JPH041281Y2 - - Google Patents
Info
- Publication number
- JPH041281Y2 JPH041281Y2 JP1983167151U JP16715183U JPH041281Y2 JP H041281 Y2 JPH041281 Y2 JP H041281Y2 JP 1983167151 U JP1983167151 U JP 1983167151U JP 16715183 U JP16715183 U JP 16715183U JP H041281 Y2 JPH041281 Y2 JP H041281Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure reducing
- reducing valve
- strainer
- valve
- screen
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000145845 chattering Species 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Control Of Turbines (AREA)
- Lift Valve (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【考案の詳細な説明】
技術分野
本考案は蒸気系に用いる減圧弁に関し、減圧弁
に復水と、塵埃・異物が入らないようにすること
に係わる。[Detailed Description of the Invention] Technical Field The present invention relates to a pressure reducing valve used in a steam system, and relates to preventing condensate, dust, and foreign matter from entering the pressure reducing valve.
技術的背景
減圧弁は二次側の圧力を検出して、非制御流体
の圧力エネルギーを利用して作動する自力式の調
整弁であり、塵埃や異物が弁体と弁座の間に挟ま
つたり、弁面を損傷したり、受圧ピストンとシリ
ンダの摺動部に挟まつたりすると、完全閉止がで
きなくなり、二次側が一次側の圧力まで上昇する
等の障害が生じる。Technical Background A pressure reducing valve is a self-powered regulating valve that detects the pressure on the secondary side and operates using the pressure energy of the non-controlled fluid. If the valve surface is damaged or caught between the sliding parts of the pressure-receiving piston and cylinder, it will not be able to close completely and problems will occur, such as the pressure on the secondary side rising to the level of the primary side.
また、蒸気は冷却されると復水になり、特に、
通気初期は配管系が低温であるので多量の復水が
発生し、蒸気用減圧弁には多かれ少なかれ蒸気と
共に復水が流入する。この復水のために、減圧弁
はハンチング・チヤタリング等で振動を発生し、
作動に支障をきたすばかりでなく、配管系にウオ
ータハンマを誘発して連結した機器を損傷した
り、また復水に接する部分が腐食しやすくなり、
寿命を縮める原因となる。 Also, when steam is cooled it becomes condensate, especially
At the beginning of ventilation, a large amount of condensate is generated because the piping system is at a low temperature, and more or less condensate flows into the steam pressure reducing valve together with the steam. This condensation causes the pressure reducing valve to vibrate due to hunting, chattering, etc.
Not only does it interfere with operation, but it can also cause water hammer in the piping system, damaging connected equipment, and parts that come into contact with condensate are susceptible to corrosion.
It causes shortening of lifespan.
従つて、蒸気用減圧弁では、塵埃・異物ばかり
でなく、復水の流入も防がなければならない。 Therefore, a steam pressure reducing valve must prevent not only dust and foreign matter but also condensate from flowing into the valve.
従来技術とその問題点
そこで、従来は、第２図に示すように、減圧弁
５０の一次側の配管５１に減圧弁に接近してスト
レーナ５２を配置し、また、一次側配管５１のス
トレーナ５２の上流側から立ち下がり配管５３を
分岐させて、ストレーナ５４とスチームトラツプ
５５を配置していた。参照番号５６はストツプ弁
を示す。復水はスチームトラツプで系外に排出
し、塵埃や異物はストレーナ５２で減圧弁５０に
入らないようにするものである。Prior Art and its Problems Therefore, conventionally, as shown in FIG. A falling pipe 53 was branched from the upstream side of the pipe, and a strainer 54 and a steam trap 55 were arranged. Reference number 56 indicates a stop valve. Condensate is discharged out of the system by a steam trap, and dust and foreign matter are prevented from entering the pressure reducing valve 50 by a strainer 52.
しかし、この場合でも、完全閉止ができず、も
れが生じて二次側の圧力が上昇することがある。
これはストレーナを通過する微細な塵埃・異物に
よるものである。ストレーナのスクリーンのこし
孔、あるいはメツシユの大きさを小さくすればよ
いが、これも圧力損失や目詰りの観点から、実際
上限界がある。 However, even in this case, complete closure may not be possible, causing leakage and increasing pressure on the secondary side.
This is due to fine dust and foreign matter passing through the strainer. It is possible to reduce the size of the strainer screen holes or mesh, but this also has practical limits from the viewpoint of pressure loss and clogging.
（技術的課題）
本考案の技術的課題は、ストレーナを通過した
微細な塵埃・異物を減圧弁に至るまでに系外に排
除してしまうことである。(Technical Problem) The technical problem of the present invention is to eliminate fine dust and foreign matter that have passed through the strainer out of the system before reaching the pressure reducing valve.
技術的手段
上記の技術的課題を解決するために講じた本考
案の技術的手段は、スクリーンを内蔵したストレ
ーナと、入口及び排出口を有するスチームトラツ
プと、主弁を有する減圧弁とから成るものにおい
て、ストレーナのスクリーンの下流側と、減圧弁
の主弁の上流側とを連通する通路の底部に、スチ
ームトラツプの入口を開口させたものである。Technical Means The technical means of the present invention taken to solve the above technical problem consists of a strainer with a built-in screen, a steam trap with an inlet and an outlet, and a pressure reducing valve with a main valve. In this type of steam trap, the inlet of the steam trap is opened at the bottom of a passage communicating between the downstream side of the screen of the strainer and the upstream side of the main valve of the pressure reducing valve.
技術的手段の作用 上記の技術的手段の作用は下記の通りである。Action of technical means The operation of the above technical means is as follows.
蒸気は先ずストレーナに入り、スクリーンのこ
し孔よりも大きい塵埃や異物はそこでスクリーン
に補足される。蒸気はスクリーンを通過して減圧
弁に向かう。スクリーンを通過した復水は比重が
蒸気よりも大きいので下方に向かいスチームトラ
ツプに入る。スクリーンを通過した微細な塵埃・
異物は、蒸気に対する相対的な比重の大きさ、復
水との親水性・付着作用で、復水と共にスチーム
トラツプに流入する。復水と微細な塵埃・異物は
スチームトラツプから系外に排除される。 The steam first enters the strainer, where any dust or foreign matter larger than the screen's strainer holes is trapped by the screen. The steam passes through a screen to a pressure reducing valve. The condensate that has passed through the screen has a higher specific gravity than the steam, so it heads downward and enters the steam trap. Fine dust that passed through the screen
Foreign matter flows into the steam trap together with condensate due to its relative specific gravity to steam and its hydrophilicity and adhesion to condensate. Condensate, fine dust, and foreign matter are removed from the system through the steam trap.
特有の効果 本考案は下記の特有の効果を生じる。Unique effects The present invention produces the following specific effects.
ストレーナのスクリーンを通過する微細な塵
埃・異物の多くがスチームトラツプで系外に排除
されて減圧弁に入らないので、弁部や摺動部分で
の挾み込み、弁部の摩耗・損傷が少なくなり、不
完全閉止が少なくなる。 Most of the fine dust and foreign matter that pass through the strainer screen are removed from the system by the steam trap and do not enter the pressure reducing valve, so there is no risk of getting caught in the valve or sliding parts, or wearing out or damaging the valve. This results in fewer incomplete closures.
ストレーナを通過した復水がスチームトラツプ
に入るので、この減圧弁用のストレーナをスチー
ムラツプに兼用できる。 Since the condensate that has passed through the strainer enters the steam trap, the strainer for the pressure reducing valve can also be used as the steam trap.
実施例の説明
上記の技術的手段の具体例を示す実施例（第１
図参照）を説明する。Description of Examples Example (first example) showing a specific example of the above technical means
(see figure).
参照番号１は減圧弁を示す。図示の減圧弁は内
部検出式、パイロツト作動形であり、パイロツト
弁は金属ダイヤフラムで、主弁９はピストン・シ
リンダで駆動するものである。この減圧弁１の構
造、作動は周知のものであるので、詳細な説明は
省略する。 Reference number 1 indicates a pressure reducing valve. The illustrated pressure reducing valve is of the internal detection type and pilot operated type, the pilot valve being a metal diaphragm, and the main valve 9 being driven by a piston/cylinder. Since the structure and operation of this pressure reducing valve 1 are well known, detailed explanation will be omitted.
減圧弁１の本体２の入口側部分は、下記のスト
レーナとスチームトラツプのケーシングを一体的
に兼ねる。以下、言及する部位の混同を避けるた
めに、本体２の左端開口５をストレーナの入口と
言い、右端開口６を減圧弁の出口と言い、減圧弁
の主弁９の上流側付近を減圧弁の入口と言う。 The inlet side portion of the main body 2 of the pressure reducing valve 1 integrally serves as a casing for a strainer and a steam trap, which will be described below. Hereinafter, to avoid confusion regarding the parts mentioned, the left end opening 5 of the main body 2 will be referred to as the strainer inlet, the right end opening 6 will be referred to as the pressure reducing valve outlet, and the vicinity upstream of the main valve 9 of the pressure reducing valve will be referred to as the strainer inlet. It's called the entrance.
ストレーナの入口５と減圧弁１の入口との間
に、円筒形状のスクリーン４を斜に配置する。ス
クリーン４の一端はストレーナの入口５の付近に
設けた隔壁に当て、他端は本体２の下側の壁にね
じ結合した保持プラグ１７に当てて固定する。上
記隔壁には入口５の流体をスクリーン４の内部に
導入する円形の孔が開けてある。尚、円筒形状の
スクリーン４の内周側を上流側または一次側と言
い、外周側を下流側または二次側と言う。スクリ
ーン４の下流側は充分に広い通路３で減圧弁１の
入口に連結している。 A cylindrical screen 4 is obliquely arranged between the strainer inlet 5 and the pressure reducing valve 1 inlet. One end of the screen 4 is placed against a bulkhead provided near the inlet 5 of the strainer, and the other end is secured against a retaining plug 17 screwed onto the lower wall of the main body 2. The partition wall is provided with a circular hole for introducing the fluid from the inlet 5 into the screen 4. Note that the inner peripheral side of the cylindrical screen 4 is referred to as the upstream side or primary side, and the outer peripheral side is referred to as the downstream side or secondary side. The downstream side of the screen 4 is connected to the inlet of the pressure reducing valve 1 by a sufficiently wide passage 3.
保持プラグ１７には中心軸に沿つてブロー孔１
９を開け、このブロー孔１９はブロープラグ１８
で塞いである。 The holding plug 17 has a blow hole 1 along the central axis.
9 is opened, and this blow hole 19 is connected to the blow plug 18.
It is blocked by
本体２の下部に蓋部材２０をボルト（図示せ
ず）で取り付けて、スチームトラツプの弁室１３
を形成する。弁室１３はスクリーン４の下方に配
置する。弁室１２に球形のフロート１２を収容す
る。蓋部材２０に形成した排出口１６の奥壁に、
弁孔１５を形成した弁座部材１４をねじ結合す
る。 The lid member 20 is attached to the lower part of the main body 2 with bolts (not shown), and the valve chamber 13 of the steam trap is closed.
form. The valve chamber 13 is arranged below the screen 4. A spherical float 12 is accommodated in the valve chamber 12. On the back wall of the discharge port 16 formed in the lid member 20,
The valve seat member 14 having the valve hole 15 formed therein is screwed together.
スチームトラツプの弁室１３は下位入口１０と
上位入口１１を通してスクリーンの周囲の空間に
連結している。下位入口１０はスクリーン４の周
囲の空間の最も低い部分に開口し、上記入口はそ
れよりも高い、スクリーン４の上端部付近に開口
している。また、下位入口１０の開口面積は上位
入口１１よりも大きくしてある。 The valve chamber 13 of the steam trap is connected to the space around the screen through a lower inlet 10 and an upper inlet 11. The lower inlet 10 opens at the lowest part of the space around the screen 4, and the above-mentioned inlet opens at a higher point near the upper end of the screen 4. Further, the opening area of the lower entrance 10 is made larger than that of the upper entrance 11.
上位のスチームトラツプの作動は、弁室１３の
水位と共にフロート１２が浮上降下して弁孔１５
を開閉し、復水を自動的に排出するものである。 The operation of the upper steam trap occurs when the float 12 ascends and descends with the water level in the valve chamber 13, causing the valve hole 15 to rise and fall.
It opens and closes and automatically drains condensate.
本実施例の場合は、スチームトラツプの入口１
０，１１を上記の様に２つ設けたので、スクリー
ン４を通過し、その周りの空間（通路３）の底部
に溜る復水や塵埃・異物がスチームトラツプ弁室
１３に流入しやすい。 In this embodiment, the steam trap inlet 1
Since two valves 0 and 11 are provided as described above, condensate, dust, and foreign matter that pass through the screen 4 and accumulate at the bottom of the space (passage 3) around the screen 4 easily flow into the steam trap valve chamber 13.
他の実施例の説明
本考案は上記の実施例に限られるものではな
い。Description of other embodiments The present invention is not limited to the embodiments described above.
減圧弁とストレーナとスチームトラツプとは、
それそれ別個のケーシングに作り、上流側からス
トレーナ、スチームトラツプ、減圧弁の順に連結
していもよい。この場合、ストレーナと減圧弁の
間の通路の底部にスチームトラツプの入口が開口
する様に配管しなければならない。 What are pressure reducing valves, strainers and steam traps?
They may be made into separate casings and connected in this order from the upstream side to the strainer, steam trap, and pressure reducing valve. In this case, piping must be installed so that the inlet of the steam trap opens at the bottom of the passage between the strainer and the pressure reducing valve.
第１図は本考案による蒸気用減圧弁の実施例の
断面図、第２図は従来技術を示す概略配管図であ
る。
１……減圧弁、３……ストレーナと減圧弁の間
の通路、４……スクリーン、５……ストレーナの
入口、６……減圧弁の出口、９……減圧弁の主
弁、１０，１１……スチームトラツプの入口、１
２……フロート、１６……排出口。
FIG. 1 is a cross-sectional view of an embodiment of the steam pressure reducing valve according to the present invention, and FIG. 2 is a schematic piping diagram showing the prior art. 1... Pressure reducing valve, 3... Passage between strainer and pressure reducing valve, 4... Screen, 5... Inlet of strainer, 6... Outlet of pressure reducing valve, 9... Main valve of pressure reducing valve, 10, 11 ...Steam trap entrance, 1
2...Float, 16...Discharge port.
Claims (1)
び排出口を有するスチームトラツプと、主弁を
有する減圧弁とから成るものにおいて、ストレ
ーナのスクリーンの下流側と、減圧弁の主弁の
上流側とを連通する通路の底部に、スチームト
ラツプの入口を開口させた蒸気用減圧弁。 (2) スチームトラツプの入口を、ストレーナのス
クリーンの下流側と減圧弁の主弁の上流側とを
連通する通路の底部に設けると共に、該底部よ
りも上方に少なくとも１カ所開口させた、実用
新案登録請求の範囲第１項記載の蒸気用減圧
弁。[Claims for Utility Model Registration] (1) In a device consisting of a strainer with a built-in screen, a steam trap having an inlet and an outlet, and a pressure reducing valve having a main valve, the downstream side of the screen of the strainer and the pressure reducing A steam pressure reducing valve with a steam trap inlet opened at the bottom of the passage that communicates with the upstream side of the main valve. (2) In practical use, the inlet of the steam trap is provided at the bottom of the passage communicating between the downstream side of the screen of the strainer and the upstream side of the main valve of the pressure reducing valve, and at least one opening is made above the bottom. A steam pressure reducing valve according to claim 1 of the patent registration claim.
Priority Applications (28)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16715183U JPS6073803U (en) | 1983-10-27 | 1983-10-27 | Steam pressure reducing valve |
| NZ209289A NZ209289A (en) | 1983-10-27 | 1984-08-20 | Gas pressure reducing valve with liquid separator |
| AU32266/84A AU569538B2 (en) | 1983-10-27 | 1984-08-22 | Reducing valve equipped with a vapor-liquid separator |
| ZA846626A ZA846626B (en) | 1983-10-27 | 1984-08-24 | A reducing valve equipped with a vapor-liquid separator |
| KR1019840005397A KR850003775A (en) | 1983-10-27 | 1984-09-03 | Pressure reducing valve with separator |
| IN611/CAL/84A IN163096B (en) | 1983-10-27 | 1984-09-03 | |
| CA000464088A CA1243919A (en) | 1983-10-27 | 1984-09-26 | Reducing valve equipped with a vapour-liquid separator |
| NL8403039A NL189151C (en) | 1983-10-27 | 1984-10-05 | GAS REDUCING VALVE AND LIQUID SEPARATOR. |
| LU85592A LU85592A1 (en) | 1983-10-27 | 1984-10-15 | REDUCING VALVE, PROVIDED WITH A VAPOR LIQUID SEPARATOR |
| FI844093A FI76634C (en) | 1983-10-27 | 1984-10-17 | REDUCERINGSVENTIL FOERSEDD MED EN AONGA-VAETSKA-SEPARATOR. |
| CH5025/84A CH669647A5 (en) | 1983-10-27 | 1984-10-18 | |
| DE19843438115 DE3438115A1 (en) | 1983-10-27 | 1984-10-18 | REDUCING VALVE, PROVIDED WITH A STEAM LIQUID SEPARATOR |
| GB08426671A GB2149147B (en) | 1983-10-27 | 1984-10-22 | A reducing valve equipped with a vapor-liquid separator |
| BR8405363A BR8405363A (en) | 1983-10-27 | 1984-10-23 | REDUCING VALVE |
| GR80745A GR80745B (en) | 1983-10-27 | 1984-10-23 | Reducing valve equipped with vapor-liquid separator |
| PT79402A PT79402B (en) | 1983-10-27 | 1984-10-24 | A reducing valve equipped with a vapor-liquid separator |
| NO844232A NO158828C (en) | 1983-10-27 | 1984-10-24 | REDUCTION VALVE EQUIPPED WITH STEAM / WASHER Separator. |
| AT3400/84A AT392341B (en) | 1983-10-27 | 1984-10-25 | PRESSURE REDUCER VALVE WITH A LIQUID SEPARATOR |
| SE8405343A SE459984B (en) | 1983-10-27 | 1984-10-25 | REDUCTION VALVE WITH ANTI-WATER SPARE PARTS |
| MX84203167A MX160557A (en) | 1983-10-27 | 1984-10-25 | IMPROVEMENTS IN REDUCING VALVE EQUIPPED WITH A LIQUID VAPOR SEPARATOR |
| ES84537049A ES537049A0 (en) | 1983-10-27 | 1984-10-25 | IMPROVEMENTS IN REDUCING VALVES |
| BE2/60526A BE900895A (en) | 1983-10-27 | 1984-10-25 | REDUCING VALVE FITTED WITH A VAPOR FLUID SEPARATOR. |
| PH31365A PH24684A (en) | 1983-10-27 | 1984-10-25 | A reducing valve equipped with a vapor-liquid separator |
| IT2331884A IT1196311B (en) | 1983-10-27 | 1984-10-25 | REDUCTION VALVE EQUIPPED WITH A STEAM-LIQUID SEPARATOR |
| FR8416454A FR2554211B1 (en) | 1983-10-27 | 1984-10-26 | REDUCTION VALVE EQUIPPED WITH A STEAM-LIQUID SEPARATOR |
| DK510784A DK162949C (en) | 1983-10-27 | 1984-10-26 | REDUCING VALVE |
| KR2019870022607U KR880004076Y1 (en) | 1983-10-27 | 1987-12-21 | A reducing valve equipped with a vapor-liquid separator |
| US07/319,417 US4860782A (en) | 1983-10-27 | 1989-03-03 | Reducing valve equipped with a vapor-liquid separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16715183U JPS6073803U (en) | 1983-10-27 | 1983-10-27 | Steam pressure reducing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6073803U JPS6073803U (en) | 1985-05-24 |
| JPH041281Y2 true JPH041281Y2 (en) | 1992-01-17 |
Family
ID=15844365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16715183U Granted JPS6073803U (en) | 1983-10-27 | 1983-10-27 | Steam pressure reducing valve |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6073803U (en) |
| ZA (1) | ZA846626B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5398521A (en) * | 1977-02-08 | 1978-08-29 | Otani Shigeki | Steam trap utilizing closure operatable free rptaion |
-
1983
- 1983-10-27 JP JP16715183U patent/JPS6073803U/en active Granted
-
1984
- 1984-08-24 ZA ZA846626A patent/ZA846626B/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5398521A (en) * | 1977-02-08 | 1978-08-29 | Otani Shigeki | Steam trap utilizing closure operatable free rptaion |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6073803U (en) | 1985-05-24 |
| ZA846626B (en) | 1985-04-24 |
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