JPH01182678A - Control valve with sticking matter eliminating device - Google Patents
Control valve with sticking matter eliminating deviceInfo
- Publication number
- JPH01182678A JPH01182678A JP630088A JP630088A JPH01182678A JP H01182678 A JPH01182678 A JP H01182678A JP 630088 A JP630088 A JP 630088A JP 630088 A JP630088 A JP 630088A JP H01182678 A JPH01182678 A JP H01182678A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- slit
- valve
- control valve
- valve seat
- 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
Links
- 238000007790 scraping Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 206010011878 Deafness Diseases 0.000 description 1
- LFYJSSARVMHQJB-QIXNEVBVSA-N bakuchiol Chemical compound CC(C)=CCC[C@@](C)(C=C)\C=C\C1=CC=C(O)C=C1 LFYJSSARVMHQJB-QIXNEVBVSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はたとえば発電プラントの給水加熱器のドレンの
流量を調節する付着物除去機構付調節弁に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a control valve with a deposit removal mechanism for regulating the flow rate of a drain of a feedwater heater of a power generation plant, for example.
従来この種の付着物除去機構付調節弁として特開昭６２
−１３２０７９号公報、特開昭５９−１５５６７５号公
報が知られている。Conventionally, this type of control valve with a deposit removal mechanism was developed in Japanese Patent Application Laid-Open No. 62
-132079 and JP-A-59-155675 are known.
第４図、第５図は従来構造例を示し、弁本体ｌ内にプラ
グ２を上下往復動可能に設け、弁本体１内に弁座３を固
設し、弁本体１のプラグ２側面側に流入口４を形成する
とともにプラグ２端節側に流出口５を形成し、プラグ２
のｌａ部にプラグ２端面からプラグ着座部６側に延びる
スリット７を複数条設け、かつプラグガイド８にスクレ
ーバリング９を固定し、しかして図外の外部操作機構に
よりプラグ２を上下動し、弁座３との間でスリット７の
開口面積を増減することにより通過流量を制御可能に設
けるとともにプラグ着座Ｆ！ｉＳ６と弁座部ｍとにより
弁閉可能に設け、かつスクレーバリング９によりプラグ
３上昇時、プラグ２外周面に付着した酸化スケール等の
付着物Ｗをはぎとり弁開閉動作を良好にし得るように構
成されている。4 and 5 show examples of conventional structures, in which a plug 2 is provided in the valve body 1 so as to be able to move up and down, a valve seat 3 is fixedly provided in the valve body 1, and the side surface of the plug 2 of the valve body 1 is An inlet 4 is formed at the end of the plug 2, and an outlet 5 is formed at the end of the plug 2.
A plurality of slits 7 extending from the end face of the plug 2 toward the plug seating portion 6 are provided in the la portion of the plug, and a scraper ring 9 is fixed to the plug guide 8, and the plug 2 is moved up and down by an external operating mechanism (not shown). , the passage flow rate can be controlled by increasing or decreasing the opening area of the slit 7 between the valve seat 3 and the plug seat F! The iS6 and the valve seat part m are provided so that the valve can be closed, and the scraper ring 9 is used to scrape off deposits W such as oxide scale attached to the outer peripheral surface of the plug 2 when the plug 3 is raised, thereby improving the valve opening and closing operation. It is configured.
しかしながら上記調節弁において弁本体１のプラグ２端
而側を流入口４とするとともにプラグ２側面側を流出口
５として用いる場合付着物Ｗはプラグ２外周面よりもプ
ラグ２端部側、ことにスリット７内面に付着堆積し、こ
の付着物Ｗを除去できずに流路の閉塞が進行し、流量制
御に支障をきたすという不都合を有している。However, in the above control valve, when the end side of the plug 2 of the valve body 1 is used as the inlet 4 and the side surface side of the plug 2 is used as the outlet 5, the deposit W is located closer to the end of the plug 2 than the outer peripheral surface of the plug 2. This has the disadvantage that the deposits W accumulate on the inner surface of the slit 7 and cannot be removed, leading to further blockage of the flow path and impeding flow rate control.
本発明はこれらの不都合を解消することを特徴とするも
ので、その要旨は、弁本体内にプラグを往復動可能に設
けるとともに弁本体内に弁座を固設し、弁本体のプラグ
端部側に流入口を形成するとともにプラグ側面側に流出
口を形成し、プラグの端部にプラグ端面からプラグ着座
部側に延びるスリットを複数条設けてなる調節弁におい
て、上記弁座の内側に上記スリット内に対応させて掻落
凸部を設けて構成したことを特徴とする付着物除去機構
付調節弁にある。The present invention is characterized by solving these inconveniences, and its gist is that a plug is provided within the valve body so as to be movable back and forth, and a valve seat is fixed within the valve body, so that the end of the plug of the valve body A control valve having an inlet on the side thereof, an outlet on the side of the plug, and a plurality of slits at the end of the plug extending from the end face of the plug to the side of the plug seat, wherein There is provided a control valve with a deposit removal mechanism, characterized in that a scraping convex portion is provided corresponding to the inside of the slit.
掻落凸部はスリット内に位置しているためプラグ往復動
時にスリット内面の付着物を掻き落とす作用をなす。Since the scraping convex portion is located within the slit, it serves to scrape off deposits on the inner surface of the slit when the plug reciprocates.
第１図乃至第３図は本発明の実施例を示している。 1 to 3 show embodiments of the invention.
尚、萌記第４．５図の従来構造と同−聾様部分には同符
号を付して説明する。Note that the same reference numerals are given to the same deaf-like parts as those in the conventional structure shown in FIG. 4.5 of Moe's description.
１１は掻落凸部であって、弁座３の内側ｎに複数個、こ
の場合４個一体的に突出形成され、前記４個のスリット
７内に位置している。Reference numeral 11 designates scraping convex portions, which are formed in plural pieces, in this case four pieces integrally, protruding from the inner side n of the valve seat 3, and are located within the four slits 7.
この実施例は上記構成であるから、プラグ２の往復動に
よりスリット７内面の付着物Ｗを掻落凸部１０により掻
落とずことができ、弁の耐久性を向上できる。Since this embodiment has the above-mentioned configuration, the deposits W on the inner surface of the slit 7 can be scraped off by the scraping convex portion 10 due to the reciprocating movement of the plug 2, and the durability of the valve can be improved.
尚、上記実施例の掻落凸部１１はプラグ２の形状に応じ
て設計変更されるであろう。Note that the design of the scraping convex portion 11 in the above embodiment may be changed depending on the shape of the plug 2.
本発明は上述の如く、プラグの往復動によりスリット内
面の付着物を掻落凸部により掻落とすことができ、弁の
耐久性を向上できる。As described above, according to the present invention, deposits on the inner surface of the slit can be scraped off by the scraping convex portion by the reciprocating movement of the plug, thereby improving the durability of the valve.
以上、所期の目的を充分達成することができる。As described above, the intended purpose can be fully achieved.
図面は本発明の一実施例を示すもので、第１図は断面図
、第２図はその部分平断面図、第３図はその分解斜視図
、第４図は従来構造の断面図、第５図はその平断面図で
ある。
ｌ・・・弁本体、２・・・プラグ、３・・・弁座、４・
・・流入口、５・・・流出口、６・・・プラグ着座部、
７・・・スリット、１１・・・掻落凸部、ｎ・・・内側
。
昭和６３年１月１４日
出願人 二イガタ・メーソンネーラン株式会社発明
者 千 葉 二 部
同 佐 藤 孝 大同
薄 １） 光 雄］ｂ使
ズ１
さ幻夕
富グーThe drawings show one embodiment of the present invention; FIG. 1 is a sectional view, FIG. 2 is a partial plan sectional view thereof, FIG. 3 is an exploded perspective view thereof, FIG. 4 is a sectional view of a conventional structure, and FIG. FIG. 5 is a plan sectional view thereof. l... Valve body, 2... Plug, 3... Valve seat, 4...
...Inflow port, 5...Outflow port, 6...Plug seating part,
7...Slit, 11...Scraping convex portion, n...Inside. January 14, 1988 Applicant Niigata Mason Neeran Co., Ltd. Inventor Chiba Second Department Takashi Sato Daido
Usui 1) Hikaru Yu] b envoy 1 Sagen Yutomi Gu
Claims (1)
内に弁座を固設し、弁本体のプラグ端部側に流入口を形
成するとともにプラグ側面側に流出口を形成し、プラグ
の端部にプラグ端面からプラグ着座部側に延びるスリッ
トを複数条設けてなる調節弁において、上記弁座の内側
に上記スリット内に対応させて掻落凸部を設けて構成し
たことを特徴とする付着物除去機構付調節弁。A plug is provided within the valve body so as to be able to reciprocate, and a valve seat is fixed within the valve body. An inlet is formed on the end of the plug of the valve body, an outlet is formed on the side of the plug, and the end of the plug is A control valve having a plurality of slits extending from a plug end face toward a plug seating part, characterized in that a scraping convex part is provided inside the valve seat to correspond to the inside of the slit. Control valve with removal mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP630088A JPH01182678A (en) | 1988-01-13 | 1988-01-13 | Control valve with sticking matter eliminating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP630088A JPH01182678A (en) | 1988-01-13 | 1988-01-13 | Control valve with sticking matter eliminating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01182678A true JPH01182678A (en) | 1989-07-20 |
Family
ID=11634525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP630088A Pending JPH01182678A (en) | 1988-01-13 | 1988-01-13 | Control valve with sticking matter eliminating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01182678A (en) |
-
1988
- 1988-01-13 JP JP630088A patent/JPH01182678A/en active Pending
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