JP6079331B2 - Temperature detection system for high temperature fuel cells - Google Patents

Temperature detection system for high temperature fuel cells Download PDF

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JP6079331B2
JP6079331B2 JP2013053270A JP2013053270A JP6079331B2 JP 6079331 B2 JP6079331 B2 JP 6079331B2 JP 2013053270 A JP2013053270 A JP 2013053270A JP 2013053270 A JP2013053270 A JP 2013053270A JP 6079331 B2 JP6079331 B2 JP 6079331B2
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heat insulating
fuel cell
temperature
transmission member
detection system
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賢志 安井
賢志 安井
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Miura Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Description

本発明は、高温型燃料電池が発電するために必要な高温場を維持するための高温型燃料電池の温度検知システムに関する。   The present invention relates to a temperature detection system for a high-temperature fuel cell for maintaining a high-temperature field necessary for power generation by the high-temperature fuel cell.

燃料電池には、水素ガス及び空気が供給される。そして、供給された水素と空気中の酸素とが化学反応し、発電が行われる。例えば、ＳＯＦＣ（固体酸化物形燃料電池）の場合には、セラミックスのセルが用いられ、高温場で燃料ガスと酸化ガスとが化学反応することによって発電が行われる。   Hydrogen gas and air are supplied to the fuel cell. Then, the supplied hydrogen and oxygen in the air chemically react to generate power. For example, in the case of a SOFC (solid oxide fuel cell), a ceramic cell is used, and power generation is performed by a chemical reaction between a fuel gas and an oxidizing gas in a high temperature field.

燃料電池がＳＯＦＣ（固体酸化物形燃料電池）等の高温型の燃料電池により構成される場合には、燃料電池において発電を行う時の温度である運転温度は、７００℃〜１０００℃と高温である。また、燃料電池において発電を行うためには、この高温を維持する必要がある（例えば、特許文献１参照）。   When the fuel cell is composed of a high-temperature fuel cell such as a SOFC (solid oxide fuel cell), the operating temperature, which is the temperature when generating power in the fuel cell, is as high as 700 ° C to 1000 ° C. is there. Moreover, in order to generate electric power in a fuel cell, it is necessary to maintain this high temperature (for example, refer patent document 1).

特開２００６−４０８０４号公報JP 2006-40804 A

燃料電池において発電を行うための高温を維持して、セルを破損しないようにするためには、高温場の温度を検出するための種々のセンサが必要となる。これにより、燃料電池システムの制御が複雑化し、燃料電池システムが高コスト化する。   In order to maintain a high temperature for generating power in the fuel cell and prevent the cell from being damaged, various sensors for detecting the temperature in the high temperature field are required. This complicates the control of the fuel cell system and increases the cost of the fuel cell system.

また、高温場で熱電対を用いて高温場の温度を検出すると、熱電対の劣化が進行しやすい。また、劣化した熱電対を交換する際には、高温場に配置された燃料電池等を、常温まで冷却する必要があり、常温まで冷却されないと、劣化した熱電対の交換等のメンテナンスをすることはできない。   Moreover, when the temperature of a high temperature field is detected using a thermocouple in a high temperature field, deterioration of the thermocouple is likely to proceed. In addition, when replacing a deteriorated thermocouple, it is necessary to cool the fuel cell, etc., placed in a high temperature field to room temperature. If it is not cooled to room temperature, maintenance such as replacement of the deteriorated thermocouple should be performed. I can't.

本発明は、高温場において温度を検出せず、メンテナンスが容易で、高温型燃料電池が発電するために必要な高温場の維持を容易とする高温型燃料電池の温度検知システムを提供することを目的とする。   The present invention provides a temperature detection system for a high-temperature fuel cell that does not detect temperature in a high-temperature field, is easy to maintain, and can easily maintain a high-temperature field required for power generation by the high-temperature fuel cell. Objective.

本発明は、高温型燃料電池と、貫通孔が形成された断熱壁と前記断熱壁により取り囲まれた燃料電池収容空間とを有し、前記断熱壁により前記燃料電池収容空間が前記断熱壁の外部空間に対して断熱されると共に密閉され、前記燃料電池収容空間に前記高温型燃料電池が収納される容器と、金属により構成され、前記断熱壁の貫通孔を貫通して一端部が前記燃料電池収容空間内に配置され他端部が前記断熱壁の外部空間に配置された容器内温度伝達部材と、断熱材により構成され、前記容器内温度伝達部材の一端部から他端部に至るまで前記容器内温度伝達部材の外周を覆う伝達部材断熱材と、を備え、前記伝達部材断熱材は、前記断熱壁の貫通孔の開口の全周に亘って前記断熱壁に接続されている高温型燃料電池の温度検知システムに関する。 The present invention includes a high-temperature fuel cell, a heat insulating wall in which a through hole is formed, and a fuel cell housing space surrounded by the heat insulating wall, and the fuel cell housing space is outside the heat insulating wall by the heat insulating wall. A container that is insulated and sealed with respect to the space and in which the high-temperature fuel cell is housed in the fuel cell housing space and a metal, and has one end passing through the through hole of the heat insulating wall and the fuel cell. A container temperature transmission member disposed in the accommodation space and having the other end disposed in the outer space of the heat insulation wall, and a heat insulating material, and from the one end to the other end of the container temperature transmission member A high-temperature type fuel that is connected to the heat insulating wall over the entire circumference of the opening of the through hole of the heat insulating wall. Regarding battery temperature detection system .

また、前記伝達部材断熱材は、前記断熱壁の貫通孔の開口に圧入されることにより前記断熱壁に接続されていることが好ましい。また、前記伝達部材断熱材は、前記断熱壁と一体成形されていることが好ましい。   Moreover, it is preferable that the said transmission member heat insulating material is connected to the said heat insulation wall by press-fitting in the opening of the through-hole of the said heat insulation wall. Moreover, it is preferable that the said transmission member heat insulating material is integrally molded with the said heat insulation wall.

また、前記燃料電池収容空間に配置される前記伝達部材断熱材の周面が、耐熱性材料により取り囲まれることにより、前記伝達部材断熱材の外形は保持されていることが好ましい。   Moreover, it is preferable that the external shape of the said transmission member heat insulating material is hold | maintained by the surrounding surface of the said transmission member heat insulating material arrange | positioned in the said fuel cell accommodation space being surrounded by a heat resistant material.

また、前記断熱材は、珪藻土、又は、シリカ若しくはアルミナの微粒子により構成されていることが好ましい。   Moreover, it is preferable that the said heat insulating material is comprised by the diatomaceous earth or the microparticles | fine-particles of a silica or an alumina.

本発明によれば、高温場において温度を検出せず、メンテナンスが容易で、高温型燃料電池が発電するために必要な高温場の維持を容易とする高温型燃料電池の温度検知システムを提供することができる。   According to the present invention, there is provided a temperature detection system for a high-temperature fuel cell that does not detect temperature in a high-temperature field, is easy to maintain, and can easily maintain a high-temperature field required for power generation by the high-temperature fuel cell. be able to.

本発明の第１実施形態による高温型燃料電池の温度検知システム１を示す概略図である。1 is a schematic diagram showing a temperature detection system 1 for a high-temperature fuel cell according to a first embodiment of the present invention. 本発明の第１実施形態による高温型燃料電池の温度検知システム１の断熱壁２１と断熱管４０とを示す概略図である。It is the schematic which shows the heat insulation wall 21 and the heat insulation pipe | tube 40 of the temperature detection system 1 of the high temperature type fuel cell by 1st Embodiment of this invention. 本発明の第２実施形態による高温型燃料電池の温度検知システムの断熱壁１２１と断熱管１４０とを示す概略図である。It is the schematic which shows the heat insulation wall 121 and the heat insulation pipe | tube 140 of the temperature detection system of the high temperature type fuel cell by 2nd Embodiment of this invention. 本発明の第３実施形態による高温型燃料電池の温度検知システムの断熱壁２１と断熱管４０と形状保持管２５０とを示す概略図である。It is the schematic which shows the heat insulation wall 21, the heat insulation pipe | tube 40, and the shape maintenance pipe | tube 250 of the temperature detection system of the high temperature type fuel cell by 3rd Embodiment of this invention.

以下、本発明の第１実施形態に係る高温型燃料電池の温度検知システムについて図１〜図２を参照しながら説明する。図１は、本発明の第１実施形態による高温型燃料電池の温度検知システム１を示す概略図である。図２は、本発明の第１実施形態による高温型燃料電池の温度検知システム１の断熱壁２１と断熱管４０とを示す概略図である。   Hereinafter, a temperature detection system for a high-temperature fuel cell according to a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram showing a temperature detection system 1 for a high-temperature fuel cell according to a first embodiment of the present invention. FIG. 2 is a schematic view showing the heat insulation wall 21 and the heat insulation pipe 40 of the temperature detection system 1 of the high temperature fuel cell according to the first embodiment of the present invention.

図１に示すように、高温型燃料電池の温度検知システム１は、燃料電池１０と、容器２０と、容器内温度伝達部材としての金属ロッド３０と、伝達部材断熱材としての断熱管４０とを備えている。   As shown in FIG. 1, a temperature detection system 1 for a high-temperature fuel cell includes a fuel cell 10, a container 20, a metal rod 30 as an in-container temperature transmission member, and a heat insulating tube 40 as a transmission member heat insulating material. I have.

燃料電池１０は、高温型の燃料電池であるＳＯＦＣ（固体酸化物形燃料電池）である。燃料電池１０においては、水素と、空気中の酸素とが反応することにより、発電が行われる。燃料電池１０において発電を行う時の温度である運転温度は、７００℃〜１０００℃と高温である。燃料電池１０によって発電された電気は、パワーコンディショナ（図示せず）に送られ、ＡＣ電圧に変換される。   The fuel cell 10 is a SOFC (solid oxide fuel cell) that is a high-temperature fuel cell. In the fuel cell 10, electricity is generated by the reaction between hydrogen and oxygen in the air. The operating temperature, which is the temperature when generating power in the fuel cell 10, is as high as 700 ° C to 1000 ° C. The electricity generated by the fuel cell 10 is sent to a power conditioner (not shown) and converted into an AC voltage.

容器２０は、断熱壁２１により取り囲まれた燃料電池収容空間２３を有する中空の箱状を有している。断熱壁２１は、珪藻土や、シリカ又はアルミナの微粒子により構成された断熱材により構成されている。断熱壁２１の一部には貫通孔２２が形成されている。燃料電池収容空間２３には、燃料電池１０が収納される。貫通孔２２には、金属ロッド３０及び断熱管４０が貫通する。また、断熱管４０には金属ロッド３０が貫通する。これにより貫通孔２２は、塞がれている。従って、断熱壁２１、金属ロッド３０、及び断熱管４０により、燃料電池収容空間２３は、断熱壁２１の外部空間に対して断熱されると共に、密閉されている。   The container 20 has a hollow box shape having a fuel cell housing space 23 surrounded by a heat insulating wall 21. The heat insulation wall 21 is comprised with the heat insulating material comprised with the fine particle of diatomaceous earth, a silica, or an alumina. A through hole 22 is formed in a part of the heat insulating wall 21. The fuel cell 10 is housed in the fuel cell housing space 23. The metal rod 30 and the heat insulating tube 40 pass through the through hole 22. Further, the metal rod 30 penetrates the heat insulating tube 40. Thereby, the through hole 22 is blocked. Therefore, the fuel cell housing space 23 is insulated from the outer space of the heat insulation wall 21 and sealed by the heat insulation wall 21, the metal rod 30, and the heat insulation pipe 40.

また、燃料電池収容空間２３内には、燃焼炉等により構成される加熱装置（図示せず）が設けられている。加熱装置により加熱されることにより、燃料電池収容空間２３内は、７００℃〜１０００℃の高温場とされる。そして、燃料電池収容空間２３は、断熱壁２１の外部空間に対して断熱されているため、高温場は維持される。   In addition, a heating device (not shown) constituted by a combustion furnace or the like is provided in the fuel cell housing space 23. The fuel cell housing space 23 is heated to a high temperature field of 700 ° C. to 1000 ° C. by being heated by the heating device. And since the fuel cell accommodation space 23 is insulated with respect to the external space of the heat insulation wall 21, a high temperature field is maintained.

金属ロッド３０は、円柱状を有しており、熱伝導性を有する材料により構成されている。具体的には、金属ロッド３０は、銅、ニッケル、タングステン、金、銀、白金、鉄、チタン、ＳＵＳ鋼等により構成されており、これらを混合して構成してもよい。また、金属ロッド３０の表面には、耐酸化性向上のために、コバルトまたはニッケルをメッキしたものを使用してもよい。金属ロッド３０は、断熱壁２１の貫通孔２２を貫通している。金属ロッド３０の一端部は、燃料電池収容空間２３内の高温場であって、燃料電池１０の近傍の温度測定が必要な場所に配置されている。具体的には、金属ロッド３０の一端部は、燃料電池１０を構成するセルのスタックの表面や、加熱装置（図示せず）等の近傍に配置される。金属ロッド３０の他端部は、断熱壁２１の外部空間に配置されている。金属ロッド３０の他端部には、温度検出器３１が接続される。この温度検出器３１は、高温場では使用できず低温場で使用可能なサーモスタット等により構成されるものであり、温度変化によりＯＮ／ＯＦＦの切替えの制御を行うことができる。   The metal rod 30 has a cylindrical shape and is made of a material having thermal conductivity. Specifically, the metal rod 30 is made of copper, nickel, tungsten, gold, silver, platinum, iron, titanium, SUS steel, or the like, and these may be mixed. Further, the surface of the metal rod 30 may be plated with cobalt or nickel in order to improve oxidation resistance. The metal rod 30 passes through the through hole 22 of the heat insulating wall 21. One end of the metal rod 30 is a high temperature field in the fuel cell housing space 23 and is disposed in a place where temperature measurement in the vicinity of the fuel cell 10 is necessary. Specifically, one end portion of the metal rod 30 is disposed in the vicinity of a surface of a stack of cells constituting the fuel cell 10 or a heating device (not shown). The other end of the metal rod 30 is disposed in the external space of the heat insulating wall 21. A temperature detector 31 is connected to the other end of the metal rod 30. The temperature detector 31 includes a thermostat that cannot be used in a high temperature field but can be used in a low temperature field, and can control ON / OFF switching according to a temperature change.

断熱管４０は、筒状を有しており、容器２０の断熱壁２１と同一の断熱材、即ち、珪藻土や、シリカ又はアルミナの微粒子により構成された断熱材により構成されている。断熱管４０の外径は、後述のように断熱管４０が断熱壁２１の貫通孔２２の開口に圧入される前には、断熱壁２１の貫通孔２２の直径よりも僅かに大きい。断熱管４０は、断熱壁２１の貫通孔２２の開口に圧入されることにより、断熱壁２１の貫通孔２２の開口の全周に亘って、断熱壁２１に接続され固定されている。断熱管４０の内径は、金属ロッド３０の外径に一致している。断熱管４０は、金属ロッド３０の一端部から他端部に至るまで金属ロッド３０を覆っている。但し、金属ロッド３０の一端面、及び、当該一端面に接続されている周面の一部は、断熱管４０に覆われておらず、露出している。同様に、金属ロッド３０の他端面、及び、当該他端面に接続されている周面の一部は、断熱管４０に覆われておらず、露出している。   The heat insulating tube 40 has a cylindrical shape and is formed of the same heat insulating material as that of the heat insulating wall 21 of the container 20, that is, a heat insulating material formed of diatomaceous earth, silica or alumina fine particles. The outer diameter of the heat insulating tube 40 is slightly larger than the diameter of the through hole 22 of the heat insulating wall 21 before the heat insulating tube 40 is press-fitted into the opening of the through hole 22 of the heat insulating wall 21 as described later. The heat insulating tube 40 is connected and fixed to the heat insulating wall 21 over the entire circumference of the opening of the through hole 22 of the heat insulating wall 21 by being press-fitted into the opening of the through hole 22 of the heat insulating wall 21. The inner diameter of the heat insulating tube 40 matches the outer diameter of the metal rod 30. The heat insulating tube 40 covers the metal rod 30 from one end of the metal rod 30 to the other end. However, one end surface of the metal rod 30 and a part of the peripheral surface connected to the one end surface are not covered with the heat insulating tube 40 and are exposed. Similarly, the other end surface of the metal rod 30 and a part of the peripheral surface connected to the other end surface are not covered with the heat insulating tube 40 and are exposed.

上記構成の高温型燃料電池の温度検知システム１によれば以下の効果を得ることができる。
高温型燃料電池の温度検知システム１は、熱伝導性を有する材料により構成され、断熱壁２１の貫通孔２２を貫通して一端部が燃料電池収容空間２３内に配置され他端部が断熱壁２１の外部空間に配置された容器内温度伝達部材としての金属ロッド３０と、断熱材により構成され、金属ロッド３０の一端部から他端部に至るまで金属ロッド３０の外周を覆う伝達部材断熱材としての断熱管４０と、を備える。断熱管４０は、断熱壁２１の貫通孔２２の開口の全周に亘って断熱壁２１に接続されている。 According to the temperature detection system 1 of the high-temperature fuel cell having the above configuration, the following effects can be obtained.
The temperature detection system 1 for a high-temperature fuel cell is made of a material having thermal conductivity, passes through the through hole 22 of the heat insulating wall 21, one end is disposed in the fuel cell housing space 23, and the other end is the heat insulating wall. The metal rod 30 as a container temperature transmission member disposed in the external space 21 and a heat insulating material, and a transmission member heat insulating material that covers the outer periphery of the metal rod 30 from one end to the other end of the metal rod 30 And a heat insulating tube 40. The heat insulating tube 40 is connected to the heat insulating wall 21 over the entire circumference of the opening of the through hole 22 of the heat insulating wall 21.

このため、金属ロッド３０を介して、燃料電池収容空間２３内の高温場であって燃料電池１０の近傍の温度測定が必要な場所の大まかな温度を、高温場ではない低温の断熱壁２１の外部空間において、検出することができる。この結果、温度を検出するために、高温場では使用できず低温場で使用可能なサーモスタット等の温度検出器３１を用いることができ、所定の温度の閾値を境界としたＯＮとＯＦＦとの切替えの制御を、安価且つ簡素化された構成で実現することができる。   For this reason, the rough temperature of the place where the temperature measurement in the vicinity of the fuel cell 10 in the high temperature field in the fuel cell housing space 23 is necessary is made to pass through the metal rod 30 to the low temperature heat insulation wall 21 which is not the high temperature field. It can be detected in the external space. As a result, in order to detect the temperature, the temperature detector 31 such as a thermostat that cannot be used in a high temperature field but can be used in a low temperature field can be used, and switching between ON and OFF with a predetermined temperature threshold as a boundary. This control can be realized with an inexpensive and simplified configuration.

また、温度の検出を断熱壁２１の外部空間において行うことができるため、温度検出器３１のメンテナンスを断熱壁２１の外部空間において行うことができる。従って、温度検出器３１を交換する場合であっても、燃料電池収容空間２３内の高温場を一旦低温とする必要はなく、メンテナンスを容易とすることができる。また、このような構成により、高温型の燃料電池１０が発電するために必要な高温場の維持を、容易とすることができる。   Further, since the temperature can be detected in the outer space of the heat insulating wall 21, the maintenance of the temperature detector 31 can be performed in the outer space of the heat insulating wall 21. Therefore, even when the temperature detector 31 is replaced, the high temperature field in the fuel cell housing space 23 does not need to be once lowered, and the maintenance can be facilitated. Also, with such a configuration, it is possible to easily maintain a high temperature field necessary for the high temperature fuel cell 10 to generate electric power.

また、断熱管４０は、容器２０の断熱壁２１と同一の断熱材により構成されているため、断熱管４０と容器２０の断熱壁２１とを同一の熱膨張率とすることができる。このため、断熱管４０と容器２０の断熱壁２１との間に隙間が生ずることを抑えることができる。   Moreover, since the heat insulation pipe 40 is comprised with the heat insulation material same as the heat insulation wall 21 of the container 20, the heat insulation pipe 40 and the heat insulation wall 21 of the container 20 can be made into the same thermal expansion coefficient. For this reason, it can suppress that a clearance gap produces between the heat insulation pipe | tube 40 and the heat insulation wall 21 of the container 20. FIG.

また、伝達部材断熱材としての断熱管４０は、断熱壁２１の貫通孔２２の開口に圧入されることにより断熱壁２１に接続されている。このため、燃料電池収容空間２３を、断熱壁２１の外部空間に対して、確実に断熱すると共に、確実に密閉することができる。   Further, the heat insulating tube 40 as the transmission member heat insulating material is connected to the heat insulating wall 21 by being press-fitted into the opening of the through hole 22 of the heat insulating wall 21. For this reason, the fuel cell housing space 23 can be reliably insulated from the external space of the heat insulation wall 21 and can be reliably sealed.

また、断熱壁２１及び断熱管４０に用いられる断熱材は、珪藻土、又は、シリカ若しくはアルミナの微粒子により構成されており、材料の熱伝導率が低く、空気の入った微細な空隙を形成することから断熱の効果を高めることができる。   Moreover, the heat insulating material used for the heat insulating wall 21 and the heat insulating pipe 40 is made of diatomaceous earth, or fine particles of silica or alumina, and has a low thermal conductivity of the material and forms fine voids containing air. Therefore, the heat insulation effect can be enhanced.

次に、本発明の第２実施形態に係る高温型燃料電池の温度検知システムについて図３を参照しながら説明する。図３は、本発明の第２実施形態による高温型燃料電池の温度検知システムの断熱壁１２１と断熱管１４０とを示す概略図である。   Next, a temperature detection system for a high-temperature fuel cell according to a second embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic view showing a heat insulating wall 121 and a heat insulating tube 140 of a temperature detection system for a high temperature fuel cell according to a second embodiment of the present invention.

第２実施形態については、主として、第１実施形態と異なる点を中心に説明し、第１実施形態と同様な構成については同じ符号を付し、詳細な説明を省略する。第２実施形態において、特に説明しない点は、第１実施形態についての説明が適宜適用される。また、第２実施形態においても、第１実施形態と同様な効果が奏される。   The second embodiment will be described mainly with respect to differences from the first embodiment, the same reference numerals are given to the same configurations as those of the first embodiment, and detailed description thereof will be omitted. In the second embodiment, the description of the first embodiment is appropriately applied to points that are not particularly described. Also in the second embodiment, the same effects as in the first embodiment are achieved.

第２実施形態に係る高温型燃料電池の温度検知システムでは、断熱壁１２１及び断熱管１４０の構成が第１実施形態に係る高温型燃料電池の温度検知システム１の断熱壁２１及び断熱管４０の構成とは異なる。これ以外の構成は第１実施形態に係る高温型燃料電池の温度検知システム１の構成と同一である。   In the temperature detection system for a high temperature fuel cell according to the second embodiment, the configuration of the heat insulation wall 121 and the heat insulation tube 140 is the same as that of the heat insulation wall 21 and the heat insulation tube 40 of the temperature detection system 1 for the high temperature fuel cell according to the first embodiment. Different from the configuration. Other configurations are the same as the configuration of the temperature detection system 1 of the high-temperature fuel cell according to the first embodiment.

伝達部材断熱材としての断熱管１４０は、断熱壁１２１と一体成形されている。断熱管１４０と断熱壁１２１とは、同一の断熱材料により構成されている。このように、伝達部材断熱材としての断熱管１４０は、断熱壁１２１と一体成形されているため、断熱管１４０及び断熱壁１２１の製造を容易とすることができる。   A heat insulating tube 140 as a transmission member heat insulating material is integrally formed with the heat insulating wall 121. The heat insulating tube 140 and the heat insulating wall 121 are made of the same heat insulating material. Thus, since the heat insulation pipe | tube 140 as a transmission member heat insulating material is integrally formed with the heat insulation wall 121, manufacture of the heat insulation pipe | tube 140 and the heat insulation wall 121 can be made easy.

次に、本発明の第３実施形態に係る高温型燃料電池の温度検知システムについて図４を参照しながら説明する。図４は、本発明の第３実施形態による高温型燃料電池の温度検知システムの断熱壁２１と断熱管４０と形状保持管２５０とを示す概略図である。   Next, a temperature detection system for a high temperature fuel cell according to a third embodiment of the present invention will be described with reference to FIG. FIG. 4 is a schematic view showing the heat insulating wall 21, the heat insulating tube 40, and the shape retaining tube 250 of the temperature detection system for a high temperature fuel cell according to the third embodiment of the present invention.

第３実施形態については、主として、第１実施形態と異なる点を中心に説明し、第１実施形態と同様な構成については同じ符号を付し、詳細な説明を省略する。第３実施形態において、特に説明しない点は、第１実施形態についての説明が適宜適用される。また、第３実施形態においても、第１実施形態と同様な効果が奏される。   The third embodiment will be described mainly with respect to differences from the first embodiment, the same reference numerals are given to the same configurations as those of the first embodiment, and detailed description thereof will be omitted. In the third embodiment, the description of the first embodiment is appropriately applied to points that are not particularly described. Also in the third embodiment, the same effects as in the first embodiment are achieved.

第３実施形態に係る高温型燃料電池の温度検知システムは、形状保持管２５０を有する点において、第１実施形態に係る高温型燃料電池の温度検知システム１とは異なる。これ以外の構成は第１実施形態に係る高温型燃料電池の温度検知システム１の構成と同一である。   The temperature detection system for a high-temperature fuel cell according to the third embodiment differs from the temperature detection system 1 for a high-temperature fuel cell according to the first embodiment in that it has a shape retaining tube 250. Other configurations are the same as the configuration of the temperature detection system 1 of the high-temperature fuel cell according to the first embodiment.

形状保持管２５０は、筒状を有しており、形状保持管２５０の内径は、断熱管４０の外径と同一である。形状保持管２５０は、燃料電池収容空間２３に配置される断熱管４０の部分の外表面であって、断熱管４０の軸方向における端面以外の周面の全体を、取り囲むようにして設けられている。形状保持管２５０は、燃料電池１０の運転温度である７００℃〜１０００℃程度の高温に耐えることができる耐熱性の材料により構成されている。具体的には、本実施形態では、形状保持管２５０は、例えばＳＵＳ鋼等により構成されている。このような形状保持管２５０により、断熱管４０の外郭を保持することができるため、燃料電池１０の運転温度である７００℃〜１０００℃程度の高温において、断熱管４０の外形を保持することができる。   The shape holding tube 250 has a cylindrical shape, and the inner diameter of the shape holding tube 250 is the same as the outer diameter of the heat insulating tube 40. The shape holding tube 250 is provided on the outer surface of the portion of the heat insulating tube 40 disposed in the fuel cell housing space 23 so as to surround the entire peripheral surface other than the end surface in the axial direction of the heat insulating tube 40. Yes. The shape holding tube 250 is made of a heat-resistant material that can withstand a high temperature of about 700 ° C. to 1000 ° C., which is the operating temperature of the fuel cell 10. Specifically, in this embodiment, the shape holding tube 250 is made of, for example, SUS steel. Since the outer shape of the heat insulating tube 40 can be held by such a shape holding tube 250, the outer shape of the heat insulating tube 40 can be held at a high temperature of about 700 ° C. to 1000 ° C. that is the operating temperature of the fuel cell 10. it can.

本発明は、上記実施形態に限定されることはなく、特許請求の範囲に記載された技術的範囲において変形が可能である。例えば、本実施形態では、燃料電池１０としてＳＯＦＣ（固体酸化物形燃料電池）が用いられたが、ＳＯＦＣに限定されない。高温型燃料電池であればよい。   The present invention is not limited to the above embodiment, and can be modified within the technical scope described in the claims. For example, in the present embodiment, an SOFC (solid oxide fuel cell) is used as the fuel cell 10, but is not limited to the SOFC. Any high-temperature fuel cell may be used.

また、容器及び断熱壁の形状は、本実施形態の容器２０及び断熱壁２１の形状に限定されない。また、容器内温度伝達部材として金属ロッド３０を用いたが、容器内温度伝達部材は、金属ロッド３０に限定されない。容器内温度伝達部材は、熱伝導性を有する材料により構成され、断熱壁２１の貫通孔２２を貫通して、一端部が燃料電池収容空間２３内に配置され他端部が断熱壁２１の外部空間に配置されていればよい。   Moreover, the shape of a container and a heat insulation wall is not limited to the shape of the container 20 and the heat insulation wall 21 of this embodiment. Further, although the metal rod 30 is used as the in-container temperature transmission member, the in-container temperature transmission member is not limited to the metal rod 30. The in-container temperature transmission member is made of a material having thermal conductivity, passes through the through hole 22 of the heat insulating wall 21, one end is disposed in the fuel cell housing space 23, and the other end is outside the heat insulating wall 21. What is necessary is just to be arrange | positioned in space.

また、伝達部材断熱材としての断熱管４０を用いたが、断熱管４０に限定されない。伝達部材断熱材は、断熱材により構成され、容器内温度伝達部材の一端部から他端部に至るまで容器内温度伝達部材の外周を覆う構成を有し、且つ、断熱壁２１の貫通孔２２の開口の全周に亘って断熱壁２１に接続されていればよい。   Moreover, although the heat insulation pipe | tube 40 as a transmission member heat insulating material was used, it is not limited to the heat insulation pipe | tube 40. FIG. The transmission member heat insulating material is formed of a heat insulating material, and has a configuration that covers the outer periphery of the container temperature transmission member from one end portion to the other end portion of the container temperature transmission member, and the through hole 22 of the heat insulation wall 21. What is necessary is just to be connected to the heat insulation wall 21 over the perimeter of this opening.

また、形状保持管２５０が用いられたが、形状保持管２５０に限定されない。燃料電池収容空間２３に配置される伝達部材断熱材の周面が、耐熱性材料により取り囲まれることにより、伝達部材断熱材の外形は保持されていればよい。   Further, although the shape holding tube 250 is used, the shape holding tube 250 is not limited thereto. It is only necessary that the outer shape of the transmission member heat insulating material be maintained by surrounding the peripheral surface of the transmission member heat insulating material disposed in the fuel cell housing space 23 with the heat resistant material.

１ 高温型燃料電池の温度検知システム
１０ 燃料電池
２０、１２０ 容器
２１、１２１ 断熱壁
２２ 貫通孔
３０ 金属ロッド（容器内温度伝達部材）
４０、１４０ 断熱管（伝達部材断熱材）
２５０ 形状保持管 DESCRIPTION OF SYMBOLS 1 Temperature detection system 10 of high temperature type fuel cell Fuel cell 20, 120 Container 21, 121 Heat insulation wall 22 Through-hole 30 Metal rod (Internal container temperature transmission member)
40,140 Insulation pipe (transmission member insulation)
250 shape retention tube

Claims (5)

高温型燃料電池と、
貫通孔が形成された断熱壁と前記断熱壁により取り囲まれた燃料電池収容空間とを有し、前記断熱壁により前記燃料電池収容空間が前記断熱壁の外部空間に対して断熱されると共に密閉され、前記燃料電池収容空間に前記高温型燃料電池が収納される容器と、
金属により構成され、前記断熱壁の貫通孔を貫通して一端部が前記燃料電池収容空間内に配置され他端部が前記断熱壁の外部空間に配置された容器内温度伝達部材と、
断熱材により構成され、前記容器内温度伝達部材の一端部から他端部に至るまで前記容器内温度伝達部材の外周を覆う伝達部材断熱材と、を備え、
前記伝達部材断熱材は、前記断熱壁の貫通孔の開口の全周に亘って前記断熱壁に接続されている高温型燃料電池の温度検知システム。 A high-temperature fuel cell;
A heat insulation wall formed with a through hole and a fuel cell housing space surrounded by the heat insulation wall, and the fuel cell housing space is insulated from the external space of the heat insulation wall and sealed by the heat insulation wall. A container in which the high-temperature fuel cell is stored in the fuel cell storage space;
An in-container temperature transmission member made of metal , penetrating through the through hole of the heat insulating wall and having one end disposed in the fuel cell housing space and the other end disposed in the external space of the heat insulating wall;
A heat insulating material, and a transmission member heat insulating material that covers the outer periphery of the internal temperature transmission member from one end to the other end of the internal temperature transmission member; and
The transmission member heat insulating material is a temperature detection system for a high-temperature fuel cell that is connected to the heat insulating wall over the entire circumference of the opening of the through hole of the heat insulating wall. 前記伝達部材断熱材は、前記断熱壁の貫通孔の開口に圧入されることにより前記断熱壁に接続されている請求項１に記載の高温型燃料電池の温度検知システム。   2. The temperature detection system for a high-temperature fuel cell according to claim 1, wherein the transmission member heat insulating material is connected to the heat insulating wall by being press-fitted into an opening of a through hole of the heat insulating wall. 前記伝達部材断熱材は、前記断熱壁と一体成形されている請求項１に記載の高温型燃料電池の温度検知システム。   The temperature detection system for a high-temperature fuel cell according to claim 1, wherein the transmission member heat insulating material is integrally formed with the heat insulating wall. 前記燃料電池収容空間に配置される前記伝達部材断熱材の周面が、耐熱性材料により取り囲まれることにより、前記伝達部材断熱材の外形は保持されている請求項１〜請求項３のいずれかに記載の高温型燃料電池の温度検知システム。   The external shape of the said transmission member heat insulating material is hold | maintained by the surrounding surface of the said transmission member heat insulating material arrange | positioned in the said fuel cell accommodation space being surrounded by heat resistant material. A temperature detection system for a high-temperature fuel cell as described in 1. 前記断熱材は、珪藻土、又は、シリカ若しくはアルミナの微粒子により構成されている請求項１〜請求項４のいずれかに記載の高温型燃料電池の温度検知システム。   The said heat insulating material is a temperature detection system of the high temperature type fuel cell in any one of Claims 1-4 comprised by the microparticles | fine-particles of diatomaceous earth or a silica or an alumina.
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