Energy-saving connecting structure of steel rolling heating furnace
By setting up a connecting pipe and a pneumatic control valve in the steel rolling furnace, air sharing and independent heating control between the high-line and bar heating furnaces is achieved, the energy consumption problem during rolling is solved, and significant electricity saving and product savings are achieved. Quality improvement.
Patent Information
- Application Number
- CN202420830426.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-22
AI Technical Summary
The steel rolling heating furnace needs to maintain a heat insulation state during the rolling period, which causes the blower and the air induced fan to operate for a long time, which increases energy consumption and affects energy conservation and consumption reduction.
By setting up a communication pipe and a pneumatic control valve between the high-line and the bar heating furnace, the air is shared and independent heating control is achieved, the blower and the air induced fan are disabled, and the rod heating furnace is used to provide the air required for combustion and pump it away with the exhaust gas. Exhaust gas, achieving energy saving and consumption reduction in high-line heating furnaces.
When rolling and insulating, the electricity is saved by 6,000 kwh, the monthly electricity cost is saved by 30,000 yuan, and the annual electricity cost is saved by 820,000 yuan. At the same time, the uniformity of the billet temperature is improved and the product quality is ensured.
Smart Images
Figure CN222187828U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an energy-saving connection structure of a steel rolling heating furnace. Background Art
[0002] The annual design capacity of the high-speed wire heating furnace in the steel rolling mill is 600,000 tons. Due to factors related to steel market demand, the annual output and production time are sometimes not fixed. When the market needs it, it is often put into production immediately. During the rolling period, the heating furnace is kept in a heat preservation state, and the blower and induced draft fan are put into normal operation, which increases energy consumption. Summary of the invention
[0003] The utility model aims to provide an energy-saving connection structure of a steel rolling heating furnace, which can improve the working condition of the steel rolling heating furnace, not only does not affect production, but also can well save energy and reduce consumption.
[0004] The technical solution adopted by the utility model is an energy-saving connection structure of a steel rolling heating furnace, including a high-speed wire heating furnace blower and a rod heating furnace blower, one end of the air outlet pipe of the high-speed wire heating furnace blower is connected to the high-speed wire side drying furnace air duct, one end of the air outlet pipe of the rod heating furnace blower is connected to the rod side drying furnace air duct, a connecting pipe is arranged between the two air outlet pipes, a main pneumatic control valve is respectively arranged on the two air outlet pipes, and an auxiliary pneumatic control valve is installed on the connecting pipe close to the high-speed wire heating furnace blower.
[0005] The utility model disables the blower and the induced draft fan of the heating furnace during the waiting and insulation period of the rolling furnace, realizes the shared air of the drying furnace duct between the bar heating furnace and the high-speed wire heating furnace, uses the drying furnace burner for insulation during insulation, the air required for gas combustion is provided by the blower of the bar heating furnace, and the exhaust gas generated by the combustion is extracted by the suction force generated by the auxiliary flue, thereby realizing the deactivation of the blower and the induced draft fan of the high-speed wire heating furnace, saving electricity consumption, and having a positive significance for energy saving and consumption reduction.
[0006] The utility model connects the air ducts of the high-bar wire furnace in series and sets pneumatic control valves on both sides to realize the sharing of air between the high-bar wire and the rod wire furnaces, and realizes free switching and closing during production and insulation waiting for rolling. The furnace burner is put into use for insulation during insulation waiting for rolling, and the heat storage burner is put into use during normal production. When the high-bar wire is in normal production, the high-bar wire heating furnace blower provides the high-bar wire furnace air duct with the amount of air required for gas combustion through the high-bar wire pneumatic control valve. At this time, the newly added auxiliary pneumatic control valve is in a closed state, realizing independent heating control of the high-bar wire heating furnace. When the high-bar wire is waiting for rolling, the high-bar wire heating furnace blower is stopped and the main pneumatic control valve on the high-bar wire side is closed. At this time, the newly added auxiliary pneumatic control valve is opened, and the air of the rod heating furnace blower is sent into the high-bar wire side furnace air duct through the connecting pipe to ensure the amount of air required for insulation and combustion of the high-bar wire heating furnace. The high-bar wire heating furnace blower is stopped to achieve the purpose of energy saving and consumption reduction.
[0007] The utility model has a 250kwh blower that is stopped during rolling and heat preservation, which can save 6000kwh of electricity per day and 30,000 yuan of electricity cost per month. The induced draft fan that is stopped during rolling and heat preservation can save 10320kwh of electricity per day and 52,000 yuan of electricity cost per month, with an estimated annual electricity cost saving of 820,000 yuan. Combined with the use of a drying furnace burner during on-site production, the temperature uniformity of the heated steel billet is improved, which is the first barrier to product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the connection structure of the utility model. Implementation
[0009] An energy-saving connection structure for a steel rolling heating furnace, such as Figure 1 As shown, it includes a high-speed wire heating furnace blower 1 and a rod heating furnace blower 7. One end of the air outlet pipe of the high-speed wire heating furnace blower 1 is connected to the high-speed wire side furnace air duct 8, and one end of the air outlet pipe 6 of the rod heating furnace blower 7 is connected to the rod side furnace air duct 9. A connecting pipe 3 is arranged between the two air outlet pipes. A main pneumatic control valve 4, 5 are respectively arranged on the two air outlet pipes. An auxiliary pneumatic control valve 2 is installed on the connecting pipe 3 close to the high-speed wire heating furnace blower.
[0010] When the high-speed wire is in normal production, the high-speed wire heating furnace blower 1 provides the high-speed wire drying furnace air duct 8 with the amount of air required for gas combustion through the main pneumatic control valve 4. At this time, the newly added auxiliary pneumatic control valve 2 is in a closed state, realizing independent heating control of the high-speed bar wire heating furnace. When the high-speed wire is waiting to be rolled, the high-speed wire heating furnace blower 1 is stopped, and the main pneumatic control valve 4 on the high-speed wire side is closed. At this time, the newly added auxiliary pneumatic control valve 2 is opened, and the air of the bar heating furnace blower 7 is sent into the high-speed wire side drying furnace air duct 8 through the connecting pipe 3 to ensure the amount of air required for the high-speed wire heating furnace to keep warm and burn. The high-speed wire heating furnace blower 1 is stopped to achieve the purpose of energy saving and consumption reduction.
Claims
1. An energy-saving connection structure for a steel rolling heating furnace, comprising a high-speed wire heating furnace blower and a bar heating furnace blower, wherein one end of the air outlet pipe of the high-speed wire heating furnace blower is connected to the high-speed wire side drying furnace air duct, and one end of the air outlet pipe of the bar heating furnace blower is connected to the bar side drying furnace air duct, wherein: A connecting pipe is arranged between the two air outlet pipes, a main pneumatic control valve is arranged on each of the two air outlet pipes, and an auxiliary pneumatic control valve is installed on the connecting pipe close to the high-speed heating furnace blower.