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A: Tangohia te hau kau: mena he hau me te wai te papu, kare e taea e te papu te mahi, ko te rere me te pehanga kei te kore. Cavitation: kei te puta i roto i te papu i te wa e mahi ana, mai i te reo i roto i te papu, rere me te pehanga huringa me te hinga, ka hua i te wiri waipēhi. I te nuinga o te wa ka tangohia te hau i waho o te papu na tetahi ahuatanga i roto i te papu, na te whakaurunga o te paipa paipa hangarau, he onge te whakaurunga o te hau i puta mai i te rerenga, ko te nuinga o enei na te whakarereketanga o te mahi me te tukanga i puta. . I roto i te tikanga ki te karo ranei te whakahaere i te takanga o te cavitation, i roto i te mahi o te rere papu ki whakaōrite, ki te whakaiti i te pēhanga me te pāmahana e kore e taea te puta ki te kia nui huringa. I roto i te raina momi papu kia aukati i te hau mai i te noho, ko te pehanga kokoru ko te pehanga kino o te kokoru papu tatari kia kati.
1)dynamic match :the actual size of the hole is larger than the actual size of the pump
2) static pai: te rahi tūturu o te take he nui atu i te rahi tūturu o te poka i hanga e te whakataetae;
3) te rereke rereke: te urunga hihiri, te tuaka o te takirua; ko te rahi tonu o te poka he nui ake i te rahi tonu o te poka; Ka taea e te poka te mahi i nga nekehanga whanaunga; pai pateko: tuaka me te poka e kore e puta nekehanga whanaunga.
A: He pai, he ma, he whakahinuhinu me te haumaru
A: Labyrinth hiri: he maha nga mea kua whakaritea i runga i te raupapa o nga niho hiri mowhiti, nga niho me te rotor hei hanga i te raupapa o te aputa throttling me te roha o te mokowhiti, te wai i roto i te maha o nga kopikopiko me te hurihanga o te hongere, i muri i te tarai me te whakaputa. great resistance, Kia uaua te rere o te wai, ki te hiri i te kaupapa.
A: 1) Ka taea te whakamahi i nga waahanga ki te whakawhiti tetahi ki tetahi, me te whakatutuki i nga waahanga taketake o nga tohu, e kiia ana ko nga waahanga whakawhiti.
2) played a mainly easy to repair, reduce maintenance time, improve equipment utilization and the role of efficiency.
A: ka tukuna tonu e te papu hiko te kaha ki te wai, kia tere te kaha o te hiko me te piki haere o te pehanga, ko te nuinga ka piki te tere, ka heke tona tere, ka taea te kaha o te kaha kinetic ki te pehanga, te whakamahi kua piki te wai kia ka tukuna i muri i te pehanga ki te kawe, penei: 1) te papu vane, kei roto he centrifugal pump, mixed flow pump, axial flow pump, vortex pump, etc; 2) jet papu, tae atu gas jet pump, liquid jet pump, Me ētahi atu
A: Whakautu: papu displacement pai i roto i te tukanga o ia wā te huri i te rōrahi kōhao papu, i roto i te tikanga ki te mahi me te huringa wā o te kaha whakawhiti displacement ki te kawe wai, na te pehanga whakatika tika ki te pēhanga e hiahiatia ana ki te whakatutuki i te uara i muri i te tuku, penei: 1) te papu tauutuutu, papu piston, papu pupuhi, papu diaphragm, extrusion, aha atu; 2) rotor pump, including gear pump, screw pump, rotz pump, rotary piston pump, slide pump, crankshaft pump, flexible rotor pump, peristaltic pump,etc
A: mainly include: flow, head, NPSH, speed,rotor power and efficiency and so on.
9.He aha e hiahia ana koe ki te puku kōpae auau mo te taputapu e manawapa? He aha ta tatou e aro atu ai?
Answer: 1) regular disk drive for spare equipment, one is to check whether the equipment is flexible and whether there is card resistance; The second is to prevent bearing deformation and so on, really play a standby role. 2) attention should be paid to: one is that the stop position of the rotor after the plate is 180 degrees from the original position; The second part is to lubricate the lubricating oil of the pump should be oil, After turning car, to prevent damage bearing.
A: Ko te naianei kua whakatauhia ko te motuka i roto i te ngaohiko kua tohua, kua whakatauhia te mana i roto i te keehi o te mahi noa o naianei, mena ka nui ake i te waa kua tohua, he ngawari te wera o te motuka, te mahi taputapu whakamarumaru relay, kia pai ai te waka papu, penei i te taputapu tiaki relay ehara i te mahi, i te mahi He ngawari ki te tahu i te motini, kino te papu papu.
Whakautu: 1) tirohia mena kei te waahi kua tohua te tohu o te ine pehanga, i te ammeter ranei, kei te noho pumau; 2) tirohia mehemea he mea noa te oro oma, karekau he haruru; 3) ahakoa he noa te pāmahana o te whanau me te motuka (kaore e neke ake i te 60 nga nekehanga); 4) tirohia mehemea kua wetewetehia te wai whakamahana, te papu whakakao, te hiri hiri miihini, penei mehemea kei roto te rerenga i te awhe e whakaaetia ana; 5) tirohia mehemea kei te piri tonu te waahi hono, kei te wetekina te punga o te punga; 6) tirohia mehemea he pai te whakahinuhinu me te taumata hinu noa.
A) 1) Tirohia mehemea kei te rite te tiiti ratonga ki te nama taputapu tuturu o nga taputapu hei whakatika; 2) Whakapa atu ki te kaitirotiro kia kitea te mate hiko; 3) Whakaratohia te pakaru o nga taputapu me te whakatika i nga waahanga motuhake ki nga kaimahi tiaki; 4) Te tiaki me te tirotiro i te kounga o te tiaki; 5) i muri i te otinga o te tiaki, whakapā atu ki te hiko, te whakamatautau; 6) i muri i te mahi noa, ki te aroturuki i te mahi aroturuki, me te hanga rekoata.
A) 1) ko te paera whakauru te pupuri i te papu ina wehea te papu, ka tapahia ranei nga waahanga o te punaha, kaore e taea te whakamahi ki te whakatika i te rere kia tino tuwhera;
2) the outlet valve is to adjust the flow and open or shut down the pump when the system isolation Of the parts.
A: E ai ki nga tikanga o te tukanga me te pehanga mahi, ko te waahanga o te waahi o te waikura te tere hurihuri.
Whakautu: 1) hiri urunga-kore; 2) hiri-hiri kore-whakarewa me te whakarewa hiato; 3) hiri urunga whakarewa.
A: 1) leakage caused by design; A flange and flanged cover are not selected properly; B gasket selection is not appropriate; C flange and bolt materials are not selected。
2) te turuturu na te hangahanga, te whakaurunga me te mahi; Ko te tika o te miihini me te miihini karekau e tutuki i nga whakaritenga hangarau; B whakatiki i nga tutaki, he mahi hee, he rereke te peeke; Ko te mata hiri C flange kaore e ma, he poke ranei.
Whakautu: hiri miihini, e kiia ana ko te mata ko te rua o te mata mutunga o te hurihanga tuaka poutū, i raro i te mahi o te pehanga wai me te tikanga utu, hanga tahi nga pito e rua, me te paheketanga o te whanaunga me te aukati i te taputapu rerenga wai.
Answer: there are two kinds, dynamic seal and static seal.
A: 1) the sealing end of the moving ring and the static ring is too worn and the loading coefficient is not reasonable in the design. so that the sealing end surface can produce cracks, deformation and breakage. 2) defects in several auxiliary sealing rings or defects due to improper assembly, and selection of auxiliary seals unsuitable for working medium. 3) spring pre-tightening force not enough or after long time operation, fracture, corrosion, relaxation, coking, as well as the working medium of crystallization suspended particles or long time accumulation of congestion in spring clearance, cause spring failure, compensation seal ring can't float, leak; 4) because the vertical deviation of the sealing end and axis of the static ring seal is too large, the sealing end of the sealing face is not tight enough to cause the leakage; 5) because the axial direction of the shaft is large, the parts associated with the seal are not well matched or the quality is poor, which is prone to leakage.
Whakautu: kia rite ki te ahua o te reo, te pehanga mahi, te pāmahana, te tere reti me etahi atu mea hei whiriwhiri, i etahi wa ka whakaarohia te kaha o te wa poto maroke i te wa ka timata, ka pakaru ranei te kiriuhi.
Whakautu: 1) whakaitihia te waatea, 2) whakakaha i nga pupuhi, 3) whakanuia te maha o nga niho kua hiri, 4) ngana ki te huri i te hiko o te rere o te hau ki te hiko wera.
Whakautu: Ko te hiri o te mowhiti e mau ana i runga i te awe o te awhi i hangaia i roto i te waahi whaiti i waenga i te tuaka me te mowhiti rewa, a ka werohia te hinu hiri kei runga ake i te pehanga hau ki roto i te waatea ki te whakatutuki i te kaupapa o te hiri i te hau.
Answer: 1) long-term use of floating ring, normal wear and tear, increase gap; 2) the shaft lining of the floating ring hole is rough and the accuracy is low. 3) improper assembly causes deflection, and the attachment of the middle attachment is lost, so that the oil flow is flowing out from other gaps, which is the increase of leakage;
Answer: 1) the function of oil block is to prevent bearing oil from running along the axial neck to the outside of the bearing, and there are two types of installation position: one is on the bearing pedestal and the other is on the axle. 2) oil retaining clearance can be measured by measuring ruler when oil block is disassembled or assembled. In the face of the oil gap between the axle, it can be properly relaxed. In the face of the oil gap between the bearing blocks, the requirement is strict. The lower part is 0.05-0.10mm, and the two sides are 0.10-0.20mm, and the upper part is 0.20-0.25 mm.
A: 1) the gap between the radial clearance is too large, or the gap between the newly replaced air seal ring is too small; 2) seal or gas seal ring, between the teeth because of wear and dull, or because of long wear after the deformation of heat, resulting in the failure to use; 3) after using for a long time, the spring slacken, deformation, quickly sealing ring can not reach the designated position, after operation, precipitation accumulation of dust, dirt, is sealing medium pressure is lower than the working medium pressure and pressure instability, etc.
Whakautu: hiri hiako hiako, hiri mowhiti, hiri hiri, hiri pneumatic, hiri waipulu, hiri centrifugal, hiri hiri, hiri labyrinth, hiri miihini, aha atu.
Answer: 1) seal itself quality, 2) process operation condition, 3) assembly installation precision, 4) host precision, 5) sealing auxiliary system.
Answer: mechanical seal is composed of static ring, moving ring, compensation buffer mechanism, auxiliary seal ring and transmission mechanism. The end face of the static ring and the moving ring is perpendicular to the axis of the pump and fit together to form a rotating sealing surface. Static ring and gland, all carried out with auxiliary seal ring seal ring on the shaft, to compensate for buffering mechanism drive ring along the axial movement, stay ring and static ring end face, and the wear of sealing ring end face to compensate.
Whakautu: 1) pai te mahi hiri, te rerenga o nga hiri miihini i te nuinga o te 0.01 ki te 5 ml / h, kia rite ki nga whakaritenga motuhake, me te hoahoa motuhake, te hanga o te hiri hiri miihini o te 0.01 ml / h anake, me te iti ake, me te hiri hiri. Leakage mo te 3-80 - ml/h (e ai ki nga tikanga e tika ana o to tatou whenua, ka kore e nui ake te diameter o te toki i te 50 mm te tikanga ka rite te rere ki te 3 ml/h, ka 50 mm te diameter o te toki. he rite te rere ki te 5 ml/h);
2) te roa o te oranga, te nuinga o runga ake i te 8000h;
3) iti te mana waku, 20% ki te 30% anake o te hiri hiri;
4) karekau he nekehanga whanaungatanga i waenga i te kakau me te ringaringa o te kakau me nga hiri, kaore hoki he waku, a he roa ake te ora o te ringaringa axial me te axial;
5) ko te mata hiri o te hiri miihini e tika ana ki te tuaka papu, a ka taea e te hiri te whakaputa i te nekehanga i nga wa katoa e wiri ana te pou papu. Na reira, ka taea tonu e te wiri te pupuri i te pai o te mahi hiri ina kei roto i tetahi waahanga;
6) mechanical seal on the role of sealing liquid pressure and spring force, keep the static/dynamic ring sealing surface, and rely on the spring force to compensate for wear, so once the deployment of appropriate, in the operation of the pump in general do not need to change often, easy to use, small maintenance workload;
7) ka taea te whakamahi i roto i te pāmahana teitei, te iti o te pāmahana, te pehanga teitei, te tere tere me te pirau kaha;
8) the troubleshooting and the replacement of parts are not convenient and can only be repaired after parking;
9) he uaua te hanganga, he teitei ake te tika o te huihuinga, ko te huihuinga me te whakaurunga he whakaritenga hangarau;
10) utu hangahanga tiketike.
Whakautu: 1) te diameter o te toki: papua te waahi hiri hiri i te nuinga o te waa ko te 6-200 - mm, he mea motuhake ko te 400 mm, ko te diameter o te papu toki i te nuinga o te waa i roto i te kaha e hiahiatia ana e te porowhita, te whakamahi ranei i te whakarereke kara kia rite ki te paerewa hiri miihini. diameter o te toki;
2) tere: te tikanga, he rite te tere o te papu, ko te tere hurihuri o te papu centrifugal whanui he iti iho i te rite ranei ki te 3000r/min; Ko te tere tere tere tere he iti ake i te rite ranei ki te 8000r / min, a ko te papu motuhake he iti iho i te rite ranei ki te 4000r / min;
3) te tere porohita toharite o te mata hiri: te tere o te raina porohita o te diameter toharite o te mata mutunga hiri. Ko te tere raina toharite o te uhi hiri he nui ake mo te whakamahana me te kakahu o te mata hiri (te takirua waku). I te nuinga o te waa, ko te waahi o te hiri whakaheke he iti iho i te rite ki te 30m / s; He iti iho i te 100 mita ia hekona te tere porohita o te hiri miihini hiko o te puna. Ko te motuhake ka iti iho i te rite ranei ki te 150m/s;
4) te pēhanga ōwehenga mata: ko te mata mutunga ko te pēhanga whakapā (MPa) i raro i te mata hiri. Ko te mata mutunga o te mata hiri me whakahaere i roto i te awhe whaitake, a ka whakaitihia te mahi hiri i te rahi, ka whakamahanahia te uhi hiri ka mauhia e te huihuinga nui. Ko te hiri miihini o te papu ko te uara pehanga owehenga o te mata mutunga: hiri miihini hanga-i roto, ko te tikanga Pc = 0.3-0.6mpa; Mo te utaina o waho, Pc = 0.15-0.4mpa. He pai ake te whakahinuhinu ka taea te whakanui ake i te pehanga motuhake, ka piki ake te pokey teitei o te kiriata wai ki te mutunga o te pehanga motuhake, ka taea te Pc = 0.5 -0.7 MPa wai o te iti te wariu, me iti ake te whakahinuhinu he pehanga motuhake, he pai te watea = 0.3-0.3 MPa.
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