JPH1026238A - Plug valve - Google Patents

Plug valve

Info

Publication number
JPH1026238A
JPH1026238A JP8182885A JP18288596A JPH1026238A JP H1026238 A JPH1026238 A JP H1026238A JP 8182885 A JP8182885 A JP 8182885A JP 18288596 A JP18288596 A JP 18288596A JP H1026238 A JPH1026238 A JP H1026238A
Authority
JP
Japan
Prior art keywords
divided
seat part
seat
main body
sheet portion
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
JP8182885A
Other languages
Japanese (ja)
Inventor
Masahiko Mori
正彦 森
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP8182885A priority Critical patent/JPH1026238A/en
Publication of JPH1026238A publication Critical patent/JPH1026238A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lift Valve (AREA)
  • Sliding Valves (AREA)

Abstract

PROBLEM TO BE SOLVED: To quickly perform repair works with ease at a work site, and make manufacturing costs low. SOLUTION: A ring shaped seat part 2 is cocentrically provided for a flow passage 1, a plug 3 is detachably provided for the seat part 2, the seat part 2 is formed out of a ring shaped seat main body 2A fixedly attached to the flow passage 1, and of an inner side seat part 2B which is fitted in a ring shaped recessed part 8 formed in the inner circumferential surface of the seat part main body 2A in such a way that it can be separated, the inner side seat part 2B is divided into plural numbers at specified intervals along the axial direction of the flow passage 1, out of divided seat parts 2a and 2b, the divided seat part 2b at the downstream side is fixedly attached to the seat part main body 2A, and the divided seat part 2a at the upstream side is held by the divided seat part 2b at the downstream side and the upstream side end surface 8a of the ring shaped recessed part 8.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、例えば化学触媒な
どの粉流体を含む高温流体を流通させる流路に設けられ
るプラグバルブに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plug valve provided in a flow path through which a high-temperature fluid including a powdery fluid such as a chemical catalyst flows.

【0002】[0002]

【従来の技術】従来、この種のプラグバルブの一例とし
て図3に示すものがある。これは、流路1のコーン部1
aに同心状に溶接aされた環状シート部2と、該シート
部2に嵌脱可能なプラグ3とを有し、前記コーン部1a
及びシート部2の内周面に耐磨耗材4がライニングされ
ており、前記プラグ3を流路1の軸心方向に沿って移動
させて該プラグ3とシート部2との間の間隔を調整する
ことにより、流路1を通過する高温流体の流量及び圧力
をコントロールするようになっている。
2. Description of the Related Art FIG. 3 shows an example of a plug valve of this type. This is the cone 1 of the flow path 1
a) a circular sheet portion 2 concentrically welded to a.
A wear-resistant material 4 is lined on the inner peripheral surface of the seat portion 2, and the distance between the plug 3 and the seat portion 2 is adjusted by moving the plug 3 along the axial direction of the flow path 1. By doing so, the flow rate and pressure of the high temperature fluid passing through the flow path 1 are controlled.

【0003】上記構成によれば、シート部2の耐磨耗材
4の特定の限られた部分が高温流体に含まれる化学触媒
などの粉流体によりエロージョンを受けやすく、このよ
うにエロージョンを受けた場合には、溶接aをはつり、
これにより、コーン部1aから取り外したシート部2の
耐磨耗材4を補修し、再び、そのシート部2をコーン部
1aに溶接aすることが行われている。
According to the above configuration, a specific limited portion of the abrasion-resistant material 4 of the seat portion 2 is susceptible to erosion by a powder fluid such as a chemical catalyst contained in a high-temperature fluid. The welding a
Thus, the wear-resistant material 4 of the sheet portion 2 removed from the cone portion 1a is repaired, and the sheet portion 2 is again welded to the cone portion 1a.

【0004】[0004]

【発明が解決しようとする課題】上記従来の構成では、
シート部2の耐磨耗材4が部分的にエロージョンされた
場合でも、シート部2の全体をコーン部1aから取り外
す必要があるため、現地での補修が困難であり、手間と
時間とがかかり、耐磨耗材4の健全部まで再施工とな
り、製作費が高くつく。
In the above-mentioned conventional configuration,
Even when the wear-resistant material 4 of the seat portion 2 is partially eroded, it is necessary to remove the entire seat portion 2 from the cone portion 1a, so that repair on site is difficult, and it takes time and effort, Reconstruction is performed up to the sound portion of the wear-resistant material 4, and the production cost is high.

【0005】本発明は、上記問題点に鑑み、補修を現場
で迅速容易に行うことができ、製作費を安くすることが
できるプラグバルブを提供することを目的としている。
[0005] In view of the above problems, an object of the present invention is to provide a plug valve capable of performing repairs quickly and easily on site and reducing manufacturing costs.

【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、請求項1記載の発明は、流路に環状シート部が同心
状に設けられ、該シート部に対してプラグが嵌脱可能に
設けられたプラグバルブにおいて、前記シート部は、流
路に固着した環状シート部本体と、該シート部本体の内
周面に形成した環状凹部に分離可能に嵌め込んだ内側シ
ート部とからなることを特徴としている。
In order to achieve the above object, according to the first aspect of the present invention, an annular sheet portion is provided concentrically in a flow path, and a plug is provided in the sheet portion so as to be able to be fitted and removed. In the plug valve, the seat portion includes an annular seat portion main body fixed to the flow path and an inner seat portion separably fitted in an annular recess formed on an inner peripheral surface of the seat portion main body. Features.

【0007】上記構成において、内側シート部がエロー
ジョンを受けた場合には、環状凹部から内側シート部を
取り外し、エロージョンを受けた部分を補修し、再び、
その補修した内側シート部を前記環状凹部内に嵌め込め
ばよい。
In the above structure, when the inner sheet portion is eroded, the inner sheet portion is removed from the annular concave portion, and the eroded portion is repaired.
The repaired inner sheet portion may be fitted into the annular concave portion.

【0008】この場合、流路に固着した環状シート部本
体を取り外すことなく、エロージョンを受けた内側シー
ト部だけを取り外してその補修を現場で迅速容易に行う
ことができ、製作費を安くすることができる。
In this case, without removing the annular sheet portion main body fixed to the flow path, only the eroded inner sheet portion can be removed and repaired quickly and easily on site, thereby reducing the manufacturing cost. Can be.

【0009】請求項2記載の発明は、前記内側シート部
が流路の軸心方向に沿って所定間隔をおいて複数に分割
され、該各分割シート部のうち、下流端の分割シート部
が前記シート部本体に止着され、上流側の分割シート部
が前記下流端の分割シート部と環状凹部の上流側端面と
により挟持されていることを特徴としている。
According to a second aspect of the present invention, the inner sheet portion is divided into a plurality of portions at predetermined intervals along the axial direction of the flow path, and the divided sheet portion at the downstream end among the divided sheet portions is It is fixed to the seat body, and the upstream split seat is sandwiched between the downstream split seat and the upstream end face of the annular recess.

【0010】上記構成によれば、内側シート部が複数に
分割されているので、エロージョンを受けた分割シート
部だけを補修すればよく、その補修作業を一層迅速容易
に行うことができる。また、下流端の分割シート部をシ
ート部本体に止着するだけで、上流側の分割シート部も
環状凹部内に簡単に嵌め込むことができ、しかも、前記
止着を解除するだけで、各分割シート部を環状凹部から
簡単に取り外すことができる。
According to the above configuration, since the inner sheet portion is divided into a plurality of portions, only the eroded divided sheet portion needs to be repaired, and the repair work can be performed more quickly and easily. Also, by merely fixing the divided sheet portion at the downstream end to the sheet portion main body, the divided sheet portion on the upstream side can be easily fitted into the annular concave portion. The split sheet portion can be easily removed from the annular concave portion.

【0011】[0011]

【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図1及び図2は本発明の実施の一
形態であるプラグバルブを示すものであって、シート部
2がコーン部1aに溶接aした環状シート部本体2Aを
有し、該シート部本体2Aの内周面のエロージョンを受
けやすい中央部から下流端にかけて環状凹部8が形成さ
れ、該環状凹部8に内側シート部2Bが分離可能に嵌入
され、該内側シート部2Bが流路1の軸心方向に沿って
所定間隔をおいて複数(この実施の形態では2つ)の分
割シート部2a,2bに分割されている。
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a plug valve according to an embodiment of the present invention, in which a seat portion 2 has an annular seat portion main body 2A welded to a cone portion 1a, and the seat portion main body 2A An annular recess 8 is formed from the central portion of the inner peripheral surface, which is susceptible to erosion, to the downstream end, and the inner sheet portion 2B is separably fitted into the annular recess 8, and the inner sheet portion 2B is oriented in the axial direction of the flow path 1. Are divided into a plurality (two in this embodiment) of divided sheet portions 2a and 2b at a predetermined interval along.

【0012】前記下流端の分割シート部2bは、該分割
シート部2bの貫通孔9を通ってシート部本体2Aのね
じ孔10にねじ込んだボルト11によりシート部本体2
Aの下面に分離可能に取り付けられている。
The divided sheet portion 2b at the downstream end is passed through the through hole 9 of the divided sheet portion 2b and is screwed into a screw hole 10 of the sheet portion main body 2A by a bolt 11 which is screwed.
A is detachably attached to the lower surface of A.

【0013】前記上流側の分割シート部2aは、下流端
の分割シート部2bと環状凹部8の上流側端面8aとに
より挟持されてシート部本体2Aに分離可能に取り付け
られている。
The upstream divided sheet portion 2a is sandwiched between the downstream divided sheet portion 2b and the upstream end surface 8a of the annular concave portion 8 and is detachably attached to the sheet portion main body 2A.

【0014】上記構成において、各分割シート部2a,
2bの耐磨耗材4がエロージョンを受けた場合には、プ
ラグ3をシート部2から離間させた状態で、図2に示す
ように、ボルト11のねじ込みを解除して、該各分割シ
ート部2a,2bを環状凹部8から取り外し、そのエロ
ージョンを受けた部分を補修し、再び、その補修した分
割シート部2a,2bを環状凹部8内に嵌め込み、ボル
ト11により下流端の分割シート部2bをシート部本体
2Aに止着すればよい。
In the above configuration, each of the divided sheet portions 2a,
When the abrasion resistant material 4b is eroded, the bolts 11 are unscrewed with the plug 3 separated from the seat portion 2 as shown in FIG. , 2b are removed from the annular concave portion 8, the eroded portion is repaired, the repaired divided sheet portions 2a, 2b are fitted into the annular concave portion 8 again, and the downstream divided sheet portion 2b is seated by the bolt 11. What is necessary is just to fasten to the part main body 2A.

【0015】この場合、流路1に固着した環状シート部
本体2Aを取り外すことなく、エロージョンを受けた内
側シート部2Bだけを取り外してその補修を現場で迅速
容易に行うことができ、製作費を安くすることができ
る。
In this case, without removing the annular sheet portion main body 2A fixed to the flow path 1, only the eroded inner sheet portion 2B can be removed and the repair thereof can be performed quickly and easily on site, thereby reducing the manufacturing cost. Can be cheaper.

【0016】また、内側シート部2Bが複数に分割され
ているので、エロージョンを受けた分割シート部2a,
2bだけを補修すればよく、その補修作業を一層迅速容
易に行うことができる。また、下流端の分割シート部2
bをシート部本体2Aに止着するだけで、各分割シート
部2a,2bを環状凹部8内に簡単に嵌め込むことがで
き、しかも、ボルト11のねじ込みを解除するだけで、
各分割シート部2a,2bを環状凹部8から簡単に取り
外すことができる。
Further, since the inner sheet portion 2B is divided into a plurality of portions, the divided sheet portions 2a,
It is sufficient to repair only 2b, and the repair work can be performed more quickly and easily. Also, the divided sheet portion 2 at the downstream end
b can be easily fitted into the annular concave portion 8 simply by fastening the seat member 2b to the seat portion main body 2A.
Each of the divided sheet portions 2a and 2b can be easily removed from the annular concave portion 8.

【0017】[0017]

【発明の効果】請求項1記載の発明によれば、流路に固
着した環状シート部本体を取り外すことなく、エロージ
ョンを受けた内側シート部だけを取り外してその補修を
現場で迅速容易に行うことができ、製作費を安くするこ
とができる。
According to the first aspect of the present invention, it is possible to quickly and easily repair the eroded inner sheet portion on site without removing the annular sheet portion main body fixed to the flow path. And the production cost can be reduced.

【0018】請求項2記載の発明によれば、内側シート
部が複数に分割されているので、エロージョンを受けた
分割シート部だけを補修すればよく、その補修作業を一
層迅速容易に行うことができる。また、下流端の分割シ
ート部をシート部本体に止着するだけで、上流側の分割
シート部も環状凹部内に簡単に取り付けることができ、
しかも、前記止着を解除するだけで、各分割シート部を
環状凹部から簡単に取り外すことができる。
According to the second aspect of the present invention, since the inner sheet portion is divided into a plurality of portions, only the divided sheet portion subjected to erosion needs to be repaired, and the repair work can be performed more quickly and easily. it can. Also, by simply fixing the downstream divided sheet portion to the sheet portion main body, the upstream divided sheet portion can also be easily installed in the annular concave portion,
Moreover, each split sheet portion can be easily removed from the annular recess only by releasing the fastening.

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

【図1】本発明の実施の一形態であるプラグバルブの縦
断面図である。
FIG. 1 is a longitudinal sectional view of a plug valve according to an embodiment of the present invention.

【図2】同分解斜視図である。FIG. 2 is an exploded perspective view of the same.

【図3】従来例を示す縦断面図である。FIG. 3 is a longitudinal sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1 流路 2 環状シート部 2A 環状シート部本体 2B 内側シート部 2a 上流側の分割シート部 2b 下流端の分割シート部 3 プラグ 8 環状凹部 8a 環状凹部の上流側端面 11 ボルト DESCRIPTION OF SYMBOLS 1 Flow path 2 Annular seat part 2A Annular seat part main body 2B Inner seat part 2a Upstream split seat part 2b Downstream split seat part 3 Plug 8 Annular recess 8a Upstream end face of annular recess 11 Bolt

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 流路に環状シート部が同心状に設けら
れ、該シート部に対してプラグが嵌脱可能に設けられた
プラグバルブにおいて、前記シート部は、流路に固着し
た環状シート部本体と、該シート部本体の内周面に形成
した環状凹部に分離可能に嵌め込んだ内側シート部とか
らなることを特徴とするプラグバルブ。
1. A plug valve in which an annular seat portion is provided concentrically in a flow path, and a plug is fitted to and detachable from the seat portion, wherein the seat portion is an annular seat portion fixed to the flow path. A plug valve comprising: a main body; and an inner seat portion detachably fitted into an annular recess formed in an inner peripheral surface of the seat portion main body.
【請求項2】 前記内側シート部は流路の軸心方向に沿
って所定間隔をおいて複数に分割され、該各分割シート
部のうち、下流端の分割シート部が前記シート部本体に
止着され、上流側の分割シート部が前記下流端の分割シ
ート部と環状凹部の上流側端面とにより挟持されている
ことを特徴とする請求項1記載のプラグバルブ。
2. The inner sheet portion is divided into a plurality of portions at predetermined intervals along the axial direction of the flow path, and the divided sheet portion at the downstream end of each divided sheet portion is fixed to the sheet portion main body. 2. The plug valve according to claim 1, wherein the upstream divided seat portion is clamped by the downstream divided seat portion and the upstream end surface of the annular concave portion.
JP8182885A 1996-07-12 1996-07-12 Plug valve Pending JPH1026238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8182885A JPH1026238A (en) 1996-07-12 1996-07-12 Plug valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8182885A JPH1026238A (en) 1996-07-12 1996-07-12 Plug valve

Publications (1)

Publication Number Publication Date
JPH1026238A true JPH1026238A (en) 1998-01-27

Family

ID=16126117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8182885A Pending JPH1026238A (en) 1996-07-12 1996-07-12 Plug valve

Country Status (1)

Country Link
JP (1) JPH1026238A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013537960A (en) * 2010-09-08 2013-10-07 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Valve for controlling fluid
WO2021146285A1 (en) * 2020-01-13 2021-07-22 Schlumberger Technology Corporation Choke valve assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013537960A (en) * 2010-09-08 2013-10-07 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング Valve for controlling fluid
WO2021146285A1 (en) * 2020-01-13 2021-07-22 Schlumberger Technology Corporation Choke valve assembly

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