RU13912U1 - UNIVERSAL STATIONARY PREVENTIVE COMPLEX OF FIRE PROTECTION OF MINES - Google Patents

Abstract

A universal stationary preventive fire protection complex for mines, including water metering units and a foaming agent, a foam mixer and a foam generator, characterized in that it is equipped with a liquid nitrogen tank with a flow meter for supplying it to the production line to the foam pipe of the mine for producing an inert suspension depending on the performance of the main components (water and foaming agent) to obtain a foam curtain on the path of the movement of fire gases into the existing mine workings, while the pressure dependence in the main foam from the range of transportation of the foam stream is determined by the schedule depending on the performance of the supply of foamed suspensions.

Description

UNIVERSAL DEFENSE MINISTER OF CROFIDAKSHCH COLLECTOR FOR PROFESSIONAL PROTECTION OF THE MINES

The utility model relates to mining and can be used to lay open space and create insulating barrier jumpers in the fight against underground fires in mines.

There is a well-known front-end filling complex, including vertical hoppers for dispensing fillers, a mixing unit with pipelines and a pump, as well as a water tank (autosvid.SSSR i 1800063, class, Е21Р 15/02, I99I).

Also known is a filling plant for setting hardening mixtures, including equipment for preparing filling mixtures in the form of a mixing unit with pipelines and mortar pump, water tanks, and a vertically mounted hopper, under which a dispenser is connected with the mixing unit (autosvid.SSSR I 1603033 Cl, E21E 15/08 1987).

A disadvantage of the known devices is that the device systems do not have sufficient conditions for dispensing the components of the mixture in order to increase the range of transportation of prophylactic filling material in hard-to-reach places of the mine,

The invention seeks to increase the functionality of the preventive complex while ensuring the transportation range of the material of the bookmark fillers.

E2IP 15/02

This goal is achieved by the fact that in the stationary preventive complex, which includes units for dosing the flow rate of water and a foaming agent, a pan-mixer and a foam generator, additional sherts with liquefied nitrogen are introduced and a flow meter

supplying it to the technology line for the production of an inert suspension on the mine foam conduit, depending on the performance of the main components (water and foaming agent) to obtain a foam curtain (barrier crosslink) on the path of fire gases in the actual mine workings, while the pressure (flow) dependence in the main foam conduit from the range of transportation of the foam stream is determined by the presented practical schedule depending on the performance of the supply of foamed suspensions,

The proposed set of distinguishing features of a stationary complex allows you to expand the functionality of the complex to ensure fire control in mines in hard to reach places, in particular in terms of pressure and productivity, taking into account the presented graphics.

In FigL shows a schematic diagram of a stationary mine complex; on sg.2 - the dependence of the pressure in the foam from the range of transportation of the foam stream at a flow rate of foamed suspensions 3,5,7,12, 15.

A utility model of a stationary preventive complex peck contains a tank of liquid nitrogen type I CTK-8, a metering pump for liquid nitrogen 2 type 22 NSG-160 / 20A; nitrogen evaporator 3; control panel 4 complex; capacity for foaming agent 5; capacity for preparing a foaming mixture 6; slurry piping 7 gave a hearth of inert foam to the shaft; foamer 8; flowmeter 9 with a dead phase; a foam generator 10; pump II injection type NBZ-120/40; metering pump 12; a flow meter 13 for compressed gas; cryogenic shield 14 control; main foam pipe 15 of the mine.

A useful model of the CPM complex works as follows.

Functionally, the UCS complex is always in operating mode. To start it, it is enough to turn on the control panel 4 of the complex to turn on the water supply from the fire line and the foaming agent from containers 5-6, which, at a given distance from the inert foam supply, is saturated through the metering pump 2 and the liquid nitrogen evaporator 3 and then through the gas flow meter 13 .for feeding to the foam shaft 15.

Depending on the transportation distance (see Fig. 2), the inert foam delivery rate is set to 3,5,7,12,15. with corresponding foam pressure in MPa. The graph was obtained experimentally at the RosNSHEGD proving ground and Kuzbass mines at the site of the utility model of the PSK complex in mines since 1989.

As a result of theoretical, developmental, laboratory, experimental, and research studies, the main scientific conclusions and practical results on the creation of high-performance useful models of stationary preventive complexes of emergency protection systems, which increase the safety of work, as well as reduce material and labor costs for the prevention of underground fires, have been made.

Authors: il / f 7 A.E. Chuprikov

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Claims (1)

A universal stationary preventive fire protection complex for mines, including water metering units and a foaming agent, a foam mixer and a foam generator, characterized in that it is equipped with a liquid nitrogen tank with a flow meter for supplying it to the production line to the foam pipe of the mine for producing an inert suspension depending on the performance of the main components (water and foaming agent) to obtain a foam curtain on the path of the movement of fire gases into the existing mine workings, while the pressure dependence in the main foam from the range of transportation of the foam stream is determined by the schedule depending on the performance of the supply of foamed suspensions.