PL184663B1 - Water transmission system for fire pipelines located at deeper levels - Google Patents

Abstract

A system for transferring water to fire-fighting pipelines located at deeper levels, characterized in that it has at the highest level (A), above the exploitation level (B) near the inlet shaft (1), a large overflow tank (2) connected on one side, via an inlet pipeline (4) and a pump set (6), to water galleries (7) drawing the total inflow of underground water from this level (A), and on the other side connected, via a shaft pipeline (8), to the network of fire-fighting pipelines of the deeper level (B), the capacity of this tank (2) being several times greater than the capacity of the pumped-out water galleries (7).

Description

The subject of the invention is a system of water transmission to fire-fighting pipelines located at deeper exploitation levels, used for technological purposes such as cooling of mining devices, sprinkling to reduce their dustiness and fire protection of welding works, and to extinguish fires.

Shaft pipelines with branches from the shafts at individual operating levels are used to supply the underground fire-fighting pipelines in mines. Shaft pipelines are filled from the mine's surface with industrial water from pumping of underground waterways. The static pressure in the shaft lines increases as water is introduced to deeper levels. In order not to exceed the permissible values, it is necessary to be able to reduce it in a controlled manner.

Open overflow tanks with float valves are commonly used for this purpose. At the bottom, the tanks are placed on subsequent levels in glass recesses specially made for this purpose. Starting from the mine surface, the tanks gravity feed the lower and lower level of the fire protection pipeline network.

For this purpose, a control valve with a diaphragm-spring pneumatic actuator is also known for this purpose, mounted in the lateral flow of a vertical pipeline and connecting divided flanges blanking its separate sections.

In addition, in inclined workings with underground water tanks, a system is known from the Polish patent description No. 156 896, which between the network of pipelines fed from a higher level from a higher level of the next operating level and the network of pipelines of the next lower operating level has at least one connection with a throttling-shut-off valve and on the conduit connecting the underground reservoir with the network of pipelines of the next lower level, between the underground reservoir and the connection of the conduit with a throttling-shut-off valve there is a control valve.

In the previously known systems that perform the above task, the underground networks of fire-fighting pipelines in mines are always supplied from the surface. This solution is not only expensive but also burdensome, requiring the employment of a significant number of workers both on the surface and below the mine.

The aim of the invention is to reduce the drawbacks and inconveniences of known solutions by developing a system for transferring water to fire protection pipelines without the need to pump it to the mine surface.

This has been solved according to the invention in such a way that the transmission system has a large overflow tank at a higher level, above the operating level, near the inspiratory shaft, connected on one side by an inflow pipeline and a pump set

184 663 with water galleries, drawing the total inflow of underground water from this level, and on the other hand connected by a shaft pipeline with a network of fire protection pipelines at a deeper level, the capacity of this reservoir being several times greater than the capacity of the drained water galleries.

The advantage of using the above system is its simple structure, significantly limiting the water transmission route, but also the possibility of using the entire inflow of the underground water at a higher level, and the overflow tank as a water reserve container.

The solution according to the invention is shown in the embodiment in the drawing, schematically showing the arrangement in the shaft and adjacent mine workings.

According to the invention, the water transmission system has, at a higher level A, above the operating level B, which is characterized by high water consumption, near the inlet shaft 1, a large overflow tank 2 is made, in the form of a pierced sidewalk, dammed almost to the ceiling with concrete barriers on both sides. On the inside, the tank 2 was covered with a bituminous layer that was impervious to water. It is equipped with a level gauge 3 which continuously indicates the level of its filling. It is connected, on the one hand, by an inflow pipeline 4, a connection manifold 5 and a pump set 6 with water galleries 7 of the same level A, with a capacity much smaller than the overflow tank 2, drawing the total inflow of underground water from this level A.

The pump set 6 of waterways 7 is controlled by the level gauge 3 of the overflow tank 2, which on the other side is connected through the shaft 8 and its branch with the network of fire protection pipelines 9 of the deeper operated level B.

According to the invention, the water from the inlet of the natural higher level A, stored in its waterways 7, will be pumped into the overflow tank 2 at the same level A, from where it will be fed by gravity to the fire pipe network 9 of the deeper level.

184 663

Publishing Department of the UP RP. Mintage 60 copies. Price PLN 2.00.

Claims (1)

Patent claim The system of water transfer to fire-fighting pipelines located at deeper levels, characterized by the fact that at the higher level (A), above the operating level (B), near the inspiratory shaft (1), a large overflow tank (2) is made, connected on one side by an inflow pipeline (4) and a pump set (6) with waterways (7) drawing the total inflow of underground water from this level (A), and on the other hand connected via the shaft pipeline (8) with the network of fire-fighting pipelines of the deeper level (B), the capacity of this reservoir (2) is several times greater than the capacity of the drained water galleries (7).