CN201535634U - Fining furnace bleed-out alarm device - Google Patents

Abstract

The utility model relates to a fining furnace bleed-out alarm device, in order to prevent bleed-out, an anti-leakage disc is mounted at the bottom of a tank in an existing fining furnace, the height of the anti-leakage disc is increased as the difference of tons of molten steel, the height of a vacuum tank is also increased, and the weight and the cost of the device are increased. The fining furnace bleed-out alarm device comprises a vacuum tank body, wherein the bottom of the vacuum tank body is provided with a bleed-out channel, a bleed-out alarm device is arranged on the bleed-out channel, and the bleed-out alarm device comprises a middle pipeline, a transition flange, an armoring electric thermocouple and an aluminum closing plate, wherein the bleed-out channel of the vacuum tank body and the middle pipeline of the bleed-out alarm device are connected through the transition flange, the armoring electric thermocouple is arranged in the bleed-out alarm device, and the outlets of the bleed-out channel and the bleed-out alarm device are provided with the aluminum closing plates. The firing furnace bleed-out alarm device has simple and practical structure, lowers cost, and has the function of monitoring alarm in real time.

Description

A steel leakage alarm device for refining furnace

technical field

The utility model relates to a steel leakage alarm device for a refining furnace.

Background technique

In the currently used refining furnace, the processed ladle is hoisted into the vacuum tank, and the vacuum tank cover is covered for vacuum degassing (or oxygen blowing decarburization); The anti-leakage plate is installed, and the anti-leakage plate is designed as a cuboid box structure according to the volume of molten steel to be processed. Since the anti-leakage plate is installed in the tank, the height of the original vacuum tank increases and varies with the tonnage of molten steel to be processed. The increase is also different; for a large-tonnage refining furnace, the increase in height will increase the weight of the vacuum tank a lot, and the weight of the leak-proof plate itself will inevitably increase the weight and cost of the equipment.

Contents of the invention

The purpose of the utility model is to provide a steel leakage alarm device for refining furnaces with simple structure, practicality, reduced cost and real-time monitoring and alarm function.

The technical solution of the utility model: a steel leakage alarm device for a refining furnace, including a vacuum tank body, characterized in that: a steel leakage channel is provided at the bottom of the vacuum tank body, and a steel leakage alarm device is arranged on the steel leakage channel.

The steel leakage alarm device is composed of an intermediate pipeline, a transition flange, an armored thermocouple, and an aluminum sealing plate. The steel leakage channel of the vacuum tank is connected with the intermediate pipeline of the steel leakage alarm device through a transition flange, and the armored thermoelectric It is even installed in the steel breakout alarm device, and the outlet of the steel breakout channel is equipped with an aluminum sealing plate.

The armored thermocouple is set in the thermocouple seat through a compression nut, an O-ring and a compression ring.

The aluminum sealing plate is installed at the outlet of the steel breakout alarm device through the transition connecting seat.

The utility model has the advantages of simple structure, practicality, reduced cost, and real-time monitoring and alarm function.

Description of drawings

The present invention will be further illustrated by the accompanying drawings and descriptions of preferred embodiments below.

Fig. 1 is the assembly diagram of the existing refining furnace leak-proof disc in the vacuum tank;

Fig. 2 is a top view of the assembly of the existing refining furnace leak-proof disc in the vacuum tank;

Fig. 3 is a structural representation of the utility model;

Fig. 4 is the top view of the utility model;

Fig. 5 is a diagram of a steel breakout alarm device of the present utility model;

Fig. 6 is the assembly diagram of the armored thermocouple of the present utility model;

Fig. 7 is an assembly drawing of the aluminum sealing plate of the present invention;

Fig. 8 is a layout diagram of the utility model's accident leakage steel pit.

Explanation of the above reference numerals: 1-vacuum tank body, 2-steel breakout channel, 3-steel breakout alarm device, 4-transition flange, 5-armoured thermocouple, 6-aluminum sealing plate, 7-middle channel, 8 - Compression nut, 9-O type sealing ring, 10-pressure ring, 11-thermocouple seat, 12-transition connection seat, 13-accident leakage steel pit.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

See Fig. 1, Fig. 2: Existing refining furnace steel leakage alarm device, the treated ladle water is transferred into the vacuum tank, and the vacuum cover is covered for vacuum degassing or oxygen blowing decarburization treatment, in order to prevent the ladle in the tank from leaking , Usually, a leak-proof plate is installed at the bottom of the tank. The leak-proof plate is a box-shaped structure designed as a cuboid according to the volume of molten steel to be processed. It is divided into several parts by refractory bricks for re-smelting of steel ingots.

Referring to Fig. 3, Fig. 4 is a structural diagram of the utility model, the bottom of the vacuum tank body 1 of the utility model is provided with a breakout passage 2, and a breakout alarm device 3 is arranged on the breakout passage 2.

Referring to Fig. 5, Fig. 6 and Fig. 7, the steel breakout alarm device 3 is composed of the intermediate channel 7, the transition flange 4, the armored thermocouple 5, and the aluminum sealing plate 6. The steel breakout channel 2 of the vacuum tank body 1 and the steel breakout alarm device The intermediate pipeline 7 is connected by the transition flange 4, and the steel leakage alarm device can be replaced at any time by dismounting the transition flange 4; the armored thermocouple 2 is arranged in the steel leakage alarm device 3, and measures the temperature in the tank. If there is a steel leakage ( When the temperature exceeds 300°C, an alarm can be sent to the main control room immediately, and the armored thermocouple 5 is set in the thermocouple seat 11 through the compression nut 8, O-ring 9 and compression ring 10 to ensure the vacuum of the entire tank The sealing and thermocouple 5 are easy to disassemble. The outlet of the breakout channel steel breakout alarm device 3 is provided with an aluminum sealing plate 6, and the aluminum seal plate 6 is installed at the outlet of the steel breakout alarm device through a transition connection seat 12. Due to the low melting point of aluminum, Therefore, the end face of the transition flange is connected and sealed with the aluminum sealing plate 6. In order to ensure the vacuum tightness of the equipment, the end face of the transition connection seat is specially designed as a pointed convex platform type, and the hardness of the aluminum plate is low, and it is realized by bolts and compression washers. Metal seal.

See Figure 8. During normal smelting, the seals at all levels of the steel leakage alarm device ensure the vacuum tightness of the tank body. In case of steel leakage, inclined refractory bricks are designed in the tank to make the molten steel flow to the steel leakage port. Since the temperature of the molten steel is greater than the melting point of aluminum, The molten steel burns through the inside of the aluminum seal and flows along the backflow port outside the tank to the accident steel leakage pit with refractory materials 13, which reduces damage to the tank body and ladle, and is convenient for cleaning and secondary smelting. The steel leakage detection device is equipped with a temperature detector, which can monitor the temperature in the tank in real time. Once a steel leakage occurs, the temperature alarm signal can be directly received from the main control room, sent in real time, alarmed, and emergency measures are taken to avoid other accidents in the event of an accident. Action, safe production.

Claims (4)

1. A steel breakout alarm device for a refining furnace, comprising a vacuum tank (1), characterized in that: the bottom of the vacuum tank (1) is provided with a breakout channel (2), and on the breakout channel (2) A steel breakout alarm device (3) is provided. 2. A kind of refining furnace novel steel leakage warning device according to claim 1, is characterized in that: described steel leakage warning device (3) is made up of intermediate pipe (7), transition flange (4), armored thermoelectric Composed of couple (5) and aluminum sealing plate (6), the steel leakage channel (2) of the vacuum tank body (1) is connected with the intermediate pipe (7) of the steel leakage alarm device through a transition flange (4), and the armored thermocouple (2) It is arranged in the steel breakout alarm device (3), and the outlet of the steel breakout alarm device (3) is provided with an aluminum sealing plate (6). 3. A kind of steel leakage alarm device for refining furnace according to claim 1 or 2, characterized in that: the armored thermocouple (5) passes through the compression nut (8), the O-ring (9) and The pressure ring (10) is arranged in the thermocouple seat (11). 4. A steel breakout alarm device for refining furnace according to claim 1 or 2, characterized in that: the aluminum sealing plate (6) is installed at the outlet of the steel breakout alarm device through a transition connection seat (12).

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