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SNS120R42U12.1W21立式三螺杆泵在船上用作輸送潤滑油泵 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
發布時間:2015-6-24 17:05:37 點(diǎn)擊次數: | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
SNS120R42U12.1W21立式三螺杆泵在船上(shàng)用作輸送潤滑油泵
●SN三螺杆泵特點:SN three screw pump features: 1.轉子液壓平衡,振動小,噪音(yīn)低。1. The rotor of the hydraulic balance, little vibration, low noise. 2.輸出穩定,無脈動。2. The output is stable, no pulsation. 3.高效率。3. High efficiency. 4.具有很(hěn)強的自吸能力。4. Has a strong self-priming capacity. 5.零部(bù)件(jiàn)采用通用性強的系列化設計,具有多(duō)種(zhǒng)安裝方式。5. Parts versatility of seriation design, with a variety of installation. 6.結(jié)構緊湊(còu),體積小,重量輕,可在(zài)較(jiào)高轉速下工作。6. Compact structure, small volume, light weight, can work under high rotation speed.
●SN三螺杆泵輸送介質種(zhǒng)類:Low SN three screw pump transmission medium type: a. 潤滑性液體(tǐ):如機械油,滑油,重油,渣油A. lubricate liquid, such as machine oil, lubricating oil, heavy oil, residual oil b. 低潤滑性液體:如輕柴油,重柴油,含蠟稀(xī)油B. lower lubricity liquid, such as light diesel oil, heavy diesel oil, wax containing thin oil c. 粘性液體:如(rú)各(gè)種合成橡膠液和人造(zào)膠液,乳化液C. viscous liquid, such as various kinds of synthetic rubber and synthetic rubber, emulsion
●SN三(sān)螺杆泵應用:Low SN three screw pump application: ·在供熱設備中用做燃油,燃油供應和輸送(sòng)泵(bèng)。In heating equipment used as fuel, fuel supply and transfer pump. ·在機械工業中(zhōng)用做液壓,潤滑和(hé)搖控馬達泵。In the mechanical industry used as hydraulic, lubrication pump and the remote control motors. ·在化學石油化工和(hé)食品工業中用做裝(zhuāng)載,輸送和供液泵(bèng)。In the chemical, petrochemical and food industries used as loading, transportation and feed liquid pump. ·在船舶上用做輸送、增壓(yā)、燃(rán)油噴射和潤滑油泵以及船用液壓裝置泵。On the ship, used for conveying, pressurization, fuel injection, and lubricating oil pump and Marine hydraulic gear pump. 三螺杆泵(SN三螺杆泵,sm三螺(luó)杆泵,spf三螺(luó)杆泵)選型時,要盡可(kě)能詳盡地了解泵的使用條件,除(chú)運(yùn)行參數,如流量、壓力須要弄清楚之外,輸送的介質的特性如介質的腐蝕性,含氣量含(hán)固溶物的比率及固體顆粒的大小(xiǎo)以及介質的工作溫度、粘度、比重對泵内過流元件的腐(fǔ)蝕性等和泵裝置(zhì)的吸入條件,安裝條件均要了解(jiě)。Three-screw pump (SN three screw pump, three screw pump, sm SPF three screw pump selection, should understand the using condition of pump as much detail as possible, in addition to the operating parameters, such as flow rate, pressure need to figure out, transmission characteristics, such as corrosive medium, the medium of air content of solid solution and the ratio of the size of the solid particles as well as the working temperature, medium viscosity, specific gravity within the pump flow components of corrosive and pump suction conditions, such as the installation conditions are to understand. 用戶可以填寫附在本樣本後的泵數據(jù)表,由廠家負責(zé)選型,也可以根(gēn)據樣本按(àn)以下步驟自行選(xuǎn)型。User can fill in the attached to this sample after pump data sheets, the manufacturer shall be responsible for the selection, can also according to the sample, follow these steps to selection. 第一(yī), 确定泵的轉速:(SN 系列螺杆(gǎn)泵的極限轉速為<6000r.p.m)Determine the speed of the pump: (SN series screw pump limit speed for < 6000 r. p.) 1.螺杆泵(bèng)轉速的選擇以輸送介質(zhì)的粘度和泵的規格确定轉速(sù)範圍,一般(bān)輸送高粘(zhān)度介質時,螺杆泵應(yīng)選低轉速;若粘度低 ,相應選擇(zé)高轉速。The rotational speed of screw pump selection for medium viscosity and determine speed range of the specifications of the pump, transmission of high viscosity media in general, the screw pump should choose low speed;If the low viscosity, high speed accordingly. 對于大(dà)規(guī)格的螺杆泵(主杆(gǎn)外徑∮60mm 以上(shàng))For the large size of screw pump (more than 30 main stem diameter of 60 mm)
介質粘度γ>20°E 時,轉速以970rpm 或720rpm 的螺(luó)杆泵。Medium viscosity gamma > 20 ° E, screw pump speed to 970 RPM and 720 RPM. 若(ruò)γ>80°E 如(rú)粘膠液,轉速可選n=200~500rpm的螺杆泵If gamma > 80 ° E, such as viscose, of optional n = 200 ~ 500 RPM of the screw pump 對于小規格的螺(luó)杆泵(主杆外(wài)徑∮60mm 以下):For small specifications of the screw pump (below 30 main stem diameter of 60 mm) : γ>20°E 時,n 選1450rpm 或970rpm的螺杆泵. Gamma > 20 ° E, n selected 1450 RPM and 970 RPM of screw pump. γ>80°E 時,n 選300~600rpm的螺杆泵(bèng)。Gamma > 80 ° E, n selected 300 ~ 600 RPM of the screw pump. 2.由于螺杆泵的轉速愈高摩擦(cā)功率愈高,螺杆(gǎn)泵的磨損越大(dà),壽命(mìng)越短,如果輸送介質的潤滑性較差(chà),或含有微量雜質,應選較(jiào)低轉速,使泵保持較長的使用壽(shòu)命。推薦n<1450rpm。Friction due to the higher the rotational speed of screw pump power, the higher the wear and tear of screw pump, the greater the shorter life, if the medium of lubricity is poorer, or trace impurities, should choose a lower speed, to keep pump with long service life.The recommended n < 1450 RPM. 第二(èr), 結(jié)構形式的選擇(zé)The choice of the form of structure 結構的(de)選擇可根據螺杆泵的運行環境和安裝環境(jìng),選擇合适的安裝(zhuāng)形式(shì)并遵循以下(xià)的原則:On the choice of structure based on the operating conditions of a screw pump and the installation environment, choosing the appropriate type of installation and follow the following principles: 1. 輸送潤滑性油類(lèi),且溫度(dù)T<80℃時,選擇内置軸承結構的螺杆泵。1. Conveyor lubrication oil, and temperature T < 80 ℃, choose built-in bearing structure of the screw pump. 2. 輸送潤滑性較差,或溫度T>80℃時,選(xuǎn)擇外置軸承結構(gòu)的螺杆泵。2. The conveyor lubrication is poorer, or temperature T > 80 ℃, select external bearing structure of the screw pump. 3. 輸送流動性差,粘度高的介質或對所輸送介質進行加熱或保溫時,選雙(shuāng)層加熱泵(bèng)體結構的螺杆泵。3. Conveyor illiquid, high viscosity of the medium or the transport medium for heating or thermal insulation, choose double screw pump heat pump body structure. 4. 輸送(sòng)高溫介(jiè)質時,應選(xuǎn)擇耐高溫的材料制成的泵或局部冷卻的螺杆泵。4. High temperature medium, high temperature resistant materials should be selected for the pump or cooling screw pump. 5. 關于螺杆泵的吸入能力可查(chá)閱樣本。5. About the screw pump suction capacity can refer to the samples. 第三, 螺杆泵(bèng)材料組合(hé)的選擇 見上表(biǎo)Third, the choice of the screw pump material combination See the table above 第四, 螺杆泵的(de)吸上能力(lì)Fourth, the screw pump suction on ability 通過降(jiàng)低轉速或加(jiā)熱降(jiàng)低介(jiè)質黏度的方法,可(kě)達(dá)到高的吸上性能,見NPSHR 表By reducing the speed or heating medium viscosity reduction methods, can achieve high on absorption performance, see the NPSHR table 第五(wǔ),配套電機(jī)的(de)選配(pèi)Fifth, motor selection 螺杆(gǎn)泵(bèng)的型号選定後,根據樣(yàng)本數(shù)據,可查到泵的軸功率N,該軸功率再加上一定的功率儲備後,作為選配(pèi)電機的依據,一般電機功率Nm 不(bú)小于(yú)泵軸功率N 乘以(yǐ)功率儲備系數K 所得(dé)的值即:Nm≥K·N。K 值Screw pump model is selected, according to the sample data, the pump shaft power can be N, the shaft power plus the power of a certain reserve, as a basis for the matching machine, general motors power Nm not less than the pump shaft power N times the power reserve coefficient K of the proceeds of the value, namely: the Nm acuity k. N.K value
三螺杆泵能夠在不同的行業(yè)中使用,在其中能夠發揮重要的作用和(hé)性能,在行業中能夠充分(fèn)展現良好的性能優勢(shì),在産業性能中發揮重要的作用(yòng)和貢獻。下面從特(tè)點.困油及措施(shī)不平衡(héng)等方面向大家介紹一下三螺杆泵(3GR三螺(luó)杆泵,SNH三螺杆泵(bèng)). Three screw pump can be used in different industries, in which can play an important role and performance, can fully show the good performance advantages in the industry, play an important role in industry performance and contribution.From below. Trapped oil and measures unbalance introduce three screw pump (3 gr three screw pump, three screw pump SNH).
1. 特點(diǎn):1. Features: 1)三(sān)螺杆泵(3GR三螺杆泵(bèng),SNH三螺杆泵(bèng))的均勻流量與齒數成正比,而與模數的平方成比(bǐ)例。體積小(xiǎo),重量輕,結構簡樸,制造利便,價(jià)格低,工作可靠,自吸機能較好,對油液污(wū)染不敏感,維護利(lì)便等。1) the three screw pump (3 gr three screw pump, three screw pump SNH) uniform flow rate is proportional to the number of teeth, and with the square of the modulus ratio.Small volume, light weight, simple structure, manufacture, then, low prices, reliable work, self-priming function is good, is not sensitive to oil pollution, maintenance, etc. 2)三螺(luó)杆泵的流量與齒寬成正比,但齒寬的增大受(shòu)齒輪所受液壓(yā)徑向力增加的限制,一(yī)般取齒寬B=(6~10)m,高(gāo)壓時取小值。另外(wài),在容積式液壓泵(bèng)中,三螺杆泵的流量脈動最大。2) three screw pump flow rate is proportional to the tooth width, but the increase of tooth width is restricted by the hydraulic radial force increased by gear, generally take tooth width B = (6 ~ 10) m, when the high pressure of little value.In addition, in the positive displacement hydraulic pump, three screw pump flow pulsation is the largest. 3)進步轉速可以進步泵(bèng)的流量,但受泵吸(xī)入機能(néng)的限制。齒(chǐ)輪泵的轉速一般在1000~1500r/min。3) progress speed can progress the flow of the pump, but restricted by pump suction function.The speed of the gear pump is in commonly 1000 ~ 1500 r/min. 2、三螺杆泵(3GR三螺(luó)杆泵,SNH三螺(luó)杆泵)壓力的措施 端面間隙自(zì)動補償原理: 利用特制的通道把三螺杆(gǎn)泵内壓油腔的(de)壓力油引到浮(fú)動軸套的外(wài)側,作用在一定外形和大小的面積(jī)上(shàng),産生液壓作用力,使軸套壓向齒輪端面,這個力必(bì)需大于齒(chǐ)輪端面作(zuò)用在軸套(tào)内側的作用力,才能保證(zhèng)在各種壓力下(xià),軸套始終自動貼緊齒輪端面,減小三螺杆泵内通過端面的洩漏,達到進步(bù)壓力的目的。其(qí)缺點是:流量和壓力脈動較大,噪聲(shēng)大,排量不可變等。 3.三螺杆(gǎn)泵(3GR三螺杆泵,SNH三螺杆泵)的困油(yóu)現象及卸荷 困油現(xiàn)象的危害(hài): 使閉死容積中的壓力急劇升高,使軸承受到(dào)很大的附加載荷,同時産(chǎn)生功率損失及液體(tǐ)發燒等不良現象;溶解于液體中的空氣便析(xī)生産氣憤泡,産氣憤蝕(shí)現象,引起振動和噪聲。 消除困油現象: 在三螺杆泵(3GR三(sān)螺杆泵,SNH三螺杆泵)的側闆上或浮動軸套上開卸荷槽(cáo)。非(fēi)對稱(chēng)式,必需保證在任何時候都不能使吸油腔與(yǔ)壓油腔相互串通;這樣的齒輪泵(bèng)不(bú)能反轉。三(sān)螺杆泵(3GR三螺杆泵,SNH三螺杆泵)在(zài)使用中注意不(bú)同形式的特點和性能,在(zài)使用中經常出現不(bú)同的問題和反(fǎn)應,在使用中保(bǎo)證正常的使用,出(chū)現問題及時進行解決,對不(bú)同的方面進行控制,按照正常的方式進行(háng)。
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