JPH06100315B2 - Condensate drainage device - Google Patents
Condensate drainage deviceInfo
- Publication number
- JPH06100315B2 JPH06100315B2 JP1267399A JP26739989A JPH06100315B2 JP H06100315 B2 JPH06100315 B2 JP H06100315B2 JP 1267399 A JP1267399 A JP 1267399A JP 26739989 A JP26739989 A JP 26739989A JP H06100315 B2 JPH06100315 B2 JP H06100315B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- orifice
- pressure
- condensate
- operation valve
- 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 - Fee Related
Links
Landscapes
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
- Jet Pumps And Other Pumps (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 この発明は、蒸気や圧縮空気中に於て発生する復水を自
動的に系外へ排出する復水排出装置に関する。Description: TECHNICAL FIELD The present invention relates to a condensate discharge device that automatically discharges condensed water generated in steam or compressed air to the outside of the system.
〈従来の技術〉 従来の復水排出装置として一般的にスチームトラップ
や、エアートラップがある。これらは種々の型式のもの
があるが、例えばフロート式のものを説明すると、入
口、出口を有する弁筐体内に弁室を形成し、弁室と出口
との連通部に弁口を有する弁座部材を配置し、そして前
記弁室内に球形の中空フロート弁を自由状態で配置した
もので、フロート弁が弁室内で再降下している時は前記
弁口を塞ぐように配置されている。入口から弁室に復水
が流入するとその水位に応じてフロート弁は浮上して弁
口を開弁して復水が出口へ排出される。復水の排出によ
る水位の降下に伴ってフロート弁も降下して弁口を再び
塞いで復水の排出を止める。以下これを繰り返して作動
する。<Prior Art> As a conventional condensate discharge device, there are generally a steam trap and an air trap. There are various types of these types. For example, when explaining the float type, a valve chamber is formed in a valve housing having an inlet and an outlet, and a valve seat having a valve opening at a communication portion between the valve chamber and the outlet. A member is arranged, and a spherical hollow float valve is arranged in the valve chamber in a free state, and is arranged so as to close the valve opening when the float valve is descending again in the valve chamber. When the condensate flows into the valve chamber from the inlet, the float valve floats up according to the water level, opens the valve opening, and discharges the condensate to the outlet. As the water level drops due to the condensate discharge, the float valve also descends, closing the valve opening again and stopping the condensate discharge. After that, the operation is repeated.
〈発明が解決しようとする課題〉 しかし上記のようなトラップでは、弁座及びフロート弁
の摩耗により弁座部材とフロート弁とのシール性を維持
することは困難であり、そのために蒸気や圧縮空気が漏
洩してしまう。特にエアートラップに於ては、圧縮機や
オイラーで混入する高粘度油が復水の中に含まれている
為にその油が弁口を塞いでしまい、弁室内に復水を残し
た状態で閉弁してしまう問題がある。<Problems to be Solved by the Invention> However, in the trap as described above, it is difficult to maintain the sealability between the valve seat member and the float valve due to wear of the valve seat and the float valve, and therefore steam or compressed air is required. Will be leaked. Especially in air traps, high-viscosity oil mixed in by a compressor or oiler is contained in the condensate, so that the oil blocks the valve opening and leaves the condensate in the valve chamber. There is a problem of closing the valve.
従って本発明の技術的課題は、液体と気体を確認して液
体のみを完全に排出して気体は一切逃がさず閉弁し、油
が混入した復水に於ても弁口が詰まらない復水排出装置
を提供することである。Therefore, the technical problem of the present invention is to confirm the liquid and the gas, completely discharge only the liquid and close the valve without releasing the gas at all, and the condensate does not block the valve opening even in the condensate mixed with oil. It is to provide an ejector.
〈課題を解決する為の手段〉 上記の課題を解決するために講じた本発明の技術的手段
は、復水溜りに接続される配管と、その配管上に設けら
れた電動弁等の操作弁と、操作弁の二次側に設けられた
オリフィスと、操作弁とオリフィスの間の配管中の圧力
を検出する為の圧力検出手段と、時限的に操作弁へ開弁
信号を発するものにおいて、操作弁を第１のオリフィス
とし、当該第１オリフィスと上記オリフィスの間の、圧
縮性流体と非圧縮性流体の差異に基く圧力変化を上記圧
力検出手段にて検出して、上記第１オリフィスとしての
操作弁へ閉弁信号を発するコントローラを備えると共
に、オリフィスと第１オリフィスとの流量係数の比を0.
8から1.8としたものである。<Means for Solving the Problems> The technical means of the present invention taken to solve the above problems is a pipe connected to a condensate reservoir and an operation valve such as an electric valve provided on the pipe. In the orifice provided on the secondary side of the operation valve, the pressure detection means for detecting the pressure in the pipe between the operation valve and the orifice, and the one that issues a valve opening signal to the operation valve in a timely manner, The operation valve is a first orifice, and the pressure change between the first orifice and the orifice based on the difference between the compressible fluid and the incompressible fluid is detected by the pressure detecting means, and the first orifice is used as the first orifice. In addition to being equipped with a controller that outputs a valve closing signal to the operation valve of, the ratio of the flow coefficient between the orifice and the first orifice is 0.
8 to 1.8.
〈作用〉 コントローラにより発せられた開弁信号により操作弁は
開弁して復水溜りの復水をオリフィスを通して系外へ排
出する。復水の排出が終り操作弁及びオリフィスを蒸気
または圧縮空気等の気体が通過する時、操作弁とオリフ
ィスの間の配管中の圧力は復水が通過する時の圧力よえ
いも高くなる。これは二つのオリフィスを非圧縮性流体
が流れる時と圧縮性流体が流れる時、二つのオリフィス
間の圧力は圧縮性流体の方が高くなるという周知の事実
に基くものである。高くなった圧力は圧力検出手段で検
知され、コントローラから操作弁へ閉弁信号が発せられ
て蒸気または圧縮空気等の気体の流出は止まる。そし
て、コントローラからは時限的に操作弁へ開弁信号が発
せられるので、ある所定の時間が経過すれば再び操作弁
は開弁して復水を排出する。<Operation> The operation valve is opened by the valve opening signal generated by the controller, and the condensate in the condensate reservoir is discharged to the outside of the system through the orifice. When the condensate is discharged and gas such as steam or compressed air passes through the operation valve and the orifice, the pressure in the pipe between the operation valve and the orifice becomes higher than the pressure when the condensate passes. This is based on the well-known fact that the pressure between two orifices becomes higher when the incompressible fluid flows through the two orifices and when the compressible fluid flows through the two orifices. The increased pressure is detected by the pressure detection means, and a valve closing signal is issued from the controller to the operation valve to stop the outflow of vapor or gas such as compressed air. Then, since the controller outputs the valve opening signal to the operation valve in a timed manner, the operation valve is opened again and the condensate is discharged after a predetermined time elapses.
〈実施例〉 上記技術的手段の具体例を示す実施例を説明する。（第
１図及び第２図参照） 本実施例の復水排出装置は圧縮空気中に発生する復水を
排出するのに適用したものである。圧縮機（図示せず）
と接続される配管２と装置への供給配管４が連結された
レシーバタンク６の底部に復水排出管８を接続する。復
水排出管８には電動弁10とその二次側に前記電動弁10と
略等しい流量係数を有するオリフィス12を配置し、電動
弁10とオリフィス12の間の配管の圧力を検出する圧力検
出器14を設ける。そして、圧力検出器14と電動弁10をコ
ントローラ16に信号線で接続する。コントローラ16は時
限的に電動弁10へ開弁信号を出力して電動弁10を開弁せ
しめ復水を排出し、復水の排出完了を電動弁10とオリフ
ィス12の間の圧力上昇により確認しこの時の上昇した圧
力を前記圧力検出器14にて検出して操作弁へ閉弁信号を
発する機能を有する。開弁信号を発する時間間隔は復水
の発生量に応じて任意に設定することができる。<Example> An example showing a specific example of the above technical means will be described. (See FIG. 1 and FIG. 2) The condensate discharge device of the present embodiment is applied to discharge the condensed water generated in the compressed air. Compressor (not shown)
A condensate discharge pipe 8 is connected to the bottom of a receiver tank 6 in which a pipe 2 connected to the device and a supply pipe 4 to the apparatus are connected. An electric valve 10 and an orifice 12 having a flow coefficient substantially equal to that of the electric valve 10 are arranged in the condensate discharge pipe 8 on the secondary side thereof, and pressure detection is performed to detect the pressure of the pipe between the electric valve 10 and the orifice 12. A container 14 is provided. Then, the pressure detector 14 and the motor-operated valve 10 are connected to the controller 16 by a signal line. The controller 16 outputs a valve opening signal to the motor-operated valve 10 in a timely manner to open the motor-operated valve 10 to discharge the condensate, and confirms the completion of condensate discharge by checking the pressure increase between the motor-operated valve 10 and the orifice 12. It has a function of detecting the increased pressure at this time by the pressure detector 14 and issuing a valve closing signal to the operation valve. The time interval for issuing the valve opening signal can be arbitrarily set according to the amount of condensed water generated.
作用を説明すると、コントローラ16から発せられた開弁
信号により電動弁10は開弁してレシーバタンク６内の底
部に溜る復水をオリフィス12を通して系外へ排出する。
復水の排出が終り電動弁10及びオリフィス12をエアーが
通過する時、電動弁10とオリフィス12の間の配管中の圧
力は復水が通過する時の圧力よりも高くなる。これは第
２図に示すように二つのオリフィス18,20を有する配管2
2内を流体が通過する際、入口圧力をP1,中間圧力をP2,
出口圧力をP3とし、二つのオリフィス18,20の流量係数C
v1とCv2が略等しい場合、復水のような非圧縮性流体で
は、 P2＝（P1＋P3）/2 となり、空気のような圧縮性流体では、 P2＞（P1＋p3）/2 となるからである。空気が流れる場合を詳述すれば、P1
が7Kg/cm2Ｇ程度の場合、第１のオリフィス18では非チ
ョーク流れとなり、空気流量は、 で表され、第２オリフィス20ではチョーク流れとなっ
て、 ｑ＝0.2＊Cv1＊P2 ［m3/min］ で表される。P1,P2における空気の密度比は 1:P2/P1 であり、流れの連続性から、 ここでCv1とCv2が略等しい故に、上式は となり、ｘ＝P2/P1とおくと、 ４＊（１−ｘ）＝x3 従って、上式の解は、ｘ＝0.848となる。例えば、P1が7
Kg/cm2Ｇ（8Kg/cm2abs）とすれば、 P2＝８＊0.848＝6.78Kg/cm2Ｇ ＝5.78Kg/cm2abs となり、P2＞（P1＋P3）/2が証明される。この時復水の
場合にはP2は3.5Kg/cm2Ｇである。以上の計算に於てはP
3は体気圧として扱っている。To explain the operation, the motor-operated valve 10 is opened by the valve opening signal issued from the controller 16 and the condensed water accumulated at the bottom of the receiver tank 6 is discharged to the outside of the system through the orifice 12.
When the condensate is discharged and the air passes through the motor-operated valve 10 and the orifice 12, the pressure in the pipe between the motor-operated valve 10 and the orifice 12 becomes higher than the pressure when the condensate passes. This is a pipe 2 with two orifices 18, 20 as shown in FIG.
When the fluid passes through 2, the inlet pressure is P1, the intermediate pressure is P2,
The outlet pressure is P3 and the flow coefficient C of the two orifices 18 and 20 is C.
This is because when v1 and Cv2 are approximately equal, P2 = (P1 + P3) / 2 for an incompressible fluid such as condensate and P2> (P1 + p3) / 2 for a compressible fluid such as air. If you explain the case where air flows in detail, P1
Is about 7 kg / cm 2 G, the first orifice 18 has a non-choke flow, and the air flow rate is And becomes a choked flow at the second orifice 20, and is expressed by q = 0.2 * Cv1 * P2 [m 3 / min]. The density ratio of air in P1 and P2 is 1: P2 / P1, and from the continuity of the flow, Since Cv1 and Cv2 are almost equal here, the above equation becomes Next, placing the x = P2 / P1, 4 * (1-x) = x 3 Thus, solutions of the above equation becomes x = 0.848. For example, P1 is 7
If Kg / cm 2 G (8Kg / cm 2 abs), P2 = 8 * 0.848 = 6.78Kg / cm 2 G = 5.78Kg / cm 2 abs next, P2> (P1 + P3) / 2 is proved. At this time, P2 is 3.5 kg / cm 2 G in case of condensate. In the above calculation, P
3 is treated as body pressure.
以上のように高くなった電動弁10とオリフィス12の間の
圧力は圧力検出器14で検知され、予めP1の0.848倍の圧
力値が与えられたコントローラ16で前記信号値と比較さ
れ、電動弁へ閉弁信号が発せられた圧縮空気の流出は止
まる。その後、コントローラ16からは時限的に電動弁10
へ開弁信号が発せられるので、ある所定の時間が経過す
れば再び電動弁10は開弁してレシーバタンク６内に溜っ
た復水を排出する。The pressure between the electrically operated valve 10 and the orifice 12 which has increased as described above is detected by the pressure detector 14, and compared with the signal value by the controller 16 to which a pressure value 0.848 times P1 is given in advance, and the electrically operated valve The outflow of the compressed air for which the valve closing signal is issued stops. Then, from the controller 16 the motorized valve 10
Since a valve opening signal is issued to the motor-operated valve 10, the motor-operated valve 10 opens again after a predetermined time, and the condensed water accumulated in the receiver tank 6 is discharged.
上記実施例は電動弁10とオリフィス12の流量係数Cv1とC
v2が略等しい場合であるが、両者が等しくなくても良
く、その場合を以下に説明する。In the above embodiment, the flow rate coefficients Cv1 and C of the electric valve 10 and the orifice 12 are
Although v2 is almost equal, both may not be equal, and the case will be described below.
上記Ａ式に於てＺ＝Cv2/Cv1,x＝P2/P1とすれば、 X3＝（4/Z2）＊（１−ｘ） で表される。この式に基いてｚとｘの関係を求めると、
以下のようになる。If the above Equation A Te at the Z = Cv2 / Cv1, x = P2 / P1, X 3 = (4 / Z 2) is represented by * (1-x). When the relation between z and x is calculated based on this equation,
It looks like this:
例えば、オリフィス12の流量係数Cv2が電動弁10の流量
係数Cv1の1.25倍に選定した場合、中間圧力P2は入口圧
力P1の0.8倍以上になれば、そこを通過している流体が
復水から圧縮空気に代ったこと、即ち、復水の排出が完
了したことを意味する。従ってコントローラ16に予めP1
の0.8倍の圧力値を入力しておくことにより、この圧力
値になれば電動弁10に閉弁信号を出力する。 For example, when the flow coefficient Cv2 of the orifice 12 is selected to be 1.25 times the flow coefficient Cv1 of the motor-operated valve 10, if the intermediate pressure P2 becomes 0.8 times or more the inlet pressure P1, the fluid passing therethrough will not be condensed. This means that compressed air has been replaced, that is, the discharge of condensate has been completed. Therefore, the controller 16
By inputting a pressure value that is 0.8 times the pressure value, a valve closing signal is output to the motor-operated valve 10 when this pressure value is reached.
第１オリフィスである電動弁10での非チョーク流れを確
保する為ｘは0.6より大きくなくてはならない。また、
ｘが0.9より大きい時はｚが小さい、即ちオリフィス12
で大きく絞られることになり効果が悪い。従ってｘとｚ
の推奨値は、 ｘ＝0.7〜0.9 ｚ＝0.8〜1.8 である。X must be greater than 0.6 to ensure a non-choked flow in the electrically operated valve 10, which is the first orifice. Also,
When x is larger than 0.9, z is small, that is, the orifice 12
The effect is bad because it will be narrowed down greatly. Therefore x and z
The recommended value of x is 0.7 to 0.9 and z is 0.8 to 1.8.
〈発明の効果〉 本発明によれば、油が混入しているような水質の悪い復
水でも電動弁故に詰まることなく排出することができ
る。また、トラップのようにフロート弁と弁座部材の組
み合せではないので、エロージョンによる蒸気または圧
縮空気の漏洩が無くなる。<Effects of the Invention> According to the present invention, even condensate having poor water quality such as oil can be discharged without being clogged because of the motor-operated valve. Further, unlike the trap, it is not a combination of the float valve and the valve seat member, so that leakage of steam or compressed air due to erosion is eliminated.
第１図は本発明の実施例の復水排出装置の構成図、第２
図は二つのオリフィスを有する配管の模擬図である。 6:レシーバタンク、8:復水排出管 10:電磁弁、12:オリフィス 14:圧力検出器、16:コントローラFIG. 1 is a block diagram of a condensate discharge device according to an embodiment of the present invention, and FIG.
The figure is a simulated view of a pipe with two orifices. 6: Receiver tank, 8: Condensate drain pipe 10: Solenoid valve, 12: Orifice 14: Pressure detector, 16: Controller
Claims (1)
に設けられた電動弁等の操作弁と、操作弁の二次側に設
けられたオリフィスと、操作弁とオリフィスの間の配管
中の圧力を検出する為の圧力検出手段と、時限的に操作
弁へ開弁信号を発するものにおいて、操作弁を第１のオ
リフィスとし、当該第１オリフィスと上記オリフィスの
間の、圧縮性流体と非圧縮性流体の差異に基く圧力変化
を上記圧力検出手段にて検出して、上記第１オリフィス
としての操作弁へ閉弁信号を発するコントローラを備え
ると共に、オリフィスと第１オリフィスとの流量係数の
比を0.8から1.8としたことを特徴とする復水排出装置。1. A pipe connected to a condensate pool, an operation valve such as an electric valve provided on the pipe, an orifice provided on the secondary side of the operation valve, and an operation valve between the operation valve and the orifice. In the pressure detecting means for detecting the pressure in the pipe and the one which issues a valve opening signal to the operation valve in a timely manner, the operation valve is the first orifice, and the compressibility between the first orifice and the orifice is The controller includes a controller that detects a pressure change based on the difference between a fluid and an incompressible fluid by the pressure detecting means and issues a valve closing signal to the operation valve as the first orifice, and the flow rate between the orifice and the first orifice. A condensate discharge device characterized by a coefficient ratio of 0.8 to 1.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1267399A JPH06100315B2 (en) | 1989-10-13 | 1989-10-13 | Condensate drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1267399A JPH06100315B2 (en) | 1989-10-13 | 1989-10-13 | Condensate drainage device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03129198A JPH03129198A (en) | 1991-06-03 |
| JPH06100315B2 true JPH06100315B2 (en) | 1994-12-12 |
Family
ID=17444306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1267399A Expired - Fee Related JPH06100315B2 (en) | 1989-10-13 | 1989-10-13 | Condensate drainage device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06100315B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4847052B2 (en) * | 2005-06-13 | 2011-12-28 | 本田技研工業株式会社 | Gas-liquid separation method and apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60146999A (en) * | 1984-01-09 | 1985-08-02 | 東京プレス工業株式会社 | Automatic draining device for compressed air drains |
| JP2545395B2 (en) * | 1987-06-01 | 1996-10-16 | 株式会社クボタ | Stop device for hydraulic work equipment |
-
1989
- 1989-10-13 JP JP1267399A patent/JPH06100315B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03129198A (en) | 1991-06-03 |
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