JP2021036149A - State monitor device for pump, and pump with the same - Google Patents

State monitor device for pump, and pump with the same Download PDF

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JP2021036149A
JP2021036149A JP2019158160A JP2019158160A JP2021036149A JP 2021036149 A JP2021036149 A JP 2021036149A JP 2019158160 A JP2019158160 A JP 2019158160A JP 2019158160 A JP2019158160 A JP 2019158160A JP 2021036149 A JP2021036149 A JP 2021036149A
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pump
casing
soft rubber
pressure sensor
liner
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JP7339074B2 (en
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達夫 葛山
Tatsuo Katsurayama
達夫 葛山
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Furukawa Industrial Machinery Systems Co Ltd
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Abstract

To provide a state monitoring technique for pump that is applicable to pump state monitoring, remote monitoring, and an information transmission device.SOLUTION: A state monitoring device 10 for pump is used for a pump 1 such that a liquid contact part of a casing 5 has its inner surface lined with soft rubber or a liner 3 made of soft rubber is included inside the casing 5 so as to monitor a state of the pump 1, and also has: pressure sensors 20A, 20B, 20C, and 20D which are embedded at a plurality of places in the soft rubber constituting a lining or liner 3 while isolated from the inner surface of the liquid contact part of the lining or liner 3; and a controller 30 which detects information associated with the state of the pump 1 based upon pressure information acquired by the pressure sensors 20A, 20B, 20C, and 20D at the plurality of places.SELECTED DRAWING: Figure 1

Description

本発明は、ポンプの状態を監視する技術に関する。 The present invention relates to a technique for monitoring the state of a pump.

例えば、高濃度スラリや腐食性スラリを圧送するスラリポンプは、接液部品の早期摩耗、異物の噛み込みや詰まり、著しい性能低下に見舞われることがある。そのため、突発的なメンテナンスに日頃から備えておく必要がある。
一方、突発的な対応を嫌って早めに部品交換を行っている場合は、最適なメンテナンス周期を逃していることが多い。そのため、ユーザ・メーカ共に、豊富な部品在庫および保全サポート要員を常に抱えなければならず、メンテナンスコストおよびランニングコストが嵩んでいるという現状がある。 For example, a slurry pump that pumps high-concentration slurry or corrosive slurry may suffer from premature wear of wetted parts, foreign matter biting or clogging, and significant performance degradation. Therefore, it is necessary to prepare for sudden maintenance on a daily basis.
On the other hand, if parts are replaced early in dislike of sudden response, the optimum maintenance cycle is often missed. Therefore, both users and manufacturers must always have abundant parts inventory and maintenance support personnel, and the current situation is that maintenance costs and running costs are high.

特開２００８−２６１６６８号公報（段落００１１、００１６）Japanese Unexamined Patent Publication No. 2008-261668 (paragraphs 0011 and 0016)

これに対し、ポンプの状態を監視すべく、ポンプに接続される吸込配管や吐出配管に圧力計を取り付けることは古くから一般的であるものの（例えば特許文献１参照）、より多くの運転状況の情報を得るには、ポンプの接液部もしくは接液部に極力近い場所に、圧力センサを取り付ける必要がある。
しかし、高濃度・腐食性用のスラリポンプにおいては、圧力センサの取付け穴から摩耗が進行するという問題がある。そのため、スラリポンプの接液部自身に圧力センサを取り付けることは実用上、困難である。
そこで、本発明は、このような問題点に着目してなされたものであって、高濃度スラリや腐食性スラリを圧送するスラリポンプであっても、ポンプ自体の状態を監視し得る、ポンプ用状態監視装置およびこれを備えるポンプを提供することを課題とする。 On the other hand, although it has been common for a long time to attach a pressure sensor to the suction pipe and the discharge pipe connected to the pump in order to monitor the state of the pump (see, for example, Patent Document 1), there are more operating conditions. In order to obtain information, it is necessary to install the pressure sensor in the wetted part of the pump or in a place as close as possible to the wetted part.
However, in a slurry pump for high concentration and corrosiveness, there is a problem that wear progresses from the mounting hole of the pressure sensor. Therefore, it is practically difficult to attach a pressure sensor to the wetted portion itself of the slurry pump.
Therefore, the present invention has been made by paying attention to such a problem, and is for a pump capable of monitoring the state of the pump itself even if it is a slurry pump that pumps a high-concentration slurry or a corrosive slurry. An object of the present invention is to provide a condition monitoring device and a pump equipped with the condition monitoring device.

上記課題を解決するために、本発明の一態様に係るポンプ用状態監視装置は、ケーシングの接液部内面が、軟質ゴムでライニングされているか若しくはケーシング内側に軟質ゴム製のライナが内包されているポンプに用いられ、該ポンプの状態を監視する状態監視装置であって、前記軟質ゴムの接液部内面から離隔して前記軟質ゴム中の複数箇所に埋め込まれた圧力センサと、該複数箇所の圧力センサで取得された圧力情報に基づいて、前記ポンプの状態に係る情報を検知する状態情報検知部と、を有することを特徴とする。 In order to solve the above problems, in the state monitoring device for a pump according to one aspect of the present invention, the inner surface of the wetted portion of the casing is lined with soft rubber, or a liner made of soft rubber is contained inside the casing. A condition monitoring device used in a pump to monitor the state of the pump, which is a pressure sensor embedded in a plurality of locations in the soft rubber separated from the inner surface of the wetted portion of the soft rubber, and the plurality of locations. It is characterized by having a state information detection unit that detects information related to the state of the pump based on the pressure information acquired by the pressure sensor of the above.

本発明の一態様に係るポンプ用状態監視装置によれば、軟質ゴム製のライニング若しくはライナの接液面から離隔して軟質ゴム中に埋め込まれる圧力センサを接液部内面の複数箇所に配し、状態情報検知部により、その複数箇所の圧力センサで取得された圧力情報に基づき、ポンプの状態に係る情報を検知することができる。
そのため、高濃度スラリや腐食性スラリを圧送するスラリポンプであっても、ケーシングの接液部内面が、軟質ゴムでライニングされているか若しくはケーシング内側に軟質ゴム製のライナが内包されているポンプに本発明の一態様に係るポンプ用状態監視装置を用いれば、そのポンプの内部圧力の異常、ポンプの性能低下、摩耗状況などのポンプ自体の状態を監視できる。 According to the pump state monitoring device according to one aspect of the present invention, pressure sensors embedded in the soft rubber separated from the wetted surface of the soft rubber lining or liner are arranged at a plurality of locations on the inner surface of the wetted portion. , The state information detection unit can detect information related to the state of the pump based on the pressure information acquired by the pressure sensors at the plurality of locations.
Therefore, even in a slurry pump that pumps high-concentration slurry or corrosive slurry, the inner surface of the wetted part of the casing is lined with soft rubber, or the inner surface of the casing contains a liner made of soft rubber. By using the pump state monitoring device according to one aspect of the present invention, it is possible to monitor the state of the pump itself such as an abnormality in the internal pressure of the pump, deterioration of the performance of the pump, and a wear state.

また、上記課題を解決するために、本発明の一態様に係るポンプは、ケーシングの接液部内面が、軟質ゴムでライニングされているか若しくはケーシング内側に軟質ゴム製のライナが内包されているポンプであって、本発明の一態様に係るポンプ用状態監視装置が装備されていることを特徴とする。
本発明の一態様に係るポンプによれば、本発明の一態様に係るポンプ用状態監視装置が装備されているので、ポンプ自体の状態を監視できる。 Further, in order to solve the above problems, the pump according to one aspect of the present invention is a pump in which the inner surface of the wetted portion of the casing is lined with soft rubber or a liner made of soft rubber is contained inside the casing. It is characterized in that the pump state monitoring device according to one aspect of the present invention is equipped.
According to the pump according to one aspect of the present invention, since the pump state monitoring device according to one aspect of the present invention is equipped, the state of the pump itself can be monitored.

上述したように、本発明によれば、ポンプ自体の状態を監視できる。 As described above, according to the present invention, the state of the pump itself can be monitored.

本発明の一態様に係るポンプ用状態監視装置を備えるポンプの一実施形態を説明する模式的縦断面図である。It is a schematic vertical sectional view explaining one Embodiment of the pump provided with the condition monitoring device for a pump which concerns on one aspect of this invention. 図１のポンプ用状態監視装置に用いられている圧力センサの模式図であり、同図（ａ）はその正面図、（ｂ）は（ａ）でのＺ−Ｚ断面図である。FIG. 1 is a schematic view of a pressure sensor used in the condition monitoring device for a pump of FIG. 1, FIG. 1A is a front view thereof, and FIG. 1B is a sectional view taken along line ZZ in FIG. 1A.

以下、本発明の一実施形態について、図面を適宜参照しつつ説明する。本実施形態の例は、本発明の一実施形態に係るポンプ用状態監視装置が、高濃度・腐食性用のスラリポンプとして用いられる遠心ポンプに装備されている例である。
なお、図面は模式的なものである。そのため、厚みと平面寸法との関係、比率等は現実のものとは異なることに留意すべきであり、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれている。
また、以下に示す実施形態は、本発明の技術的思想を具体化するための装置や方法を例示するものであって、本発明の技術的思想は、構成部品の材質、形状、構造、配置等を下記の実施形態に特定するものではない。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate. An example of the present embodiment is an example in which the condition monitoring device for a pump according to the embodiment of the present invention is provided in a centrifugal pump used as a slurry pump for high concentration and corrosiveness.
The drawings are schematic. Therefore, it should be noted that the relationship, ratio, etc. between the thickness and the plane dimension are different from the actual ones, and the drawings include parts where the relationship and ratio of the dimensions are different from each other.
In addition, the embodiments shown below exemplify devices and methods for embodying the technical idea of the present invention, and the technical idea of the present invention describes the material, shape, structure, and arrangement of constituent parts. Etc. are not specified in the following embodiments.

図１に示すように、この遠心ポンプ１は、フレーム（不図示）の前方に設けられるケーシング５を備える。フレームには、軸方向の前後に離隔した軸受を介して駆動軸４を回転自在に支持する軸受部が設けられる。
駆動軸４の先端には、ケーシング５の内部に収納されたセミオープン型のインペラ２が固定されている。インペラ２は、略円板状のベース部２ｂを有し、ベース部２ｂには、軸方向前方に張り出す複数の羽根２ｃが一体形成されている。 As shown in FIG. 1, the centrifugal pump 1 includes a casing 5 provided in front of a frame (not shown). The frame is provided with a bearing portion that rotatably supports the drive shaft 4 via bearings separated from each other in the front-rear direction in the axial direction.
A semi-open type impeller 2 housed inside the casing 5 is fixed to the tip of the drive shaft 4. The impeller 2 has a substantially disk-shaped base portion 2b, and a plurality of blades 2c projecting forward in the axial direction are integrally formed on the base portion 2b.

ケーシング５は、後方の本体部５ｂと前方の吸込部５ａとを備える。吸込部５ａと本体部５ｂとはボルト・ナット（不図示）で相互に固定され、内部にインペラ２の収容空間が画成される。
ケーシング５の本体部５ｂには、上部に吐出口５ｔが形成され、吐出口５ｔには、吐出配管８が接続されている。また、ケーシング５の吸込部５ａには、前方にフロントカバー６が装着され、フロントカバー６には、前方に軸方向に沿って張り出す吸込口６ｎが形成され、吸込口６ｎには、吸込配管７が接続されている。 The casing 5 includes a rear main body portion 5b and a front suction portion 5a. The suction portion 5a and the main body portion 5b are fixed to each other with bolts and nuts (not shown), and a storage space for the impeller 2 is defined inside.
A discharge port 5t is formed at the upper portion of the main body 5b of the casing 5, and a discharge pipe 8 is connected to the discharge port 5t. Further, a front cover 6 is attached to the suction portion 5a of the casing 5 in the front, a suction port 6n is formed in the front cover 6 so as to project forward along the axial direction, and a suction pipe is formed in the suction port 6n. 7 is connected.

ケーシング５の内部には、接液部内面全体を覆うライナ３が装着されている。なお、ライナ３に替えて、ケーシング５の接液部内面を、軟質ゴムでライニングした構成としてもよい。つまり、本発明は、ケーシングの接液部内面は、軟質ゴムでライニングされているか若しくはケーシング内側に軟質ゴム製のライナを内包しているポンプに適用できる。 Inside the casing 5, a liner 3 that covers the entire inner surface of the wetted portion is mounted. Instead of the liner 3, the inner surface of the wetted portion of the casing 5 may be lined with soft rubber. That is, the present invention can be applied to a pump in which the inner surface of the wetted portion of the casing is lined with soft rubber or the liner made of soft rubber is contained inside the casing.

ここで、ライニング若しくはライナを構成する軟質ゴムは、その材料として、天然ゴムや各種の合成ゴム（例えばアクリロニトリル・ブタジエンゴム（ＮＢＲ）、ブチルゴム（イソブチエン・イソプレンゴム（ＩＩＲ））など）を送液の性状（例えばスラリの腐食性等）に応じて適宜選択する。
また、ライニング若しくはライナを構成する構成する軟質ゴムの硬度としては、デュロメータ硬さ試験機による測定値が、タイプＡ デュロメータ硬さ７０°以下（ＪＩＳ Ｋ６２５３）のものが好ましく、軟質ゴムの性状としては、圧縮永久ひずみが小さいゴムが好適であり、スポンジ状のゴムなど気泡を内在するものは適さない。 Here, as the soft rubber constituting the lining or liner, natural rubber or various synthetic rubbers (for example, acrylonitrile / butadiene rubber (NBR), butyl rubber (isobutyene / isoprene rubber (IIR)), etc.) are fed as the material. It is appropriately selected according to the properties (for example, the corrosiveness of the slurry).
The hardness of the soft rubber constituting the lining or liner is preferably a type A durometer hardness of 70 ° or less (JIS K6253) as measured by a durometer hardness tester, and the properties of the soft rubber are as follows. , Rubber with small compression set is suitable, and rubber with internal bubbles such as sponge-like rubber is not suitable.

本実施形態では、ライナ３を構成する軟質ゴムは、平均粒径が約１ｍｍ以下の微粒子スラリに対してはメタル材よりも優れた耐摩耗性を有している。また、ライナ３を構成する軟質ゴムは、耐食性・耐薬性に対しては、適切な軟質ゴム材料を選択することによって高濃度・腐食性のスラリにも対応できる。このため、高濃度・腐食性のスラリに対しては、接液部内面に、ゴムライニングもしくはケーシング内側に軟質ゴム製のライナを内包しているスラリポンプが好適である。 In the present embodiment, the soft rubber constituting the liner 3 has better wear resistance than the metal material for fine particle slurry having an average particle size of about 1 mm or less. Further, the soft rubber constituting the liner 3 can cope with high-concentration and corrosive slurry by selecting an appropriate soft rubber material for corrosion resistance and chemical resistance. Therefore, for high-concentration and corrosive slurry, a slurry pump having a rubber lining on the inner surface of the wetted portion or a liner made of soft rubber inside the casing is suitable.

ここで、本実施形態の状態監視装置１０は、配管部用の圧力センサ９Ａ、９Ｂと、複数の薄型の圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄと、稼動状態情報検知部を構成するコントローラ３０と、を有する。コントローラ３０は、コンピュータを含んで構成された情報処理装置であり、所定のポンプ稼動状態情報検知処理を実行して、そのポンプの内部圧力の異常、ポンプの性能低下、摩耗状況などのポンプの稼動状態を監視可能に構成されている。
詳しくは、本実施形態では、吸込配管７には、配管部用の圧力センサ９Ａが取付けられ、また、吐出配管８には、配管部用の圧力センサ９Ｂが取付けられている。さらに、ケーシング５の接液部内面には、軟質ゴム製のライナ３の接液面から任意の距離を隔てて薄型の圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄが複数の箇所（この例では四か所）に埋め込まれている。 Here, the condition monitoring device 10 of the present embodiment includes pressure sensors 9A and 9B for piping portions, a plurality of thin pressure sensors 20A, 20B, 20C and 20D, and a controller 30 constituting an operating state information detecting unit. Has. The controller 30 is an information processing device including a computer, executes a predetermined pump operation state information detection process, and operates the pump such as an abnormality in the internal pressure of the pump, a deterioration in pump performance, and a wear status. It is configured so that the status can be monitored.
Specifically, in the present embodiment, the suction pipe 7 is attached with the pressure sensor 9A for the piping portion, and the discharge pipe 8 is attached with the pressure sensor 9B for the piping portion. Further, on the inner surface of the wetted portion of the casing 5, thin pressure sensors 20A, 20B, 20C, and 20D are arranged at a plurality of places (four in this example) at an arbitrary distance from the wetted surface of the liner 3 made of soft rubber. It is embedded in the place).

本実施形態では、接液部内面の任意の複数箇所に、圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄを配することにより、複数箇所の圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄで取得された圧力情報に基づいて、遠心ポンプ１の稼動状態に係る情報を詳しく検知可能に構成されている。
これにより、コントローラ３０は、ポンプ稼動状態情報検知処理の実行により、ポンプの内部圧力の異常、ポンプの性能低下、ポンプの摩耗などを検知するとともに、その検知した情報をモニタ等の表示装置に出力可能になっている。 In the present embodiment, by arranging the pressure sensors 20A, 20B, 20C, 20D at an arbitrary plurality of locations on the inner surface of the wetted portion, the pressure information acquired by the pressure sensors 20A, 20B, 20C, 20D at the plurality of locations can be obtained. Based on this, the information related to the operating state of the centrifugal pump 1 can be detected in detail.
As a result, the controller 30 detects an abnormality in the internal pressure of the pump, deterioration of the performance of the pump, wear of the pump, etc. by executing the pump operation state information detection process, and outputs the detected information to a display device such as a monitor. It is possible.

ここで、コントローラ３０が実行するポンプ稼動状態情報検知処理における、ポンプ稼動状態の監視・診断にあたっては、必ずしも圧力値などの絶対値で評価する必要はなく、新品時からの摩耗や腐食による変動を、新品時の圧力の初期値に対して相対的に評価することによって監視・診断が可能である。
また、圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄは、特に限定されないが、厚さ０．２ｍｍ程度のフィルム状薄膜感圧センサ（例えばインターリンクエレクトロニクス社製）を用いることが好ましい。 Here, in monitoring and diagnosing the pump operating state in the pump operating state information detection process executed by the controller 30, it is not always necessary to evaluate by an absolute value such as a pressure value, and fluctuations due to wear and corrosion from the time of new product are observed. , It is possible to monitor and diagnose by evaluating relative to the initial value of pressure when new.
The pressure sensors 20A, 20B, 20C, and 20D are not particularly limited, but it is preferable to use a film-like thin film pressure sensor (for example, manufactured by Interlink Electronics) having a thickness of about 0.2 mm.

この種の感圧センサは、図２に示す感圧センサ２０のように、例えば直径φ５ｍｍ程度で可動部がない２線式の感圧部２０ａと、ガセット部２０ｆと、を備える。感圧部２０ａは、同図（ｂ）に示すように、上部接着部２０ｂと、上部基板２０ｃと、内部接着部２０ｄと、下部基板２０ｅとを上面側からこの順に積層した構造を有する。内部接着部２０ｄと下部基板２０ｅとにより構成される部分が、感圧部２０ａから導出された配線を含むガセット部２０ｆとされている。
図２に示す感圧センサ２０は、感圧部２０ａに加わる圧力が増加すると電気抵抗がリニアに減少する特性を有する。そのため、作動圧が低く感度範囲も広い、薄く、水分、汚れ等にも強い耐久性のある圧力センサとして採用できる。 Like the pressure sensor 20 shown in FIG. 2, this type of pressure sensor includes, for example, a two-wire pressure sensitive portion 20a having a diameter of about φ5 mm and no moving portion, and a gusset portion 20f. As shown in FIG. 2B, the pressure-sensitive portion 20a has a structure in which the upper adhesive portion 20b, the upper substrate 20c, the internal adhesive portion 20d, and the lower substrate 20e are laminated in this order from the upper surface side. The portion composed of the internal adhesive portion 20d and the lower substrate 20e is a gusset portion 20f including the wiring derived from the pressure sensitive portion 20a.
The pressure-sensitive sensor 20 shown in FIG. 2 has a characteristic that the electric resistance linearly decreases as the pressure applied to the pressure-sensitive portion 20a increases. Therefore, it can be used as a thin, durable pressure sensor that has low operating pressure and a wide sensitivity range, and is resistant to moisture, dirt, and the like.

本実施形態では、図２に示す圧力センサ２０を、軟質ゴム内表面から任意の距離を隔てて、例えば図１のような複数（この例では四か所）の位置に、圧力センサ２０と同じ構成を有する、圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄを埋め込んでいる。つまり、第一の圧力センサ２０Ａは、インペラ２の羽根２ｃの前端と対向する位置に埋入されている。これにより、クリアランスの変動状態を検知できる。 In the present embodiment, the pressure sensor 20 shown in FIG. 2 is placed at a plurality of positions (four places in this example) as shown in FIG. 1 at an arbitrary distance from the inner surface of the soft rubber, and is the same as the pressure sensor 20. The pressure sensors 20A, 20B, 20C, and 20D having a configuration are embedded. That is, the first pressure sensor 20A is embedded at a position facing the front end of the blade 2c of the impeller 2. As a result, the fluctuation state of the clearance can be detected.

また、第二の圧力センサ２０Ｂは、フロントカバー６の吸込口６ｎないしその近傍の位置（本実施形態の例では吸込口６ｎの隅部分）に埋入されている。また、第三の圧力センサ２０Ｃは、ケーシング５の最も低い位置ないしその近傍の位置（本実施形態の例では最も低い位置）に埋入されている。また、第四の圧力センサ２０Ｄは、ケーシング５の吐出口５ｔないしその近傍の位置（本実施形態の例では吐出口５ｔの近傍の位置）に埋入されている。 Further, the second pressure sensor 20B is embedded in the suction port 6n of the front cover 6 or a position near the suction port 6n (in the example of the present embodiment, a corner portion of the suction port 6n). Further, the third pressure sensor 20C is embedded in the lowest position of the casing 5 or a position in the vicinity thereof (the lowest position in the example of the present embodiment). Further, the fourth pressure sensor 20D is embedded in the discharge port 5t of the casing 5 or a position near the discharge port 5t (in the example of the present embodiment, a position near the discharge port 5t).

インペラ２が摩耗して遠心ポンプ１のポンプ性能が低下すると、主に吐出口５ｔ付近の圧力センサ２０Ｄにおいて圧力が大きく低下する。また、ライナ３の摩耗が進行すると、圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄのうち、その摩耗が進行した部分の圧力センサが剥き出しになって通電不良を起こすため、その時点で摩耗量が圧力センサの埋入位置まで到達したことを検知できる。 When the impeller 2 is worn and the pump performance of the centrifugal pump 1 is deteriorated, the pressure is greatly reduced mainly in the pressure sensor 20D near the discharge port 5t. Further, as the wear of the liner 3 progresses, the pressure sensor of the pressure sensors 20A, 20B, 20C, and 20D in which the wear progresses is exposed and causes a power failure. Therefore, the amount of wear is the pressure sensor at that time. It can be detected that it has reached the embedding position of.

さらに、圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄが埋め込まれた位置と通電不良が起こるまでの経過時間から、最終的に穴がライナ３を貫通するまでの残り時間を予測できる。そのため、本実施形態の状態監視装置１０によれば、遠心ポンプ１の部品交換サイクルの最適化が図れる。
また、これらの圧力センサ２０Ａ，２０Ｂ，２０Ｃ，２０Ｄから取得された圧力情報のほか、配管部用の圧力センサ９Ａ、９Ｂから取得された圧力情報や、温度センサ等の他のセンサから取得されたデータも加えることで更に詳細な遠心ポンプ１の運転状況が得られる。 Further, the remaining time until the hole finally penetrates the liner 3 can be predicted from the position where the pressure sensors 20A, 20B, 20C, and 20D are embedded and the elapsed time until the energization failure occurs. Therefore, according to the condition monitoring device 10 of the present embodiment, the component replacement cycle of the centrifugal pump 1 can be optimized.
Further, in addition to the pressure information acquired from these pressure sensors 20A, 20B, 20C, 20D, the pressure information acquired from the pressure sensors 9A, 9B for the piping section, and the pressure information acquired from other sensors such as the temperature sensor. By adding the data, a more detailed operating condition of the centrifugal pump 1 can be obtained.

以上説明したように、本実施形態のポンプ用状態監視装置１０は、ポンプの状態監視全般に適用できる技術であるが、本実施形態のように、高濃度・腐食性用のスラリポンプ等の遠心ポンプ１において、そのポンプの内部圧力の異常、ポンプの性能低下、摩耗状況などのポンプの稼動状態を監視するのに好適である。特に過酷な液質にさらされるスラリポンプのメンテナンスに有効である。 As described above, the pump condition monitoring device 10 of the present embodiment is a technique that can be applied to the overall condition monitoring of the pump, but as in the present embodiment, the centrifugal pump or the like for high concentration and corrosiveness is centrifuged. In the pump 1, it is suitable for monitoring the operating state of the pump such as an abnormality in the internal pressure of the pump, deterioration of the performance of the pump, and a wear state. It is especially effective for maintenance of slurry pumps that are exposed to harsh liquid quality.

さらに、本実施形態のポンプ用状態監視装置１０を用いて、遠心ポンプ１の遠隔監視が可能であり、他の機器との連携によりスラリポンプ等の遠心ポンプ１のメンテナンス情報等の情報発信装置に適用できる。なお、本発明に係るポンプ用状態監視装置およびこれを備えるポンプは、上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しなければ種々の変形が可能であることは勿論である。 Further, the pump state monitoring device 10 of the present embodiment can be used to remotely monitor the centrifugal pump 1, and can be used as an information transmission device such as maintenance information of the centrifugal pump 1 such as a slurry pump in cooperation with other devices. Applicable. It should be noted that the pump state monitoring device and the pump provided with the pump state monitoring device according to the present invention are not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention. ..

１ 遠心ポンプ
２ インペラ
３ ライナ
４ 駆動軸
５ ケーシング
６ フロントカバー
７ 吸込配管
８ 吐出配管
９Ａ、９Ｂ （配管部用の）圧力センサ
１０ 状態監視装置
２０、２０Ａ，２０Ｂ，２０Ｃ，２０Ｄ 圧力センサ
３０ コントローラ（状態情報検知部） 1 Centrifugal pump 2 Impeller 3 Liner 4 Drive shaft 5 Casing 6 Front cover 7 Suction piping 8 Discharge piping 9A, 9B Pressure sensor (for piping) 10 Condition monitoring device 20, 20A, 20B, 20C, 20D Pressure sensor 30 Controller ( Status information detector)

Claims (4)

ケーシングの接液部内面が軟質ゴムでライニングされている若しくはケーシングの内側に軟質ゴム製のライナが内包されているポンプに用いられ、該ポンプの状態を監視する状態監視装置であって、
前記ライニング若しくは前記ライナの接液部内面から離隔して前記ライニング若しくは前記ライナを構成する前記軟質ゴム中に埋め込まれた圧力センサと、
該圧力センサで取得された圧力情報に基づいて、前記ポンプの状態に係る情報を検知する状態情報検知部と、
を有することを特徴とするポンプ用状態監視装置。 A condition monitoring device used for pumps in which the inner surface of the wetted portion of the casing is lined with soft rubber or a liner made of soft rubber is contained inside the casing, and the condition of the pump is monitored.
A pressure sensor embedded in the lining or the soft rubber constituting the liner, separated from the inner surface of the lining or the wetted portion of the liner.
A state information detection unit that detects information related to the state of the pump based on the pressure information acquired by the pressure sensor, and a state information detection unit.
A condition monitoring device for a pump, which comprises. 前記圧力センサは、前記ライニング若しくは前記ライナを構成する前記軟質ゴム中の複数の箇所に埋め込まれている請求項１に記載のポンプ用状態監視装置。 The pump state monitoring device according to claim 1, wherein the pressure sensor is embedded in a plurality of locations in the lining or the soft rubber constituting the liner. 前記ポンプは、前記ケーシングの内部に複数の羽根を有するインペラが収納されたものであり、
前記複数の圧力センサのうち、
第一の圧力センサは、前記インペラの羽根前端と対向する位置に埋入され、
第二の圧力センサは、前記ケーシングの吸込口ないしその近傍の位置に埋入され、
第三の圧力センサは、前記ケーシングの最も低い位置ないしその近傍の位置に埋入され、
第四の圧力センサは、前記ケーシングの吐出口ないしその近傍の位置に埋入されている請求項２に記載のポンプ用状態監視装置。 The pump is one in which an impeller having a plurality of blades is housed inside the casing.
Of the plurality of pressure sensors
The first pressure sensor is embedded at a position facing the front end of the blade of the impeller.
The second pressure sensor is embedded at or near the suction port of the casing.
The third pressure sensor is embedded at or near the lowest position of the casing.
The pump condition monitoring device according to claim 2, wherein the fourth pressure sensor is embedded in the discharge port of the casing or a position in the vicinity thereof. ケーシングの接液部内面が軟質ゴムでライニングされている若しくはケーシングの内側に軟質ゴム製のライナが内包されているポンプであって、
請求項１から３のいずれか一項に記載のポンプ用状態監視装置が装備されていることを特徴とするポンプ。 A pump in which the inner surface of the wetted part of the casing is lined with soft rubber or the liner made of soft rubber is contained inside the casing.
A pump characterized by being equipped with the condition monitoring device for a pump according to any one of claims 1 to 3.
JP2019158160A 2019-08-30 2019-08-30 Condition monitoring device for pump and pump provided with same Active JP7339074B2 (en)

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