Water replenishing device for fire pool

Abstract

The invention relates to the technical field of fire fighting systems, and discloses a fire pool water replenishing device which comprises an original fire pool, a control box, a water replenishing tank arranged near the original fire pool, a water replenishing pipeline arranged between the water replenishing tank and the original fire pool, and a hydraulic starting valve arranged on the water replenishing pipeline. Wherein the make-up water tank is used for storing make-up water; the water replenishing pipeline is used for connecting the water replenishing tank and the original fire pool; when the fire pump is started, the hydraulic starting valve is driven to be opened through water flow pressure generated by the fire pump, and after the fire pump is stopped, the hydraulic starting valve is automatically closed. According to the invention, the problem that the safety and reliability of an electrical system are relatively low can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire protection systems, and in particular to a fire protection pool water replenishing device. Background Art

[0002] In the renovation of old residential communities, the renovation of fire protection systems is particularly important. Due to changes in regulations, many existing fire protection facilities no longer meet current requirements, and modifying the water volume of fire water tanks is particularly difficult.

[0003] In the renovation of older residential communities, the expansion of fire water tanks faces structural limitations and site constraints. Existing technologies rely on electric and solenoid valves to control the opening and closing of water supply and replenishment pipes. These limitations are primarily reflected in the following aspects: First, the newly added control system introduces more electrical components and complex logic, significantly increasing the risk of system failure. Second, the heavy reliance on electrical coordination complicates daily operation and maintenance inspections, increasing maintenance costs. Third, compared to purely physical control, electrical systems are less secure and reliable, and are susceptible to power outages or signal interference in emergency situations, making it difficult to ensure stable fire water replenishment and immediate response.

[0004] Therefore, a physically controlled water replenishing device is urgently needed. Summary of the Invention

[0005] The present invention is made to solve the above-mentioned technical problems. Its purpose is to provide a fire water tank replenishing device to solve the problem that the opening and stopping of the water supply and replenishing pipes are controlled by electric valves and solenoid valves in the existing technology, while the safety and reliability of the electrical system are relatively low.

[0006] In order to achieve the above-mentioned object, the present invention provides a fire water pool water replenishment device, comprising: an original fire water pool, a control box, a replenishment water tank arranged near the original fire water pool, a replenishment water pipeline arranged between the replenishment water tank and the original fire water pool, and a hydraulically activated valve arranged on the replenishment water pipeline; wherein,

[0007] The supplementary water tank is used to store supplementary water;

[0008] The water supply pipeline is used to connect the supplementary water tank with the original fire water tank;

[0009] When the fire water pump is started, the water flow pressure generated by the fire water pump drives the hydraulic starting valve to open, and when the fire water pump stops, the hydraulic starting valve automatically closes.

[0010] Preferably, the hydraulic starting valve comprises: a normal pressure chamber, a starting chamber arranged at the lower end of the normal pressure chamber, a normal empty chamber arranged at the lower end of the starting chamber, and a normal water chamber arranged at the lower end of the normal empty chamber; wherein,

[0011] A starting pipe is provided on one side of the starting cabin, and the starting cabin is connected to the water outlet pipe of the fire water pump through the starting pipe.

[0012] Preferably, the hydraulic starting valve further comprises: a valve body provided on one side of the normal water tank, a connecting pipe provided between the normal pressure tank and the normal water tank, a diaphragm provided between the normal pressure tank and the starting tank, a valve core provided between the normal water tank and the normal vacuum tank, and a valve stem provided through the normal pressure tank, the starting tank and the normal vacuum tank; wherein,

[0013] The atmospheric pressure tank is connected to the normal water tank via the connecting pipe;

[0014] The valve core is used to control the on / off of the water supply pipeline;

[0015] The diaphragm is used to sense the change in water pressure when the fire water pump is started.

[0016] Preferably, in a non-firefighting state, the pressures between the normally empty compartment and the normal pressure compartment are balanced.

[0017] Preferably, in a non-firefighting state, the normally empty cabin is communicated with the external atmosphere, wherein:

[0018] The valve core is in a closed state.

[0019] Preferably, a valve seat is provided on one side of the valve body, and a seal is provided between the valve core and the valve seat.

[0020] Preferably, the liquid level of the supplementary water tank is higher than the liquid level of the original fire water tank.

[0021] Preferably, a second valve is provided on the water supply pipeline between the supplementary water tank and the original fire water tank, for manually activating emergency water supply when the hydraulic starting valve fails.

[0022] Preferably, the diameter of the water supply pipeline is determined based on the design flow of the fire pump.

[0023] Preferably, the volume of the supplementary water tank satisfies the formula: C=AB, where:

[0024] A is the total water volume required by current fire protection regulations;

[0025] B is the existing water volume of the original fire water tank;

[0026] The C is the designed water volume of the supplementary water tank.

[0027] As described above and in practice, the fire water tank replenishment device of the present invention employs a hydraulically activated valve positioned before the pipe enters the fire water tank. Once the fire pump is started, the water pressure from the fire water pump activates the hydraulically activated valve, allowing water from the newly constructed water tank to flow through the replenishment pipeline into the original fire water tank, meeting fire water requirements. When the fire water supply is complete and the fire water pump stops, the hydraulically activated valve automatically closes, ensuring the effective water level in the newly constructed water tank can be connected to the original fire water tank via the newly constructed pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a fire pool water replenishment device involved in one embodiment of the present invention.

[0029] Figure 2 This is a schematic structural diagram of a hydraulically activated valve involved in one embodiment of the present invention.

[0030] The reference numerals in the figures are:

[0031] 1. Valve stem; 2. Normal pressure compartment; 3. Diaphragm; 4. Starting compartment; 5. Valve core; 6. Valve seat; 7. Valve body; 8. Connecting pipe; 9. Starting pipe; 10. Normal water compartment; 11. Normal air compartment; 12. Hydraulic starting valve; 13. Make-up water tank; 14. Original fire water tank. DETAILED DESCRIPTION

[0032] The exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0033] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. It should be noted that in the present disclosure, the terms "including", "configured with", and "set on" are used to express open-ended inclusion and mean that in addition to the listed elements / components / etc., there may be additional elements / components / etc.; the terms "first", "second", etc. are used only as labels and are not intended to limit the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0034] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0035] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Please refer to Figure 1 The fire water tank replenishment device provided by the present invention mainly includes: an original fire water tank 14, a replenishing water tank 13, a replenishing water pipeline connecting the two, and a hydraulically activated valve 12 installed on the replenishing water pipeline. The original fire water tank 14 is usually located in an underground space and is difficult to expand due to structural limitations. The replenishing water tank 13 can be installed on the outdoor ground or in a separate room. Its volume is determined by the difference between the total water volume required by current fire protection regulations and the existing water volume in the original fire water tank. The replenishing water pipeline extends from the replenishing water tank 13 to the original fire water tank 14, and a hydraulically activated valve 12 is installed in the replenishing water pipeline. When the fire water pump starts, the water flow pressure it generates is transmitted through the pipeline to the hydraulically activated valve 12, driving the valve to open, allowing the water in the replenishing water tank 13 to flow into the original fire water tank 14; after the fire water pump stops, the hydraulically activated valve 12 automatically closes to prevent water loss in non-firefighting conditions. This device does not require electrical control and relies entirely on hydraulic drive. It is suitable for scenarios where the expansion of fire water tanks is limited during the renovation of old communities.

[0037] Furthermore, the specific structure of the hydraulic starting valve 12 includes a normal pressure chamber 2, a starting chamber 4, a normal vacuum chamber 11, and a normal water chamber 10. The starting chamber 4 is located below the normal pressure chamber 2 and is connected to the water outlet pipe of the fire pump through the starting pipe 9. The normal vacuum chamber 11 is located below the starting chamber 4 and is adjacent to the normal water chamber 10. When the fire pump is started, high-pressure water flows into the starting chamber 4 through the starting pipe 9, causing the pressure in the starting chamber 4 to rise sharply, breaking the pressure balance with the normal pressure chamber 2. The normal pressure chamber 2 is connected to the normal water chamber 10 through the connecting pipe 8, maintaining a stable pressure in the normal water chamber 10. This compartment design achieves automatic control of the valve through pressure difference, without relying on external energy.

[0038] Furthermore, a valve core 5, a diaphragm 3 and a valve stem 1 are provided in the valve body 7 of the hydraulic starting valve 12. The diaphragm 3 is located between the atmospheric pressure chamber 2 and the starting chamber 4 to isolate the two. The valve stem 1 passes through the atmospheric pressure chamber 2, the starting chamber 4 and the atmospheric pressure chamber 11, with one end connected to the diaphragm 3 and the other end fixing the valve core 5. When the pressure in the starting chamber 4 increases, the diaphragm 3 is deformed by pressure and pushes the valve stem 1 to move downward, driving the valve core 5 to separate from the valve seat 6, and the water supply pipeline is opened. In a non-firefighting state, the atmospheric pressure chamber 11 is connected to the atmosphere through the vent hole to ensure that the valve core 5 remains closed under normal pressure. The contact surface between the valve core 5 and the valve seat 6 adopts a conical sealing structure to prevent leakage.

[0039] Furthermore, in non-firefighting conditions, the normally empty compartment 11 and the normal pressure compartment 2 maintain pressure equilibrium through internal passageways. The stable pressure of the normal pressure compartment 2 is transmitted to the normal water compartment 10 via the connecting pipe 8. The atmospheric pressure in the normally empty compartment 11 and the normal pressure compartment 2 create a symmetrical force, holding the valve core 5 against the valve seat 6 under the action of the spring or its own weight. This pressure-balancing design ensures that the valve remains closed even when the fire pump is not operating, preventing accidental water replenishment.

[0040] Furthermore, a vent is provided at the top of the atmospheric chamber 11, providing direct access to the outside atmosphere. When the fire pump is not running, the pressure within the atmospheric chamber 11 is consistent with atmospheric pressure, while the atmospheric chamber 2 maintains the same pressure as the atmospheric chamber 10 via the connecting pipe 8. At this point, the valve core 5, under the pull of the valve stem 1 and its own weight, tightly fits against the valve seat 6, forming a double seal. This design simplifies the valve's reset mechanism, allowing it to automatically close simply by stopping the fire pump.

[0041] Furthermore, valve seat 6 is fixed to the bottom of valve body 7. Its inner wall is tapered, matching the tapered end surface of valve core 5. When valve core 5 moves downward, the tapered contact surface gradually separates from valve seat 6, forming a flow channel for the water supply line. When closed, the tapered surface fully engages valve seat 6, achieving zero leakage through the metal-rubber composite sealing ring. Valve seat 6 is made of a corrosion-resistant alloy and has a surface coating to extend its service life.

[0042] Furthermore, the makeup water tank 13 must be installed higher than the original fire water reservoir 14, leveraging the natural level difference to provide potential energy for the replenishment water. The bottom of the makeup water tank 13 is connected to the top of the original fire water reservoir 14 via a makeup pipeline. The slope of the pipeline ensures smooth water flow. To prevent ineffective replenishment due to daily water level fluctuations, the hydraulic activation valve 12 opens only when the fire water pump is activated, blocking the natural flow in non-emergency situations.

[0043] Furthermore, a second valve is installed in the water supply line, upstream of the hydraulically activated valve 12. This second valve is normally closed and is only manually opened to provide emergency water supply in the event of a malfunction or maintenance of the hydraulically activated valve 12. This valve is flange-connected for easy disassembly and maintenance, and is equipped with a position indicator to clearly indicate its open or closed state.

[0044] Furthermore, the diameter of the water supply pipeline is determined according to the design flow rate of the fire pump to ensure minimum water flow resistance under maximum water supply demand.

[0045] Furthermore, the volume calculation of the supplementary water tank 13 must satisfy the formula C=AB, where A is the total water volume required by the current fire protection regulations, B is the existing water volume of the original fire water pool 14, and C is the designed water volume of the supplementary water tank 13. For example, if the regulations require A=600m 3 , original water pool B = 400m 3 , then the supplementary water tank needs to provide a water storage capacity of C = 200m3. The water tank structure can be made of fiberglass or concrete, with an anti-seepage layer inside and an inspection port and ventilation device installed on the top.

[0046] In summary, this fire water tank replenishment device utilizes a non-electrical control mechanism, using a hydraulically activated valve 12, to automatically replenish water when the fire pump is activated. The device consists of a primary fire water tank 14, a replenishment water tank 13, and a replenishment pipeline connecting the two. The hydraulically activated valve 12, as its core component, is driven open by the water pressure of the fire water pump and automatically closes when the pump stops. The hydraulically activated valve 12 features a compartmentalized design, including a normal pressure compartment 2, a starting compartment 4, a normal vacuum compartment 11, and a normal water compartment 10. These compartments are controlled by a pressure differential created by a connecting pipe 8 and a starting pipe 9. The valve stem 1, linked to the diaphragm 3, transmits the high pressure from the starting compartment 4 to the valve core 5, disengaging it from the valve seat 6 and enabling water replenishment. After the firefighting operation is complete, the pressure balance in the normal vacuum compartment 11, which is connected to the atmosphere, causes the valve core 5 to re-seal. The replenishment water tank 13 must be installed above the primary fire water tank 14, utilizing the liquid level differential to assist in replenishment. Its volume is determined based on regulatory requirements and the difference between the volume of water in the primary water tank. A second valve is installed on the water supply line to prevent failures, and the pipe diameter matches the fire pump flow rate to ensure water supply efficiency. This device, through a purely hydraulic drive and mechanical structure, solves the problem of limited expansion of fire water tanks in older residential communities, while also offering high reliability and easy maintenance.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A fire pool water replenishing device, characterized in that: include: The original fire water pool, the control box, the supplementary water tank arranged near the original fire water pool, the water supply pipeline arranged between the supplementary water tank and the original fire water pool, and the hydraulic start valve arranged on the water supply pipeline; wherein, The supplementary water tank is used to store supplementary water; The water supply pipeline is used to connect the supplementary water tank with the original fire water tank; When the fire water pump is started, the water flow pressure generated by the fire water pump drives the hydraulic starting valve to open, and when the fire water pump stops, the hydraulic starting valve automatically closes.

2. The fire pool water replenishing device according to claim 1, characterized in that: The hydraulic starting valve includes: a normal pressure chamber, a starting chamber arranged at the lower end of the normal pressure chamber, a normal empty chamber arranged at the lower end of the starting chamber, and a normal water chamber arranged at the lower end of the normal empty chamber; wherein, A starting pipe is provided on one side of the starting cabin, and the starting cabin is connected to the water outlet pipe of the fire water pump through the starting pipe.

3. The fire pool water replenishing device according to claim 2, characterized in that: The hydraulic starting valve further comprises: a valve body provided on one side of the normal water tank, a connecting pipe provided between the normal pressure tank and the normal water tank, a diaphragm provided between the normal pressure tank and the starting tank, a valve core provided between the normal water tank and the normal vacuum tank, and a valve stem provided through the normal pressure tank, the starting tank and the normal vacuum tank; wherein, The atmospheric pressure tank is connected to the normal water tank via the connecting pipe; The valve core is used to control the on / off of the water supply pipeline; The diaphragm is used to sense the change in water pressure when the fire water pump is started.

4. The fire pool water replenishing device according to claim 2, characterized in that: In a non-firefighting state, the pressures between the normally empty compartment and the normal pressure compartment are balanced.

5. The fire pool water replenishing device according to claim 3, characterized in that: In the non-firefighting state, the normally empty cabin is connected to the external atmosphere, wherein, The valve core is in a closed state.

6. The fire pool water replenishing device according to claim 5, characterized in that: A valve seat is provided on one side of the valve body, and a sealing arrangement is provided between the valve core and the valve seat.

7. The fire pool water replenishing device according to claim 1, characterized in that: The liquid level of the supplementary water tank is higher than the liquid level of the original fire water tank.

8. The fire pool water replenishing device according to claim 1, characterized in that: A second valve is provided on the water supply pipeline between the supplementary water tank and the original fire water pool, which is used to manually activate emergency water supply when the hydraulic starting valve fails.

9. The fire pool water replenishing device according to claim 1, characterized in that: The diameter of the water supply pipeline is determined based on the design flow of the fire pump.

10. The fire pool water replenishing device according to claim 1, characterized in that: The volume of the supplementary water tank satisfies the formula: C = AB, where: A is the total water volume required by current fire protection regulations; B is the existing water volume of the original fire water tank; The C is the designed water volume of the supplementary water tank.

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