Protective sealing door for underground refuge chamber

Abstract

The invention discloses a protective sealing door for an underground refuge chamber. The protective sealing door comprises a door frame and a door plate, wherein the door plate is arranged on the door frame through a rotation shaft; a locking mechanism for locking the door plate on the door frame is arranged on the door plate, a plurality of first reinforcing ribs for reinforcing the strength of the door plate are arranged in the door plate; heat-insulating materials, namely aerogel heat-insulating felts are filled among the reinforcing ribs; at least two annular sealing rings, namely flame-resisting sealing rings are arranged at the joint of the door plate and the door frame; and the periphery of the door plate is locked by the locking mechanism. According to the protective sealing door, the aerogel heat-insulating felts which can bear the temperature of 1,400 DEG C to the maximum are filled in the door plate, so that the door plate can resist high temperature generated during explosion, and the high temperature is insulated out of the refuge chamber; at least two sealing rings which are made of flame-resisting, anti-static, high temperature-resisting and oil-resisting materials are arranged on the contact surface of the door plate and the door frame, so that the protective sealing door has a good sealing effect.

Description

technical field [0001] The invention relates to the technical field of underground refuge chamber manufacturing, in particular to a protective airtight door for an underground refuge chamber that integrates three functions of anti-explosion and pressure resistance, heat insulation and airtightness. Background technique [0002] In the process of coal mine production, there are always threats from objective factors such as water, fire, gas, coal dust, and roofs underground. Some mines also have new dangerous and harmful factors such as geothermal heat, corrosive substances, and radioactive substances. These areas may have high temperature, high humidity, high dust flying, high gas concentration, corrosive gas, many disaster-causing factors, high risk level, and the risk of catastrophic accidents is very high. [0003] The interim regulations issued by the state on the construction and management of emergency avoidance systems in coal mines are formulated in accordance with th...

AI Technical Summary

Problems solved by technology

This kind of protective airtight door has the following defects: 1. The sealing effect is not good, because only a circle of sealing strip is arranged on the outer periphery of the door leaf, and the sealing strip does not use a flame-retardant sealing ring of flame-retardant, antistatic, high-temperature resistant, and oil-resistant materials. During use, the sealing ring is easily damaged due to high temperature or long-term use, which leads to poor sealing effect of the entire protective airtight door; 2. The heat insulation effect is not good at high temperature, and the door leaf is filled with heat insulation cotton, which can withstand at most The temperature is 700°C. If a gas explosion occurs below the mine, the temperature at this time cannot be below 700°C. Once the temperature exceeds this temperature, the heat insulation cotton will be damaged, so that the high heat will be transmitted into the refuge chamber, resulting in The environment in the refuge chamber is deteriorating; 3. The overall anti-explosion impact ability is not strong. Since the wedge-shaped blocks driven by the connecting rod mechanism are only set on both sides of the door leaf to lock the door leaf, when the entire door leaf is subjected to explosion impact, due to the upper and lower sides Without the wedge-shaped block driven by the connecting rod mechanism, the upper and lower sides of the door leaf are easily deformed, and the deformed door leaf will have problems of poor sealing, that is, air leakage, water leakage, etc., resulting in a relatively airtight and safe interior of the chamber. The environment is destroyed

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