CN110619792A - Portable fuel cell teaching instrument - Google Patents

Abstract

The invention relates to a portable fuel cell teaching instrument, which comprises a heat preservation chamber, a fuel cell tube, a reforming catalyst, a heating device, a temperature sensor, a control board group, a feed assembly and a load; the fuel cell pipe is installed in the heat preservation chamber ; The reforming catalyst is arranged on the inner wall of the fuel cell tube inlet; the heating tube is installed on the fuel cell tube; the temperature sensor is installed in the heat preservation chamber, and the control board group is electrically connected with the temperature sensor and the heating device respectively ; The inlet of the feed assembly is communicated with the low-alcohol organic solvent, and the outlet of the feed assembly is communicated with the feed inlet of the fuel cell tube; the positive pole of the load is electrically connected with the positive output end of the fuel cell tube, and the negative pole of the load It is electrically connected with the negative output terminal of the fuel cell tube. It has the advantages of no need to disassemble and assemble teaching instruments when changing the site, easy to use and carry, good teaching effect, low-alcohol organic solvent as fuel, and low fuel price.

Description

Portable Fuel Cell Teaching Instrument

technical field

The invention relates to a portable fuel cell teaching instrument.

Background technique

At present, the SOFC fuel cell teaching instrument is bulky; when in use, the SOFC fuel cell teaching instrument cannot be carried. If the teaching site needs to be replaced, the SOFC fuel cell teaching instrument must be dismantled, and then the SOFC fuel cell teaching instrument must be assembled in the new teaching site , It takes a long time and is inconvenient to use, and disassembling and assembling the SOFC fuel cell teaching instrument will affect the service life and use effect of the SOFC fuel cell teaching instrument and affect teaching.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a portable fuel cell teaching instrument, which can be carried around without disassembling the teaching instrument, easy to operate, good teaching effect, and the fuel is a low-alcohol organic solvent, and the fuel price is cheap .

In order to achieve the above object, the present invention is achieved in that it is a portable fuel cell teaching instrument, which is characterized in that it includes:

an insulation chamber and a fuel cell tube; the fuel cell tube is installed in the insulation chamber;

reforming catalyst; the reforming catalyst is arranged on the inner wall of the fuel cell tube inlet;

Heating device: the heating tube is installed on the fuel cell tube so that the temperature of the fuel cell tube at the reforming catalyst is 300°C-600°C and the temperature of other parts of the fuel cell tube is 650°C-800°C;

A temperature sensor and a control board group; the temperature sensor is installed in the heat preservation chamber so as to monitor the temperature in the heat preservation chamber, and the control board group is electrically connected to the temperature sensor and the heating device respectively;

Feed assembly; the feed port of the feed assembly communicates with the low-alcohol organic solvent, and the discharge port of the feed assembly communicates with the feed port of the fuel cell tube; and

Load; the positive pole of the load circuit is electrically connected to the positive pole output terminal of the resonator tube, and the negative pole of the load circuit is electrically connected to the negative pole output terminal of the fuel cell tube.

In this technical solution, the air intake assembly includes a funnel and a connecting pipe; one end sleeve of the connecting pipe communicates with the feed port of the fuel cell tube, and the other end of the connecting pipe communicates with the outlet of the funnel.

In this technical solution, the reforming catalyst group includes a copper-nickel bimetallic catalyst and a foamed ceramic catalyst carrier, the foamed ceramic catalyst carrier is arranged on the inner wall of the fuel cell tube inlet, and the copper-nickel bimetallic catalyst The molar ratio of nickel to copper in the copper-nickel bimetallic catalyst is 9:1-3:1 and is arranged on a foam ceramic catalyst carrier.

In this technical solution, the low-alcohol organic solvent is methanol or ethanol or dimethyl ether.

In this technical solution, the model of the single-chip microcomputer in the control board group is STM8S003, and the temperature sensor is a k-type thermocouple.

Compared with the prior art, the present invention has the following advantages: no need to disassemble the teaching instrument when changing the site, easy to use and carry, good teaching effect, low-alcohol organic solvent as the fuel, and low fuel price.

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Fig. 2 is a control principle block diagram of the present invention;

Fig. 3 is the circuit schematic diagram of control board group among the present invention;

Fig. 4 is the circuit principle diagram of heating device among the present invention;

Fig. 5 is a schematic circuit diagram of the temperature sensor in the present invention.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

As shown in Figure 1 to Figure 5, it is a portable fuel cell teaching instrument, including:

The heat preservation chamber 2 and the fuel cell tube 5; the fuel cell pipe 5 is installed in the heat preservation chamber 2;

A reforming catalyst 6; the reforming catalyst 6 is arranged on the inner wall of the fuel cell tube 5 inlet;

Heating device 4; the heating tube is installed on the fuel cell tube 5 so that the temperature of the fuel cell tube 5 at the reforming catalyst 6 is 300°C or 400°C or 500°C or 600°C and the temperature of other parts of the fuel cell tube 5 is 650°C or 700°C or 750°C or 800°C;

Temperature sensor 4 and control board group 9; The temperature sensor 10 is installed in the heat preservation chamber 2 so as to monitor the temperature in the heat preservation chamber 2, and the control board group 9 is electrically connected to the temperature sensor 4 and the heating device 4 respectively. connect. ;

Feed assembly; the feed port of the feed assembly communicates with the low-alcohol organic solvent, and the discharge port of the feed assembly communicates with the feed port of the fuel cell tube 5; and

Load 3 ; the positive pole of the circuit of the load 3 is electrically connected to the positive output terminal of the resonator tube 5 , and the negative pole of the circuit of the load 3 is electrically connected to the negative output terminal of the fuel cell tube 5 .

The length of the fuel cell tube 5 is 3-5 cm, the inner diameter of the fuel cell tube 5 is 0.3-0.5 cm; the length of the reforming catalyst 1 is 1-1.5 cm.

When working, the low-alcohol organic solvent is reformed by the reforming catalyst 6 and becomes synthesis gas containing hydrogen and carbon monoxide. The gas enters the fuel cell tube 5 and reacts to generate current. The current generated by the fuel cell tube 5 passes through the wire and the load. 3 connected.

In this embodiment, the air intake assembly includes a funnel 8 and a connecting pipe 7; one end of the connecting pipe 7 is sleeved at the feed port of the fuel cell pipe 5 and communicated, and the connecting pipe 7 is fed to the fuel cell pipe 5. The junction of the mouth is sealed and fitted, the other end of the connecting pipe 7 is sleeved at the outlet of the funnel 8 and communicated, and the other end of the connecting pipe 7 is sealed and fitted with the junction of the outlet of the funnel 8.

In this embodiment, the reforming catalyst group 6 includes a copper-nickel bimetallic catalyst and a foamed ceramic catalyst carrier, the foamed ceramic catalyst carrier is located on the inner wall of the fuel cell tube 5 inlet, and the copper-nickel bimetallic The catalyst is located on a foam ceramic catalyst carrier, and the molar ratio of nickel to copper in the copper-nickel bimetallic catalyst is 9:1-3:1;

The preparation method of described ceramic foam catalyst carrier is as follows:

Step 1, prepare the first paste ceramic slurry, including: the first pre-ceramic slurry and the first binder; the first pre-ceramic slurry includes ceramic powder, dispersant, pore-forming agent and Water; ceramic powder, dispersant, pore-forming agent and water are mixed by ball milling, and the first pre-ceramic slurry is obtained after separating the balls, and the first pre-ceramic slurry and the first binder Mixing to obtain the first paste ceramic slurry; prepare the second paste ceramic slurry, including: the second pre-ceramic slurry and the second binder; the second pre-ceramic slurry includes: ceramic powder, dispersant, pore-forming agent and water; the ceramic powder, dispersant, pore-forming agent and water are mixed by ball milling, and the second pre-ceramic slurry is obtained after separating the balls, and the second pre-ceramic slurry is Mixing with the second part of binder to obtain the second paste ceramic slurry;

Step 2. Dip the polyurethane foam into the ceramic slurry for the first slurrying, remove the excess ceramic slurry for the first slurrying on the polyurethane foam, and obtain a preformed ceramic foam. The preform is dried and solidified, and cooled to obtain a slurry foam;

Step 3. Coating the primary coating foam with the second coating ceramic slurry, and removing the redundant second coating ceramic slurry on the primary coating foam to obtain a secondary ceramic foam prefabricated body , drying the foam ceramic preform and cooling to obtain a secondary slurry foam;

Step 4. Sintering the secondary paste foam at 600-700°C for the first time, and then sintering for the second time at 1400-1600°C after the first sintering to obtain a ceramic foam catalyst carrier;

Put the ceramic foam catalyst into the inner wall of the fuel cell tube 5 inlet

The preparation method of described copper-nickel bimetallic catalyst is as follows:

Step 1, the fuel cell tube 5 is placed in a constant temperature water bath in a reaction solution of copper sulfate pentahydrate, formaldehyde, and ammonia water to obtain a hydrothermal reaction precursor;

Step 2, the hydrothermal reaction precursor obtained by the fuel cell tube 5 is fixed in a hydrothermal kettle, undergoes hydrothermal reaction to form copper oxide, and then is dried;

Step 3, placing the fuel cell tube 5 in the step 2 into a muffle furnace for calcination and oxidation;

Step 4, put the calcined fuel cell tube 5 in a tube furnace with a hydrogen atmosphere to carry out the reduction reaction, and the NiO in the fuel cell tube 5 is also reduced to Ni, so the copper foam catalyst can be obtained as a carrier. Nickel bimetallic catalyst.

In this embodiment, the low-alcohol organic solvent is methanol, ethanol or dimethyl ether, and the user can select the solvent according to actual needs.

In this embodiment, the model of the single-chip microcomputer U1 in the control board group 9 is STM8S003, and the temperature sensor 1 is a k-type thermocouple; C1 and the second capacitor C2; pin 7 of the first single-chip microcomputer U1 is electrically connected to one end of the second capacitor C2 and grounded, pin 8 of the first single-chip microcomputer U1 is grounded through the first capacitor C1, pin 9 of the first single-chip microcomputer U1 is connected to the second capacitor C2 The other end of the capacitor C2 is electrically connected to +5V DC voltage, the 16-pin of the first single-chip microcomputer U1 is electrically connected to the heating device 4, the 19-pin of the first single-chip microcomputer U1 is electrically connected to the temperature sensor 4, and the first single-chip microcomputer U1 The model is STM8S003; the heating device 4 includes a heat pipe socket J1 with two legs, a Zener diode D1, a first diode D2, a first resistor R1, a second resistor R2, a first electrolytic capacitor E1, a field The effect tube T and the second single-chip microcomputer U2 with eight pins, the first heating tube is plugged into the heating tube socket J1; the second pin of the second single-chip microcomputer U2 is connected to +5V DC voltage, and the third pin of the second single-chip microcomputer U2 The first resistor R1 is electrically connected to the 16-pin of the first single-chip microcomputer U1, the 5-pin of the second single-chip microcomputer U2 is grounded, the 8-pin of the second single-chip microcomputer U2 is electrically connected to the +12V power supply terminal, and one end of the second resistor R2 is respectively connected to the Pin 6 of the second single-chip microcomputer U2 is electrically connected to pin 7 of the second single-chip microcomputer U2. connection, the source of the field effect transistor T is grounded, the drain of the field effect transistor T is electrically connected to the first pin of the heating tube socket J1 and the anode of the first diode D2, and the second pin of the heating tube socket J1 It is electrically connected to the negative pole of the first diode D2 and connected to the +12V power supply terminal, the negative pole of the first electrolytic capacitor E1 and the negative pole of the Zener diode D1 are all grounded, and the model of the second single-chip microcomputer U2 is TLP250; The temperature sensor 1 includes a temperature-sensing plug J2 with two legs, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a third capacitor C3, a fourth capacitor C4, The fifth capacitor C5, the sixth capacitor C6, the second electrolytic capacitor E2, and the third single-chip microcomputer U3 with eight pins, the temperature-sensing probe is inserted on the temperature-sensing plug J2; 1 pin of the third single-chip microcomputer U3 is respectively connected to One end of the fifth capacitor C5, one end of the fourth capacitor C4 and one end of the fifth resistor R5 are electrically connected, the 3 pins and 4 pins of the third single-chip microcomputer U3 are all grounded, the 5 pins and 6 pins of the third single-chip microcomputer U3 are all connected to the sixth One end of resistor R6 is electrically connected, pin 7 of the third single-chip microcomputer U3 is electrically connected to the positive pole of the second electrolytic capacitor E2, one end of the sixth capacitor C6 and the +12V power supply terminal, and pin 8 of the third single-chip microcomputer U3 is respectively connected to the fourth capacitor The other end of C4, one end of the fourth resistor R4 and one end of the third capacitor C3 are electrically connected, the first pin of the temperature sensing plug J2 is electrically connected to the other end of the fifth resistor R5, and the second pin of the temperature sensing plug J2 is respectively connected to The other end of the fourth resistor R4 is electrically connected to one end of the third resistor R3 connected, the 19 pins of the first single-chip microcomputer U1 are respectively electrically connected to the other end of the sixth resistor R6 and one end of the seventh resistor R7, the other end of the fifth capacitor C5, the other end of the third capacitor C3, the sixth The other end of the capacitor C6, the other end of the third resistor R3, the other end of the seventh resistor R7 and the negative electrode of the second electrolytic capacitor E2 are all grounded, and the model of the third microcontroller U3 is BRIDGE2.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and deformations to these implementations without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention.

Claims (5)

1. A portable fuel cell teaching instrument, comprising:

a heat-insulating chamber (2) and a fuel cell tube (5); the fuel cell tube (5) is arranged in the heat-insulating chamber (2);

a reforming catalyst (6); the reforming catalyst (6) is arranged on the inner wall of the feed inlet of the fuel cell tube (5);

a heating device (4); the heating pipe is arranged on the fuel cell pipe (5) to ensure that the temperature of the fuel cell pipe (5) at the reforming catalyst (6) is 300-600 ℃ and the temperature of other parts of the fuel cell pipe (5) is 650-800 ℃;

a temperature sensor (4) and a control plate group (9); the temperature sensor (10) is arranged in the heat-preservation chamber (2) so as to monitor the temperature in the heat-preservation chamber (2), and the control plate group (9) is electrically connected with the temperature sensor (4) and the heating device (4) respectively;

a feed assembly; the feed inlet of the feeding assembly is communicated with the low-alcohol organic solvent, and the discharge outlet of the feeding assembly is communicated with the feed inlet of the fuel cell tube (5); and

a load (3); the positive pole of the load (3) is electrically connected with the positive pole output end of the fuel cell tube (5), and the negative pole of the load (3) is electrically connected with the negative pole output end of the fuel cell tube (5).

2. The portable fuel cell instructional instrument according to claim 1, wherein the air intake assembly comprises a funnel (8) and a connecting tube (7); one end of the connecting pipe (7) is communicated with the feed inlet of the fuel cell pipe (5), and the other end of the connecting pipe (7) is communicated with the outlet of the funnel (8).

3. The portable fuel cell teaching instrument of claim 1, wherein the reforming catalyst (6) comprises a copper-nickel bimetallic catalyst and a ceramic foam catalyst carrier, the ceramic foam catalyst carrier is disposed on an inner wall of the feed inlet of the fuel cell tube (5), the copper-nickel bimetallic catalyst is disposed on the ceramic foam catalyst carrier, and the molar ratio of nickel to copper in the copper-nickel bimetallic catalyst is 9: 1-3: 1.

4. the portable fuel cell teaching instrument of claim 1 wherein the low alcohol organic solvent is methanol or ethanol or dimethyl ether.

5. The teaching instrument of portable fuel cell as claimed in claim 1, wherein the type of the singlechip U1 of the control board set (9) is STM8S003, and the temperature sensor (1) is a k-type thermocouple.