JPH0318717Y2 - - Google Patents
Info
- Publication number
- JPH0318717Y2 JPH0318717Y2 JP1983078658U JP7865883U JPH0318717Y2 JP H0318717 Y2 JPH0318717 Y2 JP H0318717Y2 JP 1983078658 U JP1983078658 U JP 1983078658U JP 7865883 U JP7865883 U JP 7865883U JP H0318717 Y2 JPH0318717 Y2 JP H0318717Y2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- water
- mini
- water supply
- water level
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 86
- 230000000694 effects Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Landscapes
- Details Of Reciprocating Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案はミニタンク式給水装置の改良に関する
ものである。[Detailed description of the invention] (Field of industrial application) The present invention relates to an improvement of a mini-tank type water supply device.
（従来技術）
ミニタンクとは、第１図のように屋上高架水槽
１（ミニタンク）を制御上必要な最小の大きさと
したもので、タンク１内の水位を水位発信器２に
より検出し、可変速ポンプ３の制御部４へ信号を
電送して、水位に比例する信号で可変速ポンプ３
の速度制御をし、タンク水位の略一定制御をして
いる。第１図において給水管５の下端はポンプ３
の吐出部Ａに接続し、途中に上下間隔をへだてて
多数の給水栓６を備え、上端部Ｂは屋上のミニタ
ンク１に連通している。ミニタンク１は建物７の
屋上に設置した架台８上に据付けてあり、Ｈはミ
ニタンク１の全高水位である。又ミニタンク１内
の水位の検出は、水位発信器２で行い、イ，ロ，
ハ，ニの水位設定とし、水位イで小水量時ポンプ
停止、水位ロで運転、水位ニで２台目ポンプ運
転、水位ハで２台目ポンプ停止等とし、水位ロ〜
ハで水位に比例して速度増減の制御を行うように
している。(Prior art) As shown in Fig. 1, a mini tank is a rooftop elevated water tank 1 (mini tank) made to the minimum size necessary for control.The water level in the tank 1 is detected by a water level transmitter 2, A signal is electrically transmitted to the control unit 4 of the variable speed pump 3, and the variable speed pump 3 is controlled by a signal proportional to the water level.
The tank water level is controlled at a nearly constant level. In Fig. 1, the lower end of the water supply pipe 5 is connected to the pump 3.
It is connected to the discharge part A of the tank, and has a large number of water taps 6 spaced apart vertically along the way, and the upper end part B communicates with the mini-tank 1 on the rooftop. The mini-tank 1 is installed on a pedestal 8 installed on the roof of a building 7, and H is the total water level of the mini-tank 1. Also, the water level in the mini tank 1 is detected by the water level transmitter 2.
The water level is set as C and D, and the pump stops when the water flow is small at water level A, operates at water level B, operates the second pump at water level D, and stops the second pump at water level C, etc.
The speed increase/decrease is controlled in proportion to the water level.
（問題点）
可変速ポンプと定速ポンプの組合せでも、同時
運転時、可変速ポンプの圧力制御作用（速度制
御）により水位一定制御はできるが、可変速ポン
プが故障すると定速ポンプのみでは制御作用がな
いため、第２図のように、水量Q1に対して揚程
H1、水量Q2では揚程H2のように揚程Ｈが変化す
るから、小水量では揚程が大きくなり過ぎて水槽
から溢れてしまう。このため予備ポンプは必ず可
変速ポンプが必要となり、コストが高くなる。(Problem) Even when a variable speed pump and a constant speed pump are combined, when they are operated simultaneously, the water level can be controlled at a constant level by the pressure control action (speed control) of the variable speed pump, but if the variable speed pump fails, the constant speed pump alone cannot control the water level. Since there is no effect, as shown in Figure 2, the head for water amount Q 1 is
H 1 and water volume Q 2 , the head H changes as shown in the head H 2 , so when the water volume is small, the head becomes too large and the tank overflows. Therefore, a variable speed pump is always required as a backup pump, which increases the cost.
一方、最近の可変速ポンプはユニツト化されて
いて、出口に圧力電送器を備え、吐出部の圧力一
定制御を行うものが多い。これをミニタンク方式
に応用すると、コストは安いが、この場合、第１
図Ａ−Ｂ間の摩擦損失水頭（HL）は給水量によ
つて異なるから、その差だけミニタンク内水位が
変動するので、タンクの高さが非常に高くなり、
実用化できない（損失水頭HLが５ｍあれば５ｍ
以上の全高寸法Ｈのタンクが必要となる）。結局
水位一定制御しかできないので、この面でもコス
ト高を招く。 On the other hand, many of the recent variable speed pumps are unitized and equipped with a pressure transmitter at the outlet to control the pressure at the discharge section to a constant level. If this is applied to the mini-tank system, the cost will be low, but in this case, the first
Since the friction loss head (HL) between Figures A and B differs depending on the amount of water supplied, the water level in the mini tank will fluctuate by that difference, so the height of the tank will become very high.
Not practical (5 m if head loss HL is 5 m)
(A tank with the total height H above is required). In the end, it is only possible to control the water level at a constant level, which also increases costs.
（考案の構成）
本考案は上下間隔を隔てた多数の給水栓を有す
る給水管の上端部にミニタンクが連結され、下端
部にミニタンク内の水位を一定に制御するための
吐出部圧力一定制御型ポンプユニツトが連結され
てなり、給水栓からの給水量の変化によつて給水
管の上記上端部と下端部との間の摩擦損失水頭が
変化するミニタンク式給水装置において、最上端
の給水栓とミニタンクとの間の給水管に制御機構
を介装し、上記制御機構を、ポンプユニツト側か
らミニタンクへの流水方向では全閉となりその逆
方向では全開となる逆止弁と、オリフイスとを並
列接続して構成し、ミニタンクに最高水位時にポ
ンプユニツトを停止させるための水位検出器を設
けたミニタンク式給水装置である。(Structure of the invention) This invention has a mini-tank connected to the upper end of a water supply pipe that has a large number of water taps spaced apart from each other, and a discharge part with a constant pressure at the lower end to control the water level in the mini-tank at a constant level. In a mini-tank water supply system in which control type pump units are connected and the friction loss head between the upper and lower ends of the water supply pipe changes depending on the amount of water supplied from the hydrant, the A control mechanism is interposed in the water supply pipe between the hydrant and the mini-tank, and the control mechanism is a check valve that is fully closed in the direction of water flow from the pump unit side to the mini-tank and fully open in the opposite direction; This is a mini-tank type water supply device that is configured by connecting an orifice in parallel, and the mini-tank is equipped with a water level detector to stop the pump unit at the highest water level.
（実施例）
第３図において、ミニタンク１０と最上部位置
Ｃの給水栓６との間の給水管５に制御機構１１を
介装している。制御機構１１の最も簡単なもの
は、第３図に併記したように、逆止弁１２を用
い、この逆止弁１２と並列に断面積可変のオリフ
イス１３を組合わせたものを採用することがで
き、具体的には逆止弁１２の弁板にオリフイス１
３として必要寸法のオリフイス孔を設ければよ
い。逆止弁１２は可変速ポンプ３側からミニタン
ク１０に対する流水方向では全閉、逆にミニタン
ク１０側から流出する時は逆止弁１２が全開とな
るように設ける。(Embodiment) In FIG. 3, a control mechanism 11 is interposed in the water supply pipe 5 between the mini tank 10 and the water supply faucet 6 at the top position C. The simplest control mechanism 11 is one that uses a check valve 12 and combines an orifice 13 with a variable cross-sectional area in parallel with the check valve 12, as shown in FIG. Specifically, an orifice 1 is installed on the valve plate of the check valve 12.
3, an orifice hole of the required size may be provided. The check valve 12 is provided so that it is fully closed when water flows from the variable speed pump 3 side to the mini tank 10, and is fully open when water flows out from the mini tank 10 side.
給水管５下端部の直送給水システム１４（吐出
部圧力一定制御型ポンプユニツト）は可変速ポン
プ３と、その吐出部に配置した圧力電送器１５
と、圧力電送器１５からの信号を受けて可変速ポ
ンプ３の吐出部圧力を一定制御をするための制御
部１６から構成されている。この直送給水システ
ム１４をポンプ吐出部圧力一定制御で運転する
と、第２図に関連した前記説明の通り、給水量が
小となると、給水管５内の摩擦損失水頭の差が圧
力変化として制御機構１１に加わるが、制御機構
１１はこの場合、逆止弁１２を閉じるように働
き、流水はオリフイス１３を通る分がミニタンク
１０内へ流れ込むだけである。又給水量大となつ
て給水管上端部Ｄ付近の圧力が低下し、タンク静
水頭以下になる時は、制御機構１１は逆止弁１２
が全開し、速やかにタンク１０内の水を給水部
（給水栓６）へ応援給水させる。 The direct water supply system 14 (discharge part pressure constant control type pump unit) at the lower end of the water supply pipe 5 includes a variable speed pump 3 and a pressure transmitter 15 arranged at the discharge part.
and a control section 16 for receiving a signal from a pressure transmitter 15 and controlling the discharge section pressure of the variable speed pump 3 at a constant level. When this direct water supply system 14 is operated under constant pump discharge pressure control, as explained above in connection with FIG. 11, but the control mechanism 11 in this case acts to close the check valve 12, and only the amount of water that passes through the orifice 13 flows into the mini tank 10. In addition, when the amount of water supplied becomes large and the pressure near the upper end D of the water supply pipe decreases to below the static water head of the tank, the control mechanism 11 closes the check valve 12.
is fully opened, and the water in the tank 10 is immediately supplied to the water supply section (hydrant 6).
ミニタンク１０内の水位の検出を電極部１７で
行う時、第１図の場合と同様に、第３図のイ、
ロ、ハ、ニの水位設定とし、水位イでポンプ停
止、水位ロでポンプ運転、水位ニで２台目ポンプ
運転、水位ハで２台目ポンプ停止等とする。 When detecting the water level in the mini-tank 10 using the electrode section 17, as in the case of FIG.
The water levels are set as B, C, and D, and the pump is stopped at water level A, the pump is operated at water level B, the second pump is operated at water level D, and the second pump is stopped at water level C.
（考案の効果）
(1) 制御機構１１内の逆止弁１２により無駄圧の
発生を阻止し、無駄圧がミニタンク１０へかか
らないようにできる。従つてミニタンク１０内
の水位変動を小さくでき、このため揚水管を用
いない１管式の給水装置において一般にポンプ
水量の30分程度の貯留のできる容量が要求され
ていたタンクの大きさを、制御水位を検出可能
な容量を有する小さいものにでき、この点にお
けるコストの低減を図ることができる。(Effects of the invention) (1) The check valve 12 in the control mechanism 11 prevents the generation of waste pressure and prevents waste pressure from being applied to the mini tank 10. Therefore, fluctuations in the water level within the mini-tank 10 can be reduced, and for this reason, the size of the tank, which is generally required to have a capacity that can store about 30 minutes of pump water in a single-pipe water supply system that does not use a pumping pipe, has been reduced. The control water level can be made small with a detectable capacity, and costs can be reduced in this respect.
(2) 第３図にＣ点で示す最上部給水栓６の圧力
は、ミニタンク式水位制御の従来方式では、タ
ンクの高さによる静水頭で得るしかなく、屋上
に高い架台を必要とした。例えば７〜８ｍ、特
にシヤワーのような圧力を要するものでは10ｍ
を必要とした。しかし本考案によると、可変速
ポンプ３の吐出圧だけの問題で、好むように決
定できるので昼間、停止制御しないで、夜間な
ど小水量時にのみ停止してよい設備では、その
ように電気的シーケンスを施せばミニタンク１
０に架台は必要とせず、屋上へ直置きも可能で
ある。従つて設備コストが低減する。(2) In the conventional mini-tank type water level control system, the pressure at the top water tap 6 shown at point C in Figure 3 can only be obtained from the static water head due to the height of the tank, which requires a high mount on the roof. . For example, 7 to 8 m, especially 10 m for those that require pressure such as showers.
required. However, according to the present invention, it is only a matter of the discharge pressure of the variable speed pump 3, and it can be determined as desired. Therefore, in equipment that does not require stop control during the day and can be stopped only at times of low water flow, such as at night, such an electrical sequence can be used. Mini tank 1 if applied
0 does not require a stand and can be placed directly on the roof. Therefore, equipment costs are reduced.
(3) 制御機構１１は逆止弁の弁板にオリフイス孔
を設けるだけでよく、従つて構造簡単で安価に
なり、故障もない。(3) The control mechanism 11 only needs to have an orifice hole in the valve plate of the check valve, so the structure is simple, inexpensive, and trouble-free.
(4) 直送給水システム１４は、吐出部圧力一定制
御でよいので、安いユニツト型が使える。(4) Since the direct water supply system 14 requires constant pressure control at the discharge section, an inexpensive unit type can be used.
(5) 可変速ポンプの予備が不要となり、代りに安
い定速ポンプの予備でよいため、システムが格
段に安くできる。(5) A spare variable speed pump is no longer required, and a cheap spare constant speed pump can be used instead, making the system much cheaper.
(6) タンク内水位検出の設定は、高価な水位発信
器を使用しなくてよくなり、安い電極棒で充分
である。(6) For setting the water level detection in the tank, there is no need to use an expensive water level transmitter, and a cheap electrode rod is sufficient.
（補足説明）
(1) 直送給水システムをやめて、低速ポンプで給
水してもよい場合に、従来は不可能であつた
が、本考案によると可能になる。(Supplementary explanation) (1) In cases where it is acceptable to discontinue the direct water supply system and supply water with a low-speed pump, this was not possible in the past, but it becomes possible with the present invention.
(2) 直送給水システムは、可変速で説明したが、
その他の方式による吐出圧一定制御システムで
も効果は同じである。(2) Although the direct water supply system was explained in terms of variable speed,
The same effect can be obtained with other constant discharge pressure control systems.
(3) 制御機構は弁板に直接オリフイス孔を設けた
逆止弁が最も安いが、バイパス管にオリフイス
を仕組むとか、類似の方法でも同じ効果を期待
することができる。(3) The cheapest control mechanism is a check valve with an orifice hole directly in the valve plate, but the same effect can be expected by installing an orifice in the bypass pipe or using a similar method.
第１図は従来構造を示す垂直断面略図、第２図
は定速ポンプにおける揚程と水量の関係を示すグ
ラフ、第３図は本考案による装置の垂直断面略図
である。５……給水管、６……給水栓、１０……
ミニタンク、１１……制御機構、１２……逆止
弁、１３……オリフイス、１４……直送給水シス
テム（圧力一定制御ポンプユニツト）、１７……
電極棒（水位検出器）。
FIG. 1 is a schematic vertical cross-sectional view showing a conventional structure, FIG. 2 is a graph showing the relationship between head and water volume in a constant speed pump, and FIG. 3 is a schematic vertical cross-sectional view of a device according to the present invention. 5... Water pipe, 6... Water tap, 10...
Mini tank, 11... Control mechanism, 12... Check valve, 13... Orifice, 14... Direct water supply system (constant pressure control pump unit), 17...
Electrode rod (water level detector).
Claims (1)
の上端部にミニタンクが連結され、下端部にミニ
タンク内の水位を一定に制御するための吐出部圧
力一定制御型ポンプユニツトが連結されてなり、
給水栓からの給水量の変化によつて給水管の上記
上端部と下端部との間の摩擦損失水頭が変化する
ミニタンク式給水装置において、最上端の給水栓
とミニタンクとの間の給水管に制御機構を介装
し、上記制御機構を、ポンプユニツト側からミニ
タンクへの流水方向では全閉となりその逆方向で
は全開となる逆止弁と、オリフイスとを並列接続
して構成し、ミニタンクに最高水位時にポンプユ
ニツトを停止させるための水位検出器を設けたこ
とを特徴とするミニタンク式給水装置。 A mini-tank is connected to the upper end of a water supply pipe that has a large number of water taps spaced apart from each other, and a pump unit with constant discharge pressure control is connected to the lower end of the water supply pipe to control the water level in the mini-tank at a constant level. Become,
In a mini-tank type water supply device in which the friction loss head between the upper and lower ends of the water pipe changes depending on the amount of water supplied from the hydrant, the water supply between the uppermost hydrant and the mini-tank A control mechanism is installed in the pipe, and the control mechanism is configured by connecting in parallel a check valve that is fully closed in the direction of water flow from the pump unit side to the mini tank and fully open in the opposite direction, and an orifice, A mini-tank type water supply device characterized in that the mini-tank is equipped with a water level detector for stopping the pump unit when the water level is at its highest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7865883U JPS59182695U (en) | 1983-05-24 | 1983-05-24 | Mini tank type water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7865883U JPS59182695U (en) | 1983-05-24 | 1983-05-24 | Mini tank type water supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59182695U JPS59182695U (en) | 1984-12-05 |
| JPH0318717Y2 true JPH0318717Y2 (en) | 1991-04-19 |
Family
ID=30208660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7865883U Granted JPS59182695U (en) | 1983-05-24 | 1983-05-24 | Mini tank type water supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59182695U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586072A (en) * | 1981-06-30 | 1983-01-13 | Fujitsu Denso Ltd | Irregular magnetization preventing system for transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6226636Y2 (en) * | 1979-12-04 | 1987-07-08 |
-
1983
- 1983-05-24 JP JP7865883U patent/JPS59182695U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586072A (en) * | 1981-06-30 | 1983-01-13 | Fujitsu Denso Ltd | Irregular magnetization preventing system for transformer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59182695U (en) | 1984-12-05 |
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