A control system of a low-quality waste heat recovery power generation device
A waste heat recovery and power generation device technology, applied in general control system, control/regulation system, program control, etc., can solve problems such as ineffective control of steam drum water level, lack of mature control system, damage to device blades, etc., to improve economic efficiency and safety, shorten adjustment time, slow down the effect of corrosion
Active Publication Date: 2019-04-23
HEBEI UNIV OF TECH
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Problems solved by technology
In the existing patents for the control system of the low-temperature waste heat power generation device, the water level of the steam drum, deaerator and other devices cannot be effectively controlled, resulting in serious damage to the blades of the devices such as the Roots power machine, and the safety is relatively low
At present, the power of the low-quality waste heat recovery power generation device is 100kW, and the low-temperature waste heat recovery power generation device that can realize the pressure value of the low-temperature waste heat resource is lower than 0.8Mpa, the flow rate is lower than 2t / h, and the temperature is lower than 200°C. There is no mature and stable control system
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[0013] Specific examples of the present invention are given below. The specific embodiments are only used to further describe the present invention in detail, and do not limit the protection scope of the claims of the present application.
[0014] The present invention provides a control system (system for short, refer to figure 1 ), including single-chip microcomputer 1, power supply module 2, analog output module 3, electric valve 4, communication interface module 5, digital I / O module 6, display module 7 and intelligent instrument signal acquisition module 8; described communication interface module 5 includes RS485 communication interface module 51, RS232 communication interface module 52 and CAN bus interface module 53; Described digital I / O module 6 comprises switching value input interface circuit 61, encoder signal input interface circuit 62, relay output interface circuit 63 and indicator light Output interface circuit 64; the intelligent meter signal acquisition mod...
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The invention discloses a control system of a low quality waste heat recovery power generation device. The system is characterized in that the system comprises a single chip microcomputer, a power supply module, an analog quantity output module, an electric valve, a communication interface module, a digital I / O module, a display module, and an intelligent instrument signal acquisition module. The communication interface module comprises an RS485 communication interface module and an RS232 communication interface module. The single chip microcomputer is connected to the power supply module, the analog quantity output module and the digital I / O module. The intelligent instrument signal acquisition module is connected to the single chip microcomputer through the RS485 communication interface module. The display module is connected to the single chip microcomputer through the RS232 communication interface module. The input end of the analog quantity output module is connected to the single chip microcomputer, and the output end is connected to the electric valve. According to the control system, the three major problems of flue gas valve control, steam drum water level dynamic control and condenser and deaerator water level dynamic control can be overcome, the system is stable and reliable, and the control system has the advantages of miniaturization, low energy consumption, low cost, and good scalability.
Description
technical field [0001] The invention relates to the technical field of industrial control, in particular to a control system of a low-quality waste heat recovery power generation device. Background technique [0002] At present, industrial waste heat is a conventional recyclable energy with wide distribution and great application potential in industrial production. In industrial production, there are a large number of waste heat resources, including flue gas, steam and hot water, etc. These resources are widely distributed and generally exist in all walks of life. The generation of waste heat resources is due to the consumption of coal, oil and various combustible gas emissions in the process of industrial production, which belongs to secondary energy. With the development of the national economy and the increase in the consumption of coal, oil and other fuels, the discharge of industrial waste heat energy is bound to increase significantly. If the potential energy containe...
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IPC IPC(8): G05B19/042G01D21/02
CPCG01D21/02G05B19/042Y02P80/15
Inventor 肖艳军王新肖艳春张宗华
Owner HEBEI UNIV OF TECH