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shz-60直联式双吸离心泵的设计【优秀含10张CAD图纸+全套工程机械毕业设计】

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shz-60直联式双吸离心泵的设计【优秀含10张CAD图纸+全套工程机械毕业设计】.zip

泵的概述及译文

泵的概述(说明书后附).doc---(点击预览)

说明书附图

外伸梁

受力分析全图.dwg

合成。转矩。当量图.dwg

水平，垂直弯矩图.dwg

轴.dwg

轴受力图.dwg

悬臂梁受力图

shoulitu.dwg

悬臂梁受力图.dwg

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泵

法兰连接受力图.dwg

泵体壁厚.dwg

泵体法兰的受力图.dwg

泵出口法兰.dwg

泵工作简图.dwg

盖板.dwg

键.dwg

口环.dwg

叶轮.dwg

叶轮螺母.dwg

泵体.dwg

泵盖.dwg

泵装配图.dwg

甩水环.dwg

轴.dwg

轴套.dwg

连接法兰.dwg

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关键词：: shz 60 直联式双吸离心泵设计优秀优良 10 cad 图纸全套工程机械毕业设计

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!【详情如下】CAD图纸+word设计说明书.doc[16000字，68页]【需要咨询购买全套设计请加QQ97666224】.bat

口环.dwg

叶轮.dwg

叶轮螺母.dwg

泵体.dwg

泵的概述及译文

泵盖.dwg

泵装配图.dwg

甩水环.dwg

设计任务书.doc

说明书.doc

说明书前几页.doc

说明书目录.doc

说明书附图

轴.dwg

轴套.dwg

连接法兰.dwg

摘要

泵是应用非常广泛的通用机械，可以说是液体流动之处，几乎都有泵在工作。而且，随着科学技术的发展，泵的应用领域正在迅速扩大，根据国家统计，泵的耗电量都约占全国总发电量的1/5,可见泵是当然的耗能大户。因而,提高泵技术水平对节约能耗具有重要意义。 6SHZ—60型水泵是清水泵,在设计问题上,从电机的选择计算、轴的选择计算、叶轮的尺寸以及水泵的外形尺寸的确定,基本上解决了泵的大体结构,在其它部件中,连接法兰、叶轮螺母等都是根据具体位置来计算设计的。传动中的轴、键、泵盖都要经过必需的校核,使它的强度和寿命达到设计要求。

关键词:水泵电机设计

Abstract

Pump is the most widely used general machinery,it can be said that any liquid flows,almost all of the pumps work,With the development of science and technology, pumping application areas are expanding rapidly,According to national statistics.Pump power consumption accounted for a fifth of the country,we can see that the pump is only natural consumption market.Pump technology will increase the level of energy conservation has a very important significance.6SHZ-60 is a water pump,the design issues,from motor choices,the choices of axis,the size of impeller pumps dimensions identification,

Largely determine the general structure pump. In other parts, the connecting flanges, Impeller nuts,etc.Are based on the specific location to calculate design.The drive shaft,bond,

Pumps are to be built after the necessary verification,so that their strength and life to the design requirements.

Key word:Water pump;Electrical machinery;Design

摘要···················································

Abstract···················································

前言···················································

第一章离心泵的工作原理··································

第二章水泵的设计·········································

一.泵汽蚀余量的计算方法···································

二.泵的基本参数的确定····································

（一）.确定泵的进口直径·····································

（二）.确定泵的出口直径····································

（三）.泵转速的确定········································

（四）.估算泵的效率········································

（五）.轴功率和原动机功率··································

第三章水泵轴的设计········································

一.轴按外伸梁设计········································

二.轴按悬臂梁设计········································

第四章叶轮结构设计及主要尺寸计算·······················

一．结构设计········································

二．叶轮结构型式的确定··································

三．叶轮轮毂直径的计算·································

四．叶轮进口直径的计算·································

五．叶轮外径的计算··········································

六．叶轮出口宽度的计算·································

七．叶片数的计算和选择·································

八．精算叶轮外径（第一次）·································

九．精算叶轮外径（第二次）·································

十．叶轮出口速度··········································

十一．叶轮进口速度··········································

第五章压出室和吸入室的水力设计··························

一.压出室的水力设计········································

二.吸入室的水力设计········································

第六章水泵零件的强度计算·································

一.泵体强度计算············································

(一)壳体壁厚·············································

(二)强度校核·············································

二.泵体法兰强度计算·······································

三.键的强度校核·········································

（一）叶轮与轴相连处的键····································

（二）电动机轴与叶轮轴相连处的键····························

四.叶轮强度计算··········································

（一）盖板强度计算·········································

（二）叶片厚度计算········································

（三）轮毂强度计算········································

五.泵体连接螺栓的强度计算·································

（一）计算密封力········································

（二）计算螺栓欲紧力和总作用力···························

（三）强度校核········································

六.泵出口法兰的强度校核···································

七.连接螺栓和连接法兰的强度校核···························

（一）连接螺栓的强度校核···································

（二）连接法兰的强度计算··································

第七章泵的轴封设计计算··································

（一）密封端面间液体压力分布规律···························

（二）载荷系数和平衡系数··································

结论·····················································

参考文献·················································

外文资料·················································

中文翻译·················································

致谢·····················································

前言

毕业设计是对学生在毕业前所进行的一次综合能力的训练,是为给社会培养出合格的工程技术人员必须走过的重要环节。通过这次的毕业设计可以充分提高我们在以前所学的零散的理论知识的基础上结合起来综合的分析问题、解决问题的能力,这对我们上了岗位有很大的帮助。

我们这次的设计任务是6SHZ—60型的直联式双吸离心泵的基础的设计,是一次专题性的设计,虽然与四年所学知识有一定的偏距,但是为了能把这次的设计搞好,在赵老师的指导下,我们在设计前努力查阅有关资料,做了必要的准备,我们边设计边查阅资料,给设计奠定了一定的基础,这对我们的设计有很大的帮助。

这次设计集中于画图和水泵各部件的设计计算,我们先把指导老师所给的资料中的图纸吃透,独立分析问题,相互探讨并且解决问题,充分体现了我们独立解决问题的能力。

我们应该从现在做起学好扎实的基础知识,不断丰富自己的专业知识和实际操作能力, 这次设计，赵老师对我们进行了精心的指导，阳泉市水泵厂给了大力的支持并提供了有关资料，在此表示感谢，由于我们能力有限，在设计中难免有错误和不足之处。在此，请各位老师给于评定并提出建议。

第一章离心泵的工作原理

泵是把原动机的机械能转换成液体能量的机器。泵用来增加液体的位能、压能、动能.原动机通过泵轴带动叶轮旋转,对液体做功,使其能量增加,从而使需要数量的液体,由吸水池经泵的过流部件输送到要求的高度或要求压力的地方。

如下图所示,是简单的离心泵装置。原动机带动叶轮旋转,将水从A处吸入泵内,排送到B处。泵中起主导作用的是叶轮,叶轮中的叶片强迫液体旋转,液体在离心力作用下向四周甩出。这种情况和转动的雨伞上的水滴向四周甩出去的道理一样。泵内的液体甩出去后,新的液体在大气压力下进入泵内,如此连续不断地从A处向B处供水。泵在开动前,应先灌满水。如不灌满水,叶轮只能带动空气旋转,因空气的单位体积的质量很小,产生的离心力甚小,无力把泵内和排水管路中的空气排出,不能在泵内造成一定的真空,水也就吸不上来。泵的底阀是为灌水用的,泵出口侧的调节阀是用来调节流量的。

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泵盖.jpg

泵体.jpg

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口环.jpg

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甩水环.jpg

叶轮.jpg

内容简介：: Pumps outline The pump is the application very widespread general machinery, may say that is place of the fluid flow, nearly has the pump in the work. Moreover, along with sciences and technologys development, pumps application domain is expanding rapidly, according to the over-all state statistics, pumps power consumption approximately composes the national total output of electrical energy 1/5, obviously the pump is natural consumes energy the wealthy and powerful family. Therefore, raises the pump technical level to save the energy consumption to have the important meaning. First. Centrifugal pumps principle of work The drive leads impeller revolving through the pump spindle to have the centrifugal force, under the centrifugal action of force, the liquid is flung along the leaf blade flow channel to the impeller export, the liquid sends in after the volute collection the eduction tube. The liquid obtains the energy from the impeller, causes the pressure energy and the speed can increase, and depends upon this energy the hydraulic transport to the operating location. while the liquid is flung which exports to the impeller, the impeller eye center has formed the low pressure, has had the differential pressure in the imbibition pot and between the impeller center liquid, in the imbibition pots liquid under this differential pressure function, after inhales the pipeline and pumps suction chamber unceasingly enters in the impeller. Second, centrifugal pumps structure and main spare part A centrifugal pump mainly by the pump body, the impeller, the packing ring, the rotation axis, the axis seals parts and so on box to be composed, some centrifugal pumps are also loaded with the guide pulley, the inducer, the balance disc and so on. 1. Pump body: Namely pumps shell, including suction chamber and delivery chamber. Suction chamber: Its function is enables the liquid to flow in evenly the impeller. Delivery chamber: Its function collects the liquid, and sends in it the subordinate impeller or guides the eduction tube, at the same time reduces the liquid the speed, causes the kinetic energy to further turn the pressure energy. The delivery chamber has the volute and the guide vane two forms. 2. Impeller: It is in the centrifugal pump transmits the energy for the liquid only part, the impeller with the bond fixation on the axis, leads revolving along with the axis by the prime mover, passes to through the leaf blade prime movers energy the liquid. ntsImpeller classification: According to liquid inflow classification: Single suction impeller (in impellers one side has an entrance) and double attracts the impeller (liquid from impellers lateral symmetry liudao impeller passage). Is opposite according to the liquid in centerlines flow direction classification: Runoff type impeller, axial-flow propeller and interflow type impeller. According to impellers structural style classification: Shrouded impeller, open type impeller and semi-opened impeller. 3. Axis: Is transmits the mechanical energy the important components, the prime movers torque passes to the impeller through it. The pump spindle is the pump rotors major parts, on the axis is loaded with components and so on impeller, axle sleeve, balance disc. The pump spindle depending on the both sides bearing supporting, makes the high speed rotation in the pump, thus the pump spindle in a big way wants the bearing capacity, to be wear-resisting, to be anti-corrosive. Pump spindles material selects the carbon steel or the alloy steel and after the quenching and retempering treatment generally. 4. Packing ring: Is installs in the rotation impeller and the static pump housing (center-section and guide vanes assembly) between packing assembly. It is function is through controls between the two gap method, increases in the pump between the high and low pressure cavity the fluid flow resistance, reduces divulging. 5. Axle sleeve: The axle sleeve is uses for to protect the pump spindle, causes it not to corrode and the attrition. When necessity, the axle sleeve may replace. 6. Axis seals: The pump spindle and around packing box between end covers installs short for axis to seal, mainly prevents in pumps liquid divulging and the air enters in the pump, achieves seals and prevents the air admission to cause the pump cavitation goal. the axis seals form: Namely has skeletons rubber seal, the packing seal and the mechanical seal. 7. axial force balancing unit. Third. Centrifugal pumps prime task parameter 1. Current capacity: Namely the pump in unit of time discharges the liquid quantity, usually indicated with the Unit of volume that mark Q, the unit has m3/h, m3/s, l/s and so on, 2. Lifting: The transportation unit weights liquid (pump suction flange) (pump discharge flange) from the pump inlet place to the pump exit, its energys increment, indicated with H, the unit is m. 3. Rotational speed: Pumps rotational speed is the pump each minute revolving number of times, expressed with N. Electrical machinery ntsrotational speed N generally about 2900 n/min. 4. Net positive suction head: Centrifugal pumps net positive suction head is expressed that pumps performances main parameter, rNPSH uses the symbolic representation. 5. Power and efficiency: Pumps power input is shaft power P, is also electric motors output. Pumps output is the active power. Fourth, pump proper energy loss Pump mechanical energy which obtains from the prime mover, has a part to transform into the liquid energy, but another part because in the pump consumes loses. In the pump all losses may divide into the following several items: 1. Hydraulic loss by the liquid in pump impact, the turbulent flow and the surface friction creates. The impact and the eddy current loss are because the liquid flow change direction produces. The liquid flows through the flow channel general meeting which contacts to present the surface friction, from this produces the energy loss is mainly decided by flow channels length, the size, the shape, the surface roughness, as well as liquid speed of flow and characteristic. 2. Volumetric loss: volumetric loss was already obtained the energy liquid to have a part to flee the result which in the pump the class and leaked outward. Pumps volumetric efficiency vis 0.93 0.98 generally. Improves the packing ring and the seal structure, may reduce the leakage, raises the volumetric efficiency. 3. Mechanical loss mechanical loss refers to the impeller lap side and the pump housing friction loss between the liquid, namely the disc loses, as well as pump spindle when packing, bearing and balancing unit and so on mechanical part movement friction loss, generally before primarily. Fifth, pumps speed change-Proportionality law 1. Centrifugal pumps speed change: A centrifugal pump, when its rotational speed change, its rated flow, lifting and the shaft power will have the change according to the certain proportion relations. At present, uses the frequency conversion velocity modulation electrical machinery to realize centrifugal pumps speed change, is a new important energy conservation way. 2. proportionality law expression: 2121 nnQQ 22121 nnHH 32121 nnNN In the formula, Q, H, N- pumps rated flow, lifting and shaft power The subscript 1,2 express the different ntsrotational speed separately n- rotational speed Sixth, centrifugal pumps ratio rotation Compared to the rotation is the comprehensive parameter which derives by the law of similarity, it is the operating mode function, to a pump, the different operating mode has differently compared to the rotation, for ease of carries on the comparison to the different type pumps performance and the structure, the application optimum condition (the peak efficiency spot) the ratio rotation represents this pump. When chooses the pump, may according to job requirement Q, H and unifies electrical machinerys rotational speed, calculates the ns number, determines pumps type approximately. At that time, 30snused the positive displacement pump generally, at that time, 30snused the centrifugal pump, the interflow pump, the axial flow pump and so on. Seventh,centrifugal pumps cavitation and inspiration characteristic 1.Cavitation phenomenons The pumping station transportation mediums liquid condition and the gas are can transform mutually, the transformed condition is the pressure and the temperature. Under certain temperature, the liquid starts the critical pressure which vaporizes for the vaporization pressure. The temperature is higher, the liquid vaporization pressure is higher. Pump when revolution, if its overflow part local region (for example impeller blade import later somewhere), the liquid absolute pressure drops when pulled out delivers the liquid at that time under the temperature vaporization pressure, the liquid then in this place starts to vaporize, the bubble formation (air bubble internal pressure approximately was equal to vaporization pressure). When these air bubbles along with liquid flow forward motion to high pressure region, down to around the air bubble high-pressured liquid causes the air bubble to reduce suddenly congeals. While air bubble vanishing, the liquid particle by the high speed packing hole, occurs hits mutually forms the intense pressure surge, causes the overflow part to receive the corrosion and the destruction. The above process is called the cavitation. 2. Cavitation will cause serious results: (1). has the vibration and the noise. (2). is influential to pumps operating performance: When the cavitation develops the certain extent, the steam bubble produces massively, will stop up the flow channel, will cause pumps current ntscapacity, lifting, the efficiency and so on obviously to drop. (3). will have the destruction to flow channels material quality: Is mainly nearby the leaf blade entrance the metal weary disintegration. 3. centrifugal pumps inspiration characteristic: (1). Pump has the cavitation basic condition is: Under leaf blade entrance lowest liquid flow pressure kPrNPSH Pump not cavitation aNPSH= rNPSH The pump starts the cavitation aNPSH rNPSH Pump serious cavitation (5). regarding a pump, to guarantee that its safe operation does not have the cavitation, must the net positive suction head also be supposed to add a security allowance regarding the pump, therefore, pumps permission net positive suction head is: NPSH = cNPSH5.11.1 4. Enhances the centrifugal pump anti-cavitation performance the method to include: (1). I mprovement machine pump structure, reduces rNPSH , is machine the pump design question. (2). Enhancement installment effective net positive suction head. Most mainly the most commonly used method uses the irrigation inspiration installment. In addition, reduces the inspiration pipeline resistance loss as far as possible, reduces the liquid the saturated steam tension, namely when design inspiration pipeline selects caliber big as far as possible, length short, the bend and valve few, transportation liquid temperature as far as possible low and so on measures, may enhance the installment the effective cavitation remainder. nts5. axial force balancing unit (1). axial force production reason Around because the impeller the both sides the fluid pressure distributed situation different (wheel cap lateral pressure is low, wheel disk pressure high) causes axial force A1, its direction for from impeller back side direction impeller eye. The fluid flows in and flows out dynamical reaction A2 which impellers direction and the speed different produce, its direction and A1 are opposite, therefore line shaft directive force A=A1-A2, the direction is ordinary and A1 same (general A2 is small). (2). Axial force balanced Uses double attracts the type impeller: The impeller lateral symmetry, the fluid from the both sides inspiration, the axial force automatic counter-balance achieves balanced. Opens the balancing hole or installs the compensating pipe: A: Opens several balancing holes in the impeller wheel disk photograph well regarding the induction port place. B: After order to avoid the balancing hole, because the mainstream is disturbed increases the hydraulic loss, may suppose the compensating pipe to replace the balancing hole, namely uses an acorn tube leading-in point pressure to the wheel disk back side. Uses the balanced leaf blade: Casts several radial direction muscle piece at the back of the leaf wheel disk, the muscle piece drives at the back of the impeller in the gap fluid to accelerate to revolve, increases the centrifugal force, , thus causes at the back of the impeller the pressure obviously to reduce. Using thrust bearing withstanding axial force. Generally in the small single suction pump the thrust bearing may withstand the complete axial force, prevents the pump spindle to flee moves. Eighth, double suction pumps knocked-down and assemble (first) disintegration step 1、 The separation pump housing (1) Demolition shaft coupling pin, is separated from the water pump and the electrical machinery. (2) Dismantles the pump junction plane bolt and the pin, causes the pump cover with the lower part pump body separation, then unloads the stuffing ring. (3) Disassembles with the system has the connection pipeline (for example air conduit, seal water pipe and so on), and with the cloth wrapper good pipe connection, prevents to fall into the sundry goods.after 2, Hangs pump Cover to inspect the above work already completes, then hangs the pump cover. When hoisting up should be steady, and pays attention do not bump ntswith other parts rubs. 3、 Hangs rotor (1) And withdraws both sides bearing body gland Matushita. (2) Uses the steel wire to tie up in the rotor both sides stuffing ring place hoisting up, must maintain is steady, is safe. After the rotor hangs, should place on the special-purpose support, and lays aside sturdily. 4、 Rotors disassemblage (1) Dismantles the pump side shaft coupling, takes care of properly connects the key. (2) Loosens the both sides bearing body end cover and takes down the bearing body, then dismantles the bearing fastening nut, the bearing, the bearing end cover in turn and keeps off the hydrosphere. (3) The packing ring, the stuffing ring, the water sealing ring, the padding set and so on takes down, and inspects its attrition or the corrosion situation. (4) Loosens the both sides the axle sleeve nut, takes down the axle sleeve and inspects its attrition situation, time the necessity gives to replace. (5)Inspection impeller attrition and cavitation situation, if can continue to use, then does not will certainly it to dismantle. If must unload firmly time, must use the special pulling force tool to heat up while disassembles, in order to avoid damages the pump spindle. (second) assemble sequence 1、 The rotor assemble (1) Impeller to install in the axis correct position, cannot be partial to one side, will otherwise create with pump housings axial play uneven has the friction. (2) Installs the axle sleeve and screws tight the axle sleeve nut. In order to prevent Shui Shunzhou to leak off, must use the seal rubber or plastic rings between the axle sleeve and the nut to pad. After the assembly, should guarantee that the rubber or plastic rings by the axle sleeve nut is contracted, and nut and axle sleeve already depending on tight. (3) The packing ring, the padding wrap, the water sealing ring, the stuffing ring and keeps off the hydrosphere to install on the axis. (4) Installs the bearing end cover and the bearing, screws tight the bearing nut, then installs the bearing body and is tight the bearing body and the bearing end cover. (5) Installs the shaft coupling. 2、 Hangs into rotor (1) To hang steadily into the fore-mentioned attire good rotor module in the pump body.after (2) Takes place the packing ring, the plate moves the rotor, whether there is observes the packing ring to rub, should adjust the packing ring to move the rotor vividly until the plate. nts3、 Buckle pump cover Fastens the pump cover, tight pump junction plane bolt and both sides bearing body gland. Then, the plate moves the rotor to look whether with before differs from, if does not have obviously exceptionally, then the air conduit, the seal water pipe and so on connects, adds the padding, then, might carry on the antithetical couplet axial organ to adjust. (Third) Decision pump housing junction plane pads thickness Impeller packing ring after the overhaul has not changed, then the pump housing junction planes pad takes the original thickness then; If the packing ring has upwardly raises, pump junction plane pads thickness needed to use to press the lead wire the method to survey. Usually, the pump cover to the impeller packing rings tight strength is 0-0.03mm. After the new pad completes, after both sides should spread the black white lead, spreads again in the pump junction plane. The attention spreads the white lead to be pure, cannot have the slag lump. Contains in the padding place, the pad must do, certainly must especially carefully cause the pad and the padding contain place the edge even uneven. If the pad is inappropriate, will cause the packing seal, but the massive water leakages, will create doing over. Nine, centrifugal pumps operating procedure 1. Centrifugal pump starts the inspection (1) Electrical machinery overhaul, before connecting the shaft coupling, inspects electrical machinerys rotation direction first to be whether correct. (2) inspection pumps out the inlet line and the attached pipeline, the flange, the valve installs whether to meet the requirement, foot bolt and grounding to be whether good, whether the shaft coupling does install. (3)

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