JP4587859B2 - Seal chamber - Google Patents

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JP4587859B2
JP4587859B2 JP2005096243A JP2005096243A JP4587859B2 JP 4587859 B2 JP4587859 B2 JP 4587859B2 JP 2005096243 A JP2005096243 A JP 2005096243A JP 2005096243 A JP2005096243 A JP 2005096243A JP 4587859 B2 JP4587859 B2 JP 4587859B2
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seal chamber
furnace
housing
fiber
inclination angle
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正直 山口
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Teijin Ltd
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Description

本発明は、炭素繊維を製造する熱処理炉の原料繊維入口部及び／又は炭素繊維出口部に形成されてなるシール室に関する。   The present invention relates to a seal chamber formed at a raw material fiber inlet portion and / or a carbon fiber outlet portion of a heat treatment furnace for producing carbon fibers.

炭素繊維の製造工程においては、アクリル繊維等の前駆体繊維を耐炎化し、得られた耐炎化繊維を原料繊維とし、これを炭素化して炭素繊維とする。原料繊維を炭素化する方法として、高温、不活性雰囲気の熱処理炉内に原料繊維を通過させる方法がある(例えば、特許文献１参照)。   In the carbon fiber manufacturing process, precursor fibers such as acrylic fibers are made flame resistant, and the obtained flame resistant fibers are used as raw material fibers, which are carbonized to form carbon fibers. As a method for carbonizing raw material fibers, there is a method of passing raw material fibers through a heat treatment furnace in a high temperature and inert atmosphere (see, for example, Patent Document 1).

熱処理炉内を不活性雰囲気に保つには、熱処理炉の原料繊維入口部及び／又は炭素繊維出口部にシール室を設けて大気が熱処理炉内に入らないように熱処理炉の気密性を保つことが従来から行われている。   In order to keep the inside of the heat treatment furnace in an inert atmosphere, a seal chamber is provided at the raw fiber inlet portion and / or the carbon fiber outlet portion of the heat treatment furnace to maintain the airtightness of the heat treatment furnace so that the atmosphere does not enter the heat treatment furnace. Has traditionally been done.

図３は従来のシール室を有する熱処理炉の一例を示す概略図であり、(Ａ)は、その側面断面図であり、(Ｂ)は、その正面図である。   FIG. 3 is a schematic view showing an example of a heat treatment furnace having a conventional seal chamber, (A) is a side sectional view thereof, and (B) is a front view thereof.

図３中、５２は熱処理炉である。原料繊維５４は、３００〜９００℃に昇温された熱処理室５６内を水平に且つ熱処理室５６の側壁５８に平行にパス(本図では６列のパス)を形成して走行し、熱処理室５６内で熱処理(炭素化処理)されて炭素繊維にされる。   In FIG. 3, 52 is a heat treatment furnace. The raw fiber 54 travels in the heat treatment chamber 56 heated to 300 to 900 ° C. while forming a path (in this figure, six rows of paths) horizontally and parallel to the side wall 58 of the heat treatment chamber 56. In 56, heat treatment (carbonization treatment) is performed to form carbon fibers.

熱処理炉５２において、熱処理室５６の上流側の原料繊維入口部にはシール室６０が形成され、同様に熱処理室５６の下流側の炭素繊維出口部にもシール室６２が形成されている。   In the heat treatment furnace 52, a seal chamber 60 is formed at the raw material fiber inlet portion upstream of the heat treatment chamber 56, and similarly, a seal chamber 62 is formed at the carbon fiber outlet portion downstream of the heat treatment chamber 56.

図３(Ｃ)は、シール室６０の側面断面図であり、図３(Ｄ)は、シール室６０の正面断面図である(シール室６２もシール室６０と同様の構造を有するので、以下、代表してシール室６０について説明する)。   3C is a side cross-sectional view of the seal chamber 60, and FIG. 3D is a front cross-sectional view of the seal chamber 60 (the seal chamber 62 has the same structure as the seal chamber 60. The seal chamber 60 will be described as a representative).

シール室６０は、
(ａ) 原料繊維５４がシール室６０に出入りすると共に同繊維５４が内部を走行する走行路６４を有するハウジングと、
(ｂ) 前記ハウジング内の走行路６４に沿って所定間隔互いに離れてハウジング上壁６６から垂設した複数の仕切板６８であって各仕切板６８の板面方向が走行路６４と直交している仕切板６８と、
(ｃ) 前記ハウジング内の走行路６４に沿って所定間隔互いに離れてハウジング下壁７０から突出した複数の仕切板７２であって各仕切板７２の板面方向が走行路６４と直交している仕切板７２と、
を有する。 The seal chamber 60 is
(a) a housing having a running path 64 through which the raw fiber 54 enters and exits the seal chamber 60 and the fiber 54 travels inside;
(b) A plurality of partition plates 68 suspended from the housing upper wall 66 and spaced apart from each other by a predetermined distance along the travel path 64 in the housing, and the plate surface direction of each partition plate 68 is orthogonal to the travel path 64. A partition plate 68,
(c) A plurality of partition plates 72 protruding from the lower wall 70 of the housing apart from each other by a predetermined distance along the travel path 64 in the housing, and the plate surface direction of each partition plate 72 is orthogonal to the travel path 64. A partition plate 72;
Have

原料繊維５４は、シール室６０における走行路６４からシール室６０〜熱処理室５６間の繊維走行路７４を経て、熱処理室５６に搬入される。   The raw material fibers 54 are carried into the heat treatment chamber 56 from a running path 64 in the seal chamber 60 through a fiber running path 74 between the seal chamber 60 and the heat treatment chamber 56.

このシール室６０の構造は、通称ラビリンスシール(例えば、上記特許文献１参照)と呼ばれ、熱処理炉５２の気密性を保つのに有効である。   The structure of the seal chamber 60 is commonly called a labyrinth seal (see, for example, Patent Document 1 above) and is effective in maintaining the airtightness of the heat treatment furnace 52.

ハウジング上壁６６から垂設した各仕切板６８間に形成される頂部空間部７６の一には、不活性ガスとして用いられる窒素の供給管７８が外部から挿入されている。この窒素供給管７８には複数の窒素供給孔８０が穿設されている。この窒素供給孔８０を通って供給される窒素により、上記ラビリンスシール構造による外気浸入防止効果に加え、熱処理炉５２内への外気浸入防止効果が更に高められる。   A nitrogen supply pipe 78 used as an inert gas is inserted from the outside into one of the top space portions 76 formed between the partition plates 68 suspended from the housing upper wall 66. The nitrogen supply pipe 78 has a plurality of nitrogen supply holes 80 formed therein. The nitrogen supplied through the nitrogen supply hole 80 further enhances the effect of preventing the entry of outside air into the heat treatment furnace 52 in addition to the effect of preventing the entry of outside air by the labyrinth seal structure.

ところで、熱処理炉５２の運転中には、ハウジング下壁７０から突出した各仕切板７２間の底部空間部８２に繊維由来のケバや粉末等の異物８４が堆積する。そのため、熱処理炉５２の休転中には、この異物８４を取り除く清掃をする必要がある。しかし、このシール室６０における清掃作業は作業効率が悪く、ひいては炭素繊維の生産性が低下する。
特開平１１−２９３５２６号公報 （特許請求の範囲、段落番号［００２０］） By the way, during the operation of the heat treatment furnace 52, foreign matters 84 such as fibers and powder are deposited in the bottom space 82 between the partition plates 72 protruding from the lower wall 70 of the housing. Therefore, it is necessary to clean the foreign matter 84 while the heat treatment furnace 52 is resting. However, the cleaning operation in the seal chamber 60 is poor in work efficiency, and as a result, the productivity of carbon fibers is reduced.
JP 11-293526 A (Claims, paragraph number [0020])

本発明者は、上記問題を解決するために種々検討しているうちに、ハウジングの下壁に複数の仕切壁を形成し、この仕切壁の走行路方向に沿う断面が上方に突出したジグザグの連続三角波をなす仕切壁とすることにより、シール室の清掃が容易になり、作業効率等の面から炭素繊維の生産性を向上することが出来ることを知得し、本発明を完成するに到った。   While the present inventor has made various studies to solve the above problem, a plurality of partition walls are formed on the lower wall of the housing, and the zigzag of the partition wall along the traveling path direction protrudes upward. By using a partition wall having a continuous triangular wave, it becomes easy to clean the seal chamber, and it is known that the productivity of carbon fibers can be improved from the viewpoint of work efficiency, etc., and the present invention is completed. It was.

従って、本発明の目的とするところは、上述した問題点を解決した熱処理炉のシール室を提供することにある。   Accordingly, an object of the present invention is to provide a seal chamber of a heat treatment furnace that solves the above-described problems.

上記目的を達成する本発明は、以下に記載するものである。   The present invention for achieving the above object is described below.

〔１〕 炉内を水平方向に走行する原料繊維を焼成して炭素繊維にする熱処理炉の原料繊維入口部及び／又は炭素繊維出口部に形成されてなるシール室であって、
前記シール室は、
(Ａ) 繊維がシール室に出入りすると共に同繊維が内部を走行する走行路を有するハウジングと、
(Ｂ) 前記ハウジング内の走行路に沿って所定間隔互いに離れてハウジング上壁から垂設した複数の仕切板であって各仕切板の板面方向が走行路と直交している仕切板と、
(Ｃ) 前記ハウジングの下壁に形成した複数の仕切壁であって、前記仕切壁の走行路方向に沿う断面が上方に突出したジグザグの連続三角波をなす仕切壁と
を有するシール室。 [1] A seal chamber formed in a raw material fiber inlet portion and / or a carbon fiber outlet portion of a heat treatment furnace that calcinates raw material fibers that run in the furnace in the horizontal direction to form carbon fibers,
The seal chamber is
(A) a housing having a traveling path through which the fiber enters and exits the seal chamber and inside the fiber;
(B) a plurality of partition plates that are suspended from the upper wall of the housing and spaced apart from each other by a predetermined distance along the travel path in the housing, and a partition plate in which the plate surface direction of each partition plate is orthogonal to the travel path;
(C) A seal chamber having a plurality of partition walls formed on a lower wall of the housing, and a partition wall forming a zigzag continuous triangular wave whose cross section along the traveling path direction of the partition wall protrudes upward.

〔２〕 各三角波の二斜辺のうち片方の斜辺が、走行路の面に対し４５゜以下の傾斜角を有する〔１〕に記載のシール室。   [2] The seal chamber according to [1], wherein one of the two oblique sides of each triangular wave has an inclination angle of 45 ° or less with respect to the surface of the traveling path.

〔３〕 走行路の面に対し４５゜以下の傾斜角を有する斜辺が、炉内に近い斜辺である〔２〕に記載のシール室。   [3] The seal chamber according to [2], wherein the hypotenuse having an inclination angle of 45 ° or less with respect to the surface of the traveling path is the hypotenuse close to the inside of the furnace.

〔４〕 シール室のほぼ中央の位置より炉外側では、各三角波の二斜辺のうち炉内に近い斜辺が走行路の面に対し４５゜以下の傾斜角をなし、前記位置より炉内側では、各三角波の二斜辺のうち炉内に遠い斜辺が繊維走行面に対し４５゜以下の傾斜角をなし、シール室底部の炉内側端部に異物仮置ピットが形成されてなる〔２〕に記載のシール室。   [4] On the outside of the furnace from the substantially central position of the seal chamber, the hypotenuse close to the furnace among the two hypotenuses of each triangular wave has an inclination angle of 45 ° or less with respect to the plane of the traveling path. As described in [2], of the two oblique sides of each triangular wave, the oblique side far from the furnace forms an inclination angle of 45 ° or less with respect to the fiber running surface, and foreign matter temporary placement pits are formed at the inner end of the furnace at the bottom of the seal chamber. Seal chamber.

本発明のシール室は、前記のように構成したので、シール室の清掃が容易になり、作業効率等の面から炭素繊維の生産性を向上することが出来る。   Since the seal chamber of the present invention is configured as described above, cleaning of the seal chamber becomes easy, and the productivity of carbon fibers can be improved from the viewpoint of work efficiency and the like.

以下、図面を参照して本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the drawings.

本発明のシール室を有する熱処理炉は、シール室以外は図３に示した従来例の熱処理炉と同様の構成である。   The heat treatment furnace having the seal chamber of the present invention has the same configuration as the heat treatment furnace of the conventional example shown in FIG. 3 except for the seal chamber.

図１は本発明のシール室の一例を示す概略図であり、(Ａ)は、その側面断面図であり、(Ｂ)は、図１(Ａ)中の点線部分ａの拡大図である。   FIG. 1 is a schematic view showing an example of a seal chamber of the present invention, (A) is a side sectional view thereof, and (B) is an enlarged view of a dotted line portion a in FIG. 1 (A).

図１(Ａ)中、２は上流側の原料繊維入口部に形成されたシール室である[下流側の炭素繊維出口部にもシール室(不図示)が形成されているが、上流側のシール室２と同様の構造を有するので、以下、代表してシール室２について説明する]。   In FIG. 1 (A), reference numeral 2 denotes a seal chamber formed at the upstream raw material fiber inlet [a seal chamber (not shown) is also formed at the downstream carbon fiber outlet, Since it has the same structure as the seal chamber 2, the seal chamber 2 will be described below as a representative.

原料繊維４は、シール室２に出入りすると共に同繊維４が内部を走行する走行路６からシール室〜熱処理室間の繊維走行路８を経て、熱処理室に搬入される。   The raw material fiber 4 enters and exits the seal chamber 2 and is carried into the heat treatment chamber from a running path 6 in which the fiber 4 travels through a fiber running path 8 between the seal chamber and the heat treatment chamber.

シール室２は、
(Ａ) 前記走行路６を有するハウジングと、
(Ｂ) 前記ハウジング内の走行路６に沿って所定間隔互いに離れてハウジング上壁１０から垂設した複数の仕切板１２であって各仕切板１２の板面方向が走行路６と直交している仕切板１２と、
(Ｃ) 前記ハウジングの下壁１４に形成した複数の仕切壁１６であって、前記仕切壁１６の走行路６方向に沿う断面が上方に突出したジグザグの連続三角波をなす仕切壁１６と
を有する。 Seal chamber 2
(A) a housing having the travel path 6;
(B) A plurality of partition plates 12 that are suspended from the upper wall 10 of the housing and spaced apart from each other by a predetermined distance along the travel path 6 in the housing, and the plate surface direction of each partition plate 12 is orthogonal to the travel path 6. A partition plate 12;
(C) A plurality of partition walls 16 formed on the lower wall 14 of the housing, the partition wall 16 having a zigzag continuous triangular wave projecting upward in a cross section along the traveling path 6 direction. .

なお、図３(Ｃ)及び(Ｄ)に示した従来例のシール室と同様に、ハウジング上壁１０から垂設した各仕切板１２間に形成される頂部空間部１８の一には、不活性ガスとして用いられる窒素の供給管２０が外部から挿入されている。この窒素供給管２０には複数の窒素供給孔２２が穿設されている。   Similar to the seal chamber of the conventional example shown in FIGS. 3C and 3D, one of the top space portions 18 formed between the partition plates 12 suspended from the housing upper wall 10 is not suitable. A nitrogen supply pipe 20 used as an active gas is inserted from the outside. A plurality of nitrogen supply holes 22 are formed in the nitrogen supply pipe 20.

本例においては、上記仕切壁１６の各三角波の二斜辺のうち片方の斜辺が、走行路の面に対し４５゜以下の傾斜角[図１(Ｂ)中の傾斜角α]を有する。この走行路の面に対し４５゜以下の傾斜角を有する斜辺は、炉内に近い斜辺である。なお、炉内に遠い斜辺の走行路の面に対する傾斜角は、傾斜角βとする[図１(Ｂ)中の例では傾斜角βはほぼ直角(９０゜)である]。   In this example, one of the two oblique sides of the triangular wave of the partition wall 16 has an inclination angle [inclination angle α in FIG. 1B] of 45 ° or less with respect to the plane of the traveling path. The hypotenuse having an inclination angle of 45 ° or less with respect to the plane of the traveling path is the hypotenuse close to the inside of the furnace. In addition, the inclination angle with respect to the plane of the oblique side far from the furnace is the inclination angle β [in the example in FIG. 1B, the inclination angle β is substantially a right angle (90 °)].

本例のシール室２の構成とすることにより、シール室２の清掃が容易になり、作業効率等の面から炭素繊維の生産性を向上することが出来る。   By adopting the configuration of the seal chamber 2 of this example, cleaning of the seal chamber 2 is facilitated, and the productivity of carbon fibers can be improved from the viewpoint of work efficiency and the like.

具体的には、ハウジング下壁１４に形成した複数の仕切壁１６間に形成される底部空間部２４に堆積している繊維由来のケバや粉末等の異物２６は、熱処理炉休転中に例えば熊手型の清掃具を原料繊維入口のスリットから差込んで、同スリットからシール室２外へ掻出すことにより、容易にシール室２から取り除くことが出来る。   Specifically, foreign matters 26 such as fibers and powders accumulated in the bottom space 24 formed between the plurality of partition walls 16 formed on the lower wall 14 of the housing are, for example, suspended during the heat treatment furnace. A rake-type cleaning tool can be easily removed from the seal chamber 2 by inserting it from the slit at the raw fiber entrance and scraping it out of the seal chamber 2 from the slit.

図２は本発明のシール室の他の例を示す概略側面断面図である。   FIG. 2 is a schematic side sectional view showing another example of the seal chamber of the present invention.

図２中、３２は上流側の原料繊維入口部に形成されたシール室である[下流側の炭素繊維出口部にもシール室(不図示)が形成されているが、上流側のシール室３２と同様の構造を有するので、以下、代表してシール室３２について説明する]。   In FIG. 2, 32 is a seal chamber formed at the upstream raw fiber entrance portion [a seal chamber (not shown) is also formed at the downstream carbon fiber exit portion, but the upstream seal chamber 32 is formed. The seal chamber 32 will be described below as a representative example.

また、図２の例について、シール室３２ハウジングの下壁３４の上方に突出して形成した仕切壁３６及びシール室底部の炉内側端部に形成した異物仮置ピット３８以外の構成は、図１の例と同様であるので、同一箇所に同一参照符号を付してその説明を省略する。   Further, in the example of FIG. 2, the configuration other than the partition wall 36 that protrudes above the lower wall 34 of the seal chamber 32 housing and the foreign substance temporary placement pit 38 that is formed at the furnace inner end of the bottom of the seal chamber is as shown in FIG. The same reference numerals are assigned to the same portions, and the description thereof is omitted.

シール室３２ハウジングの下壁３４には、図１の例と同様に、複数の仕切壁３６が形成され、前記仕切壁３６の走行路６方向に沿う断面は上方に突出したジグザグの連続三角波をなしている。また、上記仕切壁３６の各三角波の二斜辺のうち片方の斜辺は、走行路の面に対し４５゜以下の傾斜角を有する。   As in the example of FIG. 1, a plurality of partition walls 36 are formed on the lower wall 34 of the seal chamber 32 housing, and the cross section along the direction of the running path 6 of the partition wall 36 is a zigzag continuous triangular wave projecting upward. There is no. Further, one of the two oblique sides of each triangular wave of the partition wall 36 has an inclination angle of 45 ° or less with respect to the surface of the traveling path.

更に、本例においては、シール室３２のほぼ中央の位置より炉外側では、各三角波の二斜辺のうち炉内に近い斜辺が走行路の面に対し４５゜以下の傾斜角αをなし、前記位置より炉内側では、各三角波の二斜辺のうち炉内に遠い斜辺が繊維走行面に対し４５゜以下の傾斜角βをなし、シール室３２底部の炉内側端部には異物仮置ピット３８が形成されている。   Further, in this example, on the outer side of the furnace from the position approximately at the center of the seal chamber 32, the hypotenuse close to the furnace among the two hypotenuses of each triangular wave forms an inclination angle α of 45 ° or less with respect to the surface of the traveling path. On the inside of the furnace from the position, of the two oblique sides of each triangular wave, the oblique side far from the furnace forms an inclination angle β of 45 ° or less with respect to the fiber running surface. Is formed.

本例のシール室３２の構成とすることにより、シール室３２の清掃が容易になり、作業効率等の面から炭素繊維の生産性を向上することが出来る。   By adopting the configuration of the seal chamber 32 of this example, cleaning of the seal chamber 32 is facilitated, and the productivity of carbon fibers can be improved in terms of work efficiency and the like.

具体的には、シール室３２ハウジングの下壁３４の上方に突出して形成したの各底部仕切壁３６間の底部空間部４０に堆積している繊維由来のケバや粉末等の異物４２は、熱処理炉休転中に例えば熊手型の清掃具を原料繊維入口のスリットから差込んで、シール室３２のほぼ中央の位置より炉外側では、前記スリットからシール室３２外へ掻出し、前記位置より炉内側では、シール室底部の炉内側端部に異物仮置ピット３８へ掻出し、異物が溜った時にピット３８の底部に形成した排出蓋４４から外部に排出させることにより、容易にシール室３２から取り除くことが出来る。   Specifically, foreign matters 42 such as fibers and powders deposited in the bottom space 40 between the bottom partition walls 36 that protrude above the lower wall 34 of the housing 32 of the seal chamber 32 are heat treated. During the operation of the furnace, for example, a rake-type cleaning tool is inserted from the slit of the raw material fiber inlet, and is scraped out of the seal chamber 32 from the slit outside the furnace from the position substantially at the center of the seal chamber 32. On the inside, it is scraped out to the temporary foreign substance pit 38 at the furnace inner end of the bottom of the seal chamber, and when the foreign matter accumulates, it is discharged from the discharge lid 44 formed at the bottom of the pit 38 to the outside so that it can be easily removed from the seal chamber 32. It can be removed.

なお、図１の例においては仕切壁の各三角波二斜辺のうち走行路の面に対し４５゜を超える傾斜角βを有する斜辺は、その傾斜角βをほぼ直角としたが、これに限られず、４５゜を超える任意の傾斜角βとすることができる。また、図１の例においては仕切壁の各三角波二斜辺のうち走行路の面に対し４５゜以下の傾斜角αを有する斜辺は、その傾斜角αが２０゜程度である。この２０゜も含め、傾斜角αは１０〜４５゜とすることが好ましい。   In the example of FIG. 1, of the two oblique sides of the triangular wave of the partition wall, the oblique side having an inclination angle β exceeding 45 ° with respect to the plane of the traveling road has the inclination angle β of substantially right angle, but is not limited thereto. , An arbitrary inclination angle β exceeding 45 ° can be set. Further, in the example of FIG. 1, the oblique side having an inclination angle α of 45 ° or less with respect to the surface of the traveling road among the two oblique sides of the triangular wave of the partition wall has an inclination angle α of about 20 °. Including this 20 °, the inclination angle α is preferably 10 to 45 °.

図２の場合、三角波はほぼ対称になっているが、考え方は図１の場合と同じである。その他本発明の要旨を変更しない限り、適宜変形して差支えない。   In the case of FIG. 2, the triangular wave is substantially symmetric, but the idea is the same as in FIG. Other modifications may be made as appropriate unless the gist of the present invention is changed.

本発明のシール室の一例を示す概略図であり、(Ａ)は、その側面断面図であり、(Ｂ)は、図１(Ａ)中の点線部分ａの拡大図である。It is the schematic which shows an example of the seal chamber of this invention, (A) is the side surface sectional drawing, (B) is an enlarged view of the dotted-line part a in FIG. 1 (A). 本発明のシール室の他の例を示す概略側面断面図である。It is a schematic sectional side view which shows the other example of the seal chamber of this invention. 従来のシール室を有する熱処理炉の一例を示す概略図であり、(Ａ)は、その側面断面図であり、(Ｂ)は、その正面図であり、(Ｃ)は、前記シール室の側面断面図であり、(Ｄ)は、前記シール室の正面断面図である。It is the schematic which shows an example of the heat processing furnace which has the conventional seal chamber, (A) is the side surface sectional drawing, (B) is the front view, (C) is the side surface of the said seal chamber It is sectional drawing, (D) is front sectional drawing of the said seal | sticker chamber.

符号の説明Explanation of symbols

２、３２、６０ 上流側の原料繊維入口部に形成されたシール室
４、５４ 原料繊維
６、６４ 原料繊維がシール室に出入りすると共に内部を走行する走行路
８、７４ シール室〜熱処理室間の繊維走行路
１０、６６ ハウジング上壁
１２、６８ ハウジング上壁から垂設した仕切板
１４、３４、７０ ハウジング下壁
１６、３６ ハウジング下壁に形成した仕切壁
１８、７６ シール室頂部空間部
２０、７８ 窒素供給管
２２、８０ 窒素供給孔
２４、４０、８２ シール室底部空間部
２６、４２、８４ 異物
３８ 異物仮置ピット
４４ 蓋
５２ 熱処理炉
５６ 熱処理室
５８ 熱処理室側壁
６２ 下流側の炭素繊維出口部に形成されたシール室
７２ ハウジング下壁から突出した仕切板 2, 32, 60 Seal chamber formed at raw material fiber inlet of upstream side 4, 54 Raw material fiber 6, 64 Traveling path where raw material fiber enters and exits seal chamber and travels inside 8, 74 Between seal chamber and heat treatment chamber Fiber running path 10, 66 Housing upper wall 12, 68 Partition plate suspended from housing upper wall 14, 34, 70 Housing lower wall 16, 36 Partition wall formed on housing lower wall 18, 76 Seal chamber top space 20 , 78 Nitrogen supply pipe 22, 80 Nitrogen supply hole 24, 40, 82 Seal chamber bottom space 26, 42, 84 Foreign matter 38 Foreign matter temporary placement pit 44 Lid 52 Heat treatment furnace 56 Heat treatment chamber 58 Heat treatment chamber side wall 62 Downstream carbon fiber Seal chamber formed at the outlet 72 A partition plate protruding from the lower wall of the housing

Claims (4)

炉内を水平方向に走行する原料繊維を焼成して炭素繊維にする熱処理炉の原料繊維入口部及び／又は炭素繊維出口部に形成されてなるシール室であって、
前記シール室は、
(Ａ) 繊維がシール室に出入りすると共に同繊維が内部を走行する走行路を有するハウジングと、
(Ｂ) 前記ハウジング内の走行路に沿って所定間隔互いに離れてハウジング上壁から垂設した複数の仕切板であって各仕切板の板面方向が走行路と直交している仕切板と、
(Ｃ) 前記ハウジングの下壁に形成した複数の仕切壁であって、前記仕切壁の走行路方向に沿う断面が上方に突出したジグザグの連続三角波をなす仕切壁と
を有するシール室。 A seal chamber formed at a raw material fiber inlet part and / or a carbon fiber outlet part of a heat treatment furnace that calcinates raw material fibers that run in the furnace in the horizontal direction to form carbon fibers,
The seal chamber is
(A) a housing having a traveling path through which the fiber enters and exits the seal chamber and inside the fiber;
(B) a plurality of partition plates that are suspended from the upper wall of the housing and spaced apart from each other by a predetermined distance along the travel path in the housing, and a partition plate in which the plate surface direction of each partition plate is orthogonal to the travel path;
(C) A seal chamber having a plurality of partition walls formed on a lower wall of the housing, and a partition wall forming a zigzag continuous triangular wave whose cross section along the traveling path direction of the partition wall protrudes upward. 各三角波の二斜辺のうち片方の斜辺が、走行路の面に対し４５゜以下の傾斜角を有する請求項１に記載のシール室。 The seal chamber according to claim 1, wherein one of the two oblique sides of each triangular wave has an inclination angle of 45 ° or less with respect to the surface of the traveling path. 走行路の面に対し４５゜以下の傾斜角を有する斜辺が、炉内に近い斜辺である請求項２に記載のシール室。 The seal chamber according to claim 2, wherein the hypotenuse having an inclination angle of 45 ° or less with respect to the surface of the traveling path is the hypotenuse close to the inside of the furnace. シール室のほぼ中央の位置より炉外側では、各三角波の二斜辺のうち炉内に近い斜辺が走行路の面に対し４５゜以下の傾斜角をなし、前記位置より炉内側では、各三角波の二斜辺のうち炉内に遠い斜辺が繊維走行面に対し４５゜以下の傾斜角をなし、シール室底部の炉内側端部に異物仮置ピットが形成されてなる請求項２に記載のシール室。 On the outside of the furnace from the position approximately at the center of the seal chamber, the hypotenuse near the inside of the furnace among the two hypotenuses of each triangular wave forms an inclination angle of 45 ° or less with respect to the plane of the traveling path. The seal chamber according to claim 2, wherein a hypotenuse which is far from the furnace among the two oblique sides forms an inclination angle of 45 ° or less with respect to the fiber running surface, and a foreign substance temporary placement pit is formed at the inner end of the furnace at the bottom of the seal chamber. .
JP2005096243A 2005-03-29 2005-03-29 Seal chamber Expired - Fee Related JP4587859B2 (en)

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KR101593869B1 (en) * 2012-06-27 2016-02-12 미쯔비시 레이온 가부시끼가이샤 Carbonization furnace for manufacturing carbon fiber bundles and method for manufacturing carbon fiber bundles
KR101374012B1 (en) 2013-01-25 2014-03-12 주식회사 효성 Sealing device of furnace for manufacturing carbon fiber
KR101711810B1 (en) * 2015-05-29 2017-03-06 주식회사 뉴파워 프라즈마 Carbon fiber fabrication equipment

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JPS4719527U (en) * 1971-01-27 1972-11-04
JPS59137562A (en) * 1983-01-19 1984-08-07 旭化成株式会社 Continuous steam heat-treatng apparatus
JPH0657572A (en) * 1991-08-01 1994-03-01 Mitsubishi Rayon Co Ltd Apparatus for pressurized steam treatment of yarn and treating method
JPH1183334A (en) * 1997-09-02 1999-03-26 Fujitsu Ten Ltd Labyrinth structure
JP2004019053A (en) * 2002-06-18 2004-01-22 Toray Ind Inc Horizontal type carbonization furnace for producing carbon fiber and method for producing carbon fiber by using the same
JP2004132691A (en) * 2002-09-18 2004-04-30 Toray Ind Inc Heat treatment furnace

Patent Citations (6)

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Publication number Priority date Publication date Assignee Title
JPS4719527U (en) * 1971-01-27 1972-11-04
JPS59137562A (en) * 1983-01-19 1984-08-07 旭化成株式会社 Continuous steam heat-treatng apparatus
JPH0657572A (en) * 1991-08-01 1994-03-01 Mitsubishi Rayon Co Ltd Apparatus for pressurized steam treatment of yarn and treating method
JPH1183334A (en) * 1997-09-02 1999-03-26 Fujitsu Ten Ltd Labyrinth structure
JP2004019053A (en) * 2002-06-18 2004-01-22 Toray Ind Inc Horizontal type carbonization furnace for producing carbon fiber and method for producing carbon fiber by using the same
JP2004132691A (en) * 2002-09-18 2004-04-30 Toray Ind Inc Heat treatment furnace

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