Efficient nitrogen injection fire extinguishing device for spontaneous combustion coal seam

Abstract

The utility model relates to the technical field of nitrogen injection fire extinguishing, in particular to an efficient nitrogen injection fire extinguishing device for a spontaneous combustion coal seam. According to the technical scheme, the device comprises a sealing cover, two connecting pipes, a spray head, a control valve and a rotating disc, the two connecting pipes are connected through a sleeve, and the sealing cover is connected to the end, away from the sleeve, of one connecting pipe in a sleeving mode; the end, away from the sleeve, of the other connecting pipe is connected to a second communicating pipe in the middle of one side of the control valve in a sleeving mode through the sleeve, the second communicating pipes are installed in the middles of the two sides of the control valve in a communicating mode, and first communicating pipes are installed in the middles of the two ends of one side of each connecting pipe in a communicating mode; and the end, away from the connecting pipe, of the first communicating pipe is sleeved with the spray head, the middle of the lower side of the rotating disc is movably installed on the control valve through a movable shaft, and supporting plates are fixed to the two ends of the lower side of the connecting pipe correspondingly. The device has the advantage that nitrogen can be conveniently injected when the spontaneous combustion coal seam is mined.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen injection fire extinguishing technology field, concretely is a kind of self-ignition coal seam efficient nitrogen injection fire extinguishing device. BACKGROUND

[0002] The principle of nitrogen injection fire extinguishing technology is mainly to inject inert gas nitrogen into the fire scene to dilute the oxygen concentration in the air, so as to extinguish the flame. After nitrogen injection, the entire space can be filled, including the hidden area near the fire source, effectively weakening or extinguishing the open fire, and inhibiting the combustion of hidden fire source. When the oxygen concentration in the air is diluted to below the concentration required for fire combustion, the flame will be extinguished.

[0003] In the self-ignition coal seam, the coal in the coal mine is prone to spontaneous combustion. In order to reduce and reduce the problem of spontaneous combustion of coal mine, when mining coal in the self-ignition coal seam, nitrogen needs to be injected to reduce the oxygen concentration, so as to inhibit the oxidation and spontaneous combustion of coal. Therefore, a device for injecting nitrogen is needed when mining in the self-ignition coal seam. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of self-ignition coal seam efficient nitrogen injection fire extinguishing device, with the advantage of being conducive to the injection of nitrogen when mining in the self-ignition coal seam, solve the problem that coal in the self-ignition coal seam, coal in the coal mine is prone to spontaneous combustion.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of self-ignition coal seam efficient nitrogen injection fire extinguishing device, including sealing cover, connecting pipe, spray head, control valve and turntable, the connecting pipe is equipped with two, two connecting pipes are connected by sleeve pipe, the sealing cover is sleeved in one connecting pipe end away from sleeve pipe, another connecting pipe end away from sleeve pipe is sleeved on the second communication pipe in the middle of control valve side by sleeve pipe, the second communication pipe is installed in the middle of both sides of control valve, the first communication pipe is installed in the middle of both ends of one side of connecting pipe, the spray head is sleeved in the first communication pipe end away from connecting pipe.

[0006] Preferably, the lower side of the turntable is movably installed on the control valve by a movable shaft.

[0007] Preferably, the lower side of the connecting pipe is fixed with a support plate at both ends, and the width of the support plate is greater than the outside diameter of the connecting pipe.

[0008] Preferably, the upper end of the support plate is provided with a circular arc in the middle, and the circular arc on the support plate corresponds to the outside of the connecting pipe.

[0009] Preferably, the diameter of the second communication pipe is smaller than the diameter of the control valve, and the diameters of the connecting pipe and the second communication pipe are equal.

[0010] Preferably, the inner diameter of the sleeve is adapted to the outer diameter of the connecting pipe.

[0011] Compared with the prior art, the utility model has the beneficial effects as follows:

[0012] 1、 the utility model discloses a connecting pipe and a spray head are set up, be favorable to the effect of nitrogen injection when spontaneous combustion coal seam is mined, according to the demand, the connecting pipe is connected and is installed between the sleeve, and the connecting pipe after connection is placed in the coal mining, and one end of the connecting pipe is connected with the control valve through the sleeve, and the end of the control valve deviating from the connecting pipe is connected with the nitrogen tank, when using, make the nitrogen in the nitrogen tank enter the connecting pipe through opening the control valve, and discharge outward through the spray head, realize reducing oxygen concentration, inhibiting coal oxidation spontaneous combustion. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the front view structural schematic drawing of the utility model;

[0014] Figure 2 It is the top view structural schematic drawing of the utility model;

[0015] Figure 3 It is the three -dimensional structure schematic drawing of the utility model;

[0016] Figure 4 It is the three -dimensional structure schematic drawing of the connecting pipe of the utility model.

[0017] In the drawing: 1, sealing cover;2, support plate;3, connecting pipe;4, spray head;5, first communication pipe;6, sleeve;7, second communication pipe;8, control valve;9, rotary table. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] Embodiment one

[0020] Please refer to Figures 1-4The utility model provides an embodiment: a kind of self-ignition coal seam high-efficient nitrogen injection fire extinguishing device, including sealing cover 1, connecting pipe 3, spray head 4, control valve 8 and carousel 9, connecting pipe 3 is equipped with two in total, two connecting pipes 3 are connected by sleeve pipe 6 between, sealing cover 1 is sleeved in one connecting pipe 3 end away from sleeve pipe 6, the end of other connecting pipe 3 away from sleeve pipe 6 is sleeved on the second communication pipe 7 of control valve 8 side middle place by sleeve pipe 6, the second communication pipe 7 is installed in the middle of both sides of control valve 8, and the first communication pipe 5 is installed in the middle of one side of connecting pipe 3, and spray head 4 is sleeved in the end of first communication pipe 5 away from connecting pipe 3.

[0021] The lower ends of the connecting pipes 3 are fixed with support plates 2, and the width of the support plates 2 is greater than the outer diameter of the connecting pipes 3.

[0022] The upper middle part of the support plate 2 is provided with a circular arc, and the circular arc on the support plate 2 corresponds to the outer side of the connecting pipe 3.

[0023] The inner diameter of the sleeve pipe 6 is matched with the outer diameter of the connecting pipe 3.

[0024] The connecting pipes 3 are connected by the sleeve pipe 6 according to requirements, and the connected connecting pipes 3 are placed at the coal mining site, and one end of the connecting pipe 3 is connected with the control valve 8 through the sleeve pipe 6, and the end of the control valve 8 away from the connecting pipe 3 is connected with the nitrogen tank.

[0025] Embodiment two

[0026] Please refer to Figures 1-4 The utility model provides an embodiment: a kind of self-ignition coal seam high-efficient nitrogen injection fire extinguishing device, compared to embodiment one, this embodiment further includes: sealing cover 1, connecting pipe 3, spray head 4, control valve 8 and carousel 9, connecting pipe 3 is equipped with two in total, two connecting pipes 3 are connected by sleeve pipe 6 between, sealing cover 1 is sleeved in one connecting pipe 3 end away from sleeve pipe 6, the end of other connecting pipe 3 away from sleeve pipe 6 is sleeved on the second communication pipe 7 of control valve 8 side middle place by sleeve pipe 6, the second communication pipe 7 is installed in the middle of both sides of control valve 8, and the first communication pipe 5 is installed in the middle of one side of connecting pipe 3, and spray head 4 is sleeved in the end of first communication pipe 5 away from connecting pipe 3.

[0027] The lower middle part of the carousel 9 is movably installed on the control valve 8 by a movable shaft.

[0028] The diameter of the second communication pipe 7 is less than the diameter of the control valve 8, and the diameters of the connecting pipe 3 and the second communication pipe 7 are equal.

[0029] In use, the nitrogen gas in the nitrogen gas tank is made to enter into the connecting pipe 3 by opening the control valve 8, and is made to be discharged outwardly through the spray head 4, so as to realize the reduction of oxygen concentration and the inhibition of the coal oxidation spontaneous combustion.

[0030] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be regarded as limiting the claims to which they relate.

Claims

1. A high-efficiency nitrogen injection device for extinguishing spontaneous combustion in coal seams, comprising a sealing cover (1), a connecting pipe (3), a spray head (4), a control valve (8) and a rotating disc (9), characterized in that: Two connecting pipes (3) are arranged, and the two connecting pipes (3) are connected through a sleeve pipe (6); the sealing cover (1) is sleeved on one end of one connecting pipe (3) away from the sleeve pipe (6); the other end of the other connecting pipe (3) away from the sleeve pipe (6) is sleeved on a second communicating pipe (7) arranged at the middle of one side of a control valve (8) through the sleeve pipe (6); the second communicating pipe (7) is arranged at the middle of the other side of the control valve (8); the first communicating pipe (5) is arranged at the middle of the two ends of one side of the connecting pipe (3); and the nozzle (4) is sleeved on one end of the first communicating pipe (5) away from the connecting pipe (3).

2. The efficient nitrogen injection device for extinguishing spontaneous combustion coal seam according to claim 1, characterized in that: The lower middle of the rotating disc (9) is movably arranged on the control valve (8) through a movable shaft.

3. The efficient nitrogen injection device for extinguishing spontaneous combustion coal seam according to claim 1, characterized in that: The lower two ends of the connecting pipe (3) are fixedly provided with support plates (2), and the width of the support plates (2) is greater than the outer diameter of the connecting pipe (3).

4. The high-efficient nitrogen injection device for extinguishing spontaneous combustion coal seam according to claim 3, characterized in that: The upper middle of the support plate (2) is provided with a circular arc, and the circular arc on the support plate (2) corresponds to the outer side of the connecting pipe (3).

5. The efficient nitrogen injection device for extinguishing spontaneous combustion coal seam according to claim 1, characterized in that: The diameter of the second communicating pipe (7) is smaller than the diameter of the control valve (8), and the diameters of the connecting pipe (3) and the second communicating pipe (7) are equal.

6. The efficient nitrogen injection device for extinguishing spontaneous combustion coal seam according to claim 1, characterized in that: The inner diameter of the sleeve pipe (6) is matched with the outer diameter of the connecting pipe (3).

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