JP2979144B1 - Pipe channel air elimination device - Google Patents
Pipe channel air elimination deviceInfo
- Publication number
- JP2979144B1 JP2979144B1 JP27019698A JP27019698A JP2979144B1 JP 2979144 B1 JP2979144 B1 JP 2979144B1 JP 27019698 A JP27019698 A JP 27019698A JP 27019698 A JP27019698 A JP 27019698A JP 2979144 B1 JP2979144 B1 JP 2979144B1
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- Prior art keywords
- pipe
- air
- diameter
- tank
- water tank
- Prior art date
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Abstract
【要約】
【課題】 流入水槽から連行される空気を効率よく排除
するとともに、通気装置のコンパクト化、流入水槽との
一体構造化を図る。
【解決手段】 上部が開放し管水路の本管１３に接続さ
れる空気集積槽１２と、流入水槽１０と空気集積槽１２
とを接続する接続管１１とを備える。空気集積槽１２及
び接続管１１は本管１３の１．９〜２．１倍の直径を有
し、流入水槽１０と接続管１１との接続部から空気集積
槽１２の下流壁までの距離は本管１３の直径の４倍以上
とする。An object of the present invention is to efficiently remove air entrained from an inflow water tank, to reduce the size of the ventilation device, and to achieve an integral structure with the inflow water tank. SOLUTION: An air collecting tank 12 whose upper part is open and connected to a main pipe 13 of a pipe waterway, an inflow water tank 10, and an air collecting tank 12 are provided.
And a connection pipe 11 for connecting The air collecting tank 12 and the connecting pipe 11 have a diameter of 1.9 to 2.1 times the diameter of the main pipe 13, and the distance from the connection between the inflow water tank 10 and the connecting pipe 11 to the downstream wall of the air collecting tank 12 is The diameter of the main pipe 13 is four times or more.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、農業用水、上下水
道、工業用水等の管水路に混入・連行される空気を排除
する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing air mixed in or carried into a pipe waterway such as agricultural water, water supply and sewerage, and industrial water.
【０００２】[0002]
【従来の技術】パイプラインでは、管路内に混入・連行
された空気の滞留量が多くなると、流れを阻害するだけ
ではなく、サージングやエアハンマーを生じさせて送配
水施設に悪影響を及ぼすおそれがある。一般に、取水施
設やスタンド形分水工、調整施設等の自由水面を持つパ
イプライン系では、落下水脈によって空気が連行され、
気泡となって管水路内に混入するため、空気除去用の通
気装置が設けられている。2. Description of the Related Art In a pipeline, if a large amount of air is trapped or entrained in a pipeline, it not only obstructs the flow but also causes surging and an air hammer, which may adversely affect a water transmission and distribution facility. There is. In general, in pipeline systems having free water surfaces such as intake facilities, stand-type diversion works, and adjustment facilities, air is entrained by falling water veins,
A ventilator for removing air is provided in order to form bubbles and mix in the pipe channel.
【０００３】農林水産省構造改善局監修の土地改良事業
計画設計基準・設計「パイプライン」基準書・技術書
（1998）（以下、設計基準という）では、配水槽あるい
はスタンドから管水路へ流入する流入口の下流側では、
空気混入及び流れの収縮によって局部的な圧力低下を生
じやすいので、空気を排除する装置を設ける必要があ
り、通気孔が一般に使用されるとしている。According to the land improvement project plan design standard / design “pipeline” standard / technical book (1998) (hereinafter referred to as design standard) supervised by the Ministry of Agriculture, Forestry and Fisheries Structural Improvement Bureau, the water flows into the pipeline from a water distribution tank or stand. Downstream of the inlet,
Since local pressure drop is likely to occur due to aeration and contraction of the flow, it is necessary to provide a device for removing air, and a vent is generally used.
【０００４】図３は、設計基準に記載されている通気孔
の設置例を示すものである。流入水槽３０への流水によ
って気泡が発生する。流入水槽３０から流れに混入・連
行された空気を排除するために、直径Ｄの管水路３１の
途中に通気孔３２が設置される。設計基準によると、通
気孔３２の口径は通常、直径５０〜２００ｍｍの範囲で
あり、縮流部の射流水深ｈは通常ｈ＝０．６１Ｈで求
め、流入水槽３０と管水路３１との接続部から通気孔３
２までの距離Ｌを７〜１０Ｄ離す必要があるとしてい
る。FIG. 3 shows an example of the installation of the ventilation holes described in the design standards. Bubbles are generated by flowing water into the inflow water tank 30. A vent hole 32 is provided in the middle of a pipe D having a diameter D in order to remove air mixed in and carried into the flow from the inflow water tank 30. According to the design standard, the diameter of the vent hole 32 is usually in the range of 50 to 200 mm in diameter, and the discharge water depth h of the contraction part is usually obtained as h = 0.61H. The connection part between the inflow water tank 30 and the pipe waterway 31 is determined. From vent 3
It is stated that the distance L to 2 needs to be separated by 7 to 10D.
【０００５】また、設計基準では、通気スタンドは、水
撃圧緩和の役割を兼用させるため大容量の吸排気能力を
もたせる必要がある場合に、減圧調整、監査孔等の役割
を兼用させることが多いとしている。通気スタンドに
は、管路と同径のＴ字管を使用して立上り管に遠心力鉄
筋コンクリート等を用いた「ストレートベント型スタン
ド」や、内寸法が管路の通水断面と同等以上の鉄筋コン
クリートのボックススタンドを設けた「ボックスベント
型スタンド」などがあるとしている。[0005] According to the design standard, the ventilation stand is also required to have a large capacity of intake / exhaust capacity in order to have a function of alleviating the water hammer pressure. It is said that there are many. For the ventilation stand, use a T-shaped pipe with the same diameter as the pipeline, a "straight vent type stand" using centrifugal reinforced concrete or the like for the riser, or a reinforced concrete with an internal size equal to or greater than the water cross section of the pipeline It is said that there is a "box vent type stand" equipped with a box stand.
【０００６】[0006]
【発明が解決しようとする課題】図３に示した通気孔装
置に関し、管水路３１の直径をＤ＝１００ｍｍ、流入水
槽３０と管水路３１との接続部（管水路呑口）から通気
孔３２までの距離ＬをＬ＝９００ｍｍ（９Ｄ）とした装
置で実験を行った。その結果、管水路３１の呑口部から
流入した空気混入水は縮流し、管水路呑口に空間３３が
できている。流入水槽３０で流れの中に混入した空気の
一部は、通気孔３２の下流に混入することがあった。ま
た、管水路３１内の流れが変動して脈動状態となってお
り、通気孔３２から水が噴出されることがあった。In the vent apparatus shown in FIG. 3, the diameter of the pipe channel 31 is D = 100 mm, and the diameter of the pipe channel 31 is from the connecting portion between the inflow water tank 30 and the pipe channel 31 (the pipe channel inlet) to the vent hole 32. The experiment was conducted using an apparatus in which the distance L of L was 900 mm (9D). As a result, the aerated water flowing in from the mouth portion of the pipe channel 31 is contracted, and a space 33 is formed at the mouth of the channel channel. A part of the air mixed in the flow in the inflow water tank 30 was sometimes mixed downstream of the vent hole 32. In addition, the flow in the pipe channel 31 fluctuates and is in a pulsating state, and water may be ejected from the vent hole 32.
【０００７】また、通気スタンドの応用装置として、図
４のように、流入水槽４０と接続管４１で接続される通
気スタンド４２の直径を管水路４３の直径より大きく
し、大気に接する面積を増やして、流れに混入した空気
を浮上しやすくさせた改良型の通気スタンドを試作し
た。管水路４３の直径をＤ＝１００ｍｍ、流入水槽４０
と接続管４１との接続部から通気スタンド４２下流壁ま
での距離をＬ＝８００ｍｍ（８Ｄ）、通気スタンド４２
の開口部を流入水槽４０と同一の直径３００ｍｍ（３
Ｄ）とした。その結果、流入水槽４０と接続管４１との
接続部付近に発生する縮流は、通気孔装置の場合より規
模が小さくなったものの、流れに混入した空気の一部が
通気スタンド４２を通過して、さらに下流へ混入するこ
とがあることが判明した。As an application device of the ventilation stand, as shown in FIG. 4, the diameter of the ventilation stand 42 connected to the inflow water tank 40 and the connection pipe 41 is made larger than the diameter of the pipe water passage 43 to increase the area in contact with the atmosphere. Thus, a prototype of an improved ventilation stand that made it easier for air mixed in the flow to float was manufactured. The diameter of the pipe channel 43 is D = 100 mm, and the inflow water tank 40
L = 800 mm (8D), the distance from the connection portion between the pipe and the connecting pipe 41 to the downstream wall of the ventilation stand 42,
Of the same diameter as the inflow water tank 40 with a diameter of 300 mm (3
D). As a result, although the contraction generated near the connection between the inflow water tank 40 and the connection pipe 41 is smaller in size than in the case of the vent hole device, part of the air mixed in the flow passes through the ventilation stand 42. Therefore, it was found that they could be mixed further downstream.
【０００８】このように、従来の通気装置では、通気装
置から下流へとさらに空気が混入することがある。更
に、通気孔を用いる場合には通気孔は管水路呑口から７
Ｄ以上離して設置され、また、通気スタンドを用いる場
合には管水路呑口から通気スタンド下流壁まで８Ｄ程度
の距離があり、通気装置が大型になるという問題があっ
た。本発明は、このような従来技術の問題点に鑑みてな
されたもので、流入水槽から連行される空気を効率よく
排除するとともに、通気装置の設置位置をできる限り水
槽に近づけて、通気装置のコンパクト化、流入水槽との
一体構造化を図り、工期短縮等による経費削減を図るこ
とのできる空気排除装置を提供することを目的とする。[0008] As described above, in the conventional ventilation device, air may be further mixed downstream from the ventilation device. In addition, if a vent is used, the vent must be 7
When the ventilation stand is used and the ventilation stand is used, there is a problem that there is a distance of about 8D from the pipe channel mouth to the downstream wall of the ventilation stand, and the ventilation device becomes large. The present invention has been made in view of such problems of the related art, and efficiently eliminates air entrained from the inflow water tank, and sets the installation position of the ventilation device as close as possible to the water tank, thereby improving the ventilation device. It is an object of the present invention to provide an air elimination device that can be made compact, integrated with an inflow water tank, and can reduce costs by shortening the construction period.
【０００９】[0009]
【課題を解決するための手段】図４に示す通気スタンド
を改良した装置では、通気スタンドを素通りして下流へ
混入する空気があった。そこで、図５に示す連行空気排
除装置を試作した。この連行空気排除装置は、空気を集
積して排除する空気集積槽５２を設置するとともに、流
入水槽５０と空気集積槽５２を接続する接続管５１の直
径を管水路５３の直径の２倍に大きくして流速を遅く
し、空気の浮上速度を速めることを狙ったものである。
管水路５３の直径をＤ＝１００ｍｍとし、接続管の直径
を２Ｄ（２００ｍｍ）、流入水槽５０と接続管５１との
接続部から空気集積槽５２下流壁までの距離ＬをＬ＝８
００ｍｍ（８Ｄ）、空気集積槽５２の開放部を流入水槽
５０と同一の直径３００ｍｍ（３Ｄ）とした。In the apparatus in which the ventilation stand is improved as shown in FIG. 4, there is air that passes through the ventilation stand and enters downstream. Then, the entrained air elimination device shown in FIG. 5 was prototyped. In this entrained air elimination device, an air accumulation tank 52 for accumulating and eliminating air is installed, and the diameter of a connecting pipe 51 connecting the inflow water tank 50 and the air accumulation tank 52 is twice as large as the diameter of the pipe channel 53. The purpose is to reduce the flow velocity and increase the levitation speed of the air.
The diameter of the pipe channel 53 is D = 100 mm, the diameter of the connecting pipe is 2D (200 mm), and the distance L from the connection between the inflow water tank 50 and the connecting pipe 51 to the downstream wall of the air collecting tank 52 is L = 8.
The diameter of the open portion of the air collecting tank 52 was set to 300 mm (3D), which is the same as that of the inflow water tank 50.
【００１０】その結果、流入水槽５０で流れの中に混入
して連行された空気は、そのほぼ全量を空気集積槽５２
において効率よく排除することができ、縮流による空隙
の発生はなかった。しかし、流入水槽５０と接続管５１
との接続部から空気集積槽下流壁まで８Ｄ程度の距離が
あり、通気装置のコンパクト化の点では不満足なもので
あった。As a result, almost all of the entrained air entrained in the flow in the inflow water tank 50 is taken up by the air accumulation tank 52.
In this case, no air gap was generated due to the contraction. However, the inflow water tank 50 and the connecting pipe 51
There was a distance of about 8D from the connection portion to the downstream wall of the air accumulation tank, which was unsatisfactory in terms of making the ventilation device compact.
【００１１】次に、図６に示すように、流入水槽６０と
空気集積槽６２を接続する接続管６１の直径を管水路６
３の本管の１．５倍とした連行空気排除装置を試作し
た。管水路６３の直径をＤ＝１００ｍｍとし、接続管６
１の直径は１．５Ｄ（１５０ｍｍ）、流入水槽６０と接
続管６１との接続部から空気集積槽６２下流壁までの距
離ＬはＬ＝５００ｍｍ（５Ｄ）、空気集積槽６２の開放
部は流入水槽６０と同一の直径２００ｍｍ（２Ｄ）とし
た。Next, as shown in FIG. 6, the diameter of the connecting pipe 61 connecting the inflow water tank 60 and the air collecting tank 62 is determined by the pipe waterway 6.
A prototype of the entrained air elimination device 1.5 times as large as the main tube of No. 3 was manufactured. The diameter of the pipe channel 63 is D = 100 mm, and the connecting pipe 6
1 has a diameter of 1.5D (150 mm), the distance L from the connection between the inflow water tank 60 and the connection pipe 61 to the downstream wall of the air accumulation tank 62 is L = 500 mm (5D), and the open part of the air accumulation tank 62 has an inflow. The diameter was 200 mm (2D), the same as the water tank 60.
【００１２】その結果、縮流による空隙は発生しないも
のの、流入水槽６０内の水深が浅いと、空気集積槽６２
で排除されなかった一部の空気が、さらに下流の管水路
６３に混入することがあった。このように、接続管６１
の直径を管水路６３の１．５倍にしても、流入水槽６０
と接続管６１との接続部から空気集積槽６２下流壁まで
Ｌ＝５Ｄ程度の距離が必要である。As a result, although no void is generated due to the contraction, if the water depth in the inflow water tank 60 is shallow, the air accumulation tank 62
In some cases, some of the air that was not removed in the above was mixed into the pipe channel 63 further downstream. Thus, the connection pipe 61
Of the inflow water tank 60 even if the diameter of the
A distance of about L = 5D is required from the connection portion between the connection pipe 61 and the downstream wall of the air accumulation tank 62.
【００１３】本発明は、このような実験の積み重ねの上
に完成されたものであり、流入水槽から管水路内に連行
される空気を排除する管水路の連行空気排除装置におい
て、管水路の本管に接続される上部が開放した空気集積
槽と、流入水槽と空気集積槽とを接続する接続管とを備
え、空気集積槽及び接続管は本管の１．９〜２．１倍の
直径を有し、流入水槽と接続管との接続部から空気集積
槽の下流壁までの距離は本管の直径の４倍以上であるこ
とを特徴とする。空気集積槽及び接続管は既製のＴ字管
を加工して製作することができる。[0013] The present invention has been completed on the basis of the above-described experiments, and is an apparatus for removing air entrained from an inflow water tank into a pipe waterway. An air collecting tank having an open top connected to the pipe, and a connecting pipe connecting the inflow water tank and the air collecting tank are provided, and the air collecting tank and the connecting pipe have a diameter of 1.9 to 2.1 times the main pipe. And the distance from the connection between the inflow water tank and the connection pipe to the downstream wall of the air accumulation tank is at least four times the diameter of the main pipe. The air collecting tank and the connecting pipe can be manufactured by processing a ready-made T-shaped pipe.
【００１４】本発明によると、流入水槽と空気集積槽を
接続する接続管の直径を管水路本管の約２倍に太くして
流速を遅くし、空気を浮上しやすくして流れに混入した
空気を効率よく排除することができる。同時に、空気集
積槽の開口部と接続管の直径を同一とし、しかも従来よ
り短くすることで、既製のＴ字管を用いて流入水槽、接
続管、空気集積槽の一体化、構造の簡略化を図ることが
できる。According to the present invention, the diameter of the connecting pipe connecting the inflow water tank and the air collecting tank is made about twice as large as that of the main pipe, the flow velocity is reduced, the air is easily floated, and the air is mixed into the flow. Air can be removed efficiently. At the same time, by making the diameter of the opening of the air collecting tank and the diameter of the connecting pipe the same, and making it shorter than before, the inflow water tank, connecting pipe, and the air collecting tank are integrated using a ready-made T-tube, and the structure is simplified. Can be achieved.
【００１５】[0015]
【発明の実施の形態】以下、図面を参照して本発明の実
施の形態を説明する。図１は、本発明による管水路の連
行空気排除装置の一例を示す概略図である。流入水槽１
０と空気集積槽１２とは接続管１１で接続されている。
管水路１３の直径をＤとするとき、空気集積槽１２と接
続管１１は同じ直径２Ｄを有する。空気集積槽１２と接
続管１１の直径２Ｄは、管水路１３の直径Ｄにのみ依存
し、流入水槽１０の直径には依存しない。流れが流入水
槽１０に入るとき気泡が発生するが、空気を混入・連行
する流れは管水路１３の２倍の直径を有する接続管１１
中で流速が遅くなり、連行された空気は浮上しやすくな
る。こうして浮上した空気は空気集積槽１２で排除さ
れ、空気集積槽に接続された管水路１３には空気を含ま
ない流れが流入する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing an example of an entrained air removing device for a pipe waterway according to the present invention. Inflow water tank 1
0 and the air accumulation tank 12 are connected by a connection pipe 11.
Assuming that the diameter of the pipe channel 13 is D, the air accumulation tank 12 and the connecting pipe 11 have the same diameter 2D. The diameter 2D of the air accumulation tank 12 and the connecting pipe 11 depends only on the diameter D of the pipe channel 13 and does not depend on the diameter of the inflow water tank 10. When the flow enters the inflow water tank 10, air bubbles are generated. However, the air entrained and entrained flow has a connecting pipe 11 having a diameter twice as large as that of the pipe channel 13.
The flow velocity in the inside becomes slow, and the entrained air becomes easy to float. The air thus floated is removed by the air collecting tank 12, and a flow containing no air flows into the pipe channel 13 connected to the air collecting tank.
【００１６】図２は、既製のＴ字管を用いて本発明の空
気排除装置を製作する方法を説明する図である。図示す
るように、直径２Ｄの既製Ｔ字管２０の背面に直径Ｄの
管水路２２を接続するための開口２１を加工し、底面に
蓋２３をして立上がり管２４を接続するだけで、空気排
除装置を製作することができるため、従来の空気排除装
置に比較して加工・据付けが極めて簡単である。FIG. 2 is a view for explaining a method of manufacturing the air elimination apparatus of the present invention using a ready-made T-tube. As shown in the figure, an opening 21 for connecting a pipe waterway 22 having a diameter D is formed on the back of a ready-made T-tube 20 having a diameter 2D, and a lid 23 is provided on the bottom surface and a rising pipe 24 is connected. Since the elimination device can be manufactured, processing and installation are extremely simple as compared with the conventional air elimination device.
【００１７】図１において、管水路１３の直径をＤ＝１
００ｍｍ、空気集積槽１２の開口部と接続管１１の直径
を管水路１３の直径Ｄの２倍（２００ｍｍ）とした空気
排除装置を製作し、接続管１１の長さを変えて実験を行
った。その結果、流入水槽１０と接続管１１との接続部
から空気集積槽１２の下流壁までの距離がＬ＝５００ｍ
ｍ（５Ｄ）以上であると、混入空気のほぼ全量を効率よ
く排除することができた。また、流入水槽１０と接続管
１１との接続部から空気集積槽１２の下流壁までの距離
がＬ＝４００ｍｍ（４Ｄ）であると、ときおり管水路１
３に気泡粒が混入することがあったが、管水路１３内の
流水に影響を及ぼすものではなかった。Ｌ＝４００ｍｍ
（４Ｄ）以上の時、管水路１３の水頭高は安定してお
り、流れに大きな変動は見受けられなかった。なお、こ
こでは空気集積槽１２と接続管１１の直径を管水路１３
の直径Ｄの２倍（２Ｄ）として説明したが、空気集積槽
１２と接続管１１の直径は正確に２Ｄである必要はな
く、１．９Ｄ〜２．１Ｄの範囲内にあれば同様の効果が
得られる。In FIG. 1, the diameter of the pipe channel 13 is D = 1.
An air exclusion device was manufactured in which the diameter of the opening of the air collecting tank 12 and the diameter of the connection pipe 11 was twice (200 mm) the diameter D of the pipe channel 13, and the experiment was performed by changing the length of the connection pipe 11. . As a result, the distance from the connection between the inflow water tank 10 and the connection pipe 11 to the downstream wall of the air accumulation tank 12 is L = 500 m.
When it is at least m (5D), almost all of the mixed air could be efficiently removed. If the distance from the connection between the inflow water tank 10 and the connection pipe 11 to the downstream wall of the air accumulation tank 12 is L = 400 mm (4D), the pipe waterway 1 is sometimes
In some cases, air bubble particles were mixed in No. 3, but this did not affect the flowing water in the pipe channel 13. L = 400mm
(4D) At the time above, the head height of the pipe channel 13 was stable, and no large fluctuation was found in the flow. Here, the diameter of the air collecting tank 12 and the connecting pipe 11 is
However, the diameter of the air accumulation tank 12 and the connecting pipe 11 does not need to be exactly 2D, and the same effect can be obtained if the diameter is in the range of 1.9D to 2.1D. Is obtained.
【００１８】このように、本発明の連行空気排除装置に
よると、流れの中に縮流による空隙が発生せず、混入し
た空気のほぼ全量を空気集積槽１２で効率よく排除する
ことができる。流入水槽１０と接続管１１との接続部か
ら空気集積槽１２の下流壁までの距離Ｌは、本管直径の
４倍以上であればよい。また、図２にて説明したよう
に、本発明によると、空気集積槽開口部と接続管の直径
が同一であるため、既製のＴ字管を利用して空気集積槽
と接続管を一体に製作できる。そして、空気集積槽が分
水工に隣接しているため、分水工施設と一体構造物とし
てコンパクトな設計・施工ができる。As described above, according to the entrained air removing device of the present invention, no air gap is generated in the flow due to the contraction, and almost all the mixed air can be efficiently removed in the air collecting tank 12. The distance L from the connection between the inflow water tank 10 and the connection pipe 11 to the downstream wall of the air accumulation tank 12 may be at least four times the main pipe diameter. Further, as described in FIG. 2, according to the present invention, since the opening of the air collecting tank and the diameter of the connecting pipe are the same, the air collecting tank and the connecting pipe are integrally formed using a ready-made T-shaped pipe. Can be manufactured. Further, since the air collecting tank is adjacent to the water diversion works, compact design and construction can be performed as an integral structure with the water diversion works.
【００１９】[0019]
【発明の効果】本発明によると、流入水槽と空気集積槽
を接続する接続管の管内において、流れの中に混入・連
行した気泡は管頂上に浮上しながら大きな空気のかたま
りとなり、空気集積槽においてほぼ全量を効率よく排除
することができる。装置製作上の観点からは、空気集積
槽を流入水槽に隣接して設置できるためコンパクトにな
り、水槽と一体構造として設計・施工ができる。また、
空気集積槽と接続管の直径が同一のため、既製のＴ字管
を加工することで空気排除装置の製作が可能であり、工
期も短縮されて経費削減が期待される。According to the present invention, in the pipe of the connecting pipe connecting the inflow water tank and the air collecting tank, the air bubbles mixed and entrained in the flow form a large air mass while floating on the top of the pipe. , It is possible to efficiently remove almost all the amount. From the point of view of device production, the air collecting tank can be installed adjacent to the inflow water tank, so that it is compact and can be designed and constructed as an integral structure with the water tank. Also,
Since the diameter of the air accumulation tank and the diameter of the connection pipe are the same, it is possible to manufacture an air elimination apparatus by processing a ready-made T-shaped pipe, and it is expected that the construction period will be shortened and the cost will be reduced.
【図１】本発明による管水路の連行空気排除装置の一例
を示す概略図。FIG. 1 is a schematic view showing an example of a device for removing air entrained in a pipe waterway according to the present invention.
【図２】既製のＴ字管を用いて連行空気排除装置を製作
する方法を説明する図。FIG. 2 is a diagram illustrating a method of manufacturing an entrained air removing device using a ready-made T-tube.
【図３】従来の通気孔を用いた連行空気排除装置の概略
図。FIG. 3 is a schematic view of a conventional entrained air elimination device using a vent.
【図４】通気スタンドを改良した試作装置の概略図。FIG. 4 is a schematic view of a prototype device with an improved ventilation stand.
【図５】連行空気排除装置の試作装置の概略図。FIG. 5 is a schematic diagram of a prototype device of the entrained air removing device.
【図６】他の連行空気排除装置の試作装置の概略図。FIG. 6 is a schematic diagram of another prototype of the entrained air removing device.
１０…流入水槽 １１…接続管 １２…空気集積槽 １３…管水路 ２０…既製Ｔ字管 ２１…開口 ２２…管水路 ２３…蓋 ２４…立ち上がり管 ３０…流入水槽 ３１…管水路 ３２…通気孔 ３３…空間通気 ４０…流入水槽 ４１…接続管 ４２…通気スタンド ４３…管水路 ５０…流入水槽 ５１…接続管 ５２…空気集積槽 ５３…管水路 ６０…流入水槽 ６１…接続管 ６２…空気集積槽 ６３…管水路 DESCRIPTION OF SYMBOLS 10 ... Inflow water tank 11 ... Connection pipe 12 ... Air accumulation tank 13 ... Pipe waterway 20 ... Ready-made T-shaped pipe 21 ... Opening 22 ... Pipe waterway 23 ... Lid 24 ... Rise pipe 30 ... Inflow water tank 31 ... Pipe waterway 32 ... Vent hole 33 ... space ventilation 40 ... inflow water tank 41 ... connection pipe 42 ... ventilation stand 43 ... pipe waterway 50 ... inflow water tank 51 ... connection pipe 52 ... air accumulation tank 53 ... pipe waterway 60 ... inflow water tank 61 ... connection pipe 62 ... air accumulation tank 63 … Pipe canal
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) E03C 1/122 E03B 7/07 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) E03C 1/122 E03B 7/07
Claims (2)
混入・連行された空気を排除する管水路の空気排除装置
において、管水路の本管に接続される上部が開放した空
気集積槽と、前記流入水槽と前記空気集積槽とを接続す
る接続管とを備え、前記空気集積槽及び前記接続管は前
記本管の１．９〜２．１倍の直径を有し、前記流入水槽
と前記接続管との接続部から前記空気集積槽の下流壁ま
での距離は前記本管の直径の４倍以上であることを特徴
とする管水路の空気排除装置。1. A pipe channel air elimination device for removing air mixed and entrained into a pipe channel from an inflow water tank having a free water surface, the air collecting tank having an open upper portion connected to a main pipe of the pipe channel. A connection pipe connecting the inflow water tank and the air accumulation tank, wherein the air accumulation tank and the connection pipe have a diameter of 1.9 to 2.1 times the main pipe, and The distance from the connection part with the said connection pipe to the downstream wall of the said air accumulation tank is 4 times or more of the diameter of the said main pipe, The air exclusion apparatus of the pipe channel characterized by the above-mentioned.
Ｔ字管を加工して製作されていることを特徴とする請求
項１記載の管水路の空気排除装置。2. The air drainage device according to claim 1, wherein the air collecting tank and the connection pipe are manufactured by processing a ready-made T-shaped pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27019698A JP2979144B1 (en) | 1998-09-24 | 1998-09-24 | Pipe channel air elimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27019698A JP2979144B1 (en) | 1998-09-24 | 1998-09-24 | Pipe channel air elimination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2979144B1 true JP2979144B1 (en) | 1999-11-15 |
| JP2000096647A JP2000096647A (en) | 2000-04-04 |
Family
ID=17482875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27019698A Expired - Lifetime JP2979144B1 (en) | 1998-09-24 | 1998-09-24 | Pipe channel air elimination device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2979144B1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2368910B (en) * | 2000-06-02 | 2003-04-09 | Dunstan Dunstan | Anti-gravitational force engine |
| CN103015496B (en) * | 2012-12-18 | 2015-05-06 | 王凤蕊 | Special connector for ventilation of high-rise building |
| CN107335255B (en) * | 2017-08-18 | 2022-10-14 | 河北科瑞达仪器科技股份有限公司 | Water route bubble remove device |
-
1998
- 1998-09-24 JP JP27019698A patent/JP2979144B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000096647A (en) | 2000-04-04 |
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