JPS5845344Y2 - Freeze rupture prevention valve - Google Patents
Freeze rupture prevention valveInfo
- Publication number
- JPS5845344Y2 JPS5845344Y2 JP6339281U JP6339281U JPS5845344Y2 JP S5845344 Y2 JPS5845344 Y2 JP S5845344Y2 JP 6339281 U JP6339281 U JP 6339281U JP 6339281 U JP6339281 U JP 6339281U JP S5845344 Y2 JPS5845344 Y2 JP S5845344Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- prevention valve
- rupture prevention
- volumetric expansion
- freeze
- 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
Landscapes
- Safety Valves (AREA)
Description
【考案の詳細な説明】
水の凍結時の体積膨張によって発生する力は、水圧で３
０ ｋｇ／ｃｒｎ２以上の圧力に耐えるように設計され
た減圧弁を破壊する強さをもっている。[Detailed explanation of the invention] The force generated by the volumetric expansion when water freezes is 3
It has the strength to destroy pressure reducing valves designed to withstand pressures of 0 kg/crn2 or more.
凍結の際の体積膨張は、配管構成部品の材料の伸びの限
度内であれば、解凍後に再使用が可能な状態になるが、
引張許容応力の限界を越えれば、破壊することとなる。If the volumetric expansion during freezing is within the limit of the elongation of the material of the piping components, it will be possible to reuse it after thawing.
If the allowable tensile stress limit is exceeded, it will break.
したがって弁自体の強度を上げればおそらく他の構成部
品との強度的なバランスが崩れ、他の部分が破壊するも
のと思われる。Therefore, if the strength of the valve itself is increased, the strength balance with other components will probably be disrupted, and other parts will likely break.
そこでこの考案においては、凍結時の液体の体積膨張を
、リノー７弁が凍りつく前に液体の状態で外部に排出す
ることによって逃がしてやることによって、弁自体及び
他の構成部品の凍結破壊を防止しようとするものであっ
て、その詳細を以下に図示の実施例にしたがって説明す
る。Therefore, in this invention, the volumetric expansion of the liquid when it freezes is released by discharging it to the outside in liquid form before the Linault 7 valve freezes, thereby preventing the valve itself and other components from being damaged by freezing. The details thereof will be explained below according to the illustrated embodiment.
図示の実施例はこの考案を水道用減圧弁に適用した場合
を示すものであって、１はボディで、一次側ポート２と
二次側ポート３とを備えるこのボテ゛イ１内には所定の
設定圧で開閉作動する弁部分４が装備される。The illustrated embodiment shows a case where this invention is applied to a pressure reducing valve for water supply, and 1 is a body, and the body 1, which is equipped with a primary side port 2 and a secondary side port 3, contains predetermined settings. A valve part 4 is provided which is actuated to open and close by pressure.
図においてこの弁部分４は弁座５と共働する主弁体６と
、この主弁体６に弁棒７を介して連結されるダイヤフラ
ム８と、スプリング９によって前記主弁体６と反対側か
ら液体すなわち水道水の流通を阻止すべき弁体１０とに
よって構成されており、前記ダイヤフラム８とスプリン
グ９との働きにより、所定圧の水道水を一次側ホト２か
ら二次側ポート３に流通させるものである。In the figure, this valve part 4 has a main valve body 6 cooperating with a valve seat 5, a diaphragm 8 connected to this main valve body 6 via a valve stem 7, and a spring 9 on the opposite side of the main valve body 6. The diaphragm 8 and the spring 9 work together to allow tap water at a predetermined pressure to flow from the primary side port 2 to the secondary side port 3. It is something that makes you
この考案においては、前記−次側と二次側の少くともい
ずれか一方に凍結時の内部圧力上昇を検出し、内部が凍
結する際の体積膨張分を排水すべきリリーフ弁を配設す
るものであって、図示の実施例では一次側と二次側の双
方にそれぞれリリーフ弁１１．１２が設けられており、
各々所定圧で弁体１３．１４がポー１−１５．１６を閉
塞するように作用するスプリング１７．１８を備えてお
り、これらスプリング１７．１８の力は例えば一次側の
リリーフ弁１１においては１２ ｋｇ／Ｃｍ２の圧力で
開放されるように設定され、二次側のリリーフ弁１２に
おいては３ ｋｇ／ｃｍ２に内部圧力が上昇したときに
開放されて外部へ排水するように設定されている。In this device, a relief valve is installed on at least one of the inlet side and the outlet side to detect an increase in internal pressure during freezing and to drain the volumetric expansion when the inside freezes. In the illustrated embodiment, relief valves 11, 12 are provided on both the primary and secondary sides, respectively.
Each valve body 13.14 is provided with a spring 17.18 that acts to close the port 1-15.16 at a predetermined pressure, and the force of these springs 17.18 is, for example, 12. It is set to open at a pressure of kg/cm2, and the relief valve 12 on the secondary side is set to open and drain water to the outside when the internal pressure rises to 3 kg/cm2.
上記構成において、水道水が凍結するような低温の雰囲
気内にこの考案の弁がさらされると、水の部分的凍結に
よって体積膨張が生じ一次側又は二次側の内部圧力が設
定値を越えると、前記スプノング１７又は１８の作用で
弁体１３又は１４が開放され、凍結前の水の状態でリリ
ーフ弁１１又は１２から排水され、したがって凍結時の
体積膨張をこの排水によって外部へ逃がすことができる
ので、弁及びその周辺機器、部品の凍結破壊を有効に阻
止し得るのである。In the above configuration, when the valve of this invention is exposed to an atmosphere at a low temperature where tap water freezes, volumetric expansion occurs due to partial freezing of the water, and the internal pressure on the primary or secondary side exceeds the set value. , the valve body 13 or 14 is opened by the action of the spunong 17 or 18, and water is drained from the relief valve 11 or 12 in the state before freezing, so that the volumetric expansion at the time of freezing can be released to the outside by this drainage. Therefore, freeze damage to the valve and its peripheral equipment and parts can be effectively prevented.
なおこの考案の適用に関しては上述の実施例で述べた水
道用減圧弁に限らず、低温凍結時の体積膨張が悪影響を
与えるおそれのある他の種類の弁にも採用可能である。The application of this invention is not limited to the water pressure reducing valve described in the above embodiment, but can also be applied to other types of valves in which volumetric expansion during low-temperature freezing may have an adverse effect.
図面はこの考案の一実施例の竪断面図である。
なお図において、１・・・・・・ボディー、２・・・・
・・一次側ポート、３・・・・・・二次側ポート、４・
・・・・・弁部分、５・・・・・・弁座、６・・・・・
・主弁体、７・・・・・・弁棒、８・・・・・・ダイヤ
フラム、９・・・・・・スプリング、１０・・・・・・
弁体、１１．１２・・・・・・リリーフ弁、１３．１４
・・・・・・弁体、１５．１６・・・・・・ポー）−１
１７，１８・・・・・・スプリングである。The drawing is a vertical sectional view of one embodiment of this invention. In the figure, 1...body, 2...
...Primary side port, 3...Secondary side port, 4.
... Valve part, 5 ... Valve seat, 6 ...
・Main valve body, 7... Valve stem, 8... Diaphragm, 9... Spring, 10...
Valve body, 11.12... Relief valve, 13.14
... Valve body, 15.16 ... Po) -1
17, 18... springs.
Claims (1)
体の流通を司る弁部分を装備して戊るものにおいて、前
記−次側及び二次側の少くともいずれか一方に、凍結時
の内部圧力上昇を検出し、内部が凍結する際の体積膨張
分を排水すべきＩＪ ＩＪ−７弁を配設して成る凍結破
壊防止弁。In a body equipped with a valve portion for controlling liquid flow in a body having an inlet port and a outlet port, at least one of the inlet side and the outlet side is provided with an internal A freeze rupture prevention valve equipped with an IJ IJ-7 valve that detects a pressure increase and drains the volumetric expansion when the inside freezes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6339281U JPS5845344Y2 (en) | 1981-04-30 | 1981-04-30 | Freeze rupture prevention valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6339281U JPS5845344Y2 (en) | 1981-04-30 | 1981-04-30 | Freeze rupture prevention valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57178866U JPS57178866U (en) | 1982-11-12 |
| JPS5845344Y2 true JPS5845344Y2 (en) | 1983-10-14 |
Family
ID=29859515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6339281U Expired JPS5845344Y2 (en) | 1981-04-30 | 1981-04-30 | Freeze rupture prevention valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5845344Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016217571A (en) * | 2015-05-15 | 2016-12-22 | 東芝キヤリア株式会社 | Valve device and hot water storage type water heater |
-
1981
- 1981-04-30 JP JP6339281U patent/JPS5845344Y2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016217571A (en) * | 2015-05-15 | 2016-12-22 | 東芝キヤリア株式会社 | Valve device and hot water storage type water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57178866U (en) | 1982-11-12 |
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