燃?xì)獍l(fā)電機(jī)作為分布式能源系統(tǒng)的核心設(shè)備，其穩(wěn)定運(yùn)行直接關(guān)系到供電可靠性。在實(shí)際運(yùn)維中，設(shè)備可能因環(huán)境、燃料質(zhì)量或操作不當(dāng)引發(fā)故障。以下從專業(yè)角度解析五類典型故障及其處理方案。

　　As the core equipment of distributed energy systems, the stable operation of gas generators is directly related to the reliability of power supply. In actual operation and maintenance, equipment may malfunction due to environmental factors, fuel quality, or improper operation. Below are five typical types of faults and their solutions from a professional perspective.

　　一、點(diǎn)火系統(tǒng)失效

　　1、 Ignition system failure

　　故障現(xiàn)象：機(jī)組啟動(dòng)困難或運(yùn)行中突然熄火，伴隨點(diǎn)火線圈過熱。

　　Fault phenomenon: The unit has difficulty starting or suddenly shuts down during operation, accompanied by overheating of the ignition coil.

　　原因分析：

　　Cause analysis:

　　火花塞間隙積碳導(dǎo)致電火花強(qiáng)度不足，常見于含硅沼氣或天然氣。

　　Carbon buildup in the gap between spark plugs leads to insufficient electrical spark intensity, commonly found in silicon containing biogas or natural gas.

　　點(diǎn)火線圈絕緣層老化，在濕度高于80%環(huán)境下易引發(fā)短路。

　　The insulation layer of the ignition coil is aging, which can easily cause short circuits in environments with humidity above 80%.

　　處理方式：

　　Handling method:

　　每運(yùn)行200小時(shí)用砂紙清理火花塞電極，間隙調(diào)整至0.7-0.8mm。

　　Clean the spark plug electrode with sandpaper every 200 hours of operation, and adjust the gap to 0.7-0.8mm.

　　更換耐高溫點(diǎn)火線圈，采用環(huán)氧樹脂灌封工藝提升防潮性能。

　　Replace the high-temperature resistant ignition coil and use epoxy resin encapsulation technology to improve moisture resistance.

　　安裝點(diǎn)火能量檢測模塊，當(dāng)單次點(diǎn)火能量低于50mJ時(shí)觸發(fā)報(bào)警。

　　Install the ignition energy detection module to trigger an alarm when the single ignition energy is below 50mJ.

　　二、燃料供應(yīng)異常

　　2、 Abnormal fuel supply

　　故障現(xiàn)象：機(jī)組功率波動(dòng)超過±10%，或燃料壓力表指針劇烈擺動(dòng)。

　　Fault phenomenon: The power fluctuation of the unit exceeds ± 10%, or the fuel pressure gauge pointer swings violently.

　　原因分析：

　　Cause analysis:

　　燃料過濾器堵塞導(dǎo)致壓降超過0.5bar，常見于含雜質(zhì)生物質(zhì)氣。

　　Fuel filter blockage leads to a pressure drop exceeding 0.5 bar, commonly seen in biomass gas containing impurities.

　　燃料調(diào)壓閥膜片破裂，在0.3MPa以上壓力工況下易發(fā)生。

　　The rupture of the fuel pressure regulating valve diaphragm is prone to occur under pressure conditions above 0.3 MPa.

　　處理方式：

　　Handling method:

　　配備雙聯(lián)過濾器并聯(lián)運(yùn)行，單組堵塞時(shí)自動(dòng)切換至備用濾芯。

　　Equipped with dual filters for parallel operation, it automatically switches to the backup filter element when a single group is blocked.

　　調(diào)壓閥選型時(shí)考慮1.5倍安全系數(shù)，膜片材質(zhì)升級為氟橡膠。

　　When selecting a pressure regulating valve, consider a safety factor of 1.5 times and upgrade the diaphragm material to fluororubber.

　　安裝燃料質(zhì)量在線監(jiān)測儀，實(shí)時(shí)顯示甲烷濃度及雜質(zhì)含量。

　　Install an online fuel quality monitor to display methane concentration and impurity content in real-time.

　　三、排氣背壓過高

　　3、 Excessive exhaust back pressure

　　故障現(xiàn)象：機(jī)組排煙溫度突增至600℃以上，伴隨渦輪增壓器喘振。

　　Fault phenomenon: The exhaust temperature of the unit suddenly increases to over 600 ℃, accompanied by turbocharger surge.

　　原因分析：

　　Cause analysis:

　　催化轉(zhuǎn)化器載體堵塞，在硫含量超標(biāo)燃料中運(yùn)行2000小時(shí)后易發(fā)生。

　　Catalytic converter carrier blockage is prone to occur after 2000 hours of operation in fuels with excessive sulfur content.

　　消音器內(nèi)部填充材料板結(jié)，導(dǎo)致實(shí)際背壓超過設(shè)計(jì)值30%。

　　The internal filling material of the muffler is laminated, resulting in an actual back pressure exceeding the design value by 30%.

　　處理方式：

　　Handling method:

　　催化轉(zhuǎn)化器前加裝顆粒捕集器，每500小時(shí)用壓縮空氣反吹清理。

　　Install a particle trap before the catalytic converter and clean it with compressed air every 500 hours.

　　消音器改用不銹鋼絲網(wǎng)結(jié)構(gòu)，替換傳統(tǒng)巖棉填充材料。

　　The muffler has been replaced with a stainless steel wire mesh structure, replacing the traditional rock wool filling material.

　　安裝排氣背壓傳感器，當(dāng)壓力超過3kPa時(shí)啟動(dòng)保護(hù)性停機(jī)。

　　Install exhaust back pressure sensor and initiate protective shutdown when the pressure exceeds 3kPa.

　　四、冷卻系統(tǒng)泄漏

　　4、 Cooling system leakage

　　故障現(xiàn)象：冷卻液液位每小時(shí)下降超過0.5L，機(jī)組高溫報(bào)警頻繁觸發(fā)。

　　Fault phenomenon: The coolant level drops by more than 0.5L per hour, and the unit's high temperature alarm is frequently triggered.

　　原因分析：

　　Cause analysis:

　　水泵機(jī)械密封失效，在含氯冷卻液中腐蝕速率加快。

　　The mechanical seal of the water pump fails, and the corrosion rate accelerates in chlorine containing coolant.

　　散熱器翅片倒伏率超過20%，導(dǎo)致實(shí)際散熱面積不足設(shè)計(jì)值80%。

　　The lodging rate of the radiator fins exceeds 20%, resulting in the actual heat dissipation area being less than 80% of the design value.

　　處理方式：

　　Handling method:

　　水泵選型時(shí)采用碳化硅機(jī)械密封，耐溫范圍擴(kuò)展至150℃。

　　When selecting water pumps, silicon carbide mechanical seals are used, and the temperature resistance range is extended to 150 ℃.

　　散熱器加裝防倒伏導(dǎo)流板，每運(yùn)行1000小時(shí)用高壓水槍清理翅片間隙。

　　Install anti lodging deflectors on the radiator and clean the fin gaps with a high-pressure water gun every 1000 hours of operation.

　　冷卻系統(tǒng)改用乙二醇型防凍液，冰點(diǎn)降至-35℃以適應(yīng)極端環(huán)境。

　　The cooling system has been replaced with ethylene glycol antifreeze, with a freezing point lowered to -35 ℃ to adapt to extreme environments.

　　五、電氣系統(tǒng)接地故障

　　5、 Electrical system grounding fault

　　故障現(xiàn)象：機(jī)組控制柜報(bào)“接地故障”，絕緣電阻低于0.5MΩ。

　　Fault phenomenon: The unit control cabinet reports a "grounding fault" with insulation resistance below 0.5M Ω.

　　原因分析：

　　Cause analysis:

　　電纜接頭防水失效，在濕度95%以上環(huán)境中24小時(shí)內(nèi)即可能擊穿。

　　The waterproof failure of cable joints may cause breakdown within 24 hours in environments with humidity above 95%.

　　變頻器功率模塊絕緣損壞，常見于雷電活動(dòng)頻繁區(qū)域。

　　The insulation damage of the power module of the frequency converter is common in areas with frequent lightning activity.

　　處理方式：

　　Handling method:

　　電纜接頭采用雙層熱縮管密封，外層加裝不銹鋼防水接頭。

　　The cable joint is sealed with double-layer heat shrink tubing, and a stainless steel waterproof joint is installed on the outer layer.

　　變頻器輸入端加裝I級試驗(yàn)浪涌保護(hù)器，殘壓控制在1.5kV以下。

　　Install a Class I test surge protector at the input end of the frequency converter, with residual voltage controlled below 1.5kV.

　　每月用500V兆歐表檢測絕緣電阻，建立絕緣性能衰減曲線。

　　Use a 500V megohmmeter to measure insulation resistance every month and establish an insulation performance attenuation curve.

　　燃?xì)獍l(fā)電機(jī)的穩(wěn)定運(yùn)行依賴于預(yù)防性維護(hù)與快速故障處置的結(jié)合。通過建立設(shè)備健康檔案，實(shí)施基于狀態(tài)的維護(hù)（CBM）策略，可降低非計(jì)劃停機(jī)率60%以上。運(yùn)維人員需重點(diǎn)監(jiān)控點(diǎn)火能量、燃料壓力、排氣背壓等關(guān)鍵參數(shù)，結(jié)合紅外熱成像、振動(dòng)分析等預(yù)測性維護(hù)技術(shù)，構(gòu)建起涵蓋設(shè)計(jì)、安裝、調(diào)試、運(yùn)維全生命周期的可靠性保障體系。

　　The stable operation of gas generators relies on the combination of preventive maintenance and rapid fault handling. By establishing equipment health records and implementing state based maintenance (CBM) strategies, unplanned downtime rates can be reduced by over 60%. Operation and maintenance personnel need to focus on monitoring key parameters such as ignition energy, fuel pressure, and exhaust back pressure, and combine predictive maintenance technologies such as infrared thermography and vibration analysis to build a reliability assurance system covering the entire life cycle of design, installation, commissioning, and operation and maintenance.

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