JPH08159360A - Pulsation preventing structure for inner pipe of sheathed pipe - Google Patents

Pulsation preventing structure for inner pipe of sheathed pipe

Info

Publication number
JPH08159360A
JPH08159360A JP6300632A JP30063294A JPH08159360A JP H08159360 A JPH08159360 A JP H08159360A JP 6300632 A JP6300632 A JP 6300632A JP 30063294 A JP30063294 A JP 30063294A JP H08159360 A JPH08159360 A JP H08159360A
Authority
JP
Japan
Prior art keywords
pipe
inner pipe
sheath
tube
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6300632A
Other languages
Japanese (ja)
Inventor
Yasuhiro Yoda
泰宏 余田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP6300632A priority Critical patent/JPH08159360A/en
Publication of JPH08159360A publication Critical patent/JPH08159360A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)

Abstract

PURPOSE: To effectively prevent the occurrence of the abnormal sound and abnormal vibration of an inner pipe due to a water hammer without impairing workability, regarding a pulsation preventing structure for the inner pipe of a sheathed pipe. CONSTITUTION: Regarding a structure for preventing the pulsation of a flexible inner pipe 12 led through a sheathed pipe 11, an inner pipe support 13 is fitted to the pipe 12 at a lengthwise direction intermediate position, and the surface soft section 13A of the support 13 is kept in contact with the internal surface of the sheathed pipe 11, with the pipe 12 passed through the pipe 11. A gap between the internal surface of the pipe 11 and the external surface of the pipe 12 is thereby maintained.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は鞘管内の内管脈動防止構
造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner pipe pulsation preventing structure in a sheath pipe.

【０００２】[0002]

【従来の技術】建物内の給水、給湯配管システム等とし
て、鞘管ヘッダー式配管システムがある。この鞘管ッヘ
ッダー式配管システムは、特開平5-126293号公報に記載
の如く、ポリエチレン管等からなる蛇腹状鞘管を床内、
壁内等に敷設し、この鞘管内に架橋ポリエチレン管等か
らなる可撓内管を通管し、内管の一方の端末を給水ヘッ
ダー、給湯ヘッダーに接続し、内管の他方の端末を台
所、ユニットバス等の給水栓、給湯栓に接続して構築さ
れる。2. Description of the Related Art A sheath pipe header type piping system is known as a water supply system and hot water supply system in a building. This sheath pipe header type piping system, as described in JP-A-5-126293, a bellows-like sheath pipe made of polyethylene pipe or the like in the floor,
Laying in a wall etc., passing a flexible inner pipe made of cross-linked polyethylene pipe etc. in this sheath pipe, connecting one end of the inner pipe to the water supply header and the hot water supply header, and the other end of the inner pipe to the kitchen It is constructed by connecting to a water tap or hot water tap such as a unit bath.

【０００３】この鞘管ヘッダー配管システムでは、例え
ば給水栓を開状態から一気に全閉するときの内管内水圧
の急激な上昇（水圧が例えば３倍程度に上昇）に基づく
ウォータハンマーを生ずる。ウォーターハンマーは、内
管を脈動させ、この脈動する内管が鞘管内面をたたいて
異音を生ずるものとなる。In this sheath pipe header piping system, for example, a water hammer is generated due to a rapid increase in water pressure in the inner pipe (water pressure increases to about three times, for example) when the water tap is fully closed at once. The water hammer causes the inner tube to pulsate, and the pulsating inner tube strikes the inner surface of the sheath tube to cause abnormal noise.

【０００４】そこで、従来技術１（上述の特開平5-1262
93号公報）では、内管脈動防止構造として、鞘管内に内
管を通管した後、鞘管の両端支持部に対し鞘管の中間部
を強制的に曲げ変形させるように支持し、鞘管の内面に
対する内管の接触箇所を増加させることにより、ウォー
ターハンマーによる内管の脈動を抑制して前述の異音発
生を低減するようにしている。Therefore, the prior art 1 (the above-mentioned Japanese Patent Laid-Open No. 5-1262)
No. 93), as an inner pipe pulsation preventive structure, after passing the inner pipe through the sheath pipe, the middle portion of the sheath pipe is forcibly bent and deformed to support both ends of the sheath pipe. By increasing the number of contact points of the inner pipe with the inner surface of the pipe, the pulsation of the inner pipe due to the water hammer is suppressed and the above-mentioned abnormal noise generation is reduced.

【０００５】また、従来技術２では、鞘管内に内管を通
管するに際し、内管の全長に渡って該内管の周囲にスポ
ンジ状テープを巻き付けながら、該内管を鞘管内に通管
し、このスポンジ状テープの存在により、ウォーターハ
ンマーによる内管の脈動抑制と、前述の異音低減とを図
っている。Further, in the prior art 2, when the inner tube is passed through the sheath tube, the inner tube is passed through the sheath tube while winding the sponge tape around the inner tube over the entire length of the inner tube. However, the presence of this sponge-like tape is intended to suppress the pulsation of the inner tube by the water hammer and reduce the above-mentioned abnormal noise.

【０００６】[0006]

【発明が解決しようとする課題】然しながら、従来技術
１には、下記、の問題点がある。 鞘管内に内管を通管した後、鞘管の通管部を強制的に
曲げ変形させて支持させる作業を必要とし、施工性が悪
い。However, the prior art 1 has the following problems. The workability is poor because it requires the work of passing the inner pipe through the sheath pipe and then forcibly bending and deforming the support portion of the sheath pipe to support it.

【０００７】内管が鞘管内面に直接強く接触するもの
であるから、ウォーターハンマーによって内管に生ずる
振動が全く減衰されることなく鞘管に伝わり、鞘管まわ
りに異常振動を生ずるおそれがある。Since the inner pipe is in strong contact with the inner surface of the sheath pipe, the vibration generated in the inner pipe by the water hammer may be transmitted to the sheath pipe without being damped at all, and abnormal vibration may occur around the sheath pipe. .

【０００８】また、従来技術２には、下記、の問題
点がある。 内管の全長に渡ってスポンジ状のテープを巻き付ける
ものであるため、施工性が悪い。The prior art 2 has the following problems. Since the sponge-like tape is wound over the entire length of the inner pipe, workability is poor.

【０００９】スポンジ状のテープを全長に巻き付けた
内管を鞘管内へ通管するものであるため、通管抵抗が大
きく、通管に困難をともなう。[0009] Since an inner tube wound with a sponge-like tape over its entire length is passed through the sheath tube, the tube resistance is large and the tube is difficult to pass.

【００１０】本発明は、鞘管内の内管脈動防止構造にお
いて、施工性を損なわずに、内管のウォーターハンマー
による脈動に基づく異音、異常振動を効果的に防止する
ことを目的とする。It is an object of the present invention to effectively prevent abnormal noise and abnormal vibration due to pulsation due to a water hammer of the inner pipe in the inner pipe pulsation preventing structure in the sheath pipe without impairing the workability.

【００１１】[0011]

【課題を解決するための手段】請求項１に記載の本発明
は、鞘管内に通管された可撓内管の脈動防止構造におい
て、内管の長手方向中間部に内管サポートを取着し、内
管を鞘管内に通管した状態下で、内管サポートの表面軟
質部が鞘管内面に接して鞘管内面と内管外面との間隔を
保持するものである。According to a first aspect of the present invention, in a pulsation preventive structure for a flexible inner tube which is passed through a sheath tube, an inner tube support is attached to an intermediate portion in the longitudinal direction of the inner tube. Then, in a state where the inner pipe is passed through the sheath pipe, the surface soft portion of the inner pipe support is in contact with the inner face of the sheath pipe to maintain the distance between the inner face of the sheath pipe and the outer face of the inner pipe.

【００１２】請求項２に記載の本発明は、請求項１に記
載の本発明において更に、前記内管サポートが軟質樹脂
製の砲弾状をなし、内管が挿着される中心孔と、内管を
中心孔に導入するためのスリットと、内管が接着するよ
うに中心孔内面に設けた両面粘着テープとを有してなる
ものである。According to a second aspect of the present invention, in addition to the first aspect of the present invention, the inner pipe support has a shell shape made of a soft resin, and a center hole into which the inner pipe is inserted, It has a slit for introducing the tube into the center hole and a double-sided adhesive tape provided on the inner surface of the center hole so that the inner tube is bonded.

【００１３】[0013]

【作用】請求項１に記載の本発明によれば下記〜の
作用がある。 内管の長手方向中間部に取着した内管サポートは、そ
の表面軟質部が鞘管内面に接して鞘管内面と内管外面と
の間隔を保持する。このため、内管サポートが内管のウ
ォーターハンマーによる脈動に対する緩衝材として機能
し、その脈動を抑制するとともに、内管に生ずる振動を
減衰して鞘管まわりに異常振動が伝わるのを回避する。
また、内管サポートが鞘管内面と内管外面との間隔を保
持するから、内管の内管サポートから離れた部分の脈動
が鞘管内面をたたくことを防止する。According to the present invention as set forth in claim 1, the following effects are obtained. The inner tube support attached to the longitudinal middle portion of the inner tube has a surface soft portion in contact with the inner surface of the sheath tube to maintain a distance between the inner surface of the sheath tube and the outer surface of the inner tube. Therefore, the inner pipe support functions as a cushioning material against pulsation of the inner pipe caused by the water hammer, suppresses the pulsation, and damps the vibration generated in the inner pipe to prevent the abnormal vibration from being transmitted around the sheath pipe.
Moreover, since the inner pipe support maintains the distance between the inner surface of the sheath pipe and the outer surface of the inner pipe, pulsation of the portion of the inner pipe separated from the inner pipe support is prevented from hitting the inner surface of the sheath pipe.

【００１４】内管の長手方向中間部に内管サポートを
取着するだけで、上記の如くに効果的な内管脈動防止
構造を得ることができ、施工性が良い。By simply attaching the inner pipe support to the intermediate portion in the longitudinal direction of the inner pipe, the effective inner pipe pulsation preventing structure as described above can be obtained, and the workability is good.

【００１５】内管サポートが備える表面軟質部は、緩
衝機能を果たすだけでなく、内管を鞘管内へ通管する際
の通管抵抗を大とすることがなく、通管作業性に悪影響
を与えないから、この点においても施工性が良い。The soft surface portion of the inner pipe support not only fulfills the cushioning function but also does not increase the pipe resistance when the inner pipe is inserted into the sheath pipe, which adversely affects the pipe workability. Since it is not given, the workability is also good in this respect.

【００１６】請求項２に記載の本発明によれば下記の
作用がある。 内管サポートが砲弾状をなすものであるから、鞘管内
への内管の通管時に、内管サポートをスムースに挿入で
きる。また、内管を中心孔に導入するためのスリットを
備え、かつ中心孔内面に両面粘着テープを備えているの
で、内管サポートを簡易に内管中間部まわりに接着して
取着できる。The present invention according to claim 2 has the following effects. Since the inner pipe support has a shell-like shape, the inner pipe support can be smoothly inserted when the inner pipe is inserted into the sheath pipe. Further, since the slit for introducing the inner pipe into the central hole is provided and the double-sided adhesive tape is provided on the inner surface of the central hole, the inner pipe support can be easily attached and attached around the middle portion of the inner pipe.

【００１７】[0017]

【実施例】図１は鞘管内への内管の通管状態を示す模式
図、図２は内管サポートを示す模式図、図３は内管サポ
ートを内管に取着した状態を示す模式図である。EXAMPLES FIG. 1 is a schematic diagram showing a state of the inner pipe passing through the sheath pipe, FIG. 2 is a schematic diagram showing the inner pipe support, and FIG. 3 is a diagram showing a state in which the inner pipe support is attached to the inner pipe. It is a figure.

【００１８】図１において、１１は鞘管、１２は内管、
１３は内管サポートである。鞘管１１は、ポリエチレン
管等の蛇腹管からなり、床内、壁内等に敷設され、両端
部及び中間部を略Ｕ字サドル状の固定具により床材、壁
材に固定される。In FIG. 1, 11 is a sheath tube, 12 is an inner tube,
13 is an inner pipe support. The sheath pipe 11 is made of a bellows pipe such as a polyethylene pipe, is laid in the floor, in the wall, and the like, and its both ends and the intermediate portion are fixed to the floor material and the wall material by substantially U-shaped saddle-shaped fixtures.

【００１９】内管１２は、架橋ポリエチレン管等の可撓
管からなり、上記鞘管１１内に通管され、一方の端末を
給水ヘッダー、給湯ヘッダーに接続され、他方の端末を
台所、ユニットバス等の給水栓、給湯栓に接続される。The inner pipe 12 is made of a flexible pipe such as a cross-linked polyethylene pipe, is passed through the sheath pipe 11, one end is connected to a water supply header and a hot water supply header, and the other end is connected to a kitchen or a unit bath. Etc. are connected to the water tap and hot water tap.

【００２０】内管サポート１３は、上記内管１２の長手
方向中間部の複数位置に所定の間隔をおいて取着され、
鞘管１１内に通管される内管１２とともに鞘管１１内に
挿入される。内管サポート１３は、内管１２を鞘管１１
内に通管した状態下で、その表面軟質部１３Ａが鞘管１
１の内面に接して、鞘管１１の内面と内管１２の外面と
の間隔を保持する。The inner pipe support 13 is attached to the inner pipe 12 at a plurality of positions in the longitudinally intermediate portion at predetermined intervals,
It is inserted into the sheath pipe 11 together with the inner pipe 12 which is passed through the sheath pipe 11. The inner pipe support 13 connects the inner pipe 12 to the sheath pipe 11
The surface soft portion 13A of the sheath tube 1 under the condition that the tube 1 is passed through the inside
The inner surface of the sheath tube 11 and the outer surface of the inner tube 12 are held in contact with the inner surface of the inner tube 1.

【００２１】ここで、内管サポート１３は、図２に示す
如く、ゴム、軟質樹脂等から成形された全体軟質の砲弾
状をなす。そして、内管サポート１３は、砲弾状外面を
形成する外筒部１３Ｂと、この外筒部１３Ｂの先端部に
連なる中心筒部１３Ｃとから構成される。このとき、内
管サポート１３は、内管１２が挿着される中心孔１３Ｄ
と、内管１２を中心孔１３Ｄに導入するために外筒部１
３Ｂと中心筒部１３Ｃに設けられるスリット１３Ｅと、
内管１２が接着するように中心孔１３Ｄの内面にあらか
じめ設けてある両面粘着テープ１３Ｆとを備える。Here, as shown in FIG. 2, the inner pipe support 13 is formed of rubber, soft resin or the like, and has an overall soft shell shape. The inner pipe support 13 is composed of an outer cylindrical portion 13B forming a shell-shaped outer surface and a central cylindrical portion 13C connected to the tip of the outer cylindrical portion 13B. At this time, the inner pipe support 13 has a central hole 13D into which the inner pipe 12 is inserted.
And the outer tube portion 1 for introducing the inner tube 12 into the central hole 13D.
3B and the slit 13E provided in the central tubular portion 13C,
A double-sided adhesive tape 13F is provided in advance on the inner surface of the central hole 13D so that the inner tube 12 is bonded.

【００２２】従って、内管サポート１３は、図３に示す
如く、スリット１３Ｅを弾性的に開いて、内管１２をこ
のスリット１３Ｅから中心孔１３Ｄに挿着し、内管１２
を両面粘着テープ１３Ｆによりその中心孔１３Ｄに接着
することにて、内管１２の中間部に固定的に取着され
る。Therefore, in the inner pipe support 13, as shown in FIG. 3, the slit 13E is elastically opened, and the inner pipe 12 is inserted from the slit 13E into the central hole 13D.
Is adhered to the center hole 13D with a double-sided adhesive tape 13F, so that it is fixedly attached to the intermediate portion of the inner tube 12.

【００２３】以下、本実施例の作用について説明する。 内管１２の長手方向中間部に取着した内管サポート１
３は、その表面軟質部１３Ａが鞘管１１内面に接して鞘
管１１内面と内管１２外面との間隔を保持する。このた
め、内管サポート１３が内管１２のウォーターハンマー
による脈動に対する緩衝材として機能し、その脈動を抑
制するとともに、内管１２に生ずる振動を減衰して鞘管
１１まわりに異常振動が伝わるのを回避する。また、内
管サポート１３が鞘管１１内面と内管１２外面との間隔
を保持するから、内管１２の内管サポート１３から離れ
た部分の脈動が鞘管１１内面をたたくことを防止する。The operation of this embodiment will be described below. Inner pipe support 1 attached to the middle portion of the inner pipe 12 in the longitudinal direction
3, the surface soft portion 13A is in contact with the inner surface of the sheath tube 11 to maintain the distance between the inner surface of the sheath tube 11 and the outer surface of the inner tube 12. Therefore, the inner pipe support 13 functions as a cushioning material against the pulsation of the inner pipe 12 due to the water hammer, suppresses the pulsation, attenuates the vibration generated in the inner pipe 12, and transmits the abnormal vibration around the sheath pipe 11. To avoid. Further, since the inner pipe support 13 maintains the distance between the inner surface of the sheath pipe 11 and the outer surface of the inner pipe 12, it prevents the pulsation of the portion of the inner pipe 12 away from the inner pipe support 13 from hitting the inner face of the sheath pipe 11.

【００２４】内管１２の長手方向中間部に内管サポー
ト１３を取着するだけで、上記の如くに効果的な内管
脈動防止構造を得ることができ、施工性が良い。By merely attaching the inner pipe support 13 to the middle portion of the inner pipe 12 in the longitudinal direction, an effective inner pipe pulsation preventing structure as described above can be obtained, and the workability is good.

【００２５】内管サポート１３が備える表面軟質部１
３Ａは、緩衝機能を果たすだけでなく、内管１２を鞘管
１１内へ通管する際の通管抵抗を大とすることがなく、
通管作業性に悪影響を与えないから、この点においても
施工性が良い。The soft surface portion 1 of the inner pipe support 13
3A not only fulfills a buffering function, but also does not increase the pipe resistance when the inner pipe 12 is inserted into the sheath pipe 11,
Since the pipe workability is not adversely affected, the workability is also good in this respect.

【００２６】内管サポート１３が砲弾状をなすもので
あるから、鞘管１１内への内管１２の通管時に、内管サ
ポート１３をスムースに挿入できる。また、内管１２を
中心孔１３Ｄに導入するためのスリット１３Ｅを備え、
かつ中心孔１３Ｄ内面に両面粘着テープ１３Ｆを備えて
いるので、内管サポート１３を簡易に内管１２中間部ま
わりに接着して取着できる。Since the inner pipe support 13 has a shell shape, the inner pipe support 13 can be smoothly inserted when the inner pipe 12 is inserted into the sheath pipe 11. Further, a slit 13E for introducing the inner tube 12 into the central hole 13D is provided,
Moreover, since the double-sided adhesive tape 13F is provided on the inner surface of the center hole 13D, the inner pipe support 13 can be easily attached and attached around the middle portion of the inner pipe 12.

【００２７】以上、本発明の実施例を図面により詳述し
たが、本発明の具体的な構成はこの実施例に限られるも
のではなく、本発明の要旨を逸脱しない範囲の設計の変
更等があっても本発明に含まれる。例えば、内管サポー
トは、全体軟質材料からなるものでなく、内管への接合
部は硬質材料からなり、鞘管内面に接する表面部のみを
軟質材料にて構成するものであっても良い。The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and changes in design within the scope not departing from the gist of the present invention can be made. Even if it exists, it is included in the present invention. For example, the inner pipe support may not be made of a soft material as a whole, but the joint portion to the inner pipe may be made of a hard material, and only the surface portion in contact with the inner surface of the sheath pipe may be made of a soft material.

【００２８】また、内管サポートは、両面粘着テープに
より内管に取着されるものでなく、接着剤により内管に
取着され、或いは止めねじ等の機械的接合手段により内
管に取着されるものであっても良い。The inner pipe support is not attached to the inner pipe by the double-sided adhesive tape, but is attached to the inner pipe by an adhesive or is attached to the inner pipe by a mechanical joining means such as a set screw. It may be something that is done.

【００２９】[0029]

【発明の効果】以上のように本発明によれば、鞘管内の
内管脈動防止構造において、施工性を損なわずに、内管
のウォーターハンマーによる脈動に基づく異音、異常振
動を効果的に防止することができる。As described above, according to the present invention, in the inner pipe pulsation preventing structure in the sheath pipe, the abnormal noise and the abnormal vibration due to the pulsation by the water hammer of the inner pipe can be effectively performed without impairing the workability. Can be prevented.

【図面の簡単な説明】[Brief description of drawings]

【図１】図１は鞘管内への内管の通管状態を示す模式図
である。FIG. 1 is a schematic diagram showing a state in which an inner pipe is inserted into a sheath pipe.

【図２】図２は内管サポートを示す模式図である。FIG. 2 is a schematic view showing an inner pipe support.

【図３】図３は内管サポートを内管に取着した状態を示
す模式図である。FIG. 3 is a schematic view showing a state in which the inner pipe support is attached to the inner pipe.

【符号の説明】[Explanation of symbols]

１１ 鞘管 １２ 内管 １３ 内管サポート １３Ａ 表面軟質部 １３Ｄ 中心孔 １３Ｅ スリット １３Ｆ 両面粘着テープ 11 Sheath pipe 12 Inner pipe 13 Inner pipe support 13A Surface soft part 13D Center hole 13E Slit 13F Double-sided adhesive tape

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 鞘管内に通管された可撓内管の脈動防止
構造において、 内管の長手方向中間部に内管サポートを取着し、 内管を鞘管内に通管した状態下で、内管サポートの表面
軟質部が鞘管内面に接して鞘管内面と内管外面との間隔
を保持することを特徴とする鞘管内の内管脈動防止構
造。1. A pulsation preventive structure for a flexible inner tube which is passed through the sheath tube, wherein an inner tube support is attached to an intermediate portion in the longitudinal direction of the inner tube, and the inner tube is passed through the sheath tube. The inner pipe pulsation preventive structure in the sheath pipe, wherein the soft surface portion of the inner pipe support is in contact with the inner face of the sheath pipe to maintain a distance between the inner face of the sheath pipe and the outer face of the inner pipe. 【請求項２】 前記内管サポートが軟質樹脂製の砲弾状
をなし、内管が挿着される中心孔と、内管を中心孔に導
入するためのスリットと、内管が接着するように中心孔
内面に設けた両面粘着テープとを有してなる請求項１記
載の鞘管内の内管脈動防止構造。2. The inner pipe support has a shell shape made of a soft resin and has a central hole into which the inner pipe is inserted, a slit for introducing the inner pipe into the central hole, and the inner pipe to be adhered. The inner pipe pulsation preventing structure in the sheath pipe according to claim 1, further comprising a double-sided adhesive tape provided on the inner surface of the central hole.
JP6300632A 1994-12-05 1994-12-05 Pulsation preventing structure for inner pipe of sheathed pipe Pending JPH08159360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6300632A JPH08159360A (en) 1994-12-05 1994-12-05 Pulsation preventing structure for inner pipe of sheathed pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6300632A JPH08159360A (en) 1994-12-05 1994-12-05 Pulsation preventing structure for inner pipe of sheathed pipe

Publications (1)

Publication Number Publication Date
JPH08159360A true JPH08159360A (en) 1996-06-21

Family

ID=17887207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6300632A Pending JPH08159360A (en) 1994-12-05 1994-12-05 Pulsation preventing structure for inner pipe of sheathed pipe

Country Status (1)

Country Link
JP (1) JPH08159360A (en)

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