JPH06337087A - Branch pipe connecting method and bonnet connecting method - Google Patents

Branch pipe connecting method and bonnet connecting method

Info

Publication number
JPH06337087A
JPH06337087A JP5151322A JP15132293A JPH06337087A JP H06337087 A JPH06337087 A JP H06337087A JP 5151322 A JP5151322 A JP 5151322A JP 15132293 A JP15132293 A JP 15132293A JP H06337087 A JPH06337087 A JP H06337087A
Authority
JP
Japan
Prior art keywords
tube
valve box
pipe
valve
bonnet
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
JP5151322A
Other languages
Japanese (ja)
Inventor
Takeo Hanaoka
威夫 花岡
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.)
Takasago Thermal Engineering Co Ltd
Original Assignee
Takasago Thermal Engineering 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 Takasago Thermal Engineering Co Ltd filed Critical Takasago Thermal Engineering Co Ltd
Priority to JP5151322A priority Critical patent/JPH06337087A/en
Publication of JPH06337087A publication Critical patent/JPH06337087A/en
Pending legal-status Critical Current

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  • Branch Pipes, Bends, And The Like (AREA)
  • Valve Housings (AREA)

Abstract

PURPOSE:To allow an easy connecting work, and further allow the same process to be applied for connecting a tube material of different diameter by forming flat a tube wall for fastening the end of another tube material as a branch tube around a main tube material and, then, fastening the end of the branch tube material. CONSTITUTION:Round area P for connecting the steel branch tube 3 of a main tube 1 is formed to be flat with a press. The size of the area P is set to have the same diameter as the outer diameter of the branch tube 3. A round branch tube penetration hole 2 having such a size as corresponding to the inner diameter of the branch tube 3 is drilled through the flattened area P with a suitable drilling device. Then, the end of the tube 3 is made to adhere to the peripheral section of the hole 2 and fastened to the external side of the main tube 1 at a welded position 4, using weld or the like. According to this constitution, no special forming process is required, and a welding work for connecting a tube can be easily carried out.

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、分岐管の取付方法、及
び当該取付方法を応用したボンネットの取付方法に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a branch pipe mounting method and a bonnet mounting method applying the mounting method.

【0002】[0002]

【従来の技術】例えば図8に示したように、外周が真円
の一般の鋼管101の外周に、分岐管とする他の鋼管1
02を固着して、これら各鋼管の管路による分岐流路を
構成する場合、鋼管102の端部を鋼管101の外周に
密着させる必要があるため、従来は図9に示したよう
に、鋼管102の端部102aを鋼管101の外周に適
合する形状、いわゆる「鞍形」に成形し、その後当該端
部102aを溶接等によって鋼管101の所定箇所(分
岐流路を構成するための貫通孔が穿たれている箇所)に
固着するようにしている。
2. Description of the Related Art For example, as shown in FIG. 8, another steel pipe 1 serving as a branch pipe is formed on the outer periphery of a general steel pipe 101 having a perfect outer periphery.
When 02 is fixed to form a branch flow path by the pipeline of each of these steel pipes, the end portion of the steel pipe 102 needs to be brought into close contact with the outer circumference of the steel pipe 101. Therefore, as shown in FIG. The end portion 102a of the steel pipe 102 is formed into a shape that fits the outer circumference of the steel pipe 101, that is, a so-called "saddle shape", and then the end portion 102a is welded or the like to a predetermined portion of the steel pipe 101 (a through hole for forming a branch channel is formed). It is fixed to the place where it is worn.

【0003】[0003]

【発明が解決しようとする課題】しかしながら鋼管10
2の端部102aをそのように鋼管101の外周にマッ
チする形状に成形加工するのは、手間がかかり、またそ
の際の加工精度も高いものが要求される。しかもかかる
加工に伴って必然的にコスト高を招いてしまう。また鋼
管101の径が異なるとその外周の曲率半径も違ってく
るため、それに合わせて分岐管とする鋼管102の端部
102aの上記「鞍形」加工も、その形態を変える必要
がある。従って、各種径の大きさに対応できる分岐管の
取付方法とはいえず、汎用性に欠けていた。
However, the steel pipe 10
It takes time and effort to form the second end portion 102a into a shape that matches the outer circumference of the steel pipe 101, and it is required to have high processing accuracy. Moreover, such processing inevitably causes a high cost. Further, if the diameter of the steel pipe 101 is different, the radius of curvature of the outer circumference is also different. Therefore, the form of the "saddle-shaped" processing of the end portion 102a of the steel pipe 102 to be a branch pipe must be changed accordingly. Therefore, it cannot be said that the branch pipe can be attached to various diameters, and lacks versatility.

【0004】本発明はかかる点に鑑みてなされたもので
あり、取付容易でかつ径の異なった大きさの管材に対し
ても同一プロセスで取付作業が行える分岐管の取付方法
を提供して上記問題の解決を図ることを目的とする。
The present invention has been made in view of the above point, and provides a method for mounting a branch pipe which is easy to mount and can be mounted in the same process even on pipe materials having different diameters. The purpose is to solve the problem.

【0005】また本発明の別の目的は、上記取付方法を
利用して、例えば実開平3−94474号公報や実開平
4−32363号公報などにおいて発明者が既に提案し
ている市販鋼管を用いた各種弁について、その製造、組
み付け等を簡素化することにある。
Another object of the present invention is to use a commercially available steel pipe, which has been already proposed by the inventor in, for example, Japanese Utility Model Laid-Open No. 3-94474 and Japanese Utility Model Laid-Open No. 4-32363, utilizing the above-mentioned mounting method. It is to simplify the manufacturing, assembling, etc. of the various valves that were used.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するた
め、まず請求項1では、鋼管などの管材の外周に分岐管
となる他の管材の端部を固着する方法において、管材外
周における前記固着箇所管壁を平坦に成形加工し、その
後前記他の管材の端部を管材に固着させることを特徴と
する、分岐管取付方法を提供する。
In order to achieve the above object, first, in claim 1, in a method of fixing an end portion of another pipe material to be a branch pipe to an outer circumference of a pipe material such as a steel pipe, the fixing on the outer circumference of the pipe material. Provided is a branch pipe mounting method, characterized in that a pipe wall of a spot is formed into a flat shape, and then an end portion of the other pipe member is fixed to the pipe member.

【0007】また請求項2では、鋼管などの管材を弁箱
とし、一端部に弁箱内流路を遮断する弁体が固定されか
つ他端部が弁箱外に位置する弁棒を回転自在に支持する
筒状のボンネットを有し、さらに前記ボンネットは弁箱
の軸心に対して直交するように弁箱に固着され、前記弁
棒の回転によって弁箱内流路が遮断自在となるように構
成されている弁において、前記ボンネットを弁箱に固着
するにあたり、弁箱外周における前記固着箇所管壁を平
坦に成形加工し、その後前記ボンネットを弁箱に固着さ
せることを特徴とする、ボンネットの取付方法を提供す
る。
Further, according to the present invention, a pipe material such as a steel pipe is used as a valve box, and a valve element for blocking a flow path in the valve box is fixed to one end and a valve rod whose other end is located outside the valve box is rotatable. A tubular bonnet that is supported on the valve box, and the bonnet is fixed to the valve box so as to be orthogonal to the axis of the valve box, and the flow path inside the valve box can be blocked by rotation of the valve rod. In the valve configured as described above, in fixing the bonnet to the valve box, the tube wall of the fixing point on the outer circumference of the valve box is formed into a flat shape, and then the bonnet is fixed to the valve box. To provide a mounting method.

【0008】[0008]

【作用】請求項1の分岐管取付方法よれば、鋼管などの
管材の外周における分岐箇所、即ち分岐管となる他の管
材端部の固着箇所管壁を平坦に成形加工するので、当該
分岐管となる他の管材端部は、平坦なままでこれを密着
して接合することができる。従って、従来のような「鞍
形」加工は不要である。
According to the branch pipe mounting method of the first aspect, since the branch point on the outer periphery of the pipe material such as a steel pipe, that is, the fixing point of the end portion of the other pipe material to be the branch pipe is formed into a flat wall, the branch pipe concerned. The other end portions of the pipe material can be adhered and joined in a flat state. Therefore, the conventional "saddle-shaped" processing is unnecessary.

【0009】なお、流路を分岐させるために管材の外周
に穿設する分岐貫通孔は、上記平坦に成形加工した後に
当該平坦部分に穿設すればよく、分岐管となる他の管材
端部の実際の固着は、かかる分岐貫通孔の穿設後に実施
される。また管壁を平坦に成形加工するに当たっては、
従来既存の単純なプレス加工によってこれを容易に実現
することができる。
The branch through hole formed in the outer periphery of the pipe material for branching the flow path may be formed in the flat portion after the flat forming, and the other end portion of the pipe material to be the branch pipe. The actual fixing of is performed after the branch through holes are drilled. Also, in forming the tube wall flat,
This can be easily realized by the existing simple press working.

【0010】請求項2によれば、弁箱は請求項1におけ
る管材に、また弁棒を回転自在に支持するボンネットは
請求項1における分岐管となる他の管材に相当する。従
って、ボンネットの端部は平坦なままでこれを弁箱外周
に接合させることができ、請求項1と同様、ボンネット
端部を弁箱外周に適合させるための既述の「鞍形」成形
加工は不要である。それゆえ発明者が既に提案してい
る、鋼管などの市販管材を弁箱とし、一端部に弁箱内流
路を遮断する弁体が固定されかつ他端部が弁箱外に位置
する弁棒を回転自在に支持する筒状のボンネットを有
し、さらに前記ボンネットは弁箱の軸心に対して直交す
るように弁箱に固着され、前記弁棒の回転によって弁箱
内流路が遮断自在となるように構成されているタイプの
弁を、容易に製造、構築することが可能である。
According to the second aspect, the valve box corresponds to the pipe material in the first aspect, and the bonnet that rotatably supports the valve rod corresponds to the other pipe material serving as the branch pipe in the first aspect. Therefore, the end of the bonnet can be joined to the outer circumference of the valve box while the end remains flat, and the "saddle-shaped" molding process for fitting the end of the bonnet to the outer circumference of the valve box can be performed as in the case of claim 1. Is unnecessary. Therefore, a commercially available pipe material such as a steel pipe, which has been already proposed by the inventor, is used as a valve box, and a valve element for blocking a flow path in the valve box is fixed at one end and the other end is located outside the valve box. Has a cylindrical bonnet that rotatably supports the bonnet, and the bonnet is fixed to the valve box so as to be orthogonal to the axis of the valve box, and the flow path inside the valve box can be blocked by the rotation of the valve rod. It is possible to easily manufacture and construct a valve of the type configured so that

【0011】[0011]

【実施例】以下、本発明の実施例を図面に基づき説明す
れば、図1は一般の市販鋼管からなる主管1の平面を示
しており、同図における真円状のエリアPが分岐管の接
合箇所である。このエリアPをまずプレス加工によって
平坦に成形加工する。エリアPの大きさは、後述の分岐
管の外径と同一になるように設定してある。成形加工後
の状態は、図2、図3に示した通りである。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a plane of a main pipe 1 made of a general commercially available steel pipe, and a perfect circular area P in FIG. It is a joint. First, the area P is flattened by press working. The size of the area P is set to be the same as the outer diameter of the branch pipe described later. The state after the molding process is as shown in FIGS. 2 and 3.

【0012】そして図4に示したように、エリアPに対
して適宜の穿設装置によって分岐管の内径に対応した大
きさの真円形状の分岐貫通孔2を穿設する。この場合
も、エリアPに対してそのような分岐貫通孔2を穿設す
るにあたり、エリアPの表面はフラットであるので、穿
設作業がしやすくなっている。
Then, as shown in FIG. 4, a branch through hole 2 having a perfect circle shape having a size corresponding to the inner diameter of the branch pipe is bored in the area P by an appropriate punching device. Also in this case, when the branch through-hole 2 is formed in the area P, the surface of the area P is flat, which facilitates the drilling work.

【0013】後は、分岐管3の端部を図5に示したよう
に上記分岐貫通孔2の周縁部に密着させ、その端部を例
えば溶接等によって主管1の外周、即ちエリアP上に固
着すればよい。図5における4は、溶接箇所を表してい
る。
After that, the end portion of the branch pipe 3 is brought into close contact with the peripheral portion of the branch through hole 2 as shown in FIG. 5, and the end portion is placed on the outer periphery of the main pipe 1, that is, the area P by welding or the like. Just fix it. Reference numeral 4 in FIG. 5 represents a welded portion.

【0014】この場合、分岐管3の端部を分岐貫通孔2
の周縁部に密着させる際、当該周縁部はエリアP上に位
置しているから平坦面であり、従って分岐管3の端部も
また平坦なままでこれを密着させることができる。それ
ゆえ、例えば市販鋼管を必要長さに輪切り切断して分岐
管3を構成しても、その後当該切断端部を格別成形加工
する必要はなく、そのまま切断端部を主管1のエリアP
上に密着接合させることが可能である。
In this case, the end of the branch pipe 3 is connected to the branch through hole 2
When it is brought into close contact with the peripheral edge of the branch pipe 3, it is a flat surface because it is located on the area P, and therefore the end of the branch pipe 3 can also be brought into close contact with it while being flat. Therefore, for example, even if a commercially available steel pipe is sliced into required lengths to form the branch pipe 3, it is not necessary to form the cut end later, and the cut end is directly subjected to the area P of the main pipe 1.
It is possible to make a tight bond on top.

【0015】さらに分岐管3の端部と主管1の密着部分
は真円状となっているから、その後の溶接作業にあたっ
ても、当該真円に沿って作業を行うための単純な溶接作
業で済み、この点での作業も簡素化され、またこれを迅
速に実施することが可能となっている。また以上のよう
な、簡素化されたプロセス、使用した材料等を鑑みる
と、全体としても極めて単純で低コストなものとなって
いる。
Further, since the end portion of the branch pipe 3 and the contact portion of the main pipe 1 are in a perfect circle shape, the subsequent welding work is simply a welding work along the perfect circle. The work in this respect is also simplified, and it is possible to carry out this quickly. Further, in view of the above-described simplified process, used materials, etc., the overall structure is extremely simple and low in cost.

【0016】次に第2実施例を図6、図7に基づいて説
明すると、この第2実施例は本発明をバタフライ弁11
に対して適用した例を示している。図6はこのバタフラ
イ弁11の断面を示しており、このバタフライ弁11に
使用された弁箱12は、市販鋼管を必要長さに切断して
構成されたものであり、その一端部(図1における右
側)には、継手構成部材である拡径されたつば部52が
形成され、他端部には径大部14と径小部15とを有す
る球座部16が当該径小部15を溶接することによって
固着されている。この球座部16も市販鋼管を必要長さ
に切断してこれを適宜成形加工することによって得られ
たものである。
Next, a second embodiment will be described with reference to FIGS. 6 and 7. The second embodiment is a butterfly valve 11 according to the present invention.
The example applied to is shown. FIG. 6 shows a cross section of the butterfly valve 11, and the valve box 12 used for the butterfly valve 11 is constructed by cutting a commercially available steel pipe into a required length, and one end portion (see FIG. On the right side), a diameter-increasing collar portion 52, which is a joint component, is formed, and a ball seat portion 16 having a large diameter portion 14 and a small diameter portion 15 is formed on the other end portion of the small diameter portion 15. It is fixed by welding. The ball seat portion 16 is also obtained by cutting a commercially available steel pipe into a required length and appropriately forming this.

【0017】そしてこの弁箱12の中央部外周には、弁
箱12内の流路を遮断自在とする円板状の弁体17の上
部を固着支持する弁棒18が回転自在に挿入されるボン
ネット19の下端部が固着されている。
A valve rod 18 fixedly supporting an upper portion of a disc-shaped valve body 17 for freely blocking the flow passage in the valve box 12 is rotatably inserted into the outer periphery of the central portion of the valve box 12. The lower end of the bonnet 19 is fixed.

【0018】このボンネット19を図6、7に示したよ
うに弁箱外周に固着するに当たっては、まず固着予定箇
所に対してプレス加工することにより、当該固着予定箇
所エリアを平坦に成形加工し、さらにこのエリアに弁棒
18が回転自在に貫通する貫通孔を穿設し、その後ボン
ネット19の下端部を固着予定箇所に密着させ、溶接等
によってこれを固着したものである。なおボンネット1
9の内部には、その下方端部に軸受20が装入され、ま
たその上方端部にはシール部材21がOリングによって
取り付けられている。
When fixing the bonnet 19 to the outer periphery of the valve box as shown in FIGS. 6 and 7, first, the area to be fixed is press-formed to flatten the area to be fixed. Further, a through hole through which the valve rod 18 rotatably passes is formed in this area, and then the lower end of the bonnet 19 is brought into close contact with a planned fixing portion, and this is fixed by welding or the like. Bonnet 1
A bearing 20 is installed at the lower end portion of the inside of 9, and a seal member 21 is attached to the upper end portion thereof by an O-ring.

【0019】一方、ボンネット19に対向した側の弁箱
12の外側にも、円筒状のボトムケース22が溶接によ
って取り付けられており、このボトムケース22内に装
入された軸受23の中に、下部弁棒24が、弁箱12の
管壁を貫通して軸回りに回転自在となるように挿入さ
れ、当該下部弁棒24の上端部に上記弁体17の下部が
支持されている。
On the other hand, a cylindrical bottom case 22 is also attached by welding to the outside of the valve box 12 on the side facing the bonnet 19, and a bearing 23 inserted into the bottom case 22 The lower valve rod 24 is inserted through the pipe wall of the valve box 12 so as to be rotatable about its axis, and the lower portion of the valve body 17 is supported on the upper end of the lower valve rod 24.

【0020】そしてこのボトムケース22を弁箱12の
外周に固着するにあたっても、上記のボンネット19の
固着の際と同様、予め固着予定箇所に対してプレス加工
することにより、当該固着予定箇所エリアを平坦に成形
加工し、さらにエリアに下部弁棒24が回転自在に貫通
する貫通孔を穿設し、その後ボトムケース22の下端部
を固着予定箇所に密着させ、溶接等によってこれを固着
したものである。
When the bottom case 22 is fixed to the outer periphery of the valve box 12, as in the case of fixing the bonnet 19, the area to be fixed is fixed by pressing the fixed fixing area in advance. It is formed into a flat shape, and further, a through hole through which the lower valve rod 24 rotatably passes is formed in the area, then the lower end portion of the bottom case 22 is brought into close contact with a planned fixing position, and this is fixed by welding or the like. is there.

【0021】従って、ボンネット19、ボトムケース2
2の固着が容易であり、しかもこれらの各固着端部もま
た平坦なままでよく、何ら特殊の成形加工をする必要が
ない。それゆえボンネット19、ボトムケース22もま
た、市販の管材を適宜必要長さに切断したものをそのま
ま使用することができ、製造コストの低廉化、作業の簡
素かが図られている。
Therefore, the bonnet 19 and the bottom case 2
The fixing of the two is easy, and each fixing end of these can also remain flat, and no special molding process is required. Therefore, as the bonnet 19 and the bottom case 22, a commercially available pipe material cut into a required length can be used as it is, and the manufacturing cost can be reduced and the work can be simplified.

【0022】なお図6において、25は弁体17と弁箱
内周とのシールをするためのゴム製のシートリングであ
り、26、27はこのシートリングを弁箱12内周側に
押さえてこれを固着するためのシートリテーナである。
そして図6における状態では、弁体17は弁箱12の流
路を遮断する位置にあり、この状態から弁棒18を90
゜回転させると、弁体17は図6における二点鎖線で示
す位置に角度を変え、流路を最大に開放するようになっ
ている。
In FIG. 6, reference numeral 25 denotes a rubber seat ring for sealing the valve body 17 and the inner circumference of the valve box, and 26 and 27 hold the seat ring to the inner circumference side of the valve box 12. A seat retainer for fixing this.
In the state shown in FIG. 6, the valve body 17 is at a position that blocks the flow path of the valve box 12, and the valve rod 18 is moved from this state.
When the valve body 17 is rotated by a degree, the valve body 17 changes its angle to the position shown by the chain double-dashed line in FIG.

【0023】[0023]

【発明の効果】請求項1の分岐管取付方法よれば、分岐
管となる他の管材端部は、平坦なままでこれを密着して
接合することができる。従って、従来のような「鞍形」
加工は不要であり、特殊な成形加工もまた不要である。
また当該固着の際の例えば溶接作業もこれを簡単に行う
ことが可能である。また管壁を平坦に成形加工するに当
たっては、従来既存の単純なプレス加工によってこれを
容易に実現することができる。従って用いる管材のコス
トや作業に要する時間、費用等を低廉に抑えることが可
能となっている。
According to the branch pipe mounting method of the first aspect, the other end portions of the pipe material to be the branch pipes can be closely joined to each other while being flat. Therefore, "saddle-shaped" as in the past
No processing is required and no special molding process is required.
Further, it is possible to easily perform, for example, a welding operation at the time of fixing. Further, in forming the pipe wall into a flat shape, this can be easily realized by the existing simple press forming. Therefore, the cost of the pipe material used, the time required for the work, the cost, etc. can be kept low.

【0024】請求項2によれば、弁棒を回転自在に支持
するためのボンネットを弁箱に固着するにあたり、上記
請求項1の効果をそのまま具有することができる。従っ
て弁箱、ボンネット等を全て市販鋼管等の管材で構成し
て、さらに簡素化された加工の下で、各種弁を構成する
ことが可能である。
According to the second aspect, when the bonnet for rotatably supporting the valve rod is fixed to the valve box, the effect of the first aspect can be provided as it is. Therefore, it is possible to configure the valve box, the bonnet, and the like with pipe materials such as commercially available steel pipes, and to configure various valves under further simplified processing.

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

【図1】実施例にかかる主管の平面図である。FIG. 1 is a plan view of a main pipe according to an embodiment.

【図2】図1のA−A線断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.

【図3】実施例にかかる主管の斜視図である。FIG. 3 is a perspective view of a main pipe according to an embodiment.

【図4】主管に分岐貫通孔を穿設した様子を示す断面図
である。
FIG. 4 is a cross-sectional view showing a state in which a branch through hole is formed in a main pipe.

【図5】主管に分岐管を固着した様子を示す断面図であ
る。
FIG. 5 is a cross-sectional view showing a state in which a branch pipe is fixed to a main pipe.

【図6】他の実施例にかかるバタフライ弁の構造を示す
縦断面図である。
FIG. 6 is a vertical cross-sectional view showing the structure of a butterfly valve according to another embodiment.

【図7】他の実施例にかかるバタフライ弁の側面図であ
る。
FIG. 7 is a side view of a butterfly valve according to another embodiment.

【図8】従来技術によって分岐管を固着した様子を示す
斜視図である。
FIG. 8 is a perspective view showing a state in which a branch pipe is fixed by a conventional technique.

【図9】従来技術の分岐管の端部を示す斜視図である。FIG. 9 is a perspective view showing an end portion of a conventional branch pipe.

【符号の説明】[Explanation of symbols]

1 主管 2 分岐貫通孔 3 分岐管 4 溶接箇所 11 バタフライ弁 12 弁箱 17 弁体 18 弁棒 19 ボンネット 22 ボトムケース 1 Main Pipe 2 Branch Through Hole 3 Branch Pipe 4 Welding Point 11 Butterfly Valve 12 Valve Box 17 Valve Body 18 Valve Rod 19 Bonnet 22 Bottom Case

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 管材の外周に分岐管となる他の管材の端
部を固着する方法において、管材外周における前記固着
箇所管壁を平坦に成形加工し、その後前記他の管材の端
部を管材に固着させることを特徴とする、分岐管取付方
法。
1. A method of fixing an end portion of another pipe material to be a branch pipe to an outer circumference of the pipe material, wherein the fixing portion pipe wall on the outer circumference of the pipe material is flattened, and then an end portion of the other pipe material is formed. A branch pipe mounting method, characterized in that the branch pipe is fixed to.
【請求項2】 管材を弁箱とし、一端部に弁箱内流路を
遮断する弁体が固定されかつ他端部が弁箱外に位置する
弁棒を回転自在に支持する筒状のボンネットを有し、さ
らに前記ボンネットは弁箱の軸心に対して直交するよう
に弁箱に固着され、前記弁棒の回転によって弁箱内流路
が遮断自在となるように構成されている弁において、前
記ボンネットを弁箱に固着するにあたり、弁箱外周にお
ける前記固着箇所管壁を平坦に成形加工し、その後前記
ボンネットを弁箱に固着させることを特徴とする、ボン
ネットの取付方法。
2. A tubular bonnet which uses a tubular member as a valve box, has a valve body fixed to one end for blocking a flow path in the valve box, and has the other end rotatably supporting a valve rod located outside the valve box. In the valve, wherein the bonnet is fixed to the valve box so as to be orthogonal to the axis of the valve box, and the flow path in the valve box can be blocked by the rotation of the valve rod. When fixing the bonnet to the valve box, the tube wall of the fixing point on the outer circumference of the valve box is formed into a flat shape, and then the bonnet is fixed to the valve box.
JP5151322A 1993-05-27 1993-05-27 Branch pipe connecting method and bonnet connecting method Pending JPH06337087A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5151322A JPH06337087A (en) 1993-05-27 1993-05-27 Branch pipe connecting method and bonnet connecting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5151322A JPH06337087A (en) 1993-05-27 1993-05-27 Branch pipe connecting method and bonnet connecting method

Publications (1)

Publication Number Publication Date
JPH06337087A true JPH06337087A (en) 1994-12-06

Family

ID=15516094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5151322A Pending JPH06337087A (en) 1993-05-27 1993-05-27 Branch pipe connecting method and bonnet connecting method

Country Status (1)

Country Link
JP (1) JPH06337087A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140043A (en) * 1989-04-17 1992-08-18 Duke University Stable ascorbic acid compositions
WO2014174954A1 (en) * 2013-04-22 2014-10-30 株式会社鷺宮製作所 Valve device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5140043A (en) * 1989-04-17 1992-08-18 Duke University Stable ascorbic acid compositions
WO2014174954A1 (en) * 2013-04-22 2014-10-30 株式会社鷺宮製作所 Valve device

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