SU1530787A1 - Inflatable stopping - Google Patents

Abstract

The invention relates to the mining industry and can be used to control the ventilation during normal and emergency modes of ventilation of mine workings. The goal is to expand the field of use of the inflatable lintel by allowing it to be remotely moved and erected, increasing the safety of mine rescue operations and the reliability of the inflatable lintel. For this, the pneumatic chambers 3 are fixed along the perimeter of the cross section of the end of the flexible duct 2. The latter has a sealing element and has openings on its side surface for communication with the pneumatic chambers 3. The cross-sectional area of the pneumatic chambers 3 increases from the base and is installed with the possibility of a multiple increase in their length and tight connection side surfaces of adjacent pneumocameras 3 with each other. On the end surfaces of the pneumatic chambers 3, valves 4 are placed on the side of the duct 2. To reduce costs and accelerate dismantling work when using an inflatable jumper for multiple use, each pneumatic chamber 3 has a flexible cable 10. One end of the rod 10 is connected to a large base of the pneumatic chamber 3 and the other - with air duct 2. The end part of the inflatable jumper together with the compact folded shells of the pneumatic chambers 3 is placed inside the vertical part of the duct. Thereafter, the non-reversed part, together with the end part, is disconnected. 1 hp f-ly, 8 ill.

Description

The invention relates to the mining industry and can be used to control the ventilation during normal and emergency modes of ventilation of mine workings.

The purpose of the invention is to expand the field of application of the inflatable lintel due to the possibility of its distant movement and erection, increasing the safety of mine rescue operations and the reliability of the inflatable lintel.

Figure 1 shows an inflatable bridge after its construction; in Fig.2, section A-A in Fig.1; on fig.Z - transportation of an inflatable jumper for emergency development; on fn.4 - section bb in fig.Z; in FIG. 3, section BB, in FIG. 1; in FIG. 6, a pneumatic chamber with a flexible rod inside.

The inflatable bridge consists of a source of pneumatic energy, which is a local ventilation fan, a flexible duct 2, on which sealed pneumatic chambers 3 are fitted to the perimeter with a fan, equipped with pressure reducing valves 4 and openings 5. Pneumatic chamber 3 is made of an airtight tubular fabric, for example, a truncated cone connected to the flexible duct 2, for example, sewn or glued along the perimeter of the smaller base 6. The larger base 7 of the pneumatic chamber 3 is obtained as a result of turning inside Nevmocamera 3 of the end 8 of its shell 9. The end 8 of the shell 9 of the pneumocamera 3 is hermetically sealed or welded around the perimeter of the shell 9 and connected to flexible duct 10 with a flexible air duct 2. End 1I of a flexible air duct 2 inflatable jumper is plugged with a sealing element (not shown) . When remotely moving the inflatable jumper (FIG. 3), its end portion is located inside the un-turned portion 13 of the flexible duct 2 (FIG. 4). At the time of the remote movement of the end part 12 (Fig. 3) of the inflatable jumper, there is an end 14 at the end of the flexible duct 2.

Preparing the device to work. For this, the end portion 12 of the inflatable web is brought to a state that is convenient for transportation (Fig. 3). This is achieved by wrapping.

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shell 9 inside the pneumocamera 3. At the same time, the shell 9 is folded for compactness, for example, layers in the form of a roll (Fig. 4. As a result of this operation, the pneumocamera 3 takes a very compact form, whereby the total volume of all pneumocameras 3 is insignificant. After that, flexible the duct 2 is inverted and the end part 12 of the inflatable jumper is placed inside the non-inverted part 13 of the flexible duct 2.

Inflatable jumper works as follows.

The air flow from the pneumatic power source 1, which is the local ventilation fan, enters the inside of the flexible duct 2. Under the action of excessive air pressure, the end 14 of the dead-end part of the flexible duct 2 generates an axial force that turns out, runs a flexible duct 2 on the mine working soil and at the same time, the end part 12 of the inflatable lintel inside the flexible duct 2 is interlocked to the construction site (Fig. 1). During transportation, the end part 12 of the inflatable jumper of the flexible duct 2 of the pneumatic chamber 3 cannot be inflated, since this is opposed by the unscrewed part 13 of the flexible duct 2, which compresses the end part 12 of the inflatable jumper tightly with excessive air pressure.

After the end part 12 of the inflatable jumper is delivered to the installation site. The end part 12 is removed from the flexible duct 2 under the influence of axial force. At this moment, the air from it through the holes 3 enters the pneumatic chambers 3 and they inflate. Since the pneumatic chambers 3 are installed around the fan, the flexible duct 2, are filled with a variable cross section and can multiply the length and area of the larger base 7, the pneumatic chambers 3 can form various shapes, such as a cylinder, a polyhedron, etc., the perimeter of which under the effect of excess pressure on the bolus, the base 7 is substantially increased. This is because under the action of excess

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the air pressure on the larger base 7 of the pneumatic chamber 3, made at times transversely, wrapped part of the shell 9 of the inner chamber 3 is inverted and removed from the inside of the pneumatic chamber 3, the height and area of the larger base 7 of the pneumatic chamber 3 increasing, and this leads to an increase in the perimeter of the end part 12 Inflatable jumpers Due to the growth of the larger base 7, the force increases, it turns out and removes the casing 9 from inside the pneumocamera 3, due to which the casing 9 fits tightly to the walls of the mine workings. R turn when performing pneumatic chambers 3 with variable cross-section independently of each other and their fan arrangement, an inflatable jumper can re-cover the mine workings of any cross-section. This is achieved by the fact that the height and area of the base 7 of each pneumatic chamber 3 varies independently of each other until the larger base 7 P1 {of the chamber 3 is pressed tightly against the wall of the mine workings. After the erection of the inflatable bridge, the valves 4 are opened and the air from the pneumatic chambers 3 enters the mine workings and it is ventilated. By installing the pneumatic chambers 3 around the perimeter of the cross section of the ventilation pipe 2 with the possibility of an airtight connection of their side surfaces 9, the possibility of ingress of harmful gases from the - for the bridged space of a dead-end development in its ventilated part. It should be noted that during the construction and operation of inflatable jumpers su-DiecTByeT, the probability of damage to the shells of 9 pneumatic chambers 3 is high. As a result of the tightness of the pneumatic chambers 3, the inflatable jumpers abruptly lose the ability to perform the task. All known technical strands have this disadvantage. The proposed device ensures the performance of the task even with repeated damage to the shells of 9 pneumatic chambers. This is achieved by the fact that with the appearance of mechanical damage to pneumatic chambers 3, the aerodynamic resistance of the ventilation duct 2 and pneumatic chambers 2 decreases.

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is coming. T5 as a result, the flow rate of the local ventilation fan 1 is increased. At the same time, the excess air pressure inside the pneumatic chambers 3 is somewhat reduced. However, due to the fact that this overpressure is applied to the larger base 7 of the pneumatic chamber 3, which has a variable cross section, and can multiply its height and the height of the larger base 7, there is sufficient force for tight pressure

5 large base 7 pneumatic chambers 3 to the surface of the mine workings.

In order to enable demolition work with the reusable use of an inflatable jumper inside the lenemokamera 3, the bend 10 bends and connects the base 7 of the pneumo-chamber 3 to the ventilation duct 2. The disassembly works are performed in the following order. The excess air pressure in the inflatable jumper decreases, which is achieved by reducing the pressure of the fan 1 when regulating, for example with a gate (not shown J, by the air flow at the suction side of the fan 1. Then the end 11 of the flexible duct 2 is partially depressurized, while the excess pressure of the air entering pneumatic chambers 3 will be reduced, but still sufficient to maintain pneumatic chambers 3 in an inflated state. Depressurization of the end 1I of the ventilation duct 2 provides access to flexible pipes 10. When tightened and the flexible tube g 10 the end 8 of the sheath 9 of the pneumatic chambers 3 moves in the direction of the aperture 5. As a result, the length of the pneumatic chambers 3 is reduced.

5 After the end 8 of the sheath 9 of the pneumatic chambers 3 is pulled through the opening 5 in the ventilation duct, the end 8 of the sheath 9 is compactly folded in layers in the form of a roll. Then the fan 1 is turned off. After that, the end part 12 of the inflatable jumper, which is the end I 1 of the flexible duct 2 together with the compactly folded shells 9 of the pneumatic chambers 3, is placed inside the non-turned part 13 of the flexible duct 2. After that the part 13 is not turned together with the placed in it, the end portion 12 is detached.

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for example, cutting off the flexible duct 2. When re-using the inflatable jumper, the non-twisted portion 13 is connected via a quick-release coupling to the flexible duct 2,

Claims (1)

1. Inflatable bridge, including a flexible duct, the end of which is connected to the bases of interconnected pneumatic chambers of elastic airtight material of variable cross section, having valves, characterized in that, in order to expand the area of inflatable jumper junction due to its remote movement and building, improving the safety of mountain rescue operations and the reliability of the inflatable lintel, pneumatic chamber fixed around the perimeter of the pope 0 five the river section of the end of the flexible duct, which is provided with a sealing element, has openings on its side surface for communication with the pneumatic chambers, while the cross-section of the pneumatic chambers increases from the base, and they are installed with the possibility of repeatedly increasing their length and tightly connecting the side surfaces of the adjacent pneumatic chambers the other, and the valves are located on the end surfaces. pneumatic chambers from the flexible duct. I 2, The jumper in accordance with clauses 1, 1, and TL is often so that, in order to reduce costs and accelerate dismantling work when using an inflatable jumper for multiple use, each pneumatic chamber is equipped with a flexible rod, one end of which is connected to the inflatable base of the pneumocamera, and the other with a flexible duct. . g fie.Z 6-B l-in fie. P FI.5 Compiled by L. Serova. Editor S. Patrusheva Tehred M. Khodanich Proofreader V. Kabagschy Order 7918/35 Circulation 410 VKSH-SHI State Committee on Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., A / 5 ....... "..". ".." .- "...." "....". ".. V-" "1, K." .. ".. M. ".-. | ... M "..". Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 FIG. 6 Backsplash