Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for controlling the internal pressure of a fireproof test furnace for components and coatings

A control method and internal pressure technology, applied to furnace control devices, furnaces, furnace components, etc., can solve problems such as slow response, large pressure fluctuations in the furnace, and inability to achieve accurate control, so as to achieve fast response and reduce furnace pressure. fluctuating effect

Active Publication Date: 2022-02-11
应急管理部四川消防研究所
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the response is slow, and the exhaust fan needs to be adjusted only when the pressure in the furnace changes. The pressure in the furnace fluctuates greatly, and accurate control cannot be achieved.

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for controlling the internal pressure of a fireproof test furnace for components and coatings
  • A method for controlling the internal pressure of a fireproof test furnace for components and coatings
  • A method for controlling the internal pressure of a fireproof test furnace for components and coatings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 As shown, the components provided in this embodiment and the pressure control device in the paint fire test furnace include a combustion-supporting fan 1, a combustion-supporting air inlet pipe 2, a combustion-supporting air pitot tube bidirectional probe 3, a combustion-supporting air pressure gauge 4, a combustion nozzle 5, and a furnace chamber 6 , furnace pressure probe 7, induced air duct 8, induced air duct temperature 9, induced air duct pressure gauge 10, induced air duct Pitot tube bidirectional probe 11, cold air regulating valve 12, cold air inlet pipe 13, exhaust fan 14, exhaust Smoke channel 15, PID controller, information receiving device and computer. The combustion-supporting air enters the combustion-supporting air inlet pipe 2 through the combustion-supporting fan 1, and the combustion-supporting air pitot tube bidirectional probe 3 and the combustion-supporting air pressure gauge 4 are installed on the combustion-supporting air inlet ...

Embodiment 2

[0027] The component and the control method of the pressure in the coating fireproof test furnace provided by the present embodiment include the following steps:

[0028] S1 collects information: when the test furnace is working, through the combustion air Pitot tube probe 3 installed on the combustion air inlet pipe 2, the combustion air pressure gauge 4, and the air induction pipe thermometer 9 installed on the air induction pipe 8, the air induction pipe The pressure gauge 10, the induced air pitot tube probe 11 and the furnace pressure probe 7 installed in the furnace 6 respectively collect the pressure information of the combustion air entering the pipeline 2, the pressure information in the furnace 6 and the temperature and pressure information of the induced air pipeline 8, And the collected information is transmitted to the computer through the information receiving device;

[0029] S2 Calculation of the standard volume flow rate of the combustion air: the computer cal...

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

No PUM Login to View More

Abstract

The invention discloses a method for controlling the internal pressure of a component and coating fireproof test furnace, comprising the following steps: S1 collects information, S2 calculates the flow rate of combustion-supporting air, S3 calculates the theoretical induced air flow rate, and S4 calculates the furnace pressure PID to generate the induced air control coefficient , S5 calculates the target induced air flow, S6 calculates the induced air flow PID to generate the smoke exhaust fan speed, S7 adjusts the smoke exhaust fan speed, and S8 real-time cycle control. The invention calculates the induced air flow required to maintain the furnace pressure through the combustion air flow, controls the exhaust fan frequency through the PID algorithm, and calculates and corrects the induced air flow through the furnace pressure feedback PID, so that the furnace pressure can be accurately controlled, and Reduce pressure fluctuations in the furnace. In addition, since the present invention achieves the purpose of controlling the pressure in the furnace by adjusting the flow rate of the induced air by changing the flow rate of the combustion air or the flow rate of the cold air, the response is fast and the furnace pressure can be quickly controlled.

Description

technical field [0001] The invention relates to a component and a method for controlling the internal pressure of a coating fireproof test furnace, belonging to the field of pressure control in a fireproof test furnace. Background technique [0002] According to the requirements of national standards for steel structure fire detection and steel structure fire protection coatings, the pressure in the furnace needs to be controlled during the test. At present, it is usually controlled by manually adjusting the smoke exhaust volume of the induced draft fan, but due to the large air volume, its ability to control the pressure in the furnace is weak. With the development of control and testing technology, there are clear requirements for the temperature rise curve of the test furnace, which requires the heating furnace to use different heating power at different stages, and the change of heating power is usually achieved by increasing or decreasing the combustion air flow and fue...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F27D19/00
CPCF27D19/00F27D2019/0009F27D2019/0028
Inventor 赵成刚汪爽孟志张林志伊海洋甘立平
Owner 应急管理部四川消防研究所