Diesel Generator Sets: Idle Fluctuation Vs. Tsis ruaj tsis khov RPM - Qhov sib txawv tseem ceeb ntawm Ob

Diesel Generator Sets: Idle Fluctuation vs. Unstable RPM - Qhov Tseem Ceeb Qhov Sib Txawv Ntawm Ob

 

Kev txheeb xyuas qhov ua rau muaj qhov tshwm sim ntawm Diesel Generator 'Hunting' (Fluctuating Speed, Unstable, Surging) Faults

https://www.zwcummins.com/news/common-ua rau- tsom xam- ntawm- diesel-generator-su-85625490.html

Dab tsi ua rau tsis ruaj khov ceev hauv lub tshuab hluav taws xob diesel? Tom qab xyoo ntawm kev paub, nyeem qhov no yuav ua kom pom tseeb.

https://www.zwcummins.com/info/the-diesel-generator-set-s-speed-yog-normal-bu-103632300.html

 

Ob tsab xov xwm dhau los tau sib tham txog cov laj thawj rau qhov tsis ruaj khov ceev hauv lub tshuab hluav taws xob diesel teeb thiab ua rau lub tshuab hluav taws xob diesel 'kev yos hav zoov' faults, uas ua rau qee tus neeg nyeem tsis meej pem, vim tias ob qho kev txhaum ntawm lub tshuab hluav taws xob 'kev yos hav zoov' thiab tsis ruaj khov ceev yog me ntsis zoo sib xws, tab sis lawv cov laj thawj tseem txawv. Tam sim no, raws li kev paub ntau xyoo, Xiao Huang tau sau tsab xov xwm no rau sawv daws kawm thiab siv.

 

Ⅰ. Txhais thiab Intuitive Phenomena

 

1. Kev yos hav zoov (kev hloov pauv raws sijhawm)

- Cov yam ntxwv:Kev sib hloov ceev tsis tu ncua, ncua sij hawm rov qab- thiab- kev hloov pauv mus tom ntej, nrog lub voj voog ruaj khov ntawm nrawm thiab qeeb, xws li ua pa, nrog cov zaus sib xws.

- Kev tshwm sim:Lub suab voj voog ntawm "humming-pause-humming-pause," lub sij hawm oscillation ntawm zaus thiab voltage hauv sync, feem ntau pom tseeb ntawm idle / tsis muaj load.

- Xwm:Txoj cai tswj ceev ceev oscillation, tus tswv xeev dhau- kho kom raug, pheej nce thiab txo cov roj, ua rau kev co.

- Tej yam xwm txheej:mechanical Governor flyweights sticking, huab cua ingress hauv roj circuits, tsis txaus tus tswv xeev damping, ntau tus tswv xeev nce.

 

2. Ceev ceev tsis ruaj khov (random fluctuations yam tsis muaj qauv)

 

- Cov yam ntxwv:ceev tsis muaj lub voj voog ruaj khov, hloov pauv hloov pauv ntawm nrawm thiab qeeb, chaotic jitter, tsis muaj kev sib tw cyclic.

- Kev tshwm sim:ceev drifts unpredictably, tej zaum me ntsis jitter, tej zaum cia li poob / nce nyob rau hauv ceev, fluctuation ceev inconsistent.

- Essence:random abnormalities nyob rau hauv roj mov, cua kom tsawg, los yog mechanical resistance; tus tswv xeev passively them nyiaj, tsis yog tus kheej - oscillation.

- Tej yam xwm txheej:ib feem thaiv cov lim, ib tus neeg cov roj injector sticking, inconsistent lub tog raj kheej siab, cia li hloov nyob rau hauv load, xoob sensor kev twb kev txuas.

 

II. Cov lus qhia sib piv tseem ceeb

Ⅲ. Muab ob qho piv txwv ntawm -site piv txwv kom paub qhov txawv zoo dua

 

1. Tej xwm txheej ntawm kev yos hav zoov.

Huab cua nkag mus rau qhov siab - cov kab hluav taws xob siab, ua rau RPM mus rau qhov siab thiab qis txhua ob peb feeb; tus tswv xeev muaj roj tsawg dhau lawm, yog li qhov tsis ua haujlwm hloov pauv nce thiab nqis nrog gasping - qhov no suav tias yog kev yos hav zoov.

 

2. Cov ntaub ntawv yooj yim tsis ruaj khov RPM.

Lub tshuab lim cua yog ib nrab - thaiv, thiab ntxiv load ua rau RPM randomly poob; ib lub tog raj kheej lub twj tso kua mis yog daig, ua rau tsis tu ncua RPM hloov pauv - qhov no suav tias tsis ruaj khov RPM, tsis yog yos hav zoov.

 

IV. Subordination kev sib raug zoo

Txhua yam kev yos hav zoov hais txog qhov ceev tsis ruaj khov, tab sis tsis ruaj tsis khov ceev tsis tas mus yos hav zoov;
Kev yos hav zoov yog ib hom tshwj xeeb, ncua sij hawm tsis ruaj khov.
 

V. Kev Txiav Txim Yooj Yim Mnemonics

Ua tsis taus pa, cyclic co=Yos hav zoov;
random co, irregular nce thiab ntog=Yooj yim tsis ruaj tsis khov ceev.