PID control module and printing waste gas emission control system
A control module and waste gas emission technology, applied in the direction of electric controllers, controllers with specific characteristics, etc., can solve the problems of poor automatic control of printing waste gas emissions, affecting the treatment effect of waste gas treatment devices, and non-conforming waste gas emissions. Achieve the effect of reducing shock phenomenon, preventing over-adjustment, and controlling stability
Pending Publication Date: 2021-01-22
FUJIAN XINYE INVESTMENT & MANAGEMENT GRP CO LTD
View PDF10 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the existing PID control modules basically adopt a single-stage control method, which is not effective for automatic control of printing exhaust emissions, and is prone to high-amplitude and high-frequency oscillations, which affects the treatment effect of subsequent exhaust gas treatment devices, resulting in poor exhaust emissions. Meet relevant standards
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.
[0018] Such as figure 1 As shown, a printing exhaust emission control system may include a touch screen, an air volume sensor, a regulating valve and a PLC controller electrically connected thereto. Corresponding air volume sensors and regulating valves are installed on each exhaust pipe. The corresponding PID control module is built in the PLC controller, and the air volume sensor, the regulating valve and the PID control module form a PID control loop to automatically control the discharge of printing waste gas. That is, the air volume sensor is used to provide a detection signal to the PID control module, and the output of the PID control module controls the opening of the regulating valve, thereby realizing the automatic control of printing waste gas discharge.
[0019] Such as figure 2 with 3 As shown, the PID control module includes a two-...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a PID control module and a printing waste gas emission control system. The PID control module comprises a first-stage PID control gate, a second-stage PID control gate and a third-stage PID control gate which are bidirectionally controlled, when an absolute difference value of PV and SP is in a first preset range, the first-stage PID control gate is adopted for regulationand control; when the absolute difference value between the PV and the SP is within a second preset range, the second-stage PID control gate is adopted for adjustment and control; and when the absolute difference value between the PV and the SP is within a third preset range, the three-stage PID control gate is adopted for adjustment and control. Fine adjustment of detection signal deviation is guaranteed, excessive adjustment can be prevented, the oscillation phenomenon of a control system is reduced, the PID control module has the beneficial effects of being high in response speed, stable incontrol and high in precision, and guarantees that printing waste gas emission meets the standard.
Description
technical field [0001] The invention relates to the field of automatic control, in particular to a PID control module and a printing waste gas emission control system. Background technique [0002] Printing waste gas contains a large amount of toxic and harmful substances, which need to be collected in a waste gas treatment device for treatment before being discharged into the air. The printing exhaust emission control system is mainly composed of pressure sensors, PLC controllers, touch screens, frequency converters, relays, electric air valves (regulating valves) and blowers. PID control modules are usually used to automatically control the exhaust emissions of each printing unit. However, the existing PID control modules basically adopt a single-stage control method, which is not effective for automatic control of printing exhaust emissions, and is prone to high-amplitude and high-frequency oscillations, which affects the treatment effect of subsequent exhaust gas treatm...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 戈华丰赖烜衍
Owner FUJIAN XINYE INVESTMENT & MANAGEMENT GRP CO LTD