Evaporative cooler with explosion venting function
By installing multiple explosion relief valves on the evaporative cooler, the impact of shock waves generated by the explosion of the evaporative cooler during the steelmaking process on the electrostatic dust collector is solved, and the impact of explosion on the equipment is reduced or eliminated, and the production cost is reduced.
Patent Information
- Application Number
- CN202420574365.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-04-18
- Estimated Expiration
- 2034-03-25
AI Technical Summary
During the steelmaking process of converter, explosions are prone to occur in the evaporative cooler. The shock wave generated by the explosion will affect the electrostatic dust collector, causing the anode plate to deform and the cathode line to fall off. The electrostatic dust collector loses the dust removal effect, and requires overhaul and replace the electric field to increase production costs.
An evaporation cooler with explosion relief function is designed. By installing more than four explosion relief valves on the side wall of the evaporation cooler body, when the flue gas pressure is greater than 5kpa, the explosion relief valve lifts the lift cover plate and releases pressure to the outside. After the pressure relief is completed, the lift cover plate moves downward to seal the ventilation hole, thereby reducing or eliminating the impact of explosion on the equipment.
Through the action of the explosion relief valve, the evaporative cooler can relieve pressure in time, reduce or eliminate the impact of the shock wave generated by the explosion on the equipment, avoid damage to the electrostatic dust collector and production interruption, and reduce production costs.
Smart Images
Figure CN222770938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of converter steelmaking, in particular to an evaporative cooler with an explosion relief function. Background Art
[0002] like Figure 1 As shown, the evaporative cooler is a device for cooling and removing dust in the dry dust removal process of the converter smelting in a steel plant. It is installed at the end of the converter cooling flue 7 on the upper converter platform and at the front end of the electrostatic precipitator 1. Its function is to reduce the temperature of the flue gas generated during smelting in the converter 6 from about 650 degrees at the inlet to about 300 degrees. The high-temperature flue gas then enters the electrostatic precipitator 1 through the flue gas duct 2 to remove dust from the flue gas. Since the flue gas contains unburned oxygen and carbon monoxide, explosions are likely to occur in the evaporative cooler during production. The shock waves generated by the explosions will affect the electrostatic precipitator 1. Since the anode plates and cathode frames are distributed and installed inside the electrostatic precipitator 1, if explosion shocks occur frequently, it is easy to cause the anode plates to deform and the cathode wires to fall off. The electrostatic precipitator loses its dust removal effect and needs to be overhauled and the electric field replaced, which not only affects production but also increases production costs. Therefore, the industry urgently needs an evaporative cooler with an explosion relief function, which can release the shock wave generated by the explosion to the outside of the evaporative cooler when an explosion occurs, thereby reducing or eliminating the impact of the explosion on the electrostatic precipitator 1 and the evaporative cooler itself. Utility Model Content
[0003] The purpose of the utility model is to provide an evaporative cooler with an explosion relief function, which can release the shock wave generated by the explosion to the outside of the evaporative cooler, thereby reducing or eliminating the impact of the explosion on the electrostatic precipitator and the evaporative cooler itself.
[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0005] An evaporative cooler with an explosion relief function comprises an explosion relief valve, a chain plate ash conveyor, an evaporative cooler body, a cooling water nozzle, and a stop valve; the bottom end of the evaporative cooler body is provided with a chain plate ash conveyor, the outer shell of the evaporative cooler body is provided with an explosion relief valve, and the cooling water nozzle is arranged on the upper part of the evaporative cooler body; the upper end of the evaporative cooler body is connected to the converter cooling flue, and the side is connected to the flue gas pipe.
[0006] The above-mentioned evaporative cooler with explosion-relief function, the explosion-relief valve includes an upper fixed plate, a fixed pull rod, a spring, a telescopic sleeve, a telescopic rod, a lifting cover plate, a lower fixed plate, a connecting flange, and a valve body; the upper fixed plate is fixed to the lower fixed plate by a fixed pull rod and a fastener, the lower fixed plate is arranged at the upper end of the valve body, and the connecting flange is arranged at the lower end of the valve body; the top of the telescopic sleeve is welded to the upper fixed plate; the lower end of the telescopic rod is welded to the lifting cover plate, the telescopic rod is inserted into the telescopic sleeve, and a spring is provided in the inner cavity of the telescopic sleeve and the upper end of the telescopic rod; a vent is provided in the center of the valve body, and is sealed with a lifting cover plate.
[0007] In the above-mentioned evaporative cooler with explosion relief function, four or more explosion relief valves are arranged around the sides of the evaporative cooler body.
[0008] In the above-mentioned evaporative cooler with explosion-relief function, four or more telescopic rods are provided.
[0009] The utility model has the following advantages:
[0010] The utility model provides more than four explosion relief valves on the evaporative cooler body. When the smoke pressure inside the evaporative cooler body is greater than 5kPa, the smoke overcomes the spring pressure to lift the lifting cover plate and relieve the pressure to the outside. After the pressure relief is completed, the lifting cover plate moves downward under the action of the spring force to block the vent hole. Under the action of the explosion relief valve, the evaporative cooler will relieve pressure in time, reducing or eliminating the impact of the shock wave generated by the explosion on the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the utility model;
[0012] Figure 2 It is a schematic diagram of the three-dimensional structure of the explosion relief valve;
[0013] The numbers in the figure represent: 1. electrostatic precipitator, 2. flue gas duct, 3. explosion relief valve, 4. chain plate ash conveyor, 5. evaporative cooler body, 6. converter, 7. converter cooling flue, 8. cooling water nozzle, 9. stop valve, 3-1. upper fixed plate, 3-2. fixed pull rod, 3-3. spring, 3-4. telescopic sleeve, 3-5. telescopic rod, 3-6. lifting cover plate, 3-7. lower fixed plate, 3-8. connecting flange, 3-9. valve body. DETAILED DESCRIPTION
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0015] The utility model is an evaporative cooler with explosion relief function, see Figure 1, including an explosion relief valve 3, a chain plate ash conveyor 4, an evaporative cooler body 5, a cooling water nozzle 8, and a stop valve 9; the top of the evaporative cooler body 5 is connected to the converter cooling flue 7, and the high-temperature flue gas generated by the converter 6 is blown into the evaporative cooler body 5 through a blast device. A cooling water nozzle 8 is installed on the upper part of the evaporative cooler body 5, and cooling water spray is used to cool and reduce dust on the high-temperature flue gas; the chain plate ash conveyor 4 is installed at the lower end of the evaporative cooler body 5, and its function is to transport the dust back; the blast furnace flue gas that has been cooled and dust-reduced passes through the flue gas duct 2 and goes to the electrostatic precipitator 1 for further dust removal.
[0016] The utility model is an evaporative cooler with explosion relief function. On the side wall of the evaporative cooler body 5, more than four explosion relief valves 3 are installed. The explosion relief valve 3 includes an upper fixed plate 3-1, a fixed pull rod 3-2, a spring 3-3, a telescopic sleeve 3-4, a telescopic rod 3-5, a lifting cover plate 3-6, a lower fixed plate 3-7, a connecting flange 3-8, and a valve body 3-9; the top end of the telescopic sleeve 3-4 is welded to the upper fixed plate 3-1; the lower end of the telescopic rod 3-5 is welded to the lifting cover plate 3 -6 are welded together, the telescopic rod 3-5 is inserted into the telescopic sleeve 3-4, and a spring 3-3 is provided in the inner cavity of the telescopic sleeve 3-4 and at the upper end of the telescopic rod 3-5; threads are provided at the upper and lower ends of the fixed pull rod 3-2, and fasteners are used to fix the upper fixed plate 3-1 and the lower fixed plate 3-7 to the fixed pull rod 3-2. By adjusting the position of the fasteners, the tightness of the spring 3-3 can be adjusted; a vent is provided in the center of the valve body 3-9, and a lifting cover 3-6 is used to seal it.
[0017] The utility model provides an evaporative cooler with explosion relief function, in which more than four explosion relief valves 3 are provided on the evaporative cooler body 5. When the smoke pressure inside the evaporative cooler body is greater than 5kPa, the smoke overcomes the pressure of the spring 3-3 to lift the lifting cover 3-6 and relieve the pressure to the outside. After the pressure relief is completed, under the action of the spring force, the lifting cover 3-6 moves downward to block the vent hole.
Claims
1. An evaporative cooler with explosion relief function, characterized in that: The evaporative cooler comprises an explosion relief valve (3), a chain plate ash conveyor (4), an evaporative cooler body (5), a cooling water nozzle (8), and a stop valve (9); the bottom end of the evaporative cooler body (5) is provided with a chain plate ash conveyor (4), the outer shell of the evaporative cooler body (5) is provided with an explosion relief valve (3), and the cooling water nozzle (8) is arranged on the upper part of the evaporative cooler body (5); the upper end of the evaporative cooler body (5) is connected to the converter cooling flue (7), and the side is connected to the flue gas pipeline (2).
2. The evaporative cooler with explosion relief function according to claim 1, characterized in that: The explosion relief valve (3) comprises an upper fixing plate (3-1), a fixing rod (3-2), a spring (3-3), a telescopic sleeve (3-4), a telescopic rod (3-5), a lifting cover plate (3-6), a lower fixing plate (3-7), a connecting flange (3-8), and a valve body (3-9); the upper fixing plate (3-1) is fixed to the lower fixing plate (3-7) by means of the fixing rod (3-2) and a fastener; the lower fixing plate (3-7) is arranged at the upper end of the valve body (3-9), and the connecting flange (3-8) is arranged at the lower end of the valve body (3-9); the top end of the telescopic sleeve (3-4) is welded to the upper fixed plate (3-1); the lower end of the telescopic rod (3-5) is welded to the lifting cover plate (3-6), the telescopic rod (3-5) is inserted into the telescopic sleeve (3-4), and a spring (3-3) is arranged in the inner cavity of the telescopic sleeve (3-4) and at the upper end of the telescopic rod (3-5); a vent hole is arranged at the center of the valve body (3-9), and is blocked by the lifting cover plate (3-6).
3. The evaporative cooler with explosion relief function according to claim 1, characterized in that: More than four explosion relief valves (3) are arranged around the sides of the evaporative cooler body (5).
4. The evaporative cooler with explosion relief function according to claim 2, characterized in that: More than four telescopic rods (3-5) are provided.