JP3500807B2 - Maintenance method of flood-type water level gauge at pump station - Google Patents
Maintenance method of flood-type water level gauge at pump stationInfo
- Publication number
- JP3500807B2 JP3500807B2 JP29794995A JP29794995A JP3500807B2 JP 3500807 B2 JP3500807 B2 JP 3500807B2 JP 29794995 A JP29794995 A JP 29794995A JP 29794995 A JP29794995 A JP 29794995A JP 3500807 B2 JP3500807 B2 JP 3500807B2
- Authority
- JP
- Japan
- Prior art keywords
- water level
- water
- pump
- level gauge
- type water
- 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 - Lifetime
Links
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、ポンプ場に設置し
た投込式水位計周辺の堆積物を除去して水位計の計測機
能を確保する投込式水位計の保全方法に関する。
【０００２】
【従来の技術】ポンプ場（ポンプ井等）の水位を計測す
る水位計の一つに投込式水位計がある。投込式水位計
は、水圧と大気圧の差圧で水位を測定することを測定原
理としている。
【０００３】この種の水位計は、下水処理場のポンプ場
等を設置対象としている。設置対象のポンプ井等の底部
には、一般に土砂等が堆積する。堆積物で水位計が埋ま
ってしまうと、計測不能となる。また、土砂等の堆積物
は、ポンプ機能に支障を来したり、設備の働きを阻害し
たりする。
【０００４】このため、ポンプ場には、土砂等の堆積物
を除去する揚砂ポンプ等を設置し、土砂等を除去してい
る。
【０００５】
【発明が解決しようとする課題】しかしながら、揚砂ポ
ンプは、主にポンプ場の最深部に堆積する土砂等を排除
するために設置されており、投込式水位計周辺の土砂等
の排除を十分に行えないのが普通である。従って、水位
計が土砂等に埋まってしまって、計測不能となる恐れが
ある。
【０００６】 そこで本発明は、上記課題を解決し、常
時計測機能を確保できるポンプ場における投込式水位計
の保全方法を提供することを目的とする。
【０００７】
【課題を解決するための手段】本発明は、ポンプ場の水
中に投込式水位計を設置して、その箇所の水位を計測す
る際、投込式水位計の下端付近に噴出口、ポンプの吐出
側と場内配水管側とに受水口をそれぞれ有し、かつ受水
口選択用の操作弁を挿設した配管を設置した後に、ポン
プ稼働時にはポンプの吐出水の一部を用い、またそのバ
ックアップ時には場内水を用いるよう操作弁の開閉を制
御して、投込式水位計周辺の土砂及び（または）堆積物
を排除するようにしたことを特徴とする。
【０００８】
【発明の実施の形態】図１及び図２に本発明の一実施形
態を示す。図１は全体構成図、図２は部分拡大図であ
る。
【０００９】図中、１はポンプ井、２はポンプ、３はこ
のポンプ２の吐出側管路に配設した操作弁、例えば電動
式操作弁、４は投込式水位計、５はこの水位計４が流さ
れるのを防止するための防波管である。
【００１０】前記投込式水位計４は、その下端の脚部
（図示省略）が前記ポンプ井１の底面に達するよう、前
記防波管５内に設置している。その場合、支持部材に中
空管を付設して、その上端を大気に開口させている。つ
まり、水圧と大気圧の差圧で水位の計測を行うようにし
ている。
【００１１】 ６は保全用配管で、この保全用配管６に
は、前記水位計４の下端付近に噴出口６ａを設け、前記
ポンプ２の吐出側（電動式操作弁３の流出口側）と場内
の配水管側に受水口６ｂ，６ｃをそれぞれ有するように
配設し、保全用配管６の分岐点のポンプ２側の配水管側
に操作弁７を、場内配水管側に操作弁８を、例えば電動
式操作弁７、８として挿設している。
【００１２】保全用配管６のポンプ２側の電動式操作弁
７は、ポンプ２の稼働時に開放させる。また、場内配水
管側の電動式操作弁８は、前記ポンプ２が長期間運転さ
れない時に、タイマー制御で一定周期で開放させる。つ
まり、バックアップを行うことになる。
【００１３】このようにすると、ポンプ２の運転時に
は、電動式操作弁７が開放状態、電動式操作弁８が閉止
状態となっており、ポンプ２の吐出水の一部が受水口６
ｂから保全用配管６に流れ込み、噴出口６ａから噴出す
る。この噴出水で水位計４の周辺の土砂等が排除され
る。
【００１４】また、ポンプ２が長期間運転されない時に
は、タイマー制御で電動式操作弁８が一定周期で開放状
態となり、場内水が保全用配管６に供給されて、噴出口
６ａから噴出される。この噴出水で水位計４周辺の土砂
等が排除される。
【００１５】従って、水位計４周辺に堆積する土砂等
は、保全用配管６からの噴出水で確実に排除されるよう
になり、水位計４の計測機能は常時確保される。
【００１６】なお、図示していないが、ポンプ井１の最
深部に堆積する土砂等を排除するために、揚砂ポンプを
設置している。
【００１７】
【発明の効果】以上のように本発明によれば、ポンプの
吐出水圧を利用して投込式水位計周辺の堆積物を除去す
るため、簡単な構成で確実に計測機能を確保することが
できる。しかも、場内水でバックアップするため、ポン
プ不稼働時にも確実に水位計の計測機能を保全すること
ができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush type water level gauge which removes deposits around a flush type water level meter installed at a pumping station and secures a measuring function of the water level meter. It relates to the maintenance method of water level gauge. 2. Description of the Related Art One type of water level gauge for measuring the water level of a pump station (a pump well or the like) is an injection type water level meter. The principle of the water level gauge is to measure the water level with the pressure difference between the water pressure and the atmospheric pressure. [0003] This type of water level gauge is intended for installation at a pump station or the like of a sewage treatment plant. In general, sediment or the like is deposited on the bottom of a pump well or the like to be installed. If the water level gauge is buried with sediment, measurement becomes impossible. In addition, sediment such as earth and sand impairs the pump function and impairs the operation of the equipment. For this reason, a pumping station or the like for removing sediment such as earth and sand is installed at a pumping station to remove earth and sand. [0005] However, the sand pump is provided mainly for removing sediment and the like that accumulates at the deepest part of the pumping station. Usually, it is not possible to sufficiently eliminate the above. Therefore, the water level gauge may be buried in the earth and sand or the like, making it impossible to measure. Accordingly, an object of the present invention is to solve the above-mentioned problems and to provide a method for maintaining a water-filled water level gauge in a pump station that can ensure a constant measurement function. According to the present invention, when a water level gauge is installed in the water of a pump station and the water level at that location is measured, the water level is measured near the lower end of the water level meter. After installing a pipe with an outlet, a discharge side of the pump and a water inlet on the side of the distribution pipe inside the plant, and installing a pipe in which an operation valve for selecting the water inlet is inserted, a part of the discharge water of the pump is used when the pump is operated. Further, at the time of backup, the opening and closing of the operation valve is controlled so as to use the in-site water, so that sediment and / or sediment around the water level gauge is eliminated. FIG. 1 and FIG. 2 show an embodiment of the present invention. 1 is an overall configuration diagram, and FIG. 2 is a partially enlarged view. In the figure, 1 is a pump well, 2 is a pump, 3 is an operation valve disposed on the discharge side pipe of the pump 2, for example, an electric operation valve, 4 is a flood water level gauge, and 5 is this water level. This is a breakwater tube for preventing the total 4 from being washed away. The water level gauge 4 is installed in the breakwater pipe 5 so that the lower leg (not shown) reaches the bottom of the pump well 1. In that case, a hollow tube is attached to the support member, and the upper end is opened to the atmosphere. That is, the water level is measured by the pressure difference between the water pressure and the atmospheric pressure. [0011] 6 is a conservation piping, to the preservation pipe 6
Is provided with a jet port 6a near the lower end of the water level gauge 4, and has water receiving ports 6b and 6c on the discharge side of the pump 2 (the outlet side of the electric operation valve 3) and the water distribution pipe side in the site, respectively. An operating valve 7 is inserted on the water distribution pipe side of the pump 2 at the branch point of the maintenance pipe 6, and an operating valve 8 is inserted on the on-site water distribution pipe side, for example, as electric operated valves 7 and 8. The electric operation valve 7 on the pump 2 side of the maintenance pipe 6 is opened when the pump 2 is operated. When the pump 2 is not operated for a long period of time, the electric operation valve 8 on the in-site water distribution pipe side is opened at a fixed period by timer control. That is, backup is performed. When the pump 2 is operated, the electrically operated valve 7 is opened and the electrically operated valve 8 is closed when the pump 2 is operated.
b flows into the maintenance pipe 6 and spouts from the spout 6a. The spilled water removes earth and sand around the water level gauge 4. When the pump 2 is not operated for a long period of time, the electric operation valve 8 is opened at regular intervals by timer control, and water in the yard is supplied to the maintenance pipe 6 to be spouted from the spout 6a. The erupted water removes soil and the like around the water level gauge 4. Therefore, sediment and the like deposited around the water level gauge 4 can be reliably eliminated by the water jetted from the maintenance pipe 6, and the measuring function of the water level gauge 4 is always ensured. Although not shown, a sand pump is provided to remove sediment and the like deposited at the deepest part of the pump well 1. As described above, according to the present invention, the sediment around the injection type water level gauge is removed by using the discharge water pressure of the pump, so that the measuring function can be surely secured with a simple configuration. can do. Moreover, since the water is backed up by the on-site water, the measurement function of the water level gauge can be reliably maintained even when the pump is not operating.
【図面の簡単な説明】 【図１】本発明の一実施形態を示す全体構成図。 【図２】一実施形態の部分拡大図。 【符号の説明】 １…ポンプ井 ２…ポンプ ４…投込式水位計 ５…防波管 ６…保全用配管 ６ａ…噴出口 ６ａ，６ｂ…受水口 ７，８…電動式操作弁[Brief description of the drawings] FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. FIG. 2 is a partially enlarged view of one embodiment. [Explanation of symbols] 1. Pump well 2. Pump 4 ... Immersion type water level meter 5 ... Wavebreak tube 6 ... Maintenance piping 6a ... spout 6a, 6b ... water receiving port 7,8 ... Electrically operated valve
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G01F 23/14 C02F 1/00 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) G01F 23/14 C02F 1/00
Claims (1)
て、その箇所の水位を計測する際、投込式水位計の下端
付近に噴出口、ポンプの吐出側と場内配水管側とに受水
口をそれぞれ有し、かつ受水口選択用の操作弁を挿設し
た配管を設置した後に、 ポンプ稼働時にはポンプの吐出水の一部を用い、またそ
のバックアップ時には場内水を用いるよう操作弁の開閉
を制御して、投込式水位計周辺の土砂及び（または）堆
積物を排除するようにしたことを特徴とするポンプ場に
おける投込式水位計の保全方法。(57) [Claims] [Claim 1] When an installation type water level meter is installed in the water of a pump station and the water level is measured at that location, a jet port is provided near the lower end of the injection type water level meter. After installing pipes that have water receiving ports on the pump discharge side and on-site water distribution pipe side, respectively, and that are equipped with an operation valve for selecting the water receiving port, a part of the pump discharge water is used when the pump is operating. At the time of backup, control the opening and closing of the operating valve to use the water in the site, and sediment and / or sediment around the water level gauge.
A method for preserving a water level gauge at a pumping station, wherein a load is eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29794995A JP3500807B2 (en) | 1995-11-16 | 1995-11-16 | Maintenance method of flood-type water level gauge at pump station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29794995A JP3500807B2 (en) | 1995-11-16 | 1995-11-16 | Maintenance method of flood-type water level gauge at pump station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09138154A JPH09138154A (en) | 1997-05-27 |
| JP3500807B2 true JP3500807B2 (en) | 2004-02-23 |
Family
ID=17853181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29794995A Expired - Lifetime JP3500807B2 (en) | 1995-11-16 | 1995-11-16 | Maintenance method of flood-type water level gauge at pump station |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3500807B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5677618B2 (en) * | 2012-02-21 | 2015-02-25 | 中国電力株式会社 | Pressure water level meter and pressure water level meter maintenance method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4521313B2 (en) * | 2005-05-11 | 2010-08-11 | 株式会社東芝 | Water level gauge device |
| JP4836530B2 (en) * | 2005-09-15 | 2011-12-14 | 中国電力株式会社 | Wave breaker for float type water level gauge |
| JP5529071B2 (en) * | 2011-05-02 | 2014-06-25 | 中国電力株式会社 | Pressure type water level measuring device and method for removing deposits in breakwater tube using the same |
-
1995
- 1995-11-16 JP JP29794995A patent/JP3500807B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5677618B2 (en) * | 2012-02-21 | 2015-02-25 | 中国電力株式会社 | Pressure water level meter and pressure water level meter maintenance method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09138154A (en) | 1997-05-27 |
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