JP5409016B2 - Power generation test equipment for solid oxide fuel cell - Google Patents

Description

  The present invention relates to a power generation test apparatus for a solid oxide fuel cell, and more particularly to a power generation test apparatus for a solid oxide fuel cell capable of repeatedly using a fuel chamber and an air electrode gas chamber. .

  A cell, which is the minimum unit of a solid oxide fuel cell, is composed of an electrolyte, a fuel electrode stacked on one surface, and an air electrode stacked on the other surface. For example, the electrolyte, the fuel electrode, and the air electrode are each formed of oxide ceramics. In the solid oxide fuel cell, a single hydrogen gas is supplied to the fuel electrode or a hydrogen gas extracted from the city gas or LPG by internal reforming is supplied. The gas is supplied and operated under a temperature condition of 600-1000 ° C. Then, oxygen in the air electrode gas introduced into the air electrode dissociates at the interface with the electrolyte and becomes oxygen ions, which diffuse through the electrolyte and move to the fuel electrode, and electrochemically with hydrogen. Water reacts to produce water, but the emitted electrons move to the air electrode through an electric circuit and are used for the reaction at the air electrode. In this way, electricity is generated by electrons flowing through the electric circuit. In order to grasp the power generation characteristics of the solid oxide fuel cell, there is a test apparatus for testing the power generation capacity of the cell.

  Conventionally, as a power generation test apparatus for a solid oxide fuel cell, it has a fuel chamber for storing a fuel electrode side gas and an air electrode gas chamber for storing an air electrode side gas. An apparatus in which a cell is sandwiched between chambers has been used. Such a device is disclosed as a prior art in Patent Document 1.

  The power generation test apparatus includes an electrolyte, a fuel electrode having the same planar shape as the electrolyte stacked on the upper surface of the electrolyte, and an air electrode having a smaller planar shape than the electrolyte stacked on the lower surface of the electrolyte. The cell is sandwiched from above and below by a fuel chamber (in the literature, a gas isolation pipe) and an air electrode gas chamber (in the literature, a gas isolation pipe). In order to seal the cell having such a configuration, the opening end of the air electrode gas chamber is in close contact with the electrolyte, and the opening end of the fuel chamber is in close contact with the fuel electrode.

JP 2008-59833 A (see [0005] [0006] in the specification and [FIG. 13] in the drawing)

  In the power generation test apparatus, since the electrolyte to which the opening side end of the air electrode gas chamber is in close contact is an oxide ceramic having a dense structure, there is no problem in sealing performance as long as the adhesion is improved. However, since the opening side end of the fuel chamber is in close contact with the fuel electrode having a porous structure, the fuel electrode can be formed even if the opening side end of the fuel chamber and the fuel electrode are sufficiently in close contact with each other. The high-pressure fuel gas supplied to the side passes through the fuel electrode and leaks to the outside. The leakage of the fuel gas is not preferable from the viewpoint of efficiently supplying the fuel gas for the test.

  Further, the fuel chamber and the air electrode gas chamber with the cell to be tested sandwiched therebetween are subjected to the test in an atmosphere of 600 to 1000 ° C. When performing the test under this temperature condition, the adhesion between the opening side end of the air electrode gas chamber and the electrolyte, or the adhesion between the opening side end of the fuel chamber and the fuel electrode, It is necessary to improve the sealing performance in the chamber. Therefore, a pressing force is also applied to the air electrode gas chamber and the fuel chamber from the outside so that the respective contact portions have a pressing relationship with each other. Furthermore, in order to improve the sealing performance at the close contact portion, a substance that softens under the temperature condition is interposed as a sealing member.

  However, the opening side end of the air electrode gas chamber and the electrolyte, or the opening side end of the fuel chamber and the fuel electrode are subjected to a pressing force at a high temperature as described above via the seal member. When they are in close contact with each other, they are temporarily bonded, and are cooled and solidified as they are. Further, when the seal member is interposed, a part of the seal member may be melted and melt-bonded. Then, it becomes difficult to separate the electrolyte from the end of the air electrode gas chamber or the fuel electrode from the end of the fuel chamber, and the air electrode gas chamber or the fuel chamber must be made disposable. There are situations where you can't.

  The present invention has been made paying attention to such a problem. The object of the present invention is to provide a cathode gas chamber and a seal between the fuel chamber and the solid oxide fuel cell. An object of the present invention is to provide a power generation test apparatus for a solid oxide fuel cell, which can be reliably used and can be used repeatedly for an air electrode gas chamber and a fuel chamber.

In order to solve the above problem, the invention of the power generation test apparatus for a solid oxide fuel cell according to claim 1 is characterized in that the fuel electrode is laminated on one surface of the electrolyte of the plate-shaped body, and the air is formed on the other surface. In the power generation test apparatus for a solid oxide fuel cell, in which electrodes are stacked, the box-shaped lower frame and the upper frame are closed to each other with their openings facing each other, and are accommodated in the electrolyte. Has a sealing surface portion for sealing outside the outer peripheral portion of each of the fuel electrode and the air electrode, and includes an opening side end portion of a fuel chamber that contains the fuel electrode and is supplied with fuel gas, and the air A seal member is interposed between each opening-side end portion and the electrolyte by the opening-side end portion of the air electrode gas chamber that accommodates the electrode and is supplied with the air electrode gas, and the electrolyte in the sealing surface portion. Is pinched Unishi, whereas, provided with a biasing means for biasing in a direction in which the said open end of said chamber for the air electrode gas so as to be exposed to the upper frame outside the opening side end of the fuel chamber approach each other The biasing means is provided with a reverse biasing means for biasing in a direction opposite to the biasing direction of the biasing means, and the biasing means is connected to the fuel chamber and is formed on a support member exposed to the outside of the upper frame. An urging force is applied to one surface of the urging receiving portion in a direction from the fuel electrode toward the air electrode, and the reverse urging means is configured to apply the air to the other surface of the urging receiving portion. An urging force is applied in a direction from the pole toward the fuel electrode .

  According to the first aspect of the present invention, the electrolyte is sized so that the outer portions of the outer peripheral portions of the fuel electrode and the air electrode can be used as the seal surface portion. Then, an opening side end of the fuel chamber and an opening side end of the air electrode gas chamber interpose a sealing member between each opening side end and the electrolyte so that the electrolyte is sandwiched between the sealing surface portions. I tried to do it. Therefore, unlike the conventional technique in which the opening end of the fuel chamber is in close contact with the porous fuel electrode, in the present invention, the opening end of the fuel chamber is the sealing member. Thus, the fuel gas can be prevented from leaking.

In the present invention, the biasing means for biasing the opening side end of the air electrode gas chamber and the opening side end of the fuel chamber in a direction approaching each other is provided, and the biasing of the biasing means is provided. Reverse biasing means for biasing in the direction opposite to the direction was provided. Therefore, after conducting a power generation test at a high temperature, the urging force of the urging means is released, and the opening side end of the air electrode gas chamber and the opening side end of the fuel chamber are separated by the reverse urging means. It is possible to bias in directions away from each other. Then, even if each of the opening side end of the air electrode gas chamber and the opening side end of the fuel chamber is in a temporarily bonded state with the seal member, the pressing force is applied when still in a high temperature atmosphere. Since it disappears, the temporary adhesion state can be eliminated. Further, the respective urging forces of the urging means and the reverse urging means are applied to the urging receiving portion formed on the support member that is connected to the fuel chamber and exposed outside the upper frame. Therefore, since the urging means and the reverse urging means are not exposed to a high temperature atmosphere, adjustment and maintenance of each urging force can be easily performed.

According to a second aspect of the present invention, there is provided a power generation test apparatus for a solid oxide fuel cell having a fuel electrode laminated on one surface of a plate-like electrolyte and an air electrode laminated on the other surface. The lower frame and the upper frame are closed to each other with the openings facing each other, and the electrolyte accommodated therein is sealed outside the outer periphery of each of the fuel electrode and the air electrode. An opening side end of a fuel chamber that has a sealing surface portion and that accommodates the fuel electrode and is supplied with fuel gas; and an opening side end of an air electrode gas chamber that accommodates the air electrode and is supplied with air electrode gas A seal member interposed between each opening side end and the electrolyte so that the electrolyte is sandwiched between the seal surface portions, while the air is exposed to the outside of the lower frame. Pole gas A biasing means for biasing the opening side end of the chamber and the opening side end of the fuel chamber toward each other is provided, and reverse biasing biasing in a direction opposite to the biasing direction of the biasing means is provided. A biasing means is provided, and the biasing means is connected to the air electrode gas chamber and is fueled from the air electrode to one surface of a bias receiving portion formed on a support member exposed outside the lower frame. A biasing force is applied in a direction toward the pole, and the reverse biasing means applies a biasing force in a direction from the fuel electrode to the air electrode with respect to the other surface of the bias receiving portion. It is.

According to the second aspect of the present invention, the urging force of each of the urging means and the reverse urging means is coupled to the air electrode gas chamber and formed on the support member exposed to the outside of the lower frame. It was made to act on the part. Therefore, since the urging means and the reverse urging means are not exposed to a high temperature atmosphere, adjustment and maintenance of each urging force can be easily performed.

According to a third aspect of the present invention, in the power generation test apparatus for a solid oxide fuel cell according to the first or second aspect , each of the urging means and the reverse urging means is made of a wire rod. The reverse urging means expresses an urging force that is weaker than the urging force of the urging means.

According to the invention described in claim 3 , each of the urging means and the reverse urging means is a compression spring formed of a wire rod, and the urging force of the reverse urging means is weaker than the urging force of the urging means. It was. Therefore, a simple structure using two types of compression springs resists the biasing force of the reverse biasing means in the direction in which the opening end of the air electrode gas chamber and the opening end of the fuel chamber approach each other. Thus, the urging force of the urging means can be applied. Also, if the compressive force of the biasing means against the compression spring is released, the opening end of the air electrode gas chamber and the opening end of the fuel chamber are separated from each other by the compression spring of the reverse biasing means. An urging force can be applied to.

According to a fourth aspect of the present invention, in the power generation test apparatus for a solid oxide fuel cell according to the first or second aspect , the side opposite to the side in contact with the biasing receiving portion of the biasing means. A pushing member that pushes in the end portion of the air electrode gas chamber against the repulsive force of the reverse biasing means due to the pushing of the pushing member. The opening-side end portion of the fuel and the opening-side end portion of the fuel chamber apply a pressing force to a portion sandwiching the electrolyte via the seal member.

According to the fourth aspect of the present invention, the pushing member is provided, the end of the urging means is pushed by the pushing member, and the urging means is operated. Further, if the pushing of the pushing member is released, the reverse biasing means can be operated.

According to a fifth aspect of the present invention, in the power generation test apparatus for a solid oxide fuel cell according to the fourth aspect , when the pushing member is separated from the end of the urging means, the reverse urging means is provided. Is characterized in that the urging force against the other surface of the urging receiving portion is maintained.

According to the fifth aspect of the present invention, when the pushing member is separated from the end of the urging means, the urging force against the urging receiving portion of the reverse urging means can be maintained. Therefore, the urging force of the reverse urging means can be reliably applied in the direction in which the opening side end of the air electrode gas chamber and the opening side end of the fuel chamber are separated from each other.

  According to the present invention, the air electrode gas chamber, the fuel chamber, and the solid oxide fuel cell are more reliably sealed, and the air electrode gas chamber, the fuel chamber, and the seal member Since sticking can be prevented, it is possible to provide a power generation test apparatus for a solid oxide fuel cell that enables repeated use of each chamber.

The partial cross section figure which shows typically the whole power generation test apparatus of embodiment of this invention. The partial cross section figure which shows a chamber unit typically. The urging means and the reverse urging means are schematically shown. (A) shows a state in which the urging force of the urging means is expressed, and (b) shows a state in which the urging force of the urging means is not expressed.

(Embodiment)
Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS. In FIG. 1, each of the four lower support members 14 and the support members 17 is depicted as one in order to avoid reading hindrance due to the drawing. In addition, two air electrode side tubes 7 and fuel electrode side tubes 8 in the present embodiment are arranged, but these are also drawn as one each. As for the material of each member, steel is used unless otherwise specified. In addition, the air electrode gas is simply referred to as air.

  As shown in FIG. 1, in the power generation test apparatus of this embodiment, a box-shaped lower frame 10 and an upper frame 11 are closed with each opening facing each other, and each engaging protrusion 26a. The engaging protrusion 26b is engaged by the locking member 27.

  The lower frame 10 includes a bottom plate 10a and a side plate 10b, and a ceramic bottom heat insulating material 1, a side heat insulating material 2, and a side heat insulating material 3 are accommodated therein. Also, four support pins 13 arranged in a square shape are fixed to the bottom plate 10a, and the lower support plate 12 through which the four support pins 13 pass is secured by a hexagon nut 13a screwed to the support pin 13. I support it. The lower support plate 12 penetrates the bottom plate 10a and the bottom heat insulating material 1 and supports four lower support members 14 arranged at equal intervals on the circumference from below. The tip of the lower support member 14 is screwed into the air chamber 30. The hexagon nut 14a is used as a positioning member that restricts the upward movement of the lower support member 14.

  Further, two air electrode side tubes 7 are piped through the lower support plate 12 and the bottom plate 10 a and through the inside of the sleeve 7 c inserted into the hole of the bottom heat insulating material 1. As will be described in detail later, the air electrode side tube 7 is used for supplying air into the air chamber 30 and discharging excess gas, and is not shown through a pipe (not shown). It is connected to an air supply device and an air discharge device.

  A bracket 22 is fixed to the left and right ends of the bottom plate 10a by hexagon bolts 22a, and a support plate 23 that supports a ceramic positioning pin 24 is fixed to the upper portion of the bracket 22 by hexagon bolts 23a. . The positioning pin 24 passes through the sleeve 25 disposed on the side heat insulating material 3 and positions the device under test 51 at its end as will be described in detail later. The hexagon nut 24a is used as a positioning member that restricts the outward movement of the positioning pin 24.

  The upper frame 11 includes an upper plate 11a and a side plate 11b, and accommodates an upper heat insulating material 4 made of ceramic therein. Also, four support pins 16 arranged in a square shape are fixed to the upper plate 11a, and the upper support plate 15 is sandwiched between a hexagon nut 16a and an annular portion 16b screwed to the support pin 16. . Four pushing members 19 arranged at equal intervals on the circumference are screwed to the upper support plate 15.

  Further, four round bar-like support members 17 that are slidably penetrated through the upper plate 11a and the upper heat insulating material 4 and are arranged at equal intervals on the circumference are provided, and the plate formed on the support member 17 A separation spring 20 made of a wire material as a reverse biasing means is provided between the urging biasing receiving portion 18 and the upper plate 11a. Further, a pressing spring 21 made of a wire material as an urging means is provided on the upper surface portion of the urging receiving portion 18. The front end portion of the support member 17 is screwed into the fuel chamber 37.

  Further, two fuel electrode side tubes 8 are piped through the upper support plate 15, the upper plate 11 a and the upper heat insulating material 4. As will be described in detail later, the fuel electrode side pipe 8 is used for supplying fuel gas into the fuel chamber 37 and discharging excess fuel gas and generated moisture, and is not shown in the drawing. Are connected to a fuel gas supply device and a processing device (not shown).

  A heater 9 is disposed on the inner surface of the side heat insulating material 3, and the heater 9 heats a space surrounded by the bottom heat insulating material 1, the side heat insulating material 2, the side heat insulating material 3, and the upper heat insulating material 4. The high temperature chamber 50 set to any temperature of 600 to 1000 ° C. corresponding to the condition of the device under test 51 is formed. The chamber unit 5 disposed in the high temperature chamber 50 is positioned in the horizontal direction by four ceramic positioning pins 6 disposed at equal intervals on the circumference, and is made of a ceramic sandwiching the device under test 51. An air chamber 30 and a fuel chamber 37 are included. The air chamber 30 is supported by the four lower support members 14, and the fuel chamber 37 is supported by the four support members 17. The ceramic hexagon nut 6 a screwed to both ends of each positioning pin 6 is used to prevent the positioning pin 6 from falling off from the air chamber 30 or the fuel chamber 37.

Next, the chamber unit 5 will be described in detail with reference to FIG. In FIG. 2, illustration of the lower support member 14, the support member 17, and the positioning pins 6 is omitted.
A device under test 51 includes a fuel electrode 35 stacked on the upper surface of a disk-shaped electrolyte 34, an air electrode 33 stacked on the lower surface of the electrolyte 34, and an electrolyte 34 outside the outer peripheral portions of the fuel electrode 35 and the air electrode 33. And a seal member 36 made of a silver annular body disposed on both sides of the plate. The fuel electrode 35 and the upper seal member 36 are electrically connected by a current collector and a conductive material (not shown). Similarly, the air electrode 33 and the lower seal member 36 are electrically connected by a current collector and a conductive material (not shown).

  As described above, the device under test 51 fitted in the recesses 24 c of the left and right positioning pins 24 is positioned in the vertical and horizontal directions by the left and right positioning pins 24. This vertical positioning is performed until the device under test 51 is sandwiched between the air chamber 30 and the fuel chamber 37. As described above, the upper seal member 36 that is electrically connected to the fuel electrode 35 is electrically connected to the conductive portion 24b of the right positioning pin 24, and the fuel electrode 35 is electrically connected to a voltmeter (not shown) via the conductive portion 24b. It is connected to the. The lower seal member 36 that is electrically connected to the air electrode 33 is electrically connected to the conductive portion 24d of the left positioning pin 24, and the air electrode 33 is electrically connected to a voltmeter (not shown) via the conductive portion 24d. ing.

  The air chamber 30 includes a disk-shaped base portion 30a and a cylindrical tubular body portion 30b, and the inside of the tubular body portion 30b is an air accommodating chamber 30c that accommodates air. A recess 30d is formed at the bottom of the air accommodating chamber 30c, and a supply pipe 7a for supplying air A into the air accommodating chamber 30c and a discharge pipe for discharging excess air A at the bottom of the recess 30d. 7b is arranged. The bottom of the recess 30d is filled with a sealing material (not shown) for sealing between the supply pipe 7a and the discharge pipe 7b and the holes through which they are inserted. The supply pipe 7a and the discharge pipe 7b are the air electrode side pipe 7 shown in FIG.

  The fuel chamber 37 includes a disc-shaped base portion 37a and a cylindrical tubular body portion 37b, and the inside of the tubular body portion 37b serves as a fuel gas storage chamber 37c that stores fuel gas. A concave portion 37d is formed on the upper surface of the base portion 37a, and the supply pipe 8a for supplying the fuel gas N passes through the bottom of the concave portion 37d and faces the fuel gas storage chamber 37c. A discharge pipe 8b for discharging the fuel gas N and the generated water is disposed. The bottom of the recess 37d is filled with a sealing material (not shown) for sealing between the supply pipe 8a and the discharge pipe 8b and the holes through which they are inserted. The supply pipe 8a and the discharge pipe 8b are the fuel electrode side pipe 8 shown in FIG.

  Then, the lower seal member 36 of the DUT 51 is placed on the opening end 31 of the air chamber 30, and the opening end 38 of the fuel chamber 37 is placed on the upper seal member 36. The electrolyte 34 is sandwiched and sealed by the opening-side end 31 and the opening-side end 38 via the upper and lower sealing members 36. At this time, the opening-side end portion 31 is positioned by the lower support member 14 that supports the air chamber 30 so as not to move downward. The opening-side end 38 presses the upper seal member 36 by the urging force of the pressing spring 21 through the support member 17 that supports the fuel chamber 37. Accordingly, the upper and lower seal members 36 and the electrolyte 34 between the opening side end portion 31 and the opening side end portion 38 are in close contact with each other at a portion where they abut against each other.

Next, the operation of the pressing spring 21 as the biasing means and the separation spring 20 as the reverse biasing means will be described with reference to FIG.
As shown in FIG. 3A, a separation spring 20 is disposed between the lower surface portion 18a of the bias receiving portion 18 of the support member 17 and the upper plate 11a. The rod-shaped pushing member 19 having a hexagonal head 19d has a screw portion 19c screwed to the upper support plate 15, and a pressing plate 19a screwed to the tip portion. The pressing plate 19a cannot be rotated by the stop pin 19b. A pressing spring 21 is disposed between the pressing surface portion 19e of the pressing plate 19a and the upper surface portion 18b of the bias receiving portion 18.

  In the state shown in FIG. 3A, when the hexagon head 19d is rotated forward, the pushing member 19 advances downward to generate a biasing force on the pressing spring 21, and the biasing force is generated by the separation spring. It shows that a downward force is applied to the urging receiving portion 18 against the urging force 20. Therefore, the support member 17 that receives the downward force via the bias receiving portion 18 generates a pressing force at the opening side end portion 38 of the fuel chamber 37.

  Then, as shown in FIG. 3B, by rotating the hexagonal head 19 d in the reverse direction, the pushing member 19 is moved backward so that a gap is formed between the pressing surface portion 19 e and the end portion 21 a of the pressing spring 21. In this case, the pressing spring 21 has a natural length and does not generate an urging force. Then, the urging force with respect to the urging receiving portion 18 is only the urging force of the separating spring 20 moving upward. This upward biasing force is transmitted to the opening side end portion 38 of the fuel chamber 37 via the support member 17, and instead of the pressing force of the opening side end portion 38 against the seal member 36, the opening side end portion 38 becomes the sealing member. Acts as a force separating from 36. At this time, since the chamber unit 5 is in the high temperature chamber 50, the temporarily bonded state between the opening side end portion 38 and the seal member 36 is eliminated without being solidified. Therefore, since the opening side end portion 38 is easily separated from the seal member 36, the fuel chamber 37 can be used repeatedly.

  Similarly, the temporarily bonded state between the opening-side end 31 of the air chamber 30 and the seal member 36 is eliminated without being solidified, and the opening-side end 31 is easily separated from the seal member 36. Can be used repeatedly.

  Further, even when the temporarily bonded state between the opening side end portion 31 of the air chamber 30 and the seal member 36 is maintained, the fuel chamber 37 is separated, so that the sealing member is separated from the opening side end portion 31. Peeling 36 can be easily performed.

Therefore, according to the above embodiment, the following effects can be obtained.
(1) In the above-described embodiment, the electrolyte 34 has such a size that a portion outside the outer peripheral portions of the fuel electrode 35 and the air electrode 33 can be used as a seal surface portion. Then, the sealing member 36 is interposed between the opening side end portions 38 and 31 and the electrolyte 34 by the opening side end portion 38 of the fuel chamber 37 and the opening side end portion 31 of the air chamber 30, respectively. The electrolyte 34 is sandwiched between the seal surfaces. Therefore, the opening-side end portions 38 and 31 are in close contact with the electrolyte 34 having a dense structure via the seal member 36, so that leakage of the fuel gas N supplied at high pressure can be prevented.

  (2) In the above embodiment, the pressing spring 21 is provided as a biasing means for biasing the opening side end portion 31 of the air chamber 30 and the opening side end portion 38 of the fuel chamber 37 toward each other. The separation spring 20 is provided as a reverse biasing means that biases the pressing spring 21 in a direction opposite to the biasing direction. For this reason, after conducting a power generation test at a high temperature, the biasing force of the pressing spring 21 is released, and the opening side end 31 and the opening side end 38 are separated from each other by the biasing force of the separation spring 20. Can be energized. Then, even if each of the opening-side end portion 31 and the opening-side end portion 38 is in a temporarily bonded state with the seal member 36, the pressing force does not act when still in a high temperature atmosphere. Can be eliminated. Therefore, since the sealing member 36 can be easily separated from the fuel chamber 37 and the air chamber 30, the solid oxide fuel cell capable of repeatedly using the fuel chamber 37 and the air chamber 30 can be used. A cell power generation test apparatus can be provided.

  (3) In the above embodiment, the separation spring 20 and the pressing spring 21 are arranged outside the upper plate 11 a of the upper frame 11, are exposed to the outside of the upper plate 11 a, and are attached to the support member 17 connected to the fuel chamber 37. It was made to act on the force receiving portion 18. Therefore, since the separation spring 20 and the pressing spring 21 are not exposed to a high temperature atmosphere, adjustment and maintenance of each urging force can be easily performed.

  (4) In the above embodiment, the pushing member 19 is provided, and the hexagonal head 19d of the pushing member 19 is rotated forward to push in the end 21a of the pushing spring 21 and through the bias receiving portion 18. The separation spring 20 was compressed to generate each urging force. If the hexagonal head 19d of the pushing member 19 is reversely rotated to release the pushing, only the urging force of the separation spring 20 can be operated. Therefore, a pressing force is applied between the opening end 31 of the air chamber 30 and the opening end 38 of the fuel chamber 37 and the seal member 36 by forward and reverse rotation of the hexagonal head 19 d of the pushing member 19. Or a separation force can be easily applied.

(Example of change)
In addition, the said embodiment can also be changed and actualized as follows.
When the downward force is applied to the support member 17 via the biasing receiving portion 18 by the pressing spring 21, the pressing spring 21 is compressed at the same time, but the lower surface portion 18a of the biasing receiving portion 18 and By making the separation spring 20 in an uncompressed state with the upper plate 11a, the pressing spring 21 is prevented from receiving a reverse biasing force by the separation spring 20. In this case, the urging receiving portion 18 is a hexagonal nut-like body that can be screwed into the screw portion formed on the support member 17 without being integrated with the support member 17. In addition, when an upward force is applied to the support member 17 via the urging receiving portion 18, the urging receiving portion 18 having a hexagonal nut shape is rotated forward after removing the pressing spring 21. By doing so, it is possible to compress the separation spring 20 and to apply an upward force to the support member 17 by the reaction force.
• Two types of compression springs were used as the biasing means and reverse biasing means, but a pneumatic cylinder with a rod that can be advanced and retracted should be used.
-Although two types of compression springs were used as the biasing means and the reverse biasing means, two types of hollow cylindrical bodies made of synthetic resin elastic bodies should be used.
Of the right and left positioning pins 24, the conducting portion 24b of the right positioning pin 24 and the fuel electrode 35 are conducted, and the conducting portion 24d of the left positioning pin 24 and the air electrode 33 are conducted, but one positioning pin The conduction part 24b is provided in the upper part of 24, and the conduction part 24d is provided in the lower part.
The concave portion 30d is formed in the air accommodating chamber 30c of the air chamber 30, but the supply pipe 7a and the discharge pipe 7b are piped so as to face the air accommodating chamber 30c without forming the concave portion 30d.
The seal member 36 is made of silver, but the seal member 36 is not limited to silver, and a metal, glass, or the like that softens under the temperature conditions during the test is appropriately selected. For example, borosilicate glass, zircon frit, or alumina silicate Use B203 etc. When a member having a large electric resistance is used as the seal member 36, it is necessary to dispose a conductive material for the conduction between the air electrode 33 and the conduction portion 24d, and for the conduction between the fuel electrode 35 and the conduction portion 24b. It is necessary to arrange a conductive material.
The fuel chamber 37 is disposed above and the air chamber 30 is disposed below, but the fuel chamber 37 is disposed below and the air chamber 30 is disposed above.

  A ... Air, N ... Fuel gas, 17 ... Support member, 18 ... Biasing receiving portion, 19 ... Pushing member, 21a ... End, 30 ... Air chamber, 31, 38 ... Open side end, 33 ... Air electrode 34 ... Electrolyte, 35 ... Fuel electrode, 36 ... Seal member, 37 ... Fuel chamber.

Claims (5)

In a power generation test apparatus for a solid oxide fuel cell, in which a fuel electrode is stacked on one surface of a plate-like electrolyte and an air electrode is stacked on the other surface, a box-shaped lower frame and upper frame are Each of the electrolytes that are closed to each other with the openings facing each other and housed therein have seal face portions for sealing outside the outer peripheral portions of the fuel electrode and the air electrode, respectively. The opening side end of the fuel chamber to which the fuel gas is supplied and the opening side end of the air electrode gas chamber to which the air electrode is supplied and the air electrode gas is supplied part and a sealing member is interposed between the electrolyte, wherein the electrolyte in the sealing surface portion so as to be clamped, while the open end of the chamber air electrode gas so as to be exposed to the upper frame outside portion Provided with a biasing means and the open end of the fuel chamber urges toward each other, the reverse biasing means for biasing the reverse direction provided to the biasing direction of the biasing means, with the The biasing means applies a biasing force in a direction from the fuel electrode to the air electrode with respect to one surface of the biasing receiving portion formed on the support member connected to the fuel chamber and exposed to the outside of the upper frame. And the reverse biasing means applies a biasing force in the direction from the air electrode to the fuel electrode with respect to the other surface of the bias receiving portion of the solid oxide fuel cell. Power generation test equipment. In a power generation test apparatus for a solid oxide fuel cell, in which a fuel electrode is stacked on one surface of a plate-like electrolyte and an air electrode is stacked on the other surface, a box-shaped lower frame and upper frame are Each of the electrolytes that are closed to each other with the openings facing each other and housed therein have seal face portions for sealing outside the outer peripheral portions of the fuel electrode and the air electrode, respectively. The opening side end of the fuel chamber to which the fuel gas is supplied and the opening side end of the air electrode gas chamber to which the air electrode is supplied and the air electrode gas is supplied A seal member is interposed between the electrode and the electrolyte so that the electrolyte is sandwiched in the seal surface portion, while the opening side end of the air electrode gas chamber is exposed to the outside of the lower frame An urging means for urging in the direction in which the opening side end of the fuel chamber approaches each other, and a reverse urging means for urging the urging direction opposite to the urging direction of the urging means are provided. The urging means is applied in a direction from the air electrode to the fuel electrode with respect to one surface of the urging receiving portion formed on the support member connected to the air electrode gas chamber and exposed to the outside of the lower frame. The solid bias type fuel cell is characterized in that the reverse biasing means applies a biasing force in the direction from the fuel electrode to the air electrode with respect to the other surface of the bias receiving portion. Cell power generation test equipment. Each of the urging means and the reverse urging means is a compression spring formed of a wire material, and the reverse urging means expresses an urging force that is weaker than the urging force of the urging means. The power generation test apparatus for a solid oxide fuel cell according to claim 1 or 2, characterized in that: A pushing member that pushes the end of the biasing means opposite to the side that is in contact with the biasing receiving portion is provided, and the pushing of the pushing member resists the repulsive force of the reverse biasing means, The biasing means pushes the opening side end portion of the air electrode gas chamber and the opening side end portion of the fuel chamber through the support member into a portion sandwiching the electrolyte via the seal member. 3. A power generation test apparatus for a solid oxide fuel cell according to claim 1, wherein pressure is applied. The said reverse biasing means is maintaining the biasing force with respect to the other surface of the said biasing receiving part, when the said pushing member leaves | separates from the edge part of the said biasing means. Power generation test equipment for solid oxide fuel cell.

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