow after heat treatment and heat treatment in the waste heat treatment unit;
所述热处理用进风由两部分构成,一部分为经由新风处理单元制备出的符合系统需求的一次新风,另一部分为烘干塔排出的余热风;The heat treatment inlet air is composed of two parts, one part is a fresh air prepared by the fresh air treatment unit and meets the system requirement, and the other part is the waste heat wind discharged from the drying tower;
所述热处理后的出风呈两部分输送,一部分经由排风管路排出,另一部分作为供烘干用热风制备单元的制备热风输送;The heat-treated outlet air is transported in two parts, one part is discharged through the exhaust duct, and the other part is used as hot air supply for preparing the hot air preparation unit for drying;
通过以上设置形成新风预调、余热风回收的粮食烘干用控制系统。Through the above settings, a control system for grain drying for fresh air pre-conditioning and waste heat recovery is formed.
根据本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:An adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to the present invention, characterized in that:
所述换热器为水表冷器;设置变频水泵用于抽取地下水供水表冷器作业;The heat exchanger is a water meter cooler; a variable frequency water pump is provided for extracting a ground water supply and cooling device;
所述的“通过温度传感器与湿度传感器实现对外界温湿度的实时检测,并根据实时检测的温湿度调节换热器到适配的工作模式”,具体为:The "real-time detection of the external temperature and humidity by the temperature sensor and the humidity sensor, and the adjustment of the heat exchanger to the adapted working mode according to the temperature and humidity detected in real time", specifically:
SA1:当检测到外界环境温度低于地下水温度时,启动变频水泵与水表冷器进行升温换热作业,以制备出符合系统要求的一次新风;SA1: When detecting that the ambient temperature is lower than the groundwater temperature, start the variable temperature water pump and the water cooler to perform the heat exchange and heat exchange operation to prepare a fresh air that meets the system requirements;
SA2:当检测到外界环境温度高于地下水温度时,停止变频水泵与水表冷器的运行;SA2: When detecting that the ambient temperature is higher than the groundwater temperature, stop the operation of the variable frequency water pump and the water cooler;
SA3:当检测到外界环境温度大于等于25℃且外界相对湿度超过百分之六十时,或当检测到外界环境温度大于等于28℃且外界相对湿度超过百分之六十五时,启动变频水泵与水表冷器进行除湿升温运行。SA3: When the ambient temperature is detected to be greater than or equal to 25 ° C and the relative humidity of the outside is more than 60%, or when the ambient temperature is greater than or equal to 28 ° C and the external relative humidity exceeds 65 percent, the inverter is activated. The pump and the water cooler are dehumidified and heated.
根据本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:An adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to the present invention, characterized in that:
所述烘干用热风制备单元包括有:由压缩机、冷凝器、蒸发器、气液分离器及相应的管路构成的热力循环系统;The drying hot air preparation unit comprises: a thermodynamic circulation system composed of a compressor, a condenser, an evaporator, a gas-liquid separator and a corresponding pipeline;
在所述的余热风处理单元设有紊流热回收器及相应的管路;Providing a turbulent heat recovery device and a corresponding pipeline in the waste heat treatment unit;
所述紊流热回收器设有新风进风口、回风进风口、第一处理风出风口及第二处理风出风口;The turbulent heat recovery device is provided with a fresh air inlet, a return air inlet, a first treatment air outlet and a second treatment air outlet;
所述新风进风口管路连接至换热器的出风口;The fresh air inlet duct is connected to an air outlet of the heat exchanger;
所述回风进风口连接经由余热风处理单元形成的热处理用进风所在管路;The return air inlet is connected to a pipeline of the heat inlet for heat treatment formed by the residual heat treatment unit;
所述第一处理风出口输送的风通过排风管路排至大气;The wind conveyed by the first treatment air outlet is discharged to the atmosphere through the exhaust duct;
所述第二处理风出风口输送的风作为制备热风用进风管路输送至烘干用热风制备单元相应进风口;The wind conveyed by the second treated air outlet is sent to the corresponding air inlet of the drying hot air preparation unit as an air inlet duct for preparing hot air;
所述制备热风用进风作为冷凝器换热用风源,经冷凝器换热后形成烘干用风、管路输送进烘干塔;The hot air is used as a wind source for heat exchange of the condenser, and is heated by the condenser to form a drying wind and a pipeline to be sent to the drying tower;
经由烘干塔烘干作业后产生的余热风经由管路、通过回风进风口输送进紊流热回收器;The waste heat generated after the drying operation of the drying tower is sent to the turbulent heat recovery device through the pipeline and through the return air inlet;
通过工质由压缩机依次进入冷凝器、蒸发器、气液分离器再回到压缩机的热力循环构成用于提供烘干塔烘干用风的热力循环系统。The thermal cycle of the working medium from the compressor to the condenser, the evaporator, the gas-liquid separator and back to the compressor constitutes a thermodynamic circulation system for providing the drying tower drying wind.
根据本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:An adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to the present invention, characterized in that:
设置旋转除尘器,所述旋转除尘器用于将烘干塔排出的余热风除尘后,再作为热处理用进风的构成部分、管道输送至余热风处理单元。A rotary dust remover is provided for dedusting the waste heat exhausted from the drying tower, and then transporting it as a component of the heat inlet for the heat treatment to the waste heat treatment unit.
根据本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:An adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to the present invention, characterized in that:
在紊流热回收器的第一处理风出风口设置两路并联出风管路,一路出风管路用于排出风至大气中;在蒸发器的进风口设置两路并联进风管路,一路进风管路用于输送外界新风;另一路进风管路连接至设置于紊流热回收器的第一处理风出风口的另一路出风管路。Two parallel air outlet pipes are arranged in the first treatment air outlet of the turbulent heat recovery device, and one air outlet pipe is used for discharging wind to the atmosphere; two parallel air inlet pipes are arranged at the air inlet of the evaporator, One inlet air duct is used to transport fresh air from the outside; the other air inlet pipeline is connected to another air outlet duct provided in the first treatment air outlet of the turbulent heat recovery device.
根据本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:An adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to the present invention, characterized in that:
所述压缩机与冷凝器设于一个箱体内,所述制备热风的进风送至箱体内,经由与箱 体内压缩机散热的空气混同后,再作为冷凝器换热用风源。The compressor and the condenser are disposed in a casing, and the inlet air for preparing the hot air is sent to the casing, and is mixed with the air radiated by the compressor in the casing, and then used as a wind source for heat exchange of the condenser.
根据本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:An adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to the present invention, characterized in that:
在水表冷器侧设置第一温度传感器及湿度传感器,所述第一温度传感器用于检测外界环境温度;所述湿度传感器用于检测外界环境湿度;a first temperature sensor and a humidity sensor are disposed on the side of the water cooler, the first temperature sensor is configured to detect an ambient temperature; and the humidity sensor is configured to detect an ambient humidity;
在烘干塔进风口设置第二温度传感器,所述第二温度传感器用于检测送入烘干塔风的温度;a second temperature sensor is disposed at the air inlet of the drying tower, and the second temperature sensor is configured to detect a temperature of the wind sent to the drying tower;
在紊流热回收器的第一处理风出风口设置第三温度传感器,所述第三温度传感器用于检测第一处理风出风口的出风温度;a third temperature sensor is disposed at the first processing air outlet of the turbulent heat recovery device, and the third temperature sensor is configured to detect an outlet air temperature of the first processing air outlet;
设置数据处理单元、用于处理各个温度传感器及湿度传感器检测的数据,并根据检测的数据与设定值的比较生成相应动作指令,Setting a data processing unit for processing data detected by each temperature sensor and the humidity sensor, and generating a corresponding action instruction according to the comparison between the detected data and the set value,
在所述数据单元内设有第一温度比较模块、第二温度比较模块、第三温度比较模块及湿度比较模块,a first temperature comparison module, a second temperature comparison module, a third temperature comparison module, and a humidity comparison module are disposed in the data unit,
在第一温度比较模块内录有第一温度设定值、第二温度设定值、第三温度设定值、第一湿度设定值及第二湿度设定值;Recording, in the first temperature comparison module, a first temperature setting value, a second temperature setting value, a third temperature setting value, a first humidity setting value, and a second humidity setting value;
在第二温度比较模块内录有烘干塔进风湿球温度设定值;The set value of the drying tower inlet air ball temperature is recorded in the second temperature comparison module;
在第三温度比较模块内录有温度下限设定值;Recording a lower temperature setting value in the third temperature comparison module;
根据上述形成的具体控制步序如下:The specific control steps formed according to the above are as follows:
S1:启动压缩机所在的热力循环系统及紊流热回收器,当运行至设定时长时,由数据处理单元接收相应的实时检测数据;S1: starting the thermal circulation system and the turbulent heat recovery device where the compressor is located, and when running to the set time length, the corresponding real-time detection data is received by the data processing unit;
S2:将第一温度传感器检测的实时温度同时送至第一温度比较模块与第三温度比较模块;将湿度传感器检测的实时湿度送至湿度比较模块;S2: sending the real-time temperature detected by the first temperature sensor to the first temperature comparison module and the third temperature comparison module simultaneously; sending the real-time humidity detected by the humidity sensor to the humidity comparison module;
将第二温度传感器检测的实时温度送至第二温度比较模块;Sending the real-time temperature detected by the second temperature sensor to the second temperature comparison module;
将第三温度传感器检测的实时温度送至第三温度比较模块;Sending the real-time temperature detected by the third temperature sensor to the third temperature comparison module;
S3:当送至第一温度比较模块的实时温度值大于第一温度设定值且送至湿度比较模块的实时湿度值大于第一湿度设定值时,启动变频水泵及水表冷器对新风进行除湿作业,并通过送至第二温度比较模块的实时温度值与烘干塔进风湿球温度设定值的实时比较计算出变频水泵的实时变频调节量;S3: when the real-time temperature value sent to the first temperature comparison module is greater than the first temperature setting value and the real-time humidity value sent to the humidity comparison module is greater than the first humidity setting value, the frequency conversion water pump and the water meter cooler are started to perform fresh air Dehumidification operation, and real-time frequency conversion adjustment of the variable frequency water pump is calculated by real-time comparison between the real-time temperature value sent to the second temperature comparison module and the set value of the inlet tower wet air ball temperature;
S4:当送至第一温度比较模块的实时温度值大于第二温度设定值且送至湿度比较模块的实时湿度值大于第二湿度设定值时,启动变频水泵及水表冷器对新风进行除湿作业,并通过送至第二温度比较模块的实时温度值与烘干塔进风湿球温度设定值的实时比 较计算出变频水泵的实时变频调节量;S4: when the real-time temperature value sent to the first temperature comparison module is greater than the second temperature setting value and the real-time humidity value sent to the humidity comparison module is greater than the second humidity setting value, the frequency conversion water pump and the water meter cooler are started to perform fresh air Dehumidification operation, and real-time frequency conversion adjustment of the variable frequency water pump is calculated by real-time comparison between the real-time temperature value sent to the second temperature comparison module and the set value of the inlet tower wet air ball temperature;
S5:当送至第一温度比较模块的实时温度值小于第三温度设定值时,启动变频水泵及水表冷器进行换热作业;S5: when the real-time temperature value sent to the first temperature comparison module is less than the third temperature setting value, start the frequency conversion water pump and the water meter cooler to perform heat exchange operation;
S6:当送至第三温度比较模块的经由第一温度传感器检测的实时检测值大于送至第三温度比较模块的经由第三温度传感器检测的实时检测值时,开启紊流热回收器第一处理风出风口通向大气的管路进行排风作业,同时开启设于蒸发器的进风口的用于输送外界新风的管路进行新风输入。S6: Turn on the turbulent heat recovery device when the real-time detection value sent to the third temperature comparison module via the first temperature sensor is greater than the real-time detection value sent to the third temperature comparison module via the third temperature sensor. The air outlet to the atmosphere is processed to perform the air exhaust operation, and the pipeline for conveying the fresh air at the air inlet of the evaporator is opened to perform fresh air input.
本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,The invention relates to an adaptive, self-regulating heat pump hot blast stove control system and a control method thereof,
首先,采用紊流热回收技术,将通过烘干塔的35度左右的高焓值的湿热空气与通过水表冷器的18度左右的干燥冷风进行紊流换热,从而将35度的高湿热风热回回收降为23度,18度左右的干燥冷风升高到30度。通过此项技术,能将制热能力提升30%左右,机组的功率却增加,节能效果更明显。First, using turbulent heat recovery technology, the turbulent heat exchange between the high-enthalpy hot air of about 35 degrees through the drying tower and the dry cold air of about 18 degrees through the water cooler is used, so that 35 degrees of high humidity heat is obtained. The wind heat recovery is reduced to 23 degrees, and the dry cold wind of about 18 degrees is raised to 30 degrees. Through this technology, the heating capacity can be increased by about 30%, the power of the unit is increased, and the energy saving effect is more obvious.
其次,当环境温度低于3摄氏度时,蒸发器如果直接从室外环境吸收热量,蒸发器表面会出现结霜,从而机组不能正常运行。通过外部的,将紊流热交换后的23度左右的空气送给蒸发器,机组的蒸发温度会大幅提高,蒸发器表面不但不会出现结霜的现象,机组的制热能力也能大幅提高。Secondly, when the ambient temperature is lower than 3 degrees Celsius, if the evaporator absorbs heat directly from the outdoor environment, frost will appear on the surface of the evaporator, and the unit will not operate normally. Through the external, the air of about 23 degrees after the turbulent heat exchange is sent to the evaporator, the evaporation temperature of the unit will be greatly improved, and the surface of the evaporator will not be frosted, and the heating capacity of the unit can be greatly improved. .
再次,采用水表冷器预热低温热风技术,将地下水中的热量充分回收到需加热的冷风中,提高低环境温度时,机组的制热能力。在夏季高温高湿时,通过水表冷器对高温热风进行除湿,保证送入烘干塔的高温热风湿球相对湿度低于12%,同时由于进入冷凝器的风为除湿后的相对干燥的空气,空气密度变低,这样通过冷凝器的热风温度会进一步提高;其中,水泵根据变工况的各种要求,创新出变频水泵智能控制方案,满足在变工况机组能高效、安全运行。Thirdly, the water cooler is used to preheat the low-temperature hot air technology, and the heat in the groundwater is fully recovered into the cold air to be heated, and the heating capacity of the unit is improved when the ambient temperature is low. In the summer when the temperature is high and high humidity, the high temperature hot air is dehumidified by the water cooler to ensure that the relative humidity of the high temperature hot air ball fed to the drying tower is less than 12%, and the wind entering the condenser is the relatively dry air after dehumidification. The air density becomes lower, so the hot air temperature passing through the condenser will be further improved; among them, the water pump is innovative according to various requirements of variable working conditions, and the intelligent control scheme of the variable frequency water pump is innovated to meet the requirements of efficient and safe operation of the unit under variable working conditions.
然后,采用旋转除尘技术,将烘干塔出来的灰尘进行集中处理收集,提高进入蒸发器的风的洁净度,同时由于灰尘回收,可以有效地减少对大气的固体污染。Then, using the rotary dust removal technology, the dust from the drying tower is collected and collected to improve the cleanliness of the wind entering the evaporator, and at the same time, due to the dust recovery, the solid pollution to the atmosphere can be effectively reduced.
最后,进风腔经过压缩机所在的制冷系统箱体,能对压缩机进行有效散热,同时对进入冷凝器的进风进行预升温。Finally, the inlet air chamber passes through the refrigeration system box where the compressor is located, which can effectively dissipate the compressor and preheat the inlet air entering the condenser.
综上所述,本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,提供了一种综合考虑温度、湿度、灰尘度以及热量浪费度四因素的粮食烘干控制系统及相应的控制方法,实现粮食烘干作业的半自动化作业,保证烘干效果同时提高节能型与机组运行可靠性。In summary, the adaptive, self-regulating heat pump hot blast stove control system and the control method thereof provide a grain drying control system considering four factors of temperature, humidity, dust degree and heat waste. And the corresponding control method to achieve semi-automatic operation of grain drying operation to ensure the drying effect and improve the energy-saving type and unit operation reliability.
附图说明DRAWINGS
图1为本发明的系统内风的路径示意图;Figure 1 is a schematic view showing the path of the wind in the system of the present invention;
图2为本发明中的新风处理单元工作模式流程图;2 is a flow chart of the working mode of the fresh air processing unit in the present invention;
图3为本发明的具体控制步序图;Figure 3 is a specific control step diagram of the present invention;
图4为本发明中设于蒸发器端的进风管路结构示意图。4 is a schematic view showing the structure of an air inlet pipe provided at an evaporator end in the present invention.
具体实施方式Detailed ways
下面,根据说明书附图和具体实施方式对本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法作进一步具体说明。Hereinafter, an adaptive, self-regulating heat pump hot blast stove control system and a control method thereof according to the present invention will be further described in detail based on the drawings and specific embodiments.
一种自适应、自调节式热泵热风炉控制系统及其控制方法,用于粮食烘干,其特征在于:在所述控制系统内形成有新风处理单元、烘干用热风制备单元及烘干后余热风处理单元,An adaptive, self-regulating heat pump hot blast stove control system and control method thereof for grain drying, characterized in that: a fresh air processing unit, a drying hot air preparation unit and a drying method are formed in the control system Waste heat treatment unit,
在新风处理单元设有温度传感器、湿度传感器与换热器,通过温度传感器与湿度传感器实现对外界温湿度的实时检测,并根据实时检测的温湿度调节换热器到适配的工作模式,制备出符合系统需求的一次新风;The fresh air processing unit is provided with a temperature sensor, a humidity sensor and a heat exchanger, and the real-time detection of the external temperature and humidity is realized by the temperature sensor and the humidity sensor, and the heat exchanger is adjusted to the adapted working mode according to the real-time detected temperature and humidity, and the preparation is performed. A new wind that meets the needs of the system;
在烘干用热风制备单元形成有制备热风用进风与烘干塔排出的余热风;The hot air preparation unit for drying forms a waste heat wind for preparing the hot air inlet and the drying tower;
在余热风处理单元形成有热处理用进风与热处理后的出风;Forming an airflow after heat treatment and heat treatment in the waste heat treatment unit;
所述热处理用进风由两部分构成,一部分为经由新风处理单元制备出的符合系统需求的一次新风,另一部分为烘干塔排出的余热风;The heat treatment inlet air is composed of two parts, one part is a fresh air prepared by the fresh air treatment unit and meets the system requirement, and the other part is the waste heat wind discharged from the drying tower;
所述热处理后的出风呈两部分输送,一部分经由排风管路排出,另一部分作为供烘干用热风制备单元的制备热风输送;The heat-treated outlet air is transported in two parts, one part is discharged through the exhaust duct, and the other part is used as hot air supply for preparing the hot air preparation unit for drying;
通过以上设置形成新风预调、余热风回收的粮食烘干用控制系统。Through the above settings, a control system for grain drying for fresh air pre-conditioning and waste heat recovery is formed.
其中,among them,
所述换热器为水表冷器;设置变频水泵用于抽取地下水供水表冷器作业;The heat exchanger is a water meter cooler; a variable frequency water pump is provided for extracting a ground water supply and cooling device;
所述的“通过温度传感器与湿度传感器实现对外界温湿度的实时检测,并根据实时检测的温湿度调节换热器到适配的工作模式”,具体为(如图2所示):The "real-time detection of the external temperature and humidity by the temperature sensor and the humidity sensor, and the adjustment of the heat exchanger to the adapted working mode according to the temperature and humidity detected in real time", specifically (as shown in FIG. 2):
SA1:当检测到外界环境温度低于地下水温度时,启动变频水泵与水表冷器进行升温换热作业,以制备出符合系统要求的一次新风;SA1: When detecting that the ambient temperature is lower than the groundwater temperature, start the variable temperature water pump and the water cooler to perform the heat exchange and heat exchange operation to prepare a fresh air that meets the system requirements;
SA2:当检测到外界环境温度高于地下水温度时,停止变频水泵与水表冷器的运行;SA2: When detecting that the ambient temperature is higher than the groundwater temperature, stop the operation of the variable frequency water pump and the water cooler;
SA3:当检测到外界环境温度大于等于25℃且外界相对湿度超过百分之六十时,或当检测到外界环境温度大于等于28℃且外界相对湿度超过百分之六十五时,启动变频水 泵与水表冷器进行除湿升温运行。SA3: When the ambient temperature is detected to be greater than or equal to 25 ° C and the relative humidity of the outside is more than 60%, or when the ambient temperature is greater than or equal to 28 ° C and the external relative humidity exceeds 65 percent, the inverter is activated. The pump and the water cooler are dehumidified and heated.
其中,among them,
所述烘干用热风制备单元包括有:由压缩机、冷凝器、蒸发器、气液分离器及相应的管路构成的热力循环系统;The drying hot air preparation unit comprises: a thermodynamic circulation system composed of a compressor, a condenser, an evaporator, a gas-liquid separator and a corresponding pipeline;
在所述的余热风处理单元设有紊流热回收器及相应的管路;Providing a turbulent heat recovery device and a corresponding pipeline in the waste heat treatment unit;
所述紊流热回收器设有新风进风口、回风进风口、第一处理风出风口及第二处理风出风口;The turbulent heat recovery device is provided with a fresh air inlet, a return air inlet, a first treatment air outlet and a second treatment air outlet;
所述新风进风口管路连接至换热器的出风口;The fresh air inlet duct is connected to an air outlet of the heat exchanger;
所述回风进风口连接经由余热风处理单元形成的热处理用进风所在管路;The return air inlet is connected to a pipeline of the heat inlet for heat treatment formed by the residual heat treatment unit;
所述第一处理风出口输送的风通过排风管路排至大气;The wind conveyed by the first treatment air outlet is discharged to the atmosphere through the exhaust duct;
所述第二处理风出风口输送的风作为制备热风用进风管路输送至烘干用热风制备单元相应进风口;The wind conveyed by the second treated air outlet is sent to the corresponding air inlet of the drying hot air preparation unit as an air inlet duct for preparing hot air;
所述制备热风用进风作为冷凝器换热用风源,经冷凝器换热后形成烘干用风、管路输送进烘干塔;The hot air is used as a wind source for heat exchange of the condenser, and is heated by the condenser to form a drying wind and a pipeline to be sent to the drying tower;
经由烘干塔烘干作业后产生的余热风经由管路、通过回风进风口输送进紊流热回收器;The waste heat generated after the drying operation of the drying tower is sent to the turbulent heat recovery device through the pipeline and through the return air inlet;
通过工质由压缩机依次进入冷凝器、蒸发器、气液分离器再回到压缩机的热力循环构成用于提供烘干塔烘干用风的热力循环系统。The thermal cycle of the working medium from the compressor to the condenser, the evaporator, the gas-liquid separator and back to the compressor constitutes a thermodynamic circulation system for providing the drying tower drying wind.
其中,among them,
设置旋转除尘器,所述旋转除尘器用于将烘干塔排出的余热风除尘后,再作为热处理用进风的构成部分、管道输送至余热风处理单元。A rotary dust remover is provided for dedusting the waste heat exhausted from the drying tower, and then transporting it as a component of the heat inlet for the heat treatment to the waste heat treatment unit.
其中,among them,
在紊流热回收器的第一处理风出风口设置两路并联出风管路,一路出风管路用于排出风至大气中;在蒸发器的进风口设置两路并联进风管路,一路进风管路用于输送外界新风;另一路进风管路连接至设置于紊流热回收器的第一处理风出风口的另一路出风管路。Two parallel air outlet pipes are arranged in the first treatment air outlet of the turbulent heat recovery device, and one air outlet pipe is used for discharging wind to the atmosphere; two parallel air inlet pipes are arranged at the air inlet of the evaporator, One inlet air duct is used to transport fresh air from the outside; the other air inlet pipeline is connected to another air outlet duct provided in the first treatment air outlet of the turbulent heat recovery device.
其中,among them,
所述压缩机与冷凝器设于一个箱体内,所述制备热风的进风送至箱体内,经由与箱体内压缩机散热的空气混同后,再作为冷凝器换热用风源。The compressor and the condenser are disposed in a box body, and the inlet air for preparing the hot air is sent to the tank body, and is mixed with the air dissipated by the compressor in the box body, and then used as a wind source for heat exchange of the condenser.
其中,among them,
在水表冷器侧设置第一温度传感器及湿度传感器,所述第一温度传感器用于检测外 界环境温度;所述湿度传感器用于检测外界环境湿度;a first temperature sensor and a humidity sensor are disposed on the water cooler side, wherein the first temperature sensor is configured to detect an ambient temperature; and the humidity sensor is configured to detect an ambient humidity;
在烘干塔进风口设置第二温度传感器,所述第二温度传感器用于检测送入烘干塔风的温度;a second temperature sensor is disposed at the air inlet of the drying tower, and the second temperature sensor is configured to detect a temperature of the wind sent to the drying tower;
在紊流热回收器的第一处理风出风口设置第三温度传感器,所述第三温度传感器用于检测第一处理风出风口的出风温度;a third temperature sensor is disposed at the first processing air outlet of the turbulent heat recovery device, and the third temperature sensor is configured to detect an outlet air temperature of the first processing air outlet;
设置数据处理单元、用于处理各个温度传感器及湿度传感器检测的数据,并根据检测的数据与设定值的比较生成相应动作指令,Setting a data processing unit for processing data detected by each temperature sensor and the humidity sensor, and generating a corresponding action instruction according to the comparison between the detected data and the set value,
在所述数据单元内设有第一温度比较模块、第二温度比较模块、第三温度比较模块及湿度比较模块,a first temperature comparison module, a second temperature comparison module, a third temperature comparison module, and a humidity comparison module are disposed in the data unit,
在第一温度比较模块内录有第一温度设定值、第二温度设定值、第三温度设定值、第一湿度设定值及第二湿度设定值;Recording, in the first temperature comparison module, a first temperature setting value, a second temperature setting value, a third temperature setting value, a first humidity setting value, and a second humidity setting value;
在第二温度比较模块内录有烘干塔进风湿球温度设定值;The set value of the drying tower inlet air ball temperature is recorded in the second temperature comparison module;
在第三温度比较模块内录有温度下限设定值;Recording a lower temperature setting value in the third temperature comparison module;
根据上述形成的具体控制步序如下(如图3所示):The specific control steps formed according to the above are as follows (as shown in Figure 3):
S1:启动压缩机所在的热力循环系统及紊流热回收器,当运行至设定时长时,由数据处理单元接收相应的实时检测数据;S1: starting the thermal circulation system and the turbulent heat recovery device where the compressor is located, and when running to the set time length, the corresponding real-time detection data is received by the data processing unit;
S2:将第一温度传感器检测的实时温度同时送至第一温度比较模块与第三温度比较模块;将湿度传感器检测的实时湿度送至湿度比较模块;S2: sending the real-time temperature detected by the first temperature sensor to the first temperature comparison module and the third temperature comparison module simultaneously; sending the real-time humidity detected by the humidity sensor to the humidity comparison module;
将第二温度传感器检测的实时温度送至第二温度比较模块;Sending the real-time temperature detected by the second temperature sensor to the second temperature comparison module;
将第三温度传感器检测的实时温度送至第三温度比较模块;Sending the real-time temperature detected by the third temperature sensor to the third temperature comparison module;
S3:当送至第一温度比较模块的实时温度值大于第一温度设定值且送至湿度比较模块的实时湿度值大于第一湿度设定值时,启动变频水泵及水表冷器对新风进行除湿作业,并通过送至第二温度比较模块的实时温度值与烘干塔进风湿球温度设定值的实时比较计算出变频水泵的实时变频调节量;S3: when the real-time temperature value sent to the first temperature comparison module is greater than the first temperature setting value and the real-time humidity value sent to the humidity comparison module is greater than the first humidity setting value, the frequency conversion water pump and the water meter cooler are started to perform fresh air Dehumidification operation, and real-time frequency conversion adjustment of the variable frequency water pump is calculated by real-time comparison between the real-time temperature value sent to the second temperature comparison module and the set value of the inlet tower wet air ball temperature;
S4:当送至第一温度比较模块的实时温度值大于第二温度设定值且送至湿度比较模块的实时湿度值大于第二湿度设定值时,启动变频水泵及水表冷器对新风进行除湿作业,并通过送至第二温度比较模块的实时温度值与烘干塔进风湿球温度设定值的实时比较计算出变频水泵的实时变频调节量;S4: when the real-time temperature value sent to the first temperature comparison module is greater than the second temperature setting value and the real-time humidity value sent to the humidity comparison module is greater than the second humidity setting value, the frequency conversion water pump and the water meter cooler are started to perform fresh air Dehumidification operation, and real-time frequency conversion adjustment of the variable frequency water pump is calculated by real-time comparison between the real-time temperature value sent to the second temperature comparison module and the set value of the inlet tower wet air ball temperature;
S5:当送至第一温度比较模块的实时温度值小于第三温度设定值时,启动变频水泵及水表冷器进行换热作业;S5: when the real-time temperature value sent to the first temperature comparison module is less than the third temperature setting value, start the frequency conversion water pump and the water meter cooler to perform heat exchange operation;
S6:当送至第三温度比较模块的经由第一温度传感器检测的实时检测值大于送至第 三温度比较模块的经由第三温度传感器检测的实时检测值时,开启紊流热回收器第一处理风出风口通向大气的管路进行排风作业,同时开启设于蒸发器的进风口的用于输送外界新风的管路进行新风输入。S6: Turn on the turbulent heat recovery device when the real-time detection value sent to the third temperature comparison module via the first temperature sensor is greater than the real-time detection value sent to the third temperature comparison module via the third temperature sensor. The air outlet to the atmosphere is processed to perform the air exhaust operation, and the pipeline for conveying the fresh air at the air inlet of the evaporator is opened to perform fresh air input.
工作过程概述:Overview of the work process:
热力循环系统工作流程:Thermal cycle system workflow:
压缩机吸入低温低压的气态制冷剂,通过压缩做功后变为高温高压的气态,排入到冷凝器进行冷凝降温变成液态,散发的热量转移到被加热的空气中,液态制冷剂通过节流阀进行节流降压,节流降压后的制冷剂流入到蒸发器中,通过蒸发器吸收空气中的热量变为气态制冷剂流入到汽液分离器中,再被压缩机口吸入,如此形成一个闭式热力循环系统。The compressor draws in a low-temperature and low-pressure gaseous refrigerant, which is converted into a high-temperature and high-pressure gas state after being compressed, discharged into a condenser to be condensed and cooled to become a liquid state, and the emitted heat is transferred to the heated air, and the liquid refrigerant passes through the throttling. The valve is throttled and depressurized, and the refrigerant after throttling and depressurization flows into the evaporator, and the heat in the air is absorbed by the evaporator to become a gaseous refrigerant flowing into the vapor-liquid separator, and then sucked into the compressor port, so Form a closed thermodynamic cycle system.
风系统工作流程:新风通过进风机送入到水表冷器,再进入紊流热回收器进行热回收,再通过压缩机腔体对压缩机进行降温,到达冷凝器进行升温到烘干塔需求的温度,通过烘干塔对粮食进行烘干后,中温高湿的气体到达旋转除尘器进行除尘,在去除灰尘的同时对灰尘进行集中收集,然后送入到紊流热回收器和经过水表冷器的新风进行节能热回收,通过紊流热回收器后的风分为两个通道,选择性的通过排风机和排风阀通过出风排出,另一部分与通过进风阀的风一起进入蒸发器,通过蒸发器吸收后的风直接通过出风管路,由吸风机排出。Wind system work flow: fresh air is sent to the water cooler through the inlet fan, then enters the turbulent heat recovery device for heat recovery, and then the compressor is cooled by the compressor cavity, and the condenser is heated to the demand of the drying tower. Temperature, after drying the grain through the drying tower, the medium-temperature and high-humidity gas reaches the rotary dust collector for dust removal, collects the dust while removing the dust, and then sends it to the turbulent heat recovery device and passes through the water meter cooler. The fresh air is energy-saving heat recovery, and the wind after passing through the turbulent heat recovery device is divided into two channels, which are selectively discharged through the exhaust air through the exhaust fan and the exhaust valve, and the other portion enters the evaporator together with the wind passing through the air inlet valve. The wind absorbed by the evaporator passes directly through the air outlet pipe and is discharged by the suction fan.
水系统工作流程:通过水泵,将地下水送放到水表冷器,达到不同环境温度时,有时需要除湿,有时间需进行升温的目的。Water system work flow: through the water pump, the groundwater is sent to the water cooler. When it reaches different ambient temperatures, it sometimes needs to be dehumidified, and there is time to heat up.
机组开停,此时水泵处于停止状态,压缩机开启,进行制热热流程,当机组开机15分钟后,此时系统已经达到稳定的运行工作状态,记录冷凝器出风口温度。When the unit starts and stops, the pump is stopped, the compressor is turned on, and the heating and heating process is carried out. After the unit is turned on for 15 minutes, the system has reached a stable operating state and the condenser outlet temperature is recorded.
除湿升温模式,当送风机口干球温度≥25度,且相对湿度超过60%时或干球温度≥28度且相对湿度超过65%时,开启循环水磁,将地下水抽入水表冷器,利用水表冷器对送风机的风进行除湿,自动调节水泵的运行频率,通过检测比较冷凝器出风口的温度,在保证冷凝器出风口的出风湿球温度不高于12%的同时,得到一个最高的冷凝器出风口干球温度。从而达到最节能的热风烘干状态。Dehumidification heating mode, when the dry bulb temperature of the blower port is ≥25 degrees, and the relative humidity exceeds 60% or the dry bulb temperature is ≥28 degrees and the relative humidity exceeds 65%, the circulating water magnetism is turned on, and the groundwater is pumped into the water cooler to utilize The water cooler cools the wind of the blower, automatically adjusts the running frequency of the water pump, and compares the temperature of the air outlet of the condenser by detecting and comparing the temperature of the air outlet of the condenser outlet to a maximum of 12%. The dry bulb temperature of the condenser outlet. Thereby achieving the most energy-saving hot air drying state.
升温模式,除湿升温模式外的工况都是升温模式,此模式下分为两种工作模式,水表冷升温模式和单升温模式,当地下水的温度超过外界环境温度时,此时运行表冷升温模式,此时水泵以最高频率运行,将地下水的热量通过水表冷器转移到送风机中。当地下水温度低于环境温度时,运行单升温模式,此时水泵停止运行。The heating mode and the dehumidification heating mode are all heating modes. In this mode, there are two working modes, the water meter cooling heating mode and the single heating mode. When the groundwater temperature exceeds the external ambient temperature, the running table is cooled. Mode, at which point the pump operates at the highest frequency and transfers the heat of the groundwater through the water cooler to the blower. When the groundwater temperature is lower than the ambient temperature, the single heating mode is operated, and the pump stops running.
机组运行过程中,如果检测到紊流热回收器出风口温度低于外界环境温度时,打开 排风机,将经过紊流热回收装置低品位风排出,同时打开蒸发器送风管路的进风阀,将新风通过负压自动引入。During the operation of the unit, if the temperature of the air outlet of the turbulent heat recovery unit is detected to be lower than the ambient temperature, the exhaust fan is opened, and the low-grade wind is discharged through the turbulent heat recovery device, and the air inlet of the evaporator air supply line is opened. The valve automatically introduces fresh air through negative pressure.
本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,The invention relates to an adaptive, self-regulating heat pump hot blast stove control system and a control method thereof,
首先,采用紊流热回收技术,将通过烘干塔的35度左右的高焓值的湿热空气与通过水表冷器的18度左右的干燥冷风进行紊流换热,从而将35度的高湿热风热回回收降为23度,18度左右的干燥冷风升高到30度。通过此项技术,能将制热能力提升30%左右,机组的功率却增加,节能效果更明显。First, using turbulent heat recovery technology, the turbulent heat exchange between the high-enthalpy hot air of about 35 degrees through the drying tower and the dry cold air of about 18 degrees through the water cooler is used, so that 35 degrees of high humidity heat is obtained. The wind heat recovery is reduced to 23 degrees, and the dry cold wind of about 18 degrees is raised to 30 degrees. Through this technology, the heating capacity can be increased by about 30%, the power of the unit is increased, and the energy saving effect is more obvious.
其次,当环境温度低于3摄氏度时,蒸发器如果直接从室外环境吸收热量,蒸发器表面会出现结霜,从而机组不能正常运行。通过外部的,将紊流热交换后的23度左右的空气送给蒸发器,机组的蒸发温度会大幅提高,蒸发器表面不但不会出现结霜的现象,机组的制热能力也能大幅提高。Secondly, when the ambient temperature is lower than 3 degrees Celsius, if the evaporator absorbs heat directly from the outdoor environment, frost will appear on the surface of the evaporator, and the unit will not operate normally. Through the external, the air of about 23 degrees after the turbulent heat exchange is sent to the evaporator, the evaporation temperature of the unit will be greatly improved, and the surface of the evaporator will not be frosted, and the heating capacity of the unit can be greatly improved. .
再次,采用水表冷器预热低温热风技术,将地下水中的热量充分回收到需加热的冷风中,提高低环境温度时,机组的制热能力。在夏季高温高湿时,通过水表冷器对高温热风进行除湿,保证送入烘干塔的高温热风湿球相对湿度低于12%,同时由于进入冷凝器的风为除湿后的相对干燥的空气,空气密度变低,这样通过冷凝器的热风温度会进一步提高;其中,水泵根据变工况的各种要求,创新出变频水泵智能控制方案,满足在变工况机组能高效、安全运行。Thirdly, the water cooler is used to preheat the low-temperature hot air technology, and the heat in the groundwater is fully recovered into the cold air to be heated, and the heating capacity of the unit is improved when the ambient temperature is low. In the summer when the temperature is high and high humidity, the high temperature hot air is dehumidified by the water cooler to ensure that the relative humidity of the high temperature hot air ball fed to the drying tower is less than 12%, and the wind entering the condenser is the relatively dry air after dehumidification. The air density becomes lower, so the hot air temperature passing through the condenser will be further improved; among them, the water pump is innovative according to various requirements of variable working conditions, and the intelligent control scheme of the variable frequency water pump is innovated to meet the requirements of efficient and safe operation of the unit under variable working conditions.
然后,采用旋转除尘技术,将烘干塔出来的灰尘进行集中处理收集,提高进入蒸发器的风的洁净度,同时由于灰尘回收,可以有效地减少对大气的固体污染。Then, using the rotary dust removal technology, the dust from the drying tower is collected and collected to improve the cleanliness of the wind entering the evaporator, and at the same time, due to the dust recovery, the solid pollution to the atmosphere can be effectively reduced.
最后,进风腔经过压缩机所在的制冷系统箱体,能对压缩机进行有效散热,同时对进入冷凝器的进风进行预升温。Finally, the inlet air chamber passes through the refrigeration system box where the compressor is located, which can effectively dissipate the compressor and preheat the inlet air entering the condenser.
综上所述,本发明的一种自适应、自调节式热泵热风炉控制系统及其控制方法,提供了一种综合考虑温度、湿度、灰尘度以及热量浪费度四因素的粮食烘干控制系统及相应的控制方法,实现粮食烘干作业的半自动化作业,保证烘干效果同时提高节能型与机组运行可靠性。In summary, the adaptive, self-regulating heat pump hot blast stove control system and the control method thereof provide a grain drying control system considering four factors of temperature, humidity, dust degree and heat waste. And the corresponding control method to achieve semi-automatic operation of grain drying operation to ensure the drying effect and improve the energy-saving type and unit operation reliability.

Claims (7)

  1. 一种自适应、自调节式热泵热风炉控制系统及其控制方法,用于粮食烘干,其特征在于:在所述控制系统内形成有新风处理单元、烘干用热风制备单元及烘干后余热风处理单元,An adaptive, self-regulating heat pump hot blast stove control system and control method thereof for grain drying, characterized in that: a fresh air processing unit, a drying hot air preparation unit and a drying method are formed in the control system Waste heat treatment unit,
    在新风处理单元设有温度传感器、湿度传感器与换热器,通过温度传感器与湿度传感器实现对外界温湿度的实时检测,并根据实时检测的温湿度调节换热器到适配的工作模式,制备出符合系统需求的一次新风;The fresh air processing unit is provided with a temperature sensor, a humidity sensor and a heat exchanger, and the real-time detection of the external temperature and humidity is realized by the temperature sensor and the humidity sensor, and the heat exchanger is adjusted to the adapted working mode according to the real-time detected temperature and humidity, and the preparation is performed. A new wind that meets the needs of the system;
    在烘干用热风制备单元形成有制备热风用进风与烘干塔排出的余热风;The hot air preparation unit for drying forms a waste heat wind for preparing the hot air inlet and the drying tower;
    在余热风处理单元形成有热处理用进风与热处理后的出风;Forming an airflow after heat treatment and heat treatment in the waste heat treatment unit;
    所述热处理用进风由两部分构成,一部分为经由新风处理单元制备出的符合系统需求的一次新风,另一部分为烘干塔排出的余热风;The heat treatment inlet air is composed of two parts, one part is a fresh air prepared by the fresh air treatment unit and meets the system requirement, and the other part is the waste heat wind discharged from the drying tower;
    所述热处理后的出风呈两部分输送,一部分经由排风管路排出,另一部分作为供烘干用热风制备单元的制备热风输送;The heat-treated outlet air is transported in two parts, one part is discharged through the exhaust duct, and the other part is used as hot air supply for preparing the hot air preparation unit for drying;
    通过以上设置形成新风预调、余热风回收的粮食烘干用控制系统。Through the above settings, a control system for grain drying for fresh air pre-conditioning and waste heat recovery is formed.
  2. 根据权利要求1所述的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:The adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to claim 1, wherein:
    所述换热器为水表冷器;设置变频水泵用于抽取地下水供水表冷器作业;The heat exchanger is a water meter cooler; a variable frequency water pump is provided for extracting a ground water supply and cooling device;
    所述的“通过温度传感器与湿度传感器实现对外界温湿度的实时检测,并根据实时检测的温湿度调节换热器到适配的工作模式”,具体为:The "real-time detection of the external temperature and humidity by the temperature sensor and the humidity sensor, and the adjustment of the heat exchanger to the adapted working mode according to the temperature and humidity detected in real time", specifically:
    SA1:当检测到外界环境温度低于地下水温度时,启动变频水泵与水表冷器进行升温换热作业,以制备出符合系统要求的一次新风;SA1: When detecting that the ambient temperature is lower than the groundwater temperature, start the variable temperature water pump and the water cooler to perform the heat exchange and heat exchange operation to prepare a fresh air that meets the system requirements;
    SA2:当检测到外界环境温度高于地下水温度时,停止变频水泵与水表冷器的运行;SA2: When detecting that the ambient temperature is higher than the groundwater temperature, stop the operation of the variable frequency water pump and the water cooler;
    SA3:当检测到外界环境温度大于等于25℃且外界相对湿度超过百分之六十时,或当检测到外界环境温度大于等于28℃且外界相对湿度超过百分之六十五时,启动变频水泵与水表冷器进行除湿升温运行。SA3: When the ambient temperature is detected to be greater than or equal to 25 ° C and the relative humidity of the outside is more than 60%, or when the ambient temperature is greater than or equal to 28 ° C and the external relative humidity exceeds 65 percent, the inverter is activated. The pump and the water cooler are dehumidified and heated.
  3. 根据权利要求1所述的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:The adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to claim 1, wherein:
    所述烘干用热风制备单元包括有:由压缩机、冷凝器、蒸发器、气液分离器及相应的管路构成的热力循环系统;The drying hot air preparation unit comprises: a thermodynamic circulation system composed of a compressor, a condenser, an evaporator, a gas-liquid separator and a corresponding pipeline;
    在所述的余热风处理单元设有紊流热回收器及相应的管路;Providing a turbulent heat recovery device and a corresponding pipeline in the waste heat treatment unit;
    所述紊流热回收器设有新风进风口、回风进风口、第一处理风出风口及第二处理风出风口;The turbulent heat recovery device is provided with a fresh air inlet, a return air inlet, a first treatment air outlet and a second treatment air outlet;
    所述新风进风口管路连接至换热器的出风口;The fresh air inlet duct is connected to an air outlet of the heat exchanger;
    所述回风进风口连接经由余热风处理单元形成的热处理用进风所在管路;The return air inlet is connected to a pipeline of the heat inlet for heat treatment formed by the residual heat treatment unit;
    所述第一处理风出口输送的风通过排风管路排至大气;The wind conveyed by the first treatment air outlet is discharged to the atmosphere through the exhaust duct;
    所述第二处理风出风口输送的风作为制备热风用进风管路输送至烘干用热风制备单元相应进风口;The wind conveyed by the second treated air outlet is sent to the corresponding air inlet of the drying hot air preparation unit as an air inlet duct for preparing hot air;
    所述制备热风用进风作为冷凝器换热用风源,经冷凝器换热后形成烘干用风、管路输送进烘干塔;The hot air is used as a wind source for heat exchange of the condenser, and is heated by the condenser to form a drying wind and a pipeline to be sent to the drying tower;
    经由烘干塔烘干作业后产生的余热风经由管路、通过回风进风口输送进紊流热回收器;The waste heat generated after the drying operation of the drying tower is sent to the turbulent heat recovery device through the pipeline and through the return air inlet;
    通过工质由压缩机依次进入冷凝器、蒸发器、气液分离器再回到压缩机的热力循环构成用于提供烘干塔烘干用风的热力循环系统。The thermal cycle of the working medium from the compressor to the condenser, the evaporator, the gas-liquid separator and back to the compressor constitutes a thermodynamic circulation system for providing the drying tower drying wind.
  4. 根据权利要求1所述的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:The adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to claim 1, wherein:
    设置旋转除尘器,所述旋转除尘器用于将烘干塔排出的余热风除尘后,再作为热处理用进风的构成部分、管道输送至余热风处理单元。A rotary dust remover is provided for dedusting the waste heat exhausted from the drying tower, and then transporting it as a component of the heat inlet for the heat treatment to the waste heat treatment unit.
  5. 根据权利要求3所述的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:The adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to claim 3, wherein:
    在紊流热回收器的第一处理风出风口设置两路并联出风管路,一路出风管路用于排出风至大气中;在蒸发器的进风口设置两路并联进风管路,一路进风管路用于输送外界新风;另一路进风管路连接至设置于紊流热回收器的第一处理风出风口的另一路出风管路。Two parallel air outlet pipes are arranged in the first treatment air outlet of the turbulent heat recovery device, and one air outlet pipe is used for discharging wind to the atmosphere; two parallel air inlet pipes are arranged at the air inlet of the evaporator, One inlet air duct is used to transport fresh air from the outside; the other air inlet pipeline is connected to another air outlet duct provided in the first treatment air outlet of the turbulent heat recovery device.
  6. 根据权利要求3所述的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:The adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to claim 3, wherein:
    所述压缩机与冷凝器设于一个箱体内,所述制备热风的进风送至箱体内,经由与箱体内压缩机散热的空气混同后,再作为冷凝器换热用风源。The compressor and the condenser are disposed in a box body, and the inlet air for preparing the hot air is sent to the tank body, and is mixed with the air dissipated by the compressor in the box body, and then used as a wind source for heat exchange of the condenser.
  7. 根据权利要求2、3、4、5所述的一种自适应、自调节式热泵热风炉控制系统及其控制方法,其特征在于:An adaptive, self-regulating heat pump hot blast stove control system and control method thereof according to claims 2, 3, 4 and 5, characterized in that:
    在水表冷器侧设置第一温度传感器及湿度传感器,所述第一温度传感器用于检测外 界环境温度;所述湿度传感器用于检测外界环境湿度;a first temperature sensor and a humidity sensor are disposed on the water cooler side, wherein the first temperature sensor is configured to detect an ambient temperature; and the humidity sensor is configured to detect an ambient humidity;
    在烘干塔进风口设置第二温度传感器,所述第二温度传感器用于检测送入烘干塔风的温度;a second temperature sensor is disposed at the air inlet of the drying tower, and the second temperature sensor is configured to detect a temperature of the wind sent to the drying tower;
    在紊流热回收器的第一处理风出风口设置第三温度传感器,所述第三温度传感器用于检测第一处理风出风口的出风温度;a third temperature sensor is disposed at the first processing air outlet of the turbulent heat recovery device, and the third temperature sensor is configured to detect an outlet air temperature of the first processing air outlet;
    设置数据处理单元、用于处理各个温度传感器及湿度传感器检测的数据,并根据检测的数据与设定值的比较生成相应动作指令,Setting a data processing unit for processing data detected by each temperature sensor and the humidity sensor, and generating a corresponding action instruction according to the comparison between the detected data and the set value,
    在所述数据单元内设有第一温度比较模块、第二温度比较模块、第三温度比较模块及湿度比较模块,a first temperature comparison module, a second temperature comparison module, a third temperature comparison module, and a humidity comparison module are disposed in the data unit,
    在第一温度比较模块内录有第一温度设定值、第二温度设定值、第三温度设定值、第一湿度设定值及第二湿度设定值;Recording, in the first temperature comparison module, a first temperature setting value, a second temperature setting value, a third temperature setting value, a first humidity setting value, and a second humidity setting value;
    在第二温度比较模块内录有烘干塔进风湿球温度设定值;The set value of the drying tower inlet air ball temperature is recorded in the second temperature comparison module;
    在第三温度比较模块内录有温度下限设定值;Recording a lower temperature setting value in the third temperature comparison module;
    根据上述形成的具体控制步序如下:The specific control steps formed according to the above are as follows:
    S1:启动压缩机所在的热力循环系统及紊流热回收器,当运行至设定时长时,由数据处理单元接收相应的实时检测数据;S1: starting the thermal circulation system and the turbulent heat recovery device where the compressor is located, and when running to the set time length, the corresponding real-time detection data is received by the data processing unit;
    S2:将第一温度传感器检测的实时温度同时送至第一温度比较模块与第三温度比较模块;将湿度传感器检测的实时湿度送至湿度比较模块;S2: sending the real-time temperature detected by the first temperature sensor to the first temperature comparison module and the third temperature comparison module simultaneously; sending the real-time humidity detected by the humidity sensor to the humidity comparison module;
    将第二温度传感器检测的实时温度送至第二温度比较模块;Sending the real-time temperature detected by the second temperature sensor to the second temperature comparison module;
    将第三温度传感器检测的实时温度送至第三温度比较模块;Sending the real-time temperature detected by the third temperature sensor to the third temperature comparison module;
    S3:当送至第一温度比较模块的实时温度值大于第一温度设定值且送至湿度比较模块的实时湿度值大于第一湿度设定值时,启动变频水泵及水表冷器对新风进行除湿作业,并通过送至第二温度比较模块的实时温度值与烘干塔进风湿球温度设定值的实时比较计算出变频水泵的实时变频调节量;S3: when the real-time temperature value sent to the first temperature comparison module is greater than the first temperature setting value and the real-time humidity value sent to the humidity comparison module is greater than the first humidity setting value, the frequency conversion water pump and the water meter cooler are started to perform fresh air Dehumidification operation, and real-time frequency conversion adjustment of the variable frequency water pump is calculated by real-time comparison between the real-time temperature value sent to the second temperature comparison module and the set value of the inlet tower wet air ball temperature;
    S4:当送至第一温度比较模块的实时温度值大于第二温度设定值且送至湿度比较模块的实时湿度值大于第二湿度设定值时,启动变频水泵及水表冷器对新风进行除湿作业,并通过送至第二温度比较模块的实时温度值与烘干塔进风湿球温度设定值的实时比较计算出变频水泵的实时变频调节量;S4: when the real-time temperature value sent to the first temperature comparison module is greater than the second temperature setting value and the real-time humidity value sent to the humidity comparison module is greater than the second humidity setting value, the frequency conversion water pump and the water meter cooler are started to perform fresh air Dehumidification operation, and real-time frequency conversion adjustment of the variable frequency water pump is calculated by real-time comparison between the real-time temperature value sent to the second temperature comparison module and the set value of the inlet tower wet air ball temperature;
    S5:当送至第一温度比较模块的实时温度值小于第三温度设定值时,启动变频水泵及水表冷器进行换热作业;S5: when the real-time temperature value sent to the first temperature comparison module is less than the third temperature setting value, start the frequency conversion water pump and the water meter cooler to perform heat exchange operation;
    S6:当送至第三温度比较模块的经由第一温度传感器检测的实时检测值大于送至第 三温度比较模块的经由第三温度传感器检测的实时检测值时,开启紊流热回收器第一处理风出风口通向大气的管路进行排风作业,同时开启设于蒸发器的进风口的用于输送外界新风的管路进行新风输入。S6: Turn on the turbulent heat recovery device when the real-time detection value sent to the third temperature comparison module via the first temperature sensor is greater than the real-time detection value sent to the third temperature comparison module via the third temperature sensor. The air outlet to the atmosphere is processed to perform the air exhaust operation, and the pipeline for conveying the fresh air at the air inlet of the evaporator is opened to perform fresh air input.
PCT/CN2018/087795 2017-10-31 2018-05-22 Self-adaptive and self-regulating heat pump-based hot blast stove control system and control method thereof WO2019085443A1 (en)

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