System and method for generating nanometer hydrogen bubble liquid

Abstract

The invention relates to a system for generating nano hydrogen bubble liquid and a method for generating the nano hydrogen bubble liquid, and belongs to the technical field of obtaining bubbles with the size smaller than 1 micron by introducing gas into a liquid medium in a gas and liquid mixed dissolving method or device. According to the system and the method, an explosion reaction cavity is formed in a closed liquid storage tank, hydrogen and oxygen are mixed according to a proper proportion and concentration and then are introduced into the explosion reaction cavity, and explosion is formed in the explosion reaction cavity through ignition of an electric spark needle; after explosion, shock waves and high temperature and high pressure are generated, hydrogen and water are mixed and collide with each other on the conical impactor, and finally nano hydrogen bubble liquid is formed.

Description

Technical Field

[0001] The present invention relates to a system and method for generating hydrogen nanobubble water by utilizing a hydrogen-oxygen explosion reaction and the combination of hydrogen and water. This system and method pertains to the technical field of introducing gas into a liquid medium in a dissolution method or apparatus for mixing gas and liquid to obtain bubbles smaller than 1 micron in size (B01F23 / 2375). Background Art

[0002] Traditional methods for producing nano-hydrogen bubble water rely primarily on mechanical force or energy input, creating nano-hydrogen bubbles in water through high-pressure dissolution, mechanical shearing, or ultrasonic cavitation. However, efficient nano-hydrogen bubble water production technologies are still lacking for specific applications, such as hydrogen energy storage and conversion. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: how to efficiently obtain nano hydrogen bubble liquid.

[0004] The present invention proposes a technical solution to solve the above technical problems. The first one is: a system for generating nano hydrogen bubble liquid, comprising a pressure-resistant liquid storage tank, an air source control unit and a control module, wherein the air source control unit comprises a hydrogen source, an oxygen source, a hydrogen regulating valve, an oxygen regulating valve, a hydrogen concentration tester and a check valve; an explosion reaction chamber and a conical impactor are provided in the pressure-resistant liquid storage tank; the liquid in the pressure-resistant liquid storage tank covers the top of the explosion reaction chamber but does not fill the entire volume of the pressure-resistant liquid storage tank; the explosion reaction chamber is fixed by a fixing bracket fixed to the top wall of the pressure-resistant liquid storage tank and is located in the middle of the pressure-resistant liquid storage tank; the bottom of the explosion reaction chamber is open to the downward side and the other facing sides are closed; the conical impactor is fixed to the bottom of the pressure-resistant liquid storage tank and is located directly below the explosion reaction chamber; the conical impact surface of the conical impactor faces the downward side of the explosion reaction chamber. The outlet of the hydrogen source is provided with a hydrogen one-way switch valve, the outlet of the oxygen source is provided with an oxygen one-way switch valve, the hydrogen one-way switch valve is communicated with the hydrogen regulating valve through a hydrogen pipeline, the oxygen one-way switch valve is communicated with the oxygen regulating valve through an oxygen pipeline, a hydrogen flowmeter is provided on the hydrogen pipeline, and an oxygen flowmeter is provided on the oxygen pipeline; the gas outlets of the hydrogen source and the oxygen source are respectively connected to the inlet of the hydrogen concentration tester through the hydrogen pipeline and the oxygen pipeline, the outlet of the hydrogen concentration tester is connected to the inlet of the check valve, the outlet of the check valve is connected to the interface on the top of the explosion reaction chamber by closing the mixing gas pipeline that penetrates into the pressure-resistant liquid storage tank, an electric spark needle is provided in the explosion reaction chamber, the control module is connected to the electric spark needle through an electric wire that penetrates into the pressure-resistant liquid storage tank, an electronic flowmeter and an electronic switch valve are provided on the mixing gas pipeline, and the electronic flowmeter and the electronic switch valve are electrically connected to the control module.

[0005] Furthermore, before using the system, the hydrogen regulating valve and the oxygen regulating valve are continuously adjusted so that the hydrogen concentration in the hydrogen-oxygen mixed gas measured by the hydrogen concentration tester reaches 66.7-75%, and the molar volume ratio of hydrogen to oxygen is greater than 2.

[0006] Furthermore, when the system is in use, the hydrogen regulating valve and the oxygen regulating valve are opened, and the hydrogen-oxygen mixed gas is discharged into the explosion reaction chamber from the interface at the top of the explosion reaction chamber and compresses the liquid in the explosion reaction chamber to be discharged toward the bottom opening of the explosion reaction chamber. The hydrogen-oxygen mixed gas fills and is sealed in the explosion reaction chamber, and the control module controls the electric spark needle in the explosion reaction chamber to ignite and form an explosion in the explosion reaction chamber.

[0007] Furthermore, a one-way valve is provided at the interface on the top of the explosion reaction chamber, and the inlet of the one-way valve is connected to the gas mixing pipeline.

[0008] Furthermore, the side wall of the pressure-resistant liquid storage tank is provided with an interlayer cavity and a circulation inlet and a circulation outlet connected to the interlayer cavity. Cooling liquid is provided in the interlayer cavity, and the circulation inlet and circulation outlet are respectively connected to the outlet and inlet of the circulation pump through a circulation pipeline.

[0009] The second technical solution proposed by the present invention to solve the above technical problems is: a method for generating nano hydrogen bubble liquid using a system for generating nano hydrogen bubble liquid according to the first technical solution, comprising the following steps: 1) Add water Open the valve and add water into the pressure-resistant liquid storage tank through the liquid adding pipe. Stop adding water when the liquid level gauge shows the specified liquid level. 2) Hydrogen and oxygen mixing debugging Open the hydrogen one-way switch valve and the hydrogen regulating valve, and at the same time open the oxygen one-way switch valve and the oxygen regulating valve, and continuously adjust the hydrogen regulating valve and the oxygen regulating valve. At the same time, check the hydrogen concentration value of the hydrogen concentration tester and the flow values ​​of the hydrogen flow meter and the oxygen flow meter until the ratio of the hydrogen outlet flow rate to the oxygen outlet flow rate is greater than 2 and the hydrogen concentration in the hydrogen-oxygen mixed gas reaches 66.7-75%; 3) Introduce hydrogen and oxygen mixture into the explosion reaction chamber The control module controls the opening of the electronic switch valve to pass the hydrogen-oxygen mixed gas into the explosion reaction chamber through the mixed gas pipe. The amount of the hydrogen-oxygen mixed gas introduced is controlled according to the signal fed back to the control module by the electronic flow meter. The hydrogen-oxygen mixed gas introduced into the explosion reaction chamber first uses the pressure to discharge the water in the explosion reaction chamber toward the downward opening at the bottom of the explosion reaction chamber, thereby forming a closed cavity in the explosion reaction chamber. The hydrogen-oxygen mixed gas fills and is enclosed in the explosion reaction chamber 14. 4) Explosion The control module controls the electric spark needle in the explosion reaction chamber to ignite and form an explosion in the explosion reaction chamber.

[0010] Furthermore, the explosion in step 4) can be repeated multiple times.

[0011] The principle and beneficial effects of the present invention are as follows: a hydrogen-oxygen mixture is discharged into an explosion reaction chamber within a sealed liquid storage tank at a suitable ratio (2:1) and a desired concentration (hydrogen concentration of 66.7-75%) under source pressure. The liquid in the explosion reaction chamber is initially forced out of the bottom of the chamber, filling the chamber with the hydrogen-oxygen mixture. Since the hydrogen concentration of the hydrogen-oxygen mixture is within the explosion limit, an explosion can occur within the chamber when a spark needle within the chamber is controlled to ignite. Following the explosion: First, a large amount of energy is released within an extremely short period of time (on a microsecond timescale) at the initial explosion, forming high-temperature, high-pressure bubbles (due to the excess hydrogen in the liquid after the explosion), with temperatures reaching 1000°C instantaneously. Subsequently, as the hydrogen bubbles expand, the gas-liquid interface destabilizes under the combined influence of inertia and surface tension due to the Rayleigh-Taylor instability, causing the original large bubble to split into small bubble clusters ranging in size from micrometers to nanometers. At the same time, the shock wave from the explosion rapidly propagates to the conical impactor, causing collisions and instantly shattering the gas and water, forming a mixture of micro- and nano-hydrogen bubbles. The shock wave also triggers intense turbulence, and the shear forces generated by this turbulence further tear the bubbles apart, ultimately forming nano-sized hydrogen bubbles. The high pressure generated at the moment of the explosion significantly increases the solubility of hydrogen in water, a process that follows Henry's law. Once the explosion subsides and the pressure drops to ambient pressure, hydrogen begins to precipitate due to its supersaturation. However, due to its limited diffusion rate, this supersaturated hydrogen cannot escape quickly, ultimately remaining in the water as stable nano-hydrogen bubbles. The dynamic nature of this entire process allows a large number of hydrogen-containing nano-hydrogen bubbles to form and maintain in the water after the explosion.

[0012] In summary, the present invention provides an innovative system and method for generating nano-bubble hydrogen liquid. This system and method enable efficient production of nano-bubble hydrogen liquid, providing strong technical support for its widespread application. This method also allows the addition of other gases without affecting any gases present in the explosive environment, thereby generating a gas-added nano-bubble liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The system and method for generating nano hydrogen bubble liquid of the present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 1 is a schematic structural diagram of a system for generating nano hydrogen bubble liquid according to an embodiment; Figure 2 yes Figure 1 Schematic diagram of the structure of the gas source part decomposed from the figure; Figure 3 This is a particle size distribution curve spectrum of the nano hydrogen bubble water generated in Example 1 analyzed by a particle tracer; Figure 4 This is a particle size distribution curve spectrum of the nano hydrogen bubble water generated in Example 2 analyzed by a particle tracer; Figure 5 This is a particle size distribution curve spectrum of the nano hydrogen bubble water generated in Example 3 analyzed by a particle tracer; Figure 6 This is a particle size distribution curve spectrum of the nano hydrogen bubble water generated in Example 4 analyzed by a particle tracer; DETAILED DESCRIPTION Example 1

[0015] A system for generating nano hydrogen bubble liquid in this embodiment, such as Figure 1 As shown, it includes a pressure-resistant liquid storage tank 22, an air source control unit 1 and a control module 21. Figure 2 As shown, the gas source control unit 1 includes a hydrogen source 23, an oxygen source 24, a hydrogen regulating valve 26, an oxygen regulating valve 27, a hydrogen concentration tester 28 and a check valve 29; a hydrogen one-way switch valve 25 is provided at the outlet of the hydrogen source 23, and an oxygen one-way switch valve 30 is provided at the outlet of the oxygen source 24. The hydrogen one-way switch valve 25 is connected to the hydrogen regulating valve 26 through a hydrogen pipeline 4-1, and the oxygen one-way switch valve 30 is connected to the oxygen regulating valve 27 through an oxygen pipeline 4-2. A hydrogen flowmeter 9-1 is provided on the hydrogen pipeline 4-1, and an oxygen flowmeter 9-2 is provided on the oxygen pipeline 4-2; the gas outlets of the hydrogen source 23 and the oxygen source 24 are connected to the inlet of the hydrogen concentration tester 28 through the hydrogen flowmeters 9-1 and 9-2, the hydrogen pipeline 4-1 and the oxygen pipeline 4-2, the hydrogen regulating valve 26, and the oxygen regulating valve 27 respectively, and the outlet of the hydrogen concentration tester 28 is connected to the inlet of the check valve 29. The hydrogen regulating valve 26, the oxygen regulating valve 27, the hydrogen concentration tester 28 and the check valve 29 all need to have explosion-proof certification. The hydrogen source 23 and the oxygen source 24 of this embodiment are both stored in high-pressure gas cylinders.

[0016] like Figure 1As shown, an explosion reaction chamber 14 and a conical impactor 17 are provided in the pressure-resistant liquid storage tank 22. The liquid in the pressure-resistant liquid storage tank 22 covers the top of the explosion reaction chamber 14 and does not fill the entire volume of the pressure-resistant liquid storage tank 22 (that is, a small amount of free space is left in the pressure-resistant liquid storage tank 22). The explosion reaction chamber 14 is fixed by a fixing frame 10 fixed to the top wall of the pressure-resistant liquid storage tank 22 and is located in the middle of the pressure-resistant liquid storage tank 22. The bottom of the explosion reaction chamber 14 is open to the downward side and the other facing sides are closed. The conical impactor 17 is fixed to the bottom of the pressure-resistant liquid storage tank 22 and is located directly below the explosion reaction chamber 14. The conical impact surface of the conical impactor 17 is open to the downward side of the explosion reaction chamber 14. The outlet of the check valve 28 is connected to the interface at the top of the explosion reaction chamber 14 by closing the mixing gas pipeline 40 that penetrates into the pressure-resistant liquid storage tank 22. An electric spark needle 20 is provided in the explosion reaction chamber 14, and the control module 21 is connected to the electric spark needle 20 through an electric wire that penetrates into the pressure-resistant liquid storage tank 22.

[0017] The explosion reaction chamber 14 of this embodiment is cylindrical. An exhaust valve port 8 is located at the top of the pressure-resistant liquid storage tank 22. A liquid filling pipe 11 extends from the top of the pressure-resistant liquid storage tank 22 into the pressure-resistant liquid storage tank 22. A check valve 12 is located at the top of the explosion reaction chamber 14. The inlet of the check valve 12 is connected to the gas mixing line 40. The gas mixing line 40 is equipped with an electronic flowmeter 2 and an electronic on / off valve 3, which are electrically connected to the control module 21.

[0018] In this embodiment, a liquid level gauge 6 is installed on the inner sidewall of the pressure-resistant liquid storage tank 22. The sidewall of the pressure-resistant liquid storage tank 22 forms an interlayer cavity 5, with a circulation inlet 16 and a circulation outlet 7 communicating with the interlayer cavity 5. Cooling liquid is provided within the interlayer cavity 5, and the circulation inlet 16 and the circulation outlet 7 are connected to the outlet and inlet of a circulation pump, respectively, via circulation piping (not shown). The spark plug used is a CMR6H model, manufactured by Tokushi Ceramics of Japan. It has an IP68 waterproof rating (for long-term underwater use) and a pressure resistance of 100 MPa (iridium center electrode + platinum ground electrode).

[0019] The specific working process of generating nano hydrogen bubble water using the system for generating nano hydrogen bubble water in this embodiment is as follows: 1. Add water Open the valve 8 and add water 15 into the pressure-resistant liquid storage tank 22 through the liquid adding pipe 11. Stop adding water when the liquid level gauge 6 shows the specified liquid level.

[0020] 2. Hydrogen and oxygen mixture debugging Open the hydrogen one-way switch valve 25 and the hydrogen regulating valve 26, and at the same time open the oxygen one-way switch valve 30 and the oxygen regulating valve 27, and continuously adjust the hydrogen regulating valve 26 and the oxygen regulating valve 27, while checking the hydrogen concentration value of the hydrogen concentration tester 28 and the flow values ​​of the hydrogen flowmeter 9-1 and the oxygen flowmeter 9-2, until the ratio of the hydrogen outlet flow rate to the oxygen outlet flow rate is controlled to be greater than 2 and the hydrogen concentration in the hydrogen-oxygen mixed gas reaches 66.7-75%.

[0021] 3. Introduce hydrogen and oxygen mixture into the explosion reaction chamber The control module 21 controls the opening of the electronic on / off valve 3, allowing the hydrogen-oxygen mixture to flow into the explosion reaction chamber 14 through the mixture pipe 40. The amount of hydrogen-oxygen mixture introduced is controlled based on the signal fed back to the control module 21 by the electronic flowmeter 2. The hydrogen-oxygen mixture introduced into the explosion reaction chamber 14 initially uses its pressure to displace water from the explosion reaction chamber 14 toward the downward opening at the bottom of the explosion reaction chamber 14, thereby forming a closed cavity within the explosion reaction chamber 14. The hydrogen-oxygen mixture is then filled and sealed within the explosion reaction chamber 14. 4. Explosion The control module 21 controls the spark pin 20 within the explosion reaction chamber 14 to ignite, creating an explosion within the chamber. At the moment of explosion, the one-way valve 12 prevents the explosive energy from being transferred back to the gas mixing line 40. The hydrogen and oxygen within the explosion reaction chamber 14 react instantly (2H2 + O2 = H2O), producing water and instantly releasing a large amount of heat. The remaining unreacted hydrogen within the chamber 14 rapidly expands with the resulting water vapor. During the expansion of the hydrogen bubbles, the gas-liquid interface destabilizes due to the combined effects of inertia and surface tension, causing the original large bubbles to split into clusters of smaller bubbles ranging in size from micrometers to nanometers. The high pressure generated by the explosive expansion mixes the gas and water, rapidly transferring them to the conical impactor 17, where they collide, forming micro- and nano-bubble water. After the explosion, the hydrogen and oxygen within the explosion reaction chamber 14 react to produce water, creating a negative pressure within the chamber. Under this negative pressure, the water re-enters the chamber 14, exchanging and mixing the water inside and outside the chamber 14, resulting in the formation of micro- and nano-bubble water throughout the pressure-resistant liquid storage tank 22.

[0022] Explosions can be generated repeatedly in the explosion reaction chamber 14. In this embodiment, 20 explosions are repeated, and abundant nano-sized bubble water is gradually formed in the pressure-resistant liquid storage tank 22. The gas escaping from the bubble water in the pressure-resistant liquid storage tank 22 can be discharged through the exhaust valve 8.

[0023] In this embodiment, circulating cold water is introduced into the interlayer cavity 5 on the side wall of the pressure-resistant liquid storage tank 22 to absorb and utilize the heat energy generated by the explosion.

[0024] The underwater explosion theoretical calculation of the explosion reaction chamber 14 of this embodiment is as follows.

[0025] In this embodiment, the pressure-resistant liquid storage tank 22 holds 1 ton of water. The explosion reaction chamber 14 is constructed of mild steel, has a volume of 5 liters, an internal radius of 10 cm, and an internal height of 15.9 cm. The lower end of the explosion reaction chamber 14 is located 0.5 m below the water surface. The hydrogen and oxygen concentrations are set to 75% hydrogen and 25% oxygen, respectively. The single flow rate of the hydrogen and oxygen mixture is 4 liters. The wall thickness and material of the mixed gas pipeline and the water tank are the same as those of the explosion reaction chamber 14. Mild steel (yield strength ≈ 250 MPa) is used, with a safety factor of 6 (referring to a static conservative design), and an allowable stress of approximately 42 MPa.

[0026] The single injection volume of the hydrogen-oxygen mixture is 4L. Because the designed hydrogen-oxygen ratio is greater than 2 / 1, residual hydrogen will remain after the explosion. Therefore, the explosive yield of the hydrogen-oxygen explosion is less than the theoretical explosive yield of 8.1 grams of TNT for a complete hydrogen-oxygen reaction. This theoretical explosive yield of 8.1 grams of TNT is calculated based on a complete hydrogen-oxygen reaction at a 2 / 1 ratio, with each mole of H2 burning releasing 285.8 kJ of energy.

[0027] The theoretical explosive yield of 8.1 g of TNT at standard energy (STP, 0°C, 1 atm) of 4 liters of H2 / O2 (2:1) gas mixture is calculated as follows: 1 mol of gas has a volume of ≈22.4 L. The molar amount of hydrogen in 4 L of mixed gas is: (4 / 22.4)×2 / 3≈0.119 mol, and the energy generated is: 0.119 molH2×285.8 kJ / mol≈34.0 kJ, 1 gram of TNT ≈ 4.184 kJ, The energy of 4 liters of H2 / O2 (2:1) mixed gas = 34.0 kJ / 4.184 kJ ≈ 8.1 grams of TNT.

[0028] The theoretical explosion equivalent of a complete reaction of 4L of hydrogen-oxygen mixture is 8.1 grams of TNT. However, the actual designed explosion process results in excessive hydrogen and incomplete combustion, resulting in an explosion equivalent less than the theoretical explosion equivalent of a complete explosion. Based on the theoretical explosion equivalent, the wall thickness t of the explosion reaction chamber 14 is calculated as follows: The calculation formula of underwater explosion shock wave pressure is: P=K(W1 / 3 / r)×α, P: Designed underwater explosion shock wave pressure (MPa), W: explosive equivalent (usually expressed in TNT equivalent, 1kgTNT≈4.184*106J); r: distance from the explosion center (m), K, α: empirical constants (for TNT, K ≈ 52.4 × 106, α ≈ 1.13); The explosion equivalent is 0.0081kg TNT, r=0.5m (the depth of the explosion reaction chamber is 14 meters underwater). P=52.4×106(0.0081 1 / 3 / 0.5)×1.13≈18.92*106pa=18.92Mpa; According to the wall thickness formula of cylindrical pressure shell: t=P×Di / (2σ×Φ-P)+C, Di: inner diameter (diameter) mm, σ: allowable stress of material (MPa, check standard), Φ: weld coefficient (0.6~1.0, 1.0 if no weld), C: Corrosion allowance (mm). The corrosion allowance for low carbon steel is 1mm based on a 10-year design (the corrosion allowance for one year in water is 0.1mm). Then t=18.92*(100*2) / (2*42*1-18.92)+1≈59.2mm=5.92cm.

[0029] Therefore, the explosion reaction chamber 14 of this embodiment is made of low-carbon steel with a thickness of 59.2 mm (5.92 cm) (excluding the interlayer cavity 5, at least the thickness of the inner wall of the explosion reaction chamber 14). Example 2

[0030] The system of this embodiment is substantially the same as that of Example 1, except that: 1) the pressure-resistant liquid storage tank 22 of this embodiment has a water capacity of 3 tons; 2) the explosion reaction chamber is made of high-strength steel Q345R, has a volume of 10 L, an internal radius of 15 cm, and an internal height of 14.15 cm, and the lower end of the explosion reaction chamber 14 is located 1 m below the water surface; 3) the hydrogen and oxygen concentrations are set to 68% hydrogen and 32% oxygen, respectively, with a single hydrogen and oxygen injection volume of 8 L; and 4) 35 explosions are repeatedly performed in the explosion reaction chamber 14 of this embodiment.

[0031] The theoretical calculation of underwater explosion design of the explosion reaction chamber 14 of this embodiment is the same as that of the embodiment 1, and the calculation process will not be repeated.

[0032] The corrosion allowance for high-strength steel Q345R is designed to be 1 mm for 10 years (the corrosion allowance for one year in water is designed to be 0.1 mm). High-strength steel Q345R (yield strength ≈ 345 MPa) has a safety factor of 4 (referring to industrial explosion-proof application requirements) and an allowable stress of 86 MPa. A single injection of 8 L of hydrogen and oxygen produces an explosive kinetic energy equivalent less than the theoretical explosive equivalent of 16.2 grams of TNT.

[0033] The wall thickness of the explosion reaction chamber 14 in this embodiment is t≈22.4 mm=2.24 cm Therefore, in this embodiment, the explosion reaction chamber 14 is made of high-strength steel Q345R with a thickness of 22.4 mm (2.24 cm) (excluding the interlayer chamber 5 , at least the thickness of the inner wall of the explosion reaction chamber 14 ).

[0034] The method of this embodiment is the same as that of embodiment 1 and will not be described in detail. Example 3

[0035] The system of this embodiment is basically the same as that of Example 1, except that: 1) the water capacity of the pressure-resistant liquid storage tank 22 of this embodiment is 8 tons; 2) the material of the explosion reaction chamber is titanium alloy (Ti-6Al-4V), with a volume of 15 L, an internal radius of 20 cm, and an internal height of 11.94 cm. The lower end of the explosion reaction chamber 14 is located 1 m below the water surface; 3) the hydrogen and oxygen concentrations are set to 71% hydrogen and 29% oxygen, respectively, and the single hydrogen and oxygen injection volume is 12 L; 4) 40 explosions are repeatedly performed in the explosion reaction chamber 14 of this embodiment.

[0036] The theoretical calculation of underwater explosion design of the explosion reaction chamber 14 of this embodiment is the same as that of the embodiment 1, and the calculation process will not be repeated.

[0037] Titanium alloy (Ti-6Al-4V) (yield strength ≈ 830 MPa, a high-strength material), safety factor of 5 (refer to industrial explosion-proof application requirements), allowable stress 166 MPa. The corrosion allowance of titanium alloy (Ti-6Al-4V) is 1mm based on a 10-year design (the corrosion allowance for one year in water is 0.1mm). The single injection volume of hydrogen and oxygen is 12L, and the explosion kinetic energy equivalent produced is less than the theoretical explosion equivalent of 24.3 grams of TNT.

[0038] The wall thickness of the explosion reaction chamber 14 in this embodiment is t≈8.20 mm. Therefore, the explosion reaction chamber 14 is made of titanium alloy (Ti-6Al-4V) with a thickness of 8.20 mm (excluding the interlayer chamber 5, at least the thickness of the single layer inner wall of the explosion reaction chamber 14).

[0039] The method of this embodiment is the same as that of embodiment 1 and will not be described in detail. Example 4

[0040] The system of this embodiment is substantially the same as that of Example 1, except that: 1) the pressure-resistant liquid storage tank 22 of this embodiment has a water capacity of 10 tons; 2) the explosion reaction chamber is made of maraging steel (18Ni-300), has a volume of 25 L, an internal radius of 25 cm, and an internal height of 12.74 cm, and the lower end of the explosion reaction chamber 14 is located 3 m below the water surface; 3) the hydrogen and oxygen concentrations are set to 73% hydrogen and 27% oxygen, respectively, with a single hydrogen and oxygen injection volume of 20 L; and 4) 50 explosions are repeated within the explosion reaction chamber 14 of this embodiment.

[0041] The theoretical calculation of underwater explosion design of the explosion reaction chamber 14 of this embodiment is the same as that of the embodiment 1, and the calculation process will not be repeated.

[0042] The corrosion allowance of maraging steel (18Ni-300) is designed to be 1mm for 10 years (the corrosion allowance for one year in water is 0.1mm). For maraging steel (18Ni-300) (yield strength ≈ 2000 MPa, it is a high-strength composite material), the safety factor is 5 (refer to the requirements of industrial explosion-proof applications), and the allowable stress is 400 MPa.

[0043] The single injection volume of hydrogen and oxygen is 20L, and the explosion kinetic energy equivalent produced is less than the theoretical explosion equivalent of 40.5 grams of TNT.

[0044] The wall thickness of the explosion reaction chamber 14 in this embodiment is t≈3.65 mm. Therefore, in this embodiment, the explosion reaction chamber 14 is made of maraging steel (18Ni-300) with a thickness of 3.65 mm (excluding the interlayer chamber 5, at least the thickness of the inner wall of the explosion reaction chamber 14).

[0045] The method of this embodiment is the same as that of embodiment 1 and will not be described in detail.

[0046] The water samples prepared in the above four embodiments were analyzed by a particle tracer (manufactured by Malvern Panalytical Ltd., model Nanosight Pro) to obtain the particle size distribution curves as shown below: Figure 3-6 As shown, according to Figure 3-6 The spectrum data are shown in Table 1 below.

[0047] Table 1 Name Project Example 1 Example 2 Example 3 Example 4 Average particle size (nm) 121.4 128.0 121.3 124.9 Number of hydrogen bubbles (per ml of water) <![CDATA[7.99*10 7 ]]> <![CDATA[1.54*10 8 ]]> <![CDATA[3.70*10 8 ]]> <![CDATA[3.76*10 8 ]]> According to Table 1, the number of bubbles is proportional to the number of explosions.

[0048] The above description is only a preferred embodiment of the present invention, but the present invention is not limited thereto. For example, in the above four embodiments, the pressure-resistant liquid storage tank 2 is filled with water, but other liquids can obviously be filled therein. All equivalent replacements or equivalent changes based on the concepts and technical solutions of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A system for generating nano hydrogen bubble liquid, characterized by: It includes a pressure-resistant liquid storage tank, an air source control unit and a control module, the air source control unit includes a hydrogen source, an oxygen source, a hydrogen regulating valve, an oxygen regulating valve, a hydrogen concentration tester and a check valve, an explosion reaction chamber and a conical impactor are provided in the pressure-resistant liquid storage tank, the liquid in the pressure-resistant liquid storage tank covers the top of the explosion reaction chamber and does not fill the entire volume of the pressure-resistant liquid storage tank, the explosion reaction chamber is fixed by a fixing bracket fixed to the top wall of the pressure-resistant liquid storage tank and is located in the middle of the pressure-resistant liquid storage tank, the bottom of the explosion reaction chamber is open to the downward side and the other facing sides are closed, the conical impactor is fixed to the bottom of the pressure-resistant water storage tank and is located directly below the explosion reaction chamber, the conical impact surface of the conical impactor is open to the downward side of the explosion reaction chamber, the outlet of the hydrogen source is provided with a hydrogen one-way switch valve, the outlet of the oxygen source is provided with a An oxygen one-way switch valve, the hydrogen one-way switch valve is connected to the hydrogen regulating valve through a hydrogen pipeline, the oxygen one-way switch valve is connected to the oxygen regulating valve through an oxygen pipeline, a hydrogen flowmeter is provided on the hydrogen pipeline, and an oxygen flowmeter is provided on the oxygen pipeline; the gas outlets of the hydrogen source and the oxygen source are respectively connected to the inlet of the hydrogen concentration tester through the hydrogen pipeline and the oxygen pipeline, the outlet of the hydrogen concentration tester is connected to the inlet of the check valve, the outlet of the check valve is connected to the interface on the top of the explosion reaction chamber through a closed mixing pipeline that penetrates into the pressure-resistant liquid storage tank, an electric spark needle is provided in the explosion reaction chamber, the control module is connected to the electric spark needle through an electric wire that penetrates into the pressure-resistant liquid storage tank, an electronic flowmeter and an electronic switch valve are provided on the mixing pipeline, and the electronic flowmeter and the electronic switch valve are electrically connected to the control module.

2. The system according to claim 1, characterized in that: Before using the system, the hydrogen regulating valve and the oxygen regulating valve are continuously adjusted so that the hydrogen concentration in the hydrogen-oxygen mixed gas measured by the hydrogen concentration tester reaches 66.7-75%, and the molar volume ratio of hydrogen to oxygen is greater than 2.

3. The system according to claim 1, characterized in that: When the system is in use, the hydrogen regulating valve and the oxygen regulating valve are opened, and the hydrogen-oxygen mixed gas is discharged into the explosion reaction chamber from the interface at the top of the explosion reaction chamber and compresses the liquid in the explosion reaction chamber to be discharged toward the bottom opening of the explosion reaction chamber. The hydrogen-oxygen mixed gas fills and is sealed in the explosion reaction chamber, and the control module controls the electric spark needle in the explosion reaction chamber to ignite and form an explosion in the explosion reaction chamber.

4. The system according to claim 1, characterized in that: A one-way valve is provided at the interface on the top of the explosion reaction chamber, and the inlet of the one-way valve is connected to the gas mixing pipeline.

5. The system according to claim 1, characterized in that: The side wall of the pressure-resistant liquid storage tank is provided with an interlayer cavity and a circulation inlet and a circulation outlet communicating with the interlayer cavity. Cooling liquid is provided in the interlayer cavity. The circulation inlet and circulation outlet are respectively connected to the outlet and inlet of a circulation pump through a circulation pipeline.

6. A method for generating nano hydrogen bubble liquid according to the system of claim 1, comprising the following steps: 1) Add water Open the valve and add water into the pressure-resistant liquid storage tank through the liquid adding pipe. Stop adding water when the liquid level gauge shows the specified liquid level. 2) Hydrogen and oxygen mixing debugging Open the hydrogen one-way switch valve and the hydrogen regulating valve, and at the same time open the oxygen one-way switch valve and the oxygen regulating valve, and continuously adjust the hydrogen regulating valve and the oxygen regulating valve. At the same time, check the hydrogen concentration value of the hydrogen concentration tester and the flow values ​​of the hydrogen flow meter and the oxygen flow meter until the ratio of the hydrogen outlet flow rate to the oxygen outlet flow rate is greater than 2 and the hydrogen concentration in the hydrogen-oxygen mixed gas reaches 66.7-75%; 3) Introduce hydrogen and oxygen mixture into the explosion reaction chamber The control module controls the opening of the electronic switch valve to pass the hydrogen-oxygen mixed gas into the explosion reaction chamber through the mixed gas pipe. The amount of the hydrogen-oxygen mixed gas introduced is controlled according to the signal fed back to the control module by the electronic flow meter. The hydrogen-oxygen mixed gas introduced into the explosion reaction chamber first uses the pressure to discharge the water in the explosion reaction chamber toward the downward opening at the bottom of the explosion reaction chamber, thereby forming a closed cavity in the explosion reaction chamber. The hydrogen-oxygen mixed gas fills and is enclosed in the explosion reaction chamber 14. 4) Explosion The control module controls the electric spark needle in the explosion reaction chamber to ignite and form an explosion in the explosion reaction chamber.

7. The method according to claim 6, characterized in that: The explosion in step 4) can be repeated multiple times.

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