JPH0141976Y2 - - Google Patents
Info
- Publication number
- JPH0141976Y2 JPH0141976Y2 JP1984121867U JP12186784U JPH0141976Y2 JP H0141976 Y2 JPH0141976 Y2 JP H0141976Y2 JP 1984121867 U JP1984121867 U JP 1984121867U JP 12186784 U JP12186784 U JP 12186784U JP H0141976 Y2 JPH0141976 Y2 JP H0141976Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- seat
- control
- fluid
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 description 12
- 230000003628 erosive effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008439 repair process Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Control Of Turbines (AREA)
- Lift Valve (AREA)
Description
【考案の詳細な説明】
ａ 産業上の利用分野
本考案は、開弁の際、一次側より二次側へ高差
圧をもつて流体が噴出する制御弁の弁座装置に関
するものである。[Detailed Description of the Invention] a. Field of Industrial Application The present invention relates to a valve seat device for a control valve in which fluid is ejected from the primary side to the secondary side with a high differential pressure when the valve is opened.
ｂ 従来の技術
ボイラ−、高圧ヒ−タなどの流路系に設置し
て、それらの飽和水を高差圧で排出する所謂、高
差圧制御弁は、往々にしてそのシ−ト部および絞
り部にエロ−ジヨンが発生し、修理を頻繁に行な
わなければならなかつた。b. Prior Art A so-called high differential pressure control valve that is installed in a flow path system of a boiler, high pressure heater, etc. and discharges the saturated water at a high differential pressure often has its seat portion and Erosion occurred in the constriction section, necessitating frequent repairs.
従来のものはシ−ト部に続いて制御部があり、
流体はその制御部で絞り制御を与えられ排出する
が、その際流速が急激に高まり、減圧効果が起
り、高差圧排出となる。それにより飽和水の急激
な気化作用が始まり、キヤビテ−シヨンが発生し
て、弁体制御部と、それに連なるシ−ト部にエロ
−ジヨンが起る。このため、シ−ト部の閉鎖気密
能力の抵下と、流量制御の乱れが生じ、バルブと
してダメ−ジを受け、頻繁な補修が必要となる支
障を有していた。 Conventional models have a control section following the seat section.
The fluid is discharged under throttling control in the control section, but at this time the flow velocity increases rapidly, a pressure reduction effect occurs, and a high differential pressure is discharged. As a result, rapid vaporization of saturated water begins, cavitation occurs, and erosion occurs in the valve body control section and the seat section connected thereto. As a result, the sealing ability of the seat portion is compromised and the flow rate control is disturbed, resulting in damage to the valve and the need for frequent repairs.
ｃ 考案の目的
そこで本考案の目的としては、かゝる高差圧制
御弁の弁座として、シ−ト部と制御部とを引き離
し、その中間にポケツト部を形成すると共に、前
記制御部出口容積を急激に拡大することにより、
制御弁の作動時に発生する高差圧流体による浸
蝕、振動および騒音を防ぐ弁座部とすることにあ
る。c. Purpose of the invention Therefore, the purpose of the present invention is to separate the seat part and the control part, form a pocket part in the middle, and use the valve seat of the control part as the valve seat of such a high differential pressure control valve. By rapidly expanding the volume,
The objective is to provide a valve seat that prevents erosion, vibration, and noise caused by high differential pressure fluid that occurs when the control valve is operated.
ｄ 考案の構成
本案の構成を図面によつて説明すると、まず従
来例として挙げた第３図の弁座部では、弁杆５の
開閉作動に従つて一次側１ａより二次側１ｂへの
噴出流体の流速が急激に高まり減圧効果が発生す
る。そのため飽和水の急激な気化作用が始まり、
キヤビテ−シヨンが発生して弁体、弁座のシ−ト
部、制御部にエロ−ジヨンが起り、弁杆５を振動
させて騒音を発生する。d Structure of the invention The structure of the invention will be explained with reference to drawings. First, in the valve seat part shown in FIG. The fluid flow rate increases rapidly and a decompression effect occurs. As a result, rapid evaporation of saturated water begins,
Cavitation occurs and erosion occurs in the valve body, the seat portion of the valve seat, and the control portion, causing the valve rod 5 to vibrate and generate noise.
第１図と第２図では、本考案を示すもので、特
に要部を拡大して図示した第２図で良く見られる
とおり、弁座４のシ−ト部４ａと制御部４ｂとを
分離し、その間にポケツト部６を形成した上、前
記制御部４ｂの出口を二次側１ｂに対し急激に拡
大すると共に、シ−ト部４ａの流体通過面積は、
制御部４ｂのそれより大きく、またポケツト部６
の流体通過面積は、シ−ト部４ａの面積より大と
している。 Figures 1 and 2 show the present invention, and as can be seen particularly in Figure 2, which shows the main parts enlarged, the seat part 4a of the valve seat 4 and the control part 4b are separated. However, in addition to forming the pocket portion 6 between them, the outlet of the control portion 4b is rapidly expanded with respect to the secondary side 1b, and the fluid passage area of the seat portion 4a is as follows.
It is larger than that of the control section 4b, and the pocket section 6 is larger than that of the control section 4b.
The fluid passage area is larger than the area of the seat portion 4a.
燃して弁杆５が開弁方向に移動してシ−ト部４
ａが開口すると、一次側１ａの高圧流体はシ−ト
部４ａ、ポケツト部６、制御部４ｂまでは液体状
で通過し、制御部４ｂで減圧した直後に気化と膨
張があつても、制御部４ｂの出口側は、二次側１
ｂにおいて急激に拡大されているため、渦流やキ
ヤビテ−シヨンは発生しないで、弁の制御を行い
得る構成である。 The valve rod 5 moves in the valve opening direction and the seat part 4
When a is opened, the high-pressure fluid on the primary side 1a passes through the seat section 4a, the pocket section 6, and the control section 4b in a liquid state, and even if it vaporizes and expands immediately after being depressurized at the control section 4b, the high-pressure fluid is not controlled. The outlet side of the section 4b is the secondary side 1
Since it is rapidly expanded at point (b), the configuration is such that the valve can be controlled without generating vortices or cavitation.
ｅ 考案の効果
本考案においては弁座４のシ−ト部４ａと制御
部４ｂとを引き離してその間にポケツト部６で容
積を拡大し、シ−ト部４ａとポケツト部６は制御
部４ｂの面積より大きくし、さらに制御部４ｂの
出口を急激に拡大している構成のため、開弁の際
に一次側より高差圧の流体がシ−ト部４ａを通過
しても、シ−ト部４ａより拡大容積のポケツト部
６に入り、容積の拡大と流速の緩和によつて、弁
杆５先端部５ａへの流体の衝撃力を弱め、延いて
この部分に対するエロ−ジヨンを防止するほか、
前記ポケツト部６の形成により、高差圧流体がシ
−ト部４ａを通過しても、渦流やキヤビテ−シヨ
ンは発生しないので、振動も起らず騒音も抵下
し、バルブの作業性と耐久性を高める等の実用的
効果がある。e Effect of the invention In the present invention, the seat part 4a and the control part 4b of the valve seat 4 are separated and the volume is expanded by the pocket part 6 between them. The area is larger than that of the seat part 4a, and the outlet of the control part 4b is rapidly enlarged, so even if fluid with a high differential pressure from the primary side passes through the seat part 4a when the valve is opened, the seat The fluid enters the enlarged volume pocket part 6 from the part 4a, and by expanding the volume and relaxing the flow velocity, it weakens the impact force of the fluid on the tip part 5a of the valve rod 5, and prevents erosion against this part. ,
Due to the formation of the pocket portion 6, even if high differential pressure fluid passes through the seat portion 4a, no vortex or cavitation occurs, so no vibration occurs and noise is reduced, improving the workability of the valve. It has practical effects such as increasing durability.
図面第１図は本案制御弁の要部縦断側面図、第
２図は同弁座部分を縦断した拡大側面図、第３図
は従来型を示す同部分の側面図である。
符号の説明、１……弁体、２……ボンネツト、
３……ヨ−ク、４……弁座、５……弁杆、６……
ポケツト部。
FIG. 1 is a longitudinal sectional side view of the main part of the control valve of the present invention, FIG. 2 is an enlarged longitudinal sectional side view of the valve seat portion, and FIG. 3 is a side view of the same portion showing a conventional type. Explanation of symbols, 1...Valve body, 2...Bonnet,
3... Yoke, 4... Valve seat, 5... Valve lever, 6...
Pocket part.
Claims (1)
その間にポケツト部６を刑成し、前記シ−ト部４
ａとポケツト部６は制御部４ｂの面積より大きく
すると共に、該制御部４ｂの出口を二次側に向け
急激に拡大せしめる構成とした高差圧制御弁の弁
座装置。 Separate the seat portion 4a of the valve seat 4 and the control portion 4b,
In the meantime, the pocket part 6 is formed, and the seat part 4 is formed.
A valve seat device for a high differential pressure control valve, in which the area of the pocket portion 6a and the pocket portion 6 is larger than that of the control portion 4b, and the outlet of the control portion 4b is rapidly expanded toward the secondary side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12186784U JPS6136764U (en) | 1984-08-10 | 1984-08-10 | Valve seat device for high differential pressure control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12186784U JPS6136764U (en) | 1984-08-10 | 1984-08-10 | Valve seat device for high differential pressure control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6136764U JPS6136764U (en) | 1986-03-07 |
| JPH0141976Y2 true JPH0141976Y2 (en) | 1989-12-11 |
Family
ID=30680642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12186784U Granted JPS6136764U (en) | 1984-08-10 | 1984-08-10 | Valve seat device for high differential pressure control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6136764U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150316154A1 (en) * | 2012-12-21 | 2015-11-05 | Eagle Industry Co., Ltd. | Valve structure |
| CN104110522B (en) * | 2014-07-04 | 2017-02-08 | 珠海格力电器股份有限公司 | Throttling structure and pressure drop device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156223A (en) * | 1978-05-31 | 1979-12-10 | Maenakaseisakushiyo Kk | Starter valve |
-
1984
- 1984-08-10 JP JP12186784U patent/JPS6136764U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54156223A (en) * | 1978-05-31 | 1979-12-10 | Maenakaseisakushiyo Kk | Starter valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6136764U (en) | 1986-03-07 |
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