Intelligent fire extinguishing alarm valve

Abstract

The present application relates to the technical field of fire-fighting facilities, and particularly relates to an intelligent fire extinguishing alarm valve, a main pipeline is of a bending structure and is protruded backward to form a bending section, a valve clack cavity is formed at the head of the bending section; an inclined valve clack shaft is movably arranged in the valve clack cavity, and the inclination angle is 40 degrees; a locking penetrating rod is arranged in front of the inclined valve clack; a locking cavity is formed in the main pipeline, and a locking tongue is movably arranged in the cavity and can be cooperated with the locking penetrating rod to limit the inclined valve clack; when the locking tongue is retracted, the inclined valve clack can be opened under the hydraulic action of the water supply side. Advantageous effects: the bending section of the main pipeline avoids direct water flow impact on the inclined valve clack, the inclined valve clack is inclined to shorten the opening and closing stroke compared with the traditional parallel valve clack, the locking tongue can be quickly opened after being unlocked, and the delay of the traditional valve clack with large angle turning is avoided; the device directly measures the water pressure of the water supply side through a water pressure detection control module, does not need a traditional water flow delay device, eliminates the delay of 7-8 seconds between the alarm and the water supply, and can be unlocked, water supplied and alarmed in linkage at the first time when a fire occurs.

Description

Technical Field

[0001] This invention is an intelligent fire extinguishing alarm valve, belonging to the field of fire protection facilities technology. Background Technology

[0002] In the field of fire protection technology, intelligent fire alarm valves, as control components connecting the water supply side and the system side, are widely used in automatic fire extinguishing systems in various places such as commercial buildings, industrial plants, and high-rise buildings. Their main function is to realize the control of the water supply path and alarm linkage in the event of a fire.

[0003] In current mainstream fire alarm valves, under normal operating conditions, both the supply side and the system side are filled with pressurized water. The valve opening control depends on the force difference between the supply side and the system side, and the valve's own weight is superimposed on the force end of the system side. Ultimately, the total force exerted on the valve by the system side on the valve is greater than the force exerted by the supply side, thus maintaining the valve in a stable closed state. When the water pressure on the system side drops due to fire spraying, the force exerted by the system side on the valve is weakened, and the force exerted by the supply side creates a pressure difference that squeezes the valve and pushes it open, allowing water to flow from the supply side to the system side. These devices mostly use a parallel valve structure. During the opening process, the valve needs to complete a large-angle flipping or translational movement. The overall transmission path and opening and closing stroke are relatively fixed, which is a common control and structural design in the industry.

[0004] Meanwhile, the large opening and closing stroke of the parallel valve disc of the existing fire extinguishing alarm valve will result in a slow response speed of the water supply passage opening, making it difficult to meet the water supply needs in the early stage of a fire. The large opening and closing angle will cause frequent and large collisions between the valve disc and the sealing surface, increasing the risk of damage. The control logic based on the water pressure difference on both sides is sensitive to water pressure fluctuations. When the water pressure on the system side drops briefly due to non-fire factors such as pipeline maintenance or water flow impact, it is easy to push the valve disc to open and trigger the alarm, resulting in false alarms. In addition, most devices will set a water flow delay device to avoid false alarms, so that there is a seven or eight-second delay from the water flow triggering the alarm signal to driving the hydraulic alarm bell to sound, which cannot transmit warning information in time. Summary of the Invention

[0005] In view of the shortcomings of existing technologies, the purpose of this invention is to provide an intelligent fire extinguishing alarm valve to solve the problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an intelligent fire extinguishing alarm valve, the structure of which includes: a main pipeline, an inclined valve disc, a locking assembly, and a water pressure detection and control module.

[0007] The main pipe has a bent structure, with the middle of the main pipe protruding backward to form a bent section. The head of the bent section is located inside the main pipe and has a valve chamber. The inclined valve is axially movable in the valve chamber. The inclined valve divides the inside of the main pipe into a system side located above the inclined valve and a water supply side located below the inclined valve. The inclination angle of the inclined valve is 40°.

[0008] An clearance notch is provided in front of the inclined valve disc, and a locking rod is horizontally fastened in the clearance notch. The locking rod is fixedly connected to the inclined valve disc.

[0009] The main pipe has an integrally formed locking cavity located directly in front of the valve disc cavity. A locking tongue is movably disposed in the locking cavity. The movement direction of the locking tongue is parallel to that of the inclined valve disc. The locking tongue is used to cooperate with the locking rod to limit the inclined valve disc. When the locking tongue retracts, the inclined valve disc can be opened under the hydraulic action of the water supply side.

[0010] A water pressure detection and control module is securely installed in the recessed area in front of the bend section of the main pipe. One end of the water pressure detection and control module is connected to the system side. The water pressure detection and control module controls the locking or unlocking state of the latch by detecting the water pressure on the system side.

[0011] Preferably, the water pressure detection and control module is a four-way structure, and the four ports of the four-way structure are respectively equipped with a system water pressure detection pipe, a water supply connection pipe, an unlocking control pipe, and a flow interception alarm linkage pipe.

[0012] A flow-blocking module is provided on the right side of the main pipeline. The flow-blocking module is fastened to the right side of the main pipeline at the position corresponding to the extension path of the system water pressure detection pipe.

[0013] The system water pressure detection pipe is securely installed directly above the water pressure detection and control module. Its body bends and extends to the right of the main pipeline. One end is connected to the water pressure detection and control module, and the other end is securely connected to the flow interception module. An auxiliary water pressure detection pipe is located directly above the flow interception module.

[0014] Preferably, an annular water pressure transmission chamber is provided on the inner wall of the valve disc cavity and below the inclined valve disc. The annular water pressure transmission chamber is separated from the valve disc cavity by a cavity wall structure. A plurality of water pressure linkage through holes are opened on the cavity wall of the annular water pressure transmission chamber. The water pressure linkage through holes penetrate the cavity wall of the annular water pressure transmission chamber and extend into the valve disc cavity. The opening end of the water pressure linkage through hole is located in the system side area of ​​the valve disc cavity to connect the annular water pressure transmission chamber with the system side.

[0015] The end of the auxiliary water pressure detection pipe furthest from the interception module is connected to the annular water pressure transmission cavity, allowing the system-side water flow to enter the annular water pressure transmission cavity through the water pressure linkage through hole, and then sequentially pass through the auxiliary water pressure detection pipe, the interception module, and the system water pressure detection pipe to the water pressure detection and control module, providing system-side water pressure to the water pressure detection and control module.

[0016] Preferably, the water pressure detection and control module has a water pressure chamber at the top inside, and a pressure baffle is provided inside the water pressure chamber. The pressure baffle is movably set in the vertical direction by a limiting structure on the inner wall of the water pressure chamber, and the limiting structure is used to restrict the movement direction of the pressure baffle.

[0017] A force transmission column is fixedly connected directly below the pressure baffle. The force transmission column extends vertically, and a force-applying spring is sleeved around the force transmission column. One end of the force-applying spring abuts against the lower surface of the pressure baffle, and the other end abuts against the inner bottom wall of the water pressure chamber. The force-applying spring is in a pre-compressed state and always applies an upward elastic force to the pressure baffle.

[0018] The water pressure detection and control module has a water supply transmission chamber located inside and directly below the water pressure chamber; the water supply transmission chamber is connected to the water supply connecting pipe directly below, the water supply transmission chamber is connected to the unlocking control pipe to the left, and the water supply transmission chamber is connected to the flow interception alarm linkage pipe to the right.

[0019] The water supply connecting pipe is equipped with a flow-blocking control block. The external dimensions of the flow-blocking control block match the inner wall dimensions of the water supply connecting pipe. The flow-blocking control block moves vertically along the axial direction of the water supply connecting pipe.

[0020] Preferably, the system water pressure detection pipe is connected to the water pressure chamber of the water pressure detection and control module, and the system side water flow can enter the water pressure chamber and contact the upper surface of the pressure baffle. The tail of the force transmission column is integrally formed with a limiting protrusion.

[0021] The flow control block has a through water flow channel from left to right along its axis; under normal conditions, the flow control block is located inside the bottom of the water supply connecting pipe, and the inner wall of the water supply connecting pipe blocks the water flow channel of the flow control block.

[0022] A limiting groove is provided in front of the water supply transmission cavity. A U-shaped transmission block is movably installed in the limiting groove along the front-back direction. A return spring is provided in the limiting groove and behind the U-shaped transmission block. One end of the return spring abuts against the wall of the limiting groove and the other end abuts against the U-shaped transmission block. The return spring always applies a forward elastic force to the U-shaped transmission block.

[0023] The U-shaped transmission block includes an integrally formed first transmission head and a second unlocking head. The heads of both the first transmission head and the second unlocking head are exposed inside the water supply transmission chamber. The first transmission head is correspondingly arranged with the limiting protrusion at the tail of the force transmission column, and the second unlocking head is correspondingly arranged with the flow control block.

[0024] Preferably, a water pressure unlocking assembly is fastened in the locking cavity. The water pressure unlocking assembly includes a lock tongue, an unlocking limit seat, a return spring, and a water pressure transmission block. The unlocking limit seat is fastened in the locking cavity, and the lock tongue moves through the unlocking limit seat in the front-to-back direction.

[0025] The locking tongue has an integrally formed limiting boss at its rear. The return spring is sleeved on the outer periphery of the limiting boss, and one end of the return spring abuts against the inner wall of the unlocking limiting seat. The return spring always applies a forward elastic force to the locking tongue. The head of the locking tongue protrudes into the valve disc cavity to provide a limit for the oblique valve disc in the valve disc cavity. Except for the head, the rest of the locking tongue is located inside the locking cavity.

[0026] A water supply chamber is provided directly below the locking cavity. The bottom of the locking tongue is provided with a sloping surface. The water pressure transmission block is movably disposed directly above the water supply chamber in the vertical direction. The top of the water pressure transmission block is provided with an inclined surface that matches the sloping surface at the bottom of the locking tongue. The inclined surface of the water pressure transmission block fits and cooperates with the sloping surface of the locking tongue. Several through guide holes are provided directly behind the water supply chamber at the bottom of the water pressure transmission block. The guide holes are connected to the water supply side.

[0027] Preferably, the flow-stopping alarm linkage pipe is fixedly installed on the right side of the water pressure detection and control module, and is positioned opposite to the unlocking control pipe. The head of the water supply connection pipe is fixedly installed inside the water supply side. The water supply side supplies water to the water supply transmission chamber of the water pressure detection and control module through the water supply connection pipe. The water supply transmission chamber then distributes the water to the unlocking control pipe and the flow-stopping alarm linkage pipe.

[0028] The end of the flow-stopping alarm linkage pipe away from the water pressure detection and control module extends to the bottom of the flow-stopping module and is equipped with a three-way connector. One port of the three-way connector is connected to the flow-stopping alarm linkage pipe, one port is vertically upward and connected to the inside of the flow-stopping module, and the other port extends outward and is securely connected to the alarm pipeline.

[0029] The interception module has a water pressure detection channel and an interception channel inside. The inner diameter of the water pressure detection channel matches the inner diameter of the interception alarm linkage pipe, and the water pressure detection channel and the interception channel are connected. One end of the water pressure detection channel is connected to the auxiliary water pressure detection pipe, and the other end is connected to the system water pressure detection pipe. This allows the system side water to flow into the water pressure chamber of the water pressure detection control module through the water pressure detection channel, providing pressure to the water pressure chamber.

[0030] Preferably, the intercepting module has an intercepting block movably provided at the tail end of the intercepting channel. When the device is in working condition, the intercepting block falls to the lowest end of the intercepting channel under the action of gravity.

[0031] When the system pressure decreases, the water supply connection pipe delivers water to the flow-stop alarm linkage pipe. The water flows through the vertical opening of the tee connector into the flow-stopping channel of the flow-stopping module and pushes the flow-stopping block upward. After the flow-stopping block moves to the preset position, it blocks the water pressure detection channel, preventing the system water from flowing into the water pressure detection control module's water pressure chamber through the water pressure detection channel. This prevents the water pressure chamber from being pressured again due to continuous water intake, which could cause the device to reset.

[0032] While the intercepting block blocks the water pressure detection channel, the water flow delivered by the intercepting alarm linkage pipe flows into the system side through the intercepting channel and the auxiliary water pressure detection pipe, forming a complete water flow loop. This water flow loop continuously applies upward pressure to the intercepting block, keeping the intercepting block in a blocked state.

[0033] When the fire is extinguished and the water supply is stopped, the intercepting block moves downward along the intercepting channel under the action of gravity, releasing the blockage of the water pressure detection channel. The water flow on the system side can then flow back into the water pressure chamber of the water pressure detection and control module through the water pressure detection channel, restoring the device to its initial standby state.

[0034] Preferably, a hydraulic alarm bell is securely installed on the right side of the alarm pipeline; a first control valve port is provided on the alarm pipeline;

[0035] An experimental pipeline is securely installed on the right side of the water supply side. The experimental pipeline is equipped with a second control valve port. The experimental pipeline is connected to the alarm pipeline, and a common drain outlet is provided directly below the experimental pipeline and the alarm pipeline.

[0036] A first water pressure gauge is securely installed on the left side of the main pipeline system via a first water pressure testing pipeline, and a second water pressure gauge is securely installed on the left side of the water supply side via a second water pressure testing pipeline. A compensator is securely installed between the first and second water pressure testing pipelines.

[0037] This invention discloses an intelligent fire extinguishing alarm valve, which has the following advantages:

[0038] 1. The main pipe of this invention has a bend section directly below it. This bend section optimizes the flow path of water on the supply side within the main pipe, preventing water from directly impacting the inclined valve disc and reducing the impact damage to the valve disc. At the same time, the device uses an inclined valve disc with a 40° tilt design, which significantly shortens the opening and closing stroke compared to the traditional parallel valve disc. Moreover, the valve disc's movement direction is more aligned with the direction of hydraulic action on the supply side. After the locking tongue is unlocked, it can be quickly opened under the push of the water pressure on the supply side, avoiding the opening delay caused by the large-angle flip of the traditional valve disc. In addition, the device directly monitors the changes in water pressure on the system side through a water pressure detection and control module, eliminating the need for a water flow delay device in traditional devices. This eliminates the seven or eight-second delay gap between the alarm and the water supply, and can trigger unlocking, water supply, and alarm linkage at the first moment when the water pressure on the system side drops due to a fire, thus buying time for rapid fire control in the early stages of a fire.

[0039] 2. Traditional fire alarm valves are prone to false alarms due to non-fire factors such as fluctuations in pipe network water pressure and water flow impact. This invention reduces the risk of false alarms through a dual protection mechanism. First, the guide hole in the water supply chamber is designed to only meet water replenishment needs, with insufficient water pressure to actuate the locking tongue, preventing false locking under non-fire conditions. Second, the water pressure detection and control module uses the pressure balance principle of the pressure baffle and the force spring to identify continuous drops and brief fluctuations in system water pressure, triggering action only when a fire-induced water pressure change is confirmed. This significantly reduces the interference of false alarms with fire safety management and the ineffective consumption of emergency resources. Furthermore, the smaller opening and closing angle of the inclined valve disc reduces frictional wear between the valve disc and the sealing surface, extending component lifespan and reducing subsequent maintenance frequency and costs.

[0040] 3. Traditional alarm valve assemblies often suffer from false alarms due to water leakage into the alarm pipeline caused by valve disc deformation, poor sealing, or dirt and debris trapped between the valve disc and valve seat. This invention eliminates this risk through a dual design: Firstly, the inclined valve disc adopts an inclined structure adapted to the valve disc cavity, and its short travel and uniform pressure against the sealing surface make it less prone to deformation or sealing failure over long-term use. Secondly, under normal conditions, the device uses a locking tongue to rigidly limit the inclined valve disc, combined with a pressure balance design between the water supply side and the system side, ensuring the valve disc remains in a stable sealing state and preventing leakage caused by slight valve disc displacement. Simultaneously, the water supply chamber guide hole is only responsible for water replenishment and its diameter is precisely controlled, preventing water leakage from creating alarm-triggering water pressure, thus eliminating false alarms caused by leakage from traditional valve discs at the source.

[0041] 4. This invention can achieve automatic reset of the entire process after the fire is extinguished. After the water supply side stops supplying water, the intercepting block automatically falls back to release the blockage. The system side first fills with water to restore water pressure and pushes each component to reset. Then the water supply side completes the filling. At the same time, the device integrates experimental pipeline and dual water pressure tester. Opening the valve of the experimental pipeline can simulate the working conditions to verify the alarm and control functions. The dual water pressure tester, together with the compensator, can monitor and balance the water pressure on both sides in real time. It is convenient for daily maintenance and testing, and can adapt to the water pressure fluctuation requirements of different scenarios such as commercial buildings, industrial plants, and high-rise buildings. Attached Figure Description

[0042] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0043] Figure 1 This is a schematic diagram of the overall structure of an intelligent fire extinguishing alarm valve according to the present invention.

[0044] Figure 2 This is a schematic diagram of the water pressure detection and control module and its internal structure according to the present invention.

[0045] Figure 3 This is a cross-sectional view of the water pressure detection and control module and related components of the present invention.

[0046] Figure 4 This is a cross-sectional view of the interception module of the present invention.

[0047] Figure 5 This is a cross-sectional view of the interception module and a schematic diagram of its state transitions according to the present invention.

[0048] Figure 6 This is a schematic diagram of the overall half-sectional structure of the present invention.

[0049] Figure 7 This is a cross-sectional view of the water pressure unlocking component and a schematic diagram of related components of the present invention.

[0050] Figure 8 This is a schematic diagram of the overall right rear view structure of the present invention.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Main pipe; 12. Bend section; 13. Valve disc cavity; 131. Locking cavity; 132. Water supply cavity; 133. Flow guide hole; 134. Annular water pressure transmission cavity; 135. Water pressure linkage through hole; 14a. System side; 14b. Water supply side;

[0053] 2. Inclined valve disc; 21. Clearance notch; 22. Locking rod;

[0054] 3. Water pressure detection and control module; 31a. System water pressure detection pipe; 31a1. Auxiliary water pressure detection pipe; 31b. Water supply connection pipe; 31c. Unlocking control pipe; 31d. Flow interception alarm linkage pipe; 32a. Water pressure chamber; 32b. Water supply transmission chamber; 32c. Limiting groove; 33. Pressure baffle; 34. Force transmission column; 341. Limiting protrusion; 35. Force application spring; 36. Flow interception control block; 361. Water flow channel; 37. U-shaped transmission block; 371. First transmission head; 372. Second unlocking head; 38. Reset spring;

[0055] 4. Flow interception module; 41a. Water pressure detection channel; 41b. Flow interception channel; 42. Flow interception block; 43. T-connector;

[0056] 5. Water pressure unlocking assembly; 51. Locking tongue; 511. Limiting boss; 512. Sloping surface; 52. Unlocking limit seat; 53. Return spring; 54. Water pressure transmission block; 541. Inclined surface;

[0057] 6. Alarm piping; 61. First control valve port; 62. Hydraulic alarm bell;

[0058] 7. Experimental piping; 71. Second control valve port; 72. Drain outlet;

[0059] 8a. First water pressure testing pipeline; 8b. Second water pressure testing pipeline; 81a. First water pressure gauge; 81b. Second water pressure gauge; 82. Compensator. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0061] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0062] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies are not connected through a transitional structure, but rather formed as a whole through a connecting structure. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0063] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] The large opening and closing stroke of the parallel valve disc in existing fire alarm valves results in a slow response speed when the water supply path is opened, making it difficult to meet the water supply needs in the early stages of a fire. The large opening angle causes frequent and large collisions between the valve disc and the sealing surface, increasing the risk of damage. The control logic based on the water pressure difference on both sides is sensitive to water pressure fluctuations. When the system experiences a brief drop in water pressure due to non-fire factors such as pipeline maintenance or water flow impact, it is easy to push the valve disc open and trigger the alarm, leading to false alarms. In addition, most devices are equipped with a water flow delay device to avoid false alarms, resulting in a seven- to eight-second delay from the water flow triggering the alarm signal to driving the hydraulic alarm bell to sound, which cannot transmit warning information in a timely manner. Therefore, in order to solve the above problems, this paper proposes the following technical solution:

[0065] Please see Figures 1 to 8 This invention provides a technical solution for an intelligent fire alarm valve: its structure includes: a main pipeline 1, an inclined valve disc 2, a locking assembly, and a water pressure detection and control module 3.

[0066] The main pipe 1 has a bent structure, with a bent section 12 formed by a rearward protrusion in the middle. A valve disc cavity 13 is located inside the main pipe 1 at the head of the bent section 12. An inclined valve disc 2 is axially movable within the valve disc cavity 13. The inclined valve disc 2 divides the interior of the main pipe 1 into a system side 14a above the inclined valve disc 2 and a water supply side 14b below the inclined valve disc 2, with an inclination angle of 40°. A clearance notch 21 is provided directly in front of the inclined valve disc 2, and a locking rod 22 is laterally fastened within the clearance notch 21. The locking rod 22 is fixedly connected to the inclined valve disc 2; a locking cavity 131 is integrally formed inside the main pipe 1, located directly in front of the valve disc cavity 13. A locking tongue 51 is movably arranged in the locking cavity 131, and the direction of movement of the locking tongue 51 is parallel to that of the inclined valve disc 2. The locking tongue 51 is used to cooperate with the locking rod 22 to limit the inclined valve disc 2. When the locking tongue 51 retracts, the inclined valve disc 2 can be opened under the hydraulic action of the water supply side 14b; a water pressure detection and control module 3 is fastened to the recess located in front of the bend section 12 on the outside of the main pipe 1. One end of the water pressure detection and control module 3 is connected to the system side 14a. The water pressure detection and control module 3 controls the locking or unlocking state of the locking tongue 51 by detecting the water pressure on the system side 14a. The main pipe 1 adopts a bent structure. In the valve disc cavity 13 at the head of the middle bent section 12, an inclined valve disc 2 with an axially movable tilt angle of 40° is installed. This valve disc divides the inside of the main pipe 1 into the upper system side 14a (connected to terminals such as fire sprinklers) and the lower water supply side 14b (connected to the water source). Under normal conditions, the inclined valve disc 2 is limited and held in place by the locking component. The locking rod 22 inside the clearance notch 21 directly in front of the valve disc in the closed state cooperates with the locking tongue 51 inside the locking cavity 131 directly in front of the valve disc cavity 13. Under the elastic force of the return spring 53, the head of the locking tongue 51 protrudes into the valve disc cavity 13 and locks the locking rod 22, thereby restricting the axial movement of the inclined valve disc 2 and ensuring the isolation of the passage between the water supply side 14b and the system side 14a. At the same time, the water pressure detection and control module 3 at the external recess of the main pipe 1 is connected to the system side 14a through the pipeline to monitor the water pressure of the system side 14a in real time in preparation for responding to changes in operating conditions.

[0067] The water pressure detection and control module 3 has a four-way structure. The four ports of the four-way structure are respectively installed with a system water pressure detection pipe 31a, a water supply connection pipe 31b, an unlocking control pipe 31c, and a flow-stopping alarm linkage pipe 31d. A flow-stopping module 4 is provided on the right side of the main pipe 1. The flow-stopping module 4 is fixedly installed on the right side of the main pipe 1 at the position corresponding to the extension path of the system water pressure detection pipe 31a. The system water pressure detection pipe 31a is fixedly installed directly above the water pressure detection and control module 3. Its pipe body bends and extends to the right side of the main pipe 1. One end is connected to the water pressure detection and control module 3, and the other end is fixedly connected to the flow-stopping module 4. A secondary water pressure detection pipe 31a1 is provided directly above the flow-stopping module 4. The water pressure detection and control module 3 adopts a four-way structure. Its four ports are respectively connected to the system water pressure detection pipe 31a, the water supply connection pipe 31b, the unlocking control pipe 31c, and the flow-stopping alarm linkage pipe 31d. Each pipe has a clear division of labor and forms a collaborative transmission path. Specifically, the system water pressure detection pipe 31a extends from directly above the water pressure detection and control module 3 to the flow-blocking module 4. The auxiliary water pressure detection pipe 31a1 connects the flow-blocking module 4 to the annular water pressure transmission cavity 134 on the inner wall of the valve disc cavity 13. The annular water pressure transmission cavity 134 is connected to the system side 14a through the water pressure linkage through hole 135 on the cavity wall, thus forming a water pressure signal transmission path of "water flow on system side 14a → water pressure linkage through hole 135 → annular water pressure transmission cavity 134 → auxiliary water pressure detection pipe 31a1 → flow-blocking module 4 → system water pressure detection pipe 31a → water pressure detection and control module 3", providing the water pressure basis of system side 14a for subsequent control actions.

[0068] An annular water pressure transmission chamber 134 is provided on the inner wall of the valve disc cavity 13 and below the inclined valve disc 2. The annular water pressure transmission chamber 134 is separated from the valve disc cavity 13 by a cavity wall structure. Several water pressure linkage through holes 135 are opened on the cavity wall of the annular water pressure transmission chamber 134. The water pressure linkage through holes 135 penetrate the cavity wall of the annular water pressure transmission chamber 134 and extend into the interior of the valve disc cavity 13. The opening end of the water pressure linkage through hole 135 is located in the system side 14a region of the valve disc cavity 13, so as to connect the annular water pressure transmission chamber 134 with the system side 14a region. 4a; The end of the auxiliary water pressure detection pipe 31a1 furthest from the intercepting module 4 is connected to the annular water pressure transmission cavity 134, allowing the water flow from the system side 14a to enter the annular water pressure transmission cavity 134 through the water pressure linkage through hole 135, and then sequentially through the auxiliary water pressure detection pipe 31a1, the intercepting module 4, and the system water pressure detection pipe 31a, before being transmitted to the water pressure detection and control module 3, providing the water pressure from the system side 14a to the water pressure detection and control module 3. The water pressure cavity 32a inside the water pressure detection and control module 3 is the key area for converting the water pressure signal into mechanical action. A pressure baffle 33, whose movement direction is limited by a limiting structure, has a force transmission column 34 extending vertically fixedly connected to its lower surface. A force-applying spring 35, which is sleeved around the force transmission column 34, is in a pre-compressed state and always applies an upward elastic force to the pressure baffle 33. Under normal conditions, water from the system side 14a flows into the water pressure chamber 32a through the aforementioned transmission path, acting on the upper surface of the pressure baffle 33 and forming a downward water pressure force. This force balances the upward elastic force of the force-applying spring 35, thus balancing the pressure baffle 33 and the force transmission column. The limiting protrusion 341 of 34 is located between the first transmission head 371 and the second unlocking head 372 of the U-shaped transmission block 37, maintaining a stable position; at the same time, the water supply transmission chamber 32b directly below the water pressure chamber 32a is connected to the water supply side 14b through the water supply connecting pipe 31b. The flow control block 36 in the water supply connecting pipe 31b is at the bottom position, and its water flow channel 361 is blocked by the inner wall of the water supply pipe, temporarily blocking the water flow from the water supply side 14b to the water supply transmission chamber 32b, ensuring that the pressure of the water pressure detection and control module 3 is stable in the initial state.

[0069] A water pressure chamber 32a is provided at the top of the water pressure detection and control module 3. A pressure baffle 33 is installed inside the water pressure chamber 32a. The pressure baffle 33 is vertically movable via a limiting structure on the inner wall of the water pressure chamber 32a, which restricts the direction of movement of the pressure baffle 33. A force transmission column 34 is fixedly connected directly below the pressure baffle 33, extending vertically. A force application spring 35 is sleeved around the force transmission column 34, with one end of the spring abutting against the lower surface of the pressure baffle 33 and the other end abutting against the water pressure. The inner bottom wall of the pressure chamber 32a; the force spring 35 is in a pre-compressed state, always applying an upward elastic force to the pressure baffle 33; the water pressure detection and control module 3 has a water supply transmission chamber 32b located directly below the water pressure chamber 32a; the lower part of the water supply transmission chamber 32b is connected to the water supply connecting pipe 31b, the left side of the water supply transmission chamber 32b is connected to the unlocking control pipe 31c, and the right side of the water supply transmission chamber 32b is connected to the flow-stopping alarm linkage pipe 31d; the water supply connecting pipe 31b has a flow-stopping control inside. Block 36, the external dimensions of the flow control block 36 match the inner wall dimensions of the water supply connecting pipe 31b. The flow control block 36 moves vertically along the axial direction of the water supply connecting pipe 31b. The locking cavity 131 serves as the mounting carrier for the locking assembly. The unlocking limit seat 52 inside the cavity fixes the direction of movement of the locking tongue 51. The return spring 53, which is sleeved on the outer periphery of the limit boss 511 at the tail of the locking tongue 51, always applies a forward elastic force to the locking tongue 51, causing the head of the locking tongue 51 to continuously protrude into the valve disc cavity 13, locking with the inclined valve disc 2. The fixed rod 22 is used to achieve the limiting position and lock the water supply chamber 132 directly below the locking chamber 131. It is connected to the water supply side 14b through several through guide holes 133 opened directly behind it. The design diameter and water flow pressure of the guide holes 133 are set to only meet the water replenishment needs of the water supply chamber 132, so that the water supply chamber 132 maintains a stable water reserve. At the same time, the water pressure generated is insufficient to drive the water pressure transmission block 54 directly above the water supply chamber 132 to move, thereby preventing the locking tongue 51 from retracting erroneously due to water flow fluctuations in non-fire conditions.

[0070] The system water pressure detection pipe 31a is connected to the water pressure chamber 32a of the water pressure detection and control module 3. Water flow from the system side 14a can enter the water pressure chamber 32a and contact the upper surface of the pressure baffle 33. The tail of the force transmission column 34 is integrally formed with a limiting protrusion 341. The flow control block 36 has a through water flow channel 361 from left to right along its axial direction. Under normal conditions, the flow control block 36 is located inside the bottom of the water supply connecting pipe 31b, and the inner wall of the water supply connecting pipe 31b blocks the water flow channel 361 of the flow control block 36. A limiting groove 32c is provided directly in front of the water supply transmission chamber 32b. A U-shaped transmission block 37 is movably installed in the limiting groove 32c along the front-back direction. A return spring 38 is provided in the limiting groove 32c and behind the U-shaped transmission block 37. One end of the return spring 38 abuts against the groove wall of the limiting groove 32c and the other end abuts against the U-shaped transmission block 37. The return spring 38 always applies a forward elastic force to the U-shaped transmission block 37. The U-shaped transmission block 37 includes an integrally formed first transmission head 371 and a second unlocking head 372. Both the heads of the moving head 371 and the second unlocking head 372 are exposed inside the water supply transmission chamber 32b. The first driving head 371 is correspondingly set with the limiting protrusion 341 at the tail of the force transmission column 34, and the second unlocking head 372 is correspondingly set with the flow control block 36. When a fire occurs, the sprinkler heads and other terminals connected to the system side 14a start spraying water, causing the water pressure on the system side 14a to drop rapidly. This change is transmitted through the system side 14a → water pressure linkage through hole 135 → annular water pressure transmission chamber 134 → auxiliary water pressure detection pipe 31a1 → flow control block. The water pressure is transmitted from block 4 to the water pressure chamber 32a of the system water pressure detection pipe 31a to the water pressure detection control module 3. At this time, the water pressure force on the system side 14a of the upper surface of the pressure baffle 33 decreases, and the upward elastic force of the pre-compressed force spring 35 takes the lead, pushing the pressure baffle 33 and the force transmission column 34 to move upward in the vertical direction. The limiting protrusion 341 at the tail of the force transmission column 34 moves upward in sync, creating mechanical transmission conditions for subsequent triggering of the unlocking action, realizing the first step of transformation from water pressure signal change to mechanical component action.

[0071] A water pressure unlocking assembly 5 is securely installed inside the locking cavity 131. The water pressure unlocking assembly 5 includes a locking tongue 51, an unlocking limit seat 52, a return spring 53, and a water pressure transmission block 54. The unlocking limit seat 52 is securely installed inside the locking cavity 131, and the locking tongue 51 moves through the unlocking limit seat 52 in the front-back direction. A limit boss 511 is integrally formed at the rear of the locking tongue 51. The return spring 53 is sleeved on the outer periphery of the limit boss 511, and one end of the return spring 53 abuts against the inner wall of the unlocking limit seat 52. The return spring 53 always applies forward elasticity to the locking tongue 51. The locking tongue 51 extends into the valve disc cavity 13 under the influence of force, providing a limit for the inclined valve disc 2 inside the valve disc cavity 13. Except for the head, the rest of the locking tongue 51 is located inside the locking cavity 131. A water supply cavity 132 is provided directly below the locking cavity 131. The bottom of the locking tongue 51 has a ramp surface 512. The water pressure transmission block 54 is vertically movably positioned directly above the water supply cavity 132, and the top of the water pressure transmission block 54 has an inclined surface 541 that matches the ramp surface 512 at the bottom of the locking tongue 51. The inclined surface 541 of the water pressure transmission block 54 and the locking tongue 51... The inclined surface 512 of the water pressure transmission block 54 fits snugly. Several through guide holes 133 are opened directly behind the water supply cavity 132 at the bottom of the water pressure transmission block 54. The guide holes 133 are connected to the water supply side 14b. The U-shaped transmission block 37 in the limiting groove 32c directly in front of the water supply transmission cavity 32b is subjected to a forward elastic force by the rear return spring 38 under normal conditions, maintaining its initial position. When the force transmission column 34 moves upward with the pressure partition 33, the limiting protrusion 341 at its tail contacts the first transmission head 371 of the U-shaped transmission block 37 and pushes the U-shaped transmission block 37 to overcome the return. The elastic force of the spring 38 moves backward, and the second unlocking head 372 of the U-shaped transmission block 37 moves backward in sync and acts on the flow-stopping control block 36 in the water supply connecting pipe 31b, pushing the flow-stopping control block 36 to move upward along the axis of the water supply connecting pipe 31b; as the flow-stopping control block 36 moves upward, its originally blocked water flow channel 361 gradually connects with the water supply transmission chamber 32b, and the water flow on the water supply side 14b enters the water supply transmission chamber 32b through the water flow channel 361 of the water supply connecting pipe 31b, and then flows to the unlocking control pipe 31c and the flow-stopping alarm linkage pipe 31d respectively.

[0072] The flow-stopping alarm linkage pipe 31d is securely installed to the right of the water pressure detection and control module 3, opposite to the unlocking control pipe 31c. The head of the water supply connecting pipe 31b is securely installed inside the water supply side 14b. The water supply side 14b supplies water to the water supply transmission chamber 32b of the water pressure detection and control module 3 through the water supply connecting pipe 31b. The water supply transmission chamber 32b then distributes the water flow to the unlocking control pipe 31c and the flow-stopping alarm linkage pipe 31d. The end of the flow-stopping alarm linkage pipe 31d away from the water pressure detection and control module 3 extends to the bottom of the flow-stopping module 4 and is equipped with a three-way connector 43. One port of connector 43 is connected to the flow-stopping alarm linkage pipe 31d, another port is vertically upward and connected to the inside of the flow-stopping module 4, and the other port extends outward and is securely connected to the alarm pipe 6; the flow-stopping module 4 has a water pressure detection channel 41a and a flow-stopping channel 41b inside. The inner diameter of the water pressure detection channel 41a matches the inner diameter of the flow-stopping alarm linkage pipe 31d, and the water pressure detection channel 41a and the flow-stopping channel 41b are connected. One end of the water pressure detection channel 41a is connected to the auxiliary water pressure detection pipe 31a1, and the other end is connected to the system water pressure detection pipe 31a. The system side 14a water flows through the water pressure detection channel 41a into the water pressure detection control module 3's water pressure chamber 32a, providing pressure to the water pressure chamber 32a. The water flowing from the water supply transmission chamber 32b to the unlocking control pipe 31c is finally delivered to the water supply chamber 132 directly below the locking chamber 131, causing the water pressure in the water supply chamber 132 to rapidly increase to exceed the water pressure generated by the daily water replenishment of the guide hole 133 in a short time. This increased water pressure acts on the bottom of the water pressure transmission block 54 directly above the water supply chamber 132, pushing the water pressure transmission block 54 to move upward in the vertical direction. 4. The inclined surface 541 at the top fits into the slope surface 512 at the bottom of the locking tongue 51. When the water pressure transmission block 54 moves upward, the vertical thrust is converted into a horizontal force through the guiding effect of the inclined surface 541, which pushes the locking tongue 51 to retract backward against the elastic force of the return spring 53. When the head of the locking tongue 51 is completely out of the valve disc cavity 13, its limiting effect on the locking rod 22 of the inclined valve disc 2 is released. The water pressure on the water supply side 14b then pushes the inclined valve disc 2 to move and open along the axial direction of the valve disc cavity 13, realizing the transportation of water from the water supply side 14b to the system side 14a.

[0073] A flow-stopping block 42 is movably installed at the tail end of the flow-stopping channel 41b of the flow-stopping module 4. When the device is in standby mode, the flow-stopping block 42 falls to the lowest end of the flow-stopping channel 41b under gravity. When the pressure on the system side 14a decreases, and the water supply connecting pipe 31b supplies water to the flow-stopping alarm linkage pipe 31d, the water flows through the vertical opening of the tee connector 43 into the flow-stopping channel 41b of the flow-stopping module 4, pushing the flow-stopping block 42 upwards. After the flow-stopping block 42 moves to a preset position, it blocks the water pressure detection channel 41a, preventing the water flow from the system side 14a from flowing into the water pressure chamber 32a of the water pressure detection control module 3, thus avoiding... The pressure chamber 32a, due to continuous water intake, experiences renewed downward pressure, causing the device to reset. Simultaneously, while the intercepting block 42 blocks the water pressure detection channel 41a, the water flow from the intercepting alarm linkage pipe 31d flows through the intercepting channel 41b and the auxiliary water pressure detection pipe 31a1 into the system side 14a, forming a complete water flow loop. This loop continuously applies upward pressure to the intercepting block 42, keeping it blocked. When the fire stops and the water supply side 14b stops supplying water, the intercepting block 42 moves downward along the intercepting channel 41b under gravity, releasing the blockage of the water pressure detection channel 41a. Water flow from the system side 14a can then re-enter the water pressure detection channel 41a. Water flows into the water pressure chamber 32a of the water pressure detection and control module 3, restoring the device to its initial standby state. Water flowing from the water supply transmission chamber 32b to the interception alarm linkage pipe 31d extends along the pipeline to the tee connector 43 directly below the interception module 4, and flows into the alarm pipeline 6 through the outward extension port of the tee connector 43, driving the hydraulic alarm bell 62 on the right side of the alarm pipeline 6 to sound. On the other hand, the water flows into the interception channel 41b of the interception module 4 through the vertical upward port of the tee connector 43, pushing the interception block 42, which was originally falling due to gravity, upward at the end of the interception channel 41b. When the interception block 42 moves to the preset position... This effectively blocks the water pressure detection channel 41a inside the interception module 4, preventing the water flow from the system side 14a to the water pressure chamber 32a of the water pressure detection control module 3 through the water pressure detection channel 41a. This prevents the water pressure chamber 32a from re-forming downward pressure due to continuous water intake, thus causing the pressure baffle 33 and force transmission column 34 to reset. This ensures that the locking tongue 51 remains unlocked and the oblique valve disc 2 remains open. At the same time, the water flow from the interception alarm linkage pipe 31d flows into the system side 14a through the interception channel 41b and the auxiliary water pressure detection pipe 31a1, forming a complete water flow loop. This loop continuously applies upward pressure to the interception block 42, keeping the blockage stable.

[0074] A hydraulic alarm bell 62 is securely installed to the right of alarm pipe 6; a first control valve port 61 is provided on alarm pipe 6; an experimental pipe 7 is securely installed to the right of water supply side 14b, and a second control valve port 71 is provided on experimental pipe 7. Experimental pipe 7 is connected to alarm pipe 6, and a common drain outlet 72 is provided directly below experimental pipe 7 and alarm pipe 6; a first water pressure gauge 81a is securely installed to the left of main pipe 1 system side 14a via a first water pressure detection pipe 8a, and a second water pressure detection pipe 81a is securely installed to the left of water supply side 14b via a second water pressure detection pipe 81a. b. A second water pressure gauge 81b is securely installed. A compensator 82 is securely installed between the first water pressure testing pipeline 8a and the second water pressure testing pipeline 8b. The experimental pipeline 7 on the right side of the water supply side 14b is connected to the alarm pipeline 6. Opening the second control valve port 71 can simulate the water flow on the water supply side 14b and verify the alarm and control functions. The first water pressure gauge 81a and the second water pressure gauge 81b installed on the system side 14a and the water supply side 14b of the main pipeline 1, respectively, can monitor the water pressure on both sides in real time. The compensator 82 between them is used to balance the pressure fluctuations in the pipeline.

[0075] Fire-related reset and reciprocating operation principle: After the fire is extinguished, the water supply side 14b first stops supplying water, and the water pressure in the interception alarm linkage pipe 31d disappears. The interception block 42 in the interception channel 41b of the interception module 4 moves vertically downward along the channel under its own gravity, completely releasing the blockage of the water pressure detection channel 41a. At this time, the inclined valve disc 2 falls back and closes along the valve disc cavity 13 under its own gravity. During the closing process, the inclined valve disc 2 will drive the locking rod 22 synchronously. After the moving and locking rod 22 contacts the head of the locking tongue 51, the locking tongue 51 temporarily retracts due to the resistance of its components, creating space for the oblique valve disc 2 to fully reset. Once the oblique valve disc 2 is fully closed, the locking tongue 51 completes the repositioning of the locking rod 22, initially achieving mechanical locking of the oblique valve disc 2. After the oblique valve disc 2 is locked, the system side 14a initiates the water filling process, continuously injecting water into the system side 14a pipeline until the normal operating water pressure is restored. After the water pressure on side 14a is restored, the water flow re-enters the water pressure detection channel 41a of the interception module 4 and the system water pressure detection pipe 31a into the water pressure chamber 32a of the water pressure detection and control module 3. The water pressure force acting on the upper surface of the pressure baffle 33 gradually increases. When this force is greater than the elastic force of the force spring 35, it pushes the pressure baffle 33 and the force transmission column 34 to move downward in the vertical direction. The limiting protrusion 341 at the tail of the force transmission column 34 then disengages from the first transmission head 3 of the U-shaped transmission block 37. Upon contact with 71, the U-shaped transmission block 37 is reset forward under the elastic force of the return spring 38, and its second unlocking head 372 moves forward synchronously and re-locks the flow control block 36 in the water supply connecting pipe 31b; at the same time, the flow control block 36, having lost the upward force of the water flow on the water supply side 14b, falls back to the bottom of the water supply connecting pipe 31b under its own gravity, and its water flow channel 361 is blocked again by the inner wall of the water supply pipe, blocking the water flow path between the water supply side 14b and the water supply transmission cavity 32b. In addition, the locking tongue 51 in the locking cavity 131 extends forward and resets under the elastic force of the return spring 53. The water pressure transmission block 54 in the water supply cavity 132 falls back in the vertical direction due to the disappearance of the pressure on the water supply side 14b. Finally, the inclined valve 2 remains closed with the assistance of the stable water pressure on the system side 14a. After the water pressure on the system side 14a is fully restored, the water supply side 14b starts the water filling process. The water flow is gradually injected into the pipeline of the water supply side 14b until the preset working water pressure is reached. At this point, all components of the device are restored to the initial ready-to-work state.

[0076] The above description only outlines the basic principles and preferred embodiments of the present invention. Those skilled in the art can make many changes and modifications based on the above description, and these changes and modifications should fall within the protection scope of the present invention.

[0077] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intelligent fire extinguishing alarm valve, the structure of which includes: Main pipeline (1), inclined valve disc (2), locking assembly, water pressure detection and control module (3). The main pipe (1) is a bent structure. The middle part of the main pipe (1) protrudes backward to form a bent section (12). The head of the bent section (12) is located inside the main pipe (1) and a valve chamber (13) is provided. The inclined valve (2) is axially movable in the valve chamber (13). The inclined valve (2) divides the interior of the main pipe (1) into a system side (14a) above the inclined valve (2) and a water supply side (14b) below the inclined valve (2). The inclined angle of the inclined valve (2) is 40°. An avoidance notch (21) is provided in front of the oblique valve disc (2), and a locking rod (22) is horizontally fastened in the avoidance notch (21). The locking rod (22) is fixedly connected to the oblique valve disc (2). The main pipe (1) has an integrally formed locking cavity (131) located directly in front of the valve disc cavity (13). A locking tongue (51) is movably arranged in the locking cavity (131). The movement direction of the locking tongue (51) is parallel to that of the inclined valve disc (2). The locking tongue (51) is used to cooperate with the locking rod (22) to limit the inclined valve disc (2). When the locking tongue (51) retracts, the inclined valve disc (2) can be opened under the hydraulic action of the water supply side (14b). A water pressure detection and control module (3) is securely installed in the recessed area in front of the bend section (12) on the outside of the main pipe (1). One end of the water pressure detection and control module (3) is connected to the system side (14a). The water pressure detection and control module (3) controls the locking or unlocking state of the latch (51) by detecting the water pressure on the system side (14a). The water pressure detection and control module (3) is a four-way structure, and the four ports of the four-way structure are respectively equipped with a system water pressure detection pipe (31a), a water supply connection pipe (31b), an unlocking control pipe (31c), and a flow interception alarm linkage pipe (31d). A flow-blocking module (4) is provided on the right side of the main pipeline (1). The flow-blocking module (4) is fastened to the right side of the main pipeline (1) at the position corresponding to the extension path of the system water pressure detection pipe (31a). The system water pressure detection pipe (31a) is fastened and installed directly above the water pressure detection control module (3). Its pipe body bends and extends to the right of the main pipe (1). One end is connected to the water pressure detection control module (3), and the other end is fastened and connected to the interception module (4). The auxiliary water pressure detection pipe (31a1) is provided directly above the interception module (4). An annular water pressure transmission chamber (134) is provided on the inner wall of the valve disc cavity (13) and below the inclined valve disc (2). The annular water pressure transmission chamber (134) and the valve disc cavity (13) are separated by a cavity wall structure. Several water pressure linkage through holes (135) are provided on the cavity wall of the annular water pressure transmission chamber (134). The water pressure linkage through holes (135) penetrate the cavity wall of the annular water pressure transmission chamber (134) and extend into the valve disc cavity (13). The opening end of the water pressure linkage through hole (135) is located in the system side (14a) region of the valve disc cavity (13) to connect the annular water pressure transmission chamber (134) and the system side (14a).

2. The intelligent fire extinguishing alarm valve as described in claim 1, characterized in that: The end of the auxiliary water pressure detection pipe (31a1) away from the interception module (4) is connected to the annular water pressure transmission cavity (134), so that the water flow on the system side (14a) enters the annular water pressure transmission cavity (134) through the water pressure linkage through hole (135), and then passes through the auxiliary water pressure detection pipe (31a1), the interception module (4), and the system water pressure detection pipe (31a) in sequence, and is transmitted to the water pressure detection and control module (3), so as to provide the water pressure on the system side (14a) to the water pressure detection and control module (3).

3. The intelligent fire extinguishing alarm valve as described in claim 2, characterized in that: The water pressure detection and control module (3) has a water pressure chamber (32a) at the top inside. The water pressure chamber (32a) is provided with a pressure baffle (33). The pressure baffle (33) is set to move vertically through a limiting structure on the inner wall of the water pressure chamber (32a). The limiting structure is used to restrict the movement direction of the pressure baffle (33). A force transmission column (34) is fixedly connected directly below the pressure baffle (33). The force transmission column (34) extends vertically, and a force application spring (35) is sleeved around the force transmission column (34). One end of the force application spring (35) abuts against the lower surface of the pressure baffle (33), and the other end abuts against the inner bottom wall of the water pressure chamber (32a). The force application spring (35) is in a pre-compressed state and always applies an upward elastic force to the pressure baffle (33). The water pressure detection and control module (3) has a water supply transmission chamber (32b) located directly below the water pressure chamber (32a); the water supply transmission chamber (32b) is connected to the water supply connecting pipe (31b) directly below, the water supply transmission chamber (32b) is connected to the unlocking control pipe (31c) to the left, and the water supply transmission chamber (32b) is connected to the flow interception alarm linkage pipe (31d) to the right. The water supply connecting pipe (31b) is provided with a flow-blocking control block (36) inside. The external dimensions of the flow-blocking control block (36) match the inner wall dimensions of the water supply connecting pipe (31b). The flow-blocking control block (36) moves vertically along the axial direction of the water supply connecting pipe (31b).

4. The intelligent fire extinguishing alarm valve as described in claim 3, characterized in that: The system water pressure detection pipe (31a) is connected to the water pressure chamber (32a) of the water pressure detection control module (3). Water flow from the system side (14a) can enter the water pressure chamber (32a) and contact the upper surface of the pressure baffle (33). The tail of the force transmission column (34) is integrally formed with a limit protrusion (341). The flow control block (36) has a through water flow channel (361) from left to right along its axis; under normal conditions, the flow control block (36) is located inside the bottom of the water supply connecting pipe (31b), and the inner wall of the water supply connecting pipe (31b) blocks the water flow channel (361) of the flow control block (36). A limiting groove (32c) is provided in front of the water supply transmission chamber (32b). A U-shaped transmission block (37) is movably installed in the limiting groove (32c) along the front-back direction. A return spring (38) is provided in the limiting groove (32c) and behind the U-shaped transmission block (37). One end of the return spring (38) abuts against the groove wall of the limiting groove (32c) and the other end abuts against the U-shaped transmission block (37). The return spring (38) always applies a forward elastic force to the U-shaped transmission block (37). The U-shaped transmission block (37) includes an integrally formed first transmission head (371) and a second unlocking head (372). The heads of the first transmission head (371) and the second unlocking head (372) are both exposed inside the water supply transmission chamber (32b). The first transmission head (371) is correspondingly provided with the limiting protrusion (341) at the tail of the force transmission column (34), and the second unlocking head (372) is correspondingly provided with the flow control block (36).

5. The intelligent fire extinguishing alarm valve as described in claim 1, characterized in that: A water pressure unlocking assembly (5) is fastened in the locking cavity (131). The water pressure unlocking assembly (5) includes a lock tongue (51), an unlocking limit seat (52), a return spring (53), and a water pressure transmission block (54). The unlocking limit seat (52) is fastened in the locking cavity (131), and the lock tongue (51) moves through the unlocking limit seat (52) in the front-back direction. The locking tongue (51) has an integrally formed limiting boss (511) at its rear. The return spring (53) is sleeved on the outer periphery of the limiting boss (511), and one end of the return spring (53) abuts against the inner wall of the unlocking limiting seat (52). The return spring (53) always applies a forward elastic force to the locking tongue (51). The head of the locking tongue (51) protrudes into the valve disc cavity (13) to provide a limit for the oblique valve disc (2) in the valve disc cavity (13). Except for the head, the rest of the locking tongue (51) is located inside the locking cavity (131). A water supply chamber (132) is provided directly below the locking cavity (131). The bottom of the locking tongue (51) is provided with a sloping surface (512). The water pressure transmission block (54) is movably arranged in the vertical direction directly above the water supply chamber (132). The top of the water pressure transmission block (54) is provided with an inclined surface (541) that matches the bottom sloping surface (512) of the locking tongue (51). The inclined surface (541) of the water pressure transmission block (54) fits and cooperates with the sloping surface (512) of the locking tongue (51). Several through guide holes (133) are provided directly behind the bottom water supply chamber (132) of the water pressure transmission block (54). The guide holes (133) are connected to the water supply side (14b).

6. The intelligent fire extinguishing alarm valve as described in claim 2, characterized in that: The flow-stop alarm linkage pipe (31d) is fastened to the right of the water pressure detection and control module (3) and is positioned opposite to the unlocking control pipe (31c). The head of the water supply connecting pipe (31b) is fastened inside the water supply side (14b). The water supply side (14b) supplies water to the water supply transmission chamber (32b) of the water pressure detection and control module (3) through the water supply connecting pipe (31b). The water supply transmission chamber (32b) then distributes the water to the unlocking control pipe (31c) and the flow-stop alarm linkage pipe (31d). The end of the flow-blocking alarm linkage pipe (31d) away from the water pressure detection and control module (3) extends to the bottom of the flow-blocking module (4) and is equipped with a three-way connector (43). One port of the three-way connector (43) is connected to the flow-blocking alarm linkage pipe (31d), one port is vertically upward and connected to the inside of the flow-blocking module (4), and the other port extends outward and is securely connected to the alarm pipeline (6). The interception module (4) has a water pressure detection channel (41a) and an interception channel (41b) inside. The inner diameter of the water pressure detection channel (41a) matches the inner diameter of the interception alarm linkage pipe (31d). The water pressure detection channel (41a) and the interception channel (41b) are connected. One end of the water pressure detection channel (41a) is connected to the auxiliary water pressure detection pipe (31a1), and the other end is connected to the system water pressure detection pipe (31a). This allows the water from the system side (14a) to flow through the water pressure detection channel (41a) into the water pressure chamber (32a) of the water pressure detection control module (3), providing pressure to the water pressure chamber (32a).

7. The intelligent fire extinguishing alarm valve as described in claim 3, characterized in that: The intercepting module (4) has an intercepting block (42) movably installed at the tail of the intercepting channel (41b). When the device is in working condition, the intercepting block (42) falls to the lowest end of the intercepting channel (41b) under the action of gravity. When the pressure on the system side (14a) decreases, the water supply connecting pipe (31b) delivers water to the interception alarm linkage pipe (31d). The water flows through the vertical opening of the three-way connector (43) into the interception channel (41b) of the interception module (4) and pushes the interception block (42) upward. After the interception block (42) moves upward to the preset position, it blocks the water pressure detection channel (41a) and prevents the water flow on the system side (14a) from flowing into the water pressure chamber (32a) of the water pressure detection control module (3) through the water pressure detection channel (41a). This prevents the water pressure chamber (32a) from being re-pressurized due to continuous water intake, which would cause the device to reset. While the intercepting block (42) blocks the water pressure detection channel (41a), the water flow delivered by the intercepting alarm linkage pipe (31d) flows into the system side (14a) through the intercepting channel (41b) and the auxiliary water pressure detection pipe (31a1), forming a complete water flow loop. This water flow loop continuously applies upward pressure to the intercepting block (42), keeping the intercepting block (42) in a blocked state. When the fire stops and the water supply side (14b) stops supplying water, the intercepting block (42) moves downward along the intercepting channel (41b) under the action of gravity, releasing the blockage of the water pressure detection channel (41a). The water flow on the system side (14a) can flow back into the water pressure chamber (32a) of the water pressure detection control module (3) through the water pressure detection channel (41a), so that the device returns to the initial standby state.

8. The intelligent fire extinguishing alarm valve as described in claim 6, characterized in that: A hydraulic alarm bell (62) is fastened to the right side of the alarm pipeline (6); a first control valve port (61) is provided on the alarm pipeline (6). An experimental pipeline (7) is fastened to the right side of the water supply side (14b). A second control valve port (71) is provided on the experimental pipeline (7). The experimental pipeline (7) is connected to the alarm pipeline (6). A common drain outlet (72) is provided directly below the experimental pipeline (7) and the alarm pipeline (6). A first water pressure gauge (81a) is fastened to the left side of the main pipeline (1) system side (14a) via a first water pressure testing pipeline (8a), and a second water pressure gauge (81b) is fastened to the left side of the water supply side (14b) via a second water pressure testing pipeline (8b). A compensator (82) is fastened between the first water pressure testing pipeline (8a) and the second water pressure testing pipeline (8b).

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