CN114812180A - SOFC solid fuel cell binder removal and sintering integrated furnace - Google Patents

Abstract

The invention relates to the technical field of sintering furnaces and discloses an SOFC solid fuel cell glue-discharging and sintering integrated furnace which comprises a furnace body with a double-layer mechanism, wherein three sides, the bottom and the inner wall of a sealing door in the furnace body are respectively provided with a group of heating mechanisms; the five groups of heating mechanisms are respectively provided with an independent control mechanism, each group of heating mechanisms is respectively provided with a plurality of heating mechanisms, each heating mechanism comprises an alundum tube and a resistance wire, the alundum tubes are embedded in the inner sides of the furnace body and the sealing door, and the resistance wires are spirally and detachably arranged on the inner sides of the alundum tubes; the thermal field control mode of the double system is as follows: the hot air circulation of the preheating system is carried out at low temperature, and the five-surface heating radiation in the hearth is carried out at high temperature, so that the good uniformity of two stages of low-temperature glue discharging and high-temperature sintering is ensured.

Description

SOFC solid fuel cell binder removal and sintering integrated furnace

Technical Field

The invention relates to the field of sintering furnaces, in particular to a SOFC solid fuel cell gel discharging and sintering integrated furnace.

Background

The sintering furnace is special equipment for obtaining required physical and mechanical properties and microstructure of the powder compact through sintering; the sintering furnace is used for drying slurry on the silicon wafer, removing organic components in the slurry and completing sintering of the aluminum back surface field and the grid line.

Inside resistance wire of current fritting furnace is many around establishing in the outside of alundum pipe, leads to accomplishing the back in the installation, takes place to damage when the resistance wire, the change of being not convenient for, the most synchronous control of all heating resistance wires in the stove simultaneously leads to local direction temperature high excessively, and current fritting furnace mostly only uses one set of heating system, and the performance of resistance wire when carrying out low temperature heating is ideal inadequately, consequently needs to improve current fritting furnace.

In view of the above-mentioned related technologies, the inventor believes that the existing sintering furnace has the defects of non-ideal heating mode and inconvenient later maintenance.

Disclosure of Invention

In order to solve the problems, the invention provides an SOFC solid fuel cell glue discharging and sintering integrated furnace.

The invention provides an SOFC solid fuel cell gel discharging and sintering integrated furnace, which adopts the following technical scheme:

a glue discharging and sintering integrated furnace for SOFC solid fuel cells comprises a furnace body with a double-layer mechanism, wherein the top end of the furnace body is communicated with an exhaust end, the front side of the furnace body is rotatably connected with a sealing door, a trolley is slidably connected below the furnace body, and a group of heating mechanisms are distributed on three inner side surfaces, the bottom and the inner wall of the sealing door of the furnace body;

the five groups of heating mechanisms respectively adopt independent control mechanisms, each group of heating mechanisms is provided with a plurality of heating mechanisms, the plurality of heating mechanisms are unevenly distributed on the corresponding side wall, each heating mechanism comprises an alundum tube and a resistance wire, the alundum tube is embedded in the inner sides of the furnace body and the sealing door, and the resistance wire is spirally and detachably arranged on the inner side of the alundum tube;

the outside of furnace body is provided with preheats the mechanism, and preheats the inside intercommunication setting of mechanism and furnace body for the low temperature heating operation.

Preferably, the furnace body hearth is built by light foam bricks, and notch buckles are reserved on five inner walls of the furnace body hearth.

Preferably, the bottom end of the corundum tube is fixedly connected with a ceramic rod, and the corundum tube is clamped into a reserved notch buckle of a furnace body hearth.

Preferably, the five inner walls in the furnace body hearth are provided with temperature sensing mechanisms, and the outside of the furnace body is provided with five independent temperature control systems corresponding to the temperature sensing mechanisms.

Preferably, the input end of the preheating mechanism is fixedly connected with a fan through a bolt, and the output end of the preheating mechanism is communicated with the exhaust end at the top of the furnace body.

Preferably, the bottom of furnace body is provided with the guide rail, and sliding connection has the platform truck on the guide rail, the platform truck adopts electric control.

In summary, the invention includes at least one of the following beneficial technical effects:

the five surfaces of the heating pipes are arranged, and the air preheating system in the form of an air preheating bag realizes the heat convection effect at low temperature and ensures the uniformity of a temperature field at low temperature; the thermal field control mode of the double system is as follows: the hot air circulation of the preheating system is carried out at low temperature, and the heating radiation of five surfaces in the hearth is carried out at high temperature, so that the good uniformity of two stages of low-temperature binder removal and high-temperature sintering is ensured; the resistance wire that the screw thread set up in the alundum pipe, cooperation alundum pipe expose in the inner wall outside of furnace, promote its maintenance convenience of changing, promote the heating effect simultaneously.

Drawings

Fig. 1 is a schematic front view of the structure of the embodiment of the invention.

FIG. 2 is a schematic diagram of a side view configuration of an embodiment of the invention.

FIG. 3 is a schematic isometric view of an embodiment of the invention.

FIG. 4 is a schematic sectional view of a corundum tube according to the embodiment of the invention.

FIG. 5 is a schematic diagram of a temperature control loop according to an embodiment of the invention.

Description of reference numerals: 1. a furnace body; 2. sealing the door; 3. an exhaust end; 4. a preheating mechanism; 5. a fan; 6. a guide rail; 7. a trolley; 8. a heating mechanism; 801. a corundum tube; 802. a resistance wire; 803. a ceramic rod; 9. a temperature sensing mechanism.

Detailed Description

The present invention is described in further detail below with reference to FIGS. 1-5.

The embodiment of the invention discloses an SOFC solid fuel cell glue discharging and sintering integrated furnace. Referring to fig. 1-5, the SOFC solid fuel cell binder removal and sintering integrated furnace comprises a furnace body 1 with a double-layer mechanism, a hearth of the furnace body 1 is built by light foam bricks, the heat insulation and preservation characteristics of the light foam bricks are utilized, and the five inner walls of the furnace body 1 are reserved with notch buckles, the preferable furnace body 1 is provided with a steel plate at the outer side of the foam brick, the steel plate has a double-layer structure, the bottom is provided with a ventilation opening, thereby reducing the surface temperature of the outer side of the furnace body 1 and improving the safety of the furnace body 1, the top end of the furnace body 1 is communicated with an exhaust end 3, the front side of the furnace body 1 is rotatably connected with a sealing door 2, the preferred sealing door 2 is a manual side opening door, the sealing door 2 is fixed on one side of the furnace body 1 through a bolt, a trolley 7 is connected below the furnace body 1 in a sliding manner, and a group of heating mechanisms 8 are distributed on three inner side surfaces and the bottom of the furnace body 1 and on the inner wall of the sealing door 2;

the five groups of heating mechanisms 8 are respectively provided with an independent control mechanism, each group of the heating mechanisms 8 is respectively provided with a plurality of heating mechanisms 8, the plurality of heating mechanisms 8 are unevenly distributed on the corresponding side wall, each heating mechanism 8 comprises an corundum tube 801 and a resistance wire 802, the corundum tube 801 is embedded in the furnace body 1 and the inner side of the sealing door 2, the resistance wire 802 is spirally and detachably arranged on the inner side of the corundum tube 801, the bottom end of the corundum tube 801 is fixedly connected with a ceramic rod 803, the ceramic rod 803 is used for supporting the corundum tube 801 and is used for placing the corundum tube 801 to deform during high-temperature heating, the corundum tube 801 is clamped in a reserved cut buckle of a furnace chamber of the furnace body 1, the heating mechanisms 8 are uniformly distributed and fully exposed on the inner wall of the furnace chamber, the heating effect is improved, the service life of the resistance wire 802 is prolonged, and meanwhile later-stage replacement is facilitated;

the preheating mechanism 4 is arranged on the outer side of the furnace body 1, the preheating mechanism 4 is communicated with the interior of the furnace body 1 and is used for low-temperature heating operation, the input end of the preheating mechanism 4 is fixedly connected with a fan 5 through a bolt, the output end of the preheating mechanism 4 is communicated with the exhaust end 3 at the top of the furnace body 1, when low-temperature heating is needed, air firstly enters the preheating mechanism 4 through the fan 5 to be preheated and is accumulated in the preheating mechanism 4, when a valve is opened, a preheating system in the form of a preheating bag enters the furnace to realize the heat convection effect at low temperature and ensure the temperature uniformity at low temperature, the temperature sensing mechanisms 9 are arranged on five inner walls in the furnace chamber of the furnace body 1, five independent temperature control systems corresponding to the temperature sensing mechanisms 9 are arranged on the exterior of the furnace body 1, and the optimized temperature sensing mechanisms 9 are simultaneously connected to a high-temperature limiting protection system, when the temperature of the furnace exceeds a preset value, starting high-temperature protection to improve the safety of the furnace, wherein a temperature control instrument adopts a Japanese imported program temperature control instrument which has P, I, D parameter self-tuning and manual revision functions and simultaneously has power-off alarm protection functions of over-temperature, under-temperature, disconnection and the like, once any alarm is generated, a power supply can be immediately cut off so as to prevent the over-burning of a product when the temperature control system fails;

the bottom end of the furnace body 1 is provided with a guide rail 6, the guide rail 6 is connected with a trolley 7 in a sliding manner, the trolley 7 is controlled electrically, the preferred trolley 7 is made of hard alumina, a burning bearing plate is a silicon carbide plate, the mechanical strength is high, and a bottom heating element is effectively protected;

the furnace is controlled by a touch screen, and the touch screen operates the main functions of the system: the temperature curve is recorded and can be inquired on line and data is exported and analyzed; 50 programs can be stored and called, and each program has 48 sections of curves; the quantitative control of air volume in different wax removal stages can be realized; the output power and PV and SV values are displayed digitally; the main interface displays the curve number, the step number, the remaining time, the PID number and the cycle number on line; the imported power regulator technology of the executive element replaces the traditional alternating current contactor control to realize the soft contact control, the soft contact control is accurate, reliable and long in service life, and because the imported single-loop intelligent temperature control instrument simultaneously has the PID parameter self-setting function, the interference factors can be eliminated and the temperature change can be adjusted according to the change of the thermal inertia coefficient without the intervention of an operator, so that the sintering requirements of different temperature process curves are met.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a SOFC solid fuel cell binder removal sintering integrative stove, includes furnace body (1) of double-deck mechanism, the top intercommunication of furnace body (1) has exhaust end (3), and the front of furnace body (1) is rotated and is connected with sealing door (2), its characterized in that: a trolley (7) is connected below the furnace body (1) in a sliding manner, and a group of heating mechanisms (8) are distributed on three inner side surfaces and the bottom of the furnace body (1) and on the inner wall of the sealing door (2);

the five groups of heating mechanisms (8) are respectively provided with an independent control mechanism, each group of the heating mechanisms (8) is respectively provided with a plurality of heating mechanisms (8), the plurality of heating mechanisms (8) are unevenly distributed on corresponding side walls, each heating mechanism (8) comprises an corundum tube (801) and a resistance wire (802), the corundum tube (801) is embedded in the furnace body (1) and the inner side of the sealing door (2), and the resistance wires (802) are spirally and detachably arranged on the inner sides of the corundum tubes (801);

the outside of furnace body (1) is provided with preheats mechanism (4), and preheats the inside intercommunication setting of mechanism (4) and furnace body (1) for the low temperature heating operation.

2. The SOFC solid fuel cell gel-discharging and sintering integrated furnace of claim 1, wherein: the furnace body (1) furnace is built by laying light foam bricks, and notch buckles are reserved on five inner walls of the furnace body (1) furnace.

3. The SOFC solid fuel cell gel-discharging and sintering integrated furnace of claim 2, wherein: the bottom end of the corundum tube (801) is fixedly connected with a ceramic rod (803), and the corundum tube (801) is clamped into a reserved notch buckle of a furnace body (1) hearth.

4. The SOFC solid fuel cell gel-discharging and sintering integrated furnace of claim 3, wherein: the furnace body (1) furnace five inner walls all are provided with temperature-sensing mechanism (9), the outside of furnace body (1) all is provided with five independent temperature control systems that correspond the setting with temperature-sensing mechanism (9).

5. The SOFC solid fuel cell gel-discharging and sintering integrated furnace of claim 1, wherein: the input end bolt fixedly connected with fan (5) of preheating mechanism (4), and the output of preheating mechanism (4) and exhaust end (3) at furnace body (1) top communicate the setting between.

6. The SOFC solid fuel cell gel-discharging and sintering integrated furnace of claim 1, wherein: the bottom of furnace body (1) is provided with guide rail (6), and sliding connection has platform truck (7) on guide rail (6), platform truck (7) adopt electric control.

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