KR102152762B1 - Large-capacity Brown Gas Production System with Improved backfire prevention and self-generating functions - Google Patents

Abstract

The present invention relates to a large-capacity brown gas generation system with improved backfire prevention and self-generation functions, and more specifically, to compensate for the uneven power generation of a self-powered device using natural energy, and to stabilize the power supplied to the brown gas generator. In order to increase the overall energy efficiency of the brown gas generation system, and to provide an energy storage system (ESS), an auxiliary generator and a flame source that self-generates by compensating the driving force of the rotating shaft in the brown gas backfire prevention device are installed inside. It relates to a large-capacity brown gas generation system with improved backfire prevention and self-powered functions, including a burner that forms and prevents backfire of brown gas.

Description

Large-capacity Brown Gas Production System with Improved backfire prevention and self-generating functions}

The present invention relates to a brown gas generation system, and more particularly, to a large-capacity brown gas generation system with improved backfire prevention and self-generation functions.

Currently, gas combustion facilities using gases such as LPG, LNG, acetylene, or brown gas as a combustion source are installed and operated in various industrial fields.In particular, brown gas is a gas obtained by electrolysis of water, and when water is electrolyzed, Hydrogen is generated at the cathode and oxygen is generated at the anode. At this time, the generated hydrogen and oxygen gases are collected without separating collection, so that the content ratio of hydrogen and oxygen is 2:1.

In order to equip a system for producing and operating such brown gas in large quantities, an electrolytic cell that can generate large-capacity brown gas must be provided first, and a stable supply of power consumed during electrolysis to generate brown gas is required. It is essential. Accordingly, the applicant of the present invention is equipped with a self-powered device using natural energy in Korean Patent Registration No. 10-1749546 (a large-capacity brown gas generation system with automatic power generation and automatic backfire prevention function, 2017.06.15.) It has applied for a large-capacity brown gas generation system that can supplement the consumed power.

However, in order to generate brown gas with a large capacity, a large amount of power must be continuously supplied, and the conventional brown gas generation system using a self-powered device using natural energy is not uniform in power generation according to the natural environment, and is consumed for large-capacity brown gas generation. There is a limitation in that energy efficiency for power supply is deteriorated, and accordingly, operation costs are high.

In addition, in order to use the produced brown gas, the generated brown gas is transferred to a burner that ejects brown gas to a melting furnace, boiler, incinerator, cutting machine, etc., but the combustion speed of the brown gas is 200m/s ~ 3,600m/ Since it reaches s, the flame propagation speed is 11 times faster than that of general welding gas such as LPG fuel or acetylene. Therefore, when the supply of Brown gas is reduced to a low pressure, a reverse flow of the flame occurs, and such a reverse flow of the flame generates an intense blast inside the transfer line, causing safety accidents such as equipment damage and explosion.

Accordingly, the applicant of the present invention is installed on the conveying line of the brown gas through Korean Laid-Open Patent Publication No. 10-2017-0050964 (automatic backfire prevention device for gas combustion facilities, 2017.05.11.) to form a spiral-shaped wing outside. Backfire was prevented by driving a motor connected to the rotating shaft and blowing brown gas transferred by the rotation of the shaft before rotation. However, there is a problem that the overall energy efficiency of the brown gas generation system is deteriorated due to the power consumed by the motor that is driven to prevent backfire of the brown gas. In addition, in the conventional brown gas burner, the gas outlet is directly exposed to the outside. And, when a flame is formed outside, foreign substances such as flying substances and molten substances block the gas outlet or penetrate inside to block the supply of brown gas, or the flame goes back to the inside of the burner, causing an accident such as explosion or fire, Foreign matter interferes with the flame source, causing the flame to extinguish, thereby reducing the duration of the burner.

Korean Patent Registration No. 10-1749546 (large-capacity brown gas generation system with self-generation and automatic backfire prevention function, 2017.06.15.) Korean Laid-Open Patent Publication No. 10-2017-0050964 (Automatic backfire prevention device for gas combustion facilities, 2017.05.11.)

The present invention was conceived to solve the above problems, supplementing the uneven power generation amount of the self-powered device using natural energy, and having an energy storage system (ESS) for stabilizing the power supplied to the brown gas generator. , In order to increase the overall energy efficiency of the brown gas generating system, a burner that prevents backfire of brown gas by forming an auxiliary generator and a flame source that self-generates by compensating the driving force of the rotating shaft in the brown gas backfire prevention device. It provides a brown gas generation system having.

In order to solve the above problems, the present invention is a self-powered device that performs self-power generation using natural energy including solar and wind power; An energy storage system for storing power generated by the self-powered device; A brown gas generator for generating brown gas by receiving the stored power from the energy storage system; And an automatic backfire preventer installed on a gas transfer line through which brown gas is discharged from the brown gas generator to prevent backfire of the brown gas; including, wherein the automatic backfire preventer is operated by receiving power from the energy storage system. The driving motor, a rotation shaft connected to the rotation shaft of the driving motor, and a rotation shaft configured to prevent backfire by blowing brown gas introduced from the gas transfer line by a helical wing formed on an outer circumferential surface of one side in the longitudinal direction, and the rotation shaft. It includes an auxiliary generator that performs power generation by receiving the rotational force of the drive motor according to rotation and stores the generated power in the energy storage system, wherein the drive motor has a rotation shaft protruding from both sides in the longitudinal direction, and the drive shaft on one side It is connected to the rotating shaft, and the power generation shaft of the other side is connected to the generator to rotate with each other, and the auxiliary generator performs power generation by using the rotational force of the driving motor according to the braking of the rotating shaft, and the automatic The backfire arrester is installed at a connection portion between the driving motor and the generator to change a load applied to the driving motor according to the auxiliary generator, and the transmission to adjust the load according to the transmission according to the operation of the driving motor. And it characterized in that it further comprises a control unit for controlling the operation of the drive motor.
Here, the automatic backfire preventer further includes a pressure gauge for measuring a blowout pressure at which the brown gas introduced from the gas transfer line is discharged to the outside, wherein the control unit is configured to maintain a constant blowing pressure of the brown gas measured by the pressure gauge. It characterized in that it controls the output of the drive motor.
In this case, the automatic backfire prevention device further comprises a backfire prevention pipe having a hollow shape inside to accommodate the rotation shaft, and having the gas transfer line and a gas discharge line discharged along the rotation shaft, wherein the The rotating shaft further comprises a rotating sleeve formed in a tubular shape with a hollow inside at one end in the longitudinal direction, wherein the outer diameter of the rotating sleeve is formed to have the same diameter as the inner diameter of the backfire prevention tube. do.
In addition, the brown gas generation system further includes a brown gas burner connected to the automatic flashback arrestor and a gas discharge line to burn brown gas to form a flame, and the burner is formed as a tube having a hollow inside, The brown gas is connected to an inlet pipe through which the brown gas is introduced and accommodates the gas flow path and the gas flow path including a gas outlet formed to discharge the introduced brown gas on the other side in the longitudinal direction, and the brown gas A portion of the gas flow path is exposed at a front end portion in the discharge direction of the gas flow path, and a housing formed to surround the exposed outer surface of the gas flow path so that the front end portion is sealed. It characterized in that the front end portion in the moving direction has a backfire prevention structure formed so that a point at which the brown gas discharged from the gas outlet of the gas flow path is ignited to generate a spark is located inside the front end portion.

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In this case, the backfire prevention structure is characterized in that the front end portion of the housing is formed to protrude a predetermined length (L) from the gas outlet of the gas flow path in a front direction in the discharge direction of the brown gas.

In addition, the backfire prevention structure is characterized in that the inner diameter (D) of the inner circumferential surface at the front end of the housing is formed to gradually increase toward the front.

In addition, the backfire prevention structure is characterized in that the inner diameter (D) of the inner circumferential surface at the front end of the housing is 1.5 to 1.7 times larger than the length L of the front end of the housing spaced forward from the gas outlet.

In addition, the brown gas burner further includes a backfire prevention cap inserted into the front end of the housing and formed to have the backfire prevention structure, wherein the backfire prevention cap may be made of a heat-resistant material.

The present invention according to the above configuration has the advantage of improving the brown gas generation efficiency by supplying stable power to the brown gas generating device through an energy storage system that stores power generated from a self-powered device using natural energy.

In addition, the present invention is the total energy efficiency of the brown gas generating system by generating residual power as electric power and supplying it to the energy storage system through an auxiliary generator that generates electricity by using the rotational force of the rotating shaft of an automatic flashback preventer that prevents backfire of brown gas. There is an effect of increasing jung.

In addition, the present invention provides a burner having a structure capable of self-preventing backfire caused by foreign substances, thereby improving safety due to backfire of brown gas.

1 is a schematic diagram showing a brown gas generation system according to an embodiment of the present invention.
Figure 2 is a schematic diagram showing a brown gas generating device according to an embodiment of the present invention.
Figure 3 is a perspective view showing an electrolytic cell of the brown gas generator according to an embodiment of the present invention.
Figure 4 is a perspective view showing an automatic flashback preventer according to an embodiment of the present invention.
5 is a block diagram showing an automatic flashback preventer according to an embodiment of the present invention.
Figure 6 is a cross-sectional view showing a backfire prevention part of the automatic flashback preventer according to an embodiment of the present invention.
7 is a perspective view of a rotating shaft according to an embodiment of the present invention.
8 is a configuration diagram for explaining a brown gas generation system according to an embodiment of the present invention.
9 is a flow chart showing the operation of the automatic flashback preventer according to an embodiment of the present invention.
10 is a cross-sectional view showing a brown gas burner according to an embodiment of the present invention.
11 is a view showing a cooling connector of the brown gas burner according to an embodiment of the present invention.
12 is a partially enlarged view showing the front end of FIG. 10.
13 is a cross-sectional view showing a brown gas burner according to another embodiment of the present invention.
14 is a cross-sectional view showing a backfire prevention cap according to FIG. 12.
15 is an exemplary view showing the operation of the brown gas burner according to an embodiment of the present invention.

In the present invention, various modifications may be made and various embodiments may be provided, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. Should be.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings.

The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

1 is a schematic diagram showing a brown gas generating system according to an embodiment of the present invention. Referring to FIG. 1, a large-capacity brown gas generating system 1000 of the present invention includes a self-powered device 100, an energy storage system 200. ), a brown gas generator 300 and an automatic flashback preventer 400, a brown gas burner 500, and a gas separation tank 600 for separating and storing hydrogen gas and oxygen gas constituting the brown gas. I can.

The self-powered device 100 is a configuration for storing power in the energy storage system 200 by performing self-generation by using natural energy including solar light and wind power, and includes a solar panel to generate sunlight. A photovoltaic device 110 for generating electric power by being applied and an impeller for rotation using wind power may include a wind power generator 120 for generating power as a driving force rotating according to the wind power. The solar power generation device 110 and the wind power generation device 120 may be modified in various shapes and structures.

At this time, as the self-powered device 200 performs self-power generation by using natural energy such as wind power and solar power, there is a limit that it cannot maintain a constant amount of power generation. Accordingly, the brown gas generating system 1000 of the present invention includes the energy storage system 200 to store power generated from the self-powered device 200, and when the brown gas generating device 300 is operated By supplying power to the self-powered device 200 can overcome the limitations.

The energy storage system 200 is a system for storing power produced from the self-powered device 200 and selectively using it at a necessary time, and provides high-quality energy sources with high output fluctuations depending on external environments such as solar and wind power It may include a substation for converting the power of the electric power to and a storage unit for storing the applied power, and the ratio of power generation from the self-powered device 200 among the amount of power supplied to the brown gas generator 300 is fixed. It is preferable to perform a stable supply of power applied to the self-powered device 200 by adjusting so as not to exceed the value.

2 is a schematic diagram showing a brown gas generating apparatus according to an embodiment of the present invention, and referring to FIG. 2, the brown gas generating apparatus 300 receives power from the energy storage system 200 and The electrolyzer 310 that produces brown gas by electrolysis of the electrolyte contained in the electrolyzer 310, a water tank 320 in which water supplied to the electrolyzer 310 is stored, and the brown gas generated from the electrolyzer 310 are supplied to the electrolyzer 310 The washing tank 330 for washing the electrolyte mixed with the brown gas generated in 310 and the cooling device 350 for cooling the electrolyte supplied from the water tank 320 and the electrolyte supplied to the electrolyzer 100 or It may be configured to include a heat exchanger 340 for maintaining the electrolyte discharged from the electrolyzer 100 at a constant temperature. At this time, the electrolyte may be made of a mixed solution in which an electrolyte is mixed so that an electric current flows through water that is electrolyzed in the electrolyzer 100 to generate hydrogen and oxygen. In this case, the electrolyte does not react during electrolysis and only mixed water It is preferably made of a material that can be decomposed to produce hydrogen gas and oxygen gas. At this time, it is preferable that the heat exchanger 340 keeps the electrolyte solution supplied to the electrolytic cell 100 at a constant temperature of 60 to 70 degrees Celsius.

The electrolyzer 310 includes an electrode plate 311 and an electrode 312 connected to each other to flow different currents by receiving power from the energy storage system 200, and the electrode plate 311 and the electrode 312 ) The electrolytic solution accommodated in the electrolyzer 310 is electrolyzed by the current applied to the electrolyzer 310, and at this time, brown gas in which hydrogen gas and oxygen gas are mixed is generated. In addition, the electrolytic cell 310 may include a sludge discharge unit 313 for discharging the electrolyte mixed with the electrolytic solution and a sludge tank 314 for storing the discharged electrolyte.

In addition, the electrolyzer 310 is disposed in a pair, and the electrolyte is supplied to the inside of the electrolyzer 310 by a water supply header H1 installed at an upper portion between the pair of electrolyzers 310, The electrolyte is drained by the drain header (H2) installed in the wall. At this time, a water supply line (L1) is connected between the water supply header (H1) and the heat exchanger 340, and a drain line (L2) is connected between the drainage header (H2) and the heat exchanger 340, , In the water supply line (L1) and the drain line (L2), a metering pump is installed to adjust the flow rate of the electrolyte supplied or drained from the electrolyzer 310, and the water supply line (L1) is in the water supply header (H1). It is branched and connected to the upper part of each electrolyzer 100, and the drain line L2 may be branched from the drain header H2 to be connected to the lower part of each electrolyzer 100.

The water tank 320 stores water therein, and is connected to the heat exchanger 340 through a cooling water line L3 to supply cooling water to the heat exchanger 340. At this time, the cooling water line L3 The cooling device 350 is installed to cool the water supplied from the water tank 320, and the cooled cooling water is used for heat exchange of the heat exchanger 340. In addition, the water tank 320 is connected to a water supply line (L4) supplying the water used for brown gas washing to the washing tank 330 by a metering pump, and the water supply line (L4) is the washing tank An electrolyte line (L5) for supplying an electrolyte to the electrolyzer 310 is connected through 330 to supply water to the electrolyte mixed in the washing tank 330 through the water supply header (H1) of the electrolyzer 310. I can.

The washing tank 330 separates the brown gas and the electrolyte, but the brown gas generated in the electrolyzer 310 is collected and washed in the gas inlet line L6 flowing in with the electrolyte, and the washing tank 330 A gas transfer line L7 through which the brown gas from which the electrolyte is separated is transferred is connected. At this time, when the washing tank 330 has a water level sensor and detects a shortage of water stored in the tank, it operates a metering pump installed in the water supply line L4 to receive water from the water tank 320.

In addition, the washing tank 320 stores an electrolyte solution diluted by washing of brown gas, and an electrolyte line that supplies the electrolyte stored in the washing tank 320 to the electrolyzer 100 to supplement the electrolyte. (L5) is provided, and the electrolyte line (L5) may be connected to the water supply line (L1) to be connected to the inside of the electrolyzer (100) through the water supply header (H1).

3 is a perspective view showing a large-capacity electrolyzer of a brown gas generator according to an embodiment of the present invention and a conventionally used small-capacity electrolyzer, and FIG. 3(a) shows an electrolyzer according to an embodiment of the present invention. And, Figure 3 (b) shows a small-capacity electrolyzer of the conventional brown gas generator used. At this time, if the size of the electrolyzer is arbitrarily increased in order to generate large-capacity brown gas, the risk of backfire of the brown gas increases, and as shown in Fig. 3(b), conventionally, large-capacity brown gas is generated. In order to do so, there is a limit to installing a large amount of small-capacity electrolyzer. However, the brown gas generating device of the present invention, as shown in Figure 3 (a), through the safety valve 420 installed on the top of the electrolyzer 310, the brown gas generated inside the electrolyzer 310 is discharged. When the pressure at the top exceeds a certain value, the gas is discharged to the outside, so that even if a backfire occurs in the line through which the brown gas is discharged, safety for the inner width of the electrolyzer 310 may be ensured. At this time, the safety valve 420 is a configuration that forms a part of the automatic flashback preventer 400 of the present invention, and will be described in more detail below with reference to the drawings.

FIG. 4 is a perspective view showing an automatic flashback preventer 400 according to an embodiment of the present invention, and FIG. 5 is a configuration diagram showing an automatic flashback preventer 400 according to an embodiment of the present invention. And Referring to Figure 5, the automatic backfire preventer 400 is installed in the gas transfer line (L7) from which the brown gas is discharged from the brown gas generating device 300 to prevent the backfire of the brown gas, the The drive motor 430 operated by receiving power from the energy storage system 200 and the spiral blade 411a formed on the outer peripheral surface of one side in the longitudinal direction connected to the rotation shaft 431 of the drive motor 430 The backfire prevention part 410 including a rotation shaft 411 that prevents backfire by blowing brown gas introduced from the gas transfer line L7, and the drive motor 430 according to the rotation of the rotation shaft 411 It may be configured to include an auxiliary generator 450 that performs power generation by receiving the rotational force of and stores the generated power in the energy storage system 200.

At this time, the driving motor 430 may be connected to the rotation shaft 431 and the rotation shaft 411 through a connecting member 416, wherein the connecting member 416 is the driving motor 430 such as a belt or a chain. ) Of the rotation shaft 431 and the rotation of the rotation shaft 411 may be connected in parallel by any means, preferably, the drive motor 430 has the rotation shaft 431 protruding to both sides in the longitudinal direction Is formed, one side of the drive shaft (431a) is connected to the rotation shaft 411 of the automatic backfire prevention unit 410, the other side of the power generation shaft (431b) is connected to the auxiliary generator (450) so that they rotate in parallel with each other. As a result, the driving motor 430 and the rotation shaft 411 form a concentric shaft, so that loss of power generated when the driving motor 430 and the rotation shaft 411 rotate can be minimized. At this time, the drive motor 430 and the auxiliary generator 450 are according to an example for performing an object to be solved without departing from the technical gist of an embodiment of the present invention, and the drive motor 430 Depending on the operation, it can be modified to perform the role of the drive motor and the alternator at the same time.

The brown gas generation system 1000 of the present invention according to the above configuration more efficiently uses the consumption of power consumed to rotate the rotation shaft 411 of the flashback arrestor 400, and the rotation shaft ( When the driving motor 430 that rotates 411 is stopped, the kinetic energy of the rotating shaft 411 remaining when the operation of the driving motor 430 is stopped may be generated as electric energy. That is, the auxiliary generator 450 may perform power generation braking generated by using the rotational force of the driving motor 430 according to the braking of the rotation shaft 411 of the automatic flashback arrestor 400. this?? The braking of the rotation shaft 411 refers to a drive in which the driving motor 430 is stopped and decelerates and rotates by the rotational force remaining in the rotation shaft 411, and at this time, the driving motor 430 has power Without being supplied, power is generated by using the rotational force of the rotating shaft 411 and the generated power is stored in the energy storage system 200.

In addition, the automatic backfire preventer 400 is installed between the gas transfer line L7 and the gas discharge line L8, and the backfire prevention unit through the gas discharge line L8 connected to the backfire prevention unit 410. The brown gas blown by the rotating shaft 411 of 410 is discharged to the brown gas burner 500.

At this time, when the gas discharge line L8 is connected to the brown gas burner 500 on one side and the other side is connected to the burner 500, when the pressure inside the gas discharge line L8 increases by more than a threshold. It is connected to the safety valve 420 for generating internal gas and flame to the outside, and in this case, the backfire prevention part 410 may be connected to the gas discharge line L8 through a bypass circuit 440.

The bypass circuit 440 is configured to prevent the backfire generated from the brown gas burner 500 from being directly connected to the deterioration prevention unit 410, and by inducing the flow of the backfired flame to bypass through the bypass circuit 440 , In the case of brown gas having a fast flame propagation speed, the backfire prevention unit 410 is induced to be discharged to the outside through the safety valve 420 directly connected to the brown gas burner 500, not the backfire prevention unit 410. ) It can prevent backfire of flame inside. At this time, the safety valve 420 is connected to a gas discharge line L8 directly connected to the brown gas burner 500, and when a backfire occurs in the brown gas burner 500, the gas discharge line L8 accordingly It detects the internal pressure, operates to discharge the internal gas and flame to the outside when the internal pressure of the gas discharge line (L8) increases more than the threshold, and when the internal pressure of the gas discharge line (L8) is lower than the threshold The brown gas burner 500 and the backfire prevention part 410 are connected, but when the internal pressure of the gas discharge line L8 is higher than the grain threshold, it is opened to be connected to the outside to discharge internal gas or flame to the outside. To prevent backfire of the brown gas.

At this time, the automatic flashback preventing unit 400 may further include a control unit 460 for adjusting and controlling the amount of air blown by the flashback preventing unit 410, and the control unit 460 is The rotation speed of the driving motor 430 and power applied to the driving motor 430 are controlled to adjust the rotation amount of the rotation shaft 411.

6 is a cross-sectional view showing a backfire prevention part of an automatic flashback preventer according to an embodiment of the present invention, and FIG. 7 is a perspective view of a rotating shaft according to an embodiment of the present invention. Referring to FIGS. 6 and 7, the The backfire prevention part 410 is provided in the inside of the backfire prevention pipe 412 and the flashback prevention pipe 412 formed in a box-shaped or cylindrical shape connected to the gas transfer line L7 and the gas discharge line L8, and one side It is connected to the rotation shaft of the driving motor 430 and rotates, and includes a rotation shaft 411 having a spiral wing 411a formed on the other side. At this time, the conventional backfire prevention unit 410 contacts the outer circumferential surface of the blade 411a formed on the other side of the rotation shaft 411 and prevents the brown gas discharged to the bypass 430 through the rotation shaft 411 from backfire. A sealing tube made of Teflon material to seal the inside is combined, but as the rotation shaft 411 is operated for a long time, the outer circumferential surface of the sealing tube is worn, so that gas or flame flowing back along the outer circumferential surface of the worn sealing tube is brought into There was an inflow problem. In this way, in order to prevent the problem of deteriorating durability due to wear of the Teflon material to metal, the rotation shaft 411 of the present invention is partially formed at the end of the blade 411a along the other side in the longitudinal direction on the outer circumferential surface. By further comprising a rotating sleeve (411b) formed in a cylindrical shape with a hollow inside so as to surround the (411a), by replacing the sealing tube made of Teflon material, the problem of decrease in durability due to the wear of the sealing tube made of Teflon material Resolved.

At this time, the outer diameter of the rotation sleeve (411b) is formed to have the same diameter as the inner diameter of the backfire prevention pipe 412, the backfire prevention pipe 412 corresponds to the rotation sleeve (411b) of the rotation shaft 411 A bearing 414 provided to surround the outer circumferential surface of the rotating sleeve 411b and a sealing member 415 provided on the outer surface of the bearing 414 to seal the lubricant inside the bearing 414 are formed The backfire is prevented by sealing the gap in which the backfire flows into the interior, and the blades 411a of the rotation shaft 411 do not contact other parts inside the backfire prevention part 410, and at the same time, the rotation shaft ( By surrounding the outer circumferential surface of the rotating sleeve 411b of the 411, vibration caused by the rotation of the rotating shaft 411 may be prevented.

In addition, the backfire prevention part 410 is the backfire prevention pipe so that the refrigerant for cooling heat due to the rotation of the rotation shaft 411 and the backfire of the brown gas flows along the outer circumferential surface of the backfire prevention pipe 412. Consisting of including a cooling housing 413 configured to surround the outer circumferential surface of 412, the cooling housing 413 is a cooling water passage 413b through which refrigerant flows in and discharges at both sides in the longitudinal direction, and the backfire prevention pipe ( 412) A rotating sleeve 411b of the rotating shaft 411 by high-speed rotation of the rotating shaft 411 in the backfire prevention part 410, including a cooling water flow pipe 413a formed to flow a refrigerant on the outer circumferential surface It is preferable to cool the heat generated by friction between the bearing 414 and the sealing member 415 to maintain the inside of the backfire prevention part 410 at a constant temperature. At this time, the refrigerant may be made of various materials including air or cooling water, and is preferably connected to the cooling device 350 of the brown gas generating device 300 to supply cooling water introduced from the water tank 320 I can receive it.

8 is a configuration diagram for explaining the power flow of the brown gas generation system according to an embodiment of the present invention, Figure 9 is a flow chart showing the operation of the automatic flashback arrestor according to an embodiment of the present invention, 8 and 9 will be described in more detail with respect to power generation and operation in the large-capacity brown gas generation system 1000 of the present invention according to the drive motor 430 and the auxiliary generator 450.

The brown gas generating system 1000 stores the power generated by the self-powered device 100 in the energy storage system 200 and supplies it to the electrolyzer 310 and the automatic flashback preventer 400 of the brown gas generating device 300. . At this time, a lot of power is consumed in order to generate large-capacity brown gas in the electrolyzer 310, and constant power must be stably supplied for stable production of brown gas in the electrolyzer 310, so the energy storage system 200 There is a limitation that the brown gas generator 300 must be operated in consideration of the power consumed compared to the stored energy. Accordingly, the present invention uses the remaining kinetic energy in the rotating shaft 411 of the automatic flashback arrestor 400 operated by receiving power from the energy storage system 200 to convert the generated power to the energy storage system 200. By storing it in, the overall power consumption of the brown gas generating system 1000 can be reduced and it can be operated for a longer period of time.

At this time, the automatic flashback arrestor 400 is installed at the connection part between the driving motor 430 and the auxiliary generator 450 to vary the load applied to the driving motor 430 according to the auxiliary generator 450 (470) and a control unit 460 for controlling the operation of the transmission 470 and the drive motor 430 to adjust the load according to the auxiliary generator 450 according to the operation of the driving motor 430 When the drive motor 430 is operated, the transmission 470 maintains a neutral state so that the drive motor 430 and the auxiliary generator 450 are not connected, and the drive motor 430 When the operation is stopped, the driving motor 430 and the auxiliary generator 450 are connected to perform power generation using the rotational force according to the braking of the rotation shaft 411 connected to the rotation shaft of the driving motor 430. It works.

At this time, the driving motor 430 must be operated to maintain a constant pressure discharged to the brown gas burner 500 through the automatic flashback arrestor 400, and the brown gas to the brown gas burner 500 It is preferable that it is driven to adjust the amount of air blown by the rotary shaft 411 in consideration of the pipe friction loss according to the length, diameter, and inner roughness of the gas discharge line L8 to be transferred, and the automatic backfire preventer 400 Is provided in the gas transfer line (L7) or the gas discharge line (L8), respectively, the inlet pressure (P1) of brown gas introduced from the gas transfer line or the brown gas introduced from the gas transfer line is discharged to the outside. Further comprising a pressure gauge 480 for measuring the pressure (P2), the control unit 460 is the output of the drive motor 430 so that the ejection pressure (P2) of the brown gas measured by the pressure gauge 480 is constant. Can be controlled.

In addition, as shown in FIG. 9, when the control method of the driving motor 430 according to the ejection pressure P2 of the brown gas will be described in detail, the driving motor 430 as the brown gas generating device 300 is operated. When the motor operation step (S100) in which the operation is operated and the motor control step (S200) of controlling the driving motor 430 so that the ejection pressure (P2) of the brown gas is kept constant, and the driving motor 430 are stopped And a power generation braking step (S300) of storing the power generated by the auxiliary generator 450 in the energy storage system 200 by using the remaining rotational force of the rotating shaft 411, and at this time, the motor control step ( S200) when the ejection pressure (P2) is less than the critical pressure (b) set to discharge at a constant pressure from the brown gas burner 500 in consideration of the pipe friction loss in the gas discharge line (L8), the drive motor ( 430) is accelerated to increase the amount of air blown from the rotating shaft 411 (S210 ??S211), and when the ejection pressure P2 is higher than the critical pressure b, the driving motor 430 is decelerated. It may be operated to reduce the amount of air blown from the rotating shaft 411 (S220 ??S221). At this time, the pressure gauge 480 is installed on the gas transfer line L7 flowing into the automatic flashback arrestor 400, and the inlet pressure P1 of the brown gas introduced in consideration of the amount of air blown from the rotating shaft 411 ) May be configured to control the operation of the driving motor 430, and for intuitive determination, the gas discharge line L8 is used to measure the discharge pressure P2 discharged through the automatic flashback arrestor 400. It is desirable to be installed and configured to reduce prediction and calculation errors.

10 is a cross-sectional view showing a brown gas burner according to an embodiment of the present invention. As shown in FIG. 10, the brown gas generating system 1000 of the present invention includes an automatic backfire preventer 400 and a gas discharge line L8. ) Further comprises a brown gas burner 500 to form a flame by burning brown gas discharged by being connected to, wherein the brown gas burner 500 is formed as a tube having a hollow inside, and is formed on one side in the longitudinal direction. A gas flow path 521 including an inlet pipe 510 into which brown gas is introduced, a gas outlet 521a connected to the inlet pipe 510 and formed to discharge the brown gas introduced to the other side in the longitudinal direction, the The housing 520 which is formed to surround the outer surface of the gas flow path 521 and accommodates the gas flow path therein, and the other side opposite to the gas outlet 521a provided at one side of the gas flow path 521 It may include a cooling connector 530 coupled to the housing.

The inlet pipe 510 is a pipe through which the brown gas generated by the brown gas generating device 300 is introduced, and includes a bent portion 511 bent multiple times in a zigzag, and flows into the gas passage 520. This configuration is designed to allow the brown gas to flow in while maintaining a constant speed.When the inflow speed of the brown gas is high, the speed decreases due to the increase in friction and distance through the inlet pipe 510, so that the speed decreases at a constant speed. The effect of flowing into the gas flow path 521 is further increased.

The housing 520 is formed in a hollow tube shape to accommodate the gas flow path 521 therein, and is coupled to the inlet pipe 510 through the cooling connector 530 on one side in the longitudinal direction, , The other side in the longitudinal direction is formed so that a part of the gas flow path 521 is exposed to the outside, and the front end 522 is sealed on the other side in the longitudinal direction while surrounding the outer peripheral surface of the gas flow path 521 exposed to the outside. Is formed to be. At this time, conventionally, the gas outlet 521a of the gas flow path 521 is formed to be partially exposed to the front end of the housing 520, so that foreign matter or water vapor generated when using the conventional brown gas burner forms a flame. It interferes with the gas outlet 521a, or penetrates into the burner to cause backfire in the burner.

Accordingly, in order to solve the above problems, the present invention is ignited by the brown gas discharged from the gas outlet 521a of the gas passage 521 in the front end 522 in the longitudinal direction of the housing 520 to generate a flame. The point is characterized by having a backfire prevention structure formed inside the front end portion 522 of the housing 520, and the backfire prevention structure will be described in more detail below with reference to the drawings.

FIG. 11 is a view showing the connector of the brown gas burner according to FIG. 12. Referring to FIGS. 10 and 11, the cooling connector 530 of the brown gas burner 500 is the housing ( A gas channel connector 531 coupled to the rear of the 520 and connecting the gas channel 521 of the inlet pipe 510 to the housing 520 and the gas channel connector 531 are formed outside the housing ( 520) may include a refrigerant inlet 532 and a refrigerant outlet 533 for introducing and discharging the refrigerant into the interior.

At this time, the housing 520 is provided inside and connected to the refrigerant inlet 532 of the cooling connector 530, and extends in a longitudinal direction along the gas flow path 521 to the front end of the housing 520 ( A refrigerant flow path 523 for discharging the refrigerant introduced from the refrigerant inlet 532 may be further included in the inside of 522.

FIG. 12 is a partially enlarged view showing the front end of the brown gas burner of FIG. 10, and referring to FIG. 12 to describe the backfire prevention structure in the brown gas burner of the present invention in more detail, the backfire prevention structure is a brown gas discharge direction. The front end portion 522 of the housing 520 is formed to protrude a predetermined length (L) forward from the gas outlet 521a of the gas passage 521 so that the gas outlet 521a is formed of the housing 520 It is preferable that it is formed to be provided inside the front end 522, and at this time, the flame generated by igniting the brown gas discharged from the gas outlet 521a of the gas flow path 521 gradually has a larger diameter as it goes forward. As it is formed, the front end portion 522 of the housing 520 is formed such that the inner diameter D of the inner peripheral surface 522a gradually increases toward the front, and the brown gas discharged from the gas outlet 521a is ignited. It is preferably formed so as not to contact the generated flame.

At this time, typically, the pressure of the brown gas discharged from the gas flow path 521 is the minimum so that the flame generated by igniting the brown gas discharged from the gas outlet 521a does not cause a reverse flow into the gas flow path 522. The pressure (typically 1.5 bar) or more must be discharged at all times, and more preferably, the pressure of the discharged brown gas must be kept constant for a certain performance of the brown gas burner 500. Accordingly, the path of the flame discharged from the gas outlet 521a is also kept constant, and the backfire prevention structure has an inner diameter (D) of the inner circumferential surface of the front end 522 of the housing 520 according to the discharge pressure of the brown gas. ) Is the front end portion 522 of the housing 520 is formed 1.5 to 1.7 times larger than the length L spaced forward from the gas outlet 521a in the path of the flame discharged from the gas outlet 521a. The inner surface of the front end 522 of the housing 520 may not always contact.

13 is a cross-sectional view showing a brown gas burner according to another embodiment of the present invention, and FIG. 14 is a cross-sectional view showing a flashback prevention cap according to FIG. 12, and with reference to FIGS. 13 and 14, the backfire prevention of the present invention It will be described in detail with respect to the brown gas burner 500 provided with a backfire prevention cap 540 having a structure.

The backfire prevention structure according to another embodiment of the present invention is inserted into the front end 522 of the housing 520 of the brown gas burner 500 to have the backfire prevention structure without manufacturing the housing 520 By inserting and coupling the backfire prevention cap 540 having a, it is possible to further facilitate the manufacture of the housing 520. At this time, the backfire prevention cap 540 is preferably made of a heat-resistant material that does not deform in heat due to ignition of brown gas.

The backfire prevention cap 540 has a diameter smaller than the diameter of the gas outlet 521a and a fixing portion 541 in which the gas outlet 521a of the gas passage 521 is partially inserted and coupled to one side thereof. A backfire prevention structure formed to accommodate a gas discharge path 542 for discharging the brown gas discharged from (521a) to the front and an ignition point of a flame generated by ignition of the brown gas discharged from the gas discharge path 542 It may be formed including a tip portion 543 having a.

At this time, the front end 543 is extended in a predetermined length (L) forward from the gas discharge path 542, but is formed in a tapered shape having a hollow inside, and the inner diameter (D) of the tip part 543 is the gas discharge path ( It is preferable that it is formed to gradually increase from 542 to the front, and at this time, the inner diameter (d) of the gas discharge path 553, the inner diameter (D) of the front end 543, and the front end 543 extend forward The length L is the inner diameter of the gas outlet 521a of the brown gas burner 500, the diameter D at the front end 522 of the housing 520, and the front end 522 extends forward. It is preferable to have a reduction ratio corresponding to the formed length (L).

15 is an exemplary view showing the operation of the brown gas burner according to an embodiment of the present invention, the brown gas burner 500 of the present invention having the above-described backfire prevention structure, as shown in Figure 15, the gas The generation point of the flame generated by igniting the brown gas discharged through the flow path 521 is formed in the front end 522 of the housing 520, so that the front end 522 of the housing 520 becomes the flame The brown gas burner 500 can be continuously used without the flame (F) being extinguished due to external interference by protecting it in a shape surrounding the point of occurrence of (F), and the brown gas burner 500 of the present invention Even if the fugitive material (E), molten material (N), and water vapor (H) generated along the outer peripheral surface of the burner are close to the inside of the front end 522 of the housing 520, the heat of the flame and As foreign substances and water vapor are pushed by the pressure to penetrate into the inside of the brown gas burner 500 or block the gas outlet 521a, the backfire is prevented, so that the durability is excellent and the work can be continued without stopping the work in the middle. There is an effect of saving work time and cost.

The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

1000: Brown gas generation system
100: self-generation system 110: solar power generation device
120: wind power generator
200: energy storage system
300: Brown gas generating device
310: electrolyzer 311: electrode plate
312: electrode rod 313: sludge discharge unit
314: sludge tank
320: water tank 330: washing tank
340: heat exchanger 350: cooling device
400: automatic flashback preventer
410: backfire prevention unit
411: rotating shaft 411a: wing
411b: rotating sleeve 412: backfire prevention pipe
413: cooling housing 414: bearing
415: sealing member 416: connecting member
420: safety valve 430: drive motor
440: bypass 450: auxiliary generator
460: control unit 470: transmission
480: pressure gauge
500: Brown gas burner
510: inlet pipe 511: bent portion
520: housing 521: gas flow path
521a: gas outlet 522: front end
523: refrigerant flow path
530: cooling connector 531: gas flow connection port
532: refrigerant inlet 533: refrigerant outlet
540: backfire prevention cap 541: fixed part
542: gas discharge route 543: tip
H1: Water supply header H2: Drain header
L1: water supply line L2: drainage line
L3: Cooling water line L4: Water supply line
L5: electrolyte line L6: gas inlet line
L7: gas transfer line L8: gas discharge line
P1: Inlet pressure P2: Outlet pressure

Claims (11)

A self-powered device that performs self-power generation using natural energy including solar and wind power;
An energy storage system for storing power generated by the self-powered device;
A brown gas generator for generating brown gas by receiving the stored power from the energy storage system; And
An automatic backfire preventer installed on a gas transfer line through which brown gas is discharged from the brown gas generator to prevent backfire of the brown gas;
Including,
The automatic flashback preventer
A driving motor operated by receiving power from the energy storage system,
A rotation shaft that is connected to the rotation shaft of the driving motor and blows brown gas introduced from the gas transfer line by a spiral-shaped blade formed on an outer circumferential surface of one side in the longitudinal direction to prevent backfire, and
An auxiliary generator for generating electricity by receiving the rotational force of the driving motor according to the rotation of the rotating shaft and storing the generated power in the energy storage system,
Including
The drive motor has a rotation shaft protruding to both sides in the longitudinal direction, so that one drive shaft is connected to the rotation shaft, and the other power generation shaft is connected to an auxiliary generator to rotate with each other,
The auxiliary generator performs power generation by using the rotational force of the driving motor according to the braking of the rotational shaft,
The automatic flashback preventer,
A transmission installed at a connection portion between the driving motor and the auxiliary generator to vary a load applied to the driving motor according to the auxiliary generator, and
A control unit for controlling the operation of the transmission and the driving motor to adjust the load according to the transmission according to the operation of the driving motor,
A large-capacity brown gas generation system with improved backfire prevention and self-generation functions, characterized in that it further comprises.
delete delete delete The method of claim 1,
The automatic flashback preventer is a pressure gauge that measures the ejection pressure at which the brown gas introduced from the gas transfer line is discharged to the outside,
It further includes,
The control unit controls the output of the drive motor so that the ejection pressure of the brown gas measured by the pressure gauge is constant.
The method of claim 1,
The automatic flashback preventer,
A backfire prevention pipe having a hollow inside shape to accommodate the rotation shaft, and having the gas transfer line and a gas discharge line discharged along the rotation shaft, further comprising,
The rotary shaft further comprises a rotary sleeve formed in a tubular shape with a hollow inside at one end in the longitudinal direction,
The large-capacity brown gas generation system with improved backfire prevention and self-power function, characterized in that the outer diameter of the rotating sleeve is formed to have the same diameter as the inner diameter of the backfire prevention pipe.
The method of claim 5,
The brown gas generating system comprises: a brown gas burner connected to the automatic flashback arrestor and a gas discharge line to burn brown gas to form a flame;
It further includes,
The burner,
A gas flow passage having a gas outlet formed as a hollow tube inside, connected to an inlet pipe through which the brown gas flows in at one side in the longitudinal direction, and configured to discharge the introduced brown gas at the other side in the longitudinal direction, and
A housing configured to accommodate the gas flow path inside, wherein a part of the gas flow path is exposed at a front end portion in the discharge direction of the brown gas, and is formed to surround the outer surface of the exposed gas flow path so that the front end portion is sealed
Consists of including,
The housing has a backfire prevention structure in which the front end portion in the moving direction of the brown gas is formed so that the point where the brown gas discharged from the gas outlet of the gas passage is ignited to generate a spark inside the front end portion. Large-capacity brown gas generation system with improved backfire prevention and self-powered function.
The method of claim 7,
The backfire prevention structure is characterized in that the front end portion of the housing is formed to protrude a predetermined length (L) from the gas outlet of the gas channel in the discharge direction of the brown gas. Generation system.
The method of claim 8,
The backfire prevention structure is a large-capacity brown gas generation system with improved backfire prevention and self-power function, characterized in that the inner diameter (D) of the inner circumferential surface at the front end of the housing is gradually increased toward the front.
The method of claim 9,
The backfire prevention structure is characterized in that the inner diameter (D) of the inner circumferential surface at the front end of the housing is 1.5 to 1.7 times larger than the length (L) of the front end of the housing spaced forward from the gas outlet. Large-capacity brown gas generation system with improved self-generation function.
The method according to any one of claims 8 to 10,
The brown gas burner is inserted into the front end of the housing and the backfire prevention cap formed to have the backfire prevention structure;
Including more,
The backfire prevention cap is a large-capacity brown gas generation system with improved backfire prevention and self-power function, characterized in that made of a heat-resistant material.

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