Local booster-type ventilation system

Abstract

The invention relates to a local booster-type ventilation system. The system comprises a main fan, wherein the main fan conveys external air to a working face in a roadway by means of an air inlet duct and an air outlet duct, the air inlet duct and the air outlet duct are sequentially in communication, a booster fan is arranged between the air inlet duct and the air outlet duct, and a controller is further included, electrically connected with the main fan and the booster fan separately and used for controlling on-off states of the main fan and the booster fan. According to the system, the booster fan is arranged between the air inlet duct and the air outlet duct, so that the defect that in the prior art, due to the fact that a distance of an air duct is lengthened, ventilation pressure exceeds a pressure resistance limit of the air duct, and the air duct is broken is overcome; pressure sensors are arranged on the inner side and the outer side of an air inlet connector, a pressure difference value can be detected in time, and then air supply amounts of the main fan and the booster fan can be adjusted in time; and the structure design is ingenious, construction is easy and convenient, operation is easy, a working environment of a mine working face is improved, accidents of air duct breakage and working face air stopping can be effectively prevented, and safety and reliability are achieved.

Description

technical field

[0001] The invention relates to the technical field of mine ventilation, in particular to a local pressurized ventilation system. Background technique

[0002] At present, all air supply operations for the mine construction roadway (tunnel) excavation face are installed at a certain distance from the entrance of the roadway (more than 10 meters in coal mine safety regulations), and the fresh air is always sent to the end of the construction roadway through the air duct. The excavation face, that is, how far the roadway needs to be constructed, how long the air duct must be connected and at least 10 meters longer than the roadway.

[0003] The construction roadway is ventilated through the air duct for a long distance, and there are problems of air duct resistance and air leakage. In order to ensure the air volume of the fresh air reaching the roadway excavation working face, at present, the power of the fan at the entrance is increased, and the ventilation p...

Examples

Embodiment Construction

[0039] In the description of the present invention, unless otherwise specified, "plurality" means two or more. The orientation or state relationship indicated by the terms "inner", "upper", "lower" and the like are based on the orientation or status relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the No device or element must have a specific orientation, be constructed, and operate in a specific orientation and therefore should not be construed as limiting the invention.

[0040] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mechanical connection or electrical connection; it can be direct connection or ...

technical field

[0001] The invention relates to the technical field of mine ventilation, in particular to a local pressurized ventilation system. Background technique

[0002] At present, all air supply operations for the mine construction roadway (tunnel) excavation face are installed at a certain distance from the entrance of the roadway (more than 10 meters in coal mine safety regulations), and the fresh air is always sent to the end of the construction roadway through the air duct. The excavation face, that is, how far the roadway needs to be constructed, how long the air duct must be connected and at least 10 meters longer than the roadway.

[0003] The construction roadway is ventilated through the air duct for a long distance, and there are problems of air duct resistance and air leakage. In order to ensure the air volume of the fresh air reaching the roadway excavation working face, at present, the power of the fan at the entrance is increased, and the ventilation p...

Examples

Embodiment Construction

[0039] In the description of the present invention, unless otherwise specified, "plurality" means two or more. The orientation or state relationship indicated by the terms "inner", "upper", "lower" and the like are based on the orientation or status relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the No device or element must have a specific orientation, be constructed, and operate in a specific orientation and therefore should not be construed as limiting the invention.

[0040] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mechanical connection or electrical connection; it can be direct connection or ...

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