A heating furnace exhaust gas fan load balancing device and balancing method
An exhaust gas fan and load balancing technology, which is applied in the metallurgical field, can solve the problems of under-load state, unbalanced flue gas intake, which affects the service life of the exhaust gas fan, etc., so as to overcome the load difference, prolong the service life and reduce the investment cost. Effect
Active Publication Date: 2016-06-01
WISDRI ENG & RES INC LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
But at this time, even if the same speed setting value (from the output of the pressure controller) is given to the inverters of the two exhaust fans, due to the constraints of the layout of the process pipelines, the length of the branch pipes of the two exhaust fans and the resistance of the branch pipes ( For example, due to the difference in pipeline resistance caused by the number of turns of the branch pipeline and the different turning angles), the flue gas suction volume of the two exhaust gas fans, that is, the load will be unbalanced. In severe cases, one exhaust gas fan will be in an overloaded state, while the other The exhaust fan is under load, and the overload of the exhaust fan will seriously affect the service life of the exhaust fan
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
[0029] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0030] Such as figure 1 As shown in the figure, a heating furnace exhaust gas fan load balancing device includes an exhaust gas collection hood 1 connected through an exhaust gas pipeline, a heat exchanger 2, an inlet damper 31 for the exhaust gas fan on the transmission side, an exhaust fan 41 on the transmission side, and an inlet damper for the exhaust gas fan on the operating side 32. The exhaust gas fan 42 on the operation side and the chimney 5 also include the smoke hood pressure transmitter 6, the smoke hood thermometer 7, the exhaust fan inlet thermometer 81 on the transmission side, the exhaust fan inlet thermomet...
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 discloses a load balancing device and method for an exhaust gas fan of a heating furnace. The device mainly comprises an exhaust gas collection cover, a heat exchanger, a chimney, a heating furnace PLC (programmable logic controller), an exhaust gas collection cover pressure transmitter controlled via the heating furnace PLC, an exhaust gas collection cover thermometer, exhaust gas fan inlet dampers, an exhaust gas fan frequency converter, exhaust gas fans, exhaust gas fan inlet thermometers and the like. An exhaust gas fan load corrected value is automatically calculated according to exhaust gas fan inlet temperature detected values and running states of the exhaust gas fans, an output value of an exhaust gas collection cover pressure controller is corrected with the exhaust gas fan load corrected value, and rotation speeds of two exhaust gas fans are controlled, respectively. long-term load conditions of the exhaust gas fans are indirectly indicated through the exhaust gas fan inlet temperature detected values, load difference of the exhaust gas fans is overcome effectively, flue gas intakes of the exhaust gas fans are basically balanced, and the service lives of the exhaust gas fans are effectively prolonged.
Description
technical field [0001] The invention belongs to the technical field of metallurgy, in particular to a load balancing device and a balancing method for a heating furnace waste gas fan used in a steel rolling process in the metallurgical industry. Background technique [0002] In the steel rolling process in the metallurgical industry, the heat generated by the combustion of gas and combustion air in the burner is usually used to radiate the steel plate or coil in the heating furnace, and the waste gas generated by the mixed combustion of gas and combustion air is passed through a high-power frequency conversion The exhaust gas fan is extracted from the furnace and discharged to the outside of the factory building. The exhaust gas is extracted to balance the blowing of combustion air, so that the pressure in the furnace is basically kept stable. [0003] The existing exhaust gas fan system generally controls the speed of the frequency conversion exhaust fan indirectly through ...
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 Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00F27D19/00
CPCY02P10/25
Inventor 周登科
Owner WISDRI ENG & RES INC LTD