發(fā)電機組啟動(dòng)失敗還可能是這三大故障造成的，這里就要對發(fā)電機啟動(dòng)失敗的原因進(jìn)行了詳細分析，并提出了有效的解決措施，從而盡可能避免出現發(fā)電機啟動(dòng)失敗的問(wèn)題，以滿(mǎn)足正常生產(chǎn)需求。下面來(lái)看看吧。

The failure of generator set startup may also be caused by these three major faults. Here, we need to analyze the causes of generator startup failure in detail, and put forward effective solutions, so as to avoid the problem of generator startup failure as far as possible, so as to meet the normal production needs. Let's have a look.

點(diǎn)火控制器故障

Ignition controller failure

機組的點(diǎn)火原理：點(diǎn)火控制器按照程序中設置好的點(diǎn)火順序，依次將點(diǎn)火信號通過(guò)專(zhuān)用的低壓線(xiàn)、點(diǎn)火線(xiàn)圈、高壓線(xiàn)送至火花塞，實(shí)現各缸內的點(diǎn)火。

Ignition principle of the unit: according to the ignition sequence set in the program, the ignition controller sends the ignition signal to the spark plug through the special low-voltage wire, ignition coil and high-voltage wire in order to realize the ignition in each cylinder.

如果發(fā)電機啟動(dòng)速度達到了點(diǎn)火速度，但還是沒(méi)有點(diǎn)火的爆破聲音，應觀(guān)察點(diǎn)火控制器的指示燈，通過(guò)點(diǎn)火控制器的指示燈狀態(tài)來(lái)確認故障原因，如表1所示[3]。

If the starting speed of the generator reaches the ignition speed, but there is still no blasting sound of ignition, observe the indicator light of the ignition controller and confirm the cause of the fault through the indicator light state of the ignition controller, as shown in Table 1 [3].

若點(diǎn)火控制器出現故障，將點(diǎn)火控制器連接到PC電腦或手提編程器上，通過(guò)顯示屏上提示的點(diǎn)火系統的故障情況，參考說(shuō)明書(shū)對點(diǎn)火控制器進(jìn)行調整。

If the ignition controller fails, connect the ignition controller to the PC or portable programmer, and adjust the ignition controller by referring to the instructions according to the fault condition of the ignition system prompted on the display screen.

火花塞、點(diǎn)火線(xiàn)圈及接線(xiàn)故障

Spark plug, ignition coil and wiring failure

當點(diǎn)火控制器指示燈顯示正在點(diǎn)火，但用點(diǎn)火探照燈進(jìn)行點(diǎn)火檢查時(shí)發(fā)現，缸內未正常點(diǎn)火，這時(shí)需檢查火花塞、點(diǎn)火線(xiàn)圈及接線(xiàn)狀態(tài)。若使用塞尺檢查火花塞間隙超過(guò)大運行間隙值時(shí)，則會(huì )出現點(diǎn)火失敗現象。

When the indicator light of the ignition controller shows that the ignition is on, but it is found that the ignition in the cylinder is not normal when the ignition is checked with the ignition searchlight, then it is necessary to check the spark plug, ignition coil and wiring status. If the spark plug gap is greater than the large operating gap value by using a feeler gauge, ignition failure will occur.

另外，運行人員還需拆下火花塞，檢查其端部的積碳情況。如果火花塞間隙過(guò)大，則將其調整到規定范圍內;若火花塞端部積碳過(guò)多，則需有效清除積碳。運行人員檢查點(diǎn)火線(xiàn)圈和接線(xiàn)時(shí)，主要檢查點(diǎn)火線(xiàn)圈與高低壓線(xiàn)、火花塞與點(diǎn)火線(xiàn)圈插接是否有松動(dòng)或脫落現象，若有松動(dòng)，及時(shí)對其進(jìn)行緊固。

In addition, the operator also needs to remove the spark plug and check the carbon deposition at its end. If the spark plug gap is too large, adjust it to the specified range; If there is too much carbon deposit at the end of the spark plug, it is necessary to effectively remove the carbon deposit. When checking the ignition coil and wiring, the operator mainly checks whether the plug connection between the ignition coil and the high and low voltage wire, the spark plug and the ignition coil is loose or falling off. If it is loose, fasten it in time.

轉速傳感器故障

Speed sensor failure

控制器通過(guò)轉速傳感器測量燃氣發(fā)電機組的實(shí)際速度，結合內部設定速度及空燃比的影響因素，調節控制閥節氣門(mén)的開(kāi)度，從而控制混合氣的進(jìn)氣量，終實(shí)現速度控制。

The controller measures the actual speed of the gas generator set through the speed sensor, and adjusts the opening of the throttle valve of the control valve in combination with the internal set speed and the influencing factors of the air-fuel ratio, so as to control the intake volume of the mixture, and finally realize the speed control.

因此，轉速傳感器的轉速采集尤為重要，當轉速傳感器發(fā)生故障時(shí)，會(huì )引起發(fā)電機啟動(dòng)失敗。該轉速傳感器的電阻值應在200Ω左右，如果測試阻值不在此范圍，則傳感器發(fā)生故障的概率很大，需要更換傳感器，同時(shí)還需檢查傳感器的接線(xiàn)以及插頭，保證其連接緊固。

Therefore, the speed acquisition of the speed sensor is particularly important. When the speed sensor fails, the generator will fail to start. The resistance value of the speed sensor should be about 200 Ω. If the test resistance value is not within this range, the sensor has a high probability of failure. It is necessary to replace the sensor. At the same time, it is also necessary to check the wiring and plug of the sensor to ensure that it is firmly connected.

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