大家在使用電蒸汽鍋爐時(shí)，經(jīng)常發(fā)生電蒸汽鍋爐超壓的現(xiàn)象，導(dǎo)致汽壓急劇上升,超過許可工作壓力,壓力表指針超“紅線人安全閥動(dòng)作后壓力仍在升高。發(fā)出超壓報(bào)警信號(hào),超壓聯(lián)鎖保護(hù)裝置動(dòng)作使鍋爐停止送風(fēng)、給煤和引風(fēng)。造成鍋爐超壓的原因是多方面的，用汽單位忽然停止用汽,使汽壓急驟升高。司爐職員沒有監(jiān)視壓力表,當(dāng)負(fù)荷降低時(shí)沒有相應(yīng)減弱燃燒。安全閥失靈;閥芯與閥座粘連,不能開啟;安全閥進(jìn)口處連接有盲板;安全閥排汽能力不足。壓力表管堵塞、凍結(jié);壓力表超過校驗(yàn)期而失效;壓力表?yè)p壞、指針指示壓力不正確,沒有反映鍋爐真正壓力。超壓報(bào)警器失靈,超壓聯(lián)鎖保護(hù)裝置失效。經(jīng)檢驗(yàn)降壓使用的鍋爐,假如安全閥口徑?jīng)]做相應(yīng)變化（鍋爐降壓使用時(shí),安全閥口徑應(yīng)增大）,使安全閥的排汽能力不足,汽壓得不到控制而超壓。那么出現(xiàn)電蒸汽鍋爐超壓應(yīng)該如何處理呢？
1、迅速減弱燃燒,手動(dòng)開啟安全閥或放氣閥。
Weakened rapidly burning, manually open the relief valve or bleed valve.
2、加大給水,同時(shí)在下汽包加強(qiáng)排污（此時(shí)應(yīng)留意保持鍋爐正常水位）,以降低鍋水溫度,從而降低鍋爐汽包壓力。
Increase water supply, sewage while strengthening the lower drum (You should pay attention to maintaining normal boiler water level) to reduce the boiler water temperature, thus reducing the pressure on the boiler drum.
3、如安全閥失靈或全部壓力表?yè)p壞,應(yīng)緊急停爐,待安全閥和壓力表都修好后再升壓運(yùn)行。
All gauges such as safety valve failure or damage, emergency shutdown, safety valve and pressure gauge are to be repaired before the boost operation.
4、鍋爐發(fā)生超壓而危及安全運(yùn)行時(shí),應(yīng)采取降壓措施,但嚴(yán)禁降壓速度過快。
Endanger the safe operation of the boiler overpressure occurs when blood pressure measures should be taken, but too fast buck is strictly prohibited.
5、鍋爐嚴(yán)重超壓消除后,要停爐對(duì)鍋爐進(jìn)行內(nèi)、外部檢驗(yàn),要消除因超壓造成的變形、滲漏等,并檢驗(yàn)分歧格的安全附件。
Boiler overpressure serious eliminated, to the shutdown of the boiler internal and external inspection, to eliminate distortion caused by overpressure, leakage, etc., and inspection of safety accessories unqualified.
