CN110411218A - An integrated heating furnace with a pressurizing device - Google Patents

Abstract

The invention discloses an integrated heating furnace with a pressurizing device, which comprises a pressurizing device, a structural support body and a heating furnace. The output end of the device extends into the heating furnace. The heating furnace is provided with a support plate and a pressure plate. The fuel cell stack is arranged between the pressure plate and the support plate. The output mechanism of the pressurizing device passes through the furnace wall of the heating furnace. The output mechanism of the device, the heating furnace is provided with a passage for the reaction gas pipeline to enter the heating furnace; by setting the pressure device on the heating furnace, the pressure can be kept stable during the fuel cell stack roasting process, and can keep applying pressure to the fuel cell stack. Optimum pressure solves the problem of "settling" and sealing of the fuel cell stack during the roasting process, and can obtain the relevant performance of the fuel cell stack more accurately; and there is no need for manual operation by the operator during the entire process, thereby avoiding excessive manual operation pressure or The problem of insufficient pressure and ensure the personal safety of the operator.

Description

An integrated heating furnace with a pressurizing device

technical field

The invention belongs to the field of fuel cell sintering experiments and the field of fuel cell gas control heating, and in particular relates to an integrated heating furnace with a pressurizing device.

Background technique

Molten carbonate fuel cell (MCFC) is a clean and efficient power generation device, which can directly convert the chemical energy stored in fuel and oxidant into electrical energy through electrochemical reactions, and has high efficiency, low carbon emissions, and relatively low cost. advantages and can be widely used.

During the power generation process of the molten carbonate fuel cell, it is necessary to pressurize both ends of the battery. Generally, the screw is fastened after the battery is assembled. This method does not consider the battery "settling" problem during the battery roasting process, resulting The working pressure of the battery is not enough, resulting in insufficient sealing of the battery and air leakage, which affects the performance of the battery; the current way to compensate for the pressure is to tighten the bolts of the battery stack roasted in a high-temperature furnace, but this method will be unsafe and high temperature burns.

Contents of the invention

The invention provides an integrated heating furnace with a pressurizing device. During the roasting and working process of the stack, the pressurizing device is used to solve the problem of "settling" during the roasting process and ensure the power generation of the molten carbonate fuel cell Optimal working pressure for efficiency.

In order to achieve the above object, the technical solution adopted in the present invention is an integrated heating furnace with a pressurizing device, including a pressurizing device, a structural support body and a heating furnace, the pressurizing device is arranged on the top of the structural support body, and the heating furnace It is arranged in the middle of the structural support body. The output end of the pressurizing device extends into the heating furnace. A supporting plate and a pressing plate are arranged in the heating furnace. The fuel cell stack is arranged between the pressing plate and the supporting plate. The output mechanism of the pressing device passes through The furnace wall of the heating furnace is connected with the pressure plate to the output mechanism of the pressurizing device, and the heating furnace is provided with a channel for the reaction gas pipeline to enter the inside of the heating furnace.

The pressurizing device includes a cylinder, a gas reversing valve, a pressure regulating valve, an intake pipe and an air compression pump; the input end of the cylinder is connected to the intake pipe, and the pressure regulating valve and the gas reversing valve are sequentially arranged on the intake pipe along the flow direction of the gas. The air pipe is connected to the outlet of the air compression pump; the air cylinder is arranged on the top of the structural support body, and the free end of the piston rod of the air cylinder is connected with the pressure plate.

The pressurizing device includes a hydraulic cylinder and a hydraulic station, the free end of the piston rod of the hydraulic cylinder is connected to the pressure plate, the output end of the hydraulic station is connected to the input end of the hydraulic cylinder, and the hydraulic cylinder is arranged on the top of the structural support body.

The output mechanism of the pressurizing device is provided with a heat dissipation device, and the heat dissipation device includes a heat dissipation block and a heat dissipation fan. The output mechanism of the pressurization device passes through the center of the heat dissipation block. outside.

The shapes of the pressure plate and the support plate are the same as the cross-sectional shape of the fuel cell stack, and the area of the pressure plate and the support plate is not smaller than the cross-section of the fuel cell stack.

The heating furnace wire is arranged on the inner side wall of the heating furnace, the heating furnace wire is connected to a temperature controller, the temperature controller controls the heating power and the switch of the heating furnace wire, and the temperature controller is arranged at the lower part of the structural support body.

A thermocouple is arranged in the heating furnace, and the thermocouple is connected to the input end of the temperature controller.

A hole is opened on the furnace door of the heating furnace as a channel for the reaction gas pipeline to enter the interior of the heating furnace, and thermal insulation cotton is arranged in the opening.

The pressurizing device is provided with a pressure detection mechanism for displaying its output pressure.

The bottom of the structural support body is provided with universal wheels.

Compared with the prior art, the present invention has at least the following beneficial effects:

By installing a pressurizing device on the heating furnace, the pressure can be kept stable during the fuel cell stack roasting process, and pressure can be applied to the fuel cell stack, which solves the sealing problem caused by the "settlement" and "settlement" of the fuel cell stack during the roasting process As a result, the battery can obtain the relevant performance of the fuel cell stack more accurately; after the fuel cell stack is sintered, after the organic matter in the electrolyte diaphragm and the anode and cathode sealing frames are all volatilized, there will be gaps between the components, and the battery stack is under its own weight. Subsidence will occur under the action, and the device described in this application continuously provides pressure for the fuel cell stack to solve the problem of air leakage of the cell stack; and in the whole process, no manual operation by the operator is required, thereby avoiding excessive manual operation pressure or pressure Insufficient problems and ensure the personal safety of operators.

Further, the pressurization device adopts a cylinder, the pneumatic pressurization response is quick, and the pneumatic load capacity is generally below 1KPa. For low-power fuel cell experiments, the control connection of the pneumatic pressurization device is relatively simple, and it is generally connected by a quick-connect plug, which is convenient for maintenance. , usually using centralized gas supply, low cost of use and other advantages.

Further, the pressurizing device adopts an oil cylinder, and the carrying capacity of the hydraulic pressurization is larger than that of the starting pressurization. The hydraulic pressure is generally used below 30KPa, and the large driving force can meet the pressurization requirements of the high-power fuel cell stack. Compared with pneumatic control, the operation precision is higher, the output is stable, and the output pressure is easy to increase.

Further, a cooling device is provided on the output mechanism of the pressurizing device, which can prevent its temperature from rising and affect its safety and reliability, and at the same time avoid inaccurate pressure application due to temperature rise.

Further, the shapes of the pressure plate and the support plate are the same as the cross-sectional shape of the fuel cell stack, which can minimize the area of the pressure plate and the support plate, and can obtain a uniform pressurization effect.

Furthermore, the output power of the heating furnace wire is automatically controlled by a temperature controller, which makes the test more convenient and the temperature control more accurate.

Further, the channel for the reaction gas pipeline to enter the heating furnace is opened at the furnace door, and the operation is convenient when the reaction gas pipeline is connected to the fuel cell stack. The insulation cotton is set to prevent heat loss in the heating furnace, which is conducive to maintaining a uniform temperature in the heating furnace .

Furthermore, a pressure detection mechanism is provided on the pressurizing device, which can effectively reflect its output pressure in real time and ensure accurate pressure applied to the fuel cell stack.

Further, a thermocouple is set in the heating furnace to reflect the temperature in the furnace to the temperature controller in real time.

Furthermore, the bottom of the structural support body is provided with universal wheels, which are easy to move when needed.

Description of drawings

Fig. 1 is a structural representation of the present invention:

1. Cylinder; 2. Gas reversing valve; 3. Pressure regulating valve; 4. Intake pipe; 5. Heat dissipation device; 6. Pressure plate; 7. Fuel cell stack; 10. Structural support body; 11. Reaction gas flow controller; 12. Temperature controller;

Detailed ways

Embodiments of the present invention are further described below in conjunction with accompanying drawings:

An integrated heating furnace with a pressurizing device, comprising a pressurizing device, a structural support body 10 and a heating furnace, the pressurizing device is arranged on the top of the structural support body 10, and the heating furnace is arranged in the middle of the structural support body 10, pressurizing The output end of the device extends into the heating furnace, and the heating furnace is provided with a support plate and a pressing plate 6, and the fuel cell stack 7 is arranged between the pressing plate 6 and the supporting plate, and the output mechanism of the pressurizing device passes through the furnace wall of the heating furnace, and the pressing plate 6 Connect the output mechanism of the pressurizing device.

The output mechanism of the pressurizing device is provided with a heat dissipation device 5, and the heat dissipation device 5 includes a heat dissipation block and a heat dissipation fan. The output mechanism of the pressurization device passes through the center of the heat dissipation block. There are cooling fans.

As an optional embodiment of the present invention, the pressurizing device includes a cylinder 1, a gas reversing valve 2, a pressure regulating valve 3, an intake pipe 4 and an air compression pump; the input end of the cylinder 1 is connected to the intake pipe 4, and the pressure regulating valve 3 The gas reversing valve 2 is sequentially arranged on the intake pipe 4 along the flow direction of the gas, and the intake pipe 4 is connected to the outlet of the air compression pump; the cylinder 1 is arranged on the top of the structural support body 10, and the free end of the piston rod of the cylinder 1 is connected to the pressure plate 6; During the testing and working process of the fuel cell stack 7, the air compression pump works continuously.

The pressurizing device of the present invention can also adopt a hydraulic system. The pressurizing device includes a hydraulic cylinder and a hydraulic station. The free end of the piston rod of the hydraulic cylinder is connected to the pressing plate 6. The top of the bracket body 10.

The shapes of the pressure plate 6 and the support plate are the same as the cross-sectional shape of the fuel cell stack 7 , and the area of the pressure plate 6 and the support plate is not smaller than the cross-section of the fuel cell stack 7 .

Wherein, the cylinder 1 is arranged on the top of the structural support body 10, the output end of the cylinder is connected to the pressure plate 6, and the pressure plate 6 is used to directly pressurize the fuel cell stack 7; the piston rod of the cylinder 1 passes through the top of the structural support body 10 and extends into the furnace It is connected with the pressure plate 6 inside.

The shapes of the pressure plate 6 and the support plate are the same as the cross-sectional shape of the fuel cell stack 7 , and the area of the pressure plate 6 and the support plate is not smaller than the cross-section of the fuel cell stack 7 .

A cooling device 5 is arranged on the piston rod, and the cooling device 5 includes a cooling block and a cooling fan, the piston rod passes through the center of the cooling block, the cooling block is surrounded by cooling fins, and the cooling fan is arranged on the outside of the cooling block.

When the pressurizing device is driven by a cylinder, the gas reversing valve 2 adopts SUODI Soti HV-02 manual pneumatic reversing valve; the pressure regulating valve 3 adopts Yiyuan AFR-2000 pressure regulating valve; the temperature controller adopts SRS 14A of Japan Shimaden Electric Type programmable PID regulator.

The heating furnace is arranged in the middle of the structural support body 10, the heating furnace wire 9 is arranged on the inner side wall of the heating furnace, the refractory insulation layer 8 is arranged on the furnace wall of the heating furnace, the fuel cell stack 7 is arranged in the center of the heating furnace, and the fuel cell stack 7 A pressure plate 6 is set above the fuel cell stack 7, and a support plate is set at the bottom of the fuel cell stack 7; the heating furnace wire 9 is connected to a temperature controller 12, and the temperature controller 12 controls the heating power and the switch of the heating furnace wire 9; the reaction gas flow controller 11 and the temperature control The device 12 is arranged at the lower part of the structural support body 10 , the temperature controller 12 is used to control the output power to the heating furnace wire 9 , and the reactant gas flow controller 11 is used to control the reactant gas flow to the fuel cell stack 7 .

As an embodiment of the present invention, the structural support body 10 adopts a frame-shaped support, and the beams and supporting columns of the frame-shaped support adopt channel steel, square pipe or angle steel.

When in use, the cylinder 1 is fixed on the top beam of the structural support body 10 with bolts, the compressed air is passed into the intake pipe 4, the pressure of the compressed air in the pipe is adjusted through the pressure regulating valve 3, and controlled by the gas reversing valve 2 The gas moves the cylinder piston upwards, and the pressure plate 6 rises to the highest position; then put the assembled fuel cell stack 7 into the center position on the heating furnace platform, and then control the gas through the gas reversing valve 2 to make the cylinder piston slowly descend, so that the pressure plate 6 down to the top of the fuel cell stack 7 in close contact; then adjust the intake pressure of the cylinder 1 through the pressure regulating valve 3, lower the pressure plate 6 to the fastening pressure set before the fuel cell stack 7 is heated, and the work is ready Finally, close the furnace door of the heating furnace; control the heating furnace wire 9 to heat the fuel cell stack 7 through the temperature controller 12, so that the fuel cell stack 7 is heated to the working temperature, and the reaction gas pipeline is passed through the channel opened on the heating furnace. Into the heating furnace, the reaction gas is delivered to the fuel cell stack 7 for discharge test. During the test, the cylinder 1 is always in a state of applying pressure to the fuel cell stack 7.

The lower part of the structural support body 10 of the present invention is also provided with a reaction gas flow controller 11, through which the reaction gas flow controller 11 is passed to control the reaction gas flow rate of the fuel cell stack 7 for discharge testing; during the test, the cylinder 1 The state of applying pressure to the fuel cell stack 7 is always maintained.

When the pressurizing device adopts an oil cylinder, the oil cylinder is fixed on the top beam of the structural support body 10 with bolts, the oil cylinder is connected to the hydraulic station, the hydraulic station controls the piston of the oil cylinder to move upward, and the piston of the oil cylinder drives the pressure plate 6 to rise to the highest position; The assembled fuel cell stack 7 is placed in the center of the support plate in the heating furnace, and then the piston of the oil cylinder is slowly lowered through the hydraulic station, so that the pressure plate 6 is lowered to be in close contact with the top of the fuel cell stack 7, and the oil cylinder is further controlled by the hydraulic station. The pressing plate 6 is pressed down to the fastening pressure set before the fuel cell stack 7 is heated. After the work is ready; Heating to make the fuel cell stack 7 warm up to the working temperature, the reaction gas pipeline is passed into the heating furnace through the channel opened on the heating furnace, and the reaction gas is transported to the fuel cell stack 7 for discharge test; during the test, the oil cylinder is always kept The fuel cell stack 7 is under pressure.

Claims (10)

1. a kind of integrated heating furnace with pressurizing device, which is characterized in that including pressurizing device, structure stand ontology (10) with And heating furnace, pressurizing device setting are arranged in the top of structure stand ontology (10), heating furnace in structure stand ontology (10) output end at middle part, pressurizing device protrudes into heating furnace, and support plate and pressing plate (6) are provided in heating furnace, combustion Expect that battery pile (7) are arranged between pressing plate (6) and support plate, the output mechanism of pressurizing device passes through the furnace wall of heating furnace, pressure Plate (6) connects the output mechanism of pressurizing device, offers on heating furnace and enters inside heating furnace for reaction gas pipeline Channel.

2. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that pressurizing device includes cylinder (1), gas commutating valve (2), pressure-regulating valve (3), air inlet pipe (4) and air pressure pump；The input terminal of cylinder (1) connect into Tracheae (4), pressure-regulating valve (3) and gas commutating valve (2) are successively set on air inlet pipe (4) along the flow direction of gas, air inlet pipe (4) it is connected to the outlet of air pressure pump；Cylinder (1) setting is at the top of structure stand ontology (10), and the piston rod of cylinder (1) is certainly Pressing plate (6) are connected by end.

3. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that pressurizing device includes hydraulic The piston rod free end of cylinder and hydraulic station, hydraulic cylinder connects pressing plate (6), the input terminal of the output end connection liquid cylinder pressure of hydraulic station, Hydraulic cylinder is arranged at the top of structure stand ontology (10).

4. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that the output machine of pressurizing device Structure is provided with radiator (5), and the radiator (5) includes radiating block and radiator fan, and the output mechanism of pressurizing device is worn The radiating block center is crossed, radiating block surrounding is radiating fin, is provided with radiator fan on radiating fin.

5. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that pressing plate (6) and support plate Shape it is identical as the cross-sectional shape of fuel cell pack (7), and pressing plate (6) and the area of support plate are not less than fuel cell The cross section of heap (7).

6. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that heating furnace silk (9) setting In the heating furnace inner sidewall, heating furnace silk (9) connects the output end of temperature controller (12), temperature controller (12) control The heating power and switch of heating furnace silk (9), temperature controller (12) are arranged in the lower part of structure stand ontology (10).

7. the integrated heating furnace according to claim 6 with pressurizing device, which is characterized in that be provided in heating furnace Thermocouple, thermocouple connect the input terminal of temperature controller (12).

8. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that on the fire door of heating furnace Aperture enters the channel inside heating furnace as reaction gas pipeline, and heat-preservation cotton is arranged in the aperture.

9. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that be provided on pressurizing device For showing the pressure detection mechanism of its output pressure.

10. the integrated heating furnace according to claim 1 with pressurizing device, which is characterized in that structure stand ontology (10) bottom is provided with universal wheel.