JPH0334560Y2 - - Google Patents
Info
- Publication number
- JPH0334560Y2 JPH0334560Y2 JP1984024535U JP2453584U JPH0334560Y2 JP H0334560 Y2 JPH0334560 Y2 JP H0334560Y2 JP 1984024535 U JP1984024535 U JP 1984024535U JP 2453584 U JP2453584 U JP 2453584U JP H0334560 Y2 JPH0334560 Y2 JP H0334560Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- float
- pipe
- cylindrical body
- piping
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000002265 prevention Effects 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Pipeline Systems (AREA)
- Pipe Accessories (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、配管に設けたバルブの水撃防止装
置に関するものである。[Detailed description of the invention] (Field of industrial application) This invention relates to a water hammer prevention device for a valve provided in a pipe.
（従来の技術）
流体配管内にエヤーを供給して水撃防止をする
装置には、エヤーボンベやエヤー供給装置を用い
て、その都度配管にエヤーを供給するようにして
いるものがある（実公昭47−43073号参照）。(Prior art) Some devices that prevent water hammer by supplying air into fluid piping use an air cylinder or an air supply device to supply air to the piping each time. 47-43073).
（考案が解決しようとする問題点）
第１図のように、バルブ２の下流は長い配管
で、この配管１内に矢印のように送水している場
合、バルブ２を急閉止すると送水流は慣性によつ
て水流を継続し、バルブ２の下流部側が負圧とな
る。そして水流は配管１の終端のノズル（図示し
てない）において反射して配管１内を逆流し、大
きな水撃となつてバルブ２を破損する。(Problem to be solved by the invention) As shown in Figure 1, there is a long pipe downstream of valve 2, and if water is being fed into this pipe 1 as shown by the arrow, when valve 2 is suddenly closed, the water flow will be reduced. The water flow continues due to inertia, and the downstream side of the valve 2 becomes negative pressure. The water flow is then reflected at a nozzle (not shown) at the end of the pipe 1 and flows backward through the pipe 1, creating a large water hammer and damaging the valve 2.
この考案は、このような配管に設けたバルブを
水撃による破損から防止すること目的にして完成
させた装置である。 This invention is a device completed with the purpose of preventing valves installed in such piping from being damaged by water hammer.
（問題点を解決するための手段） この考案を実施例の図面によつて説明する。(Means for solving problems) This invention will be explained with reference to drawings of embodiments.
すなわち、配管に設けたバルブ２の下流側の配
管１に、このバルブ２に近接して設ける装置であ
つて、この装置４は筒体７と、この筒体７の下部
に連結する弁室１４を有し、筒体７の上端は外気
に開口し、弁室１４の下部は配管１に連結し、筒
体７内にはフロート１１を、そのフロート１１の
下部には弁体１３ａをそれぞれ設け、弁体１３ａ
は弁室１４において逆止弁１３を構成し、フロー
ト１１の沈下位置において逆止弁１３を開くよう
にするバルブ２の水撃防止装置である。 That is, it is a device installed in the piping 1 on the downstream side of the valve 2 provided in the piping, close to this valve 2, and this device 4 includes a cylindrical body 7 and a valve chamber 14 connected to the lower part of the cylindrical body 7. The upper end of the cylindrical body 7 is open to the outside air, the lower part of the valve chamber 14 is connected to the pipe 1, a float 11 is provided inside the cylindrical body 7, and a valve body 13a is provided at the lower part of the float 11. , valve body 13a
is a water hammer prevention device for the valve 2, which constitutes a check valve 13 in the valve chamber 14 and opens the check valve 13 when the float 11 is in the lowered position.
そして実施例では、この装置４はメンテナンス
バルブ３を介して分岐管１ａによつて配管１に連
結されている。 In the embodiment, this device 4 is connected to the pipe 1 via a maintenance valve 3 and a branch pipe 1a.
筒体７の上端は開口部５で開口し、その上部に
は開口部５の通気に支障のない覆い６を設けてあ
る。筒体７には中筒８を設け、フロート１１はこ
の中筒８内を上下可動に設けてある。中筒８には
底９を有し、さらに中筒８の底９や壁には要
所々々に***１０をあけてある。フロート１１の
下部には棒１２を突設し、この棒１２は中筒８の
底９を摺動可能に貫通し、棒１２の下端に前記弁
体１３ａを設けてある。また弁室１４には弁体１
３ａの下方に位置して緩衝板１５が設けてあつ
て、この緩衝板１５の外周は支持部材１７で弁室
１４に支持されている。また緩衝板１５の中央に
は***１６があけてある。弁室１４の下端取り付
け口１８は、前記メンテナンスバルブ３を経て配
管１に連結されている。メンテナンスバルブ３は
常時開いている。 The upper end of the cylindrical body 7 is opened with an opening 5, and a cover 6 is provided on the upper end of the cylindrical body 7, which does not hinder the ventilation of the opening 5. The cylinder body 7 is provided with a middle cylinder 8, and the float 11 is provided in the middle cylinder 8 so as to be movable up and down. The middle cylinder 8 has a bottom 9, and small holes 10 are made at various important points in the bottom 9 and the wall of the middle cylinder 8. A rod 12 is protruded from the lower part of the float 11, and this rod 12 slidably penetrates the bottom 9 of the middle cylinder 8, and the valve body 13a is provided at the lower end of the rod 12. In addition, the valve chamber 14 has a valve body 1.
A buffer plate 15 is provided below the valve 3a, and the outer periphery of the buffer plate 15 is supported in the valve chamber 14 by a support member 17. Further, a small hole 16 is made in the center of the buffer plate 15. A lower end attachment port 18 of the valve chamber 14 is connected to the pipe 1 via the maintenance valve 3. The maintenance valve 3 is always open.
（作用）
この装置４を第１図のように取り付けた配管１
において、バルブ２を開き配管１に矢印方向に送
水すると、配管１内の水は分岐管１ａ、バルブ３
を経て装置４内に侵入する。それによつてフロー
ト１１は浮き、弁体１３ａが弁座１３ｂを閉止す
る。それによつて水は装置４外に溢出しない。(Function) Piping 1 with this device 4 installed as shown in Figure 1
When the valve 2 is opened and water is sent to the pipe 1 in the direction of the arrow, the water in the pipe 1 flows through the branch pipe 1a and the valve 3.
It invades into the device 4 through. Thereby, the float 11 floats, and the valve body 13a closes the valve seat 13b. This prevents water from spilling out of the device 4.
今バルブ２を急閉止すると、バルブ２の下流側
は急に負圧となる。そのため弁室１４内の水は配
管１へ流れ出し、筒体７内の水も弁室１４を経て
配管１へ流入する。ついでフロート１１は沈下し
逆止弁１３は開いて底９に当たつて停止する（第
２図はこの状態を示す）。そしてさらにこの水に
続いて開口部５より空気が装置４に入り***１
０、弁室１４を経て配管１内に入り、この空気が
バルブ２の下流部の負圧部を満たすことになる。
従つて配管１内の反射衝撃流はこの空気のクツシ
ヨンにより直接バルブ２に水撃を与えずバルブ２
を破損しない。 If valve 2 is now suddenly closed, the downstream side of valve 2 suddenly becomes negative pressure. Therefore, the water in the valve chamber 14 flows out into the pipe 1, and the water in the cylinder body 7 also flows into the pipe 1 through the valve chamber 14. The float 11 then sinks, the check valve 13 opens, and stops when it hits the bottom 9 (FIG. 2 shows this state). Further, following this water, air enters the device 4 through the opening 5 and the small hole 1.
0, enters the pipe 1 through the valve chamber 14, and this air fills the negative pressure section downstream of the valve 2.
Therefore, the reflected shock flow in the pipe 1 does not directly apply water hammer to the valve 2 due to this air cushion.
Do not damage the product.
緩衝板１５は配管より来る水が直接弁体１３ａ
に当たらない役目もしている。 The buffer plate 15 allows water coming from the pipes to flow directly to the valve body 13a.
He also plays a role that doesn't really matter.
（考案の効果）
この考案は以上のように、フロートと逆止弁と
を用い自動的に空気を配管に吸入し、配管に設け
たバルブを水撃による破損から防ぎ、消火装置の
配管等に用いて信頼性ある装置とすることができ
る。(Effects of the invention) As described above, this invention uses a float and a check valve to automatically suck air into the piping, prevent the valve installed in the piping from being damaged by water hammer, and prevent the valve from being damaged by water hammer. It can be used to create a reliable device.
第１図はこの考案に係わる装置を配管に設けた
配管系統図、第２図はこの考案の装置の縦断面図
である。
１……配管、２……バルブ、４……水撃防止装
置、１１……フロート、１３……逆止弁。
FIG. 1 is a piping system diagram in which a device according to this invention is installed in piping, and FIG. 2 is a longitudinal sectional view of the device according to this invention. 1...Piping, 2...Valve, 4...Water hammer prevention device, 11...Float, 13...Check valve.
Claims (1)
バルブ２に近接して設ける装置であつて、この装
置４は筒体７と、この筒体７の下部に連結する弁
室１４を有し、筒体７の上端は外気に開口し、弁
室１４の下部は配管１に連結し、筒体７内にはフ
ロート１１を、そのフロート１１の下部には弁体
１３ａをそれぞれ設け、弁体１３ａは弁室１４に
おいて逆止弁１３を構成し、フロート１１の沈下
位置において逆止弁１３を開くようにするバルブ
２の水撃防止装置。 This device 4 is installed in a downstream piping 1 of a valve 2 provided in the piping, adjacent to this valve 2, and this device 4 has a cylindrical body 7 and a valve chamber 14 connected to the lower part of this cylindrical body 7. The upper end of the cylindrical body 7 is open to the outside air, the lower part of the valve chamber 14 is connected to the pipe 1, a float 11 is provided inside the cylindrical body 7, and a valve body 13a is provided below the float 11. Reference numeral 13a denotes a water hammer prevention device for the valve 2, which constitutes the check valve 13 in the valve chamber 14 and opens the check valve 13 when the float 11 is in the lowered position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2453584U JPS60138090U (en) | 1984-02-24 | 1984-02-24 | water hammer prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2453584U JPS60138090U (en) | 1984-02-24 | 1984-02-24 | water hammer prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60138090U JPS60138090U (en) | 1985-09-12 |
| JPH0334560Y2 true JPH0334560Y2 (en) | 1991-07-22 |
Family
ID=30518771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2453584U Granted JPS60138090U (en) | 1984-02-24 | 1984-02-24 | water hammer prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60138090U (en) |
-
1984
- 1984-02-24 JP JP2453584U patent/JPS60138090U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60138090U (en) | 1985-09-12 |
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