CN218716960U - Active inert powder foamed ceramic device for inhibiting gas explosion in cooperation mode - Google Patents

Abstract

The utility model provides an initiative type inert powder foamed ceramic restraines gas explosion device in coordination, include: a gas tank in which compressed gas is contained; the powder storage tank is internally filled with inert powder, one end of the powder storage tank is correspondingly communicated with the gas storage tank through an electromagnetic valve, and the other end of the powder storage tank is correspondingly communicated with an explosion-proof shell; the foamed ceramic is assembled in the explosion-proof shell in a sliding mode, and a flame-retardant fragile plate corresponding to the foamed ceramic is arranged at one end, far away from the powder storage tank, of the explosion-proof shell; the device can be suitable for conveying pipelines and coal mining roadways, inert powder and foamed ceramic are driven to enter an explosion suppression pipeline when gas explosion occurs, the device can be repeatedly used, and the use benefit of the device is improved. The device is simple to mount and dismount, convenient to use by a user, and convenient to popularize and use, and the general adaptability of the device is improved.

Description

Active inert powder foamed ceramic device for inhibiting gas explosion in cooperation mode

Technical Field

The utility model belongs to the technical field of the natural gas is carried, concretely relates to initiative type inert powder foamed ceramic restraines gas explosion device in coordination.

Background

China has abundant coal resources, the coal still has a high proportion of primary energy in China at the present stage, the coal industry is related to the basic industry of the life line of the energy industry in China, however, the situation of safe production of the coal in China is very severe, and the gas explosion accident of a mine is one of the most frequently-occurring accidents in coal mine disasters. Gas explosion can have catastrophic consequences, including massive casualties, significant economic losses and negative social impact. The explosion suppression and disaster reduction technology of gas becomes the important factor for gas disaster prevention and control, the gas explosion suppression and disaster reduction device is the last important barrier in gas explosion prevention and control, and once an accident occurs, the explosion suppression and disaster reduction system arranged in advance can reduce the expansion of the gas explosion accident range, reduce the destructiveness of the gas explosion disaster and reduce the loss of the gas explosion accident to a greater extent.

Currently, a commonly used gas explosion suppression method is to actively spray inert powder into a gas conveying pipeline or a roadway, release inert gas through the powder, form a suppression area at the rear by utilizing the physical and chemical actions of the inert gas, cool down passing flame and block the propagation of the passing flame, but a precursor pressure wave at the front end of the gas explosion flame enlarges the flame suppression area, so that the density of an inhibitor in the suppression area is reduced, the inhibitor cannot be effectively contacted with the flame, and the suppression effect is poor.

Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough among the above-mentioned prior art, provide an initiative type inertia powder foamed ceramic restraines gas explosion device in coordination.

In order to achieve the above object, the present invention provides the following technical solutions:

an active inert powder foamed ceramic device for synergistically inhibiting gas explosion comprises:

a gas tank in which compressed gas is contained;

the powder storage tank is internally filled with inert powder, one end of the powder storage tank is correspondingly communicated with the gas storage tank through a solenoid valve, and the other end of the powder storage tank is correspondingly communicated with the explosion-proof shell;

the foamed ceramic is assembled in the explosion-proof shell in a sliding mode, and a flame-retardant fragile plate corresponding to the foamed ceramic is arranged at one end, far away from the powder storage tank, of the explosion-proof shell;

the explosion-proof shell is correspondingly arranged outside the explosion suppression pipeline, and the electromagnetic valve is opened so as to press the inert powder and the foamed ceramic into the explosion suppression pipeline through compressed gas.

Preferably, the inner wall of the explosion suppression pipeline is provided with a limiting groove corresponding to the foamed ceramic, the limiting groove is opposite to the explosion-proof shell, and a flexible buffer plate pad is arranged in the limiting groove.

Preferably, a detection unit is arranged in the explosion suppression pipeline, the detection unit is correspondingly connected to a control unit, and the electromagnetic valve is correspondingly connected to the control unit, so that when the detection unit monitors that the flame waves and the precursor pressure waves have overpressure, the control unit controls the electromagnetic valve to be opened.

Preferably, there are two detection units, and the two detection units are respectively located at two sides of the explosion suppression pipeline corresponding to the explosion-proof shell;

the detection unit, the control unit and the electromagnetic valve are correspondingly connected to a power supply.

Preferably, the air storage tank and the electromagnetic valve, and the electromagnetic valve and the powder storage tank are connected through connecting flanges;

the powder storage tank corresponds one end of the explosion-proof shell is sealed through kraft paper.

Preferably, the explosion suppression pipeline is provided with a through hole corresponding to the explosion-proof shell, and the explosion-proof shell is hermetically connected with the through hole;

and a plurality of steel pipe fixing frames are distributed on the outer wall of the explosion-proof shell, and the steel pipe fixing frames are fixed on the outer wall of the explosion suppression pipeline through bolts.

Preferably, an inflation valve is arranged on the gas storage tank, and a waterproof metal shell corresponding to the electromagnetic valve is arranged between the gas storage tank and the powder storage tank.

Preferably, a pressure gauge is arranged on the air storage tank.

Preferably, one end of the explosion-proof shell corresponding to the powder storage tank is slidably provided with a filter plate corresponding to the foamed ceramic;

the aperture of the filter plate is larger than the particle size of the inert powder.

Has the beneficial effects that: the utility model discloses in wide can being applicable to pipeline and coal mining tunnel, the device's reliable performance is high, carries out the air feed through the gas holder, is the drive inert powder and foamed ceramic entering datonation-inhibition pipeline taking place gas explosion, foamed ceramic material has better toughness, takes place to damage it less after datonation-inhibition, can used repeatedly, improves the device's use profitability. The device is simple to mount and dismount, improves the general adaptability of the device, and is convenient to popularize and use.

The phenomena of insufficient gas production pressure, uneven gas ejection and inflexible braking effect caused by chemical gas production in the prior art are eliminated. The compressed gas in the gas storage tank is used for quickly and efficiently pushing the inert powder in the powder storage tank, so that the explosion suppression speed of the explosion suppression unit is improved, and the lag effect of powder spraying is shortened; inert powder combines together with foamed ceramic material, can play synergistic purpose, foamed ceramic material can reduce flame forerunner's pressure, makes the flame front be difficult to in its inside in succession, is subdivided into a plurality of little strands, and the heat can't supply, loses heat balance easily, leads to some little flame group to extinguish, and secondly foamed ceramic is obvious to the biggest superpressure decay effect of gas explosion in the pipeline, is favorable to inert powder fully to take place to contact with the flame front and exert its explosion suppression performance, has effectively reduced the destruction that gas explosion brought.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:

FIG. 1 is a schematic view of the installation of the device for suppressing gas explosion according to the embodiment of the present invention

FIG. 2 is a cross-sectional view of a gas explosion suppression apparatus according to an embodiment of the present invention;

fig. 3 is a schematic diagram of explosion suppression after the operation of the device for suppressing gas explosion according to the embodiment of the present invention.

FIG. 1-explosion suppression piping; 2-flame waves; 3-precursor pressure wave; 4-propagation direction of flame wave and precursor pressure wave; 5-a detection unit; 6-a control unit; 7-a power supply; 8-explosion suppression unit; 9-a pressure gauge; 10, a gas storage tank; 11-a connecting flange; 12-a solenoid valve; 13-waterproof metal housing; 14-powder storage tank; 15-inert powder; 16-kraft paper; 17-a flange plate; 18-a seal gasket; 19-bolt; 20-a filter plate; 21-a ceramic foam; 22-explosion proof housing; 23-flame retardant frangible panel; 24-a limiting groove; 25-an inflation valve; 26-flexible buffer plate pad; 27-steel tube fixing frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art all belong to the protection scope of the present invention.

In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense, and may be, for example, either fixed or detachable; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1-3, an active inert powder foamed ceramic synergistic gas explosion suppression device at least comprises an explosion suppression unit 8 for suppressing gas explosion, wherein the explosion suppression unit 8 comprises a gas storage tank 10, a powder storage tank 14, an explosion-proof housing 22 and a foamed ceramic 21, wherein the gas storage tank 10, the powder storage tank 14 and the explosion-proof housing 22 are sequentially connected end to end along the same straight line, compressed gas is contained in the gas storage tank 10, the gas pressure in the gas storage tank 10 is 2Mpa to 5Mpa, inert powder 15 is contained in the powder storage tank 14, the powder storage weight is between 6kg and 40kg, one end of the powder storage tank 14 is correspondingly communicated with the gas storage tank 10 through an electromagnetic valve 12, and the other end of the powder storage tank 14 is correspondingly communicated with the explosion-proof housing 22; the gas storage tank 10 and the explosion-proof shell 22 at two ends of the powder storage tank 14 are positioned on the same straight line, the foamed ceramic 21 is assembled in the explosion-proof shell 22 in a sliding manner, and one end of the explosion-proof shell 22, which is far away from the powder storage tank 14, is provided with a flame-retardant fragile plate 23 corresponding to the foamed ceramic 21; the explosion-proof shell 22 is correspondingly installed outside the explosion suppression pipeline 1, the electromagnetic valve 12 is opened, wherein the electromagnetic valve 12 is a gas electronic valve or a gas electromagnetic valve to be opened to form a passage, the gas storage tank drives the inert powder 15 and the foamed ceramic 21 into the explosion suppression pipeline 1 through compressed gas, and the foamed ceramic 21 enters the explosion suppression pipeline 1 after bursting the flame-retardant fragile plate 23. The gas storage tank 10 eliminates the phenomena of insufficient gas production pressure, uneven gas ejection and inflexible braking effect caused by chemical gas production in the prior art, the inert powder 15 is pressed into the explosion suppression pipeline 1 through high-pressure gas, the inert powder 15 is combined with the foamed ceramic 21 material, the synergistic effect can be achieved, the foamed ceramic 21 material can reduce the flame precursor pressure, the flame front surface is not easy to be continuous in the interior, the flame front surface is subdivided into a plurality of small strands, heat cannot be supplemented, heat balance is easy to lose, partial small flame groups are extinguished, secondly, the foamed ceramic 21 has obvious maximum overpressure attenuation effect on gas explosion in the pipeline, the inert powder 15 is more favorable for being in full contact with the flame front surface to play the explosion suppression performance, and the damage caused by gas explosion is effectively reduced. In the embodiment, the explosion-proof housing 22 has a cylindrical or square column structure, and the ceramic foam 21 is adapted to the inner cavity of the explosion-proof housing 22. The explosion suppression pipeline 1 can be a gas conveying pipeline or a coal mining roadway.

In another optional embodiment, a limiting groove 24 corresponding to the ceramic foam 21 is arranged on the inner wall of the explosion suppression pipeline 1, the limiting groove 24 is arranged on one side of the explosion suppression pipeline 1 far away from the explosion-proof housing 22, the limiting groove 24 faces the explosion-proof housing 22, the limiting groove 24 is matched with the cross section of the ceramic foam 21, a flexible buffer plate pad 26 is arranged in the limiting groove 24, the flexible buffer plate pad 26 can be made of rubber, so as to prevent the ceramic foam 21 from being damaged due to impact force generated by pressing the ceramic foam 21 into the limiting groove 24, and the height of the ceramic foam 21 is greater than the width or height of a roadway or a pipeline, so as to ensure that one end of the ceramic foam 21 cannot be separated from the explosion-proof housing 22 after entering the limiting groove 24.

In another optional embodiment, a detection unit 5 is arranged in the explosion suppression pipeline 1, the detection unit 5 is a flame pressure temperature sensor, and can be installed on the upper side of the explosion suppression pipeline 1 and used for monitoring change signals generated by explosion of flame, pressure, temperature and the like, the detection unit 5 is correspondingly connected to the control unit 6 so as to convert the monitored signals generated by explosion into electric signals and transmit the electric signals to the control unit 6, the electromagnetic valve 12 is correspondingly connected to the control unit 6, the control unit 6 can be a single chip microcomputer or an editable logic controller so as to receive the monitoring signals of the detection unit 5, and when the detection unit 5 monitors overpressure of the flame wave 2 and the precursor pressure wave 3, the control unit 6 controls the electromagnetic valve 12 to be opened. In the present embodiment, the response time of the detection unit 5 is less than 15ms; the response time of the control unit 6 sending the control signal to the electromagnetic valve 12 is less than 17ms, and the electromagnetic valve 12 receives the electric signal to be opened.

In another alternative embodiment, there are two detection units 5, and the two detection units 5 are respectively positioned at two sides of the explosion suppression pipeline 1 corresponding to the explosion-proof housing 22; the detection unit 5, the control unit 6 and the electromagnetic valve 12 are electrically connected on the power supply 7 through connection so as to supply power to the utility model.

In another alternative embodiment, the gas storage tank 10 and the electromagnetic valve 12, and the electromagnetic valve 12 and the powder storage tank 14 are connected through the connecting flange 11, a sealing gasket 18 is arranged between the gas storage tank 10 and the connecting flange 11 of the electromagnetic valve 12, and a sealing gasket 18 is arranged between the electromagnetic valve 12 and the connecting flange 11 of the powder storage tank 14, so that the sealing performance is ensured. Store up the one end that powder tank 14 corresponds explosion-proof housing 22 and seal through kraft paper 16, can seal the inert powder 15 of storing up in the powder tank 14 and hold, avoid inert powder 15 to spill over under the non-required state, when opening solenoid valve 12, kraft paper 16 receives the atmospheric pressure left and right sides breakage, high-pressure gas drives inert powder 15 and gets into in explosion-proof housing 22, and break through fire-retardant fragile board 23 with foamed ceramics 21 and get into explosion suppression pipeline 1 together, fire-retardant fragile board 23 can be the tinfoil film, also can be for the material that has fire-retardant fragile characteristic, this material is not injectd here.

In another alternative embodiment, the explosion suppression pipeline 1 is provided with a through hole corresponding to the explosion-proof shell 22, the explosion-proof shell 22 is communicated with the through hole or extends into the explosion suppression pipeline 1, and the explosion-proof shell 22 is hermetically connected with the through hole to prevent high-pressure gas and inert dust from overflowing from the space between the explosion-proof shell 22 and the through hole. The explosion-proof shell 22 and the powder storage tank 14 are connected through a flange 17, a plurality of steel pipe fixing frames 27 are distributed on the flange 17, the steel pipe fixing frames 27 are fixed on the outer wall of the explosion suppression pipeline 1 through bolts 19, so that the explosion-proof shell 22 is fixed, and the explosion-proof shell 22 are fixed through locking of the bolts 19.

In another optional embodiment, the gas storage tank 10 is provided with an inflation valve 25, the gas storage tank 10 can be filled with gas without being disassembled, and the gas storage tank 10 is provided with a pressure gauge 9, so that whether the gas pressure is normal or not can be conveniently observed. A waterproof metal casing 13 corresponding to the electromagnetic valve 12 is provided between the gas container 10 and the powder storage tank 14, so that the gas container 10 and the powder storage tank 14 form a whole, and the electromagnetic valve 12 is protected to prevent the electromagnetic valve 12 from being damaged.

In another alternative embodiment, the explosion-proof housing 22 is slidably assembled with a filter plate 20 corresponding to the ceramic foam 21 at an end corresponding to the powder storage tank 14, the filter plate 20 can slide in the explosion-proof housing 22 when being subjected to air pressure, the inert powder is a dry powder fire extinguishing agent such as ammonium phosphate, sodium bicarbonate, sodium chloride, potassium chloride, etc., the aperture of the filter plate 20 is much larger than the particle size of the inert powder 15, in this embodiment, the aperture of the filter plate 20 is larger than 2.5mm. As shown in the figure, when gas explosion occurs in the pipeline, overpressure of flame waves 2 and precursor pressure waves 3 generated by the gas explosion moves in the propagation direction 4 of the flame waves and the precursor pressure waves in the pipeline, the detection unit 5 is triggered when the overpressure of the flame waves 2 and the precursor pressure waves 3 moves to the detection unit 5, the detection unit 5 converts contact pressure, brightness and temperature signals into electric signals and transmits the electric signals to the control unit 6, the control unit 6 judges the gas explosion generation according to the electric signals, after the control unit 6 confirms the signals, the electric signals generated by the power supply 7 trigger the electromagnetic valve 12 to open and form a passage, as the high-pressure gas is filled in the gas storage tank 10, the high-pressure gas in the gas storage tank 10 enters the powder storage tank 14 through the gas electromagnetic valve 12, kraft paper 16 at the bottom of the powder storage tank 14 is broken through high pressure, the high-pressure gas doped with inert powder 15 pushes the filter plate 20 and the foamed ceramic 21 material to slide downwards, the fragile flame retardant plate installed below the foamed ceramic 21 receives impact breakage, and the inert powder 15 and the high-pressure inert gas and the foamed ceramic 21 slide down into the limiting concave 24 together, so that the foamed ceramic 21 does not deviate when the explosion is suppressed.

In this embodiment, explosion suppression pipeline is a pipe coupling, and explosion suppression pipeline both ends are equipped with the connection interface that corresponds gas conveying pipeline, can connect in gas conveying pipeline to carry out explosion suppression to gas conveying pipeline, explosion suppression pipeline can be square, circular arbitrary, and both ends set up the circular connection interface that corresponds gas conveying pipeline, thereby can rapid Assembly at gas conveying pipeline.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the following claims are intended to cover all modifications, equivalents, and improvements falling within the spirit and principles of the present invention.

Claims (9)

1. An active inert powder foamed ceramic device for inhibiting gas explosion in a synergistic manner is characterized by comprising:

the gas storage tank is used for storing compressed gas;

the powder storage tank is internally filled with inert powder, one end of the powder storage tank is correspondingly communicated with the gas storage tank through an electromagnetic valve, and the other end of the powder storage tank is correspondingly communicated with an explosion-proof shell;

the foamed ceramic is assembled in the explosion-proof shell in a sliding mode, and a flame-retardant fragile plate corresponding to the foamed ceramic is arranged at one end, far away from the powder storage tank, of the explosion-proof shell;

the explosion-proof shell is correspondingly arranged outside the explosion suppression pipeline, and the electromagnetic valve is opened so as to press the inert powder and the foamed ceramic into the explosion suppression pipeline through compressed gas.

2. The active inert powder ceramic foam cooperative gas explosion suppression device according to claim 1, wherein a limiting groove corresponding to the ceramic foam is formed in the inner wall of the explosion suppression pipeline, the limiting groove faces the explosion-proof housing, and a flexible buffer plate pad is arranged in the limiting groove.

3. The active inert powder foamed ceramic synergistic inhibition gas explosion device according to claim 1, wherein a detection unit is arranged in the explosion suppression pipeline, the detection unit is correspondingly connected to a control unit, and the electromagnetic valve is correspondingly connected to the control unit, so that when the detection unit monitors that the flame waves and the precursor pressure waves are in overpressure, the control unit controls the electromagnetic valve to be opened.

4. The active inert powder foamed ceramic synergistic gas explosion suppression device according to claim 3, wherein the number of the detection units is two, and the two detection units are respectively positioned on two sides of the explosion suppression pipeline corresponding to the explosion-proof shell;

the detection unit, the control unit and the electromagnetic valve are correspondingly connected to a power supply.

5. The active inert powder foamed ceramic synergistic gas explosion suppression device according to claim 1, wherein the gas storage tank and the electromagnetic valve, and the electromagnetic valve and the powder storage tank are connected through connecting flanges;

the powder storage tank corresponds one end of the explosion-proof shell is sealed through kraft paper.

6. The active inert powder ceramic foam cooperative gas explosion suppression device according to claim 1, wherein a through hole corresponding to the explosion-proof housing is formed in the explosion suppression pipeline, and the explosion-proof housing is hermetically connected with the through hole;

and a plurality of steel pipe fixing frames are distributed on the outer wall of the explosion-proof shell, and the steel pipe fixing frames are fixed on the outer wall of the explosion suppression pipeline through bolts.

7. The active inert powder ceramic foam cooperative gas explosion suppression device according to claim 1, wherein an inflation valve is arranged on the gas storage tank, and a waterproof metal casing corresponding to the electromagnetic valve is arranged between the gas storage tank and the powder storage tank.

8. The active inert powder ceramic foam cooperative gas explosion suppression device according to claim 1, wherein a pressure gauge is provided on the gas storage tank.

9. The active inert powder ceramic foam cooperative gas explosion suppression device according to claim 1, wherein a filter plate corresponding to the ceramic foam is slidably assembled at one end of the explosion-proof housing corresponding to the powder storage tank;

the aperture of the filter plate is larger than the particle size of the inert powder.

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