Tempering-preventing and air-leakage-preventing drainage device for stainless steel continuous casting bale

Abstract

The utility model relates to the technical field of stainless steel continuous casting, in particular to an anti-backfire and anti-leakage drainage device for a stainless steel continuous casting bale. An oxygen port is connected with a high-pressure hose, the other end of the high-pressure hose is connected with a gas check valve, and the other end of the gas check valve is connected to a gun barrel of a drainage gun; a locking sleeve internally provided with a sealing ring and tight threads is screwed into the end of the gun barrel, a drainage oxygen tube is inserted into the locking sleeve from an opening of the locking sleeve and connected with the gun barrel through the sealing ring and the tight threads of the locking sleeve, and the drainage oxygen tube is fixed by rotating a tightening switch. And the safety separation blade is sleeved on the gun barrel at a position 100-200mm behind the locking sleeve at one end close to the gas check valve. In the drainage operation process of the stainless steel continuous casting ladle, the device has the functions of backfire prevention and air leakage prevention, the safety of drainage operation is greatly improved, drainage personnel are protected, in addition, the requirement for the length of a drainage oxygen pipe connected with the device is reduced, and the cost is reduced by about 30% by reducing the length of the oxygen pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel continuous casting, in particular to a backfire and gas leakage prevention drainage device for a stainless steel continuous casting ladle. Background Art

[0002] Continuous casting is an important part of the steel production process, so it is extremely important to ensure the smooth and stable operation of continuous casting. The ladle is hoisted from the smelting area to the ladle turntable of the continuous casting. The qualified molten steel flows into the crystallizer through the tundish and solidifies into a cast billet. Due to factors such as molten steel temperature, inclusions, molten steel retention time, and drainage sand quality, the ladle may have poor steel flow and interruption on the turntable. Drainage is to burn the agglomerates by spraying oxygen into the ladle outlet through a steel pipe to achieve the purpose of diverting the steel flow. The drainage device currently used in stainless steel continuous casting machines includes an oxygen hose and a drainage oxygen pipe. The method of using the device is: bend the drainage oxygen pipe in a specific area to facilitate delivery to the ladle outlet, then insert one end of the oxygen hose into the ladle outlet and spray oxygen at the other end.

[0003] For example, a factory uses drainage devices such as oxygen belts, 3m long drainage oxygen tubes, and rare earth wires. The cut end of the oxygen tube is bent into 90 degrees at 950mm, and the folded rare earth wire is inserted. The oxygen tube with the inserted rare earth wire is connected to the oxygen belt, and the insertion depth is >100mm. The operation requires the cooperation of two personnel, drainage and oxygen release. The drainage personnel is responsible for controlling the drainage oxygen tube, and the oxygen release personnel is responsible for controlling the oxygen valve according to the needs of the drainage personnel. In this method, the drainage oxygen tube and the oxygen belt are only connected by insertion, which poses the risk of oxygen tempering, flash explosion, and gas leakage. It is very easy to cause burns to personnel, and there is a risk of loosening and detachment of the insertion connection.

[0004] The anti-flashback and anti-leakage drainage device for stainless steel continuous casting ladle adopts a simple and reliable mechanical structure, which makes it have the functions of anti-flashback and anti-leakage. In addition, the device reduces the length of the oxygen pipe connected to it, achieving the cost reduction goal of reducing the use of oxygen pipe by 30%. According to the feedback from the site, the new drainage device does have the functions of anti-flashback and anti-leakage, and is safe and convenient to use. Utility Model Content

[0005] The utility model aims to solve the above problems and provides a drainage device for preventing backfire and gas leakage of a stainless steel continuous casting ladle.

[0006] The purpose of the utility model is achieved as follows: a stainless steel continuous casting large bag anti-backfire and anti-leakage drainage device, including a locking sleeve, a rotary tightening switch, a sealing ring, a tight thread, a drainage gun, a gas check valve, a drainage oxygen tube, a high-pressure hose, a safety baffle, the oxygen port is connected with a high-pressure hose, the other end of the high-pressure hose is connected to the gas check valve, the other end of the gas check valve is connected to the barrel of the drainage gun, the end of the barrel is screwed into the locking sleeve with a sealing ring and a tight thread inside, the drainage oxygen tube is inserted into the locking sleeve from the opening of the locking sleeve, and is connected to the barrel through the sealing ring and the tight thread of the locking sleeve, the drainage oxygen tube is fixed by rotating the tightening switch, and the safety baffle is set on the barrel 100-200mm behind the locking sleeve near one end of the gas check valve.

[0007] The rotary tightening switch is a bolt or screw.

[0008] The beneficial effects of the utility model are as follows: during the drainage operation of the stainless steel continuous casting ladle, the device has the functions of preventing backfire and gas leakage, which greatly improves the safety of the drainage operation, thereby protecting the drainage personnel. In addition, since the length of the drainage oxygen pipe connected thereto is reduced, the cost is reduced by about 30% by reducing the length of the oxygen pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings.

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Among them: 1. Locking sleeve, 2. Rotating and tightening switch, 3. Sealing ring and tight thread, 4. Drainage gun, 5. Gas check valve, 6. High-pressure hose, 7. Safety baffle, 8. Drainage oxygen tube. DETAILED DESCRIPTION

[0012] The technical solution of the utility model is: 1. Use a high-pressure hose 6, one end of which is connected to the oxygen port, and the other end is equipped with a gas check valve 5. The high-pressure hose 6 is connected to the oxygen port to prevent flash explosion, and is connected to the drainage gun 4 through the gas check valve 5, which can effectively prevent the problem of flashback when the oxygen pressure is insufficient. The drainage gun 4 is welded with the locking sleeve.

[0013] 2. The drainage gun and the drainage oxygen tube are connected by a sealing ring and a tight thread 3, which can effectively prevent leakage. The installation of a circular safety baffle 7 can effectively protect the operator's hands in the event of an accidental leakage. 3. The locking sleeve is used to connect and fix the drainage oxygen tube and the drainage gun. The drainage oxygen tube is inserted through the locking sleeve 1 and fixed by rotating the tightening switch 2.

[0014] The oxygen port is connected to the high-pressure hose 6 and then connected to the drainage gun through the gas check valve 5, so that it has the function of anti-backfire, which greatly improves the safety of drainage operation. The drainage gun is connected to the locking switch 2 by the sealing ring and the tight thread 3, so that it has the function of anti-leakage. The installation of the baffle 7 can protect the drainage personnel even if there is an accidental leak. In addition, the drainage gun is used for fixed use, and the drainage oxygen tube is used for consumption, which reduces the length of the original drainage oxygen tube by about 30%, reducing the cost of use.

[0015] A factory uses this stainless steel continuous casting ladle anti-flashback and anti-leakage drainage device. Before use, check that the high-pressure hose is intact, the drainage gun and the oxygen pipe joint are in close contact and locked, and there is no oxygen leakage. Check that the oxygen check valve joint is tight and not loose, and the clamping screw rotates normally. Bend the oxygen pipe cut end at 950mm to 90°, insert the folded rare earth wire, connect the drainage oxygen pipe 8 with the inserted rare earth wire to this device through the locking opening 1, and then fix it by the locking switch 2. The drainage personnel hold the drainage gun 4, one hand behind the safety baffle and the other hand in front of the oxygen check valve. Cooperate with the oxygen release personnel to complete the drainage. According to the feedback from on-site use, compared with the previous simple insertion connection, the new drainage device has a good locking effect and does not have the problem of disengagement during use. It is more tight and labor-saving. In addition, the new drainage device also adds anti-flashback and anti-leakage functions, which is safer to use and more assured during the operation process.

[0016] The utility model is a drainage device for preventing backfire and gas leakage of stainless steel continuous casting ladle. A high-pressure hose is used, one end of which is connected to the oxygen port, and the other end is installed with a gas check valve, and then connected to the drainage gun. The high-pressure hose 6 is connected to the oxygen port to prevent flash explosion, and the problem of backfire when the oxygen pressure is insufficient can be effectively prevented by continuous casting with the drainage gun through the gas check valve 5. The drainage gun and the locking sleeve are connected by a sealing ring and a tight thread 3, which can effectively prevent gas leakage. The installation of a circular safety baffle 7 can effectively protect the operator's hands in the event of an accidental gas leak. The locking sleeve is for connecting and fixing the drainage oxygen tube and the drainage gun. The drainage oxygen tube is inserted through the muzzle 1 and fixed by rotating and tightening the switch 2. In addition, since the demand for the length of the drainage oxygen tube connected thereto is reduced, the cost can be reduced by reducing the length of the oxygen tube.

[0017] The above description is only a specific embodiment of the present invention, but the structural features of the protection scope of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the patent scope of the present invention.

Claims

1. A stainless steel continuous casting ladle anti-backfire and anti-leakage drainage device, characterized in that: It includes a locking sleeve, a rotary tightening switch, a sealing ring, a tight thread, a drainage gun, a gas check valve, a drainage oxygen tube, a high-pressure hose, and a safety baffle. The oxygen port is connected to the high-pressure hose, the other end of the high-pressure hose is connected to the gas check valve, the other end of the gas check valve is connected to the barrel of the drainage gun, the end of the barrel is screwed into the locking sleeve with a sealing ring and a tight thread inside, the drainage oxygen tube is inserted into the locking sleeve from the opening of the locking sleeve, and is connected to the barrel through the sealing ring and the tight thread of the locking sleeve, the drainage oxygen tube is fixed by rotating the tightening switch, and the safety baffle is set on the barrel 100-200mm behind the locking sleeve near one end of the gas check valve.

2. The anti-backfire and anti-leakage drainage device for stainless steel continuous casting ladle according to claim 1, characterized in that: The rotary tightening switch is a bolt or screw.

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