KR102139695B1 - Device forventing the explosion pressure and preventing the flame discharge - Google Patents

Abstract

The present invention relates to an explosion pressure discharge and flame discharge prevention device that has a function of completely and reliably extinguishing flames of a combustible gas regardless of the explosion class of the gas, and reducing pressure due to the explosion of the gas, inside. A receiving body provided with a first communication unit for forming a space and communicating the internal space with a gas flow path through which the gas flows, and a blocking unit, receiving body provided in the interior space and selectively blocking the first communication unit according to the internal pressure of the gas flow path A flame barrier provided in the second communication unit and the second communication unit capable of discharging gas by communicating with the inside space outside and provided with a fiber refractory insulation material to remove the flame and relieve the pressure to discharge the gas. It provides an explosion pressure discharge and flame release prevention device comprising a layer.

Description

Device forventing the explosion pressure and preventing the flame discharge

The present invention relates to an apparatus for preventing explosion pressure discharge and flame discharge, and more particularly, has a function of completely and reliably extinguishing the flame of a combustible gas irrespective of the explosion class of the gas, and reduces pressure due to gas explosion. It relates to a device for preventing explosion pressure discharge and flame release.

The explosion pressure discharge and flame release prevention device is mounted on the crankcase of the ship's internal combustion engine, fuel supply duct, INLET MANIFOLD, etc., and when high pressure occurs due to internal blast, etc. It is a device that prevents damage and maintains the inside under normal pressure. Furthermore, if the high temperature flame caused by the explosion is released to the outside, the human body or various devices suffer fatal damage, so the explosion relief valve has a flame barrier layer to prevent the flame from being discharged to the outside. It is installed in. Such explosion pressure discharge and flame release prevention devices are also referred to as explosive relief valves or explosion venting devices. Recently, various devices have been developed that can reduce the pressure while extinguishing the flames caused by the explosion.

Examples are the explosion relief valve disclosed in Patent Document 1 (Domestic Registration Patent Publication No. 10-767283) and the explosion-reducing valve disclosed in Patent Document 2 (Domestic Registration Patent Publication No. 10-0350746). The flame barrier layer provided in the explosion relief valve disclosed in Patent Literature 1 is a multi-layered winding of a metal net formed by intertwining a flame-removing layer (6a) and a metal wire in a lattice shape by winding a corrugated metal strap in multiple layers in a horizontal direction. It consists of a flame heat removal auxiliary layer (6b) formed by taking.

However, the flame barrier layer of Patent Literature 1 had a problem in that a large number of portions failing to form a passage due to overlapping between corrugated metal straps. The layer has a problem in that it cannot be satisfied with the decompression performance itself due to gas discharge and is treated as a defective product.

On the other hand, the explosion-reducing valve disclosed in Patent Document 2 is provided with at least one flame blocker having a low pressure resistance installed in the gas path. Such a flame blocker is composed of a plate material arranged in layers with a gas flow direction end, and in particular, at least a plate width A part is formed in an irregular waveform.

However, the explosion-reducing valve disclosed in Patent Literature 2 has a small heat transfer area, and thus has a possibility of flames being reversed. In particular, the gap between the plates after the explosion is unevenly spread, thereby implicating the possibility of backfire in a subsequent explosion. There was a problem.

The present invention is to provide an explosion pressure discharge and flame release prevention device that can be manufactured with a simple structure and process, thereby improving productivity and reducing costs.

The present invention provides an explosion pressure discharge and flame discharge prevention device that can effectively maintain a sufficient pressure-reducing performance by ensuring a stable gas discharge passage area, but can effectively block flame eruption and cool the discharge gas. I want to.

The present invention, through one embodiment, by using a fiber refractory insulating material in the gas discharge cylinder to maintain the decompression performance through gas discharge, but prevents explosion of explosion and discharge of flame that can effectively perform the flame ejection blocking and cooling of the discharge gas It is intended to provide a device.

The present invention, in order to solve the above-mentioned problems, an inner space is formed inside, the receiving body is provided with a first communication unit for communicating the inner space with a gas flow path; A blocking unit provided in the interior space and selectively blocking the first communication unit according to the internal pressure of the gas flow path; A second communication unit provided in the accommodation body and capable of discharging gas by communicating the internal space with the outside; And a flame barrier layer provided on the second communication unit and provided with a fiber refractory insulating material to remove the flame and relieve the pressure to discharge the gas.

The flame barrier layer includes a first barrier layer including a metal plate having a plurality of openings; And a second barrier layer including a mesh layer made of a plurality of first wires and a plurality of second wires traversing the first wire. The first barrier layer and the second barrier layer further include: Arranged so as to intersect the discharge direction, the fiber refractory insulating material may be arranged side by side with the first barrier layer and the second barrier layer.

The flame barrier layer includes a first flame barrier layer located inside the second communication portion; A second flame barrier layer located outside the second communication portion; And a third flame barrier layer disposed between the first flame barrier layer and the second flame barrier layer and made of the fiber refractory insulating material, wherein each of the first and second flame barrier layers is a metal plate having a plurality of openings. ; And a mesh formed in parallel with the metal plate and comprising a plurality of first wires and a plurality of second wires traversing the first wires.

The flame barrier layer includes a metal plate having a plurality of openings; A mesh comprising a plurality of first wires and a plurality of second wires traversing the first wire; And a fiber refractory insulating material including ceramic wool that is not exposed to the inner space and the outer space of the receiving body by at least one of the metal plate and the mesh.

The plurality of openings may occupy an area corresponding to a part of the area of the first barrier layer.

In addition, the present invention is a backfire prevention device installed in the gas flow path so as to extinguish (화) the flame flowing back by the gas explosion; An opening/closing valve that opens and closes the gas flow path and communicates with the backfire prevention device through the gas flow path; And it is provided on the gas flow path between the backfire prevention device and the on-off valve, the at least one of the pressure and flame by the gas explosion to prevent the propagation toward the on-off valve through the backfire prevention device through the backfire prevention device The above-described problem can be achieved by providing a flame and pressure propagation prevention and flammable gas blocking system by gas explosion, including an explosion-proof device equipped with a refractory insulation.

The explosion-proof device has an inner space formed therein, a receiving body having a first communication unit communicating the inner space with the gas flow path; A blocking unit provided in the interior space and selectively blocking the communication unit according to the internal pressure of the gas flow path; A second communication unit communicating the internal space with the outside; And a flame barrier layer provided on the second communication unit and including the fiber refractory insulating material to remove flame and relieve pressure to pass gas.

The flame barrier layer includes a plurality of first barrier layers each made of a metal plate having a plurality of openings; A plurality of second barrier layers disposed in parallel with the first barrier layer, each of a plurality of first wires and a mesh layer of a plurality of second wires crossing the first wire; And two layers of the plurality of first and second barrier layers located on both sides, and a third barrier layer made of the ceramic wool.

A sensor provided in the flashback preventing device and detecting whether the gas is exploded; And a control unit receiving a signal from the sensor and controlling the opening and closing operation of the opening/closing valve.

A control command is input, and a terminal for displaying the input control command is further included. The control unit may control the terminal such that the gas explosion and the opening/closing of the opening/closing valve are displayed through the terminal.

In addition, the present invention, in order to solve the above-mentioned problems, a backfire prevention device installed in the gas flow path to detonate (消焰) the flame backflow by gas explosion; An opening/closing valve that opens and closes the gas flow path and communicates with the backfire prevention device through the gas flow path; And an explosion pressure discharge and flame release device provided on a gas flow path communicating the backfire prevention device and the opening/closing valve, and preventing at least one of pressure and flame caused by the gas explosion from propagating toward the opening/closing valve. It provides flame and pressure propagation prevention and flammable gas blocking system by gas explosion.

The on-off valve can close the gas flow path only when the gas explodes.

A sensor provided in the flashback preventing device and detecting whether the gas is exploded; And a control unit receiving a signal from the sensor and controlling the opening and closing operation of the opening/closing valve.

A control command is input, and a terminal for displaying the input control command is further included. The control unit may control the terminal such that the gas explosion and the opening/closing of the opening/closing valve are displayed through the terminal.

The explosion-proof device has an inner space formed therein, a receiving body having a communication part communicating the inner space with the gas flow path; A blocking unit provided in the interior space and selectively blocking the communication unit according to the internal pressure of the gas flow path; A discharge unit communicating the inner space with the outside; And a flame barrier layer provided on the discharge unit and passing gas to remove flame and relieve pressure.

The flame barrier layer includes a first barrier layer having a plurality of openings; And a second barrier layer consisting of a plurality of first wires and a plurality of second wires traversing the first wire.

In the flame barrier layer, the first barrier layer and the second barrier layer may be alternately arranged to form a plurality of layers.

The plurality of openings may occupy an area corresponding to a part of the area of the first barrier layer.

In addition, the present invention, a space is formed inside, a housing in which an inlet for introducing gas at one end is formed, and an outlet for discharging gas at the other end is formed; It is provided between the inlet and the outlet, the flame-retardant element to prevent the passage of flame and to allow the passage of gas; A device housing in which the anti-inflammatory device is accommodated; And one side is connected to the housing and the other side is connected to the device housing; to solve the above problems by providing an explosion flame propagation device comprising a.

The anti-inflammatory device may include a plurality of micro-space portions extending along the traveling direction of the gas so as to extinguish the flame by endothermic.

The anti-inflammatory element includes a plurality of connecting portions arranged at a predetermined distance from the center of the anti-inflammatory element at radially outer sides; And a corrugated portion made of a metal material that is corrugatedly installed in a wavy shape between the connecting portions.

The housing includes a first housing in which the outlet is formed and a second housing spaced apart from the first housing, and a second housing in which the inlet is formed, and the anti-inflammatory housing is provided between the first housing and the second housing. Can.

The handle portion may include a wire that has one end coupled to the first housing or the second housing and the other end coupled to the anti-flame housing.

The first housing may be provided with a sensor for detecting a gas explosion.

As described above, the explosion pressure discharge and flame discharge prevention apparatus according to an embodiment of the present invention has the following effects.

First, according to an embodiment of the present invention, it can be manufactured with a simple structure and process, thereby providing an effect of improving productivity and reducing cost.

Second, according to an embodiment of the present invention, the gas discharge passage area is stably secured to maintain a sufficient depressurization performance, but provides an effect of effectively blocking flame eruption and cooling the discharge gas.

Third, according to an embodiment of the present invention, a fiber refractory insulating material is used in the gas discharge container to maintain the depressurization performance through gas discharge, but provides an effect to effectively block flame eruption and cool the discharge gas.

1 is a schematic diagram of a flame and pressure propagation prevention and flammable gas blocking system by gas explosion according to an embodiment of the present invention.
2 is a cross-sectional view showing a flame propagation prevention device shown in FIG. 1.
3 is a cross-sectional view showing an anti-flame element of the flame propagation prevention device.
FIG. 4 is a plan view illustrating an apparatus for preventing explosion pressure discharge and flame discharge of the embodiment illustrated in FIG. 1.
5 is a side cross-sectional view showing a plane cut along AA in FIG. 4.
FIG. 6 is a plan view showing the flame barrier layer shown in FIG. 5.
7 is an exploded perspective view illustrating a configuration of the flame barrier layer shown in FIG. 5.
FIG. 8 is a plan view illustrating another embodiment of the apparatus for preventing explosion pressure and flame discharge illustrated in FIG. 1.
9 is a side cross-sectional view showing a plane cut along AA in FIG. 8.
10 is a plan view showing another embodiment of the explosion pressure discharge and flame release prevention device shown in FIG.
11 is a side cross-sectional view showing a plane cut along AA of FIG. 10.

It will be appreciated that the embodiments described below are illustratively shown to help understanding of the invention, and that the invention can be practiced with various modifications, unlike the embodiments described herein. However, in the description of the present invention, when it is determined that detailed descriptions of related known functions or components may unnecessarily obscure the subject matter of the present invention, detailed descriptions and specific illustrations will be omitted. In addition, the accompanying drawings may not be drawn to scale in order to aid the understanding of the invention, but the dimensions of some components may be exaggerated.

The first and second terms used in the present application may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from other components.

In addition, the terms used in the present application are only used to describe specific embodiments, and are not intended to limit the scope of rights. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise," "consist of," or "consist of" are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, or It should be understood that it does not preclude the existence or addition possibilities of other features or numbers, steps, actions, components, parts or combinations thereof.

1 is a schematic diagram of a flame and pressure propagation prevention and flammable gas blocking system 1 by gas explosion according to an embodiment of the present invention. Referring to FIG. 1, a flame and pressure propagation prevention and flammable gas blocking system (hereinafter referred to as a system) by a gas explosion according to an embodiment of the present invention are flames that extinguish a flame refluxed by a gas explosion. At least one of the opening/closing valve 500 which opens and closes the radio wave prevention device 100 and the gas flow passage and communicates with the flame propagation prevention device 100 through the gas flow passage, and at least one of pressure and flame caused by gas explosion toward the opening/closing valve 500 It includes an explosion pressure discharge and flame release prevention device 300 to prevent propagation.

The flame propagation prevention device 100 may be referred to as an explosion backfire prevention device or an explosion flame propagation prevention device, and the explosion pressure discharge and flame discharge prevention device 300 may be an explosive relief valve or an explosion venting device. device) and may perform the same or similar functions to those.

Flame propagation prevention device 100, explosion pressure discharge and flame discharge prevention device 300 and the on-off valve 500 are all installed on the gas flow path, gas can be supplied through the gas flow path.

The gas flow path is connected to the gas supply unit, the first duct 10 for supplying gas to the on-off valve 500, the second duct 20 for communicating the on-off valve 500 with the flame propagation prevention device 100, and backfire It includes a third duct 30 that communicates with the prevention device 100 and a specific device that performs external or exhaust.

Here, the gas supply unit may be, for example, a gas tank that stores gas. The first duct 10 performs a function of moving the gas discharged from the gas supply unit to the on/off valve 500 side.

An explosion pressure discharge and flame discharge prevention device 300 may be installed at one side of the second duct 20. Explosive pressure discharge and flame discharge prevention device 300 is in communication with the interior of the second duct 20 through the opening formed on one side of the second duct 20, or the second duct 20 is in communication with the fourth It is installed at the end of the duct can be in communication with the interior of the second duct (20). Detailed description of the explosion pressure discharge and flame release prevention device 300 will be described later.

The third duct 30 may have one end connected to the flame propagation prevention device 100 and the other end exposed to the outside or connected to a ventilation device for ventilation. When a fire or explosion occurs around the other end of the third duct 30, the resulting flame is introduced into the flame propagation prevention device 100 along the internal flammable gas of the third duct 30.

Meanwhile, the system 1 includes a control unit 700 that receives a signal from a sensor 160, which will be described later, and controls the opening/closing operation of the opening/closing valve 500, and a terminal 900 that inputs a control command and displays the input control command. It may be further provided. Here, the on-off valve 500 may be, for example, a solenoid valve.

The control unit 700 may control the terminal 900 such that the gas explosion and the opening/closing of the opening/closing valve 500 are displayed through the terminal 900.

The flame propagation prevention device 100 will be described in detail with reference to FIG. 2. 2 is a cross-sectional view showing the flame propagation prevention device 100 shown in FIG. 1.

Referring to FIG. 2, the flame propagation prevention device 100 includes a housing 110 and an anti-flame part 150 accommodated inside the housing 110.

The housing 110 has a space formed therein to allow gas to flow, an inlet for introducing gas at one end, and an outlet for discharging gas at the other end. The housing 110 forms the outer space of the flame propagation prevention device 100 together with the flame-retardant housing 110, which will be described later.

The housing 110 may include a first housing 130 in which an outlet is formed and a second housing 120 in which the first housing 130 is spaced apart and the inlet is formed. In this case, the first housing 130 and the second housing 120 press the both ends of the anti-chlorination housing 110 toward the center of the anti-chlorination housing 110 so that the anti-inflammatory housing 110 and the first housing 130 2 to be installed between the housing 120.

The first housing 130 is provided with a first duct coupling flange 133 that is coupled to the third duct 30 at one end, and a first housing coupling flange 132 that is coupled to the second housing 120 at the other end. It is provided. The diameter of one end is smaller than the diameter of the other end.

The first duct coupling flange 133 is coupled to the third duct 30 by bolt and nut coupling, and the first housing coupling flange 132 is coupled to the housing coupling bolt 114 and the housing coupling nut 113. It is combined with the second housing coupling flange 122 to be described later.

The first housing 130 extends from one end toward the other end but extends from the first fluid flow part 134 and the first fluid flow part 134 to the other end having a cross-section with a constant diameter, and the diameter increases toward the extending direction. It includes a first body portion 131 having a gradually increasing cross-section.

The first housing 130 is formed to have a larger diameter of the first body part 131 than the diameter of the first fluid flow part 134 through which fluid and flame flow, thereby lowering the pressure raised by the flame. do. Accordingly, even when heat is applied locally or a chemical reaction occurs and heat is generated, heat transfer, that is, heat is easily lost to the outside, and the flame can be easily extinguished.

Meanwhile, an opening communicating the inside and the outside may be formed in the first body part 131, and a sensor 160 that detects whether or not a gas explosion occurs may be provided in the opening. The sensor 160 is connected to the control unit 700 and transmits a corresponding signal to the control unit 700 in case of gas explosion.

The second housing 120 is formed in a symmetrical shape with the first housing 130. The second housing 120 is provided with a second housing coupling flange 122 coupled to the first housing coupling flange 132 at one end, and a second duct coupling flange 123 coupled to the second duct 20 at the other end. ) Is provided. The diameter of one end is larger than the diameter of the other end. Also, the second housing 120 includes a second fluid flow portion 124 having a shape symmetrical to the first fluid flow portion 134 and a second body portion 121 having a shape symmetrical to the first body portion 131. Includes.

Meanwhile, an opening 112 may be formed in the second body part 121, and another sensor 160 for sensing pressure, heat, and the like may be provided in the opening 112. Another sensor 160 may also be connected to the control unit 700.

The second duct coupling flange 123 engages the second duct 20 with the bolt and nut, and the second housing coupling flange 122 engages the first housing coupling flange 132 with the bolt and nut coupling as described above. do. At this time, the second housing coupling flange 122 and the first housing coupling flange 132 maintain a spaced state with the anti-inflammatory portion 150 therebetween.

Hereinafter, the anti-inflammatory part 150 will be described in detail with reference to FIGS. 2 and 3. 3 is a cross-sectional view showing the anti-flame element 151 of the flame propagation prevention device 100. 2 and 3, the anti-flame unit 150 includes an anti-flame element 151 and a device housing 152 that accommodates the anti-flame element 151.

The element housing 152 is accommodated in the grooves formed on the inner surfaces of the second housing coupling flange 122 and the first housing coupling flange 132 at both ends. The device housing 152 includes a housing body 154, a first device support 155 and a second device support 153.

The housing body 154 has a space formed therein so that the anti-inflammatory element 151 is accommodated, and openings communicating the inside space with the outside are formed at both ends. The anti-flame element 151 may be installed in the internal space through any one of the openings at both ends.

Both ends of the housing body 154 are respectively accommodated and coupled to grooves formed on the inner surfaces of the second housing coupling flange 122 and the first housing coupling flange 132. On the other hand, between both ends of the housing body 154 and the grooves formed on the inner surfaces of the second housing coupling flange 122 and the first housing coupling flange 132, a leakage preventing member 157 such as a gasket that prevents leakage of fluid is provided. It may be installed.

The first element supporting portion 155 and the second element supporting portion 153 are coupled to both ends of the housing body 154, and the anti-inflammatory elements 151 received inside the housing body 154 are separated from the housing body 154. Do not.

The first element support portion 155 and the second element support portion 153 have a rim-arm structure as illustrated in FIG. 3, and a fluid passes between the arm 156 and the arm 156. It is a shape that can be done.

The anti-flame element 151 performs a function of anti-flame the flame that is reversed from the outlet of the housing 110, and is located between the first element support portion 155 and the second element support portion 153. In order to perform the anti-inflammatory function, the anti-inflammatory element 151 has a plurality of micro-space portions 151c extending in a direction in which the gas moves. To this end, as an example, the anti-inflammatory element 151 is a wrinkle formed in a wavy shape arranged between a plurality of support plate portions 151a and support plate portions 151a, which are layered at regular intervals from the center of the housing body 154. Includes a portion 151b. The valleys and floors of the corrugated portion 151b respectively contact the support plate portion 151a. Accordingly, the microcavity portion 151c is formed by the support plate portions 151a located at the upper and lower portions of the corrugation portion 151b and the corrugation portion 151b.

The support plate portion 151a is made of a metal material and may form a curved surface to surround the center of the housing body 154.

The wrinkle portion 151b may be made of, for example, a corrugate ribbon made of metal. The corrugated ribbon is installed to be corrugated in a wavy shape between the supporting plate portions 151a, and a thin metal plate passes through a cogwheel-shaped jig to make the corrugated height to be equal to or less than a safe gap. , It can be manufactured by winding several layers radially outward from the center while giving a constant tension together with the support plate portion 151a.

Since the anti-flame element 151 is formed with a number of micro-space portions 151c, it is reliably absorbing and cooling the flame to be backfired, so that the flame to be reversed passes through the anti-flame element 151 and is prevented from propagating to other areas. Can.

In addition, the anti-flame element 151 may be very excellent in impact resistance and pressure resistance when manufactured by processing a metal plate body. Therefore, the anti-flame element 151 is not easily damaged or damaged even when a high pressure flame is applied. In particular, flames of combustible gases with a high explosive rating can also be blocked by extinguishing.

Meanwhile, when replacing the anti-flame element 151, a handle portion 170 may be provided in the flame propagation prevention device 100 for user convenience. The handle portion 170 has one side connected to the housing 110 and the other side connected to the device housing 152. The handle portion 170 of the handle portion 170 may be made of a fastening bolt and a nut for fixing both ends of the wire 176 and the wire 176.

As shown in FIG. 2, the wire 176 is, for example, one end fastened to the second housing 120 and the other end fastened to the outer circumferential surface of the device housing 152. Here, one end of the wire 176 may be fastened to the first housing 130.

In addition, one end of the wire 176 is fastened to the second housing 120 by a fastening bolt 172, a pressure plate 173a such as a washer between the fastening bolt 172 and the wire 176 to increase the fastening force. Can be installed. The other end of the wire 176 is also fastened by a fastening bolt 174 and a fastening nut 175 coupled to the protruding portion 171 protruding from the outer circumferential surface of the device housing 152, between the fastening bolt 174 and the wire 176 Alternatively, a pressure plate 173b may be installed between the fastening nut 175 and the wire 176 to increase the fastening force such as a washer.

When the flame propagation prevention device 100 is installed, when the handle portion 170 is positioned above the flame propagation prevention device 100, the user can more easily replace the damaged anti-flame element 151.

For example, if the first housing 130 and the second housing 120 are separated in order to replace the anti-inflammatory device 151, the anti-flame unit supported by the first housing 130 and the second housing 120 ( 150) may fall down and be damaged. In order to prevent this, the self-weight of the anti-inflammatory part 150 must be supported. Since the weight of the anti-flame unit 150 is considerable, it is not easy for a user to support the self-weight of the anti-flame unit 150.

The handle unit 170 is intended to improve the inconvenience of the user. As illustrated in FIG. 2, when the user moves the third duct 30 slightly while the handle unit 170 is gripped, and then separates the anti-inflammatory unit 150 from the first housing 130, the handle unit ( Through 170), only a portion of the weight of the anti-inflammatory unit 150 is transmitted to the user.

This means that the second housing 120 is still coupled to the second duct 20, and due to friction between the second coupling flange and the housing body 154, a part of the self of the anti-flame part 150 is attached to the second housing 120. Because it is supported by. As the wire 176 of the handle portion 170 is pulled upward, the pushing force between the second coupling flange and the housing body 154 becomes stronger, and thus the frictional force between the second housing coupling flange 122 and the housing body 154 It also gets stronger. At this time, the wire 176 may be made of a flexible material.

Stronger friction means that the self-weight ratio of the anti-flame part 150 supported by the friction force is high and the ratio of the self-weight of the anti-flame part 150 supported by the user's force is low.

Hereinafter, the explosion pressure discharge and flame release prevention device 300 will be described in detail with reference to FIGS. 4 to 7. FIG. 4 is a plan view showing the explosion pressure discharge and flame release prevention device 300 of the embodiment shown in FIG. 1, FIG. 5 is a side cross-sectional view showing the cut along AA of FIG. 4, and FIG. 6 is FIG. 5 It is a plan view showing the flame barrier layer 360 shown in, Figure 7 is an exploded perspective view for explaining the configuration of the flame barrier layer 360 shown in FIG.

4 to 7, the explosion pressure discharge and flame discharge prevention device 300 has a space formed therein and the receiving body (310, 320, 330), the receiving body (310, 320) communicating with the duct and the outside, respectively , 330 and a blocking portion 340 that selectively blocks communication between the duct and a pressing portion 350 that presses the blocking portion 340 to move.

Receiving body (310, 320, 330) is a first plate 320 in contact with the duct, the first plate 320 facing the second plate 330 and the first plate 320 and the second plate facing each other It includes a connection portion 310 provided between (330).

The first plate 320 is formed with a first communication portion 321 communicating with the duct. The first communication unit 321 communicates the inner space of the receiving body (310, 320, 330) with the inner space of the duct. Here, the duct may be the second duct 20 or the fourth duct 21 connected to the second duct 20. Here, the first communication unit may be referred to as a discharge unit.

The first plate 320 maintains a state spaced apart from the second plate 330 by a separation pipe 335. The separation pipe 335 is coupled to the second plate 330 by a pipe nut 333. On the other hand, the body coupling bolt 331 is coupled to the duct through the first plate 320 and the second plate 330 to couple the receiving body (310, 320, 330) to the duct.

The second plate 330 together with the first plate 320 and the connecting portion 310 forms an inner space of the receiving body 310, 320, 330, and the pressing portion 350 is provided on the inner surface.

The connection part 310 forms the inner space of the receiving body 310, 320, 330 as the first plate 320 and the second plate 330 are connected. 4 and 5, the connecting portion 310 is formed in a cylindrical shape with both ends open. However, the present invention is not limited thereto, and may be formed in various shapes as long as the second communication unit 313 described later can be formed. The connection part 310 is provided with a second communication part 313 penetrating through the connection part 310 to communicate the inside space and the outside of the receiving body 310, 320, 330.

On the other hand, the second communication unit 313 is provided with a flame barrier layer 360 that can extinguish the flame but discharge the fluid. The detailed description of the flame barrier layer 360 will be described later. In the second communication part 313, the first flange 312 extending from the side of the first plate 320 and the second flange spaced from the first flange 312 to facilitate the installation of the flame barrier layer 360 ( 311) is provided. Therefore, the second communication part 313 may be defined as a space between the first flange 312 and the second flange 311 and a space by an opening passing through the connection part 310.

The blocking unit 340 opens and closes the first communication unit 321 while moving the inside of the receiving bodies 310, 320, and 330 up and down. Supporting the first blocking plate 343 and the second blocking plate 342 and the first blocking plate 343 and the second blocking plate 342 spaced apart from the first blocking plate 343 It includes a separation portion 341.

The first blocking plate 343 may be formed of two layers to withstand pressure, and functions to open and close the first communication unit 321.

The second blocking plate 342 is provided with a pressing portion 350 and may be made of one layer for reducing self-weight.

On the other hand, as the separation portion 341 is installed, most of the space between the first blocking plate 343 and the second blocking plate 342 is made of an empty space, so that the weight of the blocking portion 340 can be reduced, and the empty space It is possible to absorb the impact through the breakage of the blocking portion 340 can be prevented.

The pressing part 350 performs a function of providing an elastic force to the blocking part 340 so that the blocking part 340 can selectively open and close the first communication part 321. The pressing portion 350 is a spring 351 that applies an elastic force to the blocking portion 340, the upper spring guide 352 and the lower spring guide 355, the upper spring guide 352 or the lower portion for fixing the spring 351 It includes a stopper 354 provided in the spring guide 355.

The upper spring guide 352 is provided on the inner surface of the second plate 330, and a fixing bar penetrating the second plate 330 is formed. As the fixing nut 353 is coupled to the fixing bar, the upper spring guide 352 is coupled to the second plate 330. The lower spring guide 355 is coupled to the first plate 320 by a fixing bolt 356.

The stopper 354 may be made of a flexible material capable of absorbing shock, and when the blocking part 340 moves rapidly due to strong pressure, the shock between the upper spring guide 352 and the lower spring guide 355 is alleviated.

Hereinafter, the flame barrier layer 360 will be described in detail with reference to FIGS. 5 to 7. Referring to FIGS. 5 to 7, a flame barrier layer 360 is provided in the second communication part 313 to remove flame and pass gas to relieve pressure.

The flame barrier layer 360 is provided between the first flange 312 and the second flange 311 and is formed in a ring shape as shown in FIG. 6. In addition, the flame barrier layer 360 is a plurality of first barrier layer 361 and the first barrier layer 361, which are layered at regular intervals from the center of the receiving bodies 310, 320, and 330, as shown in FIG. ), and a second barrier layer 363 arranged between them.

In other words, the first barrier layer 361 and the second barrier layer 363 are arranged to intersect the moving direction of the gas discharged through the second communication unit 313. Therefore, through the second communication unit 313 The discharged gas passes through the first barrier layer 361 and the second barrier layer 363, but moves in each thickness direction and penetrates. The third barrier layer 370 described later also uses the second communication portion 313. It is arranged to intersect the moving direction of the gas discharged through.

In addition, the first barrier layer 361 and the second barrier layer 363 are provided in a rolling type around the explosion-proof device 300. That is, the first barrier layer 361 and the second barrier layer 363 are wound around the explosion-proof device 300.

The first barrier layer 361 is made of a thin metal plate in which a plurality of openings 363a are formed. The opening 363a may be, for example, 2 mm in diameter, and the distance between the centers of adjacent openings 363a may be 2.5 mm. The opening 363a occupies an area corresponding to a part of the area of the one-wall layer. Meanwhile, the first barrier layer 361 may have a constant thickness.

The second barrier layer 363 is composed of a plurality of first wires 363a and a plurality of second wires 363b crossing the first wires 363a. The plurality of first wires 363a are spaced apart from each other at regular intervals, and the plurality of second wires 363b are also spaced apart from each other at regular intervals. Therefore, the plurality of first wires 363a and the second wires 363b form a mesh structure. The thickness of the second barrier layer 363 is approximately 2 mm, and the separation distance between the first barrier layers 361 may be approximately 2 mm.

Accordingly, the cross-sectional area of the passage through which the gas is discharged can be secured evenly and stably, and the heat transfer of the first barrier layer 361 is caused by the second barrier layer 363 disposed between the first barrier layers 361. Since the area is increased and the flow resistance can be minimized, it is possible to perform the cooling action of the exhaust gas more effectively.

Hereinafter, the operation of the system 1 according to an embodiment of the present invention will be described in detail.

Gas discharged from a gas supply unit such as a gas tank is an arrow F1 through a first duct 10, an on-off valve 500, a second duct 20, a flame propagation prevention device 100, and a third duct 30. ) To the outside. The gas may be simply discharged for aeration, or may be discharged for other purposes, such as igniting and using a gas torch or a gas cutter tip.

When the gas discharged from the third duct 30 explodes due to an external fire or the like, the flame flows back in the direction of the arrow S1 along the third duct 30.

In this case, the combustion reaction may be deflagration or detonation, and both may generate flames. In the latter case, additional pressure is generated and moves in the direction of the arrow S1.

The pressure generated during the explosion may be partially reduced by the flame propagation prevention device 100, but a considerable portion is transmitted to the second duct 20.

The flame may be firstly extinguished while passing through the flame propagation prevention device 100. However, if the flame lasts for a certain period of time or the temperature of the flame is high, the flame propagation prevention device 100 may not completely extinguish the flame.

The flame can be reversed through the second duct 20, and when the pressure of the second duct 20 rises above a certain reference value, the blocking portion 340 of the flame propagation prevention device 100 causes the first communication portion 321 ). When the pressure is transmitted to the second duct 20, most of the blocking portion 340 opens the first communication portion 321.

When the first communication unit 321 is opened, the flame and pressure move along the arrow S2. The flame is second-quenched by the flame barrier layer 360, and a part of the gas is discharged to the outside, so that the pressure is significantly relieved.

On the other hand, when the sensor 160 detects a gas explosion and transmits the corresponding signal to the control unit 700, the control unit 700 controls the on/off valve 500 to be closed. When the on-off valve 500 is closed, most of the pressure does not move to the first duct 10.

Even if the on-off valve 500 is closed, the pressure of the second duct 20 does not rise above a certain level. This is because the flame propagation prevention device 100 makes the second duct 20 communicate with the outside. In particular, when the pressure is reversed, the pressure of the second duct 20 does not rise even though the on-off valve 500 is closed, thereby minimizing damage to parts.

In addition, the control unit 700 controls to display whether the gas explosion and the opening/closing valve 500 are opened through the terminal 900. In this case, the user may input a specific value through the terminal 900 so that the opening/closing valve 500 is determined according to the size of the gas explosion through the terminal 900, for example.

Hereinafter, another embodiment of the explosion prevention device 400 will be described in detail with reference to FIGS. 8 and 9.

FIG. 8 is a plan view showing another embodiment of the explosion-proof device 400 shown in FIG. 1, and FIG. 9 is a side cross-sectional view showing a plane cut along AA of FIG. 8. 9, the blocking portion 340 closing the first communication portion 321 is shown on the left side of the BB line, and the blocking portion 340 opening the first communication portion 321 is shown on the right side of the BB line. . Another embodiment of the present invention described below uses the same member number for the same structure as the above-described embodiment, and detailed description thereof will be omitted.

8 and 9, the explosion pressure discharge and flame discharge prevention device 400 according to another embodiment of the present invention is an embodiment of the present invention, the pressing portion 450 and the flame barrier layer 460 described above Different from the explosion pressure discharge and explosion pressure discharge and flame discharge prevention device 300 according to.

The pressing part 450 is a spring 451 that applies an elastic force to the blocking part 340, a spring guide 454 supporting the spring 451, and a guide stopper 456 that limits the upward movement of the blocking part 340. It includes.

The spring 451 is composed of a coil spring and is supported by a spring guide 454 located inside the spring 451. One end of the spring 451 elastically presses the second plate 330, and the other end located on the opposite side of the one end elastically presses the second blocking plate 342. The second blocking plate 342 is formed with a spring mounting portion 457 that is concavely formed so that the other end portion of the spring 451 is seated and coupled.

The spring guide 454 extends from the second plate 330 toward the second blocking plate 342 and is located inside the spring 451 to support the spring 451. The spring guide 454 is coupled to the second plate 330 by a bolt member 453 having one end penetrating the second plate 330.

The guide stopper 456 functions to alleviate the impact between the blocking portion 340 and the second plate 330 when the blocking portion 340 is rapidly moved toward the second plate 330 by strong pressure. The guide stopper 456 may be made of a flexible material capable of absorbing shock.

The guide stopper 456 is coupled to the other end of the spring guide 454. The other end of the spring guide 454 is located opposite to one end of the spring guide 454 coupled to the second plate 330.

On the other hand, the first plate 320 is provided with a sealing member 323 in contact with the circumference of the lower surface of the blocking portion 340. The sealing member 323 may be formed of a circular O-ring in cross section, is provided on the first plate 320 and is accommodated in a sealing receiving groove 323a having a triangular cross section.

The flame barrier layer 460 is a discharge portion, that is, the first flame barrier layer 360a located inside the second communication portion 313 and the second flame barrier layer located outside the second communication portion 313 ( 360b) and a third flame barrier layer 460 positioned between the first flame barrier layer 360a and the second flame barrier layer 360b. The first flame barrier layer 360a is composed of the first barrier layer 361 and the second barrier layer 363 described above, and the second flame barrier layer 360b also has a first barrier layer 361 and a second barrier. Layer 363. The order between the layers is only an example and is not limited thereto.

The third flame barrier layer 460 may include a fiber refractory insulating layer made of a fiber refractory insulating material. Fiber refractory insulation is made of various chemical components under high temperature and high pressure, and has excellent fire resistance and heat insulation. Ceramic wool and glass fibers are typical. In particular, as known in the art, ceramic wool is lighter than conventional refractory materials, has excellent flexibility, has a very low thermal conductivity at high temperatures, and has a very low density, so there is less heat accumulated.

When a fiber refractory insulating material such as ceramic wool is added to the flame barrier layer 460, the flame discharge prevention function is improved, and even a small amount can achieve an excellent flame discharge prevention function, thereby reducing cost.

Hereinafter, another embodiment of the explosion pressure discharge and flame release prevention device 600 will be described in detail with reference to FIGS. 10 and 11.

FIG. 10 is a plan view showing another embodiment of the explosion pressure discharge and flame release prevention device 300 shown in FIG. 1, and FIG. 11 is a side cross-sectional view showing a plane cut along AA of FIG. 10. 11, the blocking portion 640 closing the first communication portion 321 is shown on the left side of the BB line, and the blocking portion 640 opening the first communication portion 321 is shown on the right side of the BB line. . Another embodiment of the present invention described below uses the same member number for the same structure as the above-described embodiment, and detailed description thereof will be omitted.

10 and 11, the explosion pressure discharge and flame discharge prevention device 600 according to another embodiment of the present invention includes a receiving body, a pressing portion 650, a blocking portion 640 and a flame barrier layer 460 ) Is different from the impact prevention device according to an embodiment of the present invention described above. Here, since the flame barrier layer 460 is the same as the flame barrier layer 460 of the impact prevention device according to another embodiment of the present invention, a description thereof will be omitted.

The accommodation body includes a first plate 320 and a second plate 630 spaced apart from the first plate 320. A space in which the pressing portion 650 and the blocking portion 640 are accommodated is formed between the first plate 320 and the second plate 630.

The first communication unit 321 is provided on the first plate 320 to communicate the space formed between the first plate 320 and the second plate 630 and the external space. The second communication portion 313 is provided between the peripheral portion 320a of the first plate 320 and the peripheral portion 630a of the second plate 630, and between the first plate 320 and the second plate 630. It connects the space formed in and the external space.

The pressing part 650 supports the guide cap 650, the spring 654 and the spring guide 655 for guiding the movement of the spring 654, and the spring 654 for providing elastic pressing force to the blocking part 640. Includes.

The guide cap 650 closes the opening formed in the first plate 320 and functions to limit the movement of the spring guide 655. The guide cap 650 includes a cap body 651a and a coupling flange 651b formed at one end of the cap body 651a.

The cap body 651a has a cross-sectional area capable of closing the opening formed in the first plate 320, and provides a space for receiving the spring guide 655 therein.

The coupling flange 651b is formed in a ring shape extending circumferentially from one end of the cap body 651a, and performs a function of coupling the cap body 651a to the first plate 320. The coupling flange 651b is coupled to the first plate 320 by a bolt portion 653 penetrating the first plate 320 and the coupling flange 651b.

The spring guide 655 has one end coupled to the blocking portion 640, and the other end moves in the inner space of the cap body 651a according to the movement of the blocking portion 640. When the blocking portion 640 rapidly moves toward the first plate 320 by pressure, the spring guide 655 also moves together with the blocking portion 640.

In this case, the spring guide 655 limits the movement of the blocking portion 640 as the movement is restricted while colliding with one surface of the cap body 651a that traverses the movement path of the spring guide 655. Therefore, the spring guide 655 may be made of a flexible material to alleviate the impact.

The spring 654 may be made of a bellows spring 654, and a space extending in the longitudinal direction is formed therein. The spring 654 is supported by a spring guide 655 accommodated in the interior space, and movement is guided.

On the other hand, if the blocking portion 640 is rapidly moved toward the first plate 320 by pressure, the spring 654 is compressed quickly and the impact from the blocking portion 640 can be transmitted to the first plate 320. have. A spring 654 pad may be provided between the spring 654 and the first plate 320 to alleviate the impact caused by the blocking portion 640 transmitted to the first plate 320. Therefore, the spring 654 pad may be made of a flexible material.

As described above, although the present invention has been described by a limited embodiment and drawings, the present invention is not limited by this, and the technical spirit of the present invention and the following will be described by those skilled in the art to which the present invention pertains. Of course, various modifications and variations can be made within the scope of the equivalent claims.

1: Flame and pressure propagation and flammable gas blocking system by gas explosion
100: flame propagation prevention device 110: housing
150: anti-flame part 160: sensor
170: handle
300, 400, 600: Explosive pressure release and flame release prevention device
310: connecting portion 320: the first plate
330: second plate 340, 640: block
350, 450, 650: pressing part 360: flame barrier layer
370: fiber-resistant insulating layer

Claims (8)

delete delete delete delete delete A flame propagation prevention device installed in a gas flow path to decontaminate the flame flowing back by gas explosion;
An opening/closing valve that opens and closes the gas flow path and communicates with the flame propagation prevention device through the gas flow path; And
It is provided on the gas flow path between the flame propagation prevention device and the opening/closing valve, and prevents at least one of pressure and flame caused by the gas explosion from propagating toward the opening/closing valve through the flame propagation prevention device along the gas flow path. Explosive pressure discharge and flame release prevention device equipped with a fiber refractory insulation; flame and pressure propagation prevention and flammable gas blocking system by gas explosion, including. The method of claim 6,
The explosion pressure discharge and flame release prevention device is
An inner space is formed inside, the receiving body is provided with a first communication unit for communicating the inner space with the gas flow path;
A blocking unit provided in the interior space and selectively blocking the communication unit according to the internal pressure of the gas flow path;
A second communication unit communicating the internal space with the outside; And
It is provided in the second communication unit, flame and pressure to prevent flame and pressure propagation by gas explosion, characterized in that it comprises; flame barrier layer comprising the fiber refractory insulating material to remove the flame and relieve the pressure to pass the gas; Flammable gas blocking system. The method of claim 7,
The flame barrier layer
A plurality of first barrier layers each made of a metal plate having a plurality of openings;
A plurality of second barrier layers disposed in parallel with the first barrier layer, each of a plurality of first wires and a mesh layer of a plurality of second wires traversing the first wire; And
Flame and pressure propagation prevention by gas explosion, characterized in that it comprises; two of the plurality of the first barrier layer and the second barrier layer are located on both sides, a third barrier layer made of the fiber refractory insulation material; And flammable gas blocking system.

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