Novel energy supply device with biocatalysis as core technology

Abstract

The utility model relates to the technical field of robot energy supply, in particular to a novel energy supply device and method with biocatalysis as the core technology, which comprises a fuel injection pump, a hydroquinone fuel chamber, an oxidase catalyst bed, a hydrogen peroxide fuel chamber, a hydrogen peroxide concentration sensor and a catalase catalyst bed. The fuel injection pump is connected with the hydroquinone fuel chamber, the hydroquinone fuel chamber is connected with the oxidase catalyst bed, the oxidase catalyst bed is connected with the hydrogen peroxide fuel chamber, the hydrogen peroxide fuel chamber is connected with the hydrogen peroxide concentration sensor, and the hydrogen peroxide concentration sensor is connected with the catalase catalyst. A pulse type two-stage pressure system is designed by referring to the pressurization effect achieved by a gas step A two-stage chamber structure, so that the pressure of a fuel chamber and the loss of system throttling are reduced. The construction of the novel energy supply mode solves the original problems of noise, efficiency, environmental pollution and the like, and promotes the progress of science and technology.

Description

Technical Field

[0001] The utility model relates to the technical field of robot energy supply, in particular to a novel energy supply device with biocatalysis as the core technology. Background Art

[0002] In 2002, Professor Goldfarb first applied hydrogen peroxide to the robot power system, verifying the theoretical and technical feasibility of replacing the battery-motor power system in the field of robotics. In order to improve the endurance of exoskeleton robots, the Energy System Design and Control Laboratory of Vanderbilt University in the United States proposed a lightweight pneumatic drive system based on liquid monopropellant. Vanderbilt University researchers took comprehensive measures to improve control efficiency, reduce system weight, and reduce heat loss to further improve the energy characteristics of the power system. Exoskeleton robots for people with disabilities require personalized, simple, lightweight, and reliable structures, especially wearable ones require good human-machine functionality and comfort. The Biomedical Robotics and Bio-Microsystems Laboratory of the University of Rome Biomedicine in Italy has developed a mechanical feedback air supply unit using hydrogen peroxide decomposition, which can meet the energy needs of human indoor activities for a day. In order to make it suitable for oxygen-free environments such as underwater space and outer space, the Human Engineering and Robotics Laboratory of the University of California, Berkeley, has developed a free piston pump driven by hydrogen peroxide decomposition. Related research has also been carried out in China. Tsinghua University Shenzhen Graduate School and Zhejiang University cooperated to conduct the feasibility study of monopropellant engines in China in 2004, and developed a prototype of a monopropellant pendulum engine fueled by high-concentration hydrogen peroxide in 2005. However, the above engineering exploration cannot avoid the safety problem of high-concentration hydrogen peroxide being flammable, explosive and easy to decompose. It is urgent to ensure the safety of hydrogen peroxide storage. No research papers, documents or patents in this regard have been reported.

[0003] In view of the above-mentioned defects, the inventor of the present invention finally obtained the present invention after a long period of research and practice. Summary of the invention

[0004] The utility model aims to solve the safety problem of high-concentration hydrogen peroxide being flammable, explosive and easy to decompose when hydrogen peroxide is used for robot energy supply, and provides a new energy supply device with biocatalysis as the core technology.

[0005] In order to achieve the above-mentioned purpose, the utility model discloses a novel energy supply device with biocatalysis as the core technology, comprising a hydrogen peroxide liquid supply system, a gas supply system and a product reflux system, wherein the hydrogen peroxide liquid supply system comprises a fuel injection pump, a hydroquinone fuel chamber, and an oxidase catalyst bed, wherein the fuel injection pump is connected to the hydroquinone fuel chamber, and the oxidase catalyst bed is connected to the hydroquinone fuel chamber, wherein the gas supply system comprises a hydrogen peroxide fuel chamber, a hydrogen peroxide concentration sensor, and a catalase catalyst bed, wherein the hydrogen peroxide fuel chamber is connected to the oxidase catalyst bed, and the catalase catalyst bed is connected to the hydrogen peroxide fuel chamber, wherein the hydrogen peroxide concentration sensor is arranged between the catalase catalyst bed and the hydrogen peroxide fuel chamber, and wherein the product reflux system comprises a reflux pipeline, and wherein the reflux pipeline refluxes the product to the hydroquinone fuel chamber.

[0006] A pressure gauge is provided at the hydroquinone fuel chamber.

[0007] The oxidase catalyst bed and the catalase catalyst bed are both microchannel network structures.

[0008] A first stop valve and a first proportional throttle valve are provided between the hydroquinone fuel chamber and the oxidase catalyst bed, a second stop valve is provided between the hydrogen peroxide fuel chamber and the hydrogen peroxide concentration sensor, a third stop valve is provided between the hydrogen peroxide concentration sensor and the oxidase catalyst bed, and a fourth stop valve and a second proportional throttle valve are provided between the hydrogen peroxide concentration sensor and the catalase catalyst bed.

[0009] The catalase catalyst bed is connected to a load, and an air motor and a PTFE membrane are arranged in sequence between the load and the catalase catalyst bed; the PTFE membrane blocks the solution from entering the load, causing a safety hazard, and the air motor converts the gas pressure into mechanical energy according to the gas output rate.

[0010] A high-pressure one-way valve is provided between the catalase catalyst bed and the PTFE membrane, and a low-pressure one-way valve is provided between the catalase catalyst bed and the second proportional throttle valve.

[0011] The pneumatic motor is connected to a rotation speed sensor, which is also connected to the second proportional throttle valve, and the gas output rate is monitored according to the second proportional throttle valve.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model imitates the unique synthesis and decomposition process of hydrogen peroxide in the body of the gastropod beetle to realize the construction of a new energy supply system with high power density, high energy density and environmentally friendly characteristics;

[0014] 2. The utility model imitates the biological functional structure and defense mechanism of the gas beetle and designs a pulsed two-stage pressure system to reduce the fuel chamber pressure and system throttling loss;

[0015] 3. The catalyst bed is made by using metal oxides as mesoporous materials, which can adsorb catalase in a chemically bonded manner and promote the synthesis and decomposition of hydrogen peroxide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Design and reaction flow chart for pulse cascade booster system;

[0017] Figure 2 The ring-opening mechanism of hydroquinone catalyzed by oxidase.

[0018] The numbers in the figure represent:

[0019] 1-hydroquinone fuel chamber; 2-fuel injection pump; 3-pressure gauge; 4-first stop valve; 5-first proportional throttle valve; 6-pump; 7-hydrogen peroxide fuel chamber; 8-low-pressure one-way valve; 9-speed sensor; 10-high-pressure one-way valve; 11-PTFE membrane; 12-pneumatic motor; 13-load; 14-second stop valve; 15-third stop valve; 16-fourth stop valve; 17-second proportional throttle valve; 18-oxidase catalyst bed; 19-hydrogen peroxide concentration sensor; 20-catalase catalyst bed. DETAILED DESCRIPTION

[0020] The above and other technical features and advantages of the present invention are described in more detail below in conjunction with the accompanying drawings.

[0021] like Figure 1 As shown, a novel energy supply device with biocatalysis as the core technology includes a hydrogen peroxide liquid supply system, a gas supply system and a product reflux system, wherein the hydrogen peroxide liquid supply system includes a fuel injection pump 2, a hydroquinone fuel chamber 1, and an oxidase catalyst bed 18, wherein the fuel injection pump 2 is connected to the hydroquinone fuel chamber 1, and the oxidase catalyst bed 18 is connected to the hydroquinone fuel chamber 1; the gas supply system includes a hydrogen peroxide fuel chamber 7, a hydrogen peroxide concentration sensor 19, and a catalase catalyst bed 20, wherein the hydrogen peroxide fuel chamber 7 is connected to the oxidase catalyst bed 18, and the catalase catalyst bed 20 is connected to the hydrogen peroxide fuel chamber 7, wherein the hydrogen peroxide concentration sensor 19 is disposed between the catalase catalyst bed 20 and the hydrogen peroxide fuel chamber 7; and the product reflux system includes a reflux pipe, and the reflux pipe refluxes the product to the hydroquinone fuel chamber 1.

[0022] The hydroquinone fuel chamber 1 is provided with a pressure gauge 3 .

[0023] The oxidase catalyst bed 18 and the catalase catalyst bed 20 are both microchannel network structures.

[0024] A first stop valve 4 and a first proportional throttle valve 5 are provided between the hydroquinone fuel chamber 1 and the oxidase catalyst bed 18, a second stop valve 14 is provided between the hydrogen peroxide fuel chamber 7 and the hydrogen peroxide concentration sensor 19, a third stop valve 15 is provided between the hydrogen peroxide concentration sensor and the oxidase catalyst bed 18, and a fourth stop valve 16 and a second proportional throttle valve 17 are provided between the hydrogen peroxide concentration sensor 19 and the catalase catalyst bed 20.

[0025] The catalase catalyst bed 20 is connected to a load 13, and an air motor 12 and a PTFE membrane 11 are sequentially arranged between the load 13 and the catalase catalyst bed 20; the PTFE membrane 11 blocks the solution from entering the load, causing a safety hazard, and the air motor 12 converts the gas pressure into mechanical energy according to the gas output rate.

[0026] A high-pressure one-way valve 10 is provided between the catalase catalyst bed 20 and the PTFE membrane 11 , and a low-pressure one-way valve 8 is provided between the catalase catalyst bed 20 and the second proportional throttle valve 17 .

[0027] The pneumatic motor 12 is connected to a rotation speed sensor 9 , and the rotation speed sensor 9 is also connected to the second proportional throttle valve 17 , and the gas production rate is monitored according to the second proportional throttle valve 17 .

[0028] The energy flow process of the hydrogen peroxide liquid supply system is that hydroquinone flows through the stop valve and flows to the catalyst bed under the regulation of the proportional throttle valve. Hydrogen peroxide can be generated in the aqueous phase under the catalysis of the oxidase modified by polyethylene glycol supported by the metal mesoporous material. Hydrogen peroxide enters the internal circulation and passes through the oxidase catalyst bed, the hydrogen peroxide fuel chamber, the hydrogen peroxide concentration sensor, and the oxidase catalyst bed in sequence. When the concentration detected by the hydrogen peroxide concentration sensor is higher than the threshold value, it flows to the hydrogen peroxide chamber for storage until the concentration indicated by the hydrogen peroxide concentration sensor reaches 8.6 mol / L (i.e., 20% hydrogen peroxide concentration).

[0029] The energy flow process of the gas supply system is that when hydrogen peroxide passes through the stop valve and is regulated by the proportional throttle valve to flow to the next catalyst bed (polyethylene glycol-modified catalase supported by metal mesoporous materials), hydrogen peroxide changes from liquid phase to gas phase under the action of the catalyst, and its decomposition process is a typical exothermic reaction. The condensing device outside the catalyst bed turns water vapor into liquid and absorbs the heat released by the decomposition of hydrogen peroxide. The generated oxygen pushes the actuator to do work outward through the fluid control element, and the energy is converted from chemical energy to mechanical energy.

[0030] The energy flow process of the product reflux system is that the remaining products (water and hydroquinone) flow into hydroquinone. Since hydroquinone has strong reducing properties, it directly leads to the conversion of hydroquinone into hydroquinone. When flowing through the oxidase catalyst bed, the metal material can act as a promoter to make the above reaction proceed more fully, and then hydroquinone and water will continue to participate in the circulation as reactants.

[0031] The generation of benzoquinone from hydroquinone and its reverse reaction are a form of oscillation reaction; in addition to the generation of benzoquinone, the forward reaction also generates p-hydroxycatechol, which then opens the ring to generate carbon-centered free radicals; therefore, the first step is to establish a catalytic reaction mechanism verification model for the oxidase / metal material / polyethylene glycol composite to ensure the feasibility of engineering.

[0032] like Figure 2 As shown, in the first reaction stage, 17 O isotope labeling tracking method found that water directly participated in the hydroquinone addition reaction and released 17 O-labeled hydroxyl radicals (· 17 OH). Therefore, oxidase has the ability to generate hydroxyl radicals through free radicals and water. Hydroxyl radicals can form hydrogen peroxide in aqueous solution. Hydroquinone is used as a substrate, and metal oxide mesoporous materials are used as modified enzyme support materials and oscillating reaction promoters to synthesize hydrogen peroxide under the catalytic oxidation of oxidase. In stage two, the reaction product flow is recovered to the cavity of hydroquinone through the catalase catalyst bed, and the hydroquinone in the cavity can be directly reduced to hydroquinone and continued to be used as a raw material.

[0033] The microchannel network in organisms is a fractal tree-like geometric structure that contains a large number of microfluidic channels of varying sizes and numbers. By imitating the microchannel network structure in insects and designing a microchannel network-like catalyst bed, it can promote uniform distribution of fluids and reduce flow resistance.

[0034] In view of the shortcomings of the traditional manganese-based support type, the catalytic process of biological enzymes in the reaction chamber of the gaseous ground beetle is simulated, metal oxides are used as mesoporous materials, and oxidases and catalases are modified to enhance the tolerance of oxidases and catalases in extreme environments such as high temperature and different pH values, as well as the ability to resist hydrogen peroxide. Metal oxides can be chemically combined with the modified oxidases and catalases to achieve the immobilization of oxidases and catalases, and the efficient synthesis and catalytic decomposition of hydrogen peroxide, so as to ensure the durability and stability of the catalytic process.

[0035] like Figure 1As shown, when the volume of hydrogen peroxide is lower than the threshold, the first stop valve 4 is opened, and the first proportional throttle valve 5 adjusts the flow rate. When the output flow rate of hydroquinone reaches a certain amount, the first stop valve 4 is closed. Then the hydroquinone solution enters the internal circulation, the second stop valve 14 and the third stop valve 15 are opened, and the internal circulation path is the oxidase catalyst bed, the hydrogen peroxide fuel chamber 7, the second stop valve 14, the hydrogen peroxide concentration sensor, the third stop valve 15, and the oxidase catalyst bed. When the concentration detected by the hydrogen peroxide concentration sensor is the set value, the internal circulation stops, and the second stop valve 14 and the third stop valve 15 are closed. When the gas in the gas storage cavity feedback gas cavity is lower than the threshold, the second stop valve 14 and the fourth stop valve 16 are opened, and the hydrogen peroxide solution passes through the stop valve, and the flow rate is adjusted by the second proportional throttle valve 17 to flow into the catalase catalyst bed for reaction. When the gas pressure is higher than the set value, the high-pressure one-way valve opens, and the reaction product flows out. The PTFE air filter membrane can prevent liquid from passing through, and the gas is output to the pneumatic motor through the PTFE membrane. The pneumatic motor adjusts the gas output according to the second proportional throttle valve 17 to enter the air storage chamber, and the remaining products (water and hydroquinone) flow back to the hydroquinone fuel chamber for reuse.

[0036] After the stop valve is opened, the opening pressures of the low-pressure check valve 8 and the high-pressure check valve 10 are set to 0.05 and 1.5 MPa respectively; the hydrogen peroxide entering the catalyst bed reacts violently under the catalysis of catalase to release oxygen and water vapor, the pressure in the reaction chamber rises rapidly, and the low-pressure check valve 8 is closed; as the catalytic reaction continues, the pressure in the reaction chamber increases further, and when it exceeds the opening pressure of the high-pressure check valve 10, the check valve opens and the high-pressure gas is ejected outward; when the pressure in the reaction chamber drops below 1 MPa, the low-pressure check valve 8 opens again, and the cycle continues, producing a continuous pulse injection effect. The system output power is adjusted by the throttle valve.

[0037] The above is only a preferred embodiment of the utility model, which is only illustrative and not restrictive. Those skilled in the art understand that many changes, modifications, and even equivalences can be made within the spirit and scope defined by the claims of the utility model, but they will all fall within the scope of protection of the utility model.

Claims

1. A new energy supply device with biocatalysis as the core technology, characterized in that: The invention comprises a hydrogen peroxide liquid supply system, a gas supply system and a product reflux system, wherein the hydrogen peroxide liquid supply system comprises a fuel injection pump, a hydroquinone fuel chamber and an oxidase catalyst bed, wherein the fuel injection pump is connected to the hydroquinone fuel chamber, and the oxidase catalyst bed is connected to the hydroquinone fuel chamber, wherein the gas supply system comprises a hydrogen peroxide fuel chamber, a hydrogen peroxide concentration sensor and a catalase catalyst bed, wherein the hydrogen peroxide fuel chamber is connected to the oxidase catalyst bed, and the catalase catalyst bed is connected to the hydrogen peroxide fuel chamber, wherein the hydrogen peroxide concentration sensor is arranged between the catalase catalyst bed and the hydrogen peroxide fuel chamber, and wherein the product reflux system comprises a reflux pipe, and wherein the reflux pipe refluxes the product to the hydroquinone fuel chamber.

2. A novel energy supply device with biocatalysis as the core technology as claimed in claim 1, characterized in that: A pressure gauge is provided at the hydroquinone fuel chamber.

3. A novel energy supply device with biocatalysis as the core technology as claimed in claim 1, characterized in that: The oxidase catalyst bed and the catalase catalyst bed are both microchannel network structures.

4. A novel energy supply device with biocatalysis as the core technology as claimed in claim 1, characterized in that: A first stop valve and a first proportional throttle valve are provided between the hydroquinone fuel chamber and the oxidase catalyst bed, a second stop valve is provided between the hydrogen peroxide fuel chamber and the hydrogen peroxide concentration sensor, a third stop valve is provided between the hydrogen peroxide concentration sensor and the oxidase catalyst bed, and a fourth stop valve and a second proportional throttle valve are provided between the hydrogen peroxide concentration sensor and the catalase catalyst bed.

5. A novel energy supply device with biocatalysis as the core technology as claimed in claim 4, characterized in that: The catalase catalyst bed is connected with a load, and a pneumatic motor and a PTFE membrane are sequentially arranged between the load and the catalase catalyst bed.

6. A novel energy supply device with biocatalysis as the core technology as claimed in claim 5, characterized in that: A high-pressure one-way valve is provided between the catalase catalyst bed and the PTFE membrane, and a low-pressure one-way valve is provided between the catalase catalyst bed and the second proportional throttle valve.

7. A novel energy supply device with biocatalysis as the core technology as claimed in claim 5, characterized in that: The pneumatic motor is connected to a rotation speed sensor, and the rotation speed sensor is also connected to the second proportional throttle valve.

Images