在现代消防工程中，在湿式报警阀和水流指示器供水侧应采用信号蝶阀。因此，消防信号蝶阀的用途越来越显得广泛。川消消防信号蝶阀没有信号或信号长报是怎么回事？

In modern fire protection engineering, it is recommended to use signal butterfly valve at the water supply side of wet alarm valve and water flow indicator. Therefore, the fire signal butterfly valve is more and more widely used. What's wrong with Chuanxiao fire signal butterfly valve without signal or long signal alarm?

1消防信号蝶阀的信号是靠微动开关触点的通断原理来实现的。由微动开关本身质量问题而引起的信号蝶阀故障可能发生，但不合格产品的概率很低，要判断是不是微动开关的质量问题，简单的方法就是用万用表测量，看微动开关电阻值的变化。

1 the signal of fire signal butterfly valve is realized by the on-off principle of microswitch contact. The signal butterfly valve fault caused by the quality problem of the microswitch itself may occur, but the probability of unqualified products is very low. To judge whether it is the quality problem of the microswitch, the simple method is to use a multimeter to measure and see the change of the resistance value of the microswitch.

测量人员可以先用电表测量微动开关有焊接联线的一对触点，记下电阻值，然后用手指压迫微动开关的触点簧片后，再测量这一对触点，如果电阻值发生变化，即可判断该微动开关功能正常，质量没有问题。如果有必要，可反复多测几次来验证。

The measuring personnel can first measure a pair of contacts of the microswitch with welded wires with an electric meter and record the resistance value, then press the contact reed of the microswitch with a finger, and then measure the pair of contacts. If the resistance value changes, it can be judged that the microswitch functions normally and there is no problem in quality. If necessary, repeat the test several times to verify.

假如能够验证出微动开关功能正常后，阀门启闭信号仍然没有输出，可考虑信号蝶阀的启闭是否到位。无论是手柄移动启闭阀瓣的信号阀，还是通过涡轮涡杆传动启闭阀瓣的信号阀，它们都是通过改变凹凸轮距离，来使微动开关触点的通断实现信号输出的。

If it can be verified that the valve opening and closing signal is still not output after the microswitch function is normal, it can be considered whether the opening and closing of the signal butterfly valve is in place. Whether it is the signal valve for opening and closing the valve flap by moving the handle or the signal valve for opening and closing the valve flap by driving the turbine scroll, the signal output is realized by changing the distance between the concave and convex wheels to make the micro switch contacts on and off.

因此遇到这种现象后，施工调试人员可以在全部关闭或全部开启信号阀的状况下，再用万用表测试。如电阻表仍无变化，可打开信号蝶阀传动部位的防尘罩盖，观察凹凸轮转动时和微动开关的簧片接触距离状况。

Therefore, after encountering this phenomenon, the construction and commissioning personnel can test with a multimeter under the condition that all the signal valves are closed or opened. If the resistance meter still has no change, open the dust cover of the transmission part of the signal butterfly valve and observe the contact distance between the concave cam and the reed of the microswitch when the concave cam rotates.

可能由于因搬动，运输、安装作业诸多过程的不当，受外力作用，如碰撞、震动等原因，使微动开关的距离发生移位变化，导致接触不良。如果确认微动开关的距离移位变化，可调松固定微动开关的两个小螺丝，把微动开关的距离进行适当调整。使凹凸轮体随着凹凸面的移动，使微动开关的触点能随凹凸面的变化呈现受压（通）或释放（断）的状态。

Due to improper handling, transportation and installation, the distance of the microswitch may be shifted and changed due to external forces, such as collision and vibration, resulting in poor contact. If the distance displacement of the microswitch is confirmed to change, the two small screws that fix the microswitch can be adjusted to adjust the distance of the microswitch properly. Make the concave convex wheel body move with the concave convex surface, so that the contact of the micro switch can be pressed (on) or released (off) with the change of the concave convex surface.

除了微动开关本身的问题或因微动开关及凹凸轮接触距离造成的原因。更应该重视信号输出或显示系统是否有质量的问题，因为信号输出显示系统的故障率一般很高。如这部分出现问题，就应对症处理，不用再去考虑信号蝶阀的问题了。关注我们http://www.cx-fire.com，了解更多！

In addition to the problems of the micro switch itself or the contact distance between the micro switch and the concave convex wheel. More attention should be paid to the quality of the signal output or display system, because the fault rate of the signal output and display system is generally high. If there is a problem in this part, deal with the symptom instead of considering the signal butterfly valve. Follow us http://www.cx-fire.com Yes, learn more!