JPS6125912Y2 - - Google Patents
Info
- Publication number
- JPS6125912Y2 JPS6125912Y2 JP16258477U JP16258477U JPS6125912Y2 JP S6125912 Y2 JPS6125912 Y2 JP S6125912Y2 JP 16258477 U JP16258477 U JP 16258477U JP 16258477 U JP16258477 U JP 16258477U JP S6125912 Y2 JPS6125912 Y2 JP S6125912Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- signal
- pumps
- amount
- water intake
- 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 142
- 238000004140 cleaning Methods 0.000 claims description 28
- 238000001914 filtration Methods 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Feedback Control In General (AREA)
- Control Of Non-Electrical Variables (AREA)
Description
【考案の詳細な説明】
本考案は、複数台の取水ポンプで取水した水を
濾過池、配水池を介して送出するようにした浄水
場において、配水池からの実配水量と濾過池の洗
浄行程とを考慮して取水ポンプの運転台数の変更
頻度を減少させるようにした装置に関するもので
ある。[Detailed description of the invention] This invention is a water purification plant in which water taken by multiple water intake pumps is sent through a filtration pond and a distribution reservoir. This invention relates to a device that reduces the frequency of changing the number of water intake pumps in operation, taking into account the stroke.
第１図は従来の浄水場および取水ポンプの運転
台数決定機構の概略を示すもので、１は取水井、
２は沈澱池、３は濾過池、４は配水池、５は汚水
池であり、取水井１に複数台配設した取水ポンプ
１１，１２，１３によつて取水された水は、矢印
で示すように沈澱池２、濾過池３、配水池４を経
て給水される。しかして２１は配水池４に設けた
水位検出装置、２２はこの水位検出装置２１から
の水位信号Ｓ１に基き取水ポンプ群に運転台数設
定信号Ｓ２を発する台数決定装置である。 Figure 1 shows an outline of the conventional water treatment plant and the mechanism for determining the number of intake pumps in operation, where 1 indicates the intake well;
2 is a sedimentation basin, 3 is a filtration basin, 4 is a distribution basin, and 5 is a sewage basin. Water is supplied through a sedimentation basin 2, a filtration basin 3, and a water distribution basin 4. 21 is a water level detecting device provided in the water distribution reservoir 4, and 22 is a number determining device that issues an operation number setting signal S2 to the water intake pump group based on the water level signal S1 from the water level detecting device 21.
この従来装置において、濾過池３が流量制御の
できない構造のもの、すなわち流入量と流出量が
等しいものとすると、取水ポンプ１１，１２，１
３で取水した取水量Q1と配水池４への流入量Q2
とは若干の時間遅れをもつて同一の値となる。そ
こで水位検出装置２１によつて検出される配水池
４の水位がある範囲の値に保たれれば、配水池４
からの実配水量Q3と取水量Q1とが釣り合つてい
ることとなるから、台数決定装置２２は取水ポン
プの運転台数変更指令を発しない。これに対し、
配水池４の水位が規定値より上昇しまたは下降し
たときは、実配水量Q3と取水量Q1とのバランス
が崩れたことを意味するので、台数決定装置２２
が、配水池４水位を規定値に戻すように、取水ポ
ンプ群の運転台数を減少させ、または増加させ
る。すなわち水位信号S1によつて取水ポンプの運
転台数を制御することにより、実配水量、Q3に
見合つた取水量Q1を得ていることになる。 In this conventional device, if the filtration basin 3 has a structure in which the flow rate cannot be controlled, that is, the inflow rate and the outflow rate are equal, then the water intake pumps 11, 12, 1
The amount of water taken in step 3 Q1 and the amount of water flowing into the reservoir 4 Q2
The values are the same with a slight time delay. Therefore, if the water level of the distribution reservoir 4 detected by the water level detection device 21 is maintained within a certain range, the water distribution reservoir 4
Since the actual water distribution amount Q 3 and the water intake amount Q 1 are balanced, the number determining device 22 does not issue a command to change the number of water intake pumps in operation. In contrast,
When the water level in the water distribution reservoir 4 rises or falls below the specified value, it means that the balance between the actual water distribution amount Q 3 and the water intake amount Q 1 has collapsed, so the quantity determining device 22
However, in order to return the water level of the water distribution reservoir 4 to the specified value, the number of operating intake pumps is decreased or increased. That is, by controlling the number of water intake pumps in operation using the water level signal S1 , the water intake amount Q1 commensurate with the actual water distribution amount, Q3, is obtained.
ところで過池３の洗浄行程は、上記配水池の
水位、取水ポンプの台数変更とは無関係に、通常
タイマによつて一定間隔で行なわれており、この
洗浄行程の洗浄用の水源は過池３で過した水
が使用されている。すなわち過池３の洗浄中
は、取水量Q1と洗浄排水量Q4とが等しくなり、
配水池４への流入量Q2は零となる。 By the way, the cleaning process of the overflow pond 3 is normally carried out at regular intervals by a timer, regardless of changes in the water level of the water distribution reservoir or the number of water intake pumps, and the water source for cleaning in this cleaning process is the overflow basin 3. The filtered water is used. In other words, during cleaning of the filter basin 3, the water intake amount Q 1 and the cleaning drainage amount Q 4 are equal,
The inflow amount Q 2 to the water distribution reservoir 4 becomes zero.
このため、上記従来装置では、例えば実配水量
Q3が一定でこれが取水量Q1と釣り合つている場
合でも、洗浄行程が始まると流入量Q2が零とな
るため配水池４の水位が下がり、この結果台数決
定装置２２が取水ポンプの運転台数増加信号を発
してしまうことがあつた。そしてこの洗浄工程は
短時間で終了するためめ、実配水量Q3と取水量
Q1との関係が変らなければ、今度は取水ポンプ
の運転台数を元に戻すための減少信号が出ること
となり、このように不必要なポンプ運転台数の変
更が行なわれることがあつた。特に実配水量、
Q3は昼と夕方の２回大きなピークがあり、夜は
少なくなるため、洗浄行程がない場合でもかなり
の頻度で取水ポンプの運転台数変更指令が出る
が、これに洗浄行程毎の台数変更が加わると、そ
の頻度がさらに高くなり、このため取水ポンプお
よびその付属装置の機械的電気的寿命を著しく損
う原因となつていた。 For this reason, with the above conventional equipment, for example, the actual water distribution amount is
Even if Q 3 is constant and in balance with the water intake amount Q 1 , when the cleaning process starts, the inflow amount Q 2 becomes zero, so the water level in the water distribution reservoir 4 falls, and as a result, the number determining device 22 changes the number of water intake pumps. There were cases where a signal was issued to increase the number of vehicles in operation. Since this cleaning process is completed in a short time, the actual water distribution amount Q 3 and water intake amount
If the relationship with Q 1 did not change, a reduction signal would be issued to restore the number of water intake pumps in operation, resulting in unnecessary changes in the number of pumps in operation. In particular, the actual amount of water distributed,
In Q3 , there are two large peaks in the daytime and in the evening, and there are fewer peaks at night, so even if there is no cleaning process, commands to change the number of intake pumps in operation are issued quite frequently. In addition, the frequency of such occurrences becomes even higher, which causes a significant loss in the mechanical and electrical life of the water intake pump and its auxiliary equipment.
本考案は、このような点に鑑みなされたもの
で、実配水量または実配水量に洗浄水量を加えた
みかけ上の配水量と取水量との差出力を取り出す
演算装置を設け、この演算装置出力と配水池の水
位検出装置の出力とにより取水ポンプの運転台数
を決定し、ポンプ運転台数の変更頻度を減少させ
たものである。 The present invention was developed in view of these points, and includes a calculation device that extracts the difference output between the actual water distribution amount or the apparent water distribution amount, which is the addition of the washing water amount to the actual water distribution amount, and the water intake amount. The number of intake pumps in operation is determined based on the output and the output of the water level detection device in the water distribution reservoir, reducing the frequency of changes in the number of pumps in operation.
以下、本考案の実施例を第２図について説明す
ると、３１は実配水量、Q3を測定し、実配水量
信号S3を発する流量計、３２は演算装置、３３，
３４はそれぞれシーケンスリレー装置からなる台
数決定装置と洗浄時期決定装置であり、演算装置
３２には、配水量信号S3と、台数決定装置３３か
らの運転中に取水ポンプ台数信号S4と、洗浄時期
決定装置３４からの洗浄水量信号Ｓ５とが入力さ
れる。また台数決定装置３２は配水池４の水位検
出装置２１からの水位信号Ｓ１と演算装置３２の
演算信号Ｓ６との入力を受けて運転台数設定信号
Ｓ２を発し、洗浄時期決定装置３４は上記水位信
号Ｓ１と演算信号Ｓ６との入力を受けて洗浄開始
信号Ｓ７を出力する。この他の構成は第１図の従
来装置と同様であるので同一部分には同一符号を
付して説明を省略する。 Hereinafter, an embodiment of the present invention will be explained with reference to FIG. 2. Reference numeral 31 is a flow meter that measures the actual water distribution amount, Q 3 , and emits an actual water distribution amount signal S 3 , 32 is an arithmetic unit, 33 ,
Reference numerals 34 denote a number determining device and a cleaning timing determining device, respectively, each of which is a sequence relay device.The arithmetic device 32 receives a water distribution amount signal S3 , a water intake pump number signal S4 during operation from the number determining device 33, and a cleaning timing determining device. A cleaning water amount signal S5 from the timing determining device 34 is input. Further, the number determining device 32 receives the water level signal S1 from the water level detecting device 21 of the water distribution reservoir 4 and the calculation signal S6 of the calculation device 32, and issues an operation number setting signal S2, and the cleaning time determining device 34 receives the water level signal S6 from the water level detection device 21 of the water distribution reservoir 4. Upon receiving input of S1 and calculation signal S6, a cleaning start signal S7 is output. The rest of the configuration is similar to the conventional device shown in FIG. 1, so the same parts are given the same reference numerals and the explanation will be omitted.
上記構成の本装置は、通常運転時には、運転中
の取水ポンプ台数信号Ｓ４によつて等価的に求め
た取水量と実配水信号Ｓ３との差出力Ｓ６、およ
び配水池４の水位信号Ｓ１とにより、台数決定装
置３３が配水池水位を一定の範囲に保つように制
御する。これに対し、配水池水位信号Ｓ１と演算
装置３２の差出力Ｓ６を受ける洗浄時期決定装置
３４が、洗浄間隔、損失水頭等を考慮し、かつ上
記差出力Ｓ６およびＳ１の値がある一定範囲にあ
ることを条件に、洗浄開始信号Ｓ７および洗浄水
量信号Ｓ５を発すると、過池３の洗浄が開始さ
れ、この洗浄水量信号Ｓ５が演算装置３２に入力
される。すなわち演算装置３２は上記信号Ｓ４−
｛Ｓ３＋Ｓ５｝の演算を行ない、Ｓ３によつて等
価的に与えられる実配水量にＳ５で与えられる洗
浄水量を加えたみかけ上の配水量と、Ｓ４によつ
て等価的に与えられる取水量との差出力を出力す
る。そして台数決定装置３３は、この結果、すな
わち信号Ｓ６と配水池水位信号Ｓ１とに基き、両
信号の差がある一定値を超えた場合に始めて取水
ポンプの運転台数の運転台数設定信号Ｓ２を発す
るわけである。換言すれば、演算装置３２による
上記みかけ上の配水量と取水量令との差を考慮し
つつ配水池水位がある範囲内に収まるように取水
ポンプの運転台数は決定され、したがつて取水ポ
ンプの運転台数の変更頻度は減少する。 During normal operation, this device with the above configuration uses the difference output S6 between the water intake amount equivalently obtained from the water intake pump number signal S4 in operation and the actual water distribution signal S3, and the water level signal S1 of the water distribution reservoir 4. , the number determining device 33 controls the water level of the water distribution reservoir to be kept within a certain range. On the other hand, the cleaning timing determining device 34 that receives the difference output S6 between the water distribution reservoir water level signal S1 and the calculation device 32 takes into consideration the cleaning interval, water head loss, etc., and sets the value of the difference outputs S6 and S1 within a certain range. Under certain conditions, when the cleaning start signal S7 and the cleaning water amount signal S5 are issued, cleaning of the excess pond 3 is started, and this cleaning water amount signal S5 is input to the arithmetic unit 32. That is, the arithmetic unit 32 receives the signal S4-
Perform the calculation of {S3+S5}, and calculate the apparent water distribution amount by adding the washing water amount given in S5 to the actual water distribution amount equivalently given by S3, and the water intake amount equivalently given by S4. Output the difference output. Based on this result, that is, the signal S6 and the reservoir water level signal S1, the number determining device 33 issues an operating number setting signal S2 for the number of operating water intake pumps only when the difference between both signals exceeds a certain value. That's why. In other words, the number of water intake pumps to be operated is determined so that the water level in the water distribution reservoir falls within a certain range while taking into account the difference between the above-mentioned apparent water distribution amount and the water intake amount order determined by the arithmetic unit 32, and therefore the number of water intake pumps in operation The frequency of changes in the number of vehicles in operation will decrease.
なお上記実施例では、演算装置３２、台数決定
装置３３および洗浄時期決定装置３４をそれぞれ
別々に設けているが、これら装置をマイクロコン
ピユータ等により一つの装置に構成することもで
きる。 In the above embodiment, the arithmetic device 32, the number determining device 33, and the cleaning time determining device 34 are provided separately, but these devices may be configured into one device using a microcomputer or the like.
以上のように本考案は複数台の取水ポンプ、取
水した水の濾過池、および配水池を備えた浄水場
において、上記取水ポンプによる取水量に即した
取水ポンプ台数信号と上記配水池からの実配水量
を示す実配水量信号との差出力を演算して出力す
る演算装置と、上記差出力を受けるとともに上記
配水池の水位信号を受けこれら両信号の所定値に
おいて上記濾過池に洗浄開始信号を上記演算装置
に洗浄水量信号をそれぞれ出力する洗浄時期決定
装置と、上記洗浄水量信号と上記実配水量信号を
受けこれらを加算し該加算信号を上記取水量信号
から減算して差出力を上記演算装置によつて求め
この演算装置からの差出力と上記水位信号とに基
づき上記取水ポンプの運転台数を決定し取水ポン
プにその所要台数に見合つた運転台数設定信号を
出力するとともに取水ポンプ台数信号を上記演算
装置に出力する台数決定装置とを備えたことから
取水ポンプによる取水量を平滑化することができ
るため、取水ポンプ運転台数の切換頻度を軽減す
ることができ、取水ポンプ及びその起動装置等の
付属物の機械的、電気的寿命を向上させることが
できる。 As described above, the present invention is applicable to water treatment plants equipped with multiple water intake pumps, filtration ponds for the water taken in, and water distribution reservoirs. a calculation device that calculates and outputs a difference output from an actual water distribution amount signal indicating water distribution amount; and a calculation device that receives the difference output and also receives a water level signal of the water distribution reservoir, and sends a cleaning start signal to the filtration reservoir at a predetermined value of both signals. a cleaning time determining device that outputs a cleaning water amount signal to the arithmetic device, and a cleaning time determining device that receives the cleaning water amount signal and the actual water distribution amount signal, adds them together, subtracts the added signal from the water intake amount signal, and calculates the difference output as described above. Based on the differential output obtained by the calculation device and the water level signal, the number of water intake pumps to be operated is determined, and a signal for setting the number of water intake pumps to be operated corresponding to the required number is output to the water intake pump, and a signal for the number of water intake pumps is determined. Since it is equipped with a number determining device that outputs the number of intake pumps to the above-mentioned calculation device, it is possible to smooth the amount of water taken by the water intake pumps, so it is possible to reduce the frequency of switching the number of water intake pumps in operation, and to reduce the frequency of switching the number of water intake pumps in operation. The mechanical and electrical life of accessories such as devices can be improved.
第１図は従来の浄水場の制御装置を示すシステ
ム構成図、第２図は本考案に係る取水ポンプの運
転台数決定装置の実施例を示すシステム構成図で
ある。
１……取水井、３……濾過池、４……配水池、
１１，１２，１３……取水ポンプ、２１……水位
検出装置、３２……演算装置、３３……台数決定
装置、Ｓ１……水位信号、Ｓ３……実配水量信
号、Ｓ５……洗浄水量信号、なお図中、同一符号
は同一または相当部分を示す。
FIG. 1 is a system configuration diagram showing a conventional control device for a water purification plant, and FIG. 2 is a system configuration diagram showing an embodiment of a device for determining the number of operating water intake pumps according to the present invention. 1...Water intake well, 3...Filtration pond, 4...Water distribution reservoir,
11, 12, 13...Water intake pump, 21...Water level detection device, 32...Arithmetic device, 33...Number determining device, S1...Water level signal, S3...Actual water distribution amount signal, S5...Washing water amount signal In the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
よび配水池を備えた浄水場において、上記取水ポ
ンプによる手水量に即した取水ポンプ台数信号と
上記配水池からの実配水量を努示す実配水量信号
との差出力を演算して出力する演算装置と、上記
差出力を受けるとともに上記配水池の水位信号を
受けこれら両信号の所定値において上記濾過池に
洗浄開始信号を上記演算装置に洗浄水量信号をそ
れぞれ出力する洗浄時期決定装置と、上記洗浄水
量信号と上記実配水量信号を受けこれらを加算し
該加算信号を上記取水量信号から減算して差出力
を上記演算装置によつて求めこの演算装置からの
差出力と上記水位信号とに基づき上記取水ポンプ
の運転台数を決定し取水ポンプにその所要台数に
見合つた運転台数設定信号を出力するとともに取
水ポンプ台数信号を上記演算装置に出力する台数
決定装置とを備えたことを特徴とする浄水場の取
水ポンプ運転台数決定装置。 In a water purification plant equipped with multiple water intake pumps, filtration ponds for the water taken in, and water distribution reservoirs, actual distribution that strives to signal the number of water intake pumps according to the amount of water produced by the water intake pumps and the actual amount of water distributed from the water distribution reservoirs. a calculation device that calculates and outputs a difference output from the water amount signal; and a calculation device that receives the difference output and receives the water level signal of the water distribution reservoir, and sends a cleaning start signal to the filter pond at a predetermined value of both signals to the calculation device. A cleaning timing determining device that outputs respective water volume signals; and a processing device that receives the cleaning water volume signal and the actual water distribution volume signal, adds them together, subtracts the added signal from the water intake volume signal, and calculates a difference output using the calculation device. The number of operating water intake pumps is determined based on the differential output from this calculation device and the water level signal, and a signal for setting the number of water intake pumps to be operated is output to the water intake pumps in accordance with the required number of pumps, and a signal for the number of intake pumps is output to the calculation device. A device for determining the number of operating water intake pumps for a water purification plant, comprising: a device for determining the number of pumps in operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16258477U JPS6125912Y2 (en) | 1977-12-02 | 1977-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16258477U JPS6125912Y2 (en) | 1977-12-02 | 1977-12-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5487397U JPS5487397U (en) | 1979-06-20 |
| JPS6125912Y2 true JPS6125912Y2 (en) | 1986-08-04 |
Family
ID=29158454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16258477U Expired JPS6125912Y2 (en) | 1977-12-02 | 1977-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6125912Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935188A (en) * | 2017-12-09 | 2018-04-20 | 安徽星辰规划建筑设计有限公司 | A kind of urban landscape wet land system of automatic controlling liquid level height |
-
1977
- 1977-12-02 JP JP16258477U patent/JPS6125912Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107935188A (en) * | 2017-12-09 | 2018-04-20 | 安徽星辰规划建筑设计有限公司 | A kind of urban landscape wet land system of automatic controlling liquid level height |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5487397U (en) | 1979-06-20 |
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