JPH0953735A - Water sealing drain pipe device - Google Patents
Water sealing drain pipe deviceInfo
- Publication number
- JPH0953735A JPH0953735A JP22274695A JP22274695A JPH0953735A JP H0953735 A JPH0953735 A JP H0953735A JP 22274695 A JP22274695 A JP 22274695A JP 22274695 A JP22274695 A JP 22274695A JP H0953735 A JPH0953735 A JP H0953735A
- Authority
- JP
- Japan
- Prior art keywords
- water
- pipe
- gas
- sealed
- sealing
- 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.)
- Withdrawn
Links
Landscapes
- Pipe Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば高炉ガス
等を用いるガス焚き原動機を設置しているガスタービン
プラント，コンバインドプラントなどにおいて、燃料ガ
スの配管内に生じるドレンを、ガスは噴出させないよう
に排出する水封排水管装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, for example, in a gas turbine plant, a combined plant or the like having a gas-fired prime mover using blast furnace gas or the like, prevents the gas from ejecting the drain generated in the fuel gas pipe. The present invention relates to a water-sealed drain pipe device for discharging.
【０００２】[0002]
【従来の技術】図２は従来の水封排水管装置を示す。図
示しないガス焚き原動機に高炉ガス等を供給するガス配
管１に、ガスは排出させずドレンのみを排出する装置で
ある。水封排水管装置は、ガス配管１の配管途中で低い
配管箇所の下側に弁８を介して水封Ｕ字管２の一端部が
接続され、水封Ｕ字管２の他端部には、蓋６が取り付け
られ、そのすぐ下部にはオーバフロー管３が接続され、
オーバフロー管３の他端部はドレン受け７に開口してい
る。2. Description of the Related Art FIG. 2 shows a conventional water-sealed drainage pipe device. It is a device that discharges only drain without discharging gas into a gas pipe 1 for supplying blast furnace gas or the like to a gas-fired motor (not shown). In the water-sealing drainage pipe device, one end of a water-sealing U-shaped pipe 2 is connected to a lower side of a low pipe portion midway of the gas pipe 1 through a valve 8 and the other end of the water-sealing U-shaped pipe 2 is connected. Has a lid 6 attached to it, and an overflow pipe 3 is connected immediately below the lid 6.
The other end of the overflow pipe 3 is open to the drain receiver 7.
【０００３】図２において、ガス配管１内を流通する高
炉ガスのような燃料ガスには過飽和あるいは飽和状態の
水蒸気が含まれ、温度等の状態によって液体の水（ドレ
ン）が生じるが、このドレンは不具合であるので排除す
る必要がある。ガス配管１内に生じたドレンは水封Ｕ字
管２内に落下して予め入れてあった封水９と一緒になっ
て溜る。封水９の水位がオーバフロー管３の接続口に達
すると、オーバフロー管３を経てドレン受け７に排出さ
れる。ガス圧により水封Ｕ字管２内の封水９の図の左側
の水位はヘッドＨｒだけ押し下げられる。水封Ｕ字管２
の最大ヘッドＨｍは所要のシール性能が得られる高さ
（深さ）となるように形成されている。In FIG. 2, fuel gas such as blast furnace gas flowing in the gas pipe 1 contains supersaturated or saturated water vapor, and liquid water (drain) is generated depending on the temperature and the like. Is a defect and must be eliminated. The drain generated in the gas pipe 1 falls into the water-sealed U-shaped pipe 2 and accumulates together with the sealing water 9 that has been put in advance. When the water level of the sealing water 9 reaches the connection port of the overflow pipe 3, it is discharged to the drain receiver 7 through the overflow pipe 3. Due to the gas pressure, the water level of the sealing water 9 in the water sealing U-shaped tube 2 on the left side of the drawing is pushed down by the head Hr. Water-sealed U-shaped tube 2
The maximum head Hm is formed to have a height (depth) at which the required sealing performance can be obtained.
【０００４】[0004]
【発明が解決しようとする課題】従来の水封排水管装置
は上記のようであるが、図２において、ガス配管１内を
流通する燃料ガスを消費する図示しないガス焚き原動機
がトリップとか負荷遮断などにより燃料ガスの消費が急
減した場合、ガス配管１内を今まである流速で流れてい
た燃料ガスが先方で急に止められるため、燃料ガスの流
動慣性によりガス配管１内のガス圧力が急に高くなる。
その圧力が水封Ｕ字管２の最大ヘッドＨｍ以上になる
と、封水９のガスシール機能が失われ、オーバフロー管
３から燃料ガスが噴出するというような問題があった。
なお、シミュレーションの結果によれば、トリップとか
負荷遮断などの時のガス圧力は通常の圧力の約４倍とな
る。この圧力以上の深さ（高さ）の最大ヘッドＨｍとす
れば燃料ガスが噴出しないようにするすることができる
が、そのように最大ヘッドＨｍを大きく決定すれば水封
Ｕ字管２の高さが相当に高くなり、設備費等がかさむこ
とになる。The conventional water-sealed drainage pipe device is as described above, but in FIG. 2, a gas-fired motor (not shown) that consumes the fuel gas flowing in the gas pipe 1 trips or cuts off the load. When the consumption of the fuel gas is suddenly reduced due to, for example, the fuel gas that has been flowing at a certain speed in the gas pipe 1 is suddenly stopped at the other end, the gas pressure in the gas pipe 1 is suddenly increased due to the flow inertia of the fuel gas. Become higher.
When the pressure exceeds the maximum head Hm of the water-sealed U-shaped tube 2, the gas sealing function of the sealing water 9 is lost, and there is a problem that fuel gas is ejected from the overflow tube 3.
According to the result of the simulation, the gas pressure at the time of trip or load shedding becomes about four times the normal pressure. If the maximum head Hm having a depth (height) equal to or higher than this pressure is used, it is possible to prevent the fuel gas from being ejected. However, if the maximum head Hm is determined to be large in this way, the height of the water-sealed U-shaped tube 2 will be increased. Will be considerably higher, and equipment costs will increase.
【０００５】この発明は上記課題を解消するためになさ
れたもので、水封Ｕ字管２の高さをあまり高くする必要
がなく、ガス圧力の異常上昇時でも燃料ガスの噴出を防
止することができる水封排水管装置を得ることを目的と
する。The present invention has been made to solve the above-mentioned problems, and it is not necessary to raise the height of the water-sealed U-shaped tube 2 so much, and it is possible to prevent the fuel gas from being ejected even when the gas pressure is abnormally increased. The purpose is to obtain a water-sealed drainage pipe device that can
【０００６】[0006]
【課題を解決するための手段】この発明に係る水封排水
管装置は、水封Ｕ字管内のオーバフロー管の接続口より
下方の箇所に封水の急速な通過を阻止する流通抵抗体又
はオリフィス板を設けたものである。SUMMARY OF THE INVENTION A water-sealing drainage pipe device according to the present invention is a flow resistor or orifice for preventing rapid passage of sealing water below a connection port of an overflow pipe in a water-sealing U-shaped pipe. It is provided with a plate.
【０００７】この発明における水封排水管装置では、水
封Ｕ字管内のオーバフロー管の接続口より下方の箇所に
流通抵抗体又はオリフィス板が設けられているので、燃
料ガスなどが流通する配管内の圧力が異常に高くなった
とき、その圧力に押されて封水が急激に流出しようとす
るが、流通抵抗体又はオリフィス板による流通抵抗によ
り封水の急速な流動速度が抑制され、封水が流出するま
でにはある程度の時間がかかる。したがって、配管内の
圧力上昇が一時的であれば、そのある程度の時間内には
圧力の異常な上昇はなくなり、残っている封水のシール
作用によりガスの噴出が防止される。また、配管内の圧
力の上昇が通常の範囲であれば、封水の流動速度は大き
くないので、流通抵抗体又はオリフィス板による流通抵
抗は小さく、封水となったドレンは支障なく流出する。In the water-sealed drainage pipe device according to the present invention, since the flow resistor or the orifice plate is provided at a position below the connection port of the overflow pipe in the water-sealed U-shaped pipe, the inside of the pipe through which the fuel gas flows When the pressure of is abnormally high, the sealing water will try to flow out suddenly due to the pressure, but the rapid flow velocity of the sealing water will be suppressed by the flow resistance of the flow resistor or orifice plate, It will take some time before the spillage occurs. Therefore, if the pressure rise in the pipe is temporary, the pressure will not rise abnormally within a certain period of time, and the gas jetting is prevented by the sealing action of the remaining sealing water. Further, if the rise in the pressure in the pipe is within the normal range, the flow velocity of the sealing water is not high, so the flow resistance by the flow resistance body or the orifice plate is small, and the drainage that has sealed the water flows out without trouble.
【０００８】[0008]
【発明の実施の形態】以下、この発明の実施の一形態を
図について説明する。図１はこの発明による水封排水管
装置の実施の一形態を示し、図１は図２に示す水封Ｕ字
管２とオーバフロー管３との接続部の付近を拡大して示
すものである。図１において、２は水封Ｕ字管、３はオ
ーバフロー管、４は支柱、５はオリフィス板、６は蓋で
ある。オリフィス板５は、３本の支柱４で蓋６に取り付
けられており、蓋６を水封Ｕ字管２の端部開口に取り付
けることにより水封Ｕ字管２内に吊すようにして固定さ
れる。オリフィス板５の設置位置はオーバフロー管３の
水封Ｕ字管２への接続口よりある程度下方の位置となる
ように支柱４の長さが決定されている。オリフィス板５
にはオリフィス穴５ｈがあけられている。また、オリフ
ィス板５の外径は水封Ｕ字管２の内径より僅かに小さく
形成され、オリフィス板５の外周と水封Ｕ字管２の内面
との間には周囲隙間５ｃがある。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a water-sealed drainage pipe device according to the present invention, and FIG. 1 is an enlarged view showing the vicinity of a connecting portion between a water-sealed U-shaped pipe 2 and an overflow pipe 3 shown in FIG. . In FIG. 1, 2 is a water-sealed U-shaped tube, 3 is an overflow tube, 4 is a column, 5 is an orifice plate, and 6 is a lid. The orifice plate 5 is attached to the lid 6 by the three columns 4, and is fixed so as to be suspended in the water-sealed U-shaped tube 2 by attaching the lid 6 to the end opening of the water-sealed U-shaped tube 2. It The length of the support column 4 is determined so that the installation position of the orifice plate 5 is located to some extent below the connection port of the overflow pipe 3 to the water-sealed U-shaped pipe 2. Orifice plate 5
An orifice hole 5h is formed in this. The outer diameter of the orifice plate 5 is formed slightly smaller than the inner diameter of the water-sealed U-shaped tube 2, and there is a peripheral gap 5c between the outer circumference of the orifice plate 5 and the inner surface of the water-sealed U-shaped tube 2.
【０００９】この水封排水管装置は、図２に示すよう
に、高炉ガス等を燃料とする図示しないガス焚き原動機
に燃料ガスを供給するガス配管１の配管の途中で低い配
管箇所にあるガス配管１の下側に接続して設置される。
水封Ｕ字管２は所要のガスシール性が得られるように所
定の深さのＵ字状をなし、水封Ｕ字管２の一端部は弁８
を介してガス配管１内に連通接続され、水封Ｕ字管２の
他端部には、開口を塞ぐ蓋６が取り付けられ、そのすぐ
下部にはオーバフロー管３の一端部が連通接続され、オ
ーバフロー管３の他端部はドレン受け７に開口してい
る。As shown in FIG. 2, this water-sealing drainage pipe device is a gas located at a low pipe point in the middle of a pipe of a gas pipe 1 for supplying a fuel gas to a gas-fired prime mover (not shown) which uses blast furnace gas as a fuel. It is installed by connecting to the lower side of the pipe 1.
The water-sealed U-shaped tube 2 has a U shape having a predetermined depth so that a desired gas sealing property can be obtained, and one end of the water-sealed U-shaped tube 2 has a valve 8
Is connected to the inside of the gas pipe 1 via the, a lid 6 for closing the opening is attached to the other end of the water-sealed U-shaped pipe 2, and one end of the overflow pipe 3 is connected to and connected to the lower part thereof, The other end of the overflow pipe 3 is open to the drain receiver 7.
【００１０】次に、図１に示すこの発明による水封排水
管装置の実施の一形態の作用について説明する。図２に
示すガス配管１内を流通する高炉ガスのような燃料ガス
に含まれる水蒸気は過飽和あるいは飽和状態であり、温
度等の状態によって液体の水（ドレン）が生じるので、
これを除去する必要がある。ガス配管１内に生じたドレ
ンは水封Ｕ字管２内に落下して予め入れてあった封水９
と一緒になって溜り、水位がオーバフロー管３の接続口
に達すると、オーバフロー管３を経てドレン受け７に排
出される。大気圧より高いガス配管１内のガス圧によ
り、水封Ｕ字管２内の封水９の図の左側の水位は右側の
水位よりヘッドＨｒだけ押し下げられる。ヘッドＨｒは
燃料ガスの発生源やこの燃料ガスを消費する原動機の運
転条件等によって変化する。水封Ｕ字管２の最大ヘッド
Ｈｍは、このヘッドＨｒの通常の変化範囲の最大の高さ
以上に形成されている。ドレンが溜った封水９は、オー
バフロー管３の接続口に達すれば排出されるが、ガスは
封水９に遮断されて逃げ出すことができない。Next, the operation of the embodiment of the water-sealed drainage pipe device according to the present invention shown in FIG. 1 will be described. Since the water vapor contained in the fuel gas such as the blast furnace gas flowing through the gas pipe 1 shown in FIG. 2 is supersaturated or saturated and liquid water (drain) is generated depending on the temperature or the like,
It needs to be removed. The drain generated in the gas pipe 1 drops into the water-sealed U-shaped pipe 2 and is filled with the water 9
When the water level reaches the connection port of the overflow pipe 3, the water is discharged to the drain receiver 7 through the overflow pipe 3. Due to the gas pressure in the gas pipe 1 higher than the atmospheric pressure, the water level on the left side of the figure of the sealing water 9 in the water sealing U-shaped pipe 2 is pushed down by the head Hr from the water level on the right side. The head Hr changes depending on the source of the fuel gas, the operating conditions of the prime mover that consumes the fuel gas, and the like. The maximum head Hm of the water-sealed U-shaped tube 2 is formed to be equal to or higher than the maximum height of the normal change range of the head Hr. The sealing water 9 in which the drain has accumulated is discharged when it reaches the connection port of the overflow pipe 3, but the gas is blocked by the sealing water 9 and cannot escape.
【００１１】しかしながら、図２において、ガス配管１
内を流通する燃料ガスを消費する図示しないガス焚き原
動機がトリップとか負荷遮断などにより燃料ガスの消費
が急減した場合、ガス配管１内を今まである流速で流れ
ていた燃料ガスが先方で急に止められるため、燃料ガス
の運動慣性によりガス配管１内のガス圧力が一時的に急
に高くなる。その圧力が水封Ｕ字管２の最大ヘッドＨｍ
以上になると、オーバフロー管３へ封水９を吹き出して
しまってガスをシールすべき封水９がなくなり、次いで
オーバフロー管３から燃料ガスが噴出するというような
問題があった。なお、燃料ガス中には一酸化炭素等の有
害物質が含まれているので、ガスが噴出すると不具合で
ある。However, in FIG. 2, the gas pipe 1
If the consumption of fuel gas (not shown) that consumes the fuel gas flowing through the inside suddenly decreases due to trips or load shedding, the fuel gas that has been flowing through the gas pipe 1 at a certain flow velocity suddenly Since it is stopped, the gas pressure in the gas pipe 1 temporarily increases suddenly due to the motion inertia of the fuel gas. The pressure is the maximum head Hm of the water-sealed U-shaped tube 2.
In the above case, there is a problem that the sealing water 9 is blown out to the overflow pipe 3 and the sealing water 9 for sealing the gas is lost, and then the fuel gas is ejected from the overflow pipe 3. Since the fuel gas contains harmful substances such as carbon monoxide, it is a problem if the gas is ejected.
【００１２】そこで、この発明による水封排水管装置で
は、図１に示すように、水封Ｕ字管２内のオーバフロー
管３の接続口より下方の箇所にオリフィス板５を設けた
ことにより、図２において、燃料ガスなどが流通するガ
ス配管１内の圧力が異常に高くなったときは、その圧力
に押されて封水９がオーバフロー管３を経て急激に流出
しようとするが、図１に示すオリフィス板５の箇所で
は、オリフィス穴５ｈ及び周囲隙間５ｃを通過しなけれ
ばならないので、その流通抵抗により封水９の急速な流
動速度が抑制され、封水９が流出してしまうまでにはあ
る程度の時間がかかる。原動機トリップや負荷遮断時に
ガス配管１内のガス圧力が異常に上昇する時間は約１秒
間であるので、そのある程度の時間内には圧力の異常な
上昇はなくなり、封水９が全部流出することが防止され
てガスの噴出は防止される。また、ガス配管１内の圧力
の上昇が所定の正常な程度であれば、封水９の流通速度
は大きくないので、オリフィス板５による流通抵抗は小
さく、封水９となったドレンは支障なく流出する。Therefore, in the water-sealed drainage pipe device according to the present invention, as shown in FIG. 1, the orifice plate 5 is provided in the water-sealed U-shaped pipe 2 below the connection port of the overflow pipe 3. In FIG. 2, when the pressure in the gas pipe 1 through which the fuel gas or the like flows becomes abnormally high, the sealing water 9 is pushed by the pressure and tries to suddenly flow out through the overflow pipe 3. At the location of the orifice plate 5 shown in (4), the orifice plate 5 must pass through the orifice hole 5h and the peripheral clearance 5c, so that the flow resistance of the orifice plate 5 suppresses the rapid flow velocity of the sealing water 9 and the sealing water 9 flows out. Takes some time. The time during which the gas pressure in the gas pipe 1 rises abnormally when the prime mover trips or the load is cut off is about 1 second, so there is no abnormal rise in pressure within that time, and all the sealing water 9 should flow out. Is prevented, and gas ejection is prevented. Further, if the rise in pressure in the gas pipe 1 is within a predetermined normal level, the flow speed of the sealing water 9 is not high, so the flow resistance by the orifice plate 5 is small, and the drainage of the sealing water 9 does not hinder. leak.
【００１３】[0013]
【実施例】図１において、オリフィス板５は厚さ１０ｍ
ｍの鋼板を用い、オリフィス穴５ｈは１０ｍｍの径とし
て製作して装着し、好結果を得た。EXAMPLE In FIG. 1, the orifice plate 5 has a thickness of 10 m.
An orifice hole 5h having a diameter of 10 mm was manufactured and attached using a steel plate of m, and good results were obtained.
【００１４】なお、図１に示すオリフィス板５は封水９
の急速な流動を阻止する機能を有すればよく、適当な形
状の流通抵抗体を設けてもよい。The orifice plate 5 shown in FIG.
It suffices that it has a function of preventing the rapid flow of the fluid, and a flow resistance element having an appropriate shape may be provided.
【００１５】[0015]
【発明の効果】以上のように、この発明によれば、水封
Ｕ字管内に流通抵抗体又はオリフィス板を設けたので、
ガス配管内のガス圧力が一時的に異常上昇した時も封水
の急速流動を阻止し、燃料ガスの噴出を防止することが
できる。As described above, according to the present invention, since the flow resistance body or the orifice plate is provided in the water-sealed U-shaped pipe,
Even when the gas pressure in the gas pipe temporarily rises abnormally, it is possible to prevent the rapid flow of sealing water and prevent the fuel gas from being jetted.
【図１】この発明による水封排水管装置の実施の一形態
を示す要部斜視図である。FIG. 1 is a perspective view of essential parts showing an embodiment of a water-sealed drainage pipe device according to the present invention.
【図２】従来の水封排水管装置の模式図である。FIG. 2 is a schematic diagram of a conventional water-sealed drainage pipe device.
１：ガス配管、 ２：水封Ｕ字管、３：オーバフロー
管、 ４：支柱、５：オリフィス板、 ６：蓋、７：ド
レン受け、 ９：封水。1: Gas pipe, 2: Water-sealed U-shaped pipe, 3: Overflow pipe, 4: Strut, 5: Orifice plate, 6: Lid, 7: Drain receiver, 9: Sealed water.
Claims (1)
た水封Ｕ字管内のオーバフロー管の接続口より下方の箇
所に封水の急速な通過を阻止する流通抵抗体又はオリフ
ィス板を設けたことを特徴とする水封排水管装置。1. A flow resistor or orifice plate for preventing rapid passage of sealing water is provided at a position below a connection port of an overflow pipe in a water-sealed U-shaped pipe connected to a pipe through which fuel gas or the like flows. A water-sealed drainage pipe device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22274695A JPH0953735A (en) | 1995-08-09 | 1995-08-09 | Water sealing drain pipe device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22274695A JPH0953735A (en) | 1995-08-09 | 1995-08-09 | Water sealing drain pipe device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0953735A true JPH0953735A (en) | 1997-02-25 |
Family
ID=16787264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22274695A Withdrawn JPH0953735A (en) | 1995-08-09 | 1995-08-09 | Water sealing drain pipe device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0953735A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000342244A (en) * | 1999-06-08 | 2000-12-12 | Nagata Jozo Kikai Kk | Drainage and cleaning apparatus for grain-processing conveyor equipment |
| JP2016105380A (en) * | 2014-12-01 | 2016-06-09 | 株式会社豊田自動織機 | Fuel cell type industrial vehicle |
| CN105972263A (en) * | 2016-07-15 | 2016-09-28 | 洛阳德正废弃资源再利用有限公司 | Waste oil recovery and distillation retort front water sealing device capable of achieving isolation |
| CN107893910A (en) * | 2017-12-20 | 2018-04-10 | 江汉大学 | A kind of water trap for gas piping |
-
1995
- 1995-08-09 JP JP22274695A patent/JPH0953735A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000342244A (en) * | 1999-06-08 | 2000-12-12 | Nagata Jozo Kikai Kk | Drainage and cleaning apparatus for grain-processing conveyor equipment |
| JP2016105380A (en) * | 2014-12-01 | 2016-06-09 | 株式会社豊田自動織機 | Fuel cell type industrial vehicle |
| CN105972263A (en) * | 2016-07-15 | 2016-09-28 | 洛阳德正废弃资源再利用有限公司 | Waste oil recovery and distillation retort front water sealing device capable of achieving isolation |
| CN107893910A (en) * | 2017-12-20 | 2018-04-10 | 江汉大学 | A kind of water trap for gas piping |
| CN107893910B (en) * | 2017-12-20 | 2024-01-05 | 江汉大学 | Drainer for gas pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021105 |