JP4308389B2

JP4308389B2 - Plumbing equipment for water supply equipment

Info

Publication number: JP4308389B2
Application number: JP34966599A
Authority: JP
Inventors: 正樹坂本
Original assignee: Teral Inc
Current assignee: Teral Inc
Priority date: 1999-12-09
Filing date: 1999-12-09
Publication date: 2009-08-05
Anticipated expiration: 2019-12-09
Also published as: JP2001164606A

Description

【０００１】
【発明の属する技術分野】
この発明は、給水装置の配管装置において、制御弁を含む配管装置とポンプとの接続に関する。
【０００２】
【従来の技術】
従来、商業建造物、集合住宅等上水を大量に消費する需要先において、上水道配水管から直接、または小形ポンプで昇圧して需要先に送る直結給水ブースタポンプ式給水装置が普及している。この場合、供給先の水が配水管に逆流することを確実に防止するために、ポンプの吸込側または吐出側に、第1及び第2逆支弁、逃がし弁の組合せからなる逆流防止器を設けることが義務付けられている。このような給水装置の配管において、ポンプの故障等による給水停止を招かないように、複数のポンプを並列に配置することが普通になっている。このような給水装置は、新鮮な水を需要先に送れると共に、配水管内の圧力を有効に利用できるのでポンプの動力を節約でき、また、夜間使用水量の少ない時には、ポンプを停止させ、配水管の水圧を利用して、配水管の水を直接需要先に送るようにしており、省エネルギーに貢献している。
【０００３】
【発明が解決しようとする課題】
このような給水装置において、各ポンプへの吸込及び吐出のための制御弁、逆流防止器及び圧力タンクを、上水道配水管と需要先への配水管との間でどのように配置するかが、特に狭い屋内叉は地下室でのスペースの節約に影響する。また、必要に応じてポンプを配管装置から、取外し叉は再配置する必要があり、その場合配管とポンプとの接続叉は配管からのポンプの取外しを容易に行なえるかどうかが、給水装置の配管上の課題となっている。
【０００４】
【課題を解決するための手段】
この発明は、ポンプの吸込口に連結される三方向弁の列と、ポンプの吐出口に連結される三方向弁の列とを同一平面上に平行して配列し、同一ポンプの吸込口側及び吐出口側の三方向弁は同一ハンドルの操作によって同時に弁の切替えを行うように同一軸によって夫々同時に回転可能とし、吸込側三方向弁の列及び吐出側三方向弁の列は夫々連通管によって連通させるとともに、吸込側三方向弁の列の連通管と吐出側三方向弁の列の連通管との間を、吸込側から吐出側のみ流通する逆止弁を設けた架橋管によって連結し、これら連通管、逆止弁付き架橋管等で結ばれた吸込側三方向弁の列及び吐出側三方向弁の列を1ユニットとして、このユニット上に複数のポンプを連結するようにした給水装置の配管装置において、各ポンプの吸込口と吐出口とは同一平面上で、夫々の三方向弁配管ユニットの上端部の吸込口側開口と吐出口側開口とに接続されるようにしたことを特徴とする。
【０００５】
各ポンプの吸込口と吐出口とは同一平面上で、夫々の面上に設けたＯリング溝及びＯリングを介して夫々の三方向弁の上端部の吸込口側開口と吐出口側開口とに接続されるようにする。また、前記Ｏリングに代えて、各ポンプの吸込口と吐出口とは同一平面上で、夫々の面で挟むガスケットを介して夫々の三方向弁の上端部の吸込口側開口と吐出口側開口とに接続されるようにすることも出来る。このように構成した直結給水ブースターポンプ装置は、前記逆流防止器を経て前記吸込側三方向弁列の一端に上水道配水管が接続されると共に、吐出側三方向弁列の他端が需要先の配管接続口に連通している。この場合、圧力タンクは吐出側三方向弁列の一端に連通配置される。
【０００６】
このような直結給水ブースターポンプ装置を含む給水装置を設置する場所は、上水道配水管への接続口及び需要先の配管接続口が右叉は左側に来ることがありうる。また、逆流防止器は、上水道配水管の給水圧力が逆流防止器の抵抗に比べて高い場合には、ポンプの吸込口側配管の途中に設けて何ら問題は無いが、給水圧力が低い場合には、逆流防止器以降に水が流れないことも起こり得る。そのため、このような場合には、前記ユニットは吸込側三方向弁列の右端叉は左端を直接上水道配水管に接続し、吐出側三方向弁列の他端と需要先の配管接続口との間に逆流防止器を配置することになる。この場合、圧力タンクは吐出側三方向弁列の一端、或いは吐出側三方向弁列の一端と需要先配管接続口との間に配置される。
【０００７】
以上述べたように、直結給水ブースターポンプにおいて、各ポンプの吸込口と吐出口とは同一平面上で、夫々の三方向弁配管ユニットの上端部の吸込口側開口と吐出口側開口とに接続されるようにしたので、ポンプの故障等不都合が生じた場合に、点検,修理等のためにポンプの配管への取付け及び取り外しを迅速に行うことが出来る。
【０００８】
【発明の実施の態様】
この発明の1実施例として、2個のポンプを並列に配置する場合のユニット配列を図１に示す。ポンプ1及びポンプ２の各吸込口に連結される三方向弁３及び４の列と、ポンプ１及び２の吐出口に連結される三方向弁５及び６の列とを同一平面上に平行して配列し、同一ポンプの吸込口側及び吐出口側の三方向弁３及び５、４及び６は同一ハンドル７，８の操作によって同時に弁の切替えを行うように同一の回転軸９，１０によって夫々同時に回転し、弁の切替えを行うことが出来る。
【０００９】
吸込口側三方向弁３，４の列及び吐出口側三方向弁５，６の列は夫々連通管１１，１２によって連通させるとともに、吸込口側三方向弁の列の連通管１１と吐出口側三方向弁の列の連通管１２との間を、吸込口側から吐出口側のみ流通する逆止弁１３を設けた架橋管１４によって連結する。このようにして形成されたポンプ１及び２の配管ユニット１５の吸込口側三方向弁３の一端が、逆流防止器１６を経て上水道配水管の接続口１７に接続されると共に、吐出口側三方向弁６の他端が需要先の配管接続口１８に連通される。また、吐出口側三方向弁５の一端に圧力タンク１９を連通配置させることが出来る。
【００１０】
図2及び３に示すように、ポンプ２の吸込口２０は配管ユニット１５の吸込口側三方向弁４の上端部の吸込口側開口２１に接続されるとともに、ポンプ２の吐出口２２は配管ユニット１５の吐出側三方向弁６の上端部の吐出口側開口２３に接続され,夫々の接続面は同一平面２４上にある。このためポンプ２を配管ユニット１５に対して取付け,叉は配管ユニット１５から取り外す時には、ポンプ２の吸込口２０と吐出口２１とを同時に配管ユニット１５上に載置し、叉は配管ユニット１５から持上げ,ポンプ２を配管ユニット１５から取り外すことが出来る。この操作は、特に狭い空間内にポンプ装置を配置する場合、叉はキャビネット内にポンプ、配管ユニット、逆流防止器,圧力タンク等をセットにして組み込んだ場合に,狭いキャビネット内からポンプだけを取り外し交換するのに便利である。なお、以上の説明はポンプ１に関しても同様である。
【００１１】
ポンプ２の吸込口２０と、配管ユニット１５の吸込側三方向弁４の上端部の吸込口側開口２１の周りには、図２に示すように、通常型のＯリング溝２５が設けられ、ポンプを配管ユニットに接続する場合、Ｏリング２６を挿入する。このＯリングの代わりに、図３に示すようにポンプ吸込口と配管ユニットの吸込口側開口との間に,通常型のガスケット２７を敷設することも出来る。なお、以上の説明はポンプ２の吐出口、及びポンプ１に関しても同様である。
【００１２】
【発明の効果】
この発明は以上のように構成したので、上水道配水管及び需要先への配管の接続口の位置、配水管の給水圧力、需要先への給水圧力等の諸条件を考慮して、上水道配水管との接続口、需要先への配管の接続口、逆流防止器及び圧力タンクの接続部の位置を容易に変更できるので、最も適当な直結給水ブースタポンプの配管を行うことが出来る配管ユニットとポンプとの組合せを提供する。特に各ポンプの吸込口と吐出口とは同一平面上で、夫々の三方向弁配管ユニットの上端部の吸込口側開口と吐出口側開口とに接続されるので、現場での取付け作業が容易に行えるとともに、運転中はたとえ一個のポンプが故障しても、他のポンプでバックアップ運転を行い、その間、故障したポンプを取り外し修理叉は交換をすることが出来る。
【図面の簡単な説明】
【図１】この発明の三方向弁配管ユニットとポンプとを組合せた直結給水ブースタポンプの見取り図である。
【図２】ポンプ吸込口と配管ユニットの吸込口側開口との間にＯリング溝及びＯリングを配置した状態を示す部分断面図である。
【図３】ポンプ吸込口と配管ユニットの吸込口側開口との間にガスケットを敷設した状態を示す部分断面図である。
【符号の説明】
１ポンプ１
２ポンプ２
３ポンプ１の吸込口側の三方向弁
４ポンプ２の吸込口側の三方向弁
５ポンプ１の吐出口側の三方向弁
６ポンプ２の吐出口側の三方向弁
７ハンドル１
８ハンドル２
９回転軸１
１０回転軸２
１１、１２連結管
１３逆止弁
１４架橋管
１５配管ユニット
１６逆流防止器
１７上水道配水管への接続口
１８需要先への配管接続口
１９圧力タンク
２０吸込口
２１吸込口側開口
２２吐出口
２３吐出口側開口
２４平面
２５Ｏリング溝
２６Ｏリング
２７ガスケット[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection between a piping device including a control valve and a pump in a piping device of a water supply device.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, directly connected water booster pump type water supply devices that send pressure to a demand destination directly from a water supply pipe or with a small pump have been widespread in demand destinations that consume a large amount of water such as commercial buildings and apartment buildings. In this case, in order to reliably prevent the water at the supply destination from flowing back into the water distribution pipe, a backflow preventer comprising a combination of the first and second reverse support valves and the relief valve is provided on the suction side or discharge side of the pump. It is mandatory. In the piping of such a water supply apparatus, it is common to arrange a plurality of pumps in parallel so as not to stop water supply due to pump failure or the like. Such a water supply device can send fresh water to the customer, and can effectively use the pressure in the distribution pipe, so that the power of the pump can be saved, and when the amount of water used at night is low, the pump is stopped and the distribution pipe is By using the water pressure of the water, the water in the distribution pipe is sent directly to the customers, which contributes to energy saving.
[0003]
[Problems to be solved by the invention]
In such a water supply device, how to arrange the control valve, the backflow preventer and the pressure tank for suction and discharge to each pump between the water supply water pipe and the water pipe to the customer, In particular, a narrow indoor fork affects space saving in the basement. In addition, it is necessary to remove or relocate the pump from the piping system as necessary.In this case, whether the connection between the pipe and the pump or the pump from the piping can be easily removed depends on the water supply system. It is a problem on piping.
[0004]
[Means for Solving the Problems]
In this invention, the three-way valve row connected to the pump suction port and the three-way valve row connected to the pump discharge port are arranged in parallel on the same plane, and the same pump suction side The three-way valve on the discharge side and the three-way valve on the discharge side can be simultaneously rotated by the same shaft so that the valves can be switched simultaneously by operation of the same handle. In addition, the connection pipe of the suction side three-way valve row and the communication pipe of the discharge side three-way valve row are connected by a bridging pipe provided with a check valve that circulates only from the suction side to the discharge side. The suction side three-way valve row and the discharge side three-way valve row connected by these communication pipes, bridging pipes with check valves, etc., as a single unit, and a plurality of pumps connected on this unit In the piping system of the device, the suction port and discharge of each pump It is characterized in that it is connected to the suction port side opening and the discharge port side opening at the upper end portion of each three-way valve piping unit on the same plane.
[0005]
The suction port and the discharge port of each pump are on the same plane, and the suction port side opening and the discharge port side opening at the upper end portion of each three-way valve through an O-ring groove and an O-ring provided on each surface To be connected to. Further, in place of the O-ring, the suction port and the discharge port of each pump are on the same plane, and the suction port side opening and the discharge port side at the upper end of each three-way valve via gaskets sandwiched between the respective surfaces. It can also be connected to the opening. The directly connected water booster pump device configured as described above has a water supply water pipe connected to one end of the suction side three-way valve train through the backflow preventer, and the other end of the discharge side three-way valve train is a customer It communicates with the piping connection port. In this case, the pressure tank is communicated with one end of the discharge side three-way valve train.
[0006]
In a place where such a water supply device including a directly connected water supply booster pump device is installed, the connection port to the water supply water distribution pipe and the pipe connection port of the customer can come on the right or left side. In addition, if the water supply pressure of the water supply pipe is higher than the resistance of the backflow preventer, there is no problem with the backflow preventer provided in the middle of the pump suction pipe, but when the water supply pressure is low The water may not flow after the backflow preventer. Therefore, in such a case, the unit directly connects the right end or the left end of the suction side three-way valve train to the water supply pipe, and connects the other end of the discharge side three-way valve train to the pipe connection port of the customer. A backflow preventer is disposed between them. In this case, the pressure tank is disposed between one end of the discharge-side three-way valve train or between one end of the discharge-side three-way valve train and the demand destination pipe connection port.
[0007]
As described above, in the direct feed water booster pump, the suction port and the discharge port of each pump are connected to the suction port side opening and the discharge port side opening at the upper end of each three-way valve piping unit. As a result, when trouble such as a pump failure occurs, the pump can be quickly attached to and detached from the pipe for inspection and repair.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
As an embodiment of the present invention, FIG. 1 shows a unit arrangement when two pumps are arranged in parallel. The rows of the three-way valves 3 and 4 connected to the suction ports of the pump 1 and the pump 2 and the rows of the three-way valves 5 and 6 connected to the discharge ports of the pumps 1 and 2 are parallel to each other on the same plane. The three-way valves 3, 5, 4, and 6 on the suction port side and the discharge port side of the same pump are switched by the same rotary shafts 9 and 10 so that the valves are switched simultaneously by operating the same handles 7 and 8. Each can rotate at the same time, and the valve can be switched.
[0009]
The rows of the suction port side three-way valves 3 and 4 and the rows of the discharge port side three-way valves 5 and 6 are communicated by the communication tubes 11 and 12, respectively, and the communication tube 11 and the discharge port of the row of the suction port side three-way valves. The side three-way valve row is connected to a communication pipe 12 by a bridge pipe 14 provided with a check valve 13 that circulates only from the suction port side to the discharge port side. One end of the suction port side three-way valve 3 of the piping unit 15 of the pumps 1 and 2 formed in this way is connected to the connection port 17 of the water supply water pipe through the backflow preventer 16 and the discharge port side three-way valve 3. The other end of the directional valve 6 is communicated with a pipe connection port 18 at a demand destination. Further, the pressure tank 19 can be communicated with one end of the discharge port side three-way valve 5.
[0010]
2 and 3, the suction port 20 of the pump 2 is connected to the suction port side opening 21 at the upper end of the suction port side three-way valve 4 of the piping unit 15, and the discharge port 22 of the pump 2 is connected to the piping. The unit 15 is connected to the discharge port side opening 23 at the upper end of the discharge side three-way valve 6, and each connection surface is on the same plane 24. Therefore, when the pump 2 is attached to the piping unit 15 or removed from the piping unit 15, the suction port 20 and the discharge port 21 of the pump 2 are placed on the piping unit 15 at the same time. The pump 2 can be lifted and removed from the piping unit 15. This operation is especially useful when the pump device is placed in a narrow space, or when the pump, piping unit, backflow preventer, pressure tank, etc. are assembled and installed in the cabinet. Convenient to exchange. Note that the above description also applies to the pump 1.
[0011]
Around the suction port 20 of the pump 2 and the suction port side opening 21 at the upper end of the suction side three-way valve 4 of the piping unit 15, as shown in FIG. When connecting a pump to a piping unit, an O-ring 26 is inserted. Instead of the O-ring, as shown in FIG. 3, a normal type gasket 27 can be laid between the pump suction port and the suction port side opening of the piping unit. The above description is the same for the discharge port of the pump 2 and the pump 1.
[0012]
【The invention's effect】
Since the present invention is configured as described above, water supply pipes are considered in consideration of various conditions such as the position of the connection port of the water supply pipe and the pipe to the customer, the water supply pressure of the pipe, the water supply pressure to the customer, etc. Can easily change the position of the connection port of the pipe, the connection port of the pipe to the customer, the backflow preventer and the pressure tank, and the piping unit and pump that can perform the piping of the most appropriate direct connection water booster pump Provides a combination with. In particular, the suction port and discharge port of each pump are on the same plane, and are connected to the suction port side opening and the discharge port side opening at the upper end of each three-way valve piping unit. In addition, even if one pump fails during operation, backup operation can be performed with another pump, and during that time, the failed pump can be removed and repaired or replaced.
[Brief description of the drawings]
FIG. 1 is a sketch of a directly connected water booster pump in which a three-way valve piping unit and a pump according to the present invention are combined.
FIG. 2 is a partial cross-sectional view showing a state in which an O-ring groove and an O-ring are disposed between a pump suction port and a suction port side opening of a piping unit.
FIG. 3 is a partial cross-sectional view showing a state in which a gasket is laid between a pump suction port and a suction port side opening of a piping unit.
[Explanation of symbols]
1 Pump 1
2 Pump 2
3 Three-way valve 4 on the inlet side of the pump 1 Three-way valve 5 on the inlet side of the pump 2 Three-way valve 6 on the outlet side of the pump 1 Three-way valve 7 on the outlet side of the pump 2 Handle 1
8 Handle 2
9 Rotating shaft 1
10 Rotating shaft 2
DESCRIPTION OF SYMBOLS 11, 12 Connection pipe 13 Check valve 14 Bridge pipe 15 Piping unit 16 Backflow preventer 17 Connection port to the water supply pipe 18 Pipe connection port to the customer 19 Pressure tank 20 Suction port 21 Suction port side opening 22 Discharge port 23 Discharge port side opening 24 Flat surface 25 O-ring groove 26 O-ring 27 Gasket

Claims

The three-way valve row connected to the pump suction port and the three-way valve row connected to the pump discharge port are arranged in parallel on the same plane, and the same pump suction side and discharge port side These three-way valves can be rotated simultaneously by the same shaft so that the valves can be switched simultaneously by operating the same handle, and the rows of the pump suction side three-way valves and the pump discharge side three-way valves are each connected to the communication pipe. And a check valve that only circulates from the suction port side to the discharge port side between the communication tube of the suction port side three-way valve row and the communication pipe of the discharge port side three-way valve row. Connected with a pipe, the line of the inlet side three-way valve and the line of outlet side three-way valve connected by these communication pipes, a bridge pipe with a check valve, etc., as a single pipe unit, In the water supply device that is connected to the pump of
The suction port and the discharge port of each pump are connected to the suction port side opening and the discharge port side opening at the upper end of each three-way valve piping unit on the same plane. apparatus

The suction port and the discharge port of each pump are on the same plane, and are connected to the suction port side opening and the discharge port side opening of each three-way valve piping unit through O-ring grooves and O-rings provided on the respective surfaces. The piping device of the water supply device according to claim 1, wherein the piping device is connected.

The suction port and the discharge port of each pump are connected to the suction port side opening and the discharge port side opening of each three-way valve piping unit via gaskets sandwiched between the respective surfaces on the same plane. The piping device of the water supply apparatus according to claim 1