JP6952011B2

JP6952011B2 - Seal mechanism

Info

Publication number: JP6952011B2
Application number: JP2018101526A
Authority: JP
Inventors: 智広石田; 光黒崎; 浩之阪本; 勝浦　啓; 啓勝浦
Original assignee: Mitsubishi Heavy Industries Ltd
Current assignee: Mitsubishi Heavy Industries Ltd
Priority date: 2018-05-28
Filing date: 2018-05-28
Publication date: 2021-10-20
Anticipated expiration: 2038-05-28
Also published as: JP2019206984A

Description

本開示は、シール機構に関する。 The present disclosure relates to a sealing mechanism.

例えばコンプレッサーやガスタービン、蒸気タービンにおいて、内部流体の段間のリークや外部へのリークを防止するために、車室の水平フランジ面にシールプレートが設置される。しかし、通常は水平フランジ面及びシールプレートの組み立てに必要な公差が設けられているため、完全に流体のリークを防ぐことはできず、シールプレートの設置は主にリーク量の低減を目的としている。 For example, in compressors, gas turbines, and steam turbines, a seal plate is installed on the horizontal flange surface of the passenger compartment to prevent leakage between internal fluid stages and leakage to the outside. However, since the horizontal flange surface and the tolerances required for assembling the seal plate are usually provided, it is not possible to completely prevent fluid leakage, and the installation of the seal plate is mainly aimed at reducing the amount of leakage. ..

特許文献１には、軸受部と軸受部に嵌合する軸とを備える軸受構造において、軸受部の少なくとも一部を、低温域から中温域にかけて負の熱膨張率を有するとともに中温域から高温域にかけて正の熱膨張率を有する熱膨張材料で構成すること、又は、軸の少なくとも一部を、低温域から中温域にかけて正の熱膨張率を有するとともに中温域から高温域にかけて負の熱膨張率を有する熱膨張材料で構成することが記載されている。この構成により、低温域において軸と軸受部との間の摩擦を抑制できるとともに高温域においてオイルの流出及び油膜切れを抑制することができる。 Patent Document 1 describes that in a bearing structure including a bearing portion and a shaft fitted to the bearing portion, at least a part of the bearing portion has a negative coefficient of thermal expansion from a low temperature region to a medium temperature region and a medium temperature region to a high temperature region. It is composed of a thermal expansion material having a positive coefficient of thermal expansion, or at least a part of the shaft has a positive coefficient of thermal expansion from low temperature to medium temperature and a negative coefficient of thermal expansion from medium to high temperature. It is described that it is composed of a thermally expanding material having. With this configuration, friction between the shaft and the bearing portion can be suppressed in a low temperature region, and oil outflow and oil film breakage can be suppressed in a high temperature region.

特開２００８−３０９１９９号公報Japanese Unexamined Patent Publication No. 2008-309199

しかしながら、特許文献１で使用される熱膨張材料として、逆ペロブスカイト構造を有するマンガン窒化物、タングステン酸ジルコニウム、シリコン酸化物等が挙げられており、このような材料は高価であるためシール機構が高コストになってしまうといった問題点があった。 However, examples of the thermal expansion material used in Patent Document 1 include manganese nitride having an inverted perovskite structure, zirconium tungate, silicon oxide, and the like, and such materials are expensive and therefore have a high sealing mechanism. There was a problem that it became a cost.

上述の事情に鑑みて、本開示の少なくとも１つの実施形態は、温度の上昇時に必要なシール性能を発揮できる安価なシール機構を提供することを目的とする。 In view of the above circumstances, at least one embodiment of the present disclosure aims to provide an inexpensive sealing mechanism capable of exhibiting the required sealing performance when the temperature rises.

（１）本発明の少なくとも１つの実施形態に係るシール機構は、
２つの部材の向かい合う対向面間に形成されたシール溝内に挿入されるシール機構であって、
前記シール機構は、
第１シール部材と、
前記第１シール部材と対向するように配置された第２シール部材と、
前記第１シール部材と前記第２シール部材との間で少なくとも部分的に形成された空間内に配置されて前記シール機構の変形の核となる変形核部材であって、線膨張係数の異なる複数の材料のそれぞれから形成された複数の棒状部材及び板状部材を組み合わせて構成されるとともに前記第１シール部材及び前記第２シール部材のそれぞれに固定された変形核部材と
を備え、
前記変形核部材は温度の上昇に伴って、前記シール溝の横断面における少なくとも１方向に収縮し、
前記第１シール部材及び前記第２シール部材のそれぞれは、前記変形核部材の収縮に伴って前記シール溝の内面又は前記対向面に当接する当接面を含む。 (1) The sealing mechanism according to at least one embodiment of the present invention is
It is a sealing mechanism that is inserted into a sealing groove formed between the facing surfaces of two members.
The sealing mechanism is
With the first seal member
A second seal member arranged so as to face the first seal member,
A plurality of deformed core members arranged in a space formed at least partially between the first seal member and the second seal member and serving as the core of deformation of the seal mechanism and having different linear expansion coefficients. It is composed of a combination of a plurality of rod-shaped members and plate-shaped members formed from each of the materials of the above, and also includes a deformed core member fixed to each of the first seal member and the second seal member.
As the temperature rises, the deformed core member contracts in at least one direction in the cross section of the seal groove.
Each of the first seal member and the second seal member includes an abutting surface that abuts on the inner surface or the facing surface of the seal groove as the deformed core member contracts.

上記（１）の構成によると、変形核部材が温度の上昇に伴って収縮すると、その収縮に伴って第１シール部材及び第２シール部材のそれぞれに形成された当接面がシール溝の内面又は対向面に当接することにより、温度の上昇時に必要なシール性能を発揮することができる。また、第１シール部材及び第２シール部材は温度の上昇時に耐え得る材料で形成することができ、変形核部材は、温度の上昇時に耐え得るとともに線膨張係数の異なる複数の材料から形成することができ、特別高価な材料を必要としないので、シール機構を安価に提供することができる。 According to the configuration of (1) above, when the deformed core member contracts as the temperature rises, the contact surfaces formed on each of the first seal member and the second seal member due to the contraction are the inner surfaces of the seal groove. Alternatively, by abutting on the facing surface, the required sealing performance can be exhibited when the temperature rises. Further, the first seal member and the second seal member can be formed of a material that can withstand a rise in temperature, and the deformed core member can be formed of a plurality of materials that can withstand a rise in temperature and have different coefficients of linear expansion. And since no specially expensive material is required, the sealing mechanism can be provided at low cost.

（２）いくつかの実施形態では、上記（１）の構成において、
前記第１シール部材は、板状の第１部分及び板状の第２部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記第２シール部材は、前記第１部分に対向する板状の第３部分及び前記第２部分に対向する板状の第４部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記変形核部材は、前記第１部分及び前記第３部分のそれぞれに固定され、温度の上昇に伴って、前記第１部分及び前記第３部分間の距離が減少するように収縮し、
前記変形核部材の収縮に伴って、前記第１部分との接続部に対向する前記第２部分の縁部及び前記第３部分との接続部に対向する前記第４部分の縁部が前記シール溝の内面又は前記対向面に当接し、
前記当接面は、前記第２部分の前記縁部及び前記第４部分の前記縁部のそれぞれに形成されている。 (2) In some embodiments, in the configuration of (1) above,
The first seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped first portion and a plate-shaped second portion to each other.
The second seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped third portion facing the first portion and a plate-shaped fourth portion facing the second portion to each other. Have and
The deformed core member is fixed to each of the first portion and the third portion, and contracts so that the distance between the first portion and the third portion decreases as the temperature rises.
With the contraction of the deformed core member, the edge portion of the second portion facing the connection portion with the first portion and the edge portion of the fourth portion facing the connection portion with the third portion are sealed. In contact with the inner surface of the groove or the facing surface,
The contact surface is formed on each of the edge portion of the second portion and the edge portion of the fourth portion.

上記（２）の構成によると、第１シール部材の第１部分及び第２シール部材の第３部分間の距離が減少するような変形核部材の収縮に伴って、第２部分の縁部及び第４部分の縁部のそれぞれに形成された当接面がシール溝の内面又は対向面に当接することによりシールが行われることから、温度の上昇前には、第２部分の縁部又は第４部分の縁部の少なくとも一方とシール溝の内面又は対向面との間にクリアランスを設けることができるので、シール機構の組み立てに必要な公差を十分に確保しても、温度の上昇時に必要なシール性能を発揮することができる。 According to the configuration of (2) above, the edge portion of the second portion and the edge portion of the second portion and the contraction of the deformed core member such that the distance between the first portion of the first seal member and the third portion of the second seal member is reduced. Since the sealing is performed by contacting the contact surfaces formed on the edges of the fourth portion with the inner surface or the facing surface of the seal groove, the edges or the second portion of the second portion are before the temperature rises. Since a clearance can be provided between at least one of the four edges and the inner surface or the facing surface of the seal groove, it is necessary when the temperature rises even if the tolerance required for assembling the seal mechanism is sufficiently secured. Can demonstrate sealing performance.

（３）いくつかの実施形態では、上記（２）の構成において、
前記変形核部材はさらに、温度の上昇に伴って、前記第２部分及び前記第４部分間の距離が増加するように膨張し、前記変形核部材の膨張に伴って、前記変形核部材に面する前記第２部分及び前記第４部分それぞれの内側表面とは反対側の外側表面のそれぞれが前記シール溝の内面又は前記対向面に当接し、
前記当接面はさらに、前記第２部分の前記外側表面及び前記第４部分の前記外側表面のそれぞれに形成されている。 (3) In some embodiments, in the configuration of (2) above,
The deformed core member further expands so that the distance between the second portion and the fourth portion increases as the temperature rises, and the deformed core member faces the deformed core member as the temperature rises. Each of the outer surface opposite to the inner surface of each of the second portion and the fourth portion abuts on the inner surface or the facing surface of the seal groove.
The contact surface is further formed on the outer surface of the second portion and the outer surface of the fourth portion, respectively.

上記（３）の構成によると、第２部分の縁部及び第４部分の縁部に形成された当接面がシール溝の内面又は対向面に当接することによりシールが行われるだけでなく、第１シール部材の第２部分及び第２シール部材の第４部分間の距離が増加するような変形核部材の膨張に伴って、第２部分及び第４部分それぞれの外側表面に形成された当接面がシール溝の内面又は対向面に当接することによってもシールが行われるので、温度の上昇時に必要なシール性能を向上することができる。 According to the configuration of (3) above, not only the sealing is performed by the contact surfaces formed on the edge portion of the second portion and the edge portion of the fourth portion contacting the inner surface or the facing surface of the seal groove. Along with the expansion of the deformed core member such that the distance between the second portion of the first seal member and the fourth portion of the second seal member increases, the contact formed on the outer surface of each of the second portion and the fourth portion. Since the sealing is also performed by the contact surface contacting the inner surface or the facing surface of the sealing groove, the sealing performance required when the temperature rises can be improved.

（４）いくつかの実施形態では、上記（３）の構成において、
前記第２部分の前記外側表面及び前記第４部分の前記外側表面の少なくとも一方には、前記シール溝の内面又は前記対向面に対して凹んだ凹部が形成されている。 (4) In some embodiments, in the configuration of (3) above,
At least one of the outer surface of the second portion and the outer surface of the fourth portion is formed with a recess recessed with respect to the inner surface or the facing surface of the seal groove.

上記（４）の構成によると、第２部分の外側表面及び第４部分の外側表面の少なくとも一方に凹部を形成することにより、第２部分の外側表面及び第４部分の外側表面の少なくとも一方に形成された当接面のシール溝の内面又は対向面への当接圧力が高まるので、温度の上昇時に必要なシール性能を向上することができる。 According to the configuration of (4) above, by forming recesses on at least one of the outer surface of the second portion and the outer surface of the fourth portion, the outer surface of the second portion and the outer surface of the fourth portion are formed on at least one of them. Since the contact pressure of the formed contact surface with the inner surface or the facing surface of the seal groove is increased, the sealing performance required when the temperature rises can be improved.

（５）いくつかの実施形態では、上記（１）〜（４）のいずれかの構成において、
前記空間を密封する密封部材をさらに備える。 (5) In some embodiments, in any of the configurations (1) to (4) above,
A sealing member for sealing the space is further provided.

変形核部材は複数の棒状部材及び板状部材を組み合わせて構成されているので、シール溝内に流入したガスが、変形核部材を通り抜けることによって、第１シール部材と第２シール部材との間に形成された空間を介してシール機構を通り抜けてしまい、ガスがリークするおそれがある。しかし、上記（５）の構成によると、密封部材によって空間が密封されているので、ガスがシール機構を通り抜けることを抑制し、ガスがリークするおそれを低減することができる。 Since the deformed core member is composed of a combination of a plurality of rod-shaped members and plate-shaped members, the gas flowing into the seal groove passes through the deformed core member, and thus is between the first seal member and the second seal member. There is a risk of gas leaking through the sealing mechanism through the space formed in. However, according to the configuration of (5) above, since the space is sealed by the sealing member, it is possible to suppress the gas from passing through the sealing mechanism and reduce the possibility of the gas leaking.

（６）いくつかの実施形態では、上記（５）の構成において、
前記密封部材は、前記第１シール部材と前記第２シール部材と前記変形核部材とを内部に含むチューブ形状を有する。 (6) In some embodiments, in the configuration of (5) above,
The sealing member has a tube shape including the first sealing member, the second sealing member, and the deformed core member inside.

上記（６）の構成によると、第１シール部材と第２シール部材と変形核部材とを内部に含むようなチューブ形状に密封部材を形成することにより、密封部材の設計を簡略にすることができる。 According to the configuration of (6) above, the design of the sealing member can be simplified by forming the sealing member in a tube shape including the first sealing member, the second sealing member, and the deformed core member inside. can.

（７）いくつかの実施形態では、上記（５）の構成において、
前記密封部材は、前記第１シール部材及び前記第２シール部材と共に前記空間を密封する。 (7) In some embodiments, in the configuration of (5) above,
The sealing member seals the space together with the first sealing member and the second sealing member.

上記（７）の構成によると、第１シール部材と第２シール部材と変形核部材とを内部に含むようなチューブ形状に密封部材を形成する場合に比べて、密封部材を小さくできるので、密封部材のコストを低下することができる。 According to the configuration of (7) above, the sealing member can be made smaller than the case where the sealing member is formed in a tube shape including the first sealing member, the second sealing member, and the deformed core member inside, so that the sealing member can be sealed. The cost of the member can be reduced.

（８）いくつかの実施形態では、上記（２）の構成において、
前記変形核部材はさらに、前記第２部分及び前記第４部分のそれぞれに固定され、
前記変形核部材はさらに、温度の上昇に伴って前記第２部分及び前記第４部分間の距離が減少するように収縮して、前記第１部分が前記第４部分に当接するとともに前記第３部分が前記第２部分に当接する。 (8) In some embodiments, in the configuration of (2) above,
The deformed core member is further fixed to each of the second portion and the fourth portion.
The deformed core member further contracts so that the distance between the second portion and the fourth portion decreases as the temperature rises, so that the first portion abuts on the fourth portion and the third portion. The portion abuts on the second portion.

変形核部材は複数の棒状部材及び板状部材を組み合わせて構成されているので、シール溝内に流入したガスが、変形核部材を通り抜けることによって、第１シール部材と第２シール部材との間に形成された空間を介してシール機構を通り抜けてしまい、ガスがリークするおそれがある。しかし、上記（８）の構成によると、変形核部材が温度の上昇に伴って第２部分及び第４部分間の距離が減少するように収縮して、第１部分が第４部分に当接するとともに第３部分が第２部分に当接することにより、空間を介してシール機構を通り抜けようとするガスをシールするので、ガスがシール機構を通り抜けることを抑制し、ガスがリークするおそれを低減することができる。 Since the deformed core member is composed of a combination of a plurality of rod-shaped members and plate-shaped members, the gas flowing into the seal groove passes through the deformed core member, and thus is between the first seal member and the second seal member. There is a risk of gas leaking through the sealing mechanism through the space formed in. However, according to the configuration of (8) above, the deformed core member contracts so that the distance between the second portion and the fourth portion decreases as the temperature rises, and the first portion abuts on the fourth portion. At the same time, the third portion abuts on the second portion to seal the gas that is about to pass through the sealing mechanism through the space, so that the gas is suppressed from passing through the sealing mechanism and the risk of gas leakage is reduced. be able to.

（９）いくつかの実施形態では、上記（１）の構成において、
前記第１シール部材は、板状の第１部分及び板状の第２部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記第２シール部材は、前記第１部分に対向する板状の第３部分及び前記第２部分に対向する板状の第４部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記変形核部材は、前記第１部分及び前記第３部分のそれぞれに固定され、温度の上昇に伴って、前記第１部分及び前記第３部分間の距離が減少するように収縮し、
前記シール溝の内面は、前記第２部分と鋭角の角度をなす当接内面部を含み、
前記第２部分は、前記変形核部材の収縮に伴って前記当接内面部に当接する第２当接面を含み、
前記第２当接面が前記当接内面部に当接することによって前記第１シール部材が前記第２シール部材を押して、前記第１部分が前記第４部分に当接するとともに前記第３部分が前記第２部分に当接し、前記第４部分の表面のうち前記変形核部材に面する内側表面とは反対側の外側表面が前記シール溝の内面に当接し、
前記当接面は、前記外側表面と、前記第３部分との接続部に対向する前記第４部分の縁部とのそれぞれに形成されている。 (9) In some embodiments, in the configuration of (1) above,
The first seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped first portion and a plate-shaped second portion to each other.
The second seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped third portion facing the first portion and a plate-shaped fourth portion facing the second portion to each other. Have and
The deformed core member is fixed to each of the first portion and the third portion, and contracts so that the distance between the first portion and the third portion decreases as the temperature rises.
The inner surface of the seal groove includes a contact inner surface portion at an acute angle with the second portion.
The second portion includes a second contact surface that comes into contact with the contact inner surface portion as the deformed core member contracts.
When the second contact surface comes into contact with the contact inner surface portion, the first seal member pushes the second seal member, the first portion abuts on the fourth portion, and the third portion abuts. The outer surface of the fourth portion, which is opposite to the inner surface facing the deformed nuclear member, abuts on the inner surface of the seal groove.
The contact surface is formed on each of the outer surface and the edge portion of the fourth portion facing the connection portion with the third portion.

上記（９）の構成によると、第２当接面の当接内面部への当接と、第４部分の外側表面のシール溝の内面への当接と、第４部分の縁部のシール溝の内面又は対向面への当接とによりシールが行われるので、第２部分の縁部及び第４部分の縁部がシール溝の内面又は対向面に当接することによりシールが行われる構成（例えば、上記（２）の構成）に比べて、温度の上昇時に必要なシール性能を向上することができる。 According to the configuration of (9) above, the contact of the second contact surface with the inner surface of the contact, the contact of the outer surface of the fourth portion with the inner surface of the seal groove, and the seal of the edge of the fourth portion. Since sealing is performed by contacting the inner surface or facing surface of the groove, the sealing is performed by contacting the edge portion of the second portion and the edge portion of the fourth portion with the inner surface or facing surface of the sealing groove ( For example, as compared with the configuration (2) above, the sealing performance required when the temperature rises can be improved.

また、変形核部材は複数の棒状部材及び板状部材を組み合わせて構成されているので、シール溝内に流入したガスが、変形核部材を通り抜けることによって、第１シール部材と第２シール部材との間に形成された空間を介してシール機構を通り抜けてしまい、ガスがリークするおそれがある。しかし、上記（９）の構成によると、第２当接面が当接内面部に当接することによって第１シール部材が第２シール部材を押して、第１部分が第４部分に当接するとともに第３部分が第２部分に当接することにより、空間を介してシール機構を通り抜けようとするガスをシールするので、ガスがシール機構を通り抜けることを抑制し、ガスがリークするおそれを低減することができる。 Further, since the deformed core member is composed of a combination of a plurality of rod-shaped members and plate-shaped members, the gas flowing into the seal groove passes through the deformed core member to form the first seal member and the second seal member. There is a risk of gas leaking through the sealing mechanism through the space formed between the two. However, according to the configuration of (9) above, when the second contact surface comes into contact with the contact inner surface portion, the first seal member pushes the second seal member, the first portion abuts on the fourth portion, and the first portion comes into contact with the fourth portion. By contacting the third part with the second part, the gas that is about to pass through the sealing mechanism is sealed through the space, so that the gas can be suppressed from passing through the sealing mechanism and the risk of gas leakage can be reduced. can.

（１０）いくつかの実施形態では、上記（９）の構成において、
前記第４部分の前記外側表面には、前記シール溝の内面に対して凹んだ凹部が形成されている。 (10) In some embodiments, in the configuration of (9) above,
A recess recessed with respect to the inner surface of the seal groove is formed on the outer surface of the fourth portion.

上記（１０）の構成によると、第４部分の外側表面に凹部を形成することにより、第４部分の外側表面に形成された当接面のシール溝の内面への当接圧力が高まるので、温度の上昇時に必要なシール性能を向上することができる。 According to the configuration of (10) above, by forming the recess on the outer surface of the fourth portion, the contact pressure of the contact surface formed on the outer surface of the fourth portion on the inner surface of the seal groove is increased. The required sealing performance can be improved when the temperature rises.

本開示の少なくとも１つの実施形態によれば、変形核部材が温度の上昇に伴って収縮すると、その収縮に伴って第１シール部材及び第２シール部材のそれぞれに形成された当接面がシール溝の内面又は対向面に当接することにより、温度の上昇時に必要なシール性能を発揮することができる。また、第１シール部材及び第２シール部材は温度の上昇時に耐え得る材料で形成することができ、変形核部材は、温度の上昇時に耐え得るとともに線膨張係数の異なる複数の材料から形成することができ、特別高価な材料を必要としないので、シール機構を安価に提供することができる。 According to at least one embodiment of the present disclosure, when the deformed core member contracts as the temperature rises, the contact surfaces formed on the first seal member and the second seal member respectively seal with the contraction. By abutting on the inner surface or the facing surface of the groove, the required sealing performance can be exhibited when the temperature rises. Further, the first seal member and the second seal member can be formed of a material that can withstand a rise in temperature, and the deformed core member can be formed of a plurality of materials that can withstand a rise in temperature and have different coefficients of linear expansion. And since no specially expensive material is required, the sealing mechanism can be provided at low cost.

本開示の実施形態１に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 1 of this disclosure. メタマテリアルの構成の一例を示す図である。It is a figure which shows an example of the structure of a metamaterial. 本開示の実施形態１に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 1 of this disclosure. 本開示の実施形態１に係るシール機構の変形例１の断面図である。It is sectional drawing of the modification 1 of the sealing mechanism which concerns on Embodiment 1 of this disclosure. 本開示の実施形態１に係るシール機構の変形例２の断面図である。It is sectional drawing of the modification 2 of the sealing mechanism which concerns on Embodiment 1 of this disclosure. 本開示の実施形態１に係るシール機構の変形例３の断面図である。It is sectional drawing of the modification 3 of the sealing mechanism which concerns on Embodiment 1 of this disclosure. 本開示の実施形態２に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 2 of this disclosure. 本開示の実施形態２に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 2 of this disclosure. 本開示の実施形態２に係るシール機構の変形例の断面図である。It is sectional drawing of the modification of the seal mechanism which concerns on Embodiment 2 of this disclosure. 本開示の実施形態３に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 3 of this disclosure. 本開示の実施形態３に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 3 of this disclosure. 本開示の実施形態４に係るシール機構の断面図である。It is sectional drawing of the sealing mechanism which concerns on Embodiment 4 of this disclosure. 本開示の実施形態４に係るシール機構の断面図である。It is sectional drawing of the sealing mechanism which concerns on Embodiment 4 of this disclosure. 本開示の実施形態５に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 5 of this disclosure. 本開示の実施形態５に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 5 of this disclosure. 本開示の実施形態６に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 6 of this disclosure. 本開示の実施形態６に係るシール機構の断面図である。It is sectional drawing of the seal mechanism which concerns on Embodiment 6 of this disclosure.

以下、図面を参照して本発明のいくつかの実施形態について説明する。ただし、本発明の範囲は以下の実施形態に限定されるものではない。以下の実施形態に記載されている構成部品の寸法、材質、形状、その相対配置などは、本発明の範囲をそれにのみ限定する趣旨ではなく、単なる説明例に過ぎない。 Hereinafter, some embodiments of the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the following embodiments. The dimensions, materials, shapes, relative arrangements, and the like of the components described in the following embodiments are not intended to limit the scope of the present invention only to them, but are merely explanatory examples.

（実施形態１）
図１に示されるように、本開示の実施形態１に係るシール機構１０は、コンプレッサーやガスタービン、蒸気タービン等の装置に含まれる２つの部材、すなわち上フランジ１及び下フランジ２の向かい合う対向面１ａ，２ａ間に形成されたシール溝３内に挿入されている。シール溝３は、対向面１ａに形成された溝部３ａと、対向面２ａに形成された溝部３ｂとが互いに向かい合うようにして構成されている。装置が稼働しているときに、対向面１ａ，２ａ間には、わずかな隙間４が形成される。 (Embodiment 1)
As shown in FIG. 1, the sealing mechanism 10 according to the first embodiment of the present disclosure has two members included in a device such as a compressor, a gas turbine, and a steam turbine, that is, facing surfaces of an upper flange 1 and a lower flange 2. It is inserted into the seal groove 3 formed between 1a and 2a. The seal groove 3 is configured such that the groove portion 3a formed on the facing surface 1a and the groove portion 3b formed on the facing surface 2a face each other. When the device is in operation, a slight gap 4 is formed between the facing surfaces 1a and 2a.

シール機構１０は、第１シール部材１１と、第１シール部材１１と対向するように配置された第２シール部材１２と、板形状の変形核部材１３とを備えている。第１シール部材１１は、板状の第１部分１５及び板状の第２部分１６が互いに接続されて構成された略Ｌ字状の断面形状を有している。第２シール部材１２は、第１部分１５に対向する板状の第３部分１７及び第２部分１６に対向する板状の第４部分１８が互いに接続されて構成された略Ｌ字状の断面形状を有している。変形核部材１３は、後述する原理でシール機構１０が変形する際の変形の核となる部材である。 The seal mechanism 10 includes a first seal member 11, a second seal member 12 arranged so as to face the first seal member 11, and a plate-shaped deformed core member 13. The first seal member 11 has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped first portion 15 and a plate-shaped second portion 16 to each other. The second seal member 12 has a substantially L-shaped cross section formed by connecting a plate-shaped third portion 17 facing the first portion 15 and a plate-shaped fourth portion 18 facing the second portion 16 to each other. It has a shape. The deformed core member 13 is a member that becomes the core of deformation when the seal mechanism 10 is deformed according to the principle described later.

尚、本開示において、「板形状」とは、矩形の外形を有する板形状だけを意味するのではなく、任意の外形を有する板形状を意味することとする。例えば、シール機構１０が回転シャフトの周方向に沿って設けられる場合には、回転シャフトが挿入可能な孔が形成された円板形状も、この「板形状」に含まれる。 In the present disclosure, the "plate shape" does not mean only a plate shape having a rectangular outer shape, but also means a plate shape having an arbitrary outer shape. For example, when the sealing mechanism 10 is provided along the circumferential direction of the rotating shaft, the "plate shape" also includes a disk shape in which a hole into which the rotating shaft can be inserted is formed.

第１部分１５と第２部分１６と第３部分１７と第４部分１８とはそれぞれ、変形核部材１３に面する内側表面１５ａ，１６ａ，１７ａ，１８ａを含み、内側表面１５ａ，１６ａ，１７ａ，１８ａは、第１シール部材１１と第２シール部材１２との間に空間１４を画定している。変形核部材１３は、空間１４内に配置され、第１部分１５の内側表面１５ａ及び第３部分１７の内側表面１７ａのそれぞれに固定されている。変形核部材１３と内側表面１５ａ及び１７ａとは溶接によって固定してもよいし、第１シール部材１１と第２シール部材１２と変形核部材１３とを３次元積層造形等で一体的に形成してもよい。 The first portion 15, the second portion 16, the third portion 17, and the fourth portion 18 include inner surfaces 15a, 16a, 17a, 18a facing the deformed core member 13, respectively, and the inner surfaces 15a, 16a, 17a, respectively. 18a defines a space 14 between the first seal member 11 and the second seal member 12. The deformed core member 13 is arranged in the space 14 and is fixed to each of the inner surface 15a of the first portion 15 and the inner surface 17a of the third portion 17. The deformed core member 13 and the inner surfaces 15a and 17a may be fixed by welding, or the first seal member 11, the second seal member 12, and the deformed core member 13 are integrally formed by three-dimensional laminated molding or the like. You may.

図１では、変形核部材１３と内側表面１６ａ及び１８ａとの間のそれぞれに隙間が形成されているが、変形核部材１３と内側表面１６ａ及び１８ａとがそれぞれ互いに接触してもよい。変形核部材１３と内側表面１６ａ及び１８ａとがそれぞれ互いに接触している場合には、両者を固定してもよい。 In FIG. 1, gaps are formed between the deformed core member 13 and the inner surfaces 16a and 18a, respectively, but the deformed core member 13 and the inner surfaces 16a and 18a may come into contact with each other, respectively. When the deformed core member 13 and the inner surfaces 16a and 18a are in contact with each other, both may be fixed.

第１シール部材１１及び第２シール部材１２はそれぞれ、温度の上昇時に耐え得る材料、例えば、ステンレス鋼等の一般的な金属で形成することができる。変形核部材１３は、温度の上昇時に耐え得る線膨張係数の異なる複数の材料（例えば、ステンレス鋼及びアルミ）のそれぞれから形成された複数の棒状部材及び板状部材を組み合わせて構成されている。変形核部材１３を形成するこのような材料を、本開示ではメタマテリアルと称する。 The first seal member 11 and the second seal member 12 can each be formed of a material that can withstand an increase in temperature, for example, a general metal such as stainless steel. The deformed core member 13 is composed of a combination of a plurality of rod-shaped members and plate-shaped members formed of each of a plurality of materials (for example, stainless steel and aluminum) having different linear expansion coefficients that can withstand an increase in temperature. Such a material forming the deformed core member 13 is referred to as a metamaterial in the present disclosure.

図２に、メタマテリアルの構造の一例を示す。メタマテリアル２０は、複数の棒状部材及び板状部材から形成されたベース２１，２２，２３と、各ベース２１，２２，２３間をつなぐ複数の棒状部材から形成されたビーム２４とを互いに組み合わせて構成されている。ベース２１，２２，２３を形成する材料と、ビーム２４を形成する材料とは、互いに線膨張係数の異なる材料であり、例えば前者の材料の線膨張係数が後者の材料の線膨張係数よりも大きくなるような２つの材料を用いることができる。また、ベース２１，２２，２３のそれぞれを、線膨張係数の異なる材料で形成するとともにビーム２４のそれぞれを線膨張係数の異なる材料のそれぞれで形成してもよい。すなわち、線膨張係数の異なる３つ以上の材料でメタマテリアル２０を構成することもできる。 FIG. 2 shows an example of the structure of the metamaterial. The metamaterial 20 combines a base 21, 22, 23 formed of a plurality of rod-shaped members and plate-shaped members and a beam 24 formed of a plurality of rod-shaped members connecting the bases 21, 22, 23 with each other. It is configured. The material forming the bases 21, 22, 23 and the material forming the beam 24 are materials having different linear expansion coefficients. For example, the linear expansion coefficient of the former material is larger than the linear expansion coefficient of the latter material. Two materials can be used. Further, each of the bases 21, 22, and 23 may be formed of a material having a different coefficient of linear expansion, and each of the beams 24 may be formed of a material having a different coefficient of linear expansion. That is, the metamaterial 20 can be composed of three or more materials having different coefficients of linear expansion.

メタマテリアル２０は、使用する材料の種類を変更することや、ベース２１，２２，２３の厚さや形状、ビーム２４の太さや長さ等を調節することにより、温度による変形の方向及び変形量を調節することができる。例えば、メタマテリアル２０は、温度の上昇に伴い、１方向に収縮するとともに他方向に膨張したり、異なる２方向以上の膨張・収縮を調整できる。この実施形態１では、適当なメタマテリアル２０を用いることにより、図１に示されるように、変形核部材１３は、温度の上昇に伴って、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向に収縮するように構成されている。 The metamaterial 20 can change the direction and amount of deformation due to temperature by changing the type of material used, adjusting the thickness and shape of the bases 21 and 22, 23, the thickness and length of the beam 24, and the like. Can be adjusted. For example, the metamaterial 20 can contract in one direction and expand in the other direction as the temperature rises, or can adjust expansion / contraction in two or more different directions. In the first embodiment, by using an appropriate metamaterial 20, as shown in FIG. 1, the deformed core member 13 has the first portion 15 and the first portion 15 in the cross section of the seal groove 3 as the temperature rises. It is configured to contract in a direction in which the distance between the three portions 17 decreases.

図３に示されるように、シール機構１０の温度が上昇し、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に変形核部材１３が収縮すると、対向面１ａ及び２ａと交差する方向に、すなわち対向面１ａ及び２ａに対して垂直な方向に第１シール部材１１及び第２シール部材１２が互いに対する相対移動を行うことにより、第２部分１６及び第４部分１８のそれぞれが、シール溝３の内面に当接する。第２部分１６は、第１部分１５との接続部１６ｂに対向する縁部１６ｃに当接面１９が形成されており、縁部１６ｃに形成された当接面１９がシール溝３の内面に当接する。一方、第４部分１８は、第３部分１７との接続部１８ｂに対向する縁部１８ｃに当接面１９が形成されており、縁部１８ｃに形成された当接面１９がシール溝３の内面に当接する。 As shown in FIG. 3, the deformed core member increases in the direction in which the temperature of the seal mechanism 10 rises and the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3 (direction of arrow A). When 13 contracts, the first seal member 11 and the second seal member 12 move relative to each other in the direction intersecting the facing surfaces 1a and 2a, that is, in the direction perpendicular to the facing surfaces 1a and 2a. Each of the second portion 16 and the fourth portion 18 abuts on the inner surface of the seal groove 3. The second portion 16 has a contact surface 19 formed on the edge portion 16c facing the connection portion 16b with the first portion 15, and the contact surface 19 formed on the edge portion 16c is formed on the inner surface of the seal groove 3. Contact. On the other hand, in the fourth portion 18, the contact surface 19 is formed on the edge portion 18c facing the connection portion 18b with the third portion 17, and the contact surface 19 formed on the edge portion 18c is the seal groove 3. Contact the inner surface.

第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接した状態で、隙間４を（矢印Ｂの方向に）流通するガスがシール溝３内に流入すると、シール溝３内において各当接面１９がシール溝３の内面に当接する部分と変形核部材１３とがガスの流れをシールするので、ガスのシール機構１０の通り抜けが抑制される。 With the contact surfaces 19 formed on the edge 16c of the second portion 16 and the edge 18c of the fourth portion 18 in contact with the inner surface of the seal groove 3, the gap 4 is formed (in the direction of arrow B). When the flowing gas flows into the seal groove 3, the portion where each contact surface 19 abuts on the inner surface of the seal groove 3 and the deformed core member 13 seal the gas flow in the seal groove 3, so that the gas is sealed. The passage of the mechanism 10 is suppressed.

このように、変形核部材１３が温度の上昇に伴って収縮すると、その収縮に伴って第１シール部材１１及び第２シール部材１２のそれぞれに形成された当接面１９がシール溝３の内面に当接することにより、温度の上昇時に必要なシール性能を発揮することができる。また、第１シール部材１１及び第２シール部材１２は温度の上昇時に耐え得る材料で形成することができ、変形核部材１３は、温度の上昇時に耐え得るとともに線膨張係数の異なる複数の材料から形成することができ、特別高価な材料を必要としないので、シール機構１０を安価に提供することができる。 As described above, when the deformed core member 13 contracts as the temperature rises, the contact surfaces 19 formed on each of the first seal member 11 and the second seal member 12 due to the contraction become the inner surface of the seal groove 3. By contacting with, the required sealing performance can be exhibited when the temperature rises. Further, the first seal member 11 and the second seal member 12 can be formed of a material that can withstand a rise in temperature, and the deformed core member 13 can be made of a plurality of materials that can withstand a rise in temperature and have different coefficients of linear expansion. Since it can be formed and does not require a particularly expensive material, the sealing mechanism 10 can be provided at low cost.

また、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少するような変形核部材１３の収縮に伴って、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接することによりシールが行われることから、温度の上昇前には、図１に示されるように、第２部分１６の縁部１６ｃ又は第４部分１８の縁部１８ｃの少なくとも一方とシール溝３の内面との間にクリアランス５を設けることができるので、シール機構１０の組み立てに必要な公差を十分に確保しても、温度の上昇時に必要なシール性能を発揮することができる。 Further, as the deformed core member 13 contracts so that the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3, the edge portion 16c and the fourth portion 18 of the second portion 16 Since the contact surface 19 formed on each of the edge portions 18c abuts on the inner surface of the seal groove 3 to perform sealing, the second portion 16 is shown before the temperature rises, as shown in FIG. Since the clearance 5 can be provided between at least one of the edge portion 16c of the fourth portion 18 or the edge portion 18c of the fourth portion 18 and the inner surface of the seal groove 3, a sufficient tolerance required for assembling the seal mechanism 10 is secured. However, the required sealing performance can be exhibited when the temperature rises.

実施形態１では、シール溝３は、対向面１ａに形成された溝部３ａと、対向面２ａに形成された溝部３ｂとが互いに向かい合うようにして構成され、第１シール部材１１及び第２シール部材１２はそれぞれ、略Ｌ字状の断面形状を有する形態であり、変形核部材１３は板状であったが、これらの形態に限定するものではない。以下に、実施形態１の変形例１〜３を説明する。尚、以下の変形例１〜３のそれぞれにおいて、実施形態１の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 In the first embodiment, the seal groove 3 is configured such that the groove portion 3a formed on the facing surface 1a and the groove portion 3b formed on the facing surface 2a face each other, and the first sealing member 11 and the second sealing member Each of the 12 has a substantially L-shaped cross-sectional shape, and the deformed core member 13 has a plate shape, but the present invention is not limited to these forms. Hereinafter, modifications 1 to 3 of the first embodiment will be described. In each of the following modifications 1 to 3, the same reference numerals as those of the constituent requirements of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

（変形例１）
図４に示されるように、実施形態１の変形例１に係るシール機構１０は、対向面２ａに形成された溝部３ｂのみから構成されるシール溝３内に設けられている。すなわち、対向面１ａには溝部は形成されていない。その他の構成は実施形態１と同じである。 (Modification example 1)
As shown in FIG. 4, the seal mechanism 10 according to the first modification of the first embodiment is provided in the seal groove 3 formed only on the groove portion 3b formed on the facing surface 2a. That is, no groove is formed on the facing surface 1a. Other configurations are the same as those in the first embodiment.

変形例１では、シール機構１０の温度が上昇し、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に変形核部材１３が収縮すると、第１シール部材１１及び第２シール部材１２が互いに対する相対移動を行うことにより、第２部分１６の縁部１６ｃに形成された当接面１９が対向面１ａに当接し、第４部分１８の縁部１８ｃに形成された当接面１９がシール溝３の内面に当接する。隙間４を（矢印Ｂの方向に）流通するガスは、第２部分１６の縁部１６ｃに形成された当接面１９が対向面１ａに当接する部分によってシールされ、隙間４を流通するガスがシール溝３内に流入した場合に、シール溝３内において、第４部分１８の縁部１８ｃに形成された当接面１９がシール溝３の内面に当接する部分と変形核部材１３とがガスの流れをシールするので、ガスのシール機構１０の通り抜けが抑制される。 In the modified example 1, the deformed core member 13 contracts in the direction in which the temperature of the seal mechanism 10 rises and the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3 (direction of arrow A). Then, the first seal member 11 and the second seal member 12 move relative to each other, so that the contact surface 19 formed on the edge portion 16c of the second portion 16 comes into contact with the facing surface 1a, and the fourth portion The contact surface 19 formed on the edge portion 18c of 18 comes into contact with the inner surface of the seal groove 3. The gas flowing through the gap 4 (in the direction of the arrow B) is sealed by the portion where the contact surface 19 formed on the edge portion 16c of the second portion 16 abuts on the facing surface 1a, and the gas flowing through the gap 4 is sealed. When flowing into the seal groove 3, the portion where the contact surface 19 formed on the edge portion 18c of the fourth portion 18 abuts on the inner surface of the seal groove 3 and the deformed core member 13 are gas in the seal groove 3. Since the flow of the gas is sealed, the passage of the gas sealing mechanism 10 is suppressed.

尚、対向面１ａに形成された溝部３ａのみからシール溝３が構成される形態であってもよい。この場合は、温度の上昇に伴って変形核部材１３が収縮すると、第２部分１６の縁部１６ｃに形成された当接面１９がシール溝３の内面に当接し、第４部分１８の縁部１８ｃに形成された当接面１９が対向面２ａに当接する。 The seal groove 3 may be formed only from the groove portion 3a formed on the facing surface 1a. In this case, when the deformed core member 13 contracts as the temperature rises, the contact surface 19 formed on the edge portion 16c of the second portion 16 comes into contact with the inner surface of the seal groove 3, and the edge of the fourth portion 18 is formed. The contact surface 19 formed on the portion 18c comes into contact with the facing surface 2a.

（変形例２）
実施形態１では、第２部分１６及び第４部分１８のそれぞれが、対向面１ａ及び２ａと交差するように、すなわち対向面１ａ及び２ａに対して垂直となるように、シール溝３内に第１シール部材１１及び第２シール部材１２が設けられていたのに対し、実施形態１の変形例２に係るシール機構１０では、図５に示されるように、第１部分１５及び第３部分１７のそれぞれが、対向面１ａ及び２ａと交差するように、すなわち対向面１ａ及び２ａに対して垂直となるように、シール溝３内に第１シール部材１１及び第２シール部材１２が設けられている。その他の構成は実施形態１と同じである。 (Modification 2)
In the first embodiment, the second portion 16 and the fourth portion 18 are located in the seal groove 3 so as to intersect the facing surfaces 1a and 2a, that is, to be perpendicular to the facing surfaces 1a and 2a. While the 1 seal member 11 and the 2nd seal member 12 were provided, in the seal mechanism 10 according to the modified example 2 of the first embodiment, as shown in FIG. 5, the first portion 15 and the third portion 17 are provided. The first seal member 11 and the second seal member 12 are provided in the seal groove 3 so that each of the above surfaces intersects the facing surfaces 1a and 2a, that is, perpendicular to the facing surfaces 1a and 2a. There is. Other configurations are the same as those in the first embodiment.

変形例２では、シール機構１０の温度が上昇し、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に変形核部材１３が収縮すると、第１シール部材１１及び第２シール部材１２が互いに対する相対移動を行うことにより、第２部分１６の縁部１６ｃに形成された当接面１９及び第４部分１８の縁部１８ｃに形成された当接面１９がそれぞれシール溝３の内面に当接する。隙間４を（矢印Ｂの方向に）流通するガスがシール溝３内に流入すると、シール溝３内において各当接面１９がシール溝３の内面に当接する部分と変形核部材１３とがガスの流れをシールするので、ガスのシール機構１０の通り抜けが抑制される。 In the second modification, the deformed core member 13 contracts in the direction in which the temperature of the seal mechanism 10 rises and the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3 (direction of arrow A). Then, the first seal member 11 and the second seal member 12 move relative to each other to form the contact surface 19 formed on the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18. The contact surfaces 19 are brought into contact with the inner surface of the seal groove 3, respectively. When the gas flowing through the gap 4 (in the direction of the arrow B) flows into the seal groove 3, the portion of the seal groove 3 where each contact surface 19 abuts on the inner surface of the seal groove 3 and the deformed core member 13 become gas. Since the flow of the gas is sealed, the passage of the gas sealing mechanism 10 is suppressed.

（変形例３）
図６に示されるように、実施形態１の変形例３に係るシール機構１０は、板状の第１シール部材１１と、板状の第２シール部材１２と、変形核部材１３とを備えている。変形核部材１３は、第１シール部材１１と第２シール部材１２との間において第１シール部材１１の内側表面１１ａと第２シール部材１２の内側表面１２ａとによって画定された空間１４内に配置されている。変形核部材１３は、内側表面１１ａに向かって突出する突出部１３ａと、内側表面１２ａに向かって突出する突出部１３ｂとを有しており、突出部１３ａ及び１３ｂがそれぞれ内側表面１１ａ及び１２ａに固定されている。その他の構成は実施形態１と同じである。 (Modification example 3)
As shown in FIG. 6, the sealing mechanism 10 according to the modified example 3 of the first embodiment includes a plate-shaped first sealing member 11, a plate-shaped second sealing member 12, and a deformed core member 13. There is. The deformed core member 13 is arranged in the space 14 defined by the inner surface 11a of the first seal member 11 and the inner surface 12a of the second seal member 12 between the first seal member 11 and the second seal member 12. Has been done. The deformed core member 13 has a projecting portion 13a projecting toward the inner surface 11a and a projecting portion 13b projecting toward the inner surface 12a, and the projecting portions 13a and 13b are formed on the inner surfaces 11a and 12a, respectively. It is fixed. Other configurations are the same as those in the first embodiment.

変形例３では、シール機構１０の温度が上昇し、シール溝３の横断面において突出部１３ａ及び１３ｂ間の距離が減少する方向（矢印Ａの方向）に変形核部材１３が収縮すると、第１シール部材１１及び第２シール部材１２が互いに対する相対移動を行うことにより、第１シール部材１１の縁部１１ｃに形成された当接面１９及び第２シール部材１２の縁部１２ｃに形成された当接面１９がそれぞれシール溝３の内面に当接する。隙間４を（矢印Ｂの方向に）流通するガスがシール溝３内に流入すると、シール溝３内において各当接面１９がシール溝３の内面に当接する部分と変形核部材１３とがガスの流れをシールするので、ガスのシール機構１０の通り抜けが抑制される。 In the third modification, when the temperature of the seal mechanism 10 rises and the deformed core member 13 contracts in the direction in which the distance between the protrusions 13a and 13b decreases in the cross section of the seal groove 3 (direction of arrow A), the first By moving the seal member 11 and the second seal member 12 relative to each other, the contact surface 19 formed on the edge portion 11c of the first seal member 11 and the edge portion 12c of the second seal member 12 are formed. Each of the contact surfaces 19 comes into contact with the inner surface of the seal groove 3. When the gas flowing through the gap 4 (in the direction of the arrow B) flows into the seal groove 3, the portion of the seal groove 3 where each contact surface 19 abuts on the inner surface of the seal groove 3 and the deformed core member 13 become gas. Since the flow of the gas is sealed, the passage of the gas sealing mechanism 10 is suppressed.

変形例１のシール溝３内に変形例２のシール機構１０を設けることもできるし、変形例１のシール溝３内に変形例３のシール機構１０を設けることもできる。尚、以下で説明する実施形態２〜６のそれぞれにおいて、特に言及する場合を除いて、実施形態１は、実施形態１の変形例１〜３のそれぞれと、変形例１及び変形例２の組み合わせと、変形例１及び変形例３の組み合わせとを含むものとする。 The seal mechanism 10 of the modification 2 can be provided in the seal groove 3 of the modification 1, or the seal mechanism 10 of the modification 3 can be provided in the seal groove 3 of the modification 1. In each of the second to sixth embodiments described below, unless otherwise specified, the first embodiment is a combination of each of the modified examples 1 to 3 of the embodiment 1 and the modified examples 1 and 2. And the combination of the modification 1 and the modification 3 are included.

（実施形態２）
次に、実施形態２に係るシール機構について説明する。実施形態２に係るシール機構は、実施形態１に対して、温度上昇時の変形核部材１３の変形形態を変更したものである。尚、実施形態２において、実施形態１の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 (Embodiment 2)
Next, the sealing mechanism according to the second embodiment will be described. The sealing mechanism according to the second embodiment is a modification of the first embodiment in which the deformed core member 13 is deformed when the temperature rises. In the second embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

図７に示されるように、本開示の実施形態２に係るシール機構１０では、変形核部材１３は、第２部分１６の内側表面１６ａ及び第４部分１８の内側表面１８ａに接しているが、第２部分１６の内側表面１６ａ及び第４部分１８の内側表面１８ａに固定してもよい。変形核部材１３は、適当なメタマテリアルを用いることにより、温度の上昇に伴って、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に収縮するとともに第２部分１６及び第４部分１８間の距離が増加する方向（矢印Ｃの方向）に膨張するように構成されている。その他の構成は実施形態１と同じである。 As shown in FIG. 7, in the sealing mechanism 10 according to the second embodiment of the present disclosure, the deformed core member 13 is in contact with the inner surface 16a of the second portion 16 and the inner surface 18a of the fourth portion 18. It may be fixed to the inner surface 16a of the second portion 16 and the inner surface 18a of the fourth portion 18. By using an appropriate metamaterial, the deformed core member 13 has a direction in which the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3 as the temperature rises (direction of arrow A). ), And expands in the direction in which the distance between the second portion 16 and the fourth portion 18 increases (direction of arrow C). Other configurations are the same as those in the first embodiment.

図８に示されるように、シール機構１０の温度が上昇し、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に変形核部材１３が収縮すると、実施形態１と同様の原理で、第２部分１６の縁部１６ｃに形成された当接面１９及び第４部分１８の縁部１８ｃに形成された当接面１９がそれぞれシール溝３の内面に当接する。 As shown in FIG. 8, the deformed core member increases in the direction in which the temperature of the sealing mechanism 10 rises and the distance between the first portion 15 and the third portion 17 decreases in the cross section of the sealing groove 3 (direction of arrow A). When 13 is contracted, the contact surface 19 formed on the edge portion 16c of the second portion 16 and the contact surface 19 formed on the edge portion 18c of the fourth portion 18 are sealed by the same principle as in the first embodiment. It abuts on the inner surface of the groove 3.

また、シール機構１０の温度が上昇し、シール溝３の横断面において第２部分１６及び第４部分１８間の距離が増加する方向（矢印Ｃの方向）に変形核部材１３が膨張すると、対向面１ａ及び２ａに沿った方向に第１シール部材１１及び第２シール部材１２が互いに対する相対移動を行うことにより、第２部分１６及び第４部分１８のそれぞれが、シール溝３の内面に当接する。第２部分１６には、内側表面１６ａとは反対側の外側表面１６ｄにも当接面１９が形成されており、外側表面１６ｄに形成された当接面１９がシール溝３の内面に当接する。一方、第４部分１８には、内側表面１８ａとは反対側の外側表面１８ｄにも当接面１９が形成されており、外側表面１８ｄに形成された当接面１９がシール溝３の内面に当接する。 Further, when the temperature of the seal mechanism 10 rises and the deformed core member 13 expands in the direction in which the distance between the second portion 16 and the fourth portion 18 increases (in the direction of arrow C) in the cross section of the seal groove 3, they face each other. As the first seal member 11 and the second seal member 12 move relative to each other in the direction along the surfaces 1a and 2a, each of the second portion 16 and the fourth portion 18 hits the inner surface of the seal groove 3. Get in touch. In the second portion 16, a contact surface 19 is also formed on the outer surface 16d opposite to the inner surface 16a, and the contact surface 19 formed on the outer surface 16d abuts on the inner surface of the seal groove 3. .. On the other hand, in the fourth portion 18, a contact surface 19 is also formed on the outer surface 18d opposite to the inner surface 18a, and the contact surface 19 formed on the outer surface 18d is on the inner surface of the seal groove 3. Contact.

第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９と、第２部分１６の外側表面１６ｄ及び第４部分１８の外側表面１８ｄのそれぞれに形成された当接面１９とがシール溝３の内面に当接した状態で、隙間４を（矢印Ｂの方向に）流通するガスがシール溝３内に流入すると、シール溝３内において各当接面１９がシール溝３の内面に当接する部分と変形核部材１３とがガスの流れをシールするので、ガスのシール機構１０の通り抜けが抑制される。 The contact surface 19 is formed on each of the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18, and is formed on the outer surface 16d of the second portion 16 and the outer surface 18d of the fourth portion 18, respectively. When the gas flowing through the gap 4 (in the direction of the arrow B) flows into the seal groove 3 in a state where the contact surface 19 is in contact with the inner surface of the seal groove 3, each contact is made in the seal groove 3. Since the portion where the surface 19 abuts on the inner surface of the seal groove 3 and the deformed core member 13 seal the gas flow, the passage of the gas seal mechanism 10 is suppressed.

このように、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接することによりシールが行われるだけでなく、第２部分１６及び第４部分１８間の距離が増加するような変形核部材１３の膨張に伴って、第２部分１６及び第４部分１８それぞれの外側表面１６ｄ及び１８ｄに形成された当接面１９がシール溝３の内面に当接することによってもシールが行われるので、温度の上昇時に必要なシール性能を向上することができる。 In this way, not only the sealing is performed by the contact surface 19 formed on each of the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18 abuts on the inner surface of the seal groove 3. Contact surfaces formed on the outer surfaces 16d and 18d of the second portion 16 and the fourth portion 18, respectively, as the deformed core member 13 expands so that the distance between the second portion 16 and the fourth portion 18 increases. Since sealing is also performed when 19 comes into contact with the inner surface of the seal groove 3, it is possible to improve the sealing performance required when the temperature rises.

実施形態２では、図９に示されるように、外側表面１６ｄ及び１８ｄのそれぞれに、シール溝３の内面に対して凹んだ凹部３０を形成してもよい。外側表面１６ｄ及び１８ｄに凹部３０を形成することにより、外側表面１６ｄ及び１８ｄのそれぞれに形成された当接面１９のシール溝３の内面への当接圧力が高まるので、温度の上昇時に必要なシール性能を向上することができる。尚、図９では、外側表面１６ｄ及び１８ｄのそれぞれに凹部３０が形成されているが、外側表面１６ｄ及び１８ｄのいずれか一方のみに凹部３０を形成してもよい。また、外側表面１６ｄ又は１８ｄの少なくとも一方に複数の凹部３０を形成してもよい。 In the second embodiment, as shown in FIG. 9, recesses 30 recessed with respect to the inner surface of the seal groove 3 may be formed on the outer surfaces 16d and 18d, respectively. By forming the recesses 30 on the outer surfaces 16d and 18d, the contact pressure of the contact surfaces 19 formed on the outer surfaces 16d and 18d with respect to the inner surface of the seal groove 3 increases, which is necessary when the temperature rises. Sealing performance can be improved. In FIG. 9, recesses 30 are formed on the outer surfaces 16d and 18d, respectively, but recesses 30 may be formed on only one of the outer surfaces 16d and 18d. Further, a plurality of recesses 30 may be formed on at least one of the outer surface 16d or 18d.

（実施形態３）
次に、実施形態３に係るシール機構について説明する。実施形態３に係るシール機構は、実施形態１及び２のそれぞれに対して、空間１４を密封する密封部材を付加したものである。以下では、実施形態１の構成に密封部材を付加した構成で実施形態３を説明するが、実施形態２の構成に密封部材を付加することによって実施形態３を構成してもよい。尚、実施形態３において、実施形態１の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 (Embodiment 3)
Next, the sealing mechanism according to the third embodiment will be described. The sealing mechanism according to the third embodiment is provided with a sealing member for sealing the space 14 for each of the first and second embodiments. Hereinafter, the third embodiment will be described in which a sealing member is added to the configuration of the first embodiment, but the third embodiment may be configured by adding a sealing member to the configuration of the second embodiment. In the third embodiment, the same reference numerals as those of the constituent requirements of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

図１０に示されるように、本開示の実施形態３に係るシール機構１０は、第１シール部材１１と第２シール部材１２と変形核部材１３とを内部に含むようにチューブ形状に構成された密封部材４０をさらに備えている。密封部材４０は、温度の上昇時に耐え得るとともに密封部材４０内の変形核部材１３が昇温可能なように断熱効果の小さい材料で形成され、第１シール部材１１及び第２シール部材１２の互いに対する相対移動時に変形可能となるように薄肉状に形成され、さらに、密封部材４０の内部と外部との間のガスの出入りを遮断するように形成される必要がある。したがって、密封部材４０は例えば、温度の上昇時に耐え得る金属を用いて薄肉チューブ状に形成することができる。その他の構成は実施形態１と同じである。 As shown in FIG. 10, the sealing mechanism 10 according to the third embodiment of the present disclosure is configured in a tube shape so as to include the first sealing member 11, the second sealing member 12, and the deformed core member 13 inside. A sealing member 40 is further provided. The sealing member 40 is made of a material having a small heat insulating effect so that the deformed core member 13 in the sealing member 40 can withstand an increase in temperature and the temperature can be raised, and the first sealing member 11 and the second sealing member 12 are mutually formed. It needs to be formed to be thin so that it can be deformed when it moves relative to the seal member 40, and further, it needs to be formed so as to block the inflow and outflow of gas between the inside and the outside of the sealing member 40. Therefore, the sealing member 40 can be formed in a thin tube shape using, for example, a metal that can withstand an increase in temperature. Other configurations are the same as those in the first embodiment.

実施形態１では、図３に示されるように、隙間４を（矢印Ｂの方向に）流通するガスは、シール溝３内に流入すると、第２部分１６と第３部分１７との間の隙間を介して空間１４内に流入する。変形核部材１３を形成するメタマテリアル２０として、図２参照に記載されるように、複数の棒状部材及び板状部材を組み合わせて構成したものを使用すると、メタマテリアル２０の内部に微細な空隙が存在するため、空間１４内に流入したガスは、変形核部材１３を通り抜け、第１部分１５と第４部分１８との間の隙間を介して空間１４から流出することによって、シール機構１０を通り抜けてしまい、ガスがリークするおそれがある。 In the first embodiment, as shown in FIG. 3, when the gas flowing through the gap 4 (in the direction of the arrow B) flows into the seal groove 3, the gap between the second portion 16 and the third portion 17 is formed. It flows into the space 14 through the space 14. As the metamaterial 20 forming the deformed core member 13, as shown in FIG. 2, when a metamaterial composed of a combination of a plurality of rod-shaped members and plate-shaped members is used, fine voids are formed inside the metamaterial 20. Since it exists, the gas that has flowed into the space 14 passes through the deformed nuclear member 13 and flows out of the space 14 through the gap between the first portion 15 and the fourth portion 18 and thus passes through the sealing mechanism 10. There is a risk of gas leaking.

しかし、実施形態３では図１１に示されるように、シール機構１０の温度が上昇すると、密封部材４０の内部で実施形態１と同様の原理で、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９が密封部材４０を間に挟むようにしてシール溝３の内面に当接する。密封部材４０によって、シール溝３内のガスが空間１４内に流入できないので、ガスがシール機構１０を通り抜けることがない。シール機構１０は、上述したように、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９が密封部材４０を間に挟むようにしてシール溝３の内面に当接することによってガスをシールしているので、ガスがリークするおそれを低減することができる。 However, in the third embodiment, as shown in FIG. 11, when the temperature of the sealing mechanism 10 rises, the edge portion 16c and the fourth portion of the second portion 16 are formed inside the sealing member 40 by the same principle as in the first embodiment. The contact surfaces 19 formed on each of the edges 18c of the 18 come into contact with the inner surface of the seal groove 3 so as to sandwich the sealing member 40 in between. Since the gas in the seal groove 3 cannot flow into the space 14 due to the sealing member 40, the gas does not pass through the sealing mechanism 10. As described above, in the sealing mechanism 10, the contact surface 19 formed on each of the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18 sandwiches the sealing member 40 in the sealing groove 3. Since the gas is sealed by contacting the inner surface, the risk of gas leakage can be reduced.

実施形態３では、密封部材４０はチューブ形状を有していたが、後述する実施形態４の形態等のように様々な形状が可能である。しかし、実施形態３のように、第１シール部材１１と第２シール部材１２と変形核部材１３とを内部に含むようなチューブ形状に密封部材４０を形成すると、密封部材４０の設計を簡略にすることができる。 In the third embodiment, the sealing member 40 has a tube shape, but various shapes are possible as in the fourth embodiment described later. However, when the sealing member 40 is formed in a tube shape including the first sealing member 11, the second sealing member 12, and the deformed core member 13 as in the third embodiment, the design of the sealing member 40 is simplified. can do.

（実施形態４）
次に、実施形態４に係るシール機構について説明する。実施形態４に係るシール機構は、実施形態３に対して、密封部材４０の形状を変更したものである。尚、実施形態４において、実施形態３の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 (Embodiment 4)
Next, the sealing mechanism according to the fourth embodiment will be described. The sealing mechanism according to the fourth embodiment is a modification of the shape of the sealing member 40 with respect to the third embodiment. In the fourth embodiment, the same reference numerals as those of the constituent requirements of the third embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

図１２に示されるように、本開示の実施形態４に係るシール機構１０は、第２部分１６と第３部分１７との間の隙間４１を覆うように第２部分１６の縁部１６ｃ及び第３部分１７の外側表面１７ｄに接続された密封部材４０と、第１部分１５と第４部分１８との間の隙間４２を覆うように第１部分１５の外側表面１５ｄ及び第４部分１８の縁部１８ｃに接続された密封部材４０とをさらに備えている。密封部材４０は、第１シール部材１１及び第２シール部材１２と共に空間１４を密封することが可能である。密封部材４０は、実施形態３と同様に、温度の上昇時に耐え得る金属を用いて薄肉状に形成することができる。その他の構成は実施形態３と同じである。 As shown in FIG. 12, the sealing mechanism 10 according to the fourth embodiment of the present disclosure covers the edge portion 16c and the second portion 16c of the second portion 16 so as to cover the gap 41 between the second portion 16 and the third portion 17. The edges of the outer surface 15d and the fourth portion 18 of the first portion 15 so as to cover the gap 42 between the sealing member 40 connected to the outer surface 17d of the third portion 17 and the first portion 15 and the fourth portion 18. It further includes a sealing member 40 connected to the portion 18c. The sealing member 40 can seal the space 14 together with the first sealing member 11 and the second sealing member 12. Similar to the third embodiment, the sealing member 40 can be formed in a thin wall shape using a metal that can withstand an increase in temperature. Other configurations are the same as in the third embodiment.

図１３に示されるように、シール機構１０の温度が上昇すると、実施形態１と同様の原理で、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接する。密封部材４０によって、シール溝３内のガスが隙間４１を介して空間１４内に流入できず、空間１４内のガスが隙間４２を介して空間から流出できないので、ガスがシール機構１０を通り抜けることがない。シール機構１０は、上述したように、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接することによってガスをシールしているので、ガスがリークするおそれを低減することができる。 As shown in FIG. 13, when the temperature of the sealing mechanism 10 rises, the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18 are formed by the same principle as in the first embodiment. The contact surface 19 comes into contact with the inner surface of the seal groove 3. Due to the sealing member 40, the gas in the seal groove 3 cannot flow into the space 14 through the gap 41, and the gas in the space 14 cannot flow out from the space through the gap 42, so that the gas passes through the sealing mechanism 10. There is no. As described above, the sealing mechanism 10 supplies gas by contacting the contact surfaces 19 formed on the edge 16c of the second portion 16 and the edge 18c of the fourth portion 18 with the inner surface of the seal groove 3. Since it is sealed, the risk of gas leakage can be reduced.

尚、密封部材４０は、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接する際に、当接面１９とシール溝３の内面との間に位置しないように、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに接続することが好ましい。当接面１９とシール溝３の内面との間に密封部材４０が存在するようにして当接面１９がシール溝３の内面に当接すると、シール性能を低下させるおそれがあるが、当接面１９がシール溝３の内面に直接当接するようにすることにより、シール性能の低下を抑制することができる。 The sealing member 40 has a contact surface 19 when the contact surface 19 formed on each of the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18 abuts on the inner surface of the seal groove 3. It is preferable to connect to each of the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18 so as not to be located between the seal groove 3 and the inner surface of the seal groove 3. If the contact surface 19 comes into contact with the inner surface of the seal groove 3 so that the sealing member 40 exists between the contact surface 19 and the inner surface of the seal groove 3, the sealing performance may be deteriorated. By making the surface 19 directly contact the inner surface of the seal groove 3, deterioration of the seal performance can be suppressed.

実施形態４における密封部材４０は、隙間４１及び４２のそれぞれを覆うような部分にのみ設けられているので、第１シール部材１１と第２シール部材１２と変形核部材１３とを内部に含むようなチューブ形状の場合（実施形態３）に比べて、密封部材４０を小さくできるので、密封部材４０のコストを低下することができる。 Since the sealing member 40 in the fourth embodiment is provided only in the portion that covers each of the gaps 41 and 42, the first sealing member 11, the second sealing member 12, and the deformed core member 13 are included therein. Since the sealing member 40 can be made smaller as compared with the case of a simple tube shape (Embodiment 3), the cost of the sealing member 40 can be reduced.

（実施形態５）
次に、実施形態５に係るシール機構について説明する。実施形態５に係るシール機構は、実施形態１に対して、温度上昇時の変形核部材１３の変形形態を変更したものである。尚、実施形態５において、実施形態１の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 (Embodiment 5)
Next, the sealing mechanism according to the fifth embodiment will be described. The sealing mechanism according to the fifth embodiment is a modification of the first embodiment in which the deformed core member 13 is deformed when the temperature rises. In the fifth embodiment, the same reference numerals as those of the constituent requirements of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

図１４に示されるように、本開示の実施形態５に係るシール機構１０では、変形核部材１３は、第１部分１５の内側表面１５ａ及び第３部分１７の内側表面１７ａだけでなく、第２部分１６の内側表面１６ａ及び第４部分１８の内側表面１８ａにも固定されている。変形核部材１３は、適当なメタマテリアルを用いることにより、温度の上昇に伴って、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に収縮するとともに第２部分１６及び第４部分１８間の距離が減少する方向（矢印Ｄの方向）に収縮するように構成されている。その他の構成は実施形態１と同じである。 As shown in FIG. 14, in the sealing mechanism 10 according to the fifth embodiment of the present disclosure, the deformed core member 13 is not only the inner surface 15a of the first portion 15 and the inner surface 17a of the third portion 17, but also the second. It is also fixed to the inner surface 16a of the portion 16 and the inner surface 18a of the fourth portion 18. By using an appropriate metamaterial, the deformed core member 13 has a direction in which the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3 as the temperature rises (direction of arrow A). ), And the distance between the second portion 16 and the fourth portion 18 decreases (in the direction of arrow D). Other configurations are the same as those in the first embodiment.

図１５に示されるように、シール機構１０の温度が上昇し、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に変形核部材１３が収縮すると、実施形態１と同様の原理で、第２部分１６の縁部１６ｃに形成された当接面１９及び第４部分１８の縁部１８ｃに形成された当接面１９がそれぞれシール溝３の内面に当接する。 As shown in FIG. 15, the deformed core member increases in the direction in which the temperature of the seal mechanism 10 rises and the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3 (direction of arrow A). When 13 is contracted, the contact surface 19 formed on the edge portion 16c of the second portion 16 and the contact surface 19 formed on the edge portion 18c of the fourth portion 18 are sealed by the same principle as in the first embodiment. It abuts on the inner surface of the groove 3.

また、シール機構１０の温度が上昇し、シール溝３の横断面において第２部分１６及び第４部分１８間の距離が減少する方向（矢印Ｄの方向）に変形核部材１３が収縮すると、対向面１ａ及び２ａに沿った方向に第１シール部材１１及び第２シール部材１２が互いに対する相対移動を行うことにより、第１部分１５の縁部１５ｃが第４部分１８の内側表面１８ａに当接することで隙間４２（図１４参照）が消滅し、第３部分１７の縁部１７ｃが第２部分１６の内側表面１６ａに当接することで隙間４１（図１４参照）が消滅する。 Further, when the temperature of the seal mechanism 10 rises and the deformed core member 13 contracts in the direction in which the distance between the second portion 16 and the fourth portion 18 decreases (in the direction of arrow D) in the cross section of the seal groove 3, they face each other. As the first seal member 11 and the second seal member 12 move relative to each other in the direction along the surfaces 1a and 2a, the edge portion 15c of the first portion 15 comes into contact with the inner surface 18a of the fourth portion 18. As a result, the gap 42 (see FIG. 14) disappears, and the edge portion 17c of the third portion 17 comes into contact with the inner surface 16a of the second portion 16 to eliminate the gap 41 (see FIG. 14).

隙間４を（矢印Ｂの方向に）流通するガスがシール溝３内に流入すると、隙間４１及び４２が消滅しているので、ガスが空間１４（図１参照）に流入できず、したがって、ガスが変形核部材１３を通り抜けることで空間１４を介してシール機構１０を通り抜けることができない。シール機構１０は、上述したように、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接することによってガスをシールしているので、ガスがリークするおそれを低減することができる。 When the gas flowing through the gap 4 (in the direction of arrow B) flows into the seal groove 3, the gas cannot flow into the space 14 (see FIG. 1) because the gaps 41 and 42 have disappeared, and therefore the gas. Cannot pass through the seal mechanism 10 through the space 14 by passing through the deformed core member 13. As described above, the sealing mechanism 10 supplies gas by contacting the contact surfaces 19 formed on the edge 16c of the second portion 16 and the edge 18c of the fourth portion 18 with the inner surface of the seal groove 3. Since it is sealed, the risk of gas leakage can be reduced.

（実施形態６）
次に、実施形態６に係るシール機構について説明する。実施形態６に係るシール機構は、実施形態１に対して、第１シール部材１１及びシール溝３の内面の形態を変更したものである。尚、実施形態６において、実施形態１の構成要件と同じものは同じ参照符号を付し、その詳細な説明は省略する。 (Embodiment 6)
Next, the sealing mechanism according to the sixth embodiment will be described. The sealing mechanism according to the sixth embodiment is obtained by changing the form of the inner surface of the first sealing member 11 and the sealing groove 3 from the first embodiment. In the sixth embodiment, the same reference numerals as those of the constituent requirements of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

図１６に示されるように、実施形態６では、シール溝３の内面は、シール溝３を構成する溝部３ａに、シール溝３の横断面において第２部分１６が延びる方向と鋭角の角度をなす当接内面部５０を含んでいる。第２部分１６には、縁部１６ｃから外側表面１６ｄまで延びる第２当接面５１を有している。シール溝３の横断面において、第２当接面５１と第２部分１６が延びる方向とがなす角度は、当接内面部５０と第２部分１６が延びる方向とがなす角度と等しい。したがって、第２当接面５１は当接内面部５０に当接可能になっている。実施形態６において必須の構成ではないが、第４部分１８の外側表面１８ｄに、シール溝３の内面に対して凹んだ凹部３０を形成してもよい。その他の構成は実施形態１（変形例３を除く）と同じである。 As shown in FIG. 16, in the sixth embodiment, the inner surface of the seal groove 3 forms an acute angle with the groove portion 3a constituting the seal groove 3 in the direction in which the second portion 16 extends in the cross section of the seal groove 3. The contact inner surface portion 50 is included. The second portion 16 has a second contact surface 51 extending from the edge portion 16c to the outer surface 16d. In the cross section of the seal groove 3, the angle formed by the second contact surface 51 and the direction in which the second portion 16 extends is equal to the angle formed by the contact inner surface portion 50 and the direction in which the second portion 16 extends. Therefore, the second contact surface 51 can come into contact with the contact inner surface portion 50. Although not essential in the sixth embodiment, a recess 30 recessed with respect to the inner surface of the seal groove 3 may be formed on the outer surface 18d of the fourth portion 18. Other configurations are the same as those of the first embodiment (excluding the third modification).

図１７に示されるように、シール機構１０の温度が上昇し、シール溝３の横断面において第１部分１５及び第３部分１７間の距離が減少する方向（矢印Ａの方向）に変形核部材１３が収縮すると、対向面１ａ及び２ａと交差する方向に、すなわち対向面１ａ及び２ａに対して垂直な方向に第１シール部材１１及び第２シール部材１２が互いに対する相対移動を行う。第１シール部材１１は、第２当接面５１が当接内面部５０に当接しながら移動するため、第２当接面５１が当接内面部５０に対して加えるＥの反力によって第１シール部材１１は第２シール部材１２に向かう方向にも移動する。 As shown in FIG. 17, the deformed core member increases in the direction in which the temperature of the seal mechanism 10 rises and the distance between the first portion 15 and the third portion 17 decreases in the cross section of the seal groove 3 (direction of arrow A). When 13 contracts, the first seal member 11 and the second seal member 12 move relative to each other in the direction intersecting the facing surfaces 1a and 2a, that is, in the direction perpendicular to the facing surfaces 1a and 2a. Since the second contact surface 51 moves while the second contact surface 51 is in contact with the contact inner surface portion 50, the first seal member 11 is first driven by the reaction force of E applied by the second contact surface 51 to the contact inner surface portion 50. The seal member 11 also moves in the direction toward the second seal member 12.

第２当接面５１が当接内面部５０に当接しながら第１シール部材１１が移動するにつれて、第１シール部材１１が第２シール部材１２に当接し、すなわち、第１部分１５の縁部１５ｃが第４部分１８の内側表面１８ａに当接するとともに第２部分１６の内側表面１６ａが第３部分１７の縁部１７ｃに当接する。第２当接面５１が当接内面部５０に当接しながら第１シール部材１１がさらに移動すると、第１シール部材１１が第２シール部材１２を対向面１ａ，２ａに沿った方向に押すようになり、第２シール部材１２は、第４部分１８の外側表面１８ｄに形成された当接面１９がシール溝３の内面に当接するまで移動する。また、第２シール部材１２は、実施形態１と同じ原理で、第４部分１８の縁部１８ｃに形成された当接面１９がシール溝３の内面に当接するまで移動する。 As the first seal member 11 moves while the second contact surface 51 is in contact with the contact inner surface portion 50, the first seal member 11 is in contact with the second seal member 12, that is, the edge portion of the first portion 15. The 15c abuts on the inner surface 18a of the fourth portion 18, and the inner surface 16a of the second portion 16 abuts on the edge 17c of the third portion 17. When the first seal member 11 further moves while the second contact surface 51 is in contact with the contact inner surface portion 50, the first seal member 11 pushes the second seal member 12 in the direction along the facing surfaces 1a and 2a. The second seal member 12 moves until the contact surface 19 formed on the outer surface 18d of the fourth portion 18 comes into contact with the inner surface of the seal groove 3. Further, the second seal member 12 moves on the same principle as in the first embodiment until the contact surface 19 formed on the edge portion 18c of the fourth portion 18 comes into contact with the inner surface of the seal groove 3.

この状態では、第２当接面５１が当接内面部５０に当接し、第４部分１８の外側表面１８ｄに形成された当接面１９と第４部分１８の縁部１８ｃに形成された当接面１９とのそれぞれがシール溝３の内面に当接することにより、隙間４を（矢印Ｂの方向に）流通してシール溝３内に流入したガスをシールする。このため、第２部分１６の縁部１６ｃ及び第４部分１８の縁部１８ｃのそれぞれに形成された当接面１９がシール溝３の内面に当接する実施形態１に比べて、温度の上昇時に必要なシール性能を向上することができる。 In this state, the second contact surface 51 is in contact with the contact inner surface portion 50, and the contact surface 19 formed on the outer surface 18d of the fourth portion 18 and the edge portion 18c of the fourth portion 18 are formed. When each of the contact surfaces 19 abuts on the inner surface of the seal groove 3, the gas flowing through the gap 4 (in the direction of arrow B) and flowing into the seal groove 3 is sealed. Therefore, as compared with the first embodiment, in which the contact surfaces 19 formed on the edge portion 16c of the second portion 16 and the edge portion 18c of the fourth portion 18 each abut on the inner surface of the seal groove 3, when the temperature rises. The required sealing performance can be improved.

さらに、第１部分１５の縁部１５ｃが第４部分１８の内側表面１８ａに当接するとともに第２部分１６の内側表面１６ａが第３部分１７の縁部１７ｃに当接することにより、シール溝３内のガスが空間１４内に流入できない。このため、空間１４を介してシール機構１０を通り抜けようとするガスをシールするので、ガスがシール機構１０を通り抜けることを抑制し、ガスがリークするおそれを低減することができる。 Further, the edge portion 15c of the first portion 15 abuts on the inner surface 18a of the fourth portion 18, and the inner surface 16a of the second portion 16 abuts on the edge portion 17c of the third portion 17, so that the inside of the seal groove 3 is formed. Gas cannot flow into the space 14. Therefore, since the gas that is about to pass through the sealing mechanism 10 is sealed through the space 14, it is possible to suppress the gas from passing through the sealing mechanism 10 and reduce the possibility that the gas leaks.

実施形態６において、第４部分１８の外側表面１８ｄに凹部３０を形成している場合には、第４部分１８の外側表面１８ｄに形成された当接面１９のシール溝３の内面への当接圧力が高まるので、温度の上昇時に必要なシール性能を向上することができる。 In the sixth embodiment, when the recess 30 is formed on the outer surface 18d of the fourth portion 18, the contact surface 19 formed on the outer surface 18d of the fourth portion 18 hits the inner surface of the seal groove 3. Since the contact pressure is increased, the sealing performance required when the temperature rises can be improved.

実施形態６では、当接内面部５０を溝部３ａに形成しているが、溝部３ｂに形成してもよい。この場合には、第２当接面５１が当接内面部５０に面するようにシール機構１０の向きを調節して、シール溝３内にシール機構１０を設ければよい。 In the sixth embodiment, the contact inner surface portion 50 is formed in the groove portion 3a, but the contact inner surface portion 50 may be formed in the groove portion 3b. In this case, the direction of the seal mechanism 10 may be adjusted so that the second contact surface 51 faces the contact inner surface portion 50, and the seal mechanism 10 may be provided in the seal groove 3.

１上フランジ（部材）
１ａ（上フランジの）対向面
２下フランジ（部材）
２ａ（下フランジの）対向面
３シール溝
３ａ溝部
３ｂ溝部
４隙間
５クリアランス
１０シール機構
１１第１シール部材
１１ａ（第１シール部材の）内側表面
１１ｃ（第１シール部材の）縁部
１２第２シール部材
１２ａ（第２シール部材の）内側表面
１２ｃ（第２シール部材の）縁部
１３変形核部材
１３ａ突出部
１３ｂ突出部
１４空間
１５第１部分
１５ａ（第１部分の）内側表面
１５ｃ（第１部分の）縁部
１５ｄ（第１部分の）外側表面
１６第２部分
１６ａ（第２部分の）内側表面
１６ｂ（第２部分の）接続部
１６ｃ（第２部分の）縁部
１６ｄ（第２部分の）外側表面
１７第３部分
１７ａ（第３部分の）内側表面
１７ｃ（第３部分の）縁部
１７ｄ（第３部分の）外側表面
１８第４部分
１８ａ（第４部分の）内側表面
１８ｂ（第４部分の）接続部
１８ｃ（第４部分の）縁部
１８ｄ（第４部分の）外側表面
１９当接面
２０メタマテリアル
２１ベース
２２ベース
２３ベース
２４ビーム
３０凹部
４０密封部材
４１隙間
４２隙間
５０当接内面部
５１第２当接面 1 Upper flange (member)
1a (upper flange) facing surface 2 lower flange (member)
2a (lower flange) facing surface 3 Seal groove 3a Groove 3b Groove 4 Gap 5 Clearance 10 Seal mechanism 11 First seal member 11a Inner surface 11c (of first seal member) Edge 12 Second Seal member 12a Inner surface 12c (of the second seal member) Edge 13 of the second seal member 13a Protruding part 13b Protruding part 14 Space 15 First part 15a Inner surface 15c (of the first part) 1st part) Edge 15d (1st part) Outer surface 16 2nd part 16a (2nd part) Inner surface 16b (2nd part) Connection 16c (2nd part) Edge 16d (2nd part) Outer surface 17 (part) Outer surface 17 Third part 17a (third part) Inner surface 17c (third part) Edge 17d (third part) Outer surface 18 Fourth part 18a (fourth part) Inner surface 18b Connection (4th part) 18c (4th part) Edge 18d (4th part) Outer surface 19 Contact surface 20 Metamaterial 21 Base 22 Base 23 Base 24 Beam 30 Recess 40 Sealing member 41 Gap 42 Gap 50 Contact inner surface 51 Second contact surface

Claims

２つの部材の向かい合う対向面間に形成されたシール溝内に挿入されるシール機構であって、
前記シール機構は、
第１シール部材と、
前記第１シール部材と対向するように配置された第２シール部材と、
前記第１シール部材と前記第２シール部材との間で少なくとも部分的に形成された空間内に配置されて前記シール機構の変形の核となる変形核部材であって、線膨張係数の異なる複数の材料のそれぞれから形成された複数の棒状部材及び板状部材を組み合わせて構成されるとともに前記第１シール部材及び前記第２シール部材のそれぞれに固定された変形核部材と
を備え、
前記変形核部材は温度の上昇に伴って、前記シール溝の横断面における少なくとも１方向に収縮し、
前記第１シール部材及び前記第２シール部材のそれぞれは、前記変形核部材の収縮に伴って前記シール溝の内面又は前記対向面に当接する当接面を含むシール機構。 It is a sealing mechanism that is inserted into a sealing groove formed between the facing surfaces of two members.
The sealing mechanism is
With the first seal member
A second seal member arranged so as to face the first seal member,
A plurality of deformed core members arranged in a space formed at least partially between the first seal member and the second seal member and serving as the core of deformation of the seal mechanism and having different linear expansion coefficients. It is composed of a combination of a plurality of rod-shaped members and plate-shaped members formed from each of the materials of the above, and also includes a deformed core member fixed to each of the first seal member and the second seal member.
As the temperature rises, the deformed core member contracts in at least one direction in the cross section of the seal groove.
Each of the first sealing member and the second sealing member is a sealing mechanism including an abutting surface that abuts on the inner surface of the sealing groove or the facing surface as the deformed core member contracts.

前記第１シール部材は、板状の第１部分及び板状の第２部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記第２シール部材は、前記第１部分に対向する板状の第３部分及び前記第２部分に対向する板状の第４部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記変形核部材は、前記第１部分及び前記第３部分のそれぞれに固定され、温度の上昇に伴って、前記第１部分及び前記第３部分間の距離が減少するように収縮し、
前記変形核部材の収縮に伴って、前記第１部分との接続部に対向する前記第２部分の縁部及び前記第３部分との接続部に対向する前記第４部分の縁部が前記シール溝の内面又は前記対向面に当接し、
前記当接面は、前記第２部分の前記縁部及び前記第４部分の前記縁部のそれぞれに形成されている、請求項１に記載のシール機構。 The first seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped first portion and a plate-shaped second portion to each other.
The second seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped third portion facing the first portion and a plate-shaped fourth portion facing the second portion to each other. Have and
The deformed core member is fixed to each of the first portion and the third portion, and contracts so that the distance between the first portion and the third portion decreases as the temperature rises.
With the contraction of the deformed core member, the edge portion of the second portion facing the connection portion with the first portion and the edge portion of the fourth portion facing the connection portion with the third portion are sealed. In contact with the inner surface of the groove or the facing surface,
The sealing mechanism according to claim 1, wherein the contact surface is formed on each of the edge portion of the second portion and the edge portion of the fourth portion.

前記変形核部材はさらに、温度の上昇に伴って、前記第２部分及び前記第４部分間の距離が増加するように膨張し、前記変形核部材の膨張に伴って、前記変形核部材に面する前記第２部分及び前記第４部分それぞれの内側表面とは反対側の外側表面のそれぞれが前記シール溝の内面又は前記対向面に当接し、
前記当接面はさらに、前記第２部分の前記外側表面及び前記第４部分の前記外側表面のそれぞれに形成されている、請求項２に記載のシール機構。 The deformed core member further expands so that the distance between the second portion and the fourth portion increases as the temperature rises, and the deformed core member faces the deformed core member as the temperature rises. Each of the outer surface opposite to the inner surface of each of the second portion and the fourth portion abuts on the inner surface or the facing surface of the seal groove.
The sealing mechanism according to claim 2, wherein the contact surface is further formed on each of the outer surface of the second portion and the outer surface of the fourth portion.

前記第２部分の前記外側表面及び前記第４部分の前記外側表面の少なくとも一方には、前記シール溝の内面又は前記対向面に対して凹んだ凹部が形成されている、請求項３に記載のシール機構。 The third aspect of the present invention, wherein at least one of the outer surface of the second portion and the outer surface of the fourth portion is formed with a recess recessed with respect to the inner surface or the facing surface of the seal groove. Seal mechanism.

前記空間を密封する密封部材をさらに備える、請求項１〜４のいずれか一項に記載のシール機構。 The sealing mechanism according to any one of claims 1 to 4, further comprising a sealing member for sealing the space.

前記密封部材は、前記第１シール部材と前記第２シール部材と前記変形核部材とを内部に含むチューブ形状を有する、請求項５に記載のシール機構。 The sealing mechanism according to claim 5, wherein the sealing member has a tube shape including the first sealing member, the second sealing member, and the deformed core member inside.

前記密封部材は、前記第１シール部材及び前記第２シール部材と共に前記空間を密封する、請求項５に記載のシール機構。 The sealing mechanism according to claim 5, wherein the sealing member seals the space together with the first sealing member and the second sealing member.

前記変形核部材はさらに、前記第２部分及び前記第４部分のそれぞれに固定され、
前記変形核部材はさらに、温度の上昇に伴って前記第２部分及び前記第４部分間の距離が減少するように収縮して、前記第１部分が前記第４部分に当接するとともに前記第３部分が前記第２部分に当接する、請求項２に記載のシール機構。 The deformed core member is further fixed to each of the second portion and the fourth portion.
The deformed core member further contracts so that the distance between the second portion and the fourth portion decreases as the temperature rises, so that the first portion abuts on the fourth portion and the third portion. The sealing mechanism according to claim 2, wherein the portion abuts on the second portion.

前記第１シール部材は、板状の第１部分及び板状の第２部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記第２シール部材は、前記第１部分に対向する板状の第３部分及び前記第２部分に対向する板状の第４部分が互いに接続されて構成された略Ｌ字状の断面形状を有し、
前記変形核部材は、前記第１部分及び前記第３部分のそれぞれに固定され、温度の上昇に伴って、前記第１部分及び前記第３部分間の距離が減少するように収縮し、
前記シール溝の内面は、前記第２部分と鋭角の角度をなす当接内面部を含み、
前記第２部分は、前記変形核部材の収縮に伴って前記当接内面部に当接する第２当接面を含み、
前記第２当接面が前記当接内面部に当接することによって前記第１シール部材が前記第２シール部材を押して、前記第１部分が前記第４部分に当接するとともに前記第３部分が前記第２部分に当接し、前記第４部分の表面のうち前記変形核部材に面する内側表面とは反対側の外側表面が前記シール溝の内面に当接し、
前記当接面は、前記外側表面と、前記第３部分との接続部に対向する前記第４部分の縁部とのそれぞれに形成されている、請求項１に記載のシール機構。 The first seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped first portion and a plate-shaped second portion to each other.
The second seal member has a substantially L-shaped cross-sectional shape formed by connecting a plate-shaped third portion facing the first portion and a plate-shaped fourth portion facing the second portion to each other. Have and
The deformed core member is fixed to each of the first portion and the third portion, and contracts so that the distance between the first portion and the third portion decreases as the temperature rises.
The inner surface of the seal groove includes a contact inner surface portion at an acute angle with the second portion.
The second portion includes a second contact surface that comes into contact with the contact inner surface portion as the deformed core member contracts.
When the second contact surface comes into contact with the contact inner surface portion, the first seal member pushes the second seal member, the first portion abuts on the fourth portion, and the third portion abuts. The outer surface of the fourth portion, which is opposite to the inner surface facing the deformed nuclear member, abuts on the inner surface of the seal groove.
The sealing mechanism according to claim 1, wherein the contact surface is formed on each of the outer surface and the edge portion of the fourth portion facing the connection portion with the third portion.

前記第４部分の前記外側表面には、前記シール溝の内面に対して凹んだ凹部が形成されている、請求項９に記載のシール機構。 The sealing mechanism according to claim 9, wherein a recess recessed with respect to the inner surface of the sealing groove is formed on the outer surface of the fourth portion.