Novel reliable tunnel foam spray valve group

Abstract

The invention provides a novel reliable tunnel foam spray valve group. The novel reliable tunnel foam spray valve group structurally comprises two fire-fighting signal butterfly valves arranged at intervals, wherein a mixed alarm structure is arranged between the two fire-fighting signal butterfly valves and comprises a groove joint, a diaphragm type deluge alarm valve, a proportional mixer and a reducing tee joint; the diaphragm type deluge alarm valve is arranged at the upper end of the groove joint; the proportional mixer is arranged at the upper end of the diaphragm type deluge alarm valve and is fixedly connected with the diaphragm type deluge alarm valve in a flange sealing manner; the reducing tee joint is arranged at the upper end of the proportional mixer; a water drainage pipe is connected to one side of the reducing tee joint; an alarm pipeline is arranged on the diaphragm type deluge alarm valve; the end part of the alarm pipeline is connected with the water drainage pipe; a pipeline water leakage detection device is arranged at the bottom of the alarm pipeline; a pressure switch and a hydraulic alarm bell are arranged at the top of the alarm pipeline; and the pipeline water leakage detection device and a foam liquid leakage detection device are arranged in a tunnel foam spray valve. According to the novel reliable tunnel foam spray valve group, pipeline water leakage and foam liquid leakage can be effectively found in time, and unnecessary loss is prevented.

Description

technical field [0001] The invention is a novel and reliable tunnel foam spray valve group, belonging to the field of tunnel foam spray valve groups. Background technique [0002] The existing tunnel foam spray valve group is prone to the following problems during long-term use: [0003] (1) Since the solenoid valve is in contact with the foam liquid for a long time, it is prone to aging or corrosion of the sealing parts, resulting in the leakage of the foam liquid; [0004] (2) Due to the relationship of time, the diaphragm of the deluge alarm valve is aging or the deluge alarm valve leaks due to other reasons. Due to the small leakage, the pressure switch or the hydraulic alarm bell cannot be activated, resulting in long-term leakage. If it cannot be discovered in time, what's more, there will be water dripping at the position of the nozzle, which will bring a lot of unnecessary losses. Contents of the invention [0005] Aiming at at least one deficiency in the prior a...

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Problems solved by technology

[0005] Aiming at at least one deficiency in the prior art, the purpose of the present invention is to provide a novel and reliable tunnel foam spray valve group to solve the problem of aging or corrosion of solenoid valve seals in the prior art due to the long-term use of the tunnel foam spray valve group. Leakage of foam liquid and aging of deluge alarm valve diaphragm or other causes of media leakage

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