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【標(biāo)題】

當(dāng)泵的輸出達(dá)到并超過設(shè)定值時，‘安全閥（溢流閥）開啟，將油泵輸出的液壓油泄放掉一部分，使液壓油的壓力下降到設(shè)定值以下。只要油壓一降到設(shè)定值以下，‘安全閥（溢流閥）就恢復(fù)關(guān)閉。立式管道泵為立式結(jié)構(gòu)使液壓油的壓力重新回到開啟壓力以上。系統(tǒng)壓力就在設(shè)定的開啟壓力上下波動。以上所說的穩(wěn)定壓力的條件是管道泵油泵輸出流量要足夠大！也就是說負(fù)載消耗量對系統(tǒng)壓力是有影響的。如果負(fù)載消耗過大，油泵的輸出流量不足以滿足負(fù)載的消耗，（包括短時間消耗甚至是瞬間消耗），系統(tǒng)油的壓力會處于‘安全閥（溢流閥）開啟壓力以下，這時候系統(tǒng)的壓力就由負(fù)載決定了。系統(tǒng)油壓力由安全閥決定，當(dāng)系統(tǒng)油壓力達(dá)不到’安全閥開啟壓力時，系統(tǒng)油壓力由管道泵負(fù)載決定。

一、管道泵產(chǎn)品概述:
ISG 系列單級單吸立式管道離心泵，博源泵業(yè)科技人員聯(lián)合國內(nèi)水泵專家選用水力模型，采用IS型離心泵之性能參數(shù)，在一般立式泵的基礎(chǔ)上進(jìn)行巧妙組合設(shè)計而成。同時根據(jù)使用溫度、介質(zhì)等不同在ISG型基礎(chǔ)上派出適用熱水、高溫、腐蝕性化工泵、油泵。該系列產(chǎn)品具有節(jié)能、噪音低、性能可靠等優(yōu)點。jdhuiquan4.10

二、管道泵主要用途:
1、ISG型立式管道離心泵，供輸送清水及物理化學(xué)性質(zhì)類似于清水的其他液體之用，適用于工業(yè)和城市給排水、高層建筑增壓送水、園林噴灌、消防增壓、遠(yuǎn)距離輸送、暖通制冷循環(huán)、浴室等冷暖水循環(huán)增壓及設(shè)備配套，使用溫度T<80℃。
2、IRG(GRG)型立式熱水(高溫)循環(huán)泵廣泛適用于：能源、冶金、化工、紡織、造紙，以及賓館飯店等鍋爐高溫?zé)崴鰤貉h(huán)輸送及城市采用暖系統(tǒng)循環(huán)用泵，IRG型使用溫度T<120℃，珀GRG型使用溫度T<240℃。
3、IHG型立式管道化工泵，供輸送不含固體顆粒，具有腐蝕性，粘度類似于水的液體，適用于石油、化工、冶金、電力、造紙、食品制藥和合成纖維等部門，使用溫度為20℃~+120℃。
4、YG型立式管道油泵，供輸送汽油、煤油、柴油等石油產(chǎn)品，被輸送介質(zhì)溫度為-20℃~+120℃。

電廠管道泵@保定電廠管道泵ISG100-160

Using is type centrifugal pump performance parameters, in the general vertical pump on the basis of a clever combination of design, at the same time according to the use of temperature, media and other different derived heat pumps, high-temperature corrosion-resistant chemical pumps and oil pumps. ISG Vertical pipeline centrifugal pump with high efficiency and energy saving, low noise, reliable performance and other advantages, in line with the National Machinery department JB/T53058-93 standard requirements, products in accordance with international ISO2858 standards design and manufacture. ISG Vertical Pipeline Centrifugal pump is the scientific and technological personnel internal pump experts to choose the domestic excellent hydraulic model, the use of is centrifugal pump performance parameters, in the general vertical pump on the basis of a clever combination of design and manufacture, at the same time, according to the use of temperature, different media in the ISG vertical pipeline centrifugal pump based on the derivation of hot water pipeline pump Corrosive chemical pumps, oil pumps and other products, ISG vertical pipeline centrifugal pump has the advantages of high efficiency and energy saving, low voice, reliable performance and so on. Main features of ISG vertical pipeline centrifugal pump: 1.

三、管道泵工作條件:
1、吸入壓力≤1． 0MPa，或泵系統(tǒng)工作壓力≤1．6MPa，即泵吸入口壓力+泵揚程≤1．6MPa，泵靜壓試驗壓力為2．5MPa，訂貨時請注明系統(tǒng)工作壓力。泵系統(tǒng)工作壓力大于1．6MPa時應(yīng)在訂貨時另行提出，以便在制造時泵的過流部分和聯(lián)接部分采用鑄鋼材料。 
2、環(huán)境溫度<40℃，相對濕度<95％。
3、所輸送介質(zhì)中固體顆粒體積含量不超過單位體積的0．1％，粒度<0．2mm。

注：如使用介質(zhì)為帶有細(xì)小顆粒，請在訂貨時說明，以便廠家采用耐磨式機(jī)械密封。

四、管道泵產(chǎn)品特點:

1、管道泵為立式結(jié)構(gòu)，進(jìn)出口口徑相同，且位于同一中心線上，可象閥門一樣安裝于管路之中，外形緊湊美觀，占地面積小，建筑投入低，如加上防護(hù)罩則可置于戶外使用。
2、葉輪直接安裝在電機(jī)的加長軸上，軸向尺寸短，結(jié)構(gòu)緊湊，泵與電機(jī)軸承配置合理，能有效地平衡泵運轉(zhuǎn)產(chǎn)生的徑向和軸向負(fù)荷，從而保證了泵的運行平穩(wěn)，振動小、噪音低。

電廠管道泵@保定電廠管道泵ISG100-160

High temperature, corrosive chemical pump, oil pump. ISG Vertical Pipeline Centrifugal pump has the advantages of high efficiency and energy saving, low noise and reliable performance. ISG Vertical Pipeline Centrifugal pump type ISG vertical pipeline centrifugal pump is widely used, according to the different models, pipeline centrifugal pump can be used in energy, chemical, textile, paper, irrigation, urban water supply and other fields. The use of a wide range of temperature, corrosion resistance, but in the selection of time must pay attention to, pipeline centrifugal pump is not universal, so the model must be selected right. ISG Vertical pipeline Centrifugal pump product features 1,ISG vertical pipe centrifugal pump for vertical structure, import and export caliber is the same, and located in the same centerline, can be installed in the same line as a valve in the pipeline, compact and beautiful appearance, small footprint, low construction investment, such as the addition of protective cover can be placed outdoors. The impeller is mounted directly on the extended shaft of the motor, with a short axial size, compact structure, reasonable configuration of the pump and motor bearings, and can effectively balance the radial and axial loads produced by the pump operation.

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