RU82767U1 - PREVENTIVE STATIONARY COMPLEX OF MINE FIRE PROTECTION - Google Patents

Abstract

Preventive stationary mine fire protection complex, including water metering units and a foaming agent, pulp mixing unit and gasification unit, characterized in that the preparation of a foamed suspension of a certain consistency is equipped with a control panel for valves installed on the manifold, metering the supply of water and clay pulp and their mixture in storage tank for pulp and further to the mixing chamber of the preventive foam generator and to the production line of the foam pipe, and further to the group a new well, equipped with a tap outlet with a valve, while a nitrogen stationary gasification unit, which is located in the cryogenic room of the complex equipped with exhaust ventilation, is used as a jet stream of transporting gas.

Description

The utility model relates to mining and can be used to localize and extinguish underground fires in the worked out part of coal seams through wells from the surface.

Known mobile filling complex, including vertical hoppers for dispensing aggregates, a mixing unit with pipelines and a pump, as well as a capacity for inputs (ed. Certificate. USSR No. 1800063, class E21F 15/02, 1991).

A well-known universal stationary preventive complex for fire protection of mines, including a metering unit for the consumption of water and a foaming agent, a foam mixer and a foam generator, as well as a liquid nitrogen tank with a flow meter for its supply to the production line to the mine foam duct (description of PM to certificate No. 13912, Е21F 15/02, 1999 patents No. 2628-2002, No. 28730-2003, No. 45161-2004).

A disadvantage of the known complexes is that under conditions of negative temperatures or requirements to increase the productivity of injection of the foamed suspension, there are no elements for heating compressed gaseous nitrogen and elements that increase the range of transportation of foamed suspensions through the mine workings of mines and other disadvantages.

The purpose of the utility model is to increase the productivity of injection of foamed pulp into a preventive well and to increase the range of its transportation through mine workings by adjusting the pulp consistency to a predetermined composition.

This goal is achieved by the fact that the preventive stationary complex of fire protection of the mine, which includes units for dispensing water flow and a foaming agent, a mixing unit for the pulp and a gasification unit, while preparing a foamed suspension of a certain consistency, is equipped with a control panel for valves installed on the manifold, dispensing water and clay pulp and mixtures thereof on

the capacity of mechanical mixing of the complex and then into the mixing chamber of the preventive foam generator, where the foaming agent and nitrogen gas are actively mixed, after which the solution is sent to the production line of the foam pipe, and to the group well equipped with a tap with a valve, while the transport gas is used as a jet stream nitrogen stationary gasification unit, which is located in a special cryogenic room of the complex, equipped with exhaust ventilation.

The proposed set of distinctive features of the complex allows to provide a high integrated function of the preventive complex for the prevention, localization of extinguishing underground fires through wells drilled from the surface with the possibility of increasing the productivity of preparing and supplying foamed suspensions and increasing the range of their transportation through mine pipelines.

The figure shows a schematic diagram of a stationary preventive complex for mine fire protection with the following reference designation: 1 - fan; 2 - control panel for the supply of gaseous nitrogen; 3 - pre safety valve and membrane; 4 - entrance door of the cryogenic room; 5 - preventive foam generator "SCREEN"; 6 - safety tap with valve; 7 - group well; 8 - pump for the supply of foaming liquid; 9 - storage tank for pulp; 10, 15 - a room-complex; 11 - water pipeline; 12 - slurry pipeline with a mill FSM-13 (not shown); 13 - collector dosing the supply of water or clay pulp - valve control panel; 14 - metering pump for supplying a foaming agent; 16 - tank for foaming agent; 17 - stationary gasification unit SSU-8000-500 / 200; 18 - nitrogen gasifier; 19 - tank TsTK-8 / 0.25.

A useful model of a preventive inpatient complex works as follows.

This complex was developed according to the technical specifications of RosNIIGD and installed at the Ziminka mines and them. Voroshilov and them. Dzerzhinsky LLC UK "Prokopyevskugol" and provides fire protection for layers

"Powerful", "Gorely" and "Nameless", prone to sudden emissions of coal and gas and other mines of Kuzbass.

Industrial and experimental tests of a useful model of the device consisted of a fundamental economic assessment and conclusions about the health of the proposed technological scheme for the preparation and supply of prophylactic mixtures of local raw materials (slag, ash, clay, bentonite). Work on the use of the APShP unit for the purpose of testing for operability was carried out at the site of the Ziminka Mine OJSC industrial site. In the future, it will be tested for isolation of endogenous fires No. 805 and No. 561 in the Powerful formation.

Experimental studies: conducted on the material of the slag of the boiler mine and local clay.

The objective of the experimental tests was as follows:

- identification of the operability of the aggregate system of the APSHP (development of specialists from RosNIIGD AND OAO Ziminka Mine) in terms of system performance and reliability;

In the process of performing bench mine research, it turned out to be most acceptable to use a screw pump NB3-120 / 40 with a shaft speed using a five-speed gearbox of the ZIL-157 machine. During the tests, the SCREEN pressure foam generator unit was used (certificate. "27161, 2002 ) the advantage of which is a replaceable generator cassette, which makes it possible to test various methods of generating foam.

The complex is additionally equipped with a control panel 13 valves installed on the collector, dosing the supply of water and clay pulp and their mixture to the tank 9 of mechanical mixing of the complex and then into the mixing chamber of the preventive foam generator 5, where the foaming agent and nitrogen gas are actively mixed, after which the solution is sent to the production line of the foam pipe, and to the group well 7, equipped with a tap with a valve, while using the transporting gas as a jet stream using tsya nitric stationary gasification plant DGS-8000.

A useful model of the preventive complex has been developed and implemented by the authors of the application for Ziminka Mine OJSC and Tsentralnaya Mine LLC Prokopyevskugol Management Company LLC for the protection of Powerful, Gorely and Bezymyanny coal seams, as well as at the mine named after Lenin OJSC Mezhdurechensk Coal Company and other mines of Kuzbass, on horizons with outburst formations prone to sudden emissions of coal, rock, gas and rock blows.

Claims (1)

Preventive stationary mine fire protection complex, including water metering units and a foaming agent, pulp mixing unit and gasification unit, characterized in that the preparation of a foamed suspension of a certain consistency is equipped with a control panel for valves installed on the manifold, metering the supply of water and clay pulp and their mixture in storage tank for pulp and further to the mixing chamber of the preventive foam generator and to the production line of the foam pipe, and further to the group a new well, equipped with a tap outlet with a valve, while a nitrogen stationary gasification unit, which is located in the cryogenic room of the complex equipped with exhaust ventilation, is used as a jet stream of transporting gas.