Deluge valve group for water filling system

Abstract

The utility model discloses a deluge valve group for a water filling system, and relates to the technical field of fire fighting equipment. Comprising a valve body, a control pipeline, an alarm pipeline and an overflow pipe, a water inlet cavity, a water outlet cavity and a control cavity are formed in the valve body, a valve clack assembly is further arranged in the valve body and separates the water inlet cavity from the water outlet cavity, the control pipeline comprises a pressure supply control pipeline and a pressure relief control pipeline, one end of the pressure supply control pipeline is communicated with the control cavity, and the other end of the pressure relief control pipeline is communicated with a water supply pipeline. One end of the pressure relief control pipeline is communicated with the control cavity, the other end of the pressure relief control pipeline is communicated with the water drainage pipeline, the alarm pipeline is communicated with the water inlet cavity and the water outlet cavity through branch pipes, the height of the center line of the branch pipes of the overflow pipe is larger than that of the center line of the deluge pipeline, and the height of the center line of the branch pipes is smaller than that of the center line of the alarm pipeline. And the valve body, the control pipeline and the deluge pipeline are filled with water. The deluge valve group can meet the deluge fire-fighting requirements of industrial buildings which are flammable and explosive and can rapidly restrain fire spreading.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a deluge valve group for a water filling system. Background Art

[0002] A deluge system is a fire sprinkler system controlled by an automatic fire alarm system and transmission pipelines. It automatically activates the deluge valve and fire water supply pump, then automatically sprays water toward open sprinkler heads. Currently, deluge systems are divided into water-filled systems and empty-pipe systems, depending on whether the deluge pipeline behind the valve is filled with water. In water-filled systems, the deluge pipeline behind the valve is permanently filled with water, and the open sprinkler heads are installed upwards. This system is suitable for industrial buildings that require rapid response and rapid fire extinguishing. In empty-pipe systems, the deluge pipeline behind the valve is filled with atmospheric pressure (i.e., water-free) when no fire is occurring. The open sprinkler heads can be installed either upwards or downwards, and are generally suitable for residential buildings in areas with general fire hazards.

[0003] However, the valve bodies currently available on the market are all deluge valve groups for air pipe systems, and it is difficult to purchase valve bodies for deluge valve groups for water-filled systems. However, the deluge valve groups purchased for air pipe systems cannot meet the deluge fire protection requirements of industrial buildings that are flammable and explosive and require rapid containment of fire spread, as can the deluge valve groups of water-filled systems. Therefore, it is necessary to modify the deluge valve groups of the air pipe systems to meet the deluge fire protection requirements of industrial buildings that are flammable and explosive and require rapid containment of fire spread. Utility Model Content

[0004] The purpose of the utility model is to provide a deluge valve group for a water filling system, so as to solve the problem in the above background technology that the valve body of the deluge valve group of the water filling system is difficult to purchase and the valve body of the deluge valve group of the air pipe system is not filled with water.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a deluge valve group for a water filling system, comprising a valve body, a control pipeline, an alarm pipeline and an overflow pipe, wherein: a water inlet and a water outlet are respectively provided at both ends of the valve body, the valve body comprises a water inlet cavity, a water outlet cavity and a control cavity, a valve flap assembly is further provided in the valve body, the water inlet is located at one end of the water inlet cavity and is connected to the water supply pipeline, the water outlet is located at one end of the water outlet cavity and is connected to the deluge pipeline, and when the deluge valve group is in a quasi-working state, the valve flap assembly separates the water inlet cavity and the water outlet cavity The control pipeline includes a pressure supply control pipeline and a pressure relief control pipeline. One end of the pressure supply control pipeline is connected to the control chamber, and the pressure supply control pipeline is also connected to the water supply pipeline through a pressure supply branch pipe. One end of the pressure relief control pipeline is connected to the control chamber, and the other end of the pressure relief control pipeline is connected to the drainage pipeline through a pressure relief control valve. In the quasi-working state, the pressure relief control valve is in a closed state. When a fire occurs, the control chamber is depressurized, the pressure balance in the valve body is broken, and the valve disc assembly opens. The alarm pipeline The invention comprises a first branch pipe, a second branch pipe and a third branch pipe, wherein the first branch pipe is provided with a first stop valve capable of adjusting the water flow rate, the portion of the first branch pipe on one side of the first stop valve is connected to the water outlet chamber via a first connecting branch, the first connecting branch pipe is provided with a normally open first ball valve, the first branch pipe is connected to the water inlet chamber via a second connecting branch, and the second connecting branch pipe is provided with a normally open second ball valve, the first branch pipe extends upward and is connected to the second branch pipe, the second branch pipe extends horizontally and is connected to the third branch pipe, the third branch pipe extends downward and is connected to the drainage pipe, and a hydraulic alarm is installed on the third branch pipe; the overflow pipe comprises a fourth branch pipe and a fifth branch pipe, one end of the fourth branch pipe is connected to the deluge pipe, the fourth branch pipe extends horizontally and is connected to the fifth branch pipe, and the fifth branch pipe extends downward and is connected to the drainage pipe; the centerline height of the fourth branch pipe is higher than the centerline height of the deluge pipe, and the centerline height of the fourth branch pipe is lower than the centerline height of the second branch pipe; in the quasi-working state, the valve body, the control pipe and the deluge pipe are filled with water.

[0006] Based on the above technical features, the water supply pipeline injects water into the control pipeline through the pressure supply branch pipe, and the control pipeline is filled with water. The pressure of the control pipeline on the left side of the control chamber and the valve body on the right side of the control chamber are kept in a balanced state. The pressure balance on the left and right sides of the control chamber closes the valve disc assembly to isolate the water inlet chamber and the water outlet chamber. On this basis, in the utility model, the normally closed second ball valve in the prior art is adjusted to a normally open state. When the control pipeline is filled with water and the valve disc assembly is closed, the water flow in the water supply pipeline can also pass through the water inlet chamber, the second connecting branch, and the first stop valve on one side in sequence. The first branch pipe, the first connecting branch and the water outlet chamber continue to inject water into the deluge pipeline, and the deluge pipeline is filled with water. In addition, the flow rate of the water flowing into the deluge pipeline can be controlled by adjusting the valve opening amplitude of the first stop valve to keep a small amount of water flowing into the deluge pipeline, so as to solve the problem of water volume reduction in the deluge pipeline due to natural loss such as water evaporation in the deluge pipeline, and ultimately ensure that the deluge pipeline of the air pipe system of the utility model is always full of water, so as to meet the deluge valve group in civil buildings and also meet the deluge fire protection requirements of industrial buildings that are flammable and explosive and can quickly curb the spread of fire. Furthermore, the present invention extends the first branch pipe on the alarm line upward to connect with the second branch pipe, the second branch pipe extends horizontally to connect with the third branch pipe, and the third branch pipe extends downward, with a hydraulic alarm mounted on the third branch pipe. The second branch pipe is positioned higher than the fourth branch pipe extending horizontally from the overflow pipe. Therefore, when water is not being poured into the deluge line during a fire, excess water can flow into the drainage pipe through the fourth branch pipe extending horizontally from the overflow pipe and the fifth branch pipe extending downward. This prevents water from flowing through the third branch pipe during water pouring, potentially causing the hydraulic alarm to falsely sound. Furthermore, unlike conventional pressure switches installed on the alarm line, the present invention relocates the pressure switch from the alarm line to the control line, effectively preventing the pressure switch from activating, activating the fire pump, and sounding an alarm when water is being poured into the deluge line.

[0007] Preferably, in the present technical solution, the pressure relief control valve includes a solenoid valve, which is installed on the sixth branch pipe, and the sixth branch pipe is respectively connected to the pressure relief control pipeline and the drainage pipeline. The electrical signal of the solenoid valve is connected to the fire alarm control box, and the fire alarm control box is used to receive the electrical signal of the fire fighting and automatically control the opening and closing of the solenoid valve.

[0008] Based on the above technical features, when a fire occurs, the fire alarm control box can receive the fire fighting electrical signal in real time, and automatically control the opening of the solenoid valve to release the water in the control chamber and the pressure relief control pipeline, so that the pressure balance on the left and right sides of the control chamber is broken, the valve disc assembly automatically opens, and the fire pump supplies water to the deluge pipeline through the valve body to complete the fire fighting.

[0009] Preferably, in the present technical solution, the deluge valve group further includes a transmission pipeline network, wherein the transmission pipeline network, the pressure relief control pipeline and the pressure supply control pipeline are connected through a four-way node; the water supply pipeline is connected to the water inlet through a first gate valve, and a second stop valve and a one-way valve are sequentially installed on the pressure supply control pipeline along the water flow direction, and the second stop valve and the one-way valve are located between the four-way node and the node where the pressure supply branch pipe intersects with the pressure supply control pipeline; when the deluge valve group needs to be adjusted to a quasi-working state, the solenoid valve and the first gate valve must be closed first, and the second stop valve must be opened, and water must be injected into the control pipeline and the transmission pipeline network.

[0010] Based on the above technical features, after the deluge valve assembly has finished spraying and extinguishing a fire, it is necessary to adjust the deluge valve assembly to a quasi-operational state to meet the next use of spraying and extinguishing fires. In the present utility model, by closing the open solenoid valve and the first gate valve and opening the second stop valve, the water supply pipeline then injects water into the control pipeline and the transmission pipeline network through the pressure supply branch pipe, and the control pipeline and the transmission pipeline network are filled with water, ultimately achieving a balanced pressure state on the left and right sides of the valve body, and closing the valve disc assembly, isolating the water inlet chamber from the water outlet chamber.

[0011] In the present technical solution, preferably, the transmission pipe network is connected to the four-way node via a third stop valve, and the pressure relief control valve further includes a manual switch, which is installed on the transmission pipe network.

[0012] Based on the above technical features, when a fire occurs, the utility model can also manually open the third stop valve and the manual switch to release the water in the control chamber and the pressure relief control pipeline, so that the pressure balance on the left and right sides of the control chamber is broken, the valve disc assembly opens, and the fire pump supplies water to the deluge pipeline through the valve body to complete fire extinguishing.

[0013] In the present technical solution, preferably, a second gate valve is also installed on the pressure supply control pipeline. At the same time, along the water flow direction of the pressure supply control pipeline, the second stop valve, the one-way valve and the second gate valve are installed on the pressure supply control pipeline in sequence. A water injection hole is opened on the gate plate of the second gate valve. When the second gate valve is closed, water will still flow slowly into the transmission pipeline through the water injection hole.

[0014] Based on the above technical features, the utility model opens a small water injection hole on the gate plate of the second gate valve to ensure that a small amount of water is still slowly injected into the control pipeline and the transmission pipeline network, thereby solving the natural loss of water in the control pipeline and the transmission pipeline network due to water evaporation and other reasons, which causes a reduction in water volume. When the water loss is serious, it will eventually lead to an imbalance in the pressure in the valve body. In the absence of a fire, the valve disc assembly opens, the fire pump supplies water to the deluge pipeline through the valve body, and the deluge pipeline sprays water to extinguish the fire, causing a production safety accident.

[0015] In the present technical solution, preferably, a pressure switch is installed between the third stop valve and the four-way node, and the pressure switch can be used to start the fire pump when the pressure changes.

[0016] In the present technical solution, preferably, a first pressure gauge is installed on the pressure relief control line, and the first pressure gauge is used to observe the water pressure changes in the pressure relief control line in real time; a second pressure gauge is installed on the supply pressure control line, and the second pressure gauge is used to observe the water pressure changes on the supply pressure control line in a quasi-working state.

[0017] In the present technical solution, preferably, the height difference between the center line of the fourth branch pipe and the center line of the deluge pipe is 250 mm, and the height difference between the center line of the fourth branch pipe and the center line of the second branch pipe is not less than 50 mm.

[0018] Based on the above technical features, when a fire occurs and fire fighting is carried out, due to pressure imbalance, the valve disc assembly opens, the fire pump is started, and water is supplied to the deluge pipeline through the valve body. The pressure in the first branch pipe increases sharply, the water level in the first branch pipe rises, and flows to the third branch pipe to strike the hydraulic alarm and make a sound. The utility model controls the height difference between the center lines of the fifth branch pipe and the second branch pipe, thereby effectively avoiding the malfunction of the hydraulic alarm when water is injected into the deluge pipeline when no fire occurs.

[0019] In the present technical solution, preferably, the valve opening amplitude of the first stop valve is adjusted so that the overflow amount in the overflow pipe is maintained at 2-3 drops of water per second.

[0020] Preferably in the present technical solution, the control pipeline further comprises a temperature-sensing control pipeline, the temperature-sensing control pipeline is connected to the transmission pipeline network through a transmission valve, a temperature-sensing detection element is provided on the temperature-sensing control pipeline, the temperature-sensing detection element can sense the external temperature and control the opening of the transmission valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the configuration of the deluge valve group in the embodiment of the present utility model;

[0022] Figure 2 This is a front view of the deluge valve assembly in the embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the interior of the valve body in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the shower system in an embodiment of the present utility model.

[0025] In the figure: 1. Valve body; 11. Water inlet; 12. Water outlet; 13. Diaphragm chamber pressure gauge; 14. Water inlet chamber; 15. Water outlet chamber; 16. Control chamber; 17. Valve disc assembly; 2. Control pipeline; 21. Pressure supply control pipeline; 211. Pressure supply branch pipe; 212. Second stop valve; 213. Check valve; 214. Second gate valve; 215. Second pressure gauge; 22. Pressure relief control pipeline; 221. Solenoid valve; 223. Pressure switch; 224. First pressure gauge; 225. Sixth branch pipe; 226. Seventh branch pipe; 3. Alarm pipeline; 31. First branch pipe Pipe; 32. Second branch pipe; 33. Third branch pipe; 34. Hydraulic alarm; 35. First stop valve; 36. First ball valve; 37. Second ball valve; 38. First connecting branch; 39. Second connecting branch; 310. Fifth stop valve; 4. Overflow pipe; 42. Fourth branch pipe; 41. Fifth branch pipe; 43. Fourth stop valve; 5. Transmission pipe network; 51. Four-way node; 52. Manual switch; 53. Third stop valve; 6. Water supply pipeline; 61. First gate valve; 7. Deluge pipeline; 8. Drainage pipeline; 9. Fire alarm control box; 10. Fire detector. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] It should be noted that, in the description of the present invention, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0028] In addition, it should be understood that for the convenience of description, the sizes of the various components shown in the drawings are not drawn according to the actual scale.

[0029] It should be noted that like numbers and letters represent similar items in the following figures, so once an item is defined or described in one figure, it will not need to be further discussed and described in detail in the description of the subsequent figures.

[0030] like Figures 1 to 4As shown, the utility model provides a technical solution: a deluge valve group for a water filling system. The deluge valve group in the utility model is a deluge valve group for an air pipe system. The deluge valve group of the air pipe system is modified to meet the requirements of deluge fire protection for flammable and explosive fires and rapid control of fire spread. The deluge valve group of the hollow pipe system of the utility model includes the following components:

[0031] ① Valve body 1:

[0032] like Figure 3 As shown, the valve body 1 of the present invention utilizes a diaphragm-type deluge valve. The valve body 1 utilizes the left-right movement of a diaphragm to open and close the valve flap assembly 17. The valve body 1 has a water inlet 11 and a water outlet 12 at either end. The valve body 1 includes an inlet chamber 14, an outlet chamber 15, and a control chamber 16. The diaphragm isolates the control chamber 16 from the inlet chamber 14 and the outlet chamber 15. The valve body 1 also includes a valve flap assembly 17. The water inlet 11 is located at one end of the inlet chamber 14 and connects to the water supply line 6 through a first gate valve 61. The water supply line 6 is connected to the fire pump. The water outlet 12 is located at one end of the outlet chamber 15 and connects to the deluge line 7, which is used for fire sprinkler fire extinguishing. When the deluge valve assembly is in a semi-operating state, the valve flap assembly 17 within the valve body 1 closes, isolating the inlet chamber 14 from the outlet chamber 15.

[0033] ②Control pipeline:

[0034] The control pipeline 2 is further divided into a pressure supply control pipeline 21 and a pressure relief control pipeline 22 .

[0035] The pressure supply control line 21 is used to supply water pressure to the control line 2 to balance the pressure on the left and right sides of the control chamber 15 of the valve body 1 and close the valve flap assembly 17. Specifically, it is used to adjust the deluge valve assembly to a semi-operating state after the fire is extinguished. The pressure relief control line 22 is used to control the drainage pressure relief of the pipeline 2 to unbalance the pressure on the left and right sides of the control chamber 15 of the valve body 1 and open the valve flap assembly 17. Specifically, it is used to adjust the deluge valve assembly from a semi-operating state to an operating state when a fire occurs.

[0036] One end of the pressure control line 21 connects to the control chamber 16. It also connects to the water supply line 6 via a pressure branch pipe 211. The water supply line 6 can supply water and pressure to the control line 2 via the pressure branch pipe 211. A second shutoff valve 212, a one-way valve 213, and a second gate valve 214 are installed on the pressure control line 21, sequentially along the water flow direction. The second shutoff valve 212 and the second gate valve 214 are used to prevent water in the control chamber from flowing back into the pressure control line 21, while the one-way valve 213 prevents water from flowing back into the control chamber, causing a pressure imbalance on the left and right sides of the control chamber. After extinguishing a fire, when the deluge valve assembly needs to be adjusted to a quasi-operational state, the second shutoff valve 212 and the second gate valve 214 are opened, allowing water from the water supply line 6 to flow into the control line 2 for water pressure supply. At the same time, a second pressure gauge 215 is installed on the pressure supply control pipeline 21. The second pressure gauge 215 is used to observe the water pressure change on the pressure supply control pipeline 21 in the quasi-working state.

[0037] One end of the pressure relief control line 22 is connected to the control chamber, and the other end of the pressure relief control line 22 is connected to the drain line 8 via a pressure relief control valve. When a fire occurs, the pressure relief control valve opens, releasing pressure from the control chamber 16. Consequently, the pressures on the left and right sides of the control chamber 16 become unbalanced, causing the valve body 1 to open and the flap assembly 17 to open. The fire pump then supplies water to the deluge line 7 through the water supply line 6 and the valve body 1 to extinguish the fire. The pressure relief control line 22 is equipped with a solenoid valve 221 (a type of pressure relief control valve) and a pressure switch 223. When a fire is not occurring, the pressures on the left and right sides of the control chamber 16 are balanced, and the pressure switch 223 does not activate. When a fire occurs, the pressure in the control line 2 drops, causing the pressures on the left and right sides of the control chamber to become unbalanced. The pressure switch 223 activates (this activation refers to a pressure change, more specifically, a pressure drop), activating the fire pump and providing a feedback alarm signal. Therefore, the pressure switch 223 also indirectly monitors the open and closed status of the flap assembly 17 in real time. At the same time, a first pressure gauge 224 is installed on the pressure relief control line 22 , and the first pressure gauge 224 is used to observe the water pressure changes in the pressure relief control line 22 in real time.

[0038] ③Alarm pipeline:

[0039] The alarm pipeline 3 includes a first branch pipe 31, a second branch pipe 32 and a third branch pipe 33, wherein the first branch pipe 31 is provided with a first stop valve 35 that can adjust the water flow rate, the part of the first branch pipe 31 on the side of the first stop valve 35 is connected to the water outlet chamber through a first connecting branch 38, the first connecting branch 38 is provided with a normally open first ball valve 36, the first branch pipe 31 is connected to the water inlet chamber through a second connecting branch 39, the second connecting branch 39 is provided with a normally open second ball valve 37, the first branch pipe 31 extends upward and connects to the second branch pipe 32, the second branch pipe 32 extends horizontally and connects to the third branch pipe 33, the third branch pipe 33 extends downward and connects to the drainage pipe 8, and a hydraulic alarm 34 is installed on the third branch pipe 33.

[0040] ④ Overflow pipe:

[0041] Overflow pipe 4 includes a fourth branch pipe 42 and a fifth branch pipe 41. One end of fourth branch pipe 42 is connected to deluge line 7. Fourth branch pipe 42 extends horizontally and connects to fifth branch pipe 41. Fifth branch pipe 41 extends downward and connects to drainage pipe 8. The centerline height of fifth branch pipe 42 is higher than the centerline height of deluge line 7, which is lower than the centerline height of second branch pipe 32.

[0042] ⑤ Transmission network:

[0043] The transmission pipeline 5 is connected to the control pipeline 2 through the third stop valve 53. A manual switch 52 is installed on the transmission pipeline 5. When water pressure is supplied to the control pipeline 2, the manual switch 52 is opened to first discharge the gas in the control pipeline 2 and the transmission pipeline 5, and then water is injected into the control pipeline 2 and the transmission pipeline 5. When water flows out from the manual switch 52, the manual switch 52 is closed and the water injection is stopped.

[0044] Specifically, if Figure 1 As shown, a diaphragm cavity pressure gauge 13 is installed on the valve body 1, and the diaphragm cavity pressure gauge 13 is used to display the pressure in the valve body 1 in real time.

[0045] Specifically, if Figure 2 and Figure 3 As shown, the supply pressure control pipeline 21 and the pressure relief control pipeline 22 can be connected to the control chamber through the seventh branch pipe 226, and the pressure relief control pipeline 22 can be connected to the drain pipeline 8 through the sixth branch pipe 225. The sixth branch pipe 225 is installed with a solenoid valve 221 (a type of pressure relief control valve). The supply pressure control pipeline 21, the pressure relief control pipeline 22, the sixth branch pipe 225 and the seventh branch 226 are connected through the four-way node 51. The second stop valve 212, the one-way valve 213 and the second gate valve 214 on the supply pressure control pipeline 21 are located between the node where the supply pressure branch pipe 211 and the supply pressure control pipeline 21 intersect and the four-way node 51. The pressure switch 223 is arranged between the third stop valve 53 and the four-way contact 51. The transmission pipeline 5 is specifically connected to the four-way node 51 through the third stop valve 53.

[0046] Furthermore, in the present invention, a small water injection hole is provided on the gate plate of the second gate valve 214. When the second gate valve 214 is closed, water still flows slowly into the control pipeline 2 and the transmission pipeline network 5 through the small water injection hole. Preferably, in the embodiment of the present invention, the size of the small water injection hole provided on the valve plate of the second gate valve 214 is φ2-4 mm, specifically φ2 mm, φ3 mm, or φ4 mm. By providing the small water injection hole on the gate plate of the second gate valve 214, the present invention ensures that even when the second gate valve 214 is closed, a small amount of water still flows slowly into the control pipeline 2 and the transmission pipeline network 5 through the small water injection hole. This solves the problem of water loss in the control pipeline 2 and the transmission pipeline network 5 due to evaporation and other factors. When water loss is severe, it can eventually lead to pressure imbalance in the valve body 1. In the absence of a fire, the valve disc assembly 17 opens, and the fire pump supplies water to the deluge pipeline 7 through the valve body 1, causing the deluge pipeline 7 to spray water to extinguish the fire, thereby causing a production safety accident.

[0047] Specifically, in an embodiment of the present invention, the height difference between the centerline of the fourth branch pipe 42 and the centerline of the deluge pipe 7 is 250 mm; the height difference between the centerline of the fourth branch pipe 42 and the centerline of the second branch pipe 32 is not less than 50 mm. A commonly used embodiment of the present invention is: the height difference between the centerline of the fourth branch pipe 42 and the centerline of the second branch pipe 32 is 50 mm. When a fire occurs, due to pressure imbalance, the valve disc assembly 17 opens, the fire pump is activated, and water is supplied to the deluge pipe 7 through the valve body 1. The pressure in the first branch pipe 31 increases sharply, and the water level in the first branch pipe 31 rises and flows through the second branch pipe 32 to the third branch pipe 33, striking the hydraulic alarm 34 and sounding it. By controlling the height difference between the centerlines of the fifth branch pipe 41 and the second branch pipe 32, the hydraulic alarm 34 is effectively prevented from malfunctioning when water is supplied to the deluge pipe 7 when no fire occurs.

[0048] In the present invention, the water supply pipeline 6 injects water into the control pipeline 2 through the pressure supply branch pipe 211, and the control pipeline 2 is filled with water. The pressure of the control pipeline 2 on the left side of the control chamber 16 and the pressure in the valve body 1 on the right side of the control chamber 16 are kept in a balanced state. The pressure balance on the left and right sides of the control chamber 16 closes the valve flap assembly 17 to isolate the water inlet chamber 14 and the water outlet chamber 15. At the same time, the normally closed second ball valve 37 in the prior art is adjusted to a normally open state. When the control pipeline 2 is filled with water and the valve flap assembly 17 in the valve body 1 is closed, the water flow in the water supply pipeline 6 can pass through the water inlet chamber 14, the second connecting branch 211 and the valve body 1 in sequence. The first branch pipe 31 on one side of the first stop valve 35, the first connecting branch 38 and the water outlet chamber 15 are used to inject water into the deluge line 7, so that the deluge line 7 is filled with water. At the same time, the flow rate of the water flow is controlled by adjusting the opening amplitude of the valve of the first stop valve 35, so that a small amount of water is still filled into the deluge line 7, so as to solve the problem of water reduction in the deluge line 7 due to water evaporation and the like, and ensure that the deluge line 7 of the air pipe system of the present invention is always full of water, so as to meet the deluge fire protection requirements of industrial buildings that are flammable and explosive and can quickly curb the spread of fire in the deluge valve group in civil buildings. The first branch pipe 31 on the alarm line 3 extends upward and connects to the second branch pipe 32. The second branch pipe 32 extends horizontally to connect to the third branch pipe 33. A hydraulic alarm 34 is installed on the third branch pipe 33. The second branch pipe 32 is higher than the fourth branch pipe 42. This ensures that no water flows through the third branch pipe 33, which could cause the hydraulic alarm 34 to falsely alarm when water is not being injected into the deluge line 7 for firefighting. Simultaneously, the pressure switch 223 on the alarm line 3 is relocated to the control line 2, effectively preventing the pressure switch 223 from activating, activating the fire pump, and triggering an alarm when water is injected into the deluge line 7.

[0049] Specifically, if Figure 3 As shown, the deluge valve group in the present invention further includes a control unit, which includes a fire alarm control box 9 and a fire detector 10, wherein the fire alarm control box 9 is electrically connected to the fire detector 10.

[0050] Furthermore, if Figure 2 and Figure 3As shown, the pressure relief control valve can be a solenoid valve 221 installed on the sixth branch pipe 225, which connects the pressure relief control line 22 and the drain line 8 respectively. The solenoid valve 221 is electrically connected to the fire alarm control box 9. The fire alarm control box 9 is used to receive the fire extinguishing signal and automatically control the opening and closing of the solenoid valve 221. Specifically, when a fire occurs, the fire detector 10 will send a fire extinguishing signal to the fire alarm control box 9. Upon receiving the fire extinguishing signal, the fire alarm control box automatically controls the solenoid valve 221 to open, draining the water in the control chamber 16 and the pressure relief control line 22. The water in the control chamber 16 and the pressure relief control line 22 is discharged into the drain line 8 through the solenoid valve 221, breaking the pressure balance on the left and right sides of the control chamber 16. The valve disc assembly 17 automatically opens, and the fire pump supplies water to the deluge line 7 through the valve body to extinguish the fire.

[0051] Furthermore, if Figure 3 As shown, the pressure relief control valve can also be a manual switch 52. When a fire occurs, the third stop valve 53 and the manual switch 52 can be manually opened to release the water in the control chamber 16 and the pressure relief control pipeline 22, so that the pressure balance on the left and right sides of the control chamber 16 is broken, the valve disc assembly 17 is opened, and the fire pump supplies water to the deluge pipeline 7 through the valve body 1 to complete the fire fighting.

[0052] In other embodiments of the present invention, the control line 2 further includes a temperature-sensing control line, which is connected to the transmission pipe network 5 via a transmission valve. The temperature-sensing control line is provided with a temperature-sensing detection element that can sense the external temperature and control the opening of the transmission valve. Preferably, the temperature-sensing control element is a fusible seal, a sealing device that melts under specific conditions. Specifically, when a fire occurs and the external ambient temperature rises to a specific temperature, the fusible seal will rapidly melt, the transmission valve will open, and the water in the control chamber 16 will be discharged along the transmission pipe network 5 to the outside of the deluge valve assembly, thereby disrupting the pressure balance on the left and right sides of the control chamber 16, causing the valve disc assembly 17 to automatically open, and the fire pump will supply water to the deluge pipe 7 through the valve body to extinguish the fire.

[0053] In another embodiment of the present invention, a closed-type sprinkler head is installed on the transmission pipe network 5 and is equipped with a glass bulb. Specifically, when a fire occurs and the ambient temperature rises to a specific level, the glass bulb shatters, and water in the control chamber 16 and transmission pipe network 5 is discharged through the closed sprinkler head and out of the deluge valve assembly. This disrupts the pressure balance on both sides of the control chamber 16, automatically opening the valve flap assembly 17 and allowing the fire pump to supply water to the deluge line 7 through the valve body, thus extinguishing the fire.

[0054] After the deluge valve assembly of the present invention has finished spraying and extinguishing a fire, it is necessary to adjust the deluge valve assembly to a quasi-operating state to meet the next use of the sprinkler fire extinguishing function. Specifically, the present invention requires injecting water into the transmission pipe network 5, the control line 2, and the deluge line 7 to adjust the deluge valve assembly to a quasi-operating state. When injecting water into the transmission pipe network 5 and the control line 2, the manual switch 52 on the transmission pipe network 2 must first be opened to discharge the gas in the transmission pipe network 5 and the control line 2. Then, the solenoid valve 221 and the first gate valve 61 must be closed. At the same time, the second stop valve 212, the first gate valve 61, the third stop valve 53, and the manual switch 52 must be opened, and water must be injected into the control line 2 and the transmission pipe network 5. After water flows out of the manual switch 52, the manual switch 52 and the second gate valve 214 are closed. At this time, a small amount of water will continue to slowly inject into the control line 2 and the transmission pipe network 5 through the water injection hole to maintain the pressure balance on the left and right sides of the control chamber of the valve body 1. When injecting water into the deluge line 7, the fifth stop valve 310 needs to be closed, and the first gate valve 61, the first stop valve 35, and the fourth stop valve 43 need to be opened. Water is injected into the deluge line 7 until a small amount of water flows out of the overflow pipe 4. At this time, the valve opening amplitude of the first stop valve 35 is adjusted to maintain the overflow rate in the overflow pipe 4 at 2-3 drops of water per second, so as to solve the problem of water loss in the deluge line 7 due to water evaporation in the deluge line 7. Ultimately, it is ensured that the deluge line 7 is always full of water, so as to meet the deluge valve group in civil buildings and also meet the deluge fire protection requirements of industrial buildings that are flammable and explosive and can quickly curb the spread of fire.

[0055] In the present invention, by adjusting the normally closed second ball valve 37 in the prior art to a normally open state, when the control pipeline 2 is filled with water and the valve disc assembly in the valve body 1 is closed, the water flow in the water supply pipeline 6 can also be injected into the rain sprinkler pipeline 7 in sequence through the water inlet chamber, the second connecting branch 39, the first branch pipe 31 on the side of the first stop valve 35, the first connecting branch 38 and the water outlet chamber, so that the rain sprinkler pipeline 7 is full of water. In addition, the flow rate of the water flowing into the rain sprinkler pipeline 7 can be controlled by adjusting the opening amplitude of the valve of the first stop valve 35 to keep a small amount of water flowing into the rain sprinkler pipeline 7, so as to solve the problem of the reduction of water volume in the rain sprinkler pipeline 7 due to water evaporation and the like, and finally ensure that the rain sprinkler pipeline 7 of the air pipe system of the present invention is always full of water, so as to meet the rain sprinkler valve group in civil buildings and also meet the rain sprinkler fire protection requirements of industrial buildings that are flammable and explosive and can quickly curb the spread of fire. At the same time, the first branch pipe 31 on the alarm line 3 is extended upward and connected to the second branch pipe 32. The second branch pipe 32 is extended horizontally to connect to the third branch pipe 33. The third branch pipe 33 is extended downward and a hydraulic alarm 34 is installed on the third branch pipe 33. The second branch pipe 32 is higher than the fourth branch pipe 42 extending horizontally from the overflow pipe. Therefore, when water is not flowing into the deluge line 7 during a fire, excess water can flow into the drainage pipe 8 through the fourth branch pipe 42 extending horizontally from the overflow pipe and the fifth branch pipe 41 extending downward. When water is flowing into the deluge line, it is fully guaranteed that no water will flow through the third branch pipe 33, which could cause the hydraulic alarm 34 to falsely alarm. Furthermore, while the pressure switch 223 in the prior art is installed on the alarm line 3, the present invention relocates the pressure switch 223 from the alarm line 3 to the control line 2, effectively avoiding the problem of the pressure switch 223 being activated, activating the fire pump, and generating an alarm when water is flowing into the deluge line 7. At the same time, when a fire occurs, the fire alarm control box 9 will automatically open the solenoid valve 221 to release the pressure, or the staff will open the manual switch 52 to release the pressure, or when the external ambient temperature rises to a specific temperature, the fusible lock seal will melt and the transmission valve will open to release the pressure, or when the external ambient temperature rises to a specific temperature, the glass ball in the closed sprinkler will break, and the water in the control chamber 16 and the transmission pipe network 5 will be discharged through the closed sprinkler to the outside of the deluge valve group to release the pressure, so that the pressure in the control chamber 16 in the valve body 1 is released, the valve disc assembly 17 automatically opens, the fire pump quickly supplies water to the deluge pipeline 7, the hydraulic alarm 34 sends an alarm signal, and the deluge sprinkler sprays water to extinguish the fire.

[0056] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A deluge valve assembly for a water filling system, characterized in that: The deluge valve assembly comprises: A valve body (1), wherein both ends of the valve body (1) are respectively provided with a water inlet (11) and a water outlet (12), the valve body (1) comprises a water inlet chamber (14), a water outlet chamber (15) and a control chamber (16), and the valve body (1) is further provided with a valve flap assembly (17), the water inlet (11) is located at one end of the water inlet chamber (14) and is connected to the water supply pipeline (6), the water outlet (12) is located at one end of the water outlet chamber (15) and is connected to the deluge pipeline (7), and when the deluge valve assembly is in a quasi-working state, the valve flap assembly (17) isolates the water inlet chamber (14) from the water outlet chamber (15); A control pipeline (2), the control pipeline (2) comprising a pressure supply control pipeline (21) and a pressure relief control pipeline (22); One end of the pressure supply control line (21) is connected to the control chamber (16), and the pressure supply control line (21) is also connected to the water supply line (6) through the pressure supply branch pipe (211); one end of the pressure relief control line (22) is connected to the control chamber (16), and the other end of the pressure relief control line (22) is connected to the drainage line (8) through the pressure relief control valve; in the quasi-working state, the pressure relief control valve is in a closed state. When a fire occurs, the pressure relief control valve is opened to relieve the pressure in the control chamber (16), the pressure balance in the valve body (1) is broken, and the valve disc assembly (17) is opened; An alarm pipeline (3), the alarm pipeline (3) comprising a first branch pipe (31), a second branch pipe (32) and a third branch pipe (33), the first branch pipe (31) being provided with a first stop valve (35) capable of regulating water flow, the portion of the first branch pipe (31) on one side of the first stop valve (35) being connected to the water outlet chamber (15) via a first connecting branch (38), the first connecting branch (38) being provided with a normally open first ball valve (36), the first branch pipe (31) being connected to the water inlet chamber (14) via a second connecting branch (39), the second connecting branch (39) being provided with a normally open second ball valve (37), the first branch pipe (31) extending upward and being connected to the second branch pipe (32), the second branch pipe (32) extending horizontally and being connected to the third branch pipe (33), the third branch pipe (33) extending downward and being connected to the drainage pipeline (8), the third branch pipe (33) being provided with a hydraulic alarm bell (34); An overflow pipe (4), the overflow pipe (4) comprises a fourth branch pipe (42) and a fifth branch pipe (41), one end of the fourth branch pipe (42) is connected to the deluge pipe (7), the fourth branch pipe (42) extends horizontally and is connected to the fifth branch pipe (41), and the fifth branch pipe (41) extends downward and is connected to the drainage pipe (8); the centerline height of the fourth branch pipe (42) is higher than the centerline height of the deluge pipe (7), and the centerline height of the fourth branch pipe (42) is lower than the centerline height of the second branch pipe (32); in a quasi-working state, the valve body (1), the control pipe (2) and the deluge pipe (7) are filled with water.

2. A deluge valve assembly for a water filling system according to claim 1, characterized in that: The pressure relief control valve comprises a solenoid valve (221), which is installed on a sixth branch pipe (225). The sixth branch pipe (225) is connected to the pressure relief control pipeline (22) and the drainage pipeline (8) respectively. The solenoid valve (221) is electrically connected to a fire alarm control box (9). The fire alarm control box (9) is used to receive an electrical signal for fire fighting and automatically control the opening and closing of the solenoid valve (221).

3. A deluge valve assembly for a water filling system according to claim 2, characterized in that: The deluge valve assembly further comprises a transmission pipe network (5), wherein the transmission pipe network (5), the pressure relief control pipeline (22) and the pressure supply control pipeline (21) are connected via a four-way node (51); The water supply pipeline (6) is connected to the water inlet (11) via a first gate valve (61), and a second stop valve (212) and a one-way valve (213) are sequentially installed on the pressure supply control pipeline (21) along the water flow direction, and the second stop valve (212) and the one-way valve (213) are located between the four-way node (51) and the node where the pressure supply branch pipe (211) intersects with the pressure supply control pipeline (21); When the deluge valve assembly needs to be adjusted to a quasi-working state, the solenoid valve (221) and the first gate valve (61) must first be closed, and the second stop valve (212) must be opened to inject water into the control pipeline (2) and the transmission pipeline (5).

4. A deluge valve assembly for a water filling system according to claim 3, characterized in that: The transmission pipe network (5) is connected to the four-way node (51) via a third stop valve (53), and the pressure relief control valve further includes a manual switch (52), which is installed on the transmission pipe network (5).

5. The deluge valve assembly for a water filling system according to claim 3, characterized in that: A second gate valve (214) is also installed on the pressure control pipeline (21). At the same time, along the water flow direction of the pressure control pipeline, the second stop valve (212), the one-way valve (213) and the second gate valve (214) are installed on the pressure control pipeline in sequence. A water injection hole is opened on the gate plate of the second gate valve (214). When the second gate valve (214) is closed, water will still flow slowly into the transmission pipe network (5) through the water injection hole.

6. The deluge valve assembly for a water filling system according to claim 4, characterized in that: A pressure switch (223) is installed between the third stop valve (53) and the four-way node (51). The pressure switch (223) can be used to start the fire pump when the pressure changes.

7. The deluge valve assembly for a water filling system according to claim 3, characterized in that: A first pressure gauge (224) is installed on the pressure relief control line (22), and the first pressure gauge (224) is used to observe the water pressure change in the pressure relief control line (22) in real time. A second pressure gauge (215) is installed on the pressure supply control line (21), and the second pressure gauge (215) is used to observe the water pressure change on the pressure supply control line in a quasi-working state.

8. The deluge valve assembly for a water filling system according to claim 1, characterized in that: The height difference between the center line of the fourth branch pipe (42) and the center line of the deluge pipe (7) is 250 mm, and the height difference between the center line of the fourth branch pipe (42) and the center line of the second branch pipe (32) is not less than 50 mm.

9. The deluge valve assembly for a water filling system according to claim 1, characterized in that: The valve opening amplitude of the first stop valve (35) is adjusted so that the overflow amount in the overflow pipe (4) is maintained at 2-3 drops of water per second.

10. The deluge valve assembly for a water filling system according to claim 3, characterized in that: The control pipeline (2) further comprises a temperature sensing control pipeline, the temperature sensing control pipeline being connected to the transmission pipeline network (5) via a transmission valve, and a temperature sensing detection element being provided on the temperature sensing control pipeline, the temperature sensing detection element being able to sense the external temperature and control the opening of the transmission valve.

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