JP3102932U - Hydrogen and oxygen mixed gas generation electrolyzer - Google Patents

Abstract

An electrolytic cell for a mixed gas generator capable of stably, efficiently, and safely generating a hydrogen / oxygen mixed gas by solving the problems of the conventional mixed gas generator of hydrogen and oxygen.
SOLUTION: Positive / negative DC power is applied to both left and right sides, respectively, and they are united to form an electrolytic chamber 100a inside, and water supplied to the inside of the electrolytic chamber 100a is A pair of left and right electrolytic cell cases 110 and 120 for decomposing to generate and discharge a hydrogen / oxygen mixed gas, and a plurality of electrode plates each having a water hole formed at a lower portion and a gas hole formed at an upper portion. 160, mounting grooves 172 for vertically mounting the respective electrode plates 160 are formed, and an electrode plate insulating support frame 170 for arraying and supporting the electrode plates 160 in the electrolytic chamber 100a at regular intervals is provided. An insulating plate 140 is arranged between the coupling contact portions of the pair of electrolytic cell cases 110 and 120 to insulate the electrolytic cells from each other.
[Selection diagram] FIG.

Description

  The present invention relates to an electrolytic cell of a mixed gas generator for electrolyzing water to generate a mixed gas having a hydrogen: oxygen equivalent ratio of 2: 1.

  As a method of generating hydrogen and oxygen by electrolyzing water, there are a method of generating each gas in a separated state, and a method of generating each gas in a mixed form.

  The present invention relates to an electrolytic cell of a mixed gas generator for generating hydrogen and oxygen in a mixed form.

As a mixed gas generator of hydrogen and oxygen, as disclosed in the following patent document, conventionally, a plurality of electrode plates are laminated inside an electrolytic cell, and a rubber insulating member is inserted and interposed therebetween. Those having a structure in which each electrode plate is isolated and insulated are widely used.
JP-A-06-192868 JP-A-08-260177 JP-A-09-071886 JP-A-11-001790

  However, due to the use of rubber as an insulating material between the electrode plates, there is a problem that, with the passage of time, the rubber is deteriorated and deformed due to the electrolyte and heat, and the electrolyte is leaked or a short circuit is generated. Often occur.

  In addition, due to the structure of the electrolytic cell, the distance between the electrode plates is as small as about 3 mm. Not only does the electrolysis efficiency of the electrolytic solution decrease due to the deterioration of the rubber material, but also the heat generation becomes severe, and the power loss increases. There is also a problem that time operation becomes impossible.

  The present invention solves the problems of the conventional mixed gas generator of hydrogen and oxygen, and provides an electrolytic cell of the mixed gas generator capable of stably and efficiently generating a hydrogen / oxygen mixed gas.

  The basic configuration of the electrolytic cell for generating a mixed gas of hydrogen and oxygen by electrolyzing water according to the present invention is symmetrically arranged, and positive and negative DC power supplies are applied to both left and right sides, respectively, and they are united. A pair of left and right electrolyzer cases for electrolyzing water supplied inside the electrolysis chamber to generate and discharge a mixed gas of hydrogen and oxygen, and a water hole at the bottom A plurality of electrode plates having gas ventilation holes formed thereon and mounting grooves for vertically mounting the respective electrode plates are formed at an upper portion, and the electrode plates are arranged and supported in an electrolytic chamber at regular intervals. And an electrode plate insulating support frame for performing the operation, wherein an insulating plate is arranged between the coupling contact portions of the pair of electrolytic cell cases to insulate the electrolytic cells from each other.

  By arranging a large number of electrolytic cells of the present invention, a large volume of mixed gas can be supplied by collecting the mixed gas generated in these electrolytic cells.

  In addition, the mixed gas obtained in the electrolytic cell is passed through a pressure regulator, a water ring type flashback arrestor, a moisture remover, a flame regulator, and a dry flashback arrestor in order, and supplied to a supply target such as a fusing torch. Because it will be provided, it is excellent in safety.

  Further, the mounting of the electrode plates is facilitated, and an appropriate distance between the respective electrode plates can be maintained.

  In addition, by providing an automatic water supply tank, an appropriate amount of water is stably supplied into the electrolysis tank, and a double flashback arrestor is installed in the mixed gas generation and discharge portion, Flashback can be prevented and safety can be ensured.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is an exploded perspective view of a hydrogen / oxygen mixed gas generator to which the electrolytic cell of the present invention is applied, and FIGS. 2a and 2b are an assembled perspective view of FIG. 1 and an external perspective view thereof.

  Referring to these figures, a hydrogen / oxygen mixed gas generator 10 is constituted by a number of electrolytic cells 100a, 100b, 100c that electrolyze water therein to generate and output a hydrogen / oxygen mixed gas. The electrolysis part 100 is provided.

  The electrolysis unit 100 is provided with a power supply 200 for electrolysis and an automatic supply tank 300 that automatically supplies an appropriate amount of water to the electrolysis unit 100 as the electrolysis unit 100 is decomposed and consumed.

  Further, a cooling means 400 for preventing overheating is provided in each of the electrolytic cells 100a, 100b, 100c.

  This cooling means 400 is constituted by cooling fans 410, 420 arranged adjacent to the respective electrolytic cells 100a, 100b, 100c. These cooling fans 410, 420 are automatically activated when the temperature of each of the electrolytic cells 100a, 100b, 100c rises by 30 ° C. or more, which is higher than room temperature, to cool the respective electrolytic cells.

  Reference numeral 500 denotes gas collecting means for collecting and sending a mixed gas of hydrogen and oxygen generated in each of the electrolytic cells 100a, 100b, and 100c.

  In this gas collecting means 500, gas outlets 102a, 102b, 102c of the respective electrolytic cells 100a, 100b, 100c are connected together by a hose 510 and a connection valve 520, and the gas generated in each electrolytic cell is formed. The mixed gas is collected and sent out.

  At the rear end of the gas collecting means 500, there is provided a pressure regulator 600 for controlling the pressure of the mixed gas of hydrogen and oxygen collected and sent out at a constant value.

  Reference numeral 600 denotes a pressure adjusting unit constituted by a primary pressure detector 610 and a secondary pressure detector 620.

When the generated gas pressure becomes about 1 kgf / cm ^{2, the} primary pressure detector 610 stops supplying power to the electrolysis unit 100 to interrupt the gas generation and production, and drops to about 0.8 kgf / cm ^2. Then, the power supply is started and the generation of the decomposition gas is restarted.

Further, the secondary pressure detector 620 has a function of a secondary safety means for interrupting gas generation when the gas pressure becomes about 1.5 kgf / cm ² when the primary pressure detector 610 fails.

  Reference numeral 700 denotes a flashback prevention unit disposed at the rear end of the pressure adjustment unit 600.

  The flashback prevention unit 700 includes a water ring type flashback prevention device 710 that prevents flashback by allowing generated gas to pass through water, and a ceramic flashback blocking piece that can withstand high temperatures. It is constituted by a dry flashback prevention device 720 for preventing flashback by changing the flow of the flame at the time of fire. As described above, in the present embodiment, it is possible to completely prevent flashback by passing the generated gas through the double flashback preventers 710 and 720.

  Between the water ring type flashback arrester 710 and the dry flashback arrestor 720, a water remover 730 for removing a small amount of water contained in the mixed gas, and when using the discharged gas, A flame controller 740 is provided for adjusting the temperature of the ignition flame to a temperature suitable for the intended use.

  The reference numeral 800 denotes the present device such as a pressure regulator, an electrolyte temperature sensor, a thermometer, a water level sensor of an automatic water supply tank, a power lamp, an emergency lamp, an emergency buzzer, an ammeter and a voltmeter, as well as current and voltage control. 1 shows a control unit that comprehensively controls the constituent elements of FIG.

  The above-described three-phase current of 200 VAC from the power supply 200 is converted to 75 VAC by the transformer 210, further converted to direct current by the AC / DC converter 220 to remove pulsating current, and then supplied to the electrolytic cells 100 a, 100 b, and 100 c. Supplied.

  When power is supplied from the power supply 200 to each of the electrolytic cells 100a, 100b, and 100c, an insulating material piece 12a is interposed in order to prevent current from leaking to the support frame 12 to which each electrolytic cell is attached. In this state, the insulating bushing 101a is inserted into the bolt 101 to fasten the electrolytic cells 100a, 100b, 100c and the support frame 12.

  3 to 13 show details of the respective constituent members shown in FIGS.

  FIG. 3 is an exploded perspective view of 100a showing one of the electrolytic cells constituting the electrolytic section 100 shown in FIG. 1, FIG. 4 is an assembled perspective view thereof, and FIG. It is sectional drawing of the -A line.

  As shown in these figures, in the electrolytic cell 100a, left and right cases 110 and 120 having the same size and area are arranged symmetrically.

  Coupling holes 112 and 122 are formed in the edges of the cases 110 and 120, respectively, and the bolts 130 are inserted with the respective coupling plates 114 and 124 in close contact with each other, and the bolts 130 are fastened with nuts 132. Thereby, the left and right cases 110 and 120 are brought into close contact with each other and united and joined.

  When the left and right cases 110 and 120 are connected, an insulating plate 140 is interposed between the connecting plates 114 and 124 so that the two cases are in close contact with each other, and the two cases are formed in an insulated state. An electrolysis chamber is formed.

  Since the insulating plate 140 is compressed when the left and right cases 110 and 120 are tightened by the fastening bolts 130, the insulating plate 140 must be made of an elastic material such as rubber. In particular, neoprene, which is less likely to become conductive even when compressed, is desirable. By attaching insulating papers 142, 144 on both sides of the insulating plate 140, a substantially perfect insulating effect can be obtained.

  The insulating plate 140 and the insulating papers 142 and 144 have rectangular hollows of the same size and shape as the coupling plates 114 and 124, respectively, and are inserted into portions corresponding to the coupling holes 112 and 122, respectively. Through holes 140a, 142a, 144a for penetrating the fastening bolt 130 are formed. As a result, the coupling holes 112 and 122 of the left and right cases 110 and 120 communicate with the through holes 140a, 142a and 144a, and the left and right cases 110 and 120 are coupled by the fastening bolt 130 and the nut 132 through the communication holes. Will be.

  In this connection, since the fastening bolt 130 is also made of metal, an insulating bushing 150 is inserted into the connection holes 112, 122 and the through holes 140a, 142a, 144a in order to completely insulate the left and right cases 110, 120. In this state, the fastening bolt 130 is inserted into the high-temperature insulating bushing 150, and the coupling holes 112, 122 and the through holes 140a, 142a, 144a are provided on the nut 132 side with the high-temperature insulating washer 152 interposed therebetween. The nut 132 is fastened to the inserted fastening bolt 130.

  At the time of joining the left and right cases 110 and 120, first, an adhesive for a gasket is applied to the inside of the joining plate 114 of one case 110, an insulating paper 142 is attached thereto, and then the outside of the insulating paper 142 Then, an adhesive for a gasket is applied again, and the insulating plate 140 is attached. Then, an adhesive for a gasket is applied to the outside of the insulating plate 140, and an insulating paper 144 is attached. After the insulating bushing 150 and the insulating washer 152 are mounted in a state where they are brought into close contact with each other, the cases 110 and 120 are connected by the fastening bolts 130 and the nuts 132. As a material of the insulating bushing 150 and the insulating washer 152, polyoxymethylene (Poly Oxy Methylene) having excellent insulating properties is preferable.

  A large number of electrode plates 160 are arranged in an internal electrolytic chamber formed by uniting the left and right cases 110 and 120. In order to arrange these electrode plates 160 at equal intervals, a support frame 170 that supports the electrode plates in an insulated state is provided in the electrolytic chamber.

  As described above, the electrolytic cell 100a including left and right symmetrical cases 110 and 120 having the same size and the same area has the gas discharge port 102 for discharging the generated mixed gas and water on the upper side. A manual water supply port 103 for supplying water, a water supply connection port 105 for supplying a part of the produced mixed gas to an automatic water supply tank (not shown) and adjusting the pressure of the automatic water supply tank to the pressure of the electrolytic cell 100a, and an electrolysis tank. A safety valve 104 that operates when abnormal pressure is generated in the tank 100a is provided.

The safety valve 104 is opened when the pressure in the electrolytic cell 100a exceeds the operating range and reaches a dangerous level, serves to discharge gas to the outside, and operates at an operating pressure of about 3 kgf / cm ^2. Is set. The electrolytic cell 100a has a water supply port 106 for receiving water from an automatic water supply tank and a drain valve 107 for discharging the electrolytic solution when cleaning the electrolytic cell and replacing the electrolytic cell. It is provided at the lower end on the left front side of 110 and 120. The water supply port 106 is formed at the lower left end on the left side of the electrolytic cell cases 110 and 120 in the drawing.

  As described above, the left and right cases 110 and 120 are electrically insulated, and one side is connected to the anode, and the other side is connected to the cathode. Power input terminals 116 and 126 are provided at intermediate portions of the cases 110 and 120 on both the left and right sides, respectively.

  In the case of a large-capacity hydrogen / oxygen mixed gas generator, two or more electrolytic cells 100a, 100b, and 100c having the same structure are connected in series by connecting wires, respectively, and a case of the electrolytic cell 100a on one side is connected. The anode power supply is applied to the power supply input terminal, and the cathode power supply is applied to the power supply input terminal of the case of the electrolytic cell 100c on the other side.

  Conversely, the same effect can be obtained even when the cathode power is applied to the power input terminal of the left case of one electrolytic cell 100a and the anode power is applied to the power input terminal of the right case of the other electrolytic cell 100c.

  Heat dissipating plates 180 made of aluminum are mounted above and below the power input terminals 116 and 126 via insulating paper 182. The electric current supplied to the electrolytic cell cases 110 and 120 flows to the heat radiating plate 180 of the insulating paper 182 to reduce power loss.

  The surface of the heat radiating plate 180 is made of polytetrafluoroethylene (Poly Tetra) in order to prevent corrosion of the case due to contact with the cases 110 and 120 made of stainless steel SUS316 and to provide strong corrosion resistance and heat resistance to heat. Fluoro Ethylene) is desirable.

  The connection of the heat radiating plate 180 to the cases 110 and 120 is performed by fixing the bolts 118 and 128 by welding or the like, forming through holes 182 a and 180 a in the insulating paper 182 and the heat radiating plate 180, and inserting the holes into the bolts 118 and 128. This is done by fastening and connecting nuts 184, 186 on the outside.

  In this connection, a cylindrical insulating bushing 150a is interposed between the bolts 118 and 128 and the through holes 182a and 180a, and an annular insulating washer 152a is interposed between the nuts 184 and 186 and the heat sink 180. .

  The electrolytic cell 100a is also provided with a water level gauge 190 and a temperature sensor. The temperature sensor includes an electrolytic solution temperature sensor 192 for detecting the temperature of the electrolytic solution inside the electrolytic bath 100a and an electrolytic bath temperature sensor 194 for detecting the surface temperature of the electrolytic bath 100a.

  When the temperature of the electrolyte detected by the electrolyte temperature sensor 192 reaches about 90 ° C., the power supply to the electrolytic cell 100a is automatically cut off. When overheating of the electrolytic cell is detected by the electrolytic cell temperature sensor 194, an electrolytic cell cooling fan (not shown) operates to cool the electrolytic cell 100a.

  6 to 8 show the details of the electrode plate insulating support frame 170. FIG. FIG. 6 is an exploded perspective view showing in detail the structure of the electrode plate shown in FIG. 4 and the electrode plate insulating support frame 170 supporting the electrode plate. FIGS. 7A and 7B show the electrode plate shown in FIG. FIG. 8 is a plan view of a lower plate portion of the plate insulating support frame and a side view thereof, and FIG. 8 is a plan view of an upper plate portion of the electrode plate insulating support frame shown in FIG.

  As shown in these figures, the electrode plate insulating support frame 170 is composed of four unit plates 170a to 170d of approximately the same shape in the upper, lower, left and right directions, which are made of epoxy resin having excellent heat resistance and insulation. As a result, a square mold is formed. As shown in FIGS. 7A and 7B, the left and right side plate portions 170a and 170b and the lower plate portion 170d of the unit plate have mounting grooves 172 in which an edge of the electrode plate 160 enters a predetermined portion of the upper surface of the inner drawing and is supported. Are formed at equal intervals. In this embodiment, eight mounting grooves 172 are formed at regular intervals as shown in FIG. 7A.

  These mounting grooves 172 have a function as electrode plate insertion slots, are linear grooves of about 1.5 mm in width, have a depth of about 6 mm, and a spacing of about 17 mm is appropriate. It is. The left and right plate portions 170a and 170b and the lower plate portion 170d do not include any members other than the mounting groove 172 in the flat plate-like body. In addition to the mounting groove, the upper plate 170c has a gas discharge port, a manual water supply port, a water supply connection port, and a gas connected to the safety valve formed on the upper side of the electrolytic cell case as shown in FIG. A discharge port communication hole 173, a manual water supply port communication hole 174, a water supply device connection port communication hole 175, and a safety valve communication hole 176 are formed. Water can be supplied between the electrode plates through these holes, and the produced mixed gas can be discharged.

  These mounting grooves 172 are preferably separated from each other at intervals of at least 10 mm or more, preferably at intervals of 17 mm, in order to reduce heat generation of the electrode plate 160. Further, the depth needs to be a depth at which the electrode plate 160 is stably supported, and is desirably at least 3 mm or more and about 6 mm.

  As described above, the electrode plates 160 are vertically inserted and mounted in the mounting grooves 172 of the electrode plate insulating support frame 170 vertically accommodated in the electrolytic chamber. The state is obtained.

  The electrode plate 160 is made of stainless steel SUS316 having a thickness of about 1 mm, and is formed with a 22 mm wide water passage hole 162 for passing an electrolytic solution at a distance of 6 mm from the lower end.

  The distance of 6 mm from the lower end is to mount the electrode plate 160 in the mounting groove of the electrode plate insulating support frame 170 at a position 6 mm from the lower end of the electrode plate 160. Then, by forming the water passage holes 162 at a distance of 6 mm, when replacing the electrolytic solution, all the electrolytic solution in the partitioned space between the electrode plates is discharged. Can be.

  A gas vent 164 through which the generated mixed gas can flow is formed in the upper part of the electrode plate 160. The gas vents 164 are preferably formed in a pair on the left and right on the upper side of the electrode plate 160, and the size thereof is suitably about 22 mm in diameter.

  The water holes 162 formed in the electrode plate 160 are for preventing a current from flowing to only one side during electrolysis. Has a water passage hole 162 on the left side, and the adjacent plate has a water passage hole 162 on the right side so that the positions of the water passage holes are alternately arranged on the left and right.

  FIG. 9 shows a configuration of the automatic water supply tank 300 applied to the present invention.

  The automatic water supply tank 300 is for automatically replenishing water consumed during electrolysis to the electrolytic cell. A water supply port 302 for supplying water to the electrolytic cell is provided at a lower portion of the tank, and a water supply port 302 is provided inside the tank. And a water inlet 304 for replenishing water. At the top of the tank, there is provided a water level sensor 310 for detecting a water level in the tank and sending a signal for opening and closing a solenoid valve 306 connected to a water inlet 304 through a hose or a pipe when water is insufficient.

  A check valve 308 is provided at the rear end of the solenoid valve 306 to prevent the supplied water from flowing backward.

  Next to the water level sensing sensor 310 is a manual water supply port 320 for manually refilling water, a safety valve 330 that operates when pressure in the tank is abnormal, a water supply connection port of the electrolytic cell, a hose, a pipe, and the like. And a pressure adjusting port 340 that makes the internal pressure of the tank the same as the internal pressure of the electrolytic cell is provided.

  At the same time, a water level gauge 350 for observing the water level inside the tank is provided on the upper side of the side surface of the tank, and a drain valve 360 for discharging water inside the tank is provided at the lower side of the tank. At the front and rear of the upper part, there are provided mounting plate parts 370, 370a which are seated on a support frame of the present apparatus and have bolt holes 372, 372a formed therein for bolting.

  FIG. 10a is a longitudinal sectional view of the flashback arrester applied to the present invention, and FIG. 10b is a plan view thereof.

  This flashback prevention device double constitutes a flashback prevention unit, and one of them is a water ring type flashback prevention device 710.

  The water ring type flashback preventer 710 discharges the mixed gas generated in the electrolytic cell once after passing through water, and if the flame flows backward toward the discharge port 711, the flow is prevented. Water reaching the inlet 712 is blocked by the water. As a result, the backflow of the flame is blocked by the water and the flame is prevented from reaching the electrolytic cell.

  The structure of the water ring type flashback preventer 710 will be described in more detail. A gas supply pipe 715 is inserted from above into a flashback prevention liquid trough 714 filled with water to a certain height, and cut off near the bottom. It is bent and arranged in an approximately "L" shape.

  A fine gas outlet hole 715a is formed in the bent inner end of the gas supply pipe 715, and gas flows into the inside of the flashback prevention liquid tank 714 through the gas outlet hole 715a. At least one or more gas dispersion plates 716 and 717, and in this embodiment, two gas dispersion plates 716 and 717 are arranged above and below the gas outflow holes 715a of the gas supply pipe 715 at regular intervals. The gas dispersion plates 716 and 717 are formed with supply pipe through holes 716a and 717a through which the gas supply pipe 715 passes, and a number of fine gas dispersion holes 716b and 717b are formed around the supply pipe through holes 716a and 717b. The gas dispersion holes 716b and 717b have a diameter of about 2 mm outside and a diameter smaller than that of the gas outlet hole 715a.

  With this structure, the gas mixture coming out through the gas outlet holes 715a is suppressed from generating bubbles while passing through the gas dispersion holes 716b and 717b of the double gas dispersion plates 716 and 717, and the discharge of the flashback prevention liquid tank 714 is prevented. It is discharged through the outlet 711.

  The flashback prevention liquid tank 714 is preferably formed in a cylindrical shape, and the gas distribution plates 716 and 717 mounted therein are also formed in a disk shape. Of course, the gas distribution plates 716 and 717 are fixed to the inside of the flashback prevention liquid tank 714 at a predetermined interval by welding or the like. In addition, a water inlet 718 for injecting water into the inside and an air port 718a for easily injecting water into the tub and forming an air passage when water is injected through the water inlet 718 are provided at an upper part of the flashback prevention liquid tank 714. Is provided. In addition, a drain valve 719 for discharging the water inside is provided below the flashback prevention liquid tank 714.

  As described above, the mixed gas is discharged from the water ring type flashback preventer 710 and supplied to the water remover 730 for removing the moisture contained in the mixed gas.

  11a and 11b show the principle and structure of the water remover 730. FIG. 11a is a longitudinal sectional view showing the structure of the moisture remover in detail, and FIG. 11b is a sectional view taken along line BB of FIG. 11a.

  The moisture remover 730 serves to remove a small amount of moisture contained in the mixed gas. In the water remover 730, a gas inflow pipe 734 is connected eccentrically to the side surface of the remover cylinder 732, and a gas outflow pipe 735 is partially inserted from the upper surface of the remover cylinder 732 into the inside on the central axis. Has been fixed. The end of the gas outlet pipe 735 is located approximately in the middle of the removing tube 732, and the gas inlet pipe 734 is located above the end of the gas outlet pipe 735. A funnel-shaped water removal pipe 736 is arranged below the gas outlet pipe 735, and the lower part thereof communicates with a drain valve 738 provided at the lower end of the remover cylinder 732.

  With such a structure of the water remover 730, the mixed gas discharged from the water ring type flashback preventer 710 is eccentrically introduced into the water remover 730 through the gas inlet pipe 734. Then, the inflowing mixed gas descends while rotating along the inside of the remover cylinder 732, and at this time, the moisture contained in the mixed gas drops and is separated by the generated centrifugal force. Further, the separated water collects in the water removal pipe 736. The mixed gas from which the moisture has been removed flows into the gas outlet pipe 735, moves toward the upper part of the remover cylinder 732, and flows out. The moisture collected in the moisture removing pipe 736 is discharged to the outside by opening the drain valve 738.

  The gas mixture exiting the moisture remover through the gas outlet tube 735 is then flowed into a flame conditioner.

  This flame conditioner is shown in FIG. FIG. 12a is a longitudinal sectional view of the flame controller, and FIG. 12b is a plan view thereof.

  As shown in the figure, the flame regulator 740 has the same structure as the water ring type flashback preventer 710 shown in FIG. That is, a gas inflow pipe 742, which is cut into a substantially “L” shape, is inserted into a cylindrical organic solvent tank 741 filled with an organic solvent to a certain height from the upper side, and the mixed gas is organically formed at the bottom. The same structure is used so that the mixed gas is supplied to the inside of the solvent tank 741 and the mixed gas flows out to the discharge port 746 via the gas dispersion plates 744 and 745 installed in two stages. However, the organic solvent tank 741 of the flame controller 740 is filled with an organic solvent to a certain height, and normal organic hexane, methyl alcohol, or the like is used as the organic solvent according to the use. Therefore, the mixed gas flowing into the flame controller 740 through the gas inlet pipe 742 passes through the organic solvent tank 741 and a small amount of the organic solvent is included in the mixed gas in a gaseous form. Will change the temperature of the flame. The mixed gas containing the organic solvent is discharged to the outside through the discharge port 746 provided at the upper part of the organic solvent tank 741 and supplied to the dry flashback prevention device 720.

  FIG. 13 is a longitudinal sectional view showing the dry flashback preventer 720.

  As shown in the figure, the dry flashback preventer 720 includes a lower casing 722 having a space formed therein, and an upper plug 724 screwed into an upper end opening of the lower casing 722. A gas inlet 724a is formed in the upper stopper 724 in the vertical direction of the center, and the gas inlet 724a is branched at its end into a plurality of narrow flow tubes 724b to change the flow of the flame at the time of flashback. Play a role.

  Therefore, the mixed gas supplied by the above-mentioned flame controller passes through the gas inflow path 724a of the upper stopper 724, and flows into the inside of the lower casing 722 through the thin flow tubes 724b.

  A flashback blocking piece 726 is mounted inside the lower casing 722. The flashback blocking piece 726 is supported in the lower casing 722 by an elastic piece 728 made of stainless steel, the lower end is opened in a cylindrical shape, and the upper end is closed.

  Further, the backfire blocking piece 726 is made of a ceramic material having fine pores, and blocks the flame that has flowed back into the outlet 722a formed at the lower end of the lower casing 722. The mixed gas flowing through the flow capillary 724b of the upper stopper 724 flows toward the outlet 722a through fine pores. A female screw 722b is formed at an outlet 722a of the lower casing 722, and a nipple 729 is connected thereto. A gas supply hose is connected to the nipple 729 to supply the mixed gas to an apparatus for using the mixed gas, for example, a fusing torch.

  FIG. 14 is a block diagram illustrating the configuration and functions of the power supply unit 200.

  In the figure, a power supply unit 200 includes a voltage regulator SCR 230 that regulates and outputs a supply voltage, and a transformer that receives a supply of three-phase AC 200 V supplied through the voltage regulator 230 and transforms the supply to AC 75 V. 210, an AC / DC converter 220 that converts AC 75 V AC output from the transformer 210 into DC, and removes a pulsating current from the DC output in the AC / DC converter 220 and supplies the DC to the electrolysis unit 100. A pulsating flow remover 240 is provided. The pulsating flow remover 240 is connected to only one polarity, for example, a cathode, of the current output from the AC / DC converter 220.

  In the example shown in FIG. 3, three electrolytic cells 100a, 100b, and 100c are connected in series to the power supply unit 200, and DC 25 V is used for each operating voltage. The voltage is DC 75V. Even when the number of electrolytic cells is four or more or two or less, the voltage supplied from the power supply unit 200 can be adjusted.

  FIG. 15 is a block diagram schematically showing a configuration of a hydrogen / oxygen mixed gas generator to which the electrolytic cell of the present invention is applied.

  This block diagram sequentially illustrates the operation flow of the hydrogen / oxygen mixed gas generator, and the operation of this device will be described.

When a direct current is supplied from the power supply unit 200 to the electrolytic unit 100 constituted by the electrolytic cells 100a, 100b, and 100c filled with the electrolytic solution, electrolysis occurs and a hydrogen / oxygen mixed gas is generated. The generated mixed gas is collected and transferred to the water ring type flashback preventer 710 via the pressure adjusting unit 600. The signal of the gas pressure detected by the pressure adjusting unit 600 is transferred to the control unit 800. When the gas pressure detected by the primary pressure detector 610 of the pressure adjusting unit 600 becomes about 1 kgf / cm ² , the control unit 800 stops the power supply of the power supply unit 200 and interrupts gas production. When the gas pressure drops to about 0.8 kgf / cm ^2, power is supplied again, and gas generation is restarted. The secondary pressure detector 620 has a function of a secondary safety device that interrupts gas production when the gas pressure reaches about 1.5 kgf / cm ² when the primary pressure detector 610 fails. When the operation of the electrolytic cell is interrupted, the user is notified of an abnormal condition of the apparatus through an emergency lamp and a buzzer.

  The mixed gas input through the pressure adjusting unit 600 in this way passes through the water ring type flashback preventer 710 and flows into the water remover 730. The moisture is removed by the moisture remover 730, and only the mixed gas flows out through the outlet provided at the upper part and flows into the flame controller 740. The mixed gas is mixed with a predetermined organic solvent in the flame controller 740 and flows to the dry flashback preventer 720. The mixed gas that has passed through the dry flashback preventer 720 is supplied to a device that requires the mixed gas and used. As an example, a supply hose is connected to the nipple 729 of the dry flashback preventer 720 to supply the mixed gas to the fusing torch and can be used as a fusing gas source.

  FIG. 16 is a block diagram illustrating the control operation of the control unit in the hydrogen / oxygen mixed gas generator using the electrolytic cell of the present invention.

  As shown in the drawing, when producing a mixed gas by electrolyzing water in the electrolytic cells 100a, 100b, and 100c, the electrolyte temperature sensor 192 continuously detects the temperature of the electrolyte and controls the power supply. 810. At this time, when the detected temperature of the electrolytic solution exceeds 90 ° C., power supply control section 810 sends a signal to power supply section 200 to cut off the supply of electricity to electrolytic cells 100a, 100b, 100c.

  At the same time, the temperature of the electrolytic cell surface is also sensed by the electrolytic cell temperature sensor 194, and when the detected temperature becomes equal to or higher than 30 ° C., the cooling fan drive switch 820 is operated to drive the cooling fans 410 and 420, and the electrolytic cells 100a, 100b and 100c will be cooled. On the other hand, when the amount of water in the electrolytic cell is reduced by the generation of the mixed gas of the electrolytic cells 100a, 100b, and 100c and reaches a certain level, the automatic water supply tank 300 is installed at the same height and automatically supplies water. The water level is accordingly lower. At this time, the water level sensor 310 provided in the automatic water supply tank 300 detects the water level, and transfers the detected water level to the water level adjustment switch 830 of the water tank if the water level is below a certain level. As a result, the water level adjustment switch 830 is operated to drive the solenoid valve 306, thereby supplying water from the tap water to the automatic water supply tank 300.

  The embodiments disclosed herein are for the purpose of helping those skilled in the art to understand the present invention, and the technical idea of the present invention is not limited to the description of the embodiments, and is within the scope of the technical idea of the present invention. Of course, various modifications are possible.

  The mixed gas of hydrogen and oxygen produced by the electrolytic cell of the present invention is used not only as a heat source for welding, cutting, various types of thermal processing, etc., but also as a hydrogen / oxygen mixed gas heater and a hydrogen / oxygen mixed gas boiler. It can be widely used as a fuel supply device for a hydrogen / oxygen mixed gas heating furnace, a hydrogen / oxygen mixed gas incinerator, a hydrogen / oxygen mixed gas carbonization device, a mixed gas engine, and the like.

FIG. 2 is an exploded perspective view of the hydrogen / oxygen mixed gas generator to which the electrolytic cell of the present invention is applied. FIG. 2A is an assembly view of a hydrogen / oxygen mixed gas generator using the electrolytic cell according to the present invention. FIG. 2A is an assembly perspective view, and FIG. 1 shows an exploded perspective view of the electrolytic cell of the present invention. The assembly drawing of the electrolytic cell is also shown. FIG. 5 is a sectional view taken along line AA of FIG. 4. 2 shows the structure of an electrode plate and an electrode plate insulating support frame supporting the electrode plate. FIG. 7A is a plan view, and FIG. 7B is a side view, showing a lower plate portion of the electrode plate insulating support frame. FIG. 4 shows a plan view of an upper plate of the electrode plate insulating support frame. It is a block diagram of an automatic water supply tank. It is a block diagram of a water ring type backfire prevention device, FIG. 10a is a longitudinal cross-sectional view, FIG. 10b is a top view. 1 shows a moisture remover. 11A is a longitudinal sectional view, and FIG. 11B is a sectional view taken along line BB of FIG. 11A. 3 shows a flame regulator. FIG. 12a shows a longitudinal section, and FIG. 12b shows a plan view. It is a longitudinal cross-sectional view of a dry flashback arrester. FIG. 3 is a block diagram illustrating a configuration of a power supply unit. FIG. 4 is a block diagram illustrating an operation state of the present invention. It is a block diagram for explaining the control operation of the control unit.

Explanation of reference numerals

100: electrolysis part 100a, 100b, 100c: electrolyzer 110, 120: left and right case 140: insulating plate 150: insulating bushing 152: insulating washer 160: electrode plate 170: electrode plate insulating support frame 180: heat sink 190: water level gauge 192 : Electrolyte temperature sensor 194: Electrolyzer temperature sensor 200: Power supply unit 210: Transformer 220: AC / DC converter 300: Automatic water supply tank 400: Cooling means 500: Gas collecting means 600: Pressure adjusting unit 610: Primary Pressure detector 620: Secondary pressure detector 700: Flashback prevention unit 710: Water ring type flashback prevention unit 720: Dry flashback prevention unit 730: Moisture removal unit 740: Flame controller 800: Control unit

Claims (7)

It is arranged symmetrically, and the positive and negative DC power supplies are applied to the left and right sides respectively, and they are united to form an electrolytic chamber inside, and the water supplied inside the electrolytic chamber is electrolyzed to hydrogen and oxygen. A pair of left and right electrolytic cell cases for generating and discharging a mixed gas,
A plurality of electrode plates in which water holes are formed in the lower part and gas vents are formed in the upper part,
A mounting groove for vertically mounting each electrode plate is formed, and an electrode plate insulating support frame for arranging and supporting the electrode plates in an electrolytic chamber at regular intervals,
An electrolytic cell for generating a mixed gas of hydrogen and oxygen, wherein an insulating plate is arranged between the coupling contact portions of the pair of electrolytic cell cases to insulate the electrolytic cells from each other.   The electrolytic cell for generating a mixed gas of hydrogen and oxygen according to claim 1, further comprising insulating paper attached to both sides of the insulating plate and interposed between a pair of left and right electrolytic cell cases. At the top of each of the left and right electrolyzer cases,
A manual water inlet for manually supplying water,
A water supply port connected to the automatic water supply tank and connected to the automatic water supply tank, and a part of the mixed gas generated internally to match the pressure is supplied to the automatic water supply tank and the water supply port is internally generated. A gas outlet for discharging the mixed gas,
It is equipped with a safety valve that automatically discharges pressure when overpressure occurs.
Also,
At the bottom of each of the left and right electrolytic cell cases,
3. The electrolytic cell for generating a mixed gas of hydrogen and oxygen according to claim 1, wherein a water supply port to which water is automatically supplied and a power input terminal to which a positive / negative power is applied are formed.   The upper and lower left and right sides of the electrode plate insulating support frame are divided and connected, and the upper plate portion of these electrode plate insulating support frames communicates with the above manual water supply port, water supply port connection port, safety valve, and gas discharge port, respectively. The electrolytic cell for generating a mixed gas of hydrogen and oxygen according to claim 3, wherein the holes are perforated.   The left and right electrolytic cell cases are fastened with bolts and nuts, an insulating bushing is provided outside the bolt, and an insulating washer is provided inside the nut, whereby the left and right electrolytic cell cases are insulated from each other. The mixed gas generating electrolytic cell of hydrogen and oxygen according to claim 1.   2. The electrolytic cell for generating a mixed gas of hydrogen and oxygen according to claim 1, wherein a heat radiating plate is attached to the surface of the electrolytic cell case via insulating paper.   2. The electrolytic cell for generating a mixed gas of hydrogen and oxygen according to claim 1, wherein the electrode plate insulating support frame is made of epoxy resin, and a distance between the mounting grooves is set to 10 mm or more.

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