Fire-fighting cooling water distribution system for hydraulic self-control type storage tank

Abstract

The invention discloses a fire-fighting cooling water distribution system for a hydraulic self-control storage tank, which realizes automatic distribution and control of fire-fighting cooling water by skillfully combining elements such as a water supply pipeline, a direct supply pipeline, a transfer pipeline, a check valve, a shared cooling water branch pipe, a cooling spray head, a control valve and the like and utilizing a hydraulic principle and the one-way water passing performance of the check valve; when a fire disaster occurs, the system can respond quickly, fire-fighting cooling water can be supplied to the whole ignition tank and half surface areas of at least three adjacent tanks through a single control valve, and an electric control or manual control system does not need to be depended on; the system has the advantages of being easy and convenient to operate, capable of saving water and energy, good in economical efficiency, high in reliability and the like, can adapt to storage tanks of different scales and layouts, and provides an effective solution for fire safety of combustible liquid (gas) storage tanks in chemical engineering and other industries. The implementation of the invention is helpful for improving the fire safety level of the storage tank area and reducing the fire loss.

Description

Technical Field

[0001] The present invention relates to the technical field of fire safety, and particularly to a hydraulic self-controlled fire cooling water distribution system applicable to single-row and double-row Class A, B, and C flammable liquid or flammable gas storage tanks set outdoors in the chemical industry and other industries. Background Art

[0002] In the chemical industry and other industries, it is usually involved in single-row and double-row Class A, B, and C flammable liquid or flammable gas storage tanks set outdoors. Their production safety and fire safety levels are relatively high, and they are one of the key areas of concern in the factory area. During the construction and production process, the fire water supply extinguishing system and cooling system for flammable liquid (gas) storage tanks are important facilities to ensure fire safety. Among them, the convenience, reliability, safety, and economy of the fire cooling water supply system are particularly important.

[0003] For large-scale storage tanks, relevant national regulations require that fixed cooling water supply systems should be set for the burning tank and adjacent tanks. For the burning tank, the cooling water volume is determined according to the entire surface area of the tank body, and for the adjacent tank, the cooling water volume is determined according to half of its surface area, and it is required that the water spraying intensity per unit area (tank body surface area) should not be lower than a certain lower limit. Currently, there are two traditional methods: one is to simply set up a set of fire cooling systems for each tank. During a fire, the relationship between the burning tank and adjacent tanks is confirmed manually, and 4 or more control valves are manually or electrically opened for water supply cooling. This method is relatively simple, but it cannot achieve a cooling water supply system where only half of the adjacent tank is opened, resulting in a sharp increase in the consumption of fire cooling water. The design parameters of facilities such as fire pumps, fire water tanks, fire water supply pipe diameters, and generators are all relatively large, which is not economical. The other method is to divide the fire cooling system of each tank body into four groups on average, and each group controls the cooling water supply system corresponding to 1 / 4 of the tank perimeter surface area. During a fire, the relationship between the burning tank and adjacent tanks is determined manually, and 10 or more control valves are manually opened for water supply and fire extinguishing. This method can save half of the cooling water volume of the adjacent tank, and the corresponding fire water source and facility equipment parameters can be reduced accordingly. However, due to the large number of valves that need to be operated, the actual operation is cumbersome and prone to misoperation in case of emergency. If electric control is adopted, affected by the large number of combinations of different burning tanks and adjacent tanks, the electric control system is complex and its reliability is not strong.

[0004] Therefore, there is an urgent need to study a fire cooling water supply system with reliable performance, simple control, convenient operation, and good economy. Summary of the Invention

[0005] The purpose of the present invention is to provide a solution for a hydraulic self-controlled fire cooling water distribution system for storage tanks with simple operation, reliable performance, energy conservation, and water conservation.

[0006] To achieve the above object, the present invention is realized through the following technical solutions.

[0007] A fire-fighting cooling water distribution system for a hydraulically self-controlled storage tank, the system comprising:

[0008] a) A water supply pipeline for supplying fire-fighting cooling water to the system from a fire-fighting water source;

[0009] b) A direct supply pipeline connected between the water supply pipeline and the outlet pipe of the fire-fighting water pump for directly conveying the fire-fighting cooling water to the cooling areas of the on-fire tank and its adjacent tanks;

[0010] c) A transfer pipeline connected to the direct supply pipeline for transferring the fire-fighting cooling water from the direct supply pipeline to other cooling areas when necessary;

[0011] d) A check valve provided on the transfer pipeline, using the one-way water passing performance of the check valve to ensure that the water flow automatically opens and closes in a specific direction and avoid backflow;

[0012] e) A common cooling water branch pipe and cooling nozzles connected to the direct supply pipeline and the transfer pipeline for evenly spraying the fire-fighting cooling water onto the surface of the storage tank for cooling, and a check valve is provided between the direct supply pipeline and the cooling water branch pipe;

[0013] f) A control valve, through which the control of the fire-fighting cooling water supply to the entire on-fire tank and at least half of the surface area of three adjacent tanks can be achieved, without relying on an electric control or manual control system, realizing hydraulic self-control.

[0014] Further, an electric valve or a deluge valve is configured on the direct supply pipeline for quickly opening during a fire to allow the fire-fighting cooling water to enter the direct supply pipeline.

[0015] Further, the diameters of the cooling water pipes and the valve openings are calculated and determined according to the surface area of the storage tank, the required water spraying intensity, and the fire-fighting specifications to ensure that sufficient cooling water volume can be provided during a fire.

[0016] Further, the fire-fighting cooling water distribution system for the hydraulically self-controlled storage tank can adapt to storage tanks of different scales and layouts, including single-row, double-row or multi-column arranged storage tanks, and the connection logic between the check valve and the pipeline remains unchanged to ensure the versatility and flexibility of the system.

[0017] Advantages of the present invention:

[0018] It can effectively conform to relevant national and industry specifications, ensure that the cooling effect is met, reduce the fire-fighting cooling water consumption, reduce the effective volume of the fire-fighting water source, reduce the flow parameters of the fire-fighting cooling water supply facilities and equipment, reduce the load capacity of associated gas equipment such as generators, ensure its economy, and at the same time greatly simplify the actual operation control process, without relying on any electric control system, ensuring its reliability and convenience. Brief Description of the Drawings

[0019] Figure 1 This is a schematic diagram of the pipeline connection logic of a fire-fighting cooling water distribution system for a hydraulically self-controlled storage tank according to the present invention. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Generally, the components of the embodiments of the present invention described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0021] In the description of the embodiments of the present invention, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0022] In addition, if terms such as "horizontal", "vertical", "hanging" are used, it does not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0023] In the description of the embodiments of the present invention, "a plurality of" represents at least two.

[0024] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment:

[0026] The present invention discloses a configuration system solution of a hydraulically self-controlled fire-fighting cooling water distribution system for storage tanks composed of components such as water supply pipelines and check valves. By setting up direct supply pipelines and transfer pipelines, a fire-fighting cooling water pipeline system for the tank body that shares cooling water branch pipes and sprinkler heads, based on the one-way water passing characteristic of the check valve, automatically turns on and off the water flow without relying on any electric control or manual control system, enabling one control valve to control the fire-fighting cooling water supply for the entire on-fire tank and half of the surface area of three adjacent tanks.

[0027] The cooling water pipe diameter and valve port diameter of the present invention can be adjusted according to the surface area of the storage tank and the spraying intensity, and can be adapted to double-row and multi-column storage tanks, but the connection logic between the check valve and the pipeline remains unchanged.

[0028] The following is a detailed description of the working principle of the system:

[0029] I. System Composition

[0030] The system mainly consists of components such as a water supply pipeline, a direct supply pipeline, a transfer pipeline, a check valve, a shared cooling water branch pipe, a cooling sprinkler head, and a control valve.

[0031] Water supply pipeline: Responsible for supplying fire-fighting cooling water from the fire-fighting water source to the system.

[0032] Direct supply pipeline 10: Connected between the water supply pipeline and the outlet pipe of the fire-fighting water pump, used to directly transport the fire-fighting cooling water to the cooling areas of the on-fire tank and its adjacent tanks. An electric valve or deluge valve 11 is configured on the direct supply pipeline, which is quickly opened during a fire to allow the fire-fighting cooling water to enter the direct supply pipeline.

[0033] Transfer pipeline 20: Connected to the direct supply pipeline, used to transfer the fire-fighting cooling water from the direct supply pipeline to other cooling areas when necessary. A check valve is set on the transfer pipeline to ensure that the water flow automatically turns on and off in a specific direction and prevent backflow.

[0034] Check valve 30: Set between the transfer pipeline, the direct supply pipeline and the cooling water branch pipe, using the one-way water passing performance of the check valve to ensure that the water flow automatically turns on and off in a specific direction.

[0035] Shared cooling water branch pipe 40 and cooling sprinkler head 50: Connected to the direct supply pipeline and the transfer pipeline, used to evenly spray the fire-fighting cooling water onto the surface of the storage tank for cooling.

[0036] Control valve: Set at the inlet end of the direct supply pipeline, and the control of the fire-fighting cooling water supply for the entire on-fire tank and at least half of the surface area of three adjacent tanks can be achieved through a single control valve.

[0037] II. Working Principle

[0038] Normal state:

[0039] When there is no fire, the system is in standby mode. The fire cooling water in the water supply pipeline remains static, the control valve is closed, and the water flow in the direct supply pipeline and the transfer pipeline is blocked.

[0040] The check valve is in the closed state to prevent the water flow from flowing back in the pipeline.

[0041] When a fire occurs:

[0042] When a fire occurs, the fire pump starts, and the fire cooling water enters the direct supply pipeline through the water supply pipeline.

[0043] The control valve opens quickly to allow the fire cooling water to enter the direct supply pipeline.

[0044] The fire cooling water is directly transported through the direct supply pipeline to the cooling area of the burning tank, and is evenly sprayed onto the surface of the storage tank through the shared cooling water branch pipe and the cooling nozzle for cooling.

[0045] At the same time, due to the large cooling demand of the burning tank, the water flow pressure in the direct supply pipeline increases, pushing the check valve on the transfer pipeline to open, and the fire cooling water enters the cooling area of the adjacent tank through the transfer pipeline.

[0046] The cooling area of the adjacent tank receives the fire cooling water from the transfer pipeline through the shared cooling water branch pipe and the cooling nozzle for cooling. Due to the one-way water passing performance of the check valve, the fire cooling water can only flow in one direction, avoiding backflow.

[0047] By reasonably designing the layout of the transfer pipeline and the check valve, it can be ensured that the adjacent tank only receives half of the cooling water volume of its surface area, meeting the requirements of fire protection codes.

[0048] Hydraulic automatic control:

[0049] The entire system does not need to rely on an electric control or manual control system, and realizes automatic control and adjustment through the hydraulic principle and the one-way water passing performance of the check valve.

[0050] When the cooling demand of the burning tank is met, the water flow pressure in the direct supply pipeline decreases, and the check valve on the transfer pipeline automatically closes, stopping the supply of fire cooling water to the adjacent tank.

[0051] By a single control valve, it can realize the control of the fire cooling water supply to the entire burning tank and at least half of the surface area of three adjacent tanks, with simple and quick operation.

[0052] III. System advantages

[0053] Economy: Through the hydraulic automatic control method, the automatic distribution and control of fire-fighting cooling water are realized, reducing the consumption of fire-fighting cooling water, reducing the effective volume of the fire-fighting water source and the flow parameters of the fire-fighting cooling water supply facilities and equipment, reducing the load capacity of supporting equipment such as generators, and reducing the system construction and operation costs.

[0054] Reliability: It does not rely on the electric control or manual control system. Through the hydraulic principle and the one-way water passing performance of the check valve, automatic control and adjustment are realized, improving the reliability and stability of the system.

[0055] Convenience: The operation is simple and fast. Through a single control valve, the control of the fire-fighting cooling water supply to the entire burning tank and adjacent tanks can be realized.

[0056] Adaptability: It can adapt to storage tanks of different scales and layouts, including single-row, double-row or multi-column arranged storage tanks, and the connection logic between the check valve and the pipeline remains unchanged, ensuring the universality and flexibility of the system.

[0057] In summary, the hydraulic automatic control type fire-fighting cooling water distribution system for storage tanks of the present invention has significant advantages in economy, reliability, convenience and adaptability, providing an effective solution for the fire safety of combustible liquid (gas) storage tanks in the chemical industry and other industries.

[0058] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and without departing from the gist of the present invention creation, structures and embodiments similar to the technical solution are designed without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A fire-fighting cooling water distribution system for a hydraulically self-controlled storage tank, characterized in that, The system includes: a) A water supply pipeline for supplying fire-fighting cooling water to the system from a fire water source; b) A direct supply pipeline connected between the water supply pipeline and the outlet pipe of the fire pump, for directly conveying the fire-fighting cooling water to the cooling areas of the on-fire tank and its adjacent tanks; c) A transfer pipeline connected to the direct supply pipeline, for transferring the fire-fighting cooling water from the direct supply pipeline to other cooling areas when necessary; d) A check valve installed on the transfer pipeline, using the one-way water passing performance of the check valve to ensure that the water flow automatically opens and closes in a specific direction and avoid backflow; e) A common cooling water branch pipe and cooling nozzles connected to the direct supply pipeline and the transfer pipeline, for evenly spraying the fire-fighting cooling water onto the surface of the storage tank for cooling, and a check valve is provided between the direct supply pipeline and the cooling water branch pipe; f) A control valve, through which the supply of fire-fighting cooling water to half of the surface area of the entire on-fire tank and at least three adjacent tanks can be controlled by a single control valve, without relying on an electric control or manual control system, realizing hydraulic automatic control.

2. The fire-fighting cooling water distribution system for a hydraulically self-controlled storage tank according to claim 1, wherein: An electric valve or a deluge valve is configured on the direct supply pipeline, for quickly opening during a fire to allow the fire-fighting cooling water to enter the direct supply pipeline.

3. A fire-fighting cooling water distribution system for a hydraulically self-controlled storage tank according to claim 1, characterized in that: The diameters of the cooling water pipeline and the valve ports are calculated and determined according to the surface area of the storage tank, the required spraying intensity and the fire protection code, so as to ensure that sufficient cooling water volume can be provided during a fire.

4. A fire-fighting cooling water distribution system for a hydraulically self-controlled storage tank according to claim 1, characterized in that: The hydraulic automatic control type fire-fighting cooling water distribution system for storage tanks can adapt to storage tanks of different scales and layouts, including single-row, double-row or multi-column arranged storage tanks, and the connection logic between the check valve and the pipeline remains unchanged to ensure the universality and flexibility of the system.

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