A tunnel foam spray valve group

Abstract

A tunnel foam spray valve group, which comprises two fire signal butterfly valves arranged at intervals, a mixed alarm structure is arranged between the two fire signal butterfly valves, the mixed alarm structure comprises a groove joint, a diaphragm deluge alarm valve, a proportioning mixer, and a reducing tee, the diaphragm deluge alarm valve is arranged at the upper end of the groove joint, the proportioning mixer is arranged at the upper end of the diaphragm deluge alarm valve, and the flange seal is adopted for fixed connection, the reducing tee is arranged at the upper end of the proportioning mixer, one side of the reducing tee is connected with a drain pipe, the diaphragm deluge alarm valve is provided with an alarm pipeline, the end of the alarm pipeline is connected with the drain pipe, a pipeline leakage detection device is arranged at the bottom of the alarm pipeline, a pressure switch and a hydraulic alarm are arranged at the top of the alarm pipeline, a pipeline leakage detection device and a foam liquid leakage detection device are arranged in the tunnel foam spray valve, pipeline leakage and foam liquid leakage are effectively and timely discovered to prevent unnecessary losses.

Description

Technical Field

[0001] The invention relates to a tunnel foam spray valve group, belonging to the field of tunnel foam spray valve groups. Background Art

[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, the sealing parts are prone to aging or corrosion, resulting in leakage of the foam liquid;

[0004] (2) Due to the passage of time, the diaphragm of the deluge alarm valve ages or other reasons cause the deluge alarm valve to leak. Due to the small leakage, the pressure switch or hydraulic alarm cannot be activated, resulting in long-term leakage and failure to detect it in time. What's worse, water drips from the sprinkler head, causing a lot of unnecessary losses. Summary of the invention

[0005] In view of at least one shortcoming existing in the prior art, the object of the present invention is to provide a tunnel foam spray valve group to solve the problems in the prior art such as foam liquid leakage due to aging or corrosion of the solenoid valve seals caused by long-term use of the tunnel foam spray valve group and medium leakage caused by aging of the rain alarm valve diaphragm or other reasons.

[0006] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical scheme: a tunnel foam spray valve group, whose structure includes two fire signal butterfly valves arranged at intervals, a mixed alarm structure is arranged between the two fire signal butterfly valves, the mixed alarm structure includes a groove joint, a diaphragm rain alarm valve, a proportioning mixer, and a reducing tee, the diaphragm rain alarm valve is arranged at the upper end of the groove joint, the proportioning mixer is arranged at the upper end of the diaphragm rain alarm valve, and is fixedly connected by flange sealing, the reducing tee is arranged at the upper end of the proportioning mixer, one side of the reducing tee is connected to a drain pipe, the diaphragm rain alarm valve is provided with an alarm pipeline, the end of the alarm pipeline is connected to the drain pipe, the bottom of the alarm pipeline is provided with a pipeline leakage detection device, the top of the alarm pipeline is provided with a pressure switch and a hydraulic alarm, the drain pipe is provided with a first pressure gauge, one side of the proportioning mixer is connected to a balancing control valve through a pipeline, the end of the balancing control valve away from the proportioning mixer is provided with a foam liquid leak detection device, and the foam liquid leak detection device is away from the balancing control valve A pilot internal threaded solenoid valve is provided at one end, a vertical check valve is connected to the lower end of the pilot internal threaded solenoid valve through an elbow, a Y-type filter is provided at the lower end of the vertical check valve, a liquid inlet ball valve is provided at the lower end of the Y-type filter, a second pressure gauge is provided on the liquid inlet ball valve, and a junction box is also included. The junction box is electrically connected to the diaphragm rain alarm valve, the pipeline leakage detection device, the pressure switch, the foam liquid leakage detection device, the fire signal butterfly valve, and the pilot internal threaded solenoid valve by wires. The pipeline leakage detection device includes a four-way connector, a drainage elbow, a first detection pipeline, and a first drainage ball valve. The drainage elbow is connected to the right end of the four-way connector. The first detection pipeline is arranged at the lower end of the four-way connector. The first drainage ball valve is arranged at the lower end of the first detection pipeline. The foam liquid leakage detection device includes a three-way connector, a second detection pipeline, and a second drainage ball valve. The second detection pipeline is arranged at the lower end of the three-way connector. The second drainage ball valve is arranged at the lower end of the second detection pipeline. A detector is horizontally fixed on one side of the first detection pipeline and the second detection pipeline.

[0007] Furthermore, the reducing tee and the proportioning mixer are fixedly connected by screws.

[0008] Furthermore, the liquid inlet ball valve is made of stainless steel.

[0009] Furthermore, the detector includes a joint, a sealing seat, a lead wire, and a detection rod. The sealing seat and the joint are nested, the inner end of the detection rod is embedded in the sealing seat, and the lead wire is connected to the rear end of the joint and connected to the detection rod.

[0010] Furthermore, a throttling orifice plate is provided inside the drainage elbow, and the throttling orifice plate plays a role of flow limiting and blocking.

[0011] Furthermore, the left end of the three-way connector is connected to the pilot internal threaded solenoid valve, and the right end is connected to the balance control valve.

[0012] Furthermore, the left end and the upper end of the four-way connector are both in communication with the alarm pipeline.

[0013] Furthermore, the drainage elbow is connected to an external discharge pipe.

[0014] The beneficial effect of the present invention is that a pipeline water leakage detection device and a foam liquid leakage detection device are arranged in the tunnel foam spray valve, so that pipeline water leakage and foam liquid leakage can be effectively and timely discovered to prevent unnecessary losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0016] Figure 1 It is a structural schematic diagram of a tunnel foam spray valve group of the present invention;

[0017] Figure 2 It is a structural schematic diagram of a pipeline leakage detection device;

[0018] Figure 3 It is a structural schematic diagram of a foam liquid leak detection device;

[0019] Figure 4 Schematic diagram of the detector structure. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] See also Figure 1 , Figure 2 , Figure 3 , Figure 4The present invention provides a technical solution for a tunnel foam spray valve group: its structure includes two fire signal butterfly valves 1 arranged at intervals, a mixed alarm structure is arranged between the two fire signal butterfly valves 1, the mixed alarm structure includes a groove joint 2, a diaphragm rain alarm valve 3, a proportioning mixer 4, and a reducing tee 5, the diaphragm rain alarm valve 3 is arranged at the upper end of the groove joint 2, the proportioning mixer 4 is arranged at the upper end of the diaphragm rain alarm valve 3, and is fixedly connected by a flange seal, the reducing tee 5 is arranged at the upper end of the proportioning mixer 4, one side of the reducing tee 5 is connected to a drain pipe 6, the diaphragm rain alarm valve 3 is provided with An alarm pipeline 7, the end of which is connected to a drain pipe 6, a pipeline water leakage detection device 8 is provided at the bottom of the alarm pipeline 7, a pressure switch 9 and a hydraulic alarm 10 are provided at the top of the alarm pipeline 7, a first pressure gauge 11 is provided on the drain pipe 6, a balancing control valve 12 is connected to one side of the proportioning mixer 4 through a pipeline, a foam liquid leakage detection device 13 is provided at one end of the balancing control valve 12 away from the proportioning mixer 4, a pilot internal threaded solenoid valve 14 is provided at one end of the foam liquid leakage detection device 13 away from the balancing control valve 12, and a vertical stop valve is connected to the lower end of the pilot internal threaded solenoid valve 14 through a bend pipe. The vertical check valve 15 is provided with a Y-type filter 16 at the lower end of the vertical check valve 15, and a liquid inlet ball valve 18 is provided at the lower end of the Y-type filter 16. The liquid inlet ball valve 18 is provided with a second pressure gauge 17, and also includes a junction box 19. The junction box 19 is electrically connected with the diaphragm rain alarm valve 3, the pipeline leakage detection device 8, the pressure switch 9, the foam liquid leakage detection device 13, the fire signal butterfly valve 1, and the pilot internal thread solenoid valve 14 by wires. The pipeline leakage detection device 8 includes a four-way connector 81, a drainage elbow 82, a first detection pipeline 83, and a first drainage ball valve 84. The drainage elbow 82 is connected to the four-way connector At the right end of the joint 81, the first detection pipeline 83 is arranged at the lower end of the four-way connector 81, the first drainage ball valve 84 is arranged at the lower end of the first detection pipeline 83, the foam liquid leak detection device 13 includes a three-way connector 131, a second detection pipeline 132, and a second drainage ball valve 133, the second detection pipeline 132 is arranged at the lower end of the three-way connector 131, the second drainage ball valve 133 is arranged at the lower end of the second detection pipeline 132, the first detection pipeline 83 and the second detection pipeline 132 are horizontally fixed with a detector 85 on one side, the reducing tee 5 is fixedly connected to the proportioning mixer 4 with screws, and the inlet

[0022] The liquid ball valve 18 is made of stainless steel, and the detector 85 includes a joint 851, a sealing seat 852, a lead wire 853, and a detection rod 854. The sealing seat 852 is nested with the joint 851, and the inner end of the detection rod 854 is embedded in the sealing seat 852. The lead wire 853 is connected by the rear end of the joint 851 and connected to the detection rod 854. A throttling orifice plate is provided inside the drainage elbow 82, and the throttling orifice plate plays a role of flow limiting and blocking. The left end of the three-way connector 131 is connected to the pilot internal threaded solenoid valve 14, and the right end is connected to the balancing control valve 12. The left end and the upper end of the four-way connector 81 are both connected to the alarm pipeline 7, and the drainage elbow 82 is connected to the external discharge pipe.

[0023] During normal operation, the water discharged by the diaphragm rain alarm valve 3 can act on the pressure switch 9, so that the pressure switch 9 is triggered and the hydraulic alarm 10 sounds an alarm. When the diaphragm rain alarm valve 3 leaks, the water flowing out cannot act on the pressure switch 9, and the leaked water flows into the first detection pipeline 83 through the four-way connector 81, submerging the detection rod 854 of the detector 85. The detector 85 feeds back the signal to the control center, and combines it with the linkage signal and the signal of the pressure switch 9 to determine whether the alarm pipeline 7 is leaking. After repair, the first drainage ball valve 84 drains the water in the first detection pipeline 83, so that the detection device is reset. The first drainage ball valve 84 also has the function of manually detecting whether water leakage occurs;

[0024] When foam liquid leaks from the pilot internal thread solenoid valve 14, the foam liquid flows into the second detection pipe 132 and submerges the detection rod 854 of the detector 85. The voltage is detected and converted into conductivity to detect whether it is foam liquid. The judgment is made by neutralizing the opening and closing signal of the pilot internal thread solenoid valve 14. When the pilot internal thread solenoid valve 14 does not receive an opening signal, the signal is reported to the system, indicating that foam liquid has leaked. When the pilot internal thread solenoid valve 14 receives an opening signal, the signal is reported to the system, indicating that the pilot internal thread solenoid valve 14 has been opened. The signal can be used as an opening feedback signal of the pilot internal thread solenoid valve 14. The second drain ball valve 133 can drain the remaining foam liquid in the second detection pipe 132 after repair or use to reset the detection device. The second drain ball valve 133 also has the function of manually detecting whether foam liquid has leaked.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tunnel foam spray valve group, characterized in that: The structure comprises two fire signal butterfly valves (1) arranged at intervals, a mixed alarm structure is arranged between the two fire signal butterfly valves (1), the mixed alarm structure comprises a groove joint (2), a diaphragm type deluge alarm valve (3), a proportioning mixer (4), and a reducing tee (5), the diaphragm type deluge alarm valve (3) is arranged at the upper end of the groove joint (2), the proportioning mixer (4) is arranged at the upper end of the diaphragm type deluge alarm valve (3), and the reducing tee (5) is arranged at the upper end of the proportioning mixer (4), and the reducing tee (5) is fixedly connected by a flange seal, the reducing tee (5) is arranged at the upper end of the proportioning mixer (4), one side of the reducing tee (5) is connected to a drain pipe (6), the diaphragm type deluge alarm valve (3) is provided with an alarm pipeline (7), and the alarm pipeline ( 7) is connected to the drain pipe (6), a pipeline water leakage detection device (8) is provided at the bottom of the alarm pipe (7), a pressure switch (9) and a hydraulic alarm (10) are provided at the top of the alarm pipe (7), a first pressure gauge (11) is provided on the drain pipe (6), one side of the proportioning mixer (4) is connected to a balancing control valve (12) through a pipeline, the end of the balancing control valve (12) away from the proportioning mixer (4) is provided with a foam liquid leakage detection device (13), the end of the foam liquid leakage detection device (13) away from the balancing control valve (12) is provided with a pilot-operated internally threaded electromagnetic valve (14), and the lower end of the pilot-operated internally threaded electromagnetic valve (14) is connected to a vertical check valve through a bend pipe. The vertical check valve (15) is provided with a Y-type filter (16) at the lower end of the vertical check valve (15), a liquid inlet ball valve (18) is provided at the lower end of the Y-type filter (16), and a second pressure gauge (17) is provided on the liquid inlet ball valve (18). The vertical check valve (15) also includes a junction box (19), and the junction box (19) is electrically connected to the diaphragm rain alarm valve (3), the pipeline leakage detection device (8), the pressure switch (9), the foam liquid leakage detection device (13), the fire signal butterfly valve (1), and the pilot internal thread electromagnetic valve (14) by wires. The pipeline leakage detection device (8) includes a four-way connector (81), a drainage elbow (82), a first detection pipeline (83), a first drainage ball valve (84), and a second pressure gauge (17). ), the drainage elbow (82) is connected to the right end of the four-way connector (81), the first detection pipe (83) is arranged at the lower end of the four-way connector (81), the first drainage ball valve (84) is arranged at the lower end of the first detection pipe (83), the foam liquid leak detection device (13) comprises a three-way connector (131), a second detection pipe (132), and a second drainage ball valve (133), the second detection pipe (132) is arranged at the lower end of the three-way connector (131), the second drainage ball valve (133) is arranged at the lower end of the second detection pipe (132), and a detector (85) is horizontally fixedly embedded on one side of the first detection pipe (83) and the second detection pipe (132); The reducing tee (5) is fixedly connected to the proportioning mixer (4) by means of screws. The liquid inlet ball valve (18) is made of stainless steel. The detector (85) comprises a joint (851), a sealing seat (852), a lead wire (853), and a detection rod (854). The sealing seat (852) and the joint (851) are nested with each other. The inner end of the detection rod (854) is embedded in the sealing seat (852). The lead wire (853) is connected to the rear end of the joint (851) and is connected to the detection rod (854). A throttling orifice plate is provided inside the drainage elbow (82). The left end of the three-way connector (131) is connected to the pilot internal threaded solenoid valve (14), and the right end is connected to the balance control valve (12). The left end and the upper end of the four-way connector (81) are both connected to the alarm pipeline (7).

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