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Hearth overtemperature protection device

A temperature protection and furnace technology, used in furnace safety devices, furnaces, crucible furnaces, etc., can solve problems such as open circuit, aging of wire insulation, and over-temperature protection devices that cannot continue to work for a long time.

Inactive Publication Date: 2019-12-03
ANHUI FENGHUI METAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the melting furnace is smelting, its internal temperature can reach more than 1,000 degrees Celsius, and its outer wall temperature can also reach 80 degrees Celsius. Using a circuit control system can easily cause the insulation layer of the wires in the circuit to age and break, resulting in the failure of the over-temperature protection device. work continuously for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as Figure 1-4 As shown, a furnace overtemperature protection device includes a heat conduction rod 11. The heat conduction rod 11 extends through one end of the seal cylinder 2 to the inside of the seal cylinder 2. The seal cylinder 2 is filled with an expansion medium, and the seal cylinder 2 communicates with the slide cylinder 3. The cylinder 3 is provided with a first piston 12 slidingly connected to the inner wall of the sliding cylinder 3, the side of the sliding cylinder 3 is connected to the connecting cylinder 4, and the connecting cylinder 4 is provided with a sliding rod 15 slidingly connected to it, and one end of the sliding rod 15 is connected to the second piston. 18 is fixedly connected, and the other end of the connecting cylinder 4 is connected to the pressure switch 8 connected to the gas valve 9 through the pressure pipe 7, and the gas valve 9 is connected to the gas pipe 10.

[0022] When the temperature in the furnace rises, the heat pipe ris...

Embodiment 2

[0024] Such as Figure 1-4 As shown, a furnace overtemperature protection device includes a heat conduction rod 11. The heat conduction rod 11 extends through one end of the seal cylinder 2 to the inside of the seal cylinder 2. The seal cylinder 2 is filled with an expansion medium, and the seal cylinder 2 communicates with the slide cylinder 3. The cylinder 3 is provided with a first piston 12 slidingly connected to the inner wall of the sliding cylinder 3, the side of the sliding cylinder 3 is connected to the connecting cylinder 4, and the connecting cylinder 4 is provided with a sliding rod 15 slidingly connected to it, and one end of the sliding rod 15 is connected to the second piston. 18 is fixedly connected, the other end of the connecting cylinder 4 is connected to the pressure switch 8 connected to the gas valve 9 through the pressure pipe 7, the gas valve 9 is connected to the gas pipe 10, and the first piston 12 is far away from the end of the sliding cylinder 3 con...

Embodiment 3

[0027] Such as Figure 1-4 A furnace overtemperature protection device, comprising a heat conduction rod 11, the heat conduction rod 11 extends through one end of the seal cylinder 2 to the inside of the seal cylinder 2, the inside of the seal cylinder 2 is filled with an expansion medium, the seal cylinder 2 communicates with the slide cylinder 3, and the inside of the slide cylinder 3 There is a first piston 12 slidingly connected to the inner wall of the sliding cylinder 3, the side of the sliding cylinder 3 is connected to the connecting cylinder 4, and the connecting cylinder 4 is provided with a sliding rod 15 slidingly connected to it, and one end of the sliding rod 15 is fixedly connected to the second piston 18 The other end of the connecting cylinder 4 is connected to the pressure switch 8 connected to the gas valve 9 through the pressure pipe 7, the gas valve 9 is connected to the gas pipe 10, the other end of the compression spring 16 is fixedly connected to the thr...

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Abstract

The invention provides a hearth overtemperature protection device and relates to the melting furnace field. The protection device comprises a heat conducting rod, the heat conducting rod penetrates through one end of the sealing cylinder and extends into the sealing cylinder; the sealing cylinder is filled with an expansion medium; the sealing cylinder is communicated with the sliding cylinder; afirst piston in sliding connection with the inner wall of the sliding cylinder is arranged in the sliding cylinder; the side face of the sliding cylinder is connected with a connecting cylinder, a sliding rod connected with the connecting cylinder in a sliding mode is arranged in the connecting cylinder, one end of the sliding rod is fixedly connected with a second piston, the other end of the connecting cylinder is in transmission connection with a pressure switch connected with a gas valve through a pressure pipe, and the gas valve is connected to a gas pipe. According to the invention, thetemperature in the hearth is prevented from exceeding a preset value, the working performance is stable at high temperature, the measurement deviation caused by circuit heating faults is avoided, andthe device is safer and more durable.

Description

technical field [0001] The invention relates to the field of melting furnaces, in particular to a furnace overtemperature protection device. Background technique [0002] Melting furnaces are widely used in the metal smelting industry. In metal smelting, the temperature in the furnace is raised through external energy supply, so that the smelted metal reaches the melting point, so that the metal can be melted. After the metal is completely melted, the temperature in the furnace needs to be increased. Keep within a certain range, so that impurities in the metal are continuously precipitated, and at the same time ensure that the temperature is within the acceptable range of the melting furnace, so as to avoid damage to the furnace or even safety accidents caused by excessive furnace temperature. In the prior art, electrical temperature detection devices are often used to detect The temperature is detected, the real-time reaction data is connected through the circuit, and the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B14/08F27B14/20F27D21/00
CPCF27B14/08F27B14/20F27D21/00F27D2021/0057
Inventor 张育玮张枫杨勇
Owner ANHUI FENGHUI METAL
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