J402-524-M278/ 6.2-124.5mbar美国UE 炉膛压力低低保护压力开关

H100-523美国UE压力开关现货

  炉膛正、负压保护是防止机组在运行过程中，发生异常情况，导致炉膛“内爆”、“外爆”现象，而保护锅炉安全的一个重要保护。外爆是由于炉膛内正压过大，超过锅炉水冷壁或烟风道结构强度，造成炉膛或烟风道撕裂、外鼓损坏的事故；内爆是由于炉膛负压过大，造成炉膛或烟风道被大气压力压瘪的损坏事故锅炉正压大是炉膛爆燃的前馈信号，锅炉负压大是锅炉灭火的前馈信号，因此正确判断炉膛内部的压力变化，并作出相应的、超前的保护联锁动作，使机组安全地停运，对避免造成炉膛损坏事故起着积极重要的作用。因此我们必须认真分析炉膛负压波动异常的原因，并正确、合理的设定炉膛正、负压保护定值。

J400-440 J400-441 J400-442 J400-443 J400-448

J400-449 J400-451 J400-551J402-520 J402-521 J402-522 J402-523 J402-524 J402-525 J402-530 J402-531J402-532 J402-533 J402-534 J402-535

实物图如下：

400系列J400压力开关型号表：J400-570 J400-571 J400-572 J400-S126B J400-S134B J400-S137B J400-S144BJ400-S146B J400-S156B J400-S164B J400-358 J400-361 J400-376 J400-610J400-16014 J400-614 J400-126 J400-134 J400-137 J400-144 J400-146 J400-156J400-164 J400-270 J400-274 J400-440 J400-441 J400-442 J400-443 J400-448J400-449 J400-450 J400-451 J400-452 J400-453 J400-454 J400-550 J400-551 J402-532 J402-533 J402-534 J402-535 J402-570 J402-571 J402-572 J402-S126B J402-S134B J402-S137B J402-S144B J402-S146B J402-S156B J402-S164B J402-358J402-361 J402-376 J402-610 J402-16014 J402-614 J402-126 J402-134 J402-137 J402-144 J402-146 J402-156 J402-164 J402-270 J402-274 J402-441 J402-442 J402-443 J402-448 J402-449 J402-450 J402-451 J402-452 J402-453 J402-454 J402-550 J402-551 J402-552 J402-553 J402-554 J402-555400系列三点J403压力开关型号表：J403-570 J403-571 J403-572 J403-S126B J403-S134B J403-S137B J403-S144BJ403-S146B J403-S156B J403-S164B J403-358 J403-361 J403-376 J403-610J403-16014 J403-614 J403-126 J403-134 J403-137 J403-144 J403-146 J403-156J403-164 J403-270 J403-274 J403-440 J403-442 J403-443 J403-448J403-450 J403-451 J403-452 J403-453 J403-454 J403-550 J403-551 J403-552 J403-553 J403-554 J403-555400系列H400压力开关型号表：H400-S126B H400-S134B H400-S137B H400-S144B H400-S146B H400-S156B H400-S164BH400-358 H400-361 H400-376 H400-126 H400-134 H400-137 H400-144 H400-146 H400-156H400-164 H400-270 H400-274 H400-440 H400-441 H400-442 H400-443 H400-448 H400-450H400-452 H400-453 H400-454 H400-550 H400-552 H400-553 H400-554 H400-555400系列H402双点压力开关型号表：H402-S126B H402-S134B H402-S144B H402-S146B H402-S156B H402-S164BH402-358 H402-361 H402-376 H402-126 H402-134 H402-144 H402-146 H402-156H402-164 H402-270 H402-274 H402-450 H402-452 H402-453 H402-454 H402-550 H402-552 H402-553 H402-554 H402-555400系列H403三点压力开关型号表：H403-S126B H403-S134B H403-S144B H403-S146B H403-S156B H403-S164BH403-358 H403-361 H403-376 H403-126 H403-134 H403-144 H403-146 H403-156H403-164 400系列J400K差压开关型号表：J400K-S147B J400K-S157B J400K-147 J400K-157 J400K-455 J400K-456 J400K-457 J400K-559 400系列J402K双点差压开关型号表：J402K-S147B J402K-S157B J402K-147 J402K-157 J402K-455 J402K-456 J402K-457 J402K-559J402K-540 J402K-541 J402K-542 J402K-543 J402K-544 J402K-545 J402K-546 J402K-547400系列H400K差压开关型号表：H400K-455 H400K-456 H400K-457 H400K-559 H402K-455 H402K-456 H402K-457 H402K-559400系列B400,B402，B403，C400，C402，C403温度开关型号：B400-120 B400-121 C400-120 C400-121 B402-120 B402-121 C402-120 C402-121B403-120 B403-121 C403-120 C403-121400系列E400,E402，E403温度开关型号：E400-2BSA E400-2BSB E400-3BS E400-4BS E400-5BS E400-8BSE402-2BSA E402-2BSB E402-3BS E402-4BS E402-5BS E402-8BSE403-2BSA E403-2BSB E403-3BS E403-4BS E403-5BS E403-8BS400系列F400,F402,F403温度开关型号：F400-1BS  F400-2BS  F400-3BS F400-4BS F400-5BS F400-8BSF402-1BS  F402-2BS  F402-3BS F402-4BS F402-5BS F402-8BSF403-2BS  F403-3BS F403-4BS F403-5BS F403-8BS