A rain shower alarm valve system capable of preventing mis-spraying, mis-opening and resisting vibration

Abstract

A deluge alarm valve system with anti-accidental spraying / opening and vibration resistance includes an upper valve body and a lower valve body with interconnected shell structures. A valve control device is installed between the upper and lower valve bodies. The inlet, outlet, and valve core of the deluge alarm valve are arranged along the same axis. The valve control device controls the opening and closing of the outlet by controlling the valve core position through pressure water connected to the inlet. The valve control device has a water-air common pipeline device. When the valve is open, the pressure water of the valve control device enters and exits the air; when it is closed, the pressure water of the valve control device exits the water and enters the air, forming a dual-force opening and closing mechanism of water and air. The valve control device has four control chambers along the valve stem to prevent water hammer vibration during the opening and closing process of the valve core. This invention forms a dual-force opening and closing mechanism of water and air through the valve control device. The higher the water pressure, the better the sealing effect of the deluge alarm valve system. The fast opening and closing speed prevents accidental spraying / opening caused by water pressure changes, and the four control chambers prevent water hammer vibration during the opening and closing process of the valve core.

Description

Technical Field

[0001] This application relates to the field of fire extinguishing valve technology, and more specifically, to a deluge alarm valve system that is resistant to accidental spraying and opening and vibration. Background Technology

[0002] Deluge alarm valve systems, as key fire-fighting equipment in high-risk industrial locations, are widely used in environments such as metallurgy, chemical industry, power facilities, and large warehouses, especially in early-stage suppression and rapid response systems where they play a core fire-extinguishing role. These systems need to be adapted to pressure ratings of 1.6 MPa or 2.5 MPa based on the pressure characteristics of the water supply network, and the DN100 to DN300 diameter specifications are determined according to actual flow requirements and nozzle layout. In chemical production areas and explosion-hazardous locations, the system must possess reliable anti-misoperation and seismic resistance performance. Traditional designs typically rely on anti-reset mechanisms and foundation damping buffer mechanisms to cope with vibration interference. However, as modern industry continues to increase its requirements for the response speed, stability, and safety of fire-extinguishing systems, existing deluge alarm valves have revealed significant defects in large and complex environments: the valve core opening and closing process is easily affected by external vibrations, resulting in unexpected displacement and frequent accidental spraying or opening; simultaneously, conventional buffer structures are unable to effectively suppress the mechanical impact during valve stem movement, causing severe vibrations during system start-up and shutdown, which not only affects sealing reliability but may also lead to accidental valve closure or failure to reset, seriously threatening the continuity and safety of fire-fighting operations. Optimizing the overall performance of fire-fighting equipment to prevent accidental spraying, accidental activation, and vibration resistance has become a key challenge in current fire-fighting equipment research and development. Existing technologies urgently need improvement to address these issues. Summary of the Invention

[0003] The purpose of this application is to provide a rain alarm valve system and operation method that is anti-accidental spraying and opening and vibration resistant, which has the advantages of effectively preventing vibration during the opening and closing process of the valve core, reducing accidental spraying and opening, and improving system stability and safety.

[0004] This application provides a deluge alarm valve system that prevents accidental spraying and opening, and is vibration-resistant. The system includes a deluge alarm valve connected to a sprinkler pipe, which is also connected to an alarm piping system and a control piping system. The deluge alarm valve comprises an upper valve body and a lower valve body with interconnected shell structures. A valve control device is located between the upper and lower valve bodies. The inlet, outlet, and valve core of the deluge alarm valve are aligned axially. The valve control device controls the opening and closing of the outlet by opening and closing the valve core using pressurized water connected to the inlet. The valve control device has a water-air communication pipeline; when open, pressurized water enters and exits the valve; when closed, pressurized water exits and enters the valve, creating a dual-force opening and closing mechanism. The valve control device has four control chambers along the valve stem to prevent vibration during the valve core's opening and closing process. This invention achieves dual-force opening and closing through the valve control device. The higher the water pressure, the better the sealing effect of the deluge alarm valve system. The fast opening and closing speed prevents accidental spraying and opening caused by water pressure changes, and the four control chambers prevent water hammer vibration during the valve core's opening and closing process.

[0005] The valve control device includes an inner ring and an outer ring connected by two or more reinforcing ribs. The inner ring has an axially arranged central mounting hole, in which a valve stem is mounted. One end of the valve stem is axially connected to an upper piston assembly, and the other end is connected to a lower piston assembly. The upper piston assembly includes a valve core assembly arranged vertically and an upper piston, and the lower piston assembly also includes a valve core assembly arranged vertically and an upper piston. The valve core assembly, the first piston, and the valve stem, together with the upper inner ring on the upper side of the inner ring, form a first cavity. The first piston, the valve stem, and the upper inner ring, together with the upper outer periphery of the central mounting hole, form a second cavity. The lower outer periphery of the central mounting hole, the valve stem, and the lower inner ring on the lower side of the inner ring, together with the lower piston assembly, form a third cavity. The lower piston assembly, the valve stem, and the lower inner ring, together with a threaded elastic adjustment cover of the lower inner ring, form a fourth cavity. The four control cavities are the first cavity, the second cavity, the third cavity, and the fourth cavity.

[0006] The fourth cavity is connected to the second air hole that penetrates the valve stem radially through the first air hole inside the valve stem. The second air hole is connected to the second cavity. The second cavity is connected to the inclined hole that penetrates the upper inner ring, the outer ring, and a reinforcing rib. The inclined hole is connected to the atmosphere and the control pipeline system through a tee connector to form a water and air communication pipeline device.

[0007] A pressure spring is installed between the lower piston assembly and the elastic adjustment cover. The pressure spring exerts an axial thrust on the lower piston assembly. The magnitude of the thrust is determined by the degree of engagement between the elastic adjustment cover and the lower inner ring.

[0008] The third cavity is connected to a connecting hole located inside another reinforcing rib. The connecting hole is connected to a first pipe, which is connected to a control pipeline system.

[0009] The control pipeline system includes a first tee connector and a second tee connector. One end of the straight pipe section of the first tee connector is connected to the first pipeline, and the other end is connected to the solenoid valve through a pipeline. The middle branch pipe of the first tee connector is connected to one end of the manual control valve, and the other end of the manual control valve is connected to the second tee connector. One end of the straight pipe section of the second tee connector is connected to the solenoid valve, and the other end is connected to the first outlet of the deluge alarm valve through a pipeline.

[0010] The lower valve body has a base at the bottom, with an inlet in the middle and a first outlet and a second outlet on each side. The upper valve body has a valve seat at the top, with an outlet in the middle and a third outlet and a fourth outlet on each side. A valve cover that seals the outlet is connected to the middle of the valve seat, and the third outlet is connected to the spray pipe.

[0011] The alarm piping system includes a normally closed valve connected to the second water outlet. The normally closed valve is connected to one end of a pressure-sensing alarm bell via a pipe. The other end of the pressure-sensing alarm bell is connected to one end of a normally open valve via a pipe. The other end of the normally open valve is connected to the fourth water outlet via a second pipe.

[0012] The valve core assembly includes a lower sealing seat and an upper sealing seat that are threadedly connected to the valve stem. The lower sealing seat and the upper sealing seat clamp and connect a sealing ring. The sealing ring is lined with a steel ring, and the outer circumference of the steel ring is covered with rubber to form a soft and hard combination structure.

[0013] The operation method of a deluge alarm valve system that prevents accidental spraying and opening, and is vibration-resistant, is as follows: When a fire occurs, either the manual valve or the solenoid valve of the control pipeline system is opened. Pressurized water flows through the first outlet, through the first pipe, and through the connecting hole into the third cavity. This drives the lower piston assembly to move downward, compressing the air and pressure spring in the fourth cavity. The lower piston assembly then drives the valve stem to move downward, causing the valve core assembly to open the seal between the outlets. The pressurized water from the inlet flows through the upper and lower valve bodies and out of the third outlet into the sprinkler pipe for fire extinguishing. Simultaneously, as the valve stem moves downward, the pressurized water applies downward water pressure to the valve core assembly and the first piston, expanding the first cavity while shrinking the second cavity. The air in the second and fourth cavities simultaneously passes through the water-air common channel. The venting through the oblique holes in the piping system allows the valve core assembly to open smoothly and quickly without vibration. After the fire is extinguished, the valve core assembly needs to be reset to prevent accidental spraying or opening. First, the manual control valve and solenoid valve are closed. The pressurized water in the third cavity is discharged through the pipe to reduce the pressure. Then, the piston assembly in the fourth cavity expands under the action of the pressure spring, driving the valve stem to move upward, which in turn moves the valve core assembly upward until the outlet is closed. During this process, the pressurized water in the first cavity assists in driving the valve core assembly upward. At the same time, the oblique holes in the water-air-water-connected piping system inject water into the second and fourth cavities through the pressurized water connected to the piping system, creating upward driving force for the valve core assembly and preventing accidental spraying or opening caused by the inability to close the valve core assembly.

[0014] As can be seen from the above, the rain alarm valve system and operation method provided in this application, which is designed to prevent accidental spraying and opening and is vibration resistant, achieves opening and closing by the dual action of water and air through a valve control device and a water-air common pipeline device. It is also equipped with four control chambers to prevent vibration, and has the advantages of effectively preventing vibration during the opening and closing process of the valve core, reducing accidental spraying and opening, and improving system stability and safety. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the structure of a rain alarm valve system for preventing accidental spraying and opening and resisting vibration according to the present invention;

[0017] Figure 2 This is a structural schematic diagram from another perspective of the rain alarm valve system for preventing accidental spraying and opening and resisting vibration according to the present invention;

[0018] Figure 3 This is a cross-sectional view of the rain alarm valve in this invention;

[0019] Figure 4 This is a schematic diagram of the rain alarm valve in the open state in this invention;

[0020] Figure 5 This is a schematic diagram of the state structure of the rain alarm valve during the reset process in this invention;

[0021] Figure 6 This is a schematic cross-sectional view of the sealing ring structure in this invention. Detailed Implementation

[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Traditional deluge alarm valve systems face challenges in preventing accidental discharge, accidental activation, and vibration suppression when applied to high-risk environments such as metallurgy, chemical industry, power generation, and large warehouses, where stringent requirements for fire extinguishing efficiency and safety are increasingly demanding. Existing technologies struggle to effectively meet the needs of these environments for high quality, high efficiency, anti-reset mechanisms, and damping buffering. Therefore, improving the technical level of preventing accidental discharge, accidental activation, and vibration suppression has become an urgent problem to be solved.

[0025] To address this issue, this application proposes a deluge alarm valve system that prevents accidental spraying and opening, and is vibration-resistant. The system includes a deluge alarm valve connected to a sprinkler pipe 1, which is also connected to an alarm piping system and a control piping system 12. The deluge alarm valve comprises an upper valve body 3 and a lower valve body 8 with their shells connected vertically, and a valve control device 2 is located between the upper valve body 3 and the lower valve body 8. The inlet 28, outlet 43, and valve core of the deluge alarm valve are arranged along the same axial direction. The valve control device controls the opening and closing of the outlet by controlling the valve core position through pressure water connected to the inlet. The valve control device has a water-air common pipeline; when open, the pressure water enters and exits the valve control device; when closed, the pressure water exits and enters the valve control device, forming a dual-force opening and closing mechanism. The valve control device has four control chambers along the valve stem to prevent vibration during the valve core opening and closing process.

[0026] For ease of understanding, the following explains some key terms in this embodiment:

[0027] The deluge alarm valve, as a core component of the fire sprinkler system, is used to quickly open in the event of a fire, allowing the extinguishing medium to enter the sprinkler pipe 1 for fire suppression.

[0028] Sprinkler pipe 1, which is connected to the outlet of the deluge alarm valve, delivers the extinguishing medium to the sprinkler head to achieve fire extinguishing coverage of the protected area.

[0029] The alarm piping system, which is connected to the deluge alarm valve, is used to send an alarm signal when the valve is activated, indicating the occurrence of a fire and the activation of the fire extinguishing system.

[0030] The control piping system 12 is connected to the deluge alarm valve and is used to receive external control signals to control the opening and closing of the deluge alarm valve.

[0031] The upper valve body 3 and the lower valve body 8 constitute the shell structure of the rain alarm valve. The interior forms a flow channel and a space to accommodate the valve control device 2, realizing the flow of the medium and the movement of the valve core.

[0032] Valve control device 2, as the core control unit of the rain alarm valve, achieves precise control of the valve core position through internal structure and fluid control, thereby controlling the on / off connection between the inlet 28 and the outlet 43.

[0033] Inlet 28, which serves as the medium inlet for the deluge alarm valve, is typically connected to the water supply line to provide pressurized water required for fire extinguishing.

[0034] The outlet 43, which serves as the medium outlet of the deluge alarm valve, is typically connected to the sprinkler pipe 1 to deliver pressurized water to the sprinkler area.

[0035] The valve core, as a key component inside the deluge alarm valve, controls the flow of fire extinguishing media by moving on the valve seat to open or close the flow channel.

[0036] The water and gas co-flow pipeline device, as a special pipeline design inside the valve control device 2, allows water and gas to flow through it. It is used to discharge gas and introduce pressurized water when the valve is open, and to discharge pressurized water and introduce gas when the valve is closed, so as to achieve smooth and rapid operation of the valve core.

[0037] The four control chambers, which are independent chambers arranged along the valve stem of the valve control device 2, apply forces to the valve stem, piston, and valve core through internal pressure changes, so as to balance the forces on the valve core during the opening and closing process and thus suppress vibration.

[0038] This embodiment provides a deluge alarm valve system that prevents accidental spraying and opening, and is vibration-resistant. The system includes a deluge alarm valve configured to connect to a sprinkler pipe 1 to deliver extinguishing media to the sprinkler pipe 1 when needed. The deluge alarm valve is also connected to an alarm piping system and a control piping system 12. The alarm piping system can be configured to emit a signal when the valve is activated, for example, via a mechanical bell or electronic sensor. The control piping system 12 can be configured to control the opening and closing of the valve via manual operation or remote commands, for example, via a simple switch or lever mechanism.

[0039] The structure of this deluge alarm valve includes an upper valve body 3 and a lower valve body 8, which are connected vertically to form a housing structure. A valve control device 2 is installed between the upper valve body 3 and the lower valve body 8. The upper valve body 3 and the lower valve body 8 can be fixed by bolts or welding to ensure their sealing and structural strength. The valve control device 2 can be designed as a detachable module for easy maintenance and replacement.

[0040] Specifically, the inlet 28, outlet 43, and valve core of this deluge alarm valve are designed to be arranged along the same axis. This axial arrangement simplifies the internal flow channel design of the valve body. For example, the inlet 28 can be located at the bottom of the valve body, the outlet 43 at the top, and the valve core can move up and down along this axis. This layout facilitates smooth flow of the medium and reduces flow resistance.

[0041] Furthermore, the valve control device 2 controls the position of the valve core by connecting to pressurized water from the same source as the inlet 28, thereby controlling the opening and closing of the outlet 43. For example, the valve control device 2 may contain a simple piston or diaphragm. When pressurized water enters a specific chamber of the valve control device 2, the piston or diaphragm moves, thereby actuating the valve core. The introduction and discharge of pressurized water can be controlled by a simple manual valve.

[0042] In a preferred embodiment, the valve control device 2 includes a water-gas co-current pipeline. When the valve is open, this pipeline allows pressurized water to enter and gas to exit within the valve control device 2, thereby assisting in the opening of the valve core. When the valve is closed, the pipeline allows pressurized water to exit and gas to enter within the valve control device 2, thereby assisting in the closing of the valve core. This creates a water-gas dual-force opening and closing mechanism. For example, this pipeline can consist of a series of simple pipes and check valves to achieve alternating flow of water and gas.

[0043] Furthermore, to prevent vibration of the valve core during opening and closing, the valve control device 2 is provided with four control chambers along the valve stem. These control chambers can be designed as independent volumetric spaces, for example, by setting multiple annular chambers around the valve stem. When the valve core moves, the pressure in these chambers changes, thereby generating a balancing force on the valve stem. The pressure changes in the chambers can be regulated, for example, by using simple throttling orifices or buffer pads, to mitigate the impact on the valve core.

[0044] The deluge alarm valve system of this application, by setting the inlet, outlet, and valve core along the same axis and utilizing the water-air dual-force opening and closing mechanism of the valve control device, combined with four control chambers arranged along the valve stem, effectively solves the problems of easy vibration during valve core opening and closing and insufficient anti-accidental spraying and opening performance in existing deluge alarm valves used in large, high-risk locations. Therefore, this system can achieve smooth and rapid valve core operation, improving system reliability and safety, and meeting the requirements for high-quality and efficient fire suppression.

[0045] In some embodiments of this application, the valve control device of the deluge alarm valve has four control chambers along the valve stem to prevent vibration of the valve core during opening and closing. However, if the structural design of these control chambers is not precise enough or their cooperation with the valve body and piston assembly is unclear, it may lead to inaccurate pressure regulation of the control chambers, which in turn affects the smooth movement of the valve core and may even fail to effectively suppress vibration, thereby reducing the reliability and safety of the system.

[0046] In this regard, this application further proposes that the valve control device 2 includes an inner ring body and an outer ring body 34 connected by two or more reinforcing ribs 36. The inner ring body is provided with an axially arranged central mounting hole 37, and a valve stem 45 is installed in the central mounting hole 37. One end of the valve stem 45 is axially connected to an upper piston assembly, and the other end is connected to a lower piston assembly. The upper piston assembly includes a valve core assembly and a first piston 39 arranged vertically, and the lower piston assembly includes a valve core assembly and a first piston 39 arranged vertically. The valve core assembly, the first piston 39, and the valve stem 45 cooperate with the upper inner ring body 22 on the upper side of the inner ring body to form a shape. The first cavity 60 is formed; the first piston 39, valve stem 45, and upper inner ring 22 cooperate with the upper outer circumferential side 61 of the center mounting hole 37 to form the second cavity 38; the upper outer circumferential side 62 of the center mounting hole 37, the lower inner ring 33 of the valve stem 45 and the lower inner ring 33 cooperate with the lower piston assembly to form the third cavity 51; the lower piston assembly 24, valve stem 45, and lower inner ring 33 cooperate with the elastic adjustment cover 26 of the lower inner ring 33 connected by threads to form the fourth cavity 31. The four control cavities are the first cavity 60, the second cavity 38, the third cavity 51, and the fourth cavity 31.

[0047] Specifically, the overall structure of the valve control device 2 is formed by an inner ring body, an outer ring body 34, and reinforcing ribs 36 connecting them, creating a robust and stable frame. This design ensures that the valve control device 2 maintains its geometric stability and precise alignment between components when subjected to internal fluid pressure and external mechanical stress, providing fundamental support for the smooth movement of the valve stem 45 and the effective sealing of each control chamber. There are two or more reinforcing ribs 36, designed to further enhance the rigidity and deformation resistance of the structure, thereby improving the overall reliability and service life of the valve control device 2. The central mounting hole 37 is a precision hole axially located inside the inner ring body, its main function being to provide precise guidance and support for the valve stem 45. The valve stem 45 slides axially within the central mounting hole 37; this fit ensures the straightness and stability of the valve stem 45 during movement, preventing increased friction or sealing failure due to skewing or wobbling. Precise fit clearance is crucial for reducing movement resistance, improving response speed, and preventing vibration during valve core opening and closing. The valve stem 45, as the core component connecting the upper and lower piston assemblies, is responsible for transmitting driving force to the valve core assembly, thereby opening and closing the valve core. The upper and lower piston assemblies are located at opposite ends of the valve stem 45. Their connection to the valve stem 45 typically employs threaded connections, pin connections, or integral molding to ensure that the piston assemblies can stably drive the valve stem 45 axially under fluid pressure. This connection method allows the valve stem 45 to coordinately control the movement of the upper and lower piston assemblies, thereby precisely adjusting the position of the valve core. The upper piston assembly is an important component of the valve control device 2, working in conjunction with the valve core assembly and the first piston 39. The valve core assembly is responsible for forming a sealed relationship with the outlet 43, controlling the flow of fluid. The first piston 39, as a pressure-sensitive element, experiences different fluid pressures on its upper and lower surfaces, generating driving force to push the valve stem 45 and the valve core assembly. The vertical arrangement of the valve core assembly and the first piston 39 allows them to form specific cavities, and the pressure changes within these cavities precisely control the movement of the valve core. The lower piston assembly is another key component of the valve control device 2. It works in conjunction with the valve stem 45, the lower inner ring 33, and the spring-loaded adjusting cover 26 to form the lower drive and support structure of the valve core. The lower piston assembly generates driving force by bearing fluid pressure or spring force, assisting the axial movement of the valve stem 45. Its internal structure and connection method with the valve stem 45 are designed to ensure stable support and precise positioning during valve core closing or opening. Especially during reset operations, the movement of the lower piston assembly is crucial for the reliable closure of the valve core.

[0048] The first cavity 60 is an important control chamber inside the valve control device 2, and its boundary is jointly defined by the valve core assembly, the first piston 39, the valve stem 45, and the upper inner ring 22 on the upper side of the inner ring body. Pressure changes within this cavity directly affect the force state of the valve core assembly and the first piston 39, thereby driving the valve stem 45 to move. By precisely controlling the fluid pressure within the first cavity 60, fine adjustment of the valve core opening or closing process can be achieved. Especially when the valve core is open, the pressurized water within this cavity can assist the valve core in moving downwards, providing a stable driving force. The second cavity 38 is another key control chamber, jointly enclosed by the first piston 39, the valve stem 45, the upper inner ring 22, and the axially outer peripheral upper side 61 of the central mounting hole 37. During the movement of the valve core, the volume of this cavity changes, and the pressure of the internal fluid (usually air or water) also changes accordingly. When the valve core is open, the volume of the second cavity 38 decreases, and the internal gas or water is expelled, contributing to the rapid and smooth descent of the valve core. When the valve core is closed, fluid is injected into this cavity to provide an upward auxiliary thrust, ensuring reliable valve core reset. The third cavity 51 is located at the lower part of the valve control device 2, and its boundary is formed by the axially outer peripheral upper side 62 of the central mounting hole 37, the valve stem 45, the lower inner ring 33 on the lower side of the inner ring body, and the lower piston assembly. This cavity is the key drive chamber for controlling valve core opening. When pressurized water enters the third cavity 51, it applies a downward thrust to the lower piston assembly, thereby driving the valve stem 45 and the valve core assembly to move downwards, thus opening the valve core. Its precise volume and sealing are crucial for ensuring rapid valve core response and stable opening. The fourth cavity 31 is located at the bottom of the valve control device 2 and is formed by the lower piston assembly 24, the valve stem 45, the lower inner ring 33, and the spring-loaded adjusting cover 26 threaded to the lower inner ring 33. This cavity is typically used to contain air or as a mounting space for springs. When the valve core opens, the downward movement of the lower piston assembly 24 compresses the air or spring in the fourth cavity 31, generating a reverse damping force or reset force. When the valve core closes and resets, the spring force or expanded air in the fourth cavity 31 provides an upward thrust, assisting the valve core to move upward and reliably close. The threaded connection of the spring adjustment cover 26 allows for adjustment of the spring preload in this cavity, thereby finely controlling the reset characteristics of the valve core. Clearly defining the names and locations of these four control cavities helps to clearly understand the fluid control logic and mechanical balance mechanism inside the valve control device 2. Each cavity carries a specific function; through precise control of the pressure or volume within these cavities, fine adjustment of the valve core opening and closing process can be achieved, including driving, buffering, venting, and reset, thereby effectively preventing vibration of the valve core during movement and ensuring the stability and reliability of the system.

[0049] Through the refined structural design of the valve control device 2, especially the stable connection between the inner and outer rings 34 via reinforcing ribs 36, and the precise guidance of the valve stem 45 within the central mounting hole 37, a solid foundation is provided for the smooth movement of the valve core. The synergistic effect of the upper and lower piston assemblies with the valve stem 45, combined with the four clearly defined control chambers—the first cavity 60, the second cavity 38, the third cavity 51, and the fourth cavity 31—ensures that the valve core is subjected to multiple, balanced fluid pressures or mechanical forces during opening and closing. Specifically, when the valve core opens, the pressurized water in the third cavity 51 drives the lower piston assembly downwards, while the pressurized water in the first cavity 60 provides a downward auxiliary thrust. Meanwhile, the gas or water in the second and fourth cavities 38 and 31 provides buffering through controlled venting or compression, effectively suppressing the impact and vibration that may occur when the valve core moves at high speed. When the valve core returns to its closed position, the spring force or expanding gas in the fourth cavity 31 provides an upward reset force, while the fluid injected into the second cavity 38 provides an upward auxiliary thrust. This ensures that the valve core can smoothly and reliably return to the closed position, avoiding the risk of accidental spraying or incomplete closure due to vibration. This multi-cavity coordinated control mechanism significantly improves the operational stability, response speed, and service life of the deluge alarm valve under complex operating conditions, ensuring the reliability of the fire extinguishing system.

[0050] In some embodiments of this application, the valve control device 2 of the deluge alarm valve is provided with multiple control chambers, which are designed to prevent vibration during the opening and closing of the valve core through precise pressure management. However, if the pressure changes of the air or water inside these control chambers are not effectively and timely balanced and exchanged when the valve core is opening and closing, it may cause the valve core movement to be obstructed, unstable, or even affect its accurate positioning, thus failing to fully realize the expected effects of vibration resistance and prevention of accidental spraying and opening.

[0051] To address this, this application further proposes a scheme to optimize the internal fluid connectivity of the valve control device 2. Specifically, the fourth cavity 31 is connected to a second vent 40 that radially penetrates the valve stem 45 via a first vent 32 axially inside the valve stem 45. The fourth cavity 31 is a crucial control chamber in the valve control device 2, and its internal pressure changes directly affect the movement of the valve core. The first vent 32 axially positioned inside the valve stem 45 serves as a channel penetrating the valve stem 45, providing an axial path for the fluid (air or water) to exit or enter the fourth cavity 31. The second vent 40, radially penetrating the valve stem 45, is connected to the first vent 32 and extends radially outward from the valve stem 45, thereby directing the fluid passage of the fourth cavity 31 to the external space of the valve stem 45. The second vent 40 further connects to the second cavity 38. The second cavity 38 is another control chamber within the valve control device 2; through the connection of the second vent 40, fluid communication is achieved between the fourth cavity 31 and the second cavity 38. This connectivity ensures that the two chambers can coordinate pressure regulation during valve core movement. Furthermore, the second cavity 38 is connected to the upper inner ring 22, outer ring 34, and a reinforcing rib via an oblique hole 23. The oblique hole 23 is an inclined channel within the structure of the upper inner ring 22, outer ring 34, and reinforcing rib 36, connecting the second cavity 38 to the external environment or control system. This design allows for efficient fluid exchange between the internal control chamber and the outside environment through the ingenious arrangement of structural components. The oblique hole 23 is connected to the atmosphere and the control piping system 12 via a tee connector, forming a water-air co-current piping system. The tee connector, acting as a fluid distribution or collection element, connects the oblique hole 23 to both the atmosphere and the control piping system 12. Connecting to the atmosphere allows air in the control chamber to be exhausted or drawn in as needed to balance the chamber pressure. Connecting to the control piping system 12 allows the control chamber to introduce or discharge pressurized water according to system commands, achieving precise control of the valve core movement. This water-gas co-flow pipeline device can simultaneously manage and control the gas and liquid within the control chamber, ensuring the stable operation of the valve core under different operating conditions.

[0052] Through the above technical solution, during the operation of the deluge alarm valve system, when the valve core assembly needs to be opened, the valve stem 45 moves downward, compressing the fourth cavity 31. The air inside is discharged to the atmosphere through the first vent 32, the second vent 40, and the second cavity 38, via the inclined hole 23. Simultaneously, the second cavity 38 expands as the valve stem 45 moves downward, drawing air in from the atmosphere through the inclined hole 23. This active air discharge and intake mechanism effectively avoids resistance or vacuum effects caused by sudden pressure changes within the control chamber, ensuring that the valve core assembly can move downward smoothly and quickly, thereby achieving smooth opening of the outlet 43 and significantly reducing the vibration risk during valve opening. When the valve core assembly needs to be reset after fire extinguishing to prevent accidental spraying or opening, the valve stem 45 moves upward. At this time, the fourth cavity 31 expands, drawing air in from the atmosphere through the aforementioned pipeline. Simultaneously, the pressurized water from the control pipeline system 12 can enter the second cavity 38 through the tee joint and the inclined hole 23, applying an upward driving force to the valve core assembly. This dual water-air force not only assists the upward movement of the valve core assembly, ensuring it can powerfully and accurately close the outlet 43, but also effectively prevents accidental spraying or opening due to incomplete closure through precise pressure control. In summary, this water-air shared pipeline device, through its ingenious internal channel design and external connection, achieves coordinated management of pressurized water and air in the fourth cavity 31 and the second cavity 38 within the valve control device 2. This greatly improves the smoothness, response speed, and reliability of the valve core's opening and closing process, effectively solving the problems of vibration, jamming, or incomplete operation that may occur during valve core movement. Therefore, it ensures the stable operation of the deluge alarm valve system and its anti-accidental spraying and opening function at critical moments.

[0053] In some embodiments described above, the deluge alarm valve system utilizes the four control chambers of the valve control device 2 and a water-air interconnected pipeline to achieve smooth opening and vibration resistance of the valve core assembly. However, after fire extinguishing, ensuring the valve core assembly reliably and stably returns to the closed state to prevent accidental spraying or opening due to incomplete or insufficient reset force is a key issue that the system needs to address. Especially during long-term operation or under varying operating conditions, reliable closure of the valve core assembly is crucial for the system's safety and stability.

[0054] In this regard, this application further proposes that a pressure spring 30 is installed between the lower piston assembly 24 and the elastic adjustment cover 26. The pressure spring 30 has an axial thrust on the lower piston assembly 24, and the magnitude of the thrust is determined by the degree of engagement between the elastic adjustment cover 26 and the lower inner ring 33.

[0055] Specifically, the lower piston assembly 24 is a key movable component in the valve control device 2. It is connected to the valve stem 45 and forms a mating relationship with the third cavity 51 and the fourth cavity 31. During valve operation, the lower piston assembly 24 moves axially under the action of pressurized water and mechanical force, thereby driving the valve stem 45 and the valve core assembly to perform opening and closing actions. The elastic adjustment cover 26 is a component threadedly connected to the lower inner ring 33. Its main function is to provide an adjustable support point for the pressure spring 30. By changing the engagement depth between the elastic adjustment cover 26 and the lower inner ring 33, the pre-compression of the pressure spring 30 can be precisely adjusted, thereby changing the magnitude of the axial thrust it applies to the lower piston assembly 24. The pressure spring 30 is an energy storage element, typically a helical compression spring, installed between the lower piston assembly 24 and the elastic adjustment cover 26. Its function is to continuously apply an axial thrust to the lower piston assembly 24, which is intended to push the lower piston assembly 24 upward, thereby driving the valve stem 45 and valve core assembly to move in the closing direction, ensuring that the valve can reliably reset when there is no external pressurized water. The axial thrust refers to the force applied by the pressure spring 30 to the lower piston assembly 24 along the axis of the valve stem 45. This thrust is the main mechanical force source for valve reset and maintaining the closed state, working in conjunction with the hydraulic action generated by pressurized water in other cavities to achieve precise valve control. The magnitude of the thrust is determined by the degree of engagement between the elastic adjusting cover 26 and the lower inner ring 33. This mechanism allows for fine adjustment of the reset force of the pressure spring 30. When the elastic adjusting cover 26 is screwed deeper into the lower inner ring 33, the compression of the pressure spring 30 increases, and the thrust generated also increases; conversely, when screwed out, the thrust decreases. This adjustability allows the system to flexibly set the optimal reset force according to actual operating conditions, fluid pressure, valve wear, and other factors to ensure the reliability and stability of valve closure.

[0056] By installing a pressure spring 30 between the lower piston assembly 24 and the elastic adjustment cover 26, and applying an axial thrust to the lower piston assembly 24, this application effectively solves the reliability problem that may occur when the valve core assembly resets and closes after fire extinguishing. When the pressurized water in the control pipeline system 12 is discharged and the pressure in the third cavity 51 decreases, the pressure spring 30 can provide a continuous and stable upward mechanical force, actively driving the lower piston assembly 24, valve stem 45, and valve core assembly to move upward until the valve core assembly completely closes the outlet 43. This mechanical reset mechanism, combined with the degree of engagement between the elastic adjustment cover 26 and the lower inner ring 33, precisely adjusts the thrust, ensuring that the valve can reliably and quickly reset under different operating conditions, avoiding accidental spraying or opening due to incomplete reset or insufficient reset force. In addition, the adjustable spring thrust allows the system to adapt to the manufacturing tolerances, wear, and different system pressure requirements of the valve components, thereby improving the long-term operational stability and safety of the entire deluge alarm valve system.

[0057] In some embodiments of this application, although the valve control device 2 is provided with four control chambers along the valve stem to effectively prevent vibration during the opening and closing of the valve core, if the pressure signal transmission path between the control chamber and the external control pipeline system 12 is not properly designed, for example, if the pressure water introduction path of the third cavity 51 is not direct enough or the integration is not high, the pressure transmission efficiency may be reduced, which will affect the response speed and action accuracy of the valve core assembly. Especially when it is necessary to quickly and accurately open or close the valve to deal with emergency situations, such delay or instability will significantly reduce the reliability of the system.

[0058] In this regard, this application further proposes that the third cavity 51 is connected to a connecting hole 35 located in another reinforcing rib 36, the connecting hole 35 is connected to the first pipe 15, and the first pipe 15 is connected to the control pipeline system 12.

[0059] Specifically, the third cavity 51 is an important control chamber inside the valve control device 2. Its main function is to drive the lower piston assembly 24 downward when it receives pressurized water from the control pipeline system 12, thereby opening the valve core assembly. The side of the third cavity 51 is designed to directly connect to a connection hole 35. This connection hole 35 is cleverly integrated inside the reinforcing rib 36 of the valve control device 2. The reinforcing rib 36, as a structural component connecting the inner ring body and the outer ring body 34, has high strength and rigidity. Utilizing its internal space to form the connection hole 35 not only provides a protected fluid passage but also makes the structure of the entire valve control device 2 more compact and integrated. The connection hole 35 is further connected to the first pipe 15, which serves as an independent fluid transmission channel, establishing a reliable connection between the connection hole 35 and the external control pipeline system 12. The control pipeline system 12 is the core control unit of the entire deluge alarm valve system 1, responsible for supplying or discharging pressurized water to the valve control device 2 according to fire signals or other control commands to open or close the valve. With this connection method, the control pipeline system 12 can directly and efficiently introduce pressurized water into the third cavity 51, ensuring a rapid response to the control signal.

[0060] Through the above technical solution, the connection path between the third cavity 51 and the control piping system 12 has been optimized and integrated. By setting a connection hole 35 inside the reinforcing rib 36 and making its side directly connected to the third cavity 51, and then connecting to the control piping system 12 via the first pipe 15, a short, direct, and protected pressurized water transmission channel is constructed. This design significantly reduces the loss and delay of pressurized water during transmission, ensuring that the control signal can be transmitted to the third cavity 51 quickly and accurately. When the control piping system 12 issues an opening command, pressurized water can quickly fill the third cavity 51, thereby efficiently driving the lower piston assembly 24 to move downward, causing the valve core assembly to open rapidly. This not only improves the response speed of the deluge alarm valve, enabling it to be deployed for firefighting work more quickly in emergencies, but also further enhances the stability of the valve core assembly during the opening and closing process due to the stability and consistency of pressure transmission, effectively avoiding vibration caused by pressure fluctuations or delays, thereby improving the reliability and operating efficiency of the entire deluge alarm valve system.

[0061] In some embodiments described above, a deluge alarm valve system designed to prevent accidental spraying and opening, and to resist vibration, is proposed. The deluge alarm valve uses a valve control device to achieve coaxial alignment of the inlet, outlet, and valve core, and utilizes a water-air co-current pipeline to achieve dual-force opening and closing. However, in practical applications, how to construct a control pipeline system that can achieve both automated control and reliable manual intervention to ensure timely and accurate opening of the deluge alarm valve in various emergency situations, while avoiding system failure due to the failure of a single control method, is a technical problem that needs to be solved.

[0062] To address this, this application further proposes a deluge alarm valve system that prevents accidental spraying and opening, and is vibration-resistant. The control piping system 12 includes a first tee connector 14 and a second tee connector 10. One end of the straight pipe section of the first tee connector 14 is connected to a first pipe 15, and the other end is connected to a solenoid valve 11 via a pipe. The middle branch pipe of the first tee connector 14 is connected to one end of a manual control valve 13, and the other end of the manual control valve 13 is connected to the second tee connector 10. One end of the straight pipe section of the second tee connector 10 is connected to the solenoid valve 11, and the other end is connected to the first outlet 9 of the deluge alarm valve via a pipe.

[0063] Specifically, the control piping system 12 is used to supply or discharge pressurized water to the valve control device 2 to open or close the deluge alarm valve. This system is a key component for the normal operation of the entire deluge alarm valve system, and its design directly affects the valve's response speed and reliability. The first tee connector 14 and the second tee connector 10 are piping connections that collect or divert fluid in the piping, allowing multiple control elements to be integrated into the same control piping, thereby realizing complex control logic. One end of the straight pipe section of the first tee connector 14 is connected to the first pipe 15. This connection ensures that pressurized water can flow from the control piping system 12 to a specific chamber (e.g., the third cavity 51) inside the valve control device 2 to drive the valve core assembly. The other end of the first tee connector 14 is connected to the solenoid valve 11 through a pipe. The solenoid valve 11 is a device that controls the opening and closing of a valve through an electrical signal, typically used to achieve automated system control. When a fire alarm signal or other preset triggering conditions are received, the solenoid valve 11 can quickly open or close, thereby automatically activating the deluge alarm valve. The intermediate branch pipe of the first tee connector 14 connects to one end of the manual control valve 13. The manual control valve 13 is a manually operated valve that allows the operator to directly and manually open or close the control pipeline when needed. This provides an important manual intervention method for the system to cope with manual start-up needs in case of automation system failure or emergency. The other end of the manual control valve 13 connects to the second tee connector 10. This connection links the manual control path with the second tee connector 10, further integrating the control pipeline. One end of the straight pipe section of the second tee connector 10 connects to the solenoid valve 11, indicating that the solenoid valve 11 can be connected to the control pipeline system 12 through two different paths or in a redundant manner, enhancing the reliability of the automation control. The other end of the second tee connector 10 connects to the first outlet 9 of the deluge alarm valve through a pipe. This connection allows the control pipeline system 12 to obtain pressurized water from the first outlet 9 of the deluge alarm valve, or to drain water in the control pipeline to this outlet, thereby achieving precise pressure control of the valve control device 2.

[0064] Through the above technical solution, the solenoid valve 11 and the manual control valve 13 are cleverly integrated into the control piping system 12 and connected through the first tee connector 14 and the second tee connector 10, achieving flexible and redundant control of the deluge alarm valve opening. The introduction of the solenoid valve 11 enables the system to automatically open in response to external signals (such as fire detection signals), greatly improving the response speed and automation level. Simultaneously, the presence of the manual control valve 13 provides operators with a direct manual intervention method, ensuring that the deluge alarm valve can be manually opened even in the event of an automation system failure or power outage, thus avoiding delays or failures in fire suppression due to the failure of a single control method. This dual control mechanism significantly improves the reliability and safety of the deluge alarm valve system, ensuring effective activation of the fire suppression function in various emergency situations. Furthermore, pressurized water is supplied to the first pipe 15 through the first outlet 9, providing a stable power source for the precise operation of the valve control device 2, further ensuring the accurate opening and closing of the valve core.

[0065] In some embodiments described above, a deluge alarm valve system designed to prevent accidental spraying and opening, and to resist vibration, is proposed. Its core lies in controlling the opening and closing of the valve core through a valve control device, and employing a dual-force water-air design and multiple control chambers to improve stability. However, in practical applications, if the inlet and outlet layout of the deluge alarm valve is unreasonable, it may lead to complex internal flow channels and increased hydraulic losses, thereby affecting the system's response speed and fire extinguishing efficiency. Furthermore, unclear port divisions may increase the difficulty of installation and maintenance, and even cause misoperation or functional malfunction.

[0066] In response, this application further proposes an optimized design for the fluid connection structure of the deluge alarm valve. Specifically, the lower valve body 8 has a base 29 at its bottom, with an inlet 28 in the middle of the base 29 and a first outlet 9 and a second outlet 7 on each side; the upper valve body 3 has a valve seat 42 at its top, with an outlet 43 in the middle of the valve seat 42, and a third outlet 41 and a fourth outlet 46 on each side of the outlet 43; the valve seat 42 is connected to a valve cover 16 that seals the outlet 43 in the middle, and the third outlet 41 is connected to the spray pipe 1.

[0067] The base 29 located at the bottom of the lower valve body 8 serves as the base of the deluge alarm valve, providing stable support and an installation interface for the entire valve body. This base 29 can be integrally formed with the lower valve body 8, or it can be securely connected via bolts, welding, or other methods to ensure stable installation of the valve body within the system.

[0068] The inlet 28 is located in the middle of the base 29, with its central axis aligned with the axes of the valve core and the outlet 43, forming a coaxial arrangement. This centrally symmetrical layout helps guide water flow smoothly into the valve body, minimizing water flow impact and pressure loss, and providing a stable water pressure source for subsequent valve core opening and closing control. The inlet 28 is typically connected to the main water supply line and serves as the water inlet for the entire fire extinguishing system.

[0069] On either side of the inlet 28, the base 29 is respectively equipped with a first outlet 9 and a second outlet 7. This separate outlet design allows the water flow entering the valve body to be effectively diverted to different functional pipelines. For example, the first outlet 9 can be used to connect to the control pipeline system 12, while the second outlet 7 can be used to connect to the alarm pipeline system. This clear functional zoning avoids hydraulic interference between different systems, ensuring accurate transmission of control signals and timely response of the alarm function.

[0070] The upper valve body 3 is provided with a valve seat 42 on its top. The valve seat 42 is a key component that works with the valve core assembly to achieve the flow interruption of water. The valve seat 42 is usually made of wear-resistant and corrosion-resistant materials and is precision machined to ensure a reliable seal with the valve core assembly and prevent leakage when the valve is closed.

[0071] A main outlet 43 is located in the middle of the valve seat 42. This outlet 43 is the main channel for fire extinguishing water to flow to the sprinkler pipe 1 after the deluge alarm valve is opened. Its center position is aligned with the axial direction of the inlet 28 and the valve core, which further optimizes the water flow path, reduces flow resistance, and ensures the rapid and efficient delivery of fire extinguishing water.

[0072] On both sides of the main outlet 43, a third outlet 41 and a fourth outlet 46 are respectively provided on the valve seat 42. This design provides additional fluid connection points, enhancing the system's flexibility. The third outlet 41 is explicitly connected to the sprinkler pipe 1, serving as the outlet for the main fire extinguishing water flow, ensuring that fire extinguishing water can be directly and quickly delivered to the sprinkler heads. The fourth outlet 46 can be used to connect other auxiliary pipelines, such as test pipelines or additional alarm pipelines, depending on system requirements.

[0073] To achieve effective sealing of the outlet 43, a valve cover 16 is connected in the middle of the valve seat 42. This valve cover 16 is part of the valve core assembly. When the valve is closed, the valve cover 16 fits tightly with the valve seat 42, completely blocking water flow through the outlet 43 and preventing accidental spraying or leakage. When the valve is opened, the valve cover 16 is lifted away from the valve seat 42, allowing water to flow through.

[0074] Through the above technical solution, this application optimizes the fluid connection structure of the deluge alarm valve. The rational layout of the inlet 28, outlet 43, and auxiliary outlets (first outlet 9, second outlet 7, third outlet 41, and fourth outlet 46) makes the internal flow channel of the valve body clearer and smoother, effectively reducing hydraulic loss and improving water transmission efficiency. This structured port design not only simplifies the connection of external pipelines and reduces the complexity of installation and maintenance, but also ensures that the control pipeline system 12, alarm pipeline system, and sprinkler pipe 1 operate independently and efficiently through functional zoning, avoiding mutual interference. In particular, the third outlet 41 is directly connected to the sprinkler pipe 1, ensuring rapid and direct delivery of fire extinguishing water, significantly improving the response speed and fire extinguishing efficiency of the deluge alarm valve system in the event of a fire, thereby effectively avoiding system response delays or functional failures caused by obstructed flow channels or chaotic connections. Meanwhile, the tight fit between the valve cover 16 and the valve seat 42 ensures reliable sealing of the valve in standby mode, preventing accidental spraying or opening.

[0075] When using deluge alarm valve systems for fire suppression, ensuring the timeliness and accuracy of fire alarms, as well as effectively monitoring system status and preventing false alarms, are key issues that need to be addressed in system design. Traditional alarm systems may have limitations such as delayed response, susceptibility to interference, or inability to provide real-time feedback on valve operation status, thereby affecting fire suppression efficiency and the safety of personnel evacuation.

[0076] In response, this application further proposes a rain alarm valve system that is resistant to accidental spraying and opening and vibration. The alarm pipeline system includes a normally closed valve 6 connected to the second water outlet 7. The normally closed valve 6 is connected to one end of a pressure sensing alarm bell 17 through a pipeline. The other end of the pressure sensing alarm bell 17 is connected to one end of a normally open valve 5 through a pipeline. The other end of the normally open valve 5 is connected to the fourth water outlet 46 through the second pipeline 4.

[0077] Specifically, the alarm piping system is a crucial component of the deluge alarm valve system. Its primary function is to promptly and accurately issue a fire alarm signal when the deluge alarm valve is opened and water spraying begins. It typically consists of a series of pipes, valves, and alarm devices, designed to trigger the alarm by sensing changes in water flow or pressure. The second outlet 7 is a dedicated outlet on the lower valve body 8 of the deluge alarm valve. When the valve core assembly of the deluge alarm valve opens, and pressurized water flows from the inlet 28 to the spray pipe 1, some water flows out from the second outlet 7, serving as a signal source to trigger the alarm piping system. The normally closed valve 6 remains closed in the normal standby state of the system, effectively isolating the alarm piping system from the second outlet 7. Its function is to prevent the alarm piping system from being falsely activated due to minor pressure fluctuations or misoperation within the system during non-fire conditions. When the deluge alarm valve opens and there is sufficient water pressure at the second outlet 7, the normally closed valve 6 is forced open by the water pressure, allowing water to enter the alarm piping system. The pressure-sensitive alarm bell 17 is a core alarm device that triggers an audible and visual alarm by sensing changes in its internal water pressure. When water flows through the normally closed valve 6 and fills the pressure-sensitive alarm bell 17, its internal pressure sensor detects the increase in water pressure and immediately activates the alarm function, issuing an alarm signal to alert on-site personnel of a fire. The normally open valve 5 remains open in the normal standby state of the system. It is connected to the other end of the pressure-sensitive alarm bell 17 and further connected to the fourth outlet 46 via the second pipe 4. The presence of the normally open valve 5 ensures pressure balance in the alarm piping system in the non-alarm state, or provides a pressure relief or backflow channel after the alarm ends, allowing the system to reset quickly. As part of the alarm piping system, the second pipe 4 connects the normally open valve 5 to the fourth outlet 46. It provides a flow path for water in the alarm piping system, whether for pressure relief after an alarm, system testing, or maintaining water pressure balance within the pipeline. The fourth outlet 46 is located on the valve seat 42 at the top of the valve body 3 of the deluge alarm valve. As the end connection point of the alarm piping system, it may be used to connect the alarm piping system to a specific chamber inside the deluge alarm valve (e.g., for pressure balancing or backflow) or to an external drain line to complete the water circulation or discharge of the alarm piping.

[0078] Through the above technical solution, when the deluge alarm valve system is activated due to a fire, the pressurized water at the inlet 28 quickly opens the normally closed valve 6 through the second outlet 7, driving the pressure-sensitive alarm bell 17 to issue a timely and accurate fire alarm signal. The design of the normally closed valve 6 effectively avoids false alarms in non-fire conditions, improving the reliability of the alarm system. Simultaneously, the connection between the normally open valve 5 and the fourth outlet 46 ensures pressure balance and rapid reset capability of the alarm piping system, enabling the entire alarm system to operate stably and reliably, buying valuable time for fire fighting and personnel evacuation. This alarm mechanism, directly linked to the deluge alarm valve's action, ensures a high degree of synchronization between alarm and firefighting actions, significantly improving the safety and response efficiency of the entire anti-false spraying / opening and vibration-resistant deluge alarm valve system.

[0079] In some of the embodiments described above in this application, the valve core assembly of the deluge alarm valve is a key component for achieving the sealing and opening of the inlet and outlet. However, in practical applications, the sealing performance and structural stability of the valve core assembly are crucial for ensuring the reliable opening and closing of the valve. If the sealing structure of the valve core assembly is not strong enough or is easily deformed, it may lead to poor sealing, accelerated wear, and thus affect the valve's anti-accidental spraying and opening function, and even reduce the overall reliability of the system during long-term use.

[0080] In response, this application further proposes an optimized design for the valve core assembly. The valve core assembly includes a lower sealing seat 20 and an upper sealing seat 44 that are threadedly connected to the valve stem 45. The lower sealing seat 20 and upper sealing seat 44 serve as support structures and are tightly connected to the valve stem 45 via threads, ensuring the axial positioning and stability of the valve core assembly on the valve stem 45. This connection method facilitates the installation and disassembly of the valve core assembly, as well as the adjustment of the preload when necessary, to adapt to different sealing requirements.

[0081] A sealing ring 47 is clamped and connected between the lower sealing seat 20 and the upper sealing seat 44. The sealing ring 47 is the core component for achieving fluid sealing. It is firmly fixed by the upper and lower sealing seats to prevent displacement or deformation during valve opening and closing or when subjected to fluid pressure, thereby ensuring the continuity and effectiveness of the seal.

[0082] The sealing ring 47 is lined with a steel ring 48. The steel ring 48 acts as a reinforcing skeleton, significantly improving the overall rigidity and pressure resistance of the sealing ring 47. When the valve is subjected to high-pressure water flow or is under prolonged high pressure, the steel ring 48 effectively resists radial pressure, preventing excessive deformation or crushing damage to the sealing ring 47, thereby enhancing the structural integrity and durability of the seal.

[0083] The steel ring 48 is surrounded by rubber 49, forming a combination of rigid and flexible materials. This composite structure cleverly combines the advantages of different materials: the steel ring 48 provides the necessary mechanical strength and support, ensuring the structural stability of the sealing ring; while the outer rubber 49 provides excellent elasticity and flexibility, allowing it to fit tightly against the valve seat when the valve is closed, achieving a reliable fluid seal. This combination of rigid and flexible materials ensures that the valve core assembly possesses both sufficient strength to resist external loads and good flexibility to adapt to minor unevenness on the valve seat surface, thus ensuring a highly efficient and durable sealing effect.

[0084] Through the above technical solution, the valve core assembly adopts a design where the lower sealing seat 20 and the upper sealing seat 44 are threadedly connected to the valve stem 45 and clamp the sealing ring 47, ensuring the stable installation and precise positioning of the sealing assembly. More importantly, the sealing ring 47 is lined with a steel ring 48 and covered with rubber 49, forming a soft-hard combination structure. This structure allows the rubber 49 to provide excellent flexible sealing when the valve core assembly is closed, tightly fitting the valve seat and effectively preventing fluid leakage; at the same time, the inner steel ring 48 gives the sealing ring 47 sufficient mechanical strength and resistance to deformation, making it less prone to compression deformation or damage under the impact of high-pressure water flow. This not only significantly improves the sealing reliability and durability of the valve core assembly, effectively avoiding accidental spraying and opening due to poor sealing, but also maintains stable sealing performance under frequent valve opening and closing conditions, thereby greatly improving the anti-accidental spraying and opening capability and long-term operational stability of the entire deluge alarm valve system.

[0085] In some embodiments described above, a deluge alarm valve system designed to prevent accidental spraying and opening, and to resist vibration, is proposed. This system comprises a deluge alarm valve, an alarm piping system, and a control piping system 12, and uses a valve control device 2 to control the opening and closing of the valve core. However, in practical applications, ensuring the valve core assembly can open smoothly and quickly in emergencies while avoiding damage or instability caused by impact or vibration, and reliably and thoroughly resetting the valve core assembly after fire extinguishing to prevent accidental spraying or failure to close, are key technical problems that need to be addressed during the operation of this system.

[0086] In response, this application further proposes an operation method for a vibration-resistant deluge alarm valve system that prevents accidental spraying and opening. The specific operation method is as follows:

[0087] In the event of a fire, either the manual valve 13 or the solenoid valve 11 of the control piping system 12 is opened, allowing pressurized water to flow through the first outlet 9, the first pipe 15, and the connecting hole 35 into the third cavity 51. This pressurized water drives the lower piston assembly 24 to move downwards, simultaneously compressing the air in the fourth cavity 31 and the pressure spring 30. The downward movement of the lower piston assembly 24 causes the valve stem 45 to move downwards, thereby opening the seal between the outlets 43 of the valve core assembly. At this time, the pressurized water from the inlet 28 flows through the upper valve body 3 and the lower valve body 8, exits from the third outlet 41, and enters the sprinkler pipe 1 for fire extinguishing. During the downward movement of the valve stem 45, the pressurized water simultaneously applies downward water pressure to the valve core assembly and the first piston 39, causing the first cavity 60 to expand while the second cavity 38 shrinks. The air in the second cavity 38 and the fourth cavity 31 is simultaneously discharged through the oblique hole 23 in the water-air common piping device.

[0088] After the fire is extinguished, the valve core assembly needs to be reset to prevent accidental spraying or opening. First, close the manual control valve 13 and the solenoid valve 11. The pressurized water in the third cavity 51 is discharged through the pipe, thereby reducing its internal pressure. Subsequently, the fourth cavity 31 expands under the action of the pressure spring 30, driving the lower piston assembly 24 to move upward. The upward movement of the lower piston assembly 24 drives the valve stem 45 to move upward, that is, the valve core assembly moves upward until the outlet 43 is closed. During this process, the pressurized water in the first cavity 60 assists in driving the valve core assembly upward. At the same time, the oblique hole 23 in the water-air common pipeline device injects water into the second cavity 38 and the fourth cavity 31 through the pressurized water connected by the control pipeline system 12, forming the upward driving force for the valve core assembly.

[0089] In the above operating method, when a fire occurs, the opening of the manual control valve 13 or the solenoid valve 11 of the control piping system 12 is the initial step in the system's response to the fire signal. The manual control valve 13 is usually used for manual emergency operation or system testing, while the solenoid valve 11 is often linked with the fire detection system to achieve an automated response. Opening either valve can effectively initiate the fire extinguishing process. Pressurized water enters the third cavity 51 through the first outlet 9, the first pipe 15, and the connecting hole 35. This path ensures that the control pressure water can accurately act on the lower piston assembly 24, which is the key to driving the valve core assembly to open. After receiving the pressurized water, the third cavity 51 generates a downward thrust on the lower piston assembly 24, causing it to move downward against resistance. The downward movement of the lower piston assembly 24 not only compresses the air in the fourth cavity 31 but also compresses the pressure spring 30. The compression of the air and the spring provides buffering and damping effects, which helps control the movement speed and stability of the lower piston assembly 24. The lower piston assembly 24 directly drives the valve core assembly downward via the valve stem 45, thereby releasing the seal between the valve core assembly and the outlet 43, allowing the main fire extinguishing water flow to pass through. After the valve core assembly opens, the pressurized water from the inlet 28 flows through the internal channels of the upper valve body 3 and the lower valve body 8, exits from the third outlet 41, and enters the sprinkler pipe 1, ultimately being delivered to the nozzles for fire extinguishing. Simultaneously with the downward movement of the valve stem 45, the pressure of the main water flow also acts on the valve core assembly and the first piston 39, further providing downward driving force and assisting in the rapid opening of the valve core assembly. The expansion of the first cavity 60 and the reduction of the second cavity 38 are inevitable results of the piston movement. Meanwhile, the air in the second cavity 38 and the fourth cavity 31 is discharged through the inclined hole 23 in the water-air common pipeline device, effectively preventing air pressure from hindering piston movement and ensuring the smooth and rapid opening of the valve core assembly.

[0090] After the fire is extinguished, closing the manual control valve 13 and the solenoid valve 11 is a crucial step in stopping the controlled water flow, thereby releasing the pressure supply to the third cavity 51. The pressurized water in the third cavity 51 is discharged through the pipe, reducing its internal pressure and creating conditions for the valve core assembly to reset. As the pressure in the third cavity 51 is released, the compressed pressure spring 30 in the fourth cavity 31 begins to expand, generating an upward thrust that drives the lower piston assembly 24 to move upward. The upward movement of the lower piston assembly 24 drives the valve core assembly upward through the valve stem 45 until it re-seales with the outlet 43, completing the valve closure. During this process, the pressurized water in the first cavity 60 may also generate an upward auxiliary thrust on the valve core assembly, further promoting valve closure. More importantly, the oblique hole 23 in the water-air common pipeline device injects water into the second cavity 38 and the fourth cavity 31 through the pressurized water connected by the control pipeline system 12, forming an additional upward driving force. This synergistic effect of water pressure and spring force ensures that the valve core assembly can reliably and completely reset and close.

[0091] Through the above technical solution, in the event of a fire, the system can quickly introduce pressurized water to drive the lower piston assembly 24 downward by opening the manual control valve 13 or the solenoid valve 11. During the opening of the valve core assembly, the pressurized water applies downward water pressure to the valve core assembly and the first piston 39. At the same time, the air in the second cavity 38 and the fourth cavity 31 is discharged in time through the inclined hole 23 in the water-air common pipeline device, effectively avoiding air resistance and vibration, ensuring that the valve core assembly opens smoothly and quickly, thereby achieving an efficient fire extinguishing response. After the fire is extinguished, by closing the control valve and discharging the pressurized water in the third cavity 51, the expansion force of the pressure spring 30 and the pressurized water introduced through the inclined hole 23 in the water-air common pipeline device work together to inject water into the second cavity 38 and the fourth cavity 31, forming a strong upward driving force, ensuring that the lower piston assembly 24 and the valve core assembly reliably return to their upward position and completely close the outlet 43. This dual-force opening and closing mechanism of water and air not only significantly improves the smoothness and speed of valve core assembly opening and closing, but also effectively prevents problems such as accidental spraying and opening due to vibration, as well as failure to close due to incomplete reset, greatly improving the safety and reliability of the rain alarm valve system.

[0092] The following example will provide a more detailed explanation of the above technical solution:

[0093] Consider a large chemical production site (Site A) whose fire suppression system is equipped with a deluge-resistant alarm valve system designed to prevent accidental activation and vibration. This system is intended to activate quickly and reliably in the event of a fire, while avoiding misoperation and equipment vibration.

[0094] When the fire detection system at location A detects a fire signal, the control piping system 12 receives an instruction. At this time, the operator in the fire control room can manually operate the hand valve 13, or the automatic fire control system can trigger the solenoid valve 11 to open. Regardless of whether the hand valve 13 or the solenoid valve 11 is opened, the pressurized water in the control piping system 12 will flow through the first outlet 9 at the bottom of the lower valve body 8 of the deluge alarm valve, through the first pipe 15 and the connecting hole 35 located in the reinforcing rib 36, and finally enter the third cavity 51 of the valve control device 2.

[0095] The pressurized water in the third cavity 51 exerts a downward thrust on the lower piston assembly 24, driving it to move downward. This downward movement of the lower piston assembly 24 compresses the air in the fourth cavity 31 and the pressure spring 30 installed between the lower piston assembly 24 and the spring-loaded adjusting cover 26. Simultaneously, the lower piston assembly 24 drives the valve stem 45 to move downward. This downward movement of the valve stem 45 releases the seal between the valve core assembly (including the lower sealing seat 20 and upper sealing seat 44 threadedly connected to the valve stem 45, and the sealing ring 47 they clamp and connect, the sealing ring 47 being lined with a steel ring 48 and covered with rubber 49) and the outlet 43 opened in the middle of the valve seat 42 at the top of the upper valve body 3, thereby opening the outlet 43.

[0096] Once the valve core assembly is opened, the pressurized water from the inlet 28 in the middle of the base 29 can flow through the lower valve body 8 and the upper valve body 3, out from the third outlet 41 on both sides of the valve seat 42, and enter the sprinkler pipe 1 connected to the third outlet 41, thereby activating the sprinkler fire extinguishing.

[0097] As the valve stem 45 moves downward, the pressurized water at the inlet 28 simultaneously applies downward water pressure to the valve core assembly and the first piston 39 in the upper piston assembly, which helps the valve core assembly to open quickly. At this time, the first cavity 60 formed by the valve core assembly, the first piston 39, the valve stem 45, and the upper inner ring 22 on the upper side of the inner ring expands, while the second cavity 38 formed by the first piston 39, the valve stem 45, the upper inner ring 22, and the upper outer peripheral side 61 of the center mounting hole 37 decreases. The air in the second cavity 38 and the fourth cavity 31 is discharged through a water-air common pipeline device. Specifically, the air passes through the first axial air hole 32 inside the valve stem 45, connects to the second air hole 40 that radially penetrates the valve stem 45, and the second air hole 40 connects to the second cavity 38. At the same time, the second cavity 38 connects to the oblique hole 23 that penetrates the upper inner ring 22, the outer ring 34, and a reinforcing rib 36. The oblique hole 23 is connected to the atmosphere and the control pipeline system 12 through a tee connector, thereby realizing the smooth discharge of air. This mechanism, in which pressurized water enters and vents the valve control device 2 during opening, forming a dual-force opening and closing mechanism of water and air, combined with the synergistic effect of four control chambers (first chamber 60, second chamber 38, third chamber 51, and fourth chamber 31) located along the valve stem 45, enables the valve core assembly to move smoothly and quickly during the opening process. This effectively avoids the problem of vibration easily generated during the opening and closing process of the valve core in the prior art, and improves the stability of the system.

[0098] Simultaneously, the alarm piping system also begins to operate. When the valve core assembly opens, the second outlets 7 on both sides of the bottom of the lower valve body 8 connect, allowing pressurized water to enter through the normally closed valve 6 connected to the second outlet 7, driving the pressure-sensing alarm bell 17 to sound an alarm. The other end of the pressure-sensing alarm bell 17 is connected to one end of the normally open valve 5 via a pipeline, and the other end of the normally open valve 5 is connected to the fourth outlets 46 on both sides of the valve seat 42 via the second pipe 4, further ensuring the transmission of the alarm signal.

[0099] After the firefighting operation is completed, the valve core assembly needs to be reset to prevent accidental spraying or opening. First, close the manual valve 13 and solenoid valve 11 in the control piping system 12. At this time, the pressurized water in the third cavity 51 is discharged through the pipe, causing the pressure in the third cavity 51 to decrease.

[0100] Subsequently, the fourth cavity 31 begins to expand under the action of the pressure spring 30. The pressure spring 30 exerts an axial thrust on the lower piston assembly 24, driving the lower piston assembly 24 to move upward. The magnitude of the thrust of the pressure spring 30 can be adjusted by the degree of engagement between the elastic adjustment cover 26 and the lower inner ring 33 to accommodate different reset requirements. The upward movement of the lower piston assembly 24 drives the valve stem 45 to move upward, thereby causing the valve core assembly to move upward until it closes the outlet 43 again, restoring the sealed state.

[0101] During this closing process, the pressurized water in the first cavity 60 assists in driving the valve core assembly upward, further enhancing the closing force. Simultaneously, the inclined hole 23 in the water-air co-current pipeline device injects water into the second cavity 38 and the fourth cavity 31 through the pressurized water connected to the control pipeline system 12. This pressurized water drainage and air intake in the valve control device 2 during closing creates an upward driving force for the valve core assembly, ensuring that the valve core assembly can reliably close the outlet 43 and effectively preventing accidental spraying or opening due to the valve core assembly's inability to close.

[0102] This system achieves dual-force opening and closing via a water-air co-current pipeline within the valve control device 2. Four control chambers are located along the valve stem 45, effectively solving the problem of vibration during valve core opening and closing in existing technologies. Furthermore, the precise control of the manual valve 13 and solenoid valve 11 by the control pipeline system 12, along with the coordinated action of the pressure spring 30 and the water-air co-current pipeline, ensures reliable opening and closing of the valve core assembly, significantly improving the ability to prevent accidental spraying and opening, and meeting the high-quality, high-efficiency, and vibration-resistant requirements of high-risk industrial environments. The entire system is structurally designed and operates in a coordinated manner, forming a closely integrated whole to achieve the goals of preventing accidental spraying, opening, and vibration resistance.

[0103] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A deluge alarm valve system for preventing accidental spraying and opening, and resisting vibration, comprising a deluge alarm valve connected to a spray pipe (1), the deluge alarm valve being connected to both an alarm piping system and a control piping system (12), wherein the deluge alarm valve comprises an upper valve body (3) and a lower valve body (8) with their shell structures connected vertically, and a valve control device (2) is provided between the upper valve body (3) and the lower valve body (8), characterized in that: The inlet (28), outlet (43) and valve core of the rain alarm valve are arranged in the same axial direction. The valve control device controls the opening and closing of the outlet by controlling the valve core position through the pressure water from the same source as the inlet. The valve control device is equipped with a water and air common pipeline device. When the valve control device is opened, the pressure water of the valve control device enters and vents. When the valve control device is closed, the pressure water of the valve control device drains and enters, forming a water and air dual force opening and closing. The valve control device is provided with four control chambers along the valve stem to prevent vibration during the opening and closing process of the valve core.

2. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in claim 1, is characterized in that: The valve control device (2) includes an inner ring body and an outer ring body (34) connected by two or more reinforcing ribs (36). The inner ring body is provided with an axially arranged central mounting hole (37). A valve stem (45) is installed in the central mounting hole (37). One end of the valve stem (45) is axially connected to an upper piston assembly, and the other end is connected to a lower piston assembly. The upper piston assembly includes a valve core assembly arranged vertically and a first piston (39). The lower piston assembly includes a valve core assembly arranged vertically and a first piston (39). The valve core assembly, the first piston (39), and the valve stem (45) cooperate with the upper inner ring body (22) on the upper side of the inner ring body to form a first cavity (60). The first piston (39) The valve stem (45) and the upper inner ring (22) cooperate with the upper outer circumferential side (61) of the center mounting hole (37) to form a second cavity (38); the lower outer circumferential side (62) of the center mounting hole (37), the lower inner ring (33) of the valve stem (45) and the lower inner ring (33) cooperate with the lower piston assembly to form a third cavity (51); the lower piston assembly (24), the valve stem (45), and the lower inner ring (33) cooperate with the elastic adjustment cover (26) of the threaded connection of the lower inner ring (33) to form a fourth cavity (31). The four control cavities are the first cavity (60), the second cavity (38), the third cavity (51), and the fourth cavity (31).

3. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in claim 2, is characterized in that: The fourth cavity (31) is connected to the second vent (40) that penetrates the valve stem (45) radially through the first vent (32) inside the valve stem (45). The second vent (40) is connected to the second cavity (38). The second cavity (38) is connected to the inner ring body (22), the outer ring body (34) and a slanted hole (23) that penetrates the inner ring body (22), the outer ring body (34) and a reinforcing rib. The slanted hole (23) is connected to the atmosphere and the control pipeline system (12) through a three-way connector to form a water and air common pipeline device.

4. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in claim 2, is characterized in that: A pressure spring (30) is installed between the lower piston assembly (24) and the elastic adjustment cover (26). The pressure spring (30) has an axial thrust on the lower piston assembly (24). The magnitude of the thrust is determined by the degree of engagement between the elastic adjustment cover (26) and the lower inner ring (33).

5. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in claim 2, is characterized in that: The third cavity (51) is connected to a connecting hole (35) located in another reinforcing rib (36) on its side. The connecting hole (35) is connected to the first pipe (15), and the first pipe (15) is connected to the control pipeline system (12).

6. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, according to claim 1, is characterized in that: The control pipeline system (12) includes a first tee connector (14) and a second tee connector (10). One end of the straight pipe section of the first tee connector (14) is connected to the first pipeline (15), and the other end is connected to the solenoid valve (11) through a pipeline. The middle branch pipe of the first tee connector (14) is connected to one end of the manual control valve (13), and the other end of the manual control valve (13) is connected to the second tee connector (10). One end of the straight pipe section of the second tee connector (10) is connected to the solenoid valve (11), and the other end is connected to the first outlet (9) of the deluge alarm valve through a pipeline.

7. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in claim 1, is characterized in that: The lower valve body (8) is provided with a base (29) at the bottom, with an inlet (28) in the middle of the base (29) and a first outlet (9) and a second outlet (7) on both sides respectively. The upper valve body (3) is provided with a valve seat (42) at the top, with an outlet (43) in the middle of the valve seat (42), and a third outlet (41) and a fourth outlet (46) on both sides of the outlet (43) respectively. The valve cover (16) of the sealed outlet (43) is connected in the middle of the valve seat (42), and the third outlet (41) is connected to the spray pipe (1).

8. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in claim 1, is characterized in that: The alarm pipeline system includes a normally closed valve (6) connected to the second outlet (7), the normally closed valve (6) is connected to one end of a pressure sensing alarm bell (17) through a pipeline, the other end of the pressure sensing alarm bell (17) is connected to one end of a normally open valve (5) through a pipeline, and the other end of the normally open valve (5) is connected to the fourth outlet (46) through the second pipeline (4).

9. The rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in claim 1, is characterized in that: The valve core assembly includes a lower sealing seat (20) and an upper sealing seat (44) that are threadedly connected to the valve stem. The lower sealing seat (20) and the upper sealing seat (44) clamp and connect a sealing ring (47). The sealing ring (47) is lined with a steel ring (48), and the outer periphery of the steel ring (48) is covered with rubber (49) to form a soft and hard combination structure.

10. The operation method of a rain alarm valve system for preventing accidental spraying and opening, and resisting vibration, as described in any one of claims 1 to 9, characterized in that: The operation method is as follows: In the event of a fire, either the manual valve (13) or the solenoid valve (11) of the control piping system (12) is opened, and pressurized water flows through the first outlet (9), through the first pipe (15), and the connecting hole (35) into the third cavity (51). This drives the lower piston assembly (24) to move downward, compressing the air and pressure spring (30) in the fourth cavity (31). The lower piston assembly (24) then drives the valve stem to move downward, causing the valve core assembly to open the seal between the outlet (43) and the inlet (28). The pressurized water flows out from the third outlet (41) through the upper valve body (3) and the lower valve body (8) and enters the sprinkler pipe (1) for fire extinguishing. At the same time as the valve stem moves downward, the pressurized water applies downward water pressure to the valve core assembly and the first piston (39), expanding the first cavity (60) while reducing the second cavity (38). The air in the second cavity (38) and the fourth cavity (31) is simultaneously vented through the inclined hole (23) in the water-air common pipeline device, so that the valve core assembly opens smoothly and quickly to avoid vibration. After the fire is extinguished, the valve core assembly needs to be reset to prevent accidental spraying and opening. First, close the manual control valve (13) and the solenoid valve (11). The pressurized water in the third cavity (51) is discharged through the pipeline to reduce the pressure. Then, the fourth cavity (31) expands under the action of the pressure spring (30) to drive the piston assembly (24) to move upward, which drives the valve stem to move upward, that is, the valve core assembly to move upward until the outlet (43) is closed. During this process, the pressurized water in the first cavity (60) assists in driving the valve core assembly to move upward. At the same time, the inclined hole (23) in the water and air common pipeline device injects water into the second cavity (38) and the fourth cavity (31) through the pressurized water connected by the control pipeline system (12) to form the upward driving force of the valve core assembly to prevent accidental spraying and opening caused by the inability to close the valve core assembly.

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