CN207335982U - A kind of monitoring device for being used to monitor foam-water spraying control cabinet valve leak - Google Patents

Abstract

The utility model relates to the technical field of tunnel fire extinguishing, in particular to a monitoring device for monitoring the leakage of a foam-water spray control box valve. , the water immersion sensor is inductively connected to an alarm device, and the alarm device is fixedly installed outside the valve body of the deluge valve. The utility model has the advantages of: it can monitor the leakage in the control box in real time; it can respond to the tunnel control center in time for the tunnel control center to respond in time, thereby improving the safety of the control box; the structure is simple and reasonable, and it can be applied In the newly manufactured control box, for the existing control box, only a partial modification is required.

Description

A monitoring device for monitoring valve leakage of foam-water spray control box

technical field

The utility model relates to the technical field of tunnel fire extinguishing, in particular to a monitoring device for monitoring the valve leakage of a foam-water spray control box.

Background technique

In the tunnel fire protection system, the foam-water spray system is often used to extinguish the fire, which has the advantage of good fire extinguishing effect. However, in the control box of the foam-water spray system, the pipeline structure is complicated, and the connection between the valve parts and the valve parts themselves are often damaged due to long-term use or other accidents. In this way, Leakage failures are prone to occur in the control box. When a leakage fault occurs in a control box, water or foam will accumulate in the control box, which may cause damage to the control box and require further maintenance, or cause a fire. The foam-water spray system cannot be used normally, resulting in a fire. aggravation, causing harm to personnel and property.

Contents of the invention

The purpose of this utility model is to provide a monitoring device for monitoring the valve leakage of the foam-water spray control box according to the above-mentioned deficiencies in the prior art. Whether there is leakage at the location, and when leakage occurs, the alarm will be given immediately, so that maintenance personnel can respond in time, thereby ensuring the safety of the foam-water spray system.

The utility model goal is realized by the following technical solutions:

A monitoring device for monitoring valve leakage of a foam-water spray control box, the foam-water spray hole box is at least provided with a water inlet pipe, a foam stock solution pipe, and a foam mixture outlet pipe, the water inlet pipe and the foam The raw liquid pipes are respectively connected with the foam mixture outlet pipes, and the water inlet pipe is provided with a deluge valve having two chambers, front and rear, and the front chamber of the deluge valve is connected with the water inlet pipe, The rear chamber is connected with the foam mixed liquid outlet pipe, and a foam liquid electromagnetic valve is arranged in the connecting pipeline between the foam raw liquid pipe and the foam mixed liquid outlet pipe, and it is characterized in that: in the rain shower A water immersion sensor is fixedly arranged in the rear cavity of the valve, and the water immersion sensor is inductively connected to an alarm device, and the alarm device is fixedly installed outside the valve body of the deluge valve.

The alarm device has a networking module, and the alarm device forms a wireless data connection with the tunnel control center through the networking module.

The alarm device has at least an audio alarm module.

The utility model has the advantages of: it can monitor the leakage in the control box in real time; it can respond to the tunnel control center in time for the tunnel control center to respond in time, thereby improving the safety of the control box; the structure is simple and reasonable, and it can be applied In the newly manufactured control box, for the existing control box, only a partial modification is required.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The features of the utility model and other relevant features are further described in detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:

As shown in Figure 1, the numbers 1-17 in the figure represent: water inlet pipe 1, foam raw liquid pipe 2, foam mixed solution outlet pipe 3, signal butterfly valve 4, deluge valve 5, foam proportional mixer 6, swing type Check valve 7, foam liquid solenoid valve 8, filter 9, test, drain ball valve 10, foam liquid control ball valve 11, pressure regulating valve 12, leakage alarm 13, front chamber 14, rear chamber 15, water immersion sensor installation Bit 16, test drain pipe 17.

Embodiment: As shown in Figure 1, the foam-water spray control box in this embodiment is provided with three main pipelines: water inlet pipe 1, foam stock solution pipe 2, and foam mixed liquid outlet pipe 3, wherein water inlet pipe 1 and foam The raw liquid pipe 2 is connected with the foam mixed liquid outlet pipe 3 respectively, and a foam proportional mixer 6 is arranged at the connection of the three, and the water supplied by the water inlet pipe 1 and the foam stock solution supplied by the foam raw liquid pipe 2 are in the foam proportional mixer. Mix at 6 places and then supply from the outlet of the foam mixed liquid outlet pipe 3, thereby completing the output of the foam-water spray.

As shown in Figure 1, a deluge valve 5 is provided on the water inlet pipe 1, and the working state of the water inlet pipe 1 can be controlled by controlling the opening and closing of the deluge valve 5, that is, the water inlet channel is enabled or cut off. Deluge valve 5 has front cavity 14 and rear cavity 15, and when in normal servo state, deluge valve 5 is in closed state, and this moment, the front cavity 14 of deluge valve 5 is filled with pressurized water, and rear cavity 15 is vacant state. The deluge valve 5 is prone to leakage failure because its internal diaphragm is damaged, thereby causing water leakage, that is, the pressure water in the front chamber 14 enters the rear chamber 15 . In order to detect the occurrence of this water leakage failure, a water immersion sensor is installed at the water immersion sensor installation position 16 in the rear cavity 15, and the water immersion sensor is connected with the leakage alarm 13 as an alarm device, and the leakage alarm 13 Fixedly installed on the outside of the valve body of the deluge valve 5. When the pressure water enters the rear chamber 15, based on the principle of liquid conduction, the water immersion sensor can detect the entry of pressure water and convert it into a dry contact output signal and send it to the leakage alarm 13, thereby realizing a water leakage alarm.

As shown in Figure 1, a foam liquid solenoid valve 8 is arranged on the foam stock solution pipe 2. By controlling the opening and closing of the foam liquid solenoid valve 8, the working state of the foam stock solution pipe 2 can be controlled, that is, the supply channel of the foam stock solution is enabled or cut off. The foam liquid solenoid valve 8 communicates with the rear cavity 15 of the deluge valve 5 through the foam proportional mixer 6 . The foam liquid solenoid valve 8 is normally closed, the front of the valve is the pressurized foam stock solution, and the back of the valve is empty, but when the foam liquid solenoid valve 8 fails, the pressurized foam stock solution can flow into the deluge valve through the foam proportional mixer 6 Among the back cavity 15 of 5. At this time, the water immersion sensor installed in the rear cavity 15 of the deluge valve 5 can also output an alarm signal, thereby realizing the alarm of foam leakage.

As shown in Figure 1, signal butterfly valves 4 are respectively provided at the water inlet of the water inlet pipe 1 and the water outlet of the foam mixture outlet pipe 3, through which the water inlet flow of the water inlet pipe 1 and the foam The output flow of the mixture.

As shown in Figure 1, a filter 9 and a foam control ball valve 11 are arranged before the valve of the foam liquid electromagnetic valve 8, wherein the filter 9 is used to filter impurities in the foam stock solution to avoid blockage of subsequent pipelines, while the foam liquid The control ball valve 11 is used to control the opening and closing of the foam stock solution pipe 2 . A swing check valve 7 and a pressure regulating valve 12 are arranged behind the valve of the foam liquid electromagnetic valve 8. The swing check valve 7 is used to prevent the backflow of the foam liquid, and the pressure regulating valve 12 is used to regulate the foam liquid pipe 2. Output pressure to foam proportioner 6.

As shown in Figure 1, a test drain pipe 17 is also connected to the foam mixed liquid outlet pipe 3, and the test drain pipe 17 is provided with a test and drain ball valve 10 for controlling its working state, and the test drain pipe 17 is used to test the overall used in spray systems.

When this embodiment is actually implemented: the leakage alarm 13 has a networking module, which can be connected to the tunnel control center to form a wireless data connection through the networking module, so that the leakage situation can be immediately reflected to the tunnel control center, so that the tunnel control center can immediately take a response measure.

In order to further improve its alarm function, the leakage alarm 13 is also provided with a sound module. When a leak occurs, an alarm sound can be sent immediately through the sound module, which is convenient for maintenance work and maintenance work while improving the alarm effect.

Although the above embodiments have described in detail the conception and embodiments of the purpose of the utility model with reference to the accompanying drawings, those of ordinary skill in the art can recognize that the utility model can still be made without departing from the scope of the claims. There are various improvements and transformations, so details will not be repeated here.

Claims (3)

1. A monitoring device for monitoring foam-water spray control box valve leakage, at least water inlet pipe, foam stock solution pipe and foam mixed liquid outlet pipe are provided in the foam-water spray hole box, the water inlet pipe and the The foam stock solution pipes are respectively connected with the foam mixture outlet pipes, and the water inlet pipe is provided with a deluge valve with two chambers, front and rear, and the front chamber of the deluge valve is connected with the water inlet pipe Through, the rear chamber is connected with the foam mixed liquid outlet pipe, and a foam liquid electromagnetic valve is arranged in the connecting pipeline between the foam raw liquid pipe and the foam mixed liquid outlet pipe, and it is characterized in that: A water immersion sensor is fixedly arranged in the rear chamber of the deluge valve, and the water immersion sensor is inductively connected to an alarm device, and the alarm device is fixedly installed outside the valve body of the deluge valve. 2. A kind of monitoring device for monitoring foam-water spray control box valve leakage according to claim 1, characterized in that: the alarm device has a networking module, and the alarm device is connected with the tunnel control module through the networking module The hub constitutes a wireless data connection. 3. The monitoring device for monitoring the valve leakage of the foam-water spray control box according to claim 1, wherein the alarm device has at least an audio alarm module.