CN210796510U

CN210796510U - Hot blank cap for steel slag hot blank belt safety unloading and explosion automatic connecting device

Info

Publication number: CN210796510U
Application number: CN201921463262.6U
Authority: CN
Inventors: 黄云; 侯成; 王绍峰
Original assignee: Beijing Shougang International Engineering Technology Co Ltd
Current assignee: Beijing Shougang International Engineering Technology Co Ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-06-19
Anticipated expiration: 2029-09-04

Abstract

A hot stuffy cover for a steel slag hot stuffy belt safe explosion-discharging automatic connecting device belongs to the technical field of steel-making hot stuffy slag treatment. Comprises a hot cover body (1), an explosion-proof valve (2), a nozzle (3), a connecting pipeline (4), a fixed hook (5), a connecting chain ring (6), a connecting support (7) and a connecting shaft (8). The device can be applied to all hot blank covers, and the explosion relief pressure is determined according to the size of the slag stewing pool, so that the reserved stroke and the stressed sectional area of the hook and the connecting ring are determined. The hot-water-resistant cover has the advantages of ingenious design, simple component manufacturing, high safety, simplicity and convenience in detaching and hanging the hot-water-resistant cover and wide applicability.

Description

Hot blank cap for steel slag hot blank belt safety unloading and explosion automatic connecting device

Technical Field

The utility model belongs to the technical field of the hot vexed sediment of steelmaking is handled, concretely relates to a hot stifled lid that is used for the hot vexed area of steel slag to unload safely and explode automatic connecting device.

Background

With the rapid development of the steel industry, the amount of the steel slag is increased in proportion, and the treatment and the recycling of the steel slag become one of important ways for realizing the sustainable development of the steel industry. At present, the steel slag hot-disintegration treatment process is most representative, the process gives consideration to the requirements of stability and environmental protection of the steel slag performance, and the process is more suitable for comprehensive treatment and recycling of the steel slag. Therefore, the application of hot-disintegration treatment technology in domestic iron and steel enterprises is more and more common. However, the smooth production of steel slag processing workshops of various steel enterprises is seriously influenced by explosion of a hot stuffy device (a hot stuffy tank), and the explosion of a hot stuffy pit cover is a great safety threat to equipment and personnel and sometimes even threatens the life safety of workers. Although various measures for preventing the hot stuffy device from exploding are explored and researched on the hot stuffy treatment operation of the steel slag, and facilities such as an explosion-proof valve and the like are added on the hot stuffy cover, the situation that the hot stuffy cover explodes to hurt equipment and personnel during the explosion cannot be completely avoided.

And pouring the high-temperature converter steel slag into a hot stuffy tank, covering a hot stuffy cover when the slag loading amount reaches 80%, adding water into a water seal tank for sealing, and spraying water to generate a large amount of water vapor for hot stuffy operation. Not only a large amount of water vapor with higher temperature is generated in the initial stage of hot disintegration, but also the water vapor has higher density, most of the water vapor is discharged from the exhaust valve on the tank cover and the exhaust holes on the tank wall, and the converter steel slag contains a certain amount of carbon elements and reacts with the water vapor (C + H)₂High temperature of O → CO + H₂) And combustible gas (CO density 1.25g/L and H) is generated in the pool₂0.0899g/L) is less than the density of the water vapor during this period. That is, the combustible gas is above the water vapor. Therefore, the combustible gas generated in the pool in the initial stage of hot sealing can be discharged in time, and explosion is not generated generally. Along with the lapse of the hot stuffy time, the temperature in the pond reduces gradually, the vapor temperature also follows to reduce, the steam volume also reduces gradually, the density of the combustible gas CO who produces in this moment pond is just greater than the density of this period of time vapor, then the hot stuffy pond is the vapor in the top in the pond, below be combustible gas, that is to say, the first exhaust from the discharge hole on the pond wall and the discharge valve on the pond lid is vapor, CO that produces at this stage if can not in time when discharging, will gather in a certain space in the pond, along with the lapse of hot stuffy time again, the combustible gas's of production volume increases gradually, finally reach combustible gas's explosion limit scope. Simultaneously, along with the reduction of the temperature in the tank and the reduction of the pressure in the tank in the later period of hot stuffinessThe oxygen concentration (oxygen density 1.429 g/L) in the pool will be increased, and if a small amount of high-temperature red slag exists in the pool or the adjacent pool of the hot stuffy pool splashes slag when the red slag is tipped over, the temperature condition meets the CO explosion condition, so that the hot stuffy pool cover is detonated at a certain moment, and great harm is caused to the whole safety production.

Disclosure of Invention

The utility model aims at providing a stifled lid that explodes is unloaded to a vexed area safety that is used for the slag heat, on stifled basis that increases designs such as explosion-proof valve of covering, innovative design is unloaded and is exploded safe connecting device, guarantees when exploding, and the device can play two-stage safety precaution measures. The hot cover safety connecting device plays an automatic protection role so as not to cause safety accidents due to the fact that the hot cover safety connecting device is blown away. Convenient use, simple structure and strong safety.

The utility model discloses a hot stuffy lid 1, explosion-proof valve 2, nozzle 3 and connecting line 4, fixed couple 5, connecting link 6, connection support 7, connecting axle 8. The hot blank cap body 1 is of a steel plate welding structure and is connected with 4 anti-explosion valves 2 through flanges. 4 rows of nozzles are arranged in the hot stuffy cover body 1 and are connected with a water pipe through a connecting pipeline 4, and the connecting pipeline 4 is connected with a pipeline bracket welded on the inner wall of the hot stuffy cover body 1. The four sides of the hot stifled cover body 1 are respectively provided with 2 connecting supports 7, and the supports 7 are welded with the hot stifled cover body 1. The connecting link 6 is connected with the connecting support 7 through a connecting shaft 8. When the hot blank cap 1 works, the connecting chain ring 6 is sleeved in the fixed hook 5. And calculating the ascending strokes of the fixed hooks 5 and the connecting chain rings 6 and the sectional areas of the connecting chain rings 6 according to the designed explosion-relief pressure.

The utility model discloses utilize the reservation stroke between go-between and the couple when detonating, allow hot stifle to have certain aperture under pressure state, before the aperture reaches the stroke limit, open (contain to unload and explode the valve) area and be enough to unload the part with the pressure that receives this moment, the reliable couple of remaining part is overcome with the atress of go-between, guarantees that stifle is finally unlikely to break away from hot stifle pond and explodes and fly, protects peripheral equipment and personnel's safety.

The utility model discloses a two-stage blast proof measure, when taking place detonating, explosion-proof valve 2 is opened automatically to the one-level blast proof measure, carries out the pressure release. The function of fixing the hot blank cap is achieved by utilizing the stress between the fixed hook 5 and the fixed support 9. Once the explosion force exceeds the stress of the fixed hook to cause the hook to fail, the secondary explosion-proof measure is automatically started,

the utility model discloses compare with traditional hot stifle, this device utilizes the reservation stroke between go-between and the couple when detonating, allows hot stifle to have certain aperture under pressure state, before the aperture reaches the stroke limit, opens (including unloading and explode the valve) the area and is enough to unload the part with the pressure that receives this moment, and the remaining part is reliably got in touch and is overcome with the atress of go-between, guarantees that stifle is finally unlikely to break away from hot stifle pond and explodes and fly, protects peripheral equipment and personnel's safety.

The utility model has the advantages of, the design is exquisite, subassembly simple manufacture, security are strong, take off hang hot stifle simple and convenient, extensive applicability is general.

Drawings

Fig. 1 is a schematic view of a thermal blank cap with a safety explosion-relief automatic connection device.

Fig. 2 is a schematic diagram (part I is enlarged) of the safe explosive-discharging automatic connecting device.

Fig. 3 is a schematic view (part II is enlarged) of the safe explosion-relief automatic connecting device.

In the figure: the hot stuffy cover comprises a hot stuffy cover body 1, an explosion-proof valve 2, a nozzle 3, a connecting pipeline 4, a fixed hook 5, a connecting link 6, a connecting support 7, a connecting shaft 8, a fixed support 9, a sealed water tank 10 and an embedded steel plate 11.

Detailed Description

The utility model is further explained with the attached drawings and the implementation method of the hot blank cap with the safe explosion-discharging automatic connecting device with the length of 6500mm and the width of 5950 mm.

As shown in fig. 1, the utility model comprises a hot cover body 1, an explosion-proof valve 2, a nozzle 3, a connecting pipeline 4, a fixed hook 5, a connecting link 6, a connecting support 7 and a connecting shaft 8. The hot blank cap body 1 is of a steel plate welding structure and is connected with 4 anti-explosion valves 2 through flanges. 4 rows of nozzles are arranged in the hot stuffy cover body 1 and are connected with a water pipe through a connecting pipeline 4, and the connecting pipeline 4 is connected with a pipeline bracket welded on the inner wall of the hot stuffy cover body 1. The four sides of the hot stifled cover body 1 are respectively provided with 2 connecting supports 7, and the supports 7 are welded with the hot stifled cover body 1. The connecting link 6 is connected with the connecting support 7 through a connecting shaft 8. When the hot blank cap 1 works, the connecting chain ring 6 is sleeved in the fixed hook 5.

4 fixed supports 9 are welded on each side of the outer walls of two sides of a sealed water tank 10 corresponding to the hot blank cap body 1. One end of each side 2 connecting chain rings 6 is connected with two fixed supports 9 at the outer side through a chain. The fixed support 9 is welded on the outer wall of the sealed water tank 10, and the sealed water tank 10 is welded with the hot stuffy pit along the embedded steel plate 11. During hot stuffy work, the fixed hook 5 connected with the connecting supports 7 in the middle of each side is put down to hook the fixed support 9, the connecting link 6 hooks the connecting shafts 8 on the 2 outer sides of the hot stuffy cover body 1, and the sectional area of the hook 5 and the chain length and the sectional area of the chain of the connecting link 6 are calculated according to the designed explosion-relief pressure.

When the explosion happens, the first-level explosion-proof measure is to automatically open the explosion-proof valve 2 to release the pressure. The function of fixing the hot blank cap is achieved by utilizing the stress between the fixed hook 5 and the fixed support 9. Once the explosive force exceeds the fixed hook stress, the hook is disabled, and a secondary explosion-proof measure is automatically started: the reserved length of 350-400mm of the connecting chain ring 6 is utilized to allow the thermal blank cap to have a certain opening degree in a pressure state, the opening (including the explosion valve) area is enough to remove most of the pressure borne by the thermal blank cap at the moment before the opening degree reaches the stroke limit, and the rest part is overcome by the stress of the connecting chain ring 6 and the connecting support 7, so that the blank cap is prevented from being separated from the thermal blank station and being blown away finally, and the safety of peripheral equipment and personnel is protected.

Claims

1. A hot cover for a steel slag hot cover safety explosion-relief automatic connecting device is characterized by comprising a hot cover body (1), an explosion-proof valve (2), a nozzle (3), a connecting pipeline (4), a fixed hook (5), a connecting chain ring (6), a connecting support (7) and a connecting shaft (8); the hot stuffy cover body (1) is of a steel plate welding structure and is connected with 4 explosion-proof valves (2) through flanges, 4 rows of nozzles (3) are arranged in the hot stuffy cover body (1) and are connected with a water pipe through connecting pipelines (4), and the connecting pipelines (4) are connected through pipeline brackets welded on the inner wall of the hot stuffy cover body (1); the four sides of the hot closed cover body (1) are respectively provided with 2 connecting supports (7), and the connecting supports (7) are welded with the hot closed cover body (1); the connecting chain ring (6) is connected with the connecting support (7) through a connecting shaft (8); when the hot stuffy cover body (1) works, the connecting chain ring (6) is sleeved in the fixed hook (5).