在日常的消防维保工作中，有一个东西是肯定要查看的，那就是末端试水装置。那么真正的末端试水装置是咱们平时见到的样子吗？为什么大部分都设置在厕所里？诸多问题且听川消小编一一道来。

In daily fire maintenance work, there is one thing that must be checked, which is the end water testing device. So is the real end water testing device what we usually see? Why are most of them set up in the restroom? Many questions, let's listen to the editor of Chuanxiao.

在整个喷淋系统中，有的喷头距离湿式报警阀很近，有的则离的很远，高度差也有大有小，距离报警阀较远的喷头爆裂后系统的反应就会迟钝，要想测试整个系统的任何一个喷头的爆裂是否都会正常的及时启动系统，就必须要找到这个不利点，在这个点进行测试能启动系统，才能代表整个系统处于正常状态。

In the entire sprinkler system, some nozzles are very close to the wet alarm valve, while others are far away, with varying height differences. After the nozzle far from the alarm valve bursts, the system's response will become sluggish. To test whether any nozzle burst in the entire system will start the system normally and in a timely manner, it is necessary to find this unfavorable point and conduct testing at this point to start the system, Only then can it represent that the entire system is in a normal state.

在喷淋系统中这个不利点一般都是在高楼层的偏僻的角落，在这个点安装末端试水装置，就能测试出系统的可靠性了。就是说，如果这个点的喷头爆裂都可以启动系统，那么其他位置的喷头发生爆裂就更能启动系统了。

In the sprinkler system, this disadvantage is usually found in remote corners of high floors. By installing an end water testing device at this point, the reliability of the system can be tested. That is to say, if the nozzle at this point bursts, the system can be activated, and if the nozzle at other positions bursts, the system can be activated even more.

规范说：末端试水装置的出水，应采取孔口出流的方式排入排水管道 。就是说放水的时候，眼睛要能看到水在哗哗的往外流，不能直接连上一根管子直接排走（如果这样的话管子被堵住了都不知道，测试结果也就不可靠了）。

The specification states that the outlet of the end water testing device should be discharged into the drainage pipeline through the orifice. That is to say, when releasing water, the eyes should be able to see the water splashing outward, and cannot directly connect a pipe to discharge it (if this happens, the pipe is blocked and the test results are unreliable).

就是说这个地方要有下水管，如果没有下水管，你平时去检测还会随便放水吗？相当于变相给测试增加了障碍。大家都知道，一个办公楼的办公室里几乎不会设置下水装置，好的选择就是在厕所里。

That means this place needs to have a drainage pipe. If there is no drainage pipe, do you still discharge water casually when you go for testing? Equivalent to adding obstacles to testing in disguise. As we all know, there is almost no drainage system installed in the office of an office building, and a good choice is to use the toilet.

找到了末端试水装置之后，你会在其他楼层的相同位置看到试水阀。试水阀就没有要求装试水接头，这是因为其他楼层的试水阀的作用是测试该层喷淋系统的水流指示器的。

After finding the end water testing device, you will see the water testing valve at the same location on other floors. The water testing valve does not require the installation of a water testing joint, because the function of the water testing valves on other floors is to test the water flow indicator of the spray system on that floor.

在试水阀处放水，该层喷淋系统内的水就会产生流动，冲击水流指示器，触发微动开关，给消防主机一个反馈信号，就能知道水流指示器是否能正常报警了。所以你如果看到其他楼层的试水阀上没有压力表，不要说人家忘了装了，是真没必要安装压力表，也不用控制流量 。

When water is discharged at the water testing valve, the water in the spray system of this layer will flow, impact the water flow indicator, trigger the microswitch, and give a feedback signal to the fire host to determine whether the water flow indicator can alarm normally. So if you see that there is no pressure gauge on the water testing valve on other floors, don't say they forgot to install it. It's really unnecessary to install a pressure gauge or control the flow.

此外水流指示器前面都有一个信号蝶阀，规范规定两者的距离不得小于30厘米，这样做的原因，是怕距离太近，信号蝶阀的阀板会造成水流的紊流现象，影响水流指示器的正常反馈。所以试水阀放水后水流指示器不反馈还有可能是信号蝶阀被关闭了。还有什么事项就来我们网站http://www.cx-fire.com咨询吧！

In addition, there is a signal butterfly valve in front of the water flow indicator, and the specification stipulates that the distance between the two should not be less than 30 centimeters. The reason for doing so is to be afraid that the valve plate of the signal butterfly valve may cause turbulence in the water flow, affecting the normal feedback of the water flow indicator. So if the water flow indicator does not provide feedback after the water test valve is drained, it is possible that the signal butterfly valve has been closed. If there are any other matters, please come to our website http://www.cx-fire.com Consult!